main.c revision 6251d8012dbc49869f2453942089c4df82de0c80
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 26struct 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 44struct 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 58static 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 83static 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 114static 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 146enum 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 152struct 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 165void 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 178void ath6kl_cookie_cleanup(struct ath6kl *ar) 179{ 180 ar->cookie_list = NULL; 181 ar->cookie_count = 0; 182} 183 184void 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 */ 200int 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 */ 218int 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 233int 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 250int 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 268int 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 337out: 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 347void 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 376static 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 400void 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, 425 "Delayed addkey for 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, 434 "Delayed addkey failed: %d\n", res); 435 } 436 break; 437 } 438 439 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) { 440 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx); 441 /* we actually don't know the phymode, default to HT20 */ 442 ath6kl_cfg80211_ch_switch_notify(vif, channel, 443 WMI_11G_HT20); 444 } 445 446 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 447 set_bit(CONNECTED, &vif->flags); 448 netif_carrier_on(vif->ndev); 449} 450 451void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 452 u8 keymgmt, u8 ucipher, u8 auth, 453 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 454{ 455 u8 *ies = NULL, *wpa_ie = NULL, *pos; 456 size_t ies_len = 0; 457 struct station_info sinfo; 458 459 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 460 461 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 462 struct ieee80211_mgmt *mgmt = 463 (struct ieee80211_mgmt *) assoc_info; 464 if (ieee80211_is_assoc_req(mgmt->frame_control) && 465 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 466 sizeof(mgmt->u.assoc_req)) { 467 ies = mgmt->u.assoc_req.variable; 468 ies_len = assoc_info + assoc_req_len - ies; 469 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 470 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 471 + sizeof(mgmt->u.reassoc_req)) { 472 ies = mgmt->u.reassoc_req.variable; 473 ies_len = assoc_info + assoc_req_len - ies; 474 } 475 } 476 477 pos = ies; 478 while (pos && pos + 1 < ies + ies_len) { 479 if (pos + 2 + pos[1] > ies + ies_len) 480 break; 481 if (pos[0] == WLAN_EID_RSN) 482 wpa_ie = pos; /* RSN IE */ 483 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 484 pos[1] >= 4 && 485 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 486 if (pos[5] == 0x01) 487 wpa_ie = pos; /* WPA IE */ 488 else if (pos[5] == 0x04) { 489 wpa_ie = pos; /* WPS IE */ 490 break; /* overrides WPA/RSN IE */ 491 } 492 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 493 /* 494 * Note: WAPI Parameter Set IE re-uses Element ID that 495 * was officially allocated for BSS AC Access Delay. As 496 * such, we need to be a bit more careful on when 497 * parsing the frame. However, BSS AC Access Delay 498 * element is not supposed to be included in 499 * (Re)Association Request frames, so this should not 500 * cause problems. 501 */ 502 wpa_ie = pos; /* WAPI IE */ 503 break; 504 } 505 pos += 2 + pos[1]; 506 } 507 508 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 509 wpa_ie ? 2 + wpa_ie[1] : 0, 510 keymgmt, ucipher, auth, apsd_info); 511 512 /* send event to application */ 513 memset(&sinfo, 0, sizeof(sinfo)); 514 515 /* TODO: sinfo.generation */ 516 517 sinfo.assoc_req_ies = ies; 518 sinfo.assoc_req_ies_len = ies_len; 519 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 520 521 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 522 523 netif_wake_queue(vif->ndev); 524} 525 526void disconnect_timer_handler(unsigned long ptr) 527{ 528 struct net_device *dev = (struct net_device *)ptr; 529 struct ath6kl_vif *vif = netdev_priv(dev); 530 531 ath6kl_init_profile_info(vif); 532 ath6kl_disconnect(vif); 533} 534 535void ath6kl_disconnect(struct ath6kl_vif *vif) 536{ 537 if (test_bit(CONNECTED, &vif->flags) || 538 test_bit(CONNECT_PEND, &vif->flags)) { 539 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 540 /* 541 * Disconnect command is issued, clear the connect pending 542 * flag. The connected flag will be cleared in 543 * disconnect event notification. 