1 /* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2010, 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 program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 * 13 * Alternatively, this software may be distributed under the terms of BSD 14 * license. 15 * 16 * See README and COPYING for more details. 17 */ 18 19 #include "includes.h" 20 #include <sys/ioctl.h> 21 #include <sys/types.h> 22 #include <sys/stat.h> 23 #include <fcntl.h> 24 #include <net/if.h> 25 #include <netlink/genl/genl.h> 26 #include <netlink/genl/family.h> 27 #include <netlink/genl/ctrl.h> 28 #include <linux/rtnetlink.h> 29 #include <netpacket/packet.h> 30 #include <linux/filter.h> 31 #include "nl80211_copy.h" 32 33 #include "common.h" 34 #include "eloop.h" 35 #include "utils/list.h" 36 #include "common/ieee802_11_defs.h" 37 #include "netlink.h" 38 #include "linux_ioctl.h" 39 #include "radiotap.h" 40 #include "radiotap_iter.h" 41 #include "rfkill.h" 42 #include "driver.h" 43 #if defined(ANDROID_BRCM_P2P_PATCH) && !defined(HOSTAPD) 44 #include "wpa_supplicant_i.h" 45 #endif 46 #ifdef ANDROID 47 #define WPA_EVENT_DRIVER_STATE "CTRL-EVENT-DRIVER-STATE " 48 #endif 49 #ifdef CONFIG_LIBNL20 50 /* libnl 2.0 compatibility code */ 51 #define nl_handle nl_sock 52 #define nl80211_handle_alloc nl_socket_alloc_cb 53 #define nl80211_handle_destroy nl_socket_free 54 #else 55 /* 56 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 57 * but when you free a socket again it will mess up its bitmap and 58 * and use the wrong number the next time it needs a socket ID. 59 * Therefore, we wrap the handle alloc/destroy and add our own pid 60 * accounting. 61 */ 62 static uint32_t port_bitmap[32] = { 0 }; 63 64 static struct nl_handle *nl80211_handle_alloc(void *cb) 65 { 66 struct nl_handle *handle; 67 uint32_t pid = getpid() & 0x3FFFFF; 68 int i; 69 70 handle = nl_handle_alloc_cb(cb); 71 72 for (i = 0; i < 1024; i++) { 73 if (port_bitmap[i / 32] & (1 << (i % 32))) 74 continue; 75 port_bitmap[i / 32] |= 1 << (i % 32); 76 pid += i << 22; 77 break; 78 } 79 80 nl_socket_set_local_port(handle, pid); 81 82 return handle; 83 } 84 85 static void nl80211_handle_destroy(struct nl_handle *handle) 86 { 87 uint32_t port = nl_socket_get_local_port(handle); 88 89 port >>= 22; 90 port_bitmap[port / 32] &= ~(1 << (port % 32)); 91 92 nl_handle_destroy(handle); 93 } 94 #endif /* CONFIG_LIBNL20 */ 95 96 97 #ifndef IFF_LOWER_UP 98 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 99 #endif 100 #ifndef IFF_DORMANT 101 #define IFF_DORMANT 0x20000 /* driver signals dormant */ 102 #endif 103 104 #ifndef IF_OPER_DORMANT 105 #define IF_OPER_DORMANT 5 106 #endif 107 #ifndef IF_OPER_UP 108 #define IF_OPER_UP 6 109 #endif 110 111 struct nl80211_global { 112 struct dl_list interfaces; 113 }; 114 115 struct i802_bss { 116 struct wpa_driver_nl80211_data *drv; 117 struct i802_bss *next; 118 int ifindex; 119 char ifname[IFNAMSIZ + 1]; 120 char brname[IFNAMSIZ]; 121 unsigned int beacon_set:1; 122 unsigned int added_if_into_bridge:1; 123 unsigned int added_bridge:1; 124 }; 125 126 struct wpa_driver_nl80211_data { 127 struct nl80211_global *global; 128 struct dl_list list; 129 u8 addr[ETH_ALEN]; 130 char phyname[32]; 131 void *ctx; 132 struct netlink_data *netlink; 133 int ioctl_sock; /* socket for ioctl() use */ 134 int ifindex; 135 int if_removed; 136 int if_disabled; 137 struct rfkill_data *rfkill; 138 struct wpa_driver_capa capa; 139 int has_capability; 140 141 int operstate; 142 143 int scan_complete_events; 144 145 struct nl_handle *nl_handle; 146 struct nl_handle *nl_handle_event; 147 struct nl_handle *nl_handle_preq; 148 struct nl_cache *nl_cache; 149 struct nl_cache *nl_cache_event; 150 struct nl_cache *nl_cache_preq; 151 struct nl_cb *nl_cb; 152 struct genl_family *nl80211; 153 154 u8 auth_bssid[ETH_ALEN]; 155 u8 bssid[ETH_ALEN]; 156 int associated; 157 u8 ssid[32]; 158 size_t ssid_len; 159 int nlmode; 160 int ap_scan_as_station; 161 unsigned int assoc_freq; 162 163 int monitor_sock; 164 int monitor_ifidx; 165 int no_monitor_iface_capab; 166 int disable_11b_rates; 167 168 unsigned int pending_remain_on_chan:1; 169 170 u64 remain_on_chan_cookie; 171 u64 send_action_cookie; 172 173 unsigned int last_mgmt_freq; 174 unsigned int ap_oper_freq; 175 176 struct wpa_driver_scan_filter *filter_ssids; 177 size_t num_filter_ssids; 178 179 struct i802_bss first_bss; 180 181 #ifdef HOSTAPD 182 int eapol_sock; /* socket for EAPOL frames */ 183 184 int default_if_indices[16]; 185 int *if_indices; 186 int num_if_indices; 187 188 int last_freq; 189 int last_freq_ht; 190 #endif /* HOSTAPD */ 191 }; 192 193 194 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 195 void *timeout_ctx); 196 static int wpa_driver_nl80211_set_mode(void *priv, int mode); 197 static int 198 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); 199 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 200 const u8 *addr, int cmd, u16 reason_code, 201 int local_state_change); 202 static void nl80211_remove_monitor_interface( 203 struct wpa_driver_nl80211_data *drv); 204 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv, 205 unsigned int freq, unsigned int wait, 206 const u8 *buf, size_t buf_len, u64 *cookie); 207 static int wpa_driver_nl80211_probe_req_report(void *priv, int report); 208 #ifdef ANDROID_BRCM_P2P_PATCH 209 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 210 enum wpa_event_type type, 211 const u8 *frame, size_t len); 212 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 213 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 214 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 215 int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 216 const struct wpabuf *proberesp, 217 const struct wpabuf *assocresp); 218 #endif 219 220 #ifdef HOSTAPD 221 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 222 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 223 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 224 static int wpa_driver_nl80211_if_remove(void *priv, 225 enum wpa_driver_if_type type, 226 const char *ifname); 227 #else /* HOSTAPD */ 228 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 229 { 230 return 0; 231 } 232 #endif /* HOSTAPD */ 233 234 #ifdef ANDROID 235 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 236 size_t buf_len); 237 #endif 238 239 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); 240 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 241 int ifindex, int disabled); 242 243 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 244 245 246 struct nl80211_bss_info_arg { 247 struct wpa_driver_nl80211_data *drv; 248 struct wpa_scan_results *res; 249 unsigned int assoc_freq; 250 }; 251 252 static int bss_info_handler(struct nl_msg *msg, void *arg); 253 254 255 /* nl80211 code */ 256 static int ack_handler(struct nl_msg *msg, void *arg) 257 { 258 int *err = arg; 259 *err = 0; 260 return NL_STOP; 261 } 262 263 static int finish_handler(struct nl_msg *msg, void *arg) 264 { 265 int *ret = arg; 266 *ret = 0; 267 return NL_SKIP; 268 } 269 270 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 271 void *arg) 272 { 273 int *ret = arg; 274 *ret = err->error; 275 return NL_SKIP; 276 } 277 278 279 static int no_seq_check(struct nl_msg *msg, void *arg) 280 { 281 return NL_OK; 282 } 283 284 285 static int send_and_recv(struct wpa_driver_nl80211_data *drv, 286 struct nl_handle *nl_handle, struct nl_msg *msg, 287 int (*valid_handler)(struct nl_msg *, void *), 288 void *valid_data) 289 { 290 struct nl_cb *cb; 291 int err = -ENOMEM; 292 293 cb = nl_cb_clone(drv->nl_cb); 294 if (!cb) 295 goto out; 296 297 err = nl_send_auto_complete(nl_handle, msg); 298 if (err < 0) 299 goto out; 300 301 err = 1; 302 303 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 304 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 305 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 306 307 if (valid_handler) 308 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 309 valid_handler, valid_data); 310 311 while (err > 0) 312 nl_recvmsgs(nl_handle, cb); 313 out: 314 nl_cb_put(cb); 315 nlmsg_free(msg); 316 return err; 317 } 318 319 320 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 321 struct nl_msg *msg, 322 int (*valid_handler)(struct nl_msg *, void *), 323 void *valid_data) 324 { 325 return send_and_recv(drv, drv->nl_handle, msg, valid_handler, 326 valid_data); 327 } 328 329 330 struct family_data { 331 const char *group; 332 int id; 333 }; 334 335 336 static int family_handler(struct nl_msg *msg, void *arg) 337 { 338 struct family_data *res = arg; 339 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 340 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 341 struct nlattr *mcgrp; 342 int i; 343 344 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 345 genlmsg_attrlen(gnlh, 0), NULL); 346 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 347 return NL_SKIP; 348 349 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 350 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 351 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 352 nla_len(mcgrp), NULL); 353 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 354 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 355 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 356 res->group, 357 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 358 continue; 359 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 360 break; 361 }; 362 363 return NL_SKIP; 364 } 365 366 367 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv, 368 const char *family, const char *group) 369 { 370 struct nl_msg *msg; 371 int ret = -1; 372 struct family_data res = { group, -ENOENT }; 373 374 msg = nlmsg_alloc(); 375 if (!msg) 376 return -ENOMEM; 377 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"), 378 0, 0, CTRL_CMD_GETFAMILY, 0); 379 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 380 381 ret = send_and_recv_msgs(drv, msg, family_handler, &res); 382 msg = NULL; 383 if (ret == 0) 384 ret = res.id; 385 386 nla_put_failure: 387 nlmsg_free(msg); 388 return ret; 389 } 390 391 392 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 393 { 394 struct i802_bss *bss = priv; 395 struct wpa_driver_nl80211_data *drv = bss->drv; 396 if (!drv->associated) 397 return -1; 398 os_memcpy(bssid, drv->bssid, ETH_ALEN); 399 return 0; 400 } 401 402 403 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 404 { 405 struct i802_bss *bss = priv; 406 struct wpa_driver_nl80211_data *drv = bss->drv; 407 if (!drv->associated) 408 return -1; 409 os_memcpy(ssid, drv->ssid, drv->ssid_len); 410 return drv->ssid_len; 411 } 412 413 414 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, 415 char *buf, size_t len, int del) 416 { 417 union wpa_event_data event; 418 419 os_memset(&event, 0, sizeof(event)); 420 if (len > sizeof(event.interface_status.ifname)) 421 len = sizeof(event.interface_status.ifname) - 1; 422 os_memcpy(event.interface_status.ifname, buf, len); 423 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : 424 EVENT_INTERFACE_ADDED; 425 426 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", 427 del ? "DEL" : "NEW", 428 event.interface_status.ifname, 429 del ? "removed" : "added"); 430 431 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) { 432 if (del) 433 drv->if_removed = 1; 434 else 435 drv->if_removed = 0; 436 } 437 438 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 439 } 440 441 442 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 443 u8 *buf, size_t len) 444 { 445 int attrlen, rta_len; 446 struct rtattr *attr; 447 448 attrlen = len; 449 attr = (struct rtattr *) buf; 450 451 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 452 while (RTA_OK(attr, attrlen)) { 453 if (attr->rta_type == IFLA_IFNAME) { 454 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname) 455 == 0) 456 return 1; 457 else 458 break; 459 } 460 attr = RTA_NEXT(attr, attrlen); 461 } 462 463 return 0; 464 } 465 466 467 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 468 int ifindex, u8 *buf, size_t len) 469 { 470 if (drv->ifindex == ifindex) 471 return 1; 472 473 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 474 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname); 475 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 476 "interface"); 477 wpa_driver_nl80211_finish_drv_init(drv); 478 return 1; 479 } 480 481 return 0; 482 } 483 484 485 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 486 struct ifinfomsg *ifi, 487 u8 *buf, size_t len) 488 { 489 struct wpa_driver_nl80211_data *drv = ctx; 490 int attrlen, rta_len; 491 struct rtattr *attr; 492 u32 brid = 0; 493 494 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) && 495 !have_ifidx(drv, ifi->ifi_index)) { 496 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign " 497 "ifindex %d", ifi->ifi_index); 498 return; 499 } 500 501 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " 502 "(%s%s%s%s)", 503 drv->operstate, ifi->ifi_flags, 504 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 505 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 506 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 507 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 508 509 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 510 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 511 drv->if_disabled = 1; 512 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL); 513 } 514 515 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 516 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 517 drv->if_disabled = 0; 518 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL); 519 } 520 521 /* 522 * Some drivers send the association event before the operup event--in 523 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 524 * fails. This will hit us when wpa_supplicant does not need to do 525 * IEEE 802.1X authentication 526 */ 527 if (drv->operstate == 1 && 528 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 529 !(ifi->ifi_flags & IFF_RUNNING)) 530 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 531 -1, IF_OPER_UP); 532 533 attrlen = len; 534 attr = (struct rtattr *) buf; 535 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 536 while (RTA_OK(attr, attrlen)) { 537 if (attr->rta_type == IFLA_IFNAME) { 538 wpa_driver_nl80211_event_link( 539 drv, 540 ((char *) attr) + rta_len, 541 attr->rta_len - rta_len, 0); 542 } else if (attr->rta_type == IFLA_MASTER) 543 brid = nla_get_u32((struct nlattr *) attr); 544 attr = RTA_NEXT(attr, attrlen); 545 } 546 547 #ifdef HOSTAPD 548 if (ifi->ifi_family == AF_BRIDGE && brid) { 549 /* device has been added to bridge */ 550 char namebuf[IFNAMSIZ]; 551 if_indextoname(brid, namebuf); 552 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 553 brid, namebuf); 554 add_ifidx(drv, brid); 555 } 556 #endif /* HOSTAPD */ 557 } 558 559 560 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 561 struct ifinfomsg *ifi, 562 u8 *buf, size_t len) 563 { 564 struct wpa_driver_nl80211_data *drv = ctx; 565 int attrlen, rta_len; 566 struct rtattr *attr; 567 u32 brid = 0; 568 569 attrlen = len; 570 attr = (struct rtattr *) buf; 571 572 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 573 while (RTA_OK(attr, attrlen)) { 574 if (attr->rta_type == IFLA_IFNAME) { 575 wpa_driver_nl80211_event_link( 576 drv, 577 ((char *) attr) + rta_len, 578 attr->rta_len - rta_len, 1); 579 } else if (attr->rta_type == IFLA_MASTER) 580 brid = nla_get_u32((struct nlattr *) attr); 581 attr = RTA_NEXT(attr, attrlen); 582 } 583 584 #ifdef HOSTAPD 585 if (ifi->ifi_family == AF_BRIDGE && brid) { 586 /* device has been removed from bridge */ 587 char namebuf[IFNAMSIZ]; 588 if_indextoname(brid, namebuf); 589 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 590 "%s", brid, namebuf); 591 del_ifidx(drv, brid); 592 } 593 #endif /* HOSTAPD */ 594 } 595 596 597 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 598 const u8 *frame, size_t len) 599 { 600 const struct ieee80211_mgmt *mgmt; 601 union wpa_event_data event; 602 603 mgmt = (const struct ieee80211_mgmt *) frame; 604 if (len < 24 + sizeof(mgmt->u.auth)) { 605 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 606 "frame"); 607 return; 608 } 609 610 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 611 os_memset(&event, 0, sizeof(event)); 612 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 613 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 614 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 615 if (len > 24 + sizeof(mgmt->u.auth)) { 616 event.auth.ies = mgmt->u.auth.variable; 617 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 618 } 619 620 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 621 } 622 623 624 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 625 { 626 struct nl_msg *msg; 627 int ret; 628 struct nl80211_bss_info_arg arg; 629 630 os_memset(&arg, 0, sizeof(arg)); 631 msg = nlmsg_alloc(); 632 if (!msg) 633 goto nla_put_failure; 634 635 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP, 636 NL80211_CMD_GET_SCAN, 0); 637 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 638 639 arg.drv = drv; 640 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 641 msg = NULL; 642 if (ret == 0) { 643 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 644 "associated BSS from scan results: %u MHz", 645 arg.assoc_freq); 646 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq; 647 } 648 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 649 "(%s)", ret, strerror(-ret)); 650 nla_put_failure: 651 nlmsg_free(msg); 652 return drv->assoc_freq; 653 } 654 655 656 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 657 const u8 *frame, size_t len) 658 { 659 const struct ieee80211_mgmt *mgmt; 660 union wpa_event_data event; 661 u16 status; 662 #ifdef ANDROID_BRCM_P2P_PATCH 663 struct wpa_supplicant *wpa_s = drv->ctx; 664 #endif 665 666 mgmt = (const struct ieee80211_mgmt *) frame; 667 #if (defined (CONFIG_AP) || defined (HOSTAPD) ) && defined (ANDROID_BRCM_P2P_PATCH) 668 if (drv->nlmode == NL80211_IFTYPE_AP || drv->nlmode == NL80211_IFTYPE_P2P_GO) { 669 if (len < 24 + sizeof(mgmt->u.assoc_req)) { 670 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 671 "frame"); 672 return; 673 } 674 os_memset(&event, 0, sizeof(event)); 675 event.assoc_info.freq = drv->assoc_freq; 676 event.assoc_info.req_ies = (u8 *) mgmt->u.assoc_req.variable; 677 event.assoc_info.req_ies_len = len - 24 - sizeof(mgmt->u.assoc_req); 678 event.assoc_info.addr = mgmt->sa; 679 } else { 680 #endif 681 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 682 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 683 "frame"); 684 return; 685 } 686 687 status = le_to_host16(mgmt->u.assoc_resp.status_code); 688 if (status != WLAN_STATUS_SUCCESS) { 689 os_memset(&event, 0, sizeof(event)); 690 event.assoc_reject.bssid = mgmt->bssid; 691 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 692 event.assoc_reject.resp_ies = 693 (u8 *) mgmt->u.assoc_resp.variable; 694 event.assoc_reject.resp_ies_len = 695 len - 24 - sizeof(mgmt->u.assoc_resp); 696 } 697 event.assoc_reject.status_code = status; 698 699 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 700 return; 701 } 702 703 drv->associated = 1; 704 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 705 706 os_memset(&event, 0, sizeof(event)); 707 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 708 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 709 event.assoc_info.resp_ies_len = 710 len - 24 - sizeof(mgmt->u.assoc_resp); 711 } 712 713 event.assoc_info.freq = drv->assoc_freq; 714 #if (defined (CONFIG_AP) || defined(HOSTAPD)) && defined (ANDROID_BRCM_P2P_PATCH) 715 } 716 #endif 717 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 718 } 719 720 721 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 722 enum nl80211_commands cmd, struct nlattr *status, 723 struct nlattr *addr, struct nlattr *req_ie, 724 struct nlattr *resp_ie) 725 { 726 union wpa_event_data event; 727 728 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 729 /* 730 * Avoid reporting two association events that would confuse 731 * the core code. 732 */ 733 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 734 "when using userspace SME", cmd); 735 return; 736 } 737 738 os_memset(&event, 0, sizeof(event)); 739 if (cmd == NL80211_CMD_CONNECT && 740 nla_get_u16(status) != WLAN_STATUS_SUCCESS) { 741 if (addr) 742 event.assoc_reject.bssid = nla_data(addr); 743 if (resp_ie) { 744 event.assoc_reject.resp_ies = nla_data(resp_ie); 745 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 746 } 747 event.assoc_reject.status_code = nla_get_u16(status); 748 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 749 return; 750 } 751 752 drv->associated = 1; 753 if (addr) 754 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 755 756 if (req_ie) { 757 event.assoc_info.req_ies = nla_data(req_ie); 758 event.assoc_info.req_ies_len = nla_len(req_ie); 759 } 760 if (resp_ie) { 761 event.assoc_info.resp_ies = nla_data(resp_ie); 762 event.assoc_info.resp_ies_len = nla_len(resp_ie); 763 } 764 765 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 766 767 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 768 } 769 770 771 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 772 enum nl80211_commands cmd, struct nlattr *addr) 773 { 774 union wpa_event_data event; 775 enum wpa_event_type ev; 776 777 if (nla_len(addr) != ETH_ALEN) 778 return; 779 780 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 781 cmd, MAC2STR((u8 *) nla_data(addr))); 782 783 if (cmd == NL80211_CMD_AUTHENTICATE) 784 ev = EVENT_AUTH_TIMED_OUT; 785 else if (cmd == NL80211_CMD_ASSOCIATE) 786 ev = EVENT_ASSOC_TIMED_OUT; 787 else 788 return; 789 790 os_memset(&event, 0, sizeof(event)); 791 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 792 wpa_supplicant_event(drv->ctx, ev, &event); 793 } 794 795 796 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv, 797 struct nlattr *freq, const u8 *frame, size_t len) 798 { 799 const struct ieee80211_mgmt *mgmt; 800 union wpa_event_data event; 801 u16 fc, stype; 802 803 mgmt = (const struct ieee80211_mgmt *) frame; 804 if (len < 24) { 805 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame"); 806 return; 807 } 808 809 fc = le_to_host16(mgmt->frame_control); 810 stype = WLAN_FC_GET_STYPE(fc); 811 812 os_memset(&event, 0, sizeof(event)); 813 if (freq) { 814 event.rx_action.freq = nla_get_u32(freq); 815 drv->last_mgmt_freq = event.rx_action.freq; 816 } 817 if (stype == WLAN_FC_STYPE_ACTION) { 818 event.rx_action.da = mgmt->da; 819 event.rx_action.sa = mgmt->sa; 820 event.rx_action.bssid = mgmt->bssid; 821 event.rx_action.category = mgmt->u.action.category; 822 event.rx_action.data = &mgmt->u.action.category + 1; 823 event.rx_action.len = frame + len - event.rx_action.data; 824 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event); 825 #ifdef ANDROID_BRCM_P2P_PATCH 826 } else if (stype == WLAN_FC_STYPE_ASSOC_REQ) { 827 mlme_event_assoc(drv, frame, len); 828 } else if (stype == WLAN_FC_STYPE_DISASSOC) { 829 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, frame, len); 830 } else if (stype == WLAN_FC_STYPE_DEAUTH) { 831 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, frame, len); 832 #endif 833 } else { 834 event.rx_mgmt.frame = frame; 835 event.rx_mgmt.frame_len = len; 836 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 837 } 838 } 839 840 841 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv, 842 struct nlattr *cookie, const u8 *frame, 843 size_t len, struct nlattr *ack) 844 { 845 union wpa_event_data event; 846 const struct ieee80211_hdr *hdr; 847 u16 fc; 848 u64 cookie_val; 849 850 if (!cookie) 851 return; 852 853 cookie_val = nla_get_u64(cookie); 854 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s " 855 "(ack=%d)", 856 (long long unsigned int) cookie_val, 857 cookie_val == drv->send_action_cookie ? 858 " (match)" : " (unknown)", ack != NULL); 859 if (cookie_val != drv->send_action_cookie) 860 return; 861 862 hdr = (const struct ieee80211_hdr *) frame; 863 fc = le_to_host16(hdr->frame_control); 864 865 os_memset(&event, 0, sizeof(event)); 866 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 867 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 868 event.tx_status.dst = hdr->addr1; 869 event.tx_status.data = frame; 870 event.tx_status.data_len = len; 871 event.tx_status.ack = ack != NULL; 872 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 873 } 874 875 876 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 877 enum wpa_event_type type, 878 const u8 *frame, size_t len) 879 { 880 const struct ieee80211_mgmt *mgmt; 881 union wpa_event_data event; 882 const u8 *bssid = NULL; 883 u16 reason_code = 0; 884 885 mgmt = (const struct ieee80211_mgmt *) frame; 886 if (len >= 24) { 887 bssid = mgmt->bssid; 888 889 if (drv->associated != 0 && 890 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 891 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 892 /* 893 * We have presumably received this deauth as a 894 * response to a clear_state_mismatch() outgoing 895 * deauth. Don't let it take us offline! 