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 ret = ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 297 if (ret) 298 goto out; 299 300 address = TARG_VTOP(ar->target_type, 301 le32_to_cpu(debug_hdr.dbuf_addr)); 302 firstbuf = address; 303 dropped = le32_to_cpu(debug_hdr.dropped); 304 ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 305 if (ret) 306 goto out; 307 308 loop = 100; 309 310 do { 311 address = TARG_VTOP(ar->target_type, 312 le32_to_cpu(debug_buf.buffer_addr)); 313 length = le32_to_cpu(debug_buf.length); 314 315 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 316 le32_to_cpu(debug_buf.bufsize))) { 317 length = ALIGN(length, 4); 318 319 ret = ath6kl_diag_read(ar, address, 320 buf, length); 321 if (ret) 322 goto out; 323 324 ath6kl_debug_fwlog_event(ar, buf, length); 325 } 326 327 address = TARG_VTOP(ar->target_type, 328 le32_to_cpu(debug_buf.next)); 329 ret = ath6kl_diag_read(ar, address, &debug_buf, 330 sizeof(debug_buf)); 331 if (ret) 332 goto out; 333 334 loop--; 335 336 if (WARN_ON(loop == 0)) { 337 ret = -ETIMEDOUT; 338 goto out; 339 } 340 } while (address != firstbuf); 341 342 out: 343 kfree(buf); 344 345 return ret; 346 } 347 348 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 349 { 350 u8 index; 351 u8 keyusage; 352 353 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 354 if (vif->wep_key_list[index].key_len) { 355 keyusage = GROUP_USAGE; 356 if (index == vif->def_txkey_index) 357 keyusage |= TX_USAGE; 358 359 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 360 index, 361 WEP_CRYPT, 362 keyusage, 363 vif->wep_key_list[index].key_len, 364 NULL, 0, 365 vif->wep_key_list[index].key, 366 KEY_OP_INIT_VAL, NULL, 367 NO_SYNC_WMIFLAG); 368 } 369 } 370 } 371 372 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 373 { 374 struct ath6kl *ar = vif->ar; 375 struct ath6kl_req_key *ik; 376 int res; 377 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 378 379 ik = &ar->ap_mode_bkey; 380 381 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 382 383 switch (vif->auth_mode) { 384 case NONE_AUTH: 385 if (vif->prwise_crypto == WEP_CRYPT) 386 ath6kl_install_static_wep_keys(vif); 387 if (!ik->valid || ik->key_type != WAPI_CRYPT) 388 break; 389 /* for WAPI, we need to set the delayed group key, continue: */ 390 case WPA_PSK_AUTH: 391 case WPA2_PSK_AUTH: 392 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 393 if (!ik->valid) 394 break; 395 396 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 397 "Delayed addkey for the initial group key for AP mode\n"); 398 memset(key_rsc, 0, sizeof(key_rsc)); 399 res = ath6kl_wmi_addkey_cmd( 400 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 401 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 402 ik->key, 403 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 404 if (res) { 405 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 406 "Delayed addkey failed: %d\n", res); 407 } 408 break; 409 } 410 411 if (ar->last_ch != channel) 412 /* we actually don't know the phymode, default to HT20 */ 413 ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20); 414 415 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 416 set_bit(CONNECTED, &vif->flags); 417 netif_carrier_on(vif->ndev); 418 } 419 420 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 421 u8 keymgmt, u8 ucipher, u8 auth, 422 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 423 { 424 u8 *ies = NULL, *wpa_ie = NULL, *pos; 425 size_t ies_len = 0; 426 struct station_info sinfo; 427 428 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 429 430 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 431 struct ieee80211_mgmt *mgmt = 432 (struct ieee80211_mgmt *) assoc_info; 433 if (ieee80211_is_assoc_req(mgmt->frame_control) && 434 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 435 sizeof(mgmt->u.assoc_req)) { 436 ies = mgmt->u.assoc_req.variable; 437 ies_len = assoc_info + assoc_req_len - ies; 438 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 439 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 440 + sizeof(mgmt->u.reassoc_req)) { 441 ies = mgmt->u.reassoc_req.variable; 442 ies_len = assoc_info + assoc_req_len - ies; 443 } 444 } 445 446 pos = ies; 447 while (pos && pos + 1 < ies + ies_len) { 448 if (pos + 2 + pos[1] > ies + ies_len) 449 