main.c revision 8f46fccd6cd0d7ba70ba1636e59e98ca17dd2239
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#include "core.h" 19#include "hif-ops.h" 20#include "cfg80211.h" 21#include "target.h" 22#include "debug.h" 23 24struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 *node_addr) 25{ 26 struct ath6kl *ar = vif->ar; 27 struct ath6kl_sta *conn = NULL; 28 u8 i, max_conn; 29 30 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 31 32 for (i = 0; i < max_conn; i++) { 33 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 34 conn = &ar->sta_list[i]; 35 break; 36 } 37 } 38 39 return conn; 40} 41 42struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 43{ 44 struct ath6kl_sta *conn = NULL; 45 u8 ctr; 46 47 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 48 if (ar->sta_list[ctr].aid == aid) { 49 conn = &ar->sta_list[ctr]; 50 break; 51 } 52 } 53 return conn; 54} 55 56static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid, 57 u8 *wpaie, size_t ielen, u8 keymgmt, 58 u8 ucipher, u8 auth, u8 apsd_info) 59{ 60 struct ath6kl *ar = vif->ar; 61 struct ath6kl_sta *sta; 62 u8 free_slot; 63 64 free_slot = aid - 1; 65 66 sta = &ar->sta_list[free_slot]; 67 memcpy(sta->mac, mac, ETH_ALEN); 68 if (ielen <= ATH6KL_MAX_IE) 69 memcpy(sta->wpa_ie, wpaie, ielen); 70 sta->aid = aid; 71 sta->keymgmt = keymgmt; 72 sta->ucipher = ucipher; 73 sta->auth = auth; 74 sta->apsd_info = apsd_info; 75 76 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 77 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 78 aggr_conn_init(vif, vif->aggr_cntxt, sta->aggr_conn); 79} 80 81static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 82{ 83 struct ath6kl_sta *sta = &ar->sta_list[i]; 84 struct ath6kl_mgmt_buff *entry, *tmp; 85 86 /* empty the queued pkts in the PS queue if any */ 87 spin_lock_bh(&sta->psq_lock); 88 skb_queue_purge(&sta->psq); 89 skb_queue_purge(&sta->apsdq); 90 91 if (sta->mgmt_psq_len != 0) { 92 list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) { 93 kfree(entry); 94 } 95 INIT_LIST_HEAD(&sta->mgmt_psq); 96 sta->mgmt_psq_len = 0; 97 } 98 99 spin_unlock_bh(&sta->psq_lock); 100 101 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 102 sizeof(struct wmi_per_sta_stat)); 103 memset(sta->mac, 0, ETH_ALEN); 104 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 105 sta->aid = 0; 106 sta->sta_flags = 0; 107 108 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 109 aggr_reset_state(sta->aggr_conn); 110} 111 112static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 113{ 114 u8 i, removed = 0; 115 116 if (is_zero_ether_addr(mac)) 117 return removed; 118 119 if (is_broadcast_ether_addr(mac)) { 120 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 121 122 for (i = 0; i < AP_MAX_NUM_STA; i++) { 123 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 124 ath6kl_sta_cleanup(ar, i); 125 removed = 1; 126 } 127 } 128 } else { 129 for (i = 0; i < AP_MAX_NUM_STA; i++) { 130 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 131 ath6kl_dbg(ATH6KL_DBG_TRC, 132 "deleting station %pM aid=%d reason=%d\n", 133 mac, ar->sta_list[i].aid, reason); 134 ath6kl_sta_cleanup(ar, i); 135 removed = 1; 136 break; 137 } 138 } 139 } 140 141 return removed; 142} 143 144enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 145{ 146 struct ath6kl *ar = devt; 147 return ar->ac2ep_map[ac]; 148} 149 150struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 151{ 152 struct ath6kl_cookie *cookie; 153 154 cookie = ar->cookie_list; 155 if (cookie != NULL) { 156 ar->cookie_list = cookie->arc_list_next; 157 ar->cookie_count--; 158 } 159 160 return cookie; 161} 162 163void ath6kl_cookie_init(struct ath6kl *ar) 164{ 165 u32 i; 166 167 ar->cookie_list = NULL; 168 ar->cookie_count = 0; 169 170 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 171 172 for (i = 0; i < MAX_COOKIE_NUM; i++) 173 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 174} 175 176void ath6kl_cookie_cleanup(struct ath6kl *ar) 177{ 178 ar->cookie_list = NULL; 179 ar->cookie_count = 0; 180} 181 182void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 183{ 184 /* Insert first */ 185 186 if (!ar || !cookie) 187 return; 188 189 cookie->arc_list_next = ar->cookie_list; 190 ar->cookie_list = cookie; 