main.c revision bc07ddb29a7b71ad009bcd84bee4c93908cf22b6
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 hardware through its diagnostic window. No cooperation 233 * from the firmware is required for this. 234 */ 235int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 236{ 237 int ret; 238 239 /* set window register to start read cycle */ 240 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address); 241 if (ret) 242 return ret; 243 244 /* read the data */ 245 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value, 246 sizeof(*value), HIF_RD_SYNC_BYTE_INC); 247 if (ret) { 248 ath6kl_warn("failed to read32 through diagnose window: %d\n", 249 ret); 250 return ret; 251 } 252 253 return 0; 254} 255 256/* 257 * Write to the ATH6KL through its diagnostic window. No cooperation from 258 * the Target is required for this. 259 */ 260static int ath6kl_diag_write32(struct ath6kl *ar, u32 address, u32 value) 261{ 262 int ret; 263 264 /* set write data */ 265 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value, 266 sizeof(value), HIF_WR_SYNC_BYTE_INC); 267 if (ret) { 268 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 269 address, value); 270 return ret; 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_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 279{ 280 u32 count, *buf = data; 281 int ret; 282 283 if (WARN_ON(length % 4)) 284 return -EINVAL; 285 286 for (count = 0; count < length / 4; count++, address += 4) { 287 ret = ath6kl_diag_read32(ar, address, &buf[count]); 288 if (ret) 289 return ret; 290 } 291 292 return 0; 293} 294 295int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 296{ 297 u32 count, *buf = data; 298 int ret; 299 300 if (WARN_ON(length % 4)) 301 return -EINVAL; 302 303 for (count = 0; count < length / 4; count++, address += 4) { 304 ret = ath6kl_diag_write32(ar, address, buf[count]); 305 if (ret) 306 return ret; 307 } 308 309 return 0; 310} 311 312int ath6kl_read_fwlogs(struct ath6kl *ar) 313{ 314 struct ath6kl_dbglog_hdr debug_hdr; 315 struct ath6kl_dbglog_buf debug_buf; 316 u32 address, length, dropped, firstbuf, debug_hdr_addr; 317 int ret = 0, loop; 318 u8 *buf; 319 320 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 321 if (!buf) 322 return -ENOMEM; 323 324 address = TARG_VTOP(ar->target_type, 325 ath6kl_get_hi_item_addr(ar, 326 HI_ITEM(hi_dbglog_hdr))); 327 328 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 329 if (ret) 330 goto out; 331 332 /* Get the contents of the ring buffer */ 333 if (debug_hdr_addr == 0) { 334 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 335 ret = -EINVAL; 336 goto out; 337 } 338 339 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 340 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 341 342 address = TARG_VTOP(ar->target_type, 343 le32_to_cpu(debug_hdr.dbuf_addr)); 344 firstbuf = address; 345 dropped = le32_to_cpu(debug_hdr.dropped); 346 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 347 348 loop = 100; 349 350 do { 351 address = TARG_VTOP(ar->target_type, 352 le32_to_cpu(debug_buf.buffer_addr)); 353 length = le32_to_cpu(debug_buf.length); 354 355 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 356 le32_to_cpu(debug_buf.bufsize))) { 357 length = ALIGN(length, 4); 358 359 ret = ath6kl_diag_read(ar, address, 360 buf, length); 361 if (ret) 362 goto out; 363 364 ath6kl_debug_fwlog_event(ar, buf, length); 365 } 366 367 address = TARG_VTOP(ar->target_type, 368 le32_to_cpu(debug_buf.next)); 369 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 370 if (ret) 371 goto out; 372 373 loop--; 374 375 if (WARN_ON(loop == 0)) { 376 ret = -ETIMEDOUT; 377 goto out; 378 } 379 } while (address != firstbuf); 380 381out: 382 kfree(buf); 383 384 return ret; 385} 386 387/* FIXME: move to a better place, target.h? */ 388#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 389#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 390 391static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 392 bool wait_fot_compltn, bool cold_reset) 393{ 394 int status = 0; 395 u32 address; 396 u32 data; 397 398 if (target_type != TARGET_TYPE_AR6003 && 399 target_type != TARGET_TYPE_AR6004) 400 return; 401 402 data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; 403 404 switch (target_type) { 405 case TARGET_TYPE_AR6003: 406 address = AR6003_RESET_CONTROL_ADDRESS; 407 break; 408 case TARGET_TYPE_AR6004: 409 address = AR6004_RESET_CONTROL_ADDRESS; 410 break; 411 default: 412 address = AR6003_RESET_CONTROL_ADDRESS; 413 break; 414 } 415 416 status = ath6kl_diag_write32(ar, address, data); 417 418 if (status) 419 ath6kl_err("failed to reset target\n"); 420} 421 422void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 