main.c revision 240d279940ef496e9456db2287b7989f6521e2e2
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 /* TODO: Findout vif */ 26 struct ath6kl_vif *vif = ar->vif; 27 struct ath6kl_sta *conn = NULL; 28 u8 i, max_conn; 29 30 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 31 32 for (i = 0; i < max_conn; i++) { 33 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 34 conn = &ar->sta_list[i]; 35 break; 36 } 37 } 38 39 return conn; 40} 41 42struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 43{ 44 struct ath6kl_sta *conn = NULL; 45 u8 ctr; 46 47 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 48 if (ar->sta_list[ctr].aid == aid) { 49 conn = &ar->sta_list[ctr]; 50 break; 51 } 52 } 53 return conn; 54} 55 56static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, 57 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) 58{ 59 struct ath6kl_sta *sta; 60 u8 free_slot; 61 62 free_slot = aid - 1; 63 64 sta = &ar->sta_list[free_slot]; 65 memcpy(sta->mac, mac, ETH_ALEN); 66 if (ielen <= ATH6KL_MAX_IE) 67 memcpy(sta->wpa_ie, wpaie, ielen); 68 sta->aid = aid; 69 sta->keymgmt = keymgmt; 70 sta->ucipher = ucipher; 71 sta->auth = auth; 72 73 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 74 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 75} 76 77static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 78{ 79 struct ath6kl_sta *sta = &ar->sta_list[i]; 80 81 /* empty the queued pkts in the PS queue if any */ 82 spin_lock_bh(&sta->psq_lock); 83 skb_queue_purge(&sta->psq); 84 spin_unlock_bh(&sta->psq_lock); 85 86 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 87 sizeof(struct wmi_per_sta_stat)); 88 memset(sta->mac, 0, ETH_ALEN); 89 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 90 sta->aid = 0; 91 sta->sta_flags = 0; 92 93 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 94 95} 96 97static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 98{ 99 u8 i, removed = 0; 100 101 if (is_zero_ether_addr(mac)) 102 return removed; 103 104 if (is_broadcast_ether_addr(mac)) { 105 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 106 107 for (i = 0; i < AP_MAX_NUM_STA; i++) { 108 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 109 ath6kl_sta_cleanup(ar, i); 110 removed = 1; 111 } 112 } 113 } else { 114 for (i = 0; i < AP_MAX_NUM_STA; i++) { 115 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 116 ath6kl_dbg(ATH6KL_DBG_TRC, 117 "deleting station %pM aid=%d reason=%d\n", 118 mac, ar->sta_list[i].aid, reason); 119 ath6kl_sta_cleanup(ar, i); 120 removed = 1; 121 break; 122 } 123 } 124 } 125 126 return removed; 127} 128 129enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 130{ 131 struct ath6kl *ar = devt; 132 return ar->ac2ep_map[ac]; 133} 134 135struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 136{ 137 struct ath6kl_cookie *cookie; 138 139 cookie = ar->cookie_list; 140 if (cookie != NULL) { 141 ar->cookie_list = cookie->arc_list_next; 142 ar->cookie_count--; 143 } 144 145 return cookie; 146} 147 148void ath6kl_cookie_init(struct ath6kl *ar) 149{ 150 u32 i; 151 152 ar->cookie_list = NULL; 153 ar->cookie_count = 0; 154 155 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 156 157 for (i = 0; i < MAX_COOKIE_NUM; i++) 158 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 159} 160 161void ath6kl_cookie_cleanup(struct ath6kl *ar) 162{ 163 ar->cookie_list = NULL; 164 ar->cookie_count = 0; 165} 166 167void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 168{ 169 /* Insert first */ 170 171 if (!ar || !cookie) 172 return; 173 174 cookie->arc_list_next = ar->cookie_list; 175 ar->cookie_list = cookie; 176 ar->cookie_count++; 177} 178 179/* set the window address register (using 4-byte register access ). */ 180static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 181{ 182 int status; 183 s32 i; 184 __le32 addr_val; 185 186 /* 187 * Write bytes 1,2,3 of the register to set the upper address bytes, 188 * the LSB is written last to initiate the access cycle 189 */ 190 191 for (i = 1; i <= 3; i++) { 192 /* 193 * Fill the buffer with the address byte value we want to 194 * hit 4 times. No need to worry about endianness as the 195 * same byte is copied to all four bytes of addr_val at 196 * any time. 197 */ 198 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4); 199 200 /* 201 * Hit each byte of the register address with a 4-byte 202 * write operation to the same address, this is a harmless 203 * operation. 204 */ 205 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val, 206 4, HIF_WR_SYNC_BYTE_FIX); 207 if (status) 208 break; 209 } 210 211 if (status) { 212 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 213 addr, reg_addr); 214 return status; 215 } 216 217 /* 218 * Write the address register again, this time write the whole 219 * 4-byte value. The effect here is that the LSB write causes the 220 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 221 * effect since we are writing the same values again 222 */ 223 addr_val = cpu_to_le32(addr); 224 status = hif_read_write_sync(ar, reg_addr, 225 (u8 *)&(addr_val), 226 4, HIF_WR_SYNC_BYTE_INC); 227 228 if (status) { 229 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 230 addr, reg_addr); 231 return status; 232 } 233 234 return 0; 235} 236 237/* 238 * Read from the hardware through its diagnostic window. No cooperation 