1 /* 2 * Copyright (c) 2004-2011 Atheros Communications Inc. 3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 19 20 #include "core.h" 21 #include "hif-ops.h" 22 #include "cfg80211.h" 23 #include "target.h" 24 #include "debug.h" 25 26 struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 *node_addr) 27 { 28 struct ath6kl *ar = vif->ar; 29 struct ath6kl_sta *conn = NULL; 30 u8 i, max_conn; 31 32 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 33 34 for (i = 0; i < max_conn; i++) { 35 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 36 conn = &ar->sta_list[i]; 37 break; 38 } 39 } 40 41 return conn; 42 } 43 44 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 45 { 46 struct ath6kl_sta *conn = NULL; 47 u8 ctr; 48 49 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 50 if (ar->sta_list[ctr].aid == aid) { 51 conn = &ar->sta_list[ctr]; 52 break; 53 } 54 } 55 return conn; 56 } 57 58 static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid, 59 u8 *wpaie, size_t ielen, u8 keymgmt, 60 u8 ucipher, u8 auth, u8 apsd_info) 61 { 62 struct ath6kl *ar = vif->ar; 63 struct ath6kl_sta *sta; 64 u8 free_slot; 65 66 free_slot = aid - 1; 67 68 sta = &ar->sta_list[free_slot]; 69 memcpy(sta->mac, mac, ETH_ALEN); 70 if (ielen <= ATH6KL_MAX_IE) 71 memcpy(sta->wpa_ie, wpaie, ielen); 72 sta->aid = aid; 73 sta->keymgmt = keymgmt; 74 sta->ucipher = ucipher; 75 sta->auth = auth; 76 sta->apsd_info = apsd_info; 77 78 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 79 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 80 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn); 81 } 82 83 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 84 { 85 struct ath6kl_sta *sta = &ar->sta_list[i]; 86 struct ath6kl_mgmt_buff *entry, *tmp; 87 88 /* empty the queued pkts in the PS queue if any */ 89 spin_lock_bh(&sta->psq_lock); 90 skb_queue_purge(&sta->psq); 91 skb_queue_purge(&sta->apsdq); 92 93 if (sta->mgmt_psq_len != 0) { 94 list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) { 95 kfree(entry); 96 } 97 INIT_LIST_HEAD(&sta->mgmt_psq); 98 sta->mgmt_psq_len = 0; 99 } 100 101 spin_unlock_bh(&sta->psq_lock); 102 103 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 104 sizeof(struct wmi_per_sta_stat)); 105 memset(sta->mac, 0, ETH_ALEN); 106 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 107 sta->aid = 0; 108 sta->sta_flags = 0; 109 110 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 111 aggr_reset_state(sta->aggr_conn); 112 } 113 114 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 115 { 116 u8 i, removed = 0; 117 118 if (is_zero_ether_addr(mac)) 119 return removed; 120 121 if (is_broadcast_ether_addr(mac)) { 122 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 123 124 for (i = 0; i < AP_MAX_NUM_STA; i++) { 125 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 126 ath6kl_sta_cleanup(ar, i); 127 removed = 1; 128 } 129 } 130 } else { 131 for (i = 0; i < AP_MAX_NUM_STA; i++) { 132 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 133 ath6kl_dbg(ATH6KL_DBG_TRC, 134 "deleting station %pM aid=%d reason=%d\n", 135 mac, ar->sta_list[i].aid, reason); 136 ath6kl_sta_cleanup(ar, i); 137 removed = 1; 138 break; 139 } 140 } 141 } 142 143 return removed; 144 } 145 146 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 147 { 148 struct ath6kl *ar = devt; 149 return ar->ac2ep_map[ac]; 150 } 151 152 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 153 { 154 struct ath6kl_cookie *cookie; 155 156 cookie = ar->cookie_list; 157 if (cookie != NULL) { 158 ar->cookie_list = cookie->arc_list_next; 159 ar->cookie_count--; 160 } 161 162 return cookie; 163 } 164 165 void ath6kl_cookie_init(struct ath6kl *ar) 166 { 167 u32 i; 168 169 ar->cookie_list = NULL; 170 ar->cookie_count = 0; 171 172 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 173 174 for (i = 0; i < MAX_COOKIE_NUM; i++) 175 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 176 } 177 178 void ath6kl_cookie_cleanup(struct ath6kl *ar) 179 { 180 ar->cookie_list = NULL; 181 ar->cookie_count = 0; 182 } 183 184 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 185 { 186 /* Insert first */ 187 188 if (!ar || !cookie) 189 return; 190 191 cookie->arc_list_next = ar->cookie_list; 192 ar->cookie_list = cookie; 