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 if (is_zero_ether_addr(node_addr)) 33 return NULL; 34 35 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 36 37 for (i = 0; i < max_conn; i++) { 38 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 39 conn = &ar->sta_list[i]; 40 break; 41 } 42 } 43 44 return conn; 45 } 46 47 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 48 { 49 struct ath6kl_sta *conn = NULL; 50 u8 ctr; 51 52 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 53 if (ar->sta_list[ctr].aid == aid) { 54 conn = &ar->sta_list[ctr]; 55 break; 56 } 57 } 58 return conn; 59 } 60 61 static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid, 62 u8 *wpaie, size_t ielen, u8 keymgmt, 63 u8 ucipher, u8 auth, u8 apsd_info) 64 { 65 struct ath6kl *ar = vif->ar; 66 struct ath6kl_sta *sta; 67 u8 free_slot; 68 69 free_slot = aid - 1; 70 71 sta = &ar->sta_list[free_slot]; 72 memcpy(sta->mac, mac, ETH_ALEN); 73 if (ielen <= ATH6KL_MAX_IE) 74 memcpy(sta->wpa_ie, wpaie, ielen); 75 sta->aid = aid; 76 sta->keymgmt = keymgmt; 77 sta->ucipher = ucipher; 78 sta->auth = auth; 79 sta->apsd_info = apsd_info; 80 81 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 82 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 83 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn); 84 } 85 86 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 87 { 88 struct ath6kl_sta *sta = &ar->sta_list[i]; 89 struct ath6kl_mgmt_buff *entry, *tmp; 90 91 /* empty the queued pkts in the PS queue if any */ 92 spin_lock_bh(&sta->psq_lock); 93 skb_queue_purge(&sta->psq); 94 skb_queue_purge(&sta->apsdq); 95 96 if (sta->mgmt_psq_len != 0) { 97 list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) { 98 kfree(entry); 99 } 100 INIT_LIST_HEAD(&sta->mgmt_psq); 101 sta->mgmt_psq_len = 0; 102 } 103 104 spin_unlock_bh(&sta->psq_lock); 105 106 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 107 sizeof(struct wmi_per_sta_stat)); 108 eth_zero_addr(sta->mac); 109 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 110 sta->aid = 0; 111 sta->sta_flags = 0; 112 113 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 114 aggr_reset_state(sta->aggr_conn); 115 } 116 117 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 118 { 119 u8 i, removed = 0; 120 121 if (is_zero_ether_addr(mac)) 122 return removed; 123 124 if (is_broadcast_ether_addr(mac)) { 125 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 126 127 for (i = 0; i < AP_MAX_NUM_STA; i++) { 128 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 129 ath6kl_sta_cleanup(ar, i); 130 removed = 1; 131 } 132 } 133 } else { 134 for (i = 0; i < AP_MAX_NUM_STA; i++) { 135 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 136 ath6kl_dbg(ATH6KL_DBG_TRC, 137 "deleting station %pM aid=%d reason=%d\n", 138 mac, ar->sta_list[i].aid, reason); 139 ath6kl_sta_cleanup(ar, i); 140 removed = 1; 141 break; 142 } 143 } 144 } 145 146 return removed; 147 } 148 149 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 150 { 151 struct ath6kl *ar = devt; 152 return ar->ac2ep_map[ac]; 153 } 154 155 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 156 { 157 struct ath6kl_cookie *cookie; 158 159 cookie = ar->cookie_list; 160 if (cookie != NULL) { 161 ar->cookie_list = cookie->arc_list_next; 162 ar->cookie_count--; 163 } 164 165 return cookie; 166 } 167 168 void ath6kl_cookie_init(struct ath6kl *ar) 169 { 170 u32 i; 171 172 ar->cookie_list = NULL; 173 ar->cookie_count = 0; 174 175 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 176 177 for (i = 0; i < MAX_COOKIE_NUM; i++) 178 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 179 } 180 181 void ath6kl_cookie_cleanup(struct ath6kl *ar) 182 { 183 ar->cookie_list = NULL; 184 ar->cookie_count = 0; 185 } 186 187 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 188 { 189 /* Insert first */ 190 191 if (!ar || !cookie) 192 return; 193 194 cookie->arc_list_next = ar->cookie_list; 195 ar->cookie_list = cookie; 196 ar->cookie_count++; 197 } 198 199 /* 200 * Read from the hardware through its diagnostic window. No cooperation 201 * from the firmware is required for this. 202 */ 203 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 204 { 205 int ret; 206 207 ret = ath6kl_hif_diag_read32(ar, address, value); 208 if (ret) { 209 ath6kl_warn("failed to read32 through diagnose window: %d\n", 210 ret); 211 return ret; 212 } 213 214 return 0; 215 } 216 217 /* 218 * Write to the ATH6KL through its diagnostic window. No cooperation from 219 * the Target is required for this. 