896 */ 897 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 898 "from Unknown BSSID " MACSTR " -- ignoring", 899 MAC2STR(bssid)); 900 return; 901 } 902 } 903 904 drv->associated = 0; 905 os_memset(&event, 0, sizeof(event)); 906 907 /* Note: Same offset for Reason Code in both frame subtypes */ 908 if (len >= 24 + sizeof(mgmt->u.deauth)) 909 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 910 911 if (type == EVENT_DISASSOC) { 912 #ifdef ANDROID_BRCM_P2P_PATCH 913 if (drv->nlmode == NL80211_IFTYPE_AP || 914 drv->nlmode == NL80211_IFTYPE_P2P_GO) { 915 event.disassoc_info.addr = mgmt->sa; 916 } else 917 #endif 918 event.disassoc_info.addr = bssid; 919 event.disassoc_info.reason_code = reason_code; 920 if (frame + len > mgmt->u.disassoc.variable) { 921 event.disassoc_info.ie = mgmt->u.disassoc.variable; 922 event.disassoc_info.ie_len = frame + len - 923 mgmt->u.disassoc.variable; 924 } 925 } else { 926 #ifdef ANDROID_BRCM_P2P_PATCH 927 if (drv->nlmode == NL80211_IFTYPE_AP || 928 drv->nlmode == NL80211_IFTYPE_P2P_GO) { 929 event.deauth_info.addr = mgmt->sa; 930 } else 931 #endif 932 event.deauth_info.addr = bssid; 933 event.deauth_info.reason_code = reason_code; 934 if (frame + len > mgmt->u.deauth.variable) { 935 event.deauth_info.ie = mgmt->u.deauth.variable; 936 event.deauth_info.ie_len = frame + len - 937 mgmt->u.deauth.variable; 938 } 939 } 940 941 wpa_supplicant_event(drv->ctx, type, &event); 942 } 943 944 945 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 946 enum wpa_event_type type, 947 const u8 *frame, size_t len) 948 { 949 const struct ieee80211_mgmt *mgmt; 950 union wpa_event_data event; 951 u16 reason_code = 0; 952 953 if (len < 24) 954 return; 955 956 mgmt = (const struct ieee80211_mgmt *) frame; 957 958 os_memset(&event, 0, sizeof(event)); 959 /* Note: Same offset for Reason Code in both frame subtypes */ 960 if (len >= 24 + sizeof(mgmt->u.deauth)) 961 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 962 963 if (type == EVENT_UNPROT_DISASSOC) { 964 event.unprot_disassoc.sa = mgmt->sa; 965 event.unprot_disassoc.da = mgmt->da; 966 event.unprot_disassoc.reason_code = reason_code; 967 } else { 968 event.unprot_deauth.sa = mgmt->sa; 969 event.unprot_deauth.da = mgmt->da; 970 event.unprot_deauth.reason_code = reason_code; 971 } 972 973 wpa_supplicant_event(drv->ctx, type, &event); 974 } 975 976 977 static void mlme_event(struct wpa_driver_nl80211_data *drv, 978 enum nl80211_commands cmd, struct nlattr *frame, 979 struct nlattr *addr, struct nlattr *timed_out, 980 struct nlattr *freq, struct nlattr *ack, 981 struct nlattr *cookie) 982 { 983 if (timed_out && addr) { 984 mlme_timeout_event(drv, cmd, addr); 985 return; 986 } 987 988 if (frame == NULL) { 989 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " 990 "data", cmd); 991 return; 992 } 993 994 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); 995 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 996 nla_data(frame), nla_len(frame)); 997 998 switch (cmd) { 999 case NL80211_CMD_AUTHENTICATE: 1000 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 1001 break; 1002 case NL80211_CMD_ASSOCIATE: 1003 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 1004 break; 1005 case NL80211_CMD_DEAUTHENTICATE: 1006 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 1007 nla_data(frame), nla_len(frame)); 1008 break; 1009 case NL80211_CMD_DISASSOCIATE: 1010 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 1011 nla_data(frame), nla_len(frame)); 1012 break; 1013 case NL80211_CMD_FRAME: 1014 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame)); 1015 break; 1016 case NL80211_CMD_FRAME_TX_STATUS: 1017 mlme_event_action_tx_status(drv, cookie, nla_data(frame), 1018 nla_len(frame), ack); 1019 break; 1020 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1021 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 1022 nla_data(frame), nla_len(frame)); 1023 break; 1024 case NL80211_CMD_UNPROT_DISASSOCIATE: 1025 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 1026 nla_data(frame), nla_len(frame)); 1027 break; 1028 default: 1029 break; 1030 } 1031 } 1032 1033 1034 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv, 1035 struct nlattr *tb[]) 1036 { 1037 union wpa_event_data data; 1038 1039 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 1040 os_memset(&data, 0, sizeof(data)); 1041 if (tb[NL80211_ATTR_MAC]) { 1042 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 1043 nla_data(tb[NL80211_ATTR_MAC]), 1044 nla_len(tb[NL80211_ATTR_MAC])); 1045 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 1046 } 1047 if (tb[NL80211_ATTR_KEY_SEQ]) { 1048 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 1049 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 1050 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 1051 } 1052 if (tb[NL80211_ATTR_KEY_TYPE]) { 1053 enum nl80211_key_type key_type = 1054 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 1055 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 1056 if (key_type == NL80211_KEYTYPE_PAIRWISE) 1057 data.michael_mic_failure.unicast = 1; 1058 } else 1059 data.michael_mic_failure.unicast = 1; 1060 1061 if (tb[NL80211_ATTR_KEY_IDX]) { 1062 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 1063 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 1064 } 1065 1066 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 1067 } 1068 1069 1070 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 1071 struct nlattr *tb[]) 1072 { 1073 if (tb[NL80211_ATTR_MAC] == NULL) { 1074 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 1075 "event"); 1076 return; 1077 } 1078 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 1079 drv->associated = 1; 1080 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 1081 MAC2STR(drv->bssid)); 1082 1083 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1084 } 1085 1086 1087 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 1088 int cancel_event, struct nlattr *tb[]) 1089 { 1090 unsigned int freq, chan_type, duration; 1091 union wpa_event_data data; 1092 u64 cookie; 1093 1094 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1095 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1096 else 1097 freq = 0; 1098 1099 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 1100 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1101 else 1102 chan_type = 0; 1103 1104 if (tb[NL80211_ATTR_DURATION]) 1105 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 1106 else 1107 duration = 0; 1108 1109 if (tb[NL80211_ATTR_COOKIE]) 1110 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 1111 else 1112 cookie = 0; 1113 1114 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 1115 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 1116 cancel_event, freq, chan_type, duration, 1117 (long long unsigned int) cookie, 1118 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 1119 1120 if (cookie != drv->remain_on_chan_cookie) 1121 return; /* not for us */ 1122 1123 drv->pending_remain_on_chan = !cancel_event; 1124 1125 os_memset(&data, 0, sizeof(data)); 1126 data.remain_on_channel.freq = freq; 1127 data.remain_on_channel.duration = duration; 1128 wpa_supplicant_event(drv->ctx, cancel_event ? 1129 EVENT_CANCEL_REMAIN_ON_CHANNEL : 1130 EVENT_REMAIN_ON_CHANNEL, &data); 1131 } 1132 1133 1134 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 1135 struct nlattr *tb[]) 1136 { 1137 union wpa_event_data event; 1138 struct nlattr *nl; 1139 int rem; 1140 struct scan_info *info; 1141 #define MAX_REPORT_FREQS 50 1142 int freqs[MAX_REPORT_FREQS]; 1143 int num_freqs = 0; 1144 1145 os_memset(&event, 0, sizeof(event)); 1146 info = &event.scan_info; 1147 info->aborted = aborted; 1148 1149 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 1150 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 1151 struct wpa_driver_scan_ssid *s = 1152 &info->ssids[info->num_ssids]; 1153 s->ssid = nla_data(nl); 1154 s->ssid_len = nla_len(nl); 1155 info->num_ssids++; 1156 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 1157 break; 1158 } 1159 } 1160 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 1161 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 1162 { 1163 freqs[num_freqs] = nla_get_u32(nl); 1164 num_freqs++; 1165 if (num_freqs == MAX_REPORT_FREQS - 1) 1166 break; 1167 } 1168 info->freqs = freqs; 1169 info->num_freqs = num_freqs; 1170 } 1171 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 1172 } 1173 1174 1175 static int get_link_signal(struct nl_msg *msg, void *arg) 1176 { 1177 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1178 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1179 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1180 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 1181 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1182 }; 1183 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1184 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1185 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1186 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1187 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1188 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1189 }; 1190 struct wpa_signal_info *sig_change = arg; 1191 1192 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1193 genlmsg_attrlen(gnlh, 0), NULL); 1194 if (!tb[NL80211_ATTR_STA_INFO] || 1195 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1196 tb[NL80211_ATTR_STA_INFO], policy)) 1197 return NL_SKIP; 1198 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 1199 return NL_SKIP; 1200 1201 sig_change->current_signal = 1202 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1203 1204 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 1205 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1206 sinfo[NL80211_STA_INFO_TX_BITRATE], 1207 rate_policy)) { 1208 sig_change->current_txrate = 0; 1209 } else { 1210 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 1211 sig_change->current_txrate = 1212 nla_get_u16(rinfo[ 1213 NL80211_RATE_INFO_BITRATE]) * 100; 1214 } 1215 } 1216 } 1217 1218 return NL_SKIP; 1219 } 1220 1221 1222 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 1223 struct wpa_signal_info *sig) 1224 { 1225 struct nl_msg *msg; 1226 1227 sig->current_signal = -9999; 1228 sig->current_txrate = 0; 1229 1230 msg = nlmsg_alloc(); 1231 if (!msg) 1232 return -ENOMEM; 1233 1234 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 1235 0, NL80211_CMD_GET_STATION, 0); 1236 1237 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1238 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 1239 1240 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 1241 nla_put_failure: 1242 return -ENOBUFS; 1243 } 1244 1245 1246 static int get_link_noise(struct nl_msg *msg, void *arg) 1247 { 1248 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1249 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1250 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1251 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1252 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1253 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1254 }; 1255 struct wpa_signal_info *sig_change = arg; 1256 1257 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1258 genlmsg_attrlen(gnlh, 0), NULL); 1259 1260 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 1261 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 1262 return NL_SKIP; 1263 } 1264 1265 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1266 tb[NL80211_ATTR_SURVEY_INFO], 1267 survey_policy)) { 1268 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 1269 "attributes!"); 1270 return NL_SKIP; 1271 } 1272 1273 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1274 return NL_SKIP; 1275 1276 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 1277 sig_change->frequency) 1278 return NL_SKIP; 1279 1280 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 1281 return NL_SKIP; 1282 1283 sig_change->current_noise = 1284 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1285 1286 return NL_SKIP; 1287 } 1288 1289 1290 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 1291 struct wpa_signal_info *sig_change) 1292 { 1293 struct nl_msg *msg; 1294 1295 sig_change->current_noise = 9999; 1296 sig_change->frequency = drv->assoc_freq; 1297 1298 msg = nlmsg_alloc(); 1299 if (!msg) 1300 return -ENOMEM; 1301 1302 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 1303 NLM_F_DUMP, NL80211_CMD_GET_SURVEY, 0); 1304 1305 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1306 1307 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 1308 nla_put_failure: 1309 return -ENOBUFS; 1310 } 1311 1312 1313 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 1314 struct nlattr *tb[]) 1315 { 1316 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 1317 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 1318 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 1319 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 1320 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 1321 }; 1322 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 1323 enum nl80211_cqm_rssi_threshold_event event; 1324 union wpa_event_data ed; 1325 struct wpa_signal_info sig; 1326 int res; 1327 1328 if (tb[NL80211_ATTR_CQM] == NULL || 1329 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 1330 cqm_policy)) { 1331 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 1332 return; 1333 } 1334 1335 os_memset(&ed, 0, sizeof(ed)); 1336 1337 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 1338 if (!tb[NL80211_ATTR_MAC]) 1339 return; 1340 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 1341 ETH_ALEN); 1342 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 1343 return; 1344 } 1345 1346 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 1347 return; 1348 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 1349 1350 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 1351 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1352 "event: RSSI high"); 1353 ed.signal_change.above_threshold = 1; 1354 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 1355 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 1356 "event: RSSI low"); 1357 ed.signal_change.above_threshold = 0; 1358 } else 1359 return; 1360 1361 res = nl80211_get_link_signal(drv, &sig); 1362 if (res == 0) { 1363 ed.signal_change.current_signal = sig.current_signal; 1364 ed.signal_change.current_txrate = sig.current_txrate; 1365 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 1366 sig.current_signal, sig.current_txrate); 1367 } 1368 1369 res = nl80211_get_link_noise(drv, &sig); 1370 if (res == 0) { 1371 ed.signal_change.current_noise = sig.current_noise; 1372 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 1373 sig.current_noise); 1374 } 1375 1376 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 1377 } 1378 1379 1380 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 1381 struct nlattr **tb) 1382 { 1383 u8 *addr; 1384 union wpa_event_data data; 1385 1386 if (tb[NL80211_ATTR_MAC] == NULL) 1387 return; 1388 addr = nla_data(tb[NL80211_ATTR_MAC]); 1389 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 1390 1391 if (drv->nlmode == NL80211_IFTYPE_AP && 1392 drv->no_monitor_iface_capab) { 1393 u8 *ies = NULL; 1394 size_t ies_len = 0; 1395 if (tb[NL80211_ATTR_IE]) { 1396 ies = nla_data(tb[NL80211_ATTR_IE]); 1397 ies_len = nla_len(tb[NL80211_ATTR_IE]); 1398 } 1399 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 1400 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 1401 return; 1402 } 1403 1404 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1405 return; 1406 1407 os_memset(&data, 0, sizeof(data)); 1408 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 1409 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 1410 } 1411 1412 1413 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 1414 struct nlattr **tb) 1415 { 1416 u8 *addr; 1417 union wpa_event_data data; 1418 1419 if (tb[NL80211_ATTR_MAC] == NULL) 1420 return; 1421 addr = nla_data(tb[NL80211_ATTR_MAC]); 1422 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 1423 MAC2STR(addr)); 1424 1425 if (drv->nlmode == NL80211_IFTYPE_AP && 1426 drv->no_monitor_iface_capab) { 1427 drv_event_disassoc(drv->ctx, addr); 1428 return; 1429 } 1430 1431 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 1432 return; 1433 1434 os_memset(&data, 0, sizeof(data)); 1435 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 1436 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 1437 } 1438 1439 1440 static int process_event(struct nl_msg *msg, void *arg) 1441 { 1442 struct wpa_driver_nl80211_data *drv = arg; 1443 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1444 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1445 union wpa_event_data data; 1446 1447 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1448 genlmsg_attrlen(gnlh, 0), NULL); 1449 1450 if (tb[NL80211_ATTR_IFINDEX]) { 1451 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1452 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) { 1453 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" 1454 " for foreign interface (ifindex %d)", 1455 gnlh->cmd, ifindex); 1456 return NL_SKIP; 1457 } 1458 } 1459 1460 if (drv->ap_scan_as_station && 1461 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS || 1462 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) { 1463 wpa_driver_nl80211_set_mode(&drv->first_bss, 1464 IEEE80211_MODE_AP); 1465 drv->ap_scan_as_station = 0; 1466 } 1467 1468 switch (gnlh->cmd) { 1469 case NL80211_CMD_TRIGGER_SCAN: 1470 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger"); 1471 break; 1472 case NL80211_CMD_NEW_SCAN_RESULTS: 1473 wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); 1474 drv->scan_complete_events = 1; 1475 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 1476 drv->ctx); 1477 send_scan_event(drv, 0, tb); 1478 break; 1479 case NL80211_CMD_SCAN_ABORTED: 1480 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); 1481 /* 1482 * Need to indicate that scan results are available in order 1483 * not to make wpa_supplicant stop its scanning. 1484 */ 1485 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 1486 drv->ctx); 1487 send_scan_event(drv, 1, tb); 1488 break; 1489 case NL80211_CMD_AUTHENTICATE: 1490 case NL80211_CMD_ASSOCIATE: 1491 case NL80211_CMD_DEAUTHENTICATE: 1492 case NL80211_CMD_DISASSOCIATE: 1493 case NL80211_CMD_FRAME: 1494 case NL80211_CMD_FRAME_TX_STATUS: 1495 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 1496 case NL80211_CMD_UNPROT_DISASSOCIATE: 1497 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME], 1498 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 1499 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 1500 tb[NL80211_ATTR_COOKIE]); 1501 break; 1502 case NL80211_CMD_CONNECT: 1503 case NL80211_CMD_ROAM: 1504 mlme_event_connect(drv, gnlh->cmd, 1505 tb[NL80211_ATTR_STATUS_CODE], 1506 tb[NL80211_ATTR_MAC], 1507 tb[NL80211_ATTR_REQ_IE], 1508 tb[NL80211_ATTR_RESP_IE]); 1509 break; 1510 case NL80211_CMD_DISCONNECT: 1511 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1512 /* 1513 * Avoid reporting two disassociation events that could 1514 * confuse the core code. 1515 */ 1516 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1517 "event when using userspace SME"); 1518 break; 1519 } 1520 drv->associated = 0; 1521 os_memset(&data, 0, sizeof(data)); 1522 if (tb[NL80211_ATTR_REASON_CODE]) { 1523 data.disassoc_info.reason_code = 1524 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 1525 #ifdef ANDROID 1526 if (data.disassoc_info.reason_code == WLAN_REASON_UNSPECIFIED) 1527 wpa_msg(drv->ctx, MSG_INFO, 1528 WPA_EVENT_DRIVER_STATE "HANGED"); 1529 #endif 1530 } 1531 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data); 1532 break; 1533 case NL80211_CMD_MICHAEL_MIC_FAILURE: 1534 mlme_event_michael_mic_failure(drv, tb); 1535 break; 1536 case NL80211_CMD_JOIN_IBSS: 1537 mlme_event_join_ibss(drv, tb); 1538 break; 1539 case NL80211_CMD_REMAIN_ON_CHANNEL: 1540 mlme_event_remain_on_channel(drv, 0, tb); 1541 break; 1542 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 1543 mlme_event_remain_on_channel(drv, 1, tb); 1544 break; 1545 case NL80211_CMD_NOTIFY_CQM: 1546 nl80211_cqm_event(drv, tb); 1547 break; 1548 case NL80211_CMD_REG_CHANGE: 1549 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 1550 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 1551 NULL); 1552 break; 1553 case NL80211_CMD_REG_BEACON_HINT: 1554 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 1555 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 1556 NULL); 1557 break; 1558 case NL80211_CMD_NEW_STATION: 1559 nl80211_new_station_event(drv, tb); 1560 break; 1561 case NL80211_CMD_DEL_STATION: 1562 nl80211_del_station_event(drv, tb); 1563 break; 1564 default: 1565 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 1566 "(cmd=%d)", gnlh->cmd); 1567 break; 1568 } 1569 1570 return NL_SKIP; 1571 } 1572 1573 1574 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 1575 void *handle) 1576 { 1577 struct nl_cb *cb; 1578 struct wpa_driver_nl80211_data *drv = eloop_ctx; 1579 1580 wpa_printf(MSG_DEBUG, "nl80211: Event message available"); 1581 1582 cb = nl_cb_clone(drv->nl_cb); 1583 if (!cb) 1584 return; 1585 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 1586 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv); 1587 nl_recvmsgs(handle, cb); 1588 nl_cb_put(cb); 1589 } 1590 1591 1592 /** 1593 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 1594 * @priv: driver_nl80211 private data 1595 * @alpha2_arg: country to which to switch to 1596 * Returns: 0 on success, -1 on failure 1597 * 1598 * This asks nl80211 to set the regulatory domain for given 1599 * country ISO / IEC alpha2. 