193 ar->cookie_count++; 194 } 195 196 /* 197 * Read from the hardware through its diagnostic window. No cooperation 198 * from the firmware is required for this. 199 */ 200 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 201 { 202 int ret; 203 204 ret = ath6kl_hif_diag_read32(ar, address, value); 205 if (ret) { 206 ath6kl_warn("failed to read32 through diagnose window: %d\n", 207 ret); 208 return ret; 209 } 210 211 return 0; 212 } 213 214 /* 215 * Write to the ATH6KL through its diagnostic window. No cooperation from 216 * the Target is required for this. 217 */ 218 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 219 { 220 int ret; 221 222 ret = ath6kl_hif_diag_write32(ar, address, value); 223 224 if (ret) { 225 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 226 address, value); 227 return ret; 228 } 229 230 return 0; 231 } 232 233 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 234 { 235 u32 count, *buf = data; 236 int ret; 237 238 if (WARN_ON(length % 4)) 239 return -EINVAL; 240 241 for (count = 0; count < length / 4; count++, address += 4) { 242 ret = ath6kl_diag_read32(ar, address, &buf[count]); 243 if (ret) 244 return ret; 245 } 246 247 return 0; 248 } 249 250 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 251 { 252 u32 count; 253 __le32 *buf = data; 254 int ret; 255 256 if (WARN_ON(length % 4)) 257 return -EINVAL; 258 259 for (count = 0; count < length / 4; count++, address += 4) { 260 ret = ath6kl_diag_write32(ar, address, buf[count]); 261 if (ret) 262 return ret; 263 } 264 265 return 0; 266 } 267 268 int ath6kl_read_fwlogs(struct ath6kl *ar) 269 { 270 struct ath6kl_dbglog_hdr debug_hdr; 271 struct ath6kl_dbglog_buf debug_buf; 272 u32 address, length, dropped, firstbuf, debug_hdr_addr; 273 int ret, loop; 274 u8 *buf; 275 276 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 277 if (!buf) 278 return -ENOMEM; 279 280 address = TARG_VTOP(ar->target_type, 281 ath6kl_get_hi_item_addr(ar, 282 HI_ITEM(hi_dbglog_hdr))); 283 284 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 285 if (ret) 286 goto out; 287 288 /* Get the contents of the ring buffer */ 289 if (debug_hdr_addr == 0) { 290 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 291 ret = -EINVAL; 292 goto out; 293 } 294 295 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 296 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 297 298 address = TARG_VTOP(ar->target_type, 299 le32_to_cpu(debug_hdr.dbuf_addr)); 300 firstbuf = address; 301 dropped = le32_to_cpu(debug_hdr.dropped); 302 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 303 304 loop = 100; 305 306 do { 307 address = TARG_VTOP(ar->target_type, 308 le32_to_cpu(debug_buf.buffer_addr)); 309 length = le32_to_cpu(debug_buf.length); 310 311 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 312 le32_to_cpu(debug_buf.bufsize))) { 313 length = ALIGN(length, 4); 314 315 ret = ath6kl_diag_read(ar, address, 316 buf, length); 317 if (ret) 318 goto out; 319 320 ath6kl_debug_fwlog_event(ar, buf, length); 321 } 322 323 address = TARG_VTOP(ar->target_type, 324 le32_to_cpu(debug_buf.next)); 325 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 326 if (ret) 327 goto out; 328 329 loop--; 330 331 if (WARN_ON(loop == 0)) { 332 ret = -ETIMEDOUT; 333 goto out; 334 } 335 } while (address != firstbuf); 336 337 out: 338 kfree(buf); 339 340 return ret; 341 } 342 343 /* FIXME: move to a better place, target.h? */ 344 #define AR6003_RESET_CONTROL_ADDRESS 0x00004000 345 #define AR6004_RESET_CONTROL_ADDRESS 0x00004000 346 347 void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 348 bool wait_fot_compltn, bool cold_reset) 349 { 350 int status = 0; 351 u32 address; 352 __le32 data; 353 354 if (target_type != TARGET_TYPE_AR6003 && 355 target_type != TARGET_TYPE_AR6004) 356 return; 357 358 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 359 cpu_to_le32(RESET_CONTROL_MBOX_RST); 360 361 switch (target_type) { 362 case TARGET_TYPE_AR6003: 363 address = AR6003_RESET_CONTROL_ADDRESS; 364 break; 365 case TARGET_TYPE_AR6004: 366 address = AR6004_RESET_CONTROL_ADDRESS; 367 break; 368 } 369 370 status = ath6kl_diag_write32(ar, address, data); 371 372 if (status) 373 ath6kl_err("failed to reset target\n"); 374 } 375 376 