break; 450 if (pos[0] == WLAN_EID_RSN) 451 wpa_ie = pos; /* RSN IE */ 452 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 453 pos[1] >= 4 && 454 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 455 if (pos[5] == 0x01) 456 wpa_ie = pos; /* WPA IE */ 457 else if (pos[5] == 0x04) { 458 wpa_ie = pos; /* WPS IE */ 459 break; /* overrides WPA/RSN IE */ 460 } 461 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 462 /* 463 * Note: WAPI Parameter Set IE re-uses Element ID that 464 * was officially allocated for BSS AC Access Delay. As 465 * such, we need to be a bit more careful on when 466 * parsing the frame. However, BSS AC Access Delay 467 * element is not supposed to be included in 468 * (Re)Association Request frames, so this should not 469 * cause problems. 470 */ 471 wpa_ie = pos; /* WAPI IE */ 472 break; 473 } 474 pos += 2 + pos[1]; 475 } 476 477 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 478 wpa_ie ? 2 + wpa_ie[1] : 0, 479 keymgmt, ucipher, auth, apsd_info); 480 481 /* send event to application */ 482 memset(&sinfo, 0, sizeof(sinfo)); 483 484 /* TODO: sinfo.generation */ 485 486 sinfo.assoc_req_ies = ies; 487 sinfo.assoc_req_ies_len = ies_len; 488 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 489 490 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 491 492 netif_wake_queue(vif->ndev); 493 } 494 495 void disconnect_timer_handler(unsigned long ptr) 496 { 497 struct net_device *dev = (struct net_device *)ptr; 498 struct ath6kl_vif *vif = netdev_priv(dev); 499 500 ath6kl_init_profile_info(vif); 501 ath6kl_disconnect(vif); 502 } 503 504 void ath6kl_disconnect(struct ath6kl_vif *vif) 505 { 506 if (test_bit(CONNECTED, &vif->flags) || 507 test_bit(CONNECT_PEND, &vif->flags)) { 508 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 509 /* 510 * Disconnect command is issued, clear the connect pending 511 * flag. The connected flag will be cleared in 512 * disconnect event notification. 513 */ 514 clear_bit(CONNECT_PEND, &vif->flags); 515 } 516 } 517 518 /* WMI Event handlers */ 519 520 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver, 521 enum wmi_phy_cap cap) 522 { 523 struct ath6kl *ar = devt; 524 525 memcpy(ar->mac_addr, datap, ETH_ALEN); 526 527 ath6kl_dbg(ATH6KL_DBG_BOOT, 528 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n", 529 ar->mac_addr, sw_ver, abi_ver, cap); 530 531 ar->version.wlan_ver = sw_ver; 532 ar->version.abi_ver = abi_ver; 533 ar->hw.cap = cap; 534 535 if (strlen(ar->wiphy->fw_version) == 0) { 536 snprintf(ar->wiphy->fw_version, 537 sizeof(ar->wiphy->fw_version), 538 "%u.%u.%u.%u", 539 (ar->version.wlan_ver & 0xf0000000) >> 28, 540 (ar->version.wlan_ver & 0x0f000000) >> 24, 541 (ar->version.wlan_ver & 0x00ff0000) >> 16, 542 (ar->version.wlan_ver & 0x0000ffff)); 543 } 544 545 /* indicate to the waiting thread that the ready event was received */ 546 set_bit(WMI_READY, &ar->flag); 547 wake_up(&ar->event_wq); 548 } 549 550 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 551 { 552 struct ath6kl *ar = vif->ar; 553 bool aborted = false; 554 555 if (status != WMI_SCAN_STATUS_SUCCESS) 556 aborted = true; 557 558 ath6kl_cfg80211_scan_complete_event(vif, aborted); 559 560 if (!ar->usr_bss_filter) { 561 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 562 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 563 NONE_BSS_FILTER, 0); 564 } 565 566 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 567 } 568 569 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel) 570 { 571 572 struct ath6kl *ar = vif->ar; 573 574 vif->profile.ch = cpu_to_le16(channel); 575 576 switch (vif->nw_type) { 577 case AP_NETWORK: 578 /* 579 * reconfigure any saved RSN IE capabilites in the beacon / 580 * probe response to stay in sync with the supplicant. 