1600 */ 1601 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 1602 { 1603 struct i802_bss *bss = priv; 1604 struct wpa_driver_nl80211_data *drv = bss->drv; 1605 char alpha2[3]; 1606 struct nl_msg *msg; 1607 1608 msg = nlmsg_alloc(); 1609 if (!msg) 1610 return -ENOMEM; 1611 1612 alpha2[0] = alpha2_arg[0]; 1613 alpha2[1] = alpha2_arg[1]; 1614 alpha2[2] = '\0'; 1615 1616 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 1617 0, NL80211_CMD_REQ_SET_REG, 0); 1618 1619 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 1620 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 1621 return -EINVAL; 1622 return 0; 1623 nla_put_failure: 1624 return -EINVAL; 1625 } 1626 1627 1628 struct wiphy_info_data { 1629 int max_scan_ssids; 1630 int ap_supported; 1631 int p2p_supported; 1632 int auth_supported; 1633 int connect_supported; 1634 int offchan_tx_supported; 1635 int max_remain_on_chan; 1636 }; 1637 1638 1639 static int wiphy_info_handler(struct nl_msg *msg, void *arg) 1640 { 1641 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 1642 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1643 struct wiphy_info_data *info = arg; 1644 int p2p_go_supported = 0, p2p_client_supported = 0; 1645 1646 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1647 genlmsg_attrlen(gnlh, 0), NULL); 1648 1649 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 1650 info->max_scan_ssids = 1651 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 1652 1653 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { 1654 struct nlattr *nl_mode; 1655 int i; 1656 nla_for_each_nested(nl_mode, 1657 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { 1658 switch (nla_type(nl_mode)) { 1659 case NL80211_IFTYPE_AP: 1660 info->ap_supported = 1; 1661 break; 1662 case NL80211_IFTYPE_P2P_GO: 1663 p2p_go_supported = 1; 1664 break; 1665 case NL80211_IFTYPE_P2P_CLIENT: 1666 p2p_client_supported = 1; 1667 break; 1668 } 1669 } 1670 } 1671 1672 info->p2p_supported = p2p_go_supported && p2p_client_supported; 1673 1674 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { 1675 struct nlattr *nl_cmd; 1676 int i; 1677 1678 nla_for_each_nested(nl_cmd, 1679 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { 1680 u32 cmd = nla_get_u32(nl_cmd); 1681 if (cmd == NL80211_CMD_AUTHENTICATE) 1682 info->auth_supported = 1; 1683 else if (cmd == NL80211_CMD_CONNECT) 1684 info->connect_supported = 1; 1685 } 1686 } 1687 1688 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) 1689 info->offchan_tx_supported = 1; 1690 1691 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]) 1692 info->max_remain_on_chan = 1693 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 1694 1695 return NL_SKIP; 1696 } 1697 1698 1699 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 1700 struct wiphy_info_data *info) 1701 { 1702 struct nl_msg *msg; 1703 1704 os_memset(info, 0, sizeof(*info)); 1705 1706 /* default to 5000 since early versions of mac80211 don't set it */ 1707 info->max_remain_on_chan = 5000; 1708 1709 msg = nlmsg_alloc(); 1710 if (!msg) 1711 return -1; 1712 1713 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 1714 0, NL80211_CMD_GET_WIPHY, 0); 1715 1716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex); 1717 1718 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) 1719 return 0; 1720 msg = NULL; 1721 nla_put_failure: 1722 nlmsg_free(msg); 1723 return -1; 1724 } 1725 1726 1727 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 1728 { 1729 struct wiphy_info_data info; 1730 if (wpa_driver_nl80211_get_info(drv, &info)) 1731 return -1; 1732 drv->has_capability = 1; 1733 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 1734 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 1735 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 1736 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 1737 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 1738 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 1739 WPA_DRIVER_CAPA_ENC_WEP104 | 1740 WPA_DRIVER_CAPA_ENC_TKIP | 1741 WPA_DRIVER_CAPA_ENC_CCMP; 1742 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 1743 WPA_DRIVER_AUTH_SHARED | 1744 WPA_DRIVER_AUTH_LEAP; 1745 1746 drv->capa.max_scan_ssids = info.max_scan_ssids; 1747 if (info.ap_supported) 1748 drv->capa.flags |= WPA_DRIVER_FLAGS_AP; 1749 1750 if (info.auth_supported) 1751 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 1752 else if (!info.connect_supported) { 1753 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 1754 "authentication/association or connect commands"); 1755 return -1; 1756 } 1757 1758 if (info.offchan_tx_supported) { 1759 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 1760 "off-channel TX"); 1761 drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 1762 } 1763 1764 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 1765 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 1766 if (info.p2p_supported) 1767 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 1768 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 1769 drv->capa.max_remain_on_chan = info.max_remain_on_chan; 1770 1771 return 0; 1772 } 1773 1774 1775 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 1776 { 1777 int ret; 1778 1779 /* Initialize generic netlink and nl80211 */ 1780 1781 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 1782 if (drv->nl_cb == NULL) { 1783 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 1784 "callbacks"); 1785 goto err1; 1786 } 1787 1788 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb); 1789 if (drv->nl_handle == NULL) { 1790 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 1791 "callbacks"); 1792 goto err2; 1793 } 1794 1795 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb); 1796 if (drv->nl_handle_event == NULL) { 1797 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 1798 "callbacks (event)"); 1799 goto err2b; 1800 } 1801 1802 if (genl_connect(drv->nl_handle)) { 1803 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 1804 "netlink"); 1805 goto err3; 1806 } 1807 1808 if (genl_connect(drv->nl_handle_event)) { 1809 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 1810 "netlink (event)"); 1811 goto err3; 1812 } 1813 1814 #ifdef CONFIG_LIBNL20 1815 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) { 1816 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 1817 "netlink cache"); 1818 goto err3; 1819 } 1820 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) < 1821 0) { 1822 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 1823 "netlink cache (event)"); 1824 goto err3b; 1825 } 1826 #else /* CONFIG_LIBNL20 */ 1827 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle); 1828 if (drv->nl_cache == NULL) { 1829 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 1830 "netlink cache"); 1831 goto err3; 1832 } 1833 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event); 1834 if (drv->nl_cache_event == NULL) { 1835 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 1836 "netlink cache (event)"); 1837 goto err3b; 1838 } 1839 #endif /* CONFIG_LIBNL20 */ 1840 1841 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211"); 1842 if (drv->nl80211 == NULL) { 1843 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 1844 "found"); 1845 goto err4; 1846 } 1847 1848 ret = nl_get_multicast_id(drv, "nl80211", "scan"); 1849 if (ret >= 0) 1850 ret = nl_socket_add_membership(drv->nl_handle_event, ret); 1851 if (ret < 0) { 1852 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 1853 "membership for scan events: %d (%s)", 1854 ret, strerror(-ret)); 1855 goto err4; 1856 } 1857 1858 ret = nl_get_multicast_id(drv, "nl80211", "mlme"); 1859 if (ret >= 0) 1860 ret = nl_socket_add_membership(drv->nl_handle_event, ret); 1861 if (ret < 0) { 1862 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 1863 "membership for mlme events: %d (%s)", 1864 ret, strerror(-ret)); 1865 goto err4; 1866 } 1867 1868 ret = nl_get_multicast_id(drv, "nl80211", "regulatory"); 1869 if (ret >= 0) 1870 ret = nl_socket_add_membership(drv->nl_handle_event, ret); 1871 if (ret < 0) { 1872 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 1873 "membership for regulatory events: %d (%s)", 1874 ret, strerror(-ret)); 1875 /* Continue without regulatory events */ 1876 } 1877 1878 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event), 1879 wpa_driver_nl80211_event_receive, drv, 1880 drv->nl_handle_event); 1881 1882 return 0; 1883 1884 err4: 1885 nl_cache_free(drv->nl_cache_event); 1886 err3b: 1887 nl_cache_free(drv->nl_cache); 1888 err3: 1889 nl80211_handle_destroy(drv->nl_handle_event); 1890 err2b: 1891 nl80211_handle_destroy(drv->nl_handle); 1892 err2: 1893 nl_cb_put(drv->nl_cb); 1894 err1: 1895 return -1; 1896 } 1897 1898 1899 static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 1900 { 1901 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 1902 /* 1903 * This may be for any interface; use ifdown event to disable 1904 * interface. 1905 */ 1906 } 1907 1908 1909 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 1910 { 1911 struct wpa_driver_nl80211_data *drv = ctx; 1912 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 1913 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) { 1914 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 1915 "after rfkill unblock"); 1916 return; 1917 } 1918 /* rtnetlink ifup handler will report interface as enabled */ 1919 } 1920 1921 1922 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv) 1923 { 1924 /* Find phy (radio) to which this interface belongs */ 1925 char buf[90], *pos; 1926 int f, rv; 1927 1928 drv->phyname[0] = '\0'; 1929 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name", 1930 drv->first_bss.ifname); 1931 f = open(buf, O_RDONLY); 1932 if (f < 0) { 1933 wpa_printf(MSG_DEBUG, "Could not open file %s: %s", 1934 buf, strerror(errno)); 1935 return; 1936 } 1937 1938 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1); 1939 close(f); 1940 if (rv < 0) { 1941 wpa_printf(MSG_DEBUG, "Could not read file %s: %s", 1942 buf, strerror(errno)); 1943 return; 1944 } 1945 1946 drv->phyname[rv] = '\0'; 1947 pos = os_strchr(drv->phyname, '\n'); 1948 if (pos) 1949 *pos = '\0'; 1950 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 1951 drv->first_bss.ifname, drv->phyname); 1952 } 1953 1954 1955 /** 1956 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 1957 * @ctx: context to be used when calling wpa_supplicant functions, 1958 * e.g., wpa_supplicant_event() 1959 * @ifname: interface name, e.g., wlan0 1960 * @global_priv: private driver global data from global_init() 1961 * Returns: Pointer to private data, %NULL on failure 1962 */ 1963 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 1964 void *global_priv) 1965 { 1966 struct wpa_driver_nl80211_data *drv; 1967 struct netlink_config *cfg; 1968 struct rfkill_config *rcfg; 1969 struct i802_bss *bss; 1970 1971 drv = os_zalloc(sizeof(*drv)); 1972 if (drv == NULL) 1973 return NULL; 1974 drv->global = global_priv; 1975 drv->ctx = ctx; 1976 bss = &drv->first_bss; 1977 bss->drv = drv; 1978 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 1979 drv->monitor_ifidx = -1; 1980 drv->monitor_sock = -1; 1981 drv->ioctl_sock = -1; 1982 1983 if (wpa_driver_nl80211_init_nl(drv)) { 1984 os_free(drv); 1985 return NULL; 1986 } 1987 1988 nl80211_get_phy_name(drv); 1989 1990 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 1991 if (drv->ioctl_sock < 0) { 1992 perror("socket(PF_INET,SOCK_DGRAM)"); 1993 goto failed; 1994 } 1995 1996 cfg = os_zalloc(sizeof(*cfg)); 1997 if (cfg == NULL) 1998 goto failed; 1999 cfg->ctx = drv; 2000 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink; 2001 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink; 2002 drv->netlink = netlink_init(cfg); 2003 if (drv->netlink == NULL) { 2004 os_free(cfg); 2005 goto failed; 2006 } 2007 2008 rcfg = os_zalloc(sizeof(*rcfg)); 2009 if (rcfg == NULL) 2010 goto failed; 2011 rcfg->ctx = drv; 2012 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 2013 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 2014 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 2015 drv->rfkill = rfkill_init(rcfg); 2016 if (drv->rfkill == NULL) { 2017 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 2018 os_free(rcfg); 2019 } 2020 2021 if (wpa_driver_nl80211_finish_drv_init(drv)) 2022 goto failed; 2023 2024 if (drv->global) 2025 dl_list_add(&drv->global->interfaces, &drv->list); 2026 2027 return bss; 2028 2029 failed: 2030 rfkill_deinit(drv->rfkill); 2031 netlink_deinit(drv->netlink); 2032 if (drv->ioctl_sock >= 0) 2033 close(drv->ioctl_sock); 2034 2035 genl_family_put(drv->nl80211); 2036 nl_cache_free(drv->nl_cache); 2037 nl80211_handle_destroy(drv->nl_handle); 2038 nl_cb_put(drv->nl_cb); 2039 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event)); 2040 2041 os_free(drv); 2042 return NULL; 2043 } 2044 2045 2046 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv, 2047 struct nl_handle *nl_handle, 2048 u16 type, const u8 *match, size_t match_len) 2049 { 2050 struct nl_msg *msg; 2051 int ret = -1; 2052 2053 msg = nlmsg_alloc(); 2054 if (!msg) 2055 return -1; 2056 2057 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 2058 NL80211_CMD_REGISTER_ACTION, 0); 2059 2060 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2061 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 2062 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 2063 2064 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL); 2065 msg = NULL; 2066 if (ret) { 2067 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 2068 "failed (type=%u): ret=%d (%s)", 2069 type, ret, strerror(-ret)); 2070 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 2071 match, match_len); 2072 goto nla_put_failure; 2073 } 2074 ret = 0; 2075 nla_put_failure: 2076 nlmsg_free(msg); 2077 return ret; 2078 } 2079 2080 2081 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv, 2082 const u8 *match, size_t match_len) 2083 { 2084 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 2085 return nl80211_register_frame(drv, drv->nl_handle_event, 2086 type, match, match_len); 2087 } 2088 2089 2090 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv) 2091 { 2092 #ifdef CONFIG_P2P 2093 /* GAS Initial Request */ 2094 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0) 2095 return -1; 2096 /* GAS Initial Response */ 2097 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0) 2098 return -1; 2099 /* GAS Comeback Request */ 2100 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0) 2101 return -1; 2102 /* GAS Comeback Response */ 2103 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0) 2104 return -1; 2105 /* P2P Public Action */ 2106 if (nl80211_register_action_frame(drv, 2107 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 2108 6) < 0) 2109 return -1; 2110 /* P2P Action */ 2111 if (nl80211_register_action_frame(drv, 2112 (u8 *) "\x7f\x50\x6f\x9a\x09", 2113 5) < 0) 2114 return -1; 2115 #endif /* CONFIG_P2P */ 2116 #ifdef CONFIG_IEEE80211W 2117 /* SA Query Response */ 2118 if (nl80211_register_action_frame(drv, (u8 *) "\x08\x01", 2) < 0) 2119 return -1; 2120 #endif /* CONFIG_IEEE80211W */ 2121 2122 /* FT Action frames */ 2123 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0) 2124 return -1; 2125 else 2126 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 2127 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 2128 2129 return 0; 2130 } 2131 2132 2133 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 2134 { 2135 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 2136 } 2137 2138 2139 static int 2140 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) 2141 { 2142 struct i802_bss *bss = &drv->first_bss; 2143 int send_rfkill_event = 0; 2144 2145 drv->ifindex = if_nametoindex(bss->ifname); 2146 drv->first_bss.ifindex = drv->ifindex; 2147 2148 #ifndef HOSTAPD 2149 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) { 2150 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to " 2151 "use managed mode"); 2152 } 2153 2154 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) { 2155 if (rfkill_is_blocked(drv->rfkill)) { 2156 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 2157 "interface '%s' due to rfkill", 2158 bss->ifname); 2159 drv->if_disabled = 1; 2160 send_rfkill_event = 1; 2161 } else { 2162 wpa_printf(MSG_ERROR, "nl80211: Could not set " 2163 "interface '%s' UP", bss->ifname); 2164 return -1; 2165 } 2166 } 2167 2168 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 2169 1, IF_OPER_DORMANT); 2170 #endif /* HOSTAPD */ 2171 2172 if (wpa_driver_nl80211_capa(drv)) 2173 return -1; 2174 2175 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, drv->addr)) 2176 return -1; 2177 2178 if (nl80211_register_action_frames(drv) < 0) { 2179 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action " 2180 "frame processing - ignore for now"); 2181 /* 2182 * Older kernel versions did not support this, so ignore the 2183 * error for now. Some functionality may not be available 2184 * because of this. 2185 */ 2186 } 2187 2188 if (send_rfkill_event) { 2189 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 2190 drv, drv->ctx); 2191 } 2192 2193 return 0; 2194 } 2195 2196 2197 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 2198 { 2199 struct nl_msg *msg; 2200 2201 msg = nlmsg_alloc(); 2202 if (!msg) 2203 return -ENOMEM; 2204 2205 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 2206 0, NL80211_CMD_DEL_BEACON, 0); 2207 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2208 2209 return send_and_recv_msgs(drv, msg, NULL, NULL); 2210 nla_put_failure: 2211 return -ENOBUFS; 2212 } 2213 2214 2215 /** 2216 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 2217 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() 2218 * 2219 * Shut down driver interface and processing of driver events. Free 2220 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 2221 */ 2222 static void wpa_driver_nl80211_deinit(void *priv) 2223 { 2224 struct i802_bss *bss = priv; 2225 struct wpa_driver_nl80211_data *drv = bss->drv; 2226 2227 if (drv->nl_handle_preq) 2228 wpa_driver_nl80211_probe_req_report(bss, 0); 2229 if (bss->added_if_into_bridge) { 2230 if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname) 2231 < 0) 2232 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 2233 "interface %s from bridge %s: %s", 2234 bss->ifname, bss->brname, strerror(errno)); 2235 } 2236 if (bss->added_bridge) { 2237 if (linux_br_del(drv->ioctl_sock, bss->brname) < 0) 2238 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 2239 "bridge %s: %s", 2240 bss->brname, strerror(errno)); 2241 } 2242 2243 nl80211_remove_monitor_interface(drv); 2244 2245 if (drv->nlmode == NL80211_IFTYPE_AP) 2246 wpa_driver_nl80211_del_beacon(drv); 2247 2248 #ifdef HOSTAPD 2249 if (drv->last_freq_ht) { 2250 /* Clear HT flags from the driver */ 2251 struct hostapd_freq_params freq; 2252 os_memset(&freq, 0, sizeof(freq)); 2253 freq.freq = drv->last_freq; 2254 i802_set_freq(priv, &freq); 2255 } 2256 2257 if (drv->eapol_sock >= 0) { 2258 eloop_unregister_read_sock(drv->eapol_sock); 2259 close(drv->eapol_sock); 2260 } 2261 2262 if (drv->if_indices != drv->default_if_indices) 2263 os_free(drv->if_indices); 2264 #endif /* HOSTAPD */ 2265 2266 if (drv->disable_11b_rates) 2267 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 2268 2269 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP); 2270 netlink_deinit(drv->netlink); 2271 rfkill_deinit(drv->rfkill); 2272 2273 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 2274 2275 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0); 2276 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA); 2277 2278 if (drv->ioctl_sock >= 0) 2279 close(drv->ioctl_sock); 2280 2281 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event)); 2282 genl_family_put(drv->nl80211); 2283 nl_cache_free(drv->nl_cache); 2284 nl_cache_free(drv->nl_cache_event); 2285 nl80211_handle_destroy(drv->nl_handle); 2286 nl80211_handle_destroy(drv->nl_handle_event); 2287 nl_cb_put(drv->nl_cb); 2288 2289 os_free(drv->filter_ssids); 2290 2291 if (drv->global) 2292 dl_list_del(&drv->list); 2293 2294 os_free(drv); 2295 } 2296 2297 2298 /** 2299 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 2300 * @eloop_ctx: Driver private data 2301 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 2302 * 2303 * This function can be used as registered timeout when starting a scan to 2304 * generate a scan completed event if the driver does not report this. 2305 */ 2306 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 2307 { 2308 struct wpa_driver_nl80211_data *drv = eloop_ctx; 2309 if (drv->ap_scan_as_station) { 2310 wpa_driver_nl80211_set_mode(&drv->first_bss, 2311 IEEE80211_MODE_AP); 2312 drv->ap_scan_as_station = 0; 2313 } 2314 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 2315 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 2316 } 2317 2318 2319 /** 2320 * wpa_driver_nl80211_scan - Request the driver to initiate scan 2321 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 2322 * @params: Scan parameters 2323 * Returns: 0 on success, -1 on failure 2324 */ 2325 static int wpa_driver_nl80211_scan(void *priv, 2326 struct wpa_driver_scan_params *params) 2327 { 2328 struct i802_bss *bss = priv; 2329 struct wpa_driver_nl80211_data *drv = bss->drv; 2330 int ret = 0, timeout; 2331 struct nl_msg *msg, *ssids, *freqs; 2332 size_t i; 2333 2334 msg = nlmsg_alloc(); 2335 ssids = nlmsg_alloc(); 2336 freqs = nlmsg_alloc(); 2337 if (!msg || !ssids || !freqs) { 2338 nlmsg_free(msg); 2339 nlmsg_free(ssids); 2340 nlmsg_free(freqs); 2341 return -1; 2342 } 2343 2344 os_free(drv->filter_ssids); 2345 drv->filter_ssids = params->filter_ssids; 2346 params->filter_ssids = NULL; 2347 drv->num_filter_ssids = params->num_filter_ssids; 2348 2349 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 2350 NL80211_CMD_TRIGGER_SCAN, 0); 2351 2352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2353 2354 for (i = 0; i < params->num_ssids; i++) { 2355 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 2356 params->ssids[i].ssid, 2357 params->ssids[i].ssid_len); 2358 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, 2359 params->ssids[i].ssid); 2360 } 2361 if (params->num_ssids) 2362 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); 2363 2364 if (params->extra_ies) { 2365 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs", 2366 params->extra_ies, params->extra_ies_len); 2367 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, 2368 params->extra_ies); 2369 } 2370 2371 if (params->freqs) { 2372 for (i = 0; params->freqs[i]; i++) { 2373 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 2374 "MHz", params->freqs[i]); 2375 NLA_PUT_U32(freqs, i + 1, params->freqs[i]); 2376 } 2377 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); 2378 } 2379 2380 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 2381 msg = NULL; 2382 if (ret) { 2383 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 2384 "(%s)", ret, strerror(-ret)); 2385 #ifdef HOSTAPD 2386 if (drv->nlmode == NL80211_IFTYPE_AP) { 2387 /* 2388 * mac80211 does not allow scan requests in AP mode, so 2389 * try to do this in station mode. 2390 */ 2391 if (wpa_driver_nl80211_set_mode(bss, 2392 IEEE80211_MODE_INFRA)) 2393 goto nla_put_failure; 2394 2395 if (wpa_driver_nl80211_scan(drv, params)) { 2396 wpa_driver_nl80211_set_mode(bss, 2397 IEEE80211_MODE_AP); 2398 goto nla_put_failure; 2399 } 2400 2401 /* Restore AP mode when processing scan results */ 2402 drv->ap_scan_as_station = 1; 2403 ret = 0; 2404 } else 2405 goto nla_put_failure; 2406 #else /* HOSTAPD */ 2407 goto nla_put_failure; 2408 #endif /* HOSTAPD */ 2409 } 2410 2411 /* Not all drivers generate "scan completed" wireless event, so try to 2412 * read results after a timeout. */ 2413 timeout = 10; 2414 if (drv->scan_complete_events) { 2415 /* 2416 * The driver seems to deliver events to notify when scan is 2417 * complete, so use longer timeout to avoid race conditions 2418 * with scanning and following association request. 2419 */ 2420 timeout = 30; 2421 } 2422 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 2423 "seconds", ret, timeout); 2424 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 2425 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 2426 drv, drv->ctx); 2427 2428 nla_put_failure: 2429 nlmsg_free(ssids); 2430 nlmsg_free(msg); 2431 nlmsg_free(freqs); 2432 return ret; 2433 } 2434 2435 2436 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 2437 { 2438 const u8 *end, *pos; 2439 2440 if (ies == NULL) 2441 return NULL; 2442 2443 pos = ies; 2444 end = ies + ies_len; 2445 2446 while (pos + 1 < end) { 2447 if (pos + 2 + pos[1] > end) 2448 break; 2449 if (pos[0] == ie) 2450 return pos; 2451 pos += 2 + pos[1]; 2452 } 2453 2454 return NULL; 2455 } 2456 2457 2458 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 2459 const u8 *ie, size_t ie_len) 2460 { 2461 const u8 *ssid; 2462 size_t i; 2463 2464 if (drv->filter_ssids == NULL) 2465 return 0; 2466 2467 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 2468 if (ssid == NULL) 2469 return 1; 2470 2471 for (i = 0; i < drv->num_filter_ssids; i++) { 2472 if (ssid[1] == drv->filter_ssids[i].ssid_len && 2473 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 2474 0) 2475 return 0; 2476 } 2477 2478 return 1; 2479 } 2480 2481 2482 static int bss_info_handler(struct nl_msg *msg, void *arg) 2483 { 2484 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2485 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2486 struct nlattr *bss[NL80211_BSS_MAX + 1]; 2487 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 2488 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 2489 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 2490 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 2491 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 2492 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 2493 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 2494 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 2495 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 2496 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 2497 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 2498 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 2499 }; 2500 struct nl80211_bss_info_arg *_arg = arg; 2501 struct wpa_scan_results *res = _arg->res; 2502 struct wpa_scan_res **tmp; 2503 struct wpa_scan_res *r; 2504 const u8 *ie, *beacon_ie; 2505 size_t ie_len, beacon_ie_len; 2506 u8 *pos; 2507 size_t i; 2508 2509 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2510 genlmsg_attrlen(gnlh, 0), NULL); 2511 if (!tb[NL80211_ATTR_BSS]) 2512 return NL_SKIP; 2513 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 2514 bss_policy)) 2515 return NL_SKIP; 2516 if (bss[NL80211_BSS_STATUS]) { 2517 enum nl80211_bss_status status; 2518 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 2519 if (status == NL80211_BSS_STATUS_ASSOCIATED && 2520 bss[NL80211_BSS_FREQUENCY]) { 2521 _arg->assoc_freq = 2522 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 2523 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 2524 _arg->assoc_freq); 2525 } 2526 } 2527 if (!res) 2528 return NL_SKIP; 2529 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 2530 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 2531 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 2532 } else { 2533 ie = NULL; 2534 ie_len = 0; 2535 } 2536 if (bss[NL80211_BSS_BEACON_IES]) { 2537 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 2538 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 2539 } else { 2540 beacon_ie = NULL; 2541 beacon_ie_len = 0; 2542 } 2543 2544 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 2545 ie ? ie_len : beacon_ie_len)) 2546 return NL_SKIP; 2547 2548 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 2549 if (r == NULL) 2550 return NL_SKIP; 2551 if (bss[NL80211_BSS_BSSID]) 2552 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 2553 ETH_ALEN); 2554 if (bss[NL80211_BSS_FREQUENCY]) 2555 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 2556 if (bss[NL80211_BSS_BEACON_INTERVAL]) 2557 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 2558 if (bss[NL80211_BSS_CAPABILITY]) 2559 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 2560 r->flags |= WPA_SCAN_NOISE_INVALID; 2561 if (bss[NL80211_BSS_SIGNAL_MBM]) { 2562 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 2563 r->level /= 100; /* mBm to dBm */ 2564 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 2565 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 2566 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 2567 r->flags |= WPA_SCAN_LEVEL_INVALID; 2568 } else 2569 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 2570 if (bss[NL80211_BSS_TSF]) 2571 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 2572 if (bss[NL80211_BSS_SEEN_MS_AGO]) 2573 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 2574 r->ie_len = ie_len; 2575 pos = (u8 *) (r + 1); 2576 if (ie) { 2577 os_memcpy(pos, ie, ie_len); 2578 pos += ie_len; 2579 } 2580 r->beacon_ie_len = beacon_ie_len; 2581 if (beacon_ie) 2582 os_memcpy(pos, beacon_ie, beacon_ie_len); 2583 2584 if (bss[NL80211_BSS_STATUS]) { 2585 enum nl80211_bss_status status; 2586 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 2587 switch (status) { 2588 case NL80211_BSS_STATUS_AUTHENTICATED: 2589 r->flags |= WPA_SCAN_AUTHENTICATED; 2590 break; 2591 case NL80211_BSS_STATUS_ASSOCIATED: 2592 r->flags |= WPA_SCAN_ASSOCIATED; 2593 break; 2594 default: 2595 break; 2596 } 2597 } 2598 2599 /* 2600 * cfg80211 maintains separate BSS table entries for APs if the same 2601 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 2602 * not use frequency as a separate key in the BSS table, so filter out 2603 * duplicated entries. Prefer associated BSS entry in such a case in 2604 * order to get the correct frequency into the BSS table. 