220 */ 221 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 222 { 223 int ret; 224 225 ret = ath6kl_hif_diag_write32(ar, address, value); 226 227 if (ret) { 228 ath6kl_err("failed to write 0x%x during diagnose window to 0x%x\n", 229 address, value); 230 return ret; 231 } 232 233 return 0; 234 } 235 236 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 237 { 238 u32 count, *buf = data; 239 int ret; 240 241 if (WARN_ON(length % 4)) 242 return -EINVAL; 243 244 for (count = 0; count < length / 4; count++, address += 4) { 245 ret = ath6kl_diag_read32(ar, address, &buf[count]); 246 if (ret) 247 return ret; 248 } 249 250 return 0; 251 } 252 253 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 254 { 255 u32 count; 256 __le32 *buf = data; 257 int ret; 258 259 if (WARN_ON(length % 4)) 260 return -EINVAL; 261 262 for (count = 0; count < length / 4; count++, address += 4) { 263 ret = ath6kl_diag_write32(ar, address, buf[count]); 264 if (ret) 265 return ret; 266 } 267 268 return 0; 269 } 270 271 int ath6kl_read_fwlogs(struct ath6kl *ar) 272 { 273 struct ath6kl_dbglog_hdr debug_hdr; 274 struct ath6kl_dbglog_buf debug_buf; 275 u32 address, length, firstbuf, debug_hdr_addr; 276 int ret, loop; 277 u8 *buf; 278 279 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 280 if (!buf) 281 return -ENOMEM; 282 283 address = TARG_VTOP(ar->target_type, 284 ath6kl_get_hi_item_addr(ar, 285 HI_ITEM(hi_dbglog_hdr))); 286 287 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 288 if (ret) 289 goto out; 290 291 /* Get the contents of the ring buffer */ 292 if (debug_hdr_addr == 0) { 293 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 294 ret = -EINVAL; 295 goto out; 296 } 297 298 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 299 ret = ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 300 if (ret) 301 goto out; 302 303 address = TARG_VTOP(ar->target_type, 304 le32_to_cpu(debug_hdr.dbuf_addr)); 305 firstbuf = address; 306 ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 307 if (ret) 308 goto out; 309 310 loop = 100; 311 312 do { 313 address = TARG_VTOP(ar->target_type, 314 le32_to_cpu(debug_buf.buffer_addr)); 315 length = le32_to_cpu(debug_buf.length); 316 317 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 318 le32_to_cpu(debug_buf.bufsize))) { 319 length = ALIGN(length, 4); 320 321 ret = ath6kl_diag_read(ar, address, 322 buf, length); 323 if (ret) 324 goto out; 325 326 ath6kl_debug_fwlog_event(ar, buf, length); 327 } 328 329 address = TARG_VTOP(ar->target_type, 330 le32_to_cpu(debug_buf.next)); 331 ret = ath6kl_diag_read(ar, address, &debug_buf, 332 sizeof(debug_buf)); 333 if (ret) 334 goto out; 335 336 loop--; 337 338 if (WARN_ON(loop == 0)) { 339 ret = -ETIMEDOUT; 340 goto out; 341 } 342 } while (address != firstbuf); 343 344 out: 345 kfree(buf); 346 347 return ret; 348 } 349 350 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 351 { 352 u8 index; 353 u8 keyusage; 354 355 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 356 if (vif->wep_key_list[index].key_len) { 357 keyusage = GROUP_USAGE; 358 if (index == vif->def_txkey_index) 359 keyusage |= TX_USAGE; 360 361 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 362 index, 363 WEP_CRYPT, 364 keyusage, 365 vif->wep_key_list[index].key_len, 366 NULL, 0, 367 vif->wep_key_list[index].key, 368 KEY_OP_INIT_VAL, NULL, 369 NO_SYNC_WMIFLAG); 370 } 371 } 372 } 373 374 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 375 { 376 struct ath6kl *ar = vif->ar; 377 struct ath6kl_req_key *ik; 378 int res; 379 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 380 381 ik = &ar->ap_mode_bkey; 382 383 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 384 385 switch (vif->auth_mode) { 386 case NONE_AUTH: 387 if (vif->prwise_crypto == WEP_CRYPT) 388 ath6kl_install_static_wep_keys(vif); 389 if (!ik->valid || ik->key_type != WAPI_CRYPT) 390 break; 391 /* for WAPI, we need to set the delayed group key, continue: */ 392 fallthrough; 393 case WPA_PSK_AUTH: 394 case WPA2_PSK_AUTH: 395 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 396 if (!ik->valid) 397 break; 398 399 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 400 "Delayed addkey for the initial group key for AP mode\n"); 401 memset(key_rsc, 0, sizeof(key_rsc)); 402 res = ath6kl_wmi_addkey_cmd( 403 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 404 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 405 ik->key, 406 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 407 if (res) { 408 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, 