1bdcd8170SKalle Valo /* 2bdcd8170SKalle Valo * Copyright (c) 2004-2011 Atheros Communications Inc. 3bdcd8170SKalle Valo * 4bdcd8170SKalle Valo * Permission to use, copy, modify, and/or distribute this software for any 5bdcd8170SKalle Valo * purpose with or without fee is hereby granted, provided that the above 6bdcd8170SKalle Valo * copyright notice and this permission notice appear in all copies. 7bdcd8170SKalle Valo * 8bdcd8170SKalle Valo * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9bdcd8170SKalle Valo * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10bdcd8170SKalle Valo * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11bdcd8170SKalle Valo * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12bdcd8170SKalle Valo * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13bdcd8170SKalle Valo * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14bdcd8170SKalle Valo * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15bdcd8170SKalle Valo */ 16bdcd8170SKalle Valo 17bdcd8170SKalle Valo #include "core.h" 18bdcd8170SKalle Valo #include "hif-ops.h" 19bdcd8170SKalle Valo #include "cfg80211.h" 20bdcd8170SKalle Valo #include "target.h" 21bdcd8170SKalle Valo #include "debug.h" 22bdcd8170SKalle Valo 23bdcd8170SKalle Valo struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr) 24bdcd8170SKalle Valo { 25bdcd8170SKalle Valo struct ath6kl_sta *conn = NULL; 26bdcd8170SKalle Valo u8 i, max_conn; 27bdcd8170SKalle Valo 28bdcd8170SKalle Valo max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 29bdcd8170SKalle Valo 30bdcd8170SKalle Valo for (i = 0; i < max_conn; i++) { 31bdcd8170SKalle Valo if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 32bdcd8170SKalle Valo conn = &ar->sta_list[i]; 33bdcd8170SKalle Valo break; 34bdcd8170SKalle Valo } 35bdcd8170SKalle Valo } 36bdcd8170SKalle Valo 37bdcd8170SKalle Valo return conn; 38bdcd8170SKalle Valo } 39bdcd8170SKalle Valo 40bdcd8170SKalle Valo struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 41bdcd8170SKalle Valo { 42bdcd8170SKalle Valo struct ath6kl_sta *conn = NULL; 43bdcd8170SKalle Valo u8 ctr; 44bdcd8170SKalle Valo 45bdcd8170SKalle Valo for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 46bdcd8170SKalle Valo if (ar->sta_list[ctr].aid == aid) { 47bdcd8170SKalle Valo conn = &ar->sta_list[ctr]; 48bdcd8170SKalle Valo break; 49bdcd8170SKalle Valo } 50bdcd8170SKalle Valo } 51bdcd8170SKalle Valo return conn; 52bdcd8170SKalle Valo } 53bdcd8170SKalle Valo 54bdcd8170SKalle Valo static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, 55bdcd8170SKalle Valo u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) 56bdcd8170SKalle Valo { 57bdcd8170SKalle Valo struct ath6kl_sta *sta; 58bdcd8170SKalle Valo u8 free_slot; 59bdcd8170SKalle Valo 60bdcd8170SKalle Valo free_slot = aid - 1; 61bdcd8170SKalle Valo 62bdcd8170SKalle Valo sta = &ar->sta_list[free_slot]; 63bdcd8170SKalle Valo memcpy(sta->mac, mac, ETH_ALEN); 643c774bbaSJouni Malinen if (ielen <= ATH6KL_MAX_IE) 65bdcd8170SKalle Valo memcpy(sta->wpa_ie, wpaie, ielen); 66bdcd8170SKalle Valo sta->aid = aid; 67bdcd8170SKalle Valo sta->keymgmt = keymgmt; 68bdcd8170SKalle Valo sta->ucipher = ucipher; 69bdcd8170SKalle Valo sta->auth = auth; 70bdcd8170SKalle Valo 71bdcd8170SKalle Valo ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 72bdcd8170SKalle Valo ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 73bdcd8170SKalle Valo } 74bdcd8170SKalle Valo 75bdcd8170SKalle Valo static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 76bdcd8170SKalle Valo { 77bdcd8170SKalle Valo struct ath6kl_sta *sta = &ar->sta_list[i]; 78bdcd8170SKalle Valo 79bdcd8170SKalle Valo /* empty the queued pkts in the PS queue if any */ 80bdcd8170SKalle Valo spin_lock_bh(&sta->psq_lock); 81bdcd8170SKalle Valo skb_queue_purge(&sta->psq); 82bdcd8170SKalle Valo spin_unlock_bh(&sta->psq_lock); 83bdcd8170SKalle Valo 84bdcd8170SKalle Valo memset(&ar->ap_stats.sta[sta->aid - 1], 0, 85bdcd8170SKalle Valo sizeof(struct wmi_per_sta_stat)); 86bdcd8170SKalle Valo memset(sta->mac, 0, ETH_ALEN); 87bdcd8170SKalle Valo memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 88bdcd8170SKalle Valo sta->aid = 0; 89bdcd8170SKalle Valo sta->sta_flags = 0; 90bdcd8170SKalle Valo 91bdcd8170SKalle Valo ar->sta_list_index = ar->sta_list_index & ~(1 << i); 92bdcd8170SKalle Valo 93bdcd8170SKalle Valo } 94bdcd8170SKalle Valo 95bdcd8170SKalle Valo static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 96bdcd8170SKalle Valo { 97bdcd8170SKalle Valo u8 i, removed = 0; 98bdcd8170SKalle Valo 99bdcd8170SKalle Valo if (is_zero_ether_addr(mac)) 100bdcd8170SKalle Valo return removed; 101bdcd8170SKalle Valo 102bdcd8170SKalle Valo if (is_broadcast_ether_addr(mac)) { 103bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 104bdcd8170SKalle Valo 105bdcd8170SKalle Valo for (i = 0; i < AP_MAX_NUM_STA; i++) { 106bdcd8170SKalle Valo if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 107bdcd8170SKalle Valo ath6kl_sta_cleanup(ar, i); 108bdcd8170SKalle Valo removed = 1; 109bdcd8170SKalle Valo } 110bdcd8170SKalle Valo } 111bdcd8170SKalle Valo } else { 112bdcd8170SKalle Valo for (i = 0; i < AP_MAX_NUM_STA; i++) { 113bdcd8170SKalle Valo