main.c revision 38c35ffd38be9fbbf2ec0b67a802472d3f58f9fa
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 s32 i; 182 __le32 addr_val; 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. No need to worry about endianness as the 193 * same byte is copied to all four bytes of addr_val at 194 * any time. 195 */ 196 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4); 197 198 /* 199 * Hit each byte of the register address with a 4-byte 200 * write operation to the same address, this is a harmless 201 * operation. 202 */ 203 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val, 204 4, HIF_WR_SYNC_BYTE_FIX); 205 if (status) 206 break; 207 } 208 209 if (status) { 210 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 211 addr, reg_addr); 212 return status; 213 } 214 215 /* 216 * Write the address register again, this time write the whole 217 * 4-byte value. The effect here is that the LSB write causes the 218 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 219 * effect since we are writing the same values again 220 */ 221 addr_val = cpu_to_le32(addr); 222 status = hif_read_write_sync(ar, reg_addr, 223 (u8 *)&(addr_val), 224 4, HIF_WR_SYNC_BYTE_INC); 225 226 if (status) { 227 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 228 addr, reg_addr); 229 return status; 230 } 231 232 return 0; 233} 234 235/* 236 * Read from the hardware through its diagnostic window. No cooperation 237 * from the firmware is required for this. 238 */ 239int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 240{ 241 int ret; 242 243 /* set window register to start read cycle */ 244 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address); 245 if (ret) 246 return ret; 247 248 /* read the data */ 249 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value, 250 sizeof(*value), HIF_RD_SYNC_BYTE_INC); 251 if (ret) { 252 ath6kl_warn("failed to read32 through diagnose window: %d\n", 253 ret); 254 return ret; 255 } 256 257 return 0; 258} 259 260/* 261 * Write to the ATH6KL through its diagnostic window. No cooperation from 262 * the Target is required for this. 263 */ 264int ath6kl_diag_write32(struct ath6kl *ar, u32 address, u32 value) 265{ 266 int ret; 267 268 /* set write data */ 269 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value, 270 sizeof(value), HIF_WR_SYNC_BYTE_INC); 271 if (ret) { 272 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 273 address, value); 274 return ret; 275 } 276 277 /* set window register, which starts the write cycle */ 278 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 279 address); 280} 281 282int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 283{ 284 u32 count, *buf = data; 285 int ret; 286 287 if (WARN_ON(length % 4)) 288 return -EINVAL; 289 290 for (count = 0; count < length / 4; count++, address += 4) { 291 ret = ath6kl_diag_read32(ar, address, &buf[count]); 292 if (ret) 293 return ret; 294 } 295 296 return 0; 297} 298 299int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 300{ 301 u32 count, *buf = data; 302 int ret; 303 304 if (WARN_ON(length % 4)) 305 return -EINVAL; 306 307 for (count = 0; count < length / 4; count++, address += 4) { 308 ret = ath6kl_diag_write32(ar, address, buf[count]); 309 if (ret) 310 return ret; 311 } 312 313 return 0; 314} 315 316int ath6kl_read_fwlogs(struct ath6kl *ar) 317{ 318 struct ath6kl_dbglog_hdr debug_hdr; 319 struct ath6kl_dbglog_buf debug_buf; 320 u32 address, length, dropped, firstbuf, debug_hdr_addr; 321 int ret = 0, loop; 322 u8 *buf; 323 324 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 325 if (!buf) 326 return -ENOMEM; 327 328 address = TARG_VTOP(ar->target_type, 329 ath6kl_get_hi_item_addr(ar, 330 HI_ITEM(hi_dbglog_hdr))); 331 332 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 333 if (ret) 334 goto out; 335 336 /* Get the contents of the ring buffer */ 337 if (debug_hdr_addr == 0) { 338 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 339 ret = -EINVAL; 340 goto out; 341 } 342 343 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 344 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 345 346 address = TARG_VTOP(ar->target_type, 347 le32_to_cpu(debug_hdr.dbuf_addr)); 348 firstbuf = address; 349 dropped = le32_to_cpu(debug_hdr.dropped); 350 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 351 352 loop = 100; 353 354 do { 355 address = TARG_VTOP(ar->target_type, 356 le32_to_cpu(debug_buf.buffer_addr)); 357 length = le32_to_cpu(debug_buf.length); 358 359 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 360 le32_to_cpu(debug_buf.bufsize))) { 361 length = ALIGN(length, 4); 362 363 ret = ath6kl_diag_read(ar, address, 364 buf, length); 365 if (ret) 366 goto out; 367 368 ath6kl_debug_fwlog_event(ar, buf, length); 369 } 370 371 address = TARG_VTOP(ar->target_type, 372 le32_to_cpu(debug_buf.next)); 373 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 