main.c revision aa430da41019c1694f6a8e3b8bef1d12ed52b0ad
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->profile.ch = cpu_to_le16(channel); 602 603 switch (vif->nw_type) { 604 case AP_NETWORK: 605 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, 606 &vif->profile); 607 default: 608 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type); 609 return -ENOTSUPP; 610 } 611} 612 613static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel) 614{ 615 616 struct ath6kl_vif *vif; 617 int res = 0; 618 619 if (!ar->want_ch_switch) 620 return; 621 622 spin_lock_bh(&ar->list_lock); 623 list_for_each_entry(vif, &ar->vif_list, list) { 624 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) 625 res = ath6kl_commit_ch_switch(vif, channel); 626 627 if (res) 628 ath6kl_err("channel switch failed nw_type %d res %d\n", 629 vif->nw_type, res); 630 } 631 spin_unlock_bh(&ar->list_lock); 632} 633 634void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 635 u16 listen_int, u16 beacon_int, 636 enum network_type net_type, u8 beacon_ie_len, 637 u8 assoc_req_len, u8 assoc_resp_len, 638 u8 *assoc_info) 639{ 640 struct ath6kl *ar = vif->ar; 641 642 ath6kl_cfg80211_connect_event(vif, channel, bssid, 643 listen_int, beacon_int, 644 net_type, beacon_ie_len, 645 assoc_req_len, assoc_resp_len, 646 assoc_info); 647 648 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 649 vif->bss_ch = channel; 650 651 if ((vif->nw_type == INFRA_NETWORK)) { 652 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 653 vif->listen_intvl_t, 0); 654 ath6kl_check_ch_switch(ar, channel); 655 } 656 657 netif_wake_queue(vif->ndev); 658 659 /* Update connect & link status atomically */ 660 spin_lock_bh(&vif->if_lock); 661 set_bit(CONNECTED, &vif->flags); 662 clear_bit(CONNECT_PEND, &vif->flags); 663 netif_carrier_on(vif->ndev); 664 spin_unlock_bh(&vif->if_lock); 665 666 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 667 vif->reconnect_flag = 0; 668 669 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 670 memset(ar->node_map, 0, sizeof(ar->node_map)); 671 ar->node_num = 0; 672 ar->next_ep_id = ENDPOINT_2; 673 } 674 675 if (!ar->usr_bss_filter) { 676 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 677 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 678 CURRENT_BSS_FILTER, 0); 679 } 680} 681 682void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 683{ 684 struct ath6kl_sta *sta; 685 struct ath6kl *ar = vif->ar; 686 u8 tsc[6]; 687 688 /* 689 * For AP case, keyid will have aid of STA which sent pkt with 690 * MIC error. Use this aid to get MAC & send it to hostapd. 691 */ 692 if (vif->nw_type == AP_NETWORK) { 693 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 694 if (!sta) 695 return; 696 697 ath6kl_dbg(ATH6KL_DBG_TRC, 698 "ap tkip mic error received from aid=%d\n", keyid); 699 700 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 701 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 702 NL80211_KEYTYPE_PAIRWISE, keyid, 703 tsc, GFP_KERNEL); 704 } else 705 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 706 707} 708 709static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 710{ 711 struct wmi_target_stats *tgt_stats = 712 (struct wmi_target_stats *) ptr; 713 struct ath6kl *ar = vif->ar; 714 struct target_stats *stats = &vif->target_stats; 715 struct tkip_ccmp_stats *ccmp_stats; 716 u8 ac; 717 718 if (len < sizeof(*tgt_stats)) 719 return; 720 721 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 722 723 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 724 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 725 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 726 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 727 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 728 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 729 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 730 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 731 stats->tx_rts_success_cnt += 732 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 733 734 for (ac = 0; ac < WMM_NUM_AC; ac++) 735 stats->tx_pkt_per_ac[ac] += 736 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 737 738 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 