544 */ 545 clear_bit(CONNECT_PEND, &vif->flags); 546 } 547} 548 549/* WMI Event handlers */ 550 551void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver, 552 enum wmi_phy_cap cap) 553{ 554 struct ath6kl *ar = devt; 555 556 memcpy(ar->mac_addr, datap, ETH_ALEN); 557 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 558 __func__, ar->mac_addr); 559 560 ar->version.wlan_ver = sw_ver; 561 ar->version.abi_ver = abi_ver; 562 ar->hw.cap = cap; 563 564 snprintf(ar->wiphy->fw_version, 565 sizeof(ar->wiphy->fw_version), 566 "%u.%u.%u.%u", 567 (ar->version.wlan_ver & 0xf0000000) >> 28, 568 (ar->version.wlan_ver & 0x0f000000) >> 24, 569 (ar->version.wlan_ver & 0x00ff0000) >> 16, 570 (ar->version.wlan_ver & 0x0000ffff)); 571 572 /* indicate to the waiting thread that the ready event was received */ 573 set_bit(WMI_READY, &ar->flag); 574 wake_up(&ar->event_wq); 575} 576 577void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 578{ 579 struct ath6kl *ar = vif->ar; 580 bool aborted = false; 581 582 if (status != WMI_SCAN_STATUS_SUCCESS) 583 aborted = true; 584 585 ath6kl_cfg80211_scan_complete_event(vif, aborted); 586 587 if (!ar->usr_bss_filter) { 588 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 589 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 590 NONE_BSS_FILTER, 0); 591 } 592 593 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 594} 595 596static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel) 597{ 598 599 struct ath6kl *ar = vif->ar; 600 601 vif->next_chan = channel; 602 vif->profile.ch = cpu_to_le16(channel); 603 604 switch (vif->nw_type) { 605 case AP_NETWORK: 606 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, 607 &vif->profile); 608 default: 609 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type); 610 return -ENOTSUPP; 611 } 612} 613 614static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel) 615{ 616 617 struct ath6kl_vif *vif; 618 int res = 0; 619 620 if (!ar->want_ch_switch) 621 return; 622 623 spin_lock_bh(&ar->list_lock); 624 list_for_each_entry(vif, &ar->vif_list, list) { 625 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) 626 res = ath6kl_commit_ch_switch(vif, channel); 627 628 if (res) 629 ath6kl_err("channel switch failed nw_type %d res %d\n", 630 vif->nw_type, res); 631 } 632 spin_unlock_bh(&ar->list_lock); 633} 634 635void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 636 u16 listen_int, u16 beacon_int, 637 enum network_type net_type, u8 beacon_ie_len, 638 u8 assoc_req_len, u8 assoc_resp_len, 639 u8 *assoc_info) 640{ 641 struct ath6kl *ar = vif->ar; 642 643 ath6kl_cfg80211_connect_event(vif, channel, bssid, 644 listen_int, beacon_int, 645 net_type, beacon_ie_len, 646 assoc_req_len, assoc_resp_len, 647 assoc_info); 648 649 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 650 vif->bss_ch = channel; 651 652 if ((vif->nw_type == INFRA_NETWORK)) { 653 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 654 vif->listen_intvl_t, 0); 655 ath6kl_check_ch_switch(ar, channel); 656 } 657 658 netif_wake_queue(vif->ndev); 659 660 /* Update connect & link status atomically */ 661 spin_lock_bh(&vif->if_lock); 662 set_bit(CONNECTED, &vif->flags); 663 clear_bit(CONNECT_PEND, &vif->flags); 664 netif_carrier_on(vif->ndev); 665 spin_unlock_bh(&vif->if_lock); 666 667 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 668 vif->reconnect_flag = 0; 669 670 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 671 memset(ar->node_map, 0, sizeof(ar->node_map)); 672 ar->node_num = 0; 673 ar->next_ep_id = ENDPOINT_2; 674 } 675 676 if (!ar->usr_bss_filter) { 677 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 678 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 679 CURRENT_BSS_FILTER, 0); 680 } 681} 682 683void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 684{ 685 struct ath6kl_sta *sta; 686 struct ath6kl *ar = vif->ar; 687 u8 tsc[6]; 688 689 /* 690 * For AP case, keyid will have aid of STA which sent pkt with 691 * MIC error. Use this aid to get MAC & send it to hostapd. 