1 /****************************************************************************** 2 3 L I B R M N E T C T L . C 4 5 Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. 6 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions are 9 met: 10 * Redistributions of source code must retain the above copyright 11 notice, this list of conditions and the following disclaimer. 12 * Redistributions in binary form must reproduce the above 13 copyright notice, this list of conditions and the following 14 disclaimer in the documentation and/or other materials provided 15 with the distribution. 16 * Neither the name of The Linux Foundation nor the names of its 17 contributors may be used to endorse or promote products derived 18 from this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 21 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 24 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 27 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 29 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 30 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 34 /*! 35 * @file librmnetctl.c 36 * @brief rmnet control API's implementation file 37 */ 38 39 /*=========================================================================== 40 INCLUDE FILES 41 ===========================================================================*/ 42 43 #include <sys/socket.h> 44 #include <stdint.h> 45 #include <linux/netlink.h> 46 #include <string.h> 47 #include <stdio.h> 48 #include <unistd.h> 49 #include <stdlib.h> 50 #include <linux/rmnet_data.h> 51 #include "librmnetctl_hndl.h" 52 #include "librmnetctl.h" 53 54 #ifdef USE_GLIB 55 #include <glib.h> 56 #define strlcpy g_strlcpy 57 #endif 58 59 #define RMNETCTL_SOCK_FLAG 0 60 #define ROOT_USER_ID 0 61 #define MIN_VALID_PROCESS_ID 0 62 #define MIN_VALID_SOCKET_FD 0 63 #define KERNEL_PROCESS_ID 0 64 #define UNICAST 0 65 #define MAX_BUF_SIZE sizeof(struct nlmsghdr) + sizeof(struct rmnet_nl_msg_s) 66 #define INGRESS_FLAGS_MASK (RMNET_INGRESS_FIX_ETHERNET | \ 67 RMNET_INGRESS_FORMAT_MAP | \ 68 RMNET_INGRESS_FORMAT_DEAGGREGATION | \ 69 RMNET_INGRESS_FORMAT_DEMUXING | \ 70 RMNET_INGRESS_FORMAT_MAP_COMMANDS | \ 71 RMNET_INGRESS_FORMAT_MAP_CKSUMV3 | \ 72 RMNET_INGRESS_FORMAT_MAP_CKSUMV4) 73 #define EGRESS_FLAGS_MASK (RMNET_EGRESS_FORMAT__RESERVED__ | \ 74 RMNET_EGRESS_FORMAT_MAP | \ 75 RMNET_EGRESS_FORMAT_AGGREGATION | \ 76 RMNET_EGRESS_FORMAT_MUXING | \ 77 RMNET_EGRESS_FORMAT_MAP_CKSUMV3 | \ 78 RMNET_EGRESS_FORMAT_MAP_CKSUMV4) 79 80 #define min(a, b) (((a) < (b)) ? (a) : (b)) 81 /*=========================================================================== 82 LOCAL FUNCTION DEFINITIONS 83 ===========================================================================*/ 84 /*! 85 * @brief Synchronous method to send and receive messages to and from the kernel 86 * using netlink sockets 87 * @details Increments the transaction id for each message sent to the kernel. 88 * Sends the netlink message to the kernel and receives the response from the 89 * kernel. 