main.c revision aa6cffc1a275a9369ca83e13cebc4b09e4f23954
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, __le32 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; 302 __le32 *buf = data; 303 int ret; 304 305 if (WARN_ON(length % 4)) 306 return -EINVAL; 307 308 for (count = 0; count < length / 4; count++, address += 4) { 309 ret = ath6kl_diag_write32(ar, address, buf[count]); 310 if (ret) 311 return ret; 312 } 313 314 return 0; 315} 316 317int ath6kl_read_fwlogs(struct ath6kl *ar) 318{ 319 struct ath6kl_dbglog_hdr debug_hdr; 320 struct ath6kl_dbglog_buf debug_buf; 321 u32 address, length, dropped, firstbuf, debug_hdr_addr; 322 int ret = 0, loop; 323 u8 *buf; 324 325 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 326 if (!buf) 327 return -ENOMEM; 328 329 address = TARG_VTOP(ar->target_type, 330 ath6kl_get_hi_item_addr(ar, 331 HI_ITEM(hi_dbglog_hdr))); 332 333 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 334 if (ret) 335 goto out; 336 337 /* Get the contents of the ring buffer */ 338 if (debug_hdr_addr == 0) { 339 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 340 ret = -EINVAL; 341 goto out; 342 } 343 344 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 345 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 346 347 address = TARG_VTOP(ar->target_type, 348 le32_to_cpu(debug_hdr.dbuf_addr)); 349 firstbuf = address; 350 dropped = le32_to_cpu(debug_hdr.dropped); 351 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 352 353 loop = 100; 354 355 do { 356 address = TARG_VTOP(ar->target_type, 357 le32_to_cpu(debug_buf.buffer_addr)); 358 length = le32_to_cpu(debug_buf.length); 359 360 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 361 le32_to_cpu(debug_buf.bufsize))) { 362 length = ALIGN(length, 4); 363 364 ret = ath6kl_diag_read(ar, address, 365 buf, length); 366 if (ret) 367 goto out; 368 369 ath6kl_debug_fwlog_event(ar, buf, length); 370 } 371 372 address = TARG_VTOP(ar->target_type, 373 le32_to_cpu(debug_buf.next)); 374 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 375 if (ret) 376 goto out; 377 378 loop--; 379 380 if (WARN_ON(loop == 0)) { 381 ret = -ETIMEDOUT; 382 goto out; 383 } 384 } while (address != firstbuf); 385 386out: 387 kfree(buf); 388 389 return ret; 390} 391 392/* FIXME: move to a better place, target.h? */ 393#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 394#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 395 396static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 397 bool wait_fot_compltn, bool cold_reset) 398{ 399 int status = 0; 400 u32 address; 401 __le32 data; 402 403 if (target_type != TARGET_TYPE_AR6003 && 404 target_type != TARGET_TYPE_AR6004) 405 return; 406 407 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 408 cpu_to_le32(RESET_CONTROL_MBOX_RST); 409 410 switch (target_type) { 411 case TARGET_TYPE_AR6003: 412 address = AR6003_RESET_CONTROL_ADDRESS; 413 break; 414 case TARGET_TYPE_AR6004: 415 address = AR6004_RESET_CONTROL_ADDRESS; 416 break; 417 default: 418 address = AR6003_RESET_CONTROL_ADDRESS; 419 break; 420 } 421 422 status = ath6kl_diag_write32(ar, address, data); 423 424 if (status) 425 ath6kl_err("failed to reset target\n"); 426} 427 428void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 429 bool get_dbglogs) 430{ 431 struct ath6kl *ar = ath6kl_priv(dev); 432 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 433 bool discon_issued; 434 435 netif_stop_queue(dev); 436 437 /* disable the target and the interrupts associated with it */ 438 if (test_bit(WMI_READY, &ar->flag)) { 439 discon_issued = (test_bit(CONNECTED, &ar->flag) || 440 test_bit(CONNECT_PEND, &ar->flag)); 441 ath6kl_disconnect(ar); 442 if (!keep_profile) 443 ath6kl_init_profile_info(ar); 444 445 del_timer(&ar->disconnect_timer); 446 447 clear_bit(WMI_READY, &ar->flag); 448 ath6kl_wmi_shutdown(ar->wmi); 449 clear_bit(WMI_ENABLED, &ar->flag); 450 ar->wmi = NULL; 451 452 /* 453 * After wmi_shudown all WMI events will be dropped. We 454 * need to cleanup the buffers allocated in AP mode and 455 * give disconnect notification to stack, which usually 456 * happens in the disconnect_event. Simulate the disconnect 457 * event by calling the function directly. Sometimes 458 * disconnect_event will be received when the debug logs 459 * are collected. 