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 memset(sta->mac, 0, ETH_ALEN); 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, dropped, 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 dropped = le32_to_cpu(debug_hdr.dropped); 307 ret = ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 308 if (ret) 309 goto out; 310 311 loop = 100; 312 313 do { 314 address = TARG_VTOP(ar->target_type, 315 le32_to_cpu(debug_buf.buffer_addr)); 316 length = le32_to_cpu(debug_buf.length); 317 318 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 319 le32_to_cpu(debug_buf.bufsize))) { 320 length = ALIGN(length, 4); 321 322 ret = ath6kl_diag_read(ar, address, 323 buf, length); 324 if (ret) 325 goto out; 326 327 ath6kl_debug_fwlog_event(ar, buf, length); 328 } 329 330 address = TARG_VTOP(ar->target_type, 331 le32_to_cpu(debug_buf.next)); 332 ret = ath6kl_diag_read(ar, address, &debug_buf, 333 sizeof(debug_buf)); 334 if (ret) 335 goto out; 336 337 loop--; 338 339 if (WARN_ON(loop == 0)) { 340 ret = -ETIMEDOUT; 341 goto out; 342 } 343 } while (address != firstbuf); 344 345 out: 346 kfree(buf); 347 348 return ret; 349 } 350 351 static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 352 { 353 u8 index; 354 u8 keyusage; 355 356 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 357 if (vif->wep_key_list[index].key_len) { 358 keyusage = GROUP_USAGE; 359 if (index == vif->def_txkey_index) 360 keyusage |= TX_USAGE; 361 362 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 363 index, 364 WEP_CRYPT, 365 keyusage, 366 vif->wep_key_list[index].key_len, 367 NULL, 0, 368 vif->wep_key_list[index].key, 369 KEY_OP_INIT_VAL, NULL, 370 NO_SYNC_WMIFLAG); 371 } 372 } 373 } 374 375 void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 376 { 377 struct ath6kl *ar = vif->ar; 378 struct ath6kl_req_key *ik; 379 int res; 380 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 381 382 ik = &ar->ap_mode_bkey; 383 384 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 385 386 switch (vif->auth_mode) { 387 case NONE_AUTH: 388 if (vif->prwise_crypto == WEP_CRYPT) 389 ath6kl_install_static_wep_keys(vif); 390 if (!ik->valid || ik->key_type != WAPI_CRYPT) 391 break; 392 /* for WAPI, we need to set the delayed group key, continue: */ 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 (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 434 struct ieee80211_mgmt *mgmt = 435 (struct ieee80211_mgmt *) assoc_info; 436 if (ieee80211_is_assoc_req(mgmt->frame_control) && 437 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 438 sizeof(mgmt->u.assoc_req)) { 439 ies = mgmt->u.assoc_req.variable; 440 ies_len = assoc_info + assoc_req_len - ies; 441 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 442 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 443 + sizeof(mgmt->u.reassoc_req)) { 444 ies = mgmt->u.reassoc_req.variable; 445 ies_len = assoc_info + assoc_req_len - ies; 446 } 447 } 448 449 pos = ies; 450 while (pos && pos + 1 < ies + ies_len) { 451 if (pos + 2 + pos[1] > ies + ies_len) 452 break; 453 if (pos[0] == WLAN_EID_RSN) 454 wpa_ie = pos; /* RSN IE */ 455 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 456 pos[1] >= 4 && 457 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 458 if (pos[5] == 0x01) 459 wpa_ie = pos; /* WPA IE */ 460 else if (pos[5] == 0x04) { 461 wpa_ie = pos; /* WPS IE */ 462 break; /* overrides WPA/RSN IE */ 463 } 464 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 465 /* 466 * Note: WAPI Parameter Set IE re-uses Element ID that 467 * was officially allocated for BSS AC Access Delay. As 468 * such, we need to be a bit more careful on when 469 * parsing the frame. However, BSS AC Access Delay 470 * element is not supposed to be included in 471 * (Re)Association Request frames, so this should not 472 * cause problems. 473 */ 474 wpa_ie = pos; /* WAPI IE */ 475 break; 476 } 477 pos += 2 + pos[1]; 478 } 479 480 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 481 wpa_ie ? 