90 * @param *hndl RmNet handle for this transaction 91 * @param request Message to be sent to the kernel 92 * @param response Message received from the kernel 93 * @return RMNETCTL_API_SUCCESS if successfully able to send and receive message 94 * from the kernel 95 * @return RMNETCTL_API_ERR_HNDL_INVALID if RmNet handle for the transaction was 96 * NULL 97 * @return RMNETCTL_API_ERR_REQUEST_NULL not enough memory to create buffer for 98 * sending the message 99 * @return RMNETCTL_API_ERR_MESSAGE_SEND if could not send the message to kernel 100 * @return RMNETCTL_API_ERR_MESSAGE_RECEIVE if could not receive message from the 101 * kernel 102 * @return RMNETCTL_API_ERR_MESSAGE_TYPE if the request and response type do not 103 * match 104 */ 105 static uint16_t rmnetctl_transact(rmnetctl_hndl_t *hndl, 106 struct rmnet_nl_msg_s *request, 107 struct rmnet_nl_msg_s *response) { 108 uint8_t *request_buf, *response_buf; 109 struct nlmsghdr *nlmsghdr_val; 110 struct rmnet_nl_msg_s *rmnet_nl_msg_s_val; 111 ssize_t bytes_read = -1; 112 uint16_t return_code = RMNETCTL_API_ERR_HNDL_INVALID; 113 struct sockaddr_nl* __attribute__((__may_alias__)) saddr_ptr; 114 request_buf = NULL; 115 response_buf = NULL; 116 nlmsghdr_val = NULL; 117 rmnet_nl_msg_s_val = NULL; 118 do { 119 if (!hndl){ 120 break; 121 } 122 if (!request){ 123 return_code = RMNETCTL_API_ERR_REQUEST_NULL; 124 break; 125 } 126 if (!response){ 127 return_code = RMNETCTL_API_ERR_RESPONSE_NULL; 128 break; 129 } 130 request_buf = (uint8_t *)malloc(MAX_BUF_SIZE * sizeof(uint8_t)); 131 if (!request_buf){ 132 return_code = RMNETCTL_API_ERR_REQUEST_NULL; 133 break; 134 } 135 136 response_buf = (uint8_t *)malloc(MAX_BUF_SIZE * sizeof(uint8_t)); 137 if (!response_buf) { 138 free(request_buf); 139 return_code = RMNETCTL_API_ERR_RESPONSE_NULL; 140 break; 141 } 142 143 nlmsghdr_val = (struct nlmsghdr *)request_buf; 144 rmnet_nl_msg_s_val = (struct rmnet_nl_msg_s *)NLMSG_DATA(request_buf); 145 146 memset(request_buf, 0, MAX_BUF_SIZE*sizeof(uint8_t)); 147 memset(response_buf, 0, MAX_BUF_SIZE*sizeof(uint8_t)); 148 149 nlmsghdr_val->nlmsg_seq = hndl->transaction_id; 150 nlmsghdr_val->nlmsg_pid = hndl->pid; 151 nlmsghdr_val->nlmsg_len = MAX_BUF_SIZE; 152 153 memcpy((void *)NLMSG_DATA(request_buf), request, 154 sizeof(struct rmnet_nl_msg_s)); 155 156 rmnet_nl_msg_s_val->crd = RMNET_NETLINK_MSG_COMMAND; 157 hndl->transaction_id++; 158 159 saddr_ptr = &hndl->dest_addr; 160 socklen_t addrlen = sizeof(struct sockaddr_nl); 161 if (sendto(hndl->netlink_fd, 162 request_buf, 163 MAX_BUF_SIZE, 164 RMNETCTL_SOCK_FLAG, 165 (struct sockaddr*)saddr_ptr, 166 sizeof(struct sockaddr_nl)) < 0) { 167 return_code = RMNETCTL_API_ERR_MESSAGE_SEND; 168 free(request_buf); 169 free(response_buf); 170 break; 171 } 172 173 saddr_ptr = &hndl->src_addr; 174 bytes_read = recvfrom(hndl->netlink_fd, 175 response_buf, 176 MAX_BUF_SIZE, 177 RMNETCTL_SOCK_FLAG, 178 (struct sockaddr*)saddr_ptr, 179 &addrlen); 180 if (bytes_read < 0) { 181 return_code = RMNETCTL_API_ERR_MESSAGE_RECEIVE; 182 free(request_buf); 183 free(response_buf); 184 break; 185 } 186 187 memcpy(response, (void *)NLMSG_DATA(response_buf), 188 sizeof(struct rmnet_nl_msg_s)); 189 if (sizeof(*response) < sizeof(struct rmnet_nl_msg_s)) { 190 return_code = RMNETCTL_API_ERR_RESPONSE_NULL; 191 free(request_buf); 192 free(response_buf); 193 break; 194 } 195 196 if (request->message_type != response->message_type) { 197 return_code = RMNETCTL_API_ERR_MESSAGE_TYPE; 198 free(request_buf); 199 free(response_buf); 200 break; 201 } 202 return_code = RMNETCTL_SUCCESS; 203 free(request_buf); 204 free(response_buf); 205 } while(0); 206 return return_code; 207 } 208 209 /*! 