460 */ 461 if (discon_issued) 462 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 463 (ar->nw_type & AP_NETWORK) ? 464 bcast_mac : ar->bssid, 465 0, NULL, 0); 466 467 ar->user_key_ctrl = 0; 468 469 } else { 470 ath6kl_dbg(ATH6KL_DBG_TRC, 471 "%s: wmi is not ready 0x%p 0x%p\n", 472 __func__, ar, ar->wmi); 473 474 /* Shut down WMI if we have started it */ 475 if (test_bit(WMI_ENABLED, &ar->flag)) { 476 ath6kl_dbg(ATH6KL_DBG_TRC, 477 "%s: shut down wmi\n", __func__); 478 ath6kl_wmi_shutdown(ar->wmi); 479 clear_bit(WMI_ENABLED, &ar->flag); 480 ar->wmi = NULL; 481 } 482 } 483 484 if (ar->htc_target) { 485 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 486 ath6kl_htc_stop(ar->htc_target); 487 } 488 489 /* 490 * Try to reset the device if we can. The driver may have been 491 * configure NOT to reset the target during a debug session. 492 */ 493 ath6kl_dbg(ATH6KL_DBG_TRC, 494 "attempting to reset target on instance destroy\n"); 495 ath6kl_reset_device(ar, ar->target_type, true, true); 496} 497 498static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 499{ 500 u8 index; 501 u8 keyusage; 502 503 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 504 if (ar->wep_key_list[index].key_len) { 505 keyusage = GROUP_USAGE; 506 if (index == ar->def_txkey_index) 507 keyusage |= TX_USAGE; 508 509 ath6kl_wmi_addkey_cmd(ar->wmi, 510 index, 511 WEP_CRYPT, 512 keyusage, 513 ar->wep_key_list[index].key_len, 514 NULL, 515 ar->wep_key_list[index].key, 516 KEY_OP_INIT_VAL, NULL, 517 NO_SYNC_WMIFLAG); 518 } 519 } 520} 521 522void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel) 523{ 524 struct ath6kl_req_key *ik; 525 int res; 526 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 527 528 ik = &ar->ap_mode_bkey; 529 530 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 531 532 switch (ar->auth_mode) { 533 case NONE_AUTH: 534 if (ar->prwise_crypto == WEP_CRYPT) 535 ath6kl_install_static_wep_keys(ar); 536 break; 537 case WPA_PSK_AUTH: 538 case WPA2_PSK_AUTH: 539 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 540 if (!ik->valid) 541 break; 542 543 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 544 "the initial group key for AP mode\n"); 545 memset(key_rsc, 0, sizeof(key_rsc)); 546 res = ath6kl_wmi_addkey_cmd( 547 ar->wmi, ik->key_index, ik->key_type, 548 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 549 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 550 if (res) { 551 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 552 "addkey failed: %d\n", res); 553 } 554 break; 555 } 556 557 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 558 set_bit(CONNECTED, &ar->flag); 559 netif_carrier_on(ar->net_dev); 560} 561 562void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr, 563 u8 keymgmt, u8 ucipher, u8 auth, 564 u8 assoc_req_len, u8 *assoc_info) 565{ 566 u8 *ies = NULL, *wpa_ie = NULL, *pos; 567 size_t ies_len = 0; 568 struct station_info sinfo; 569 570 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 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, mac_addr, aid, wpa_ie, 608 wpa_ie ? 2 + wpa_ie[1] : 0, 609 keymgmt, ucipher, auth); 610 611 /* send event to application */ 612 memset(&sinfo, 0, sizeof(sinfo)); 613 614 /* TODO: sinfo.generation */ 615 616 sinfo.assoc_req_ies = ies; 617 sinfo.assoc_req_ies_len = ies_len; 618 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 619 620 cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL); 621 622 netif_wake_queue(ar->net_dev); 623} 624 625/* Functions for Tx credit handling */ 626void ath6k_credit_init(struct htc_credit_state_info *cred_info, 627 struct list_head *ep_list, 628 int tot_credits) 629{ 630 struct htc_endpoint_credit_dist *cur_ep_dist; 631 int count; 632 633 cred_info->cur_free_credits = tot_credits; 634 cred_info->total_avail_credits = tot_credits; 635 636 list_for_each_entry(cur_ep_dist, ep_list, list) { 637 if (cur_ep_dist->endpoint == ENDPOINT_0) 638 continue; 639 640 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 641 642 if (tot_credits > 4) 643 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 644 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 645 