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 377 { 378 u8 index; 379 u8 keyusage; 380 381 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 382 if (vif->wep_key_list[index].key_len) { 383 keyusage = GROUP_USAGE; 384 if (index == vif->def_txkey_index) 385 keyusage |= TX_USAGE; 386 387 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 388 index, 389 WEP_CRYPT, 390 keyusage, 391 vif->wep_key_list[index].key_len, 392 NULL, 0, 393 vif->wep_key_list[index].key, 394 KEY_OP_INIT_VAL, NULL, 395 NO_SYNC_WMIFLAG); 396 } 397 } 398 } 399 400 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 401 { 402 struct ath6kl *ar = vif->ar; 403 struct ath6kl_req_key *ik; 404 int res; 405 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 406 407 ik = &ar->ap_mode_bkey; 408 409 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 410 411 switch (vif->auth_mode) { 412 case NONE_AUTH: 413 if (vif->prwise_crypto == WEP_CRYPT) 414 ath6kl_install_static_wep_keys(vif); 415 if (!ik->valid || ik->key_type != WAPI_CRYPT) 416 break; 417 /* for WAPI, we need to set the delayed group key, continue: */ 418 case WPA_PSK_AUTH: 419 case WPA2_PSK_AUTH: 420 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 421 if (!ik->valid) 422 break; 423 424 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 425 "the initial group key for AP mode\n"); 426 memset(key_rsc, 0, sizeof(key_rsc)); 427 res = ath6kl_wmi_addkey_cmd( 428 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 429 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 430 ik->key, 431 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 432 if (res) { 433 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 434 "addkey failed: %d\n", res); 435 } 436 break; 437 } 438 439 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 440 set_bit(CONNECTED, &vif->flags); 441 netif_carrier_on(vif->ndev); 442 } 443 444 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 445 u8 keymgmt, u8 ucipher, u8 auth, 446 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 447 { 448 u8 *ies = NULL, *wpa_ie = NULL, *pos; 449 size_t ies_len = 0; 450 struct station_info sinfo; 451 452 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 453 454 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 455 struct ieee80211_mgmt *mgmt = 456 (struct ieee80211_mgmt *) assoc_info; 457 if (ieee80211_is_assoc_req(mgmt->frame_control) && 458 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 459 sizeof(mgmt->u.assoc_req)) { 460 ies = mgmt->u.assoc_req.variable; 461 ies_len = assoc_info + assoc_req_len - ies; 462 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 463 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 464 + sizeof(mgmt->u.reassoc_req)) { 465 ies = mgmt->u.reassoc_req.variable; 466 ies_len = assoc_info + assoc_req_len - ies; 467 } 468 } 469 470 pos = ies; 471 while (pos && pos + 1 < ies + ies_len) { 472 if (pos + 2 + pos[1] > ies + ies_len) 473 break; 474 if (pos[0] == WLAN_EID_RSN) 475 wpa_ie = pos; /* RSN IE */ 476 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 477 pos[1] >= 4 && 478 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 479 if (pos[5] == 0x01) 480 wpa_ie = pos; /* WPA IE */ 481 else if (pos[5] == 0x04) { 482 wpa_ie = pos; /* WPS IE */ 483 break; /* overrides WPA/RSN IE */ 484 } 485 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 486 /* 487 * Note: WAPI Parameter Set IE re-uses Element ID that 488 * was officially allocated for BSS AC Access Delay. As 489 * such, we need to be a bit more careful on when 490 * parsing the frame. However, BSS AC Access Delay 491 * element is not supposed to be included in 492 * (Re)Association Request frames, so this should not 493 * cause problems. 494 */ 495 wpa_ie = pos; /* WAPI IE */ 496 break; 497 } 498 pos += 2 + pos[1]; 499 } 500 501 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 502 wpa_ie ? 