739 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 740 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 741 stats->tx_mult_retry_cnt += 742 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 743 stats->tx_rts_fail_cnt += 744 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 745 stats->tx_ucast_rate = 746 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 747 748 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 749 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 750 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 751 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 752 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 753 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 754 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 755 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 756 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 757 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 758 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 759 stats->rx_key_cache_miss += 760 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 761 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 762 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 763 stats->rx_ucast_rate = 764 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 765 766 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 767 768 stats->tkip_local_mic_fail += 769 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 770 stats->tkip_cnter_measures_invoked += 771 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 772 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 773 774 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 775 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 776 777 stats->pwr_save_fail_cnt += 778 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 779 stats->noise_floor_calib = 780 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 781 782 stats->cs_bmiss_cnt += 783 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 784 stats->cs_low_rssi_cnt += 785 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 786 stats->cs_connect_cnt += 787 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 788 stats->cs_discon_cnt += 789 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 790 791 stats->cs_ave_beacon_rssi = 792 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 793 794 stats->cs_last_roam_msec = 795 tgt_stats->cserv_stats.cs_last_roam_msec; 796 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 797 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 798 799 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 800 801 stats->wow_pkt_dropped += 802 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 803 stats->wow_host_pkt_wakeups += 804 tgt_stats->wow_stats.wow_host_pkt_wakeups; 805 stats->wow_host_evt_wakeups += 806 tgt_stats->wow_stats.wow_host_evt_wakeups; 807 stats->wow_evt_discarded += 808 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 809 810 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 811 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 812 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 813 814 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 815 clear_bit(STATS_UPDATE_PEND, &vif->flags); 816 wake_up(&ar->event_wq); 817 } 818} 819 820static void ath6kl_add_le32(__le32 *var, __le32 val) 821{ 822 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 823} 824 825void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 826{ 827 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 828 struct ath6kl *ar = vif->ar; 829 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 830 struct wmi_per_sta_stat *st_ap, *st_p; 831 u8 ac; 832 833 if (vif->nw_type == AP_NETWORK) { 834 if (len < sizeof(*p)) 835 return; 836 837 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 838 st_ap = &ap->sta[ac]; 839 st_p = &p->sta[ac]; 840 841 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 842 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 843 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 844 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 845 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 846 