2 + wpa_ie[1] : 0, 482 keymgmt, ucipher, auth, apsd_info); 483 484 /* send event to application */ 485 memset(&sinfo, 0, sizeof(sinfo)); 486 487 /* TODO: sinfo.generation */ 488 489 sinfo.assoc_req_ies = ies; 490 sinfo.assoc_req_ies_len = ies_len; 491 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 492 493 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 494 495 netif_wake_queue(vif->ndev); 496 } 497 498 void disconnect_timer_handler(unsigned long ptr) 499 { 500 struct net_device *dev = (struct net_device *)ptr; 501 struct ath6kl_vif *vif = netdev_priv(dev); 502 503 ath6kl_init_profile_info(vif); 504 ath6kl_disconnect(vif); 505 } 506 507 void ath6kl_disconnect(struct ath6kl_vif *vif) 508 { 509 if (test_bit(CONNECTED, &vif->flags) || 510 test_bit(CONNECT_PEND, &vif->flags)) { 511 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 512 /* 513 * Disconnect command is issued, clear the connect pending 514 * flag. The connected flag will be cleared in 515 * disconnect event notification. 516 */ 517 clear_bit(CONNECT_PEND, &vif->flags); 518 } 519 } 520 521 /* WMI Event handlers */ 522 523 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver, 524 enum wmi_phy_cap cap) 525 { 526 struct ath6kl *ar = devt; 527 528 memcpy(ar->mac_addr, datap, ETH_ALEN); 529 530 ath6kl_dbg(ATH6KL_DBG_BOOT, 531 "ready event mac addr %pM sw_ver 0x%x abi_ver 0x%x cap 0x%x\n", 532 ar->mac_addr, sw_ver, abi_ver, cap); 533 534 ar->version.wlan_ver = sw_ver; 535 ar->version.abi_ver = abi_ver; 536 ar->hw.cap = cap; 537 538 if (strlen(ar->wiphy->fw_version) == 0) { 539 snprintf(ar->wiphy->fw_version, 540 sizeof(ar->wiphy->fw_version), 541 "%u.%u.%u.%u", 542 (ar->version.wlan_ver & 0xf0000000) >> 28, 543 (ar->version.wlan_ver & 0x0f000000) >> 24, 544 (ar->version.wlan_ver & 0x00ff0000) >> 16, 545 (ar->version.wlan_ver & 0x0000ffff)); 546 } 547 548 /* indicate to the waiting thread that the ready event was received */ 549 set_bit(WMI_READY, &ar->flag); 550 wake_up(&ar->event_wq); 551 } 552 553 void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 554 { 555 struct ath6kl *ar = vif->ar; 556 bool aborted = false; 557 558 if (status != WMI_SCAN_STATUS_SUCCESS) 559 aborted = true; 560 561 ath6kl_cfg80211_scan_complete_event(vif, aborted); 562 563 if (!ar->usr_bss_filter) { 564 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 565 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 566 NONE_BSS_FILTER, 0); 567 } 568 569 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 570 } 571 572 static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel) 573 { 574 struct ath6kl *ar = vif->ar; 575 576 vif->profile.ch = cpu_to_le16(channel); 577 578 switch (vif->nw_type) { 579 case AP_NETWORK: 580 /* 581 * reconfigure any saved RSN IE capabilites in the beacon / 582 * probe response to stay in sync with the supplicant. 583 */ 584 if (vif->rsn_capab && 585 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, 586 ar->fw_capabilities)) 587 ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx, 588 WLAN_EID_RSN, WMI_RSN_IE_CAPB, 589 (const u8 *) &vif->rsn_capab, 590 sizeof(vif->rsn_capab)); 591 592 return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, 593 &vif->profile); 594 default: 595 ath6kl_err("won't switch channels nw_type=%d\n", vif->nw_type); 596 return -ENOTSUPP; 597 } 598 } 599 600 static void ath6kl_check_ch_switch(struct ath6kl *ar, u16 channel) 601 { 602 struct ath6kl_vif *vif; 603 int res = 0; 604 605 if (!ar->want_ch_switch) 606 return; 607 608 spin_lock_bh(&ar->list_lock); 609 list_for_each_entry(vif, &ar->vif_list, list) { 610 if (ar->want_ch_switch & (1 << vif->fw_vif_idx)) 611 res = ath6kl_commit_ch_switch(vif, channel); 612 613 /* if channel switch failed, oh well we tried */ 614 ar->want_ch_switch &= ~(1 << vif->fw_vif_idx); 615 616 if (res) 617 ath6kl_err("channel switch failed nw_type %d res %d\n", 618 vif->nw_type, res); 619 } 620 spin_unlock_bh(&ar->list_lock); 621 } 622 623 void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 624 u16 listen_int, u16 beacon_int, 625 enum network_type net_type, u8 beacon_ie_len, 626 u8 assoc_req_len, u8 assoc_resp_len, 627 u8 *assoc_info) 628 { 629 struct ath6kl *ar = vif->ar; 630 631 ath6kl_cfg80211_connect_event(vif, channel, bssid, 632 listen_int, beacon_int, 633 net_type, beacon_ie_len, 634 assoc_req_len, assoc_resp_len, 635 assoc_info); 636 637 