main.c revision ad226ec22b92d7f0f834015149b1d1118e017f16
1/* 2 * Copyright (c) 2004-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include "core.h" 18#include "hif-ops.h" 19#include "cfg80211.h" 20#include "target.h" 21#include "debug.h" 22 23struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr) 24{ 25 struct ath6kl_sta *conn = NULL; 26 u8 i, max_conn; 27 28 max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 29 30 for (i = 0; i < max_conn; i++) { 31 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 32 conn = &ar->sta_list[i]; 33 break; 34 } 35 } 36 37 return conn; 38} 39 40struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 41{ 42 struct ath6kl_sta *conn = NULL; 43 u8 ctr; 44 45 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 46 if (ar->sta_list[ctr].aid == aid) { 47 conn = &ar->sta_list[ctr]; 48 break; 49 } 50 } 51 return conn; 52} 53 54static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, 55 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) 56{ 57 struct ath6kl_sta *sta; 58 u8 free_slot; 59 60 free_slot = aid - 1; 61 62 sta = &ar->sta_list[free_slot]; 63 memcpy(sta->mac, mac, ETH_ALEN); 64 memcpy(sta->wpa_ie, wpaie, ielen); 65 sta->aid = aid; 66 sta->keymgmt = keymgmt; 67 sta->ucipher = ucipher; 68 sta->auth = auth; 69 70 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 71 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 72} 73 74static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 75{ 76 struct ath6kl_sta *sta = &ar->sta_list[i]; 77 78 /* empty the queued pkts in the PS queue if any */ 79 spin_lock_bh(&sta->psq_lock); 80 skb_queue_purge(&sta->psq); 81 spin_unlock_bh(&sta->psq_lock); 82 83 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 84 sizeof(struct wmi_per_sta_stat)); 85 memset(sta->mac, 0, ETH_ALEN); 86 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 87 sta->aid = 0; 88 sta->sta_flags = 0; 89 90 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 91 92} 93 94static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 95{ 96 u8 i, removed = 0; 97 98 if (is_zero_ether_addr(mac)) 99 return removed; 100 101 if (is_broadcast_ether_addr(mac)) { 102 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 103 104 for (i = 0; i < AP_MAX_NUM_STA; i++) { 105 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 106 ath6kl_sta_cleanup(ar, i); 107 removed = 1; 108 } 109 } 110 } else { 111 for (i = 0; i < AP_MAX_NUM_STA; i++) { 112 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 113 ath6kl_dbg(ATH6KL_DBG_TRC, 114 "deleting station %pM aid=%d reason=%d\n", 115 mac, ar->sta_list[i].aid, reason); 116 ath6kl_sta_cleanup(ar, i); 117 removed = 1; 118 break; 119 } 120 } 121 } 122 123 return removed; 124} 125 126enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 127{ 128 struct ath6kl *ar = devt; 129 return ar->ac2ep_map[ac]; 130} 131 132struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 133{ 134 struct ath6kl_cookie *cookie; 135 136 cookie = ar->cookie_list; 137 if (cookie != NULL) { 138 ar->cookie_list = cookie->arc_list_next; 139 ar->cookie_count--; 140 } 141 142 return cookie; 143} 144 145void ath6kl_cookie_init(struct ath6kl *ar) 146{ 147 u32 i; 148 149 ar->cookie_list = NULL; 150 ar->cookie_count = 0; 151 152 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 153 154 for (i = 0; i < MAX_COOKIE_NUM; i++) 155 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 156} 157 158void ath6kl_cookie_cleanup(struct ath6kl *ar) 159{ 160 ar->cookie_list = NULL; 161 ar->cookie_count = 0; 162} 163 164void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 165{ 166 /* Insert first */ 167 168 if (!ar || !cookie) 169 return; 170 171 cookie->arc_list_next = ar->cookie_list; 172 ar->cookie_list = cookie; 173 ar->cookie_count++; 174} 175 176/* set the window address register (using 4-byte register access ). */ 177static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 178{ 179 int status; 180 u8 addr_val[4]; 181 s32 i; 182 183 /* 184 * Write bytes 1,2,3 of the register to set the upper address bytes, 185 * the LSB is written last to initiate the access cycle 186 */ 187 188 for (i = 1; i <= 3; i++) { 189 /* 190 * Fill the buffer with the address byte value we want to 191 * hit 4 times. 192 */ 193 memset(addr_val, ((u8 *)&addr)[i], 4); 194 195 /* 196 * Hit each byte of the register address with a 4-byte 197 * write operation to the same address, this is a harmless 198 * operation. 