main.c revision 3450334f392bca1fccbf04a90020161ec4404a1e
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 /* TODO: Findout vif */ 502 struct ath6kl_vif *vif = ar->vif; 503 u8 index; 504 u8 keyusage; 505 506 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 507 if (ar->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(ar->wmi, 513 index, 514 WEP_CRYPT, 515 keyusage, 516 ar->wep_key_list[index].key_len, 517 NULL, 518 ar->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 *ar, u16 channel) 526{ 527 struct ath6kl_req_key *ik; 528 int res; 529 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 530 /* TODO: Pass vif instead of taking it from ar */ 531 struct ath6kl_vif *vif = ar->vif; 532 533 ik = &ar->ap_mode_bkey; 534 535 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 536 537 switch (vif->auth_mode) { 538 case NONE_AUTH: 539 if (vif->prwise_crypto == WEP_CRYPT) 540 ath6kl_install_static_wep_keys(ar); 541 break; 542 case WPA_PSK_AUTH: 543 case WPA2_PSK_AUTH: 544 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 545 if (!ik->valid) 546 break; 547 548 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 549 "the initial group key for AP mode\n"); 550 memset(key_rsc, 0, sizeof(key_rsc)); 551 res = ath6kl_wmi_addkey_cmd( 552 ar->wmi, ik->key_index, ik->key_type, 553 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 554 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 555 if (res) { 556 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 557 "addkey failed: %d\n", res); 558 } 559 break; 560 } 561 562 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 563 set_bit(CONNECTED, &vif->flags); 564 netif_carrier_on(ar->net_dev); 565} 566 567void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr, 568 u8 keymgmt, u8 ucipher, u8 auth, 569 u8 assoc_req_len, u8 *assoc_info) 570{ 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(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL); 626 627 netif_wake_queue(ar->net_dev); 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 *ar = ath6kl_priv(dev); 915 916 ath6kl_init_profile_info(ar); 917 ath6kl_disconnect(ar); 918} 919 920void ath6kl_disconnect(struct ath6kl *ar) 921{ 922 /* TODO: Pass vif instead of taking it from ar */ 923 struct ath6kl_vif *vif = ar->vif; 924 925 if (test_bit(CONNECTED, &vif->flags) || 926 test_bit(CONNECT_PEND, &vif->flags)) { 927 ath6kl_wmi_disconnect_cmd(ar->wmi); 928 /* 929 * Disconnect command is issued, clear the connect pending 930 * flag. The connected flag will be cleared in 931 * disconnect event notification. 932 */ 933 clear_bit(CONNECT_PEND, &vif->flags); 934 } 935} 936 937void ath6kl_deep_sleep_enable(struct ath6kl *ar) 938{ 939 /* TODO: Pass vif instead of taking it from ar */ 940 struct ath6kl_vif *vif = ar->vif; 941 942 switch (ar->sme_state) { 943 case SME_CONNECTING: 944 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 945 NULL, 0, 946 WLAN_STATUS_UNSPECIFIED_FAILURE, 947 GFP_KERNEL); 948 break; 949 case SME_CONNECTED: 950 default: 951 /* 952 * FIXME: oddly enough smeState is in DISCONNECTED during 953 * suspend, why? Need to send disconnected event in that 954 * state. 955 */ 956 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 957 break; 958 } 959 960 if (test_bit(CONNECTED, &vif->flags) || 961 test_bit(CONNECT_PEND, &vif->flags)) 962 ath6kl_wmi_disconnect_cmd(ar->wmi); 963 964 ar->sme_state = SME_DISCONNECTED; 965 966 /* disable scanning */ 967 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 968 0, 0) != 0) 969 printk(KERN_WARNING "ath6kl: failed to disable scan " 970 "during suspend\n"); 971 972 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 973 974 /* save the current power mode before enabling power save */ 975 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 976 977 if (ath6kl_wmi_powermode_cmd(ar->wmi, REC_POWER) != 0) 978 ath6kl_warn("ath6kl_deep_sleep_enable: " 979 "wmi_powermode_cmd failed\n"); 980} 981 982/* WMI Event handlers */ 983 984static const char *get_hw_id_string(u32 id) 985{ 986 switch (id) { 987 case AR6003_REV1_VERSION: 988 return "1.0"; 989 case AR6003_REV2_VERSION: 990 return "2.0"; 991 case AR6003_REV3_VERSION: 992 return "2.1.1"; 993 default: 994 return "unknown"; 995 } 996} 997 998void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 999{ 1000 struct ath6kl *ar = devt; 1001 struct net_device *dev = ar->net_dev; 1002 1003 memcpy(dev->dev_addr, datap, ETH_ALEN); 1004 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 1005 __func__, dev->dev_addr); 1006 1007 ar->version.wlan_ver = sw_ver; 1008 ar->version.abi_ver = abi_ver; 1009 1010 snprintf(ar->wiphy->fw_version, 1011 sizeof(ar->wiphy->fw_version), 1012 "%u.%u.%u.