692 */ 693 if (vif->nw_type == AP_NETWORK) { 694 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 695 if (!sta) 696 return; 697 698 ath6kl_dbg(ATH6KL_DBG_TRC, 699 "ap tkip mic error received from aid=%d\n", keyid); 700 701 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 702 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 703 NL80211_KEYTYPE_PAIRWISE, keyid, 704 tsc, GFP_KERNEL); 705 } else 706 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 707 708} 709 710static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 711{ 712 struct wmi_target_stats *tgt_stats = 713 (struct wmi_target_stats *) ptr; 714 struct ath6kl *ar = vif->ar; 715 struct target_stats *stats = &vif->target_stats; 716 struct tkip_ccmp_stats *ccmp_stats; 717 u8 ac; 718 719 if (len < sizeof(*tgt_stats)) 720 return; 721 722 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 723 724 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 725 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 726 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 727 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 728 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 729 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 730 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 731 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 732 stats->tx_rts_success_cnt += 733 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 734 735 for (ac = 0; ac < WMM_NUM_AC; ac++) 736 stats->tx_pkt_per_ac[ac] += 737 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 738 739 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 740 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 741 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 742 stats->tx_mult_retry_cnt += 743 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 744 stats->tx_rts_fail_cnt += 745 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 746 stats->tx_ucast_rate = 747 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 748 749 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 750 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 751 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 752 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 753 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 754 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 755 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 756 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 757 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 758 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 759 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 760 stats->rx_key_cache_miss += 761 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 762 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 763 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 764 stats->rx_ucast_rate = 765 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 766 767 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 768 769 stats->tkip_local_mic_fail += 770 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 771 stats->tkip_cnter_measures_invoked += 772 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 773 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 774 775 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 776 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 777 778 stats->pwr_save_fail_cnt += 779 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 780 stats->noise_floor_calib = 781 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 782 783 stats->cs_bmiss_cnt += 784 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 785 stats->cs_low_rssi_cnt += 786 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 787 stats->cs_connect_cnt += 788 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 789 stats->cs_discon_cnt += 790 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 791 792 stats->cs_ave_beacon_rssi = 793 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 794 795 stats->cs_last_roam_msec = 796 tgt_stats->cserv_stats.cs_last_roam_msec; 797 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 798 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 799 800 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 801 802 stats->wow_pkt_dropped += 803 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 804 stats->wow_host_pkt_wakeups += 805 tgt_stats->wow_stats.wow_host_pkt_wakeups; 806 stats->wow_host_evt_wakeups += 807 tgt_stats->wow_stats.wow_host_evt_wakeups; 808 stats->wow_evt_discarded += 809 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 810 811 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 812 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 813 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 