if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 114bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, 115bdcd8170SKalle Valo "deleting station %pM aid=%d reason=%d\n", 116bdcd8170SKalle Valo mac, ar->sta_list[i].aid, reason); 117bdcd8170SKalle Valo ath6kl_sta_cleanup(ar, i); 118bdcd8170SKalle Valo removed = 1; 119bdcd8170SKalle Valo break; 120bdcd8170SKalle Valo } 121bdcd8170SKalle Valo } 122bdcd8170SKalle Valo } 123bdcd8170SKalle Valo 124bdcd8170SKalle Valo return removed; 125bdcd8170SKalle Valo } 126bdcd8170SKalle Valo 127bdcd8170SKalle Valo enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 128bdcd8170SKalle Valo { 129bdcd8170SKalle Valo struct ath6kl *ar = devt; 130bdcd8170SKalle Valo return ar->ac2ep_map[ac]; 131bdcd8170SKalle Valo } 132bdcd8170SKalle Valo 133bdcd8170SKalle Valo struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 134bdcd8170SKalle Valo { 135bdcd8170SKalle Valo struct ath6kl_cookie *cookie; 136bdcd8170SKalle Valo 137bdcd8170SKalle Valo cookie = ar->cookie_list; 138bdcd8170SKalle Valo if (cookie != NULL) { 139bdcd8170SKalle Valo ar->cookie_list = cookie->arc_list_next; 140bdcd8170SKalle Valo ar->cookie_count--; 141bdcd8170SKalle Valo } 142bdcd8170SKalle Valo 143bdcd8170SKalle Valo return cookie; 144bdcd8170SKalle Valo } 145bdcd8170SKalle Valo 146bdcd8170SKalle Valo void ath6kl_cookie_init(struct ath6kl *ar) 147bdcd8170SKalle Valo { 148bdcd8170SKalle Valo u32 i; 149bdcd8170SKalle Valo 150bdcd8170SKalle Valo ar->cookie_list = NULL; 151bdcd8170SKalle Valo ar->cookie_count = 0; 152bdcd8170SKalle Valo 153bdcd8170SKalle Valo memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 154bdcd8170SKalle Valo 155bdcd8170SKalle Valo for (i = 0; i < MAX_COOKIE_NUM; i++) 156bdcd8170SKalle Valo ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 157bdcd8170SKalle Valo } 158bdcd8170SKalle Valo 159bdcd8170SKalle Valo void ath6kl_cookie_cleanup(struct ath6kl *ar) 160bdcd8170SKalle Valo { 161bdcd8170SKalle Valo ar->cookie_list = NULL; 162bdcd8170SKalle Valo ar->cookie_count = 0; 163bdcd8170SKalle Valo } 164bdcd8170SKalle Valo 165bdcd8170SKalle Valo void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 166bdcd8170SKalle Valo { 167bdcd8170SKalle Valo /* Insert first */ 168bdcd8170SKalle Valo 169bdcd8170SKalle Valo if (!ar || !cookie) 170bdcd8170SKalle Valo return; 171bdcd8170SKalle Valo 172bdcd8170SKalle Valo cookie->arc_list_next = ar->cookie_list; 173bdcd8170SKalle Valo ar->cookie_list = cookie; 174bdcd8170SKalle Valo ar->cookie_count++; 175bdcd8170SKalle Valo } 176bdcd8170SKalle Valo 177bdcd8170SKalle Valo /* set the window address register (using 4-byte register access ). */ 178bdcd8170SKalle Valo static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 179bdcd8170SKalle Valo { 180bdcd8170SKalle Valo int status; 181bdcd8170SKalle Valo u8 addr_val[4]; 182bdcd8170SKalle Valo s32 i; 183bdcd8170SKalle Valo 184bdcd8170SKalle Valo /* 185bdcd8170SKalle Valo * Write bytes 1,2,3 of the register to set the upper address bytes, 186bdcd8170SKalle Valo * the LSB is written last to initiate the access cycle 187bdcd8170SKalle Valo */ 188bdcd8170SKalle Valo 189bdcd8170SKalle Valo for (i = 1; i <= 3; i++) { 190bdcd8170SKalle Valo /* 191bdcd8170SKalle Valo * Fill the buffer with the address byte value we want to 192bdcd8170SKalle Valo * hit 4 times. 193bdcd8170SKalle Valo */ 194bdcd8170SKalle Valo memset(addr_val, ((u8 *)&addr)[i], 4); 195bdcd8170SKalle Valo 196bdcd8170SKalle Valo /* 197bdcd8170SKalle Valo * Hit each byte of the register address with a 4-byte 198bdcd8170SKalle Valo * write operation to the same address, this is a harmless 199bdcd8170SKalle Valo * operation. 200bdcd8170SKalle Valo */ 201bdcd8170SKalle Valo status = hif_read_write_sync(ar, reg_addr + i, addr_val, 202bdcd8170SKalle Valo 4, HIF_WR_SYNC_BYTE_FIX); 203bdcd8170SKalle Valo if (status) 204bdcd8170SKalle Valo break; 205bdcd8170SKalle Valo } 206bdcd8170SKalle Valo 207bdcd8170SKalle Valo if (status) { 208bdcd8170SKalle Valo ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 209bdcd8170SKalle Valo addr, reg_addr); 210bdcd8170SKalle Valo return status; 211bdcd8170SKalle Valo } 212bdcd8170SKalle Valo 213bdcd8170SKalle Valo /* 214bdcd8170SKalle Valo * Write the address register again, this time write the whole 215bdcd8170SKalle Valo * 4-byte value. The effect here is that the LSB write causes the 216bdcd8170SKalle Valo * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 217bdcd8170SKalle Valo * effect since we are writing the same values again 218bdcd8170SKalle Valo */ 219bdcd8170SKalle Valo status = hif_read_write_sync(ar, reg_addr, (u8 *)(&addr), 220bdcd8170SKalle Valo 4, HIF_WR_SYNC_BYTE_INC); 221bdcd8170SKalle Valo 222bdcd8170SKalle Valo if (status) { 223bdcd8170SKalle Valo ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 224bdcd8170SKalle Valo addr, reg_addr); 225bdcd8170SKalle Valo return status; 226bdcd8170SKalle Valo } 227bdcd8170SKalle Valo 228bdcd8170SKalle Valo return 0; 229bdcd8170SKalle Valo } 230bdcd8170SKalle Valo 231bdcd8170SKalle Valo /* 232bdcd8170SKalle Valo * Read from the ATH6KL through its diagnostic window. No cooperation from 233bdcd8170SKalle Valo * the Target is