2605 */ 2606 for (i = 0; i < res->num; i++) { 2607 const u8 *s1, *s2; 2608 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 2609 continue; 2610 2611 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 2612 res->res[i]->ie_len, WLAN_EID_SSID); 2613 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 2614 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 2615 os_memcmp(s1, s2, 2 + s1[1]) != 0) 2616 continue; 2617 2618 /* Same BSSID,SSID was already included in scan results */ 2619 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 2620 "for " MACSTR, MAC2STR(r->bssid)); 2621 2622 if ((r->flags & WPA_SCAN_ASSOCIATED) && 2623 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) { 2624 os_free(res->res[i]); 2625 res->res[i] = r; 2626 } else 2627 os_free(r); 2628 return NL_SKIP; 2629 } 2630 2631 tmp = os_realloc(res->res, 2632 (res->num + 1) * sizeof(struct wpa_scan_res *)); 2633 if (tmp == NULL) { 2634 os_free(r); 2635 return NL_SKIP; 2636 } 2637 tmp[res->num++] = r; 2638 res->res = tmp; 2639 2640 return NL_SKIP; 2641 } 2642 2643 2644 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 2645 const u8 *addr) 2646 { 2647 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 2648 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 2649 "mismatch (" MACSTR ")", MAC2STR(addr)); 2650 wpa_driver_nl80211_mlme(drv, addr, 2651 NL80211_CMD_DEAUTHENTICATE, 2652 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 2653 } 2654 } 2655 2656 2657 static void wpa_driver_nl80211_check_bss_status( 2658 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 2659 { 2660 size_t i; 2661 2662 for (i = 0; i < res->num; i++) { 2663 struct wpa_scan_res *r = res->res[i]; 2664 if (r->flags & WPA_SCAN_AUTHENTICATED) { 2665 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 2666 "indicates BSS status with " MACSTR 2667 " as authenticated", 2668 MAC2STR(r->bssid)); 2669 if (drv->nlmode == NL80211_IFTYPE_STATION && 2670 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 2671 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 2672 0) { 2673 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 2674 " in local state (auth=" MACSTR 2675 " assoc=" MACSTR ")", 2676 MAC2STR(drv->auth_bssid), 2677 MAC2STR(drv->bssid)); 2678 clear_state_mismatch(drv, r->bssid); 2679 } 2680 } 2681 2682 if (r->flags & WPA_SCAN_ASSOCIATED) { 2683 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 2684 "indicate BSS status with " MACSTR 2685 " as associated", 2686 MAC2STR(r->bssid)); 2687 if (drv->nlmode == NL80211_IFTYPE_STATION && 2688 !drv->associated) { 2689 wpa_printf(MSG_DEBUG, "nl80211: Local state " 2690 "(not associated) does not match " 2691 "with BSS state"); 2692 clear_state_mismatch(drv, r->bssid); 2693 } else if (drv->nlmode == NL80211_IFTYPE_STATION && 2694 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 2695 0) { 2696 wpa_printf(MSG_DEBUG, "nl80211: Local state " 2697 "(associated with " MACSTR ") does " 2698 "not match with BSS state", 2699 MAC2STR(drv->bssid)); 2700 clear_state_mismatch(drv, r->bssid); 2701 clear_state_mismatch(drv, drv->bssid); 2702 } 2703 } 2704 } 2705 } 2706 2707 2708 static void wpa_scan_results_free(struct wpa_scan_results *res) 2709 { 2710 size_t i; 2711 2712 if (res == NULL) 2713 return; 2714 2715 for (i = 0; i < res->num; i++) 2716 os_free(res->res[i]); 2717 os_free(res->res); 2718 os_free(res); 2719 } 2720 2721 2722 static struct wpa_scan_results * 2723 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv) 2724 { 2725 struct nl_msg *msg; 2726 struct wpa_scan_results *res; 2727 int ret; 2728 struct nl80211_bss_info_arg arg; 2729 2730 res = os_zalloc(sizeof(*res)); 2731 if (res == NULL) 2732 return NULL; 2733 msg = nlmsg_alloc(); 2734 if (!msg) 2735 goto nla_put_failure; 2736 2737 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP, 2738 NL80211_CMD_GET_SCAN, 0); 2739 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2740 2741 arg.drv = drv; 2742 arg.res = res; 2743 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 2744 msg = NULL; 2745 if (ret == 0) { 2746 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)", 2747 (unsigned long) res->num); 2748 return res; 2749 } 2750 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 2751 "(%s)", ret, strerror(-ret)); 2752 nla_put_failure: 2753 nlmsg_free(msg); 2754 wpa_scan_results_free(res); 2755 return NULL; 2756 } 2757 2758 2759 /** 2760 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results 2761 * @priv: Pointer to private wext data from wpa_driver_nl80211_init() 2762 * Returns: Scan results on success, -1 on failure 2763 */ 2764 static struct wpa_scan_results * 2765 wpa_driver_nl80211_get_scan_results(void *priv) 2766 { 2767 struct i802_bss *bss = priv; 2768 struct wpa_driver_nl80211_data *drv = bss->drv; 2769 struct wpa_scan_results *res; 2770 2771 res = nl80211_get_scan_results(drv); 2772 if (res) 2773 wpa_driver_nl80211_check_bss_status(drv, res); 2774 return res; 2775 } 2776 2777 2778 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv) 2779 { 2780 struct wpa_scan_results *res; 2781 size_t i; 2782 2783 res = nl80211_get_scan_results(drv); 2784 if (res == NULL) { 2785 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results"); 2786 return; 2787 } 2788 2789 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump"); 2790 for (i = 0; i < res->num; i++) { 2791 struct wpa_scan_res *r = res->res[i]; 2792 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s", 2793 (int) i, (int) res->num, MAC2STR(r->bssid), 2794 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "", 2795 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : ""); 2796 } 2797 2798 wpa_scan_results_free(res); 2799 } 2800 2801 2802 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv, 2803 enum wpa_alg alg, const u8 *addr, 2804 int key_idx, int set_tx, 2805 const u8 *seq, size_t seq_len, 2806 const u8 *key, size_t key_len) 2807 { 2808 struct i802_bss *bss = priv; 2809 struct wpa_driver_nl80211_data *drv = bss->drv; 2810 int ifindex = if_nametoindex(ifname); 2811 struct nl_msg *msg; 2812 int ret; 2813 2814 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d " 2815 "set_tx=%d seq_len=%lu key_len=%lu", 2816 __func__, ifindex, alg, addr, key_idx, set_tx, 2817 (unsigned long) seq_len, (unsigned long) key_len); 2818 2819 msg = nlmsg_alloc(); 2820 if (!msg) 2821 return -ENOMEM; 2822 2823 if (alg == WPA_ALG_NONE) { 2824 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 2825 0, NL80211_CMD_DEL_KEY, 0); 2826 } else { 2827 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 2828 0, NL80211_CMD_NEW_KEY, 0); 2829 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); 2830 switch (alg) { 2831 case WPA_ALG_WEP: 2832 if (key_len == 5) 2833 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 2834 WLAN_CIPHER_SUITE_WEP40); 2835 else 2836 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 2837 WLAN_CIPHER_SUITE_WEP104); 2838 break; 2839 case WPA_ALG_TKIP: 2840 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 2841 WLAN_CIPHER_SUITE_TKIP); 2842 break; 2843 case WPA_ALG_CCMP: 2844 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 2845 WLAN_CIPHER_SUITE_CCMP); 2846 break; 2847 case WPA_ALG_IGTK: 2848 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 2849 WLAN_CIPHER_SUITE_AES_CMAC); 2850 break; 2851 default: 2852 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 2853 "algorithm %d", __func__, alg); 2854 nlmsg_free(msg); 2855 return -1; 2856 } 2857 } 2858 2859 if (seq && seq_len) 2860 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq); 2861 2862 if (addr && !is_broadcast_ether_addr(addr)) { 2863 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); 2864 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 2865 2866 if (alg != WPA_ALG_WEP && key_idx && !set_tx) { 2867 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK"); 2868 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, 2869 NL80211_KEYTYPE_GROUP); 2870 } 2871 } else if (addr && is_broadcast_ether_addr(addr)) { 2872 struct nl_msg *types; 2873 int err; 2874 wpa_printf(MSG_DEBUG, " broadcast key"); 2875 types = nlmsg_alloc(); 2876 if (!types) 2877 goto nla_put_failure; 2878 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 2879 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 2880 types); 2881 nlmsg_free(types); 2882 if (err) 2883 goto nla_put_failure; 2884 } 2885 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 2886 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 2887 2888 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 2889 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE) 2890 ret = 0; 2891 if (ret) 2892 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)", 2893 ret, strerror(-ret)); 2894 2895 /* 2896 * If we failed or don't need to set the default TX key (below), 2897 * we're done here. 2898 */ 2899 if (ret || !set_tx || alg == WPA_ALG_NONE) 2900 return ret; 2901 if (drv->nlmode == NL80211_IFTYPE_AP && addr && 2902 !is_broadcast_ether_addr(addr)) 2903 return ret; 2904 2905 msg = nlmsg_alloc(); 2906 if (!msg) 2907 return -ENOMEM; 2908 2909 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 2910 0, NL80211_CMD_SET_KEY, 0); 2911 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); 2912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 2913 if (alg == WPA_ALG_IGTK) 2914 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT); 2915 else 2916 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); 2917 if (addr && is_broadcast_ether_addr(addr)) { 2918 struct nl_msg *types; 2919 int err; 2920 types = nlmsg_alloc(); 2921 if (!types) 2922 goto nla_put_failure; 2923 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST); 2924 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 2925 types); 2926 nlmsg_free(types); 2927 if (err) 2928 goto nla_put_failure; 2929 } else if (addr) { 2930 struct nl_msg *types; 2931 int err; 2932 types = nlmsg_alloc(); 2933 if (!types) 2934 goto nla_put_failure; 2935 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST); 2936 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES, 2937 types); 2938 nlmsg_free(types); 2939 if (err) 2940 goto nla_put_failure; 2941 } 2942 2943 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 2944 if (ret == -ENOENT) 2945 ret = 0; 2946 if (ret) 2947 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; " 2948 "err=%d %s)", ret, strerror(-ret)); 2949 return ret; 2950 2951 nla_put_failure: 2952 return -ENOBUFS; 2953 } 2954 2955 2956 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg, 2957 int key_idx, int defkey, 2958 const u8 *seq, size_t seq_len, 2959 const u8 *key, size_t key_len) 2960 { 2961 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY); 2962 if (!key_attr) 2963 return -1; 2964 2965 if (defkey && alg == WPA_ALG_IGTK) 2966 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT); 2967 else if (defkey) 2968 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 2969 2970 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx); 2971 2972 switch (alg) { 2973 case WPA_ALG_WEP: 2974 if (key_len == 5) 2975 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 2976 WLAN_CIPHER_SUITE_WEP40); 2977 else 2978 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 2979 WLAN_CIPHER_SUITE_WEP104); 2980 break; 2981 case WPA_ALG_TKIP: 2982 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP); 2983 break; 2984 case WPA_ALG_CCMP: 2985 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP); 2986 break; 2987 case WPA_ALG_IGTK: 2988 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 2989 WLAN_CIPHER_SUITE_AES_CMAC); 2990 break; 2991 default: 2992 wpa_printf(MSG_ERROR, "%s: Unsupported encryption " 2993 "algorithm %d", __func__, alg); 2994 return -1; 2995 } 2996 2997 if (seq && seq_len) 2998 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq); 2999 3000 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key); 3001 3002 nla_nest_end(msg, key_attr); 3003 3004 return 0; 3005 nla_put_failure: 3006 return -1; 3007 } 3008 3009 3010 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params, 3011 struct nl_msg *msg) 3012 { 3013 int i, privacy = 0; 3014 struct nlattr *nl_keys, *nl_key; 3015 3016 for (i = 0; i < 4; i++) { 3017 if (!params->wep_key[i]) 3018 continue; 3019 privacy = 1; 3020 break; 3021 } 3022 if (params->wps == WPS_MODE_PRIVACY) 3023 privacy = 1; 3024 if (params->pairwise_suite && 3025 params->pairwise_suite != WPA_CIPHER_NONE) 3026 privacy = 1; 3027 3028 if (!privacy) 3029 return 0; 3030 3031 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY); 3032 3033 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS); 3034 if (!nl_keys) 3035 goto nla_put_failure; 3036 3037 for (i = 0; i < 4; i++) { 3038 if (!params->wep_key[i]) 3039 continue; 3040 3041 nl_key = nla_nest_start(msg, i); 3042 if (!nl_key) 3043 goto nla_put_failure; 3044 3045 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i], 3046 params->wep_key[i]); 3047 if (params->wep_key_len[i] == 5) 3048 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 3049 WLAN_CIPHER_SUITE_WEP40); 3050 else 3051 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 3052 WLAN_CIPHER_SUITE_WEP104); 3053 3054 NLA_PUT_U8(msg, NL80211_KEY_IDX, i); 3055 3056 if (i == params->wep_tx_keyidx) 3057 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT); 3058 3059 nla_nest_end(msg, nl_key); 3060 } 3061 nla_nest_end(msg, nl_keys); 3062 3063 return 0; 3064 3065 nla_put_failure: 3066 return -ENOBUFS; 3067 } 3068 3069 3070 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 3071 const u8 *addr, int cmd, u16 reason_code, 3072 int local_state_change) 3073 { 3074 int ret = -1; 3075 struct nl_msg *msg; 3076 3077 msg = nlmsg_alloc(); 3078 if (!msg) 3079 return -1; 3080 3081 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0); 3082 3083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3084 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); 3085 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 3086 if (local_state_change) 3087 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 3088 3089 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3090 msg = NULL; 3091 if (ret) { 3092 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " 3093 "(%s)", ret, strerror(-ret)); 3094 goto nla_put_failure; 3095 } 3096 ret = 0; 3097 3098 nla_put_failure: 3099 nlmsg_free(msg); 3100 return ret; 3101 } 3102 3103 3104 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv, 3105 const u8 *addr, int reason_code) 3106 { 3107 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 3108 __func__, MAC2STR(addr), reason_code); 3109 drv->associated = 0; 3110 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT, 3111 reason_code, 0); 3112 } 3113 3114 3115 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, 3116 int reason_code) 3117 { 3118 struct i802_bss *bss = priv; 3119 struct wpa_driver_nl80211_data *drv = bss->drv; 3120 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 3121 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 3122 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)", 3123 __func__, MAC2STR(addr), reason_code); 3124 drv->associated = 0; 3125 if (drv->nlmode == NL80211_IFTYPE_ADHOC) 3126 return nl80211_leave_ibss(drv); 3127 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, 3128 reason_code, 0); 3129 } 3130 3131 3132 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, 3133 int reason_code) 3134 { 3135 struct i802_bss *bss = priv; 3136 struct wpa_driver_nl80211_data *drv = bss->drv; 3137 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) 3138 return wpa_driver_nl80211_disconnect(drv, addr, reason_code); 3139 wpa_printf(MSG_DEBUG, "%s", __func__); 3140 drv->associated = 0; 3141 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, 3142 reason_code, 0); 3143 } 3144 3145 3146 static int wpa_driver_nl80211_authenticate( 3147 void *priv, struct wpa_driver_auth_params *params) 3148 { 3149 struct i802_bss *bss = priv; 3150 struct wpa_driver_nl80211_data *drv = bss->drv; 3151 int ret = -1, i; 3152 struct nl_msg *msg; 3153 enum nl80211_auth_type type; 3154 int count = 0; 3155 3156 drv->associated = 0; 3157 os_memset(drv->auth_bssid, 0, ETH_ALEN); 3158 /* FIX: IBSS mode */ 3159 if (drv->nlmode != NL80211_IFTYPE_STATION && 3160 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0) 3161 return -1; 3162 3163 retry: 3164 msg = nlmsg_alloc(); 3165 if (!msg) 3166 return -1; 3167 3168 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", 3169 drv->ifindex); 3170 3171 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 3172 NL80211_CMD_AUTHENTICATE, 0); 3173 3174 for (i = 0; i < 4; i++) { 3175 if (!params->wep_key[i]) 3176 continue; 3177 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP, 3178 NULL, i, 3179 i == params->wep_tx_keyidx, NULL, 0, 3180 params->wep_key[i], 3181 params->wep_key_len[i]); 3182 if (params->wep_tx_keyidx != i) 3183 continue; 3184 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0, 3185 params->wep_key[i], params->wep_key_len[i])) { 3186 nlmsg_free(msg); 3187 return -1; 3188 } 3189 } 3190 3191 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3192 if (params->bssid) { 3193 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 3194 MAC2STR(params->bssid)); 3195 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 3196 } 3197 if (params->freq) { 3198 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 3199 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 3200 } 3201 if (params->ssid) { 3202 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 3203 params->ssid, params->ssid_len); 3204 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 3205 params->ssid); 3206 } 3207 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); 3208 if (params->ie) 3209 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); 3210 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 3211 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 3212 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 3213 type = NL80211_AUTHTYPE_SHARED_KEY; 3214 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 3215 type = NL80211_AUTHTYPE_NETWORK_EAP; 3216 else if (params->auth_alg & WPA_AUTH_ALG_FT) 3217 type = NL80211_AUTHTYPE_FT; 3218 else 3219 goto nla_put_failure; 3220 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 3221 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 3222 if (params->local_state_change) { 3223 wpa_printf(MSG_DEBUG, " * Local state change only"); 3224 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE); 3225 } 3226 3227 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3228 msg = NULL; 3229 if (ret) { 3230 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " 3231 "(%s)", ret, strerror(-ret)); 3232 count++; 3233 if (ret == -EALREADY && count == 1 && params->bssid && 3234 !params->local_state_change) { 3235 /* 3236 * mac80211 does not currently accept new 3237 * authentication if we are already authenticated. As a 3238 * workaround, force deauthentication and try again. 3239 */ 3240 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication " 3241 "after forced deauthentication"); 3242 wpa_driver_nl80211_deauthenticate( 3243 bss, params->bssid, 3244 WLAN_REASON_PREV_AUTH_NOT_VALID); 3245 nlmsg_free(msg); 3246 goto retry; 3247 } 3248 goto nla_put_failure; 3249 } 3250 ret = 0; 3251 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " 3252 "successfully"); 3253 3254 nla_put_failure: 3255 nlmsg_free(msg); 3256 return ret; 3257 } 3258 3259 3260 struct phy_info_arg { 3261 u16 *num_modes; 3262 struct hostapd_hw_modes *modes; 3263 }; 3264 3265 static int phy_info_handler(struct nl_msg *msg, void *arg) 3266 { 3267 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 3268 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3269 struct phy_info_arg *phy_info = arg; 3270 3271 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 3272 3273 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 3274 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 3275 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 3276 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 3277 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 3278 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 3279 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 3280 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 3281 }; 3282 3283 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 3284 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 3285 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 3286 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG }, 3287 }; 3288 3289 struct nlattr *nl_band; 3290 struct nlattr *nl_freq; 3291 struct nlattr *nl_rate; 3292 int rem_band, rem_freq, rem_rate; 3293 struct hostapd_hw_modes *mode; 3294 int idx, mode_is_set; 3295 3296 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3297 genlmsg_attrlen(gnlh, 0), NULL); 3298 3299 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 3300 return NL_SKIP; 3301 3302 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { 3303 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode)); 3304 if (!mode) 3305 return NL_SKIP; 3306 phy_info->modes = mode; 3307 3308 mode_is_set = 0; 3309 3310 mode = &phy_info->modes[*(phy_info->num_modes)]; 3311 memset(mode, 0, sizeof(*mode)); 3312 *(phy_info->num_modes) += 1; 3313 3314 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 3315 nla_len(nl_band), NULL); 3316 3317 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) { 3318 mode->ht_capab = nla_get_u16( 3319 tb_band[NL80211_BAND_ATTR_HT_CAPA]); 3320 } 3321 3322 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) { 3323 mode->a_mpdu_params |= nla_get_u8( 3324 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 3325 0x03; 3326 } 3327 3328 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) { 3329 mode->a_mpdu_params |= nla_get_u8( 3330 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 3331 2; 3332 } 3333 3334 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] && 3335 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) { 3336 u8 *mcs; 3337 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 3338 os_memcpy(mode->mcs_set, mcs, 16); 3339 } 3340 3341 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 3342 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 3343 nla_len(nl_freq), freq_policy); 3344 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 3345 continue; 3346 mode->num_channels++; 3347 } 3348 3349 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data)); 3350 if (!mode->channels) 3351 return NL_SKIP; 3352 3353 idx = 0; 3354 3355 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { 3356 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq), 3357 nla_len(nl_freq), freq_policy); 3358 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 3359 continue; 3360 3361 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 3362 mode->channels[idx].flag = 0; 3363 3364 if (!mode_is_set) { 3365 /* crude heuristic */ 3366 if (mode->channels[idx].freq < 4000) 3367 mode->mode = HOSTAPD_MODE_IEEE80211B; 3368 else 3369 mode->mode = HOSTAPD_MODE_IEEE80211A; 3370 mode_is_set = 1; 3371 } 3372 3373 /* crude heuristic */ 3374 if (mode->channels[idx].freq < 4000) 3375 if (mode->channels[idx].freq == 2484) 3376 mode->channels[idx].chan = 14; 3377 else 3378 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5; 3379 else 3380 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000; 3381 3382 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 3383 mode->channels[idx].flag |= 3384 HOSTAPD_CHAN_DISABLED; 3385 