%u", 1013 (ar->version.wlan_ver & 0xf0000000) >> 28, 1014 (ar->version.wlan_ver & 0x0f000000) >> 24, 1015 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1016 (ar->version.wlan_ver & 0x0000ffff)); 1017 1018 /* indicate to the waiting thread that the ready event was received */ 1019 set_bit(WMI_READY, &ar->flag); 1020 wake_up(&ar->event_wq); 1021 1022 ath6kl_info("hw %s fw %s%s\n", 1023 get_hw_id_string(ar->wiphy->hw_version), 1024 ar->wiphy->fw_version, 1025 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1026} 1027 1028void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1029{ 1030 /* TODO: Pass vif instead of taking it from ar */ 1031 struct ath6kl_vif *vif = ar->vif; 1032 1033 ath6kl_cfg80211_scan_complete_event(ar, status); 1034 1035 if (!ar->usr_bss_filter) { 1036 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1037 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1038 } 1039 1040 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1041} 1042 1043void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1044 u16 listen_int, u16 beacon_int, 1045 enum network_type net_type, u8 beacon_ie_len, 1046 u8 assoc_req_len, u8 assoc_resp_len, 1047 u8 *assoc_info) 1048{ 1049 /* TODO: findout vif instead of taking it from ar */ 1050 struct ath6kl_vif *vif = ar->vif; 1051 1052 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1053 listen_int, beacon_int, 1054 net_type, beacon_ie_len, 1055 assoc_req_len, assoc_resp_len, 1056 assoc_info); 1057 1058 memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 1059 ar->bss_ch = channel; 1060 1061 if ((ar->nw_type == INFRA_NETWORK)) 1062 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 1063 ar->listen_intvl_b); 1064 1065 netif_wake_queue(ar->net_dev); 1066 1067 /* Update connect & link status atomically */ 1068 spin_lock_bh(&ar->lock); 1069 set_bit(CONNECTED, &vif->flags); 1070 clear_bit(CONNECT_PEND, &vif->flags); 1071 netif_carrier_on(ar->net_dev); 1072 spin_unlock_bh(&ar->lock); 1073 1074 aggr_reset_state(ar->aggr_cntxt); 1075 ar->reconnect_flag = 0; 1076 1077 if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1078 memset(ar->node_map, 0, sizeof(ar->node_map)); 1079 ar->node_num = 0; 1080 ar->next_ep_id = ENDPOINT_2; 1081 } 1082 1083 if (!ar->usr_bss_filter) { 1084 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1085 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0); 1086 } 1087} 1088 1089void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1090{ 1091 struct ath6kl_sta *sta; 1092 u8 tsc[6]; 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 (ar->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(ar->net_dev, sta->mac, 1107 NL80211_KEYTYPE_PAIRWISE, keyid, 1108 tsc, GFP_KERNEL); 1109 } else 1110 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1111 1112} 1113 1114static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1115{ 1116 struct wmi_target_stats *tgt_stats = 1117 (struct wmi_target_stats *) ptr; 1118 struct target_stats *stats = &ar->target_stats; 1119 struct tkip_ccmp_stats *ccmp_stats; 1120 u8 ac; 1121 1122 if (len < sizeof(*tgt_stats)) 1123 return; 1124 1125 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1126 1127 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1128 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1129 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1130 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1131 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1132 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1133 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1134 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1135 stats->tx_rts_success_cnt += 1136 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1137 1138 for (ac = 0; ac < WMM_NUM_AC; ac++) 1139 stats->tx_pkt_per_ac[ac] += 1140 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1141 1142 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1143 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1144 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1145 stats->tx_mult_retry_cnt += 1146 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1147 stats->tx_rts_fail_cnt += 1148 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1149 stats->tx_ucast_rate = 1150 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1151 1152 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1153 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1154 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1155 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1156 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1157 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1158 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1159 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1160 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1161 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1162 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1163 stats->rx_key_cache_miss += 1164 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1165 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1166 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1167 stats->rx_ucast_rate = 1168 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1169 1170 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1171 1172 stats->tkip_local_mic_fail += 