1 /* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2012, Jouni Malinen <j (at) w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes (at) sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13 #include "includes.h" 14 #include <sys/ioctl.h> 15 #include <sys/types.h> 16 #include <sys/stat.h> 17 #include <fcntl.h> 18 #include <net/if.h> 19 #include <netlink/genl/genl.h> 20 #include <netlink/genl/family.h> 21 #include <netlink/genl/ctrl.h> 22 #include <linux/rtnetlink.h> 23 #include <netpacket/packet.h> 24 #include <linux/filter.h> 25 #include <linux/errqueue.h> 26 #include "nl80211_copy.h" 27 28 #include "common.h" 29 #include "eloop.h" 30 #include "utils/list.h" 31 #include "common/ieee802_11_defs.h" 32 #include "common/ieee802_11_common.h" 33 #include "l2_packet/l2_packet.h" 34 #include "netlink.h" 35 #include "linux_ioctl.h" 36 #include "radiotap.h" 37 #include "radiotap_iter.h" 38 #include "rfkill.h" 39 #include "driver.h" 40 41 #ifndef SO_WIFI_STATUS 42 # if defined(__sparc__) 43 # define SO_WIFI_STATUS 0x0025 44 # elif defined(__parisc__) 45 # define SO_WIFI_STATUS 0x4022 46 # else 47 # define SO_WIFI_STATUS 41 48 # endif 49 50 # define SCM_WIFI_STATUS SO_WIFI_STATUS 51 #endif 52 53 #ifndef SO_EE_ORIGIN_TXSTATUS 54 #define SO_EE_ORIGIN_TXSTATUS 4 55 #endif 56 57 #ifndef PACKET_TX_TIMESTAMP 58 #define PACKET_TX_TIMESTAMP 16 59 #endif 60 61 #ifdef ANDROID 62 #include "android_drv.h" 63 #endif /* ANDROID */ 64 #ifdef CONFIG_LIBNL20 65 /* libnl 2.0 compatibility code */ 66 #define nl_handle nl_sock 67 #define nl80211_handle_alloc nl_socket_alloc_cb 68 #define nl80211_handle_destroy nl_socket_free 69 #else 70 /* 71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 72 * but when you free a socket again it will mess up its bitmap and 73 * and use the wrong number the next time it needs a socket ID. 74 * Therefore, we wrap the handle alloc/destroy and add our own pid 75 * accounting. 76 */ 77 static uint32_t port_bitmap[32] = { 0 }; 78 79 static struct nl_handle *nl80211_handle_alloc(void *cb) 80 { 81 struct nl_handle *handle; 82 uint32_t pid = getpid() & 0x3FFFFF; 83 int i; 84 85 handle = nl_handle_alloc_cb(cb); 86 87 for (i = 0; i < 1024; i++) { 88 if (port_bitmap[i / 32] & (1 << (i % 32))) 89 continue; 90 port_bitmap[i / 32] |= 1 << (i % 32); 91 pid += i << 22; 92 break; 93 } 94 95 nl_socket_set_local_port(handle, pid); 96 97 return handle; 98 } 99 100 static void nl80211_handle_destroy(struct nl_handle *handle) 101 { 102 uint32_t port = nl_socket_get_local_port(handle); 103 104 port >>= 22; 105 port_bitmap[port / 32] &= ~(1 << (port % 32)); 106 107 nl_handle_destroy(handle); 108 } 109 #endif /* CONFIG_LIBNL20 */ 110 111 112 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 113 { 114 struct nl_handle *handle; 115 116 handle = nl80211_handle_alloc(cb); 117 if (handle == NULL) { 118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 119 "callbacks (%s)", dbg); 120 return NULL; 121 } 122 123 if (genl_connect(handle)) { 124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 125 "netlink (%s)", dbg); 126 nl80211_handle_destroy(handle); 127 return NULL; 128 } 129 130 return handle; 131 } 132 133 134 static void nl_destroy_handles(struct nl_handle **handle) 135 { 136 if (*handle == NULL) 137 return; 138 nl80211_handle_destroy(*handle); 139 *handle = NULL; 140 } 141 142 143 #ifndef IFF_LOWER_UP 144 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 145 #endif 146 #ifndef IFF_DORMANT 147 #define IFF_DORMANT 0x20000 /* driver signals dormant */ 148 #endif 149 150 #ifndef IF_OPER_DORMANT 151 #define IF_OPER_DORMANT 5 152 #endif 153 #ifndef IF_OPER_UP 154 #define IF_OPER_UP 6 155 #endif 156 157 struct nl80211_global { 158 struct dl_list interfaces; 159 int if_add_ifindex; 160 struct netlink_data *netlink; 161 struct nl_cb *nl_cb; 162 struct nl_handle *nl; 163 int nl80211_id; 164 int ioctl_sock; /* socket for ioctl() use */ 165 166 struct nl_handle *nl_event; 167 }; 168 169 struct nl80211_wiphy_data { 170 struct dl_list list; 171 struct dl_list bsss; 172 struct dl_list drvs; 173 174 struct nl_handle *nl_beacons; 175 struct nl_cb *nl_cb; 176 177 int wiphy_idx; 178 }; 179 180 static void nl80211_global_deinit(void *priv); 181 static void wpa_driver_nl80211_deinit(void *priv); 182 183 struct i802_bss { 184 struct wpa_driver_nl80211_data *drv; 185 struct i802_bss *next; 186 int ifindex; 187 char ifname[IFNAMSIZ + 1]; 188 char brname[IFNAMSIZ]; 189 unsigned int beacon_set:1; 190 unsigned int added_if_into_bridge:1; 191 unsigned int added_bridge:1; 192 193 u8 addr[ETH_ALEN]; 194 195 int freq; 196 197 struct nl_handle *nl_preq, *nl_mgmt; 198 struct nl_cb *nl_cb; 199 200 struct nl80211_wiphy_data *wiphy_data; 201 struct dl_list wiphy_list; 202 }; 203 204 struct wpa_driver_nl80211_data { 205 struct nl80211_global *global; 206 struct dl_list list; 207 struct dl_list wiphy_list; 208 char phyname[32]; 209 void *ctx; 210 int ifindex; 211 int if_removed; 212 int if_disabled; 213 int ignore_if_down_event; 214 struct rfkill_data *rfkill; 215 struct wpa_driver_capa capa; 216 int has_capability; 217 218 int operstate; 219 220 int scan_complete_events; 221 222 struct nl_cb *nl_cb; 223 224 u8 auth_bssid[ETH_ALEN]; 225 u8 bssid[ETH_ALEN]; 226 int associated; 227 u8 ssid[32]; 228 size_t ssid_len; 229 enum nl80211_iftype nlmode; 230 enum nl80211_iftype ap_scan_as_station; 231 unsigned int assoc_freq; 232 233 int monitor_sock; 234 int monitor_ifidx; 235 int monitor_refcount; 236 237 unsigned int disabled_11b_rates:1; 238 unsigned int pending_remain_on_chan:1; 239 unsigned int in_interface_list:1; 240 unsigned int device_ap_sme:1; 241 unsigned int poll_command_supported:1; 242 unsigned int data_tx_status:1; 243 unsigned int scan_for_auth:1; 244 unsigned int retry_auth:1; 245 unsigned int use_monitor:1; 246 247 u64 remain_on_chan_cookie; 248 u64 send_action_cookie; 249 250 unsigned int last_mgmt_freq; 251 252 struct wpa_driver_scan_filter *filter_ssids; 253 size_t num_filter_ssids; 254 255 struct i802_bss first_bss; 256 257 int eapol_tx_sock; 258 259 #ifdef HOSTAPD 260 int eapol_sock; /* socket for EAPOL frames */ 261 262 int default_if_indices[16]; 263 int *if_indices; 264 int num_if_indices; 265 266 int last_freq; 267 int last_freq_ht; 268 #endif /* HOSTAPD */ 269 270 /* From failed authentication command */ 271 int auth_freq; 272 u8 auth_bssid_[ETH_ALEN]; 273 u8 auth_ssid[32]; 274 size_t auth_ssid_len; 275 int auth_alg; 276 u8 *auth_ie; 277 size_t auth_ie_len; 278 u8 auth_wep_key[4][16]; 279 size_t auth_wep_key_len[4]; 280 int auth_wep_tx_keyidx; 281 int auth_local_state_change; 282 int auth_p2p; 283 }; 284 285 286 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 287 void *timeout_ctx); 288 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 289 enum nl80211_iftype nlmode); 290 static int 291 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 292 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 293 const u8 *addr, int cmd, u16 reason_code, 294 int local_state_change); 295 static void nl80211_remove_monitor_interface( 296 struct wpa_driver_nl80211_data *drv); 297 static int nl80211_send_frame_cmd(struct i802_bss *bss, 298 unsigned int freq, unsigned int wait, 299 const u8 *buf, size_t buf_len, u64 *cookie, 300 int no_cck, int no_ack, int offchanok); 301 static int wpa_driver_nl80211_probe_req_report(void *priv, int report); 302 #ifdef ANDROID 303 static int android_pno_start(struct i802_bss *bss, 304 struct wpa_driver_scan_params *params); 305 static int android_pno_stop(struct i802_bss *bss); 306 #endif /* ANDROID */ 307 #ifdef ANDROID_P2P 308 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 309 enum wpa_event_type type, 310 const u8 *frame, size_t len); 311 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 312 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 313 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 314 int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 315 const struct wpabuf *proberesp, 316 const struct wpabuf *assocresp); 317 318 #endif 319 #ifdef HOSTAPD 320 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 321 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 322 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 323 static int wpa_driver_nl80211_if_remove(void *priv, 324 enum wpa_driver_if_type type, 325 const char *ifname); 326 #else /* HOSTAPD */ 327 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 328 { 329 } 330 331 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 332 { 333 } 334 335 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 336 { 337 return 0; 338 } 339 #endif /* HOSTAPD */ 340 #ifdef ANDROID 341 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 342 size_t buf_len); 343 #endif 344 345 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); 346 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 347 int ifindex, int disabled); 348 349 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 350 static int wpa_driver_nl80211_authenticate_retry( 351 struct wpa_driver_nl80211_data *drv); 352 353 354 static int is_ap_interface(enum nl80211_iftype nlmode) 355 { 356 return (nlmode == NL80211_IFTYPE_AP || 357 nlmode == NL80211_IFTYPE_P2P_GO); 358 } 359 360 361 static int is_sta_interface(enum nl80211_iftype nlmode) 362 { 363 return (nlmode == NL80211_IFTYPE_STATION || 364 nlmode == NL80211_IFTYPE_P2P_CLIENT); 365 } 366 367 368 static int is_p2p_interface(enum nl80211_iftype nlmode) 369 { 370 return (nlmode == NL80211_IFTYPE_P2P_CLIENT || 371 nlmode == NL80211_IFTYPE_P2P_GO); 372 } 373 374 375 struct nl80211_bss_info_arg { 376 struct wpa_driver_nl80211_data *drv; 377 struct wpa_scan_results *res; 378 unsigned int assoc_freq; 379 u8 assoc_bssid[ETH_ALEN]; 380 }; 381 382 static int bss_info_handler(struct nl_msg *msg, void *arg); 383 384 385 /* nl80211 code */ 386 static int ack_handler(struct nl_msg *msg, void *arg) 387 { 388 int *err = arg; 389 *err = 0; 390 return NL_STOP; 391 } 392 393 static int finish_handler(struct nl_msg *msg, void *arg) 394 { 395 int *ret = arg; 396 *ret = 0; 397 return NL_SKIP; 398 } 399 400 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 401 void *arg) 402 { 403 int *ret = arg; 404 *ret = err->error; 405 return NL_SKIP; 406 } 407 408 409 static int no_seq_check(struct nl_msg *msg, void *arg) 410 { 411 return NL_OK; 412 } 413 414 415 static int send_and_recv(struct nl80211_global *global, 416 struct nl_handle *nl_handle, struct nl_msg *msg, 417 int (*valid_handler)(struct nl_msg *, void *), 418 void *valid_data) 419 { 420 struct nl_cb *cb; 421 int err = -ENOMEM; 422 423 cb = nl_cb_clone(global->nl_cb); 424 if (!cb) 425 goto out; 426 427 err = nl_send_auto_complete(nl_handle, msg); 428 if (err < 0) 429 goto out; 430 431 err = 1; 432 433 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 434 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 435 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 436 437 if (valid_handler) 438 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 439 valid_handler, valid_data); 440 441 while (err > 0) 442 nl_recvmsgs(nl_handle, cb); 443 out: 444 nl_cb_put(cb); 445 nlmsg_free(msg); 446 return err; 447 } 448 449 450 static int send_and_recv_msgs_global(struct nl80211_global *global, 451 struct nl_msg *msg, 452 int (*valid_handler)(struct nl_msg *, void *), 453 void *valid_data) 454 { 455 return send_and_recv(global, global->nl, msg, valid_handler, 456 valid_data); 457 } 458 459 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 460 struct nl_msg *msg, 461 int (*valid_handler)(struct nl_msg *, void *), 462 void *valid_data) 463 { 464 return send_and_recv(drv->global, drv->global->nl, msg, 465 valid_handler, valid_data); 466 } 467 468 469 struct family_data { 470 const char *group; 471 int id; 472 }; 473 474 475 static int family_handler(struct nl_msg *msg, void *arg) 476 { 477 struct family_data *res = arg; 478 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 479 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 480 struct nlattr *mcgrp; 481 int i; 482 483 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 484 genlmsg_attrlen(gnlh, 0), NULL); 485 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 486 return NL_SKIP; 487 488 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 489 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 490 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 491 nla_len(mcgrp), NULL); 492 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 493 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 494 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 495 res->group, 496 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 497 continue; 498 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 499 break; 500 }; 501 502 return NL_SKIP; 503 } 504 505 506 static int nl_get_multicast_id(struct nl80211_global *global, 507 const char *family, const char *group) 508 { 509 struct nl_msg *msg; 510 int ret = -1; 511 struct family_data res = { group, -ENOENT }; 512 513 msg = nlmsg_alloc(); 514 if (!msg) 515 return -ENOMEM; 516 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 517 0, 0, CTRL_CMD_GETFAMILY, 0); 518 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 519 520 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 521 msg = NULL; 522 if (ret == 0) 523 ret = res.id; 524 525 nla_put_failure: 526 nlmsg_free(msg); 527 return ret; 528 } 529 530 531 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 532 struct nl_msg *msg, int flags, uint8_t cmd) 533 { 534 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 535 0, flags, cmd, 0); 536 } 537 538 539 struct wiphy_idx_data { 540 int wiphy_idx; 541 }; 542 543 544 static int netdev_info_handler(struct nl_msg *msg, void *arg) 545 { 546 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 547 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 548 struct wiphy_idx_data *info = arg; 549 550 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 551 genlmsg_attrlen(gnlh, 0), NULL); 552 553 if (tb[NL80211_ATTR_WIPHY]) 554 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 555 556 return NL_SKIP; 557 } 558 559 560 static int nl80211_get_wiphy_index(struct i802_bss *bss) 561 { 562 struct nl_msg *msg; 563 struct wiphy_idx_data data = { 564 .wiphy_idx = -1, 565 }; 566 567 msg = nlmsg_alloc(); 568 if (!msg) 569 return -1; 570 571 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 572 573 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 574 575 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 576 return data.wiphy_idx; 577 msg = NULL; 578 nla_put_failure: 579 nlmsg_free(msg); 580 return -1; 581 } 582 583 584 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 585 struct nl80211_wiphy_data *w) 586 { 587 struct nl_msg *msg; 588 int ret = -1; 589 590 msg = nlmsg_alloc(); 591 if (!msg) 592 return -1; 593 594 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 595 596 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 597 598 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 599 msg = NULL; 600 if (ret) { 601 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 602 "failed: ret=%d (%s)", 603 ret, strerror(-ret)); 604 goto nla_put_failure; 605 } 606 ret = 0; 607 nla_put_failure: 608 nlmsg_free(msg); 609 return ret; 610 } 611 612 613 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 614 { 615 struct nl80211_wiphy_data *w = eloop_ctx; 616 617 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 618 619 nl_recvmsgs(handle, w->nl_cb); 620 } 621 622 623 static int process_beacon_event(struct nl_msg *msg, void *arg) 624 { 625 struct nl80211_wiphy_data *w = arg; 626 struct wpa_driver_nl80211_data *drv; 627 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 628 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 629 union wpa_event_data event; 630 631 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 632 genlmsg_attrlen(gnlh, 0), NULL); 633 634 if (gnlh->cmd != NL80211_CMD_FRAME) { 635 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 636 gnlh->cmd); 637 return NL_SKIP; 638 } 639 640 if (!tb[NL80211_ATTR_FRAME]) 641 return NL_SKIP; 642 643 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 644 wiphy_list) { 645 os_memset(&event, 0, sizeof(event)); 646 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 647 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 648 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 649 } 650 651 return NL_SKIP; 652 } 653 654 655 static struct nl80211_wiphy_data * 656 nl80211_get_wiphy_data_ap(struct i802_bss *bss) 657 { 658 static DEFINE_DL_LIST(nl80211_wiphys); 659 struct nl80211_wiphy_data *w; 660 int wiphy_idx, found = 0; 661 struct i802_bss *tmp_bss; 662 663 if (bss->wiphy_data != NULL) 664 return bss->wiphy_data; 665 666 wiphy_idx = nl80211_get_wiphy_index(bss); 667 668 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 669 if (w->wiphy_idx == wiphy_idx) 670 goto add; 671 } 672 673 /* alloc new one */ 674 w = os_zalloc(sizeof(*w)); 675 if (w == NULL) 676 return NULL; 677 w->wiphy_idx = wiphy_idx; 678 dl_list_init(&w->bsss); 679 dl_list_init(&w->drvs); 680 681 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 682 if (!w->nl_cb) { 683 os_free(w); 684 return NULL; 685 } 686 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 687 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 688 w); 689 690 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 691 "wiphy beacons"); 692 if (w->nl_beacons == NULL) { 693 os_free(w); 694 return NULL; 695 } 696 697 if (nl80211_register_beacons(bss->drv, w)) { 698 nl_destroy_handles(&w->nl_beacons); 699 os_free(w); 700 return NULL; 701 } 702 703 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons), 704 nl80211_recv_beacons, w, w->nl_beacons); 705 706 dl_list_add(&nl80211_wiphys, &w->list); 707 708 add: 709 /* drv entry for this bss already there? */ 710 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 711 if (tmp_bss->drv == bss->drv) { 712 found = 1; 713 break; 714 } 715 } 716 /* if not add it */ 717 if (!found) 718 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 719 720 dl_list_add(&w->bsss, &bss->wiphy_list); 721 bss->wiphy_data = w; 722 return w; 723 } 724 725 726 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 727 { 728 struct nl80211_wiphy_data *w = bss->wiphy_data; 729 struct i802_bss *tmp_bss; 730 int found = 0; 731 732 if (w == NULL) 733 return; 734 bss->wiphy_data = NULL; 735 dl_list_del(&bss->wiphy_list); 736 737 /* still any for this drv present? */ 738 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 739 if (tmp_bss->drv == bss->drv) { 740 found = 1; 741 break; 742 } 743 } 744 /* if not remove it */ 745 if (!found) 746 dl_list_del(&bss->drv->wiphy_list); 747 748 if (!dl_list_empty(&w->bsss)) 749 return; 750 751 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons)); 752 753 nl_cb_put(w->nl_cb); 754 nl_destroy_handles(&w->nl_beacons); 755 dl_list_del(&w->list); 756 os_free(w); 757 } 758 759 760 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 761 { 762 struct i802_bss *bss = priv; 763 struct wpa_driver_nl80211_data *drv = bss->drv; 764 if (!drv->associated) 765 return -1; 766 os_memcpy(bssid, drv->bssid, ETH_ALEN); 767 return 0; 768 } 769 770 771 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 772 { 773 struct i802_bss *bss = priv; 774 struct wpa_driver_nl80211_data *drv = bss->drv; 775 if (!drv->associated) 776 return -1; 777 os_memcpy(ssid, drv->ssid, drv->ssid_len); 778 return drv->ssid_len; 779 } 780 781 782 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 783 char *buf, size_t len, int del) 784 { 785 union wpa_event_data event; 786 787 os_memset(&event, 0, sizeof(event)); 788 if (len > sizeof(event.interface_status.ifname)) 789 len = sizeof(event.interface_status.ifname) - 1; 790 os_memcpy(event.interface_status.ifname, buf, len); 791 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 792 EVENT_INTERFACE_ADDED; 793 794 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 795 del ? "DEL" : "NEW", 796 event.interface_status.ifname, 797 del ? "removed" : "added"); 798 799 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 800 if (del) 801 drv->if_removed = 1; 802 else 803 drv->if_removed = 0; 804 } 805 806 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 807 } 808 809 810 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 811 u8 *buf, size_t len) 812 { 813 int attrlen, rta_len; 814 struct rtattr *attr; 815 816 attrlen = len; 817 attr = (struct rtattr *) buf; 818 819 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 820 while (RTA_OK(attr, attrlen)) { 821 if (attr->rta_type == IFLA_IFNAME) { 822 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 823 == 0) 824 return 1; 825 else 826 break; 827 } 828 attr = RTA_NEXT(attr, attrlen); 829 } 830 831 return 0; 832 } 833 834 835 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 836 int ifindex, u8 *buf, size_t len) 837 { 838 if (drv->ifindex == ifindex) 839 return 1; 840 841 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 842 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 843 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 844 "interface"); 845 wpa_driver_nl80211_finish_drv_init(drv); 846 return 1; 847 } 848 849 return 0; 850 } 851 852 853 static struct wpa_driver_nl80211_data * 854 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 855 { 856 struct wpa_driver_nl80211_data *drv; 857 dl_list_for_each(drv, &global->interfaces, 858 struct wpa_driver_nl80211_data, list) { 859 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 860 have_ifidx(drv, idx)) 861 return drv; 862 } 863 return NULL; 864 } 865 866 867 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 868 struct ifinfomsg *ifi, 869 u8 *buf, size_t len) 870 { 871 struct nl80211_global *global = ctx; 872 struct wpa_driver_nl80211_data *drv; 873 int attrlen, rta_len; 874 struct rtattr *attr; 875 u32 brid = 0; 876 char namebuf[IFNAMSIZ]; 877 878 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 879 if (!drv) { 880 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 881 "ifindex %d", ifi->ifi_index); 882 return; 883 } 884 885 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 886 "(%s%s%s%s)", 887 drv->operstate, ifi->ifi_flags, 888 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 889 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 890 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 891 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 892 893 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 894 if (if_indextoname(ifi->ifi_index, namebuf) && 895 linux_iface_up(drv->global->ioctl_sock, 896 drv->first_bss.ifname) > 0) { 897 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 898 "event since interface %s is up", namebuf); 899 return; 900 } 901 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 902 if (drv->ignore_if_down_event) { 903 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 904 "event generated by mode change"); 905 drv->ignore_if_down_event = 0; 906 } else { 907 drv->if_disabled = 1; 908 wpa_supplicant_event(drv->ctx, 909 EVENT_INTERFACE_DISABLED, NULL); 910 } 911 } 912 913 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 914 if (if_indextoname(ifi->ifi_index, namebuf) && 915 linux_iface_up(drv->global->ioctl_sock, 916 drv->first_bss.ifname) == 0) { 917 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 918 "event since interface %s is down", 919 namebuf); 920 } else { 921 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 922 drv->if_disabled = 0; 923 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 924 NULL); 925 } 926 } 927 928 /* 929 * Some drivers send the association event before the operup event--in 930 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 931 * fails. This will hit us when wpa_supplicant does not need to do 932 * IEEE 802.1X authentication 933 */ 934 if (drv->operstate == 1 && 935 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 936 !(ifi->ifi_flags & IFF_RUNNING)) 937 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 938 -1, IF_OPER_UP); 939 940 attrlen = len; 941 attr = (struct rtattr *) buf; 942 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 943 while (RTA_OK(attr, attrlen)) { 944 if (attr->rta_type == IFLA_IFNAME) { 945 wpa_driver_nl80211_event_link( 946 drv, 947 ((char *) attr) + rta_len, 948 attr->rta_len - rta_len, 0); 949 } else if (attr->rta_type == IFLA_MASTER) 950 brid = nla_get_u32((struct nlattr *) attr); 951 attr = RTA_NEXT(attr, attrlen); 952 } 953 954 if (ifi->ifi_family == AF_BRIDGE && brid) { 955 /* device has been added to bridge */ 956 if_indextoname(brid, namebuf); 957 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 958 brid, namebuf); 959 add_ifidx(drv, brid); 960 } 961 } 962 963 964 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 965 struct ifinfomsg *ifi, 966 u8 *buf, size_t len) 967 { 968 struct nl80211_global *global = ctx; 969 struct wpa_driver_nl80211_data *drv; 970 int attrlen, rta_len; 971 struct rtattr *attr; 972 u32 brid = 0; 973 974 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 975 if (!drv) { 976 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for " 977 "foreign ifindex %d", ifi->ifi_index); 978 return; 979 } 980 981 attrlen = len; 982 attr = (struct rtattr *) buf; 983 984 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 985 while (RTA_OK(attr, attrlen)) { 986 if (attr->rta_type == IFLA_IFNAME) { 987 wpa_driver_nl80211_event_link( 988 drv, 989 ((char *) attr) + rta_len, 990 attr->rta_len - rta_len, 1); 991 } else if (attr->rta_type == IFLA_MASTER) 992 brid = nla_get_u32((struct nlattr *) attr); 993 attr = RTA_NEXT(attr, attrlen); 994 } 995 996 if (ifi->ifi_family == AF_BRIDGE && brid) { 997 /* device has been removed from bridge */ 998 char namebuf[IFNAMSIZ]; 999 if_indextoname(brid, namebuf); 1000 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1001 "%s", brid, namebuf); 1002 del_ifidx(drv, brid); 1003 } 1004 } 1005 1006 1007 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1008 const u8 *frame, size_t len) 1009 { 1010 const struct ieee80211_mgmt *mgmt; 1011 union wpa_event_data event; 1012 1013 mgmt = (const struct ieee80211_mgmt *) frame; 1014 if (len < 24 + sizeof(mgmt->u.auth)) { 1015 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1016 "frame"); 1017 return; 1018 } 1019 1020 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1021 os_memset(&event, 0, sizeof(event)); 1022 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1023 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1024 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1025 if (len > 24 + sizeof(mgmt->u.auth)) { 1026 event.auth.ies = mgmt->u.auth.variable; 1027 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1028 } 1029 1030 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1031 } 1032 1033 1034 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1035 { 1036 struct nl_msg *msg; 1037 int ret; 1038 struct nl80211_bss_info_arg arg; 1039 1040 os_memset(&arg, 0, sizeof(arg)); 1041 msg = nlmsg_alloc(); 1042 if (!msg) 1043 goto nla_put_failure; 1044 1045 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1047 1048 arg.drv = drv; 1049 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1050 msg = NULL; 1051 if (ret == 0) { 1052 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1053 "associated BSS from scan results: %u MHz", 1054 arg.assoc_freq); 1055 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 1056 } 1057 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1058 "(%s)", ret, strerror(-ret)); 1059 nla_put_failure: 1060 nlmsg_free(msg); 1061 return drv->assoc_freq; 1062 } 1063 1064 1065 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1066 const u8 *frame, size_t len) 1067 { 1068 const struct ieee80211_mgmt *mgmt; 1069 union wpa_event_data event; 1070 u16 status; 1071 1072 mgmt = (const struct ieee80211_mgmt *) frame; 1073 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1074 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1075 "frame"); 1076 return; 1077 } 1078 1079 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1080 if (status != WLAN_STATUS_SUCCESS) { 1081 os_memset(&event, 0, sizeof(event)); 1082 event.assoc_reject.bssid = mgmt->bssid; 1083 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1084 event.assoc_reject.resp_ies = 1085 (u8 *) mgmt->u.assoc_resp.variable; 1086 event.assoc_reject.resp_ies_len = 1087 len - 24 - sizeof(mgmt->u.assoc_resp); 1088 } 1089 event.assoc_reject.status_code = status; 1090 1091 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1092 return; 1093 } 1094 1095 drv->associated = 1; 1096 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1097 1098 os_memset(&event, 0, sizeof(event)); 1099 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1100 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1101 event.assoc_info.resp_ies_len = 1102 len - 24 - sizeof(mgmt->u.assoc_resp); 1103 } 1104 1105 event.assoc_info.freq = drv->assoc_freq; 1106 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1107 } 1108 1109 1110 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1111 enum nl80211_commands cmd, struct nlattr *status, 1112 struct nlattr *addr, struct nlattr *req_ie, 1113 struct nlattr *resp_ie) 1114 { 1115 union wpa_event_data event; 1116 1117 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1118 /* 1119 * Avoid reporting two association events that would confuse 1120 * the core code. 1121 */ 1122 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1123 "when using userspace SME", cmd); 1124 return; 1125 } 1126 1127 os_memset(&event, 0, sizeof(event)); 1128 if (cmd == NL80211_CMD_CONNECT && 1129 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 1130 if (addr) 1131 event.assoc_reject.bssid = nla_data(addr); 1132 if (resp_ie) { 1133 event.assoc_reject.resp_ies = nla_data(resp_ie); 1134 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1135 } 1136 event.assoc_reject.status_code = nla_get_u16(status); 1137 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1138 return; 1139 } 1140 1141 drv->associated = 1; 1142 if (addr) 1143 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1144 1145 if (req_ie) { 1146 event.assoc_info.req_ies = nla_data(req_ie); 1147 event.assoc_info.req_ies_len = nla_len(req_ie); 1148 } 1149 if (resp_ie) { 1150 event.assoc_info.resp_ies = nla_data(resp_ie); 1151 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1152 } 1153 1154 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1155 1156 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1157 } 1158 1159 1160 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1161 struct nlattr *reason, struct nlattr *addr, 1162 struct nlattr *by_ap) 1163 { 1164 union wpa_event_data data; 1165 1166 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1167 /* 1168 * Avoid reporting two disassociation events that could 1169 * confuse the core code. 1170 */ 1171 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1172 "event when using userspace SME"); 1173 return; 1174 } 1175 1176 drv->associated = 0; 1177 os_memset(&data, 0, sizeof(data)); 1178 if (reason) 1179 data.disassoc_info.reason_code = nla_get_u16(reason); 1180 data.disassoc_info.locally_generated = by_ap == NULL; 1181 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data); 1182 } 1183 1184 1185 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1186 enum nl80211_commands cmd, struct nlattr *addr) 1187 { 1188 union wpa_event_data event; 1189 enum wpa_event_type ev; 1190 1191 if (nla_len(addr) != ETH_ALEN) 1192 return; 1193 1194 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1195 cmd, MAC2STR((u8 *) nla_data(addr))); 1196 1197 if (cmd == NL80211_CMD_AUTHENTICATE) 1198 ev = EVENT_AUTH_TIMED_OUT; 1199 else if (cmd == NL80211_CMD_ASSOCIATE) 1200 ev = EVENT_ASSOC_TIMED_OUT; 1201 else 1202 return; 1203 1204 os_memset(&event, 0, sizeof(event)); 1205 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1206 wpa_supplicant_event(drv->ctx, ev, &event); 1207 } 1208 1209 1210 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 1211 struct nlattr *freq, const u8 *frame, size_t len) 1212 { 1213 const struct ieee80211_mgmt *mgmt; 1214 union wpa_event_data event; 1215 u16 fc, stype; 1216 1217 mgmt = (const struct ieee80211_mgmt *) frame; 1218 if (len < 24) { 1219 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 1220 return; 1221 } 1222 1223 fc = le_to_host16(mgmt->frame_control); 1224 stype = WLAN_FC_GET_STYPE(fc); 1225 1226 os_memset(&event, 0, sizeof(event)); 1227 if (freq) { 1228 event.rx_action.freq = nla_get_u32(freq); 1229 drv->last_mgmt_freq = event.rx_action.freq; 1230 } 1231 if (stype == WLAN_FC_STYPE_ACTION) { 1232 event.rx_action.da = mgmt->da; 1233 event.rx_action.sa = mgmt->sa; 1234 event.rx_action.bssid = mgmt->bssid; 1235 event.rx_action.category = mgmt->u.action.category; 1236 event.rx_action.data = &mgmt->u.action.category + 1; 1237 event.rx_action.len = frame + len - event.rx_action.data; 1238 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 1239 } else { 1240 event.rx_mgmt.frame = frame; 1241 event.rx_mgmt.frame_len = len; 1242 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1243 } 1244 } 1245 1246 1247 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1248 struct nlattr *cookie, const u8 *frame, 1249 size_t len, struct nlattr *ack) 1250 { 1251 union wpa_event_data event; 1252 const struct ieee80211_hdr *hdr; 1253 u16 fc; 1254 1255 if (!is_ap_interface(drv->nlmode)) { 1256 u64 cookie_val; 1257 1258 if (!cookie) 1259 return; 1260 1261 cookie_val = nla_get_u64(cookie); 1262 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1263 " cookie=0%llx%s (ack=%d)", 1264 (long long unsigned int) cookie_val, 1265 cookie_val == drv->send_action_cookie ? 