423 bool get_dbglogs) 424{ 425 struct ath6kl *ar = ath6kl_priv(dev); 426 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 427 bool discon_issued; 428 429 netif_stop_queue(dev); 430 431 /* disable the target and the interrupts associated with it */ 432 if (test_bit(WMI_READY, &ar->flag)) { 433 discon_issued = (test_bit(CONNECTED, &ar->flag) || 434 test_bit(CONNECT_PEND, &ar->flag)); 435 ath6kl_disconnect(ar); 436 if (!keep_profile) 437 ath6kl_init_profile_info(ar); 438 439 del_timer(&ar->disconnect_timer); 440 441 clear_bit(WMI_READY, &ar->flag); 442 ath6kl_wmi_shutdown(ar->wmi); 443 clear_bit(WMI_ENABLED, &ar->flag); 444 ar->wmi = NULL; 445 446 /* 447 * After wmi_shudown all WMI events will be dropped. We 448 * need to cleanup the buffers allocated in AP mode and 449 * give disconnect notification to stack, which usually 450 * happens in the disconnect_event. Simulate the disconnect 451 * event by calling the function directly. Sometimes 452 * disconnect_event will be received when the debug logs 453 * are collected. 454 */ 455 if (discon_issued) 456 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 457 (ar->nw_type & AP_NETWORK) ? 458 bcast_mac : ar->bssid, 459 0, NULL, 0); 460 461 ar->user_key_ctrl = 0; 462 463 } else { 464 ath6kl_dbg(ATH6KL_DBG_TRC, 465 "%s: wmi is not ready 0x%p 0x%p\n", 466 __func__, ar, ar->wmi); 467 468 /* Shut down WMI if we have started it */ 469 if (test_bit(WMI_ENABLED, &ar->flag)) { 470 ath6kl_dbg(ATH6KL_DBG_TRC, 471 "%s: shut down wmi\n", __func__); 472 ath6kl_wmi_shutdown(ar->wmi); 473 clear_bit(WMI_ENABLED, &ar->flag); 474 ar->wmi = NULL; 475 } 476 } 477 478 if (ar->htc_target) { 479 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 480 ath6kl_htc_stop(ar->htc_target); 481 } 482 483 /* 484 * Try to reset the device if we can. The driver may have been 485 * configure NOT to reset the target during a debug session. 486 */ 487 ath6kl_dbg(ATH6KL_DBG_TRC, 488 "attempting to reset target on instance destroy\n"); 489 ath6kl_reset_device(ar, ar->target_type, true, true); 490} 491 492static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 493{ 494 u8 index; 495 u8 keyusage; 496 497 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 498 if (ar->wep_key_list[index].key_len) { 499 keyusage = GROUP_USAGE; 500 if (index == ar->def_txkey_index) 501 keyusage |= TX_USAGE; 502 503 ath6kl_wmi_addkey_cmd(ar->wmi, 504 index, 505 WEP_CRYPT, 506 keyusage, 507 ar->wep_key_list[index].key_len, 508 NULL, 509 ar->wep_key_list[index].key, 510 KEY_OP_INIT_VAL, NULL, 511 NO_SYNC_WMIFLAG); 512 } 513 } 514} 515 516static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, 517 u16 listen_int, u16 beacon_int, 518 u8 assoc_req_len, u8 *assoc_info) 519{ 520 struct net_device *dev = ar->net_dev; 521 u8 *ies = NULL, *wpa_ie = NULL, *pos; 522 size_t ies_len = 0; 523 struct station_info sinfo; 524 struct ath6kl_req_key *ik; 525 int res; 526 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 527 528 if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { 529 ik = &ar->ap_mode_bkey; 530 531 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", 532 channel); 533 534 switch (ar->auth_mode) { 535 case NONE_AUTH: 536 if (ar->prwise_crypto == WEP_CRYPT) 537 ath6kl_install_static_wep_keys(ar); 538 break; 539 case WPA_PSK_AUTH: 540 case WPA2_PSK_AUTH: 541 case (WPA_PSK_AUTH|WPA2_PSK_AUTH): 542 if (!ik->valid) 543 break; 544 545 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 546 "the initial group key for AP mode\n"); 547 memset(key_rsc, 0, sizeof(key_rsc)); 548 res = ath6kl_wmi_addkey_cmd( 549 ar->wmi, ik->key_index, ik->key_type, 550 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 551 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 552 if (res) { 553 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 554 "addkey failed: %d\n", res); 555 } 556 break; 557 } 558 559 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 560 set_bit(CONNECTED, &ar->flag); 561 netif_carrier_on(ar->net_dev); 562 return; 563 } 564 565 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", 566 bssid, channel); 567 568 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 569 struct ieee80211_mgmt *mgmt = 570 (struct ieee80211_mgmt *) assoc_info; 571 if (ieee80211_is_assoc_req(mgmt->frame_control) && 572 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 573 sizeof(mgmt->u.assoc_req)) { 574 ies = mgmt->u.assoc_req.variable; 575 ies_len = assoc_info + assoc_req_len - ies; 576 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 577 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 578 + sizeof(mgmt->u.reassoc_req)) { 579 ies = mgmt->u.reassoc_req.variable; 580 ies_len = assoc_info + assoc_req_len - ies; 581 } 582 } 583 584 pos = ies; 585 while (pos && pos + 1 < ies + ies_len) { 586 if (pos + 2 + pos[1] > ies + ies_len) 587 break; 588 if (pos[0] == WLAN_EID_RSN) 589 wpa_ie = pos; /* RSN IE */ 590 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 591 pos[1] >= 4 && 592 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 593 if (pos[5] == 0x01) 594 wpa_ie = pos; /* WPA IE */ 595 else if (pos[5] == 0x04) { 596 wpa_ie = pos; /* WPS IE */ 597 break; /* overrides WPA/RSN IE */ 598 } 599 } 600 pos += 2 + pos[1]; 601 } 602 603 ath6kl_add_new_sta(ar, bssid, channel, wpa_ie, 604 wpa_ie ? 