required for this. 234bdcd8170SKalle Valo */ 235bdcd8170SKalle Valo int ath6kl_read_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 236bdcd8170SKalle Valo { 237bdcd8170SKalle Valo int status; 238bdcd8170SKalle Valo 239bdcd8170SKalle Valo /* set window register to start read cycle */ 240bdcd8170SKalle Valo status = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, 241bdcd8170SKalle Valo *address); 242bdcd8170SKalle Valo 243bdcd8170SKalle Valo if (status) 244bdcd8170SKalle Valo return status; 245bdcd8170SKalle Valo 246bdcd8170SKalle Valo /* read the data */ 247bdcd8170SKalle Valo status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 248bdcd8170SKalle Valo sizeof(u32), HIF_RD_SYNC_BYTE_INC); 249bdcd8170SKalle Valo if (status) { 250bdcd8170SKalle Valo ath6kl_err("failed to read from window data addr\n"); 251bdcd8170SKalle Valo return status; 252bdcd8170SKalle Valo } 253bdcd8170SKalle Valo 254bdcd8170SKalle Valo return status; 255bdcd8170SKalle Valo } 256bdcd8170SKalle Valo 257bdcd8170SKalle Valo 258bdcd8170SKalle Valo /* 259bdcd8170SKalle Valo * Write to the ATH6KL through its diagnostic window. No cooperation from 260bdcd8170SKalle Valo * the Target is required for this. 261bdcd8170SKalle Valo */ 262bdcd8170SKalle Valo static int ath6kl_write_reg_diag(struct ath6kl *ar, u32 *address, u32 *data) 263bdcd8170SKalle Valo { 264bdcd8170SKalle Valo int status; 265bdcd8170SKalle Valo 266bdcd8170SKalle Valo /* set write data */ 267bdcd8170SKalle Valo status = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *)data, 268bdcd8170SKalle Valo sizeof(u32), HIF_WR_SYNC_BYTE_INC); 269bdcd8170SKalle Valo if (status) { 270bdcd8170SKalle Valo ath6kl_err("failed to write 0x%x to window data addr\n", *data); 271bdcd8170SKalle Valo return status; 272bdcd8170SKalle Valo } 273bdcd8170SKalle Valo 274bdcd8170SKalle Valo /* set window register, which starts the write cycle */ 275bdcd8170SKalle Valo return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 276bdcd8170SKalle Valo *address); 277bdcd8170SKalle Valo } 278bdcd8170SKalle Valo 279bdcd8170SKalle Valo int ath6kl_access_datadiag(struct ath6kl *ar, u32 address, 280bdcd8170SKalle Valo u8 *data, u32 length, bool read) 281bdcd8170SKalle Valo { 282bdcd8170SKalle Valo u32 count; 283bdcd8170SKalle Valo int status = 0; 284bdcd8170SKalle Valo 285bdcd8170SKalle Valo for (count = 0; count < length; count += 4, address += 4) { 286bdcd8170SKalle Valo if (read) { 287bdcd8170SKalle Valo status = ath6kl_read_reg_diag(ar, &address, 288bdcd8170SKalle Valo (u32 *) &data[count]); 289bdcd8170SKalle Valo if (status) 290bdcd8170SKalle Valo break; 291bdcd8170SKalle Valo } else { 292bdcd8170SKalle Valo status = ath6kl_write_reg_diag(ar, &address, 293bdcd8170SKalle Valo (u32 *) &data[count]); 294bdcd8170SKalle Valo if (status) 295bdcd8170SKalle Valo break; 296bdcd8170SKalle Valo } 297bdcd8170SKalle Valo } 298bdcd8170SKalle Valo 299bdcd8170SKalle Valo return status; 300bdcd8170SKalle Valo } 301bdcd8170SKalle Valo 30231024d99SKevin Fang /* FIXME: move to a better place, target.h? */ 30331024d99SKevin Fang #define AR6003_RESET_CONTROL_ADDRESS 0x00004000 30431024d99SKevin Fang #define AR6004_RESET_CONTROL_ADDRESS 0x00004000 30531024d99SKevin Fang 306bdcd8170SKalle Valo static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 307bdcd8170SKalle Valo bool wait_fot_compltn, bool cold_reset) 308bdcd8170SKalle Valo { 309bdcd8170SKalle Valo int status = 0; 310bdcd8170SKalle Valo u32 address; 311bdcd8170SKalle Valo u32 data; 312bdcd8170SKalle Valo 31331024d99SKevin Fang if (target_type != TARGET_TYPE_AR6003 && 31431024d99SKevin Fang target_type != TARGET_TYPE_AR6004) 315bdcd8170SKalle Valo return; 316bdcd8170SKalle Valo 317bdcd8170SKalle Valo data = cold_reset ? RESET_CONTROL_COLD_RST : RESET_CONTROL_MBOX_RST; 318bdcd8170SKalle Valo 31931024d99SKevin Fang switch (target_type) { 32031024d99SKevin Fang case TARGET_TYPE_AR6003: 32131024d99SKevin Fang address = AR6003_RESET_CONTROL_ADDRESS; 32231024d99SKevin Fang break; 32331024d99SKevin Fang case TARGET_TYPE_AR6004: 32431024d99SKevin Fang address = AR6004_RESET_CONTROL_ADDRESS; 32531024d99SKevin Fang break; 32631024d99SKevin Fang default: 32731024d99SKevin Fang address = AR6003_RESET_CONTROL_ADDRESS; 32831024d99SKevin Fang break; 32931024d99SKevin Fang } 33031024d99SKevin Fang 331bdcd8170SKalle Valo status = ath6kl_write_reg_diag(ar, &address, &data); 332bdcd8170SKalle Valo 333bdcd8170SKalle Valo if (status) 334bdcd8170SKalle Valo ath6kl_err("failed to reset target\n"); 335bdcd8170SKalle Valo } 336bdcd8170SKalle Valo 337bdcd8170SKalle Valo void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 338bdcd8170SKalle Valo bool get_dbglogs) 339bdcd8170SKalle Valo { 340bdcd8170SKalle Valo struct ath6kl *ar = ath6kl_priv(dev); 341bdcd8170SKalle Valo static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 342bdcd8170SKalle Valo bool discon_issued; 343bdcd8170SKalle Valo 344bdcd8170SKalle Valo netif_stop_queue(dev); 345bdcd8170SKalle Valo 346bdcd8170SKalle Valo /* disable the target and the interrupts associated with it */ 347bdcd8170SKalle Valo if (test_bit(WMI_READY, &ar->flag)) { 348bdcd8170SKalle Valo discon_issued = (test_bit(CONNECTED, &ar->flag) || 349bdcd8170SKalle Valo test_bit(CONNECT_PEND, &ar->flag)); 350bdcd8170SKalle Valo ath6kl_disconnect(ar); 351bdcd8170SKalle Valo if (!keep_profile) 352bdcd8170SKalle Valo ath6kl_init_profile_info(ar); 353bdcd8170SKalle Valo 354bdcd8170SKalle Valo del_timer(&ar->disconnect_timer); 355bdcd8170SKalle Valo 356bdcd8170SKalle Valo clear_bit(WMI_READY, &ar->flag); 357bdcd8170SKalle Valo ath6kl_wmi_shutdown(ar->wmi); 358bdcd8170SKalle Valo clear_bit(WMI_ENABLED, &ar->flag); 359bdcd8170SKalle Valo ar->wmi = NULL; 360bdcd8170SKalle Valo 361bdcd8170SKalle Valo /* 362bdcd8170SKalle Valo * After wmi_shudown all WMI events will be dropped. We 363bdcd8170SKalle Valo * need to cleanup the buffers allocated in AP mode and 364bdcd8170SKalle Valo * give disconnect notification to stack, which usually 365bdcd8170SKalle Valo * happens in the disconnect_event. Simulate the disconnect 366bdcd8170SKalle Valo * event by calling the function directly. Sometimes 367bdcd8170SKalle Valo * disconnect_event will be received when the debug logs 368bdcd8170SKalle Valo * are collected. 369bdcd8170SKalle Valo */ 370bdcd8170SKalle Valo if (discon_issued) 371bdcd8170SKalle Valo ath6kl_disconnect_event(ar, DISCONNECT_CMD, 372bdcd8170SKalle Valo (ar->nw_type & AP_NETWORK) ? 373bdcd8170SKalle Valo bcast_mac : ar->bssid, 374bdcd8170SKalle Valo 0, NULL, 0); 375bdcd8170SKalle Valo 376bdcd8170SKalle Valo ar->user_key_ctrl = 0; 377bdcd8170SKalle Valo 378bdcd8170SKalle Valo } else { 379bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, 380bdcd8170SKalle Valo "%s: wmi is not ready 0x%p 0x%p\n", 381bdcd8170SKalle Valo __func__, ar, ar->wmi); 382bdcd8170SKalle Valo 383bdcd8170SKalle Valo /* Shut down WMI if we have started it */ 384bdcd8170SKalle Valo if (test_bit(WMI_ENABLED, &ar->flag)) { 385bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, 386bdcd8170SKalle Valo "%s: shut down wmi\n", __func__); 387bdcd8170SKalle Valo ath6kl_wmi_shutdown(ar->wmi); 388bdcd8170SKalle Valo clear_bit(WMI_ENABLED, &ar->flag); 389bdcd8170SKalle Valo ar->wmi = NULL; 390bdcd8170SKalle Valo } 391bdcd8170SKalle Valo } 392bdcd8170SKalle Valo 393bdcd8170SKalle Valo if (ar->htc_target) { 394bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 395ad226ec2SKalle Valo ath6kl_htc_stop(ar->htc_target); 396bdcd8170SKalle Valo } 397bdcd8170SKalle Valo 398bdcd8170SKalle Valo /* 399bdcd8170SKalle Valo * Try to reset the device if we can. The driver may have been 400bdcd8170SKalle Valo * configure NOT to reset the target during a debug session. 401bdcd8170SKalle Valo */ 402bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, 403bdcd8170SKalle Valo "attempting to reset target on instance destroy\n"); 404bdcd8170SKalle Valo ath6kl_reset_device(ar, ar->target_type, true, true); 405bdcd8170SKalle Valo } 406bdcd8170SKalle Valo 407bdcd8170SKalle Valo static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 408bdcd8170SKalle Valo { 409bdcd8170SKalle Valo u8 index; 410bdcd8170SKalle Valo u8 keyusage; 411bdcd8170SKalle Valo 412bdcd8170SKalle Valo for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 413bdcd8170SKalle Valo if (ar->wep_key_list[index].key_len) { 414bdcd8170SKalle Valo keyusage = GROUP_USAGE; 415bdcd8170SKalle Valo if (index == ar->def_txkey_index) 416bdcd8170SKalle Valo keyusage |= TX_USAGE; 417bdcd8170SKalle Valo 418bdcd8170SKalle Valo ath6kl_wmi_addkey_cmd(ar->wmi, 419bdcd8170SKalle Valo index, 420bdcd8170SKalle Valo WEP_CRYPT, 421bdcd8170SKalle Valo keyusage, 422bdcd8170SKalle Valo ar->wep_key_list[index].key_len, 423bdcd8170SKalle Valo NULL, 424bdcd8170SKalle Valo ar->wep_key_list[index].key, 425bdcd8170SKalle Valo KEY_OP_INIT_VAL, NULL, 426bdcd8170SKalle Valo NO_SYNC_WMIFLAG); 427bdcd8170SKalle Valo } 428bdcd8170SKalle Valo } 429bdcd8170SKalle Valo } 430bdcd8170SKalle Valo 431bdcd8170SKalle Valo static void ath6kl_connect_ap_mode(struct ath6kl *ar, u16 channel, u8 *bssid, 432bdcd8170SKalle Valo u16 listen_int, u16 beacon_int, 4333c774bbaSJouni Malinen u8 assoc_req_len, u8 *assoc_info) 434bdcd8170SKalle Valo { 435bdcd8170SKalle Valo struct net_device *dev = ar->net_dev; 4363c774bbaSJouni Malinen u8 *ies = NULL, *wpa_ie = NULL, *pos; 4373c774bbaSJouni Malinen size_t ies_len = 0; 438bdcd8170SKalle Valo struct station_info sinfo; 439bdcd8170SKalle Valo struct ath6kl_req_key *ik; 4409a5b1318SJouni Malinen int res; 4419a5b1318SJouni Malinen u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 442bdcd8170SKalle Valo 443bdcd8170SKalle Valo if (memcmp(dev->dev_addr, bssid, ETH_ALEN) == 0) { 444bdcd8170SKalle Valo ik = &ar->ap_mode_bkey; 445bdcd8170SKalle Valo 4469a5b1318SJouni Malinen ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", 4479a5b1318SJouni Malinen channel); 4489a5b1318SJouni Malinen 449bdcd8170SKalle Valo switch (ar->auth_mode) { 450bdcd8170SKalle Valo case NONE_AUTH: 451bdcd8170SKalle Valo if (ar->prwise_crypto == WEP_CRYPT) 452bdcd8170SKalle Valo ath6kl_install_static_wep_keys(ar); 453bdcd8170SKalle Valo break; 454bdcd8170SKalle Valo case WPA_PSK_AUTH: 455bdcd8170SKalle Valo case WPA2_PSK_AUTH: 456bdcd8170SKalle Valo case (WPA_PSK_AUTH|WPA2_PSK_AUTH): 4579a5b1318SJouni Malinen if (!ik->valid) 458bdcd8170SKalle