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) 3386 mode->channels[idx].flag |= 3387 HOSTAPD_CHAN_PASSIVE_SCAN; 3388 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS]) 3389 mode->channels[idx].flag |= 3390 HOSTAPD_CHAN_NO_IBSS; 3391 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 3392 mode->channels[idx].flag |= 3393 HOSTAPD_CHAN_RADAR; 3394 3395 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] && 3396 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 3397 mode->channels[idx].max_tx_power = 3398 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100; 3399 3400 idx++; 3401 } 3402 3403 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 3404 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 3405 nla_len(nl_rate), rate_policy); 3406 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 3407 continue; 3408 mode->num_rates++; 3409 } 3410 3411 mode->rates = os_zalloc(mode->num_rates * sizeof(int)); 3412 if (!mode->rates) 3413 return NL_SKIP; 3414 3415 idx = 0; 3416 3417 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) { 3418 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate), 3419 nla_len(nl_rate), rate_policy); 3420 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 3421 continue; 3422 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]); 3423 3424 /* crude heuristic */ 3425 if (mode->mode == HOSTAPD_MODE_IEEE80211B && 3426 mode->rates[idx] > 200) 3427 mode->mode = HOSTAPD_MODE_IEEE80211G; 3428 3429 idx++; 3430 } 3431 } 3432 3433 return NL_SKIP; 3434 } 3435 3436 static struct hostapd_hw_modes * 3437 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes) 3438 { 3439 u16 m; 3440 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 3441 int i, mode11g_idx = -1; 3442 3443 /* If only 802.11g mode is included, use it to construct matching 3444 * 802.11b mode data. */ 3445 3446 for (m = 0; m < *num_modes; m++) { 3447 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 3448 return modes; /* 802.11b already included */ 3449 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 3450 mode11g_idx = m; 3451 } 3452 3453 if (mode11g_idx < 0) 3454 return modes; /* 2.4 GHz band not supported at all */ 3455 3456 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes)); 3457 if (nmodes == NULL) 3458 return modes; /* Could not add 802.11b mode */ 3459 3460 mode = &nmodes[*num_modes]; 3461 os_memset(mode, 0, sizeof(*mode)); 3462 (*num_modes)++; 3463 modes = nmodes; 3464 3465 mode->mode = HOSTAPD_MODE_IEEE80211B; 3466 3467 mode11g = &modes[mode11g_idx]; 3468 mode->num_channels = mode11g->num_channels; 3469 mode->channels = os_malloc(mode11g->num_channels * 3470 sizeof(struct hostapd_channel_data)); 3471 if (mode->channels == NULL) { 3472 (*num_modes)--; 3473 return modes; /* Could not add 802.11b mode */ 3474 } 3475 os_memcpy(mode->channels, mode11g->channels, 3476 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 3477 3478 mode->num_rates = 0; 3479 mode->rates = os_malloc(4 * sizeof(int)); 3480 if (mode->rates == NULL) { 3481 os_free(mode->channels); 3482 (*num_modes)--; 3483 return modes; /* Could not add 802.11b mode */ 3484 } 3485 3486 for (i = 0; i < mode11g->num_rates; i++) { 3487 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 3488 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 3489 continue; 3490 mode->rates[mode->num_rates] = mode11g->rates[i]; 3491 mode->num_rates++; 3492 if (mode->num_rates == 4) 3493 break; 3494 } 3495 3496 if (mode->num_rates == 0) { 3497 os_free(mode->channels); 3498 os_free(mode->rates); 3499 (*num_modes)--; 3500 return modes; /* No 802.11b rates */ 3501 } 3502 3503 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 3504 "information"); 3505 3506 return modes; 3507 } 3508 3509 3510 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 3511 int end) 3512 { 3513 int c; 3514 3515 for (c = 0; c < mode->num_channels; c++) { 3516 struct hostapd_channel_data *chan = &mode->channels[c]; 3517 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 3518 chan->flag |= HOSTAPD_CHAN_HT40; 3519 } 3520 } 3521 3522 3523 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 3524 int end) 3525 { 3526 int c; 3527 3528 for (c = 0; c < mode->num_channels; c++) { 3529 struct hostapd_channel_data *chan = &mode->channels[c]; 3530 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 3531 continue; 3532 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 3533 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 3534 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 3535 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 3536 } 3537 } 3538 3539 3540 static void nl80211_reg_rule_ht40(struct nlattr *tb[], 3541 struct phy_info_arg *results) 3542 { 3543 u32 start, end, max_bw; 3544 u16 m; 3545 3546 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 3547 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 3548 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 3549 return; 3550 3551 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 3552 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 3553 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 3554 3555 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz", 3556 start, end, max_bw); 3557 if (max_bw < 40) 3558 return; 3559 3560 for (m = 0; m < *results->num_modes; m++) { 3561 if (!(results->modes[m].ht_capab & 3562 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 3563 continue; 3564 nl80211_set_ht40_mode(&results->modes[m], start, end); 3565 } 3566 } 3567 3568 3569 static void nl80211_reg_rule_sec(struct nlattr *tb[], 3570 struct phy_info_arg *results) 3571 { 3572 u32 start, end, max_bw; 3573 u16 m; 3574 3575 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 3576 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 3577 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 3578 return; 3579 3580 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 3581 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 3582 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 3583 3584 if (max_bw < 20) 3585 return; 3586 3587 for (m = 0; m < *results->num_modes; m++) { 3588 if (!(results->modes[m].ht_capab & 3589 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 3590 continue; 3591 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 3592 } 3593 } 3594 3595 3596 static int nl80211_get_reg(struct nl_msg *msg, void *arg) 3597 { 3598 struct phy_info_arg *results = arg; 3599 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 3600 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3601 struct nlattr *nl_rule; 3602 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 3603 int rem_rule; 3604 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 3605 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 3606 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 3607 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 3608 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 3609 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 3610 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 3611 }; 3612 3613 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3614 genlmsg_attrlen(gnlh, 0), NULL); 3615 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 3616 !tb_msg[NL80211_ATTR_REG_RULES]) { 3617 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 3618 "available"); 3619 return NL_SKIP; 3620 } 3621 3622 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 3623 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 3624 3625 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 3626 { 3627 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 3628 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 3629 nl80211_reg_rule_ht40(tb_rule, results); 3630 } 3631 3632 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 3633 { 3634 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 3635 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 3636 nl80211_reg_rule_sec(tb_rule, results); 3637 } 3638 3639 return NL_SKIP; 3640 } 3641 3642 3643 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv, 3644 struct phy_info_arg *results) 3645 { 3646 struct nl_msg *msg; 3647 3648 msg = nlmsg_alloc(); 3649 if (!msg) 3650 return -ENOMEM; 3651 3652 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3653 0, NL80211_CMD_GET_REG, 0); 3654 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 3655 } 3656 3657 3658 static struct hostapd_hw_modes * 3659 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 3660 { 3661 struct i802_bss *bss = priv; 3662 struct wpa_driver_nl80211_data *drv = bss->drv; 3663 struct nl_msg *msg; 3664 struct phy_info_arg result = { 3665 .num_modes = num_modes, 3666 .modes = NULL, 3667 }; 3668 3669 *num_modes = 0; 3670 *flags = 0; 3671 3672 msg = nlmsg_alloc(); 3673 if (!msg) 3674 return NULL; 3675 3676 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3677 0, NL80211_CMD_GET_WIPHY, 0); 3678 3679 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3680 3681 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 3682 nl80211_set_ht40_flags(drv, &result); 3683 return wpa_driver_nl80211_add_11b(result.modes, num_modes); 3684 } 3685 nla_put_failure: 3686 return NULL; 3687 } 3688 3689 3690 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv, 3691 const void *data, size_t len, 3692 int encrypt) 3693 { 3694 __u8 rtap_hdr[] = { 3695 0x00, 0x00, /* radiotap version */ 3696 0x0e, 0x00, /* radiotap length */ 3697 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */ 3698 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */ 3699 0x00, /* padding */ 3700 0x00, 0x00, /* RX and TX flags to indicate that */ 3701 0x00, 0x00, /* this is the injected frame directly */ 3702 }; 3703 struct iovec iov[2] = { 3704 { 3705 .iov_base = &rtap_hdr, 3706 .iov_len = sizeof(rtap_hdr), 3707 }, 3708 { 3709 .iov_base = (void *) data, 3710 .iov_len = len, 3711 } 3712 }; 3713 struct msghdr msg = { 3714 .msg_name = NULL, 3715 .msg_namelen = 0, 3716 .msg_iov = iov, 3717 .msg_iovlen = 2, 3718 .msg_control = NULL, 3719 .msg_controllen = 0, 3720 .msg_flags = 0, 3721 }; 3722 int res; 3723 3724 if (encrypt) 3725 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP; 3726 3727 if (drv->monitor_sock < 0) { 3728 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available " 3729 "for %s", __func__); 3730 return -1; 3731 } 3732 3733 res = sendmsg(drv->monitor_sock, &msg, 0); 3734 if (res < 0) { 3735 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno)); 3736 return -1; 3737 } 3738 return 0; 3739 } 3740 3741 3742 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data, 3743 size_t data_len) 3744 { 3745 struct i802_bss *bss = priv; 3746 struct wpa_driver_nl80211_data *drv = bss->drv; 3747 struct ieee80211_mgmt *mgmt; 3748 int encrypt = 1; 3749 u16 fc; 3750 3751 mgmt = (struct ieee80211_mgmt *) data; 3752 fc = le_to_host16(mgmt->frame_control); 3753 if (drv->nlmode == NL80211_IFTYPE_STATION && 3754 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3755 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) { 3756 /* 3757 * The use of last_mgmt_freq is a bit of a hack, 3758 * but it works due to the single-threaded nature 3759 * of wpa_supplicant. 3760 */ 3761 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq, 0, 3762 data, data_len, NULL); 3763 } 3764 #ifdef ANDROID_BRCM_P2P_PATCH 3765 if (drv->nlmode == NL80211_IFTYPE_AP) { 3766 wpa_printf(MSG_DEBUG, "%s: Sending frame on ap_oper_freq %d using nl80211_send_frame_cmd", __func__, drv->ap_oper_freq); 3767 return nl80211_send_frame_cmd(drv, drv->ap_oper_freq, 0, 3768 data, data_len, &drv->send_action_cookie); 3769 } 3770 #else 3771 if (drv->no_monitor_iface_capab && drv->nlmode == NL80211_IFTYPE_AP ) { 3772 return nl80211_send_frame_cmd(drv, drv->ap_oper_freq, 0, 3773 data, data_len, NULL); 3774 } 3775 #endif 3776 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3777 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) { 3778 /* 3779 * Only one of the authentication frame types is encrypted. 3780 * In order for static WEP encryption to work properly (i.e., 3781 * to not encrypt the frame), we need to tell mac80211 about 3782 * the frames that must not be encrypted. 3783 */ 3784 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg); 3785 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction); 3786 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3) 3787 encrypt = 0; 3788 } 3789 wpa_printf(MSG_DEBUG, "%s: Sending frame using monitor interface/l2 socket", __func__); 3790 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt); 3791 } 3792 3793 3794 static int wpa_driver_nl80211_set_beacon(void *priv, 3795 const u8 *head, size_t head_len, 3796 const u8 *tail, size_t tail_len, 3797 int dtim_period, int beacon_int) 3798 { 3799 struct i802_bss *bss = priv; 3800 struct wpa_driver_nl80211_data *drv = bss->drv; 3801 struct nl_msg *msg; 3802 u8 cmd = NL80211_CMD_NEW_BEACON; 3803 int ret; 3804 int beacon_set; 3805 int ifindex = if_nametoindex(bss->ifname); 3806 beacon_set = bss->beacon_set; 3807 3808 msg = nlmsg_alloc(); 3809 if (!msg) 3810 return -ENOMEM; 3811 3812 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)", 3813 beacon_set); 3814 if (beacon_set) 3815 cmd = NL80211_CMD_SET_BEACON; 3816 3817 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3818 0, cmd, 0); 3819 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head); 3820 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail); 3821 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 3822 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int); 3823 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period); 3824 3825 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3826 if (ret) { 3827 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)", 3828 ret, strerror(-ret)); 3829 } else { 3830 bss->beacon_set = 1; 3831 } 3832 #if defined(ANDROID_BRCM_P2P_PATCH) && defined(HOSTAPD) 3833 wpa_driver_nl80211_probe_req_report(priv, 1); 3834 #endif 3835 return ret; 3836 nla_put_failure: 3837 return -ENOBUFS; 3838 } 3839 3840 3841 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv, 3842 int freq, int ht_enabled, 3843 int sec_channel_offset) 3844 { 3845 struct nl_msg *msg; 3846 int ret; 3847 3848 msg = nlmsg_alloc(); 3849 if (!msg) 3850 return -1; 3851 3852 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 3853 NL80211_CMD_SET_WIPHY, 0); 3854 3855 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3856 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 3857 if (ht_enabled) { 3858 switch (sec_channel_offset) { 3859 case -1: 3860 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 3861 NL80211_CHAN_HT40MINUS); 3862 break; 3863 case 1: 3864 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 3865 NL80211_CHAN_HT40PLUS); 3866 break; 3867 default: 3868 #ifndef ANDROID_BRCM_P2P_PATCH 3869 /* Should be change to HT20 as a default value because P2P firmware does not support 11n for BCM4329 */ 3870 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 3871 NL80211_CHAN_HT20); 3872 #else 3873 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 3874 NL80211_CHAN_NO_HT); 3875 #endif 3876 break; 3877 } 3878 } 3879 3880 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3881 if (ret == 0) 3882 return 0; 3883 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): " 3884 "%d (%s)", freq, ret, strerror(-ret)); 3885 nla_put_failure: 3886 return -1; 3887 } 3888 3889 3890 static int wpa_driver_nl80211_sta_add(void *priv, 3891 struct hostapd_sta_add_params *params) 3892 { 3893 struct i802_bss *bss = priv; 3894 struct wpa_driver_nl80211_data *drv = bss->drv; 3895 struct nl_msg *msg; 3896 int ret = -ENOBUFS; 3897 3898 msg = nlmsg_alloc(); 3899 if (!msg) 3900 return -ENOMEM; 3901 3902 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3903 0, NL80211_CMD_NEW_STATION, 0); 3904 3905 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 3906 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr); 3907 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid); 3908 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len, 3909 params->supp_rates); 3910 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 3911 params->listen_interval); 3912 if (params->ht_capabilities) { 3913 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, 3914 sizeof(*params->ht_capabilities), 3915 params->ht_capabilities); 3916 } 3917 3918 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3919 if (ret) 3920 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION " 3921 "result: %d (%s)", ret, strerror(-ret)); 3922 if (ret == -EEXIST) 3923 ret = 0; 3924 nla_put_failure: 3925 return ret; 3926 } 3927 3928 3929 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr) 3930 { 3931 struct i802_bss *bss = priv; 3932 struct wpa_driver_nl80211_data *drv = bss->drv; 3933 struct nl_msg *msg; 3934 int ret; 3935 3936 msg = nlmsg_alloc(); 3937 if (!msg) 3938 return -ENOMEM; 3939 3940 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3941 0, NL80211_CMD_DEL_STATION, 0); 3942 3943 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 3944 if_nametoindex(bss->ifname)); 3945 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 3946 3947 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 3948 if (ret == -ENOENT) 3949 return 0; 3950 return ret; 3951 nla_put_failure: 3952 return -ENOBUFS; 3953 } 3954 3955 3956 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, 3957 int ifidx) 3958 { 3959 struct nl_msg *msg; 3960 3961 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx); 3962 3963 #ifdef HOSTAPD 3964 /* stop listening for EAPOL on this interface */ 3965 del_ifidx(drv, ifidx); 3966 #endif /* HOSTAPD */ 3967 3968 msg = nlmsg_alloc(); 3969 if (!msg) 3970 goto nla_put_failure; 3971 3972 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3973 0, NL80211_CMD_DEL_INTERFACE, 0); 3974 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx); 3975 3976 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 3977 return; 3978 nla_put_failure: 3979 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx); 3980 } 3981 3982 3983 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv, 3984 const char *ifname, 3985 enum nl80211_iftype iftype, 3986 const u8 *addr, int wds) 3987 { 3988 struct nl_msg *msg, *flags = NULL; 3989 int ifidx; 3990 int ret = -ENOBUFS; 3991 3992 msg = nlmsg_alloc(); 3993 if (!msg) 3994 return -1; 3995 3996 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 3997 0, NL80211_CMD_NEW_INTERFACE, 0); 3998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 3999 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname); 4000 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype); 4001 4002 if (iftype == NL80211_IFTYPE_MONITOR) { 4003 int err; 4004 4005 flags = nlmsg_alloc(); 4006 if (!flags) 4007 goto nla_put_failure; 4008 4009 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES); 4010 4011 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); 4012 4013 nlmsg_free(flags); 4014 4015 if (err) 4016 goto nla_put_failure; 4017 } else if (wds) { 4018 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds); 4019 } 4020 4021 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4022 if (ret) { 4023 nla_put_failure: 4024 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)", 4025 ifname, ret, strerror(-ret)); 4026 return ret; 4027 } 4028 4029 ifidx = if_nametoindex(ifname); 4030 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d", 4031 ifname, ifidx); 4032 4033 if (ifidx <= 0) 4034 return -1; 4035 4036 #ifdef HOSTAPD 4037 /* start listening for EAPOL on this interface */ 4038 add_ifidx(drv, ifidx); 4039 #endif /* HOSTAPD */ 4040 4041 if (addr && iftype != NL80211_IFTYPE_MONITOR && 4042 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) { 4043 nl80211_remove_iface(drv, ifidx); 4044 return -1; 4045 } 4046 4047 return ifidx; 4048 } 4049 4050 4051 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv, 4052 const char *ifname, enum nl80211_iftype iftype, 4053 const u8 *addr, int wds) 4054 { 4055 int ret; 4056 4057 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds); 4058 4059 /* if error occured and interface exists already */ 4060 if (ret == -ENFILE && if_nametoindex(ifname)) { 4061 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname); 4062 4063 /* Try to remove the interface that was already there. */ 4064 nl80211_remove_iface(drv, if_nametoindex(ifname)); 4065 4066 /* Try to create the interface again */ 4067 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, 4068 wds); 4069 } 4070 4071 if (ret >= 0 && drv->disable_11b_rates) 4072 nl80211_disable_11b_rates(drv, ret, 1); 4073 4074 return ret; 4075 } 4076 4077 4078 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok) 4079 { 4080 struct ieee80211_hdr *hdr; 4081 u16 fc; 4082 union wpa_event_data event; 4083 4084 hdr = (struct ieee80211_hdr *) buf; 4085 fc = le_to_host16(hdr->frame_control); 4086 4087 os_memset(&event, 0, sizeof(event)); 4088 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 4089 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 4090 event.tx_status.dst = hdr->addr1; 4091 event.tx_status.data = buf; 4092 event.tx_status.data_len = len; 4093 event.tx_status.ack = ok; 4094 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event); 4095 } 4096 4097 4098 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv, 4099 u8 *buf, size_t len) 4100 { 4101 union wpa_event_data event; 4102 os_memset(&event, 0, sizeof(event)); 4103 event.rx_from_unknown.frame = buf; 4104 event.rx_from_unknown.len = len; 4105 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 4106 } 4107 4108 4109 static void handle_frame(struct wpa_driver_nl80211_data *drv, 4110 u8 *buf, size_t len, int datarate, int ssi_signal) 4111 { 4112 struct ieee80211_hdr *hdr; 4113 u16 fc; 4114 union wpa_event_data event; 4115 4116 hdr = (struct ieee80211_hdr *) buf; 4117 fc = le_to_host16(hdr->frame_control); 4118 4119 switch (WLAN_FC_GET_TYPE(fc)) { 4120 case WLAN_FC_TYPE_MGMT: 4121 os_memset(&event, 0, sizeof(event)); 4122 event.rx_mgmt.frame = buf; 4123 event.rx_mgmt.frame_len = len; 4124 event.rx_mgmt.datarate = datarate; 4125 event.rx_mgmt.ssi_signal = ssi_signal; 4126 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 4127 break; 4128 case WLAN_FC_TYPE_CTRL: 4129 /* can only get here with PS-Poll frames */ 4130 wpa_printf(MSG_DEBUG, "CTRL"); 4131 from_unknown_sta(drv, buf, len); 4132 break; 4133 case WLAN_FC_TYPE_DATA: 4134 from_unknown_sta(drv, buf, len); 4135 break; 4136 } 4137 } 4138 4139 4140 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx) 4141 { 4142 struct wpa_driver_nl80211_data *drv = eloop_ctx; 4143 int len; 4144 unsigned char buf[3000]; 4145 struct ieee80211_radiotap_iterator iter; 4146 int ret; 4147 int datarate = 0, ssi_signal = 0; 4148 int injected = 0, failed = 0, rxflags = 0; 4149 4150 len = recv(sock, buf, sizeof(buf), 0); 4151 if (len < 0) { 4152 perror("recv"); 4153 return; 4154 } 4155 4156 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) { 4157 printf("received invalid radiotap frame\n"); 4158 return; 4159 } 4160 4161 while (1) { 4162 ret = ieee80211_radiotap_iterator_next(&iter); 4163 if (ret == -ENOENT) 4164 break; 4165 if (ret) { 4166 printf("received invalid radiotap frame (%d)\n", ret); 4167 return; 4168 } 4169 switch (iter.this_arg_index) { 4170 case IEEE80211_RADIOTAP_FLAGS: 4171 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS) 4172 len -= 4; 4173 break; 4174 case IEEE80211_RADIOTAP_RX_FLAGS: 4175 rxflags = 1; 4176 break; 4177 case IEEE80211_RADIOTAP_TX_FLAGS: 4178 injected = 1; 4179 failed = le_to_host16((*(uint16_t *) iter.this_arg)) & 4180 IEEE80211_RADIOTAP_F_TX_FAIL; 4181 break; 4182 case IEEE80211_RADIOTAP_DATA_RETRIES: 4183 break; 4184 case IEEE80211_RADIOTAP_CHANNEL: 4185 /* TODO: convert from freq/flags to channel number */ 4186 break; 4187 case IEEE80211_RADIOTAP_RATE: 4188 datarate = *iter.this_arg * 5; 4189 break; 4190 case IEEE80211_RADIOTAP_DB_ANTSIGNAL: 4191 ssi_signal = *iter.this_arg; 4192 break; 4193 } 4194 } 4195 4196 if (rxflags && injected) 4197 return; 4198 4199 if (!injected) 4200 handle_frame(drv, buf + iter.max_length, 4201 len - iter.max_length, datarate, ssi_signal); 4202 else 4203 handle_tx_callback(drv->ctx, buf + iter.max_length, 4204 len - iter.max_length, !failed); 4205 } 4206 4207 4208 /* 4209 * we post-process the filter code later and rewrite 4210 * this to the offset to the last instruction 4211 */ 4212 #define PASS 0xFF 4213 #define FAIL 0xFE 4214 4215 static struct sock_filter msock_filter_insns[] = { 4216 /* 4217 * do a little-endian load of the radiotap length field 4218 */ 4219 /* load lower byte into A */ 4220 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2), 4221 /* put it into X (== index register) */ 4222 BPF_STMT(BPF_MISC| BPF_TAX, 0), 4223 /* load upper byte into A */ 4224 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3), 4225 /* left-shift it by 8 */ 4226 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8), 4227 /* or with X */ 4228 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0), 4229 /* put result into X */ 4230 BPF_STMT(BPF_MISC| BPF_TAX, 0), 4231 4232 /* 4233 * Allow management frames through, this also gives us those 4234 * management frames that we sent ourselves with status 4235 */ 4236 /* load the lower byte of the IEEE 802.11 frame control field */ 4237 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 4238 /* mask off frame type and version */ 4239 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF), 4240 /* accept frame if it's both 0, fall through otherwise */ 4241 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0), 4242 4243 /* 4244 * TODO: add a bit to radiotap RX flags that indicates 4245 * that the sending station is not associated, then 4246 * add a filter here that filters on our DA and that flag 4247 * to allow us to deauth frames to that bad station. 