409 "Delayed addkey failed: %d\n", res); 410 } 411 break; 412 } 413 414 if (ar->last_ch != channel) 415 /* we actually don't know the phymode, default to HT20 */ 416 ath6kl_cfg80211_ch_switch_notify(vif, channel, WMI_11G_HT20); 417 418 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 419 set_bit(CONNECTED, &vif->flags); 420 netif_carrier_on(vif->ndev); 421 } 422 423 void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 424 u8 keymgmt, u8 ucipher, u8 auth, 425 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 426 { 427 u8 *ies = NULL, *wpa_ie = NULL, *pos; 428 size_t ies_len = 0; 429 struct station_info *sinfo; 430 431 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 432 433 if (aid < 1 || aid > AP_MAX_NUM_STA) 434 return; 435 436 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 437 struct ieee80211_mgmt *mgmt = 438 (struct ieee80211_mgmt *) assoc_info; 439 if (ieee80211_is_assoc_req(mgmt->frame_control) && 440 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 441 sizeof(mgmt->u.assoc_req)) { 442 ies = mgmt->u.assoc_req.variable; 443 ies_len = assoc_info + assoc_req_len - ies; 444 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 445 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 446 + sizeof(mgmt->u.reassoc_req)) { 447 ies = mgmt->u.reassoc_req.variable; 448 ies_len = assoc_info + assoc_req_len - ies; 449 } 450 } 451 452 pos = ies; 453 while (pos && pos + 1 < ies + ies_len) { 454 if (pos + 2 + pos[1] > ies + ies_len) 455 break; 456 if (pos[0] == WLAN_EID_RSN) 457 wpa_ie = pos; /* RSN IE */ 458 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 459 pos[1] >= 4 && 460 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 461 if (pos[5] == 0x01) 462 wpa_ie = pos; /* WPA IE */ 463 else if (pos[5] == 0x04) { 464 wpa_ie = pos; /* WPS IE */ 465 break; /* overrides WPA/RSN IE */ 466 } 467 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 468 /* 469 * Note: WAPI Parameter Set IE re-uses Element ID that 470 * was officially allocated for BSS AC Access Delay. As 471 * such, we need to be a bit more careful on when 472 * parsing the frame. However, BSS AC Access Delay 473 * element is not supposed to be included in 474 * (Re)Association Request frames, so this should not 475 * cause problems. 476 */ 477 wpa_ie = pos; /* WAPI IE */ 478 break; 479 } 480 pos += 2 + pos[1]; 481 } 482 483 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 484 wpa_ie ? 2 + wpa_ie[1] : 0, 485 keymgmt, ucipher, auth, apsd_info); 486 487 /* send event to application */ 488 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); 489 if (!sinfo) 490 return; 491 492 /* TODO: sinfo.generation */ 493 494 sinfo->assoc_req_ies = ies; 495 sinfo->assoc_req_ies_len = ies_len; 496 497 cfg80211_new_sta(vif->ndev, mac_addr, sinfo, GFP_KERNEL); 498 499 netif_wake_queue(vif->ndev); 500 501 kfree(sinfo); 502 } 503 504 void disconnect_timer_handler(struct timer_list *t) 505 { 506 struct ath6kl_vif *vif = from_timer(vif, t, disconnect_timer); 507 508 ath6kl_init_profile_info(vif); 509 ath6kl_disconnect(vif); 510 } 511 512 void ath6kl_disconnect(struct ath6kl_vif *vif) 513 { 514 if (test_bit(CONNECTED, &vif->flags) || 515 test_bit(CONNECT_PEND, &vif->flags)) { 516 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 517 /* 518 * Disconnect command is issued, clear the connect pending 519 * flag. The connected flag will be cleared in 520 * disconnect event notification. 521 */ 522 clear_bit(CONNECT_PEND, &vif->flags); 523 } 524 } 525 526 /* WMI Event handlers */ 527 528 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver, 529 enum wmi_phy_cap cap) 530 { 531 struct ath6kl *ar = devt; 532 533 memcpy(ar->mac_addr, datap, ETH_ALEN); 534 535 ath6kl_dbg(ATH6KL_DBG_BOOT, 536 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n", 537 ar->mac_addr, sw_ver, abi_ver, cap); 538 539 ar->version.wlan_ver = sw_ver; 540 ar->version.abi_ver = abi_ver; 541 ar->hw.cap = cap; 542 543 if (strlen(ar->wiphy->fw_version) == 0) { 544 snprintf(ar->wiphy->fw_version, 545 sizeof(ar->wiphy->fw_version), 546 "%u.%u.%u.