main.c revision 59c98449b8af405aa6245ea9f640c5847f42d26e
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 struct ath6kl_vif *vif = netdev_priv(dev); 433 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 434 bool discon_issued; 435 436 netif_stop_queue(dev); 437 438 /* disable the target and the interrupts associated with it */ 439 if (test_bit(WMI_READY, &ar->flag)) { 440 discon_issued = (test_bit(CONNECTED, &vif->flags) || 441 test_bit(CONNECT_PEND, &vif->flags)); 442 ath6kl_disconnect(ar); 443 if (!keep_profile) 444 ath6kl_init_profile_info(ar); 445 446 del_timer(&ar->disconnect_timer); 447 448 clear_bit(WMI_READY, &ar->flag); 449 ath6kl_wmi_shutdown(ar->wmi); 450 clear_bit(WMI_ENABLED, &ar->flag); 451 ar->wmi = NULL; 452 453 /* 454 * After wmi_shudown all WMI events will be dropped. We 455 * need to cleanup the buffers allocated in AP mode and 456 * give disconnect notification to stack, which usually 457 * happens in the disconnect_event. Simulate the disconnect 458 * event by calling the function directly. Sometimes 459 * disconnect_event will be received when the debug logs 460 * are collected. 461 */ 462 if (discon_issued) 463 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 464 (ar->nw_type & AP_NETWORK) ? 465 bcast_mac : ar->bssid, 466 0, NULL, 0); 467 468 ar->user_key_ctrl = 0; 469 470 } else { 471 ath6kl_dbg(ATH6KL_DBG_TRC, 472 "%s: wmi is not ready 0x%p 0x%p\n", 473 __func__, ar, ar->wmi); 474 475 /* Shut down WMI if we have started it */ 476 if (test_bit(WMI_ENABLED, &ar->flag)) { 477 ath6kl_dbg(ATH6KL_DBG_TRC, 478 "%s: shut down wmi\n", __func__); 479 ath6kl_wmi_shutdown(ar->wmi); 480 clear_bit(WMI_ENABLED, &ar->flag); 481 ar->wmi = NULL; 482 } 483 } 484 485 if (ar->htc_target) { 486 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 487 ath6kl_htc_stop(ar->htc_target); 488 } 489 490 /* 491 * Try to reset the device if we can. The driver may have been 492 * configure NOT to reset the target during a debug session. 493 */ 494 ath6kl_dbg(ATH6KL_DBG_TRC, 495 "attempting to reset target on instance destroy\n"); 496 ath6kl_reset_device(ar, ar->target_type, true, true); 497} 498 499static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 500{ 501 u8 index; 502 u8 keyusage; 503 504 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 505 if (ar->wep_key_list[index].key_len) { 506 keyusage = GROUP_USAGE; 507 if (index == ar->def_txkey_index) 508 keyusage |= TX_USAGE; 509 510 ath6kl_wmi_addkey_cmd(ar->wmi, 511 index, 512 WEP_CRYPT, 513 keyusage, 514 ar->wep_key_list[index].key_len, 515 NULL, 516 ar->wep_key_list[index].key, 517 KEY_OP_INIT_VAL, NULL, 518 NO_SYNC_WMIFLAG); 519 } 520 } 521} 522 523void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel) 524{ 525 struct ath6kl_req_key *ik; 526 int res; 527 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 528 /* TODO: Pass vif instead of taking it from ar */ 529 struct ath6kl_vif *vif = ar->vif; 530 531 ik = &ar->ap_mode_bkey; 532 533 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 534 535 switch (ar->auth_mode) { 536 case NONE_AUTH: 537 if (ar->prwise_crypto == WEP_CRYPT) 538 ath6kl_install_static_wep_keys(ar); 539 break; 540 case WPA_PSK_AUTH: 541 case WPA2_PSK_AUTH: 542 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 543 if (!ik->valid) 544 break; 545 546 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 547 "the initial group key for AP mode\n"); 548 memset(key_rsc, 0, sizeof(key_rsc)); 549 res = ath6kl_wmi_addkey_cmd( 550 ar->wmi, ik->key_index, ik->key_type, 551 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 552 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 553 if (res) { 554 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 555 "addkey failed: %d\n", res); 556 } 557 break; 558 } 559 560 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 561 set_bit(CONNECTED, &vif->flags); 562 netif_carrier_on(ar->net_dev); 563} 564 565void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr, 566 u8 keymgmt, u8 ucipher, u8 auth, 567 