814 815 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 816 clear_bit(STATS_UPDATE_PEND, &vif->flags); 817 wake_up(&ar->event_wq); 818 } 819} 820 821static void ath6kl_add_le32(__le32 *var, __le32 val) 822{ 823 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 824} 825 826void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 827{ 828 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 829 struct ath6kl *ar = vif->ar; 830 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 831 struct wmi_per_sta_stat *st_ap, *st_p; 832 u8 ac; 833 834 if (vif->nw_type == AP_NETWORK) { 835 if (len < sizeof(*p)) 836 return; 837 838 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 839 st_ap = &ap->sta[ac]; 840 st_p = &p->sta[ac]; 841 842 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 843 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 844 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 845 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 846 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 847 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 848 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 849 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 850 } 851 852 } else { 853 ath6kl_update_target_stats(vif, ptr, len); 854 } 855} 856 857void ath6kl_wakeup_event(void *dev) 858{ 859 struct ath6kl *ar = (struct ath6kl *) dev; 860 861 wake_up(&ar->event_wq); 862} 863 864void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 865{ 866 struct ath6kl *ar = (struct ath6kl *) devt; 867 868 ar->tx_pwr = tx_pwr; 869 wake_up(&ar->event_wq); 870} 871 872void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 873{ 874 struct ath6kl_sta *conn; 875 struct sk_buff *skb; 876 bool psq_empty = false; 877 struct ath6kl *ar = vif->ar; 878 struct ath6kl_mgmt_buff *mgmt_buf; 879 880 conn = ath6kl_find_sta_by_aid(ar, aid); 881 882 if (!conn) 883 return; 884 /* 885 * Send out a packet queued on ps queue. When the ps queue 886 * becomes empty update the PVB for this station. 887 */ 888 spin_lock_bh(&conn->psq_lock); 889 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 890 spin_unlock_bh(&conn->psq_lock); 891 892 if (psq_empty) 893 /* TODO: Send out a NULL data frame */ 894 return; 895 896 spin_lock_bh(&conn->psq_lock); 897 if (conn->mgmt_psq_len > 0) { 898 mgmt_buf = list_first_entry(&conn->mgmt_psq, 899 struct ath6kl_mgmt_buff, list); 900 list_del(&mgmt_buf->list); 901 conn->mgmt_psq_len--; 902 spin_unlock_bh(&conn->psq_lock); 903 904 conn->sta_flags |= STA_PS_POLLED; 905 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 906 mgmt_buf->id, mgmt_buf->freq, 907 mgmt_buf->wait, mgmt_buf->buf, 908 mgmt_buf->len, mgmt_buf->no_cck); 909 conn->sta_flags &= ~STA_PS_POLLED; 910 kfree(mgmt_buf); 911 } else { 912 skb = skb_dequeue(&conn->psq); 913 spin_unlock_bh(&conn->psq_lock); 914 915 conn->sta_flags |= STA_PS_POLLED; 916 ath6kl_data_tx(skb, vif->ndev); 917 conn->sta_flags &= ~STA_PS_POLLED; 918 } 919 920 spin_lock_bh(&conn->psq_lock); 921 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 922 spin_unlock_bh(&conn->psq_lock); 923 924 if (psq_empty) 925 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 926} 927 928void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 929{ 930 bool mcastq_empty = false; 931 struct sk_buff *skb; 932 struct ath6kl *ar = vif->ar; 933 934 /* 935 * If there are no associated STAs, ignore the DTIM expiry event. 936 * There can be potential race conditions where the last associated 937 * STA may disconnect & before the host could clear the 'Indicate 938 * DTIM' request to the firmware, the firmware would have just 939 * indicated a DTIM expiry event. The race is between 'clear DTIM 940 * expiry cmd' going from the host to the firmware & the DTIM 941 * expiry event happening from the firmware to the host. 942 */ 943 if (!ar->sta_list_index) 944 return; 945 946 spin_lock_bh(&ar->mcastpsq_lock); 947 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 948 spin_unlock_bh(&ar->mcastpsq_lock); 949 950 if (mcastq_empty) 951 return; 952 953 /* set the STA flag to dtim_expired for the frame to go out */ 954 set_bit(DTIM_EXPIRED, &vif->flags); 955 956 spin_lock_bh(&ar->mcastpsq_lock); 957 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 958 spin_unlock_bh(&ar->mcastpsq_lock); 959 960 ath6kl_data_tx(skb, vif->ndev); 961 962 spin_lock_bh(&ar->mcastpsq_lock); 963 } 964 spin_unlock_bh(&ar->mcastpsq_lock); 965 966 clear_bit(DTIM_EXPIRED, &vif->flags); 967 968 /* clear the LSB of the BitMapCtl field of the TIM IE */ 969 