2 + wpa_ie[1] : 0, 605 listen_int & 0xFF, beacon_int, 606 (listen_int >> 8) & 0xFF); 607 608 /* send event to application */ 609 memset(&sinfo, 0, sizeof(sinfo)); 610 611 /* TODO: sinfo.generation */ 612 613 sinfo.assoc_req_ies = ies; 614 sinfo.assoc_req_ies_len = ies_len; 615 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 616 617 cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); 618 619 netif_wake_queue(ar->net_dev); 620 621 return; 622} 623 624/* Functions for Tx credit handling */ 625void ath6k_credit_init(struct htc_credit_state_info *cred_info, 626 struct list_head *ep_list, 627 int tot_credits) 628{ 629 struct htc_endpoint_credit_dist *cur_ep_dist; 630 int count; 631 632 cred_info->cur_free_credits = tot_credits; 633 cred_info->total_avail_credits = tot_credits; 634 635 list_for_each_entry(cur_ep_dist, ep_list, list) { 636 if (cur_ep_dist->endpoint == ENDPOINT_0) 637 continue; 638 639 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 640 641 if (tot_credits > 4) 642 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 643 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 644 ath6kl_deposit_credit_to_ep(cred_info, 645 cur_ep_dist, 646 cur_ep_dist->cred_min); 647 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 648 } 649 650 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 651 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 652 cur_ep_dist->cred_min); 653 /* 654 * Control service is always marked active, it 655 * never goes inactive EVER. 656 */ 657 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 658 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 659 /* this is the lowest priority data endpoint */ 660 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 661 662 /* 663 * Streams have to be created (explicit | implicit) for all 664 * kinds of traffic. BE endpoints are also inactive in the 665 * beginning. When BE traffic starts it creates implicit 666 * streams that redistributes credits. 667 * 668 * Note: all other endpoints have minimums set but are 669 * initially given NO credits. credits will be distributed 670 * as traffic activity demands 671 */ 672 } 673 674 WARN_ON(cred_info->cur_free_credits <= 0); 675 676 list_for_each_entry(cur_ep_dist, ep_list, list) { 677 if (cur_ep_dist->endpoint == ENDPOINT_0) 678 continue; 679 680 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 681 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 682 else { 683 /* 684 * For the remaining data endpoints, we assume that 685 * each cred_per_msg are the same. We use a simple 686 * calculation here, we take the remaining credits 687 * and determine how many max messages this can 688 * cover and then set each endpoint's normal value 689 * equal to 3/4 this amount. 690 */ 691 count = (cred_info->cur_free_credits / 692 cur_ep_dist->cred_per_msg) 693 * cur_ep_dist->cred_per_msg; 694 count = (count * 3) >> 2; 695 count = max(count, cur_ep_dist->cred_per_msg); 696 cur_ep_dist->cred_norm = count; 697 698 } 699 } 700} 701 702/* initialize and setup credit distribution */ 703int ath6k_setup_credit_dist(void *htc_handle, 704 struct htc_credit_state_info *cred_info) 705{ 706 u16 servicepriority[5]; 707 708 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 709 710 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 711 servicepriority[1] = WMI_DATA_VO_SVC; 712 servicepriority[2] = WMI_DATA_VI_SVC; 713 servicepriority[3] = WMI_DATA_BE_SVC; 714 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 715 716 /* set priority list */ 717 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 718 719 return 0; 720} 721 722/* reduce an ep's credits back to a set limit */ 723static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 724 struct htc_endpoint_credit_dist *ep_dist, 725 int limit) 726{ 727 int credits; 728 729 ep_dist->cred_assngd = limit; 730 731 if (ep_dist->credits <= limit) 732 return; 733 734 credits = ep_dist->credits - limit; 735 ep_dist->credits -= credits; 736 cred_info->cur_free_credits += credits; 737} 738 739static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 740 struct list_head *epdist_list) 741{ 742 struct htc_endpoint_credit_dist *cur_dist_list; 743 744 list_for_each_entry(cur_dist_list, epdist_list, list) { 745 if (cur_dist_list->endpoint == ENDPOINT_0) 746 continue; 747 748 if (cur_dist_list->cred_to_dist > 0) { 749 cur_dist_list->credits += 750 cur_dist_list->cred_to_dist; 751 cur_dist_list->cred_to_dist = 0; 752 if (cur_dist_list->credits > 753 cur_dist_list->cred_assngd) 754 ath6k_reduce_credits(cred_info, 755 cur_dist_list, 756 cur_dist_list->cred_assngd); 757 758 if (cur_dist_list->credits > 759 cur_dist_list->cred_norm) 760 ath6k_reduce_credits(cred_info, cur_dist_list, 761 cur_dist_list->cred_norm); 762 763 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 764 if (cur_dist_list->txq_depth == 0) 765 ath6k_reduce_credits(cred_info, 766 cur_dist_list, 0); 767 } 768 } 769 } 770} 771 772/* 773 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 774 * question. 775 */ 776void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 777 struct htc_endpoint_credit_dist *ep_dist) 778{ 779 struct htc_endpoint_credit_dist *curdist_list; 780 int credits = 0; 781 int need; 782 783 if (ep_dist->svc_id == WMI_CONTROL_SVC) 784 goto out; 785 786 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 787 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 788 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 789 goto out; 790 791 /* 792 * For all other services, we follow a simple algorithm of: 793 * 794 * 1. checking the free pool for credits 795 * 2. checking lower priority endpoints for credits to take 796 */ 797 798 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 799 800 if (credits >= ep_dist->seek_cred) 801 goto out; 802 803 /* 804 * We don't have enough in the free pool, try taking away from 805 * lower priority services The rule for taking away credits: 806 * 807 * 1. Only take from lower priority endpoints 808 * 2. Only take what is allocated above the minimum (never 809 * starve an endpoint completely) 810 * 3. Only take what you need. 811 */ 812 813 list_for_each_entry_reverse(curdist_list, 814 &cred_info->lowestpri_ep_dist, 815 list) { 816 if (curdist_list == ep_dist) 817 break; 818 819 need = ep_dist->seek_cred - cred_info->cur_free_credits; 820 821 if ((curdist_list->cred_assngd - need) >= 822 curdist_list->cred_min) { 823 /* 824 * The current one has been allocated more than 825 * it's minimum and it has enough credits assigned 826 * above it's minimum to fulfill our need try to 827 * take away just enough to fulfill our need. 828 */ 829 ath6k_reduce_credits(cred_info, curdist_list, 830 curdist_list->cred_assngd - need); 831 832 if (cred_info->cur_free_credits >= 833 ep_dist->seek_cred) 834 break; 835 } 836 837 if (curdist_list->endpoint == ENDPOINT_0) 838 break; 839 } 840 841 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 842 843out: 844 /* did we find some credits? */ 845 if (credits) 846 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 847 848 ep_dist->seek_cred = 0; 849} 850 851/* redistribute credits based on activity change */ 852static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 853 struct list_head *ep_dist_list) 854{ 855 struct htc_endpoint_credit_dist *curdist_list; 856 857 list_for_each_entry(curdist_list, ep_dist_list, list) { 858 if (curdist_list->endpoint == ENDPOINT_0) 859 continue; 860 861 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 862 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 863 curdist_list->dist_flags |= HTC_EP_ACTIVE; 864 865 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 866 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 867 if (curdist_list->txq_depth == 0) 868 ath6k_reduce_credits(info, 869 curdist_list, 0); 870 else 871 ath6k_reduce_credits(info, 872 curdist_list, 873 curdist_list->cred_min); 874 } 875 } 876} 877 878/* 879 * 880 * This function is invoked whenever endpoints require credit 881 * distributions. A lock is held while this function is invoked, this 882 * function shall NOT block. The ep_dist_list is a list of distribution 883 * structures in prioritized order as defined by the call to the 884 * htc_set_credit_dist() api. 885 */ 886void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 887 struct list_head *ep_dist_list, 888 enum htc_credit_dist_reason reason) 889{ 890 switch (reason) { 891 case HTC_CREDIT_DIST_SEND_COMPLETE: 892 ath6k_credit_update(cred_info, ep_dist_list); 893 break; 894 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 895 ath6k_redistribute_credits(cred_info, ep_dist_list); 896 break; 897 default: 898 break; 899 } 900 901 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 902 WARN_ON(cred_info->cur_free_credits < 0); 903} 904 905void disconnect_timer_handler(unsigned long ptr) 906{ 907 struct net_device *dev = (struct net_device *)ptr; 908 struct ath6kl *ar = ath6kl_priv(dev); 909 910 ath6kl_init_profile_info(ar); 911 ath6kl_disconnect(ar); 912} 913 914void ath6kl_disconnect(struct ath6kl *ar) 915{ 916 if (test_bit(CONNECTED, &ar->flag) || 917 test_bit(CONNECT_PEND, &ar->flag)) { 918 ath6kl_wmi_disconnect_cmd(ar->wmi); 919 /* 920 * Disconnect command is issued, clear the connect pending 921 * flag. The connected flag will be cleared in 922 * disconnect event notification. 