191 ar->cookie_count++; 192} 193 194/* 195 * Read from the hardware through its diagnostic window. No cooperation 196 * from the firmware is required for this. 197 */ 198int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 199{ 200 int ret; 201 202 ret = ath6kl_hif_diag_read32(ar, address, value); 203 if (ret) { 204 ath6kl_warn("failed to read32 through diagnose window: %d\n", 205 ret); 206 return ret; 207 } 208 209 return 0; 210} 211 212/* 213 * Write to the ATH6KL through its diagnostic window. No cooperation from 214 * the Target is required for this. 215 */ 216int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 217{ 218 int ret; 219 220 ret = ath6kl_hif_diag_write32(ar, address, value); 221 222 if (ret) { 223 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 224 address, value); 225 return ret; 226 } 227 228 return 0; 229} 230 231int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 232{ 233 u32 count, *buf = data; 234 int ret; 235 236 if (WARN_ON(length % 4)) 237 return -EINVAL; 238 239 for (count = 0; count < length / 4; count++, address += 4) { 240 ret = ath6kl_diag_read32(ar, address, &buf[count]); 241 if (ret) 242 return ret; 243 } 244 245 return 0; 246} 247 248int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 249{ 250 u32 count; 251 __le32 *buf = data; 252 int ret; 253 254 if (WARN_ON(length % 4)) 255 return -EINVAL; 256 257 for (count = 0; count < length / 4; count++, address += 4) { 258 ret = ath6kl_diag_write32(ar, address, buf[count]); 259 if (ret) 260 return ret; 261 } 262 263 return 0; 264} 265 266int ath6kl_read_fwlogs(struct ath6kl *ar) 267{ 268 struct ath6kl_dbglog_hdr debug_hdr; 269 struct ath6kl_dbglog_buf debug_buf; 270 u32 address, length, dropped, firstbuf, debug_hdr_addr; 271 int ret, loop; 272 u8 *buf; 273 274 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 275 if (!buf) 276 return -ENOMEM; 277 278 address = TARG_VTOP(ar->target_type, 279 ath6kl_get_hi_item_addr(ar, 280 HI_ITEM(hi_dbglog_hdr))); 281 282 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 283 if (ret) 284 goto out; 285 286 /* Get the contents of the ring buffer */ 287 if (debug_hdr_addr == 0) { 288 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 289 ret = -EINVAL; 290 goto out; 291 } 292 293 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 294 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 295 296 address = TARG_VTOP(ar->target_type, 297 le32_to_cpu(debug_hdr.dbuf_addr)); 298 firstbuf = address; 299 dropped = le32_to_cpu(debug_hdr.dropped); 300 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 301 302 loop = 100; 303 304 do { 305 address = TARG_VTOP(ar->target_type, 306 le32_to_cpu(debug_buf.buffer_addr)); 307 length = le32_to_cpu(debug_buf.length); 308 309 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 310 le32_to_cpu(debug_buf.bufsize))) { 311 length = ALIGN(length, 4); 312 313 ret = ath6kl_diag_read(ar, address, 314 buf, length); 315 if (ret) 316 goto out; 317 318 ath6kl_debug_fwlog_event(ar, buf, length); 319 } 320 321 address = TARG_VTOP(ar->target_type, 322 le32_to_cpu(debug_buf.next)); 323 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 324 if (ret) 325 goto out; 326 327 loop--; 328 329 if (WARN_ON(loop == 0)) { 330 ret = -ETIMEDOUT; 331 goto out; 332 } 333 } while (address != firstbuf); 334 335out: 336 kfree(buf); 337 338 return ret; 339} 340 341/* FIXME: move to a better place, target.h? */ 342#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 343#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 344 345void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 346 bool wait_fot_compltn, bool cold_reset) 347{ 348 int status = 0; 349 u32 address; 350 __le32 data; 351 352 if (target_type != TARGET_TYPE_AR6003 && 353 target_type != TARGET_TYPE_AR6004) 354 return; 355 356 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 357 cpu_to_le32(RESET_CONTROL_MBOX_RST); 358 359 switch (target_type) { 360 case TARGET_TYPE_AR6003: 361 address = AR6003_RESET_CONTROL_ADDRESS; 362 break; 363 case TARGET_TYPE_AR6004: 364 address = AR6004_RESET_CONTROL_ADDRESS; 365 break; 366 } 367 368 status = ath6kl_diag_write32(ar, address, data); 369 370 if (status) 371 ath6kl_err("failed to reset target\n"); 372} 373 