1173 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1174 stats->tkip_cnter_measures_invoked += 1175 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1176 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1177 1178 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1179 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1180 1181 stats->pwr_save_fail_cnt += 1182 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1183 stats->noise_floor_calib = 1184 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1185 1186 stats->cs_bmiss_cnt += 1187 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1188 stats->cs_low_rssi_cnt += 1189 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1190 stats->cs_connect_cnt += 1191 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1192 stats->cs_discon_cnt += 1193 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1194 1195 stats->cs_ave_beacon_rssi = 1196 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1197 1198 stats->cs_last_roam_msec = 1199 tgt_stats->cserv_stats.cs_last_roam_msec; 1200 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1201 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1202 1203 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1204 1205 stats->wow_pkt_dropped += 1206 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1207 stats->wow_host_pkt_wakeups += 1208 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1209 stats->wow_host_evt_wakeups += 1210 tgt_stats->wow_stats.wow_host_evt_wakeups; 1211 stats->wow_evt_discarded += 1212 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1213 1214 if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1215 clear_bit(STATS_UPDATE_PEND, &ar->flag); 1216 wake_up(&ar->event_wq); 1217 } 1218} 1219 1220static void ath6kl_add_le32(__le32 *var, __le32 val) 1221{ 1222 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1223} 1224 1225void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1226{ 1227 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1228 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1229 struct wmi_per_sta_stat *st_ap, *st_p; 1230 u8 ac; 1231 1232 if (ar->nw_type == AP_NETWORK) { 1233 if (len < sizeof(*p)) 1234 return; 1235 1236 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1237 st_ap = &ap->sta[ac]; 1238 st_p = &p->sta[ac]; 1239 1240 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1241 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1242 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1243 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1244 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1245 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1246 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1247 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1248 } 1249 1250 } else { 1251 ath6kl_update_target_stats(ar, ptr, len); 1252 } 1253} 1254 1255void ath6kl_wakeup_event(void *dev) 1256{ 1257 struct ath6kl *ar = (struct ath6kl *) dev; 1258 1259 wake_up(&ar->event_wq); 1260} 1261 1262void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1263{ 1264 struct ath6kl *ar = (struct ath6kl *) devt; 1265 1266 ar->tx_pwr = tx_pwr; 1267 wake_up(&ar->event_wq); 1268} 1269 1270void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1271{ 1272 struct ath6kl_sta *conn; 1273 struct sk_buff *skb; 1274 bool psq_empty = false; 1275 1276 conn = ath6kl_find_sta_by_aid(ar, aid); 1277 1278 if (!conn) 1279 return; 1280 /* 1281 * Send out a packet queued on ps queue. When the ps queue 1282 * becomes empty update the PVB for this station. 1283 */ 1284 spin_lock_bh(&conn->psq_lock); 1285 psq_empty = skb_queue_empty(&conn->psq); 1286 spin_unlock_bh(&conn->psq_lock); 1287 1288 if (psq_empty) 1289 /* TODO: Send out a NULL data frame */ 1290 return; 1291 1292 spin_lock_bh(&conn->psq_lock); 1293 skb = skb_dequeue(&conn->psq); 1294 spin_unlock_bh(&conn->psq_lock); 1295 1296 conn->sta_flags |= STA_PS_POLLED; 1297 ath6kl_data_tx(skb, ar->net_dev); 1298 conn->sta_flags &= ~STA_PS_POLLED; 1299 1300 spin_lock_bh(&conn->psq_lock); 1301 psq_empty = skb_queue_empty(&conn->psq); 1302 spin_unlock_bh(&conn->psq_lock); 1303 1304 if (psq_empty) 1305 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1306} 1307 1308void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1309{ 1310 bool mcastq_empty = false; 1311 struct sk_buff *skb; 1312 /* TODO: Pass vif instead of taking it from ar */ 1313 struct ath6kl_vif *vif = ar->vif; 1314 1315 /* 1316 * If there are no associated STAs, ignore the DTIM expiry event. 