239 * from the firmware is required for this. 240 */ 241int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 242{ 243 int ret; 244 245 /* set window register to start read cycle */ 246 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address); 247 if (ret) 248 return ret; 249 250 /* read the data */ 251 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value, 252 sizeof(*value), HIF_RD_SYNC_BYTE_INC); 253 if (ret) { 254 ath6kl_warn("failed to read32 through diagnose window: %d\n", 255 ret); 256 return ret; 257 } 258 259 return 0; 260} 261 262/* 263 * Write to the ATH6KL through its diagnostic window. No cooperation from 264 * the Target is required for this. 265 */ 266int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 267{ 268 int ret; 269 270 /* set write data */ 271 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value, 272 sizeof(value), HIF_WR_SYNC_BYTE_INC); 273 if (ret) { 274 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 275 address, value); 276 return ret; 277 } 278 279 /* set window register, which starts the write cycle */ 280 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 281 address); 282} 283 284int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 285{ 286 u32 count, *buf = data; 287 int ret; 288 289 if (WARN_ON(length % 4)) 290 return -EINVAL; 291 292 for (count = 0; count < length / 4; count++, address += 4) { 293 ret = ath6kl_diag_read32(ar, address, &buf[count]); 294 if (ret) 295 return ret; 296 } 297 298 return 0; 299} 300 301int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 302{ 303 u32 count; 304 __le32 *buf = data; 305 int ret; 306 307 if (WARN_ON(length % 4)) 308 return -EINVAL; 309 310 for (count = 0; count < length / 4; count++, address += 4) { 311 ret = ath6kl_diag_write32(ar, address, buf[count]); 312 if (ret) 313 return ret; 314 } 315 316 return 0; 317} 318 319int ath6kl_read_fwlogs(struct ath6kl *ar) 320{ 321 struct ath6kl_dbglog_hdr debug_hdr; 322 struct ath6kl_dbglog_buf debug_buf; 323 u32 address, length, dropped, firstbuf, debug_hdr_addr; 324 int ret = 0, loop; 325 u8 *buf; 326 327 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 328 if (!buf) 329 return -ENOMEM; 330 331 address = TARG_VTOP(ar->target_type, 332 ath6kl_get_hi_item_addr(ar, 333 HI_ITEM(hi_dbglog_hdr))); 334 335 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 336 if (ret) 337 goto out; 338 339 /* Get the contents of the ring buffer */ 340 if (debug_hdr_addr == 0) { 341 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 342 ret = -EINVAL; 343 goto out; 344 } 345 346 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 347 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 348 349 address = TARG_VTOP(ar->target_type, 350 le32_to_cpu(debug_hdr.dbuf_addr)); 351 firstbuf = address; 352 dropped = le32_to_cpu(debug_hdr.dropped); 353 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 354 355 loop = 100; 356 357 do { 358 address = TARG_VTOP(ar->target_type, 359 le32_to_cpu(debug_buf.buffer_addr)); 360 length = le32_to_cpu(debug_buf.length); 361 362 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 363 le32_to_cpu(debug_buf.bufsize))) { 364 length = ALIGN(length, 4); 365 366 ret = ath6kl_diag_read(ar, address, 367 buf, length); 368 if (ret) 369 goto out; 370 371 ath6kl_debug_fwlog_event(ar, buf, length); 372 } 373 374 address = TARG_VTOP(ar->target_type, 375 le32_to_cpu(debug_buf.next)); 376 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 377 if (ret) 378 goto out; 379 380 loop--; 381 382 if (WARN_ON(loop == 0)) { 383 ret = -ETIMEDOUT; 384 goto out; 385 } 386 } while (address != firstbuf); 387 388out: 389 kfree(buf); 390 391 return ret; 392} 393 394/* FIXME: move to a better place, target.h? */ 395#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 396#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 397 398static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 399 bool wait_fot_compltn, bool cold_reset) 400{ 401 int status = 0; 402 u32 address; 403 __le32 data; 404 405 if (target_type != TARGET_TYPE_AR6003 && 406 target_type != TARGET_TYPE_AR6004) 407 return; 408 409 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 410 cpu_to_le32(RESET_CONTROL_MBOX_RST); 411 412 switch (target_type) { 413 case TARGET_TYPE_AR6003: 414 address = AR6003_RESET_CONTROL_ADDRESS; 415 break; 416 case TARGET_TYPE_AR6004: 417 address = AR6004_RESET_CONTROL_ADDRESS; 418 break; 419 default: 420 address = AR6003_RESET_CONTROL_ADDRESS; 421 break; 422 } 423 424 status = ath6kl_diag_write32(ar, address, data); 425 426 if (status) 427 ath6kl_err("failed to reset target\n"); 428} 429 430void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 431 bool get_dbglogs) 432{ 433 struct ath6kl *ar = ath6kl_priv(dev); 434 struct ath6kl_vif *vif = netdev_priv(dev); 435 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 436 bool discon_issued; 437 438 netif_stop_queue(dev); 439 440 /* disable the target and the interrupts associated with it */ 441 if (test_bit(WMI_READY, &ar->flag)) { 442 discon_issued = (test_bit(CONNECTED, &vif->flags) || 443 test_bit(CONNECT_PEND, &vif->flags)); 444 ath6kl_disconnect(vif); 445 if (!keep_profile) 446 ath6kl_init_profile_info(ar); 447 448 del_timer(&vif->disconnect_timer); 449 450 clear_bit(WMI_READY, &ar->flag); 451 ath6kl_wmi_shutdown(ar->wmi); 452 clear_bit(WMI_ENABLED, &ar->flag); 453 ar->wmi = NULL; 454 455 /* 456 * After wmi_shudown all WMI events will be dropped. We 457 * need to cleanup the buffers allocated in AP mode and 458 * give disconnect notification to stack, which usually 459 * happens in the disconnect_event. Simulate the disconnect 460 * event by calling the function directly. Sometimes 461 * disconnect_event will be received when the debug logs 462 * are collected. 