main.c revision 003353b0d27489228eff79447d0731687cea0207
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 if (ielen <= ATH6KL_MAX_IE) 65 memcpy(sta->wpa_ie, wpaie, ielen); 66 sta->aid = aid; 67 sta->keymgmt = keymgmt; 68 sta->ucipher = ucipher; 69 sta->auth = auth; 70 71 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 72 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 73} 74 75static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 76{ 77 struct ath6kl_sta *sta = &ar->sta_list[i]; 78 79 /* empty the queued pkts in the PS queue if any */ 80 spin_lock_bh(&sta->psq_lock); 81 skb_queue_purge(&sta->psq); 82 spin_unlock_bh(&sta->psq_lock); 83 84 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 85 sizeof(struct wmi_per_sta_stat)); 86 memset(sta->mac, 0, ETH_ALEN); 87 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 88 sta->aid = 0; 89 sta->sta_flags = 0; 90 91 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 92 93} 94 95static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 96{ 97 u8 i, removed = 0; 98 99 if (is_zero_ether_addr(mac)) 100 return removed; 101 102 if (is_broadcast_ether_addr(mac)) { 103 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 104 105 for (i = 0; i < AP_MAX_NUM_STA; i++) { 106 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 107 ath6kl_sta_cleanup(ar, i); 108 removed = 1; 109 } 110 } 111 } else { 112 for (i = 0; i < AP_MAX_NUM_STA; i++) { 113 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 114 ath6kl_dbg(ATH6KL_DBG_TRC, 115 "deleting station %pM aid=%d reason=%d\n", 116 mac, ar->sta_list[i].aid, reason); 117 ath6kl_sta_cleanup(ar, i); 118 removed = 1; 119 break; 120 } 121 } 122 } 123 124 return removed; 125} 126 127enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 128{ 129 struct ath6kl *ar = devt; 130 return ar->ac2ep_map[ac]; 131} 132 133struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 134{ 135 struct ath6kl_cookie *cookie; 136 137 cookie = ar->cookie_list; 138 if (cookie != NULL) { 139 ar->cookie_list = cookie->arc_list_next; 140 ar->cookie_count--; 141 } 142 143 return cookie; 144} 145 146void ath6kl_cookie_init(struct ath6kl *ar) 147{ 148 u32 i; 149 150 ar->cookie_list = NULL; 151 ar->cookie_count = 0; 152 153 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 154 155 for (i = 0; i < MAX_COOKIE_NUM; i++) 156 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 157} 158 159void ath6kl_cookie_cleanup(struct ath6kl *ar) 160{ 161 ar->cookie_list = NULL; 162 ar->cookie_count = 0; 163} 164 165void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 166{ 167 /* Insert first */ 168 169 if (!ar || !cookie) 170 return; 171 172 cookie->arc_list_next = ar->cookie_list; 173 ar->cookie_list = cookie; 174 ar->cookie_count++; 175} 176 177/* set the window address register (using 4-byte register access ). */ 178static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 179{ 180 int status; 181 u8 addr_val[4]; 182 s32 i; 183 184 /* 185 * Write bytes 1,2,3 of the register to set the upper address bytes, 186 * the LSB is written last to initiate the access cycle 187 */ 188 189 for (i = 1; i <= 3; i++) { 190 /* 191 * Fill the buffer with the address byte value we want to 192 * hit 4 times. 193 */ 194 memset(addr_val, ((u8 *)&addr)[i], 4); 195 196 /* 197 * Hit each byte of the register address with a 4-byte 198 * write operation to the same address, this is a harmless 199 * operation. 200 */ 201 status = hif_read_write_sync(ar, reg_addr + i, addr_val, 202 4, HIF_WR_SYNC_BYTE_FIX); 203 if (status) 204 break; 205 } 206 207 if (status) { 208 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 209 addr, reg_addr); 210 return status; 211 } 212 213 /* 214 * Write the address register again, this time write the whole 215 * 4-byte value. The effect here is that the LSB write causes the 216 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 217 * effect since we are writing the same values again 218 */ 219 status = hif_read_write_sync(ar, reg_addr, (u8 *)(&addr), 220 4, HIF_WR_SYNC_BYTE_INC); 221 222 if (status) { 223 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 224 addr, reg_addr); 225 return status; 226 } 227 228 return 0; 229} 230 231/* 232 * Read from the ATH6KL through its diagnostic window. No cooperation from 233 * the Target is required for this. 234 */ 235int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 236{ 237 int status; 238 239 /* set window register to start read cycle */ 240 status = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, 241 *address); 242 243 if (status) 244 return status; 245 246 /* read the data */ 247 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 248 sizeof(u32), HIF_RD_SYNC_BYTE_INC); 249 if (status) { 250 ath6kl_err("failed to read from window data addr\n"); 251 return status; 252 } 253 254 return status; 255} 256 257 258/* 259 * Write to the ATH6KL through its diagnostic window. No cooperation from 260 * the Target is required for this. 261 */ 262static