ath6kl_deposit_credit_to_ep(cred_info, 646 cur_ep_dist, 647 cur_ep_dist->cred_min); 648 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 649 } 650 651 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 652 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 653 cur_ep_dist->cred_min); 654 /* 655 * Control service is always marked active, it 656 * never goes inactive EVER. 657 */ 658 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 659 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 660 /* this is the lowest priority data endpoint */ 661 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 662 663 /* 664 * Streams have to be created (explicit | implicit) for all 665 * kinds of traffic. BE endpoints are also inactive in the 666 * beginning. When BE traffic starts it creates implicit 667 * streams that redistributes credits. 668 * 669 * Note: all other endpoints have minimums set but are 670 * initially given NO credits. credits will be distributed 671 * as traffic activity demands 672 */ 673 } 674 675 WARN_ON(cred_info->cur_free_credits <= 0); 676 677 list_for_each_entry(cur_ep_dist, ep_list, list) { 678 if (cur_ep_dist->endpoint == ENDPOINT_0) 679 continue; 680 681 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 682 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 683 else { 684 /* 685 * For the remaining data endpoints, we assume that 686 * each cred_per_msg are the same. We use a simple 687 * calculation here, we take the remaining credits 688 * and determine how many max messages this can 689 * cover and then set each endpoint's normal value 690 * equal to 3/4 this amount. 691 */ 692 count = (cred_info->cur_free_credits / 693 cur_ep_dist->cred_per_msg) 694 * cur_ep_dist->cred_per_msg; 695 count = (count * 3) >> 2; 696 count = max(count, cur_ep_dist->cred_per_msg); 697 cur_ep_dist->cred_norm = count; 698 699 } 700 } 701} 702 703/* initialize and setup credit distribution */ 704int ath6k_setup_credit_dist(void *htc_handle, 705 struct htc_credit_state_info *cred_info) 706{ 707 u16 servicepriority[5]; 708 709 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 710 711 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 712 servicepriority[1] = WMI_DATA_VO_SVC; 713 servicepriority[2] = WMI_DATA_VI_SVC; 714 servicepriority[3] = WMI_DATA_BE_SVC; 715 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 716 717 /* set priority list */ 718 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 719 720 return 0; 721} 722 723/* reduce an ep's credits back to a set limit */ 724static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 725 struct htc_endpoint_credit_dist *ep_dist, 726 int limit) 727{ 728 int credits; 729 730 ep_dist->cred_assngd = limit; 731 732 if (ep_dist->credits <= limit) 733 return; 734 735 credits = ep_dist->credits - limit; 736 ep_dist->credits -= credits; 737 cred_info->cur_free_credits += credits; 738} 739 740static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 741 struct list_head *epdist_list) 742{ 743 struct htc_endpoint_credit_dist *cur_dist_list; 744 745 list_for_each_entry(cur_dist_list, epdist_list, list) { 746 if (cur_dist_list->endpoint == ENDPOINT_0) 747 continue; 748 749 if (cur_dist_list->cred_to_dist > 0) { 750 cur_dist_list->credits += 751 cur_dist_list->cred_to_dist; 752 cur_dist_list->cred_to_dist = 0; 753 if (cur_dist_list->credits > 754 cur_dist_list->cred_assngd) 755 ath6k_reduce_credits(cred_info, 756 cur_dist_list, 757 cur_dist_list->cred_assngd); 758 759 if (cur_dist_list->credits > 760 cur_dist_list->cred_norm) 761 ath6k_reduce_credits(cred_info, cur_dist_list, 762 cur_dist_list->cred_norm); 763 764 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 765 if (cur_dist_list->txq_depth == 0) 766 ath6k_reduce_credits(cred_info, 767 cur_dist_list, 0); 768 } 769 } 770 } 771} 772 773/* 774 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 775 * question. 