374static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 375{ 376 u8 index; 377 u8 keyusage; 378 379 for (index = 0; index <= WMI_MAX_KEY_INDEX; index++) { 380 if (vif->wep_key_list[index].key_len) { 381 keyusage = GROUP_USAGE; 382 if (index == vif->def_txkey_index) 383 keyusage |= TX_USAGE; 384 385 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 386 index, 387 WEP_CRYPT, 388 keyusage, 389 vif->wep_key_list[index].key_len, 390 NULL, 0, 391 vif->wep_key_list[index].key, 392 KEY_OP_INIT_VAL, NULL, 393 NO_SYNC_WMIFLAG); 394 } 395 } 396} 397 398void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 399{ 400 struct ath6kl *ar = vif->ar; 401 struct ath6kl_req_key *ik; 402 int res; 403 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 404 405 ik = &ar->ap_mode_bkey; 406 407 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 408 409 switch (vif->auth_mode) { 410 case NONE_AUTH: 411 if (vif->prwise_crypto == WEP_CRYPT) 412 ath6kl_install_static_wep_keys(vif); 413 if (!ik->valid || ik->key_type != WAPI_CRYPT) 414 break; 415 /* for WAPI, we need to set the delayed group key, continue: */ 416 case WPA_PSK_AUTH: 417 case WPA2_PSK_AUTH: 418 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 419 if (!ik->valid) 420 break; 421 422 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 423 "the initial group key for AP mode\n"); 424 memset(key_rsc, 0, sizeof(key_rsc)); 425 res = ath6kl_wmi_addkey_cmd( 426 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 427 GROUP_USAGE, ik->key_len, key_rsc, ATH6KL_KEY_SEQ_LEN, 428 ik->key, 429 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 430 if (res) { 431 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 432 "addkey failed: %d\n", res); 433 } 434 break; 435 } 436 437 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 438 set_bit(CONNECTED, &vif->flags); 439 netif_carrier_on(vif->ndev); 440} 441 442void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 443 u8 keymgmt, u8 ucipher, u8 auth, 444 u8 assoc_req_len, u8 *assoc_info, u8 apsd_info) 445{ 446 u8 *ies = NULL, *wpa_ie = NULL, *pos; 447 size_t ies_len = 0; 448 struct station_info sinfo; 449 450 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 451 452 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 453 struct ieee80211_mgmt *mgmt = 454 (struct ieee80211_mgmt *) assoc_info; 455 if (ieee80211_is_assoc_req(mgmt->frame_control) && 456 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 457 sizeof(mgmt->u.assoc_req)) { 458 ies = mgmt->u.assoc_req.variable; 459 ies_len = assoc_info + assoc_req_len - ies; 460 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 461 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 462 + sizeof(mgmt->u.reassoc_req)) { 463 ies = mgmt->u.reassoc_req.variable; 464 ies_len = assoc_info + assoc_req_len - ies; 465 } 466 } 467 468 pos = ies; 469 while (pos && pos + 1 < ies + ies_len) { 470 if (pos + 2 + pos[1] > ies + ies_len) 471 break; 472 if (pos[0] == WLAN_EID_RSN) 473 wpa_ie = pos; /* RSN IE */ 474 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 475 pos[1] >= 4 && 476 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 477 if (pos[5] == 0x01) 478 wpa_ie = pos; /* WPA IE */ 479 else if (pos[5] == 0x04) { 480 wpa_ie = pos; /* WPS IE */ 481 break; /* overrides WPA/RSN IE */ 482 } 483 } else if (pos[0] == 0x44 && wpa_ie == NULL) { 484 /* 485 * Note: WAPI Parameter Set IE re-uses Element ID that 486 * was officially allocated for BSS AC Access Delay. As 487 * such, we need to be a bit more careful on when 488 * parsing the frame. However, BSS AC Access Delay 489 * element is not supposed to be included in 490 * (Re)Association Request frames, so this should not 491 * cause problems. 492 */ 493 wpa_ie = pos; /* WAPI IE */ 494 break; 495 } 496 pos += 2 + pos[1]; 497 } 498 499 ath6kl_add_new_sta(vif, mac_addr, aid, wpa_ie, 500 wpa_ie ? 