1266 " (match)" : " (unknown)", ack != NULL); 1267 if (cookie_val != drv->send_action_cookie) 1268 return; 1269 } 1270 1271 hdr = (const struct ieee80211_hdr *) frame; 1272 fc = le_to_host16(hdr->frame_control); 1273 1274 os_memset(&event, 0, sizeof(event)); 1275 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1276 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1277 event.tx_status.dst = hdr->addr1; 1278 event.tx_status.data = frame; 1279 event.tx_status.data_len = len; 1280 event.tx_status.ack = ack != NULL; 1281 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1282 } 1283 1284 1285 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1286 enum wpa_event_type type, 1287 const u8 *frame, size_t len) 1288 { 1289 const struct ieee80211_mgmt *mgmt; 1290 union wpa_event_data event; 1291 const u8 *bssid = NULL; 1292 u16 reason_code = 0; 1293 1294 mgmt = (const struct ieee80211_mgmt *) frame; 1295 if (len >= 24) { 1296 bssid = mgmt->bssid; 1297 1298 if (drv->associated != 0 && 1299 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1300 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1301 /* 1302 * We have presumably received this deauth as a 1303 * response to a clear_state_mismatch() outgoing 1304 * deauth. Don't let it take us offline! 1305 */ 1306 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1307 "from Unknown BSSID " MACSTR " -- ignoring", 1308 MAC2STR(bssid)); 1309 return; 1310 } 1311 } 1312 1313 drv->associated = 0; 1314 os_memset(&event, 0, sizeof(event)); 1315 1316 /* Note: Same offset for Reason Code in both frame subtypes */ 1317 if (len >= 24 + sizeof(mgmt->u.deauth)) 1318 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1319 1320 if (type == EVENT_DISASSOC) { 1321 event.disassoc_info.locally_generated = 1322 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1323 event.disassoc_info.addr = bssid; 1324 event.disassoc_info.reason_code = reason_code; 1325 if (frame + len > mgmt->u.disassoc.variable) { 1326 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1327 event.disassoc_info.ie_len = frame + len - 1328 mgmt->u.disassoc.variable; 1329 } 1330 } else { 1331 event.deauth_info.locally_generated = 1332 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN); 1333 event.deauth_info.addr = bssid; 1334 event.deauth_info.reason_code = reason_code; 1335 if (frame + len > mgmt->u.deauth.variable) { 1336 event.deauth_info.ie = mgmt->u.deauth.variable; 1337 event.deauth_info.ie_len = frame + len - 1338 mgmt->u.deauth.variable; 1339 } 1340 } 1341 1342 wpa_supplicant_event(drv->ctx, type, &event); 1343 } 1344 1345 1346 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1347 enum wpa_event_type type, 1348 const u8 *frame, size_t len) 1349 { 1350 const struct ieee80211_mgmt *mgmt; 1351 union wpa_event_data event; 1352 u16 reason_code = 0; 1353 1354 if (len < 24) 1355 return; 1356 1357 mgmt = (const struct ieee80211_mgmt *) frame; 1358 1359 os_memset(&event, 0, sizeof(event)); 1360 /* Note: Same offset for Reason Code in both frame subtypes */ 1361 if (len >= 24 + sizeof(mgmt->u.deauth)) 1362 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1363 1364 if (type == EVENT_UNPROT_DISASSOC) { 1365 event.unprot_disassoc.sa = mgmt->sa; 1366 event.unprot_disassoc.da = mgmt->da; 1367 event.unprot_disassoc.reason_code = reason_code; 1368 } else { 1369 event.unprot_deauth.sa = mgmt->sa; 1370 event.unprot_deauth.da = mgmt->da; 1371 event.unprot_deauth.reason_code = reason_code; 1372 } 1373 1374 wpa_supplicant_event(drv->ctx, type, &event); 1375 } 1376 1377 1378 static void mlme_event(struct wpa_driver_nl80211_data *drv, 1379 enum nl80211_commands cmd, struct nlattr *frame, 1380 struct nlattr *addr, struct nlattr *timed_out, 1381 struct nlattr *freq, struct nlattr *ack, 1382 struct nlattr *cookie) 1383 { 1384 if (timed_out && addr) { 1385 mlme_timeout_event(drv, cmd, addr); 1386 return; 1387 } 1388 1389 if (frame == NULL) { 1390 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 1391 "data", cmd); 1392 return; 1393 } 1394 1395 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 1396 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 1397 nla_data(frame), nla_len(frame)); 1398 1399 switch (cmd) { 1400 case NL80211_CMD_AUTHENTICATE: 1401 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1402 break; 1403 case NL80211_CMD_ASSOCIATE: 1404 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1405 break; 1406 case NL80211_CMD_DEAUTHENTICATE: 1407 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1408 nla_data(frame), nla_len(frame)); 1409 break; 1410 case NL80211_CMD_DISASSOCIATE: 1411 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1412 nla_data(frame), nla_len(frame)); 1413 break; 1414 case NL80211_CMD_FRAME: 1415 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame)); 1416 break; 1417 case NL80211_CMD_FRAME_TX_STATUS: 1418 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 1419 nla_len(frame), ack); 1420 break; 1421 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1422 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1423 nla_data(frame), nla_len(frame)); 1424 break; 1425 case NL80211_CMD_UNPROT_DISASSOCIATE: 1426 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1427 nla_data(frame), nla_len(frame)); 1428 break; 1429 default: 1430 break; 1431 } 1432 } 1433 1434 1435 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv, 1436 struct nlattr *tb[]) 1437 { 1438 union wpa_event_data data; 1439 1440 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1441 os_memset(&data, 0, sizeof(data)); 1442 if (tb[NL80211_ATTR_MAC]) { 1443 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1444 nla_data(tb[NL80211_ATTR_MAC]), 1445 nla_len(tb[NL80211_ATTR_MAC])); 1446 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1447 } 1448 if (tb[NL80211_ATTR_KEY_SEQ]) { 1449 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1450 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1451 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1452 } 1453 if (tb[NL80211_ATTR_KEY_TYPE]) { 1454 enum nl80211_key_type key_type = 1455 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1456 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1457 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1458 data.michael_mic_failure.unicast = 1; 1459 } else 1460 data.michael_mic_failure.unicast = 1; 1461 1462 if (tb[NL80211_ATTR_KEY_IDX]) { 1463 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1464 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1465 } 1466 1467 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1468 } 1469 1470 1471 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1472 struct nlattr *tb[]) 1473 { 1474 if (tb[NL80211_ATTR_MAC] == NULL) { 1475 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1476 "event"); 1477 return; 1478 } 1479 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1480 drv->associated = 1; 1481 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1482 MAC2STR(drv->bssid)); 1483 1484 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1485 } 1486 1487 1488 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1489 int cancel_event, struct nlattr *tb[]) 1490 { 1491 unsigned int freq, chan_type, duration; 1492 union wpa_event_data data; 1493 u64 cookie; 1494 1495 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1496 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1497 else 1498 freq = 0; 1499 1500 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1501 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1502 else 1503 chan_type = 0; 1504 1505 if (tb[NL80211_ATTR_DURATION]) 1506 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1507 else 1508 duration = 0; 1509 1510 if (tb[NL80211_ATTR_COOKIE]) 1511 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1512 else 1513 cookie = 0; 1514 1515 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1516 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1517 cancel_event, freq, chan_type, duration, 1518 (long long unsigned int) cookie, 1519 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1520 1521 if (cookie != drv->remain_on_chan_cookie) 1522 return; /* not for us */ 1523 1524 if (cancel_event) 1525 drv->pending_remain_on_chan = 0; 1526 1527 os_memset(&data, 0, sizeof(data)); 1528 data.remain_on_channel.freq = freq; 1529 data.remain_on_channel.duration = duration; 1530 wpa_supplicant_event(drv->ctx, cancel_event ? 1531 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1532 EVENT_REMAIN_ON_CHANNEL, &data); 1533 } 1534 1535 1536 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1537 struct nlattr *tb[]) 1538 { 1539 union wpa_event_data event; 1540 struct nlattr *nl; 1541 int rem; 1542 struct scan_info *info; 1543 #define MAX_REPORT_FREQS 50 1544 int freqs[MAX_REPORT_FREQS]; 1545 int num_freqs = 0; 1546 1547 if (drv->scan_for_auth) { 1548 drv->scan_for_auth = 0; 1549 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 1550 "cfg80211 BSS entry"); 1551 wpa_driver_nl80211_authenticate_retry(drv); 1552 return; 1553 } 1554 1555 os_memset(&event, 0, sizeof(event)); 1556 info = &event.scan_info; 1557 info->aborted = aborted; 1558 1559 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1560 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1561 struct wpa_driver_scan_ssid *s = 1562 &info->ssids[info->num_ssids]; 1563 s->ssid = nla_data(nl); 1564 s->ssid_len = nla_len(nl); 1565 info->num_ssids++; 1566 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1567 break; 1568 } 1569 } 1570 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1571 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1572 { 1573 freqs[num_freqs] = nla_get_u32(nl); 1574 num_freqs++; 1575 if (num_freqs == MAX_REPORT_FREQS - 1) 1576 break; 1577 } 1578 info->freqs = freqs; 1579 info->num_freqs = num_freqs; 1580 } 1581 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1582 } 1583 1584 1585 static int get_link_signal(struct nl_msg *msg, void *arg) 1586 { 1587 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1588 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1589 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1590 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1591 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1592 }; 1593 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1594 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1595 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1596 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1597 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1598 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1599 }; 1600 struct wpa_signal_info *sig_change = arg; 1601 1602 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1603 genlmsg_attrlen(gnlh, 0), NULL); 1604 if (!tb[NL80211_ATTR_STA_INFO] || 1605 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1606 tb[NL80211_ATTR_STA_INFO], policy)) 1607 return NL_SKIP; 1608 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1609 return NL_SKIP; 1610 1611 sig_change->current_signal = 1612 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1613 1614 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1615 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1616 sinfo[NL80211_STA_INFO_TX_BITRATE], 1617 rate_policy)) { 1618 sig_change->current_txrate = 0; 1619 } else { 1620 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1621 sig_change->current_txrate = 1622 nla_get_u16(rinfo[ 1623 NL80211_RATE_INFO_BITRATE]) * 100; 1624 } 1625 } 1626 } 1627 1628 return NL_SKIP; 1629 } 1630 1631 1632 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1633 struct wpa_signal_info *sig) 1634 { 1635 struct nl_msg *msg; 1636 1637 sig->current_signal = -9999; 1638 sig->current_txrate = 0; 1639 1640 msg = nlmsg_alloc(); 1641 if (!msg) 1642 return -ENOMEM; 1643 1644 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 1645 1646 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1647 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1648 1649 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1650 nla_put_failure: 1651 nlmsg_free(msg); 1652 return -ENOBUFS; 1653 } 1654 1655 1656 static int get_link_noise(struct nl_msg *msg, void *arg) 1657 { 1658 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1659 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1660 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1661 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1662 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1663 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1664 }; 1665 struct wpa_signal_info *sig_change = arg; 1666 1667 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1668 genlmsg_attrlen(gnlh, 0), NULL); 1669 1670 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1671 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1672 return NL_SKIP; 1673 } 1674 1675 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1676 tb[NL80211_ATTR_SURVEY_INFO], 1677 survey_policy)) { 1678 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1679 "attributes!"); 1680 return NL_SKIP; 1681 } 1682 1683 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1684 return NL_SKIP; 1685 1686 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1687 sig_change->frequency) 1688 return NL_SKIP; 1689 1690 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1691 return NL_SKIP; 1692 1693 sig_change->current_noise = 1694 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1695 1696 return NL_SKIP; 1697 } 1698 1699 1700 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1701 struct wpa_signal_info *sig_change) 1702 { 1703 struct nl_msg *msg; 1704 1705 sig_change->current_noise = 9999; 1706 sig_change->frequency = drv->assoc_freq; 1707 1708 msg = nlmsg_alloc(); 1709 if (!msg) 1710 return -ENOMEM; 1711 1712 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1713 1714 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1715 1716 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1717 nla_put_failure: 1718 nlmsg_free(msg); 1719 return -ENOBUFS; 1720 } 1721 1722 1723 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 1724 { 1725 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1726 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1727 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1728 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1729 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1730 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1731 }; 1732 struct wpa_scan_results *scan_results = arg; 1733 struct wpa_scan_res *scan_res; 1734 size_t i; 1735 1736 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1737 genlmsg_attrlen(gnlh, 0), NULL); 1738 1739 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1740 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 1741 return NL_SKIP; 1742 } 1743 1744 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1745 tb[NL80211_ATTR_SURVEY_INFO], 1746 survey_policy)) { 1747 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 1748 "attributes"); 1749 return NL_SKIP; 1750 } 1751 1752 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1753 return NL_SKIP; 1754 1755 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1756 return NL_SKIP; 1757 1758 for (i = 0; i < scan_results->num; ++i) { 1759 scan_res = scan_results->res[i]; 1760 if (!scan_res) 1761 continue; 1762 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1763 scan_res->freq) 1764 continue; 1765 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 1766 continue; 1767 scan_res->noise = (s8) 1768 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1769 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 1770 } 1771 1772 return NL_SKIP; 1773 } 1774 1775 1776 static int nl80211_get_noise_for_scan_results( 1777 struct wpa_driver_nl80211_data *drv, 1778 struct wpa_scan_results *scan_res) 1779 { 1780 struct nl_msg *msg; 1781 1782 msg = nlmsg_alloc(); 1783 if (!msg) 1784 return -ENOMEM; 1785 1786 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 1787 1788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1789 1790 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 1791 scan_res); 1792 nla_put_failure: 1793 nlmsg_free(msg); 1794 return -ENOBUFS; 1795 } 1796 1797 1798 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1799 struct nlattr *tb[]) 1800 { 1801 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1802 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1803 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1804 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1805 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1806 }; 1807 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1808 enum nl80211_cqm_rssi_threshold_event event; 1809 union wpa_event_data ed; 1810 struct wpa_signal_info sig; 1811 int res; 1812 1813 if (tb[NL80211_ATTR_CQM] == NULL || 1814 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1815 cqm_policy)) { 1816 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1817 return; 1818 } 1819 1820 os_memset(&ed, 0, sizeof(ed)); 1821 1822 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1823 if (!tb[NL80211_ATTR_MAC]) 1824 return; 1825 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1826 ETH_ALEN); 1827 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1828 return; 1829 } 1830 1831 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1832 return; 1833 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1834 1835 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1836 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1837 "event: RSSI high"); 1838 ed.signal_change.above_threshold = 1; 1839 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1840 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1841 "event: RSSI low"); 1842 ed.signal_change.above_threshold = 0; 1843 } else 1844 return; 1845 1846 res = nl80211_get_link_signal(drv, &sig); 1847 if (res == 0) { 1848 ed.signal_change.current_signal = sig.current_signal; 1849 ed.signal_change.current_txrate = sig.current_txrate; 1850 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1851 sig.current_signal, sig.current_txrate); 1852 } 1853 1854 res = nl80211_get_link_noise(drv, &sig); 1855 if (res == 0) { 1856 ed.signal_change.current_noise = sig.current_noise; 1857 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1858 sig.current_noise); 1859 } 1860 1861 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1862 } 1863 1864 1865 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1866 struct nlattr **tb) 1867 { 1868 u8 *addr; 1869 union wpa_event_data data; 1870 1871 if (tb[NL80211_ATTR_MAC] == NULL) 1872 return; 1873 addr = nla_data(tb[NL80211_ATTR_MAC]); 1874 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1875 1876 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1877 u8 *ies = NULL; 1878 size_t ies_len = 0; 1879 if (tb[NL80211_ATTR_IE]) { 1880 ies = nla_data(tb[NL80211_ATTR_IE]); 1881 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1882 } 1883 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1884 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1885 return; 1886 } 1887 1888 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1889 return; 1890 1891 os_memset(&data, 0, sizeof(data)); 1892 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 1893 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 1894 } 1895 1896 1897 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 1898 struct nlattr **tb) 1899 { 1900 u8 *addr; 1901 union wpa_event_data data; 1902 1903 if (tb[NL80211_ATTR_MAC] == NULL) 1904 return; 1905 addr = nla_data(tb[NL80211_ATTR_MAC]); 1906 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 1907 MAC2STR(addr)); 1908 1909 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 1910 drv_event_disassoc(drv->ctx, addr); 1911 return; 1912 } 1913 1914 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1915 return; 1916 1917 os_memset(&data, 0, sizeof(data)); 1918 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 1919 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 1920 } 1921 1922 1923 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 1924 struct nlattr **tb) 1925 { 1926 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 1927 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 1928 [NL80211_REKEY_DATA_KEK] = { 1929 .minlen = NL80211_KEK_LEN, 1930 .maxlen = NL80211_KEK_LEN, 1931 }, 1932 [NL80211_REKEY_DATA_KCK] = { 1933 .minlen = NL80211_KCK_LEN, 1934 .maxlen = NL80211_KCK_LEN, 1935 }, 1936 [NL80211_REKEY_DATA_REPLAY_CTR] = { 1937 .minlen = NL80211_REPLAY_CTR_LEN, 1938 .maxlen = NL80211_REPLAY_CTR_LEN, 1939 }, 1940 }; 1941 union wpa_event_data data; 1942 1943 if (!tb[NL80211_ATTR_MAC]) 1944 return; 1945 if (!tb[NL80211_ATTR_REKEY_DATA]) 1946 return; 1947 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 1948 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 1949 return; 1950 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 1951 return; 1952 1953 os_memset(&data, 0, sizeof(data)); 1954 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 1955 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 1956 MAC2STR(data.driver_gtk_rekey.bssid)); 1957 data.driver_gtk_rekey.replay_ctr = 1958 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 1959 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 1960 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 1961 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 1962 } 1963 1964 1965 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 1966 struct nlattr **tb) 1967 { 1968 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 1969 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 1970 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 1971 [NL80211_PMKSA_CANDIDATE_BSSID] = { 1972 .minlen = ETH_ALEN, 1973 .maxlen = ETH_ALEN, 1974 }, 1975 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 1976 }; 1977 union wpa_event_data data; 1978 1979 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 1980 return; 1981 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 1982 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 1983 return; 1984 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 1985 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 1986 return; 1987 1988 os_memset(&data, 0, sizeof(data)); 1989 os_memcpy(data.pmkid_candidate.bssid, 1990 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 1991 data.pmkid_candidate.index = 1992 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 1993 data.pmkid_candidate.preauth = 1994 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 1995 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 1996 } 1997 1998 1999 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2000 struct nlattr **tb) 2001 { 2002 union wpa_event_data data; 2003 2004 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2005 return; 2006 2007 os_memset(&data, 0, sizeof(data)); 2008 os_memcpy(data.client_poll.addr, 2009 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2010 2011 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2012 } 2013 2014 2015 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2016 int wds) 2017 { 2018 struct wpa_driver_nl80211_data *drv = bss->drv; 2019 union wpa_event_data event; 2020 2021 if (!tb[NL80211_ATTR_MAC]) 2022 return; 2023 2024 os_memset(&event, 0, sizeof(event)); 2025 event.rx_from_unknown.bssid = bss->addr; 2026 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2027 event.rx_from_unknown.wds = wds; 2028 2029 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2030 } 2031 2032 2033 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv, 2034 int cmd, struct nlattr **tb) 2035 { 2036 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 2037 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 2038 cmd == NL80211_CMD_SCAN_ABORTED)) { 2039 wpa_driver_nl80211_set_mode(&drv->first_bss, 2040 drv->ap_scan_as_station); 2041 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2042 } 2043 2044 switch (cmd) { 2045 case NL80211_CMD_TRIGGER_SCAN: 2046 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 2047 break; 2048 case NL80211_CMD_START_SCHED_SCAN: 2049 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started"); 2050 break; 2051 case NL80211_CMD_SCHED_SCAN_STOPPED: 2052 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped"); 2053 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 2054 break; 2055 case NL80211_CMD_NEW_SCAN_RESULTS: 2056 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 2057 drv->scan_complete_events = 1; 2058 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2059 drv->ctx); 2060 send_scan_event(drv, 0, tb); 2061 break; 2062 case NL80211_CMD_SCHED_SCAN_RESULTS: 2063 wpa_printf(MSG_DEBUG, 2064 "nl80211: New sched scan results available"); 2065 send_scan_event(drv, 0, tb); 2066 break; 2067 case NL80211_CMD_SCAN_ABORTED: 2068 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 2069 /* 2070 * Need to indicate that scan results are available in order 2071 * not to make wpa_supplicant stop its scanning. 2072 */ 2073 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 2074 drv->ctx); 2075 send_scan_event(drv, 1, tb); 2076 break; 2077 case NL80211_CMD_AUTHENTICATE: 2078 case NL80211_CMD_ASSOCIATE: 2079 case NL80211_CMD_DEAUTHENTICATE: 2080 case NL80211_CMD_DISASSOCIATE: 2081 case NL80211_CMD_FRAME_TX_STATUS: 2082 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2083 case NL80211_CMD_UNPROT_DISASSOCIATE: 2084 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME], 2085 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2086 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2087 tb[NL80211_ATTR_COOKIE]); 2088 break; 2089 case NL80211_CMD_CONNECT: 2090 case NL80211_CMD_ROAM: 2091 mlme_event_connect(drv, cmd, 2092 tb[NL80211_ATTR_STATUS_CODE], 2093 tb[NL80211_ATTR_MAC], 2094 tb[NL80211_ATTR_REQ_IE], 2095 tb[NL80211_ATTR_RESP_IE]); 2096 break; 2097 case NL80211_CMD_DISCONNECT: 2098 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 2099 tb[NL80211_ATTR_MAC], 2100 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 2101 break; 2102 case NL80211_CMD_MICHAEL_MIC_FAILURE: 2103 mlme_event_michael_mic_failure(drv, tb); 2104 break; 2105 case NL80211_CMD_JOIN_IBSS: 2106 mlme_event_join_ibss(drv, tb); 2107 break; 2108 case NL80211_CMD_REMAIN_ON_CHANNEL: 2109 mlme_event_remain_on_channel(drv, 0, tb); 2110 break; 2111 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 2112 mlme_event_remain_on_channel(drv, 1, tb); 2113 break; 2114 case NL80211_CMD_NOTIFY_CQM: 2115 nl80211_cqm_event(drv, tb); 2116 break; 2117 case NL80211_CMD_REG_CHANGE: 2118 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 2119 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2120 NULL); 2121 break; 2122 case NL80211_CMD_REG_BEACON_HINT: 2123 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 2124 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 2125 NULL); 2126 break; 2127 case NL80211_CMD_NEW_STATION: 2128 nl80211_new_station_event(drv, tb); 2129 break; 2130 case NL80211_CMD_DEL_STATION: 2131 nl80211_del_station_event(drv, tb); 2132 break; 2133 case NL80211_CMD_SET_REKEY_OFFLOAD: 2134 nl80211_rekey_offload_event(drv, tb); 2135 break; 2136 case NL80211_CMD_PMKSA_CANDIDATE: 2137 nl80211_pmksa_candidate_event(drv, tb); 2138 break; 2139 case NL80211_CMD_PROBE_CLIENT: 2140 nl80211_client_probe_event(drv, tb); 2141 break; 2142 default: 2143 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2144 "(cmd=%d)", cmd); 2145 break; 2146 } 2147 } 2148 2149 2150 static int process_drv_event(struct nl_msg *msg, void *arg) 2151 { 2152 struct wpa_driver_nl80211_data *drv = arg; 2153 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2154 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2155 2156 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2157 genlmsg_attrlen(gnlh, 0), NULL); 2158 2159 if (tb[NL80211_ATTR_IFINDEX]) { 2160 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2161 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) { 2162 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" 2163 " for foreign interface (ifindex %d)", 2164 gnlh->cmd, ifindex); 2165 return NL_SKIP; 2166 } 2167 } 2168 2169 do_process_drv_event(drv, gnlh->cmd, tb); 2170 return NL_SKIP; 2171 } 2172 2173 2174 static int process_global_event(struct nl_msg *msg, void *arg) 2175 { 2176 struct nl80211_global *global = arg; 2177 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2178 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2179 struct wpa_driver_nl80211_data *drv; 2180 int ifidx = -1; 2181 2182 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2183 genlmsg_attrlen(gnlh, 0), NULL); 2184 2185 if (tb[NL80211_ATTR_IFINDEX]) 2186 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2187 2188 dl_list_for_each(drv, &global->interfaces, 2189 struct wpa_driver_nl80211_data, list) { 2190 if (ifidx == -1 || ifidx == drv->ifindex || 2191 have_ifidx(drv, ifidx)) { 2192 do_process_drv_event(drv, gnlh->cmd, tb); 2193 #ifdef ANDROID_P2P 2194 break; 2195 #endif 2196 } 2197 } 2198 2199 return NL_SKIP; 2200 } 2201 2202 2203 static int process_bss_event(struct nl_msg *msg, void *arg) 2204 { 2205 struct i802_bss *bss = arg; 2206 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2207 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2208 2209 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2210 genlmsg_attrlen(gnlh, 0), NULL); 2211 2212 switch (gnlh->cmd) { 2213 case NL80211_CMD_FRAME: 2214 case NL80211_CMD_FRAME_TX_STATUS: 2215 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 2216 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 2217 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 2218 tb[NL80211_ATTR_COOKIE]); 2219 break; 2220 case NL80211_CMD_UNEXPECTED_FRAME: 2221 nl80211_spurious_frame(bss, tb, 0); 2222 break; 2223 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 2224 nl80211_spurious_frame(bss, tb, 1); 2225 break; 2226 default: 2227 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 2228 "(cmd=%d)", gnlh->cmd); 2229 break; 2230 } 2231 2232 return NL_SKIP; 2233 } 2234 2235 2236 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 2237 void *handle) 2238 { 2239 struct nl_cb *cb = eloop_ctx; 2240 2241 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 2242 2243 nl_recvmsgs(handle, cb); 2244 } 2245 2246 2247 /** 2248 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 2249 * @priv: driver_nl80211 private data 2250 * @alpha2_arg: country to which to switch to 2251 * Returns: 0 on success, -1 on failure 2252 * 2253 * This asks nl80211 to set the regulatory domain for given 2254 * country ISO / IEC alpha2. 