923 */ 924 clear_bit(CONNECT_PEND, &ar->flag); 925 } 926} 927 928void ath6kl_deep_sleep_enable(struct ath6kl *ar) 929{ 930 switch (ar->sme_state) { 931 case SME_CONNECTING: 932 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 933 NULL, 0, 934 WLAN_STATUS_UNSPECIFIED_FAILURE, 935 GFP_KERNEL); 936 break; 937 case SME_CONNECTED: 938 default: 939 /* 940 * FIXME: oddly enough smeState is in DISCONNECTED during 941 * suspend, why? Need to send disconnected event in that 942 * state. 943 */ 944 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 945 break; 946 } 947 948 if (test_bit(CONNECTED, &ar->flag) || 949 test_bit(CONNECT_PEND, &ar->flag)) 950 ath6kl_wmi_disconnect_cmd(ar->wmi); 951 952 ar->sme_state = SME_DISCONNECTED; 953 954 /* disable scanning */ 955 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 956 0, 0) != 0) 957 printk(KERN_WARNING "ath6kl: failed to disable scan " 958 "during suspend\n"); 959 960 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 961} 962 963/* WMI Event handlers */ 964 965static const char *get_hw_id_string(u32 id) 966{ 967 switch (id) { 968 case AR6003_REV1_VERSION: 969 return "1.0"; 970 case AR6003_REV2_VERSION: 971 return "2.0"; 972 case AR6003_REV3_VERSION: 973 return "2.1.1"; 974 default: 975 return "unknown"; 976 } 977} 978 979void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 980{ 981 struct ath6kl *ar = devt; 982 struct net_device *dev = ar->net_dev; 983 984 memcpy(dev->dev_addr, datap, ETH_ALEN); 985 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 986 __func__, dev->dev_addr); 987 988 ar->version.wlan_ver = sw_ver; 989 ar->version.abi_ver = abi_ver; 990 991 snprintf(ar->wdev->wiphy->fw_version, 992 sizeof(ar->wdev->wiphy->fw_version), 993 "%u.%u.%u.%u", 994 (ar->version.wlan_ver & 0xf0000000) >> 28, 995 (ar->version.wlan_ver & 0x0f000000) >> 24, 996 (ar->version.wlan_ver & 0x00ff0000) >> 16, 997 (ar->version.wlan_ver & 0x0000ffff)); 998 999 /* indicate to the waiting thread that the ready event was received */ 1000 set_bit(WMI_READY, &ar->flag); 1001 wake_up(&ar->event_wq); 1002 1003 ath6kl_info("hw %s fw %s%s\n", 1004 get_hw_id_string(ar->wdev->wiphy->hw_version), 1005 ar->wdev->wiphy->fw_version, 1006 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1007} 1008 1009void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1010{ 1011 ath6kl_cfg80211_scan_complete_event(ar, status); 1012 1013 if (!ar->usr_bss_filter) 1014 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1015 1016 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1017} 1018 1019void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1020 u16 listen_int, u16 beacon_int, 1021 enum network_type net_type, u8 beacon_ie_len, 1022 u8 assoc_req_len, u8 assoc_resp_len, 1023 u8 *assoc_info) 1024{ 1025 unsigned long flags; 1026 1027 if (ar->nw_type == AP_NETWORK) { 1028 ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, 1029 beacon_int, assoc_req_len, 1030 assoc_info + beacon_ie_len); 1031 return; 1032 } 1033 1034 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1035 listen_int, beacon_int, 1036 net_type, beacon_ie_len, 1037 assoc_req_len, assoc_resp_len, 1038 assoc_info); 1039 1040 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 1041 ar->bss_ch = channel; 1042 1043 if ((ar->nw_type == INFRA_NETWORK)) 1044 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 1045 ar->listen_intvl_b); 1046 1047 netif_wake_queue(ar->net_dev); 1048 1049 /* Update connect & link status atomically */ 1050 spin_lock_irqsave(&ar->lock, flags); 1051 set_bit(CONNECTED, &ar->flag); 1052 clear_bit(CONNECT_PEND, &ar->flag); 1053 netif_carrier_on(ar->net_dev); 1054 spin_unlock_irqrestore(&ar->lock, flags); 1055 1056 aggr_reset_state(ar->aggr_cntxt); 1057 ar->reconnect_flag = 0; 1058 1059 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1060 memset(ar->node_map, 0, sizeof(ar->node_map)); 1061 ar->node_num = 0; 1062 ar->next_ep_id = ENDPOINT_2; 1063 } 1064 1065 if (!ar->usr_bss_filter) 1066 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1067} 1068 1069void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1070{ 1071 struct ath6kl_sta *sta; 1072 u8 tsc[6]; 1073 /* 1074 * For AP case, keyid will have aid of STA which sent pkt with 1075 * MIC error. Use this aid to get MAC & send it to hostapd. 