2 + wpa_ie[1] : 0, 501 keymgmt, ucipher, auth, apsd_info); 502 503 /* send event to application */ 504 memset(&sinfo, 0, sizeof(sinfo)); 505 506 /* TODO: sinfo.generation */ 507 508 sinfo.assoc_req_ies = ies; 509 sinfo.assoc_req_ies_len = ies_len; 510 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 511 512 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 513 514 netif_wake_queue(vif->ndev); 515} 516 517void disconnect_timer_handler(unsigned long ptr) 518{ 519 struct net_device *dev = (struct net_device *)ptr; 520 struct ath6kl_vif *vif = netdev_priv(dev); 521 522 ath6kl_init_profile_info(vif); 523 ath6kl_disconnect(vif); 524} 525 526void ath6kl_disconnect(struct ath6kl_vif *vif) 527{ 528 if (test_bit(CONNECTED, &vif->flags) || 529 test_bit(CONNECT_PEND, &vif->flags)) { 530 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 531 /* 532 * Disconnect command is issued, clear the connect pending 533 * flag. The connected flag will be cleared in 534 * disconnect event notification. 535 */ 536 clear_bit(CONNECT_PEND, &vif->flags); 537 } 538} 539 540/* WMI Event handlers */ 541 542void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 543{ 544 struct ath6kl *ar = devt; 545 546 memcpy(ar->mac_addr, datap, ETH_ALEN); 547 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 548 __func__, ar->mac_addr); 549 550 ar->version.wlan_ver = sw_ver; 551 ar->version.abi_ver = abi_ver; 552 553 snprintf(ar->wiphy->fw_version, 554 sizeof(ar->wiphy->fw_version), 555 "%u.%u.%u.%u", 556 (ar->version.wlan_ver & 0xf0000000) >> 28, 557 (ar->version.wlan_ver & 0x0f000000) >> 24, 558 (ar->version.wlan_ver & 0x00ff0000) >> 16, 559 (ar->version.wlan_ver & 0x0000ffff)); 560 561 /* indicate to the waiting thread that the ready event was received */ 562 set_bit(WMI_READY, &ar->flag); 563 wake_up(&ar->event_wq); 564} 565 566void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 567{ 568 struct ath6kl *ar = vif->ar; 569 bool aborted = false; 570 571 if (status != WMI_SCAN_STATUS_SUCCESS) 572 aborted = true; 573 574 ath6kl_cfg80211_scan_complete_event(vif, aborted); 575 576 if (!ar->usr_bss_filter) { 577 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 578 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 579 NONE_BSS_FILTER, 0); 580 } 581 582 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "scan complete: %d\n", status); 583} 584 585void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 586 u16 listen_int, u16 beacon_int, 587 enum network_type net_type, u8 beacon_ie_len, 588 u8 assoc_req_len, u8 assoc_resp_len, 589 u8 *assoc_info) 590{ 591 struct ath6kl *ar = vif->ar; 592 593 ath6kl_cfg80211_connect_event(vif, channel, bssid, 594 listen_int, beacon_int, 595 net_type, beacon_ie_len, 596 assoc_req_len, assoc_resp_len, 597 assoc_info); 598 599 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 600 vif->bss_ch = channel; 601 602 if ((vif->nw_type == INFRA_NETWORK)) 603 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 604 vif->listen_intvl_t, 0); 605 606 netif_wake_queue(vif->ndev); 607 608 /* Update connect & link status atomically */ 609 spin_lock_bh(&vif->if_lock); 610 set_bit(CONNECTED, &vif->flags); 611 clear_bit(CONNECT_PEND, &vif->flags); 612 netif_carrier_on(vif->ndev); 613 spin_unlock_bh(&vif->if_lock); 614 615 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 616 vif->reconnect_flag = 0; 617 618 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 619 memset(ar->node_map, 0, sizeof(ar->node_map)); 620 ar->node_num = 0; 621 ar->next_ep_id = ENDPOINT_2; 622 } 623 624 if (!ar->usr_bss_filter) { 625 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 626 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 627 CURRENT_BSS_FILTER, 0); 628 } 629} 630 631void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 632{ 633 struct ath6kl_sta *sta; 634 struct ath6kl *ar = vif->ar; 635 u8 tsc[6]; 636 637 /* 638 * For AP case, keyid will have aid of STA which sent pkt with 639 * MIC error. Use this aid to get MAC & send it to hostapd. 