199 */ 200 status = hif_read_write_sync(ar, reg_addr + i, addr_val, 201 4, HIF_WR_SYNC_BYTE_FIX); 202 if (status) 203 break; 204 } 205 206 if (status) { 207 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 208 addr, reg_addr); 209 return status; 210 } 211 212 /* 213 * Write the address register again, this time write the whole 214 * 4-byte value. The effect here is that the LSB write causes the 215 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 216 * effect since we are writing the same values again 217 */ 218 status = hif_read_write_sync(ar, reg_addr, (u8 *)(&addr), 219 4, HIF_WR_SYNC_BYTE_INC); 220 221 if (status) { 222 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 223 addr, reg_addr); 224 return status; 225 } 226 227 return 0; 228} 229 230/* 231 * Read from the ATH6KL through its diagnostic window. No cooperation from 232 * the Target is required for this. 233 */ 234int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 235{ 236 int status; 237 238 /* set window register to start read cycle */ 239 status = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, 240 *address); 241 242 if (status) 243 return status; 244 245 /* read the data */ 246 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 247 sizeof(u32), HIF_RD_SYNC_BYTE_INC); 248 if (status) { 249 ath6kl_err("failed to read from window data addr\n"); 250 return status; 251 } 252 253 return status; 254} 255 256 257/* 258 * Write to the ATH6KL through its diagnostic window. No cooperation from 259 * the Target is required for this. 260 */ 261static int ath6kl_write_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 262{ 263 int status; 264 265 /* set write data */ 266 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 267 sizeof(u32), HIF_WR_SYNC_BYTE_INC); 268 if (status) { 269 ath6kl_err("failed to write 0x%x to window data addr\n", *data); 270 return status; 271 } 272 273 /* set window register, which starts the write cycle */ 274 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 275 *address); 276} 277 278int ath6kl_access_datadiag(struct ath6kl *ar, u32 address, 279 u8 *data, u32 length, bool read) 280{ 281 u32 count; 282 int status = 0; 283 284 for (count = 0; count < length; count += 4, address += 4) { 285 if (read) { 286 status = ath6kl_read_reg_diag(ar, &address, 287 (u32 *) &data[count]); 288 if (status) 289 break; 290 } else { 291 status = ath6kl_write_reg_diag(ar, &address, 292 (u32 *) &data[count]); 293 if (status) 294 break; 295 } 296 } 297 298 return status; 299} 300 301static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 302 bool wait_fot_compltn, bool cold_reset) 303{ 304 int status = 0; 305 u32 address; 306 u32 data; 307 308 if (target_type != TARGET_TYPE_AR6003) 309 return; 310 311 data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; 312 313 address = RTC_BASE_ADDRESS; 314 status = ath6kl_write_reg_diag(ar, &address, &data); 315 316 if (status) 317 ath6kl_err("failed to reset target\n"); 318} 319 320void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 321 bool get_dbglogs) 322{ 323 struct ath6kl *ar = ath6kl_priv(dev); 324 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 325 bool discon_issued; 326 327 netif_stop_queue(dev); 328 329 /* disable the target and the interrupts associated with it */ 330 if (test_bit(WMI_READY, &ar->flag)) { 331 discon_issued = (test_bit(CONNECTED, &ar->flag) || 332 test_bit(CONNECT_PEND, &ar->flag)); 333 ath6kl_disconnect(ar); 334 if (!keep_profile) 335 ath6kl_init_profile_info(ar); 336 337 del_timer(&ar->disconnect_timer); 338 339 clear_bit(WMI_READY, &ar->flag); 340 ath6kl_wmi_shutdown(ar->wmi); 341 clear_bit(WMI_ENABLED, &ar->flag); 342 ar->wmi = NULL; 343 344 /* 345 * After wmi_shudown all WMI events will be dropped. We 346 * need to cleanup the buffers allocated in AP mode and 347 * give disconnect notification to stack, which usually 348 * happens in the disconnect_event. Simulate the disconnect 349 * event by calling the function directly. Sometimes 350 * disconnect_event will be received when the debug logs 351 * are collected. 352 */ 353 if (discon_issued) 354 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 355 (ar->nw_type & AP_NETWORK) ? 356 bcast_mac : ar->bssid, 357 0, NULL, 0); 358 359 ar->user_key_ctrl = 0; 360 361 } else { 362 ath6kl_dbg(ATH6KL_DBG_TRC, 363 "%s: wmi is not ready 0x%p 0x%p\n", 364 __func__, ar, ar->wmi); 365 366 /* Shut down WMI if we have started it */ 367 if (test_bit(WMI_ENABLED, &ar->flag)) { 368 ath6kl_dbg(ATH6KL_DBG_TRC, 369 "%s: shut down wmi\n", __func__); 370 ath6kl_wmi_shutdown(ar->wmi); 371 clear_bit(WMI_ENABLED, &ar->flag); 372 ar->wmi = NULL; 373 } 374 } 375 376 if (ar->htc_target) { 377 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 378 ath6kl_htc_stop(ar->htc_target); 379 } 380 381 /* 382 * Try to reset the device if we can. The driver may have been 383 * configure NOT to reset the target during a debug session. 