1076 */ 1077 if (ar->nw_type == AP_NETWORK) { 1078 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1079 if (!sta) 1080 return; 1081 1082 ath6kl_dbg(ATH6KL_DBG_TRC, 1083 "ap tkip mic error received from aid=%d\n", keyid); 1084 1085 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1086 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1087 NL80211_KEYTYPE_PAIRWISE, keyid, 1088 tsc, GFP_KERNEL); 1089 } else 1090 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1091 1092} 1093 1094static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1095{ 1096 struct wmi_target_stats *tgt_stats = 1097 (struct wmi_target_stats *) ptr; 1098 struct target_stats *stats = &ar->target_stats; 1099 struct tkip_ccmp_stats *ccmp_stats; 1100 struct bss *conn_bss = NULL; 1101 struct cserv_stats *c_stats; 1102 u8 ac; 1103 1104 if (len < sizeof(*tgt_stats)) 1105 return; 1106 1107 /* update the RSSI of the connected bss */ 1108 if (test_bit(CONNECTED, &ar->flag)) { 1109 conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); 1110 if (conn_bss) { 1111 c_stats = &tgt_stats->cserv_stats; 1112 conn_bss->ni_rssi = 1113 a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); 1114 conn_bss->ni_snr = 1115 tgt_stats->cserv_stats.cs_ave_beacon_snr; 1116 ath6kl_wmi_node_return(ar->wmi, conn_bss); 1117 } 1118 } 1119 1120 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1121 1122 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1123 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1124 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1125 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1126 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1127 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1128 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1129 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1130 stats->tx_rts_success_cnt += 1131 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1132 1133 for (ac = 0; ac < WMM_NUM_AC; ac++) 1134 stats->tx_pkt_per_ac[ac] += 1135 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1136 1137 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1138 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1139 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1140 stats->tx_mult_retry_cnt += 1141 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1142 stats->tx_rts_fail_cnt += 1143 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1144 stats->tx_ucast_rate = 1145 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1146 1147 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1148 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1149 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1150 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1151 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1152 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1153 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1154 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1155 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1156 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1157 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1158 stats->rx_key_cache_miss += 1159 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1160 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1161 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1162 stats->rx_ucast_rate = 1163 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1164 1165 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1166 1167 stats->tkip_local_mic_fail += 1168 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1169 stats->tkip_cnter_measures_invoked += 1170 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1171 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1172 1173 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1174 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1175 1176 stats->pwr_save_fail_cnt += 1177 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1178 stats->noise_floor_calib = 1179 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1180 1181 stats->cs_bmiss_cnt += 1182 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1183 stats->cs_low_rssi_cnt += 1184 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1185 stats->cs_connect_cnt += 1186 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1187 stats->cs_discon_cnt += 1188 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1189 1190 stats->cs_ave_beacon_rssi = 1191 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1192 1193 stats->cs_last_roam_msec = 1194 tgt_stats->cserv_stats.cs_last_roam_msec; 