640 */ 641 if (vif->nw_type == AP_NETWORK) { 642 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 643 if (!sta) 644 return; 645 646 ath6kl_dbg(ATH6KL_DBG_TRC, 647 "ap tkip mic error received from aid=%d\n", keyid); 648 649 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 650 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 651 NL80211_KEYTYPE_PAIRWISE, keyid, 652 tsc, GFP_KERNEL); 653 } else 654 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 655 656} 657 658static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 659{ 660 struct wmi_target_stats *tgt_stats = 661 (struct wmi_target_stats *) ptr; 662 struct ath6kl *ar = vif->ar; 663 struct target_stats *stats = &vif->target_stats; 664 struct tkip_ccmp_stats *ccmp_stats; 665 u8 ac; 666 667 if (len < sizeof(*tgt_stats)) 668 return; 669 670 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 671 672 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 673 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 674 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 675 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 676 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 677 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 678 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 679 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 680 stats->tx_rts_success_cnt += 681 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 682 683 for (ac = 0; ac < WMM_NUM_AC; ac++) 684 stats->tx_pkt_per_ac[ac] += 685 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 686 687 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 688 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 689 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 690 stats->tx_mult_retry_cnt += 691 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 692 stats->tx_rts_fail_cnt += 693 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 694 stats->tx_ucast_rate = 695 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 696 697 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 698 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 699 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 700 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 701 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 702 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 703 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 704 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 705 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 706 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 707 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 708 stats->rx_key_cache_miss += 709 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 710 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 711 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 712 stats->rx_ucast_rate = 713 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 714 715 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 716 717 stats->tkip_local_mic_fail += 718 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 719 stats->tkip_cnter_measures_invoked += 720 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 721 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 722 723 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 724 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 725 726 stats->pwr_save_fail_cnt += 727 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 728 stats->noise_floor_calib = 729 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 730 731 stats->cs_bmiss_cnt += 732 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 733 stats->cs_low_rssi_cnt += 734 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 735 stats->cs_connect_cnt += 736 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 737 stats->cs_discon_cnt += 738 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 739 740 stats->cs_ave_beacon_rssi = 741 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 742 743 stats->cs_last_roam_msec = 744 tgt_stats->cserv_stats.cs_last_roam_msec; 745 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 746 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 747 748 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 749 750 stats->wow_pkt_dropped += 751 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 752 stats->wow_host_pkt_wakeups += 753 tgt_stats->wow_stats.wow_host_pkt_wakeups; 754 stats->wow_host_evt_wakeups += 755 tgt_stats->wow_stats.wow_host_evt_wakeups; 756 stats->wow_evt_discarded += 757 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 758 759 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 760 clear_bit(STATS_UPDATE_PEND, &vif->flags); 761 wake_up(&ar->event_wq); 762 } 763} 764 765static void ath6kl_add_le32(__le32 *var, __le32 val) 766{ 767 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 