2255 */ 2256 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 2257 { 2258 struct i802_bss *bss = priv; 2259 struct wpa_driver_nl80211_data *drv = bss->drv; 2260 char alpha2[3]; 2261 struct nl_msg *msg; 2262 2263 msg = nlmsg_alloc(); 2264 if (!msg) 2265 return -ENOMEM; 2266 2267 alpha2[0] = alpha2_arg[0]; 2268 alpha2[1] = alpha2_arg[1]; 2269 alpha2[2] = '\0'; 2270 2271 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 2272 2273 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 2274 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 2275 return -EINVAL; 2276 return 0; 2277 nla_put_failure: 2278 nlmsg_free(msg); 2279 return -EINVAL; 2280 } 2281 2282 2283 struct wiphy_info_data { 2284 struct wpa_driver_capa *capa; 2285 2286 unsigned int error:1; 2287 unsigned int device_ap_sme:1; 2288 unsigned int poll_command_supported:1; 2289 unsigned int data_tx_status:1; 2290 unsigned int monitor_supported:1; 2291 }; 2292 2293 2294 static unsigned int probe_resp_offload_support(int supp_protocols) 2295 { 2296 unsigned int prot = 0; 2297 2298 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 2299 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 2300 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 2301 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 2302 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 2303 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 2304 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 2305 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 2306 2307 return prot; 2308 } 2309 2310 2311 static int wiphy_info_handler(struct nl_msg *msg, void *arg) 2312 { 2313 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2314 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2315 struct wiphy_info_data *info = arg; 2316 int p2p_go_supported = 0, p2p_client_supported = 0; 2317 int p2p_concurrent = 0; 2318 int auth_supported = 0, connect_supported = 0; 2319 struct wpa_driver_capa *capa = info->capa; 2320 static struct nla_policy 2321 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 2322 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 2323 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 2324 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 2325 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 2326 }, 2327 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 2328 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 2329 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 2330 }; 2331 2332 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2333 genlmsg_attrlen(gnlh, 0), NULL); 2334 2335 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 2336 capa->max_scan_ssids = 2337 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 2338 2339 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 2340 capa->max_sched_scan_ssids = 2341 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 2342 2343 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 2344 capa->max_match_sets = 2345 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 2346 2347 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { 2348 struct nlattr *nl_mode; 2349 int i; 2350 nla_for_each_nested(nl_mode, 2351 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { 2352 switch (nla_type(nl_mode)) { 2353 case NL80211_IFTYPE_AP: 2354 capa->flags |= WPA_DRIVER_FLAGS_AP; 2355 break; 2356 case NL80211_IFTYPE_P2P_GO: 2357 p2p_go_supported = 1; 2358 break; 2359 case NL80211_IFTYPE_P2P_CLIENT: 2360 p2p_client_supported = 1; 2361 break; 2362 case NL80211_IFTYPE_MONITOR: 2363 info->monitor_supported = 1; 2364 break; 2365 } 2366 } 2367 } 2368 2369 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) { 2370 struct nlattr *nl_combi; 2371 int rem_combi; 2372 2373 nla_for_each_nested(nl_combi, 2374 tb[NL80211_ATTR_INTERFACE_COMBINATIONS], 2375 rem_combi) { 2376 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 2377 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 2378 struct nlattr *nl_limit, *nl_mode; 2379 int err, rem_limit, rem_mode; 2380 int combination_has_p2p = 0, combination_has_mgd = 0; 2381 2382 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 2383 nl_combi, 2384 iface_combination_policy); 2385 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 2386 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 2387 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 2388 goto broken_combination; 2389 2390 nla_for_each_nested(nl_limit, 2391 tb_comb[NL80211_IFACE_COMB_LIMITS], 2392 rem_limit) { 2393 err = nla_parse_nested(tb_limit, 2394 MAX_NL80211_IFACE_LIMIT, 2395 nl_limit, 2396 iface_limit_policy); 2397 if (err || 2398 !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 2399 goto broken_combination; 2400 2401 nla_for_each_nested( 2402 nl_mode, 2403 tb_limit[NL80211_IFACE_LIMIT_TYPES], 2404 rem_mode) { 2405 int ift = nla_type(nl_mode); 2406 if (ift == NL80211_IFTYPE_P2P_GO || 2407 ift == NL80211_IFTYPE_P2P_CLIENT) 2408 combination_has_p2p = 1; 2409 if (ift == NL80211_IFTYPE_STATION) 2410 combination_has_mgd = 1; 2411 } 2412 if (combination_has_p2p && combination_has_mgd) 2413 break; 2414 } 2415 2416 if (combination_has_p2p && combination_has_mgd) { 2417 p2p_concurrent = 1; 2418 break; 2419 } 2420 2421 broken_combination: 2422 ; 2423 } 2424 } 2425 2426 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { 2427 struct nlattr *nl_cmd; 2428 int i; 2429 2430 nla_for_each_nested(nl_cmd, 2431 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { 2432 switch (nla_get_u32(nl_cmd)) { 2433 case NL80211_CMD_AUTHENTICATE: 2434 auth_supported = 1; 2435 break; 2436 case NL80211_CMD_CONNECT: 2437 connect_supported = 1; 2438 break; 2439 case NL80211_CMD_START_SCHED_SCAN: 2440 capa->sched_scan_supported = 1; 2441 break; 2442 case NL80211_CMD_PROBE_CLIENT: 2443 info->poll_command_supported = 1; 2444 break; 2445 } 2446 } 2447 } 2448 2449 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 2450 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 2451 "off-channel TX"); 2452 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 2453 } 2454 2455 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 2456 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 2457 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 2458 } 2459 2460 /* default to 5000 since early versions of mac80211 don't set it */ 2461 capa->max_remain_on_chan = 5000; 2462 2463 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 2464 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 2465 2466 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) 2467 capa->max_remain_on_chan = 2468 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 2469 2470 if (auth_supported) 2471 capa->flags |= WPA_DRIVER_FLAGS_SME; 2472 else if (!connect_supported) { 2473 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 2474 "authentication/association or connect commands"); 2475 info->error = 1; 2476 } 2477 2478 if (p2p_go_supported && p2p_client_supported) 2479 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 2480 if (p2p_concurrent) { 2481 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 2482 "interface (driver advertised support)"); 2483 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 2484 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 2485 } 2486 2487 if (tb[NL80211_ATTR_TDLS_SUPPORT]) { 2488 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 2489 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 2490 2491 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) { 2492 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 2493 capa->flags |= 2494 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 2495 } 2496 } 2497 #ifndef ANDROID_P2P 2498 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 2499 #endif 2500 info->device_ap_sme = 1; 2501 2502 if (tb[NL80211_ATTR_FEATURE_FLAGS]) { 2503 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]); 2504 2505 if (flags & NL80211_FEATURE_SK_TX_STATUS) 2506 info->data_tx_status = 1; 2507 } 2508 2509 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) { 2510 int protocols = 2511 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 2512 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response " 2513 "offload in AP mode"); 2514 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 2515 capa->probe_resp_offloads = 2516 probe_resp_offload_support(protocols); 2517 } 2518 2519 return NL_SKIP; 2520 } 2521 2522 2523 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 2524 struct wiphy_info_data *info) 2525 { 2526 struct nl_msg *msg; 2527 2528 os_memset(info, 0, sizeof(*info)); 2529 info->capa = &drv->capa; 2530 2531 msg = nlmsg_alloc(); 2532 if (!msg) 2533 return -1; 2534 2535 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 2536 2537 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 2538 2539 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 2540 return 0; 2541 msg = NULL; 2542 nla_put_failure: 2543 nlmsg_free(msg); 2544 return -1; 2545 } 2546 2547 2548 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 2549 { 2550 struct wiphy_info_data info; 2551 if (wpa_driver_nl80211_get_info(drv, &info)) 2552 return -1; 2553 2554 if (info.error) 2555 return -1; 2556 2557 drv->has_capability = 1; 2558 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 2559 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 2560 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 2561 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 2562 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 2563 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 2564 WPA_DRIVER_CAPA_ENC_WEP104 | 2565 WPA_DRIVER_CAPA_ENC_TKIP | 2566 WPA_DRIVER_CAPA_ENC_CCMP; 2567 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 2568 WPA_DRIVER_AUTH_SHARED | 2569 WPA_DRIVER_AUTH_LEAP; 2570 2571 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 2572 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 2573 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2574 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 2575 2576 drv->device_ap_sme = info.device_ap_sme; 2577 drv->poll_command_supported = info.poll_command_supported; 2578 drv->data_tx_status = info.data_tx_status; 2579 2580 /* 2581 * If poll command is supported mac80211 is new enough to 2582 * have everything we need to not need monitor interfaces. 2583 */ 2584 drv->use_monitor = !info.poll_command_supported; 2585 2586 if (drv->device_ap_sme && drv->use_monitor) { 2587 /* 2588 * Non-mac80211 drivers may not support monitor interface. 2589 * Make sure we do not get stuck with incorrect capability here 2590 * by explicitly testing this. 2591 */ 2592 if (!info.monitor_supported) { 2593 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 2594 "with device_ap_sme since no monitor mode " 2595 "support detected"); 2596 drv->use_monitor = 0; 2597 } 2598 } 2599 2600 /* 2601 * If we aren't going to use monitor interfaces, but the 2602 * driver doesn't support data TX status, we won't get TX 2603 * status for EAPOL frames. 2604 */ 2605 if (!drv->use_monitor && !info.data_tx_status) 2606 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2607 2608 return 0; 2609 } 2610 2611 2612 #ifdef ANDROID 2613 static int android_genl_ctrl_resolve(struct nl_handle *handle, 2614 const char *name) 2615 { 2616 /* 2617 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 2618 * need to work around that. 2619 */ 2620 struct nl_cache *cache = NULL; 2621 struct genl_family *nl80211 = NULL; 2622 int id = -1; 2623 2624 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 2625 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 2626 "netlink cache"); 2627 goto fail; 2628 } 2629 2630 nl80211 = genl_ctrl_search_by_name(cache, name); 2631 if (nl80211 == NULL) 2632 goto fail; 2633 2634 id = genl_family_get_id(nl80211); 2635 2636 fail: 2637 if (nl80211) 2638 genl_family_put(nl80211); 2639 if (cache) 2640 nl_cache_free(cache); 2641 2642 return id; 2643 } 2644 #define genl_ctrl_resolve android_genl_ctrl_resolve 2645 #endif /* ANDROID */ 2646 2647 2648 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 2649 { 2650 int ret; 2651 2652 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2653 if (global->nl_cb == NULL) { 2654 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 2655 "callbacks"); 2656 return -1; 2657 } 2658 2659 global->nl = nl_create_handle(global->nl_cb, "nl"); 2660 if (global->nl == NULL) 2661 goto err; 2662 2663 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 2664 if (global->nl80211_id < 0) { 2665 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 2666 "found"); 2667 goto err; 2668 } 2669 2670 global->nl_event = nl_create_handle(global->nl_cb, "event"); 2671 if (global->nl_event == NULL) 2672 goto err; 2673 2674 ret = nl_get_multicast_id(global, "nl80211", "scan"); 2675 if (ret >= 0) 2676 ret = nl_socket_add_membership(global->nl_event, ret); 2677 if (ret < 0) { 2678 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2679 "membership for scan events: %d (%s)", 2680 ret, strerror(-ret)); 2681 goto err; 2682 } 2683 2684 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 2685 if (ret >= 0) 2686 ret = nl_socket_add_membership(global->nl_event, ret); 2687 if (ret < 0) { 2688 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 2689 "membership for mlme events: %d (%s)", 2690 ret, strerror(-ret)); 2691 goto err; 2692 } 2693 2694 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 2695 if (ret >= 0) 2696 ret = nl_socket_add_membership(global->nl_event, ret); 2697 if (ret < 0) { 2698 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 2699 "membership for regulatory events: %d (%s)", 2700 ret, strerror(-ret)); 2701 /* Continue without regulatory events */ 2702 } 2703 2704 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2705 no_seq_check, NULL); 2706 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2707 process_global_event, global); 2708 2709 eloop_register_read_sock(nl_socket_get_fd(global->nl_event), 2710 wpa_driver_nl80211_event_receive, 2711 global->nl_cb, global->nl_event); 2712 2713 return 0; 2714 2715 err: 2716 nl_destroy_handles(&global->nl_event); 2717 nl_destroy_handles(&global->nl); 2718 nl_cb_put(global->nl_cb); 2719 global->nl_cb = NULL; 2720 return -1; 2721 } 2722 2723 2724 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 2725 { 2726 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2727 if (!drv->nl_cb) { 2728 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 2729 return -1; 2730 } 2731 2732 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2733 no_seq_check, NULL); 2734 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2735 process_drv_event, drv); 2736 2737 return 0; 2738 } 2739 2740 2741 static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 2742 { 2743 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 2744 /* 2745 * This may be for any interface; use ifdown event to disable 2746 * interface. 2747 */ 2748 } 2749 2750 2751 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 2752 { 2753 struct wpa_driver_nl80211_data *drv = ctx; 2754 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 2755 if (linux_set_iface_flags(drv->global->ioctl_sock, 2756 drv->first_bss.ifname, 1)) { 2757 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 2758 "after rfkill unblock"); 2759 return; 2760 } 2761 /* rtnetlink ifup handler will report interface as enabled */ 2762 } 2763 2764 2765 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 2766 { 2767 /* Find phy (radio) to which this interface belongs */ 2768 char buf[90], *pos; 2769 int f, rv; 2770 2771 drv->phyname[0] = '\0'; 2772 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 2773 drv->first_bss.ifname); 2774 f = open(buf, O_RDONLY); 2775 if (f < 0) { 2776 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 2777 buf, strerror(errno)); 2778 return; 2779 } 2780 2781 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 2782 close(f); 2783 if (rv < 0) { 2784 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 2785 buf, strerror(errno)); 2786 return; 2787 } 2788 2789 drv->phyname[rv] = '\0'; 2790 pos = os_strchr(drv->phyname, '\n'); 2791 if (pos) 2792 *pos = '\0'; 2793 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 2794 drv->first_bss.ifname, drv->phyname); 2795 } 2796 2797 2798 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 2799 void *eloop_ctx, 2800 void *handle) 2801 { 2802 struct wpa_driver_nl80211_data *drv = eloop_ctx; 2803 u8 data[2048]; 2804 struct msghdr msg; 2805 struct iovec entry; 2806 struct { 2807 struct cmsghdr cm; 2808 char control[512]; 2809 } control; 2810 struct cmsghdr *cmsg; 2811 int res, found_ee = 0, found_wifi = 0, acked = 0; 2812 union wpa_event_data event; 2813 2814 memset(&msg, 0, sizeof(msg)); 2815 msg.msg_iov = &entry; 2816 msg.msg_iovlen = 1; 2817 entry.iov_base = data; 2818 entry.iov_len = sizeof(data); 2819 msg.msg_control = &control; 2820 msg.msg_controllen = sizeof(control); 2821 2822 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 2823 /* if error or not fitting 802.3 header, return */ 2824 if (res < 14) 2825 return; 2826 2827 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 2828 { 2829 if (cmsg->cmsg_level == SOL_SOCKET && 2830 cmsg->cmsg_type == SCM_WIFI_STATUS) { 2831 int *ack; 2832 2833 found_wifi = 1; 2834 ack = (void *)CMSG_DATA(cmsg); 2835 acked = *ack; 2836 } 2837 2838 if (cmsg->cmsg_level == SOL_PACKET && 2839 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 2840 struct sock_extended_err *err = 2841 (struct sock_extended_err *)CMSG_DATA(cmsg); 2842 2843 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 2844 found_ee = 1; 2845 } 2846 } 2847 2848 if (!found_ee || !found_wifi) 2849 return; 2850 2851 memset(&event, 0, sizeof(event)); 2852 event.eapol_tx_status.dst = data; 2853 event.eapol_tx_status.data = data + 14; 2854 event.eapol_tx_status.data_len = res - 14; 2855 event.eapol_tx_status.ack = acked; 2856 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 2857 } 2858 2859 2860 static int nl80211_init_bss(struct i802_bss *bss) 2861 { 2862 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 2863 if (!bss->nl_cb) 2864 return -1; 2865 2866 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 2867 no_seq_check, NULL); 2868 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 2869 process_bss_event, bss); 2870 2871 return 0; 2872 } 2873 2874 2875 static void nl80211_destroy_bss(struct i802_bss *bss) 2876 { 2877 nl_cb_put(bss->nl_cb); 2878 bss->nl_cb = NULL; 2879 } 2880 2881 2882 /** 2883 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 2884 * @ctx: context to be used when calling wpa_supplicant functions, 2885 * e.g., wpa_supplicant_event() 2886 * @ifname: interface name, e.g., wlan0 2887 * @global_priv: private driver global data from global_init() 2888 * Returns: Pointer to private data, %NULL on failure 2889 */ 2890 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 2891 void *global_priv) 2892 { 2893 struct wpa_driver_nl80211_data *drv; 2894 struct rfkill_config *rcfg; 2895 struct i802_bss *bss; 2896 2897 if (global_priv == NULL) 2898 return NULL; 2899 drv = os_zalloc(sizeof(*drv)); 2900 if (drv == NULL) 2901 return NULL; 2902 drv->global = global_priv; 2903 drv->ctx = ctx; 2904 bss = &drv->first_bss; 2905 bss->drv = drv; 2906 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 2907 drv->monitor_ifidx = -1; 2908 drv->monitor_sock = -1; 2909 drv->eapol_tx_sock = -1; 2910 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 2911 2912 if (wpa_driver_nl80211_init_nl(drv)) { 2913 os_free(drv); 2914 return NULL; 2915 } 2916 2917 if (nl80211_init_bss(bss)) 2918 goto failed; 2919 2920 nl80211_get_phy_name(drv); 2921 2922 rcfg = os_zalloc(sizeof(*rcfg)); 2923 if (rcfg == NULL) 2924 goto failed; 2925 rcfg->ctx = drv; 2926 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 2927 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 2928 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 2929 drv->rfkill = rfkill_init(rcfg); 2930 if (drv->rfkill == NULL) { 2931 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 2932 os_free(rcfg); 2933 } 2934 2935 if (wpa_driver_nl80211_finish_drv_init(drv)) 2936 goto failed; 2937 2938 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 2939 if (drv->eapol_tx_sock < 0) 2940 goto failed; 2941 2942 if (drv->data_tx_status) { 2943 int enabled = 1; 2944 2945 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 2946 &enabled, sizeof(enabled)) < 0) { 2947 wpa_printf(MSG_DEBUG, 2948 "nl80211: wifi status sockopt failed\n"); 2949 drv->data_tx_status = 0; 2950 if (!drv->use_monitor) 2951 drv->capa.flags &= 2952 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 2953 } else { 2954 eloop_register_read_sock(drv->eapol_tx_sock, 2955 wpa_driver_nl80211_handle_eapol_tx_status, 2956 drv, NULL); 2957 } 2958 } 2959 2960 if (drv->global) { 2961 dl_list_add(&drv->global->interfaces, &drv->list); 2962 drv->in_interface_list = 1; 2963 } 2964 2965 return bss; 2966 2967 failed: 2968 wpa_driver_nl80211_deinit(bss); 2969 return NULL; 2970 } 2971 2972 2973 static int nl80211_register_frame(struct i802_bss *bss, 2974 struct nl_handle *nl_handle, 2975 u16 type, const u8 *match, size_t match_len) 2976 { 2977 struct wpa_driver_nl80211_data *drv = bss->drv; 2978 struct nl_msg *msg; 2979 int ret = -1; 2980 2981 msg = nlmsg_alloc(); 2982 if (!msg) 2983 return -1; 2984 2985 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p", 2986 type, nl_handle); 2987 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 2988 match, match_len); 2989 2990 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 2991 2992 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 2993 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 2994 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 2995 2996 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 2997 msg = NULL; 2998 if (ret) { 2999 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 3000 "failed (type=%u): ret=%d (%s)", 3001 type, ret, strerror(-ret)); 3002 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 3003 match, match_len); 3004 goto nla_put_failure; 3005 } 3006 ret = 0; 3007 nla_put_failure: 3008 nlmsg_free(msg); 3009 return ret; 3010 } 3011 3012 3013 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 3014 { 3015 struct wpa_driver_nl80211_data *drv = bss->drv; 3016 3017 if (bss->nl_mgmt) { 3018 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 3019 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 3020 return -1; 3021 } 3022 3023 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 3024 if (bss->nl_mgmt == NULL) 3025 return -1; 3026 3027 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt), 3028 wpa_driver_nl80211_event_receive, bss->nl_cb, 3029 bss->nl_mgmt); 3030 3031 return 0; 3032 } 3033 3034 3035 static int nl80211_register_action_frame(struct i802_bss *bss, 3036 const u8 *match, size_t match_len) 3037 { 3038 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 3039 return nl80211_register_frame(bss, bss->nl_mgmt, 3040 type, match, match_len); 3041 } 3042 3043 3044 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 3045 { 3046 struct wpa_driver_nl80211_data *drv = bss->drv; 3047 3048 if (nl80211_alloc_mgmt_handle(bss)) 3049 return -1; 3050 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 3051 "handle %p", bss->nl_mgmt); 3052 3053 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 3054 /* GAS Initial Request */ 3055 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 3056 return -1; 3057 /* GAS Initial Response */ 3058 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 3059 return -1; 3060 /* GAS Comeback Request */ 3061 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 3062 return -1; 3063 /* GAS Comeback Response */ 3064 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 3065 return -1; 3066 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 3067 #ifdef CONFIG_P2P 3068 /* P2P Public Action */ 3069 if (nl80211_register_action_frame(bss, 3070 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 3071 6) < 0) 3072 return -1; 3073 /* P2P Action */ 3074 if (nl80211_register_action_frame(bss, 3075 (u8 *) "\x7f\x50\x6f\x9a\x09", 3076 5) < 0) 3077 return -1; 3078 #endif /* CONFIG_P2P */ 3079 #ifdef CONFIG_IEEE80211W 3080 /* SA Query Response */ 3081 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 3082 return -1; 3083 #endif /* CONFIG_IEEE80211W */ 3084 #ifdef CONFIG_TDLS 3085 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 3086 /* TDLS Discovery Response */ 3087 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 3088 0) 3089 return -1; 3090 } 3091 #endif /* CONFIG_TDLS */ 3092 3093 /* FT Action frames */ 3094 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 3095 return -1; 3096 else 3097 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 3098 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 3099 3100 /* WNM - BSS Transition Management Request */ 3101 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 3102 return -1; 3103 3104 return 0; 3105 } 3106 3107 3108 static int nl80211_register_spurious_class3(struct i802_bss *bss) 3109 { 3110 struct wpa_driver_nl80211_data *drv = bss->drv; 3111 struct nl_msg *msg; 3112 int ret = -1; 3113 3114 msg = nlmsg_alloc(); 3115 if (!msg) 3116 return -1; 3117 3118 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 3119 3120 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 3121 3122 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 3123 msg = NULL; 3124 if (ret) { 3125 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 3126 "failed: ret=%d (%s)", 3127 ret, strerror(-ret)); 3128 goto nla_put_failure; 3129 } 3130 ret = 0; 3131 nla_put_failure: 3132 nlmsg_free(msg); 3133 return ret; 3134 } 3135 3136 3137 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 3138 { 3139 static const int stypes[] = { 3140 WLAN_FC_STYPE_AUTH, 3141 WLAN_FC_STYPE_ASSOC_REQ, 3142 WLAN_FC_STYPE_REASSOC_REQ, 3143 WLAN_FC_STYPE_DISASSOC, 3144 WLAN_FC_STYPE_DEAUTH, 3145 WLAN_FC_STYPE_ACTION, 3146 WLAN_FC_STYPE_PROBE_REQ, 3147 /* Beacon doesn't work as mac80211 doesn't currently allow 3148 * it, but it wouldn't really be the right thing anyway as 3149 * it isn't per interface ... maybe just dump the scan 3150 * results periodically for OLBC? 3151 */ 3152 // WLAN_FC_STYPE_BEACON, 3153 }; 3154 unsigned int i; 3155 3156 if (nl80211_alloc_mgmt_handle(bss)) 3157 return -1; 3158 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3159 "handle %p", bss->nl_mgmt); 3160 3161 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) { 3162 if (nl80211_register_frame(bss, bss->nl_mgmt, 3163 (WLAN_FC_TYPE_MGMT << 2) | 3164 (stypes[i] << 4), 3165 NULL, 0) < 0) { 3166 goto out_err; 3167 } 3168 } 3169 3170 if (nl80211_register_spurious_class3(bss)) 3171 goto out_err; 3172 3173 if (nl80211_get_wiphy_data_ap(bss) == NULL) 3174 goto out_err; 3175 3176 return 0; 3177 3178 out_err: 3179 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3180 nl_destroy_handles(&bss->nl_mgmt); 3181 return -1; 3182 } 3183 3184 3185 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 3186 { 3187 if (nl80211_alloc_mgmt_handle(bss)) 3188 return -1; 3189 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 3190 "handle %p (device SME)", bss->nl_mgmt); 3191 3192 if (nl80211_register_frame(bss, bss->nl_mgmt, 3193 (WLAN_FC_TYPE_MGMT << 2) | 3194 (WLAN_FC_STYPE_ACTION << 4), 3195 NULL, 0) < 0) 3196 goto out_err; 3197 3198 return 0; 3199 3200 out_err: 3201 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3202 nl_destroy_handles(&bss->nl_mgmt); 3203 return -1; 3204 } 3205 3206 3207 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 3208 { 3209 if (bss->nl_mgmt == NULL) 3210 return; 3211 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 3212 "(%s)", bss->nl_mgmt, reason); 3213 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt)); 3214 nl_destroy_handles(&bss->nl_mgmt); 3215 3216 nl80211_put_wiphy_data_ap(bss); 3217 } 3218 3219 3220 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 3221 { 3222 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 3223 } 3224 3225 3226 static int 3227 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 3228 { 3229 struct i802_bss *bss = &drv->first_bss; 3230 int send_rfkill_event = 0; 3231 3232 drv->ifindex = if_nametoindex(bss->ifname); 3233 drv->first_bss.ifindex = drv->ifindex; 3234 3235 #ifndef HOSTAPD 3236 /* 3237 * Make sure the interface starts up in station mode unless this is a 3238 * dynamically added interface (e.g., P2P) that was already configured 3239 * with proper iftype. 3240 */ 3241 if (drv->ifindex != drv->global->if_add_ifindex && 3242 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) { 3243 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to " 3244 "use managed mode"); 3245 return -1; 3246 } 3247 3248 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 3249 if (rfkill_is_blocked(drv->rfkill)) { 3250 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 3251 "interface '%s' due to rfkill", 3252 bss->ifname); 3253 drv->if_disabled = 1; 3254 send_rfkill_event = 1; 3255 } else { 3256 wpa_printf(MSG_ERROR, "nl80211: Could not set " 3257 "interface '%s' UP", bss->ifname); 3258 return -1; 3259 } 3260 } 3261 3262 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 3263 1, IF_OPER_DORMANT); 3264 #endif /* HOSTAPD */ 3265 3266 if (wpa_driver_nl80211_capa(drv)) 3267 return -1; 3268 3269 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 3270 bss->addr)) 3271 return -1; 3272 3273 if (send_rfkill_event) { 3274 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 3275 drv, drv->ctx); 3276 } 3277 3278 return 0; 3279 } 3280 3281 3282 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 3283 { 3284 struct nl_msg *msg; 3285 3286 msg = nlmsg_alloc(); 3287 if (!msg) 3288 return -ENOMEM; 3289 3290 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 3291 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3292 3293 return send_and_recv_msgs(drv, msg, NULL, NULL); 3294 nla_put_failure: 3295 nlmsg_free(msg); 3296 return -ENOBUFS; 3297 } 3298 3299 3300 /** 3301 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 3302 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() 3303 * 3304 * Shut down driver interface and processing of driver events. Free 3305 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 3306 */ 3307 static void wpa_driver_nl80211_deinit(void *priv) 3308 { 3309 struct i802_bss *bss = priv; 3310 struct wpa_driver_nl80211_data *drv = bss->drv; 3311 3312 if (drv->data_tx_status) 3313 eloop_unregister_read_sock(drv->eapol_tx_sock); 3314 if (drv->eapol_tx_sock >= 0) 3315 close(drv->eapol_tx_sock); 3316 3317 if (bss->nl_preq) 3318 wpa_driver_nl80211_probe_req_report(bss, 0); 3319 if (bss->added_if_into_bridge) { 3320 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 3321 bss->ifname) < 0) 3322 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3323 "interface %s from bridge %s: %s", 3324 bss->ifname, bss->brname, strerror(errno)); 3325 } 3326 if (bss->added_bridge) { 3327 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 3328 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 3329 "bridge %s: %s", 3330 bss->brname, strerror(errno)); 3331 } 3332 3333 nl80211_remove_monitor_interface(drv); 3334 3335 if (is_ap_interface(drv->nlmode)) 3336 wpa_driver_nl80211_del_beacon(drv); 3337 3338 #ifdef HOSTAPD 3339 if (drv->last_freq_ht) { 3340 /* Clear HT flags from the driver */ 3341 struct hostapd_freq_params freq; 3342 os_memset(&freq, 0, sizeof(freq)); 3343 freq.freq = drv->last_freq; 3344 i802_set_freq(priv, &freq); 3345 } 3346 3347 if (drv->eapol_sock >= 0) { 3348 eloop_unregister_read_sock(drv->eapol_sock); 3349 close(drv->eapol_sock); 3350 } 3351 3352 if (drv->if_indices != drv->default_if_indices) 3353 os_free(drv->if_indices); 3354 #endif /* HOSTAPD */ 3355 3356 if (drv->disabled_11b_rates) 3357 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 3358 3359 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 3360 IF_OPER_UP); 3361 rfkill_deinit(drv->rfkill); 3362 3363 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3364 3365 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 3366 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION); 3367 nl80211_mgmt_unsubscribe(bss, "deinit"); 3368 3369 nl_cb_put(drv->nl_cb); 3370 3371 nl80211_destroy_bss(&drv->first_bss); 3372 3373 os_free(drv->filter_ssids); 3374 3375 os_free(drv->auth_ie); 3376 3377 if (drv->in_interface_list) 3378 dl_list_del(&drv->list); 3379 3380 os_free(drv); 3381 } 3382 3383 3384 /** 3385 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 3386 * @eloop_ctx: Driver private data 3387 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 3388 * 3389 * This function can be used as registered timeout when starting a scan to 3390 * generate a scan completed event if the driver does not report this. 3391 */ 3392 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 3393 { 3394 struct wpa_driver_nl80211_data *drv = eloop_ctx; 3395 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 3396 wpa_driver_nl80211_set_mode(&drv->first_bss, 3397 drv->ap_scan_as_station); 3398 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3399 } 3400 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 3401 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 3402 } 3403 3404 3405 /** 3406 * wpa_driver_nl80211_scan - Request the driver to initiate scan 3407 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3408 * @params: Scan parameters 3409 * Returns: 0 on success, -1 on failure 3410 */ 3411 static int wpa_driver_nl80211_scan(void *priv, 3412 struct wpa_driver_scan_params *params) 3413 { 3414 struct i802_bss *bss = priv; 3415 struct wpa_driver_nl80211_data *drv = bss->drv; 3416 int ret = 0, timeout; 3417 struct nl_msg *msg, *ssids, *freqs, *rates; 3418 size_t i; 3419 3420 drv->scan_for_auth = 0; 3421 3422 msg = nlmsg_alloc(); 3423 ssids = nlmsg_alloc(); 3424 freqs = nlmsg_alloc(); 3425 rates = nlmsg_alloc(); 3426 if (!msg || !ssids || !freqs || !rates) { 3427 nlmsg_free(msg); 3428 nlmsg_free(ssids); 3429 nlmsg_free(freqs); 3430 nlmsg_free(rates); 3431 return -1; 3432 } 3433 3434 os_free(drv->filter_ssids); 3435 drv->filter_ssids = params->filter_ssids; 3436 params->filter_ssids = NULL; 3437 drv->num_filter_ssids = params->num_filter_ssids; 3438 3439 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN); 3440 3441 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3442 3443 for (i = 0; i < params->num_ssids; i++) { 3444 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 3445 params->ssids[i].ssid, 3446 params->ssids[i].ssid_len); 3447 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3448 params->ssids[i].ssid); 3449 } 3450 if (params->num_ssids) 3451 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3452 3453 if (params->extra_ies) { 3454 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 3455 params->extra_ies, params->extra_ies_len); 3456 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3457 params->extra_ies); 3458 } 3459 3460 if (params->freqs) { 3461 for (i = 0; params->freqs[i]; i++) { 3462 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3463 "MHz", params->freqs[i]); 3464 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3465 } 3466 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3467 } 3468 3469 if (params->p2p_probe) { 3470 /* 3471 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 3472 * by masking out everything else apart from the OFDM rates 6, 3473 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 3474 * rates are left enabled. 