u8 assoc_req_len, u8 *assoc_info) 568{ 569 u8 *ies = NULL, *wpa_ie = NULL, *pos; 570 size_t ies_len = 0; 571 struct station_info sinfo; 572 573 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 574 575 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 576 struct ieee80211_mgmt *mgmt = 577 (struct ieee80211_mgmt *) assoc_info; 578 if (ieee80211_is_assoc_req(mgmt->frame_control) && 579 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 580 sizeof(mgmt->u.assoc_req)) { 581 ies = mgmt->u.assoc_req.variable; 582 ies_len = assoc_info + assoc_req_len - ies; 583 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 584 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 585 + sizeof(mgmt->u.reassoc_req)) { 586 ies = mgmt->u.reassoc_req.variable; 587 ies_len = assoc_info + assoc_req_len - ies; 588 } 589 } 590 591 pos = ies; 592 while (pos && pos + 1 < ies + ies_len) { 593 if (pos + 2 + pos[1] > ies + ies_len) 594 break; 595 if (pos[0] == WLAN_EID_RSN) 596 wpa_ie = pos; /* RSN IE */ 597 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 598 pos[1] >= 4 && 599 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 600 if (pos[5] == 0x01) 601 wpa_ie = pos; /* WPA IE */ 602 else if (pos[5] == 0x04) { 603 wpa_ie = pos; /* WPS IE */ 604 break; /* overrides WPA/RSN IE */ 605 } 606 } 607 pos += 2 + pos[1]; 608 } 609 610 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 611 wpa_ie ? 2 + wpa_ie[1] : 0, 612 keymgmt, ucipher, auth); 613 614 /* send event to application */ 615 memset(&sinfo, 0, sizeof(sinfo)); 616 617 /* TODO: sinfo.generation */ 618 619 sinfo.assoc_req_ies = ies; 620 sinfo.assoc_req_ies_len = ies_len; 621 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 622 623 cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL); 624 625 netif_wake_queue(ar->net_dev); 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 /* TODO: Pass vif instead of taking it from ar */ 921 struct ath6kl_vif *vif = ar->vif; 922 923 if (test_bit(CONNECTED, &vif->flags) || 924 test_bit(CONNECT_PEND, &vif->flags)) { 925 ath6kl_wmi_disconnect_cmd(ar->wmi); 926 /* 927 * Disconnect command is issued, clear the connect pending 928 * flag. The connected flag will be cleared in 929 * disconnect event notification. 930 */ 931 clear_bit(CONNECT_PEND, &vif->flags); 932 } 933} 934 935void ath6kl_deep_sleep_enable(struct ath6kl *ar) 936{ 937 /* TODO: Pass vif instead of taking it from ar */ 938 struct ath6kl_vif *vif = ar->vif; 939 940 switch (ar->sme_state) { 941 case SME_CONNECTING: 942 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 943 NULL, 0, 944 WLAN_STATUS_UNSPECIFIED_FAILURE, 945 GFP_KERNEL); 946 break; 947 case SME_CONNECTED: 948 default: 949 /* 950 * FIXME: oddly enough smeState is in DISCONNECTED during 951 * suspend, why? Need to send disconnected event in that 952 * state. 953 */ 954 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 955 break; 956 } 957 958 if (test_bit(CONNECTED, &vif->flags) || 959 test_bit(CONNECT_PEND, &vif->flags)) 960 ath6kl_wmi_disconnect_cmd(ar->wmi); 961 962 ar->sme_state = SME_DISCONNECTED; 963 964 /* disable scanning */ 965 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 966 0, 0) != 0) 967 printk(KERN_WARNING "ath6kl: failed to disable scan " 968 "during suspend\n"); 969 970 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 971 972 /* save the current power mode before enabling power save */ 973 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 974 975 if (ath6kl_wmi_powermode_cmd(ar->wmi, REC_POWER) != 0) 976 ath6kl_warn("ath6kl_deep_sleep_enable: " 977 "wmi_powermode_cmd failed\n"); 978} 979 980/* WMI Event handlers */ 981 982static const char *get_hw_id_string(u32 id) 983{ 984 switch (id) { 985 case AR6003_REV1_VERSION: 986 return "1.0"; 987 case AR6003_REV2_VERSION: 988 return "2.0"; 989 case AR6003_REV3_VERSION: 990 return "2.1.1"; 991 default: 992 return "unknown"; 993 } 994} 995 996void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 997{ 998 struct ath6kl *ar = devt; 999 struct net_device *dev = ar->net_dev; 1000 1001 memcpy(dev->dev_addr, datap, ETH_ALEN); 1002 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 1003 __func__, dev->dev_addr); 1004 1005 ar->version.wlan_ver = sw_ver; 1006 ar->version.abi_ver = abi_ver; 1007 1008 snprintf(ar->wiphy->fw_version, 1009 sizeof(ar->wiphy->fw_version), 1010 "%u.