463 */ 464 if (discon_issued) 465 ath6kl_disconnect_event(vif, DISCONNECT_CMD, 466 (vif->nw_type & AP_NETWORK) ? 467 bcast_mac : vif->bssid, 468 0, NULL, 0); 469 470 ar->user_key_ctrl = 0; 471 472 } else { 473 ath6kl_dbg(ATH6KL_DBG_TRC, 474 "%s: wmi is not ready 0x%p 0x%p\n", 475 __func__, ar, ar->wmi); 476 477 /* Shut down WMI if we have started it */ 478 if (test_bit(WMI_ENABLED, &ar->flag)) { 479 ath6kl_dbg(ATH6KL_DBG_TRC, 480 "%s: shut down wmi\n", __func__); 481 ath6kl_wmi_shutdown(ar->wmi); 482 clear_bit(WMI_ENABLED, &ar->flag); 483 ar->wmi = NULL; 484 } 485 } 486 487 if (ar->htc_target) { 488 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 489 ath6kl_htc_stop(ar->htc_target); 490 } 491 492 /* 493 * Try to reset the device if we can. The driver may have been 494 * configure NOT to reset the target during a debug session. 495 */ 496 ath6kl_dbg(ATH6KL_DBG_TRC, 497 "attempting to reset target on instance destroy\n"); 498 ath6kl_reset_device(ar, ar->target_type, true, true); 499} 500 501static void ath6kl_install_static_wep_keys(struct ath6kl_vif *vif) 502{ 503 u8 index; 504 u8 keyusage; 505 506 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 507 if (vif->wep_key_list[index].key_len) { 508 keyusage = GROUP_USAGE; 509 if (index == vif->def_txkey_index) 510 keyusage |= TX_USAGE; 511 512 ath6kl_wmi_addkey_cmd(vif->ar->wmi, vif->fw_vif_idx, 513 index, 514 WEP_CRYPT, 515 keyusage, 516 vif->wep_key_list[index].key_len, 517 NULL, 518 vif->wep_key_list[index].key, 519 KEY_OP_INIT_VAL, NULL, 520 NO_SYNC_WMIFLAG); 521 } 522 } 523} 524 525void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel) 526{ 527 struct ath6kl *ar = vif->ar; 528 struct ath6kl_req_key *ik; 529 int res; 530 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 531 532 ik = &ar->ap_mode_bkey; 533 534 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 535 536 switch (vif->auth_mode) { 537 case NONE_AUTH: 538 if (vif->prwise_crypto == WEP_CRYPT) 539 ath6kl_install_static_wep_keys(vif); 540 break; 541 case WPA_PSK_AUTH: 542 case WPA2_PSK_AUTH: 543 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 544 if (!ik->valid) 545 break; 546 547 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 548 "the initial group key for AP mode\n"); 549 memset(key_rsc, 0, sizeof(key_rsc)); 550 res = ath6kl_wmi_addkey_cmd( 551 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 552 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 553 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 554 if (res) { 555 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 556 "addkey failed: %d\n", res); 557 } 558 break; 559 } 560 561 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, NONE_BSS_FILTER, 0); 562 set_bit(CONNECTED, &vif->flags); 563 netif_carrier_on(vif->ndev); 564} 565 566void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr, 567 u8 keymgmt, u8 ucipher, u8 auth, 568 u8 assoc_req_len, u8 *assoc_info) 569{ 570 struct ath6kl *ar = vif->ar; 571 u8 *ies = NULL, *wpa_ie = NULL, *pos; 572 size_t ies_len = 0; 573 struct station_info sinfo; 574 575 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 576 577 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 578 struct ieee80211_mgmt *mgmt = 579 (struct ieee80211_mgmt *) assoc_info; 580 if (ieee80211_is_assoc_req(mgmt->frame_control) && 581 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 582 sizeof(mgmt->u.assoc_req)) { 583 ies = mgmt->u.assoc_req.variable; 584 ies_len = assoc_info + assoc_req_len - ies; 585 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 586 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 587 + sizeof(mgmt->u.reassoc_req)) { 588 ies = mgmt->u.reassoc_req.variable; 589 ies_len = assoc_info + assoc_req_len - ies; 590 } 591 } 592 593 pos = ies; 594 while (pos && pos + 1 < ies + ies_len) { 595 if (pos + 2 + pos[1] > ies + ies_len) 596 break; 597 if (pos[0] == WLAN_EID_RSN) 598 wpa_ie = pos; /* RSN IE */ 599 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 600 pos[1] >= 4 && 601 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 602 if (pos[5] == 0x01) 603 wpa_ie = pos; /* WPA IE */ 604 else if (pos[5] == 0x04) { 605 wpa_ie = pos; /* WPS IE */ 606 break; /* overrides WPA/RSN IE */ 607 } 608 } 609 pos += 2 + pos[1]; 610 } 611 612 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 613 wpa_ie ? 