int ath6kl_write_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 263{ 264 int status; 265 266 /* set write data */ 267 status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 268 sizeof(u32), HIF_WR_SYNC_BYTE_INC); 269 if (status) { 270 ath6kl_err("failed to write 0x%x to window data addr\n", *data); 271 return status; 272 } 273 274 /* set window register, which starts the write cycle */ 275 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 276 *address); 277} 278 279int ath6kl_access_datadiag(struct ath6kl *ar, u32 address, 280 u8 *data, u32 length, bool read) 281{ 282 u32 count; 283 int status = 0; 284 285 for (count = 0; count < length; count += 4, address += 4) { 286 if (read) { 287 status = ath6kl_read_reg_diag(ar, &address, 288 (u32 *) &data[count]); 289 if (status) 290 break; 291 } else { 292 status = ath6kl_write_reg_diag(ar, &address, 293 (u32 *) &data[count]); 294 if (status) 295 break; 296 } 297 } 298 299 return status; 300} 301 302/* FIXME: move to a better place, target.h? */ 303#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 304#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 305 306static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 307 bool wait_fot_compltn, bool cold_reset) 308{ 309 int status = 0; 310 u32 address; 311 u32 data; 312 313 if (target_type != TARGET_TYPE_AR6003 && 314 target_type != TARGET_TYPE_AR6004) 315 return; 316 317 data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; 318 319 switch (target_type) { 320 case TARGET_TYPE_AR6003: 321 address = AR6003_RESET_CONTROL_ADDRESS; 322 break; 323 case TARGET_TYPE_AR6004: 324 address = AR6004_RESET_CONTROL_ADDRESS; 325 break; 326 default: 327 address = AR6003_RESET_CONTROL_ADDRESS; 328 break; 329 } 330 331 status = ath6kl_write_reg_diag(ar, &address, &data); 332 333 if (status) 334 ath6kl_err("failed to reset target\n"); 335} 336 337void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 338 bool get_dbglogs) 339{ 340 struct ath6kl *ar = ath6kl_priv(dev); 341 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 342 bool discon_issued; 343 344 netif_stop_queue(dev); 345 346 /* disable the target and the interrupts associated with it */ 347 if (test_bit(WMI_READY, &ar->flag)) { 348 discon_issued = (test_bit(CONNECTED, &ar->flag) || 349 test_bit(CONNECT_PEND, &ar->flag)); 350 ath6kl_disconnect(ar); 351 if (!keep_profile) 352 ath6kl_init_profile_info(ar); 353 354 del_timer(&ar->disconnect_timer); 355 356 clear_bit(WMI_READY, &ar->flag); 357 ath6kl_wmi_shutdown(ar->wmi); 358 clear_bit(WMI_ENABLED, &ar->flag); 359 ar->wmi = NULL; 360 361 /* 362 * After wmi_shudown all WMI events will be dropped. We 363 * need to cleanup the buffers allocated in AP mode and 364 * give disconnect notification to stack, which usually 365 * happens in the disconnect_event. Simulate the disconnect 366 * event by calling the function directly. Sometimes 367 * disconnect_event will be received when the debug logs 368 * are collected. 369 */ 370 if (discon_issued) 371 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 372 (ar->nw_type & AP_NETWORK) ? 373 bcast_mac : ar->bssid, 374 0, NULL, 0); 375 376 ar->user_key_ctrl = 0; 377 378 } else { 379 ath6kl_dbg(ATH6KL_DBG_TRC, 380 "%s: wmi is not ready 0x%p 0x%p\n", 381 __func__, ar, ar->wmi); 382 383 /* Shut down WMI if we have started it */ 384 if (test_bit(WMI_ENABLED, &ar->flag)) { 385 ath6kl_dbg(ATH6KL_DBG_TRC, 386 "%s: shut down wmi\n", __func__); 387 ath6kl_wmi_shutdown(ar->wmi); 388 clear_bit(WMI_ENABLED, &ar->flag); 389 ar->wmi = NULL; 390 } 391 } 392 393 if (ar->htc_target) { 394 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 395 ath6kl_htc_stop(ar->htc_target); 396 } 397 398 /* 399 * Try to reset the device if we can. The driver may have been 400 * configure NOT to reset the target during a debug session. 401 */ 402 ath6kl_dbg(ATH6KL_DBG_TRC, 403 "attempting to reset target on instance destroy\n"); 404 ath6kl_reset_device(ar, ar->target_type, true, true); 405} 406 407static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 408{ 409 u8 index; 410 u8 keyusage; 411 412 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 413 if (ar->wep_key_list[index].key_len) { 414 keyusage = GROUP_USAGE; 415 if (index == ar->def_txkey_index) 416 keyusage |= TX_USAGE; 417 418 ath6kl_wmi_addkey_cmd(ar->wmi, 419 index, 420 WEP_CRYPT, 421 keyusage, 422 ar->wep_key_list[index].key_len, 423 NULL, 424 ar->wep_key_list[index].key, 425 KEY_OP_INIT_VAL, NULL, 426 NO_SYNC_WMIFLAG); 427 } 428 } 429} 430 431static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, 432 u16 listen_int, u16 beacon_int, 433 u8 assoc_req_len, u8 *assoc_info) 434{ 435 struct net_device *dev = ar->net_dev; 436 u8 *ies = NULL, *wpa_ie = NULL, *pos; 437 size_t ies_len = 0; 438 struct station_info sinfo; 439 struct ath6kl_req_key *ik; 440 int res; 441 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 442 443 if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { 444 ik = &ar->ap_mode_bkey; 445 446 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", 447 channel); 448 449 switch (ar->auth_mode) { 450 case NONE_AUTH: 451 if (ar->prwise_crypto == WEP_CRYPT) 452 ath6kl_install_static_wep_keys(ar); 453 break; 454 case WPA_PSK_AUTH: 455 case WPA2_PSK_AUTH: 456 case (WPA_PSK_AUTH|WPA2_PSK_AUTH): 457 if (!ik->valid) 458 break; 459 460 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 461 "the initial group key for AP mode\n"); 462 memset(key_rsc, 0, sizeof(key_rsc)); 463 res = ath6kl_wmi_addkey_cmd( 464 ar->wmi, ik->key_index, ik->key_type, 465 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 466 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 467 if (res) { 468 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 469 "addkey failed: %d\n", res); 470 } 471 break; 472 } 473 474 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 475 set_bit(CONNECTED, &ar->flag); 476 netif_carrier_on(ar->net_dev); 477 return; 478 } 479 480 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", 481 bssid, channel); 482 483 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 484 struct ieee80211_mgmt *mgmt = 485 (struct ieee80211_mgmt *) assoc_info; 486 if (ieee80211_is_assoc_req(mgmt->frame_control) && 487 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 488 sizeof(mgmt->u.assoc_req)) { 489 ies = mgmt->u.assoc_req.variable; 490 ies_len = assoc_info + assoc_req_len - ies; 491 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 492 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 493 + sizeof(mgmt->u.reassoc_req)) { 494 ies = mgmt->u.reassoc_req.variable; 495 ies_len = assoc_info + assoc_req_len - ies; 496 } 497 } 498 499 pos = ies; 500 while (pos && pos + 1 < ies + ies_len) { 501 if (pos + 2 + pos[1] > ies + ies_len) 502 break; 503 if (pos[0] == WLAN_EID_RSN) 504 wpa_ie = pos; /* RSN IE */ 505 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 506 pos[1] >= 4 && 507 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 508 if (pos[5] == 0x01) 509 wpa_ie = pos; /* WPA IE */ 510 else if (pos[5] == 0x04) { 511 wpa_ie = pos; /* WPS IE */ 512 break; /* overrides WPA/RSN IE */ 513 } 514 } 515 pos += 2 + pos[1]; 516 } 517 518 ath6kl_add_new_sta(ar, bssid, channel, wpa_ie, 519 wpa_ie ? 2 + wpa_ie[1] : 0, 520 listen_int & 0xFF, beacon_int, 521 (listen_int >> 8) & 0xFF); 522 523 /* send event to application */ 524 memset(&sinfo, 0, sizeof(sinfo)); 525 526 /* TODO: sinfo.generation */ 527 528 sinfo.assoc_req_ies = ies; 529 sinfo.assoc_req_ies_len = ies_len; 530 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 531 532 cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); 533 534 netif_wake_queue(ar->net_dev); 535 536 return; 537} 538 539/* Functions for Tx credit handling */ 540void ath6k_credit_init(struct htc_credit_state_info *cred_info, 541 struct list_head *ep_list, 542 int tot_credits) 543{ 544 struct htc_endpoint_credit_dist *cur_ep_dist; 545 int count; 546 547 cred_info->cur_free_credits = tot_credits; 548 cred_info->total_avail_credits = tot_credits; 549 550 list_for_each_entry(cur_ep_dist, ep_list, list) { 551 if (cur_ep_dist->endpoint == ENDPOINT_0) 552 continue; 553 554 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 555 556 if (tot_credits > 4) 557 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 558 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 559 ath6kl_deposit_credit_to_ep(cred_info, 560 cur_ep_dist, 561 cur_ep_dist->cred_min); 562 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 563 } 564 565 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 566 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 567 cur_ep_dist->cred_min); 568 /* 569 * Control service is always marked active, it 570 * never goes inactive EVER. 571 */ 572 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 573 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 574 /* this is the lowest priority data endpoint */ 575 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 576 577 /* 578 * Streams have to be created (explicit | implicit) for all 579 * kinds of traffic. BE endpoints are also inactive in the 580 * beginning. When BE traffic starts it creates implicit 581 * streams that redistributes credits. 582 * 583 * Note: all other endpoints have minimums set but are 584 * initially given NO credits. credits will be distributed 585 * as traffic activity demands 586 */ 587 } 588 589 WARN_ON(cred_info->cur_free_credits <= 0); 590 591 list_for_each_entry(cur_ep_dist, ep_list, list) { 592 if (cur_ep_dist->endpoint == ENDPOINT_0) 593 continue; 594 595 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 596 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 597 else { 598 /* 599 * For the remaining data endpoints, we assume that 600 * each cred_per_msg are the same. We use a simple 601 * calculation here, we take the remaining credits 602 * and determine how many max messages this can 603 * cover and then set each endpoint's normal value 604 * equal to 3/4 this amount. 