776 */ 777void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 778 struct htc_endpoint_credit_dist *ep_dist) 779{ 780 struct htc_endpoint_credit_dist *curdist_list; 781 int credits = 0; 782 int need; 783 784 if (ep_dist->svc_id == WMI_CONTROL_SVC) 785 goto out; 786 787 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 788 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 789 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 790 goto out; 791 792 /* 793 * For all other services, we follow a simple algorithm of: 794 * 795 * 1. checking the free pool for credits 796 * 2. checking lower priority endpoints for credits to take 797 */ 798 799 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 800 801 if (credits >= ep_dist->seek_cred) 802 goto out; 803 804 /* 805 * We don't have enough in the free pool, try taking away from 806 * lower priority services The rule for taking away credits: 807 * 808 * 1. Only take from lower priority endpoints 809 * 2. Only take what is allocated above the minimum (never 810 * starve an endpoint completely) 811 * 3. Only take what you need. 812 */ 813 814 list_for_each_entry_reverse(curdist_list, 815 &cred_info->lowestpri_ep_dist, 816 list) { 817 if (curdist_list == ep_dist) 818 break; 819 820 need = ep_dist->seek_cred - cred_info->cur_free_credits; 821 822 if ((curdist_list->cred_assngd - need) >= 823 curdist_list->cred_min) { 824 /* 825 * The current one has been allocated more than 826 * it's minimum and it has enough credits assigned 827 * above it's minimum to fulfill our need try to 828 * take away just enough to fulfill our need. 829 */ 830 ath6k_reduce_credits(cred_info, curdist_list, 831 curdist_list->cred_assngd - need); 832 833 if (cred_info->cur_free_credits >= 834 ep_dist->seek_cred) 835 break; 836 } 837 838 if (curdist_list->endpoint == ENDPOINT_0) 839 break; 840 } 841 842 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 843 844out: 845 /* did we find some credits? */ 846 if (credits) 847 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 848 849 ep_dist->seek_cred = 0; 850} 851 852/* redistribute credits based on activity change */ 853static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 854 struct list_head *ep_dist_list) 855{ 856 struct htc_endpoint_credit_dist *curdist_list; 857 858 list_for_each_entry(curdist_list, ep_dist_list, list) { 859 if (curdist_list->endpoint == ENDPOINT_0) 860 continue; 861 862 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 863 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 864 curdist_list->dist_flags |= HTC_EP_ACTIVE; 865 866 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 867 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 868 if (curdist_list->txq_depth == 0) 869 ath6k_reduce_credits(info, 870 curdist_list, 0); 871 else 872 ath6k_reduce_credits(info, 873 curdist_list, 874 curdist_list->cred_min); 875 } 876 } 877} 878 879/* 880 * 881 * This function is invoked whenever endpoints require credit 882 * distributions. A lock is held while this function is invoked, this 883 * function shall NOT block. The ep_dist_list is a list of distribution 884 * structures in prioritized order as defined by the call to the 885 * htc_set_credit_dist() api. 886 */ 887void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 888 struct list_head *ep_dist_list, 889 enum htc_credit_dist_reason reason) 890{ 891 switch (reason) { 892 case HTC_CREDIT_DIST_SEND_COMPLETE: 893 ath6k_credit_update(cred_info, ep_dist_list); 894 break; 895 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 896 ath6k_redistribute_credits(cred_info, ep_dist_list); 897 break; 898 default: 899 break; 900 } 901 902 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 903 WARN_ON(cred_info->cur_free_credits < 0); 904} 905 906void disconnect_timer_handler(unsigned long ptr) 907{ 908 struct net_device *dev = (struct net_device *)ptr; 909 struct ath6kl *ar = ath6kl_priv(dev); 910 911 ath6kl_init_profile_info(ar); 912 ath6kl_disconnect(ar); 913} 914 915void ath6kl_disconnect(struct ath6kl *ar) 916{ 917 if (test_bit(CONNECTED, &ar->flag) || 918 test_bit(CONNECT_PEND, &ar->flag)) { 919 ath6kl_wmi_disconnect_cmd(ar->wmi); 920 /* 921 * Disconnect command is issued, clear the connect pending 922 * flag. The connected flag will be cleared in 923 * disconnect event notification. 