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 638 vif->bss_ch = channel; 639 640 if ((vif->nw_type == INFRA_NETWORK)) { 641 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 642 vif->listen_intvl_t, 0); 643 ath6kl_check_ch_switch(ar, channel); 644 } 645 646 netif_wake_queue(vif->ndev); 647 648 /* Update connect & link status atomically */ 649 spin_lock_bh(&vif->if_lock); 650 set_bit(CONNECTED, &vif->flags); 651 clear_bit(CONNECT_PEND, &vif->flags); 652 netif_carrier_on(vif->ndev); 653 spin_unlock_bh(&vif->if_lock); 654 655 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 656 vif->reconnect_flag = 0; 657 658 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 659 memset(ar->node_map, 0, sizeof(ar->node_map)); 660 ar->node_num = 0; 661 ar->next_ep_id = ENDPOINT_2; 662 } 663 664 if (!ar->usr_bss_filter) { 665 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 666 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 667 CURRENT_BSS_FILTER, 0); 668 } 669 } 670 671 void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 672 { 673 struct ath6kl_sta *sta; 674 struct ath6kl *ar = vif->ar; 675 u8 tsc[6]; 676 677 /* 678 * For AP case, keyid will have aid of STA which sent pkt with 679 * MIC error. Use this aid to get MAC & send it to hostapd. 680 */ 681 if (vif->nw_type == AP_NETWORK) { 682 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 683 if (!sta) 684 return; 685 686 ath6kl_dbg(ATH6KL_DBG_TRC, 687 "ap tkip mic error received from aid=%d\n", keyid); 688 689 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 690 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 691 NL80211_KEYTYPE_PAIRWISE, keyid, 692 tsc, GFP_KERNEL); 693 } else { 694 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 695 } 696 } 697 698 static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 699 { 700 struct wmi_target_stats *tgt_stats = 701 (struct wmi_target_stats *) ptr; 702 struct ath6kl *ar = vif->ar; 703 struct target_stats *stats = &vif->target_stats; 704 struct tkip_ccmp_stats *ccmp_stats; 705 s32 rate; 706 u8 ac; 707 708 if (len < sizeof(*tgt_stats)) 709 return; 710 711 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 712 713 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 714 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 715 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 716 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 717 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 718 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 719 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 720 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 721 stats->tx_rts_success_cnt += 722 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 723 724 for (ac = 0; ac < WMM_NUM_AC; ac++) 725 stats->tx_pkt_per_ac[ac] += 726 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 727 728 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 729 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 730 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 731 stats->tx_mult_retry_cnt += 732 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 733 stats->tx_rts_fail_cnt += 734 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 735 736 rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate); 737 stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate); 738 739 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 740 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 741 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 742 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 743 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 744 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 745 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 746 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 747 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 748 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 749 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 750 stats->rx_key_cache_miss += 751 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 752 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 753 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 