768} 769 770void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 771{ 772 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 773 struct ath6kl *ar = vif->ar; 774 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 775 struct wmi_per_sta_stat *st_ap, *st_p; 776 u8 ac; 777 778 if (vif->nw_type == AP_NETWORK) { 779 if (len < sizeof(*p)) 780 return; 781 782 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 783 st_ap = &ap->sta[ac]; 784 st_p = &p->sta[ac]; 785 786 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 787 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 788 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 789 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 790 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 791 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 792 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 793 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 794 } 795 796 } else { 797 ath6kl_update_target_stats(vif, ptr, len); 798 } 799} 800 801void ath6kl_wakeup_event(void *dev) 802{ 803 struct ath6kl *ar = (struct ath6kl *) dev; 804 805 wake_up(&ar->event_wq); 806} 807 808void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 809{ 810 struct ath6kl *ar = (struct ath6kl *) devt; 811 812 ar->tx_pwr = tx_pwr; 813 wake_up(&ar->event_wq); 814} 815 816void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 817{ 818 struct ath6kl_sta *conn; 819 struct sk_buff *skb; 820 bool psq_empty = false; 821 struct ath6kl *ar = vif->ar; 822 struct ath6kl_mgmt_buff *mgmt_buf; 823 824 conn = ath6kl_find_sta_by_aid(ar, aid); 825 826 if (!conn) 827 return; 828 /* 829 * Send out a packet queued on ps queue. When the ps queue 830 * becomes empty update the PVB for this station. 831 */ 832 spin_lock_bh(&conn->psq_lock); 833 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 834 spin_unlock_bh(&conn->psq_lock); 835 836 if (psq_empty) 837 /* TODO: Send out a NULL data frame */ 838 return; 839 840 spin_lock_bh(&conn->psq_lock); 841 if (conn->mgmt_psq_len > 0) { 842 mgmt_buf = list_first_entry(&conn->mgmt_psq, 843 struct ath6kl_mgmt_buff, list); 844 list_del(&mgmt_buf->list); 845 conn->mgmt_psq_len--; 846 spin_unlock_bh(&conn->psq_lock); 847 848 conn->sta_flags |= STA_PS_POLLED; 849 ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, 850 mgmt_buf->id, mgmt_buf->freq, 851 mgmt_buf->wait, mgmt_buf->buf, 852 mgmt_buf->len, mgmt_buf->no_cck); 853 conn->sta_flags &= ~STA_PS_POLLED; 854 kfree(mgmt_buf); 855 } else { 856 skb = skb_dequeue(&conn->psq); 857 spin_unlock_bh(&conn->psq_lock); 858 859 conn->sta_flags |= STA_PS_POLLED; 860 ath6kl_data_tx(skb, vif->ndev); 861 conn->sta_flags &= ~STA_PS_POLLED; 862 } 863 864 spin_lock_bh(&conn->psq_lock); 865 psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0); 866 spin_unlock_bh(&conn->psq_lock); 867 868 if (psq_empty) 869 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 870} 871 872void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 873{ 874 bool mcastq_empty = false; 875 struct sk_buff *skb; 876 struct ath6kl *ar = vif->ar; 877 878 /* 879 * If there are no associated STAs, ignore the DTIM expiry event. 880 * There can be potential race conditions where the last associated 881 * STA may disconnect & before the host could clear the 'Indicate 882 * DTIM' request to the firmware, the firmware would have just 883 * indicated a DTIM expiry event. The race is between 'clear DTIM 884 * expiry cmd' going from the host to the firmware & the DTIM 885 * expiry event happening from the firmware to the host. 886 */ 887 if (!ar->sta_list_index) 888 return; 889 890 spin_lock_bh(&ar->mcastpsq_lock); 891 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 892 spin_unlock_bh(&ar->mcastpsq_lock); 893 894 if (mcastq_empty) 895 return; 896 897 /* set the STA flag to dtim_expired for the frame to go out */ 898 set_bit(DTIM_EXPIRED, &vif->flags); 899 900 spin_lock_bh(&ar->mcastpsq_lock); 901 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 902 spin_unlock_bh(&ar->mcastpsq_lock); 903 904 ath6kl_data_tx(skb, vif->ndev); 905 906 spin_lock_bh(&ar->mcastpsq_lock); 907 } 908 spin_unlock_bh(&ar->mcastpsq_lock); 909 910 clear_bit(DTIM_EXPIRED, &vif->flags); 911 912 /* clear the LSB