3475 */ 3476 NLA_PUT(rates, NL80211_BAND_2GHZ, 8, 3477 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 3478 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates); 3479 3480 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 3481 } 3482 3483 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3484 msg = NULL; 3485 if (ret) { 3486 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 3487 "(%s)", ret, strerror(-ret)); 3488 #ifdef HOSTAPD 3489 if (is_ap_interface(drv->nlmode)) { 3490 /* 3491 * mac80211 does not allow scan requests in AP mode, so 3492 * try to do this in station mode. 3493 */ 3494 if (wpa_driver_nl80211_set_mode( 3495 bss, NL80211_IFTYPE_STATION)) 3496 goto nla_put_failure; 3497 3498 if (wpa_driver_nl80211_scan(drv, params)) { 3499 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 3500 goto nla_put_failure; 3501 } 3502 3503 /* Restore AP mode when processing scan results */ 3504 drv->ap_scan_as_station = drv->nlmode; 3505 ret = 0; 3506 } else 3507 goto nla_put_failure; 3508 #else /* HOSTAPD */ 3509 goto nla_put_failure; 3510 #endif /* HOSTAPD */ 3511 } 3512 3513 /* Not all drivers generate "scan completed" wireless event, so try to 3514 * read results after a timeout. */ 3515 timeout = 10; 3516 if (drv->scan_complete_events) { 3517 /* 3518 * The driver seems to deliver events to notify when scan is 3519 * complete, so use longer timeout to avoid race conditions 3520 * with scanning and following association request. 3521 */ 3522 timeout = 30; 3523 } 3524 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 3525 "seconds", ret, timeout); 3526 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 3527 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 3528 drv, drv->ctx); 3529 3530 nla_put_failure: 3531 nlmsg_free(ssids); 3532 nlmsg_free(msg); 3533 nlmsg_free(freqs); 3534 nlmsg_free(rates); 3535 return ret; 3536 } 3537 3538 3539 /** 3540 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 3541 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3542 * @params: Scan parameters 3543 * @interval: Interval between scan cycles in milliseconds 3544 * Returns: 0 on success, -1 on failure or if not supported 3545 */ 3546 static int wpa_driver_nl80211_sched_scan(void *priv, 3547 struct wpa_driver_scan_params *params, 3548 u32 interval) 3549 { 3550 struct i802_bss *bss = priv; 3551 struct wpa_driver_nl80211_data *drv = bss->drv; 3552 int ret = 0; 3553 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets; 3554 size_t i; 3555 3556 #ifdef ANDROID 3557 if (!drv->capa.sched_scan_supported) 3558 return android_pno_start(bss, params); 3559 #endif /* ANDROID */ 3560 3561 msg = nlmsg_alloc(); 3562 ssids = nlmsg_alloc(); 3563 freqs = nlmsg_alloc(); 3564 if (!msg || !ssids || !freqs) { 3565 nlmsg_free(msg); 3566 nlmsg_free(ssids); 3567 nlmsg_free(freqs); 3568 return -1; 3569 } 3570 3571 os_free(drv->filter_ssids); 3572 drv->filter_ssids = params->filter_ssids; 3573 params->filter_ssids = NULL; 3574 drv->num_filter_ssids = params->num_filter_ssids; 3575 3576 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN); 3577 3578 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3579 3580 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 3581 3582 if (drv->num_filter_ssids && 3583 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) { 3584 match_sets = nlmsg_alloc(); 3585 3586 for (i = 0; i < drv->num_filter_ssids; i++) { 3587 wpa_hexdump_ascii(MSG_MSGDUMP, 3588 "nl80211: Sched scan filter SSID", 3589 drv->filter_ssids[i].ssid, 3590 drv->filter_ssids[i].ssid_len); 3591 3592 match_set_ssid = nlmsg_alloc(); 3593 nla_put(match_set_ssid, 3594 NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 3595 drv->filter_ssids[i].ssid_len, 3596 drv->filter_ssids[i].ssid); 3597 3598 nla_put_nested(match_sets, i + 1, match_set_ssid); 3599 3600 nlmsg_free(match_set_ssid); 3601 } 3602 3603 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH, 3604 match_sets); 3605 nlmsg_free(match_sets); 3606 } 3607 3608 for (i = 0; i < params->num_ssids; i++) { 3609 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID", 3610 params->ssids[i].ssid, 3611 params->ssids[i].ssid_len); 3612 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 3613 params->ssids[i].ssid); 3614 } 3615 if (params->num_ssids) 3616 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 3617 3618 if (params->extra_ies) { 3619 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs", 3620 params->extra_ies, params->extra_ies_len); 3621 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 3622 params->extra_ies); 3623 } 3624 3625 if (params->freqs) { 3626 for (i = 0; params->freqs[i]; i++) { 3627 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 3628 "MHz", params->freqs[i]); 3629 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 3630 } 3631 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 3632 } 3633 3634 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3635 3636 /* TODO: if we get an error here, we should fall back to normal scan */ 3637 3638 msg = NULL; 3639 if (ret) { 3640 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 3641 "ret=%d (%s)", ret, strerror(-ret)); 3642 goto nla_put_failure; 3643 } 3644 3645 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 3646 "scan interval %d msec", ret, interval); 3647 3648 nla_put_failure: 3649 nlmsg_free(ssids); 3650 nlmsg_free(msg); 3651 nlmsg_free(freqs); 3652 return ret; 3653 } 3654 3655 3656 /** 3657 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 3658 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 3659 * Returns: 0 on success, -1 on failure or if not supported 3660 */ 3661 static int wpa_driver_nl80211_stop_sched_scan(void *priv) 3662 { 3663 struct i802_bss *bss = priv; 3664 struct wpa_driver_nl80211_data *drv = bss->drv; 3665 int ret = 0; 3666 struct nl_msg *msg; 3667 3668 #ifdef ANDROID 3669 if (!drv->capa.sched_scan_supported) 3670 return android_pno_stop(bss); 3671 #endif /* ANDROID */ 3672 3673 msg = nlmsg_alloc(); 3674 if (!msg) 3675 return -1; 3676 3677 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 3678 3679 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3680 3681 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3682 msg = NULL; 3683 if (ret) { 3684 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 3685 "ret=%d (%s)", ret, strerror(-ret)); 3686 goto nla_put_failure; 3687 } 3688 3689 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 3690 3691 nla_put_failure: 3692 nlmsg_free(msg); 3693 return ret; 3694 } 3695 3696 3697 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 3698 { 3699 const u8 *end, *pos; 3700 3701 if (ies == NULL) 3702 return NULL; 3703 3704 pos = ies; 3705 end = ies + ies_len; 3706 3707 while (pos + 1 < end) { 3708 if (pos + 2 + pos[1] > end) 3709 break; 3710 if (pos[0] == ie) 3711 return pos; 3712 pos += 2 + pos[1]; 3713 } 3714 3715 return NULL; 3716 } 3717 3718 3719 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 3720 const u8 *ie, size_t ie_len) 3721 { 3722 const u8 *ssid; 3723 size_t i; 3724 3725 if (drv->filter_ssids == NULL) 3726 return 0; 3727 3728 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 3729 if (ssid == NULL) 3730 return 1; 3731 3732 for (i = 0; i < drv->num_filter_ssids; i++) { 3733 if (ssid[1] == drv->filter_ssids[i].ssid_len && 3734 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 3735 0) 3736 return 0; 3737 } 3738 3739 return 1; 3740 } 3741 3742 3743 static int bss_info_handler(struct nl_msg *msg, void *arg) 3744 { 3745 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3746 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3747 struct nlattr *bss[NL80211_BSS_MAX + 1]; 3748 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 3749 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 3750 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 3751 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 3752 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 3753 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 3754 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 3755 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 3756 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 3757 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 3758 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 3759 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 3760 }; 3761 struct nl80211_bss_info_arg *_arg = arg; 3762 struct wpa_scan_results *res = _arg->res; 3763 struct wpa_scan_res **tmp; 3764 struct wpa_scan_res *r; 3765 const u8 *ie, *beacon_ie; 3766 size_t ie_len, beacon_ie_len; 3767 u8 *pos; 3768 size_t i; 3769 3770 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3771 genlmsg_attrlen(gnlh, 0), NULL); 3772 if (!tb[NL80211_ATTR_BSS]) 3773 return NL_SKIP; 3774 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 3775 bss_policy)) 3776 return NL_SKIP; 3777 if (bss[NL80211_BSS_STATUS]) { 3778 enum nl80211_bss_status status; 3779 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3780 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3781 bss[NL80211_BSS_FREQUENCY]) { 3782 _arg->assoc_freq = 3783 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3784 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 3785 _arg->assoc_freq); 3786 } 3787 if (status == NL80211_BSS_STATUS_ASSOCIATED && 3788 bss[NL80211_BSS_BSSID]) { 3789 os_memcpy(_arg->assoc_bssid, 3790 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 3791 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 3792 MACSTR, MAC2STR(_arg->assoc_bssid)); 3793 } 3794 } 3795 if (!res) 3796 return NL_SKIP; 3797 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 3798 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3799 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 3800 } else { 3801 ie = NULL; 3802 ie_len = 0; 3803 } 3804 if (bss[NL80211_BSS_BEACON_IES]) { 3805 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 3806 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 3807 } else { 3808 beacon_ie = NULL; 3809 beacon_ie_len = 0; 3810 } 3811 3812 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 3813 ie ? ie_len : beacon_ie_len)) 3814 return NL_SKIP; 3815 3816 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 3817 if (r == NULL) 3818 return NL_SKIP; 3819 if (bss[NL80211_BSS_BSSID]) 3820 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 3821 ETH_ALEN); 3822 if (bss[NL80211_BSS_FREQUENCY]) 3823 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 3824 if (bss[NL80211_BSS_BEACON_INTERVAL]) 3825 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 3826 if (bss[NL80211_BSS_CAPABILITY]) 3827 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 3828 r->flags |= WPA_SCAN_NOISE_INVALID; 3829 if (bss[NL80211_BSS_SIGNAL_MBM]) { 3830 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 3831 r->level /= 100; /* mBm to dBm */ 3832 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 3833 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 3834 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 3835 r->flags |= WPA_SCAN_QUAL_INVALID; 3836 } else 3837 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 3838 if (bss[NL80211_BSS_TSF]) 3839 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 3840 if (bss[NL80211_BSS_SEEN_MS_AGO]) 3841 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 3842 r->ie_len = ie_len; 3843 pos = (u8 *) (r + 1); 3844 if (ie) { 3845 os_memcpy(pos, ie, ie_len); 3846 pos += ie_len; 3847 } 3848 r->beacon_ie_len = beacon_ie_len; 3849 if (beacon_ie) 3850 os_memcpy(pos, beacon_ie, beacon_ie_len); 3851 3852 if (bss[NL80211_BSS_STATUS]) { 3853 enum nl80211_bss_status status; 3854 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 3855 switch (status) { 3856 case NL80211_BSS_STATUS_AUTHENTICATED: 3857 r->flags |= WPA_SCAN_AUTHENTICATED; 3858 break; 3859 case NL80211_BSS_STATUS_ASSOCIATED: 3860 r->flags |= WPA_SCAN_ASSOCIATED; 3861 break; 3862 default: 3863 break; 3864 } 3865 } 3866 3867 /* 3868 * cfg80211 maintains separate BSS table entries for APs if the same 3869 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 3870 * not use frequency as a separate key in the BSS table, so filter out 3871 * duplicated entries. Prefer associated BSS entry in such a case in 3872 * order to get the correct frequency into the BSS table. 3873 */ 3874 for (i = 0; i < res->num; i++) { 3875 const u8 *s1, *s2; 3876 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 3877 continue; 3878 3879 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 3880 res->res[i]->ie_len, WLAN_EID_SSID); 3881 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 3882 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 3883 os_memcmp(s1, s2, 2 + s1[1]) != 0) 3884 continue; 3885 3886 /* Same BSSID,SSID was already included in scan results */ 3887 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 3888 "for " MACSTR, MAC2STR(r->bssid)); 3889 3890 if ((r->flags & WPA_SCAN_ASSOCIATED) && 3891 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 3892 os_free(res->res[i]); 3893 res->res[i] = r; 3894 } else 3895 os_free(r); 3896 return NL_SKIP; 3897 } 3898 3899 tmp = os_realloc(res->res, 3900 (res->num + 1) * sizeof(struct wpa_scan_res *)); 3901 if (tmp == NULL) { 3902 os_free(r); 3903 return NL_SKIP; 3904 } 3905 tmp[res->num++] = r; 3906 res->res = tmp; 3907 3908 return NL_SKIP; 3909 } 3910 3911 3912 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 3913 const u8 *addr) 3914 { 3915 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 3916 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 3917 "mismatch (" MACSTR ")", MAC2STR(addr)); 3918 wpa_driver_nl80211_mlme(drv, addr, 3919 NL80211_CMD_DEAUTHENTICATE, 3920 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 3921 } 3922 } 3923 3924 3925 static void wpa_driver_nl80211_check_bss_status( 3926 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 3927 { 3928 size_t i; 3929 3930 for (i = 0; i < res->num; i++) { 3931 struct wpa_scan_res *r = res->res[i]; 3932 if (r->flags & WPA_SCAN_AUTHENTICATED) { 3933 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 3934 "indicates BSS status with " MACSTR 3935 " as authenticated", 3936 MAC2STR(r->bssid)); 3937 if (is_sta_interface(drv->nlmode) && 3938 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 3939 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 3940 0) { 3941 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 3942 " in local state (auth=" MACSTR 3943 " assoc=" MACSTR ")", 3944 MAC2STR(drv->auth_bssid), 3945 MAC2STR(drv->bssid)); 3946 clear_state_mismatch(drv, r->bssid); 3947 } 3948 } 3949 3950 if (r->flags & WPA_SCAN_ASSOCIATED) { 3951 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 3952 "indicate BSS status with " MACSTR 3953 " as associated", 3954 MAC2STR(r->bssid)); 3955 if (is_sta_interface(drv->nlmode) && 3956 !drv->associated) { 3957 wpa_printf(MSG_DEBUG, "nl80211: Local state " 3958 "(not associated) does not match " 3959 "with BSS state"); 3960 clear_state_mismatch(drv, r->bssid); 3961 } else if (is_sta_interface(drv->nlmode) && 3962 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 3963 0) { 3964 wpa_printf(MSG_DEBUG, "nl80211: Local state " 3965 "(associated with " MACSTR ") does " 3966 "not match with BSS state", 3967 MAC2STR(drv->bssid)); 3968 clear_state_mismatch(drv, r->bssid); 3969 clear_state_mismatch(drv, drv->bssid); 3970 } 3971 } 3972 } 3973 } 3974 3975 3976 static struct wpa_scan_results * 3977 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 3978 { 3979 struct nl_msg *msg; 3980 struct wpa_scan_results *res; 3981 int ret; 3982 struct nl80211_bss_info_arg arg; 3983 3984 res = os_zalloc(sizeof(*res)); 3985 if (res == NULL) 3986 return NULL; 3987 msg = nlmsg_alloc(); 3988 if (!msg) 3989 goto nla_put_failure; 3990 3991 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 3992 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3993 3994 arg.drv = drv; 3995 arg.res = res; 3996 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 3997 msg = NULL; 3998 if (ret == 0) { 3999 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu " 4000 "BSSes)", (unsigned long) res->num); 4001 nl80211_get_noise_for_scan_results(drv, res); 4002 return res; 4003 } 4004 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 4005 "(%s)", ret, strerror(-ret)); 4006 nla_put_failure: 4007 nlmsg_free(msg); 4008 wpa_scan_results_free(res); 4009 return NULL; 4010 } 4011 4012 4013 /** 4014 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 4015 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 4016 * Returns: Scan results on success, -1 on failure 4017 */ 4018 static struct wpa_scan_results * 4019 wpa_driver_nl80211_get_scan_results(void *priv) 4020 { 4021 struct i802_bss *bss = priv; 4022 struct wpa_driver_nl80211_data *drv = bss->drv; 4023 struct wpa_scan_results *res; 4024 4025 res = nl80211_get_scan_results(drv); 4026 if (res) 4027 wpa_driver_nl80211_check_bss_status(drv, res); 4028 return res; 4029 } 4030 4031 4032 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 4033 { 4034 struct wpa_scan_results *res; 4035 size_t i; 4036 4037 res = nl80211_get_scan_results(drv); 4038 if (res == NULL) { 4039 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 4040 return; 4041 } 4042 4043 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 4044 for (i = 0; i < res->num; i++) { 4045 struct wpa_scan_res *r = res->res[i]; 4046 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 4047 (int) i, (int) res->num, MAC2STR(r->bssid), 4048 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 4049 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 4050 } 4051 4052 wpa_scan_results_free(res); 4053 } 4054 4055 4056 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, 4057 enum wpa_alg alg, const u8 *addr, 4058 int key_idx, int set_tx, 4059 const u8 *seq, size_t seq_len, 4060 const u8 *key, size_t key_len) 4061 { 4062 struct i802_bss *bss = priv; 4063 struct wpa_driver_nl80211_data *drv = bss->drv; 4064 int ifindex = if_nametoindex(ifname); 4065 struct nl_msg *msg; 4066 int ret; 4067 4068 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 4069 "set_tx=%d seq_len=%lu key_len=%lu", 4070 __func__, ifindex, alg, addr, key_idx, set_tx, 4071 (unsigned long) seq_len, (unsigned long) key_len); 4072 #ifdef CONFIG_TDLS 4073 if (key_idx == -1) 4074 key_idx = 0; 4075 #endif /* CONFIG_TDLS */ 4076 4077 msg = nlmsg_alloc(); 4078 if (!msg) 4079 return -ENOMEM; 4080 4081 if (alg == WPA_ALG_NONE) { 4082 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY); 4083 } else { 4084 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY); 4085 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 4086 switch (alg) { 4087 case WPA_ALG_WEP: 4088 if (key_len == 5) 4089 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4090 WLAN_CIPHER_SUITE_WEP40); 4091 else 4092 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4093 WLAN_CIPHER_SUITE_WEP104); 4094 break; 4095 case WPA_ALG_TKIP: 4096 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4097 WLAN_CIPHER_SUITE_TKIP); 4098 break; 4099 case WPA_ALG_CCMP: 4100 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4101 WLAN_CIPHER_SUITE_CCMP); 4102 break; 4103 case WPA_ALG_IGTK: 4104 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 4105 WLAN_CIPHER_SUITE_AES_CMAC); 4106 break; 4107 default: 4108 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4109 "algorithm %d", __func__, alg); 4110 nlmsg_free(msg); 4111 return -1; 4112 } 4113 } 4114 4115 if (seq && seq_len) 4116 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 4117 4118 if (addr && !is_broadcast_ether_addr(addr)) { 4119 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 4120 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4121 4122 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 4123 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 4124 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 4125 NL80211_KEYTYPE_GROUP); 4126 } 4127 } else if (addr && is_broadcast_ether_addr(addr)) { 4128 struct nl_msg *types; 4129 int err; 4130 wpa_printf(MSG_DEBUG, " broadcast key"); 4131 types = nlmsg_alloc(); 4132 if (!types) 4133 goto nla_put_failure; 4134 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4135 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4136 types); 4137 nlmsg_free(types); 4138 if (err) 4139 goto nla_put_failure; 4140 } 4141 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4142 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4143 4144 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4145 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 4146 ret = 0; 4147 if (ret) 4148 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 4149 ret, strerror(-ret)); 4150 4151 /* 4152 * If we failed or don't need to set the default TX key (below), 4153 * we're done here. 4154 */ 4155 if (ret || !set_tx || alg == WPA_ALG_NONE) 4156 return ret; 4157 if (is_ap_interface(drv->nlmode) && addr && 4158 !is_broadcast_ether_addr(addr)) 4159 return ret; 4160 4161 msg = nlmsg_alloc(); 4162 if (!msg) 4163 return -ENOMEM; 4164 4165 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY); 4166 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 4167 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 4168 if (alg == WPA_ALG_IGTK) 4169 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 4170 else 4171 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 4172 if (addr && is_broadcast_ether_addr(addr)) { 4173 struct nl_msg *types; 4174 int err; 4175 types = nlmsg_alloc(); 4176 if (!types) 4177 goto nla_put_failure; 4178 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 4179 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4180 types); 4181 nlmsg_free(types); 4182 if (err) 4183 goto nla_put_failure; 4184 } else if (addr) { 4185 struct nl_msg *types; 4186 int err; 4187 types = nlmsg_alloc(); 4188 if (!types) 4189 goto nla_put_failure; 4190 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 4191 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 4192 types); 4193 nlmsg_free(types); 4194 if (err) 4195 goto nla_put_failure; 4196 } 4197 4198 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4199 if (ret == -ENOENT) 4200 ret = 0; 4201 if (ret) 4202 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 4203 "err=%d %s)", ret, strerror(-ret)); 4204 return ret; 4205 4206 nla_put_failure: 4207 nlmsg_free(msg); 4208 return -ENOBUFS; 4209 } 4210 4211 4212 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 4213 int key_idx, int defkey, 4214 const u8 *seq, size_t seq_len, 4215 const u8 *key, size_t key_len) 4216 { 4217 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 4218 if (!key_attr) 4219 return -1; 4220 4221 if (defkey && alg == WPA_ALG_IGTK) 4222 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 4223 else if (defkey) 4224 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4225 4226 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 4227 4228 switch (alg) { 4229 case WPA_ALG_WEP: 4230 if (key_len == 5) 4231 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4232 WLAN_CIPHER_SUITE_WEP40); 4233 else 4234 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4235 WLAN_CIPHER_SUITE_WEP104); 4236 break; 4237 case WPA_ALG_TKIP: 4238 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 4239 break; 4240 case WPA_ALG_CCMP: 4241 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 4242 break; 4243 case WPA_ALG_IGTK: 4244 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4245 WLAN_CIPHER_SUITE_AES_CMAC); 4246 break; 4247 default: 4248 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 4249 "algorithm %d", __func__, alg); 4250 return -1; 4251 } 4252 4253 if (seq && seq_len) 4254 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 4255 4256 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 4257 4258 nla_nest_end(msg, key_attr); 4259 4260 return 0; 4261 nla_put_failure: 4262 return -1; 4263 } 4264 4265 4266 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 4267 struct nl_msg *msg) 4268 { 4269 int i, privacy = 0; 4270 struct nlattr *nl_keys, *nl_key; 4271 4272 for (i = 0; i < 4; i++) { 4273 if (!params->wep_key[i]) 4274 continue; 4275 privacy = 1; 4276 break; 4277 } 4278 if (params->wps == WPS_MODE_PRIVACY) 4279 privacy = 1; 4280 if (params->pairwise_suite && 4281 params->pairwise_suite != WPA_CIPHER_NONE) 4282 privacy = 1; 4283 4284 if (!privacy) 4285 return 0; 4286 4287 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 4288 4289 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 4290 if (!nl_keys) 4291 goto nla_put_failure; 4292 4293 for (i = 0; i < 4; i++) { 4294 if (!params->wep_key[i]) 4295 continue; 4296 4297 nl_key = nla_nest_start(msg, i); 4298 if (!nl_key) 4299 goto nla_put_failure; 4300 4301 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 4302 params->wep_key[i]); 4303 if (params->wep_key_len[i] == 5) 4304 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4305 WLAN_CIPHER_SUITE_WEP40); 4306 else 4307 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 4308 WLAN_CIPHER_SUITE_WEP104); 4309 4310 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 4311 4312 if (i == params->wep_tx_keyidx) 4313 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 4314 4315 nla_nest_end(msg, nl_key); 4316 } 4317 nla_nest_end(msg, nl_keys); 4318 4319 return 0; 4320 4321 nla_put_failure: 4322 return -ENOBUFS; 4323 } 4324 4325 4326 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 4327 const u8 *addr, int cmd, u16 reason_code, 4328 int local_state_change) 4329 { 4330 int ret = -1; 4331 struct nl_msg *msg; 4332 4333 msg = nlmsg_alloc(); 4334 if (!msg) 4335 return -1; 4336 4337 nl80211_cmd(drv, msg, 0, cmd); 4338 4339 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4340 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 4341 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4342 if (local_state_change) 4343 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4344 4345 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4346 msg = NULL; 4347 if (ret) { 4348 wpa_dbg(drv->ctx, MSG_DEBUG, 4349 "nl80211: MLME command failed: reason=%u ret=%d (%s)", 4350 reason_code, ret, strerror(-ret)); 4351 goto nla_put_failure; 4352 } 4353 ret = 0; 4354 4355 nla_put_failure: 4356 nlmsg_free(msg); 4357 return ret; 4358 } 4359 4360 4361 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 4362 const u8 *addr, int reason_code) 4363 { 4364 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4365 __func__, MAC2STR(addr), reason_code); 4366 drv->associated = 0; 4367 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, 4368 reason_code, 0); 4369 } 4370 4371 4372 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, 4373 int reason_code) 4374 { 4375 struct i802_bss *bss = priv; 4376 struct wpa_driver_nl80211_data *drv = bss->drv; 4377 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4378 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4379 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 4380 __func__, MAC2STR(addr), reason_code); 4381 drv->associated = 0; 4382 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 4383 return nl80211_leave_ibss(drv); 4384 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 4385 reason_code, 0); 4386 } 4387 4388 4389 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, 4390 int reason_code) 4391 { 4392 struct i802_bss *bss = priv; 4393 struct wpa_driver_nl80211_data *drv = bss->drv; 4394 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 4395 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 4396 wpa_printf(MSG_DEBUG, "%s", __func__); 4397 drv->associated = 0; 4398 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, 4399 reason_code, 0); 4400 } 4401 4402 4403 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv, 4404 struct wpa_driver_auth_params *params) 4405 { 4406 int i; 4407 4408 drv->auth_freq = params->freq; 4409 drv->auth_alg = params->auth_alg; 4410 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx; 4411 drv->auth_local_state_change = params->local_state_change; 4412 drv->auth_p2p = params->p2p; 4413 4414 if (params->bssid) 4415 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN); 4416 else 4417 os_memset(drv->auth_bssid_, 0, ETH_ALEN); 4418 4419 if (params->ssid) { 4420 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len); 4421 drv->auth_ssid_len = params->ssid_len; 4422 } else 4423 drv->auth_ssid_len = 0; 4424 4425 4426 os_free(drv->auth_ie); 4427 drv->auth_ie = NULL; 4428 drv->auth_ie_len = 0; 4429 if (params->ie) { 4430 drv->auth_ie = os_malloc(params->ie_len); 4431 if (drv->auth_ie) { 4432 os_memcpy(drv->auth_ie, params->ie, params->ie_len); 4433 drv->auth_ie_len = params->ie_len; 4434 } 4435 } 4436 4437 for (i = 0; i < 4; i++) { 4438 if (params->wep_key[i] && params->wep_key_len[i] && 4439 params->wep_key_len[i] <= 16) { 4440 os_memcpy(drv->auth_wep_key[i], params->wep_key[i], 4441 params->wep_key_len[i]); 4442 drv->auth_wep_key_len[i] = params->wep_key_len[i]; 4443 } else 4444 drv->auth_wep_key_len[i] = 0; 4445 } 4446 } 4447 4448 4449 static int wpa_driver_nl80211_authenticate( 4450 void *priv, struct wpa_driver_auth_params *params) 4451 { 4452 struct i802_bss *bss = priv; 4453 struct wpa_driver_nl80211_data *drv = bss->drv; 4454 int ret = -1, i; 4455 struct nl_msg *msg; 4456 enum nl80211_auth_type type; 4457 enum nl80211_iftype nlmode; 4458 int count = 0; 4459 int is_retry; 4460 4461 is_retry = drv->retry_auth; 4462 drv->retry_auth = 0; 4463 4464 drv->associated = 0; 4465 os_memset(drv->auth_bssid, 0, ETH_ALEN); 4466 /* FIX: IBSS mode */ 4467 nlmode = params->p2p ? 4468 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 4469 if (drv->nlmode != nlmode && 4470 wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 4471 return -1; 4472 4473 retry: 4474 msg = nlmsg_alloc(); 4475 if (!msg) 4476 return -1; 4477 4478 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 4479 drv->ifindex); 4480 4481 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE); 4482 4483 for (i = 0; i < 4; i++) { 4484 if (!params->wep_key[i]) 4485 continue; 4486 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, 4487 NULL, i, 4488 i == params->wep_tx_keyidx, NULL, 0, 4489 params->wep_key[i], 4490 params->wep_key_len[i]); 4491 if (params->wep_tx_keyidx != i) 4492 continue; 4493 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 4494 params->wep_key[i], params->wep_key_len[i])) { 4495 nlmsg_free(msg); 4496 return -1; 4497 } 4498 } 4499 4500 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4501 if (params->bssid) { 4502 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4503 MAC2STR(params->bssid)); 4504 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4505 } 4506 if (params->freq) { 4507 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4508 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4509 } 4510 if (params->ssid) { 4511 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4512 params->ssid, params->ssid_len); 4513 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4514 params->ssid); 4515 } 4516 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 4517 if (params->ie) 4518 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 4519 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4520 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4521 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4522 type = NL80211_AUTHTYPE_SHARED_KEY; 4523 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4524 type = NL80211_AUTHTYPE_NETWORK_EAP; 4525 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4526 type = NL80211_AUTHTYPE_FT; 4527 else 4528 goto nla_put_failure; 4529 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4530 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4531 if (params->local_state_change) { 4532 wpa_printf(MSG_DEBUG, " * Local state change only"); 4533 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 4534 } 4535 4536 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4537 msg = NULL; 4538 if (ret) { 4539 wpa_dbg(drv->ctx, MSG_DEBUG, 4540 "nl80211: MLME command failed (auth): ret=%d (%s)", 4541 ret, strerror(-ret)); 4542 count++; 4543 if (ret == -EALREADY && count == 1 && params->bssid && 4544 !params->local_state_change) { 4545 /* 4546 * mac80211 does not currently accept new 4547 * authentication if we are already authenticated. As a 4548 * workaround, force deauthentication and try again. 