210 * @brief Static function to check the dev name 211 * @details Checks if the name is not NULL and if the name is less than the 212 * RMNET_MAX_STR_LEN 213 * @param dev_name Name of the device 214 * @return RMNETCTL_SUCCESS if successful 215 * @return RMNETCTL_INVALID_ARG if invalid arguments were passed to the API 216 */ 217 static inline int _rmnetctl_check_dev_name(const char *dev_name) { 218 int return_code = RMNETCTL_INVALID_ARG; 219 do { 220 if (!dev_name) 221 break; 222 if (strlen(dev_name) >= RMNET_MAX_STR_LEN) 223 break; 224 return_code = RMNETCTL_SUCCESS; 225 } while(0); 226 return return_code; 227 } 228 229 /*! 230 * @brief Static function to check the string length after a copy 231 * @details Checks if the string length is not lesser than zero and lesser than 232 * RMNET_MAX_STR_LEN 233 * @param str_len length of the string after a copy 234 * @param error_code Status code of this operation 235 * @return RMNETCTL_SUCCESS if successful 236 * @return RMNETCTL_LIB_ERR if there was a library error. Check error_code 237 */ 238 static inline int _rmnetctl_check_len(size_t str_len, uint16_t *error_code) { 239 int return_code = RMNETCTL_LIB_ERR; 240 do { 241 if (str_len > RMNET_MAX_STR_LEN) { 242 *error_code = RMNETCTL_API_ERR_STRING_TRUNCATION; 243 break; 244 } 245 return_code = RMNETCTL_SUCCESS; 246 } while(0); 247 return return_code; 248 } 249 250 /*! 251 * @brief Static function to check the response type 252 * @details Checks if the response type of this message was return code 253 * @param crd The crd field passed 254 * @param error_code Status code of this operation 255 * @return RMNETCTL_SUCCESS if successful 256 * @return RMNETCTL_LIB_ERR if there was a library error. Check error_code 257 */ 258 static inline int _rmnetctl_check_code(int crd, uint16_t *error_code) { 259 int return_code = RMNETCTL_LIB_ERR; 260 do { 261 if (crd != RMNET_NETLINK_MSG_RETURNCODE) { 262 *error_code = RMNETCTL_API_ERR_RETURN_TYPE; 263 break; 264 } 265 return_code = RMNETCTL_SUCCESS; 266 } while(0); 267 return return_code; 268 } 269 270 /*! 271 * @brief Static function to check the response type 272 * @details Checks if the response type of this message was data 273 * @param crd The crd field passed 274 * @param error_code Status code of this operation 275 * @return RMNETCTL_SUCCESS if successful 276 * @return RMNETCTL_LIB_ERR if there was a library error. Check error_code 277 */ 278 static inline int _rmnetctl_check_data(int crd, uint16_t *error_code) { 279 int return_code = RMNETCTL_LIB_ERR; 280 do { 281 if (crd != RMNET_NETLINK_MSG_RETURNDATA) { 282 *error_code = RMNETCTL_API_ERR_RETURN_TYPE; 283 break; 284 } 285 return_code = RMNETCTL_SUCCESS; 286 } while(0); 287 return return_code; 288 } 289 290 /*! 291 * @brief Static function to set the return value 292 * @details Checks if the error_code from the transaction is zero for a return 293 * code type message and sets the message type as RMNETCTL_SUCCESS 294 * @param crd The crd field passed 295 * @param error_code Status code of this operation 296 * @return RMNETCTL_SUCCESS if successful 297 * @return RMNETCTL_KERNEL_ERR if there was an error in the kernel. 298 * Check error_code 299 */ 300 static inline int _rmnetctl_set_codes(int error_val, uint16_t *error_code) { 301 int return_code = RMNETCTL_KERNEL_ERR; 302 if (error_val == RMNET_CONFIG_OK) 303 return_code = RMNETCTL_SUCCESS; 304 else 305 *error_code = (uint16_t)error_val + RMNETCTL_KERNEL_FIRST_ERR; 306 return return_code; 307 } 308 309 /*=========================================================================== 310 EXPOSED API 311 ===========================================================================*/ 312 313 int rmnetctl_init(rmnetctl_hndl_t **hndl, uint16_t *error_code) 314 { 315 pid_t pid = 0; 316 int netlink_fd = -1, return_code = RMNETCTL_LIB_ERR; 317 struct sockaddr_nl* __attribute__((__may_alias__)) saddr_ptr; 318 do { 319 if ((!hndl) || (!error_code)){ 320 return_code = RMNETCTL_INVALID_ARG; 321 break; 322 } 323 324 *hndl = (rmnetctl_hndl_t *)malloc(sizeof(rmnetctl_hndl_t)); 325 if (!