384 */ 385 ath6kl_dbg(ATH6KL_DBG_TRC, 386 "attempting to reset target on instance destroy\n"); 387 ath6kl_reset_device(ar, ar->target_type, true, true); 388} 389 390static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 391{ 392 u8 index; 393 u8 keyusage; 394 395 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 396 if (ar->wep_key_list[index].key_len) { 397 keyusage = GROUP_USAGE; 398 if (index == ar->def_txkey_index) 399 keyusage |= TX_USAGE; 400 401 ath6kl_wmi_addkey_cmd(ar->wmi, 402 index, 403 WEP_CRYPT, 404 keyusage, 405 ar->wep_key_list[index].key_len, 406 NULL, 407 ar->wep_key_list[index].key, 408 KEY_OP_INIT_VAL, NULL, 409 NO_SYNC_WMIFLAG); 410 } 411 } 412} 413 414static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, 415 u16 listen_int, u16 beacon_int, 416 u8 assoc_resp_len, u8 *assoc_info) 417{ 418 struct net_device *dev = ar->net_dev; 419 struct station_info sinfo; 420 struct ath6kl_req_key *ik; 421 enum crypto_type keyType = NONE_CRYPT; 422 423 if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { 424 ik = &ar->ap_mode_bkey; 425 426 switch (ar->auth_mode) { 427 case NONE_AUTH: 428 if (ar->prwise_crypto == WEP_CRYPT) 429 ath6kl_install_static_wep_keys(ar); 430 break; 431 case WPA_PSK_AUTH: 432 case WPA2_PSK_AUTH: 433 case (WPA_PSK_AUTH|WPA2_PSK_AUTH): 434 switch (ik->ik_type) { 435 case ATH6KL_CIPHER_TKIP: 436 keyType = TKIP_CRYPT; 437 break; 438 case ATH6KL_CIPHER_AES_CCM: 439 keyType = AES_CRYPT; 440 break; 441 default: 442 goto skip_key; 443 } 444 ath6kl_wmi_addkey_cmd(ar->wmi, ik->ik_keyix, keyType, 445 GROUP_USAGE, ik->ik_keylen, 446 (u8 *)&ik->ik_keyrsc, 447 ik->ik_keydata, 448 KEY_OP_INIT_VAL, ik->ik_macaddr, 449 SYNC_BOTH_WMIFLAG); 450 break; 451 } 452skip_key: 453 set_bit(CONNECTED, &ar->flag); 454 return; 455 } 456 457 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", 458 bssid, channel); 459 460 ath6kl_add_new_sta(ar, bssid, channel, assoc_info, assoc_resp_len, 461 listen_int & 0xFF, beacon_int, 462 (listen_int >> 8) & 0xFF); 463 464 /* send event to application */ 465 memset(&sinfo, 0, sizeof(sinfo)); 466 467 /* TODO: sinfo.generation */ 468 /* TODO: need to deliver (Re)AssocReq IEs somehow.. change in 469 * cfg80211 needed, e.g., by adding those into sinfo 470 */ 471 cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); 472 473 netif_wake_queue(ar->net_dev); 474 475 return; 476} 477 478/* Functions for Tx credit handling */ 479void ath6k_credit_init(struct htc_credit_state_info *cred_info, 480 struct list_head *ep_list, 481 int tot_credits) 482{ 483 struct htc_endpoint_credit_dist *cur_ep_dist; 484 int count; 485 486 cred_info->cur_free_credits = tot_credits; 487 cred_info->total_avail_credits = tot_credits; 488 489 list_for_each_entry(cur_ep_dist, ep_list, list) { 490 if (cur_ep_dist->endpoint == ENDPOINT_0) 491 continue; 492 493 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 494 495 if (tot_credits > 4) 496 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 497 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 498 ath6kl_deposit_credit_to_ep(cred_info, 499 cur_ep_dist, 500 cur_ep_dist->cred_min); 501 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 502 } 503 504 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 505 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 506 cur_ep_dist->cred_min); 507 /* 508 * Control service is always marked active, it 509 * never goes inactive EVER. 510 */ 511 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 512 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 513 /* this is the lowest priority data endpoint */ 514 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 515 516 /* 517 * Streams have to be created (explicit | implicit) for all 518 * kinds of traffic. BE endpoints are also inactive in the 519 * beginning. When BE traffic starts it creates implicit 520 * streams that redistributes credits. 521 * 522 * Note: all other endpoints have minimums set but are 523 * initially given NO credits. credits will be distributed 524 * as traffic activity demands 525 */ 526 } 527 528 WARN_ON(cred_info->cur_free_credits <= 0); 529 530 list_for_each_entry(cur_ep_dist, ep_list, list) { 531 if (cur_ep_dist->endpoint == ENDPOINT_0) 532 continue; 533 534 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 535 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 536 else { 537 /* 538 * For the remaining data endpoints, we assume that 539 * each cred_per_msg are the same. We use a simple 540 * calculation here, we take the remaining credits 541 * and determine how many max messages this can 542 * cover and then set each endpoint's normal value 543 * equal to 3/4 this amount. 