581 */ 582 if (vif->rsn_capab && 583 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 584 ar->fw_capabilities)) 585 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx, 586 WLAN_EID_RSN, WMI_RSN_IE_CAPB, 587 (const u8 *) &vif->rsn_capab, 588 sizeof(vif->rsn_capab)); 589 590 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, 591 &vif->profile); 592 default: 593 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type); 594 return -ENOTSUPP; 595 } 596 } 597 598 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel) 599 { 600 601 struct ath6kl_vif *vif; 602 int res = 0; 603 604 if (!ar->want_ch_switch) 605 return; 606 607 spin_lock_bh(&ar->list_lock); 608 list_for_each_entry(vif, &ar->vif_list, list) { 609 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) 610 res = ath6kl_commit_ch_switch(vif, channel); 611 612 /* if channel switch failed, oh well we tried */ 613 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx); 614 615 if (res) 616 ath6kl_err("channel switch failed nw_type %d res %d\n", 617 vif->nw_type, res); 618 } 619 spin_unlock_bh(&ar->list_lock); 620 } 621 622 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 623 u16 listen_int, u16 beacon_int, 624 enum network_type net_type, u8 beacon_ie_len, 625 u8 assoc_req_len, u8 assoc_resp_len, 626 u8 *assoc_info) 627 { 628 struct ath6kl *ar = vif->ar; 629 630 ath6kl_cfg80211_connect_event(vif, channel, bssid, 631 listen_int, beacon_int, 632 net_type, beacon_ie_len, 633 assoc_req_len, assoc_resp_len, 634 assoc_info); 635 636 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 637 vif->bss_ch = channel; 638 639 if ((vif->nw_type == INFRA_NETWORK)) { 640 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 641 vif->listen_intvl_t, 0); 642 ath6kl_check_ch_switch(ar, channel); 643 } 644 645 netif_wake_queue(vif->ndev); 646 647 /* Update connect & link status atomically */ 648 spin_lock_bh(&vif->if_lock); 649 set_bit(CONNECTED, &vif->flags); 650 clear_bit(CONNECT_PEND, &vif->flags); 651 netif_carrier_on(vif->ndev); 652 spin_unlock_bh(&vif->if_lock); 653 654 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 655 vif->reconnect_flag = 0; 656 657 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 658 memset(ar->node_map, 0, sizeof(ar->node_map)); 659 ar->node_num = 0; 660 ar->next_ep_id = ENDPOINT_2; 661 } 662 663 if (!ar->usr_bss_filter) { 664 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 665 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 666 CURRENT_BSS_FILTER, 0); 667 } 668 } 669 670 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 671 { 672 struct ath6kl_sta *sta; 673 struct ath6kl *ar = vif->ar; 674 u8 tsc[6]; 675 676 /* 677 * For AP case, keyid will have aid of STA which sent pkt with 678 * MIC error. Use this aid to get MAC & send it to hostapd. 679 */ 680 if (vif->nw_type == AP_NETWORK) { 681 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 682 if (!sta) 683 return; 684 685 ath6kl_dbg(ATH6KL_DBG_TRC, 686 "ap tkip mic error received from aid=%d\n", keyid); 687 688 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 689 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 690 NL80211_KEYTYPE_PAIRWISE, keyid, 691 tsc, GFP_KERNEL); 692 } else 693 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 694 695 } 696 697 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 698 { 699 struct wmi_target_stats *tgt_stats = 700 (struct wmi_target_stats *) ptr; 701 struct ath6kl *ar = vif->ar; 702 struct target_stats *stats = &vif->target_stats; 703 struct tkip_ccmp_stats *ccmp_stats; 704 u8 ac; 705 706 if (len < sizeof(*tgt_stats)) 707 return; 708 709 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 710 711 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 712 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 713 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 714 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 715 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 716 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 717 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 718 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 719 stats->tx_rts_success_cnt += 720 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 721 722 for (ac = 0; ac < WMM_NUM_AC; ac++) 723 stats->tx_pkt_per_ac[ac] += 724 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 725 726 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 727 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 728 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 729 stats->tx_mult_retry_cnt += 730 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 731 stats->tx_rts_fail_cnt += 732 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 733 stats->tx_ucast_rate = 734 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 735 736 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 