1317 * There can be potential race conditions where the last associated 1318 * STA may disconnect & before the host could clear the 'Indicate 1319 * DTIM' request to the firmware, the firmware would have just 1320 * indicated a DTIM expiry event. The race is between 'clear DTIM 1321 * expiry cmd' going from the host to the firmware & the DTIM 1322 * expiry event happening from the firmware to the host. 1323 */ 1324 if (!ar->sta_list_index) 1325 return; 1326 1327 spin_lock_bh(&ar->mcastpsq_lock); 1328 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1329 spin_unlock_bh(&ar->mcastpsq_lock); 1330 1331 if (mcastq_empty) 1332 return; 1333 1334 /* set the STA flag to dtim_expired for the frame to go out */ 1335 set_bit(DTIM_EXPIRED, &vif->flags); 1336 1337 spin_lock_bh(&ar->mcastpsq_lock); 1338 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1339 spin_unlock_bh(&ar->mcastpsq_lock); 1340 1341 ath6kl_data_tx(skb, ar->net_dev); 1342 1343 spin_lock_bh(&ar->mcastpsq_lock); 1344 } 1345 spin_unlock_bh(&ar->mcastpsq_lock); 1346 1347 clear_bit(DTIM_EXPIRED, &vif->flags); 1348 1349 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1350 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1351} 1352 1353void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1354 u8 assoc_resp_len, u8 *assoc_info, 1355 u16 prot_reason_status) 1356{ 1357 /* TODO: Findout vif instead of taking it from ar */ 1358 struct ath6kl_vif *vif = ar->vif; 1359 1360 if (ar->nw_type == AP_NETWORK) { 1361 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1362 return; 1363 1364 /* if no more associated STAs, empty the mcast PS q */ 1365 if (ar->sta_list_index == 0) { 1366 spin_lock_bh(&ar->mcastpsq_lock); 1367 skb_queue_purge(&ar->mcastpsq); 1368 spin_unlock_bh(&ar->mcastpsq_lock); 1369 1370 /* clear the LSB of the TIM IE's BitMapCtl field */ 1371 if (test_bit(WMI_READY, &ar->flag)) 1372 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1373 } 1374 1375 if (!is_broadcast_ether_addr(bssid)) { 1376 /* send event to application */ 1377 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1378 } 1379 1380 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) { 1381 memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list)); 1382 clear_bit(CONNECTED, &vif->flags); 1383 } 1384 return; 1385 } 1386 1387 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1388 assoc_resp_len, assoc_info, 1389 prot_reason_status); 1390 1391 aggr_reset_state(ar->aggr_cntxt); 1392 1393 del_timer(&ar->disconnect_timer); 1394 1395 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1396 "disconnect reason is %d\n", reason); 1397 1398 /* 1399 * If the event is due to disconnect cmd from the host, only they 1400 * the target would stop trying to connect. Under any other 1401 * condition, target would keep trying to connect. 1402 */ 1403 if (reason == DISCONNECT_CMD) { 1404 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1405 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1406 } else { 1407 set_bit(CONNECT_PEND, &vif->flags); 1408 if (((reason == ASSOC_FAILED) && 1409 (prot_reason_status == 0x11)) || 1410 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1411 && (ar->reconnect_flag == 1))) { 1412 set_bit(CONNECTED, &vif->flags); 1413 return; 1414 } 1415 } 1416 1417 /* update connect & link status atomically */ 1418 spin_lock_bh(&ar->lock); 1419 clear_bit(CONNECTED, &vif->flags); 1420 netif_carrier_off(ar->net_dev); 1421 spin_unlock_bh(&ar->lock); 1422 1423 if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1424 ar->reconnect_flag = 0; 1425 1426 if (reason != CSERV_DISCONNECT) 1427 ar->user_key_ctrl = 0; 1428 1429 netif_stop_queue(ar->net_dev); 1430 memset(ar->bssid, 0, sizeof(ar->bssid)); 1431 ar->bss_ch = 0; 1432 1433 ath6kl_tx_data_cleanup(ar); 1434} 1435 1436static int ath6kl_open(struct net_device *dev) 1437{ 1438 struct ath6kl *ar = ath6kl_priv(dev); 1439 struct ath6kl_vif *vif = netdev_priv(dev); 1440 1441 spin_lock_bh(&ar->lock); 1442 1443 set_bit(WLAN_ENABLED, &vif->flags); 1444 1445 if (test_bit(CONNECTED, &vif->flags)) { 1446 netif_carrier_on(dev); 1447 netif_wake_queue(dev); 1448 } else 1449 netif_carrier_off(dev); 1450 1451 spin_unlock_bh(&ar->lock); 1452 1453 return 0; 1454} 1455 1456static int ath6kl_close(struct net_device *dev) 1457{ 1458 struct ath6kl *ar = ath6kl_priv(dev); 1459 struct ath6kl_vif *vif = netdev_priv(dev); 1460 1461 netif_stop_queue(dev); 1462 1463 ath6kl_disconnect(ar); 1464 1465 if (test_bit(WMI_READY, &ar->flag)) { 1466 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1467 0, 0, 0)) 1468 return -EIO; 1469 1470 clear_bit(WLAN_ENABLED, &vif->flags); 1471 } 1472 1473 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1474 1475 return 0; 1476} 1477 1478static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1479{ 1480 struct ath6kl *ar = ath6kl_priv(dev); 1481 1482 return &ar->net_stats; 1483} 1484 1485static struct net_device_ops ath6kl_netdev_ops = { 1486 .ndo_open = ath6kl_open, 1487 .ndo_stop = ath6kl_close, 1488 .ndo_start_xmit = ath6kl_data_tx, 1489 .ndo_get_stats = ath6kl_get_stats, 1490}; 1491 1492void init_netdev(struct net_device *dev) 1493{ 1494 dev->netdev_ops = &ath6kl_netdev_ops; 1495 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1496 1497 dev->needed_headroom = ETH_HLEN; 1498 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1499 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1500 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1501 1502 return; 1503} 1504