754 755 rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate); 756 stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate); 757 758 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 759 760 stats->tkip_local_mic_fail += 761 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 762 stats->tkip_cnter_measures_invoked += 763 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 764 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 765 766 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 767 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 768 769 stats->pwr_save_fail_cnt += 770 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 771 stats->noise_floor_calib = 772 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 773 774 stats->cs_bmiss_cnt += 775 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 776 stats->cs_low_rssi_cnt += 777 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 778 stats->cs_connect_cnt += 779 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 780 stats->cs_discon_cnt += 781 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 782 783 stats->cs_ave_beacon_rssi = 784 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 785 786 stats->cs_last_roam_msec = 787 tgt_stats->cserv_stats.cs_last_roam_msec; 788 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 789 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 790 791 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 792 793 stats->wow_pkt_dropped += 794 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 795 stats->wow_host_pkt_wakeups += 796 tgt_stats->wow_stats.wow_host_pkt_wakeups; 797 stats->wow_host_evt_wakeups += 798 tgt_stats->wow_stats.wow_host_evt_wakeups; 799 stats->wow_evt_discarded += 800 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 801 802 stats->arp_received = le32_to_cpu(tgt_stats->arp_stats.arp_received); 803 stats->arp_replied = le32_to_cpu(tgt_stats->arp_stats.arp_replied); 804 stats->arp_matched = le32_to_cpu(tgt_stats->arp_stats.arp_matched); 805 806 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 807 clear_bit(STATS_UPDATE_PEND, &vif->flags); 808 wake_up(&ar->event_wq); 809 } 810 } 811 812 static void ath6kl_add_le32(__le32 *var, __le32 val) 813 { 814 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 815 } 816 817 void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 818 { 819 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 820 struct ath6kl *ar = vif->ar; 821 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 822 struct wmi_per_sta_stat *st_ap, *st_p; 823 u8 ac; 824 825 if (vif->nw_type == AP_NETWORK) { 826 if (len < sizeof(*p)) 827 return; 828 829 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 830 st_ap = &ap->sta[ac]; 831 st_p = &p->sta[ac]; 832 833 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 834 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 835 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 836 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 837 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 838 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 839 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 840 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 841 } 842 843 } else { 844 ath6kl_update_target_stats(vif, ptr, len); 845 } 846 } 847 848 void ath6kl_wakeup_event(void *dev) 849 { 850 struct ath6kl *ar = (struct ath6kl *) dev; 851 852 wake_up(&ar->event_wq); 853 } 854 855 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 856 { 857 struct ath6kl *ar = (struct ath6kl *) devt; 858 859 ar->tx_pwr = tx_pwr; 860 wake_up(&ar->event_wq); 861 } 862 863 void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 864 { 865 struct ath6kl_sta *conn; 866 struct sk_buff *skb; 867 bool psq_empty = false; 868 struct ath6kl *ar = vif->ar; 869 struct ath6kl_mgmt_buff *mgmt_buf; 870 871 conn = ath6kl_find_sta_by_aid(ar, aid); 872 873 if (!conn) 874 return; 875 /* 876 * Send out a packet queued on ps queue. When the ps queue 877 * becomes empty update the PVB for this station. 