2 + wpa_ie[1] : 0, 503 keymgmt, ucipher, auth, apsd_info); 504 505 /* send event to application */ 506 memset(&sinfo, 0, sizeof(sinfo)); 507 508 /* TODO: sinfo.generation */ 509 510 sinfo.assoc_req_ies = ies; 511 sinfo.assoc_req_ies_len = ies_len; 512 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 513 514 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 515 516 netif_wake_queue(vif->ndev); 517 } 518 519 void disconnect_timer_handler(unsigned long ptr) 520 { 521 struct net_device *dev = (struct net_device *)ptr; 522 struct ath6kl_vif *vif = netdev_priv(dev); 523 524 ath6kl_init_profile_info(vif); 525 ath6kl_disconnect(vif); 526 } 527 528 void ath6kl_disconnect(struct ath6kl_vif *vif) 529 { 530 if (test_bit(CONNECTED, &vif->flags) || 531 test_bit(CONNECT_PEND, &vif->flags)) { 532 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 533 /* 534 * Disconnect command is issued, clear the connect pending 535 * flag. The connected flag will be cleared in 536 * disconnect event notification. 537 */ 538 clear_bit(CONNECT_PEND, &vif->flags); 539 } 540 } 541 542 /* WMI Event handlers */ 543 544 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 545 { 546 struct ath6kl *ar = devt; 547 548 memcpy(ar->mac_addr, datap, ETH_ALEN); 549 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 550 __func__, ar->mac_addr); 551 552 ar->version.wlan_ver = sw_ver; 553 ar->version.abi_ver = abi_ver; 554 555 snprintf(ar->wiphy->fw_version, 556 sizeof(ar->wiphy->fw_version), 557 "%u.%u.%u.%u", 558 (ar->version.wlan_ver & 0xf0000000) >> 28, 559 (ar->version.wlan_ver & 0x0f000000) >> 24, 560 (ar->version.wlan_ver & 0x00ff0000) >> 16, 561 (ar->version.wlan_ver & 0x0000ffff)); 562 563 /* indicate to the waiting thread that the ready event was received */ 564 set_bit(WMI_READY, &ar->flag); 565 wake_up(&ar->event_wq); 566 } 567 568 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 569 { 570 struct ath6kl *ar = vif->ar; 571 bool aborted = false; 572 573 if (status != WMI_SCAN_STATUS_SUCCESS) 574 aborted = true; 575 576 ath6kl_cfg80211_scan_complete_event(vif, aborted); 577 578 if (!ar->usr_bss_filter) { 579 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 580 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 581 NONE_BSS_FILTER, 0); 582 } 583 584 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 585 } 586 587 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 588 u16 listen_int, u16 beacon_int, 589 enum network_type net_type, u8 beacon_ie_len, 590 u8 assoc_req_len, u8 assoc_resp_len, 591 u8 *assoc_info) 592 { 593 struct ath6kl *ar = vif->ar; 594 595 ath6kl_cfg80211_connect_event(vif, channel, bssid, 596 listen_int, beacon_int, 597 net_type, beacon_ie_len, 598 assoc_req_len, assoc_resp_len, 599 assoc_info); 600 601 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 602 vif->bss_ch = channel; 603 604 if ((vif->nw_type == INFRA_NETWORK)) 605 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 606 vif->listen_intvl_t, 0); 607 608 netif_wake_queue(vif->ndev); 609 610 /* Update connect & link status atomically */ 611 spin_lock_bh(&vif->if_lock); 612 set_bit(CONNECTED, &vif->flags); 613 clear_bit(CONNECT_PEND, &vif->flags); 614 netif_carrier_on(vif->ndev); 615 spin_unlock_bh(&vif->if_lock); 616 617 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 618 vif->reconnect_flag = 0; 619 620 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 621 memset(ar->node_map, 0, sizeof(ar->node_map)); 622 ar->node_num = 0; 623 ar->next_ep_id = ENDPOINT_2; 624 } 625 626 if (!ar->usr_bss_filter) { 627 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 628 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 629 CURRENT_BSS_FILTER, 0); 630 } 631 } 632 633 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 634 { 635 struct ath6kl_sta *sta; 636 struct ath6kl *ar = vif->ar; 637 u8 tsc[6]; 638 639 /* 640 * For AP case, keyid will have aid of STA which sent pkt with 641 * MIC error. Use this aid to get MAC & send it to hostapd. 642 */ 643 if (vif->nw_type == AP_NETWORK) { 644 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 645 if (!sta) 646 return; 647 648 ath6kl_dbg(ATH6KL_DBG_TRC, 649 "ap tkip mic error received from aid=%d\n", keyid); 650 651 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 652 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 653 NL80211_KEYTYPE_PAIRWISE, keyid, 654 tsc, GFP_KERNEL); 655 } else 656 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 657 658 } 659 660 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 661 { 662 struct wmi_target_stats *tgt_stats = 663 (struct wmi_target_stats *) ptr; 664 struct ath6kl *ar = vif->ar; 665 struct target_stats *stats = &vif->target_stats; 666 struct tkip_ccmp_stats *ccmp_stats; 667 u8 ac; 668 669 if (len < sizeof(*tgt_stats)) 670 return; 671 672 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 673 674 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 675 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 676 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 677 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 678 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 679 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 680 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 681 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 682 stats->tx_rts_success_cnt += 683 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 684 685 for (ac = 0; ac < WMM_NUM_AC; ac++) 686 stats->tx_pkt_per_ac[ac] += 687 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 688 689 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 690 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 691 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 692 stats->tx_mult_retry_cnt += 693 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 694 stats->tx_rts_fail_cnt += 695 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 696 stats->tx_ucast_rate = 697 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 698 699 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 700 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 701 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 702 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 703 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 704 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 705 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 706 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 707 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 708 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 709 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 710 stats->rx_key_cache_miss += 711 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 712 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 713 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 714 stats->rx_ucast_rate = 715 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 716 717 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 718 719 stats->tkip_local_mic_fail += 720 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 721 stats->tkip_cnter_measures_invoked += 722 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 723 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 724 725 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 726 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 727 728 stats->pwr_save_fail_cnt += 729 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 730 stats->noise_floor_calib = 731 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 732 733 stats->cs_bmiss_cnt += 734 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 735 stats->cs_low_rssi_cnt += 736 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 737 stats->cs_connect_cnt += 738 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 739 stats->cs_discon_cnt += 740 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 741 742 stats->cs_ave_beacon_rssi = 743 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 744 745 stats->cs_last_roam_msec = 746 tgt_stats->cserv_stats.cs_last_roam_msec; 747 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 748 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 749 750 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 751 752 stats->wow_pkt_dropped += 753 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 754 stats->wow_host_pkt_wakeups += 755 tgt_stats->wow_stats.wow_host_pkt_wakeups; 756 stats->wow_host_evt_wakeups += 757 tgt_stats->wow_stats.wow_host_evt_wakeups; 758 stats->wow_evt_discarded += 759 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 760 761 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 762 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 763 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 764 765 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 766 clear_bit(STATS_UPDATE_PEND, &vif->flags); 767 wake_up(&ar->event_wq); 768 } 769 } 770 771 static void