737 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 738 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 739 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 740 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 741 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 742 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 743 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 744 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 745 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 746 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 747 stats->rx_key_cache_miss += 748 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 749 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 750 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 751 stats->rx_ucast_rate = 752 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 753 754 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 755 756 stats->tkip_local_mic_fail += 757 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 758 stats->tkip_cnter_measures_invoked += 759 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 760 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 761 762 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 763 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 764 765 stats->pwr_save_fail_cnt += 766 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 767 stats->noise_floor_calib = 768 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 769 770 stats->cs_bmiss_cnt += 771 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 772 stats->cs_low_rssi_cnt += 773 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 774 stats->cs_connect_cnt += 775 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 776 stats->cs_discon_cnt += 777 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 778 779 stats->cs_ave_beacon_rssi = 780 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 781 782 stats->cs_last_roam_msec = 783 tgt_stats->cserv_stats.cs_last_roam_msec; 784 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 785 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 786 787 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 788 789 stats->wow_pkt_dropped += 790 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 791 stats->wow_host_pkt_wakeups += 792 tgt_stats->wow_stats.wow_host_pkt_wakeups; 793 stats->wow_host_evt_wakeups += 794 tgt_stats->wow_stats.wow_host_evt_wakeups; 795 stats->wow_evt_discarded += 796 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 797 798 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 799 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 800 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 801 802 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 803 clear_bit(STATS_UPDATE_PEND, &vif->flags); 804 wake_up(&ar->event_wq); 805 } 806 } 807 808 static void ath6kl_add_le32(__le32 *var, __le32 val) 809 { 810 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 811 } 812 813 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 814 { 815 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 816 struct ath6kl *ar = vif->ar; 817 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 818 struct wmi_per_sta_stat *st_ap, *st_p; 819 u8 ac; 820 821 if (vif->nw_type == AP_NETWORK) { 822 if (len < sizeof(*p)) 823 return; 824 825 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 826 st_ap = &ap->sta[ac]; 827 st_p = &p->sta[ac]; 828 829 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 830 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 831 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 832 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 833 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 834 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 835 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 836 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 837 } 838 839 } else { 840 ath6kl_update_target_stats(vif, ptr, len); 841 } 842 } 843 844 void ath6kl_wakeup_event(void *dev) 845 { 846 struct ath6kl *ar = (struct ath6kl *) dev; 847 848 wake_up(&ar->event_wq); 849 } 850 851 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 852 { 853 struct ath6kl *ar = (struct ath6kl *) devt; 854 855 ar->tx_pwr = tx_pwr; 856 wake_up(&ar->event_wq); 857 } 858 859 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 860 { 861 struct ath6kl_sta *conn; 862 struct sk_buff *skb; 863 bool psq_empty = false; 864 struct ath6kl *ar = vif->ar; 865 struct ath6kl_mgmt_buff *mgmt_buf; 866 867 conn = ath6kl_find_sta_by_aid(ar, aid); 868 869 if (!conn) 870 return; 871 /* 872 * Send out a packet queued on ps queue. When the ps queue 873 * becomes empty update the PVB for this station. 