2 + wpa_ie[1] : 0, 614 keymgmt, ucipher, auth); 615 616 /* send event to application */ 617 memset(&sinfo, 0, sizeof(sinfo)); 618 619 /* TODO: sinfo.generation */ 620 621 sinfo.assoc_req_ies = ies; 622 sinfo.assoc_req_ies_len = ies_len; 623 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 624 625 cfg80211_new_sta(vif->ndev, mac_addr, &sinfo, GFP_KERNEL); 626 627 netif_wake_queue(vif->ndev); 628} 629 630/* Functions for Tx credit handling */ 631void ath6k_credit_init(struct htc_credit_state_info *cred_info, 632 struct list_head *ep_list, 633 int tot_credits) 634{ 635 struct htc_endpoint_credit_dist *cur_ep_dist; 636 int count; 637 638 cred_info->cur_free_credits = tot_credits; 639 cred_info->total_avail_credits = tot_credits; 640 641 list_for_each_entry(cur_ep_dist, ep_list, list) { 642 if (cur_ep_dist->endpoint == ENDPOINT_0) 643 continue; 644 645 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 646 647 if (tot_credits > 4) 648 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 649 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 650 ath6kl_deposit_credit_to_ep(cred_info, 651 cur_ep_dist, 652 cur_ep_dist->cred_min); 653 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 654 } 655 656 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 657 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 658 cur_ep_dist->cred_min); 659 /* 660 * Control service is always marked active, it 661 * never goes inactive EVER. 662 */ 663 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 664 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 665 /* this is the lowest priority data endpoint */ 666 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 667 668 /* 669 * Streams have to be created (explicit | implicit) for all 670 * kinds of traffic. BE endpoints are also inactive in the 671 * beginning. When BE traffic starts it creates implicit 672 * streams that redistributes credits. 673 * 674 * Note: all other endpoints have minimums set but are 675 * initially given NO credits. credits will be distributed 676 * as traffic activity demands 677 */ 678 } 679 680 WARN_ON(cred_info->cur_free_credits <= 0); 681 682 list_for_each_entry(cur_ep_dist, ep_list, list) { 683 if (cur_ep_dist->endpoint == ENDPOINT_0) 684 continue; 685 686 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 687 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 688 else { 689 /* 690 * For the remaining data endpoints, we assume that 691 * each cred_per_msg are the same. We use a simple 692 * calculation here, we take the remaining credits 693 * and determine how many max messages this can 694 * cover and then set each endpoint's normal value 695 * equal to 3/4 this amount. 696 */ 697 count = (cred_info->cur_free_credits / 698 cur_ep_dist->cred_per_msg) 699 * cur_ep_dist->cred_per_msg; 700 count = (count * 3) >> 2; 701 count = max(count, cur_ep_dist->cred_per_msg); 702 cur_ep_dist->cred_norm = count; 703 704 } 705 } 706} 707 708/* initialize and setup credit distribution */ 709int ath6k_setup_credit_dist(void *htc_handle, 710 struct htc_credit_state_info *cred_info) 711{ 712 u16 servicepriority[5]; 713 714 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 715 716 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 717 servicepriority[1] = WMI_DATA_VO_SVC; 718 servicepriority[2] = WMI_DATA_VI_SVC; 719 servicepriority[3] = WMI_DATA_BE_SVC; 720 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 721 722 /* set priority list */ 723 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 724 725 return 0; 726} 727 728/* reduce an ep's credits back to a set limit */ 729static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 730 struct htc_endpoint_credit_dist *ep_dist, 731 int limit) 732{ 733 int credits; 734 735 ep_dist->cred_assngd = limit; 736 737 if (ep_dist->credits <= limit) 738 return; 739 740 credits = ep_dist->credits - limit; 741 ep_dist->credits -= credits; 742 cred_info->cur_free_credits += credits; 743} 744 745static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 746 struct list_head *epdist_list) 747{ 748 struct htc_endpoint_credit_dist *cur_dist_list; 749 750 list_for_each_entry(cur_dist_list, epdist_list, list) { 751 if (cur_dist_list->endpoint == ENDPOINT_0) 752 continue; 753 754 if (cur_dist_list->cred_to_dist > 0) { 755 cur_dist_list->credits += 756 cur_dist_list->cred_to_dist; 757 cur_dist_list->cred_to_dist = 0; 758 if (cur_dist_list->credits > 759 cur_dist_list->cred_assngd) 760 ath6k_reduce_credits(cred_info, 761 cur_dist_list, 762 cur_dist_list->cred_assngd); 763 764 if (cur_dist_list->credits > 765 cur_dist_list->cred_norm) 766 ath6k_reduce_credits(cred_info, cur_dist_list, 767 cur_dist_list->cred_norm); 768 769 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 770 if (cur_dist_list->txq_depth == 0) 771 ath6k_reduce_credits(cred_info, 772 cur_dist_list, 0); 773 } 774 } 775 } 776} 777 778/* 779 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 780 * question. 781 */ 782void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 783 struct htc_endpoint_credit_dist *ep_dist) 784{ 785 struct htc_endpoint_credit_dist *curdist_list; 786 int credits = 0; 787 int need; 788 789 if (ep_dist->svc_id == WMI_CONTROL_SVC) 790 goto out; 791 792 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 793 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 794 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 795 goto out; 796 797 /* 798 * For all other services, we follow a simple algorithm of: 799 * 800 * 1. checking the free pool for credits 801 * 2. checking lower priority endpoints for credits to take 802 */ 803 804 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 805 806 if (credits >= ep_dist->seek_cred) 807 goto out; 808 809 /* 810 * We don't have enough in the free pool, try taking away from 811 * lower priority services The rule for taking away credits: 812 * 813 * 1. Only take from lower priority endpoints 