%u", 547 (ar->version.wlan_ver & 0xf0000000) >> 28, 548 (ar->version.wlan_ver & 0x0f000000) >> 24, 549 (ar->version.wlan_ver & 0x00ff0000) >> 16, 550 (ar->version.wlan_ver & 0x0000ffff)); 551 } 552 553 /* indicate to the waiting thread that the ready event was received */ 554 set_bit(WMI_READY, &ar->flag); 555 wake_up(&ar->event_wq); 556 } 557 558 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 559 { 560 struct ath6kl *ar = vif->ar; 561 bool aborted = false; 562 563 if (status != WMI_SCAN_STATUS_SUCCESS) 564 aborted = true; 565 566 ath6kl_cfg80211_scan_complete_event(vif, aborted); 567 568 if (!ar->usr_bss_filter) { 569 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 570 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 571 NONE_BSS_FILTER, 0); 572 } 573 574 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 575 } 576 577 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel) 578 { 579 struct ath6kl *ar = vif->ar; 580 581 vif->profile.ch = cpu_to_le16(channel); 582 583 switch (vif->nw_type) { 584 case AP_NETWORK: 585 /* 586 * reconfigure any saved RSN IE capabilites in the beacon / 587 * probe response to stay in sync with the supplicant. 588 */ 589 if (vif->rsn_capab && 590 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 591 ar->fw_capabilities)) 592 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx, 593 WLAN_EID_RSN, WMI_RSN_IE_CAPB, 594 (const u8 *) &vif->rsn_capab, 595 sizeof(vif->rsn_capab)); 596 597 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, 598 &vif->profile); 599 default: 600 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type); 601 return -ENOTSUPP; 602 } 603 } 604 605 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel) 606 { 607 struct ath6kl_vif *vif; 608 int res = 0; 609 610 if (!ar->want_ch_switch) 611 return; 612 613 spin_lock_bh(&ar->list_lock); 614 list_for_each_entry(vif, &ar->vif_list, list) { 615 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) 616 res = ath6kl_commit_ch_switch(vif, channel); 617 618 /* if channel switch failed, oh well we tried */ 619 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx); 620 621 if (res) 622 ath6kl_err("channel switch failed nw_type %d res %d\n", 623 vif->nw_type, res); 624 } 625 spin_unlock_bh(&ar->list_lock); 626 } 627 628 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 629 u16 listen_int, u16 beacon_int, 630 enum network_type net_type, u8 beacon_ie_len, 631 u8 assoc_req_len, u8 assoc_resp_len, 632 u8 *assoc_info) 633 { 634 struct ath6kl *ar = vif->ar; 635 636 ath6kl_cfg80211_connect_event(vif, channel, bssid, 637 listen_int, beacon_int, 638 net_type, beacon_ie_len, 639 assoc_req_len, assoc_resp_len, 640 assoc_info); 641 642 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 643 vif->bss_ch = channel; 644 645 if (vif->nw_type == INFRA_NETWORK) { 646 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 647 vif->listen_intvl_t, 0); 648 ath6kl_check_ch_switch(ar, channel); 649 } 650 651 netif_wake_queue(vif->ndev); 652 653 /* Update connect & link status atomically */ 654 spin_lock_bh(&vif->if_lock); 655 set_bit(CONNECTED, &vif->flags); 656 clear_bit(CONNECT_PEND, &vif->flags); 657 netif_carrier_on(vif->ndev); 658 spin_unlock_bh(&vif->if_lock); 659 660 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 661 vif->reconnect_flag = 0; 662 663 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 664 memset(ar->node_map, 0, sizeof(ar->node_map)); 665 ar->node_num = 0; 666 ar->next_ep_id = ENDPOINT_2; 667 } 668 669 if (!ar->usr_bss_filter) { 670 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 671 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 672 CURRENT_BSS_FILTER, 0); 673 } 674 } 675 676 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 677 { 678 struct ath6kl_sta *sta; 679 struct ath6kl *ar = vif->ar; 680 u8 tsc[6]; 681 682 /* 683 * For AP case, keyid will have aid of STA which sent pkt with 684 * MIC error. Use this aid to get MAC & send it to hostapd. 685 */ 686 if (vif->nw_type == AP_NETWORK) { 687 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 688 if (!sta) 689 return; 690 691 ath6kl_dbg(ATH6KL_DBG_TRC, 692 "ap tkip mic error received from aid=%d\n", keyid); 693 694 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 695 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 696 NL80211_KEYTYPE_PAIRWISE, keyid, 697 tsc, GFP_KERNEL); 698 } else { 699 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 700 } 701 } 702 703 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 704 { 705 struct wmi_target_stats *tgt_stats = 706 (struct wmi_target_stats *) ptr; 707 struct ath6kl *ar = vif->ar; 708 struct target_stats *stats = &vif->target_stats; 709 struct tkip_ccmp_stats *ccmp_stats; 710 s32 rate; 711 u8 ac; 712 713 if (len < sizeof(*tgt_stats)) 714 return; 715 716 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 717 718 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 719 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 720 