Valo break; 4599a5b1318SJouni Malinen 4609a5b1318SJouni Malinen ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 4619a5b1318SJouni Malinen "the initial group key for AP mode\n"); 4629a5b1318SJouni Malinen memset(key_rsc, 0, sizeof(key_rsc)); 4639a5b1318SJouni Malinen res = ath6kl_wmi_addkey_cmd( 4649a5b1318SJouni Malinen ar->wmi, ik->key_index, ik->key_type, 4659a5b1318SJouni Malinen GROUP_USAGE, ik->key_len, key_rsc, ik->key, 4669a5b1318SJouni Malinen KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 4679a5b1318SJouni Malinen if (res) { 4689a5b1318SJouni Malinen ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 4699a5b1318SJouni Malinen "addkey failed: %d\n", res); 470bdcd8170SKalle Valo } 471bdcd8170SKalle Valo break; 472bdcd8170SKalle Valo } 4739a5b1318SJouni Malinen 4749a5b1318SJouni Malinen ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 475bdcd8170SKalle Valo set_bit(CONNECTED, &ar->flag); 4769a5b1318SJouni Malinen netif_carrier_on(ar->net_dev); 477bdcd8170SKalle Valo return; 478bdcd8170SKalle Valo } 479bdcd8170SKalle Valo 480bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", 481bdcd8170SKalle Valo bssid, channel); 482bdcd8170SKalle Valo 4833c774bbaSJouni Malinen if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 4843c774bbaSJouni Malinen struct ieee80211_mgmt *mgmt = 4853c774bbaSJouni Malinen (struct ieee80211_mgmt *) assoc_info; 4863c774bbaSJouni Malinen if (ieee80211_is_assoc_req(mgmt->frame_control) && 4873c774bbaSJouni Malinen assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 4883c774bbaSJouni Malinen sizeof(mgmt->u.assoc_req)) { 4893c774bbaSJouni Malinen ies = mgmt->u.assoc_req.variable; 4903c774bbaSJouni Malinen ies_len = assoc_info + assoc_req_len - ies; 4913c774bbaSJouni Malinen } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 4923c774bbaSJouni Malinen assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 4933c774bbaSJouni Malinen + sizeof(mgmt->u.reassoc_req)) { 4943c774bbaSJouni Malinen ies = mgmt->u.reassoc_req.variable; 4953c774bbaSJouni Malinen ies_len = assoc_info + assoc_req_len - ies; 4963c774bbaSJouni Malinen } 4973c774bbaSJouni Malinen } 4983c774bbaSJouni Malinen 4993c774bbaSJouni Malinen pos = ies; 5003c774bbaSJouni Malinen while (pos && pos + 1 < ies + ies_len) { 5013c774bbaSJouni Malinen if (pos + 2 + pos[1] > ies + ies_len) 5023c774bbaSJouni Malinen break; 5033c774bbaSJouni Malinen if (pos[0] == WLAN_EID_RSN) 5043c774bbaSJouni Malinen wpa_ie = pos; /* RSN IE */ 5053c774bbaSJouni Malinen else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 5063c774bbaSJouni Malinen pos[1] >= 4 && 5073c774bbaSJouni Malinen pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 5083c774bbaSJouni Malinen if (pos[5] == 0x01) 5093c774bbaSJouni Malinen wpa_ie = pos; /* WPA IE */ 5103c774bbaSJouni Malinen else if (pos[5] == 0x04) { 5113c774bbaSJouni Malinen wpa_ie = pos; /* WPS IE */ 5123c774bbaSJouni Malinen break; /* overrides WPA/RSN IE */ 5133c774bbaSJouni Malinen } 5143c774bbaSJouni Malinen } 5153c774bbaSJouni Malinen pos += 2 + pos[1]; 5163c774bbaSJouni Malinen } 5173c774bbaSJouni Malinen 5183c774bbaSJouni Malinen ath6kl_add_new_sta(ar, bssid, channel, wpa_ie, 5193c774bbaSJouni Malinen wpa_ie ? 2 + wpa_ie[1] : 0, 520bdcd8170SKalle Valo listen_int & 0xFF, beacon_int, 521bdcd8170SKalle Valo (listen_int >> 8) & 0xFF); 522bdcd8170SKalle Valo 523bdcd8170SKalle Valo /* send event to application */ 524bdcd8170SKalle Valo memset(&sinfo, 0, sizeof(sinfo)); 525bdcd8170SKalle Valo 526bdcd8170SKalle Valo /* TODO: sinfo.generation */ 5273c774bbaSJouni Malinen 5283c774bbaSJouni Malinen sinfo.assoc_req_ies = ies; 5293c774bbaSJouni Malinen sinfo.assoc_req_ies_len = ies_len; 5303c774bbaSJouni Malinen sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 5313c774bbaSJouni Malinen 532bdcd8170SKalle Valo cfg80211_new_sta(ar->net_dev, bssid, &sinfo, GFP_KERNEL); 533bdcd8170SKalle Valo 534bdcd8170SKalle Valo netif_wake_queue(ar->net_dev); 535bdcd8170SKalle Valo 536bdcd8170SKalle Valo return; 537bdcd8170SKalle Valo } 538bdcd8170SKalle Valo 539bdcd8170SKalle Valo /* Functions for Tx credit handling */ 540bdcd8170SKalle Valo void ath6k_credit_init(struct htc_credit_state_info *cred_info, 541bdcd8170SKalle Valo struct list_head *ep_list, 542bdcd8170SKalle Valo int tot_credits) 543bdcd8170SKalle Valo { 544bdcd8170SKalle Valo struct htc_endpoint_credit_dist *cur_ep_dist; 545bdcd8170SKalle Valo int count; 546bdcd8170SKalle Valo 547bdcd8170SKalle Valo cred_info->cur_free_credits = tot_credits; 548bdcd8170SKalle Valo cred_info->total_avail_credits = tot_credits; 549bdcd8170SKalle Valo 550bdcd8170SKalle Valo list_for_each_entry(cur_ep_dist, ep_list, list) { 551bdcd8170SKalle Valo if (cur_ep_dist->endpoint == ENDPOINT_0) 552bdcd8170SKalle Valo continue; 553bdcd8170SKalle Valo 554bdcd8170SKalle Valo cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 555bdcd8170SKalle Valo 556bdcd8170SKalle Valo if (tot_credits > 4) 557bdcd8170SKalle Valo if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 558bdcd8170SKalle Valo (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 559bdcd8170SKalle Valo ath6kl_deposit_credit_to_ep(cred_info, 560bdcd8170SKalle Valo