605 */ 606 count = (cred_info->cur_free_credits / 607 cur_ep_dist->cred_per_msg) 608 * cur_ep_dist->cred_per_msg; 609 count = (count * 3) >> 2; 610 count = max(count, cur_ep_dist->cred_per_msg); 611 cur_ep_dist->cred_norm = count; 612 613 } 614 } 615} 616 617/* initialize and setup credit distribution */ 618int ath6k_setup_credit_dist(void *htc_handle, 619 struct htc_credit_state_info *cred_info) 620{ 621 u16 servicepriority[5]; 622 623 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 624 625 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 626 servicepriority[1] = WMI_DATA_VO_SVC; 627 servicepriority[2] = WMI_DATA_VI_SVC; 628 servicepriority[3] = WMI_DATA_BE_SVC; 629 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 630 631 /* set priority list */ 632 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 633 634 return 0; 635} 636 637/* reduce an ep's credits back to a set limit */ 638static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 639 struct htc_endpoint_credit_dist *ep_dist, 640 int limit) 641{ 642 int credits; 643 644 ep_dist->cred_assngd = limit; 645 646 if (ep_dist->credits <= limit) 647 return; 648 649 credits = ep_dist->credits - limit; 650 ep_dist->credits -= credits; 651 cred_info->cur_free_credits += credits; 652} 653 654static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 655 struct list_head *epdist_list) 656{ 657 struct htc_endpoint_credit_dist *cur_dist_list; 658 659 list_for_each_entry(cur_dist_list, epdist_list, list) { 660 if (cur_dist_list->endpoint == ENDPOINT_0) 661 continue; 662 663 if (cur_dist_list->cred_to_dist > 0) { 664 cur_dist_list->credits += 665 cur_dist_list->cred_to_dist; 666 cur_dist_list->cred_to_dist = 0; 667 if (cur_dist_list->credits > 668 cur_dist_list->cred_assngd) 669 ath6k_reduce_credits(cred_info, 670 cur_dist_list, 671 cur_dist_list->cred_assngd); 672 673 if (cur_dist_list->credits > 674 cur_dist_list->cred_norm) 675 ath6k_reduce_credits(cred_info, cur_dist_list, 676 cur_dist_list->cred_norm); 677 678 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 679 if (cur_dist_list->txq_depth == 0) 680 ath6k_reduce_credits(cred_info, 681 cur_dist_list, 0); 682 } 683 } 684 } 685} 686 687/* 688 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 689 * question. 690 */ 691void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 692 struct htc_endpoint_credit_dist *ep_dist) 693{ 694 struct htc_endpoint_credit_dist *curdist_list; 695 int credits = 0; 696 int need; 697 698 if (ep_dist->svc_id == WMI_CONTROL_SVC) 699 goto out; 700 701 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 702 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 703 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 704 goto out; 705 706 /* 707 * For all other services, we follow a simple algorithm of: 708 * 709 * 1. checking the free pool for credits 710 * 2. checking lower priority endpoints for credits to take 711 */ 712 713 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 714 715 if (credits >= ep_dist->seek_cred) 716 goto out; 717 718 /* 719 * We don't have enough in the free pool, try taking away from 720 * lower priority services The rule for taking away credits: 721 * 722 * 1. Only take from lower priority endpoints 723 * 2. Only take what is allocated above the minimum (never 724 * starve an endpoint completely) 725 * 3. Only take what you need. 726 */ 727 728 list_for_each_entry_reverse(curdist_list, 729 &cred_info->lowestpri_ep_dist, 730 list) { 731 if (curdist_list == ep_dist) 732 break; 733 734 need = ep_dist->seek_cred - cred_info->cur_free_credits; 735 736 if ((curdist_list->cred_assngd - need) >= 737 curdist_list->cred_min) { 738 /* 739 * The current one has been allocated more than 740 * it's minimum and it has enough credits assigned 741 * above it's minimum to fulfill our need try to 742 * take away just enough to fulfill our need. 743 */ 744 ath6k_reduce_credits(cred_info, curdist_list, 745 curdist_list->cred_assngd - need); 746 747 if (cred_info->cur_free_credits >= 748 ep_dist->seek_cred) 749 break; 750 } 751 752 if (curdist_list->endpoint == ENDPOINT_0) 753 break; 754 } 755 756 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 757 758out: 759 /* did we find some credits? */ 760 if (credits) 761 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 762 763 ep_dist->seek_cred = 0; 764} 765 766/* redistribute credits based on activity change */ 767static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 768 struct list_head *ep_dist_list) 769{ 770 struct htc_endpoint_credit_dist *curdist_list; 771 772 list_for_each_entry(curdist_list, ep_dist_list, list) { 773 if (curdist_list->endpoint == ENDPOINT_0) 774 continue; 775 776 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 777 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 778 curdist_list->dist_flags |= HTC_EP_ACTIVE; 779 780 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 781 