4248 * 4249 * For now allow all To DS data frames through. 4250 */ 4251 /* load the IEEE 802.11 frame control field */ 4252 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0), 4253 /* mask off frame type, version and DS status */ 4254 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03), 4255 /* accept frame if version 0, type 2 and To DS, fall through otherwise 4256 */ 4257 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0), 4258 4259 #if 0 4260 /* 4261 * drop non-data frames 4262 */ 4263 /* load the lower byte of the frame control field */ 4264 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 4265 /* mask off QoS bit */ 4266 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), 4267 /* drop non-data frames */ 4268 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL), 4269 #endif 4270 /* load the upper byte of the frame control field */ 4271 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1), 4272 /* mask off toDS/fromDS */ 4273 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), 4274 /* accept WDS frames */ 4275 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0), 4276 4277 /* 4278 * add header length to index 4279 */ 4280 /* load the lower byte of the frame control field */ 4281 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), 4282 /* mask off QoS bit */ 4283 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), 4284 /* right shift it by 6 to give 0 or 2 */ 4285 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), 4286 /* add data frame header length */ 4287 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), 4288 /* add index, was start of 802.11 header */ 4289 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), 4290 /* move to index, now start of LL header */ 4291 BPF_STMT(BPF_MISC | BPF_TAX, 0), 4292 4293 /* 4294 * Accept empty data frames, we use those for 4295 * polling activity. 4296 */ 4297 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0), 4298 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0), 4299 4300 /* 4301 * Accept EAPOL frames 4302 */ 4303 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), 4304 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL), 4305 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), 4306 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL), 4307 4308 /* keep these last two statements or change the code below */ 4309 /* return 0 == "DROP" */ 4310 BPF_STMT(BPF_RET | BPF_K, 0), 4311 /* return ~0 == "keep all" */ 4312 BPF_STMT(BPF_RET | BPF_K, ~0), 4313 }; 4314 4315 static struct sock_fprog msock_filter = { 4316 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]), 4317 .filter = msock_filter_insns, 4318 }; 4319 4320 4321 static int add_monitor_filter(int s) 4322 { 4323 int idx; 4324 4325 /* rewrite all PASS/FAIL jump offsets */ 4326 for (idx = 0; idx < msock_filter.len; idx++) { 4327 struct sock_filter *insn = &msock_filter_insns[idx]; 4328 4329 if (BPF_CLASS(insn->code) == BPF_JMP) { 4330 if (insn->code == (BPF_JMP|BPF_JA)) { 4331 if (insn->k == PASS) 4332 insn->k = msock_filter.len - idx - 2; 4333 else if (insn->k == FAIL) 4334 insn->k = msock_filter.len - idx - 3; 4335 } 4336 4337 if (insn->jt == PASS) 4338 insn->jt = msock_filter.len - idx - 2; 4339 else if (insn->jt == FAIL) 4340 insn->jt = msock_filter.len - idx - 3; 4341 4342 if (insn->jf == PASS) 4343 insn->jf = msock_filter.len - idx - 2; 4344 else if (insn->jf == FAIL) 4345 insn->jf = msock_filter.len - idx - 3; 4346 } 4347 } 4348 4349 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, 4350 &msock_filter, sizeof(msock_filter))) { 4351 perror("SO_ATTACH_FILTER"); 4352 return -1; 4353 } 4354 4355 return 0; 4356 } 4357 4358 4359 static void nl80211_remove_monitor_interface( 4360 struct wpa_driver_nl80211_data *drv) 4361 { 4362 if (drv->monitor_ifidx >= 0) { 4363 nl80211_remove_iface(drv, drv->monitor_ifidx); 4364 drv->monitor_ifidx = -1; 4365 } 4366 if (drv->monitor_sock >= 0) { 4367 eloop_unregister_read_sock(drv->monitor_sock); 4368 close(drv->monitor_sock); 4369 drv->monitor_sock = -1; 4370 } 4371 } 4372 4373 4374 static int 4375 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv) 4376 { 4377 char buf[IFNAMSIZ]; 4378 struct sockaddr_ll ll; 4379 int optval; 4380 socklen_t optlen; 4381 #ifdef ANDROID_BRCM_P2P_PATCH 4382 snprintf(buf, IFNAMSIZ, "%s%s", WPA_MONITOR_IFNAME_PREFIX, drv->first_bss.ifname); 4383 #else 4384 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname); 4385 #endif 4386 buf[IFNAMSIZ - 1] = '\0'; 4387 4388 drv->monitor_ifidx = 4389 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 4390 0); 4391 4392 if (drv->monitor_ifidx == -EOPNOTSUPP) { 4393 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support " 4394 "monitor interface type - try to run without it"); 4395 drv->no_monitor_iface_capab = 1; 4396 } 4397 4398 if (drv->monitor_ifidx < 0) 4399 return -1; 4400 4401 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1)) 4402 goto error; 4403 4404 memset(&ll, 0, sizeof(ll)); 4405 ll.sll_family = AF_PACKET; 4406 ll.sll_ifindex = drv->monitor_ifidx; 4407 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 4408 if (drv->monitor_sock < 0) { 4409 perror("socket[PF_PACKET,SOCK_RAW]"); 4410 goto error; 4411 } 4412 4413 if (add_monitor_filter(drv->monitor_sock)) { 4414 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor " 4415 "interface; do filtering in user space"); 4416 /* This works, but will cost in performance. */ 4417 } 4418 4419 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) { 4420 perror("monitor socket bind"); 4421 goto error; 4422 } 4423 4424 optlen = sizeof(optval); 4425 optval = 20; 4426 if (setsockopt 4427 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) { 4428 perror("Failed to set socket priority"); 4429 goto error; 4430 } 4431 4432 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read, 4433 drv, NULL)) { 4434 printf("Could not register monitor read socket\n"); 4435 goto error; 4436 } 4437 4438 return 0; 4439 error: 4440 nl80211_remove_monitor_interface(drv); 4441 return -1; 4442 } 4443 4444 4445 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 4446 4447 static int wpa_driver_nl80211_hapd_send_eapol( 4448 void *priv, const u8 *addr, const u8 *data, 4449 size_t data_len, int encrypt, const u8 *own_addr, u32 flags) 4450 { 4451 struct i802_bss *bss = priv; 4452 struct wpa_driver_nl80211_data *drv = bss->drv; 4453 struct ieee80211_hdr *hdr; 4454 size_t len; 4455 u8 *pos; 4456 int res; 4457 int qos = flags & WPA_STA_WMM; 4458 4459 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 + 4460 data_len; 4461 hdr = os_zalloc(len); 4462 if (hdr == NULL) { 4463 printf("malloc() failed for i802_send_data(len=%lu)\n", 4464 (unsigned long) len); 4465 return -1; 4466 } 4467 4468 hdr->frame_control = 4469 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 4470 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 4471 if (encrypt) 4472 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 4473 if (qos) { 4474 hdr->frame_control |= 4475 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4); 4476 } 4477 4478 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 4479 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 4480 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 4481 pos = (u8 *) (hdr + 1); 4482 4483 if (qos) { 4484 /* add an empty QoS header if needed */ 4485 pos[0] = 0; 4486 pos[1] = 0; 4487 pos += 2; 4488 } 4489 4490 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 4491 pos += sizeof(rfc1042_header); 4492 WPA_PUT_BE16(pos, ETH_P_PAE); 4493 pos += 2; 4494 memcpy(pos, data, data_len); 4495 4496 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt); 4497 if (res < 0) { 4498 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - " 4499 "failed: %d (%s)", 4500 (unsigned long) len, errno, strerror(errno)); 4501 } 4502 os_free(hdr); 4503 4504 return res; 4505 } 4506 4507 4508 static u32 sta_flags_nl80211(int flags) 4509 { 4510 u32 f = 0; 4511 4512 if (flags & WPA_STA_AUTHORIZED) 4513 f |= BIT(NL80211_STA_FLAG_AUTHORIZED); 4514 if (flags & WPA_STA_WMM) 4515 f |= BIT(NL80211_STA_FLAG_WME); 4516 if (flags & WPA_STA_SHORT_PREAMBLE) 4517 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 4518 if (flags & WPA_STA_MFP) 4519 f |= BIT(NL80211_STA_FLAG_MFP); 4520 4521 return f; 4522 } 4523 4524 4525 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr, 4526 int total_flags, 4527 int flags_or, int flags_and) 4528 { 4529 struct i802_bss *bss = priv; 4530 struct wpa_driver_nl80211_data *drv = bss->drv; 4531 struct nl_msg *msg, *flags = NULL; 4532 struct nl80211_sta_flag_update upd; 4533 4534 msg = nlmsg_alloc(); 4535 if (!msg) 4536 return -ENOMEM; 4537 4538 flags = nlmsg_alloc(); 4539 if (!flags) { 4540 nlmsg_free(msg); 4541 return -ENOMEM; 4542 } 4543 4544 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 4545 0, NL80211_CMD_SET_STATION, 0); 4546 4547 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 4548 if_nametoindex(bss->ifname)); 4549 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 4550 4551 /* 4552 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This 4553 * can be removed eventually. 4554 */ 4555 if (total_flags & WPA_STA_AUTHORIZED) 4556 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED); 4557 4558 if (total_flags & WPA_STA_WMM) 4559 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME); 4560 4561 if (total_flags & WPA_STA_SHORT_PREAMBLE) 4562 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE); 4563 4564 if (total_flags & WPA_STA_MFP) 4565 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP); 4566 4567 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags)) 4568 goto nla_put_failure; 4569 4570 os_memset(&upd, 0, sizeof(upd)); 4571 upd.mask = sta_flags_nl80211(flags_or | ~flags_and); 4572 upd.set = sta_flags_nl80211(flags_or); 4573 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 4574 4575 nlmsg_free(flags); 4576 4577 return send_and_recv_msgs(drv, msg, NULL, NULL); 4578 nla_put_failure: 4579 nlmsg_free(flags); 4580 return -ENOBUFS; 4581 } 4582 4583 4584 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv, 4585 struct wpa_driver_associate_params *params) 4586 { 4587 if (params->p2p) 4588 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P " 4589 "group (GO)"); 4590 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) || 4591 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) { 4592 nl80211_remove_monitor_interface(drv); 4593 return -1; 4594 } 4595 4596 /* TODO: setup monitor interface (and add code somewhere to remove this 4597 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */ 4598 wpa_printf(MSG_DEBUG, "nl80211: Update ap_oper_freq with params->freq %d", params->freq); 4599 drv->ap_oper_freq = params->freq; 4600 4601 return 0; 4602 } 4603 4604 4605 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv) 4606 { 4607 struct nl_msg *msg; 4608 int ret = -1; 4609 4610 msg = nlmsg_alloc(); 4611 if (!msg) 4612 return -1; 4613 4614 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 4615 NL80211_CMD_LEAVE_IBSS, 0); 4616 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4617 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4618 msg = NULL; 4619 if (ret) { 4620 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d " 4621 "(%s)", ret, strerror(-ret)); 4622 goto nla_put_failure; 4623 } 4624 4625 ret = 0; 4626 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully"); 4627 4628 nla_put_failure: 4629 nlmsg_free(msg); 4630 return ret; 4631 } 4632 4633 4634 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv, 4635 struct wpa_driver_associate_params *params) 4636 { 4637 struct nl_msg *msg; 4638 int ret = -1; 4639 int count = 0; 4640 4641 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex); 4642 4643 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) { 4644 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into " 4645 "IBSS mode"); 4646 return -1; 4647 } 4648 4649 retry: 4650 msg = nlmsg_alloc(); 4651 if (!msg) 4652 return -1; 4653 4654 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 4655 NL80211_CMD_JOIN_IBSS, 0); 4656 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4657 4658 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid)) 4659 goto nla_put_failure; 4660 4661 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4662 params->ssid, params->ssid_len); 4663 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4664 params->ssid); 4665 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 4666 drv->ssid_len = params->ssid_len; 4667 4668 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4669 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4670 4671 ret = nl80211_set_conn_keys(params, msg); 4672 if (ret) 4673 goto nla_put_failure; 4674 4675 if (params->wpa_ie) { 4676 wpa_hexdump(MSG_DEBUG, 4677 " * Extra IEs for Beacon/Probe Response frames", 4678 params->wpa_ie, params->wpa_ie_len); 4679 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 4680 params->wpa_ie); 4681 } 4682 4683 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4684 msg = NULL; 4685 if (ret) { 4686 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)", 4687 ret, strerror(-ret)); 4688 count++; 4689 if (ret == -EALREADY && count == 1) { 4690 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after " 4691 "forced leave"); 4692 nl80211_leave_ibss(drv); 4693 nlmsg_free(msg); 4694 goto retry; 4695 } 4696 4697 goto nla_put_failure; 4698 } 4699 ret = 0; 4700 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully"); 4701 4702 nla_put_failure: 4703 nlmsg_free(msg); 4704 return ret; 4705 } 4706 4707 4708 static int wpa_driver_nl80211_connect( 4709 struct wpa_driver_nl80211_data *drv, 4710 struct wpa_driver_associate_params *params) 4711 { 4712 struct nl_msg *msg; 4713 enum nl80211_auth_type type; 4714 int ret = 0; 4715 int algs; 4716 4717 msg = nlmsg_alloc(); 4718 if (!msg) 4719 return -1; 4720 4721 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex); 4722 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 4723 NL80211_CMD_CONNECT, 0); 4724 4725 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4726 if (params->bssid) { 4727 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4728 MAC2STR(params->bssid)); 4729 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4730 } 4731 if (params->freq) { 4732 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4733 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4734 } 4735 if (params->ssid) { 4736 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4737 params->ssid, params->ssid_len); 4738 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4739 params->ssid); 4740 if (params->ssid_len > sizeof(drv->ssid)) 4741 goto nla_put_failure; 4742 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 4743 drv->ssid_len = params->ssid_len; 4744 } 4745 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 4746 if (params->wpa_ie) 4747 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 4748 params->wpa_ie); 4749 4750 algs = 0; 4751 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4752 algs++; 4753 if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4754 algs++; 4755 if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4756 algs++; 4757 if (algs > 1) { 4758 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic " 4759 "selection"); 4760 goto skip_auth_type; 4761 } 4762 4763 if (params->auth_alg & WPA_AUTH_ALG_OPEN) 4764 type = NL80211_AUTHTYPE_OPEN_SYSTEM; 4765 else if (params->auth_alg & WPA_AUTH_ALG_SHARED) 4766 type = NL80211_AUTHTYPE_SHARED_KEY; 4767 else if (params->auth_alg & WPA_AUTH_ALG_LEAP) 4768 type = NL80211_AUTHTYPE_NETWORK_EAP; 4769 else if (params->auth_alg & WPA_AUTH_ALG_FT) 4770 type = NL80211_AUTHTYPE_FT; 4771 else 4772 goto nla_put_failure; 4773 4774 wpa_printf(MSG_DEBUG, " * Auth Type %d", type); 4775 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); 4776 4777 skip_auth_type: 4778 if (params->wpa_ie && params->wpa_ie_len) { 4779 enum nl80211_wpa_versions ver; 4780 4781 if (params->wpa_ie[0] == WLAN_EID_RSN) 4782 ver = NL80211_WPA_VERSION_2; 4783 else 4784 ver = NL80211_WPA_VERSION_1; 4785 4786 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver); 4787 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver); 4788 } 4789 4790 if (params->pairwise_suite != CIPHER_NONE) { 4791 int cipher; 4792 4793 switch (params->pairwise_suite) { 4794 case CIPHER_WEP40: 4795 cipher = WLAN_CIPHER_SUITE_WEP40; 4796 break; 4797 case CIPHER_WEP104: 4798 cipher = WLAN_CIPHER_SUITE_WEP104; 4799 break; 4800 case CIPHER_CCMP: 4801 cipher = WLAN_CIPHER_SUITE_CCMP; 4802 break; 4803 case CIPHER_TKIP: 4804 default: 4805 cipher = WLAN_CIPHER_SUITE_TKIP; 4806 break; 4807 } 4808 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 4809 } 4810 4811 if (params->group_suite != CIPHER_NONE) { 4812 int cipher; 4813 4814 switch (params->group_suite) { 4815 case CIPHER_WEP40: 4816 cipher = WLAN_CIPHER_SUITE_WEP40; 4817 break; 4818 case CIPHER_WEP104: 4819 cipher = WLAN_CIPHER_SUITE_WEP104; 4820 break; 4821 case CIPHER_CCMP: 4822 cipher = WLAN_CIPHER_SUITE_CCMP; 4823 break; 4824 case CIPHER_TKIP: 4825 default: 4826 cipher = WLAN_CIPHER_SUITE_TKIP; 4827 break; 4828 } 4829 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 4830 } 4831 4832 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 4833 params->key_mgmt_suite == KEY_MGMT_PSK) { 4834 int mgmt = WLAN_AKM_SUITE_PSK; 4835 4836 switch (params->key_mgmt_suite) { 4837 case KEY_MGMT_802_1X: 4838 mgmt = WLAN_AKM_SUITE_8021X; 4839 break; 4840 case KEY_MGMT_PSK: 4841 default: 4842 mgmt = WLAN_AKM_SUITE_PSK; 4843 break; 4844 } 4845 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt); 4846 } 4847 4848 ret = nl80211_set_conn_keys(params, msg); 4849 if (ret) 4850 goto nla_put_failure; 4851 4852 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4853 msg = NULL; 4854 if (ret) { 4855 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d " 4856 "(%s)", ret, strerror(-ret)); 4857 goto nla_put_failure; 4858 } 4859 ret = 0; 4860 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully"); 4861 4862 nla_put_failure: 4863 nlmsg_free(msg); 4864 return ret; 4865 4866 } 4867 4868 4869 static int wpa_driver_nl80211_associate( 4870 void *priv, struct wpa_driver_associate_params *params) 4871 { 4872 struct i802_bss *bss = priv; 4873 struct wpa_driver_nl80211_data *drv = bss->drv; 4874 int ret = -1; 4875 struct nl_msg *msg; 4876 4877 if (params->mode == IEEE80211_MODE_AP) 4878 return wpa_driver_nl80211_ap(drv, params); 4879 4880 if (params->mode == IEEE80211_MODE_IBSS) 4881 return wpa_driver_nl80211_ibss(drv, params); 4882 4883 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { 4884 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0) 4885 return -1; 4886 return wpa_driver_nl80211_connect(drv, params); 4887 } 4888 4889 drv->associated = 0; 4890 4891 msg = nlmsg_alloc(); 4892 if (!msg) 4893 return -1; 4894 4895 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", 4896 drv->ifindex); 4897 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 4898 NL80211_CMD_ASSOCIATE, 0); 4899 4900 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4901 if (params->bssid) { 4902 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, 4903 MAC2STR(params->bssid)); 4904 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); 4905 } 4906 if (params->freq) { 4907 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); 4908 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); 4909 drv->assoc_freq = params->freq; 4910 } else 4911 drv->assoc_freq = 0; 4912 if (params->ssid) { 4913 wpa_hexdump_ascii(MSG_DEBUG, " * SSID", 4914 params->ssid, params->ssid_len); 4915 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, 4916 params->ssid); 4917 if (params->ssid_len > sizeof(drv->ssid)) 4918 goto nla_put_failure; 4919 os_memcpy(drv->ssid, params->ssid, params->ssid_len); 4920 drv->ssid_len = params->ssid_len; 4921 } 4922 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); 4923 if (params->wpa_ie) 4924 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, 4925 params->wpa_ie); 4926 4927 if (params->pairwise_suite != CIPHER_NONE) { 4928 int cipher; 4929 4930 switch (params->pairwise_suite) { 4931 case CIPHER_WEP40: 4932 cipher = WLAN_CIPHER_SUITE_WEP40; 4933 break; 4934 case CIPHER_WEP104: 4935 cipher = WLAN_CIPHER_SUITE_WEP104; 4936 break; 4937 case CIPHER_CCMP: 4938 cipher = WLAN_CIPHER_SUITE_CCMP; 4939 break; 4940 case CIPHER_TKIP: 4941 default: 4942 cipher = WLAN_CIPHER_SUITE_TKIP; 4943 break; 4944 } 4945 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher); 4946 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher); 4947 } 4948 4949 if (params->group_suite != CIPHER_NONE) { 4950 int cipher; 4951 4952 switch (params->group_suite) { 4953 case CIPHER_WEP40: 4954 cipher = WLAN_CIPHER_SUITE_WEP40; 4955 break; 4956 case CIPHER_WEP104: 4957 cipher = WLAN_CIPHER_SUITE_WEP104; 4958 break; 4959 case CIPHER_CCMP: 4960 cipher = WLAN_CIPHER_SUITE_CCMP; 4961 break; 4962 case CIPHER_TKIP: 4963 default: 4964 cipher = WLAN_CIPHER_SUITE_TKIP; 4965 break; 4966 } 4967 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher); 4968 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher); 4969 } 4970 4971 #ifdef CONFIG_IEEE80211W 4972 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED) 4973 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED); 4974 #endif /* CONFIG_IEEE80211W */ 4975 4976 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT); 4977 4978 if (params->prev_bssid) { 4979 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR, 4980 MAC2STR(params->prev_bssid)); 4981 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN, 4982 params->prev_bssid); 4983 } 4984 4985 if (params->p2p) 4986 wpa_printf(MSG_DEBUG, " * P2P group"); 4987 4988 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4989 msg = NULL; 4990 if (ret) { 4991 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " 4992 "(%s)", ret, strerror(-ret)); 4993 nl80211_dump_scan(drv); 4994 goto nla_put_failure; 4995 } 4996 ret = 0; 4997 wpa_printf(MSG_DEBUG, "nl80211: Association request send " 4998 "successfully"); 4999 5000 nla_put_failure: 5001 nlmsg_free(msg); 5002 return ret; 5003 } 5004 5005 5006 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, 5007 int ifindex, int mode) 5008 { 5009 struct nl_msg *msg; 5010 int ret = -ENOBUFS; 5011 5012 msg = nlmsg_alloc(); 5013 if (!msg) 5014 return -ENOMEM; 5015 5016 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5017 0, NL80211_CMD_SET_INTERFACE, 0); 5018 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 5019 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode); 5020 5021 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5022 if (!ret) 5023 return 0; 5024 nla_put_failure: 5025 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:" 5026 " %d (%s)", ifindex, mode, ret, strerror(-ret)); 5027 return ret; 5028 } 5029 5030 5031 static int wpa_driver_nl80211_set_mode(void *priv, int mode) 5032 { 5033 struct i802_bss *bss = priv; 5034 struct wpa_driver_nl80211_data *drv = bss->drv; 5035 int ret = -1; 5036 int nlmode; 5037 int i; 5038 5039 switch (mode) { 5040 case 0: 5041 nlmode = NL80211_IFTYPE_STATION; 5042 break; 5043 case 1: 5044 nlmode = NL80211_IFTYPE_ADHOC; 5045 break; 5046 case 2: 5047 nlmode = NL80211_IFTYPE_AP; 5048 break; 5049 default: 5050 return -1; 5051 } 5052 5053 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) { 5054 drv->nlmode = nlmode; 5055 ret = 0; 5056 goto done; 5057 } 5058 5059 if (nlmode == drv->nlmode) { 5060 wpa_printf(MSG_DEBUG, "nl80211: Interface already in " 5061 "requested mode - ignore error"); 5062 ret = 0; 5063 goto done; /* Already in the requested mode */ 5064 } 5065 5066 /* mac80211 doesn't allow mode changes while the device is up, so 5067 * take the device down, try to set the mode again, and bring the 5068 * device back up. 5069 */ 5070 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting " 5071 "interface down"); 5072 for (i = 0; i < 10; i++) { 5073 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 5074 0) { 5075 /* Try to set the mode again while the interface is 5076 * down */ 5077 ret = nl80211_set_mode(drv, drv->ifindex, nlmode); 5078 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 5079 1)) 5080 ret = -1; 5081 if (!ret) 5082 break; 5083 } else 5084 wpa_printf(MSG_DEBUG, "nl80211: Failed to set " 5085 "interface down"); 5086 os_sleep(0, 100000); 5087 } 5088 5089 if (!ret) { 5090 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while " 5091 "interface is down"); 5092 drv->nlmode = nlmode; 5093 } 5094 5095 done: 5096 if (!ret && nlmode == NL80211_IFTYPE_AP) { 5097 /* Setup additional AP mode functionality if needed */ 5098 if (!drv->no_monitor_iface_capab && drv->monitor_ifidx < 0 && 5099 nl80211_create_monitor_interface(drv) && 5100 !drv->no_monitor_iface_capab) 5101 return -1; 5102 } else if (!ret && nlmode != NL80211_IFTYPE_AP) { 5103 /* Remove additional AP mode functionality */ 5104 nl80211_remove_monitor_interface(drv); 5105 bss->beacon_set = 0; 5106 } 5107 5108 if (ret) 5109 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d " 5110 "from %d failed", nlmode, drv->nlmode); 5111 5112 return ret; 5113 } 5114 5115 5116 static int wpa_driver_nl80211_get_capa(void *priv, 5117 struct wpa_driver_capa *capa) 5118 { 5119 struct i802_bss *bss = priv; 5120 struct wpa_driver_nl80211_data *drv = bss->drv; 5121 if (!drv->has_capability) 5122 return -1; 5123 os_memcpy(capa, &drv->capa, sizeof(*capa)); 5124 return 0; 5125 } 5126 5127 5128 static int wpa_driver_nl80211_set_operstate(void *priv, int state) 5129 { 5130 struct i802_bss *bss = priv; 5131 struct wpa_driver_nl80211_data *drv = bss->drv; 5132 5133 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", 5134 __func__, drv->operstate, state, state ? "UP" : "DORMANT"); 5135 drv->operstate = state; 5136 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1, 5137 state ? IF_OPER_UP : IF_OPER_DORMANT); 5138 } 5139 5140 5141 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized) 5142 { 5143 struct i802_bss *bss = priv; 5144 struct wpa_driver_nl80211_data *drv = bss->drv; 5145 struct nl_msg *msg; 5146 struct nl80211_sta_flag_update upd; 5147 5148 msg = nlmsg_alloc(); 5149 if (!msg) 5150 return -ENOMEM; 5151 5152 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5153 0, NL80211_CMD_SET_STATION, 0); 5154 5155 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5156 if_nametoindex(bss->ifname)); 5157 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 5158 5159 os_memset(&upd, 0, sizeof(upd)); 5160 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED); 5161 if (authorized) 5162 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED); 5163 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd); 5164 5165 return send_and_recv_msgs(drv, msg, NULL, NULL); 5166 nla_put_failure: 5167 return -ENOBUFS; 5168 } 5169 5170 5171 /* Set kernel driver on given frequency (MHz) */ 5172 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq) 5173 { 5174 struct i802_bss *bss = priv; 5175 struct wpa_driver_nl80211_data *drv = bss->drv; 5176 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled, 5177 freq->sec_channel_offset); 5178 } 5179 5180 5181 #if defined(HOSTAPD) || defined(CONFIG_AP) 5182 5183 static inline int min_int(int a, int b) 5184 { 5185 if (a < b) 5186 return a; 5187 return b; 5188 } 5189 5190 5191 static int get_key_handler(struct nl_msg *msg, void *arg) 5192 { 5193 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 5194 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5195 5196 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5197 genlmsg_attrlen(gnlh, 0), NULL); 5198 5199 /* 5200 * TODO: validate the key index and mac address! 