878 */ 879 spin_lock_bh(&conn->psq_lock); 880 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 881 spin_unlock_bh(&conn->psq_lock); 882 883 if (psq_empty) 884 /* TODO: Send out a NULL data frame */ 885 return; 886 887 spin_lock_bh(&conn->psq_lock); 888 if (conn->mgmt_psq_len > 0) { 889 mgmt_buf = list_first_entry(&conn->mgmt_psq, 890 struct ath6kl_mgmt_buff, list); 891 list_del(&mgmt_buf->list); 892 conn->mgmt_psq_len--; 893 spin_unlock_bh(&conn->psq_lock); 894 895 conn->sta_flags |= STA_PS_POLLED; 896 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 897 mgmt_buf->id, mgmt_buf->freq, 898 mgmt_buf->wait, mgmt_buf->buf, 899 mgmt_buf->len, mgmt_buf->no_cck); 900 conn->sta_flags &= ~STA_PS_POLLED; 901 kfree(mgmt_buf); 902 } else { 903 skb = skb_dequeue(&conn->psq); 904 spin_unlock_bh(&conn->psq_lock); 905 906 conn->sta_flags |= STA_PS_POLLED; 907 ath6kl_data_tx(skb, vif->ndev); 908 conn->sta_flags &= ~STA_PS_POLLED; 909 } 910 911 spin_lock_bh(&conn->psq_lock); 912 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 913 spin_unlock_bh(&conn->psq_lock); 914 915 if (psq_empty) 916 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 917 } 918 919 void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 920 { 921 bool mcastq_empty = false; 922 struct sk_buff *skb; 923 struct ath6kl *ar = vif->ar; 924 925 /* 926 * If there are no associated STAs, ignore the DTIM expiry event. 927 * There can be potential race conditions where the last associated 928 * STA may disconnect & before the host could clear the 'Indicate 929 * DTIM' request to the firmware, the firmware would have just 930 * indicated a DTIM expiry event. The race is between 'clear DTIM 931 * expiry cmd' going from the host to the firmware & the DTIM 932 * expiry event happening from the firmware to the host. 933 */ 934 if (!ar->sta_list_index) 935 return; 936 937 spin_lock_bh(&ar->mcastpsq_lock); 938 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 939 spin_unlock_bh(&ar->mcastpsq_lock); 940 941 if (mcastq_empty) 942 return; 943 944 /* set the STA flag to dtim_expired for the frame to go out */ 945 set_bit(DTIM_EXPIRED, &vif->flags); 946 947 spin_lock_bh(&ar->mcastpsq_lock); 948 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 949 spin_unlock_bh(&ar->mcastpsq_lock); 950 951 ath6kl_data_tx(skb, vif->ndev); 952 953 spin_lock_bh(&ar->mcastpsq_lock); 954 } 955 spin_unlock_bh(&ar->mcastpsq_lock); 956 957 clear_bit(DTIM_EXPIRED, &vif->flags); 958 959 /* clear the LSB of the BitMapCtl field of the TIM IE */ 960 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 961 } 962 963 void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 964 u8 assoc_resp_len, u8 *assoc_info, 965 u16 prot_reason_status) 966 { 967 struct ath6kl *ar = vif->ar; 968 969 if (vif->nw_type == AP_NETWORK) { 970 /* disconnect due to other STA vif switching channels */ 971 if (reason == BSS_DISCONNECTED && 972 prot_reason_status == WMI_AP_REASON_STA_ROAM) { 973 ar->want_ch_switch |= 1 << vif->fw_vif_idx; 974 /* bail back to this channel if STA vif fails connect */ 975 ar->last_ch = le16_to_cpu(vif->profile.ch); 976 } 977 978 if (prot_reason_status == WMI_AP_REASON_MAX_STA) { 979 /* send max client reached notification to user space */ 980 cfg80211_conn_failed(vif->ndev, bssid, 981 NL80211_CONN_FAIL_MAX_CLIENTS, 982 GFP_KERNEL); 983 } 984 985 if (prot_reason_status == WMI_AP_REASON_ACL) { 986 /* send blocked client notification to user space */ 987 cfg80211_conn_failed(vif->ndev, bssid, 988 NL80211_CONN_FAIL_BLOCKED_CLIENT, 989 GFP_KERNEL); 990 } 991 992 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 993 return; 994 995 /* if no more associated STAs, empty the mcast PS q */ 996 if (ar->sta_list_index == 0) { 997 spin_lock_bh(&ar->mcastpsq_lock); 998 skb_queue_purge(&ar->mcastpsq); 999 spin_unlock_bh(&ar->mcastpsq_lock); 1000 1001 /* clear the LSB of the TIM IE's BitMapCtl field */ 1002 if (test_bit(WMI_READY, &ar->flag)) 1003 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 1004 MCAST_AID, 0); 1005 } 1006 1007 if (!is_broadcast_ether_addr(bssid)) { 1008 /* send event to application */ 1009 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1010 } 1011 1012 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1013 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1014 clear_bit(CONNECTED, &vif->flags); 1015 } 1016 return; 1017 } 1018 1019 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1020 assoc_resp_len, assoc_info, 1021 prot_reason_status); 1022 1023 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 1024 1025 del_timer(&vif->disconnect_timer); 1026 1027 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 1028 1029 /* 1030 * If the event is due to disconnect cmd from the host, only they 1031 * the target would stop trying to connect. Under any other 1032 * condition, target would keep trying to connect. 