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 847 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 848 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 849 } 850 851 } else { 852 ath6kl_update_target_stats(vif, ptr, len); 853 } 854} 855 856void ath6kl_wakeup_event(void *dev) 857{ 858 struct ath6kl *ar = (struct ath6kl *) dev; 859 860 wake_up(&ar->event_wq); 861} 862 863void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 864{ 865 struct ath6kl *ar = (struct ath6kl *) devt; 866 867 ar->tx_pwr = tx_pwr; 868 wake_up(&ar->event_wq); 869} 870 871void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 872{ 873 struct ath6kl_sta *conn; 874 struct sk_buff *skb; 875 bool psq_empty = false; 876 struct ath6kl *ar = vif->ar; 877 struct ath6kl_mgmt_buff *mgmt_buf; 878 879 conn = ath6kl_find_sta_by_aid(ar, aid); 880 881 if (!conn) 882 return; 883 /* 884 * Send out a packet queued on ps queue. When the ps queue 885 * becomes empty update the PVB for this station. 886 */ 887 spin_lock_bh(&conn->psq_lock); 888 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 889 spin_unlock_bh(&conn->psq_lock); 890 891 if (psq_empty) 892 /* TODO: Send out a NULL data frame */ 893 return; 894 895 spin_lock_bh(&conn->psq_lock); 896 if (conn->mgmt_psq_len > 0) { 897 mgmt_buf = list_first_entry(&conn->mgmt_psq, 898 struct ath6kl_mgmt_buff, list); 899 list_del(&mgmt_buf->list); 900 conn->mgmt_psq_len--; 901 spin_unlock_bh(&conn->psq_lock); 902 903 conn->sta_flags |= STA_PS_POLLED; 904 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 905 mgmt_buf->id, mgmt_buf->freq, 906 mgmt_buf->wait, mgmt_buf->buf, 907 mgmt_buf->len, mgmt_buf->no_cck); 908 conn->sta_flags &= ~STA_PS_POLLED; 909 kfree(mgmt_buf); 910 } else { 911 skb = skb_dequeue(&conn->psq); 912 spin_unlock_bh(&conn->psq_lock); 913 914 conn->sta_flags |= STA_PS_POLLED; 915 ath6kl_data_tx(skb, vif->ndev); 916 conn->sta_flags &= ~STA_PS_POLLED; 917 } 918 919 spin_lock_bh(&conn->psq_lock); 920 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 921 spin_unlock_bh(&conn->psq_lock); 922 923 if (psq_empty) 924 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 925} 926 927void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 928{ 929 bool mcastq_empty = false; 930 struct sk_buff *skb; 931 struct ath6kl *ar = vif->ar; 932 933 /* 934 * If there are no associated STAs, ignore the DTIM expiry event. 935 * There can be potential race conditions where the last associated 936 * STA may disconnect & before the host could clear the 'Indicate 937 * DTIM' request to the firmware, the firmware would have just 938 * indicated a DTIM expiry event. The race is between 'clear DTIM 939 * expiry cmd' going from the host to the firmware & the DTIM 940 * expiry event happening from the firmware to the host. 941 */ 942 if (!ar->sta_list_index) 943 return; 944 945 spin_lock_bh(&ar->mcastpsq_lock); 946 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 947 spin_unlock_bh(&ar->mcastpsq_lock); 948 949 if (mcastq_empty) 950 return; 951 952 /* set the STA flag to dtim_expired for the frame to go out */ 953 set_bit(DTIM_EXPIRED, &vif->flags); 954 955 spin_lock_bh(&ar->mcastpsq_lock); 956 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 957 spin_unlock_bh(&ar->mcastpsq_lock); 958 959 ath6kl_data_tx(skb, vif->ndev); 960 961 spin_lock_bh(&ar->mcastpsq_lock); 962 } 963 spin_unlock_bh(&ar->mcastpsq_lock); 964 965 clear_bit(DTIM_EXPIRED, &vif->flags); 966 967 /* clear the LSB of the BitMapCtl field of the TIM IE */ 968 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 969} 970 971void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 972 u8 assoc_resp_len, u8 *assoc_info, 973 u16 prot_reason_status) 974{ 975 struct ath6kl *ar = vif->ar; 976 977 if (vif->nw_type == AP_NETWORK) { 978 /* disconnect due to other STA vif switching channels */ 979 if (reason == BSS_DISCONNECTED && 980 prot_reason_status == WMI_AP_REASON_STA_ROAM) 981 ar->want_ch_switch |= 1 << vif->fw_vif_idx; 982 983 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 984 return; 985 986 /* if no more associated STAs, empty the mcast PS q */ 987 if (ar->sta_list_index == 0) { 988 spin_lock_bh(&ar->mcastpsq_lock); 989 skb_queue_purge(&ar->mcastpsq); 