cur_ep_dist, 561bdcd8170SKalle Valo cur_ep_dist->cred_min); 562bdcd8170SKalle Valo cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 563bdcd8170SKalle Valo } 564bdcd8170SKalle Valo 565bdcd8170SKalle Valo if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 566bdcd8170SKalle Valo ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 567bdcd8170SKalle Valo cur_ep_dist->cred_min); 568bdcd8170SKalle Valo /* 569bdcd8170SKalle Valo * Control service is always marked active, it 570bdcd8170SKalle Valo * never goes inactive EVER. 571bdcd8170SKalle Valo */ 572bdcd8170SKalle Valo cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 573bdcd8170SKalle Valo } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 574bdcd8170SKalle Valo /* this is the lowest priority data endpoint */ 575bdcd8170SKalle Valo cred_info->lowestpri_ep_dist = cur_ep_dist->list; 576bdcd8170SKalle Valo 577bdcd8170SKalle Valo /* 578bdcd8170SKalle Valo * Streams have to be created (explicit | implicit) for all 579bdcd8170SKalle Valo * kinds of traffic. BE endpoints are also inactive in the 580bdcd8170SKalle Valo * beginning. When BE traffic starts it creates implicit 581bdcd8170SKalle Valo * streams that redistributes credits. 582bdcd8170SKalle Valo * 583bdcd8170SKalle Valo * Note: all other endpoints have minimums set but are 584bdcd8170SKalle Valo * initially given NO credits. credits will be distributed 585bdcd8170SKalle Valo * as traffic activity demands 586bdcd8170SKalle Valo */ 587bdcd8170SKalle Valo } 588bdcd8170SKalle Valo 589bdcd8170SKalle Valo WARN_ON(cred_info->cur_free_credits <= 0); 590bdcd8170SKalle Valo 591bdcd8170SKalle Valo list_for_each_entry(cur_ep_dist, ep_list, list) { 592bdcd8170SKalle Valo if (cur_ep_dist->endpoint == ENDPOINT_0) 593bdcd8170SKalle Valo continue; 594bdcd8170SKalle Valo 595bdcd8170SKalle Valo if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 596bdcd8170SKalle Valo cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 597bdcd8170SKalle Valo else { 598bdcd8170SKalle Valo /* 599bdcd8170SKalle Valo * For the remaining data endpoints, we assume that 600bdcd8170SKalle Valo * each cred_per_msg are the same. We use a simple 601bdcd8170SKalle Valo * calculation here, we take the remaining credits 602bdcd8170SKalle Valo * and determine how many max messages this can 603bdcd8170SKalle Valo * cover and then set each endpoint's normal value 604bdcd8170SKalle Valo * equal to 3/4 this amount. 605bdcd8170SKalle Valo */ 606bdcd8170SKalle Valo count = (cred_info->cur_free_credits / 607bdcd8170SKalle Valo cur_ep_dist->cred_per_msg) 608bdcd8170SKalle Valo * cur_ep_dist->cred_per_msg; 609bdcd8170SKalle Valo count = (count * 3) >> 2; 610bdcd8170SKalle Valo count = max(count, cur_ep_dist->cred_per_msg); 611bdcd8170SKalle Valo cur_ep_dist->cred_norm = count; 612bdcd8170SKalle Valo 613bdcd8170SKalle Valo } 614bdcd8170SKalle Valo } 615bdcd8170SKalle Valo } 616bdcd8170SKalle Valo 617bdcd8170SKalle Valo /* initialize and setup credit distribution */ 618bdcd8170SKalle Valo int ath6k_setup_credit_dist(void *htc_handle, 619bdcd8170SKalle Valo struct htc_credit_state_info *cred_info) 620bdcd8170SKalle Valo { 621bdcd8170SKalle Valo u16 servicepriority[5]; 622bdcd8170SKalle Valo 623bdcd8170SKalle Valo memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 624bdcd8170SKalle Valo 625bdcd8170SKalle Valo servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 626bdcd8170SKalle Valo servicepriority[1] = WMI_DATA_VO_SVC; 627bdcd8170SKalle Valo servicepriority[2] = WMI_DATA_VI_SVC; 628bdcd8170SKalle Valo servicepriority[3] = WMI_DATA_BE_SVC; 629bdcd8170SKalle Valo servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 630bdcd8170SKalle Valo 631bdcd8170SKalle Valo /* set priority list */ 632ad226ec2SKalle Valo ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 633bdcd8170SKalle Valo 634bdcd8170SKalle Valo return 0; 635bdcd8170SKalle Valo } 636bdcd8170SKalle Valo 637bdcd8170SKalle Valo /* reduce an ep's credits back to a set limit */ 638bdcd8170SKalle Valo static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 639bdcd8170SKalle Valo struct htc_endpoint_credit_dist *ep_dist, 640bdcd8170SKalle Valo int limit) 641bdcd8170SKalle Valo { 642bdcd8170SKalle Valo int credits; 643bdcd8170SKalle Valo 644bdcd8170SKalle Valo ep_dist->cred_assngd = limit; 645bdcd8170SKalle Valo 646bdcd8170SKalle Valo if (ep_dist->credits <= limit) 647bdcd8170SKalle Valo return; 648bdcd8170SKalle Valo 649bdcd8170SKalle Valo credits = ep_dist->credits - limit; 650bdcd8170SKalle Valo ep_dist->credits -= credits; 651bdcd8170SKalle Valo cred_info->cur_free_credits += credits; 652bdcd8170SKalle Valo } 653bdcd8170SKalle Valo 654bdcd8170SKalle Valo static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 655bdcd8170SKalle Valo struct list_head *epdist_list) 656bdcd8170SKalle Valo { 657bdcd8170SKalle Valo struct htc_endpoint_credit_dist *cur_dist_list; 658bdcd8170SKalle Valo 659bdcd8170SKalle Valo list_for_each_entry(cur_dist_list, epdist_list, list) { 660bdcd8170SKalle Valo if (cur_dist_list->endpoint == ENDPOINT_0) 661bdcd8170SKalle Valo continue; 662bdcd8170SKalle Valo 663bdcd8170SKalle Valo if (cur_dist_list->cred_to_dist > 0) { 664bdcd8170SKalle