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 782 if (curdist_list->txq_depth == 0) 783 ath6k_reduce_credits(info, 784 curdist_list, 0); 785 else 786 ath6k_reduce_credits(info, 787 curdist_list, 788 curdist_list->cred_min); 789 } 790 } 791} 792 793/* 794 * 795 * This function is invoked whenever endpoints require credit 796 * distributions. A lock is held while this function is invoked, this 797 * function shall NOT block. The ep_dist_list is a list of distribution 798 * structures in prioritized order as defined by the call to the 799 * htc_set_credit_dist() api. 800 */ 801void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 802 struct list_head *ep_dist_list, 803 enum htc_credit_dist_reason reason) 804{ 805 switch (reason) { 806 case HTC_CREDIT_DIST_SEND_COMPLETE: 807 ath6k_credit_update(cred_info, ep_dist_list); 808 break; 809 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 810 ath6k_redistribute_credits(cred_info, ep_dist_list); 811 break; 812 default: 813 break; 814 } 815 816 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 817 WARN_ON(cred_info->cur_free_credits < 0); 818} 819 820void disconnect_timer_handler(unsigned long ptr) 821{ 822 struct net_device *dev = (struct net_device *)ptr; 823 struct ath6kl *ar = ath6kl_priv(dev); 824 825 ath6kl_init_profile_info(ar); 826 ath6kl_disconnect(ar); 827} 828 829void ath6kl_disconnect(struct ath6kl *ar) 830{ 831 if (test_bit(CONNECTED, &ar->flag) || 832 test_bit(CONNECT_PEND, &ar->flag)) { 833 ath6kl_wmi_disconnect_cmd(ar->wmi); 834 /* 835 * Disconnect command is issued, clear the connect pending 836 * flag. The connected flag will be cleared in 837 * disconnect event notification. 838 */ 839 clear_bit(CONNECT_PEND, &ar->flag); 840 } 841} 842 843void ath6kl_deep_sleep_enable(struct ath6kl *ar) 844{ 845 switch (ar->sme_state) { 846 case SME_CONNECTING: 847 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 848 NULL, 0, 849 WLAN_STATUS_UNSPECIFIED_FAILURE, 850 GFP_KERNEL); 851 break; 852 case SME_CONNECTED: 853 default: 854 /* 855 * FIXME: oddly enough smeState is in DISCONNECTED during 856 * suspend, why? Need to send disconnected event in that 857 * state. 858 */ 859 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 860 break; 861 } 862 863 if (test_bit(CONNECTED, &ar->flag) || 864 test_bit(CONNECT_PEND, &ar->flag)) 865 ath6kl_wmi_disconnect_cmd(ar->wmi); 866 867 ar->sme_state = SME_DISCONNECTED; 868 869 /* disable scanning */ 870 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 871 0, 0) != 0) 872 printk(KERN_WARNING "ath6kl: failed to disable scan " 873 "during suspend\n"); 874 875 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 876} 877 878/* WMI Event handlers */ 879 880static const char *get_hw_id_string(u32 id) 881{ 882 switch (id) { 883 case AR6003_REV1_VERSION: 884 return "1.0"; 885 case AR6003_REV2_VERSION: 886 return "2.0"; 887 case AR6003_REV3_VERSION: 888 return "2.1.1"; 889 default: 890 return "unknown"; 891 } 892} 893 894void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 895{ 896 struct ath6kl *ar = devt; 897 struct net_device *dev = ar->net_dev; 898 899 memcpy(dev->dev_addr, datap, ETH_ALEN); 900 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 901 __func__, dev->dev_addr); 902 903 ar->version.wlan_ver = sw_ver; 904 ar->version.abi_ver = abi_ver; 905 906 snprintf(ar->wdev->wiphy->fw_version, 907 sizeof(ar->wdev->wiphy->fw_version), 908 "%u.%u.%u.%u", 909 (ar->version.wlan_ver & 0xf0000000) >> 28, 910 (ar->version.wlan_ver & 0x0f000000) >> 24, 911 (ar->version.wlan_ver & 0x00ff0000) >> 16, 912 (ar->version.wlan_ver & 0x0000ffff)); 913 914 /* indicate to the waiting thread that the ready event was received */ 915 set_bit(WMI_READY, &ar->flag); 916 wake_up(&ar->event_wq); 917 918 ath6kl_info("hw %s fw %s%s\n", 919 get_hw_id_string(ar->wdev->wiphy->hw_version), 920 ar->wdev->wiphy->fw_version, 921 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 922} 923 924void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 925{ 926 ath6kl_cfg80211_scan_complete_event(ar, status); 927 928 if (!ar->usr_bss_filter) 929 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 930 931 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 932} 933 934void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 935 u16 listen_int, u16 beacon_int, 936 enum network_type net_type, u8 beacon_ie_len, 937 u8 assoc_req_len, u8 assoc_resp_len, 938 u8 *assoc_info) 939{ 940 unsigned long flags; 941 942 if (ar->nw_type == AP_NETWORK) { 943 ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, 944 beacon_int, assoc_req_len, 945 assoc_info + beacon_ie_len); 946 return; 947 } 948 949 ath6kl_cfg80211_connect_event(ar, channel, bssid, 950 listen_int, beacon_int, 951 net_type, beacon_ie_len, 952 assoc_req_len, assoc_resp_len, 953 assoc_info); 954 955 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 956 ar->bss_ch = channel; 957 958 if ((ar->nw_type == INFRA_NETWORK)) 959 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 