of the BitMapCtl field of the TIM IE */ 913 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 914} 915 916void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 917 u8 assoc_resp_len, u8 *assoc_info, 918 u16 prot_reason_status) 919{ 920 struct ath6kl *ar = vif->ar; 921 922 if (vif->nw_type == AP_NETWORK) { 923 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 924 return; 925 926 /* if no more associated STAs, empty the mcast PS q */ 927 if (ar->sta_list_index == 0) { 928 spin_lock_bh(&ar->mcastpsq_lock); 929 skb_queue_purge(&ar->mcastpsq); 930 spin_unlock_bh(&ar->mcastpsq_lock); 931 932 /* clear the LSB of the TIM IE's BitMapCtl field */ 933 if (test_bit(WMI_READY, &ar->flag)) 934 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 935 MCAST_AID, 0); 936 } 937 938 if (!is_broadcast_ether_addr(bssid)) { 939 /* send event to application */ 940 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 941 } 942 943 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 944 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 945 clear_bit(CONNECTED, &vif->flags); 946 } 947 return; 948 } 949 950 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 951 assoc_resp_len, assoc_info, 952 prot_reason_status); 953 954 aggr_reset_state(vif->aggr_cntxt->aggr_conn); 955 956 del_timer(&vif->disconnect_timer); 957 958 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "disconnect reason is %d\n", reason); 959 960 /* 961 * If the event is due to disconnect cmd from the host, only they 962 * the target would stop trying to connect. Under any other 963 * condition, target would keep trying to connect. 964 */ 965 if (reason == DISCONNECT_CMD) { 966 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 967 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 968 NONE_BSS_FILTER, 0); 969 } else { 970 set_bit(CONNECT_PEND, &vif->flags); 971 if (((reason == ASSOC_FAILED) && 972 (prot_reason_status == 0x11)) || 973 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 974 && (vif->reconnect_flag == 1))) { 975 set_bit(CONNECTED, &vif->flags); 976 return; 977 } 978 } 979 980 /* update connect & link status atomically */ 981 spin_lock_bh(&vif->if_lock); 982 clear_bit(CONNECTED, &vif->flags); 983 netif_carrier_off(vif->ndev); 984 spin_unlock_bh(&vif->if_lock); 985 986 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 987 vif->reconnect_flag = 0; 988 989 if (reason != CSERV_DISCONNECT) 990 ar->user_key_ctrl = 0; 991 992 netif_stop_queue(vif->ndev); 993 memset(vif->bssid, 0, sizeof(vif->bssid)); 994 vif->bss_ch = 0; 995 996 ath6kl_tx_data_cleanup(ar); 997} 998 999struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar) 1000{ 1001 struct ath6kl_vif *vif; 1002 1003 spin_lock_bh(&ar->list_lock); 1004 if (list_empty(&ar->vif_list)) { 1005 spin_unlock_bh(&ar->list_lock); 1006 return NULL; 1007 } 1008 1009 vif = list_first_entry(&ar->vif_list, struct ath6kl_vif, list); 1010 1011 spin_unlock_bh(&ar->list_lock); 1012 1013 return vif; 1014} 1015 1016static int ath6kl_open(struct net_device *dev) 1017{ 1018 struct ath6kl_vif *vif = netdev_priv(dev); 1019 1020 set_bit(WLAN_ENABLED, &vif->flags); 1021 1022 if (test_bit(CONNECTED, &vif->flags)) { 1023 netif_carrier_on(dev); 1024 netif_wake_queue(dev); 1025 } else 1026 netif_carrier_off(dev); 1027 1028 return 0; 1029} 1030 1031static int ath6kl_close(struct net_device *dev) 1032{ 1033 struct ath6kl_vif *vif = netdev_priv(dev); 1034 1035 netif_stop_queue(dev); 1036 1037 ath6kl_cfg80211_stop(vif); 1038 1039 clear_bit(WLAN_ENABLED, &vif->flags); 1040 1041 return 0; 1042} 1043 1044static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1045{ 1046 struct ath6kl_vif *vif = netdev_priv(dev); 1047 1048 return &vif->net_stats; 1049} 1050 1051static int ath6kl_set_features(struct net_device *dev, 1052 netdev_features_t features) 1053{ 1054 struct ath6kl_vif *vif = netdev_priv(dev); 1055 struct ath6kl *ar = vif->ar; 1056 int err = 0; 1057 1058 if ((features & NETIF_F_RXCSUM) && 1059 (ar->rx_meta_ver != WMI_META_VERSION_2)) { 1060 ar->rx_meta_ver = WMI_META_VERSION_2; 1061 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1062 vif->fw_vif_idx, 1063 ar->rx_meta_ver, 0, 0); 1064 if (err) { 1065 dev->features = features & ~NETIF_F_RXCSUM; 1066 return err; 1067 } 1068 } else if (!