374 if (ret) 375 goto out; 376 377 loop--; 378 379 if (WARN_ON(loop == 0)) { 380 ret = -ETIMEDOUT; 381 goto out; 382 } 383 } while (address != firstbuf); 384 385out: 386 kfree(buf); 387 388 return ret; 389} 390 391/* FIXME: move to a better place, target.h? */ 392#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 393#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 394 395static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 396 bool wait_fot_compltn, bool cold_reset) 397{ 398 int status = 0; 399 u32 address; 400 u32 data; 401 402 if (target_type != TARGET_TYPE_AR6003 && 403 target_type != TARGET_TYPE_AR6004) 404 return; 405 406 data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; 407 408 switch (target_type) { 409 case TARGET_TYPE_AR6003: 410 address = AR6003_RESET_CONTROL_ADDRESS; 411 break; 412 case TARGET_TYPE_AR6004: 413 address = AR6004_RESET_CONTROL_ADDRESS; 414 break; 415 default: 416 address = AR6003_RESET_CONTROL_ADDRESS; 417 break; 418 } 419 420 status = ath6kl_diag_write32(ar, address, data); 421 422 if (status) 423 ath6kl_err("failed to reset target\n"); 424} 425 426void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 427 bool get_dbglogs) 428{ 429 struct ath6kl *ar = ath6kl_priv(dev); 430 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 431 bool discon_issued; 432 433 netif_stop_queue(dev); 434 435 /* disable the target and the interrupts associated with it */ 436 if (test_bit(WMI_READY, &ar->flag)) { 437 discon_issued = (test_bit(CONNECTED, &ar->flag) || 438 test_bit(CONNECT_PEND, &ar->flag)); 439 ath6kl_disconnect(ar); 440 if (!keep_profile) 441 ath6kl_init_profile_info(ar); 442 443 del_timer(&ar->disconnect_timer); 444 445 clear_bit(WMI_READY, &ar->flag); 446 ath6kl_wmi_shutdown(ar->wmi); 447 clear_bit(WMI_ENABLED, &ar->flag); 448 ar->wmi = NULL; 449 450 /* 451 * After wmi_shudown all WMI events will be dropped. We 452 * need to cleanup the buffers allocated in AP mode and 453 * give disconnect notification to stack, which usually 454 * happens in the disconnect_event. Simulate the disconnect 455 * event by calling the function directly. Sometimes 456 * disconnect_event will be received when the debug logs 457 * are collected. 458 */ 459 if (discon_issued) 460 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 461 (ar->nw_type & AP_NETWORK) ? 462 bcast_mac : ar->bssid, 463 0, NULL, 0); 464 465 ar->user_key_ctrl = 0; 466 467 } else { 468 ath6kl_dbg(ATH6KL_DBG_TRC, 469 "%s: wmi is not ready 0x%p 0x%p\n", 470 __func__, ar, ar->wmi); 471 472 /* Shut down WMI if we have started it */ 473 if (test_bit(WMI_ENABLED, &ar->flag)) { 474 ath6kl_dbg(ATH6KL_DBG_TRC, 475 "%s: shut down wmi\n", __func__); 476 ath6kl_wmi_shutdown(ar->wmi); 477 clear_bit(WMI_ENABLED, &ar->flag); 478 ar->wmi = NULL; 479 } 480 } 481 482 if (ar->htc_target) { 483 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 484 ath6kl_htc_stop(ar->htc_target); 485 } 486 487 /* 488 * Try to reset the device if we can. The driver may have been 489 * configure NOT to reset the target during a debug session. 490 */ 491 ath6kl_dbg(ATH6KL_DBG_TRC, 492 "attempting to reset target on instance destroy\n"); 493 ath6kl_reset_device(ar, ar->target_type, true, true); 494} 495 496static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 497{ 498 u8 index; 499 u8 keyusage; 500 501 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 502 if (ar->wep_key_list[index].key_len) { 503 keyusage = GROUP_USAGE; 504 if (index == ar->def_txkey_index) 505 keyusage |= TX_USAGE; 506 507 ath6kl_wmi_addkey_cmd(ar->wmi, 508 index, 509 WEP_CRYPT, 510 keyusage, 511 ar->wep_key_list[index].key_len, 512 NULL, 513 ar->wep_key_list[index].key, 514 KEY_OP_INIT_VAL, NULL, 515 NO_SYNC_WMIFLAG); 516 } 517 } 518} 519 520static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, 521 u16 listen_int, u16 beacon_int, 522 u8 assoc_req_len, u8 *assoc_info) 523{ 524 struct net_device *dev = ar->net_dev; 525 u8 *ies = NULL, *wpa_ie = NULL, *pos; 526 size_t ies_len = 0; 527 struct station_info sinfo; 528 struct ath6kl_req_key *ik; 529 int res; 530 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 531 532 if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { 533 ik = &ar->ap_mode_bkey; 534 535 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", 536 channel); 537 538 switch (ar->auth_mode) { 539 case NONE_AUTH: 540 if (ar->prwise_crypto == WEP_CRYPT) 541 ath6kl_install_static_wep_keys(ar); 542 break; 543 case WPA_PSK_AUTH: 544 case WPA2_PSK_AUTH: 545 case (WPA_PSK_AUTH|WPA2_PSK_AUTH): 546 if (!ik->valid) 547 break; 548 549 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 550 "the initial group key for AP mode\n"); 551 memset(key_rsc, 0, sizeof(key_rsc)); 552 res = ath6kl_wmi_addkey_cmd( 553 ar->wmi, ik->key_index, ik->key_type, 554 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 555 