924 */ 925 clear_bit(CONNECT_PEND, &ar->flag); 926 } 927} 928 929void ath6kl_deep_sleep_enable(struct ath6kl *ar) 930{ 931 switch (ar->sme_state) { 932 case SME_CONNECTING: 933 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 934 NULL, 0, 935 WLAN_STATUS_UNSPECIFIED_FAILURE, 936 GFP_KERNEL); 937 break; 938 case SME_CONNECTED: 939 default: 940 /* 941 * FIXME: oddly enough smeState is in DISCONNECTED during 942 * suspend, why? Need to send disconnected event in that 943 * state. 944 */ 945 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 946 break; 947 } 948 949 if (test_bit(CONNECTED, &ar->flag) || 950 test_bit(CONNECT_PEND, &ar->flag)) 951 ath6kl_wmi_disconnect_cmd(ar->wmi); 952 953 ar->sme_state = SME_DISCONNECTED; 954 955 /* disable scanning */ 956 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 957 0, 0) != 0) 958 printk(KERN_WARNING "ath6kl: failed to disable scan " 959 "during suspend\n"); 960 961 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 962 963 /* save the current power mode before enabling power save */ 964 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 965 966 if (ath6kl_wmi_powermode_cmd(ar->wmi, REC_POWER) != 0) 967 ath6kl_warn("ath6kl_deep_sleep_enable: " 968 "wmi_powermode_cmd failed\n"); 969} 970 971/* WMI Event handlers */ 972 973static const char *get_hw_id_string(u32 id) 974{ 975 switch (id) { 976 case AR6003_REV1_VERSION: 977 return "1.0"; 978 case AR6003_REV2_VERSION: 979 return "2.0"; 980 case AR6003_REV3_VERSION: 981 return "2.1.1"; 982 default: 983 return "unknown"; 984 } 985} 986 987void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 988{ 989 struct ath6kl *ar = devt; 990 struct net_device *dev = ar->net_dev; 991 992 memcpy(dev->dev_addr, datap, ETH_ALEN); 993 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 994 __func__, dev->dev_addr); 995 996 ar->version.wlan_ver = sw_ver; 997 ar->version.abi_ver = abi_ver; 998 999 snprintf(ar->wdev->wiphy->fw_version, 1000 sizeof(ar->wdev->wiphy->fw_version), 1001 "%u.%u.%u.%u", 1002 (ar->version.wlan_ver & 0xf0000000) >> 28, 1003 (ar->version.wlan_ver & 0x0f000000) >> 24, 1004 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1005 (ar->version.wlan_ver & 0x0000ffff)); 1006 1007 /* indicate to the waiting thread that the ready event was received */ 1008 set_bit(WMI_READY, &ar->flag); 1009 wake_up(&ar->event_wq); 1010 1011 ath6kl_info("hw %s fw %s%s\n", 1012 get_hw_id_string(ar->wdev->wiphy->hw_version), 1013 ar->wdev->wiphy->fw_version, 1014 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1015} 1016 1017void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1018{ 1019 ath6kl_cfg80211_scan_complete_event(ar, status); 1020 1021 if (!ar->usr_bss_filter) { 1022 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag); 1023 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1024 } 1025 1026 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1027} 1028 1029void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1030 u16 listen_int, u16 beacon_int, 1031 enum network_type net_type, u8 beacon_ie_len, 1032 u8 assoc_req_len, u8 assoc_resp_len, 1033 u8 *assoc_info) 1034{ 1035 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1036 listen_int, beacon_int, 1037 net_type, beacon_ie_len, 1038 assoc_req_len, assoc_resp_len, 1039 assoc_info); 1040 1041 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 1042 ar->bss_ch = channel; 1043 1044 if ((ar->nw_type == INFRA_NETWORK)) 1045 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 1046 ar->listen_intvl_b); 1047 1048 netif_wake_queue(ar->net_dev); 1049 1050 /* Update connect & link status atomically */ 1051 spin_lock_bh(&ar->lock); 1052 set_bit(CONNECTED, &ar->flag); 1053 clear_bit(CONNECT_PEND, &ar->flag); 1054 netif_carrier_on(ar->net_dev); 1055 spin_unlock_bh(&ar->lock); 1056 1057 aggr_reset_state(ar->aggr_cntxt); 1058 ar->reconnect_flag = 0; 1059 1060 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1061 memset(ar->node_map, 0, sizeof(ar->node_map)); 1062 ar->node_num = 0; 1063 ar->next_ep_id = ENDPOINT_2; 1064 } 1065 1066 if (!ar->usr_bss_filter) { 1067 set_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag); 1068 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0); 1069 } 1070} 1071 1072void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1073{ 1074 struct ath6kl_sta *sta; 1075 u8 tsc[6]; 1076 /* 1077 * For AP case, keyid will have aid of STA which sent pkt with 1078 * MIC error. Use this aid to get MAC & send it to hostapd. 