874 */ 875 spin_lock_bh(&conn->psq_lock); 876 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 877 spin_unlock_bh(&conn->psq_lock); 878 879 if (psq_empty) 880 /* TODO: Send out a NULL data frame */ 881 return; 882 883 spin_lock_bh(&conn->psq_lock); 884 if (conn->mgmt_psq_len > 0) { 885 mgmt_buf = list_first_entry(&conn->mgmt_psq, 886 struct ath6kl_mgmt_buff, list); 887 list_del(&mgmt_buf->list); 888 conn->mgmt_psq_len--; 889 spin_unlock_bh(&conn->psq_lock); 890 891 conn->sta_flags |= STA_PS_POLLED; 892 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 893 mgmt_buf->id, mgmt_buf->freq, 894 mgmt_buf->wait, mgmt_buf->buf, 895 mgmt_buf->len, mgmt_buf->no_cck); 896 conn->sta_flags &= ~STA_PS_POLLED; 897 kfree(mgmt_buf); 898 } else { 899 skb = skb_dequeue(&conn->psq); 900 spin_unlock_bh(&conn->psq_lock); 901 902 conn->sta_flags |= STA_PS_POLLED; 903 ath6kl_data_tx(skb, vif->ndev); 904 conn->sta_flags &= ~STA_PS_POLLED; 905 } 906 907 spin_lock_bh(&conn->psq_lock); 908 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 909 spin_unlock_bh(&conn->psq_lock); 910 911 if (psq_empty) 912 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 913 } 914 915 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 916 { 917 bool mcastq_empty = false; 918 struct sk_buff *skb; 919 struct ath6kl *ar = vif->ar; 920 921 /* 922 * If there are no associated STAs, ignore the DTIM expiry event. 923 * There can be potential race conditions where the last associated 924 * STA may disconnect & before the host could clear the 'Indicate 925 * DTIM' request to the firmware, the firmware would have just 926 * indicated a DTIM expiry event. The race is between 'clear DTIM 927 * expiry cmd' going from the host to the firmware & the DTIM 928 * expiry event happening from the firmware to the host. 929 */ 930 if (!ar->sta_list_index) 931 return; 932 933 spin_lock_bh(&ar->mcastpsq_lock); 934 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 935 spin_unlock_bh(&ar->mcastpsq_lock); 936 937 if (mcastq_empty) 938 return; 939 940 /* set the STA flag to dtim_expired for the frame to go out */ 941 set_bit(DTIM_EXPIRED, &vif->flags); 942 943 spin_lock_bh(&ar->mcastpsq_lock); 944 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 945 spin_unlock_bh(&ar->mcastpsq_lock); 946 947 ath6kl_data_tx(skb, vif->ndev); 948 949 spin_lock_bh(&ar->mcastpsq_lock); 950 } 951 spin_unlock_bh(&ar->mcastpsq_lock); 952 953 clear_bit(DTIM_EXPIRED, &vif->flags); 954 955 /* clear the LSB of the BitMapCtl field of the TIM IE */ 956 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 957 } 958 959 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 960 u8 assoc_resp_len, u8 *assoc_info, 961 u16 prot_reason_status) 962 { 963 struct ath6kl *ar = vif->ar; 964 965 if (vif->nw_type == AP_NETWORK) { 966 /* disconnect due to other STA vif switching channels */ 967 if (reason == BSS_DISCONNECTED && 968 prot_reason_status == WMI_AP_REASON_STA_ROAM) { 969 ar->want_ch_switch |= 1 << vif->fw_vif_idx; 970 /* bail back to this channel if STA vif fails connect */ 971 ar->last_ch = le16_to_cpu(vif->profile.ch); 972 } 973 974 if (prot_reason_status == WMI_AP_REASON_MAX_STA) { 975 /* send max client reached notification to user space */ 976 cfg80211_conn_failed(vif->ndev, bssid, 977 NL80211_CONN_FAIL_MAX_CLIENTS, 978 GFP_KERNEL); 979 } 980 981 if (prot_reason_status == WMI_AP_REASON_ACL) { 982 /* send blocked client notification to user space */ 983 cfg80211_conn_failed(vif->ndev, bssid, 984 NL80211_CONN_FAIL_BLOCKED_CLIENT, 985 GFP_KERNEL); 986 } 987 988 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 989 return; 990 991 /* if no more associated STAs, empty the mcast PS q */ 992 if (ar->sta_list_index == 0) { 993 spin_lock_bh(&ar->mcastpsq_lock); 994 skb_queue_purge(&ar->mcastpsq); 995 spin_unlock_bh(&ar->mcastpsq_lock); 996 997 /* clear the LSB