544 */ 545 count = (cred_info->cur_free_credits / 546 cur_ep_dist->cred_per_msg) 547 * cur_ep_dist->cred_per_msg; 548 count = (count * 3) >> 2; 549 count = max(count, cur_ep_dist->cred_per_msg); 550 cur_ep_dist->cred_norm = count; 551 552 } 553 } 554} 555 556/* initialize and setup credit distribution */ 557int ath6k_setup_credit_dist(void *htc_handle, 558 struct htc_credit_state_info *cred_info) 559{ 560 u16 servicepriority[5]; 561 562 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 563 564 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 565 servicepriority[1] = WMI_DATA_VO_SVC; 566 servicepriority[2] = WMI_DATA_VI_SVC; 567 servicepriority[3] = WMI_DATA_BE_SVC; 568 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 569 570 /* set priority list */ 571 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 572 573 return 0; 574} 575 576/* reduce an ep's credits back to a set limit */ 577static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 578 struct htc_endpoint_credit_dist *ep_dist, 579 int limit) 580{ 581 int credits; 582 583 ep_dist->cred_assngd = limit; 584 585 if (ep_dist->credits <= limit) 586 return; 587 588 credits = ep_dist->credits - limit; 589 ep_dist->credits -= credits; 590 cred_info->cur_free_credits += credits; 591} 592 593static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 594 struct list_head *epdist_list) 595{ 596 struct htc_endpoint_credit_dist *cur_dist_list; 597 598 list_for_each_entry(cur_dist_list, epdist_list, list) { 599 if (cur_dist_list->endpoint == ENDPOINT_0) 600 continue; 601 602 if (cur_dist_list->cred_to_dist > 0) { 603 cur_dist_list->credits += 604 cur_dist_list->cred_to_dist; 605 cur_dist_list->cred_to_dist = 0; 606 if (cur_dist_list->credits > 607 cur_dist_list->cred_assngd) 608 ath6k_reduce_credits(cred_info, 609 cur_dist_list, 610 cur_dist_list->cred_assngd); 611 612 if (cur_dist_list->credits > 613 cur_dist_list->cred_norm) 614 ath6k_reduce_credits(cred_info, cur_dist_list, 615 cur_dist_list->cred_norm); 616 617 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 618 if (cur_dist_list->txq_depth == 0) 619 ath6k_reduce_credits(cred_info, 620 cur_dist_list, 0); 621 } 622 } 623 } 624} 625 626/* 627 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 628 * question. 629 */ 630void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 631 struct htc_endpoint_credit_dist *ep_dist) 632{ 633 struct htc_endpoint_credit_dist *curdist_list; 634 int credits = 0; 635 int need; 636 637 if (ep_dist->svc_id == WMI_CONTROL_SVC) 638 goto out; 639 640 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 641 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 642 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 643 goto out; 644 645 /* 646 * For all other services, we follow a simple algorithm of: 647 * 648 * 1. checking the free pool for credits 649 * 2. checking lower priority endpoints for credits to take 650 */ 651 652 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 653 654 if (credits >= ep_dist->seek_cred) 655 goto out; 656 657 /* 658 * We don't have enough in the free pool, try taking away from 659 * lower priority services The rule for taking away credits: 660 * 661 * 1. Only take from lower priority endpoints 662 * 2. Only take what is allocated above the minimum (never 663 * starve an endpoint completely) 664 * 3. Only take what you need. 665 */ 666 667 list_for_each_entry_reverse(curdist_list, 668 &cred_info->lowestpri_ep_dist, 669 list) { 670 if (curdist_list == ep_dist) 671 break; 672 673 need = ep_dist->seek_cred - cred_info->cur_free_credits; 674 675 if ((curdist_list->cred_assngd - need) >= 676 curdist_list->cred_min) { 677 /* 678 * The current one has been allocated more than 679 * it's minimum and it has enough credits assigned 680 * above it's minimum to fulfill our need try to 681 * take away just enough to fulfill our need. 682 */ 683 ath6k_reduce_credits(cred_info, curdist_list, 684 curdist_list->cred_assngd - need); 685 686 if (cred_info->cur_free_credits >= 687 ep_dist->seek_cred) 688 break; 689 } 690 691 if (curdist_list->endpoint == ENDPOINT_0) 692 break; 693 } 694 695 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 696 697out: 698 /* did we find some credits? */ 699 if (credits) 700 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 701 702 ep_dist->seek_cred = 0; 703} 704 705/* redistribute credits based on activity change */ 706static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 707 struct list_head *ep_dist_list) 708{ 709 struct htc_endpoint_credit_dist *curdist_list; 710 711 list_for_each_entry(curdist_list, ep_dist_list, list) { 712 if (curdist_list->endpoint == ENDPOINT_0) 713 continue; 714 715 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 716 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 717 curdist_list->dist_flags |= HTC_EP_ACTIVE; 718 719 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 720 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 721 if (curdist_list->txq_depth == 0) 722 ath6k_reduce_credits(info, 723 curdist_list, 0); 724 else 725 ath6k_reduce_credits(info, 726 curdist_list, 727 curdist_list->cred_min); 728 } 729 } 730} 731 732/* 733 * 734 * This function is invoked whenever endpoints require credit 735 * distributions. A lock is held while this function is invoked, this 736 * function shall NOT block. The ep_dist_list is a list of distribution 737 * structures in prioritized order as defined by the call to the 738 * htc_set_credit_dist() api. 739 */ 740void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 741 struct list_head *ep_dist_list, 742 enum htc_credit_dist_reason reason) 743{ 744 switch (reason) { 745 case HTC_CREDIT_DIST_SEND_COMPLETE: 746 ath6k_credit_update(cred_info, ep_dist_list); 747 break; 748 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 749 ath6k_redistribute_credits(cred_info, ep_dist_list); 750 break; 751 default: 752 break; 753 } 754 755 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 756 WARN_ON(cred_info->cur_free_credits < 0); 757} 758 759void disconnect_timer_handler(unsigned long ptr) 760{ 761 struct net_device *dev = (struct net_device *)ptr; 762 struct ath6kl *ar = ath6kl_priv(dev); 763 764 ath6kl_init_profile_info(ar); 765 ath6kl_disconnect(ar); 766} 767 768void ath6kl_disconnect(struct ath6kl *ar) 769{ 770 if (test_bit(CONNECTED, &ar->flag) || 771 test_bit(CONNECT_PEND, &ar->flag)) { 772 ath6kl_wmi_disconnect_cmd(ar->wmi); 773 /* 774 * Disconnect command is issued, clear the connect pending 775 * flag. The connected flag will be cleared in 776 * disconnect event notification. 777 */ 778 clear_bit(CONNECT_PEND, &ar->flag); 779 } 780} 781 782/* WMI Event handlers */ 783 784static const char *get_hw_id_string(u32 id) 785{ 786 switch (id) { 787 case AR6003_REV1_VERSION: 788 return "1.0"; 789 case AR6003_REV2_VERSION: 790 return "2.0"; 791 case AR6003_REV3_VERSION: 792 return "2.1.1"; 793 default: 794 return "unknown"; 795 } 796} 797 798void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 799{ 800 struct ath6kl *ar = devt; 801 struct net_device *dev = ar->net_dev; 802 803 memcpy(dev->dev_addr, datap, ETH_ALEN); 804 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 805 __func__, dev->dev_addr); 806 807 ar->version.wlan_ver = sw_ver; 808 ar->version.abi_ver = abi_ver; 809 810 snprintf(ar->wdev->wiphy->fw_version, 811 sizeof(ar->wdev->wiphy->fw_version), 812 "%u.%u.%u.%u", 813 (ar->version.wlan_ver & 0xf0000000) >> 28, 814 (ar->version.wlan_ver & 0x0f000000) >> 24, 815 (ar->version.wlan_ver & 0x00ff0000) >> 16, 816 (ar->version.wlan_ver & 0x0000ffff)); 817 818 /* indicate to the waiting thread that the ready event was received */ 819 set_bit(WMI_READY, &ar->flag); 820 wake_up(&ar->event_wq); 821 822 ath6kl_info("hw %s fw %s\n", 823 get_hw_id_string(ar->wdev->wiphy->hw_version), 824 ar->wdev->wiphy->fw_version); 825} 826 827void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 828{ 829 ath6kl_cfg80211_scan_complete_event(ar, status); 830 831 if (!ar->usr_bss_filter) 832 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 833 834 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 835} 836 837void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 838 u16 listen_int, u16 beacon_int, 839 enum network_type net_type, u8 beacon_ie_len, 840 u8 assoc_req_len, u8 assoc_resp_len, 841 u8 *assoc_info) 842{ 843 unsigned long flags; 844 845 if (ar->nw_type == AP_NETWORK) { 846 ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, 847 beacon_int, assoc_resp_len, 848 assoc_info); 849 return; 850 } 851 852 ath6kl_cfg80211_connect_event(ar, channel, bssid, 853 listen_int, beacon_int, 854 net_type, beacon_ie_len, 855 assoc_req_len, assoc_resp_len, 856 assoc_info); 857 858 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 859 ar->bss_ch = channel; 860 861 if ((ar->nw_type == INFRA_NETWORK)) 862 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 863 ar->listen_intvl_b); 864 865 netif_wake_queue(ar->net_dev); 866 867 /* Update connect & link status atomically */ 868 spin_lock_irqsave(&ar->lock, flags); 869 set_bit(CONNECTED, &ar->flag); 870 clear_bit(CONNECT_PEND, &ar->flag); 871 netif_carrier_on(ar->net_dev); 872 spin_unlock_irqrestore(&ar->lock, flags); 873 874 aggr_reset_state(ar->aggr_cntxt); 875 ar->reconnect_flag = 0; 876 877 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 878 memset(ar->node_map, 0, sizeof(ar->node_map)); 879 ar->node_num = 0; 880 ar->next_ep_id = ENDPOINT_2; 881 } 882 883 if (!ar->usr_bss_filter) 884 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 885} 886 887void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 888{ 889 struct ath6kl_sta *sta; 890 u8 tsc[6]; 891 /* 892 * For AP case, keyid will have aid of STA which sent pkt with 893 * MIC error. Use this aid to get MAC & send it to hostapd. 