%u.%u.%u", 1011 (ar->version.wlan_ver & 0xf0000000) >> 28, 1012 (ar->version.wlan_ver & 0x0f000000) >> 24, 1013 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1014 (ar->version.wlan_ver & 0x0000ffff)); 1015 1016 /* indicate to the waiting thread that the ready event was received */ 1017 set_bit(WMI_READY, &ar->flag); 1018 wake_up(&ar->event_wq); 1019 1020 ath6kl_info("hw %s fw %s%s\n", 1021 get_hw_id_string(ar->wiphy->hw_version), 1022 ar->wiphy->fw_version, 1023 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1024} 1025 1026void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1027{ 1028 /* TODO: Pass vif instead of taking it from ar */ 1029 struct ath6kl_vif *vif = ar->vif; 1030 1031 ath6kl_cfg80211_scan_complete_event(ar, status); 1032 1033 if (!ar->usr_bss_filter) { 1034 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1035 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1036 } 1037 1038 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1039} 1040 1041void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1042 u16 listen_int, u16 beacon_int, 1043 enum network_type net_type, u8 beacon_ie_len, 1044 u8 assoc_req_len, u8 assoc_resp_len, 1045 u8 *assoc_info) 1046{ 1047 /* TODO: findout vif instead of taking it from ar */ 1048 struct ath6kl_vif *vif = ar->vif; 1049 1050 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1051 listen_int, beacon_int, 1052 net_type, beacon_ie_len, 1053 assoc_req_len, assoc_resp_len, 1054 assoc_info); 1055 1056 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 1057 ar->bss_ch = channel; 1058 1059 if ((ar->nw_type == INFRA_NETWORK)) 1060 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 1061 ar->listen_intvl_b); 1062 1063 netif_wake_queue(ar->net_dev); 1064 1065 /* Update connect & link status atomically */ 1066 spin_lock_bh(&ar->lock); 1067 set_bit(CONNECTED, &vif->flags); 1068 clear_bit(CONNECT_PEND, &vif->flags); 1069 netif_carrier_on(ar->net_dev); 1070 spin_unlock_bh(&ar->lock); 1071 1072 aggr_reset_state(ar->aggr_cntxt); 1073 ar->reconnect_flag = 0; 1074 1075 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1076 memset(ar->node_map, 0, sizeof(ar->node_map)); 1077 ar->node_num = 0; 1078 ar->next_ep_id = ENDPOINT_2; 1079 } 1080 1081 if (!ar->usr_bss_filter) { 1082 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1083 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0); 1084 } 1085} 1086 1087void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1088{ 1089 struct ath6kl_sta *sta; 1090 u8 tsc[6]; 1091 /* 1092 * For AP case, keyid will have aid of STA which sent pkt with 1093 * MIC error. Use this aid to get MAC & send it to hostapd. 1094 */ 1095 if (ar->nw_type == AP_NETWORK) { 1096 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1097 if (!sta) 1098 return; 1099 1100 ath6kl_dbg(ATH6KL_DBG_TRC, 1101 "ap tkip mic error received from aid=%d\n", keyid); 1102 1103 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1104 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1105 NL80211_KEYTYPE_PAIRWISE, keyid, 1106 tsc, GFP_KERNEL); 1107 } else 1108 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1109 1110} 1111 1112static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1113{ 1114 struct wmi_target_stats *tgt_stats = 1115 (struct wmi_target_stats *) ptr; 1116 struct target_stats *stats = &ar->target_stats; 1117 struct tkip_ccmp_stats *ccmp_stats; 1118 u8 ac; 1119 1120 if (len < sizeof(*tgt_stats)) 1121 return; 1122 1123 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1124 1125 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1126 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1127 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1128 