*hndl) { 326 *error_code = RMNETCTL_API_ERR_HNDL_INVALID; 327 break; 328 } 329 330 memset(*hndl, 0, sizeof(rmnetctl_hndl_t)); 331 332 pid = getpid(); 333 if (pid < MIN_VALID_PROCESS_ID) { 334 free(*hndl); 335 *error_code = RMNETCTL_INIT_ERR_PROCESS_ID; 336 break; 337 } 338 (*hndl)->pid = (uint32_t)pid; 339 netlink_fd = socket(PF_NETLINK, SOCK_RAW, RMNET_NETLINK_PROTO); 340 if (netlink_fd < MIN_VALID_SOCKET_FD) { 341 free(*hndl); 342 *error_code = RMNETCTL_INIT_ERR_NETLINK_FD; 343 break; 344 } 345 346 (*hndl)->netlink_fd = netlink_fd; 347 348 memset(&(*hndl)->src_addr, 0, sizeof(struct sockaddr_nl)); 349 350 (*hndl)->src_addr.nl_family = AF_NETLINK; 351 (*hndl)->src_addr.nl_pid = (*hndl)->pid; 352 353 saddr_ptr = &(*hndl)->src_addr; 354 if (bind((*hndl)->netlink_fd, 355 (struct sockaddr*)saddr_ptr, 356 sizeof(struct sockaddr_nl)) < 0) { 357 close((*hndl)->netlink_fd); 358 free(*hndl); 359 *error_code = RMNETCTL_INIT_ERR_BIND; 360 break; 361 } 362 363 memset(&(*hndl)->dest_addr, 0, sizeof(struct sockaddr_nl)); 364 365 (*hndl)->dest_addr.nl_family = AF_NETLINK; 366 (*hndl)->dest_addr.nl_pid = KERNEL_PROCESS_ID; 367 (*hndl)->dest_addr.nl_groups = UNICAST; 368 369 return_code = RMNETCTL_SUCCESS; 370 } while(0); 371 return return_code; 372 } 373 374 void rmnetctl_cleanup(rmnetctl_hndl_t *hndl) 375 { 376 if (!hndl) 377 return; 378 close(hndl->netlink_fd); 379 free(hndl); 380 } 381 382 int rmnet_associate_network_device(rmnetctl_hndl_t *hndl, 383 const char *dev_name, 384 uint16_t *error_code, 385 uint8_t assoc_dev) 386 { 387 struct rmnet_nl_msg_s request, response; 388 size_t str_len = 0; 389 int return_code = RMNETCTL_LIB_ERR; 390 do { 391 if ((!hndl) || (!error_code) || _rmnetctl_check_dev_name(dev_name) || 392 ((assoc_dev != RMNETCTL_DEVICE_ASSOCIATE) && 393 (assoc_dev != RMNETCTL_DEVICE_UNASSOCIATE))) { 394 return_code = RMNETCTL_INVALID_ARG; 395 break; 396 } 397 398 if (assoc_dev == RMNETCTL_DEVICE_ASSOCIATE) 399 request.message_type = RMNET_NETLINK_ASSOCIATE_NETWORK_DEVICE; 400 else 401 request.message_type = RMNET_NETLINK_UNASSOCIATE_NETWORK_DEVICE; 402 403 request.arg_length = RMNET_MAX_STR_LEN; 404 str_len = strlcpy((char *)(request.data), dev_name, (size_t)RMNET_MAX_STR_LEN); 405 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 406 break; 407 408 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 409 != RMNETCTL_SUCCESS) 410 break; 411 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 412 break; 413 return_code = _rmnetctl_set_codes(response.return_code, error_code); 414 } while(0); 415 return return_code; 416 } 417 418 int rmnet_get_network_device_associated(rmnetctl_hndl_t *hndl, 419 const char *dev_name, 420 int *register_status, 421 uint16_t *error_code) { 422 struct rmnet_nl_msg_s request, response; 423 size_t str_len = 0; 424 int return_code = RMNETCTL_LIB_ERR; 425 do { 426 if ((!hndl) || (!register_status) || (!error_code) || 427 _rmnetctl_check_dev_name(dev_name)) { 428 return_code = RMNETCTL_INVALID_ARG; 429 break; 430 } 431 432 request.message_type = RMNET_NETLINK_GET_NETWORK_DEVICE_ASSOCIATED; 433 434 request.arg_length = RMNET_MAX_STR_LEN; 435 str_len = strlcpy((char *)(request.data), dev_name, RMNET_MAX_STR_LEN); 436 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 437 break; 438 439 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 440 != RMNETCTL_SUCCESS) 441 break; 442 443 if (_rmnetctl_check_data(response.crd, error_code) 444 != RMNETCTL_SUCCESS) { 445 if (_rmnetctl_check_code(response.crd, error_code) 446 == RMNETCTL_SUCCESS) 447 return_code = _rmnetctl_set_codes(response.return_code, 448 error_code); 449 break; 450 } 451 452 *register_status = response.return_code; 453 return_code = RMNETCTL_SUCCESS; 454 } while(0); 455 return return_code; 456 } 457 458 int rmnet_set_link_egress_data_format(rmnetctl_hndl_t *hndl, 459 uint32_t egress_flags, 460 uint16_t agg_size, 461 uint16_t agg_count, 462 const char *dev_name, 463 uint16_t *error_code) { 464 struct rmnet_nl_msg_s request, response; 465 size_t str_len = 0; 466 int return_code = RMNETCTL_LIB_ERR; 467 do { 468 if ((!hndl) || (!error_code) || _rmnetctl_check_dev_name(dev_name) || 469 ((~EGRESS_FLAGS_MASK) & egress_flags)) { 470 return_code = RMNETCTL_INVALID_ARG; 471 break; 472 } 473 474 request.message_type = RMNET_NETLINK_SET_LINK_EGRESS_DATA_FORMAT; 475 476 request.arg_length = RMNET_MAX_STR_LEN + 477 sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t); 478 str_len = strlcpy((char *)(request.data_format.dev), 479 dev_name, 480 RMNET_MAX_STR_LEN); 481 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 482 break; 483 484 request.data_format.flags = egress_flags; 485 request.data_format.agg_size = agg_size; 486 request.data_format.agg_count = agg_count; 487 488 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 489 != RMNETCTL_SUCCESS) 490 break; 491 492 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 493 break; 494 495 return_code = _rmnetctl_set_codes(response.return_code, error_code); 496 } while(0); 497 return return_code; 498 } 499 500 int rmnet_get_link_egress_data_format(rmnetctl_hndl_t *hndl, 501 const char *dev_name, 502 uint32_t *egress_flags, 503 uint16_t *agg_size, 504 uint16_t *agg_count, 505 uint16_t *error_code) { 506 struct rmnet_nl_msg_s request, response; 507 size_t str_len = 0; 508 int return_code = RMNETCTL_LIB_ERR; 509 do { 510 if ((!hndl) || (!egress_flags) || (!agg_size) || (!agg_count) || 511 (!error_code) || _rmnetctl_check_dev_name(dev_name)) { 512 return_code = RMNETCTL_INVALID_ARG; 513 break; 514 } 515 request.message_type = RMNET_NETLINK_GET_LINK_EGRESS_DATA_FORMAT; 516 517 request.arg_length = RMNET_MAX_STR_LEN; 518 str_len = strlcpy((char *)(request.data_format.dev), 519 dev_name, 520 RMNET_MAX_STR_LEN); 521 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 522 break; 523 524 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 525 != RMNETCTL_SUCCESS) 526 break; 527 528 if (_rmnetctl_check_data(response.crd, error_code) 529 != RMNETCTL_SUCCESS) { 530 if (_rmnetctl_check_code(response.crd, error_code) 531 == RMNETCTL_SUCCESS) 532 return_code = _rmnetctl_set_codes(response.return_code, 533 error_code); 534 break; 535 } 536 537 *egress_flags = response.data_format.flags; 538 *agg_size = response.data_format.agg_size; 539 *agg_count = response.data_format.agg_count; 540 return_code = RMNETCTL_SUCCESS; 541 } while(0); 542 return return_code; 543 } 544 545 int rmnet_set_link_ingress_data_format_tailspace(rmnetctl_hndl_t *hndl, 546 uint32_t ingress_flags, 