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 721 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 722 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 723 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 724 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 725 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 726 stats->tx_rts_success_cnt += 727 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 728 729 for (ac = 0; ac < WMM_NUM_AC; ac++) 730 stats->tx_pkt_per_ac[ac] += 731 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 732 733 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 734 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 735 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 736 stats->tx_mult_retry_cnt += 737 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 738 stats->tx_rts_fail_cnt += 739 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 740 741 rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate); 742 stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate); 743 744 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 745 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 746 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 747 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 748 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 749 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 750 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 751 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 752 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 753 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 754 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 755 stats->rx_key_cache_miss += 756 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 757 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 758 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 759 760 rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate); 761 stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate); 762 763 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 764 765 stats->tkip_local_mic_fail += 766 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 767 stats->tkip_cnter_measures_invoked += 768 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 769 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 770 771 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 772 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 773 774 stats->pwr_save_fail_cnt += 775 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 776 stats->noise_floor_calib = 777 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 778 779 stats->cs_bmiss_cnt += 780 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 781 stats->cs_low_rssi_cnt += 782 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 783 stats->cs_connect_cnt += 784 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 785 stats->cs_discon_cnt += 786 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 787 788 stats->cs_ave_beacon_rssi = 789 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 790 791 stats->cs_last_roam_msec = 792 tgt_stats->cserv_stats.cs_last_roam_msec; 793 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 794 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 795 796 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 797 798 stats->wow_pkt_dropped += 799 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 800 stats->wow_host_pkt_wakeups += 801 tgt_stats->wow_stats.wow_host_pkt_wakeups; 802 stats->wow_host_evt_wakeups += 803 tgt_stats->wow_stats.wow_host_evt_wakeups; 804 stats->wow_evt_discarded += 805 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 806 807 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 808 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 809 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 810 811 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 812 clear_bit(STATS_UPDATE_PEND, &vif->flags); 813 wake_up(&ar->event_wq); 814 } 815 } 816 817 static void ath6kl_add_le32(__le32 *var, __le32 val) 818 { 819 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 820 } 821 822 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 823 { 824 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 825 struct ath6kl *ar = vif->ar; 826 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 827 struct wmi_per_sta_stat *st_ap, *st_p; 828 u8 ac; 829 830 if (vif->nw_type == AP_NETWORK) { 831 if (len < sizeof(*p)) 832 return; 833 834 