1195 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1196 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1197 1198 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1199 1200 stats->wow_pkt_dropped += 1201 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1202 stats->wow_host_pkt_wakeups += 1203 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1204 stats->wow_host_evt_wakeups += 1205 tgt_stats->wow_stats.wow_host_evt_wakeups; 1206 stats->wow_evt_discarded += 1207 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1208 1209 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1210 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1211 wake_up(&ar->event_wq); 1212 } 1213} 1214 1215static void ath6kl_add_le32(__le32 *var, __le32 val) 1216{ 1217 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1218} 1219 1220void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1221{ 1222 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1223 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1224 struct wmi_per_sta_stat *st_ap, *st_p; 1225 u8 ac; 1226 1227 if (ar->nw_type == AP_NETWORK) { 1228 if (len < sizeof(*p)) 1229 return; 1230 1231 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1232 st_ap = &ap->sta[ac]; 1233 st_p = &p->sta[ac]; 1234 1235 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1236 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1237 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1238 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1239 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1240 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1241 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1242 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1243 } 1244 1245 } else { 1246 ath6kl_update_target_stats(ar, ptr, len); 1247 } 1248} 1249 1250void ath6kl_wakeup_event(void *dev) 1251{ 1252 struct ath6kl *ar = (struct ath6kl *) dev; 1253 1254 wake_up(&ar->event_wq); 1255} 1256 1257void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1258{ 1259 struct ath6kl *ar = (struct ath6kl *) devt; 1260 1261 ar->tx_pwr = tx_pwr; 1262 wake_up(&ar->event_wq); 1263} 1264 1265void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1266{ 1267 struct ath6kl_sta *conn; 1268 struct sk_buff *skb; 1269 bool psq_empty = false; 1270 1271 conn = ath6kl_find_sta_by_aid(ar, aid); 1272 1273 if (!conn) 1274 return; 1275 /* 1276 * Send out a packet queued on ps queue. When the ps queue 1277 * becomes empty update the PVB for this station. 1278 */ 1279 spin_lock_bh(&conn->psq_lock); 1280 psq_empty = skb_queue_empty(&conn->psq); 1281 spin_unlock_bh(&conn->psq_lock); 1282 1283 if (psq_empty) 1284 /* TODO: Send out a NULL data frame */ 1285 return; 1286 1287 spin_lock_bh(&conn->psq_lock); 1288 skb = skb_dequeue(&conn->psq); 1289 spin_unlock_bh(&conn->psq_lock); 1290 1291 conn->sta_flags |= STA_PS_POLLED; 1292 ath6kl_data_tx(skb, ar->net_dev); 1293 conn->sta_flags &= ~STA_PS_POLLED; 1294 1295 spin_lock_bh(&conn->psq_lock); 1296 psq_empty = skb_queue_empty(&conn->psq); 1297 spin_unlock_bh(&conn->psq_lock); 1298 1299 if (psq_empty) 1300 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1301} 1302 1303void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1304{ 1305 bool mcastq_empty = false; 1306 struct sk_buff *skb; 1307 1308 /* 1309 * If there are no associated STAs, ignore the DTIM expiry event. 1310 * There can be potential race conditions where the last associated 1311 * STA may disconnect & before the host could clear the 'Indicate 1312 * DTIM' request to the firmware, the firmware would have just 1313 * indicated a DTIM expiry event. The race is between 'clear DTIM 1314 * expiry cmd' going from the host to the firmware & the DTIM 1315 * expiry event happening from the firmware to the host. 1316 */ 1317 if (!ar->sta_list_index) 1318 return; 1319 1320 spin_lock_bh(&ar->mcastpsq_lock); 1321 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1322 spin_unlock_bh(&ar->mcastpsq_lock); 1323 1324 if (mcastq_empty) 1325 return; 1326 1327 /* set the STA flag to dtim_expired for the frame to go out */ 1328 set_bit(DTIM_EXPIRED, &ar->flag); 1329 1330 spin_lock_bh(&ar->mcastpsq_lock); 1331 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1332 spin_unlock_bh(&ar->mcastpsq_lock); 1333 1334 ath6kl_data_tx(skb, ar->net_dev); 1335 1336 spin_lock_bh(&ar->mcastpsq_lock); 1337 } 1338 spin_unlock_bh(&ar->mcastpsq_lock); 1339 1340 clear_bit(DTIM_EXPIRED, &ar->flag); 1341 1342 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1343 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1344} 1345 1346void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1347 u8 assoc_resp_len, u8 *assoc_info, 1348 u16 prot_reason_status) 1349{ 1350 struct bss *wmi_ssid_node = NULL; 1351 unsigned long flags; 1352 1353 if (ar->nw_type == AP_NETWORK) { 1354 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1355 return; 1356 1357 /* if no more associated STAs, empty the mcast PS q */ 1358 if (ar->sta_list_index == 0) { 1359 spin_lock_bh(&ar->mcastpsq_lock); 1360 skb_queue_purge(&ar->mcastpsq); 1361 spin_unlock_bh(&ar->mcastpsq_lock); 1362 1363 /* clear the LSB of the TIM IE's BitMapCtl field */ 1364 if (test_bit(WMI_READY, &ar->flag)) 1365 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1366 } 1367 1368 if (!is_broadcast_ether_addr(bssid)) { 1369 /* send event to application */ 1370 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1371 } 1372 1373 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) 1374 clear_bit(CONNECTED, &ar->flag); 1375 return; 1376 } 1377 1378 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1379 assoc_resp_len, assoc_info, 1380 prot_reason_status); 1381 1382 aggr_reset_state(ar->aggr_cntxt); 1383 1384 del_timer(&ar->disconnect_timer); 1385 1386 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1387 "disconnect reason is %d\n", reason); 1388 1389 /* 1390 * If the event is due to disconnect cmd from the host, only they 1391 * the target would stop trying to connect. Under any other 1392 * condition, target would keep trying to connect. 1393 */ 1394 if (reason == DISCONNECT_CMD) { 1395 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1396 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1397 } else { 1398 set_bit(CONNECT_PEND, &ar->flag); 1399 if (((reason == ASSOC_FAILED) && 1400 (prot_reason_status == 0x11)) || 1401 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1402 && (ar->reconnect_flag == 1))) { 1403 set_bit(CONNECTED, &ar->flag); 1404 return; 1405 } 1406 } 1407 1408 if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { 1409 ath6kl_wmi_node_free(ar->wmi, bssid); 1410 1411 /* 1412 * In case any other same SSID nodes are present remove it, 1413 * since those nodes also not available now. 1414 */ 1415 do { 1416 /* 1417 * Find the nodes based on SSID and remove it 1418 * 1419 * Note: This case will not work out for 1420 * Hidden-SSID 1421 */ 1422 wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, 1423 ar->ssid, 1424 ar->ssid_len, 1425 false, 1426 true); 1427 1428 if (wmi_ssid_node) 1429 ath6kl_wmi_node_free(ar->wmi, 1430 wmi_ssid_node->ni_macaddr); 1431 1432 } while (wmi_ssid_node); 1433 } 1434 1435 /* update connect & link status atomically */ 1436 spin_lock_irqsave(&ar->lock, flags); 1437 clear_bit(CONNECTED, &ar->flag); 1438 netif_carrier_off(ar->net_dev); 1439 spin_unlock_irqrestore(&ar->lock, flags); 1440 1441 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1442 ar->reconnect_flag = 0; 1443 1444 if (reason != CSERV_DISCONNECT) 1445 ar->user_key_ctrl = 0; 1446 1447 netif_stop_queue(ar->net_dev); 1448 memset(ar->bssid, 0, sizeof(ar->bssid)); 1449 ar->bss_ch = 0; 1450 1451 ath6kl_tx_data_cleanup(ar); 1452} 1453 1454static int ath6kl_open(struct net_device *dev) 1455{ 1456 struct ath6kl *ar = ath6kl_priv(dev); 1457 unsigned long flags; 1458 1459 spin_lock_irqsave(&ar->lock, flags); 1460 1461 set_bit(WLAN_ENABLED, &ar->flag); 1462 1463 if (test_bit(CONNECTED, &ar->flag)) { 1464 netif_carrier_on(dev); 1465 netif_wake_queue(dev); 1466 } else 1467 netif_carrier_off(dev); 1468 1469 spin_unlock_irqrestore(&ar->lock, flags); 1470 1471 return 0; 1472} 1473 1474static int ath6kl_close(struct net_device *dev) 1475{ 1476 struct ath6kl *ar = ath6kl_priv(dev); 1477 1478 netif_stop_queue(dev); 1479 1480 ath6kl_disconnect(ar); 1481 1482 if (test_bit(WMI_READY, &ar->flag)) { 1483 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1484 0, 0, 0)) 1485 return -EIO; 1486 1487 clear_bit(WLAN_ENABLED, &ar->flag); 1488 } 1489 1490 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1491 1492 return 0; 1493} 1494 1495static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1496{ 1497 struct ath6kl *ar = ath6kl_priv(dev); 1498 1499 return &ar->net_stats; 1500} 1501 1502static struct net_device_ops ath6kl_netdev_ops = { 1503 .ndo_open = ath6kl_open, 1504 .ndo_stop = ath6kl_close, 1505 .ndo_start_xmit = ath6kl_data_tx, 1506 .ndo_get_stats = ath6kl_get_stats, 1507}; 1508 1509void init_netdev(struct net_device *dev) 1510{ 1511 dev->netdev_ops = &ath6kl_netdev_ops; 1512 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1513 1514 dev->needed_headroom = ETH_HLEN; 1515 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1516 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1517 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1518 1519 return; 1520} 1521