4549 */ 4550 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 4551 "after forced deauthentication"); 4552 wpa_driver_nl80211_deauthenticate( 4553 bss, params->bssid, 4554 WLAN_REASON_PREV_AUTH_NOT_VALID); 4555 nlmsg_free(msg); 4556 goto retry; 4557 } 4558 4559 if (ret == -ENOENT && params->freq && !is_retry) { 4560 /* 4561 * cfg80211 has likely expired the BSS entry even 4562 * though it was previously available in our internal 4563 * BSS table. To recover quickly, start a single 4564 * channel scan on the specified channel. 4565 */ 4566 struct wpa_driver_scan_params scan; 4567 int freqs[2]; 4568 4569 os_memset(&scan, 0, sizeof(scan)); 4570 scan.num_ssids = 1; 4571 if (params->ssid) { 4572 scan.ssids[0].ssid = params->ssid; 4573 scan.ssids[0].ssid_len = params->ssid_len; 4574 } 4575 freqs[0] = params->freq; 4576 freqs[1] = 0; 4577 scan.freqs = freqs; 4578 wpa_printf(MSG_DEBUG, "nl80211: Trigger single " 4579 "channel scan to refresh cfg80211 BSS " 4580 "entry"); 4581 ret = wpa_driver_nl80211_scan(bss, &scan); 4582 if (ret == 0) { 4583 nl80211_copy_auth_params(drv, params); 4584 drv->scan_for_auth = 1; 4585 } 4586 } else if (is_retry) { 4587 /* 4588 * Need to indicate this with an event since the return 4589 * value from the retry is not delivered to core code. 4590 */ 4591 union wpa_event_data event; 4592 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry " 4593 "failed"); 4594 os_memset(&event, 0, sizeof(event)); 4595 os_memcpy(event.timeout_event.addr, drv->auth_bssid_, 4596 ETH_ALEN); 4597 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT, 4598 &event); 4599 } 4600 4601 goto nla_put_failure; 4602 } 4603 ret = 0; 4604 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 4605 "successfully"); 4606 4607 nla_put_failure: 4608 nlmsg_free(msg); 4609 return ret; 4610 } 4611 4612 4613 static int wpa_driver_nl80211_authenticate_retry( 4614 struct wpa_driver_nl80211_data *drv) 4615 { 4616 struct wpa_driver_auth_params params; 4617 struct i802_bss *bss = &drv->first_bss; 4618 int i; 4619 4620 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again"); 4621 4622 os_memset(¶ms, 0, sizeof(params)); 4623 params.freq = drv->auth_freq; 4624 params.auth_alg = drv->auth_alg; 4625 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx; 4626 params.local_state_change = drv->auth_local_state_change; 4627 params.p2p = drv->auth_p2p; 4628 4629 if (!is_zero_ether_addr(drv->auth_bssid_)) 4630 params.bssid = drv->auth_bssid_; 4631 4632 if (drv->auth_ssid_len) { 4633 params.ssid = drv->auth_ssid; 4634 params.ssid_len = drv->auth_ssid_len; 4635 } 4636 4637 params.ie = drv->auth_ie; 4638 params.ie_len = drv->auth_ie_len; 4639 4640 for (i = 0; i < 4; i++) { 4641 if (drv->auth_wep_key_len[i]) { 4642 params.wep_key[i] = drv->auth_wep_key[i]; 4643 params.wep_key_len[i] = drv->auth_wep_key_len[i]; 4644 } 4645 } 4646 4647 drv->retry_auth = 1; 4648 return wpa_driver_nl80211_authenticate(bss, ¶ms); 4649 } 4650 4651 4652 struct phy_info_arg { 4653 u16 *num_modes; 4654 struct hostapd_hw_modes *modes; 4655 }; 4656 4657 static int phy_info_handler(struct nl_msg *msg, void *arg) 4658 { 4659 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4660 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4661 struct phy_info_arg *phy_info = arg; 4662 4663 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 4664 4665 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 4666 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4667 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 4668 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 4669 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 4670 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 4671 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 4672 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 4673 }; 4674 4675 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 4676 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 4677 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 4678 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 4679 }; 4680 4681 struct nlattr *nl_band; 4682 struct nlattr *nl_freq; 4683 struct nlattr *nl_rate; 4684 int rem_band, rem_freq, rem_rate; 4685 struct hostapd_hw_modes *mode; 4686 int idx, mode_is_set; 4687 4688 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 4689 genlmsg_attrlen(gnlh, 0), NULL); 4690 4691 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 4692 return NL_SKIP; 4693 4694 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 4695 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode)); 4696 if (!mode) 4697 return NL_SKIP; 4698 phy_info->modes = mode; 4699 4700 mode_is_set = 0; 4701 4702 mode = &phy_info->modes[*(phy_info->num_modes)]; 4703 memset(mode, 0, sizeof(*mode)); 4704 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN; 4705 *(phy_info->num_modes) += 1; 4706 4707 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 4708 nla_len(nl_band), NULL); 4709 4710 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 4711 mode->ht_capab = nla_get_u16( 4712 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 4713 } 4714 4715 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 4716 mode->a_mpdu_params |= nla_get_u8( 4717 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 4718 0x03; 4719 } 4720 4721 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 4722 mode->a_mpdu_params |= nla_get_u8( 4723 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 4724 2; 4725 } 4726 4727 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 4728 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 4729 u8 *mcs; 4730 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 4731 os_memcpy(mode->mcs_set, mcs, 16); 4732 } 4733 4734 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4735 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4736 nla_len(nl_freq), freq_policy); 4737 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4738 continue; 4739 mode->num_channels++; 4740 } 4741 4742 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data)); 4743 if (!mode->channels) 4744 return NL_SKIP; 4745 4746 idx = 0; 4747 4748 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 4749 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 4750 nla_len(nl_freq), freq_policy); 4751 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 4752 continue; 4753 4754 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 4755 mode->channels[idx].flag = 0; 4756 4757 if (!mode_is_set) { 4758 /* crude heuristic */ 4759 if (mode->channels[idx].freq < 4000) 4760 mode->mode = HOSTAPD_MODE_IEEE80211B; 4761 else 4762 mode->mode = HOSTAPD_MODE_IEEE80211A; 4763 mode_is_set = 1; 4764 } 4765 4766 /* crude heuristic */ 4767 if (mode->channels[idx].freq < 4000) 4768 if (mode->channels[idx].freq == 2484) 4769 mode->channels[idx].chan = 14; 4770 else 4771 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; 4772 else 4773 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; 4774 4775 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4776 mode->channels[idx].flag |= 4777 HOSTAPD_CHAN_DISABLED; 4778 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 4779 mode->channels[idx].flag |= 4780 HOSTAPD_CHAN_PASSIVE_SCAN; 4781 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 4782 mode->channels[idx].flag |= 4783 HOSTAPD_CHAN_NO_IBSS; 4784 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 4785 mode->channels[idx].flag |= 4786 HOSTAPD_CHAN_RADAR; 4787 4788 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 4789 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 4790 mode->channels[idx].max_tx_power = 4791 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 4792 4793 idx++; 4794 } 4795 4796 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4797 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4798 nla_len(nl_rate), rate_policy); 4799 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4800 continue; 4801 mode->num_rates++; 4802 } 4803 4804 mode->rates = os_zalloc(mode->num_rates * sizeof(int)); 4805 if (!mode->rates) 4806 return NL_SKIP; 4807 4808 idx = 0; 4809 4810 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 4811 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 4812 nla_len(nl_rate), rate_policy); 4813 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 4814 continue; 4815 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 4816 4817 /* crude heuristic */ 4818 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 4819 mode->rates[idx] > 200) 4820 mode->mode = HOSTAPD_MODE_IEEE80211G; 4821 4822 idx++; 4823 } 4824 } 4825 4826 return NL_SKIP; 4827 } 4828 4829 static struct hostapd_hw_modes * 4830 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 4831 { 4832 u16 m; 4833 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 4834 int i, mode11g_idx = -1; 4835 4836 /* If only 802.11g mode is included, use it to construct matching 4837 * 802.11b mode data. */ 4838 4839 for (m = 0; m < *num_modes; m++) { 4840 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 4841 return modes; /* 802.11b already included */ 4842 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 4843 mode11g_idx = m; 4844 } 4845 4846 if (mode11g_idx < 0) 4847 return modes; /* 2.4 GHz band not supported at all */ 4848 4849 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes)); 4850 if (nmodes == NULL) 4851 return modes; /* Could not add 802.11b mode */ 4852 4853 mode = &nmodes[*num_modes]; 4854 os_memset(mode, 0, sizeof(*mode)); 4855 (*num_modes)++; 4856 modes = nmodes; 4857 4858 mode->mode = HOSTAPD_MODE_IEEE80211B; 4859 4860 mode11g = &modes[mode11g_idx]; 4861 mode->num_channels = mode11g->num_channels; 4862 mode->channels = os_malloc(mode11g->num_channels * 4863 sizeof(struct hostapd_channel_data)); 4864 if (mode->channels == NULL) { 4865 (*num_modes)--; 4866 return modes; /* Could not add 802.11b mode */ 4867 } 4868 os_memcpy(mode->channels, mode11g->channels, 4869 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 4870 4871 mode->num_rates = 0; 4872 mode->rates = os_malloc(4 * sizeof(int)); 4873 if (mode->rates == NULL) { 4874 os_free(mode->channels); 4875 (*num_modes)--; 4876 return modes; /* Could not add 802.11b mode */ 4877 } 4878 4879 for (i = 0; i < mode11g->num_rates; i++) { 4880 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 4881 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 4882 continue; 4883 mode->rates[mode->num_rates] = mode11g->rates[i]; 4884 mode->num_rates++; 4885 if (mode->num_rates == 4) 4886 break; 4887 } 4888 4889 if (mode->num_rates == 0) { 4890 os_free(mode->channels); 4891 os_free(mode->rates); 4892 (*num_modes)--; 4893 return modes; /* No 802.11b rates */ 4894 } 4895 4896 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 4897 "information"); 4898 4899 return modes; 4900 } 4901 4902 4903 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 4904 int end) 4905 { 4906 int c; 4907 4908 for (c = 0; c < mode->num_channels; c++) { 4909 struct hostapd_channel_data *chan = &mode->channels[c]; 4910 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 4911 chan->flag |= HOSTAPD_CHAN_HT40; 4912 } 4913 } 4914 4915 4916 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 4917 int end) 4918 { 4919 int c; 4920 4921 for (c = 0; c < mode->num_channels; c++) { 4922 struct hostapd_channel_data *chan = &mode->channels[c]; 4923 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 4924 continue; 4925 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 4926 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 4927 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 4928 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 4929 } 4930 } 4931 4932 4933 static void nl80211_reg_rule_ht40(struct nlattr *tb[], 4934 struct phy_info_arg *results) 4935 { 4936 u32 start, end, max_bw; 4937 u16 m; 4938 4939 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 4940 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 4941 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 4942 return; 4943 4944 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 4945 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 4946 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 4947 4948 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 4949 start, end, max_bw); 4950 if (max_bw < 40) 4951 return; 4952 4953 for (m = 0; m < *results->num_modes; m++) { 4954 if (!(results->modes[m].ht_capab & 4955 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 4956 continue; 4957 nl80211_set_ht40_mode(&results->modes[m], start, end); 4958 } 4959 } 4960 4961 4962 static void nl80211_reg_rule_sec(struct nlattr *tb[], 4963 struct phy_info_arg *results) 4964 { 4965 u32 start, end, max_bw; 4966 u16 m; 4967 4968 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 4969 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 4970 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 4971 return; 4972 4973 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 4974 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 4975 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 4976 4977 if (max_bw < 20) 4978 return; 4979 4980 for (m = 0; m < *results->num_modes; m++) { 4981 if (!(results->modes[m].ht_capab & 4982 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 4983 continue; 4984 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 4985 } 4986 } 4987 4988 4989 static int nl80211_get_reg(struct nl_msg *msg, void *arg) 4990 { 4991 struct phy_info_arg *results = arg; 4992 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 4993 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 4994 struct nlattr *nl_rule; 4995 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 4996 int rem_rule; 4997 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 4998 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4999 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5000 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5001 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5002 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5003 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5004 }; 5005 5006 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5007 genlmsg_attrlen(gnlh, 0), NULL); 5008 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 5009 !tb_msg[NL80211_ATTR_REG_RULES]) { 5010 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 5011 "available"); 5012 return NL_SKIP; 5013 } 5014 5015 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 5016 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 5017 5018 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5019 { 5020 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5021 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5022 nl80211_reg_rule_ht40(tb_rule, results); 5023 } 5024 5025 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 5026 { 5027 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 5028 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 5029 nl80211_reg_rule_sec(tb_rule, results); 5030 } 5031 5032 return NL_SKIP; 5033 } 5034 5035 5036 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 5037 struct phy_info_arg *results) 5038 { 5039 struct nl_msg *msg; 5040 5041 msg = nlmsg_alloc(); 5042 if (!msg) 5043 return -ENOMEM; 5044 5045 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 5046 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 5047 } 5048 5049 5050 static struct hostapd_hw_modes * 5051 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 5052 { 5053 struct i802_bss *bss = priv; 5054 struct wpa_driver_nl80211_data *drv = bss->drv; 5055 struct nl_msg *msg; 5056 struct phy_info_arg result = { 5057 .num_modes = num_modes, 5058 .modes = NULL, 5059 }; 5060 5061 *num_modes = 0; 5062 *flags = 0; 5063 5064 msg = nlmsg_alloc(); 5065 if (!msg) 5066 return NULL; 5067 5068 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 5069 5070 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5071 5072 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 5073 nl80211_set_ht40_flags(drv, &result); 5074 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 5075 } 5076 msg = NULL; 5077 nla_put_failure: 5078 nlmsg_free(msg); 5079 return NULL; 5080 } 5081 5082 5083 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv, 5084 const void *data, size_t len, 5085 int encrypt, int noack) 5086 { 5087 __u8 rtap_hdr[] = { 5088 0x00, 0x00, /* radiotap version */ 5089 0x0e, 0x00, /* radiotap length */ 5090 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 5091 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 5092 0x00, /* padding */ 5093 0x00, 0x00, /* RX and TX flags to indicate that */ 5094 0x00, 0x00, /* this is the injected frame directly */ 5095 }; 5096 struct iovec iov[2] = { 5097 { 5098 .iov_base = &rtap_hdr, 5099 .iov_len = sizeof(rtap_hdr), 5100 }, 5101 { 5102 .iov_base = (void *) data, 5103 .iov_len = len, 5104 } 5105 }; 5106 struct msghdr msg = { 5107 .msg_name = NULL, 5108 .msg_namelen = 0, 5109 .msg_iov = iov, 5110 .msg_iovlen = 2, 5111 .msg_control = NULL, 5112 .msg_controllen = 0, 5113 .msg_flags = 0, 5114 }; 5115 int res; 5116 u16 txflags = 0; 5117 5118 if (encrypt) 5119 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 5120 5121 if (drv->monitor_sock < 0) { 5122 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 5123 "for %s", __func__); 5124 return -1; 5125 } 5126 5127 if (noack) 5128 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK; 5129 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags); 5130 5131 res = sendmsg(drv->monitor_sock, &msg, 0); 5132 if (res < 0) { 5133 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 5134 return -1; 5135 } 5136 return 0; 5137 } 5138 5139 5140 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss, 5141 const void *data, size_t len, 5142 int encrypt, int noack, 5143 unsigned int freq, int no_cck, 5144 int offchanok, unsigned int wait_time) 5145 { 5146 struct wpa_driver_nl80211_data *drv = bss->drv; 5147 u64 cookie; 5148 5149 if (freq == 0) 5150 freq = bss->freq; 5151 5152 if (drv->use_monitor) 5153 return wpa_driver_nl80211_send_mntr(drv, data, len, 5154 encrypt, noack); 5155 5156 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len, 5157 &cookie, no_cck, noack, offchanok); 5158 } 5159 5160 5161 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss, 5162 const u8 *data, 5163 size_t data_len, int noack, 5164 unsigned int freq, int no_cck, 5165 int offchanok, 5166 unsigned int wait_time) 5167 { 5168 struct wpa_driver_nl80211_data *drv = bss->drv; 5169 struct ieee80211_mgmt *mgmt; 5170 int encrypt = 1; 5171 u16 fc; 5172 5173 mgmt = (struct ieee80211_mgmt *) data; 5174 fc = le_to_host16(mgmt->frame_control); 5175 5176 if (is_sta_interface(drv->nlmode) && 5177 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5178 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 5179 /* 5180 * The use of last_mgmt_freq is a bit of a hack, 5181 * but it works due to the single-threaded nature 5182 * of wpa_supplicant. 5183 */ 5184 if (freq == 0) 5185 freq = drv->last_mgmt_freq; 5186 return nl80211_send_frame_cmd(bss, freq, 0, 5187 data, data_len, NULL, 1, noack, 5188 1); 5189 } 5190 5191 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) { 5192 if (freq == 0) 5193 freq = bss->freq; 5194 return nl80211_send_frame_cmd(bss, freq, 0, 5195 data, data_len, 5196 &drv->send_action_cookie, 5197 no_cck, noack, offchanok); 5198 } 5199 5200 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 5201 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 5202 /* 5203 * Only one of the authentication frame types is encrypted. 5204 * In order for static WEP encryption to work properly (i.e., 5205 * to not encrypt the frame), we need to tell mac80211 about 5206 * the frames that must not be encrypted. 5207 */ 5208 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 5209 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 5210 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 5211 encrypt = 0; 5212 } 5213 5214 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 5215 noack, freq, no_cck, offchanok, 5216 wait_time); 5217 } 5218 5219 5220 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, 5221 size_t data_len, int noack) 5222 { 5223 struct i802_bss *bss = priv; 5224 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack, 5225 0, 0, 0, 0); 5226 } 5227 5228 5229 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble, 5230 int slot, int ht_opmode, int ap_isolate, 5231 int *basic_rates) 5232 { 5233 struct wpa_driver_nl80211_data *drv = bss->drv; 5234 struct nl_msg *msg; 5235 5236 msg = nlmsg_alloc(); 5237 if (!msg) 5238 return -ENOMEM; 5239 5240 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS); 5241 5242 if (cts >= 0) 5243 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5244 if (preamble >= 0) 5245 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5246 if (slot >= 0) 5247 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5248 if (ht_opmode >= 0) 5249 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5250 if (ap_isolate >= 0) 5251 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate); 5252 5253 if (basic_rates) { 5254 u8 rates[NL80211_MAX_SUPP_RATES]; 5255 u8 rates_len = 0; 5256 int i; 5257 5258 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; 5259 i++) 5260 rates[rates_len++] = basic_rates[i] / 5; 5261 5262 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5263 } 5264 5265 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5266 5267 return send_and_recv_msgs(drv, msg, NULL, NULL); 5268 nla_put_failure: 5269 nlmsg_free(msg); 5270 return -ENOBUFS; 5271 } 5272 5273 5274 static int wpa_driver_nl80211_set_ap(void *priv, 5275 struct wpa_driver_ap_params *params) 5276 { 5277 struct i802_bss *bss = priv; 5278 struct wpa_driver_nl80211_data *drv = bss->drv; 5279 struct nl_msg *msg; 5280 u8 cmd = NL80211_CMD_NEW_BEACON; 5281 int ret; 5282 int beacon_set; 5283 int ifindex = if_nametoindex(bss->ifname); 5284 int num_suites; 5285 u32 suites[10]; 5286 u32 ver; 5287 5288 beacon_set = bss->beacon_set; 5289 5290 msg = nlmsg_alloc(); 5291 if (!msg) 5292 return -ENOMEM; 5293 5294 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 5295 beacon_set); 5296 if (beacon_set) 5297 cmd = NL80211_CMD_SET_BEACON; 5298 5299 nl80211_cmd(drv, msg, 0, cmd); 5300 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head); 5301 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail); 5302 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5303 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int); 5304 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period); 5305 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 5306 params->ssid); 5307 if (params->proberesp && params->proberesp_len) 5308 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len, 5309 params->proberesp); 5310 switch (params->hide_ssid) { 5311 case NO_SSID_HIDING: 5312 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5313 NL80211_HIDDEN_SSID_NOT_IN_USE); 5314 break; 5315 case HIDDEN_SSID_ZERO_LEN: 5316 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5317 NL80211_HIDDEN_SSID_ZERO_LEN); 5318 break; 5319 case HIDDEN_SSID_ZERO_CONTENTS: 5320 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID, 5321 NL80211_HIDDEN_SSID_ZERO_CONTENTS); 5322 break; 5323 } 5324 if (params->privacy) 5325 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 5326 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) == 5327 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) { 5328 /* Leave out the attribute */ 5329 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) 5330 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5331 NL80211_AUTHTYPE_SHARED_KEY); 5332 else 5333 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, 5334 NL80211_AUTHTYPE_OPEN_SYSTEM); 5335 5336 ver = 0; 5337 if (params->wpa_version & WPA_PROTO_WPA) 5338 ver |= NL80211_WPA_VERSION_1; 5339 if (params->wpa_version & WPA_PROTO_RSN) 5340 ver |= NL80211_WPA_VERSION_2; 5341 if (ver) 5342 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 5343 5344 num_suites = 0; 5345 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X) 5346 suites[num_suites++] = WLAN_AKM_SUITE_8021X; 5347 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK) 5348 suites[num_suites++] = WLAN_AKM_SUITE_PSK; 5349 if (num_suites) { 5350 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES, 5351 num_suites * sizeof(u32), suites); 5352 } 5353 5354 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X && 5355 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) 5356 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT); 5357 5358 num_suites = 0; 5359 if (params->pairwise_ciphers & WPA_CIPHER_CCMP) 5360 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP; 5361 if (params->pairwise_ciphers & WPA_CIPHER_TKIP) 5362 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP; 5363 if (params->pairwise_ciphers & WPA_CIPHER_WEP104) 5364 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104; 5365 if (params->pairwise_ciphers & WPA_CIPHER_WEP40) 5366 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40; 5367 if (num_suites) { 5368 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, 5369 num_suites * sizeof(u32), suites); 5370 } 5371 5372 switch (params->group_cipher) { 5373 case WPA_CIPHER_CCMP: 5374 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5375 WLAN_CIPHER_SUITE_CCMP); 5376 break; 5377 case WPA_CIPHER_TKIP: 5378 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5379 WLAN_CIPHER_SUITE_TKIP); 5380 break; 5381 case WPA_CIPHER_WEP104: 5382 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5383 WLAN_CIPHER_SUITE_WEP104); 5384 break; 5385 case WPA_CIPHER_WEP40: 5386 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, 5387 WLAN_CIPHER_SUITE_WEP40); 5388 break; 5389 } 5390 5391 if (params->beacon_ies) { 5392 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies), 5393 wpabuf_head(params->beacon_ies)); 5394 } 5395 if (params->proberesp_ies) { 5396 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP, 5397 wpabuf_len(params->proberesp_ies), 5398 wpabuf_head(params->proberesp_ies)); 5399 } 5400 if (params->assocresp_ies) { 5401 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP, 5402 wpabuf_len(params->assocresp_ies), 5403 wpabuf_head(params->assocresp_ies)); 5404 } 5405 5406 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5407 if (ret) { 5408 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 5409 ret, strerror(-ret)); 5410 } else { 5411 bss->beacon_set = 1; 5412 nl80211_set_bss(bss, params->cts_protect, params->preamble, 5413 params->short_slot_time, params->ht_opmode, 5414 params->isolate, params->basic_rates); 5415 } 5416 5417 return ret; 5418 nla_put_failure: 5419 nlmsg_free(msg); 5420 return -ENOBUFS; 5421 } 5422 5423 5424 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss, 5425 int freq, int ht_enabled, 5426 int sec_channel_offset) 5427 { 5428 struct wpa_driver_nl80211_data *drv = bss->drv; 5429 struct nl_msg *msg; 5430 int ret; 5431 5432 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d " 5433 "sec_channel_offset=%d)", 5434 freq, ht_enabled, sec_channel_offset); 5435 msg = nlmsg_alloc(); 5436 if (!msg) 5437 return -1; 5438 5439 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 5440 5441 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5442 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 5443 if (ht_enabled) { 5444 switch (sec_channel_offset) { 5445 case -1: 5446 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5447 NL80211_CHAN_HT40MINUS); 5448 break; 5449 case 1: 5450 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5451 NL80211_CHAN_HT40PLUS); 5452 break; 5453 default: 5454 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 5455 NL80211_CHAN_HT20); 5456 break; 5457 } 5458 } 5459 5460 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5461 msg = NULL; 5462 if (ret == 0) { 5463 bss->freq = freq; 5464 return 0; 5465 } 5466 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 5467 "%d (%s)", freq, ret, strerror(-ret)); 5468 nla_put_failure: 5469 nlmsg_free(msg); 5470 return -1; 5471 } 5472 5473 5474 static u32 sta_flags_nl80211(int flags) 5475 { 5476 u32 f = 0; 5477 5478 if (flags & WPA_STA_AUTHORIZED) 5479 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 5480 if (flags & WPA_STA_WMM) 5481 f |= BIT(NL80211_STA_FLAG_WME); 5482 if (flags & WPA_STA_SHORT_PREAMBLE) 5483 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 5484 if (flags & WPA_STA_MFP) 5485 f |= BIT(NL80211_STA_FLAG_MFP); 5486 if (flags & WPA_STA_TDLS_PEER) 5487 f |= BIT(NL80211_STA_FLAG_TDLS_PEER); 5488 5489 return f; 5490 } 5491 5492 5493 static int wpa_driver_nl80211_sta_add(void *priv, 5494 struct hostapd_sta_add_params *params) 5495 { 5496 struct i802_bss *bss = priv; 5497 struct wpa_driver_nl80211_data *drv = bss->drv; 5498 struct nl_msg *msg, *wme = NULL; 5499 struct nl80211_sta_flag_update upd; 5500 int ret = -ENOBUFS; 5501 5502 if ((params->flags & WPA_STA_TDLS_PEER) && 5503 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 5504 return -EOPNOTSUPP; 5505 5506 msg = nlmsg_alloc(); 5507 if (!msg) 5508 return -ENOMEM; 5509 5510 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION : 5511 NL80211_CMD_NEW_STATION); 5512 5513 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5514 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 5515 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 5516 params->supp_rates); 5517 if (!params->set) { 5518 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 5519 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 5520 params->listen_interval); 5521 } 5522 if (params->ht_capabilities) { 5523 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 5524 sizeof(*params->ht_capabilities), 5525 params->ht_capabilities); 5526 } 5527 5528 os_memset(&upd, 0, sizeof(upd)); 5529 upd.mask = sta_flags_nl80211(params->flags); 5530 upd.set = upd.mask; 5531 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5532 5533 if (params->flags & WPA_STA_WMM) { 5534 wme = nlmsg_alloc(); 5535 if (!wme) 5536 goto nla_put_failure; 5537 5538 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES, 5539 params->qosinfo & WMM_QOSINFO_STA_AC_MASK); 5540 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP, 5541 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) & 5542 WMM_QOSINFO_STA_SP_MASK); 5543 nla_put_nested(msg, NL80211_ATTR_STA_WME, wme); 5544 } 5545 5546 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5547 msg = NULL; 5548 if (ret) 5549 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION " 5550 "result: %d (%s)", params->set ? "SET" : "NEW", ret, 5551 strerror(-ret)); 5552 if (ret == -EEXIST) 5553 ret = 0; 5554 nla_put_failure: 5555 nlmsg_free(wme); 5556 nlmsg_free(msg); 5557 return ret; 5558 } 5559 5560 5561 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) 5562 { 5563 struct i802_bss *bss = priv; 5564 struct wpa_driver_nl80211_data *drv = bss->drv; 5565 struct nl_msg *msg; 5566 int ret; 5567 5568 msg = nlmsg_alloc(); 5569 if (!msg) 5570 return -ENOMEM; 5571 5572 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 5573 5574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5575 if_nametoindex(bss->ifname)); 5576 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5577 5578 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5579 if (ret == -ENOENT) 5580 return 0; 5581 return ret; 5582 nla_put_failure: 5583 nlmsg_free(msg); 5584 return -ENOBUFS; 5585 } 5586 5587 5588 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 5589 int ifidx) 5590 { 5591 struct nl_msg *msg; 5592 5593 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 5594 5595 /* stop listening for EAPOL on this interface */ 5596 del_ifidx(drv, ifidx); 5597 5598 msg = nlmsg_alloc(); 5599 if (!msg) 5600 goto nla_put_failure; 5601 5602 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 5603 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 5604 5605 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5606 return; 5607 msg = NULL; 5608 nla_put_failure: 5609 nlmsg_free(msg); 5610 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 5611 } 5612 5613 5614 static const char * nl80211_iftype_str(enum nl80211_iftype mode) 5615 { 5616 switch (mode) { 5617 case NL80211_IFTYPE_ADHOC: 5618 return "ADHOC"; 5619 case NL80211_IFTYPE_STATION: 5620 return "STATION"; 5621 case NL80211_IFTYPE_AP: 5622 return "AP"; 5623 case NL80211_IFTYPE_MONITOR: 5624 return "MONITOR"; 5625 case NL80211_IFTYPE_P2P_CLIENT: 5626 return "P2P_CLIENT"; 5627 case NL80211_IFTYPE_P2P_GO: 5628 return "P2P_GO"; 5629 default: 5630 return "unknown"; 5631 } 5632 } 5633 5634 5635 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 5636 const char *ifname, 5637 enum nl80211_iftype iftype, 5638 const u8 *addr, int wds) 5639 { 5640 struct nl_msg *msg, *flags = NULL; 5641 int ifidx; 5642 int ret = -ENOBUFS; 5643 5644 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)", 5645 iftype, nl80211_iftype_str(iftype)); 5646 5647 msg = nlmsg_alloc(); 5648 if (!msg) 5649 return -1; 5650 5651 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE); 5652 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5653 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 5654 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 5655 5656 if (iftype == NL80211_IFTYPE_MONITOR) { 5657 int err; 5658 5659 flags = nlmsg_alloc(); 5660 if (!flags) 5661 goto nla_put_failure; 5662 5663 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 5664 5665 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 5666 5667 nlmsg_free(flags); 5668 5669 if (err) 5670 goto nla_put_failure; 5671 } else if (wds) { 5672 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 5673 } 5674 5675 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5676 msg = NULL; 5677 if (ret) { 5678 nla_put_failure: 5679 nlmsg_free(msg); 5680 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 5681 ifname, ret, strerror(-ret)); 5682 return ret; 5683 } 5684 5685 ifidx = if_nametoindex(ifname); 5686 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 5687 ifname, ifidx); 5688 5689 if (ifidx <= 0) 5690 return -1; 5691 5692 /* start listening for EAPOL on this interface */ 5693 add_ifidx(drv, ifidx); 5694 5695 if (addr && iftype != NL80211_IFTYPE_MONITOR && 5696 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) { 5697 nl80211_remove_iface(drv, ifidx); 5698 return -1; 5699 } 5700 5701 return ifidx; 5702 } 5703 5704 5705 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 5706 const char *ifname, enum nl80211_iftype iftype, 5707 const u8 *addr, int wds) 5708 { 5709 int ret; 5710 5711 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 5712 5713 /* if error occurred and interface exists already */ 5714 if (ret == -ENFILE && if_nametoindex(ifname)) { 5715 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 5716 5717 /* Try to remove the interface that was already there. */ 5718 nl80211_remove_iface(drv, if_nametoindex(ifname)); 5719 5720 /* Try to create the interface again */ 5721 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 5722 wds); 5723 } 5724 5725 if (ret >= 0 && is_p2p_interface(iftype)) 5726 nl80211_disable_11b_rates(drv, ret, 1); 5727 5728 return ret; 5729 } 5730 5731 5732 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 5733 { 5734 struct ieee80211_hdr *hdr; 5735 u16 fc; 5736 union wpa_event_data event; 5737 5738 hdr = (struct ieee80211_hdr *) buf; 5739 fc = le_to_host16(hdr->frame_control); 5740 5741 os_memset(&event, 0, sizeof(event)); 5742 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 5743 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 5744 event.tx_status.dst = hdr->addr1; 5745 event.tx_status.data = buf; 5746 event.tx_status.data_len = len; 5747 event.tx_status.ack = ok; 5748 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 5749 } 5750 5751 5752 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 5753 u8 *buf, size_t len) 5754 { 5755 struct ieee80211_hdr *hdr = (void *)buf; 5756 u16 fc; 5757 union wpa_event_data event; 5758 5759 if (len < sizeof(*hdr)) 5760 return; 5761 5762 fc = le_to_host16(hdr->frame_control); 5763 5764 os_memset(&event, 0, sizeof(event)); 5765 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 5766 event.rx_from_unknown.addr = hdr->addr2; 5767 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) == 5768 (WLAN_FC_FROMDS | WLAN_FC_TODS); 5769 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 5770 } 5771 5772 5773 static void handle_frame(struct wpa_driver_nl80211_data *drv, 5774 u8 *buf, size_t len, int datarate, int ssi_signal) 5775 { 5776 struct ieee80211_hdr *hdr; 5777 u16 fc; 5778 union wpa_event_data event; 5779 5780 hdr = (struct ieee80211_hdr *) buf; 5781 fc = le_to_host16(hdr->frame_control); 5782 5783 switch (WLAN_FC_GET_TYPE(fc)) { 5784 case WLAN_FC_TYPE_MGMT: 5785 os_memset(&event, 0, sizeof(event)); 5786 event.rx_mgmt.frame = buf; 5787 event.rx_mgmt.frame_len = len; 5788 event.rx_mgmt.datarate = datarate; 5789 event.rx_mgmt.ssi_signal = ssi_signal; 5790 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 5791 break; 5792 case WLAN_FC_TYPE_CTRL: 5793 /* can only get here with PS-Poll frames */ 5794 wpa_printf(MSG_DEBUG, "CTRL"); 5795 from_unknown_sta(drv, buf, len); 5796 break; 5797 case WLAN_FC_TYPE_DATA: 5798 from_unknown_sta(drv, buf, len); 5799 break; 5800 } 5801 } 5802 5803 5804 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 5805 { 5806 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5807 int len; 5808 unsigned char buf[3000]; 5809 struct ieee80211_radiotap_iterator iter; 5810 int ret; 5811 int datarate = 0, ssi_signal = 0; 5812 int injected = 0, failed = 0, rxflags = 0; 5813 5814 len = recv(sock, buf, sizeof(buf), 0); 5815 if (len < 0) { 5816 perror("recv"); 5817 return; 5818 } 5819 5820 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 5821 printf("received invalid radiotap frame\n"); 5822 return; 5823 } 5824 5825 while (1) { 5826 ret = ieee80211_radiotap_iterator_next(&iter); 5827 if (ret == -ENOENT) 5828 break; 5829 if (ret) { 5830 printf("received invalid radiotap frame (%d)\n", ret); 5831 return; 5832 } 5833 switch (iter.this_arg_index) { 5834 case IEEE80211_RADIOTAP_FLAGS: 5835 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 5836 len -= 4; 5837 break; 5838 case IEEE80211_RADIOTAP_RX_FLAGS: 5839 rxflags = 1; 5840 break; 5841 case IEEE80211_RADIOTAP_TX_FLAGS: 5842 injected = 1; 5843 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 5844 IEEE80211_RADIOTAP_F_TX_FAIL; 5845 break; 5846 case IEEE80211_RADIOTAP_DATA_RETRIES: 5847 break; 5848 case IEEE80211_RADIOTAP_CHANNEL: 5849 /* TODO: convert from freq/flags to channel number */ 5850 break; 5851 case IEEE80211_RADIOTAP_RATE: 5852 datarate = *iter.this_arg * 5; 5853 break; 5854 case IEEE80211_RADIOTAP_DB_ANTSIGNAL: 5855 ssi_signal = *iter.this_arg; 5856 break; 5857 } 5858 } 5859 5860 if (rxflags && injected) 5861 return; 5862 5863 if (!injected) 5864 handle_frame(drv, buf + iter.max_length, 5865 len - iter.max_length, datarate, ssi_signal); 5866 else 5867 handle_tx_callback(drv->ctx, buf + iter.max_length, 5868 len - iter.max_length, !failed); 5869 } 5870 5871 5872 /* 5873 * we post-process the filter code later and rewrite 5874 * this to the offset to the last instruction 5875 */ 5876 #define PASS 0xFF 5877 #define FAIL 0xFE 5878 5879 static struct sock_filter msock_filter_insns[] = { 5880 /* 5881 * do a little-endian load of the radiotap length field 5882 */ 5883 /* load lower byte into A */ 5884 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 5885 /* put it into X (== index register) */ 5886 BPF_STMT(BPF_MISC| BPF_TAX, 0), 5887 /* load upper byte into A */ 5888 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 5889 /* left-shift it by 8 */ 5890 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 5891 /* or with X */ 5892 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 5893 /* put result into X */ 5894 BPF_STMT(BPF_MISC| BPF_TAX, 0), 5895 5896 /* 5897 * Allow management frames through, this also gives us those 5898 * management frames that we sent ourselves with status 5899 */ 5900 /* load the lower byte of the IEEE 802.11 frame control field */ 5901 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 5902 /* mask off frame type and version */ 5903 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 5904 /* accept frame if it's both 0, fall through otherwise */ 5905 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 5906 5907 /* 5908 * TODO: add a bit to radiotap RX flags that indicates 5909 * that the sending station is not associated, then 5910 * add a filter here that filters on our DA and that flag 5911 * to allow us to deauth frames to that bad station. 5912 * 5913 * For now allow all To DS data frames through. 5914 */ 5915 /* load the IEEE 802.11 frame control field */ 5916 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 5917 /* mask off frame type, version and DS status */ 5918 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 5919 /* accept frame if version 0, type 2 and To DS, fall through otherwise 5920 */ 5921 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 5922 5923 #if 0 5924 /* 5925 * drop non-data frames 5926 */ 5927 /* load the lower byte of the frame control field */ 5928 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 5929 /* mask off QoS bit */ 5930 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 5931 /* drop non-data frames */ 5932 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 5933 #endif 5934 /* load the upper byte of the frame control field */ 5935 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 5936 /* mask off toDS/fromDS */ 5937 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 5938 /* accept WDS frames */ 5939 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 5940 5941 /* 5942 * add header length to index 5943 */ 5944 /* load the lower byte of the frame control field */ 5945 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 5946 /* mask off QoS bit */ 5947 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 5948 /* right shift it by 6 to give 0 or 2 */ 5949 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 5950 /* add data frame header length */ 5951 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 5952 /* add index, was start of 802.11 header */ 5953 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 5954 /* move to index, now start of LL header */ 5955 BPF_STMT(BPF_MISC | BPF_TAX, 0), 5956 5957 /* 5958 * Accept empty data frames, we use those for 5959 * polling activity. 5960 */ 5961 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 5962 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 5963 5964 /* 5965 * Accept EAPOL frames 5966 */ 5967 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 5968 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 5969 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 5970 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 5971 5972 /* keep these last two statements or change the code below */ 5973 /* return 0 == "DROP" */ 5974 BPF_STMT(BPF_RET | BPF_K, 0), 5975 /* return ~0 == "keep all" */ 5976 BPF_STMT(BPF_RET | BPF_K, ~0), 5977 }; 5978 5979 static struct sock_fprog msock_filter = { 5980 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 5981 .filter = msock_filter_insns, 5982 }; 5983 5984 5985 static int add_monitor_filter(int s) 5986 { 5987 int idx; 5988 5989 /* rewrite all PASS/FAIL jump offsets */ 5990 for (idx = 0; idx < msock_filter.len; idx++) { 5991 struct sock_filter *insn = &msock_filter_insns[idx]; 5992 5993 if (BPF_CLASS(insn->code) == BPF_JMP) { 5994 if (insn->code == (BPF_JMP|BPF_JA)) { 5995 if (insn->k == PASS) 5996 insn->k = msock_filter.len - idx - 2; 5997 else if (insn->k == FAIL) 5998 insn->k = msock_filter.len - idx - 3; 5999 } 6000 6001 if (insn->jt == PASS) 6002 insn->jt = msock_filter.len - idx - 2; 6003 else if (insn->jt == FAIL) 6004 insn->jt = msock_filter.len - idx - 3; 6005 6006 if (insn->jf == PASS) 6007 insn->jf = msock_filter.len - idx - 2; 6008 else if (insn->jf == FAIL) 6009 insn->jf = msock_filter.len - idx - 3; 6010 } 6011 } 6012 6013 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 6014 &msock_filter, sizeof(msock_filter))) { 6015 perror("SO_ATTACH_FILTER"); 6016 return -1; 6017 } 6018 6019 return 0; 6020 } 6021 6022 6023 static void nl80211_remove_monitor_interface( 6024 struct wpa_driver_nl80211_data *drv) 6025 { 6026 drv->monitor_refcount--; 6027 if (drv->monitor_refcount > 0) 6028 return; 6029 6030 if (drv->monitor_ifidx >= 0) { 6031 nl80211_remove_iface(drv, drv->monitor_ifidx); 6032 drv->monitor_ifidx = -1; 6033 } 6034 if (drv->monitor_sock >= 0) { 6035 eloop_unregister_read_sock(drv->monitor_sock); 6036 close(drv->monitor_sock); 6037 drv->monitor_sock = -1; 6038 } 6039 } 6040 6041 6042 static int 6043 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 6044 { 6045 char buf[IFNAMSIZ]; 6046 struct sockaddr_ll ll; 6047 int optval; 6048 socklen_t optlen; 6049 6050 if (drv->monitor_ifidx >= 0) { 6051 drv->monitor_refcount++; 6052 return 0; 6053 } 6054 6055 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) { 6056 /* 6057 * P2P interface name is of the format p2p-%s-%d. For monitor 6058 * interface name corresponding to P2P GO, replace "p2p-" with 6059 * "mon-" to retain the same interface name length and to 6060 * indicate that it is a monitor interface. 6061 */ 6062 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4); 6063 } else { 6064 /* Non-P2P interface with AP functionality. */ 6065 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 6066 } 6067 6068 buf[IFNAMSIZ - 1] = '\0'; 6069 6070 drv->monitor_ifidx = 6071 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 6072 0); 6073 6074 if (drv->monitor_ifidx == -EOPNOTSUPP) { 6075 /* 6076 * This is backward compatibility for a few versions of 6077 * the kernel only that didn't advertise the right 6078 * attributes for the only driver that then supported 6079 * AP mode w/o monitor -- ath6kl. 6080 */ 6081 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 6082 "monitor interface type - try to run without it"); 6083 drv->device_ap_sme = 1; 6084 } 6085 6086 if (drv->monitor_ifidx < 0) 6087 return -1; 6088 6089 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1)) 6090 goto error; 6091 6092 memset(&ll, 0, sizeof(ll)); 6093 ll.sll_family = AF_PACKET; 6094 ll.sll_ifindex = drv->monitor_ifidx; 6095 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 6096 if (drv->monitor_sock < 0) { 6097 perror("socket[PF_PACKET,SOCK_RAW]"); 6098 goto error; 6099 } 6100 6101 if (add_monitor_filter(drv->monitor_sock)) { 6102 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 6103 "interface; do filtering in user space"); 6104 /* This works, but will cost in performance. */ 6105 } 6106 6107 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 6108 perror("monitor socket bind"); 6109 goto error; 6110 } 6111 6112 optlen = sizeof(optval); 6113 optval = 20; 6114 if (setsockopt 6115 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 6116 perror("Failed to set socket priority"); 6117 goto error; 6118 } 6119 6120 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 6121 drv, NULL)) { 6122 printf("Could not register monitor read socket\n"); 6123 goto error; 6124 } 6125 6126 return 0; 6127 error: 6128 nl80211_remove_monitor_interface(drv); 6129 return -1; 6130 } 6131 6132 6133 static int nl80211_setup_ap(struct i802_bss *bss) 6134 { 6135 struct wpa_driver_nl80211_data *drv = bss->drv; 6136 6137 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d " 6138 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor); 6139 6140 /* 6141 * Disable Probe Request reporting unless we need it in this way for 6142 * devices that include the AP SME, in the other case (unless using 6143 * monitor iface) we'll get it through the nl_mgmt socket instead. 6144 */ 6145 if (!drv->device_ap_sme) 6146 wpa_driver_nl80211_probe_req_report(bss, 0); 6147 6148 if (!drv->device_ap_sme && !drv->use_monitor) 6149 if (nl80211_mgmt_subscribe_ap(bss)) 6150 return -1; 6151 6152 #ifndef ANDROID_P2P 6153 if (drv->device_ap_sme && !drv->use_monitor) 6154 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6155 return -1; 6156 6157 if (!drv->device_ap_sme && drv->use_monitor && 6158 nl80211_create_monitor_interface(drv) && 6159 !drv->device_ap_sme) 6160 #else 6161 if (drv->device_ap_sme) 6162 if (nl80211_mgmt_subscribe_ap_dev_sme(bss)) 6163 return -1; 6164 6165 if (drv->use_monitor && 6166 nl80211_create_monitor_interface(drv)) 6167 #endif 6168 return -1; 6169 6170 if (drv->device_ap_sme && 6171 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) { 6172 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable " 6173 "Probe Request frame reporting in AP mode"); 6174 /* Try to survive without this */ 6175 } 6176 6177 return 0; 6178 } 6179 6180 6181 static void nl80211_teardown_ap(struct i802_bss *bss) 6182 { 6183 struct wpa_driver_nl80211_data *drv = bss->drv; 6184 6185 if (drv->device_ap_sme) { 6186 wpa_driver_nl80211_probe_req_report(bss, 0); 6187 if (!drv->use_monitor) 6188 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)"); 6189 } else if (drv->use_monitor) 6190 nl80211_remove_monitor_interface(drv); 6191 else 6192 nl80211_mgmt_unsubscribe(bss, "AP teardown"); 6193 6194 bss->beacon_set = 0; 6195 } 6196 6197 6198 static int nl80211_send_eapol_data(struct i802_bss *bss, 6199 const u8 *addr, const u8 *data, 6200 size_t data_len) 6201 { 6202 struct sockaddr_ll ll; 6203 int ret; 6204 6205 if (bss->drv->eapol_tx_sock < 0) { 6206 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL"); 6207 return -1; 6208 } 6209 6210 os_memset(&ll, 0, sizeof(ll)); 6211 ll.sll_family = AF_PACKET; 6212 ll.sll_ifindex = bss->ifindex; 6213 ll.sll_protocol = htons(ETH_P_PAE); 6214 ll.sll_halen = ETH_ALEN; 6215 os_memcpy(ll.sll_addr, addr, ETH_ALEN); 6216 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0, 6217 (struct sockaddr *) &ll, sizeof(ll)); 6218 if (ret < 0) 6219 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s", 6220 strerror(errno)); 6221 6222 return ret; 6223 } 6224 6225 6226 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 6227 6228 static int wpa_driver_nl80211_hapd_send_eapol( 6229 void *priv, const u8 *addr, const u8 *data, 6230 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 6231 { 6232 struct i802_bss *bss = priv; 6233 struct wpa_driver_nl80211_data *drv = bss->drv; 6234 struct ieee80211_hdr *hdr; 6235 size_t len; 6236 u8 *pos; 6237 int res; 6238 int qos = flags & WPA_STA_WMM; 6239 #ifndef ANDROID_P2P 6240 if (drv->device_ap_sme || !drv->use_monitor) 6241 #else 6242 if (drv->device_ap_sme && !drv->use_monitor) 6243 #endif 6244 return nl80211_send_eapol_data(bss, addr, data, data_len); 6245 6246 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 6247 data_len; 6248 hdr = os_zalloc(len); 6249 if (hdr == NULL) { 6250 printf("malloc() failed for i802_send_data(len=%lu)\n", 6251 (unsigned long) len); 6252 return -1; 6253 } 6254 6255 hdr->frame_control = 6256 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 6257 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 6258 if (encrypt) 6259 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 6260 if (qos) { 6261 hdr->frame_control |= 6262 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 6263 } 6264 6265 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 6266 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 6267 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 6268 pos = (u8 *) (hdr + 1); 6269 6270 if (qos) { 6271 /* add an empty QoS header if needed */ 6272 pos[0] = 0; 6273 pos[1] = 0; 6274 pos += 2; 6275 } 6276 6277 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 6278 pos += sizeof(rfc1042_header); 6279 WPA_PUT_BE16(pos, ETH_P_PAE); 6280 pos += 2; 6281 memcpy(pos, data, data_len); 6282 6283 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0, 6284 0, 0, 0, 0); 6285 if (res < 0) { 6286 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 6287 "failed: %d (%s)", 6288 (unsigned long) len, errno, strerror(errno)); 6289 } 6290 os_free(hdr); 6291 6292 return res; 6293 } 6294 6295 6296 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 6297 int total_flags, 6298 int flags_or, int flags_and) 6299 { 6300 struct i802_bss *bss = priv; 6301 struct wpa_driver_nl80211_data *drv = bss->drv; 6302 struct nl_msg *msg, *flags = NULL; 6303 struct nl80211_sta_flag_update upd; 6304 6305 msg = nlmsg_alloc(); 6306 if (!msg) 6307 return -ENOMEM; 6308 6309 flags = nlmsg_alloc(); 6310 if (!flags) { 6311 nlmsg_free(msg); 6312 return -ENOMEM; 6313 } 6314 6315 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 6316 6317 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 6318 if_nametoindex(bss->ifname)); 6319 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 6320 6321 /* 6322 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 6323 * can be removed eventually. 6324 */ 6325 if (total_flags & WPA_STA_AUTHORIZED) 6326 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 6327 6328 if (total_flags & WPA_STA_WMM) 6329 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 6330 6331 if (total_flags & WPA_STA_SHORT_PREAMBLE) 6332 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 6333 6334 if (total_flags & WPA_STA_MFP) 6335 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 6336 6337 if (total_flags & WPA_STA_TDLS_PEER) 6338 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER); 6339 6340 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 6341 goto nla_put_failure; 6342 6343 os_memset(&upd, 0, sizeof(upd)); 6344 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 6345 upd.set = sta_flags_nl80211(flags_or); 6346 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 6347 6348 nlmsg_free(flags); 6349 6350 return send_and_recv_msgs(drv, msg, NULL, NULL); 6351 nla_put_failure: 6352 nlmsg_free(msg); 6353 nlmsg_free(flags); 6354 return -ENOBUFS; 6355 } 6356 6357 6358 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 6359 struct wpa_driver_associate_params *params) 6360 { 6361 enum nl80211_iftype nlmode; 6362 6363 if (params->p2p) { 6364 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 6365 "group (GO)"); 6366 nlmode = NL80211_IFTYPE_P2P_GO; 6367 } else 6368 nlmode = NL80211_IFTYPE_AP; 6369 6370 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) || 6371 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) { 6372 nl80211_remove_monitor_interface(drv); 6373 return -1; 6374 } 6375 6376 return 0; 6377 } 6378 6379 6380 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 6381 { 6382 struct nl_msg *msg; 6383 int ret = -1; 6384 6385 msg = nlmsg_alloc(); 6386 if (!msg) 6387 return -1; 6388 6389 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS); 6390 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6391 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6392 msg = NULL; 6393 if (ret) { 6394 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 6395 "(%s)", ret, strerror(-ret)); 6396 goto nla_put_failure; 6397 } 6398 6399 ret = 0; 6400 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 6401 6402 nla_put_failure: 6403 nlmsg_free(msg); 6404 return ret; 6405 } 6406 6407 6408 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 6409 struct wpa_driver_associate_params *params) 6410 { 6411 struct nl_msg *msg; 6412 int ret = -1; 6413 int count = 0; 6414 6415 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 6416 6417 if (wpa_driver_nl80211_set_mode(&drv->first_bss, 6418 NL80211_IFTYPE_ADHOC)) { 6419 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 6420 "IBSS mode"); 6421 return -1; 6422 } 6423 6424 retry: 6425 msg = nlmsg_alloc(); 6426 if (!msg) 6427 return -1; 6428 6429 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS); 6430 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6431 6432 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 6433 goto nla_put_failure; 6434 6435 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6436 params->ssid, params->ssid_len); 6437 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6438 params->ssid); 6439 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6440 drv->ssid_len = params->ssid_len; 6441 6442 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6443 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6444 6445 ret = nl80211_set_conn_keys(params, msg); 6446 if (ret) 6447 goto nla_put_failure; 6448 6449 if (params->bssid && params->fixed_bssid) { 6450 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR, 6451 MAC2STR(params->bssid)); 6452 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6453 } 6454 6455 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6456 params->key_mgmt_suite == KEY_MGMT_PSK || 6457 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 || 6458 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) { 6459 wpa_printf(MSG_DEBUG, " * control port"); 6460 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6461 } 6462 6463 if (params->wpa_ie) { 6464 wpa_hexdump(MSG_DEBUG, 6465 " * Extra IEs for Beacon/Probe Response frames", 6466 params->wpa_ie, params->wpa_ie_len); 6467 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6468 params->wpa_ie); 6469 } 6470 6471 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6472 msg = NULL; 6473 if (ret) { 6474 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 6475 ret, strerror(-ret)); 6476 count++; 6477 if (ret == -EALREADY && count == 1) { 6478 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 6479 "forced leave"); 6480 nl80211_leave_ibss(drv); 6481 nlmsg_free(msg); 6482 goto retry; 6483 } 6484 6485 goto nla_put_failure; 6486 } 6487 ret = 0; 6488 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 6489 6490 nla_put_failure: 6491 nlmsg_free(msg); 6492 return ret; 6493 } 6494 6495 6496 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv, 6497 u8 *bssid) 6498 { 6499 struct nl_msg *msg; 6500 int ret; 6501 struct nl80211_bss_info_arg arg; 6502 6503 os_memset(&arg, 0, sizeof(arg)); 6504 msg = nlmsg_alloc(); 6505 if (!msg) 6506 goto nla_put_failure; 6507 6508 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 6509 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6510 6511 arg.drv = drv; 6512 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 6513 msg = NULL; 6514 if (ret == 0) { 6515 if (is_zero_ether_addr(arg.assoc_bssid)) 6516 return -ENOTCONN; 6517 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN); 6518 return 0; 6519 } 6520 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 6521 "(%s)", ret, strerror(-ret)); 6522 nla_put_failure: 6523 nlmsg_free(msg); 6524 return drv->assoc_freq; 6525 } 6526 6527 6528 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 6529 const u8 *bssid) 6530 { 6531 u8 addr[ETH_ALEN]; 6532 6533 if (bssid == NULL) { 6534 int res = nl80211_get_assoc_bssid(drv, addr); 6535 if (res) 6536 return res; 6537 bssid = addr; 6538 } 6539 6540 return wpa_driver_nl80211_disconnect(drv, bssid, 6541 WLAN_REASON_PREV_AUTH_NOT_VALID); 6542 } 6543 6544 6545 static int wpa_driver_nl80211_connect( 6546 struct wpa_driver_nl80211_data *drv, 6547 struct wpa_driver_associate_params *params) 6548 { 6549 struct nl_msg *msg; 6550 enum nl80211_auth_type type; 6551 int ret = 0; 6552 int algs; 6553 6554 msg = nlmsg_alloc(); 6555 if (!msg) 6556 return -1; 6557 6558 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 6559 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT); 6560 6561 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6562 if (params->bssid) { 6563 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6564 MAC2STR(params->bssid)); 6565 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6566 } 6567 if (params->freq) { 6568 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6569 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6570 } 6571 if (params->ssid) { 6572 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6573 params->ssid, params->ssid_len); 6574 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6575 params->ssid); 6576 if (params->ssid_len > sizeof(drv->ssid)) 6577 goto nla_put_failure; 6578 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6579 drv->ssid_len = params->ssid_len; 6580 } 6581 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6582 if (params->wpa_ie) 6583 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6584 params->wpa_ie); 6585 6586 algs = 0; 6587 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6588 algs++; 6589 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6590 algs++; 6591 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6592 algs++; 6593 if (algs > 1) { 6594 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 6595 "selection"); 6596 goto skip_auth_type; 6597 } 6598 6599 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 6600 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 6601 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 6602 type = NL80211_AUTHTYPE_SHARED_KEY; 6603 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 6604 type = NL80211_AUTHTYPE_NETWORK_EAP; 6605 else if (params->auth_alg & WPA_AUTH_ALG_FT) 6606 type = NL80211_AUTHTYPE_FT; 6607 else 6608 goto nla_put_failure; 6609 6610 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 6611 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 6612 6613 skip_auth_type: 6614 if (params->wpa_proto) { 6615 enum nl80211_wpa_versions ver = 0; 6616 6617 if (params->wpa_proto & WPA_PROTO_WPA) 6618 ver |= NL80211_WPA_VERSION_1; 6619 if (params->wpa_proto & WPA_PROTO_RSN) 6620 ver |= NL80211_WPA_VERSION_2; 6621 6622 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver); 6623 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 6624 } 6625 6626 if (params->pairwise_suite != CIPHER_NONE) { 6627 int cipher; 6628 6629 switch (params->pairwise_suite) { 6630 case CIPHER_WEP40: 6631 cipher = WLAN_CIPHER_SUITE_WEP40; 6632 break; 6633 case CIPHER_WEP104: 6634 cipher = WLAN_CIPHER_SUITE_WEP104; 6635 break; 6636 case CIPHER_CCMP: 6637 cipher = WLAN_CIPHER_SUITE_CCMP; 6638 break; 6639 case CIPHER_TKIP: 6640 default: 6641 cipher = WLAN_CIPHER_SUITE_TKIP; 6642 break; 6643 } 6644 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6645 } 6646 6647 if (params->group_suite != CIPHER_NONE) { 6648 int cipher; 6649 6650 switch (params->group_suite) { 6651 case CIPHER_WEP40: 6652 cipher = WLAN_CIPHER_SUITE_WEP40; 6653 break; 6654 case CIPHER_WEP104: 6655 cipher = WLAN_CIPHER_SUITE_WEP104; 6656 break; 6657 case CIPHER_CCMP: 6658 cipher = WLAN_CIPHER_SUITE_CCMP; 6659 break; 6660 case CIPHER_TKIP: 6661 default: 6662 cipher = WLAN_CIPHER_SUITE_TKIP; 6663 break; 6664 } 6665 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6666 } 6667 6668 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 6669 params->key_mgmt_suite == KEY_MGMT_PSK) { 6670 int mgmt = WLAN_AKM_SUITE_PSK; 6671 6672 switch (params->key_mgmt_suite) { 6673 case KEY_MGMT_802_1X: 6674 mgmt = WLAN_AKM_SUITE_8021X; 6675 break; 6676 case KEY_MGMT_PSK: 6677 default: 6678 mgmt = WLAN_AKM_SUITE_PSK; 6679 break; 6680 } 6681 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 6682 } 6683 6684 if (params->disable_ht) 6685 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6686 6687 if (params->htcaps && params->htcaps_mask) { 6688 int sz = sizeof(struct ieee80211_ht_capabilities); 6689 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6690 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6691 params->htcaps_mask); 6692 } 6693 6694 ret = nl80211_set_conn_keys(params, msg); 6695 if (ret) 6696 goto nla_put_failure; 6697 6698 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6699 msg = NULL; 6700 if (ret) { 6701 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 6702 "(%s)", ret, strerror(-ret)); 6703 /* 6704 * cfg80211 does not currently accept new connection if we are 6705 * already connected. As a workaround, force disconnection and 6706 * try again once the driver indicates it completed 6707 * disconnection. 6708 */ 6709 if (ret == -EALREADY) 6710 nl80211_disconnect(drv, params->bssid); 6711 goto nla_put_failure; 6712 } 6713 ret = 0; 6714 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 6715 6716 nla_put_failure: 6717 nlmsg_free(msg); 6718 return ret; 6719 6720 } 6721 6722 6723 static int wpa_driver_nl80211_associate( 6724 void *priv, struct wpa_driver_associate_params *params) 6725 { 6726 struct i802_bss *bss = priv; 6727 struct wpa_driver_nl80211_data *drv = bss->drv; 6728 int ret = -1; 6729 struct nl_msg *msg; 6730 6731 if (params->mode == IEEE80211_MODE_AP) 6732 return wpa_driver_nl80211_ap(drv, params); 6733 6734 if (params->mode == IEEE80211_MODE_IBSS) 6735 return wpa_driver_nl80211_ibss(drv, params); 6736 6737 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 6738 enum nl80211_iftype nlmode = params->p2p ? 