894 */ 895 if (ar->nw_type == AP_NETWORK) { 896 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 897 if (!sta) 898 return; 899 900 ath6kl_dbg(ATH6KL_DBG_TRC, 901 "ap tkip mic error received from aid=%d\n", keyid); 902 903 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 904 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 905 NL80211_KEYTYPE_PAIRWISE, keyid, 906 tsc, GFP_KERNEL); 907 } else 908 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 909 910} 911 912static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 913{ 914 struct wmi_target_stats *tgt_stats = 915 (struct wmi_target_stats *) ptr; 916 struct target_stats *stats = &ar->target_stats; 917 struct tkip_ccmp_stats *ccmp_stats; 918 struct bss *conn_bss = NULL; 919 struct cserv_stats *c_stats; 920 u8 ac; 921 922 if (len < sizeof(*tgt_stats)) 923 return; 924 925 /* update the RSSI of the connected bss */ 926 if (test_bit(CONNECTED, &ar->flag)) { 927 conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); 928 if (conn_bss) { 929 c_stats = &tgt_stats->cserv_stats; 930 conn_bss->ni_rssi = 931 a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); 932 conn_bss->ni_snr = 933 tgt_stats->cserv_stats.cs_ave_beacon_snr; 934 ath6kl_wmi_node_return(ar->wmi, conn_bss); 935 } 936 } 937 938 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 939 940 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 941 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 942 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 943 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 944 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 945 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 946 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 947 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 948 stats->tx_rts_success_cnt += 949 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 950 951 for (ac = 0; ac < WMM_NUM_AC; ac++) 952 stats->tx_pkt_per_ac[ac] += 953 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 954 955 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 956 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 957 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 958 stats->tx_mult_retry_cnt += 959 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 960 stats->tx_rts_fail_cnt += 961 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 962 stats->tx_ucast_rate = 963 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 964 965 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 966 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 967 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 968 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 969 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 970 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 971 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 972 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 973 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 974 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 975 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 976 stats->rx_key_cache_miss += 977 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 978 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 979 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 980 stats->rx_ucast_rate = 981 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 982 983 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 984 985 stats->tkip_local_mic_fail += 986 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 987 stats->tkip_cnter_measures_invoked += 988 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 989 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 990 991 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 992 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 993 994 stats->pwr_save_fail_cnt += 995 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 996 stats->noise_floor_calib = 997 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 998 999 stats->cs_bmiss_cnt += 1000 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1001 stats->cs_low_rssi_cnt += 1002 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1003 stats->cs_connect_cnt += 1004 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1005 stats->cs_discon_cnt += 1006 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1007 1008 stats->cs_ave_beacon_rssi = 1009 