814 * 2. Only take what is allocated above the minimum (never 815 * starve an endpoint completely) 816 * 3. Only take what you need. 817 */ 818 819 list_for_each_entry_reverse(curdist_list, 820 &cred_info->lowestpri_ep_dist, 821 list) { 822 if (curdist_list == ep_dist) 823 break; 824 825 need = ep_dist->seek_cred - cred_info->cur_free_credits; 826 827 if ((curdist_list->cred_assngd - need) >= 828 curdist_list->cred_min) { 829 /* 830 * The current one has been allocated more than 831 * it's minimum and it has enough credits assigned 832 * above it's minimum to fulfill our need try to 833 * take away just enough to fulfill our need. 834 */ 835 ath6k_reduce_credits(cred_info, curdist_list, 836 curdist_list->cred_assngd - need); 837 838 if (cred_info->cur_free_credits >= 839 ep_dist->seek_cred) 840 break; 841 } 842 843 if (curdist_list->endpoint == ENDPOINT_0) 844 break; 845 } 846 847 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 848 849out: 850 /* did we find some credits? */ 851 if (credits) 852 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 853 854 ep_dist->seek_cred = 0; 855} 856 857/* redistribute credits based on activity change */ 858static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 859 struct list_head *ep_dist_list) 860{ 861 struct htc_endpoint_credit_dist *curdist_list; 862 863 list_for_each_entry(curdist_list, ep_dist_list, list) { 864 if (curdist_list->endpoint == ENDPOINT_0) 865 continue; 866 867 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 868 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 869 curdist_list->dist_flags |= HTC_EP_ACTIVE; 870 871 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 872 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 873 if (curdist_list->txq_depth == 0) 874 ath6k_reduce_credits(info, 875 curdist_list, 0); 876 else 877 ath6k_reduce_credits(info, 878 curdist_list, 879 curdist_list->cred_min); 880 } 881 } 882} 883 884/* 885 * 886 * This function is invoked whenever endpoints require credit 887 * distributions. A lock is held while this function is invoked, this 888 * function shall NOT block. The ep_dist_list is a list of distribution 889 * structures in prioritized order as defined by the call to the 890 * htc_set_credit_dist() api. 891 */ 892void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 893 struct list_head *ep_dist_list, 894 enum htc_credit_dist_reason reason) 895{ 896 switch (reason) { 897 case HTC_CREDIT_DIST_SEND_COMPLETE: 898 ath6k_credit_update(cred_info, ep_dist_list); 899 break; 900 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 901 ath6k_redistribute_credits(cred_info, ep_dist_list); 902 break; 903 default: 904 break; 905 } 906 907 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 908 WARN_ON(cred_info->cur_free_credits < 0); 909} 910 911void disconnect_timer_handler(unsigned long ptr) 912{ 913 struct net_device *dev = (struct net_device *)ptr; 914 struct ath6kl_vif *vif = netdev_priv(dev); 915 916 ath6kl_init_profile_info(vif->ar); 917 ath6kl_disconnect(vif); 918} 919 920void ath6kl_disconnect(struct ath6kl_vif *vif) 921{ 922 if (test_bit(CONNECTED, &vif->flags) || 923 test_bit(CONNECT_PEND, &vif->flags)) { 924 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx); 925 /* 926 * Disconnect command is issued, clear the connect pending 927 * flag. The connected flag will be cleared in 928 * disconnect event notification. 929 */ 930 clear_bit(CONNECT_PEND, &vif->flags); 931 } 932} 933 934void ath6kl_deep_sleep_enable(struct ath6kl *ar) 935{ 936 /* TODO: Pass vif instead of taking it from ar */ 937 struct ath6kl_vif *vif = ar->vif; 938 939 switch (vif->sme_state) { 940 case SME_CONNECTING: 941 cfg80211_connect_result(ar->net_dev, vif->bssid, NULL, 0, 942 NULL, 0, 943 WLAN_STATUS_UNSPECIFIED_FAILURE, 944 GFP_KERNEL); 945 break; 946 case SME_CONNECTED: 947 default: 948 /* 949 * FIXME: oddly enough smeState is in DISCONNECTED during 950 * suspend, why? Need to send disconnected event in that 951 * state. 952 */ 953 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 954 break; 955 } 956 957 if (test_bit(CONNECTED, &vif->flags) || 958 test_bit(CONNECT_PEND, &vif->flags)) 959 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 960 961 vif->sme_state = SME_DISCONNECTED; 962 963 /* disable scanning */ 964 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 0, 0, 965 0, 0, 0, 0, 0, 0, 0) != 0) 966 printk(KERN_WARNING "ath6kl: failed to disable scan " 967 "during suspend\n"); 968 969 ath6kl_cfg80211_scan_complete_event(vif, -ECANCELED); 970 971 /* save the current power mode before enabling power save */ 972 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 973 974 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0) 975 ath6kl_warn("ath6kl_deep_sleep_enable: " 976 "wmi_powermode_cmd failed\n"); 977} 978 979/* WMI Event handlers */ 980 981static const char *get_hw_id_string(u32 id) 982{ 983 switch (id) { 984 case AR6003_REV1_VERSION: 985 return "1.0"; 986 case AR6003_REV2_VERSION: 987 return "2.0"; 988 case AR6003_REV3_VERSION: 989 return "2.1.1"; 990 default: 991 return "unknown"; 992 } 993} 994 995void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 996{ 997 struct ath6kl *ar = devt; 998 struct net_device *dev = ar->net_dev; 999 1000 memcpy(dev->dev_addr, datap, ETH_ALEN); 1001 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 1002 __func__, dev->dev_addr); 1003 1004 ar->version.wlan_ver = sw_ver; 1005 ar->version.abi_ver = abi_ver; 1006 1007 snprintf(ar->wiphy->fw_version, 1008 sizeof(ar->wiphy->fw_version), 1009 "%u.