5201 * Otherwise, there's a race condition as soon as 5202 * the kernel starts sending key notifications. 5203 */ 5204 5205 if (tb[NL80211_ATTR_KEY_SEQ]) 5206 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]), 5207 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6)); 5208 return NL_SKIP; 5209 } 5210 5211 5212 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr, 5213 int idx, u8 *seq) 5214 { 5215 struct i802_bss *bss = priv; 5216 struct wpa_driver_nl80211_data *drv = bss->drv; 5217 struct nl_msg *msg; 5218 5219 msg = nlmsg_alloc(); 5220 if (!msg) 5221 return -ENOMEM; 5222 5223 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5224 0, NL80211_CMD_GET_KEY, 0); 5225 5226 if (addr) 5227 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5228 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx); 5229 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface)); 5230 5231 memset(seq, 0, 6); 5232 5233 return send_and_recv_msgs(drv, msg, get_key_handler, seq); 5234 nla_put_failure: 5235 return -ENOBUFS; 5236 } 5237 5238 5239 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates, 5240 int mode) 5241 { 5242 struct i802_bss *bss = priv; 5243 struct wpa_driver_nl80211_data *drv = bss->drv; 5244 struct nl_msg *msg; 5245 u8 rates[NL80211_MAX_SUPP_RATES]; 5246 u8 rates_len = 0; 5247 int i; 5248 5249 msg = nlmsg_alloc(); 5250 if (!msg) 5251 return -ENOMEM; 5252 5253 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 5254 NL80211_CMD_SET_BSS, 0); 5255 5256 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++) 5257 rates[rates_len++] = basic_rates[i] / 5; 5258 5259 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates); 5260 5261 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5262 5263 return send_and_recv_msgs(drv, msg, NULL, NULL); 5264 nla_put_failure: 5265 return -ENOBUFS; 5266 } 5267 5268 5269 static int i802_set_rts(void *priv, int rts) 5270 { 5271 struct i802_bss *bss = priv; 5272 struct wpa_driver_nl80211_data *drv = bss->drv; 5273 struct nl_msg *msg; 5274 int ret = -ENOBUFS; 5275 u32 val; 5276 5277 msg = nlmsg_alloc(); 5278 if (!msg) 5279 return -ENOMEM; 5280 5281 if (rts >= 2347) 5282 val = (u32) -1; 5283 else 5284 val = rts; 5285 5286 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5287 0, NL80211_CMD_SET_WIPHY, 0); 5288 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5289 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val); 5290 5291 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5292 if (!ret) 5293 return 0; 5294 nla_put_failure: 5295 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: " 5296 "%d (%s)", rts, ret, strerror(-ret)); 5297 return ret; 5298 } 5299 5300 5301 static int i802_set_frag(void *priv, int frag) 5302 { 5303 struct i802_bss *bss = priv; 5304 struct wpa_driver_nl80211_data *drv = bss->drv; 5305 struct nl_msg *msg; 5306 int ret = -ENOBUFS; 5307 u32 val; 5308 5309 msg = nlmsg_alloc(); 5310 if (!msg) 5311 return -ENOMEM; 5312 5313 if (frag >= 2346) 5314 val = (u32) -1; 5315 else 5316 val = frag; 5317 5318 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5319 0, NL80211_CMD_SET_WIPHY, 0); 5320 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5321 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val); 5322 5323 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5324 if (!ret) 5325 return 0; 5326 nla_put_failure: 5327 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold " 5328 "%d: %d (%s)", frag, ret, strerror(-ret)); 5329 return ret; 5330 } 5331 5332 5333 static int i802_flush(void *priv) 5334 { 5335 struct i802_bss *bss = priv; 5336 struct wpa_driver_nl80211_data *drv = bss->drv; 5337 struct nl_msg *msg; 5338 5339 msg = nlmsg_alloc(); 5340 if (!msg) 5341 return -1; 5342 5343 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5344 0, NL80211_CMD_DEL_STATION, 0); 5345 5346 /* 5347 * XXX: FIX! this needs to flush all VLANs too 5348 */ 5349 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5350 if_nametoindex(bss->ifname)); 5351 5352 return send_and_recv_msgs(drv, msg, NULL, NULL); 5353 nla_put_failure: 5354 return -ENOBUFS; 5355 } 5356 5357 5358 static int get_sta_handler(struct nl_msg *msg, void *arg) 5359 { 5360 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 5361 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5362 struct hostap_sta_driver_data *data = arg; 5363 struct nlattr *stats[NL80211_STA_INFO_MAX + 1]; 5364 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 5365 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 5366 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 5367 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 5368 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 5369 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 5370 }; 5371 5372 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5373 genlmsg_attrlen(gnlh, 0), NULL); 5374 5375 /* 5376 * TODO: validate the interface and mac address! 5377 * Otherwise, there's a race condition as soon as 5378 * the kernel starts sending station notifications. 5379 */ 5380 5381 if (!tb[NL80211_ATTR_STA_INFO]) { 5382 wpa_printf(MSG_DEBUG, "sta stats missing!"); 5383 return NL_SKIP; 5384 } 5385 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX, 5386 tb[NL80211_ATTR_STA_INFO], 5387 stats_policy)) { 5388 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!"); 5389 return NL_SKIP; 5390 } 5391 5392 if (stats[NL80211_STA_INFO_INACTIVE_TIME]) 5393 data->inactive_msec = 5394 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]); 5395 if (stats[NL80211_STA_INFO_RX_BYTES]) 5396 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]); 5397 if (stats[NL80211_STA_INFO_TX_BYTES]) 5398 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]); 5399 if (stats[NL80211_STA_INFO_RX_PACKETS]) 5400 data->rx_packets = 5401 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]); 5402 if (stats[NL80211_STA_INFO_TX_PACKETS]) 5403 data->tx_packets = 5404 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]); 5405 5406 return NL_SKIP; 5407 } 5408 5409 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data, 5410 const u8 *addr) 5411 { 5412 struct i802_bss *bss = priv; 5413 struct wpa_driver_nl80211_data *drv = bss->drv; 5414 struct nl_msg *msg; 5415 5416 os_memset(data, 0, sizeof(*data)); 5417 msg = nlmsg_alloc(); 5418 if (!msg) 5419 return -ENOMEM; 5420 5421 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5422 0, NL80211_CMD_GET_STATION, 0); 5423 5424 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5425 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5426 5427 return send_and_recv_msgs(drv, msg, get_sta_handler, data); 5428 nla_put_failure: 5429 return -ENOBUFS; 5430 } 5431 5432 5433 static int i802_set_tx_queue_params(void *priv, int queue, int aifs, 5434 int cw_min, int cw_max, int burst_time) 5435 { 5436 struct i802_bss *bss = priv; 5437 struct wpa_driver_nl80211_data *drv = bss->drv; 5438 struct nl_msg *msg; 5439 struct nlattr *txq, *params; 5440 5441 msg = nlmsg_alloc(); 5442 if (!msg) 5443 return -1; 5444 5445 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5446 0, NL80211_CMD_SET_WIPHY, 0); 5447 5448 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5449 5450 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS); 5451 if (!txq) 5452 goto nla_put_failure; 5453 5454 /* We are only sending parameters for a single TXQ at a time */ 5455 params = nla_nest_start(msg, 1); 5456 if (!params) 5457 goto nla_put_failure; 5458 5459 switch (queue) { 5460 case 0: 5461 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO); 5462 break; 5463 case 1: 5464 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI); 5465 break; 5466 case 2: 5467 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE); 5468 break; 5469 case 3: 5470 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK); 5471 break; 5472 } 5473 /* Burst time is configured in units of 0.1 msec and TXOP parameter in 5474 * 32 usec, so need to convert the value here. */ 5475 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32); 5476 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min); 5477 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max); 5478 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs); 5479 5480 nla_nest_end(msg, params); 5481 5482 nla_nest_end(msg, txq); 5483 5484 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 5485 return 0; 5486 nla_put_failure: 5487 return -1; 5488 } 5489 5490 5491 static int i802_set_bss(void *priv, int cts, int preamble, int slot, 5492 int ht_opmode) 5493 { 5494 struct i802_bss *bss = priv; 5495 struct wpa_driver_nl80211_data *drv = bss->drv; 5496 struct nl_msg *msg; 5497 5498 msg = nlmsg_alloc(); 5499 if (!msg) 5500 return -ENOMEM; 5501 5502 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 5503 NL80211_CMD_SET_BSS, 0); 5504 5505 if (cts >= 0) 5506 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts); 5507 if (preamble >= 0) 5508 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble); 5509 if (slot >= 0) 5510 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot); 5511 if (ht_opmode >= 0) 5512 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode); 5513 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 5514 5515 return send_and_recv_msgs(drv, msg, NULL, NULL); 5516 nla_put_failure: 5517 return -ENOBUFS; 5518 } 5519 5520 5521 static int i802_set_cts_protect(void *priv, int value) 5522 { 5523 return i802_set_bss(priv, value, -1, -1, -1); 5524 } 5525 5526 5527 static int i802_set_preamble(void *priv, int value) 5528 { 5529 return i802_set_bss(priv, -1, value, -1, -1); 5530 } 5531 5532 5533 static int i802_set_short_slot_time(void *priv, int value) 5534 { 5535 return i802_set_bss(priv, -1, -1, value, -1); 5536 } 5537 5538 5539 static int i802_set_sta_vlan(void *priv, const u8 *addr, 5540 const char *ifname, int vlan_id) 5541 { 5542 struct i802_bss *bss = priv; 5543 struct wpa_driver_nl80211_data *drv = bss->drv; 5544 struct nl_msg *msg; 5545 int ret = -ENOBUFS; 5546 5547 msg = nlmsg_alloc(); 5548 if (!msg) 5549 return -ENOMEM; 5550 5551 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 5552 0, NL80211_CMD_SET_STATION, 0); 5553 5554 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, 5555 if_nametoindex(bss->ifname)); 5556 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); 5557 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, 5558 if_nametoindex(ifname)); 5559 5560 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5561 if (ret < 0) { 5562 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr=" 5563 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)", 5564 MAC2STR(addr), ifname, vlan_id, ret, 5565 strerror(-ret)); 5566 } 5567 nla_put_failure: 5568 return ret; 5569 } 5570 5571 5572 static int i802_set_ht_params(void *priv, const u8 *ht_capab, 5573 size_t ht_capab_len, const u8 *ht_oper, 5574 size_t ht_oper_len) 5575 { 5576 if (ht_oper_len >= 6) { 5577 /* ht opmode uses 16bit in octet 5 & 6 */ 5578 u16 ht_opmode = le_to_host16(((u16 *) ht_oper)[2]); 5579 return i802_set_bss(priv, -1, -1, -1, ht_opmode); 5580 } else 5581 return -1; 5582 } 5583 5584 5585 static int i802_get_inact_sec(void *priv, const u8 *addr) 5586 { 5587 struct hostap_sta_driver_data data; 5588 int ret; 5589 5590 data.inactive_msec = (unsigned long) -1; 5591 ret = i802_read_sta_data(priv, &data, addr); 5592 if (ret || data.inactive_msec == (unsigned long) -1) 5593 return -1; 5594 return data.inactive_msec / 1000; 5595 } 5596 5597 5598 static int i802_sta_clear_stats(void *priv, const u8 *addr) 5599 { 5600 #if 0 5601 /* TODO */ 5602 #endif 5603 return 0; 5604 } 5605 5606 5607 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 5608 int reason) 5609 { 5610 struct i802_bss *bss = priv; 5611 struct ieee80211_mgmt mgmt; 5612 5613 memset(&mgmt, 0, sizeof(mgmt)); 5614 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 5615 WLAN_FC_STYPE_DEAUTH); 5616 memcpy(mgmt.da, addr, ETH_ALEN); 5617 memcpy(mgmt.sa, own_addr, ETH_ALEN); 5618 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 5619 mgmt.u.deauth.reason_code = host_to_le16(reason); 5620 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 5621 IEEE80211_HDRLEN + 5622 sizeof(mgmt.u.deauth)); 5623 } 5624 5625 5626 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 5627 int reason) 5628 { 5629 struct i802_bss *bss = priv; 5630 struct ieee80211_mgmt mgmt; 5631 5632 memset(&mgmt, 0, sizeof(mgmt)); 5633 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 5634 WLAN_FC_STYPE_DISASSOC); 5635 memcpy(mgmt.da, addr, ETH_ALEN); 5636 memcpy(mgmt.sa, own_addr, ETH_ALEN); 5637 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 5638 mgmt.u.disassoc.reason_code = host_to_le16(reason); 5639 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt, 5640 IEEE80211_HDRLEN + 5641 sizeof(mgmt.u.disassoc)); 5642 } 5643 5644 #endif /* HOSTAPD || CONFIG_AP */ 5645 5646 #ifdef HOSTAPD 5647 5648 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 5649 { 5650 int i; 5651 int *old; 5652 5653 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d", 5654 ifidx); 5655 for (i = 0; i < drv->num_if_indices; i++) { 5656 if (drv->if_indices[i] == 0) { 5657 drv->if_indices[i] = ifidx; 5658 return; 5659 } 5660 } 5661 5662 if (drv->if_indices != drv->default_if_indices) 5663 old = drv->if_indices; 5664 else 5665 old = NULL; 5666 5667 drv->if_indices = os_realloc(old, 5668 sizeof(int) * (drv->num_if_indices + 1)); 5669 if (!drv->if_indices) { 5670 if (!old) 5671 drv->if_indices = drv->default_if_indices; 5672 else 5673 drv->if_indices = old; 5674 wpa_printf(MSG_ERROR, "Failed to reallocate memory for " 5675 "interfaces"); 5676 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx); 5677 return; 5678 } else if (!old) 5679 os_memcpy(drv->if_indices, drv->default_if_indices, 5680 sizeof(drv->default_if_indices)); 5681 drv->if_indices[drv->num_if_indices] = ifidx; 5682 drv->num_if_indices++; 5683 } 5684 5685 5686 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 5687 { 5688 int i; 5689 5690 for (i = 0; i < drv->num_if_indices; i++) { 5691 if (drv->if_indices[i] == ifidx) { 5692 drv->if_indices[i] = 0; 5693 break; 5694 } 5695 } 5696 } 5697 5698 5699 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx) 5700 { 5701 int i; 5702 5703 for (i = 0; i < drv->num_if_indices; i++) 5704 if (drv->if_indices[i] == ifidx) 5705 return 1; 5706 5707 return 0; 5708 } 5709 5710 5711 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val, 5712 const char *bridge_ifname) 5713 { 5714 struct i802_bss *bss = priv; 5715 struct wpa_driver_nl80211_data *drv = bss->drv; 5716 char name[IFNAMSIZ + 1]; 5717 5718 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid); 5719 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR 5720 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name); 5721 if (val) { 5722 if (!if_nametoindex(name)) { 5723 if (nl80211_create_iface(drv, name, 5724 NL80211_IFTYPE_AP_VLAN, 5725 NULL, 1) < 0) 5726 return -1; 5727 if (bridge_ifname && 5728 linux_br_add_if(drv->ioctl_sock, bridge_ifname, 5729 name) < 0) 5730 return -1; 5731 } 5732 linux_set_iface_flags(drv->ioctl_sock, name, 1); 5733 return i802_set_sta_vlan(priv, addr, name, 0); 5734 } else { 5735 i802_set_sta_vlan(priv, addr, bss->ifname, 0); 5736 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN, 5737 name); 5738 } 5739 } 5740 5741 5742 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx) 5743 { 5744 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5745 struct sockaddr_ll lladdr; 5746 unsigned char buf[3000]; 5747 int len; 5748 socklen_t fromlen = sizeof(lladdr); 5749 5750 len = recvfrom(sock, buf, sizeof(buf), 0, 5751 (struct sockaddr *)&lladdr, &fromlen); 5752 if (len < 0) { 5753 perror("recv"); 5754 return; 5755 } 5756 5757 if (have_ifidx(drv, lladdr.sll_ifindex)) 5758 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len); 5759 } 5760 5761 5762 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv, 5763 struct i802_bss *bss, 5764 const char *brname, const char *ifname) 5765 { 5766 int ifindex; 5767 char in_br[IFNAMSIZ]; 5768 5769 os_strlcpy(bss->brname, brname, IFNAMSIZ); 5770 ifindex = if_nametoindex(brname); 5771 if (ifindex == 0) { 5772 /* 5773 * Bridge was configured, but the bridge device does 5774 * not exist. Try to add it now. 5775 */ 5776 if (linux_br_add(drv->ioctl_sock, brname) < 0) { 5777 wpa_printf(MSG_ERROR, "nl80211: Failed to add the " 5778 "bridge interface %s: %s", 5779 brname, strerror(errno)); 5780 return -1; 5781 } 5782 bss->added_bridge = 1; 5783 add_ifidx(drv, if_nametoindex(brname)); 5784 } 5785 5786 if (linux_br_get(in_br, ifname) == 0) { 5787 if (os_strcmp(in_br, brname) == 0) 5788 return 0; /* already in the bridge */ 5789 5790 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from " 5791 "bridge %s", ifname, in_br); 5792 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) { 5793 wpa_printf(MSG_ERROR, "nl80211: Failed to " 5794 "remove interface %s from bridge " 5795 "%s: %s", 5796 ifname, brname, strerror(errno)); 5797 return -1; 5798 } 5799 } 5800 5801 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s", 5802 ifname, brname); 5803 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) { 5804 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s " 5805 "into bridge %s: %s", 5806 ifname, brname, strerror(errno)); 5807 return -1; 5808 } 5809 bss->added_if_into_bridge = 1; 5810 5811 return 0; 5812 } 5813 5814 5815 static void *i802_init(struct hostapd_data *hapd, 5816 struct wpa_init_params *params) 5817 { 5818 struct wpa_driver_nl80211_data *drv; 5819 struct i802_bss *bss; 5820 size_t i; 5821 char brname[IFNAMSIZ]; 5822 int ifindex, br_ifindex; 5823 int br_added = 0; 5824 5825 bss = wpa_driver_nl80211_init(hapd, params->ifname, NULL); 5826 if (bss == NULL) 5827 return NULL; 5828 5829 drv = bss->drv; 5830 drv->nlmode = NL80211_IFTYPE_AP; 5831 if (linux_br_get(brname, params->ifname) == 0) { 5832 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s", 5833 params->ifname, brname); 5834 br_ifindex = if_nametoindex(brname); 5835 } else { 5836 brname[0] = '\0'; 5837 br_ifindex = 0; 5838 } 5839 5840 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 5841 drv->if_indices = drv->default_if_indices; 5842 for (i = 0; i < params->num_bridge; i++) { 5843 if (params->bridge[i]) { 5844 ifindex = if_nametoindex(params->bridge[i]); 5845 if (ifindex) 5846 add_ifidx(drv, ifindex); 5847 if (ifindex == br_ifindex) 5848 br_added = 1; 5849 } 5850 } 5851 if (!br_added && br_ifindex && 5852 (params->num_bridge == 0 || !params->bridge[0])) 5853 add_ifidx(drv, br_ifindex); 5854 5855 /* start listening for EAPOL on the default AP interface */ 5856 add_ifidx(drv, drv->ifindex); 5857 5858 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0)) 5859 goto failed; 5860 5861 if (params->bssid) { 5862 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname, 5863 params->bssid)) 5864 goto failed; 5865 } 5866 5867 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) { 5868 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s " 5869 "into AP mode", bss->ifname); 5870 goto failed; 5871 } 5872 5873 if (params->num_bridge && params->bridge[0] && 5874 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0) 5875 goto failed; 5876 5877 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) 5878 goto failed; 5879 5880 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE)); 5881 if (drv->eapol_sock < 0) { 5882 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)"); 5883 goto failed; 5884 } 5885 5886 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL)) 5887 { 5888 printf("Could not register read socket for eapol\n"); 5889 goto failed; 5890 } 5891 5892 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr)) 5893 goto failed; 5894 5895 return bss; 5896 5897 failed: 5898 nl80211_remove_monitor_interface(drv); 5899 rfkill_deinit(drv->rfkill); 5900 netlink_deinit(drv->netlink); 5901 if (drv->ioctl_sock >= 0) 5902 close(drv->ioctl_sock); 5903 5904 genl_family_put(drv->nl80211); 5905 nl_cache_free(drv->nl_cache); 5906 nl80211_handle_destroy(drv->nl_handle); 5907 nl_cb_put(drv->nl_cb); 5908 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event)); 5909 5910 os_free(drv); 5911 return NULL; 5912 } 5913 5914 5915 static void i802_deinit(void *priv) 5916 { 5917 wpa_driver_nl80211_deinit(priv); 5918 } 5919 5920 #endif /* HOSTAPD */ 5921 5922 5923 static enum nl80211_iftype wpa_driver_nl80211_if_type( 5924 enum wpa_driver_if_type type) 5925 { 5926 switch (type) { 5927 case WPA_IF_STATION: 5928 return NL80211_IFTYPE_STATION; 5929 case WPA_IF_P2P_CLIENT: 5930 case WPA_IF_P2P_GROUP: 5931 return NL80211_IFTYPE_P2P_CLIENT; 5932 case WPA_IF_AP_VLAN: 5933 return NL80211_IFTYPE_AP_VLAN; 5934 case WPA_IF_AP_BSS: 5935 return NL80211_IFTYPE_AP; 5936 case WPA_IF_P2P_GO: 5937 return NL80211_IFTYPE_P2P_GO; 5938 } 5939 return -1; 5940 } 5941 5942 5943 #ifdef CONFIG_P2P 5944 5945 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr) 5946 { 5947 struct wpa_driver_nl80211_data *drv; 5948 dl_list_for_each(drv, &global->interfaces, 5949 struct wpa_driver_nl80211_data, list) { 5950 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0) 5951 return 1; 5952 } 5953 return 0; 5954 } 5955 5956 5957 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv, 5958 u8 *new_addr) 5959 { 5960 unsigned int idx; 5961 5962 if (!drv->global) 5963 return -1; 5964 5965 os_memcpy(new_addr, drv->addr, ETH_ALEN); 5966 for (idx = 0; idx < 64; idx++) { 5967 new_addr[0] = drv->addr[0] | 0x02; 5968 new_addr[0] ^= idx << 2; 5969 if (!nl80211_addr_in_use(drv->global, new_addr)) 5970 break; 5971 } 5972 if (idx == 64) 5973 return -1; 5974 5975 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address " 5976 MACSTR, MAC2STR(new_addr)); 5977 5978 return 0; 5979 } 5980 5981 #endif /* CONFIG_P2P */ 5982 5983 5984 