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 970} 971 972void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 973 u8 assoc_resp_len, u8 *assoc_info, 974 u16 prot_reason_status) 975{ 976 struct ath6kl *ar = vif->ar; 977 978 if (vif->nw_type == AP_NETWORK) { 979 /* disconnect due to other STA vif switching channels */ 980 if (reason == BSS_DISCONNECTED && 981 prot_reason_status == WMI_AP_REASON_STA_ROAM) 982 ar->want_ch_switch |= 1 << vif->fw_vif_idx; 983 984 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 985 return; 986 987 /* if no more associated STAs, empty the mcast PS q */ 988 if (ar->sta_list_index == 0) { 989 spin_lock_bh(&ar->mcastpsq_lock); 990 skb_queue_purge(&ar->mcastpsq); 991 spin_unlock_bh(&ar->mcastpsq_lock); 992 993 /* clear the LSB of the TIM IE's BitMapCtl field */ 994 if (test_bit(WMI_READY, &ar->flag)) 995 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 996 MCAST_AID, 0); 997 } 998 999 if (!is_broadcast_ether_addr(bssid)) { 1000 /* send event to application */ 1001 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1002 } 1003 1004 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1005 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1006 clear_bit(CONNECTED, &vif->flags); 1007 } 1008 return; 1009 } 1010 1011 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1012 assoc_resp_len, assoc_info, 1013 prot_reason_status); 1014 1015 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 1016 1017 del_timer(&vif->disconnect_timer); 1018 1019 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1020 1021 /* 1022 * If the event is due to disconnect cmd from the host, only they 1023 * the target would stop trying to connect. Under any other 1024 * condition, target would keep trying to connect. 1025 */ 1026 if (reason == DISCONNECT_CMD) { 1027 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1028 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1029 NONE_BSS_FILTER, 0); 1030 } else { 1031 set_bit(CONNECT_PEND, &vif->flags); 1032 if (((reason == ASSOC_FAILED) && 1033 (prot_reason_status == 0x11)) || 1034 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 1035 (vif->reconnect_flag == 1))) { 1036 set_bit(CONNECTED, &vif->flags); 1037 return; 1038 } 1039 } 1040 1041 /* update connect & link status atomically */ 1042 spin_lock_bh(&vif->if_lock); 1043 clear_bit(CONNECTED, &vif->flags); 1044 netif_carrier_off(vif->ndev); 1045 spin_unlock_bh(&vif->if_lock); 1046 1047 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1048 vif->reconnect_flag = 0; 1049 1050 if (reason != CSERV_DISCONNECT) 1051 ar->user_key_ctrl = 0; 1052 1053 netif_stop_queue(vif->ndev); 1054 memset(vif->bssid, 0, sizeof(vif->bssid)); 1055 vif->bss_ch = 0; 1056 1057 ath6kl_tx_data_cleanup(ar); 1058} 1059 1060struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1061{ 1062 struct ath6kl_vif *vif; 1063 1064 spin_lock_bh(&ar->list_lock); 1065 if (list_empty(&ar->vif_list)) { 1066 spin_unlock_bh(&ar->list_lock); 1067 return NULL; 1068 } 1069 1070 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1071 1072 spin_unlock_bh(&ar->list_lock); 1073 1074 return vif; 1075} 1076 1077static int ath6kl_open(struct net_device *dev) 1078{ 1079 struct ath6kl_vif *vif = netdev_priv(dev); 1080 1081 set_bit(WLAN_ENABLED, &vif->flags); 1082 1083 if (test_bit(CONNECTED, &vif->flags)) { 1084 netif_carrier_on(dev); 1085 netif_wake_queue(dev); 1086 } else 1087 netif_carrier_off(dev); 1088 1089 return 0; 1090} 1091 1092static int ath6kl_close(struct net_device *dev) 1093{ 1094 struct ath6kl_vif *vif = netdev_priv(dev); 1095 1096 netif_stop_queue(dev); 1097 1098 ath6kl_cfg80211_stop(vif); 1099 1100 clear_bit(WLAN_ENABLED, &vif->flags); 1101 1102 return 0; 1103} 1104 1105static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1106{ 1107 struct ath6kl_vif *vif = netdev_priv(dev); 1108 1109 return &vif->net_stats; 1110} 1111 1112static int ath6kl_set_features(struct net_device *dev, 1113 netdev_features_t features) 1114{ 1115 struct ath6kl_vif *vif = netdev_priv(dev); 1116 struct ath6kl *ar = vif->ar; 1117 int err = 0; 1118 1119 if ((features & NETIF_F_RXCSUM) && 1120 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1121 ar->rx_meta_ver = WMI_META_VERSION_2; 1122 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1123 vif->fw_vif_idx, 1124 ar->rx_meta_ver, 0, 0); 1125 if (err) { 1126 dev->features = features & ~NETIF_F_RXCSUM; 1127 return err; 1128 } 1129 } else if (!