%u.%u.%u", 1010 (ar->version.wlan_ver & 0xf0000000) >> 28, 1011 (ar->version.wlan_ver & 0x0f000000) >> 24, 1012 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1013 (ar->version.wlan_ver & 0x0000ffff)); 1014 1015 /* indicate to the waiting thread that the ready event was received */ 1016 set_bit(WMI_READY, &ar->flag); 1017 wake_up(&ar->event_wq); 1018 1019 ath6kl_info("hw %s fw %s%s\n", 1020 get_hw_id_string(ar->wiphy->hw_version), 1021 ar->wiphy->fw_version, 1022 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1023} 1024 1025void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status) 1026{ 1027 struct ath6kl *ar = vif->ar; 1028 1029 ath6kl_cfg80211_scan_complete_event(vif, status); 1030 1031 if (!ar->usr_bss_filter) { 1032 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1033 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1034 NONE_BSS_FILTER, 0); 1035 } 1036 1037 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1038} 1039 1040void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel, u8 *bssid, 1041 u16 listen_int, u16 beacon_int, 1042 enum network_type net_type, u8 beacon_ie_len, 1043 u8 assoc_req_len, u8 assoc_resp_len, 1044 u8 *assoc_info) 1045{ 1046 struct ath6kl *ar = vif->ar; 1047 1048 ath6kl_cfg80211_connect_event(vif, channel, bssid, 1049 listen_int, beacon_int, 1050 net_type, beacon_ie_len, 1051 assoc_req_len, assoc_resp_len, 1052 assoc_info); 1053 1054 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 1055 vif->bss_ch = channel; 1056 1057 if ((vif->nw_type == INFRA_NETWORK)) 1058 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 1059 ar->listen_intvl_t, 1060 ar->listen_intvl_b); 1061 1062 netif_wake_queue(vif->ndev); 1063 1064 /* Update connect & link status atomically */ 1065 spin_lock_bh(&ar->lock); 1066 set_bit(CONNECTED, &vif->flags); 1067 clear_bit(CONNECT_PEND, &vif->flags); 1068 netif_carrier_on(vif->ndev); 1069 spin_unlock_bh(&ar->lock); 1070 1071 aggr_reset_state(vif->aggr_cntxt); 1072 vif->reconnect_flag = 0; 1073 1074 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1075 memset(ar->node_map, 0, sizeof(ar->node_map)); 1076 ar->node_num = 0; 1077 ar->next_ep_id = ENDPOINT_2; 1078 } 1079 1080 if (!ar->usr_bss_filter) { 1081 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1082 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1083 CURRENT_BSS_FILTER, 0); 1084 } 1085} 1086 1087void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast) 1088{ 1089 struct ath6kl_sta *sta; 1090 struct ath6kl *ar = vif->ar; 1091 u8 tsc[6]; 1092 1093 /* 1094 * For AP case, keyid will have aid of STA which sent pkt with 1095 * MIC error. Use this aid to get MAC & send it to hostapd. 1096 */ 1097 if (vif->nw_type == AP_NETWORK) { 1098 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1099 if (!sta) 1100 return; 1101 1102 ath6kl_dbg(ATH6KL_DBG_TRC, 1103 "ap tkip mic error received from aid=%d\n", keyid); 1104 1105 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1106 cfg80211_michael_mic_failure(vif->ndev, sta->mac, 1107 NL80211_KEYTYPE_PAIRWISE, keyid, 1108 tsc, GFP_KERNEL); 1109 } else 1110 ath6kl_cfg80211_tkip_micerr_event(vif, keyid, ismcast); 1111 1112} 1113 1114static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len) 1115{ 1116 struct wmi_target_stats *tgt_stats = 1117 (struct wmi_target_stats *) ptr; 1118 struct ath6kl *ar = vif->ar; 1119 struct target_stats *stats = &vif->target_stats; 1120 struct tkip_ccmp_stats *ccmp_stats; 1121 u8 ac; 1122 1123 if (len < sizeof(*tgt_stats)) 1124 return; 1125 1126 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1127 1128 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1129 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1130 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1131 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1132 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1133 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1134 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1135 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1136 stats->tx_rts_success_cnt += 1137 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1138 1139 for (ac = 0; ac < WMM_NUM_AC; ac++) 1140 stats->tx_pkt_per_ac[ac] += 1141 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1142 1143 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1144 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1145 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1146 stats->tx_mult_retry_cnt += 1147 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1148 stats->tx_rts_fail_cnt += 1149 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1150 stats->tx_ucast_rate = 1151 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1152 1153 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1154 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1155 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1156 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1157 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1158 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1159 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1160 