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1129 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1130 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1131 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1132 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1133 stats->tx_rts_success_cnt += 1134 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1135 1136 for (ac = 0; ac < WMM_NUM_AC; ac++) 1137 stats->tx_pkt_per_ac[ac] += 1138 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1139 1140 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1141 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1142 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1143 stats->tx_mult_retry_cnt += 1144 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1145 stats->tx_rts_fail_cnt += 1146 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1147 stats->tx_ucast_rate = 1148 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1149 1150 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1151 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1152 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1153 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1154 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1155 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1156 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1157 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1158 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1159 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1160 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1161 stats->rx_key_cache_miss += 1162 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1163 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1164 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1165 stats->rx_ucast_rate = 1166 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1167 1168 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1169 1170 stats->tkip_local_mic_fail += 1171 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1172 stats->tkip_cnter_measures_invoked += 1173 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1174 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1175 1176 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1177 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1178 1179 stats->pwr_save_fail_cnt += 1180 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1181 stats->noise_floor_calib = 1182 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1183 1184 stats->cs_bmiss_cnt += 1185 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1186 stats->cs_low_rssi_cnt += 1187 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1188 stats->cs_connect_cnt += 1189 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1190 stats->cs_discon_cnt += 1191 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1192 1193 stats->cs_ave_beacon_rssi = 1194 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1195 1196 stats->cs_last_roam_msec = 1197 tgt_stats->cserv_stats.cs_last_roam_msec; 1198 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1199 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1200 1201 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1202 1203 stats->wow_pkt_dropped += 1204 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1205 stats->wow_host_pkt_wakeups += 1206 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1207 stats->wow_host_evt_wakeups += 1208 tgt_stats->wow_stats.wow_host_evt_wakeups; 1209 stats->wow_evt_discarded += 1210 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1211 1212 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1213 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1214 wake_up(&ar->event_wq); 1215 } 1216} 1217 1218static void ath6kl_add_le32(__le32 *var, __le32 val) 1219{ 1220 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1221} 1222 1223void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1224{ 1225 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1226 