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 835 st_ap = &ap->sta[ac]; 836 st_p = &p->sta[ac]; 837 838 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 839 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 840 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 841 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 842 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 843 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 844 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 845 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 846 } 847 848 } else { 849 ath6kl_update_target_stats(vif, ptr, len); 850 } 851 } 852 853 void ath6kl_wakeup_event(void *dev) 854 { 855 struct ath6kl *ar = dev; 856 857 wake_up(&ar->event_wq); 858 } 859 860 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 861 { 862 struct ath6kl *ar = devt; 863 864 ar->tx_pwr = tx_pwr; 865 wake_up(&ar->event_wq); 866 } 867 868 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 869 { 870 struct ath6kl_sta *conn; 871 struct sk_buff *skb; 872 bool psq_empty = false; 873 struct ath6kl *ar = vif->ar; 874 struct ath6kl_mgmt_buff *mgmt_buf; 875 876 conn = ath6kl_find_sta_by_aid(ar, aid); 877 878 if (!conn) 879 return; 880 /* 881 * Send out a packet queued on ps queue. When the ps queue 882 * becomes empty update the PVB for this station. 883 */ 884 spin_lock_bh(&conn->psq_lock); 885 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 886 spin_unlock_bh(&conn->psq_lock); 887 888 if (psq_empty) 889 /* TODO: Send out a NULL data frame */ 890 return; 891 892 spin_lock_bh(&conn->psq_lock); 893 if (conn->mgmt_psq_len > 0) { 894 mgmt_buf = list_first_entry(&conn->mgmt_psq, 895 struct ath6kl_mgmt_buff, list); 896 list_del(&mgmt_buf->list); 897 conn->mgmt_psq_len--; 898 spin_unlock_bh(&conn->psq_lock); 899 900 conn->sta_flags |= STA_PS_POLLED; 901 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 902 mgmt_buf->id, mgmt_buf->freq, 903 mgmt_buf->wait, mgmt_buf->buf, 904 mgmt_buf->len, mgmt_buf->no_cck); 905 conn->sta_flags &= ~STA_PS_POLLED; 906 kfree(mgmt_buf); 907 } else { 908 skb = skb_dequeue(&conn->psq); 909 spin_unlock_bh(&conn->psq_lock); 910 911 conn->sta_flags |= STA_PS_POLLED; 912 ath6kl_data_tx(skb, vif->ndev); 913 conn->sta_flags &= ~STA_PS_POLLED; 914 } 915 916 spin_lock_bh(&conn->psq_lock); 917 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 918 spin_unlock_bh(&conn->psq_lock); 919 920 if (psq_empty) 921 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 922 } 923 924 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 925 { 926 bool mcastq_empty = false; 927 struct sk_buff *skb; 928 struct ath6kl *ar = vif->ar; 929 930 /* 931 * If there are no associated STAs, ignore the DTIM expiry event. 932 * There can be potential race conditions where the last associated 933 * STA may disconnect & before the host could clear the 'Indicate 934 * DTIM' request to the firmware, the firmware would have just 935 * indicated a DTIM expiry event. The race is between 'clear DTIM 936 * expiry cmd' going from the host to the firmware & the DTIM 937 * expiry event happening from the firmware to the host. 938 */ 939 if (!ar->sta_list_index) 940 return; 941 942 spin_lock_bh(&ar->mcastpsq_lock); 943 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 944 spin_unlock_bh(&ar->mcastpsq_lock); 945 946 if (mcastq_empty) 947 return; 948 949 /* set the STA flag to dtim_expired for the frame to go out */ 950 set_bit(DTIM_EXPIRED, &vif->flags); 951 952 spin_lock_bh(&ar->mcastpsq_lock); 953 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 954 spin_unlock_bh(&ar->mcastpsq_lock); 955 956 ath6kl_data_tx(skb, vif->ndev); 957 958 spin_lock_bh(&ar->mcastpsq_lock); 959 } 960 spin_unlock_bh(&ar->mcastpsq_lock); 961 962 clear_bit(DTIM_EXPIRED, &vif->flags); 963 964 /* clear the LSB of the BitMapCtl field of the TIM IE */ 965 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 966 } 967 968 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 969 u8 assoc_resp_len, u8 *assoc_info, 970 u16 prot_reason_status) 971 { 972 struct ath6kl *ar = vif->ar; 973 974 if (vif->nw_type == AP_NETWORK) { 975 /* disconnect due to other STA vif switching channels */ 976 if (reason == BSS_DISCONNECTED && 977 prot_reason_status == WMI_AP_REASON_STA_ROAM) { 978 ar->want_ch_switch |= 1 << vif->fw_vif_idx; 979 /* bail back to this channel if STA vif fails connect */ 980 ar->last_ch = le16_to_cpu(vif->profile.ch); 981 } 982 983 if (prot_reason_status == WMI_AP_REASON_MAX_STA) { 984 /* send max client reached notification