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1161 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1162 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1163 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1164 stats->rx_key_cache_miss += 1165 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1166 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1167 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1168 stats->rx_ucast_rate = 1169 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1170 1171 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1172 1173 stats->tkip_local_mic_fail += 1174 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1175 stats->tkip_cnter_measures_invoked += 1176 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1177 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1178 1179 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1180 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1181 1182 stats->pwr_save_fail_cnt += 1183 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1184 stats->noise_floor_calib = 1185 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1186 1187 stats->cs_bmiss_cnt += 1188 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1189 stats->cs_low_rssi_cnt += 1190 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1191 stats->cs_connect_cnt += 1192 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1193 stats->cs_discon_cnt += 1194 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1195 1196 stats->cs_ave_beacon_rssi = 1197 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1198 1199 stats->cs_last_roam_msec = 1200 tgt_stats->cserv_stats.cs_last_roam_msec; 1201 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1202 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1203 1204 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1205 1206 stats->wow_pkt_dropped += 1207 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1208 stats->wow_host_pkt_wakeups += 1209 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1210 stats->wow_host_evt_wakeups += 1211 tgt_stats->wow_stats.wow_host_evt_wakeups; 1212 stats->wow_evt_discarded += 1213 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1214 1215 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 1216 clear_bit(STATS_UPDATE_PEND, &vif->flags); 1217 wake_up(&ar->event_wq); 1218 } 1219} 1220 1221static void ath6kl_add_le32(__le32 *var, __le32 val) 1222{ 1223 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1224} 1225 1226void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len) 1227{ 1228 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1229 struct ath6kl *ar = vif->ar; 1230 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1231 struct wmi_per_sta_stat *st_ap, *st_p; 1232 u8 ac; 1233 1234 if (vif->nw_type == AP_NETWORK) { 1235 if (len < sizeof(*p)) 1236 return; 1237 1238 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1239 st_ap = &ap->sta[ac]; 1240 st_p = &p->sta[ac]; 1241 1242 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1243 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1244 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1245 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1246 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1247 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1248 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1249 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1250 } 1251 1252 } else { 1253 ath6kl_update_target_stats(vif, ptr, len); 1254 } 1255} 1256 1257void ath6kl_wakeup_event(void *dev) 1258{ 1259 struct ath6kl *ar = (struct ath6kl *) dev; 1260 1261 wake_up(&ar->event_wq); 1262} 1263 1264void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1265{ 1266 struct ath6kl *ar = (struct ath6kl *) devt; 1267 1268 ar->tx_pwr = tx_pwr; 1269 wake_up(&ar->event_wq); 1270} 1271 1272void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid) 1273{ 1274 struct ath6kl_sta *conn; 1275 struct sk_buff *skb; 1276 bool psq_empty = false; 1277 struct ath6kl *ar = vif->ar; 1278 1279 conn = ath6kl_find_sta_by_aid(ar, aid); 1280 1281 if (!conn) 1282 return; 1283 /* 1284 * Send out a packet queued on ps queue. When the ps queue 1285 * becomes empty update the PVB for this station. 1286 */ 1287 spin_lock_bh(&conn->psq_lock); 1288 psq_empty = skb_queue_empty(&conn->psq); 1289 spin_unlock_bh(&conn->psq_lock); 1290 1291 if (psq_empty) 1292 /* TODO: Send out a NULL data frame */ 1293 return; 1294 1295 spin_lock_bh(&conn->psq_lock); 1296 skb = skb_dequeue(&conn->psq); 1297 spin_unlock_bh(&conn->psq_lock); 1298 1299 conn->sta_flags |= STA_PS_POLLED; 1300 ath6kl_data_tx(skb, vif->ndev); 1301 conn->sta_flags &= ~STA_PS_POLLED; 1302 1303 spin_lock_bh(&conn->psq_lock); 1304 psq_empty = skb_queue_empty(&conn->psq); 1305 spin_unlock_bh(&conn->psq_lock); 1306 1307 if (psq_empty) 1308 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 1309} 1310 1311void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif) 1312{ 1313 bool mcastq_empty = false; 1314 struct sk_buff *skb; 1315 struct ath6kl *ar = vif->ar; 1316 1317 /* 1318 * If there are no associated STAs, ignore the DTIM expiry event. 