1079 */ 1080 if (ar->nw_type == AP_NETWORK) { 1081 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1082 if (!sta) 1083 return; 1084 1085 ath6kl_dbg(ATH6KL_DBG_TRC, 1086 "ap tkip mic error received from aid=%d\n", keyid); 1087 1088 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1089 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1090 NL80211_KEYTYPE_PAIRWISE, keyid, 1091 tsc, GFP_KERNEL); 1092 } else 1093 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1094 1095} 1096 1097static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1098{ 1099 struct wmi_target_stats *tgt_stats = 1100 (struct wmi_target_stats *) ptr; 1101 struct target_stats *stats = &ar->target_stats; 1102 struct tkip_ccmp_stats *ccmp_stats; 1103 u8 ac; 1104 1105 if (len < sizeof(*tgt_stats)) 1106 return; 1107 1108 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1109 1110 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1111 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1112 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1113 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1114 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1115 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1116 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1117 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1118 stats->tx_rts_success_cnt += 1119 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1120 1121 for (ac = 0; ac < WMM_NUM_AC; ac++) 1122 stats->tx_pkt_per_ac[ac] += 1123 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1124 1125 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1126 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1127 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1128 stats->tx_mult_retry_cnt += 1129 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1130 stats->tx_rts_fail_cnt += 1131 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1132 stats->tx_ucast_rate = 1133 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1134 1135 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1136 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1137 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1138 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1139 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1140 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1141 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1142 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1143 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1144 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1145 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1146 stats->rx_key_cache_miss += 1147 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1148 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1149 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1150 stats->rx_ucast_rate = 1151 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1152 1153 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1154 1155 stats->tkip_local_mic_fail += 1156 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1157 stats->tkip_cnter_measures_invoked += 1158 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1159 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1160 1161 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1162 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1163 1164 stats->pwr_save_fail_cnt += 1165 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1166 stats->noise_floor_calib = 1167 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1168 1169 stats->cs_bmiss_cnt += 1170 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1171 stats->cs_low_rssi_cnt += 1172 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1173 stats->cs_connect_cnt += 1174 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1175 stats->cs_discon_cnt += 1176 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1177 1178 stats->cs_ave_beacon_rssi = 1179 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1180 1181 stats->cs_last_roam_msec = 1182 tgt_stats->cserv_stats.cs_last_roam_msec; 1183 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1184 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1185 