to user space */ 985 cfg80211_conn_failed(vif->ndev, bssid, 986 NL80211_CONN_FAIL_MAX_CLIENTS, 987 GFP_KERNEL); 988 } 989 990 if (prot_reason_status == WMI_AP_REASON_ACL) { 991 /* send blocked client notification to user space */ 992 cfg80211_conn_failed(vif->ndev, bssid, 993 NL80211_CONN_FAIL_BLOCKED_CLIENT, 994 GFP_KERNEL); 995 } 996 997 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 998 return; 999 1000 /* if no more associated STAs, empty the mcast PS q */ 1001 if (ar->sta_list_index == 0) { 1002 spin_lock_bh(&ar->mcastpsq_lock); 1003 skb_queue_purge(&ar->mcastpsq); 1004 spin_unlock_bh(&ar->mcastpsq_lock); 1005 1006 /* clear the LSB of the TIM IE's BitMapCtl field */ 1007 if (test_bit(WMI_READY, &ar->flag)) 1008 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 1009 MCAST_AID, 0); 1010 } 1011 1012 if (!is_broadcast_ether_addr(bssid)) { 1013 /* send event to application */ 1014 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1015 } 1016 1017 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1018 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1019 clear_bit(CONNECTED, &vif->flags); 1020 } 1021 return; 1022 } 1023 1024 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1025 assoc_resp_len, assoc_info, 1026 prot_reason_status); 1027 1028 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 1029 1030 del_timer(&vif->disconnect_timer); 1031 1032 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1033 1034 /* 1035 * If the event is due to disconnect cmd from the host, only they 1036 * the target would stop trying to connect. Under any other 1037 * condition, target would keep trying to connect. 1038 */ 1039 if (reason == DISCONNECT_CMD) { 1040 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1041 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1042 NONE_BSS_FILTER, 0); 1043 } else { 1044 set_bit(CONNECT_PEND, &vif->flags); 1045 if (((reason == ASSOC_FAILED) && 1046 (prot_reason_status == 0x11)) || 1047 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 1048 (vif->reconnect_flag == 1))) { 1049 set_bit(CONNECTED, &vif->flags); 1050 return; 1051 } 1052 } 1053 1054 /* restart disconnected concurrent vifs waiting for new channel */ 1055 ath6kl_check_ch_switch(ar, ar->last_ch); 1056 1057 /* update connect & link status atomically */ 1058 spin_lock_bh(&vif->if_lock); 1059 clear_bit(CONNECTED, &vif->flags); 1060 netif_carrier_off(vif->ndev); 1061 spin_unlock_bh(&vif->if_lock); 1062 1063 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1064 vif->reconnect_flag = 0; 1065 1066 if (reason != CSERV_DISCONNECT) 1067 ar->user_key_ctrl = 0; 1068 1069 netif_stop_queue(vif->ndev); 1070 memset(vif->bssid, 0, sizeof(vif->bssid)); 1071 vif->bss_ch = 0; 1072 1073 ath6kl_tx_data_cleanup(ar); 1074 } 1075 1076 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1077 { 1078 struct ath6kl_vif *vif; 1079 1080 spin_lock_bh(&ar->list_lock); 1081 if (list_empty(&ar->vif_list)) { 1082 spin_unlock_bh(&ar->list_lock); 1083 return NULL; 1084 } 1085 1086 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1087 1088 spin_unlock_bh(&ar->list_lock); 1089 1090 return vif; 1091 } 1092 1093 static int ath6kl_open(struct net_device *dev) 1094 { 1095 struct ath6kl_vif *vif = netdev_priv(dev); 1096 1097 set_bit(WLAN_ENABLED, &vif->flags); 1098 1099 if (test_bit(CONNECTED, &vif->flags)) { 1100 netif_carrier_on(dev); 1101 netif_wake_queue(dev); 1102 } else { 1103 netif_carrier_off(dev); 1104 } 1105 1106 return 0; 1107 } 1108 1109 static int ath6kl_close(struct net_device *dev) 1110 { 1111 struct ath6kl_vif *vif = netdev_priv(dev); 1112 1113 netif_stop_queue(dev); 1114 1115 ath6kl_cfg80211_stop(vif); 1116 1117 clear_bit(WLAN_ENABLED, &vif->flags); 1118 1119 return 0; 1120 } 1121 1122 static int ath6kl_set_features(struct net_device *dev, 1123 netdev_features_t features) 1124 { 1125 struct ath6kl_vif *vif = netdev_priv(dev); 1126 struct ath6kl *ar = vif->ar; 1127 int err = 0; 1128 1129 if ((features & NETIF_F_RXCSUM) && 1130 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1131 ar->rx_meta_ver = WMI_META_VERSION_2; 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 } else if (!