of the TIM IE's BitMapCtl field */ 998 if (test_bit(WMI_READY, &ar->flag)) 999 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 1000 MCAST_AID, 0); 1001 } 1002 1003 if (!is_broadcast_ether_addr(bssid)) { 1004 /* send event to application */ 1005 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1006 } 1007 1008 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1009 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1010 clear_bit(CONNECTED, &vif->flags); 1011 } 1012 return; 1013 } 1014 1015 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1016 assoc_resp_len, assoc_info, 1017 prot_reason_status); 1018 1019 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 1020 1021 del_timer(&vif->disconnect_timer); 1022 1023 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1024 1025 /* 1026 * If the event is due to disconnect cmd from the host, only they 1027 * the target would stop trying to connect. Under any other 1028 * condition, target would keep trying to connect. 1029 */ 1030 if (reason == DISCONNECT_CMD) { 1031 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1032 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1033 NONE_BSS_FILTER, 0); 1034 } else { 1035 set_bit(CONNECT_PEND, &vif->flags); 1036 if (((reason == ASSOC_FAILED) && 1037 (prot_reason_status == 0x11)) || 1038 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 1039 (vif->reconnect_flag == 1))) { 1040 set_bit(CONNECTED, &vif->flags); 1041 return; 1042 } 1043 } 1044 1045 /* restart disconnected concurrent vifs waiting for new channel */ 1046 ath6kl_check_ch_switch(ar, ar->last_ch); 1047 1048 /* update connect & link status atomically */ 1049 spin_lock_bh(&vif->if_lock); 1050 clear_bit(CONNECTED, &vif->flags); 1051 netif_carrier_off(vif->ndev); 1052 spin_unlock_bh(&vif->if_lock); 1053 1054 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1055 vif->reconnect_flag = 0; 1056 1057 if (reason != CSERV_DISCONNECT) 1058 ar->user_key_ctrl = 0; 1059 1060 netif_stop_queue(vif->ndev); 1061 memset(vif->bssid, 0, sizeof(vif->bssid)); 1062 vif->bss_ch = 0; 1063 1064 ath6kl_tx_data_cleanup(ar); 1065 } 1066 1067 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1068 { 1069 struct ath6kl_vif *vif; 1070 1071 spin_lock_bh(&ar->list_lock); 1072 if (list_empty(&ar->vif_list)) { 1073 spin_unlock_bh(&ar->list_lock); 1074 return NULL; 1075 } 1076 1077 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1078 1079 spin_unlock_bh(&ar->list_lock); 1080 1081 return vif; 1082 } 1083 1084 static int ath6kl_open(struct net_device *dev) 1085 { 1086 struct ath6kl_vif *vif = netdev_priv(dev); 1087 1088 set_bit(WLAN_ENABLED, &vif->flags); 1089 1090 if (test_bit(CONNECTED, &vif->flags)) { 1091 netif_carrier_on(dev); 1092 netif_wake_queue(dev); 1093 } else 1094 netif_carrier_off(dev); 1095 1096 return 0; 1097 } 1098 1099 static int ath6kl_close(struct net_device *dev) 1100 { 1101 struct ath6kl_vif *vif = netdev_priv(dev); 1102 1103 netif_stop_queue(dev); 1104 1105 ath6kl_cfg80211_stop(vif); 1106 1107 clear_bit(WLAN_ENABLED, &vif->flags); 1108 1109 return 0; 1110 } 1111 1112 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1113 { 1114 struct ath6kl_vif *vif = netdev_priv(dev); 1115 1116 return &vif->net_stats; 1117 } 1118 1119 static int ath6kl_set_features(struct net_device *dev, 1120 netdev_features_t features) 1121 { 1122 struct ath6kl_vif *vif = netdev_priv(dev); 1123 struct ath6kl *ar = vif->ar; 1124 int err = 0; 1125 1126 if ((features & NETIF_F_RXCSUM) && 1127 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1128 ar->rx_meta_ver = WMI_META_VERSION_2; 1129 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1130 vif->fw_vif_idx, 1131 ar->rx_meta_ver, 0, 0); 1132 if (err) { 1133 dev->features = features & ~NETIF_F_RXCSUM; 1134 return err; 1135 } 1136 } else if (!(features & NETIF_F_RXCSUM) && 1137 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1138 ar->rx_meta_ver = 0; 1139 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1140 vif->fw_vif_idx, 1141 ar->rx_meta_ver, 0, 0); 1142 if (err) { 1143 dev->features = features | NETIF_F_RXCSUM; 1144 return err; 1145 } 1146 1147 } 1148 1149 return err; 1150 } 1151 1152 static void ath6kl_set_multicast_list(struct net_device *ndev) 1153 { 1154 struct ath6kl_vif *vif = netdev_priv(ndev); 1155 bool mc_all_on = false; 1156 int mc_count = netdev_mc_count(ndev); 1157 struct netdev_hw_addr *ha; 1158 bool found; 1159 struct ath6kl_mc_filter *mc_filter, *tmp; 1160 struct list_head mc_filter_new; 1161 int ret; 1162 1163 if (!test_bit(WMI_READY, &vif->ar->flag) || 1164 !test_bit(WLAN_ENABLED, &vif->flags)) 1165 return; 1166 1167 /* Enable multicast-all filter. */ 1168 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1169 !!