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1010 1011 stats->cs_last_roam_msec = 1012 tgt_stats->cserv_stats.cs_last_roam_msec; 1013 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1014 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1015 1016 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1017 1018 stats->wow_pkt_dropped += 1019 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1020 stats->wow_host_pkt_wakeups += 1021 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1022 stats->wow_host_evt_wakeups += 1023 tgt_stats->wow_stats.wow_host_evt_wakeups; 1024 stats->wow_evt_discarded += 1025 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1026 1027 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1028 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1029 wake_up(&ar->event_wq); 1030 } 1031} 1032 1033static void ath6kl_add_le32(__le32 *var, __le32 val) 1034{ 1035 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1036} 1037 1038void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1039{ 1040 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1041 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1042 struct wmi_per_sta_stat *st_ap, *st_p; 1043 u8 ac; 1044 1045 if (ar->nw_type == AP_NETWORK) { 1046 if (len < sizeof(*p)) 1047 return; 1048 1049 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1050 st_ap = &ap->sta[ac]; 1051 st_p = &p->sta[ac]; 1052 1053 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1054 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1055 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1056 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1057 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1058 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1059 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1060 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1061 } 1062 1063 } else { 1064 ath6kl_update_target_stats(ar, ptr, len); 1065 } 1066} 1067 1068void ath6kl_wakeup_event(void *dev) 1069{ 1070 struct ath6kl *ar = (struct ath6kl *) dev; 1071 1072 wake_up(&ar->event_wq); 1073} 1074 1075void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1076{ 1077 struct ath6kl *ar = (struct ath6kl *) devt; 1078 1079 ar->tx_pwr = tx_pwr; 1080 wake_up(&ar->event_wq); 1081} 1082 1083void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1084{ 1085 struct ath6kl_sta *conn; 1086 struct sk_buff *skb; 1087 bool psq_empty = false; 1088 1089 conn = ath6kl_find_sta_by_aid(ar, aid); 1090 1091 if (!conn) 1092 return; 1093 /* 1094 * Send out a packet queued on ps queue. When the ps queue 1095 * becomes empty update the PVB for this station. 1096 */ 1097 spin_lock_bh(&conn->psq_lock); 1098 psq_empty = skb_queue_empty(&conn->psq); 1099 spin_unlock_bh(&conn->psq_lock); 1100 1101 if (psq_empty) 1102 /* TODO: Send out a NULL data frame */ 1103 return; 1104 1105 spin_lock_bh(&conn->psq_lock); 1106 skb = skb_dequeue(&conn->psq); 1107 spin_unlock_bh(&conn->psq_lock); 1108 1109 conn->sta_flags |= STA_PS_POLLED; 1110 ath6kl_data_tx(skb, ar->net_dev); 1111 conn->sta_flags &= ~STA_PS_POLLED; 1112 1113 spin_lock_bh(&conn->psq_lock); 1114 psq_empty = skb_queue_empty(&conn->psq); 1115 spin_unlock_bh(&conn->psq_lock); 1116 1117 if (psq_empty) 1118 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1119} 1120 1121void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1122{ 1123 bool mcastq_empty = false; 1124 struct sk_buff *skb; 1125 1126 /* 1127 * If there are no associated STAs, ignore the DTIM expiry event. 1128 * There can be potential race conditions where the last associated 1129 * STA may disconnect & before the host could clear the 'Indicate 1130 * DTIM' request to the firmware, the firmware would have just 1131 * indicated a DTIM expiry event. The race is between 'clear DTIM 1132 * expiry cmd' going from the host to the firmware & the DTIM 1133 * expiry event happening from the firmware to the host. 1134 */ 1135 if (!ar->sta_list_index) 1136 return; 1137 1138 spin_lock_bh(&ar->mcastpsq_lock); 1139 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1140 spin_unlock_bh(&ar->mcastpsq_lock); 1141 1142 if (mcastq_empty) 1143 return; 1144 1145 /* set the STA flag to dtim_expired for the frame to go out */ 1146 set_bit(DTIM_EXPIRED, &ar->flag); 1147 1148 spin_lock_bh(&ar->mcastpsq_lock); 1149 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1150 spin_unlock_bh(&ar->mcastpsq_lock); 1151 1152 ath6kl_data_tx(skb, ar->net_dev); 1153 1154 spin_lock_bh(&ar->mcastpsq_lock); 1155 } 1156 spin_unlock_bh(&ar->mcastpsq_lock); 1157 1158 clear_bit(DTIM_EXPIRED, &ar->flag); 1159 1160 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1161 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1162} 