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 556 if (res) { 557 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 558 "addkey failed: %d\n", res); 559 } 560 break; 561 } 562 563 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 564 set_bit(CONNECTED, &ar->flag); 565 netif_carrier_on(ar->net_dev); 566 return; 567 } 568 569 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", 570 bssid, channel); 571 572 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 573 struct ieee80211_mgmt *mgmt = 574 (struct ieee80211_mgmt *) assoc_info; 575 if (ieee80211_is_assoc_req(mgmt->frame_control) && 576 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 577 sizeof(mgmt->u.assoc_req)) { 578 ies = mgmt->u.assoc_req.variable; 579 ies_len = assoc_info + assoc_req_len - ies; 580 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 581 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 582 + sizeof(mgmt->u.reassoc_req)) { 583 ies = mgmt->u.reassoc_req.variable; 584 ies_len = assoc_info + assoc_req_len - ies; 585 } 586 } 587 588 pos = ies; 589 while (pos && pos + 1 < ies + ies_len) { 590 if (pos + 2 + pos[1] > ies + ies_len) 591 break; 592 if (pos[0] == WLAN_EID_RSN) 593 wpa_ie = pos; /* RSN IE */ 594 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 595 pos[1] >= 4 && 596 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 597 if (pos[5] == 0x01) 598 wpa_ie = pos; /* WPA IE */ 599 else if (pos[5] == 0x04) { 600 wpa_ie = pos; /* WPS IE */ 601 break; /* overrides WPA/RSN IE */ 602 } 603 } 604 pos += 2 + pos[1]; 605 } 606 607 ath6kl_add_new_sta(ar, bssid, channel, wpa_ie, 608 wpa_ie ? 2 + wpa_ie[1] : 0, 609 listen_int & 0xFF, beacon_int, 610 (listen_int >> 8) & 0xFF); 611 612 /* send event to application */ 613 memset(&sinfo, 0, sizeof(sinfo)); 614 615 /* TODO: sinfo.generation */ 616 617 sinfo.assoc_req_ies = ies; 618 sinfo.assoc_req_ies_len = ies_len; 619 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 620 621 cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); 622 623 netif_wake_queue(ar->net_dev); 624 625 return; 626} 627 628/* Functions for Tx credit handling */ 629void ath6k_credit_init(struct htc_credit_state_info *cred_info, 630 struct list_head *ep_list, 631 int tot_credits) 632{ 633 struct htc_endpoint_credit_dist *cur_ep_dist; 634 int count; 635 636 cred_info->cur_free_credits = tot_credits; 637 cred_info->total_avail_credits = tot_credits; 638 639 list_for_each_entry(cur_ep_dist, ep_list, list) { 640 if (cur_ep_dist->endpoint == ENDPOINT_0) 641 continue; 642 643 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 644 645 if (tot_credits > 4) 646 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 647 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 648 ath6kl_deposit_credit_to_ep(cred_info, 649 cur_ep_dist, 650 cur_ep_dist->cred_min); 651 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 652 } 653 654 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 655 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 656 cur_ep_dist->cred_min); 657 /* 658 * Control service is always marked active, it 659 * never goes inactive EVER. 660 */ 661 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 662 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 663 /* this is the lowest priority data endpoint */ 664 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 665 666 /* 667 * Streams have to be created (explicit | implicit) for all 668 * kinds of traffic. BE endpoints are also inactive in the 669 * beginning. When BE traffic starts it creates implicit 670 * streams that redistributes credits. 671 * 672 * Note: all other endpoints have minimums set but are 673 * initially given NO credits. credits will be distributed 674 * as traffic activity demands 675 */ 676 } 677 678 WARN_ON(cred_info->cur_free_credits <= 0); 679 680 list_for_each_entry(cur_ep_dist, ep_list, list) { 681 if (cur_ep_dist->endpoint == ENDPOINT_0) 682 continue; 683 684 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 685 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 686 else { 687 /* 688 * For the remaining data endpoints, we assume that 689 * each cred_per_msg are the same. We use a simple 690 * calculation here, we take the remaining credits 691 * and determine how many max messages this can 692 * cover and then set each endpoint's normal value 693 * equal to 3/4 this amount. 