990 spin_unlock_bh(&ar->mcastpsq_lock); 991 992 /* clear the LSB of the TIM IE's BitMapCtl field */ 993 if (test_bit(WMI_READY, &ar->flag)) 994 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 995 MCAST_AID, 0); 996 } 997 998 if (!is_broadcast_ether_addr(bssid)) { 999 /* send event to application */ 1000 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1001 } 1002 1003 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1004 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1005 clear_bit(CONNECTED, &vif->flags); 1006 } 1007 return; 1008 } 1009 1010 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1011 assoc_resp_len, assoc_info, 1012 prot_reason_status); 1013 1014 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 1015 1016 del_timer(&vif->disconnect_timer); 1017 1018 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1019 1020 /* 1021 * If the event is due to disconnect cmd from the host, only they 1022 * the target would stop trying to connect. Under any other 1023 * condition, target would keep trying to connect. 1024 */ 1025 if (reason == DISCONNECT_CMD) { 1026 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1027 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1028 NONE_BSS_FILTER, 0); 1029 } else { 1030 set_bit(CONNECT_PEND, &vif->flags); 1031 if (((reason == ASSOC_FAILED) && 1032 (prot_reason_status == 0x11)) || 1033 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 1034 (vif->reconnect_flag == 1))) { 1035 set_bit(CONNECTED, &vif->flags); 1036 return; 1037 } 1038 } 1039 1040 /* update connect & link status atomically */ 1041 spin_lock_bh(&vif->if_lock); 1042 clear_bit(CONNECTED, &vif->flags); 1043 netif_carrier_off(vif->ndev); 1044 spin_unlock_bh(&vif->if_lock); 1045 1046 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1047 vif->reconnect_flag = 0; 1048 1049 if (reason != CSERV_DISCONNECT) 1050 ar->user_key_ctrl = 0; 1051 1052 netif_stop_queue(vif->ndev); 1053 memset(vif->bssid, 0, sizeof(vif->bssid)); 1054 vif->bss_ch = 0; 1055 1056 ath6kl_tx_data_cleanup(ar); 1057} 1058 1059struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1060{ 1061 struct ath6kl_vif *vif; 1062 1063 spin_lock_bh(&ar->list_lock); 1064 if (list_empty(&ar->vif_list)) { 1065 spin_unlock_bh(&ar->list_lock); 1066 return NULL; 1067 } 1068 1069 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1070 1071 spin_unlock_bh(&ar->list_lock); 1072 1073 return vif; 1074} 1075 1076static int ath6kl_open(struct net_device *dev) 1077{ 1078 struct ath6kl_vif *vif = netdev_priv(dev); 1079 1080 set_bit(WLAN_ENABLED, &vif->flags); 1081 1082 if (test_bit(CONNECTED, &vif->flags)) { 1083 netif_carrier_on(dev); 1084 netif_wake_queue(dev); 1085 } else 1086 netif_carrier_off(dev); 1087 1088 return 0; 1089} 1090 1091static int ath6kl_close(struct net_device *dev) 1092{ 1093 struct ath6kl_vif *vif = netdev_priv(dev); 1094 1095 netif_stop_queue(dev); 1096 1097 ath6kl_cfg80211_stop(vif); 1098 1099 clear_bit(WLAN_ENABLED, &vif->flags); 1100 1101 return 0; 1102} 1103 1104static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1105{ 1106 struct ath6kl_vif *vif = netdev_priv(dev); 1107 1108 return &vif->net_stats; 1109} 1110 1111static int ath6kl_set_features(struct net_device *dev, 1112 netdev_features_t features) 1113{ 1114 struct ath6kl_vif *vif = netdev_priv(dev); 1115 struct ath6kl *ar = vif->ar; 1116 int err = 0; 1117 1118 if ((features & NETIF_F_RXCSUM) && 1119 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1120 ar->rx_meta_ver = WMI_META_VERSION_2; 1121 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1122 vif->fw_vif_idx, 1123 ar->rx_meta_ver, 0, 0); 1124 if (err) { 1125 dev->features = features & ~NETIF_F_RXCSUM; 1126 return err; 1127 } 1128 } else if (!(features & NETIF_F_RXCSUM) && 1129 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1130 ar->rx_meta_ver = 0; 1131 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1132 vif->fw_vif_idx, 1133 ar->rx_meta_ver, 0, 0); 1134 if (err) { 1135 dev->features = features | NETIF_F_RXCSUM; 1136 return err; 1137 } 1138 1139 } 1140 1141 return err; 1142} 1143 1144static void ath6kl_set_multicast_list(struct net_device *ndev) 1145{ 1146 struct ath6kl_vif *vif = netdev_priv(ndev); 1147 bool mc_all_on = false; 1148 int mc_count = netdev_mc_count(ndev); 1149 struct netdev_hw_addr *ha; 1150 bool found; 1151 struct ath6kl_mc_filter *mc_filter, *tmp; 1152 struct list_head mc_filter_new; 1153 int ret; 1154 1155 if (!test_bit(WMI_READY, &vif->ar->flag) || 1156 !test_bit(WLAN_ENABLED, &vif->flags)) 1157 return; 1158 1159 /* Enable multicast-all filter. */ 1160 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1161 !!