1033 */ 1034 if (reason == DISCONNECT_CMD) { 1035 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1036 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1037 NONE_BSS_FILTER, 0); 1038 } else { 1039 set_bit(CONNECT_PEND, &vif->flags); 1040 if (((reason == ASSOC_FAILED) && 1041 (prot_reason_status == 0x11)) || 1042 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) && 1043 (vif->reconnect_flag == 1))) { 1044 set_bit(CONNECTED, &vif->flags); 1045 return; 1046 } 1047 } 1048 1049 /* restart disconnected concurrent vifs waiting for new channel */ 1050 ath6kl_check_ch_switch(ar, ar->last_ch); 1051 1052 /* update connect & link status atomically */ 1053 spin_lock_bh(&vif->if_lock); 1054 clear_bit(CONNECTED, &vif->flags); 1055 netif_carrier_off(vif->ndev); 1056 spin_unlock_bh(&vif->if_lock); 1057 1058 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1059 vif->reconnect_flag = 0; 1060 1061 if (reason != CSERV_DISCONNECT) 1062 ar->user_key_ctrl = 0; 1063 1064 netif_stop_queue(vif->ndev); 1065 memset(vif->bssid, 0, sizeof(vif->bssid)); 1066 vif->bss_ch = 0; 1067 1068 ath6kl_tx_data_cleanup(ar); 1069 } 1070 1071 struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1072 { 1073 struct ath6kl_vif *vif; 1074 1075 spin_lock_bh(&ar->list_lock); 1076 if (list_empty(&ar->vif_list)) { 1077 spin_unlock_bh(&ar->list_lock); 1078 return NULL; 1079 } 1080 1081 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1082 1083 spin_unlock_bh(&ar->list_lock); 1084 1085 return vif; 1086 } 1087 1088 static int ath6kl_open(struct net_device *dev) 1089 { 1090 struct ath6kl_vif *vif = netdev_priv(dev); 1091 1092 set_bit(WLAN_ENABLED, &vif->flags); 1093 1094 if (test_bit(CONNECTED, &vif->flags)) { 1095 netif_carrier_on(dev); 1096 netif_wake_queue(dev); 1097 } else { 1098 netif_carrier_off(dev); 1099 } 1100 1101 return 0; 1102 } 1103 1104 static int ath6kl_close(struct net_device *dev) 1105 { 1106 struct ath6kl_vif *vif = netdev_priv(dev); 1107 1108 netif_stop_queue(dev); 1109 1110 ath6kl_cfg80211_stop(vif); 1111 1112 clear_bit(WLAN_ENABLED, &vif->flags); 1113 1114 return 0; 1115 } 1116 1117 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1118 { 1119 struct ath6kl_vif *vif = netdev_priv(dev); 1120 1121 return &vif->net_stats; 1122 } 1123 1124 static int ath6kl_set_features(struct net_device *dev, 1125 netdev_features_t features) 1126 { 1127 struct ath6kl_vif *vif = netdev_priv(dev); 1128 struct ath6kl *ar = vif->ar; 1129 int err = 0; 1130 1131 if ((features & NETIF_F_RXCSUM) && 1132 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1133 ar->rx_meta_ver = WMI_META_VERSION_2; 1134 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1135 vif->fw_vif_idx, 1136 ar->rx_meta_ver, 0, 0); 1137 if (err) { 1138 dev->features = features & ~NETIF_F_RXCSUM; 1139 return err; 1140 } 1141 } else if (!(features & NETIF_F_RXCSUM) && 1142 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1143 ar->rx_meta_ver = 0; 1144 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1145 vif->fw_vif_idx, 1146 ar->rx_meta_ver, 0, 0); 1147 if (err) { 1148 dev->features = features | NETIF_F_RXCSUM; 1149 return err; 1150 } 1151 } 1152 1153 return err; 1154 } 1155 1156 static void ath6kl_set_multicast_list(struct net_device *ndev) 1157 { 1158 struct ath6kl_vif *vif = netdev_priv(ndev); 1159 bool mc_all_on = false; 1160 int mc_count = netdev_mc_count(ndev); 1161 struct netdev_hw_addr *ha; 1162 bool found; 1163 struct ath6kl_mc_filter *mc_filter, *tmp; 1164 struct list_head mc_filter_new; 1165 int ret; 1166 1167 if (!test_bit(WMI_READY, &vif->ar->flag) || 1168 !test_bit(WLAN_ENABLED, &vif->flags)) 1169 return; 1170 1171 /* Enable multicast-all filter. */ 1172 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1173 !!