1186 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1187 1188 stats->wow_pkt_dropped += 1189 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1190 stats->wow_host_pkt_wakeups += 1191 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1192 stats->wow_host_evt_wakeups += 1193 tgt_stats->wow_stats.wow_host_evt_wakeups; 1194 stats->wow_evt_discarded += 1195 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1196 1197 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1198 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1199 wake_up(&ar->event_wq); 1200 } 1201} 1202 1203static void ath6kl_add_le32(__le32 *var, __le32 val) 1204{ 1205 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1206} 1207 1208void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1209{ 1210 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1211 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1212 struct wmi_per_sta_stat *st_ap, *st_p; 1213 u8 ac; 1214 1215 if (ar->nw_type == AP_NETWORK) { 1216 if (len < sizeof(*p)) 1217 return; 1218 1219 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1220 st_ap = &ap->sta[ac]; 1221 st_p = &p->sta[ac]; 1222 1223 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1224 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1225 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1226 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1227 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1228 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1229 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1230 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1231 } 1232 1233 } else { 1234 ath6kl_update_target_stats(ar, ptr, len); 1235 } 1236} 1237 1238void ath6kl_wakeup_event(void *dev) 1239{ 1240 struct ath6kl *ar = (struct ath6kl *) dev; 1241 1242 wake_up(&ar->event_wq); 1243} 1244 1245void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1246{ 1247 struct ath6kl *ar = (struct ath6kl *) devt; 1248 1249 ar->tx_pwr = tx_pwr; 1250 wake_up(&ar->event_wq); 1251} 1252 1253void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1254{ 1255 struct ath6kl_sta *conn; 1256 struct sk_buff *skb; 1257 bool psq_empty = false; 1258 1259 conn = ath6kl_find_sta_by_aid(ar, aid); 1260 1261 if (!conn) 1262 return; 1263 /* 1264 * Send out a packet queued on ps queue. When the ps queue 1265 * becomes empty update the PVB for this station. 1266 */ 1267 spin_lock_bh(&conn->psq_lock); 1268 psq_empty = skb_queue_empty(&conn->psq); 1269 spin_unlock_bh(&conn->psq_lock); 1270 1271 if (psq_empty) 1272 /* TODO: Send out a NULL data frame */ 1273 return; 1274 1275 spin_lock_bh(&conn->psq_lock); 1276 skb = skb_dequeue(&conn->psq); 1277 spin_unlock_bh(&conn->psq_lock); 1278 1279 conn->sta_flags |= STA_PS_POLLED; 1280 ath6kl_data_tx(skb, ar->net_dev); 1281 conn->sta_flags &= ~STA_PS_POLLED; 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 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1289} 1290 1291void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1292{ 1293 bool mcastq_empty = false; 1294 struct sk_buff *skb; 1295 1296 /* 1297 * If there are no associated STAs, ignore the DTIM expiry event. 1298 * There can be potential race conditions where the last associated 1299 * STA may disconnect & before the host could clear the 'Indicate 1300 * DTIM' request to the firmware, the firmware would have just 1301 * indicated a DTIM expiry event. The race is between 'clear DTIM 1302 * expiry cmd' going from the host to the firmware & the DTIM 1303 * expiry event happening from the firmware to the host. 1304 */ 1305 if (!ar->sta_list_index) 1306 return; 1307 1308 spin_lock_bh(&ar->mcastpsq_lock); 1309 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1310 spin_unlock_bh(&ar->mcastpsq_lock); 1311 1312 if (mcastq_empty) 1313 return; 1314 1315 /* set the STA flag to dtim_expired for the frame to go out */ 1316 set_bit(DTIM_EXPIRED, &ar->flag); 1317 1318 spin_lock_bh(&ar->mcastpsq_lock); 1319 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1320 spin_unlock_bh(&ar->mcastpsq_lock); 1321 1322 ath6kl_data_tx(skb, ar->net_dev); 1323 1324 spin_lock_bh(&ar->mcastpsq_lock); 1325 } 1326 spin_unlock_bh(&ar->mcastpsq_lock); 1327 1328 