(ndev->flags & IFF_ALLMULTI) || 1162 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1163 1164 if (mc_all_on) 1165 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1166 else 1167 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1168 1169 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON); 1170 1171 if (!(ndev->flags & IFF_MULTICAST)) { 1172 mc_all_on = false; 1173 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1174 } else { 1175 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1176 } 1177 1178 /* Enable/disable "multicast-all" filter*/ 1179 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n", 1180 mc_all_on ? "enabling" : "disabling"); 1181 1182 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1183 mc_all_on); 1184 if (ret) { 1185 ath6kl_warn("Failed to %s multicast-all receive\n", 1186 mc_all_on ? "enable" : "disable"); 1187 return; 1188 } 1189 1190 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) 1191 return; 1192 1193 /* Keep the driver and firmware mcast list in sync. */ 1194 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1195 found = false; 1196 netdev_for_each_mc_addr(ha, ndev) { 1197 if (memcmp(ha->addr, mc_filter->hw_addr, 1198 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1199 found = true; 1200 break; 1201 } 1202 } 1203 1204 if (!found) { 1205 /* 1206 * Delete the filter which was previously set 1207 * but not in the new request. 1208 */ 1209 ath6kl_dbg(ATH6KL_DBG_TRC, 1210 "Removing %pM from multicast filter\n", 1211 mc_filter->hw_addr); 1212 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1213 vif->fw_vif_idx, mc_filter->hw_addr, 1214 false); 1215 if (ret) { 1216 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1217 mc_filter->hw_addr); 1218 return; 1219 } 1220 1221 list_del(&mc_filter->list); 1222 kfree(mc_filter); 1223 } 1224 } 1225 1226 INIT_LIST_HEAD(&mc_filter_new); 1227 1228 netdev_for_each_mc_addr(ha, ndev) { 1229 found = false; 1230 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1231 if (memcmp(ha->addr, mc_filter->hw_addr, 1232 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1233 found = true; 1234 break; 1235 } 1236 } 1237 1238 if (!found) { 1239 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1240 GFP_ATOMIC); 1241 if (!mc_filter) { 1242 WARN_ON(1); 1243 goto out; 1244 } 1245 1246 memcpy(mc_filter->hw_addr, ha->addr, 1247 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1248 /* Set the multicast filter */ 1249 ath6kl_dbg(ATH6KL_DBG_TRC, 1250 "Adding %pM to multicast filter list\n", 1251 mc_filter->hw_addr); 1252 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1253 vif->fw_vif_idx, mc_filter->hw_addr, 1254 true); 1255 if (ret) { 1256 ath6kl_warn("Failed to add multicast filter :%pM\n", 1257 mc_filter->hw_addr); 1258 kfree(mc_filter); 1259 goto out; 1260 } 1261 1262 list_add_tail(&mc_filter->list, &mc_filter_new); 1263 } 1264 } 1265 1266out: 1267 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1268} 1269 1270static const struct net_device_ops ath6kl_netdev_ops = { 1271 .ndo_open = ath6kl_open, 1272 .ndo_stop = ath6kl_close, 1273 .ndo_start_xmit = ath6kl_data_tx, 1274 .ndo_get_stats = ath6kl_get_stats, 1275 .ndo_set_features = ath6kl_set_features, 1276 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1277}; 1278 1279void init_netdev(struct net_device *dev) 1280{ 1281 dev->netdev_ops = &ath6kl_netdev_ops; 1282 dev->destructor = free_netdev; 1283 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1284 1285 dev->needed_headroom = ETH_HLEN; 1286 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1287 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1288 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1289 1290 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1291 1292 return; 1293} 1294