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1227 struct wmi_per_sta_stat *st_ap, *st_p; 1228 u8 ac; 1229 1230 if (ar->nw_type == AP_NETWORK) { 1231 if (len < sizeof(*p)) 1232 return; 1233 1234 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1235 st_ap = &ap->sta[ac]; 1236 st_p = &p->sta[ac]; 1237 1238 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1239 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1240 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1241 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1242 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1243 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1244 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1245 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1246 } 1247 1248 } else { 1249 ath6kl_update_target_stats(ar, ptr, len); 1250 } 1251} 1252 1253void ath6kl_wakeup_event(void *dev) 1254{ 1255 struct ath6kl *ar = (struct ath6kl *) dev; 1256 1257 wake_up(&ar->event_wq); 1258} 1259 1260void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1261{ 1262 struct ath6kl *ar = (struct ath6kl *) devt; 1263 1264 ar->tx_pwr = tx_pwr; 1265 wake_up(&ar->event_wq); 1266} 1267 1268void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1269{ 1270 struct ath6kl_sta *conn; 1271 struct sk_buff *skb; 1272 bool psq_empty = false; 1273 1274 conn = ath6kl_find_sta_by_aid(ar, aid); 1275 1276 if (!conn) 1277 return; 1278 /* 1279 * Send out a packet queued on ps queue. When the ps queue 1280 * becomes empty update the PVB for this station. 1281 */ 1282 spin_lock_bh(&conn->psq_lock); 1283 psq_empty = skb_queue_empty(&conn->psq); 1284 spin_unlock_bh(&conn->psq_lock); 1285 1286 if (psq_empty) 1287 /* TODO: Send out a NULL data frame */ 1288 return; 1289 1290 spin_lock_bh(&conn->psq_lock); 1291 skb = skb_dequeue(&conn->psq); 1292 spin_unlock_bh(&conn->psq_lock); 1293 1294 conn->sta_flags |= STA_PS_POLLED; 1295 ath6kl_data_tx(skb, ar->net_dev); 1296 conn->sta_flags &= ~STA_PS_POLLED; 1297 1298 spin_lock_bh(&conn->psq_lock); 1299 psq_empty = skb_queue_empty(&conn->psq); 1300 spin_unlock_bh(&conn->psq_lock); 1301 1302 if (psq_empty) 1303 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1304} 1305 1306void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1307{ 1308 bool mcastq_empty = false; 1309 struct sk_buff *skb; 1310 /* TODO: Pass vif instead of taking it from ar */ 1311 struct ath6kl_vif *vif = ar->vif; 1312 1313 /* 1314 * If there are no associated STAs, ignore the DTIM expiry event. 1315 * There can be potential race conditions where the last associated 1316 * STA may disconnect & before the host could clear the 'Indicate 1317 * DTIM' request to the firmware, the firmware would have just 1318 * indicated a DTIM expiry event. The race is between 'clear DTIM 1319 * expiry cmd' going from the host to the firmware & the DTIM 1320 * expiry event happening from the firmware to the host. 1321 */ 1322 if (!ar->sta_list_index) 1323 return; 1324 1325 spin_lock_bh(&ar->mcastpsq_lock); 1326 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1327 spin_unlock_bh(&ar->mcastpsq_lock); 1328 1329 if (mcastq_empty) 1330 return; 1331 1332 /* set the STA flag to dtim_expired for the frame to go out */ 1333 set_bit(DTIM_EXPIRED, &vif->flags); 1334 1335 spin_lock_bh(&ar->mcastpsq_lock); 1336 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1337 spin_unlock_bh(&ar->mcastpsq_lock); 1338 1339 ath6kl_data_tx(skb, ar->net_dev); 1340 1341 spin_lock_bh(&ar->mcastpsq_lock); 1342 } 1343 spin_unlock_bh(&ar->mcastpsq_lock); 1344 1345 clear_bit(DTIM_EXPIRED, &vif->flags); 1346 1347 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1348 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1349} 1350 1351void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1352 u8 assoc_resp_len, u8 *assoc_info, 1353 u16 prot_reason_status) 1354{ 1355 /* TODO: Findout vif instead of taking it from ar */ 1356 struct ath6kl_vif *vif = ar->vif; 1357 1358 if (ar->nw_type == AP_NETWORK) { 1359 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1360 return; 1361 1362 /* if no more associated STAs, empty the mcast PS q */ 1363 if (ar->sta_list_index == 0) { 1364 spin_lock_bh(&ar->mcastpsq_lock); 1365 skb_queue_purge(&ar->mcastpsq); 1366 spin_unlock_bh(&ar->mcastpsq_lock); 1367 1368 /* clear the LSB of the TIM IE's BitMapCtl field */ 1369 if (test_bit(WMI_READY, &ar->flag)) 1370 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1371 } 1372 1373 if (!is_broadcast_ether_addr(bssid)) { 1374 /* send event to application */ 1375 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1376 } 1377 1378 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) { 1379 memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); 1380 clear_bit(CONNECTED, &vif->flags); 1381 } 1382 return; 1383 } 1384 1385 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1386 assoc_resp_len, assoc_info, 1387 prot_reason_status); 1388 1389 aggr_reset_state(ar->aggr_cntxt); 1390 1391 del_timer(&ar->disconnect_timer); 1392 1393 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1394 "disconnect reason is %d\n", reason); 1395 1396 /* 1397 * If the event is due to disconnect cmd from the host, only they 1398 * the target would stop trying to connect. Under any other 1399 * condition, target would keep trying to connect. 1400 */ 1401 if (reason == DISCONNECT_CMD) { 1402 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1403 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1404 } else { 1405 set_bit(CONNECT_PEND, &vif->flags); 1406 if (((reason == ASSOC_FAILED) && 1407 (prot_reason_status == 0x11)) || 1408 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1409 && (ar->reconnect_flag == 1))) { 1410 set_bit(CONNECTED, &vif->flags); 1411 return; 1412 } 1413 } 1414 1415 /* update connect & link status atomically */ 1416 spin_lock_bh(&ar->lock); 1417 clear_bit(CONNECTED, &vif->flags); 1418 netif_carrier_off(ar->net_dev); 1419 spin_unlock_bh(&ar->lock); 1420 1421 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1422 ar->reconnect_flag = 0; 1423 1424 if (reason != CSERV_DISCONNECT) 1425 ar->user_key_ctrl = 0; 1426 1427 netif_stop_queue(ar->net_dev); 1428 memset(ar->bssid, 0, sizeof(ar->bssid)); 1429 ar->bss_ch = 0; 1430 1431 ath6kl_tx_data_cleanup(ar); 1432} 1433 1434static int ath6kl_open(struct net_device *dev) 1435{ 1436 struct ath6kl *ar = ath6kl_priv(dev); 1437 struct ath6kl_vif *vif = netdev_priv(dev); 1438 1439 spin_lock_bh(&ar->lock); 1440 1441 set_bit(WLAN_ENABLED, &vif->flags); 1442 1443 if (test_bit(CONNECTED, &vif->flags)) { 1444 netif_carrier_on(dev); 1445 netif_wake_queue(dev); 1446 } else 1447 netif_carrier_off(dev); 1448 1449 spin_unlock_bh(&ar->lock); 1450 1451 return 0; 1452} 1453 1454static int ath6kl_close(struct net_device *dev) 1455{ 1456 struct ath6kl *ar = ath6kl_priv(dev); 1457 struct ath6kl_vif *vif = netdev_priv(dev); 1458 1459 netif_stop_queue(dev); 1460 1461 ath6kl_disconnect(ar); 1462 1463 if (test_bit(WMI_READY, &ar->flag)) { 1464 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1465 0, 0, 0)) 1466 return -EIO; 1467 1468 clear_bit(WLAN_ENABLED, &vif->flags); 1469 } 1470 1471 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1472 1473 return 0; 1474} 1475 1476static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1477{ 1478 struct ath6kl *ar = ath6kl_priv(dev); 1479 1480 return &ar->net_stats; 1481} 1482 1483static struct net_device_ops ath6kl_netdev_ops = { 1484 .ndo_open = ath6kl_open, 1485 .ndo_stop = ath6kl_close, 1486 .ndo_start_xmit = ath6kl_data_tx, 1487 .ndo_get_stats = ath6kl_get_stats, 1488}; 1489 1490void init_netdev(struct net_device *dev) 1491{ 1492 dev->netdev_ops = &ath6kl_netdev_ops; 1493 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1494 1495 dev->needed_headroom = ETH_HLEN; 1496 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1497 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1498 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1499 1500 return; 1501} 1502