clear_bit(DTIM_EXPIRED, &ar->flag); 1329 1330 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1331 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1332} 1333 1334void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1335 u8 assoc_resp_len, u8 *assoc_info, 1336 u16 prot_reason_status) 1337{ 1338 if (ar->nw_type == AP_NETWORK) { 1339 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1340 return; 1341 1342 /* if no more associated STAs, empty the mcast PS q */ 1343 if (ar->sta_list_index == 0) { 1344 spin_lock_bh(&ar->mcastpsq_lock); 1345 skb_queue_purge(&ar->mcastpsq); 1346 spin_unlock_bh(&ar->mcastpsq_lock); 1347 1348 /* clear the LSB of the TIM IE's BitMapCtl field */ 1349 if (test_bit(WMI_READY, &ar->flag)) 1350 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1351 } 1352 1353 if (!is_broadcast_ether_addr(bssid)) { 1354 /* send event to application */ 1355 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1356 } 1357 1358 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) { 1359 memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); 1360 clear_bit(CONNECTED, &ar->flag); 1361 } 1362 return; 1363 } 1364 1365 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1366 assoc_resp_len, assoc_info, 1367 prot_reason_status); 1368 1369 aggr_reset_state(ar->aggr_cntxt); 1370 1371 del_timer(&ar->disconnect_timer); 1372 1373 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1374 "disconnect reason is %d\n", reason); 1375 1376 /* 1377 * If the event is due to disconnect cmd from the host, only they 1378 * the target would stop trying to connect. Under any other 1379 * condition, target would keep trying to connect. 1380 */ 1381 if (reason == DISCONNECT_CMD) { 1382 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1383 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1384 } else { 1385 set_bit(CONNECT_PEND, &ar->flag); 1386 if (((reason == ASSOC_FAILED) && 1387 (prot_reason_status == 0x11)) || 1388 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1389 && (ar->reconnect_flag == 1))) { 1390 set_bit(CONNECTED, &ar->flag); 1391 return; 1392 } 1393 } 1394 1395 /* update connect & link status atomically */ 1396 spin_lock_bh(&ar->lock); 1397 clear_bit(CONNECTED, &ar->flag); 1398 netif_carrier_off(ar->net_dev); 1399 spin_unlock_bh(&ar->lock); 1400 1401 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1402 ar->reconnect_flag = 0; 1403 1404 if (reason != CSERV_DISCONNECT) 1405 ar->user_key_ctrl = 0; 1406 1407 netif_stop_queue(ar->net_dev); 1408 memset(ar->bssid, 0, sizeof(ar->bssid)); 1409 ar->bss_ch = 0; 1410 1411 ath6kl_tx_data_cleanup(ar); 1412} 1413 1414static int ath6kl_open(struct net_device *dev) 1415{ 1416 struct ath6kl *ar = ath6kl_priv(dev); 1417 1418 spin_lock_bh(&ar->lock); 1419 1420 set_bit(WLAN_ENABLED, &ar->flag); 1421 1422 if (test_bit(CONNECTED, &ar->flag)) { 1423 netif_carrier_on(dev); 1424 netif_wake_queue(dev); 1425 } else 1426 netif_carrier_off(dev); 1427 1428 spin_unlock_bh(&ar->lock); 1429 1430 return 0; 1431} 1432 1433static int ath6kl_close(struct net_device *dev) 1434{ 1435 struct ath6kl *ar = ath6kl_priv(dev); 1436 1437 netif_stop_queue(dev); 1438 1439 ath6kl_disconnect(ar); 1440 1441 if (test_bit(WMI_READY, &ar->flag)) { 1442 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1443 0, 0, 0)) 1444 return -EIO; 1445 1446 clear_bit(WLAN_ENABLED, &ar->flag); 1447 } 1448 1449 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1450 1451 return 0; 1452} 1453 1454static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1455{ 1456 struct ath6kl *ar = ath6kl_priv(dev); 1457 1458 return &ar->net_stats; 1459} 1460 1461static struct net_device_ops ath6kl_netdev_ops = { 1462 .ndo_open = ath6kl_open, 1463 .ndo_stop = ath6kl_close, 1464 .ndo_start_xmit = ath6kl_data_tx, 1465 .ndo_get_stats = ath6kl_get_stats, 1466}; 1467 1468void init_netdev(struct net_device *dev) 1469{ 1470 dev->netdev_ops = &ath6kl_netdev_ops; 1471 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1472 1473 dev->needed_headroom = ETH_HLEN; 1474 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1475 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1476 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1477 1478 return; 1479} 1480