ath6kl_add_le32(__le32 *var, __le32 val) 772 { 773 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 774 } 775 776 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 777 { 778 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 779 struct ath6kl *ar = vif->ar; 780 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 781 struct wmi_per_sta_stat *st_ap, *st_p; 782 u8 ac; 783 784 if (vif->nw_type == AP_NETWORK) { 785 if (len < sizeof(*p)) 786 return; 787 788 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 789 st_ap = &ap->sta[ac]; 790 st_p = &p->sta[ac]; 791 792 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 793 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 794 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 795 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 796 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 797 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 798 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 799 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 800 } 801 802 } else { 803 ath6kl_update_target_stats(vif, ptr, len); 804 } 805 } 806 807 void ath6kl_wakeup_event(void *dev) 808 { 809 struct ath6kl *ar = (struct ath6kl *) dev; 810 811 wake_up(&ar->event_wq); 812 } 813 814 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 815 { 816 struct ath6kl *ar = (struct ath6kl *) devt; 817 818 ar->tx_pwr = tx_pwr; 819 wake_up(&ar->event_wq); 820 } 821 822 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 823 { 824 struct ath6kl_sta *conn; 825 struct sk_buff *skb; 826 bool psq_empty = false; 827 struct ath6kl *ar = vif->ar; 828 struct ath6kl_mgmt_buff *mgmt_buf; 829 830 conn = ath6kl_find_sta_by_aid(ar, aid); 831 832 if (!conn) 833 return; 834 /* 835 * Send out a packet queued on ps queue. When the ps queue 836 * becomes empty update the PVB for this station. 837 */ 838 spin_lock_bh(&conn->psq_lock); 839 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 840 spin_unlock_bh(&conn->psq_lock); 841 842 if (psq_empty) 843 /* TODO: Send out a NULL data frame */ 844 return; 845 846 spin_lock_bh(&conn->psq_lock); 847 if (conn->mgmt_psq_len > 0) { 848 mgmt_buf = list_first_entry(&conn->mgmt_psq, 849 struct ath6kl_mgmt_buff, list); 850 list_del(&mgmt_buf->list); 851 conn->mgmt_psq_len--; 852 spin_unlock_bh(&conn->psq_lock); 853 854 conn->sta_flags |= STA_PS_POLLED; 855 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 856 mgmt_buf->id, mgmt_buf->freq, 857 mgmt_buf->wait, mgmt_buf->buf, 858 mgmt_buf->len, mgmt_buf->no_cck); 859 conn->sta_flags &= ~STA_PS_POLLED; 860 kfree(mgmt_buf); 861 } else { 862 skb = skb_dequeue(&conn->psq); 863 spin_unlock_bh(&conn->psq_lock); 864 865 conn->sta_flags |= STA_PS_POLLED; 866 ath6kl_data_tx(skb, vif->ndev); 867 conn->sta_flags &= ~STA_PS_POLLED; 868 } 869 870 spin_lock_bh(&conn->psq_lock); 871 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 872 spin_unlock_bh(&conn->psq_lock); 873 874 if (psq_empty) 875 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 876 } 877 878 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 879 { 880 bool mcastq_empty = false; 881 struct sk_buff *skb; 882 struct ath6kl *ar = vif->ar; 883 884 /* 885 * If there are no associated STAs, ignore the DTIM expiry event. 886 * There can be potential race conditions where the last associated 887 * STA may disconnect & before the host could clear the 'Indicate 888 * DTIM' request to the firmware, the firmware would have just 889 * indicated a DTIM expiry event. The race is between 'clear DTIM 890 * expiry cmd' going from the host to the firmware & the DTIM 891 * expiry event happening from the firmware to the host. 892 */ 893 if (!ar->sta_list_index) 894 return; 895 896 spin_lock_bh(&ar->mcastpsq_lock); 897 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 898 spin_unlock_bh(&ar->mcastpsq_lock); 899 900 if (mcastq_empty) 901 return; 902 903 /* set the STA flag to dtim_expired for the frame to go out */ 904 set_bit(DTIM_EXPIRED, &vif->flags); 905 906 spin_lock_bh(&ar->mcastpsq_lock); 907 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 908 spin_unlock_bh(&ar->mcastpsq_lock); 909 910 ath6kl_data_tx(skb, vif->ndev); 911 912 spin_lock_bh(&ar->mcastpsq_lock); 913 } 914 spin_unlock_bh(&ar->mcastpsq_lock); 915 916 