(features & NETIF_F_RXCSUM) && 1069 (ar->rx_meta_ver == WMI_META_VERSION_2)) { 1070 ar->rx_meta_ver = 0; 1071 err = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, 1072 vif->fw_vif_idx, 1073 ar->rx_meta_ver, 0, 0); 1074 if (err) { 1075 dev->features = features | NETIF_F_RXCSUM; 1076 return err; 1077 } 1078 1079 } 1080 1081 return err; 1082} 1083 1084static void ath6kl_set_multicast_list(struct net_device *ndev) 1085{ 1086 struct ath6kl_vif *vif = netdev_priv(ndev); 1087 bool mc_all_on = false, mc_all_off = false; 1088 int mc_count = netdev_mc_count(ndev); 1089 struct netdev_hw_addr *ha; 1090 bool found; 1091 struct ath6kl_mc_filter *mc_filter, *tmp; 1092 struct list_head mc_filter_new; 1093 int ret; 1094 1095 if (!test_bit(WMI_READY, &vif->ar->flag) || 1096 !test_bit(WLAN_ENABLED, &vif->flags)) 1097 return; 1098 1099 mc_all_on = !!(ndev->flags & IFF_PROMISC) || 1100 !!(ndev->flags & IFF_ALLMULTI) || 1101 !!(mc_count > ATH6K_MAX_MC_FILTERS_PER_LIST); 1102 1103 mc_all_off = !(ndev->flags & IFF_MULTICAST) || mc_count == 0; 1104 1105 if (mc_all_on || mc_all_off) { 1106 /* Enable/disable all multicast */ 1107 ath6kl_dbg(ATH6KL_DBG_TRC, "%s multicast filter\n", 1108 mc_all_on ? "enabling" : "disabling"); 1109 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi, vif->fw_vif_idx, 1110 mc_all_on); 1111 if (ret) 1112 ath6kl_warn("Failed to %s multicast receive\n", 1113 mc_all_on ? "enable" : "disable"); 1114 return; 1115 } 1116 1117 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) { 1118 found = false; 1119 netdev_for_each_mc_addr(ha, ndev) { 1120 if (memcmp(ha->addr, mc_filter->hw_addr, 1121 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1122 found = true; 1123 break; 1124 } 1125 } 1126 1127 if (!found) { 1128 /* 1129 * Delete the filter which was previously set 1130 * but not in the new request. 1131 */ 1132 ath6kl_dbg(ATH6KL_DBG_TRC, 1133 "Removing %pM from multicast filter\n", 1134 mc_filter->hw_addr); 1135 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1136 vif->fw_vif_idx, mc_filter->hw_addr, 1137 false); 1138 if (ret) { 1139 ath6kl_warn("Failed to remove multicast filter:%pM\n", 1140 mc_filter->hw_addr); 1141 return; 1142 } 1143 1144 list_del(&mc_filter->list); 1145 kfree(mc_filter); 1146 } 1147 } 1148 1149 INIT_LIST_HEAD(&mc_filter_new); 1150 1151 netdev_for_each_mc_addr(ha, ndev) { 1152 found = false; 1153 list_for_each_entry(mc_filter, &vif->mc_filter, list) { 1154 if (memcmp(ha->addr, mc_filter->hw_addr, 1155 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE) == 0) { 1156 found = true; 1157 break; 1158 } 1159 } 1160 1161 if (!found) { 1162 mc_filter = kzalloc(sizeof(struct ath6kl_mc_filter), 1163 GFP_ATOMIC); 1164 if (!mc_filter) { 1165 WARN_ON(1); 1166 goto out; 1167 } 1168 1169 memcpy(mc_filter->hw_addr, ha->addr, 1170 ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE); 1171 /* Set the multicast filter */ 1172 ath6kl_dbg(ATH6KL_DBG_TRC, 1173 "Adding %pM to multicast filter list\n", 1174 mc_filter->hw_addr); 1175 ret = ath6kl_wmi_add_del_mcast_filter_cmd(vif->ar->wmi, 1176 vif->fw_vif_idx, mc_filter->hw_addr, 1177 true); 1178 if (ret) { 1179 ath6kl_warn("Failed to add multicast filter :%pM\n", 1180 mc_filter->hw_addr); 1181 kfree(mc_filter); 1182 goto out; 1183 } 1184 1185 list_add_tail(&mc_filter->list, &mc_filter_new); 1186 } 1187 } 1188 1189out: 1190 list_splice_tail(&mc_filter_new, &vif->mc_filter); 1191} 1192 1193static const struct net_device_ops ath6kl_netdev_ops = { 1194 .ndo_open = ath6kl_open, 1195 .ndo_stop = ath6kl_close, 1196 .ndo_start_xmit = ath6kl_data_tx, 1197 .ndo_get_stats = ath6kl_get_stats, 1198 .ndo_set_features = ath6kl_set_features, 1199 .ndo_set_rx_mode = ath6kl_set_multicast_list, 1200}; 1201 1202void init_netdev(struct net_device *dev) 1203{ 1204 dev->netdev_ops = &ath6kl_netdev_ops; 1205 dev->destructor = free_netdev; 1206 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1207 1208 dev->needed_headroom = ETH_HLEN; 1209 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1210 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1211 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1212 1213 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1214 1215 return; 1216} 1217