694 */ 695 count = (cred_info->cur_free_credits / 696 cur_ep_dist->cred_per_msg) 697 * cur_ep_dist->cred_per_msg; 698 count = (count * 3) >> 2; 699 count = max(count, cur_ep_dist->cred_per_msg); 700 cur_ep_dist->cred_norm = count; 701 702 } 703 } 704} 705 706/* initialize and setup credit distribution */ 707int ath6k_setup_credit_dist(void *htc_handle, 708 struct htc_credit_state_info *cred_info) 709{ 710 u16 servicepriority[5]; 711 712 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 713 714 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 715 servicepriority[1] = WMI_DATA_VO_SVC; 716 servicepriority[2] = WMI_DATA_VI_SVC; 717 servicepriority[3] = WMI_DATA_BE_SVC; 718 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 719 720 /* set priority list */ 721 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 722 723 return 0; 724} 725 726/* reduce an ep's credits back to a set limit */ 727static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 728 struct htc_endpoint_credit_dist *ep_dist, 729 int limit) 730{ 731 int credits; 732 733 ep_dist->cred_assngd = limit; 734 735 if (ep_dist->credits <= limit) 736 return; 737 738 credits = ep_dist->credits - limit; 739 ep_dist->credits -= credits; 740 cred_info->cur_free_credits += credits; 741} 742 743static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 744 struct list_head *epdist_list) 745{ 746 struct htc_endpoint_credit_dist *cur_dist_list; 747 748 list_for_each_entry(cur_dist_list, epdist_list, list) { 749 if (cur_dist_list->endpoint == ENDPOINT_0) 750 continue; 751 752 if (cur_dist_list->cred_to_dist > 0) { 753 cur_dist_list->credits += 754 cur_dist_list->cred_to_dist; 755 cur_dist_list->cred_to_dist = 0; 756 if (cur_dist_list->credits > 757 cur_dist_list->cred_assngd) 758 ath6k_reduce_credits(cred_info, 759 cur_dist_list, 760 cur_dist_list->cred_assngd); 761 762 if (cur_dist_list->credits > 763 cur_dist_list->cred_norm) 764 ath6k_reduce_credits(cred_info, cur_dist_list, 765 cur_dist_list->cred_norm); 766 767 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 768 if (cur_dist_list->txq_depth == 0) 769 ath6k_reduce_credits(cred_info, 770 cur_dist_list, 0); 771 } 772 } 773 } 774} 775 776/* 777 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 778 * question. 779 */ 780void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 781 struct htc_endpoint_credit_dist *ep_dist) 782{ 783 struct htc_endpoint_credit_dist *curdist_list; 784 int credits = 0; 785 int need; 786 787 if (ep_dist->svc_id == WMI_CONTROL_SVC) 788 goto out; 789 790 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 791 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 792 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 793 goto out; 794 795 /* 796 * For all other services, we follow a simple algorithm of: 797 * 798 * 1. checking the free pool for credits 799 * 2. checking lower priority endpoints for credits to take 800 */ 801 802 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 803 804 if (credits >= ep_dist->seek_cred) 805 goto out; 806 807 /* 808 * We don't have enough in the free pool, try taking away from 809 * lower priority services The rule for taking away credits: 810 * 811 * 1. Only take from lower priority endpoints 812 * 2. Only take what is allocated above the minimum (never 813 * starve an endpoint completely) 814 * 3. Only take what you need. 815 */ 816 817 list_for_each_entry_reverse(curdist_list, 818 &cred_info->lowestpri_ep_dist, 819 list) { 820 if (curdist_list == ep_dist) 821 break; 822 823 need = ep_dist->seek_cred - cred_info->cur_free_credits; 824 825 if ((curdist_list->cred_assngd - need) >= 826 curdist_list->cred_min) { 827 /* 828 * The current one has been allocated more than 829 * it's minimum and it has enough credits assigned 830 * above it's minimum to fulfill our need try to 831 * take away just enough to fulfill our need. 832 */ 833 ath6k_reduce_credits(cred_info, curdist_list, 834 curdist_list->cred_assngd - need); 835 836 if (cred_info->cur_free_credits >= 837 ep_dist->seek_cred) 838 break; 839 } 840 841 if (curdist_list->endpoint == ENDPOINT_0) 842 break; 843 } 844 845 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 846 847out: 848 /* did we find some credits? */ 849 if (credits) 850 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 851 852 ep_dist->seek_cred = 0; 853} 854 855/* redistribute credits based on activity change */ 856static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 857 struct list_head *ep_dist_list) 858{ 859 struct htc_endpoint_credit_dist *curdist_list; 860 861 list_for_each_entry(curdist_list, ep_dist_list, list) { 862 if (curdist_list->endpoint == ENDPOINT_0) 863 continue; 864 865 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 866 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 867 curdist_list->dist_flags |= HTC_EP_ACTIVE; 868 869 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 870 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 871 if (curdist_list->txq_depth == 0) 872 ath6k_reduce_credits(info, 873 curdist_list, 0); 874 else 875 ath6k_reduce_credits(info, 876 curdist_list, 877 curdist_list->cred_min); 878 } 879 } 880} 881 882/* 883 * 884 * This function is invoked whenever endpoints require credit 885 * distributions. A lock is held while this function is invoked, this 886 * function shall NOT block. The ep_dist_list is a list of distribution 887 * structures in prioritized order as defined by the call to the 888 * htc_set_credit_dist() api. 889 */ 890void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 891 struct list_head *ep_dist_list, 892 enum htc_credit_dist_reason reason) 893{ 894 switch (reason) { 895 case HTC_CREDIT_DIST_SEND_COMPLETE: 896 ath6k_credit_update(cred_info, ep_dist_list); 897 break; 898 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 899 ath6k_redistribute_credits(cred_info, ep_dist_list); 900 break; 901 default: 902 break; 903 } 904 905 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 906 WARN_ON(cred_info->cur_free_credits < 0); 907} 908 909void disconnect_timer_handler(unsigned long ptr) 910{ 911 struct net_device *dev = (struct net_device *)ptr; 912 struct ath6kl *ar = ath6kl_priv(dev); 913 914 ath6kl_init_profile_info(ar); 915 ath6kl_disconnect(ar); 916} 917 918void ath6kl_disconnect(struct ath6kl *ar) 919{ 920 if (test_bit(CONNECTED, &ar->flag) || 921 test_bit(CONNECT_PEND, &ar->flag)) { 922 ath6kl_wmi_disconnect_cmd(ar->wmi); 923 /* 924 * Disconnect command is issued, clear the connect pending 925 * flag. The connected flag will be cleared in 926 * disconnect event notification. 927 */ 928 clear_bit(CONNECT_PEND, &ar->flag); 929 } 930} 931 932void ath6kl_deep_sleep_enable(struct ath6kl *ar) 933{ 934 switch (ar->sme_state) { 935 case SME_CONNECTING: 936 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 937 NULL, 0, 938 WLAN_STATUS_UNSPECIFIED_FAILURE, 939 GFP_KERNEL); 940 break; 941 case SME_CONNECTED: 942 default: 943 /* 944 * FIXME: oddly enough smeState is in DISCONNECTED during 945 * suspend, why? Need to send disconnected event in that 946 * state. 947 */ 948 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 949 break; 950 } 951 952 if (test_bit(CONNECTED, &ar->flag) || 953 test_bit(CONNECT_PEND, &ar->flag)) 954 ath6kl_wmi_disconnect_cmd(ar->wmi); 955 956 ar->sme_state = SME_DISCONNECTED; 957 958 /* disable scanning */ 959 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 960 0, 0) != 0) 961 printk(KERN_WARNING "ath6kl: failed to disable scan " 962 "during suspend\n"); 963 964 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 965} 966 967/* WMI Event handlers */ 968 969static const char *get_hw_id_string(u32 id) 970{ 971 switch (id) { 972 case AR6003_REV1_VERSION: 973 return "1.0"; 974 case AR6003_REV2_VERSION: 975 return "2.0"; 976 case AR6003_REV3_VERSION: 977 return "2.1.1"; 978 default: 979 return "unknown"; 980 } 981} 982 983void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 984{ 985 struct ath6kl *ar = devt; 986 struct net_device *dev = ar->net_dev; 987 988 memcpy(dev->dev_addr, datap, ETH_ALEN); 989 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 990 __func__, dev->dev_addr); 991 992 ar->version.wlan_ver = sw_ver; 993 ar->version.abi_ver = abi_ver; 994 995 snprintf(ar->wdev->wiphy->fw_version, 996 sizeof(ar->wdev->wiphy->fw_version), 997 "%u.%u.%u.%u", 998 (ar->version.wlan_ver & 0xf0000000) >> 28, 999 (ar->version.wlan_ver & 0x0f000000) >> 24, 1000 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1001 (ar->version.wlan_ver & 0x0000ffff)); 1002 1003 /* indicate to the waiting thread that the ready event was received */ 1004 set_bit(WMI_READY, &ar->flag); 1005 wake_up(&ar->event_wq); 1006 1007 ath6kl_info("hw %s fw %s%s\n", 1008 get_hw_id_string(ar->wdev->wiphy->hw_version), 1009 ar->wdev->wiphy->fw_version, 1010 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1011} 1012 1013void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1014{ 1015 ath6kl_cfg80211_scan_complete_event(ar, status); 1016 1017 if (!ar->usr_bss_filter) 1018 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1019 1020 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1021} 1022 1023void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1024 u16 listen_int, u16 beacon_int, 1025 enum network_type net_type, u8 beacon_ie_len, 1026 u8 assoc_req_len, u8 assoc_resp_len, 1027 u8 *assoc_info) 1028{ 1029 unsigned long flags; 1030 1031 if (ar->nw_type == AP_NETWORK) { 1032 ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, 1033 beacon_int, assoc_req_len, 1034 assoc_info + beacon_ie_len); 1035 return; 1036 } 1037 1038 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1039 listen_int, beacon_int, 1040 net_type, beacon_ie_len, 1041 assoc_req_len, assoc_resp_len, 1042 assoc_info); 1043 1044 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 1045 ar->bss_ch = channel; 1046 1047 if ((ar->nw_type == INFRA_NETWORK)) 1048 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 1049 ar->listen_intvl_b); 1050 1051 netif_wake_queue(ar->net_dev); 1052 1053 /* Update connect & link status atomically */ 1054 spin_lock_irqsave(&ar->lock, flags); 1055 set_bit(CONNECTED, &ar->flag); 1056 clear_bit(CONNECT_PEND, &ar->flag); 1057 netif_carrier_on(ar->net_dev); 1058 spin_unlock_irqrestore(&ar->lock, flags); 1059 1060 aggr_reset_state(ar->aggr_cntxt); 1061 ar->reconnect_flag = 0; 1062 1063 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1064 memset(ar->node_map, 0, sizeof(ar->node_map)); 1065 ar->node_num = 0; 1066 ar->next_ep_id = ENDPOINT_2; 1067 } 1068 1069 if (!ar->usr_bss_filter) 1070 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1071} 1072 1073void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1074{ 1075 struct ath6kl_sta *sta; 1076 u8 tsc[6]; 1077 /* 1078 * For AP case, keyid will have aid of STA which sent pkt with 1079 * MIC error. Use this aid to get MAC & send it to hostapd. 