960 ar->listen_intvl_b); 961 962 netif_wake_queue(ar->net_dev); 963 964 /* Update connect & link status atomically */ 965 spin_lock_irqsave(&ar->lock, flags); 966 set_bit(CONNECTED, &ar->flag); 967 clear_bit(CONNECT_PEND, &ar->flag); 968 netif_carrier_on(ar->net_dev); 969 spin_unlock_irqrestore(&ar->lock, flags); 970 971 aggr_reset_state(ar->aggr_cntxt); 972 ar->reconnect_flag = 0; 973 974 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 975 memset(ar->node_map, 0, sizeof(ar->node_map)); 976 ar->node_num = 0; 977 ar->next_ep_id = ENDPOINT_2; 978 } 979 980 if (!ar->usr_bss_filter) 981 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 982} 983 984void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 985{ 986 struct ath6kl_sta *sta; 987 u8 tsc[6]; 988 /* 989 * For AP case, keyid will have aid of STA which sent pkt with 990 * MIC error. Use this aid to get MAC & send it to hostapd. 991 */ 992 if (ar->nw_type == AP_NETWORK) { 993 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 994 if (!sta) 995 return; 996 997 ath6kl_dbg(ATH6KL_DBG_TRC, 998 "ap tkip mic error received from aid=%d\n", keyid); 999 1000 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1001 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1002 NL80211_KEYTYPE_PAIRWISE, keyid, 1003 tsc, GFP_KERNEL); 1004 } else 1005 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1006 1007} 1008 1009static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1010{ 1011 struct wmi_target_stats *tgt_stats = 1012 (struct wmi_target_stats *) ptr; 1013 struct target_stats *stats = &ar->target_stats; 1014 struct tkip_ccmp_stats *ccmp_stats; 1015 struct bss *conn_bss = NULL; 1016 struct cserv_stats *c_stats; 1017 u8 ac; 1018 1019 if (len < sizeof(*tgt_stats)) 1020 return; 1021 1022 /* update the RSSI of the connected bss */ 1023 if (test_bit(CONNECTED, &ar->flag)) { 1024 conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); 1025 if (conn_bss) { 1026 c_stats = &tgt_stats->cserv_stats; 1027 conn_bss->ni_rssi = 1028 a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); 1029 conn_bss->ni_snr = 1030 tgt_stats->cserv_stats.cs_ave_beacon_snr; 1031 ath6kl_wmi_node_return(ar->wmi, conn_bss); 1032 } 1033 } 1034 1035 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1036 1037 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1038 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1039 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1040 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1041 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1042 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1043 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1044 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1045 stats->tx_rts_success_cnt += 1046 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1047 1048 for (ac = 0; ac < WMM_NUM_AC; ac++) 1049 stats->tx_pkt_per_ac[ac] += 1050 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1051 1052 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1053 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1054 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1055 stats->tx_mult_retry_cnt += 1056 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1057 stats->tx_rts_fail_cnt += 1058 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1059 stats->tx_ucast_rate = 1060 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1061 1062 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1063 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1064 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1065 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1066 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1067 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1068 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1069 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1070 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1071 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1072 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1073 stats->rx_key_cache_miss += 1074 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1075 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1076 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1077 stats->rx_ucast_rate = 1078 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1079 1080 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1081 1082 stats->tkip_local_mic_fail += 1083 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1084 stats->tkip_cnter_measures_invoked += 1085 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1086 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1087 1088 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1089 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1090 1091 stats->pwr_save_fail_cnt += 1092 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1093 stats->noise_floor_calib = 1094 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1095 