(ndev->flags & IFF_ALLMULTI) || 1174 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1175 1176 if (mc_all_on) 1177 set_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1178 else 1179 clear_bit(NETDEV_MCAST_ALL_ON, &vif->flags); 1180 1181 if (test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, 1182 vif->ar->fw_capabilities)) { 1183 mc_all_on = mc_all_on || (vif->ar->state == ATH6KL_STATE_ON); 1184 } 1185 1186 if (!(ndev->flags & IFF_MULTICAST)) { 1187 mc_all_on = false; 1188 set_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1189 } else { 1190 clear_bit(NETDEV_MCAST_ALL_OFF, &vif->flags); 1191 } 1192 1193 /* Enable/disable "multicast-all" filter*/ 1194 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast-all filter\n", 1195 mc_all_on ? "enabling" : "disabling"); 1196 1197 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1198 mc_all_on); 1199 if (ret) { 1200 ath6kl_warn("Failed to %s multicast-all receive\n", 1201 mc_all_on ? "enable" : "disable"); 1202 return; 1203 } 1204 1205 if (test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) 1206 return; 1207 1208 /* Keep the driver and firmware mcast list in sync. */ 1209 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1210 found = false; 1211 netdev_for_each_mc_addr(ha, ndev) { 1212 if (memcmp(ha->addr, mc_filter->hw_addr, 1213 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1214 found = true; 1215 break; 1216 } 1217 } 1218 1219 if (!found) { 1220 /* 1221 * Delete the filter which was previously set 1222 * but not in the new request. 1223 */ 1224 ath6kl_dbg(ATH6KL_DBG_TRC, 1225 "Removing %pM from multicast filter\n", 1226 mc_filter->hw_addr); 1227 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1228 vif->fw_vif_idx, mc_filter->hw_addr, 1229 false); 1230 if (ret) { 1231 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1232 mc_filter->hw_addr); 1233 return; 1234 } 1235 1236 list_del(&mc_filter->list); 1237 kfree(mc_filter); 1238 } 1239 } 1240 1241 INIT_LIST_HEAD(&mc_filter_new); 1242 1243 netdev_for_each_mc_addr(ha, ndev) { 1244 found = false; 1245 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1246 if (memcmp(ha->addr, mc_filter->hw_addr, 1247 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1248 found = true; 1249 break; 1250 } 1251 } 1252 1253 if (!found) { 1254 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1255 GFP_ATOMIC); 1256 if (!mc_filter) { 1257 WARN_ON(1); 1258 goto out; 1259 } 1260 1261 memcpy(mc_filter->hw_addr, ha->addr, 1262 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1263 /* Set the multicast filter */ 1264 ath6kl_dbg(ATH6KL_DBG_TRC, 1265 "Adding %pM to multicast filter list\n", 1266 mc_filter->hw_addr); 1267 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1268 vif->fw_vif_idx, mc_filter->hw_addr, 1269 true); 1270 if (ret) { 1271 ath6kl_warn("Failed to add multicast filter :%pM\n", 1272 mc_filter->hw_addr); 1273 kfree(mc_filter); 1274 goto out; 1275 } 1276 1277 list_add_tail(&mc_filter->list, &mc_filter_new); 1278 } 1279 } 1280 1281 out: 1282 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1283 } 1284 1285 static const struct net_device_ops ath6kl_netdev_ops = { 1286 .ndo_open = ath6kl_open, 1287 .ndo_stop = ath6kl_close, 1288 .ndo_start_xmit = ath6kl_data_tx, 1289 .ndo_get_stats = ath6kl_get_stats, 1290 .ndo_set_features = ath6kl_set_features, 1291 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1292 }; 1293 1294 void init_netdev(struct net_device *dev) 1295 { 1296 struct ath6kl *ar = ath6kl_priv(dev); 1297 1298 dev->netdev_ops = &ath6kl_netdev_ops; 1299 dev->destructor = free_netdev; 1300 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1301 1302 dev->needed_headroom = ETH_HLEN; 1303 dev->needed_headroom += roundup(sizeof(struct ath6kl_llc_snap_hdr) + 1304 sizeof(struct wmi_data_hdr) + 1305 HTC_HDR_LENGTH + 1306 WMI_MAX_TX_META_SZ + 1307 ATH6KL_HTC_ALIGN_BYTES, 4); 1308 1309 if (!test_bit(ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM, 1310 ar->fw_capabilities)) 1311 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1312 1313 return; 1314 } 1315