1080 */ 1081 if (ar->nw_type == AP_NETWORK) { 1082 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1083 if (!sta) 1084 return; 1085 1086 ath6kl_dbg(ATH6KL_DBG_TRC, 1087 "ap tkip mic error received from aid=%d\n", keyid); 1088 1089 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1090 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1091 NL80211_KEYTYPE_PAIRWISE, keyid, 1092 tsc, GFP_KERNEL); 1093 } else 1094 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1095 1096} 1097 1098static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1099{ 1100 struct wmi_target_stats *tgt_stats = 1101 (struct wmi_target_stats *) ptr; 1102 struct target_stats *stats = &ar->target_stats; 1103 struct tkip_ccmp_stats *ccmp_stats; 1104 struct bss *conn_bss = NULL; 1105 struct cserv_stats *c_stats; 1106 u8 ac; 1107 1108 if (len < sizeof(*tgt_stats)) 1109 return; 1110 1111 /* update the RSSI of the connected bss */ 1112 if (test_bit(CONNECTED, &ar->flag)) { 1113 conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); 1114 if (conn_bss) { 1115 c_stats = &tgt_stats->cserv_stats; 1116 conn_bss->ni_rssi = 1117 a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); 1118 conn_bss->ni_snr = 1119 tgt_stats->cserv_stats.cs_ave_beacon_snr; 1120 ath6kl_wmi_node_return(ar->wmi, conn_bss); 1121 } 1122 } 1123 1124 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1125 1126 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1127 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1128 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1129 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1130 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1131 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1132 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1133 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1134 stats->tx_rts_success_cnt += 1135 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1136 1137 for (ac = 0; ac < WMM_NUM_AC; ac++) 1138 stats->tx_pkt_per_ac[ac] += 1139 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1140 1141 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1142 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1143 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1144 stats->tx_mult_retry_cnt += 1145 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1146 stats->tx_rts_fail_cnt += 1147 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1148 stats->tx_ucast_rate = 1149 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1150 1151 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1152 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1153 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1154 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1155 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1156 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1157 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1158 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1159 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1160 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1161 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1162 stats->rx_key_cache_miss += 1163 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1164 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1165 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1166 stats->rx_ucast_rate = 1167 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1168 1169 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1170 1171 stats->tkip_local_mic_fail += 1172 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1173 stats->tkip_cnter_measures_invoked += 1174 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1175 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1176 1177 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1178 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1179 1180 stats->pwr_save_fail_cnt += 1181 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1182 stats->noise_floor_calib = 1183 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1184 1185 stats->cs_bmiss_cnt += 1186 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1187 stats->cs_low_rssi_cnt += 1188 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1189 