1096 stats->cs_bmiss_cnt += 1097 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1098 stats->cs_low_rssi_cnt += 1099 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1100 stats->cs_connect_cnt += 1101 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1102 stats->cs_discon_cnt += 1103 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1104 1105 stats->cs_ave_beacon_rssi = 1106 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1107 1108 stats->cs_last_roam_msec = 1109 tgt_stats->cserv_stats.cs_last_roam_msec; 1110 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1111 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1112 1113 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1114 1115 stats->wow_pkt_dropped += 1116 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1117 stats->wow_host_pkt_wakeups += 1118 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1119 stats->wow_host_evt_wakeups += 1120 tgt_stats->wow_stats.wow_host_evt_wakeups; 1121 stats->wow_evt_discarded += 1122 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1123 1124 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1125 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1126 wake_up(&ar->event_wq); 1127 } 1128} 1129 1130static void ath6kl_add_le32(__le32 *var, __le32 val) 1131{ 1132 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1133} 1134 1135void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1136{ 1137 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1138 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1139 struct wmi_per_sta_stat *st_ap, *st_p; 1140 u8 ac; 1141 1142 if (ar->nw_type == AP_NETWORK) { 1143 if (len < sizeof(*p)) 1144 return; 1145 1146 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1147 st_ap = &ap->sta[ac]; 1148 st_p = &p->sta[ac]; 1149 1150 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1151 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1152 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1153 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1154 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1155 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1156 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1157 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1158 } 1159 1160 } else { 1161 ath6kl_update_target_stats(ar, ptr, len); 1162 } 1163} 1164 1165void ath6kl_wakeup_event(void *dev) 1166{ 1167 struct ath6kl *ar = (struct ath6kl *) dev; 1168 1169 wake_up(&ar->event_wq); 1170} 1171 1172void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1173{ 1174 struct ath6kl *ar = (struct ath6kl *) devt; 1175 1176 ar->tx_pwr = tx_pwr; 1177 wake_up(&ar->event_wq); 1178} 1179 1180void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1181{ 1182 struct ath6kl_sta *conn; 1183 struct sk_buff *skb; 1184 bool psq_empty = false; 1185 1186 conn = ath6kl_find_sta_by_aid(ar, aid); 1187 1188 if (!conn) 1189 return; 1190 /* 1191 * Send out a packet queued on ps queue. When the ps queue 1192 * becomes empty update the PVB for this station. 1193 */ 1194 spin_lock_bh(&conn->psq_lock); 1195 psq_empty = skb_queue_empty(&conn->psq); 1196 spin_unlock_bh(&conn->psq_lock); 1197 1198 if (psq_empty) 1199 /* TODO: Send out a NULL data frame */ 1200 return; 1201 1202 spin_lock_bh(&conn->psq_lock); 1203 skb = skb_dequeue(&conn->psq); 1204 spin_unlock_bh(&conn->psq_lock); 1205 1206 conn->sta_flags |= STA_PS_POLLED; 1207 ath6kl_data_tx(skb, ar->net_dev); 1208 conn->sta_flags &= ~STA_PS_POLLED; 1209 1210 spin_lock_bh(&conn->psq_lock); 1211 psq_empty = skb_queue_empty(&conn->psq); 1212 spin_unlock_bh(&conn->psq_lock); 1213 1214 if (psq_empty) 1215 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1216} 1217 1218void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1219{ 1220 bool mcastq_empty = false; 1221 struct sk_buff *skb; 1222 1223 /* 1224 * If there are no associated STAs, ignore the DTIM expiry event. 1225 * There can be potential race conditions where the last associated 1226 * STA may disconnect & before the host could clear the 'Indicate 1227 * DTIM' request to the firmware, the firmware would have just 1228 * indicated a DTIM expiry event. The race is between 'clear DTIM 1229 * expiry cmd' going from the host to the firmware & the DTIM 1230 * expiry event happening from the firmware to the host. 1231 */ 1232 if (!ar->sta_list_index) 1233 return; 1234 1235 spin_lock_bh(&ar->mcastpsq_lock); 1236 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1237 spin_unlock_bh(&ar->mcastpsq_lock); 1238 1239 if (mcastq_empty) 1240 return; 1241 1242 /* set the STA flag to dtim_expired for the frame to go out */ 1243 set_bit(DTIM_EXPIRED, &ar->flag); 1244 1245 spin_lock_bh(&ar->mcastpsq_lock); 1246 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1247 spin_unlock_bh(&ar->mcastpsq_lock); 1248 1249 ath6kl_data_tx(skb, ar->net_dev); 1250 1251 spin_lock_bh(&ar->mcastpsq_lock); 1252 } 1253 spin_unlock_bh(&ar->mcastpsq_lock); 