547 uint8_t tail_spacing, 548 const char *dev_name, 549 uint16_t *error_code) { 550 struct rmnet_nl_msg_s request, response; 551 size_t str_len = 0; 552 int return_code = RMNETCTL_LIB_ERR; 553 do { 554 if ((!hndl) || (!error_code) || _rmnetctl_check_dev_name(dev_name) || 555 ((~INGRESS_FLAGS_MASK) & ingress_flags)) { 556 return_code = RMNETCTL_INVALID_ARG; 557 break; 558 } 559 560 request.message_type = RMNET_NETLINK_SET_LINK_INGRESS_DATA_FORMAT; 561 562 request.arg_length = RMNET_MAX_STR_LEN + 563 sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t); 564 str_len = strlcpy((char *)(request.data_format.dev), 565 dev_name, 566 RMNET_MAX_STR_LEN); 567 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 568 break; 569 request.data_format.flags = ingress_flags; 570 request.data_format.tail_spacing = tail_spacing; 571 572 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 573 != RMNETCTL_SUCCESS) 574 break; 575 576 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 577 break; 578 579 return_code = _rmnetctl_set_codes(response.return_code, error_code); 580 } while(0); 581 return return_code; 582 } 583 584 int rmnet_get_link_ingress_data_format_tailspace(rmnetctl_hndl_t *hndl, 585 const char *dev_name, 586 uint32_t *ingress_flags, 587 uint8_t *tail_spacing, 588 uint16_t *error_code) { 589 struct rmnet_nl_msg_s request, response; 590 size_t str_len = 0; 591 int return_code = RMNETCTL_LIB_ERR; 592 do { 593 if ((!hndl) || (!error_code) || 594 _rmnetctl_check_dev_name(dev_name)) { 595 return_code = RMNETCTL_INVALID_ARG; 596 break; 597 } 598 599 request.message_type = RMNET_NETLINK_GET_LINK_INGRESS_DATA_FORMAT; 600 601 request.arg_length = RMNET_MAX_STR_LEN; 602 str_len = strlcpy((char *)(request.data_format.dev), 603 dev_name, 604 RMNET_MAX_STR_LEN); 605 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 606 break; 607 608 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 609 != RMNETCTL_SUCCESS) 610 break; 611 612 if (_rmnetctl_check_data(response.crd, error_code) 613 != RMNETCTL_SUCCESS) { 614 if (_rmnetctl_check_code(response.crd, error_code) 615 == RMNETCTL_SUCCESS) 616 return_code = _rmnetctl_set_codes(response.return_code, 617 error_code); 618 break; 619 } 620 621 if (ingress_flags) 622 *ingress_flags = response.data_format.flags; 623 624 if (tail_spacing) 625 *tail_spacing = response.data_format.tail_spacing; 626 627 return_code = RMNETCTL_SUCCESS; 628 } while(0); 629 return return_code; 630 } 631 632 int rmnet_set_logical_ep_config(rmnetctl_hndl_t *hndl, 633 int32_t ep_id, 634 uint8_t operating_mode, 635 const char *dev_name, 636 const char *next_dev, 637 uint16_t *error_code) { 638 struct rmnet_nl_msg_s request, response; 639 size_t str_len = 0; 640 int return_code = RMNETCTL_LIB_ERR; 641 do { 642 if ((!hndl) || ((ep_id < -1) || (ep_id > 31)) || (!error_code) || 643 _rmnetctl_check_dev_name(dev_name) || 644 _rmnetctl_check_dev_name(next_dev) || 645 operating_mode >= RMNET_EPMODE_LENGTH) { 646 return_code = RMNETCTL_INVALID_ARG; 647 break; 648 } 649 650 request.message_type = RMNET_NETLINK_SET_LOGICAL_EP_CONFIG; 651 652 request.arg_length = RMNET_MAX_STR_LEN + 653 RMNET_MAX_STR_LEN + sizeof(int32_t) + sizeof(uint8_t); 654 str_len = strlcpy((char *)(request.local_ep_config.dev), 655 dev_name, 656 RMNET_MAX_STR_LEN); 657 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 658 break; 659 660 str_len = strlcpy((char *)(request.local_ep_config.next_dev), 661 next_dev, 662 