(features & NETIF_F_RXCSUM) && 1140 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1141 ar->rx_meta_ver = 0; 1142 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1143 vif->fw_vif_idx, 1144 ar->rx_meta_ver, 0, 0); 1145 if (err) { 1146 dev->features = features | NETIF_F_RXCSUM; 1147 return err; 1148 } 1149 } 1150 1151 return err; 1152 } 1153 1154 static void ath6kl_set_multicast_list(struct net_device *ndev) 1155 { 1156 struct ath6kl_vif *vif = netdev_priv(ndev); 1157 bool mc_all_on = false; 1158 int mc_count = netdev_mc_count(ndev); 1159 struct netdev_hw_addr *ha; 1160 bool found; 1161 struct ath6kl_mc_filter *mc_filter, *tmp; 1162 struct list_head mc_filter_new; 1163 int ret; 1164 1165 if (!test_bit(WMI_READY, &vif->ar->flag) || 1166 !test_bit(WLAN_ENABLED, &vif->flags)) 1167 return; 1168 1169 /* Enable multicast-all filter. */ 1170 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1171 !!(ndev->flags & IFF_ALLMULTI) || 1172 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1173 1174 if (mc_all_on) 1175 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1176 else 1177 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1178 1179 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 1180 vif->ar->fw_capabilities)) { 1181 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON); 1182 } 1183 1184 if (!(ndev->flags & IFF_MULTICAST)) { 1185 mc_all_on = false; 1186 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1187 } else { 1188 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1189 } 1190 1191 /* Enable/disable "multicast-all" filter*/ 1192 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n", 1193 mc_all_on ? "enabling" : "disabling"); 1194 1195 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1196 mc_all_on); 1197 if (ret) { 1198 ath6kl_warn("Failed to %s multicast-all receive\n", 1199 mc_all_on ? "enable" : "disable"); 1200 return; 1201 } 1202 1203 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) 1204 return; 1205 1206 /* Keep the driver and firmware mcast list in sync. */ 1207 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1208 found = false; 1209 netdev_for_each_mc_addr(ha, ndev) { 1210 if (memcmp(ha->addr, mc_filter->hw_addr, 1211 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1212 found = true; 1213 break; 1214 } 1215 } 1216 1217 if (!found) { 1218 /* 1219 * Delete the filter which was previously set 1220 * but not in the new request. 1221 */ 1222 ath6kl_dbg(ATH6KL_DBG_TRC, 1223 "Removing %pM from multicast filter\n", 1224 mc_filter->hw_addr); 1225 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1226 vif->fw_vif_idx, mc_filter->hw_addr, 1227 false); 1228 if (ret) { 1229 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1230 mc_filter->hw_addr); 1231 return; 1232 } 1233 1234 list_del(&mc_filter->list); 1235 kfree(mc_filter); 1236 } 1237 } 1238 1239 INIT_LIST_HEAD(&mc_filter_new); 1240 1241 netdev_for_each_mc_addr(ha, ndev) { 1242 found = false; 1243 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1244 if (memcmp(ha->addr, mc_filter->hw_addr, 1245 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1246 found = true; 1247 break; 1248 } 1249 } 1250 1251 if (!found) { 1252 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1253 GFP_ATOMIC); 1254 if (!mc_filter) { 1255 WARN_ON(1); 1256 goto out; 1257 } 1258 1259 memcpy(mc_filter->hw_addr, ha->addr, 1260 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1261 /* Set the multicast filter */ 1262 ath6kl_dbg(ATH6KL_DBG_TRC, 1263 "Adding %pM to multicast filter list\n", 1264 mc_filter->hw_addr); 1265 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1266 vif->fw_vif_idx, mc_filter->hw_addr, 1267 true); 1268 if (ret) { 1269 ath6kl_warn("Failed to add multicast filter :%pM\n", 1270 mc_filter->hw_addr); 1271 kfree(mc_filter); 1272 goto out; 1273 } 1274 1275 list_add_tail(&mc_filter->list, &mc_filter_new); 1276 } 1277 } 1278 1279 out: 1280 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1281 } 1282 1283 static const struct net_device_ops ath6kl_netdev_ops = { 1284 .ndo_open = ath6kl_open, 1285 .ndo_stop = ath6kl_close, 1286 .ndo_start_xmit = ath6kl_data_tx, 1287 .ndo_set_features = ath6kl_set_features, 1288 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1289 }; 1290 1291 void init_netdev(struct net_device *dev) 1292 { 1293 struct ath6kl *ar = ath6kl_priv(dev); 1294 1295 dev->netdev_ops = &ath6kl_netdev_ops; 1296 dev->needs_free_netdev = true; 1297 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1298 1299 dev->needed_headroom = ETH_HLEN; 1300 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) + 1301 sizeof(struct wmi_data_hdr) + 1302 HTC_HDR_LENGTH + 1303 WMI_MAX_TX_META_SZ + 1304 ATH6KL_HTC_ALIGN_BYTES, 4); 1305 1306 if (!test_bit(ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM, 1307 ar->fw_capabilities)) 1308 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1309 1310 return; 1311 } 1312