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type, 5985 const char *ifname, const u8 *addr, 5986 void *bss_ctx, void **drv_priv, 5987 char *force_ifname, u8 *if_addr, 5988 const char *bridge) 5989 { 5990 struct i802_bss *bss = priv; 5991 struct wpa_driver_nl80211_data *drv = bss->drv; 5992 int ifidx; 5993 #ifdef HOSTAPD 5994 struct i802_bss *new_bss = NULL; 5995 5996 if (type == WPA_IF_AP_BSS) { 5997 new_bss = os_zalloc(sizeof(*new_bss)); 5998 if (new_bss == NULL) 5999 return -1; 6000 } 6001 #endif /* HOSTAPD */ 6002 6003 if (addr) 6004 os_memcpy(if_addr, addr, ETH_ALEN); 6005 ifidx = nl80211_create_iface(drv, ifname, 6006 wpa_driver_nl80211_if_type(type), addr, 6007 0); 6008 if (ifidx < 0) { 6009 #ifdef HOSTAPD 6010 os_free(new_bss); 6011 #endif /* HOSTAPD */ 6012 return -1; 6013 } 6014 6015 if (!addr && 6016 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0) { 6017 nl80211_remove_iface(drv, ifidx); 6018 return -1; 6019 } 6020 6021 #ifdef CONFIG_P2P 6022 if (!addr && 6023 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP || 6024 type == WPA_IF_P2P_GO)) { 6025 /* Enforce unique P2P Interface Address */ 6026 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN]; 6027 6028 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) 6029 < 0 || 6030 linux_get_ifhwaddr(drv->ioctl_sock, ifname, new_addr) < 0) 6031 { 6032 nl80211_remove_iface(drv, ifidx); 6033 return -1; 6034 } 6035 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) { 6036 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address " 6037 "for P2P group interface"); 6038 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) { 6039 nl80211_remove_iface(drv, ifidx); 6040 return -1; 6041 } 6042 if (linux_set_ifhwaddr(drv->ioctl_sock, ifname, 6043 new_addr) < 0) { 6044 nl80211_remove_iface(drv, ifidx); 6045 return -1; 6046 } 6047 } 6048 os_memcpy(if_addr, new_addr, ETH_ALEN); 6049 } 6050 #endif /* CONFIG_P2P */ 6051 6052 #ifdef HOSTAPD 6053 if (bridge && 6054 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) { 6055 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new " 6056 "interface %s to a bridge %s", ifname, bridge); 6057 nl80211_remove_iface(drv, ifidx); 6058 os_free(new_bss); 6059 return -1; 6060 } 6061 6062 if (type == WPA_IF_AP_BSS) { 6063 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) { 6064 nl80211_remove_iface(drv, ifidx); 6065 os_free(new_bss); 6066 return -1; 6067 } 6068 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ); 6069 new_bss->ifindex = ifidx; 6070 new_bss->drv = drv; 6071 new_bss->next = drv->first_bss.next; 6072 drv->first_bss.next = new_bss; 6073 if (drv_priv) 6074 *drv_priv = new_bss; 6075 } 6076 #endif /* HOSTAPD */ 6077 6078 return 0; 6079 } 6080 6081 6082 static int wpa_driver_nl80211_if_remove(void *priv, 6083 enum wpa_driver_if_type type, 6084 const char *ifname) 6085 { 6086 struct i802_bss *bss = priv; 6087 struct wpa_driver_nl80211_data *drv = bss->drv; 6088 int ifindex = if_nametoindex(ifname); 6089 6090 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d", 6091 __func__, type, ifname, ifindex); 6092 if (ifindex <= 0) 6093 return -1; 6094 6095 #ifdef HOSTAPD 6096 if (bss->added_if_into_bridge) { 6097 if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname) 6098 < 0) 6099 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 6100 "interface %s from bridge %s: %s", 6101 bss->ifname, bss->brname, strerror(errno)); 6102 } 6103 if (bss->added_bridge) { 6104 if (linux_br_del(drv->ioctl_sock, bss->brname) < 0) 6105 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 6106 "bridge %s: %s", 6107 bss->brname, strerror(errno)); 6108 } 6109 #endif /* HOSTAPD */ 6110 6111 nl80211_remove_iface(drv, ifindex); 6112 6113 #ifdef HOSTAPD 6114 if (type != WPA_IF_AP_BSS) 6115 return 0; 6116 6117 if (bss != &drv->first_bss) { 6118 struct i802_bss *tbss; 6119 6120 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) { 6121 if (tbss->next == bss) { 6122 tbss->next = bss->next; 6123 os_free(bss); 6124 bss = NULL; 6125 break; 6126 } 6127 } 6128 if (bss) 6129 wpa_printf(MSG_INFO, "nl80211: %s - could not find " 6130 "BSS %p in the list", __func__, bss); 6131 } 6132 #endif /* HOSTAPD */ 6133 6134 return 0; 6135 } 6136 6137 6138 static int cookie_handler(struct nl_msg *msg, void *arg) 6139 { 6140 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 6141 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 6142 u64 *cookie = arg; 6143 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 6144 genlmsg_attrlen(gnlh, 0), NULL); 6145 if (tb[NL80211_ATTR_COOKIE]) 6146 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 6147 return NL_SKIP; 6148 } 6149 6150 6151 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv, 6152 unsigned int freq, unsigned int wait, 6153 const u8 *buf, size_t buf_len, 6154 u64 *cookie_out) 6155 { 6156 struct nl_msg *msg; 6157 u64 cookie; 6158 int ret = -1; 6159 6160 msg = nlmsg_alloc(); 6161 if (!msg) 6162 return -1; 6163 6164 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6165 NL80211_CMD_FRAME, 0); 6166 6167 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6168 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 6169 #ifndef ANDROID_BRCM_P2P_PATCH 6170 if (wait) 6171 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait); 6172 #endif 6173 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK); 6174 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf); 6175 6176 cookie = 0; 6177 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 6178 msg = NULL; 6179 if (ret) { 6180 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d " 6181 "(%s) (freq=%u wait=%u)", ret, strerror(-ret), 6182 freq, wait); 6183 goto nla_put_failure; 6184 } 6185 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; " 6186 "cookie 0x%llx", (long long unsigned int) cookie); 6187 6188 if (cookie_out) 6189 *cookie_out = cookie; 6190 6191 nla_put_failure: 6192 nlmsg_free(msg); 6193 return ret; 6194 } 6195 6196 6197 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq, 6198 unsigned int wait_time, 6199 const u8 *dst, const u8 *src, 6200 const u8 *bssid, 6201 const u8 *data, size_t data_len) 6202 { 6203 struct i802_bss *bss = priv; 6204 struct wpa_driver_nl80211_data *drv = bss->drv; 6205 int ret = -1; 6206 u8 *buf; 6207 struct ieee80211_hdr *hdr; 6208 6209 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, " 6210 "wait=%d ms)", drv->ifindex, wait_time); 6211 6212 buf = os_zalloc(24 + data_len); 6213 if (buf == NULL) 6214 return ret; 6215 os_memcpy(buf + 24, data, data_len); 6216 hdr = (struct ieee80211_hdr *) buf; 6217 hdr->frame_control = 6218 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); 6219 os_memcpy(hdr->addr1, dst, ETH_ALEN); 6220 os_memcpy(hdr->addr2, src, ETH_ALEN); 6221 os_memcpy(hdr->addr3, bssid, ETH_ALEN); 6222 6223 if (drv->nlmode == NL80211_IFTYPE_AP) 6224 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len); 6225 else 6226 ret = nl80211_send_frame_cmd(drv, freq, wait_time, buf, 6227 24 + data_len, 6228 &drv->send_action_cookie); 6229 6230 os_free(buf); 6231 return ret; 6232 } 6233 6234 6235 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv) 6236 { 6237 struct i802_bss *bss = priv; 6238 struct wpa_driver_nl80211_data *drv = bss->drv; 6239 struct nl_msg *msg; 6240 int ret; 6241 6242 msg = nlmsg_alloc(); 6243 if (!msg) 6244 return; 6245 6246 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6247 NL80211_CMD_FRAME_WAIT_CANCEL, 0); 6248 6249 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6250 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie); 6251 6252 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6253 msg = NULL; 6254 if (ret) 6255 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d " 6256 "(%s)", ret, strerror(-ret)); 6257 6258 nla_put_failure: 6259 nlmsg_free(msg); 6260 } 6261 6262 6263 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq, 6264 unsigned int duration) 6265 { 6266 struct i802_bss *bss = priv; 6267 struct wpa_driver_nl80211_data *drv = bss->drv; 6268 struct nl_msg *msg; 6269 int ret; 6270 u64 cookie; 6271 6272 msg = nlmsg_alloc(); 6273 if (!msg) 6274 return -1; 6275 6276 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6277 NL80211_CMD_REMAIN_ON_CHANNEL, 0); 6278 6279 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6280 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); 6281 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration); 6282 6283 cookie = 0; 6284 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie); 6285 if (ret == 0) { 6286 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie " 6287 "0x%llx for freq=%u MHz duration=%u", 6288 (long long unsigned int) cookie, freq, duration); 6289 drv->remain_on_chan_cookie = cookie; 6290 return 0; 6291 } 6292 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel " 6293 "(freq=%d duration=%u): %d (%s)", 6294 freq, duration, ret, strerror(-ret)); 6295 nla_put_failure: 6296 return -1; 6297 } 6298 6299 6300 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv) 6301 { 6302 struct i802_bss *bss = priv; 6303 struct wpa_driver_nl80211_data *drv = bss->drv; 6304 struct nl_msg *msg; 6305 int ret; 6306 6307 if (!drv->pending_remain_on_chan) { 6308 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel " 6309 "to cancel"); 6310 return -1; 6311 } 6312 6313 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie " 6314 "0x%llx", 6315 (long long unsigned int) drv->remain_on_chan_cookie); 6316 6317 msg = nlmsg_alloc(); 6318 if (!msg) 6319 return -1; 6320 6321 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6322 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0); 6323 6324 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 6325 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie); 6326 6327 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6328 if (ret == 0) 6329 return 0; 6330 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: " 6331 "%d (%s)", ret, strerror(-ret)); 6332 nla_put_failure: 6333 return -1; 6334 } 6335 6336 6337 static int wpa_driver_nl80211_probe_req_report(void *priv, int report) 6338 { 6339 struct i802_bss *bss = priv; 6340 struct wpa_driver_nl80211_data *drv = bss->drv; 6341 6342 if (!report) { 6343 if (drv->nl_handle_preq) { 6344 eloop_unregister_read_sock( 6345 nl_socket_get_fd(drv->nl_handle_preq)); 6346 nl_cache_free(drv->nl_cache_preq); 6347 nl80211_handle_destroy(drv->nl_handle_preq); 6348 drv->nl_handle_preq = NULL; 6349 } 6350 return 0; 6351 } 6352 6353 if (drv->nl_handle_preq) { 6354 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting " 6355 "already on!"); 6356 return 0; 6357 } 6358 6359 drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb); 6360 if (drv->nl_handle_preq == NULL) { 6361 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate " 6362 "netlink callbacks (preq)"); 6363 goto out_err1; 6364 } 6365 6366 if (genl_connect(drv->nl_handle_preq)) { 6367 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to " 6368 "generic netlink (preq)"); 6369 goto out_err2; 6370 return -1; 6371 } 6372 6373 #ifdef CONFIG_LIBNL20 6374 if (genl_ctrl_alloc_cache(drv->nl_handle_preq, 6375 &drv->nl_cache_preq) < 0) { 6376 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 6377 "netlink cache (preq)"); 6378 goto out_err2; 6379 } 6380 #else /* CONFIG_LIBNL20 */ 6381 drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq); 6382 if (drv->nl_cache_preq == NULL) { 6383 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 6384 "netlink cache (preq)"); 6385 goto out_err2; 6386 } 6387 #endif /* CONFIG_LIBNL20 */ 6388 6389 if (nl80211_register_frame(drv, drv->nl_handle_preq, 6390 (WLAN_FC_TYPE_MGMT << 2) | 6391 (WLAN_FC_STYPE_PROBE_REQ << 4), 6392 NULL, 0) < 0) { 6393 goto out_err3; 6394 } 6395 6396 #ifdef ANDROID_BRCM_P2P_PATCH 6397 if (drv->nlmode != NL80211_IFTYPE_AP && 6398 drv->nlmode != NL80211_IFTYPE_P2P_GO) { 6399 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only " 6400 "allowed in AP or P2P GO mode (iftype=%d)", 6401 drv->nlmode); 6402 goto done; 6403 } 6404 6405 if (nl80211_register_frame(drv, drv->nl_handle_preq, 6406 (WLAN_FC_TYPE_MGMT << 2) | 6407 (WLAN_FC_STYPE_ASSOC_REQ << 4), 6408 NULL, 0) < 0) { 6409 goto out_err3; 6410 } 6411 6412 if (nl80211_register_frame(drv, drv->nl_handle_preq, 6413 (WLAN_FC_TYPE_MGMT << 2) | 6414 (WLAN_FC_STYPE_REASSOC_REQ << 4), 6415 NULL, 0) < 0) { 6416 goto out_err3; 6417 } 6418 6419 if (nl80211_register_frame(drv, drv->nl_handle_preq, 6420 (WLAN_FC_TYPE_MGMT << 2) | 6421 (WLAN_FC_STYPE_DISASSOC << 4), 6422 NULL, 0) < 0) { 6423 goto out_err3; 6424 } 6425 6426 if (nl80211_register_frame(drv, drv->nl_handle_preq, 6427 (WLAN_FC_TYPE_MGMT << 2) | 6428 (WLAN_FC_STYPE_DEAUTH << 4), 6429 NULL, 0) < 0) { 6430 goto out_err3; 6431 } 6432 6433 done: 6434 #endif 6435 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq), 6436 wpa_driver_nl80211_event_receive, drv, 6437 drv->nl_handle_preq); 6438 6439 return 0; 6440 6441 out_err3: 6442 nl_cache_free(drv->nl_cache_preq); 6443 out_err2: 6444 nl80211_handle_destroy(drv->nl_handle_preq); 6445 drv->nl_handle_preq = NULL; 6446 out_err1: 6447 return -1; 6448 } 6449 6450 6451 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 6452 int ifindex, int disabled) 6453 { 6454 struct nl_msg *msg; 6455 struct nlattr *bands, *band; 6456 int ret; 6457 6458 msg = nlmsg_alloc(); 6459 if (!msg) 6460 return -1; 6461 6462 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6463 NL80211_CMD_SET_TX_BITRATE_MASK, 0); 6464 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); 6465 6466 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES); 6467 if (!bands) 6468 goto nla_put_failure; 6469 6470 /* 6471 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything 6472 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS 6473 * rates. All 5 GHz rates are left enabled. 6474 */ 6475 band = nla_nest_start(msg, NL80211_BAND_2GHZ); 6476 if (!band) 6477 goto nla_put_failure; 6478 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8, 6479 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 6480 nla_nest_end(msg, band); 6481 6482 nla_nest_end(msg, bands); 6483 6484 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 6485 msg = NULL; 6486 if (ret) { 6487 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d " 6488 "(%s)", ret, strerror(-ret)); 6489 } 6490 6491 return ret; 6492 6493 nla_put_failure: 6494 nlmsg_free(msg); 6495 return -1; 6496 } 6497 6498 6499 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled) 6500 { 6501 struct i802_bss *bss = priv; 6502 struct wpa_driver_nl80211_data *drv = bss->drv; 6503 drv->disable_11b_rates = disabled; 6504 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled); 6505 } 6506 6507 6508 static int wpa_driver_nl80211_deinit_ap(void *priv) 6509 { 6510 struct i802_bss *bss = priv; 6511 struct wpa_driver_nl80211_data *drv = bss->drv; 6512 if (drv->nlmode != NL80211_IFTYPE_AP) 6513 return -1; 6514 wpa_driver_nl80211_del_beacon(drv); 6515 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA); 6516 } 6517 6518 6519 static void wpa_driver_nl80211_resume(void *priv) 6520 { 6521 struct i802_bss *bss = priv; 6522 struct wpa_driver_nl80211_data *drv = bss->drv; 6523 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) { 6524 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on " 6525 "resume event"); 6526 } 6527 } 6528 6529 6530 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap, 6531 const u8 *ies, size_t ies_len) 6532 { 6533 struct i802_bss *bss = priv; 6534 struct wpa_driver_nl80211_data *drv = bss->drv; 6535 int ret; 6536 u8 *data, *pos; 6537 size_t data_len; 6538 u8 own_addr[ETH_ALEN]; 6539 6540 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0) 6541 return -1; 6542 6543 if (action != 1) { 6544 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action " 6545 "action %d", action); 6546 return -1; 6547 } 6548 6549 /* 6550 * Action frame payload: 6551 * Category[1] = 6 (Fast BSS Transition) 6552 * Action[1] = 1 (Fast BSS Transition Request) 6553 * STA Address 6554 * Target AP Address 6555 * FT IEs 6556 */ 6557 6558 data_len = 2 + 2 * ETH_ALEN + ies_len; 6559 data = os_malloc(data_len); 6560 if (data == NULL) 6561 return -1; 6562 pos = data; 6563 *pos++ = 0x06; /* FT Action category */ 6564 *pos++ = action; 6565 os_memcpy(pos, own_addr, ETH_ALEN); 6566 pos += ETH_ALEN; 6567 os_memcpy(pos, target_ap, ETH_ALEN); 6568 pos += ETH_ALEN; 6569 os_memcpy(pos, ies, ies_len); 6570 6571 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0, 6572 drv->bssid, own_addr, drv->bssid, 6573 data, data_len); 6574 os_free(data); 6575 6576 return ret; 6577 } 6578 6579 6580 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis) 6581 { 6582 struct i802_bss *bss = priv; 6583 struct wpa_driver_nl80211_data *drv = bss->drv; 6584 struct nl_msg *msg, *cqm = NULL; 6585 6586 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d " 6587 "hysteresis=%d", threshold, hysteresis); 6588 6589 msg = nlmsg_alloc(); 6590 if (!msg) 6591 return -1; 6592 6593 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 6594 0, NL80211_CMD_SET_CQM, 0); 6595 6596 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 6597 6598 cqm = nlmsg_alloc(); 6599 if (cqm == NULL) 6600 return -1; 6601 6602 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold); 6603 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis); 6604 nla_put_nested(msg, NL80211_ATTR_CQM, cqm); 6605 6606 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0) 6607 return 0; 6608 msg = NULL; 6609 6610 nla_put_failure: 6611 if (cqm) 6612 nlmsg_free(cqm); 6613 nlmsg_free(msg); 6614 return -1; 6615 } 6616 6617 6618 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si) 6619 { 6620 struct i802_bss *bss = priv; 6621 struct wpa_driver_nl80211_data *drv = bss->drv; 6622 int res; 6623 6624 os_memset(si, 0, sizeof(*si)); 6625 res = nl80211_get_link_signal(drv, si); 6626 if (res != 0) 6627 return res; 6628 6629 return nl80211_get_link_noise(drv, si); 6630 } 6631 6632 6633 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len, 6634 int encrypt) 6635 { 6636 struct i802_bss *bss = priv; 6637 struct wpa_driver_nl80211_data *drv = bss->drv; 6638 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt); 6639 } 6640 6641 6642 static int nl80211_set_intra_bss(void *priv, int enabled) 6643 { 6644 struct i802_bss *bss = priv; 6645 struct wpa_driver_nl80211_data *drv = bss->drv; 6646 struct nl_msg *msg; 6647 6648 msg = nlmsg_alloc(); 6649 if (!msg) 6650 return -ENOMEM; 6651 6652 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, 6653 NL80211_CMD_SET_BSS, 0); 6654 6655 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6656 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled); 6657 6658 return send_and_recv_msgs(drv, msg, NULL, NULL); 6659 nla_put_failure: 6660 return -ENOBUFS; 6661 } 6662 6663 6664 static int nl80211_set_param(void *priv, const char *param) 6665 { 6666 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param); 6667 if (param == NULL) 6668 return 0; 6669 6670 #ifdef CONFIG_P2P 6671 if (os_strstr(param, "use_p2p_group_interface=1")) { 6672 struct i802_bss *bss = priv; 6673 struct wpa_driver_nl80211_data *drv = bss->drv; 6674 6675 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 6676 "interface"); 6677 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 6678 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 6679 } 6680 #endif /* CONFIG_P2P */ 6681 6682 return 0; 6683 } 6684 6685 6686 static void * nl80211_global_init(void) 6687 { 6688 struct nl80211_global *global; 6689 global = os_zalloc(sizeof(*global)); 6690 if (global == NULL) 6691 return NULL; 6692 dl_list_init(&global->interfaces); 6693 return global; 6694 } 6695 6696 6697 static void nl80211_global_deinit(void *priv) 6698 { 6699 struct nl80211_global *global = priv; 6700 if (global == NULL) 6701 return; 6702 if (!dl_list_empty(&global->interfaces)) { 6703 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at " 6704 "nl80211_global_deinit", 6705 dl_list_len(&global->interfaces)); 6706 } 6707 os_free(global); 6708 } 6709 6710 6711 static const char * nl80211_get_radio_name(void *priv) 6712 { 6713 struct i802_bss *bss = priv; 6714 struct wpa_driver_nl80211_data *drv = bss->drv; 6715 return drv->phyname; 6716 } 6717 6718 6719 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid, 6720 const u8 *pmkid) 6721 { 6722 struct nl_msg *msg; 6723 6724 msg = nlmsg_alloc(); 6725 if (!msg) 6726 return -ENOMEM; 6727 6728 genlmsg_put(msg, 0, 0, genl_family_get_id(bss->drv->nl80211), 0, 0, 6729 cmd, 0); 6730 6731 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)); 6732 if (pmkid) 6733 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid); 6734 if (bssid) 6735 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); 6736 6737 return send_and_recv_msgs(bss->drv, msg, NULL, NULL); 6738 nla_put_failure: 6739 return -ENOBUFS; 6740 } 6741 6742 6743 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 6744 { 6745 struct i802_bss *bss = priv; 6746 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid)); 6747 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid); 6748 } 6749 6750 6751 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid) 6752 { 6753 struct i802_bss *bss = priv; 6754 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR, 6755 MAC2STR(bssid)); 6756 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid); 6757 } 6758 6759 6760 static int nl80211_flush_pmkid(void *priv) 6761 { 6762 struct i802_bss *bss = priv; 6763 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs"); 6764 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL); 6765 } 6766 6767 6768 const struct wpa_driver_ops wpa_driver_nl80211_ops = { 6769 .name = "nl80211", 6770 .desc = "Linux nl80211/cfg80211", 6771 .get_bssid = wpa_driver_nl80211_get_bssid, 6772 .get_ssid = wpa_driver_nl80211_get_ssid, 6773 .set_key = wpa_driver_nl80211_set_key, 6774 .scan2 = wpa_driver_nl80211_scan, 6775 .get_scan_results2 = wpa_driver_nl80211_get_scan_results, 6776 .deauthenticate = wpa_driver_nl80211_deauthenticate, 6777 .disassociate = wpa_driver_nl80211_disassociate, 6778 .authenticate = wpa_driver_nl80211_authenticate, 6779 .associate = wpa_driver_nl80211_associate, 6780 .global_init = nl80211_global_init, 6781 .global_deinit = nl80211_global_deinit, 6782 .init2 = wpa_driver_nl80211_init, 6783 .deinit = wpa_driver_nl80211_deinit, 6784 .get_capa = wpa_driver_nl80211_get_capa, 6785 .set_operstate = wpa_driver_nl80211_set_operstate, 6786 .set_supp_port = wpa_driver_nl80211_set_supp_port, 6787 .set_country = wpa_driver_nl80211_set_country, 6788 .set_beacon = wpa_driver_nl80211_set_beacon, 6789 .if_add = wpa_driver_nl80211_if_add, 6790 .if_remove = wpa_driver_nl80211_if_remove, 6791 .send_mlme = wpa_driver_nl80211_send_mlme, 6792 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data, 6793 .sta_add = wpa_driver_nl80211_sta_add, 6794 .sta_remove = wpa_driver_nl80211_sta_remove, 6795 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol, 6796 .sta_set_flags = wpa_driver_nl80211_sta_set_flags, 6797 #ifdef HOSTAPD 6798 .hapd_init = i802_init, 6799 .hapd_deinit = i802_deinit, 6800 .set_wds_sta = i802_set_wds_sta, 6801 #endif /* HOSTAPD */ 6802 #if defined(HOSTAPD) || defined(CONFIG_AP) 6803 .get_seqnum = i802_get_seqnum, 6804 .flush = i802_flush, 6805 .read_sta_data = i802_read_sta_data, 6806 .get_inact_sec = i802_get_inact_sec, 6807 .sta_clear_stats = i802_sta_clear_stats, 6808 .set_rts = i802_set_rts, 6809 .set_frag = i802_set_frag, 6810 .set_cts_protect = i802_set_cts_protect, 6811 .set_preamble = i802_set_preamble, 6812 .set_short_slot_time = i802_set_short_slot_time, 6813 .set_tx_queue_params = i802_set_tx_queue_params, 6814 .set_sta_vlan = i802_set_sta_vlan, 6815 .set_ht_params = i802_set_ht_params, 6816 .set_rate_sets = i802_set_rate_sets, 6817 .sta_deauth = i802_sta_deauth, 6818 .sta_disassoc = i802_sta_disassoc, 6819 #endif /* HOSTAPD || CONFIG_AP */ 6820 .set_freq = i802_set_freq, 6821 .send_action = wpa_driver_nl80211_send_action, 6822 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait, 6823 .remain_on_channel = wpa_driver_nl80211_remain_on_channel, 6824 .cancel_remain_on_channel = 6825 wpa_driver_nl80211_cancel_remain_on_channel, 6826 .probe_req_report = wpa_driver_nl80211_probe_req_report, 6827 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates, 6828 .deinit_ap = wpa_driver_nl80211_deinit_ap, 6829 .resume = wpa_driver_nl80211_resume, 6830 .send_ft_action = nl80211_send_ft_action, 6831 .signal_monitor = nl80211_signal_monitor, 6832 .signal_poll = nl80211_signal_poll, 6833 .send_frame = nl80211_send_frame, 6834 .set_intra_bss = nl80211_set_intra_bss, 6835 .set_param = nl80211_set_param, 6836 .get_radio_name = nl80211_get_radio_name, 6837 .add_pmkid = nl80211_add_pmkid, 6838 .remove_pmkid = nl80211_remove_pmkid, 6839 .flush_pmkid = nl80211_flush_pmkid, 6840 #ifdef ANDROID_BRCM_P2P_PATCH 6841 .get_noa = wpa_driver_get_p2p_noa, 6842 .set_noa = wpa_driver_set_p2p_noa, 6843 .set_p2p_powersave = wpa_driver_set_p2p_ps, 6844 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie, 6845 #endif 6846 #ifdef ANDROID 6847 .driver_cmd = wpa_driver_nl80211_driver_cmd, 6848 #endif 6849 }; 6850