1319 * There can be potential race conditions where the last associated 1320 * STA may disconnect & before the host could clear the 'Indicate 1321 * DTIM' request to the firmware, the firmware would have just 1322 * indicated a DTIM expiry event. The race is between 'clear DTIM 1323 * expiry cmd' going from the host to the firmware & the DTIM 1324 * expiry event happening from the firmware to the host. 1325 */ 1326 if (!ar->sta_list_index) 1327 return; 1328 1329 spin_lock_bh(&ar->mcastpsq_lock); 1330 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1331 spin_unlock_bh(&ar->mcastpsq_lock); 1332 1333 if (mcastq_empty) 1334 return; 1335 1336 /* set the STA flag to dtim_expired for the frame to go out */ 1337 set_bit(DTIM_EXPIRED, &vif->flags); 1338 1339 spin_lock_bh(&ar->mcastpsq_lock); 1340 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1341 spin_unlock_bh(&ar->mcastpsq_lock); 1342 1343 ath6kl_data_tx(skb, vif->ndev); 1344 1345 spin_lock_bh(&ar->mcastpsq_lock); 1346 } 1347 spin_unlock_bh(&ar->mcastpsq_lock); 1348 1349 clear_bit(DTIM_EXPIRED, &vif->flags); 1350 1351 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1352 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 1353} 1354 1355void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason, u8 *bssid, 1356 u8 assoc_resp_len, u8 *assoc_info, 1357 u16 prot_reason_status) 1358{ 1359 struct ath6kl *ar = vif->ar; 1360 1361 if (vif->nw_type == AP_NETWORK) { 1362 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1363 return; 1364 1365 /* if no more associated STAs, empty the mcast PS q */ 1366 if (ar->sta_list_index == 0) { 1367 spin_lock_bh(&ar->mcastpsq_lock); 1368 skb_queue_purge(&ar->mcastpsq); 1369 spin_unlock_bh(&ar->mcastpsq_lock); 1370 1371 /* clear the LSB of the TIM IE's BitMapCtl field */ 1372 if (test_bit(WMI_READY, &ar->flag)) 1373 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 1374 MCAST_AID, 0); 1375 } 1376 1377 if (!is_broadcast_ether_addr(bssid)) { 1378 /* send event to application */ 1379 cfg80211_del_sta(vif->ndev, bssid, GFP_KERNEL); 1380 } 1381 1382 if (memcmp(vif->ndev->dev_addr, bssid, ETH_ALEN) == 0) { 1383 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1384 clear_bit(CONNECTED, &vif->flags); 1385 } 1386 return; 1387 } 1388 1389 ath6kl_cfg80211_disconnect_event(vif, reason, bssid, 1390 assoc_resp_len, assoc_info, 1391 prot_reason_status); 1392 1393 aggr_reset_state(vif->aggr_cntxt); 1394 1395 del_timer(&vif->disconnect_timer); 1396 1397 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1398 "disconnect reason is %d\n", reason); 1399 1400 /* 1401 * If the event is due to disconnect cmd from the host, only they 1402 * the target would stop trying to connect. Under any other 1403 * condition, target would keep trying to connect. 1404 */ 1405 if (reason == DISCONNECT_CMD) { 1406 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1407 ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx, 1408 NONE_BSS_FILTER, 0); 1409 } else { 1410 set_bit(CONNECT_PEND, &vif->flags); 1411 if (((reason == ASSOC_FAILED) && 1412 (prot_reason_status == 0x11)) || 1413 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1414 && (vif->reconnect_flag == 1))) { 1415 set_bit(CONNECTED, &vif->flags); 1416 return; 1417 } 1418 } 1419 1420 /* update connect & link status atomically */ 1421 spin_lock_bh(&ar->lock); 1422 clear_bit(CONNECTED, &vif->flags); 1423 netif_carrier_off(vif->ndev); 1424 spin_unlock_bh(&ar->lock); 1425 1426 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1427 vif->reconnect_flag = 0; 1428 1429 if (reason != CSERV_DISCONNECT) 1430 ar->user_key_ctrl = 0; 1431 1432 netif_stop_queue(vif->ndev); 1433 memset(vif->bssid, 0, sizeof(vif->bssid)); 1434 vif->bss_ch = 0; 1435 1436 ath6kl_tx_data_cleanup(ar); 1437} 1438 1439static int ath6kl_open(struct net_device *dev) 1440{ 1441 struct ath6kl *ar = ath6kl_priv(dev); 1442 struct ath6kl_vif *vif = netdev_priv(dev); 1443 1444 spin_lock_bh(&ar->lock); 1445 1446 set_bit(WLAN_ENABLED, &vif->flags); 1447 1448 if (test_bit(CONNECTED, &vif->flags)) { 1449 netif_carrier_on(dev); 1450 netif_wake_queue(dev); 1451 } else 1452 netif_carrier_off(dev); 1453 1454 spin_unlock_bh(&ar->lock); 1455 1456 return 0; 1457} 1458 1459static int ath6kl_close(struct net_device *dev) 1460{ 1461 struct ath6kl *ar = ath6kl_priv(dev); 1462 struct ath6kl_vif *vif = netdev_priv(dev); 1463 1464 netif_stop_queue(dev); 1465 1466 ath6kl_disconnect(vif); 1467 1468 if (test_bit(WMI_READY, &ar->flag)) { 1469 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 1470 0, 0, 0, 0, 0, 0, 0, 0, 0)) 1471 return -EIO; 1472 1473 clear_bit(WLAN_ENABLED, &vif->flags); 1474 } 1475 1476 ath6kl_cfg80211_scan_complete_event(vif, -ECANCELED); 1477 1478 return 0; 1479} 1480 1481static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1482{ 1483 struct ath6kl_vif *vif = netdev_priv(dev); 1484 1485 return &vif->net_stats; 1486} 1487 1488static struct net_device_ops ath6kl_netdev_ops = { 1489 .ndo_open = ath6kl_open, 1490 .ndo_stop = ath6kl_close, 1491 .ndo_start_xmit = ath6kl_data_tx, 1492 .ndo_get_stats = ath6kl_get_stats, 1493}; 1494 1495void init_netdev(struct net_device *dev) 1496{ 1497 dev->netdev_ops = &ath6kl_netdev_ops; 1498 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1499 1500 dev->needed_headroom = ETH_HLEN; 1501 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1502 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1503 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1504 1505 return; 1506} 1507