clear_bit(DTIM_EXPIRED, &vif->flags); 917 918 /* clear the LSB of the BitMapCtl field of the TIM IE */ 919 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 920 } 921 922 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 923 u8 assoc_resp_len, u8 *assoc_info, 924 u16 prot_reason_status) 925 { 926 struct ath6kl *ar = vif->ar; 927 928 if (vif->nw_type == AP_NETWORK) { 929 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 930 return; 931 932 /* if no more associated STAs, empty the mcast PS q */ 933 if (ar->sta_list_index == 0) { 934 spin_lock_bh(&ar->mcastpsq_lock); 935 skb_queue_purge(&ar->mcastpsq); 936 spin_unlock_bh(&ar->mcastpsq_lock); 937 938 /* clear the LSB of the TIM IE's BitMapCtl field */ 939 if (test_bit(WMI_READY, &ar->flag)) 940 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 941 MCAST_AID, 0); 942 } 943 944 if (!is_broadcast_ether_addr(bssid)) { 945 /* send event to application */ 946 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 947 } 948 949 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 950 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 951 clear_bit(CONNECTED, &vif->flags); 952 } 953 return; 954 } 955 956 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 957 assoc_resp_len, assoc_info, 958 prot_reason_status); 959 960 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 961 962 del_timer(&vif->disconnect_timer); 963 964 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 965 966 /* 967 * If the event is due to disconnect cmd from the host, only they 968 * the target would stop trying to connect. Under any other 969 * condition, target would keep trying to connect. 970 */ 971 if (reason == DISCONNECT_CMD) { 972 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 973 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 974 NONE_BSS_FILTER, 0); 975 } else { 976 set_bit(CONNECT_PEND, &vif->flags); 977 if (((reason == ASSOC_FAILED) && 978 (prot_reason_status == 0x11)) || 979 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 980 (vif->reconnect_flag == 1))) { 981 set_bit(CONNECTED, &vif->flags); 982 return; 983 } 984 } 985 986 /* update connect & link status atomically */ 987 spin_lock_bh(&vif->if_lock); 988 clear_bit(CONNECTED, &vif->flags); 989 netif_carrier_off(vif->ndev); 990 spin_unlock_bh(&vif->if_lock); 991 992 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 993 vif->reconnect_flag = 0; 994 995 if (reason != CSERV_DISCONNECT) 996 ar->user_key_ctrl = 0; 997 998 netif_stop_queue(vif->ndev); 999 memset(vif->bssid, 0, sizeof(vif->bssid)); 1000 vif->bss_ch = 0; 1001 1002 ath6kl_tx_data_cleanup(ar); 1003 } 1004 1005 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1006 { 1007 struct ath6kl_vif *vif; 1008 1009 spin_lock_bh(&ar->list_lock); 1010 if (list_empty(&ar->vif_list)) { 1011 spin_unlock_bh(&ar->list_lock); 1012 return NULL; 1013 } 1014 1015 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1016 1017 spin_unlock_bh(&ar->list_lock); 1018 1019 return vif; 1020 } 1021 1022 static int ath6kl_open(struct net_device *dev) 1023 { 1024 struct ath6kl_vif *vif = netdev_priv(dev); 1025 1026 set_bit(WLAN_ENABLED, &vif->flags); 1027 1028 if (test_bit(CONNECTED, &vif->flags)) { 1029 netif_carrier_on(dev); 1030 netif_wake_queue(dev); 1031 } else 1032 netif_carrier_off(dev); 1033 1034 return 0; 1035 } 1036 1037 static int ath6kl_close(struct net_device *dev) 1038 { 1039 struct ath6kl_vif *vif = netdev_priv(dev); 1040 1041 netif_stop_queue(dev); 1042 1043 ath6kl_cfg80211_stop(vif); 1044 1045 clear_bit(WLAN_ENABLED, &vif->flags); 1046 1047 return 0; 1048 } 1049 1050 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1051 { 1052 struct ath6kl_vif *vif = netdev_priv(dev); 1053 1054 return &vif->net_stats; 1055 } 1056 1057 static int ath6kl_set_features(struct net_device *dev, 1058 netdev_features_t features) 1059 { 1060 struct ath6kl_vif *vif = netdev_priv(dev); 1061 struct ath6kl *ar = vif->ar; 1062 int err = 0; 1063 1064 if ((features & NETIF_F_RXCSUM) && 1065 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1066 ar->rx_meta_ver = WMI_META_VERSION_2; 1067 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1068 vif->fw_vif_idx, 1069 ar->rx_meta_ver, 0, 0); 1070 if (err) { 1071 dev->features = features & ~NETIF_F_RXCSUM; 1072 return err; 1073 } 1074 } else if (!