Valo cur_dist_list->credits += 665bdcd8170SKalle Valo cur_dist_list->cred_to_dist; 666bdcd8170SKalle Valo cur_dist_list->cred_to_dist = 0; 667bdcd8170SKalle Valo if (cur_dist_list->credits > 668bdcd8170SKalle Valo cur_dist_list->cred_assngd) 669bdcd8170SKalle Valo ath6k_reduce_credits(cred_info, 670bdcd8170SKalle Valo cur_dist_list, 671bdcd8170SKalle Valo cur_dist_list->cred_assngd); 672bdcd8170SKalle Valo 673bdcd8170SKalle Valo if (cur_dist_list->credits > 674bdcd8170SKalle Valo cur_dist_list->cred_norm) 675bdcd8170SKalle Valo ath6k_reduce_credits(cred_info, cur_dist_list, 676bdcd8170SKalle Valo cur_dist_list->cred_norm); 677bdcd8170SKalle Valo 678bdcd8170SKalle Valo if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 679bdcd8170SKalle Valo if (cur_dist_list->txq_depth == 0) 680bdcd8170SKalle Valo ath6k_reduce_credits(cred_info, 681bdcd8170SKalle Valo cur_dist_list, 0); 682bdcd8170SKalle Valo } 683bdcd8170SKalle Valo } 684bdcd8170SKalle Valo } 685bdcd8170SKalle Valo } 686bdcd8170SKalle Valo 687bdcd8170SKalle Valo /* 688bdcd8170SKalle Valo * HTC has an endpoint that needs credits, ep_dist is the endpoint in 689bdcd8170SKalle Valo * question. 690bdcd8170SKalle Valo */ 691bdcd8170SKalle Valo void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 692bdcd8170SKalle Valo struct htc_endpoint_credit_dist *ep_dist) 693bdcd8170SKalle Valo { 694bdcd8170SKalle Valo struct htc_endpoint_credit_dist *curdist_list; 695bdcd8170SKalle Valo int credits = 0; 696bdcd8170SKalle Valo int need; 697bdcd8170SKalle Valo 698bdcd8170SKalle Valo if (ep_dist->svc_id == WMI_CONTROL_SVC) 699bdcd8170SKalle Valo goto out; 700bdcd8170SKalle Valo 701bdcd8170SKalle Valo if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 702bdcd8170SKalle Valo (ep_dist->svc_id == WMI_DATA_VO_SVC)) 703bdcd8170SKalle Valo if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 704bdcd8170SKalle Valo goto out; 705bdcd8170SKalle Valo 706bdcd8170SKalle Valo /* 707bdcd8170SKalle Valo * For all other services, we follow a simple algorithm of: 708bdcd8170SKalle Valo * 709bdcd8170SKalle Valo * 1. checking the free pool for credits 710bdcd8170SKalle Valo * 2. checking lower priority endpoints for credits to take 711bdcd8170SKalle Valo */ 712bdcd8170SKalle Valo 713bdcd8170SKalle Valo credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 714bdcd8170SKalle Valo 715bdcd8170SKalle Valo if (credits >= ep_dist->seek_cred) 716bdcd8170SKalle Valo goto out; 717bdcd8170SKalle Valo 718bdcd8170SKalle Valo /* 719bdcd8170SKalle Valo * We don't have enough in the free pool, try taking away from 720bdcd8170SKalle Valo * lower priority services The rule for taking away credits: 721bdcd8170SKalle Valo * 722bdcd8170SKalle Valo * 1. Only take from lower priority endpoints 723bdcd8170SKalle Valo * 2. Only take what is allocated above the minimum (never 724bdcd8170SKalle Valo * starve an endpoint completely) 725bdcd8170SKalle Valo * 3. Only take what you need. 726bdcd8170SKalle Valo */ 727bdcd8170SKalle Valo 728bdcd8170SKalle Valo list_for_each_entry_reverse(curdist_list, 729bdcd8170SKalle Valo &cred_info->lowestpri_ep_dist, 730bdcd8170SKalle Valo list) { 731bdcd8170SKalle Valo if (curdist_list == ep_dist) 732bdcd8170SKalle Valo break; 733bdcd8170SKalle Valo 734bdcd8170SKalle Valo need = ep_dist->seek_cred - cred_info->cur_free_credits; 735bdcd8170SKalle Valo 736bdcd8170SKalle Valo if ((curdist_list->cred_assngd - need) >= 737bdcd8170SKalle Valo curdist_list->cred_min) { 738bdcd8170SKalle Valo /* 739bdcd8170SKalle Valo * The current one has been allocated more than 740bdcd8170SKalle Valo * it's minimum and it has enough credits assigned 741bdcd8170SKalle Valo * above it's minimum to fulfill our need try to 742bdcd8170SKalle Valo * take away just enough to fulfill our need. 743bdcd8170SKalle Valo */ 744bdcd8170SKalle Valo ath6k_reduce_credits(cred_info, curdist_list, 745bdcd8170SKalle Valo curdist_list->cred_assngd - need); 746bdcd8170SKalle Valo 747bdcd8170SKalle Valo if (cred_info->cur_free_credits >= 748bdcd8170SKalle Valo ep_dist->seek_cred) 749bdcd8170SKalle Valo break; 750bdcd8170SKalle Valo } 751bdcd8170SKalle Valo 752bdcd8170SKalle Valo if (curdist_list->endpoint == ENDPOINT_0) 753bdcd8170SKalle Valo break; 754bdcd8170SKalle Valo } 755bdcd8170SKalle Valo 756bdcd8170SKalle Valo credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 757bdcd8170SKalle Valo 758bdcd8170SKalle Valo out: 759bdcd8170SKalle Valo /* did we find some credits? */ 760bdcd8170SKalle Valo if (credits) 761bdcd8170SKalle Valo ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 762bdcd8170SKalle Valo 763bdcd8170SKalle Valo ep_dist->seek_cred = 0; 764bdcd8170SKalle Valo } 765bdcd8170SKalle Valo 766bdcd8170SKalle Valo /* redistribute credits based on activity change */ 767bdcd8170SKalle Valo static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 768bdcd8170SKalle Valo struct list_head *ep_dist_list) 769bdcd8170SKalle Valo { 770bdcd8170SKalle Valo struct htc_endpoint_credit_dist *curdist_list; 771bdcd8170SKalle Valo 772bdcd8170SKalle Valo list_for_each_entry(curdist_list, ep_dist_list, list) { 773bdcd8170SKalle Valo if (curdist_list->endpoint == ENDPOINT_0) 774bdcd8170SKalle Valo continue; 775bdcd8170SKalle Valo 776bdcd8170SKalle Valo if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 777bdcd8170SKalle Valo (curdist_list->svc_id == WMI_DATA_BE_SVC)) 778bdcd8170SKalle Valo curdist_list->dist_flags |= HTC_EP_ACTIVE; 779bdcd8170SKalle Valo 780bdcd8170SKalle Valo if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 781bdcd8170SKalle Valo !