1163 1164void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1165 u8 assoc_resp_len, u8 *assoc_info, 1166 u16 prot_reason_status) 1167{ 1168 struct bss *wmi_ssid_node = NULL; 1169 unsigned long flags; 1170 1171 if (ar->nw_type == AP_NETWORK) { 1172 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1173 return; 1174 1175 /* if no more associated STAs, empty the mcast PS q */ 1176 if (ar->sta_list_index == 0) { 1177 spin_lock_bh(&ar->mcastpsq_lock); 1178 skb_queue_purge(&ar->mcastpsq); 1179 spin_unlock_bh(&ar->mcastpsq_lock); 1180 1181 /* clear the LSB of the TIM IE's BitMapCtl field */ 1182 if (test_bit(WMI_READY, &ar->flag)) 1183 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1184 } 1185 1186 if (!is_broadcast_ether_addr(bssid)) { 1187 /* send event to application */ 1188 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1189 } 1190 1191 clear_bit(CONNECTED, &ar->flag); 1192 return; 1193 } 1194 1195 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1196 assoc_resp_len, assoc_info, 1197 prot_reason_status); 1198 1199 aggr_reset_state(ar->aggr_cntxt); 1200 1201 del_timer(&ar->disconnect_timer); 1202 1203 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1204 "disconnect reason is %d\n", reason); 1205 1206 /* 1207 * If the event is due to disconnect cmd from the host, only they 1208 * the target would stop trying to connect. Under any other 1209 * condition, target would keep trying to connect. 1210 */ 1211 if (reason == DISCONNECT_CMD) { 1212 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1213 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1214 } else { 1215 set_bit(CONNECT_PEND, &ar->flag); 1216 if (((reason == ASSOC_FAILED) && 1217 (prot_reason_status == 0x11)) || 1218 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1219 && (ar->reconnect_flag == 1))) { 1220 set_bit(CONNECTED, &ar->flag); 1221 return; 1222 } 1223 } 1224 1225 if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { 1226 ath6kl_wmi_node_free(ar->wmi, bssid); 1227 1228 /* 1229 * In case any other same SSID nodes are present remove it, 1230 * since those nodes also not available now. 1231 */ 1232 do { 1233 /* 1234 * Find the nodes based on SSID and remove it 1235 * 1236 * Note: This case will not work out for 1237 * Hidden-SSID 1238 */ 1239 wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, 1240 ar->ssid, 1241 ar->ssid_len, 1242 false, 1243 true); 1244 1245 if (wmi_ssid_node) 1246 ath6kl_wmi_node_free(ar->wmi, 1247 wmi_ssid_node->ni_macaddr); 1248 1249 } while (wmi_ssid_node); 1250 } 1251 1252 /* update connect & link status atomically */ 1253 spin_lock_irqsave(&ar->lock, flags); 1254 clear_bit(CONNECTED, &ar->flag); 1255 netif_carrier_off(ar->net_dev); 1256 spin_unlock_irqrestore(&ar->lock, flags); 1257 1258 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1259 ar->reconnect_flag = 0; 1260 1261 if (reason != CSERV_DISCONNECT) 1262 ar->user_key_ctrl = 0; 1263 1264 netif_stop_queue(ar->net_dev); 1265 memset(ar->bssid, 0, sizeof(ar->bssid)); 1266 ar->bss_ch = 0; 1267 1268 ath6kl_tx_data_cleanup(ar); 1269} 1270 1271static int ath6kl_open(struct net_device *dev) 1272{ 1273 struct ath6kl *ar = ath6kl_priv(dev); 1274 unsigned long flags; 1275 1276 spin_lock_irqsave(&ar->lock, flags); 1277 1278 set_bit(WLAN_ENABLED, &ar->flag); 1279 1280 if (test_bit(CONNECTED, &ar->flag)) { 1281 netif_carrier_on(dev); 1282 netif_wake_queue(dev); 1283 } else 1284 netif_carrier_off(dev); 1285 1286 spin_unlock_irqrestore(&ar->lock, flags); 1287 1288 return 0; 1289} 1290 1291static int ath6kl_close(struct net_device *dev) 1292{ 1293 struct ath6kl *ar = ath6kl_priv(dev); 1294 1295 netif_stop_queue(dev); 1296 1297 ath6kl_disconnect(ar); 1298 1299 if (test_bit(WMI_READY, &ar->flag)) { 1300 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1301 0, 0, 0)) 1302 return -EIO; 1303 1304 clear_bit(WLAN_ENABLED, &ar->flag); 1305 } 1306 1307 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1308 1309 return 0; 1310} 1311 1312static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1313{ 1314 struct ath6kl *ar = ath6kl_priv(dev); 1315 1316 return &ar->net_stats; 1317} 1318 1319static struct net_device_ops ath6kl_netdev_ops = { 1320 .ndo_open = ath6kl_open, 1321 .ndo_stop = ath6kl_close, 1322 .ndo_start_xmit = ath6kl_data_tx, 1323 .ndo_get_stats = ath6kl_get_stats, 1324}; 1325 1326void init_netdev(struct net_device *dev) 1327{ 1328 dev->netdev_ops = &ath6kl_netdev_ops; 1329 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1330 1331 dev->needed_headroom = ETH_HLEN; 1332 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1333 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1334 + WMI_MAX_TX_META_SZ; 1335 1336 return; 1337} 1338