(features & NETIF_F_RXCSUM) && 1075 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1076 ar->rx_meta_ver = 0; 1077 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1078 vif->fw_vif_idx, 1079 ar->rx_meta_ver, 0, 0); 1080 if (err) { 1081 dev->features = features | NETIF_F_RXCSUM; 1082 return err; 1083 } 1084 1085 } 1086 1087 return err; 1088 } 1089 1090 static void ath6kl_set_multicast_list(struct net_device *ndev) 1091 { 1092 struct ath6kl_vif *vif = netdev_priv(ndev); 1093 bool mc_all_on = false, mc_all_off = false; 1094 int mc_count = netdev_mc_count(ndev); 1095 struct netdev_hw_addr *ha; 1096 bool found; 1097 struct ath6kl_mc_filter *mc_filter, *tmp; 1098 struct list_head mc_filter_new; 1099 int ret; 1100 1101 if (!test_bit(WMI_READY, &vif->ar->flag) || 1102 !test_bit(WLAN_ENABLED, &vif->flags)) 1103 return; 1104 1105 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1106 !!(ndev->flags & IFF_ALLMULTI) || 1107 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1108 1109 mc_all_off = !(ndev->flags & IFF_MULTICAST) || mc_count == 0; 1110 1111 if (mc_all_on || mc_all_off) { 1112 /* Enable/disable all multicast */ 1113 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast filter\n", 1114 mc_all_on ? "enabling" : "disabling"); 1115 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1116 mc_all_on); 1117 if (ret) 1118 ath6kl_warn("Failed to %s multicast receive\n", 1119 mc_all_on ? "enable" : "disable"); 1120 return; 1121 } 1122 1123 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1124 found = false; 1125 netdev_for_each_mc_addr(ha, ndev) { 1126 if (memcmp(ha->addr, mc_filter->hw_addr, 1127 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1128 found = true; 1129 break; 1130 } 1131 } 1132 1133 if (!found) { 1134 /* 1135 * Delete the filter which was previously set 1136 * but not in the new request. 1137 */ 1138 ath6kl_dbg(ATH6KL_DBG_TRC, 1139 "Removing %pM from multicast filter\n", 1140 mc_filter->hw_addr); 1141 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1142 vif->fw_vif_idx, mc_filter->hw_addr, 1143 false); 1144 if (ret) { 1145 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1146 mc_filter->hw_addr); 1147 return; 1148 } 1149 1150 list_del(&mc_filter->list); 1151 kfree(mc_filter); 1152 } 1153 } 1154 1155 INIT_LIST_HEAD(&mc_filter_new); 1156 1157 netdev_for_each_mc_addr(ha, ndev) { 1158 found = false; 1159 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1160 if (memcmp(ha->addr, mc_filter->hw_addr, 1161 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1162 found = true; 1163 break; 1164 } 1165 } 1166 1167 if (!found) { 1168 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1169 GFP_ATOMIC); 1170 if (!mc_filter) { 1171 WARN_ON(1); 1172 goto out; 1173 } 1174 1175 memcpy(mc_filter->hw_addr, ha->addr, 1176 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1177 /* Set the multicast filter */ 1178 ath6kl_dbg(ATH6KL_DBG_TRC, 1179 "Adding %pM to multicast filter list\n", 1180 mc_filter->hw_addr); 1181 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1182 vif->fw_vif_idx, mc_filter->hw_addr, 1183 true); 1184 if (ret) { 1185 ath6kl_warn("Failed to add multicast filter :%pM\n", 1186 mc_filter->hw_addr); 1187 kfree(mc_filter); 1188 goto out; 1189 } 1190 1191 list_add_tail(&mc_filter->list, &mc_filter_new); 1192 } 1193 } 1194 1195 out: 1196 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1197 } 1198 1199 static const struct net_device_ops ath6kl_netdev_ops = { 1200 .ndo_open = ath6kl_open, 1201 .ndo_stop = ath6kl_close, 1202 .ndo_start_xmit = ath6kl_data_tx, 1203 .ndo_get_stats = ath6kl_get_stats, 1204 .ndo_set_features = ath6kl_set_features, 1205 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1206 }; 1207 1208 void init_netdev(struct net_device *dev) 1209 { 1210 dev->netdev_ops = &ath6kl_netdev_ops; 1211 dev->destructor = free_netdev; 1212 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1213 1214 dev->needed_headroom = ETH_HLEN; 1215 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1216 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1217 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1218 1219 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1220 1221 return; 1222 } 1223