1254 1255 clear_bit(DTIM_EXPIRED, &ar->flag); 1256 1257 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1258 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1259} 1260 1261void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1262 u8 assoc_resp_len, u8 *assoc_info, 1263 u16 prot_reason_status) 1264{ 1265 struct bss *wmi_ssid_node = NULL; 1266 unsigned long flags; 1267 1268 if (ar->nw_type == AP_NETWORK) { 1269 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1270 return; 1271 1272 /* if no more associated STAs, empty the mcast PS q */ 1273 if (ar->sta_list_index == 0) { 1274 spin_lock_bh(&ar->mcastpsq_lock); 1275 skb_queue_purge(&ar->mcastpsq); 1276 spin_unlock_bh(&ar->mcastpsq_lock); 1277 1278 /* clear the LSB of the TIM IE's BitMapCtl field */ 1279 if (test_bit(WMI_READY, &ar->flag)) 1280 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1281 } 1282 1283 if (!is_broadcast_ether_addr(bssid)) { 1284 /* send event to application */ 1285 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1286 } 1287 1288 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) 1289 clear_bit(CONNECTED, &ar->flag); 1290 return; 1291 } 1292 1293 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1294 assoc_resp_len, assoc_info, 1295 prot_reason_status); 1296 1297 aggr_reset_state(ar->aggr_cntxt); 1298 1299 del_timer(&ar->disconnect_timer); 1300 1301 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1302 "disconnect reason is %d\n", reason); 1303 1304 /* 1305 * If the event is due to disconnect cmd from the host, only they 1306 * the target would stop trying to connect. Under any other 1307 * condition, target would keep trying to connect. 1308 */ 1309 if (reason == DISCONNECT_CMD) { 1310 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1311 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1312 } else { 1313 set_bit(CONNECT_PEND, &ar->flag); 1314 if (((reason == ASSOC_FAILED) && 1315 (prot_reason_status == 0x11)) || 1316 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1317 && (ar->reconnect_flag == 1))) { 1318 set_bit(CONNECTED, &ar->flag); 1319 return; 1320 } 1321 } 1322 1323 if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { 1324 ath6kl_wmi_node_free(ar->wmi, bssid); 1325 1326 /* 1327 * In case any other same SSID nodes are present remove it, 1328 * since those nodes also not available now. 1329 */ 1330 do { 1331 /* 1332 * Find the nodes based on SSID and remove it 1333 * 1334 * Note: This case will not work out for 1335 * Hidden-SSID 1336 */ 1337 wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, 1338 ar->ssid, 1339 ar->ssid_len, 1340 false, 1341 true); 1342 1343 if (wmi_ssid_node) 1344 ath6kl_wmi_node_free(ar->wmi, 1345 wmi_ssid_node->ni_macaddr); 1346 1347 } while (wmi_ssid_node); 1348 } 1349 1350 /* update connect & link status atomically */ 1351 spin_lock_irqsave(&ar->lock, flags); 1352 clear_bit(CONNECTED, &ar->flag); 1353 netif_carrier_off(ar->net_dev); 1354 spin_unlock_irqrestore(&ar->lock, flags); 1355 1356 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1357 ar->reconnect_flag = 0; 1358 1359 if (reason != CSERV_DISCONNECT) 1360 ar->user_key_ctrl = 0; 1361 1362 netif_stop_queue(ar->net_dev); 1363 memset(ar->bssid, 0, sizeof(ar->bssid)); 1364 ar->bss_ch = 0; 1365 1366 ath6kl_tx_data_cleanup(ar); 1367} 1368 1369static int ath6kl_open(struct net_device *dev) 1370{ 1371 struct ath6kl *ar = ath6kl_priv(dev); 1372 unsigned long flags; 1373 1374 spin_lock_irqsave(&ar->lock, flags); 1375 1376 set_bit(WLAN_ENABLED, &ar->flag); 1377 1378 if (test_bit(CONNECTED, &ar->flag)) { 1379 netif_carrier_on(dev); 1380 netif_wake_queue(dev); 1381 } else 1382 netif_carrier_off(dev); 1383 1384 spin_unlock_irqrestore(&ar->lock, flags); 1385 1386 return 0; 1387} 1388 1389static int ath6kl_close(struct net_device *dev) 1390{ 1391 struct ath6kl *ar = ath6kl_priv(dev); 1392 1393 netif_stop_queue(dev); 1394 1395 ath6kl_disconnect(ar); 1396 1397 if (test_bit(WMI_READY, &ar->flag)) { 1398 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1399 0, 0, 0)) 1400 return -EIO; 1401 1402 clear_bit(WLAN_ENABLED, &ar->flag); 1403 } 1404 1405 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1406 1407 return 0; 1408} 1409 1410static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1411{ 1412 struct ath6kl *ar = ath6kl_priv(dev); 1413 1414 return &ar->net_stats; 1415} 1416 1417static struct net_device_ops ath6kl_netdev_ops = { 1418 .ndo_open = ath6kl_open, 1419 .ndo_stop = ath6kl_close, 1420 .ndo_start_xmit = ath6kl_data_tx, 1421 .ndo_get_stats = ath6kl_get_stats, 1422}; 1423 1424void init_netdev(struct net_device *dev) 1425{ 1426 dev->netdev_ops = &ath6kl_netdev_ops; 1427 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1428 1429 dev->needed_headroom = ETH_HLEN; 1430 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1431 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1432 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1433 1434 return; 1435} 1436