(features & NETIF_F_RXCSUM) && 1130 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1131 ar->rx_meta_ver = 0; 1132 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1133 vif->fw_vif_idx, 1134 ar->rx_meta_ver, 0, 0); 1135 if (err) { 1136 dev->features = features | NETIF_F_RXCSUM; 1137 return err; 1138 } 1139 1140 } 1141 1142 return err; 1143} 1144 1145static void ath6kl_set_multicast_list(struct net_device *ndev) 1146{ 1147 struct ath6kl_vif *vif = netdev_priv(ndev); 1148 bool mc_all_on = false; 1149 int mc_count = netdev_mc_count(ndev); 1150 struct netdev_hw_addr *ha; 1151 bool found; 1152 struct ath6kl_mc_filter *mc_filter, *tmp; 1153 struct list_head mc_filter_new; 1154 int ret; 1155 1156 if (!test_bit(WMI_READY, &vif->ar->flag) || 1157 !test_bit(WLAN_ENABLED, &vif->flags)) 1158 return; 1159 1160 /* Enable multicast-all filter. */ 1161 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1162 !!(ndev->flags & IFF_ALLMULTI) || 1163 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1164 1165 if (mc_all_on) 1166 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1167 else 1168 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1169 1170 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON); 1171 1172 if (!(ndev->flags & IFF_MULTICAST)) { 1173 mc_all_on = false; 1174 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1175 } else { 1176 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1177 } 1178 1179 /* Enable/disable "multicast-all" filter*/ 1180 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n", 1181 mc_all_on ? "enabling" : "disabling"); 1182 1183 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1184 mc_all_on); 1185 if (ret) { 1186 ath6kl_warn("Failed to %s multicast-all receive\n", 1187 mc_all_on ? "enable" : "disable"); 1188 return; 1189 } 1190 1191 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) 1192 return; 1193 1194 /* Keep the driver and firmware mcast list in sync. */ 1195 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1196 found = false; 1197 netdev_for_each_mc_addr(ha, ndev) { 1198 if (memcmp(ha->addr, mc_filter->hw_addr, 1199 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1200 found = true; 1201 break; 1202 } 1203 } 1204 1205 if (!found) { 1206 /* 1207 * Delete the filter which was previously set 1208 * but not in the new request. 1209 */ 1210 ath6kl_dbg(ATH6KL_DBG_TRC, 1211 "Removing %pM from multicast filter\n", 1212 mc_filter->hw_addr); 1213 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1214 vif->fw_vif_idx, mc_filter->hw_addr, 1215 false); 1216 if (ret) { 1217 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1218 mc_filter->hw_addr); 1219 return; 1220 } 1221 1222 list_del(&mc_filter->list); 1223 kfree(mc_filter); 1224 } 1225 } 1226 1227 INIT_LIST_HEAD(&mc_filter_new); 1228 1229 netdev_for_each_mc_addr(ha, ndev) { 1230 found = false; 1231 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1232 if (memcmp(ha->addr, mc_filter->hw_addr, 1233 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1234 found = true; 1235 break; 1236 } 1237 } 1238 1239 if (!found) { 1240 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1241 GFP_ATOMIC); 1242 if (!mc_filter) { 1243 WARN_ON(1); 1244 goto out; 1245 } 1246 1247 memcpy(mc_filter->hw_addr, ha->addr, 1248 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1249 /* Set the multicast filter */ 1250 ath6kl_dbg(ATH6KL_DBG_TRC, 1251 "Adding %pM to multicast filter list\n", 1252 mc_filter->hw_addr); 1253 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1254 vif->fw_vif_idx, mc_filter->hw_addr, 1255 true); 1256 if (ret) { 1257 ath6kl_warn("Failed to add multicast filter :%pM\n", 1258 mc_filter->hw_addr); 1259 kfree(mc_filter); 1260 goto out; 1261 } 1262 1263 list_add_tail(&mc_filter->list, &mc_filter_new); 1264 } 1265 } 1266 1267out: 1268 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1269} 1270 1271static const struct net_device_ops ath6kl_netdev_ops = { 1272 .ndo_open = ath6kl_open, 1273 .ndo_stop = ath6kl_close, 1274 .ndo_start_xmit = ath6kl_data_tx, 1275 .ndo_get_stats = ath6kl_get_stats, 1276 .ndo_set_features = ath6kl_set_features, 1277 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1278}; 1279 1280void init_netdev(struct net_device *dev) 1281{ 1282 dev->netdev_ops = &ath6kl_netdev_ops; 1283 dev->destructor = free_netdev; 1284 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1285 1286 dev->needed_headroom = ETH_HLEN; 1287 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1288 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1289 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1290 1291 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1292 1293 return; 1294} 1295