stats->cs_connect_cnt += 1190 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1191 stats->cs_discon_cnt += 1192 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1193 1194 stats->cs_ave_beacon_rssi = 1195 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1196 1197 stats->cs_last_roam_msec = 1198 tgt_stats->cserv_stats.cs_last_roam_msec; 1199 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1200 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1201 1202 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1203 1204 stats->wow_pkt_dropped += 1205 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1206 stats->wow_host_pkt_wakeups += 1207 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1208 stats->wow_host_evt_wakeups += 1209 tgt_stats->wow_stats.wow_host_evt_wakeups; 1210 stats->wow_evt_discarded += 1211 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1212 1213 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1214 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1215 wake_up(&ar->event_wq); 1216 } 1217} 1218 1219static void ath6kl_add_le32(__le32 *var, __le32 val) 1220{ 1221 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1222} 1223 1224void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1225{ 1226 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1227 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1228 struct wmi_per_sta_stat *st_ap, *st_p; 1229 u8 ac; 1230 1231 if (ar->nw_type == AP_NETWORK) { 1232 if (len < sizeof(*p)) 1233 return; 1234 1235 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1236 st_ap = &ap->sta[ac]; 1237 st_p = &p->sta[ac]; 1238 1239 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1240 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1241 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1242 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1243 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1244 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1245 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1246 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1247 } 1248 1249 } else { 1250 ath6kl_update_target_stats(ar, ptr, len); 1251 } 1252} 1253 1254void ath6kl_wakeup_event(void *dev) 1255{ 1256 struct ath6kl *ar = (struct ath6kl *) dev; 1257 1258 wake_up(&ar->event_wq); 1259} 1260 1261void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1262{ 1263 struct ath6kl *ar = (struct ath6kl *) devt; 1264 1265 ar->tx_pwr = tx_pwr; 1266 wake_up(&ar->event_wq); 1267} 1268 1269void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1270{ 1271 struct ath6kl_sta *conn; 1272 struct sk_buff *skb; 1273 bool psq_empty = false; 1274 1275 conn = ath6kl_find_sta_by_aid(ar, aid); 1276 1277 if (!conn) 1278 return; 1279 /* 1280 * Send out a packet queued on ps queue. When the ps queue 1281 * becomes empty update the PVB for this station. 1282 */ 1283 spin_lock_bh(&conn->psq_lock); 1284 psq_empty = skb_queue_empty(&conn->psq); 1285 spin_unlock_bh(&conn->psq_lock); 1286 1287 if (psq_empty) 1288 /* TODO: Send out a NULL data frame */ 1289 return; 1290 1291 spin_lock_bh(&conn->psq_lock); 1292 skb = skb_dequeue(&conn->psq); 1293 spin_unlock_bh(&conn->psq_lock); 1294 1295 conn->sta_flags |= STA_PS_POLLED; 1296 ath6kl_data_tx(skb, ar->net_dev); 1297 conn->sta_flags &= ~STA_PS_POLLED; 1298 1299 spin_lock_bh(&conn->psq_lock); 1300 psq_empty = skb_queue_empty(&conn->psq); 1301 spin_unlock_bh(&conn->psq_lock); 1302 1303 if (psq_empty) 1304 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1305} 1306 1307void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1308{ 1309 bool mcastq_empty = false; 1310 struct sk_buff *skb; 1311 1312 /* 1313 * If there are no associated STAs, ignore the DTIM expiry event. 1314 * There can be potential race conditions where the last associated 1315 * STA may disconnect & before the host could clear the 'Indicate 1316 * DTIM' request to the firmware, the firmware would have just 1317 * indicated a DTIM expiry event. The race is between 'clear DTIM 1318 * expiry cmd' going from the host to the firmware & the DTIM 1319 * expiry event happening from the firmware to the host. 1320 */ 1321 if (!ar->sta_list_index) 1322 return; 1323 1324 spin_lock_bh(&ar->mcastpsq_lock); 1325 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1326 spin_unlock_bh(&ar->mcastpsq_lock); 1327 1328 if (mcastq_empty) 1329 return; 1330 1331 /* set the STA flag to dtim_expired for the frame to go out */ 1332 set_bit(DTIM_EXPIRED, &ar->flag); 1333 1334 spin_lock_bh(&ar->mcastpsq_lock); 1335 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1336 spin_unlock_bh(&ar->mcastpsq_lock); 1337 1338 ath6kl_data_tx(skb, ar->net_dev); 1339 1340 spin_lock_bh(&ar->mcastpsq_lock); 1341 } 1342 spin_unlock_bh(&ar->mcastpsq_lock); 1343 1344 clear_bit(DTIM_EXPIRED, &ar->flag); 1345 1346 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1347 