6739 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION; 6740 6741 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0) 6742 return -1; 6743 return wpa_driver_nl80211_connect(drv, params); 6744 } 6745 6746 drv->associated = 0; 6747 6748 msg = nlmsg_alloc(); 6749 if (!msg) 6750 return -1; 6751 6752 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 6753 drv->ifindex); 6754 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE); 6755 6756 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6757 if (params->bssid) { 6758 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 6759 MAC2STR(params->bssid)); 6760 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 6761 } 6762 if (params->freq) { 6763 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 6764 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 6765 drv->assoc_freq = params->freq; 6766 } else 6767 drv->assoc_freq = 0; 6768 if (params->ssid) { 6769 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 6770 params->ssid, params->ssid_len); 6771 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 6772 params->ssid); 6773 if (params->ssid_len > sizeof(drv->ssid)) 6774 goto nla_put_failure; 6775 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 6776 drv->ssid_len = params->ssid_len; 6777 } 6778 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 6779 if (params->wpa_ie) 6780 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 6781 params->wpa_ie); 6782 6783 if (params->pairwise_suite != CIPHER_NONE) { 6784 int cipher; 6785 6786 switch (params->pairwise_suite) { 6787 case CIPHER_WEP40: 6788 cipher = WLAN_CIPHER_SUITE_WEP40; 6789 break; 6790 case CIPHER_WEP104: 6791 cipher = WLAN_CIPHER_SUITE_WEP104; 6792 break; 6793 case CIPHER_CCMP: 6794 cipher = WLAN_CIPHER_SUITE_CCMP; 6795 break; 6796 case CIPHER_TKIP: 6797 default: 6798 cipher = WLAN_CIPHER_SUITE_TKIP; 6799 break; 6800 } 6801 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 6802 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 6803 } 6804 6805 if (params->group_suite != CIPHER_NONE) { 6806 int cipher; 6807 6808 switch (params->group_suite) { 6809 case CIPHER_WEP40: 6810 cipher = WLAN_CIPHER_SUITE_WEP40; 6811 break; 6812 case CIPHER_WEP104: 6813 cipher = WLAN_CIPHER_SUITE_WEP104; 6814 break; 6815 case CIPHER_CCMP: 6816 cipher = WLAN_CIPHER_SUITE_CCMP; 6817 break; 6818 case CIPHER_TKIP: 6819 default: 6820 cipher = WLAN_CIPHER_SUITE_TKIP; 6821 break; 6822 } 6823 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 6824 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 6825 } 6826 6827 #ifdef CONFIG_IEEE80211W 6828 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 6829 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 6830 #endif /* CONFIG_IEEE80211W */ 6831 6832 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 6833 6834 if (params->prev_bssid) { 6835 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 6836 MAC2STR(params->prev_bssid)); 6837 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 6838 params->prev_bssid); 6839 } 6840 6841 if (params->disable_ht) 6842 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT); 6843 6844 if (params->htcaps && params->htcaps_mask) { 6845 int sz = sizeof(struct ieee80211_ht_capabilities); 6846 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps); 6847 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz, 6848 params->htcaps_mask); 6849 } 6850 6851 if (params->p2p) 6852 wpa_printf(MSG_DEBUG, " * P2P group"); 6853 6854 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6855 msg = NULL; 6856 if (ret) { 6857 wpa_dbg(drv->ctx, MSG_DEBUG, 6858 "nl80211: MLME command failed (assoc): ret=%d (%s)", 6859 ret, strerror(-ret)); 6860 nl80211_dump_scan(drv); 6861 goto nla_put_failure; 6862 } 6863 ret = 0; 6864 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 6865 "successfully"); 6866 6867 nla_put_failure: 6868 nlmsg_free(msg); 6869 return ret; 6870 } 6871 6872 6873 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 6874 int ifindex, enum nl80211_iftype mode) 6875 { 6876 struct nl_msg *msg; 6877 int ret = -ENOBUFS; 6878 6879 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)", 6880 ifindex, mode, nl80211_iftype_str(mode)); 6881 6882 msg = nlmsg_alloc(); 6883 if (!msg) 6884 return -ENOMEM; 6885 6886 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE); 6887 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 6888 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 6889 6890 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6891 msg = NULL; 6892 if (!ret) 6893 return 0; 6894 nla_put_failure: 6895 nlmsg_free(msg); 6896 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 6897 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 6898 return ret; 6899 } 6900 6901 6902 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 6903 enum nl80211_iftype nlmode) 6904 { 6905 struct wpa_driver_nl80211_data *drv = bss->drv; 6906 int ret = -1; 6907 int i; 6908 int was_ap = is_ap_interface(drv->nlmode); 6909 int res; 6910 6911 res = nl80211_set_mode(drv, drv->ifindex, nlmode); 6912 if (res == 0) { 6913 drv->nlmode = nlmode; 6914 ret = 0; 6915 goto done; 6916 } 6917 6918 if (res == -ENODEV) 6919 return -1; 6920 6921 if (nlmode == drv->nlmode) { 6922 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 6923 "requested mode - ignore error"); 6924 ret = 0; 6925 goto done; /* Already in the requested mode */ 6926 } 6927 6928 /* mac80211 doesn't allow mode changes while the device is up, so 6929 * take the device down, try to set the mode again, and bring the 6930 * device back up. 6931 */ 6932 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 6933 "interface down"); 6934 for (i = 0; i < 10; i++) { 6935 res = linux_set_iface_flags(drv->global->ioctl_sock, 6936 bss->ifname, 0); 6937 if (res == -EACCES || res == -ENODEV) 6938 break; 6939 if (res == 0) { 6940 /* Try to set the mode again while the interface is 6941 * down */ 6942 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 6943 if (ret == -EACCES) 6944 break; 6945 res = linux_set_iface_flags(drv->global->ioctl_sock, 6946 bss->ifname, 1); 6947 if (res && !ret) 6948 ret = -1; 6949 else if (ret != -EBUSY) 6950 break; 6951 } else 6952 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 6953 "interface down"); 6954 os_sleep(0, 100000); 6955 } 6956 6957 if (!ret) { 6958 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 6959 "interface is down"); 6960 drv->nlmode = nlmode; 6961 drv->ignore_if_down_event = 1; 6962 } 6963 6964 done: 6965 if (ret) { 6966 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 6967 "from %d failed", nlmode, drv->nlmode); 6968 return ret; 6969 } 6970 6971 if (is_ap_interface(nlmode)) { 6972 nl80211_mgmt_unsubscribe(bss, "start AP"); 6973 /* Setup additional AP mode functionality if needed */ 6974 if (nl80211_setup_ap(bss)) 6975 return -1; 6976 } else if (was_ap) { 6977 /* Remove additional AP mode functionality */ 6978 nl80211_teardown_ap(bss); 6979 } else { 6980 nl80211_mgmt_unsubscribe(bss, "mode change"); 6981 } 6982 6983 if (!is_ap_interface(nlmode) && 6984 nl80211_mgmt_subscribe_non_ap(bss) < 0) 6985 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 6986 "frame processing - ignore for now"); 6987 6988 return 0; 6989 } 6990 6991 6992 static int wpa_driver_nl80211_get_capa(void *priv, 6993 struct wpa_driver_capa *capa) 6994 { 6995 struct i802_bss *bss = priv; 6996 struct wpa_driver_nl80211_data *drv = bss->drv; 6997 if (!drv->has_capability) 6998 return -1; 6999 os_memcpy(capa, &drv->capa, sizeof(*capa)); 7000 return 0; 7001 } 7002 7003 7004 static int wpa_driver_nl80211_set_operstate(void *priv, int state) 7005 { 7006 struct i802_bss *bss = priv; 7007 struct wpa_driver_nl80211_data *drv = bss->drv; 7008 7009 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 7010 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 7011 drv->operstate = state; 7012 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1, 7013 state ? IF_OPER_UP : IF_OPER_DORMANT); 7014 } 7015 7016 7017 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 7018 { 7019 struct i802_bss *bss = priv; 7020 struct wpa_driver_nl80211_data *drv = bss->drv; 7021 struct nl_msg *msg; 7022 struct nl80211_sta_flag_update upd; 7023 7024 msg = nlmsg_alloc(); 7025 if (!msg) 7026 return -ENOMEM; 7027 7028 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7029 7030 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7031 if_nametoindex(bss->ifname)); 7032 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 7033 7034 os_memset(&upd, 0, sizeof(upd)); 7035 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 7036 if (authorized) 7037 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 7038 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 7039 7040 return send_and_recv_msgs(drv, msg, NULL, NULL); 7041 nla_put_failure: 7042 nlmsg_free(msg); 7043 return -ENOBUFS; 7044 } 7045 7046 7047 /* Set kernel driver on given frequency (MHz) */ 7048 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 7049 { 7050 struct i802_bss *bss = priv; 7051 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled, 7052 freq->sec_channel_offset); 7053 } 7054 7055 7056 #if defined(HOSTAPD) || defined(CONFIG_AP) 7057 7058 static inline int min_int(int a, int b) 7059 { 7060 if (a < b) 7061 return a; 7062 return b; 7063 } 7064 7065 7066 static int get_key_handler(struct nl_msg *msg, void *arg) 7067 { 7068 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7069 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7070 7071 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7072 genlmsg_attrlen(gnlh, 0), NULL); 7073 7074 /* 7075 * TODO: validate the key index and mac address! 7076 * Otherwise, there's a race condition as soon as 7077 * the kernel starts sending key notifications. 7078 */ 7079 7080 if (tb[NL80211_ATTR_KEY_SEQ]) 7081 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 7082 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 7083 return NL_SKIP; 7084 } 7085 7086 7087 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 7088 int idx, u8 *seq) 7089 { 7090 struct i802_bss *bss = priv; 7091 struct wpa_driver_nl80211_data *drv = bss->drv; 7092 struct nl_msg *msg; 7093 7094 msg = nlmsg_alloc(); 7095 if (!msg) 7096 return -ENOMEM; 7097 7098 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY); 7099 7100 if (addr) 7101 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7102 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 7103 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 7104 7105 memset(seq, 0, 6); 7106 7107 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 7108 nla_put_failure: 7109 nlmsg_free(msg); 7110 return -ENOBUFS; 7111 } 7112 7113 7114 static int i802_set_rts(void *priv, int rts) 7115 { 7116 struct i802_bss *bss = priv; 7117 struct wpa_driver_nl80211_data *drv = bss->drv; 7118 struct nl_msg *msg; 7119 int ret = -ENOBUFS; 7120 u32 val; 7121 7122 msg = nlmsg_alloc(); 7123 if (!msg) 7124 return -ENOMEM; 7125 7126 if (rts >= 2347) 7127 val = (u32) -1; 7128 else 7129 val = rts; 7130 7131 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7132 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7133 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 7134 7135 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7136 msg = NULL; 7137 if (!ret) 7138 return 0; 7139 nla_put_failure: 7140 nlmsg_free(msg); 7141 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 7142 "%d (%s)", rts, ret, strerror(-ret)); 7143 return ret; 7144 } 7145 7146 7147 static int i802_set_frag(void *priv, int frag) 7148 { 7149 struct i802_bss *bss = priv; 7150 struct wpa_driver_nl80211_data *drv = bss->drv; 7151 struct nl_msg *msg; 7152 int ret = -ENOBUFS; 7153 u32 val; 7154 7155 msg = nlmsg_alloc(); 7156 if (!msg) 7157 return -ENOMEM; 7158 7159 if (frag >= 2346) 7160 val = (u32) -1; 7161 else 7162 val = frag; 7163 7164 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7165 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 7166 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 7167 7168 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7169 msg = NULL; 7170 if (!ret) 7171 return 0; 7172 nla_put_failure: 7173 nlmsg_free(msg); 7174 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 7175 "%d: %d (%s)", frag, ret, strerror(-ret)); 7176 return ret; 7177 } 7178 7179 7180 static int i802_flush(void *priv) 7181 { 7182 struct i802_bss *bss = priv; 7183 struct wpa_driver_nl80211_data *drv = bss->drv; 7184 struct nl_msg *msg; 7185 int res; 7186 7187 msg = nlmsg_alloc(); 7188 if (!msg) 7189 return -1; 7190 7191 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION); 7192 7193 /* 7194 * XXX: FIX! this needs to flush all VLANs too 7195 */ 7196 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7197 if_nametoindex(bss->ifname)); 7198 7199 res = send_and_recv_msgs(drv, msg, NULL, NULL); 7200 if (res) { 7201 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d " 7202 "(%s)", res, strerror(-res)); 7203 } 7204 return res; 7205 nla_put_failure: 7206 nlmsg_free(msg); 7207 return -ENOBUFS; 7208 } 7209 7210 7211 static int get_sta_handler(struct nl_msg *msg, void *arg) 7212 { 7213 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7214 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7215 struct hostap_sta_driver_data *data = arg; 7216 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 7217 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 7218 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 7219 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 7220 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 7221 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 7222 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 7223 }; 7224 7225 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7226 genlmsg_attrlen(gnlh, 0), NULL); 7227 7228 /* 7229 * TODO: validate the interface and mac address! 7230 * Otherwise, there's a race condition as soon as 7231 * the kernel starts sending station notifications. 7232 */ 7233 7234 if (!tb[NL80211_ATTR_STA_INFO]) { 7235 wpa_printf(MSG_DEBUG, "sta stats missing!"); 7236 return NL_SKIP; 7237 } 7238 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 7239 tb[NL80211_ATTR_STA_INFO], 7240 stats_policy)) { 7241 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 7242 return NL_SKIP; 7243 } 7244 7245 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 7246 data->inactive_msec = 7247 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 7248 if (stats[NL80211_STA_INFO_RX_BYTES]) 7249 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 7250 if (stats[NL80211_STA_INFO_TX_BYTES]) 7251 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 7252 if (stats[NL80211_STA_INFO_RX_PACKETS]) 7253 data->rx_packets = 7254 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 7255 if (stats[NL80211_STA_INFO_TX_PACKETS]) 7256 data->tx_packets = 7257 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 7258 7259 return NL_SKIP; 7260 } 7261 7262 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, 7263 const u8 *addr) 7264 { 7265 struct i802_bss *bss = priv; 7266 struct wpa_driver_nl80211_data *drv = bss->drv; 7267 struct nl_msg *msg; 7268 7269 os_memset(data, 0, sizeof(*data)); 7270 msg = nlmsg_alloc(); 7271 if (!msg) 7272 return -ENOMEM; 7273 7274 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 7275 7276 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7277 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7278 7279 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 7280 nla_put_failure: 7281 nlmsg_free(msg); 7282 return -ENOBUFS; 7283 } 7284 7285 7286 static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 7287 int cw_min, int cw_max, int burst_time) 7288 { 7289 struct i802_bss *bss = priv; 7290 struct wpa_driver_nl80211_data *drv = bss->drv; 7291 struct nl_msg *msg; 7292 struct nlattr *txq, *params; 7293 7294 msg = nlmsg_alloc(); 7295 if (!msg) 7296 return -1; 7297 7298 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY); 7299 7300 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 7301 7302 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 7303 if (!txq) 7304 goto nla_put_failure; 7305 7306 /* We are only sending parameters for a single TXQ at a time */ 7307 params = nla_nest_start(msg, 1); 7308 if (!params) 7309 goto nla_put_failure; 7310 7311 switch (queue) { 7312 case 0: 7313 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 7314 break; 7315 case 1: 7316 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 7317 break; 7318 case 2: 7319 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 7320 break; 7321 case 3: 7322 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 7323 break; 7324 } 7325 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 7326 * 32 usec, so need to convert the value here. */ 7327 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 7328 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 7329 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 7330 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 7331 7332 nla_nest_end(msg, params); 7333 7334 nla_nest_end(msg, txq); 7335 7336 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 7337 return 0; 7338 msg = NULL; 7339 nla_put_failure: 7340 nlmsg_free(msg); 7341 return -1; 7342 } 7343 7344 7345 static int i802_set_sta_vlan(void *priv, const u8 *addr, 7346 const char *ifname, int vlan_id) 7347 { 7348 struct i802_bss *bss = priv; 7349 struct wpa_driver_nl80211_data *drv = bss->drv; 7350 struct nl_msg *msg; 7351 int ret = -ENOBUFS; 7352 7353 msg = nlmsg_alloc(); 7354 if (!msg) 7355 return -ENOMEM; 7356 7357 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION); 7358 7359 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 7360 if_nametoindex(bss->ifname)); 7361 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 7362 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 7363 if_nametoindex(ifname)); 7364 7365 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 7366 msg = NULL; 7367 if (ret < 0) { 7368 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 7369 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 7370 MAC2STR(addr), ifname, vlan_id, ret, 7371 strerror(-ret)); 7372 } 7373 nla_put_failure: 7374 nlmsg_free(msg); 7375 return ret; 7376 } 7377 7378 7379 static int i802_get_inact_sec(void *priv, const u8 *addr) 7380 { 7381 struct hostap_sta_driver_data data; 7382 int ret; 7383 7384 data.inactive_msec = (unsigned long) -1; 7385 ret = i802_read_sta_data(priv, &data, addr); 7386 if (ret || data.inactive_msec == (unsigned long) -1) 7387 return -1; 7388 return data.inactive_msec / 1000; 7389 } 7390 7391 7392 static int i802_sta_clear_stats(void *priv, const u8 *addr) 7393 { 7394 #if 0 7395 /* TODO */ 7396 #endif 7397 return 0; 7398 } 7399 7400 7401 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 7402 int reason) 7403 { 7404 struct i802_bss *bss = priv; 7405 struct ieee80211_mgmt mgmt; 7406 7407 memset(&mgmt, 0, sizeof(mgmt)); 7408 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7409 WLAN_FC_STYPE_DEAUTH); 7410 memcpy(mgmt.da, addr, ETH_ALEN); 7411 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7412 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7413 mgmt.u.deauth.reason_code = host_to_le16(reason); 7414 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7415 IEEE80211_HDRLEN + 7416 sizeof(mgmt.u.deauth), 0); 7417 } 7418 7419 7420 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 7421 int reason) 7422 { 7423 struct i802_bss *bss = priv; 7424 struct ieee80211_mgmt mgmt; 7425 7426 memset(&mgmt, 0, sizeof(mgmt)); 7427 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 7428 WLAN_FC_STYPE_DISASSOC); 7429 memcpy(mgmt.da, addr, ETH_ALEN); 7430 memcpy(mgmt.sa, own_addr, ETH_ALEN); 7431 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 7432 mgmt.u.disassoc.reason_code = host_to_le16(reason); 7433 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 7434 IEEE80211_HDRLEN + 7435 sizeof(mgmt.u.disassoc), 0); 7436 } 7437 7438 #endif /* HOSTAPD || CONFIG_AP */ 7439 7440 #ifdef HOSTAPD 7441 7442 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7443 { 7444 int i; 7445 int *old; 7446 7447 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 7448 ifidx); 7449 for (i = 0; i < drv->num_if_indices; i++) { 7450 if (drv->if_indices[i] == 0) { 7451 drv->if_indices[i] = ifidx; 7452 return; 7453 } 7454 } 7455 7456 if (drv->if_indices != drv->default_if_indices) 7457 old = drv->if_indices; 7458 else 7459 old = NULL; 7460 7461 drv->if_indices = os_realloc(old, 7462 sizeof(int) * (drv->num_if_indices + 1)); 7463 if (!drv->if_indices) { 7464 if (!old) 7465 drv->if_indices = drv->default_if_indices; 7466 else 7467 drv->if_indices = old; 7468 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 7469 "interfaces"); 7470 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 7471 return; 7472 } else if (!old) 7473 os_memcpy(drv->if_indices, drv->default_if_indices, 7474 sizeof(drv->default_if_indices)); 7475 drv->if_indices[drv->num_if_indices] = ifidx; 7476 drv->num_if_indices++; 7477 } 7478 7479 7480 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7481 { 7482 int i; 7483 7484 for (i = 0; i < drv->num_if_indices; i++) { 7485 if (drv->if_indices[i] == ifidx) { 7486 drv->if_indices[i] = 0; 7487 break; 7488 } 7489 } 7490 } 7491 7492 7493 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 7494 { 7495 int i; 7496 7497 for (i = 0; i < drv->num_if_indices; i++) 7498 if (drv->if_indices[i] == ifidx) 7499 return 1; 7500 7501 return 0; 7502 } 7503 7504 7505 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 7506 const char *bridge_ifname) 7507 { 7508 struct i802_bss *bss = priv; 7509 struct wpa_driver_nl80211_data *drv = bss->drv; 7510 char name[IFNAMSIZ + 1]; 7511 7512 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 7513 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 7514 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 7515 if (val) { 7516 if (!if_nametoindex(name)) { 7517 if (nl80211_create_iface(drv, name, 7518 NL80211_IFTYPE_AP_VLAN, 7519 NULL, 1) < 0) 7520 return -1; 7521 if (bridge_ifname && 7522 linux_br_add_if(drv->global->ioctl_sock, 7523 bridge_ifname, name) < 0) 7524 return -1; 7525 } 7526 linux_set_iface_flags(drv->global->ioctl_sock, name, 1); 7527 return i802_set_sta_vlan(priv, addr, name, 0); 7528 } else { 7529 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 7530 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 7531 name); 7532 } 7533 } 7534 7535 7536 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 7537 { 7538 struct wpa_driver_nl80211_data *drv = eloop_ctx; 7539 struct sockaddr_ll lladdr; 7540 unsigned char buf[3000]; 7541 int len; 7542 socklen_t fromlen = sizeof(lladdr); 7543 7544 len = recvfrom(sock, buf, sizeof(buf), 0, 7545 (struct sockaddr *)&lladdr, &fromlen); 7546 if (len < 0) { 7547 perror("recv"); 7548 return; 7549 } 7550 7551 if (have_ifidx(drv, lladdr.sll_ifindex)) 7552 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 7553 } 7554 7555 7556 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 7557 struct i802_bss *bss, 7558 const char *brname, const char *ifname) 7559 { 7560 int ifindex; 7561 char in_br[IFNAMSIZ]; 7562 7563 os_strlcpy(bss->brname, brname, IFNAMSIZ); 7564 ifindex = if_nametoindex(brname); 7565 if (ifindex == 0) { 7566 /* 7567 * Bridge was configured, but the bridge device does 7568 * not exist. Try to add it now. 7569 */ 7570 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) { 7571 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 7572 "bridge interface %s: %s", 7573 brname, strerror(errno)); 7574 return -1; 7575 } 7576 bss->added_bridge = 1; 7577 add_ifidx(drv, if_nametoindex(brname)); 7578 } 7579 7580 if (linux_br_get(in_br, ifname) == 0) { 7581 if (os_strcmp(in_br, brname) == 0) 7582 return 0; /* already in the bridge */ 7583 7584 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 7585 "bridge %s", ifname, in_br); 7586 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) < 7587 0) { 7588 wpa_printf(MSG_ERROR, "nl80211: Failed to " 7589 "remove interface %s from bridge " 7590 "%s: %s", 7591 ifname, brname, strerror(errno)); 7592 return -1; 7593 } 7594 } 7595 7596 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 7597 ifname, brname); 7598 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) { 7599 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 7600 "into bridge %s: %s", 7601 ifname, brname, strerror(errno)); 7602 return -1; 7603 } 7604 bss->added_if_into_bridge = 1; 7605 7606 return 0; 7607 } 7608 7609 7610 static void *i802_init(struct hostapd_data *hapd, 7611 struct wpa_init_params *params) 7612 { 7613 struct wpa_driver_nl80211_data *drv; 7614 struct i802_bss *bss; 7615 size_t i; 7616 char brname[IFNAMSIZ]; 7617 int ifindex, br_ifindex; 7618 int br_added = 0; 7619 7620 bss = wpa_driver_nl80211_init(hapd, params->ifname, 7621 params->global_priv); 7622 if (bss == NULL) 7623 return NULL; 7624 7625 drv = bss->drv; 7626 drv->nlmode = NL80211_IFTYPE_AP; 7627 drv->eapol_sock = -1; 7628 7629 if (linux_br_get(brname, params->ifname) == 0) { 7630 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 7631 params->ifname, brname); 7632 br_ifindex = if_nametoindex(brname); 7633 } else { 7634 brname[0] = '\0'; 7635 br_ifindex = 0; 7636 } 7637 7638 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 7639 drv->if_indices = drv->default_if_indices; 7640 for (i = 0; i < params->num_bridge; i++) { 7641 if (params->bridge[i]) { 7642 ifindex = if_nametoindex(params->bridge[i]); 7643 if (ifindex) 7644 add_ifidx(drv, ifindex); 7645 if (ifindex == br_ifindex) 7646 br_added = 1; 7647 } 7648 } 7649 if (!br_added && br_ifindex && 7650 (params->num_bridge == 0 || !params->bridge[0])) 7651 add_ifidx(drv, br_ifindex); 7652 7653 /* start listening for EAPOL on the default AP interface */ 7654 add_ifidx(drv, drv->ifindex); 7655 7656 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0)) 7657 goto failed; 7658 7659 if (params->bssid) { 7660 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7661 params->bssid)) 7662 goto failed; 7663 } 7664 7665 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) { 7666 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 7667 "into AP mode", bss->ifname); 7668 goto failed; 7669 } 7670 7671 if (params->num_bridge && params->bridge[0] && 7672 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 7673 goto failed; 7674 7675 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) 7676 goto failed; 7677 7678 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 7679 if (drv->eapol_sock < 0) { 7680 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 7681 goto failed; 7682 } 7683 7684 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 7685 { 7686 printf("Could not register read socket for eapol\n"); 7687 goto failed; 7688 } 7689 7690 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7691 params->own_addr)) 7692 goto failed; 7693 7694 memcpy(bss->addr, params->own_addr, ETH_ALEN); 7695 7696 return bss; 7697 7698 failed: 7699 wpa_driver_nl80211_deinit(bss); 7700 return NULL; 7701 } 7702 7703 7704 static void i802_deinit(void *priv) 7705 { 7706 wpa_driver_nl80211_deinit(priv); 7707 } 7708 7709 #endif /* HOSTAPD */ 7710 7711 7712 static enum nl80211_iftype wpa_driver_nl80211_if_type( 7713 enum wpa_driver_if_type type) 7714 { 7715 switch (type) { 7716 case WPA_IF_STATION: 7717 return NL80211_IFTYPE_STATION; 7718 case WPA_IF_P2P_CLIENT: 7719 case WPA_IF_P2P_GROUP: 7720 return NL80211_IFTYPE_P2P_CLIENT; 7721 case WPA_IF_AP_VLAN: 7722 return NL80211_IFTYPE_AP_VLAN; 7723 case WPA_IF_AP_BSS: 7724 return NL80211_IFTYPE_AP; 7725 case WPA_IF_P2P_GO: 7726 return NL80211_IFTYPE_P2P_GO; 7727 } 7728 return -1; 7729 } 7730 7731 7732 #ifdef CONFIG_P2P 7733 7734 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 7735 { 7736 struct wpa_driver_nl80211_data *drv; 7737 dl_list_for_each(drv, &global->interfaces, 7738 struct wpa_driver_nl80211_data, list) { 7739 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0) 7740 return 1; 7741 } 7742 return 0; 7743 } 7744 7745 7746 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 7747 u8 *new_addr) 7748 { 7749 unsigned int idx; 7750 7751 if (!drv->global) 7752 return -1; 7753 7754 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN); 7755 for (idx = 0; idx < 64; idx++) { 7756 new_addr[0] = drv->first_bss.addr[0] | 0x02; 7757 new_addr[0] ^= idx << 2; 7758 if (!nl80211_addr_in_use(drv->global, new_addr)) 7759 break; 7760 } 7761 if (idx == 64) 7762 return -1; 7763 7764 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 7765 MACSTR, MAC2STR(new_addr)); 7766 7767 return 0; 7768 } 7769 7770 #endif /* CONFIG_P2P */ 7771 7772 7773 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 7774 const char *ifname, const u8 *addr, 7775 void *bss_ctx, void **drv_priv, 7776 char *force_ifname, u8 *if_addr, 7777 const char *bridge) 7778 { 7779 struct i802_bss *bss = priv; 7780 struct wpa_driver_nl80211_data *drv = bss->drv; 7781 int ifidx; 7782 #ifdef HOSTAPD 7783 struct i802_bss *new_bss = NULL; 7784 7785 if (type == WPA_IF_AP_BSS) { 7786 new_bss = os_zalloc(sizeof(*new_bss)); 7787 if (new_bss == NULL) 7788 return -1; 7789 } 7790 #endif /* HOSTAPD */ 7791 7792 if (addr) 7793 os_memcpy(if_addr, addr, ETH_ALEN); 7794 ifidx = nl80211_create_iface(drv, ifname, 7795 wpa_driver_nl80211_if_type(type), addr, 7796 0); 7797 if (ifidx < 0) { 7798 #ifdef HOSTAPD 7799 os_free(new_bss); 7800 #endif /* HOSTAPD */ 7801 return -1; 7802 } 7803 7804 if (!addr && 7805 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7806 if_addr) < 0) { 7807 nl80211_remove_iface(drv, ifidx); 7808 return -1; 7809 } 7810 7811 #ifdef CONFIG_P2P 7812 if (!addr && 7813 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 7814 type == WPA_IF_P2P_GO)) { 7815 /* Enforce unique P2P Interface Address */ 7816 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 7817 7818 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 7819 own_addr) < 0 || 7820 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname, 7821 new_addr) < 0) { 7822 nl80211_remove_iface(drv, ifidx); 7823 return -1; 7824 } 7825 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 7826 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 7827 "for P2P group interface"); 7828 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 7829 nl80211_remove_iface(drv, ifidx); 7830 return -1; 7831 } 7832 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, 7833 new_addr) < 0) { 7834 nl80211_remove_iface(drv, ifidx); 7835 return -1; 7836 } 7837 } 7838 os_memcpy(if_addr, new_addr, ETH_ALEN); 7839 } 7840 #endif /* CONFIG_P2P */ 7841 7842 #ifdef HOSTAPD 7843 if (bridge && 7844 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 7845 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 7846 "interface %s to a bridge %s", ifname, bridge); 7847 nl80211_remove_iface(drv, ifidx); 7848 os_free(new_bss); 7849 return -1; 7850 } 7851 7852 if (type == WPA_IF_AP_BSS) { 7853 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1)) 7854 { 7855 nl80211_remove_iface(drv, ifidx); 7856 os_free(new_bss); 7857 return -1; 7858 } 7859 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 7860 os_memcpy(new_bss->addr, if_addr, ETH_ALEN); 7861 new_bss->ifindex = ifidx; 7862 new_bss->drv = drv; 7863 new_bss->next = drv->first_bss.next; 7864 new_bss->freq = drv->first_bss.freq; 7865 drv->first_bss.next = new_bss; 7866 if (drv_priv) 7867 *drv_priv = new_bss; 7868 nl80211_init_bss(new_bss); 7869 7870 /* Subscribe management frames for this WPA_IF_AP_BSS */ 7871 if (nl80211_setup_ap(new_bss)) 7872 return -1; 7873 } 7874 #endif /* HOSTAPD */ 7875 7876 if (drv->global) 7877 drv->global->if_add_ifindex = ifidx; 7878 7879 return 0; 7880 } 7881 7882 7883 static int wpa_driver_nl80211_if_remove(void *priv, 7884 enum wpa_driver_if_type type, 7885 const char *ifname) 7886 { 7887 struct i802_bss *bss = priv; 7888 struct wpa_driver_nl80211_data *drv = bss->drv; 7889 int ifindex = if_nametoindex(ifname); 7890 7891 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 7892 __func__, type, ifname, ifindex); 7893 if (ifindex <= 0) 7894 return -1; 7895 7896 #ifdef HOSTAPD 7897 if (bss->added_if_into_bridge) { 7898 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 7899 bss->ifname) < 0) 7900 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 7901 "interface %s from bridge %s: %s", 7902 bss->ifname, bss->brname, strerror(errno)); 7903 } 7904 if (bss->added_bridge) { 7905 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 7906 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 7907 "bridge %s: %s", 7908 bss->brname, strerror(errno)); 7909 } 7910 #endif /* HOSTAPD */ 7911 7912 nl80211_remove_iface(drv, ifindex); 7913 7914 #ifdef HOSTAPD 7915 if (type != WPA_IF_AP_BSS) 7916 return 0; 7917 7918 if (bss != &drv->first_bss) { 7919 struct i802_bss *tbss; 7920 7921 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 7922 if (tbss->next == bss) { 7923 tbss->next = bss->next; 7924 /* Unsubscribe management frames */ 7925 nl80211_teardown_ap(bss); 7926 nl80211_destroy_bss(bss); 7927 os_free(bss); 7928 bss = NULL; 7929 break; 7930 } 7931 } 7932 if (bss) 7933 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 7934 "BSS %p in the list", __func__, bss); 7935 } 7936 #endif /* HOSTAPD */ 7937 7938 return 0; 7939 } 7940 7941 7942 static int cookie_handler(struct nl_msg *msg, void *arg) 7943 { 7944 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 7945 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 7946 u64 *cookie = arg; 7947 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 7948 genlmsg_attrlen(gnlh, 0), NULL); 7949 if (tb[NL80211_ATTR_COOKIE]) 7950 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 7951 return NL_SKIP; 7952 } 7953 7954 7955 static int nl80211_send_frame_cmd(struct i802_bss *bss, 7956 unsigned int freq, unsigned int wait, 7957 const u8 *buf, size_t buf_len, 7958 u64 *cookie_out, int no_cck, int no_ack, 7959 int offchanok) 7960 { 7961 struct wpa_driver_nl80211_data *drv = bss->drv; 7962 struct nl_msg *msg; 7963 u64 cookie; 7964 int ret = -1; 7965 7966 msg = nlmsg_alloc(); 7967 if (!msg) 7968 return -1; 7969 7970 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME); 7971 7972 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 7973 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 7974 #ifndef ANDROID_P2P 7975 if (wait) 7976 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 7977 #endif 7978 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 7979 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 7980 if (no_cck) 7981 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 7982 if (no_ack) 7983 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK); 7984 7985 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 7986 7987 cookie = 0; 7988 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 7989 msg = NULL; 7990 if (ret) { 7991 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 7992 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 7993 freq, wait); 7994 goto nla_put_failure; 7995 } 7996 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; " 7997 "cookie 0x%llx", no_ack ? " (no ACK)" : "", 7998 (long long unsigned int) cookie); 7999 8000 if (cookie_out) 8001 *cookie_out = no_ack ? (u64) -1 : cookie; 8002 8003 nla_put_failure: 8004 nlmsg_free(msg); 8005 return ret; 8006 } 8007 8008 8009 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, 8010 unsigned int wait_time, 8011 const u8 *dst, const u8 *src, 8012 const u8 *bssid, 8013 const u8 *data, size_t data_len, 8014 int no_cck) 8015 { 8016 struct i802_bss *bss = priv; 8017 struct wpa_driver_nl80211_data *drv = bss->drv; 8018 int ret = -1; 8019 u8 *buf; 8020 struct ieee80211_hdr *hdr; 8021 8022 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 8023 "freq=%u MHz wait=%d ms no_cck=%d)", 8024 drv->ifindex, freq, wait_time, no_cck); 8025 8026 buf = os_zalloc(24 + data_len); 8027 if (buf == NULL) 8028 return ret; 8029 os_memcpy(buf + 24, data, data_len); 8030 hdr = (struct ieee80211_hdr *) buf; 8031 hdr->frame_control = 8032 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 8033 os_memcpy(hdr->addr1, dst, ETH_ALEN); 8034 os_memcpy(hdr->addr2, src, ETH_ALEN); 8035 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 8036 8037 if (is_ap_interface(drv->nlmode)) 8038 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf, 8039 24 + data_len, 8040 0, freq, no_cck, 1, 8041 wait_time); 8042 else 8043 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf, 8044 24 + data_len, 8045 &drv->send_action_cookie, 8046 no_cck, 0, 1); 8047 8048 os_free(buf); 8049 return ret; 8050 } 8051 8052 8053 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 8054 { 8055 struct i802_bss *bss = priv; 8056 struct wpa_driver_nl80211_data *drv = bss->drv; 8057 struct nl_msg *msg; 8058 int ret; 8059 8060 msg = nlmsg_alloc(); 8061 if (!msg) 8062 return; 8063 8064 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL); 8065 8066 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8067 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 8068 8069 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8070 msg = NULL; 8071 if (ret) 8072 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 8073 "(%s)", ret, strerror(-ret)); 8074 8075 nla_put_failure: 8076 nlmsg_free(msg); 8077 } 8078 8079 8080 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 8081 unsigned int duration) 8082 { 8083 struct i802_bss *bss = priv; 8084 struct wpa_driver_nl80211_data *drv = bss->drv; 8085 struct nl_msg *msg; 8086 int ret; 8087 u64 cookie; 8088 8089 msg = nlmsg_alloc(); 8090 if (!msg) 8091 return -1; 8092 8093 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL); 8094 8095 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8096 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 8097 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 8098 8099 cookie = 0; 8100 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 8101 msg = NULL; 8102 if (ret == 0) { 8103 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 8104 "0x%llx for freq=%u MHz duration=%u", 8105 (long long unsigned int) cookie, freq, duration); 8106 drv->remain_on_chan_cookie = cookie; 8107 drv->pending_remain_on_chan = 1; 8108 return 0; 8109 } 8110 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 8111 "(freq=%d duration=%u): %d (%s)", 8112 freq, duration, ret, strerror(-ret)); 8113 nla_put_failure: 8114 nlmsg_free(msg); 8115 return -1; 8116 } 8117 8118 8119 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 8120 { 8121 struct i802_bss *bss = priv; 8122 struct wpa_driver_nl80211_data *drv = bss->drv; 8123 struct nl_msg *msg; 8124 int ret; 8125 8126 if (!drv->pending_remain_on_chan) { 8127 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 8128 "to cancel"); 8129 return -1; 8130 } 8131 8132 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 8133 "0x%llx", 8134 (long long unsigned int) drv->remain_on_chan_cookie); 8135 8136 msg = nlmsg_alloc(); 8137 if (!msg) 8138 return -1; 8139 8140 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL); 8141 8142 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8143 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 8144 8145 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8146 msg = NULL; 8147 if (ret == 0) 8148 return 0; 8149 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 8150 "%d (%s)", ret, strerror(-ret)); 8151 nla_put_failure: 8152 nlmsg_free(msg); 8153 return -1; 8154 } 8155 8156 8157 static int wpa_driver_nl80211_probe_req_report(void *priv, int report) 8158 { 8159 struct i802_bss *bss = priv; 8160 struct wpa_driver_nl80211_data *drv = bss->drv; 8161 8162 if (!report) { 8163 if (bss->nl_preq && drv->device_ap_sme && 8164 is_ap_interface(drv->nlmode)) { 8165 /* 8166 * Do not disable Probe Request reporting that was 8167 * enabled in nl80211_setup_ap(). 8168 */ 8169 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of " 8170 "Probe Request reporting nl_preq=%p while " 8171 "in AP mode", bss->nl_preq); 8172 } else if (bss->nl_preq) { 8173 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request " 8174 "reporting nl_preq=%p", bss->nl_preq); 8175 eloop_unregister_read_sock( 8176 nl_socket_get_fd(bss->nl_preq)); 8177 nl_destroy_handles(&bss->nl_preq); 8178 } 8179 return 0; 8180 } 8181 8182 if (bss->nl_preq) { 8183 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 8184 "already on! nl_preq=%p", bss->nl_preq); 8185 return 0; 8186 } 8187 8188 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq"); 8189 if (bss->nl_preq == NULL) 8190 return -1; 8191 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request " 8192 "reporting nl_preq=%p", bss->nl_preq); 8193 8194 if (nl80211_register_frame(bss, bss->nl_preq, 8195 (WLAN_FC_TYPE_MGMT << 2) | 8196 (WLAN_FC_STYPE_PROBE_REQ << 4), 8197 NULL, 0) < 0) 8198 goto out_err; 8199 8200 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq), 8201 wpa_driver_nl80211_event_receive, bss->nl_cb, 8202 bss->nl_preq); 8203 8204 return 0; 8205 8206 out_err: 8207 nl_destroy_handles(&bss->nl_preq); 8208 return -1; 8209 } 8210 8211 8212 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 8213 int ifindex, int disabled) 8214 { 8215 struct nl_msg *msg; 8216 struct nlattr *bands, *band; 8217 int ret; 8218 8219 msg = nlmsg_alloc(); 8220 if (!msg) 8221 return -1; 8222 8223 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK); 8224 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 8225 8226 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 8227 if (!bands) 8228 goto nla_put_failure; 8229 8230 /* 8231 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 8232 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 8233 * rates. All 5 GHz rates are left enabled. 8234 */ 8235 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 8236 if (!band) 8237 goto nla_put_failure; 8238 if (disabled) { 8239 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 8240 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 8241 } 8242 nla_nest_end(msg, band); 8243 8244 nla_nest_end(msg, bands); 8245 8246 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 8247 msg = NULL; 8248 if (ret) { 8249 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 8250 "(%s)", ret, strerror(-ret)); 8251 } 8252 8253 return ret; 8254 8255 nla_put_failure: 8256 nlmsg_free(msg); 8257 return -1; 8258 } 8259 8260 8261 static int wpa_driver_nl80211_deinit_ap(void *priv) 8262 { 8263 struct i802_bss *bss = priv; 8264 struct wpa_driver_nl80211_data *drv = bss->drv; 8265 if (!is_ap_interface(drv->nlmode)) 8266 return -1; 8267 wpa_driver_nl80211_del_beacon(drv); 8268 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION); 8269 } 8270 8271 8272 static void wpa_driver_nl80211_resume(void *priv) 8273 { 8274 struct i802_bss *bss = priv; 8275 struct wpa_driver_nl80211_data *drv = bss->drv; 8276 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) { 8277 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 8278 "resume event"); 8279 } 8280 } 8281 8282 8283 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 8284 const u8 *ies, size_t ies_len) 8285 { 8286 struct i802_bss *bss = priv; 8287 struct wpa_driver_nl80211_data *drv = bss->drv; 8288 int ret; 8289 u8 *data, *pos; 8290 size_t data_len; 8291 const u8 *own_addr = bss->addr; 8292 8293 if (action != 1) { 8294 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 8295 "action %d", action); 8296 return -1; 8297 } 8298 8299 /* 8300 * Action frame payload: 8301 * Category[1] = 6 (Fast BSS Transition) 8302 * Action[1] = 1 (Fast BSS Transition Request) 8303 * STA Address 8304 * Target AP Address 8305 * FT IEs 8306 */ 8307 8308 data_len = 2 + 2 * ETH_ALEN + ies_len; 8309 data = os_malloc(data_len); 8310 if (data == NULL) 8311 return -1; 8312 pos = data; 8313 *pos++ = 0x06; /* FT Action category */ 8314 *pos++ = action; 8315 os_memcpy(pos, own_addr, ETH_ALEN); 8316 pos += ETH_ALEN; 8317 os_memcpy(pos, target_ap, ETH_ALEN); 8318 pos += ETH_ALEN; 8319 os_memcpy(pos, ies, ies_len); 8320 8321 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 8322 drv->bssid, own_addr, drv->bssid, 8323 data, data_len, 0); 8324 os_free(data); 8325 8326 return ret; 8327 } 8328 8329 8330 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 8331 { 8332 struct i802_bss *bss = priv; 8333 struct wpa_driver_nl80211_data *drv = bss->drv; 8334 struct nl_msg *msg, *cqm = NULL; 8335 8336 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 8337 "hysteresis=%d", threshold, hysteresis); 8338 8339 msg = nlmsg_alloc(); 8340 if (!msg) 8341 return -1; 8342 8343 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM); 8344 8345 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8346 8347 cqm = nlmsg_alloc(); 8348 if (cqm == NULL) 8349 return -1; 8350 8351 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 8352 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 8353 nla_put_nested(msg, NL80211_ATTR_CQM, cqm); 8354 8355 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 8356 return 0; 8357 msg = NULL; 8358 8359 nla_put_failure: 8360 nlmsg_free(cqm); 8361 nlmsg_free(msg); 8362 return -1; 8363 } 8364 8365 8366 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 8367 { 8368 struct i802_bss *bss = priv; 8369 struct wpa_driver_nl80211_data *drv = bss->drv; 8370 int res; 8371 8372 os_memset(si, 0, sizeof(*si)); 8373 res = nl80211_get_link_signal(drv, si); 8374 if (res != 0) 8375 return res; 8376 8377 return nl80211_get_link_noise(drv, si); 8378 } 8379 8380 8381 static int wpa_driver_nl80211_shared_freq(void *priv) 8382 { 8383 struct i802_bss *bss = priv; 8384 struct wpa_driver_nl80211_data *drv = bss->drv; 8385 struct wpa_driver_nl80211_data *driver; 8386 int freq = 0; 8387 8388 /* 8389 * If the same PHY is in connected state with some other interface, 8390 * then retrieve the assoc freq. 8391 */ 8392 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s", 8393 drv->phyname); 8394 8395 dl_list_for_each(driver, &drv->global->interfaces, 8396 struct wpa_driver_nl80211_data, list) { 8397 if (drv == driver || 8398 os_strcmp(drv->phyname, driver->phyname) != 0 || 8399 #ifdef ANDROID_P2P 8400 (!driver->associated && !is_ap_interface(driver->nlmode))) 8401 #else 8402 !driver->associated) 8403 #endif 8404 continue; 8405 8406 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s " 8407 MACSTR, 8408 driver->phyname, driver->first_bss.ifname, 8409 MAC2STR(driver->first_bss.addr)); 8410 #ifdef ANDROID_P2P 8411 if(is_ap_interface(driver->nlmode)) 8412 freq = driver->first_bss.freq; 8413 else 8414 #endif 8415 freq = nl80211_get_assoc_freq(driver); 8416 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d", 8417 drv->phyname, freq); 8418 } 8419 8420 if (!freq) 8421 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for " 8422 "PHY (%s) in associated state", drv->phyname); 8423 8424 return freq; 8425 } 8426 8427 8428 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 8429 int encrypt) 8430 { 8431 struct i802_bss *bss = priv; 8432 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0, 8433 0, 0, 0, 0); 8434 } 8435 8436 8437 static int nl80211_set_param(void *priv, const char *param) 8438 { 8439 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 8440 if (param == NULL) 8441 return 0; 8442 8443 #ifdef CONFIG_P2P 8444 if (os_strstr(param, "use_p2p_group_interface=1")) { 8445 struct i802_bss *bss = priv; 8446 struct wpa_driver_nl80211_data *drv = bss->drv; 8447 8448 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 8449 "interface"); 8450 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 8451 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 8452 } 8453 #ifdef ANDROID_P2P 8454 if(os_strstr(param, "use_multi_chan_concurrent=1")) { 8455 struct i802_bss *bss = priv; 8456 struct wpa_driver_nl80211_data *drv = bss->drv; 8457 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel " 8458 "concurrency"); 8459 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT; 8460 } 8461 #endif 8462 #endif /* CONFIG_P2P */ 8463 8464 return 0; 8465 } 8466 8467 8468 static void * nl80211_global_init(void) 8469 { 8470 struct nl80211_global *global; 8471 struct netlink_config *cfg; 8472 8473 global = os_zalloc(sizeof(*global)); 8474 if (global == NULL) 8475 return NULL; 8476 global->ioctl_sock = -1; 8477 dl_list_init(&global->interfaces); 8478 global->if_add_ifindex = -1; 8479 8480 cfg = os_zalloc(sizeof(*cfg)); 8481 if (cfg == NULL) 8482 goto err; 8483 8484 cfg->ctx = global; 8485 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 8486 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 8487 global->netlink = netlink_init(cfg); 8488 if (global->netlink == NULL) { 8489 os_free(cfg); 8490 goto err; 8491 } 8492 8493 if (wpa_driver_nl80211_init_nl_global(global) < 0) 8494 goto err; 8495 8496 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 8497 if (global->ioctl_sock < 0) { 8498 perror("socket(PF_INET,SOCK_DGRAM)"); 8499 goto err; 8500 } 8501 8502 return global; 8503 8504 err: 8505 nl80211_global_deinit(global); 8506 return NULL; 8507 } 8508 8509 8510 static void nl80211_global_deinit(void *priv) 8511 { 8512 struct nl80211_global *global = priv; 8513 if (global == NULL) 8514 return; 8515 if (!dl_list_empty(&global->interfaces)) { 8516 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 8517 "nl80211_global_deinit", 8518 dl_list_len(&global->interfaces)); 8519 } 8520 8521 if (global->netlink) 8522 netlink_deinit(global->netlink); 8523 8524 nl_destroy_handles(&global->nl); 8525 8526 if (global->nl_event) { 8527 eloop_unregister_read_sock( 8528 nl_socket_get_fd(global->nl_event)); 8529 nl_destroy_handles(&global->nl_event); 8530 } 8531 8532 nl_cb_put(global->nl_cb); 8533 8534 if (global->ioctl_sock >= 0) 8535 close(global->ioctl_sock); 8536 8537 os_free(global); 8538 } 8539 8540 8541 static const char * nl80211_get_radio_name(void *priv) 8542 { 8543 struct i802_bss *bss = priv; 8544 struct wpa_driver_nl80211_data *drv = bss->drv; 8545 return drv->phyname; 8546 } 8547 8548 8549 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 8550 const u8 *pmkid) 8551 { 8552 struct nl_msg *msg; 8553 8554 msg = nlmsg_alloc(); 8555 if (!msg) 8556 return -ENOMEM; 8557 8558 nl80211_cmd(bss->drv, msg, 0, cmd); 8559 8560 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 8561 if (pmkid) 8562 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 8563 if (bssid) 8564 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 8565 8566 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8567 nla_put_failure: 8568 nlmsg_free(msg); 8569 return -ENOBUFS; 8570 } 8571 8572 8573 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8574 { 8575 struct i802_bss *bss = priv; 8576 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 8577 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 8578 } 8579 8580 8581 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 8582 { 8583 struct i802_bss *bss = priv; 8584 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 8585 MAC2STR(bssid)); 8586 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 8587 } 8588 8589 8590 static int nl80211_flush_pmkid(void *priv) 8591 { 8592 struct i802_bss *bss = priv; 8593 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 8594 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 8595 } 8596 8597 8598 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck, 8599 const u8 *replay_ctr) 8600 { 8601 struct i802_bss *bss = priv; 8602 struct wpa_driver_nl80211_data *drv = bss->drv; 8603 struct nlattr *replay_nested; 8604 struct nl_msg *msg; 8605 8606 msg = nlmsg_alloc(); 8607 if (!msg) 8608 return; 8609 8610 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 8611 8612 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8613 8614 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 8615 if (!replay_nested) 8616 goto nla_put_failure; 8617 8618 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek); 8619 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck); 8620 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN, 8621 replay_ctr); 8622 8623 nla_nest_end(msg, replay_nested); 8624 8625 send_and_recv_msgs(drv, msg, NULL, NULL); 8626 return; 8627 nla_put_failure: 8628 nlmsg_free(msg); 8629 } 8630 8631 8632 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr, 8633 const u8 *addr, int qos) 8634 { 8635 /* send data frame to poll STA and check whether 8636 * this frame is ACKed */ 8637 struct { 8638 struct ieee80211_hdr hdr; 8639 u16 qos_ctl; 8640 } STRUCT_PACKED nulldata; 8641 size_t size; 8642 8643 /* Send data frame to poll STA and check whether this frame is ACKed */ 8644 8645 os_memset(&nulldata, 0, sizeof(nulldata)); 8646 8647 if (qos) { 8648 nulldata.hdr.frame_control = 8649 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8650 WLAN_FC_STYPE_QOS_NULL); 8651 size = sizeof(nulldata); 8652 } else { 8653 nulldata.hdr.frame_control = 8654 IEEE80211_FC(WLAN_FC_TYPE_DATA, 8655 WLAN_FC_STYPE_NULLFUNC); 8656 size = sizeof(struct ieee80211_hdr); 8657 } 8658 8659 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS); 8660 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 8661 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 8662 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 8663 8664 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0) 8665 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to " 8666 "send poll frame"); 8667 } 8668 8669 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr, 8670 int qos) 8671 { 8672 struct i802_bss *bss = priv; 8673 struct wpa_driver_nl80211_data *drv = bss->drv; 8674 struct nl_msg *msg; 8675 8676 if (!drv->poll_command_supported) { 8677 nl80211_send_null_frame(bss, own_addr, addr, qos); 8678 return; 8679 } 8680 8681 msg = nlmsg_alloc(); 8682 if (!msg) 8683 return; 8684 8685 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT); 8686 8687 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8688 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 8689 8690 send_and_recv_msgs(drv, msg, NULL, NULL); 8691 return; 8692 nla_put_failure: 8693 nlmsg_free(msg); 8694 } 8695 8696 8697 static int nl80211_set_power_save(struct i802_bss *bss, int enabled) 8698 { 8699 struct nl_msg *msg; 8700 8701 msg = nlmsg_alloc(); 8702 if (!msg) 8703 return -ENOMEM; 8704 8705 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE); 8706 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 8707 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, 8708 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); 8709 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 8710 nla_put_failure: 8711 nlmsg_free(msg); 8712 return -ENOBUFS; 8713 } 8714 8715 8716 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps, 8717 int ctwindow) 8718 { 8719 struct i802_bss *bss = priv; 8720 8721 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d " 8722 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow); 8723 8724 if (opp_ps != -1 || ctwindow != -1) 8725 #ifdef ANDROID_P2P 8726 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow); 8727 #else 8728 return -1; /* Not yet supported */ 8729 #endif 8730 8731 if (legacy_ps == -1) 8732 return 0; 8733 if (legacy_ps != 0 && legacy_ps != 1) 8734 return -1; /* Not yet supported */ 8735 8736 return nl80211_set_power_save(bss, legacy_ps); 8737 } 8738 8739 8740 #ifdef CONFIG_TDLS 8741 8742 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code, 8743 u8 dialog_token, u16 status_code, 8744 const u8 *buf, size_t len) 8745 { 8746 struct i802_bss *bss = priv; 8747 struct wpa_driver_nl80211_data *drv = bss->drv; 8748 struct nl_msg *msg; 8749 8750 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8751 return -EOPNOTSUPP; 8752 8753 if (!dst) 8754 return -EINVAL; 8755 8756 msg = nlmsg_alloc(); 8757 if (!msg) 8758 return -ENOMEM; 8759 8760 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT); 8761 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8762 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); 8763 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code); 8764 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token); 8765 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code); 8766 NLA_PUT(msg, NL80211_ATTR_IE, len, buf); 8767 8768 return send_and_recv_msgs(drv, msg, NULL, NULL); 8769 8770 nla_put_failure: 8771 nlmsg_free(msg); 8772 return -ENOBUFS; 8773 } 8774 8775 8776 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer) 8777 { 8778 struct i802_bss *bss = priv; 8779 struct wpa_driver_nl80211_data *drv = bss->drv; 8780 struct nl_msg *msg; 8781 enum nl80211_tdls_operation nl80211_oper; 8782 8783 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) 8784 return -EOPNOTSUPP; 8785 8786 switch (oper) { 8787 case TDLS_DISCOVERY_REQ: 8788 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ; 8789 break; 8790 case TDLS_SETUP: 8791 nl80211_oper = NL80211_TDLS_SETUP; 8792 break; 8793 case TDLS_TEARDOWN: 8794 nl80211_oper = NL80211_TDLS_TEARDOWN; 8795 break; 8796 case TDLS_ENABLE_LINK: 8797 nl80211_oper = NL80211_TDLS_ENABLE_LINK; 8798 break; 8799 case TDLS_DISABLE_LINK: 8800 nl80211_oper = NL80211_TDLS_DISABLE_LINK; 8801 break; 8802 case TDLS_ENABLE: 8803 return 0; 8804 case TDLS_DISABLE: 8805 return 0; 8806 default: 8807 return -EINVAL; 8808 } 8809 8810 msg = nlmsg_alloc(); 8811 if (!msg) 8812 return -ENOMEM; 8813 8814 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER); 8815 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper); 8816 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 8817 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer); 8818 8819 return send_and_recv_msgs(drv, msg, NULL, NULL); 8820 8821 nla_put_failure: 8822 nlmsg_free(msg); 8823 return -ENOBUFS; 8824 } 8825 8826 #endif /* CONFIG TDLS */ 8827 8828 8829 #ifdef ANDROID 8830 8831 typedef struct android_wifi_priv_cmd { 8832 char *buf; 8833 int used_len; 8834 int total_len; 8835 } android_wifi_priv_cmd; 8836 8837 static int drv_errors = 0; 8838 8839 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv) 8840 { 8841 drv_errors++; 8842 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) { 8843 drv_errors = 0; 8844 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED"); 8845 } 8846 } 8847 8848 8849 static int android_priv_cmd(struct i802_bss *bss, const char *cmd) 8850 { 8851 struct wpa_driver_nl80211_data *drv = bss->drv; 8852 struct ifreq ifr; 8853 android_wifi_priv_cmd priv_cmd; 8854 char buf[MAX_DRV_CMD_SIZE]; 8855 int ret; 8856 8857 os_memset(&ifr, 0, sizeof(ifr)); 8858 os_memset(&priv_cmd, 0, sizeof(priv_cmd)); 8859 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 8860 8861 os_memset(buf, 0, sizeof(buf)); 8862 os_strlcpy(buf, cmd, sizeof(buf)); 8863 8864 priv_cmd.buf = buf; 8865 priv_cmd.used_len = sizeof(buf); 8866 priv_cmd.total_len = sizeof(buf); 8867 ifr.ifr_data = &priv_cmd; 8868 8869 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 8870 if (ret < 0) { 8871 wpa_printf(MSG_ERROR, "%s: failed to issue private commands", 8872 __func__); 8873 wpa_driver_send_hang_msg(drv); 8874 return ret; 8875 } 8876 8877 drv_errors = 0; 8878 return 0; 8879 } 8880 8881 8882 static int android_pno_start(struct i802_bss *bss, 8883 struct wpa_driver_scan_params *params) 8884 { 8885 struct wpa_driver_nl80211_data *drv = bss->drv; 8886 struct ifreq ifr; 8887 android_wifi_priv_cmd priv_cmd; 8888 int ret = 0, i = 0, bp; 8889 char buf[WEXT_PNO_MAX_COMMAND_SIZE]; 8890 8891 bp = WEXT_PNOSETUP_HEADER_SIZE; 8892 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp); 8893 buf[bp++] = WEXT_PNO_TLV_PREFIX; 8894 buf[bp++] = WEXT_PNO_TLV_VERSION; 8895 buf[bp++] = WEXT_PNO_TLV_SUBVERSION; 8896 buf[bp++] = WEXT_PNO_TLV_RESERVED; 8897 8898 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) { 8899 /* Check that there is enough space needed for 1 more SSID, the 8900 * other sections and null termination */ 8901 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN + 8902 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf)) 8903 break; 8904 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan", 8905 params->ssids[i].ssid, 8906 params->ssids[i].ssid_len); 8907 buf[bp++] = WEXT_PNO_SSID_SECTION; 8908 buf[bp++] = params->ssids[i].ssid_len; 8909 os_memcpy(&buf[bp], params->ssids[i].ssid, 8910 params->ssids[i].ssid_len); 8911 bp += params->ssids[i].ssid_len; 8912 i++; 8913 } 8914 8915 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION; 8916 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x", 8917 WEXT_PNO_SCAN_INTERVAL); 8918 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH; 8919 8920 buf[bp++] = WEXT_PNO_REPEAT_SECTION; 8921 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x", 8922 WEXT_PNO_REPEAT); 8923 bp += WEXT_PNO_REPEAT_LENGTH; 8924 8925 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION; 8926 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x", 8927 WEXT_PNO_MAX_REPEAT); 8928 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1; 8929 8930 memset(&ifr, 0, sizeof(ifr)); 8931 memset(&priv_cmd, 0, sizeof(priv_cmd)); 8932 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ); 8933 8934 priv_cmd.buf = buf; 8935 priv_cmd.used_len = bp; 8936 priv_cmd.total_len = bp; 8937 ifr.ifr_data = &priv_cmd; 8938 8939 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr); 8940 8941 if (ret < 0) { 8942 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d", 8943 ret); 8944 wpa_driver_send_hang_msg(drv); 8945 return ret; 8946 } 8947 8948 drv_errors = 0; 8949 8950 return android_priv_cmd(bss, "PNOFORCE 1"); 8951 } 8952 8953 8954 static int android_pno_stop(struct i802_bss *bss) 8955 { 8956 return android_priv_cmd(bss, "PNOFORCE 0"); 8957 } 8958 8959 #endif /* ANDROID */ 8960 8961 8962 const struct wpa_driver_ops wpa_driver_nl80211_ops = { 8963 .name = "nl80211", 8964 .desc = "Linux nl80211/cfg80211", 8965 .get_bssid = wpa_driver_nl80211_get_bssid, 8966 .get_ssid = wpa_driver_nl80211_get_ssid, 8967 .set_key = wpa_driver_nl80211_set_key, 8968 .scan2 = wpa_driver_nl80211_scan, 8969 .sched_scan = wpa_driver_nl80211_sched_scan, 8970 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan, 8971 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 8972 .deauthenticate = wpa_driver_nl80211_deauthenticate, 8973 .disassociate = wpa_driver_nl80211_disassociate, 8974 .authenticate = wpa_driver_nl80211_authenticate, 8975 .associate = wpa_driver_nl80211_associate, 8976 .global_init = nl80211_global_init, 8977 .global_deinit = nl80211_global_deinit, 8978 .init2 = wpa_driver_nl80211_init, 8979 .deinit = wpa_driver_nl80211_deinit, 8980 .get_capa = wpa_driver_nl80211_get_capa, 8981 .set_operstate = wpa_driver_nl80211_set_operstate, 8982 .set_supp_port = wpa_driver_nl80211_set_supp_port, 8983 .set_country = wpa_driver_nl80211_set_country, 8984 .set_ap = wpa_driver_nl80211_set_ap, 8985 .if_add = wpa_driver_nl80211_if_add, 8986 .if_remove = wpa_driver_nl80211_if_remove, 8987 .send_mlme = wpa_driver_nl80211_send_mlme, 8988 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 8989 .sta_add = wpa_driver_nl80211_sta_add, 8990 .sta_remove = wpa_driver_nl80211_sta_remove, 8991 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 8992 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 8993 #ifdef HOSTAPD 8994 .hapd_init = i802_init, 8995 .hapd_deinit = i802_deinit, 8996 .set_wds_sta = i802_set_wds_sta, 8997 #endif /* HOSTAPD */ 8998 #if defined(HOSTAPD) || defined(CONFIG_AP) 8999 .get_seqnum = i802_get_seqnum, 9000 .flush = i802_flush, 9001 .read_sta_data = i802_read_sta_data, 9002 .get_inact_sec = i802_get_inact_sec, 9003 .sta_clear_stats = i802_sta_clear_stats, 9004 .set_rts = i802_set_rts, 9005 .set_frag = i802_set_frag, 9006 .set_tx_queue_params = i802_set_tx_queue_params, 9007 .set_sta_vlan = i802_set_sta_vlan, 9008 .sta_deauth = i802_sta_deauth, 9009 .sta_disassoc = i802_sta_disassoc, 9010 #endif /* HOSTAPD || CONFIG_AP */ 9011 .set_freq = i802_set_freq, 9012 .send_action = wpa_driver_nl80211_send_action, 9013 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 9014 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 9015 .cancel_remain_on_channel = 9016 wpa_driver_nl80211_cancel_remain_on_channel, 9017 .probe_req_report = wpa_driver_nl80211_probe_req_report, 9018 .deinit_ap = wpa_driver_nl80211_deinit_ap, 9019 .resume = wpa_driver_nl80211_resume, 9020 .send_ft_action = nl80211_send_ft_action, 9021 .signal_monitor = nl80211_signal_monitor, 9022 .signal_poll = nl80211_signal_poll, 9023 .send_frame = nl80211_send_frame, 9024 .shared_freq = wpa_driver_nl80211_shared_freq, 9025 .set_param = nl80211_set_param, 9026 .get_radio_name = nl80211_get_radio_name, 9027 .add_pmkid = nl80211_add_pmkid, 9028 .remove_pmkid = nl80211_remove_pmkid, 9029 .flush_pmkid = nl80211_flush_pmkid, 9030 .set_rekey_info = nl80211_set_rekey_info, 9031 .poll_client = nl80211_poll_client, 9032 .set_p2p_powersave = nl80211_set_p2p_powersave, 9033 #ifdef CONFIG_TDLS 9034 .send_tdls_mgmt = nl80211_send_tdls_mgmt, 9035 .tdls_oper = nl80211_tdls_oper, 9036 #endif /* CONFIG_TDLS */ 9037 #ifdef ANDROID_P2P 9038 .set_noa = wpa_driver_set_p2p_noa, 9039 .get_noa = wpa_driver_get_p2p_noa, 9040 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 9041 #endif 9042 #ifdef ANDROID 9043 .driver_cmd = wpa_driver_nl80211_driver_cmd, 9044 #endif 9045 }; 9046