(ndev->flags & IFF_ALLMULTI) || 1170 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1171 1172 if (mc_all_on) 1173 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1174 else 1175 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1176 1177 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 1178 vif->ar->fw_capabilities)) { 1179 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON); 1180 } 1181 1182 if (!(ndev->flags & IFF_MULTICAST)) { 1183 mc_all_on = false; 1184 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1185 } else { 1186 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1187 } 1188 1189 /* Enable/disable "multicast-all" filter*/ 1190 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n", 1191 mc_all_on ? "enabling" : "disabling"); 1192 1193 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1194 mc_all_on); 1195 if (ret) { 1196 ath6kl_warn("Failed to %s multicast-all receive\n", 1197 mc_all_on ? "enable" : "disable"); 1198 return; 1199 } 1200 1201 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) 1202 return; 1203 1204 /* Keep the driver and firmware mcast list in sync. */ 1205 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1206 found = false; 1207 netdev_for_each_mc_addr(ha, ndev) { 1208 if (memcmp(ha->addr, mc_filter->hw_addr, 1209 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1210 found = true; 1211 break; 1212 } 1213 } 1214 1215 if (!found) { 1216 /* 1217 * Delete the filter which was previously set 1218 * but not in the new request. 1219 */ 1220 ath6kl_dbg(ATH6KL_DBG_TRC, 1221 "Removing %pM from multicast filter\n", 1222 mc_filter->hw_addr); 1223 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1224 vif->fw_vif_idx, mc_filter->hw_addr, 1225 false); 1226 if (ret) { 1227 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1228 mc_filter->hw_addr); 1229 return; 1230 } 1231 1232 list_del(&mc_filter->list); 1233 kfree(mc_filter); 1234 } 1235 } 1236 1237 INIT_LIST_HEAD(&mc_filter_new); 1238 1239 netdev_for_each_mc_addr(ha, ndev) { 1240 found = false; 1241 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1242 if (memcmp(ha->addr, mc_filter->hw_addr, 1243 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1244 found = true; 1245 break; 1246 } 1247 } 1248 1249 if (!found) { 1250 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1251 GFP_ATOMIC); 1252 if (!mc_filter) { 1253 WARN_ON(1); 1254 goto out; 1255 } 1256 1257 memcpy(mc_filter->hw_addr, ha->addr, 1258 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1259 /* Set the multicast filter */ 1260 ath6kl_dbg(ATH6KL_DBG_TRC, 1261 "Adding %pM to multicast filter list\n", 1262 mc_filter->hw_addr); 1263 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1264 vif->fw_vif_idx, mc_filter->hw_addr, 1265 true); 1266 if (ret) { 1267 ath6kl_warn("Failed to add multicast filter :%pM\n", 1268 mc_filter->hw_addr); 1269 kfree(mc_filter); 1270 goto out; 1271 } 1272 1273 list_add_tail(&mc_filter->list, &mc_filter_new); 1274 } 1275 } 1276 1277 out: 1278 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1279 } 1280 1281 static const struct net_device_ops ath6kl_netdev_ops = { 1282 .ndo_open = ath6kl_open, 1283 .ndo_stop = ath6kl_close, 1284 .ndo_start_xmit = ath6kl_data_tx, 1285 .ndo_get_stats = ath6kl_get_stats, 1286 .ndo_set_features = ath6kl_set_features, 1287 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1288 }; 1289 1290 void init_netdev(struct net_device *dev) 1291 { 1292 dev->netdev_ops = &ath6kl_netdev_ops; 1293 dev->destructor = free_netdev; 1294 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1295 1296 dev->needed_headroom = ETH_HLEN; 1297 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) + 1298 sizeof(struct wmi_data_hdr) + 1299 HTC_HDR_LENGTH + 1300 WMI_MAX_TX_META_SZ + 1301 ATH6KL_HTC_ALIGN_BYTES, 4); 1302 1303 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1304 1305 return; 1306 } 1307