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1348} 1349 1350void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1351 u8 assoc_resp_len, u8 *assoc_info, 1352 u16 prot_reason_status) 1353{ 1354 struct bss *wmi_ssid_node = NULL; 1355 unsigned long flags; 1356 1357 if (ar->nw_type == AP_NETWORK) { 1358 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1359 return; 1360 1361 /* if no more associated STAs, empty the mcast PS q */ 1362 if (ar->sta_list_index == 0) { 1363 spin_lock_bh(&ar->mcastpsq_lock); 1364 skb_queue_purge(&ar->mcastpsq); 1365 spin_unlock_bh(&ar->mcastpsq_lock); 1366 1367 /* clear the LSB of the TIM IE's BitMapCtl field */ 1368 if (test_bit(WMI_READY, &ar->flag)) 1369 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1370 } 1371 1372 if (!is_broadcast_ether_addr(bssid)) { 1373 /* send event to application */ 1374 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1375 } 1376 1377 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) 1378 clear_bit(CONNECTED, &ar->flag); 1379 return; 1380 } 1381 1382 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1383 assoc_resp_len, assoc_info, 1384 prot_reason_status); 1385 1386 aggr_reset_state(ar->aggr_cntxt); 1387 1388 del_timer(&ar->disconnect_timer); 1389 1390 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1391 "disconnect reason is %d\n", reason); 1392 1393 /* 1394 * If the event is due to disconnect cmd from the host, only they 1395 * the target would stop trying to connect. Under any other 1396 * condition, target would keep trying to connect. 1397 */ 1398 if (reason == DISCONNECT_CMD) { 1399 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1400 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1401 } else { 1402 set_bit(CONNECT_PEND, &ar->flag); 1403 if (((reason == ASSOC_FAILED) && 1404 (prot_reason_status == 0x11)) || 1405 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1406 && (ar->reconnect_flag == 1))) { 1407 set_bit(CONNECTED, &ar->flag); 1408 return; 1409 } 1410 } 1411 1412 if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { 1413 ath6kl_wmi_node_free(ar->wmi, bssid); 1414 1415 /* 1416 * In case any other same SSID nodes are present remove it, 1417 * since those nodes also not available now. 1418 */ 1419 do { 1420 /* 1421 * Find the nodes based on SSID and remove it 1422 * 1423 * Note: This case will not work out for 1424 * Hidden-SSID 1425 */ 1426 wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, 1427 ar->ssid, 1428 ar->ssid_len, 1429 false, 1430 true); 1431 1432 if (wmi_ssid_node) 1433 ath6kl_wmi_node_free(ar->wmi, 1434 wmi_ssid_node->ni_macaddr); 1435 1436 } while (wmi_ssid_node); 1437 } 1438 1439 /* update connect & link status atomically */ 1440 spin_lock_irqsave(&ar->lock, flags); 1441 clear_bit(CONNECTED, &ar->flag); 1442 netif_carrier_off(ar->net_dev); 1443 spin_unlock_irqrestore(&ar->lock, flags); 1444 1445 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1446 ar->reconnect_flag = 0; 1447 1448 if (reason != CSERV_DISCONNECT) 1449 ar->user_key_ctrl = 0; 1450 1451 netif_stop_queue(ar->net_dev); 1452 memset(ar->bssid, 0, sizeof(ar->bssid)); 1453 ar->bss_ch = 0; 1454 1455 ath6kl_tx_data_cleanup(ar); 1456} 1457 1458static int ath6kl_open(struct net_device *dev) 1459{ 1460 struct ath6kl *ar = ath6kl_priv(dev); 1461 unsigned long flags; 1462 1463 spin_lock_irqsave(&ar->lock, flags); 1464 1465 set_bit(WLAN_ENABLED, &ar->flag); 1466 1467 if (test_bit(CONNECTED, &ar->flag)) { 1468 netif_carrier_on(dev); 1469 netif_wake_queue(dev); 1470 } else 1471 netif_carrier_off(dev); 1472 1473 spin_unlock_irqrestore(&ar->lock, flags); 1474 1475 return 0; 1476} 1477 1478static int ath6kl_close(struct net_device *dev) 1479{ 1480 struct ath6kl *ar = ath6kl_priv(dev); 1481 1482 netif_stop_queue(dev); 1483 1484 ath6kl_disconnect(ar); 1485 1486 if (test_bit(WMI_READY, &ar->flag)) { 1487 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1488 0, 0, 0)) 1489 return -EIO; 1490 1491 clear_bit(WLAN_ENABLED, &ar->flag); 1492 } 1493 1494 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1495 1496 return 0; 1497} 1498 1499static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1500{ 1501 struct ath6kl *ar = ath6kl_priv(dev); 1502 1503 return &ar->net_stats; 1504} 1505 1506static struct net_device_ops ath6kl_netdev_ops = { 1507 .ndo_open = ath6kl_open, 1508 .ndo_stop = ath6kl_close, 1509 .ndo_start_xmit = ath6kl_data_tx, 1510 .ndo_get_stats = ath6kl_get_stats, 1511}; 1512 1513void init_netdev(struct net_device *dev) 1514{ 1515 dev->netdev_ops = &ath6kl_netdev_ops; 1516 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1517 1518 dev->needed_headroom = ETH_HLEN; 1519 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1520 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1521 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1522 1523 return; 1524} 1525