RMNET_MAX_STR_LEN); 663 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 664 break; 665 request.local_ep_config.ep_id = ep_id; 666 request.local_ep_config.operating_mode = operating_mode; 667 668 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 669 != RMNETCTL_SUCCESS) 670 break; 671 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 672 break; 673 674 return_code = _rmnetctl_set_codes(response.return_code, error_code); 675 } while(0); 676 return return_code; 677 } 678 679 int rmnet_unset_logical_ep_config(rmnetctl_hndl_t *hndl, 680 int32_t ep_id, 681 const char *dev_name, 682 uint16_t *error_code) { 683 struct rmnet_nl_msg_s request, response; 684 size_t str_len = 0; 685 int return_code = RMNETCTL_LIB_ERR; 686 do { 687 688 if ((!hndl) || ((ep_id < -1) || (ep_id > 31)) || (!error_code) || 689 _rmnetctl_check_dev_name(dev_name)) { 690 return_code = RMNETCTL_INVALID_ARG; 691 break; 692 } 693 694 request.message_type = RMNET_NETLINK_UNSET_LOGICAL_EP_CONFIG; 695 696 request.arg_length = RMNET_MAX_STR_LEN + sizeof(int32_t); 697 str_len = strlcpy((char *)(request.local_ep_config.dev), 698 dev_name, 699 RMNET_MAX_STR_LEN); 700 701 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 702 break; 703 704 request.local_ep_config.ep_id = ep_id; 705 706 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 707 != RMNETCTL_SUCCESS) 708 break; 709 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 710 break; 711 712 return_code = _rmnetctl_set_codes(response.return_code, error_code); 713 } while(0); 714 715 return return_code; 716 } 717 718 int rmnet_get_logical_ep_config(rmnetctl_hndl_t *hndl, 719 int32_t ep_id, 720 const char *dev_name, 721 uint8_t *operating_mode, 722 char **next_dev, 723 uint32_t next_dev_len, 724 uint16_t *error_code) { 725 struct rmnet_nl_msg_s request, response; 726 size_t str_len = 0; 727 int return_code = RMNETCTL_LIB_ERR; 728 do { 729 if ((!hndl) || (!operating_mode) || (!error_code) || ((ep_id < -1) || 730 (ep_id > 31)) || _rmnetctl_check_dev_name(dev_name) || (!next_dev) 731 || (0 == next_dev_len)) { 732 return_code = RMNETCTL_INVALID_ARG; 733 break; 734 } 735 736 request.message_type = RMNET_NETLINK_GET_LOGICAL_EP_CONFIG; 737 738 request.arg_length = RMNET_MAX_STR_LEN + sizeof(int32_t); 739 str_len = strlcpy((char *)(request.local_ep_config.dev), 740 dev_name, 741 RMNET_MAX_STR_LEN); 742 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 743 break; 744 745 request.local_ep_config.ep_id = ep_id; 746 747 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 748 != RMNETCTL_SUCCESS) 749 break; 750 751 if (_rmnetctl_check_data(response.crd, error_code) 752 != RMNETCTL_SUCCESS) { 753 if (_rmnetctl_check_code(response.crd, error_code) 754 == RMNETCTL_SUCCESS) 755 return_code = _rmnetctl_set_codes(response.return_code, 756 error_code); 757 break; 758 } 759 760 str_len = strlcpy(*next_dev, 761 (char *)(response.local_ep_config.next_dev), 762 min(RMNET_MAX_STR_LEN, next_dev_len)); 763 if (_rmnetctl_check_len(str_len, error_code) != RMNETCTL_SUCCESS) 764 break; 765 766 *operating_mode = response.local_ep_config.operating_mode; 767 return_code = RMNETCTL_SUCCESS; 768 } while(0); 769 return return_code; 770 } 771 772 int rmnet_new_vnd_prefix(rmnetctl_hndl_t *hndl, 773 uint32_t id, 774 uint16_t *error_code, 775 uint8_t new_vnd, 776 const char *prefix) 777 { 778 struct rmnet_nl_msg_s request, response; 779 int return_code = RMNETCTL_LIB_ERR; 780 size_t str_len = 0; 781 do { 782 if ((!hndl) || (!error_code) || 783 ((new_vnd != RMNETCTL_NEW_VND) && (new_vnd != RMNETCTL_FREE_VND))) { 784 return_code = RMNETCTL_INVALID_ARG; 785 break; 786 } 787 788 memset(request.vnd.vnd_name, 0, RMNET_MAX_STR_LEN); 789 if (new_vnd == RMNETCTL_NEW_VND) { 790 if (prefix) { 791 request.message_type =RMNET_NETLINK_NEW_VND_WITH_PREFIX; 792 str_len = strlcpy((char *)request.vnd.vnd_name, 793 prefix, RMNET_MAX_STR_LEN); 794 if (_rmnetctl_check_len(str_len, error_code) 795 != RMNETCTL_SUCCESS) 796 break; 797 } else { 798 request.message_type = RMNET_NETLINK_NEW_VND; 799 } 800 } else { 801 request.message_type = RMNET_NETLINK_FREE_VND; 802 } 803 804 request.arg_length = sizeof(uint32_t); 805 request.vnd.id = id; 806 807 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 808 != RMNETCTL_SUCCESS) 809 break; 810 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 811 break; 812 813 return_code = _rmnetctl_set_codes(response.return_code, error_code); 814 } while(0); 815 return return_code; 816 } 817 818 int rmnet_new_vnd(rmnetctl_hndl_t *hndl, 819 uint32_t id, 820 uint16_t *error_code, 821 uint8_t new_vnd) 822 { 823 return rmnet_new_vnd_prefix(hndl, id, error_code, new_vnd, 0); 824 } 825 826 int rmnet_get_vnd_name(rmnetctl_hndl_t *hndl, 827 uint32_t id, 828 uint16_t *error_code, 829 char *buf, 830 uint32_t buflen) 831 { 832 struct rmnet_nl_msg_s request, response; 833 uint32_t str_len; 834 int return_code = RMNETCTL_LIB_ERR; 835 do { 836 if ((!hndl) || (!error_code) || (!buf) || (0 == buflen)) { 837 return_code = RMNETCTL_INVALID_ARG; 838 break; 839 } 840 841 request.message_type = RMNET_NETLINK_GET_VND_NAME; 842 request.arg_length = sizeof(uint32_t); 843 request.vnd.id = id; 844 845 846 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 847 != RMNETCTL_SUCCESS) 848 break; 849 850 if (_rmnetctl_check_data(response.crd, error_code) 851 != RMNETCTL_SUCCESS) { 852 if (_rmnetctl_check_code(response.crd, error_code) 853 == RMNETCTL_SUCCESS) 854 return_code = _rmnetctl_set_codes(response.return_code, 855 error_code); 856 break; 857 } 858 859 str_len = (uint32_t)strlcpy(buf, 860 (char *)(response.vnd.vnd_name), 861 buflen); 862 if (str_len >= buflen) { 863 *error_code = RMNETCTL_API_ERR_STRING_TRUNCATION; 864 break; 865 } 866 867 return_code = RMNETCTL_SUCCESS; 868 } while (0); 869 return return_code; 870 } 871 872 int rmnet_add_del_vnd_tc_flow(rmnetctl_hndl_t *hndl, 873 uint32_t id, 874 uint32_t map_flow_id, 875 uint32_t tc_flow_id, 876 uint8_t set_flow, 877 uint16_t *error_code) { 878 struct rmnet_nl_msg_s request, response; 879 int return_code = RMNETCTL_LIB_ERR; 880 do { 881 if ((!hndl) || (!error_code) || ((set_flow != RMNETCTL_ADD_FLOW) && 882 (set_flow != RMNETCTL_DEL_FLOW))) { 883 return_code = RMNETCTL_INVALID_ARG; 884 break; 885 } 886 if (set_flow == RMNETCTL_ADD_FLOW) 887 request.message_type = RMNET_NETLINK_ADD_VND_TC_FLOW; 888 else 889 request.message_type = RMNET_NETLINK_DEL_VND_TC_FLOW; 890 891 request.arg_length = (sizeof(uint32_t))*3; 892 request.flow_control.id = id; 893 request.flow_control.map_flow_id = map_flow_id; 894 request.flow_control.tc_flow_id = tc_flow_id; 895 896 if ((*error_code = rmnetctl_transact(hndl, &request, &response)) 897 != RMNETCTL_SUCCESS) 898 break; 899 if (_rmnetctl_check_code(response.crd, error_code) != RMNETCTL_SUCCESS) 900 break; 901 return_code = _rmnetctl_set_codes(response.return_code, error_code); 902 } while(0); 903 return return_code; 904 } 905 906