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 782bdcd8170SKalle Valo if (curdist_list->txq_depth == 0) 783bdcd8170SKalle Valo ath6k_reduce_credits(info, 784bdcd8170SKalle Valo curdist_list, 0); 785bdcd8170SKalle Valo else 786bdcd8170SKalle Valo ath6k_reduce_credits(info, 787bdcd8170SKalle Valo curdist_list, 788bdcd8170SKalle Valo curdist_list->cred_min); 789bdcd8170SKalle Valo } 790bdcd8170SKalle Valo } 791bdcd8170SKalle Valo } 792bdcd8170SKalle Valo 793bdcd8170SKalle Valo /* 794bdcd8170SKalle Valo * 795bdcd8170SKalle Valo * This function is invoked whenever endpoints require credit 796bdcd8170SKalle Valo * distributions. A lock is held while this function is invoked, this 797bdcd8170SKalle Valo * function shall NOT block. The ep_dist_list is a list of distribution 798bdcd8170SKalle Valo * structures in prioritized order as defined by the call to the 799bdcd8170SKalle Valo * htc_set_credit_dist() api. 800bdcd8170SKalle Valo */ 801bdcd8170SKalle Valo void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 802bdcd8170SKalle Valo struct list_head *ep_dist_list, 803bdcd8170SKalle Valo enum htc_credit_dist_reason reason) 804bdcd8170SKalle Valo { 805bdcd8170SKalle Valo switch (reason) { 806bdcd8170SKalle Valo case HTC_CREDIT_DIST_SEND_COMPLETE: 807bdcd8170SKalle Valo ath6k_credit_update(cred_info, ep_dist_list); 808bdcd8170SKalle Valo break; 809bdcd8170SKalle Valo case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 810bdcd8170SKalle Valo ath6k_redistribute_credits(cred_info, ep_dist_list); 811bdcd8170SKalle Valo break; 812bdcd8170SKalle Valo default: 813bdcd8170SKalle Valo break; 814bdcd8170SKalle Valo } 815bdcd8170SKalle Valo 816bdcd8170SKalle Valo WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 817bdcd8170SKalle Valo WARN_ON(cred_info->cur_free_credits < 0); 818bdcd8170SKalle Valo } 819bdcd8170SKalle Valo 820bdcd8170SKalle Valo void disconnect_timer_handler(unsigned long ptr) 821bdcd8170SKalle Valo { 822bdcd8170SKalle Valo struct net_device *dev = (struct net_device *)ptr; 823bdcd8170SKalle Valo struct ath6kl *ar = ath6kl_priv(dev); 824bdcd8170SKalle Valo 825bdcd8170SKalle Valo ath6kl_init_profile_info(ar); 826bdcd8170SKalle Valo ath6kl_disconnect(ar); 827bdcd8170SKalle Valo } 828bdcd8170SKalle Valo 829bdcd8170SKalle Valo void ath6kl_disconnect(struct ath6kl *ar) 830bdcd8170SKalle Valo { 831bdcd8170SKalle Valo if (test_bit(CONNECTED, &ar->flag) || 832bdcd8170SKalle Valo test_bit(CONNECT_PEND, &ar->flag)) { 833bdcd8170SKalle Valo ath6kl_wmi_disconnect_cmd(ar->wmi); 834bdcd8170SKalle Valo /* 835bdcd8170SKalle Valo * Disconnect command is issued, clear the connect pending 836bdcd8170SKalle Valo * flag. The connected flag will be cleared in 837bdcd8170SKalle Valo * disconnect event notification. 838bdcd8170SKalle Valo */ 839bdcd8170SKalle Valo clear_bit(CONNECT_PEND, &ar->flag); 840bdcd8170SKalle Valo } 841bdcd8170SKalle Valo } 842bdcd8170SKalle Valo 843abcb344bSKalle Valo void ath6kl_deep_sleep_enable(struct ath6kl *ar) 844abcb344bSKalle Valo { 845abcb344bSKalle Valo switch (ar->sme_state) { 846abcb344bSKalle Valo case SME_CONNECTING: 847abcb344bSKalle Valo cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0, 848abcb344bSKalle Valo NULL, 0, 849abcb344bSKalle Valo WLAN_STATUS_UNSPECIFIED_FAILURE, 850abcb344bSKalle Valo GFP_KERNEL); 851abcb344bSKalle Valo break; 852abcb344bSKalle Valo case SME_CONNECTED: 853abcb344bSKalle Valo default: 854abcb344bSKalle Valo /* 855abcb344bSKalle Valo * FIXME: oddly enough smeState is in DISCONNECTED during 856abcb344bSKalle Valo * suspend, why? Need to send disconnected event in that 857abcb344bSKalle Valo * state. 858abcb344bSKalle Valo */ 859abcb344bSKalle Valo cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 860abcb344bSKalle Valo break; 861abcb344bSKalle Valo } 862abcb344bSKalle Valo 863abcb344bSKalle Valo if (test_bit(CONNECTED, &ar->flag) || 864abcb344bSKalle Valo test_bit(CONNECT_PEND, &ar->flag)) 865abcb344bSKalle Valo ath6kl_wmi_disconnect_cmd(ar->wmi); 866abcb344bSKalle Valo 867abcb344bSKalle Valo ar->sme_state = SME_DISCONNECTED; 868abcb344bSKalle Valo 869abcb344bSKalle Valo /* disable scanning */ 870abcb344bSKalle Valo if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 871abcb344bSKalle Valo 0, 0) != 0) 872abcb344bSKalle Valo printk(KERN_WARNING "ath6kl: failed to disable scan " 873abcb344bSKalle Valo "during suspend\n"); 874abcb344bSKalle Valo 875abcb344bSKalle Valo ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 876abcb344bSKalle Valo } 877abcb344bSKalle Valo 878bdcd8170SKalle Valo /* WMI Event handlers */ 879bdcd8170SKalle Valo 880bdcd8170SKalle Valo static const char *get_hw_id_string(u32 id) 881bdcd8170SKalle Valo { 882bdcd8170SKalle Valo switch (id) { 883bdcd8170SKalle Valo case AR6003_REV1_VERSION: 884bdcd8170SKalle Valo return "1.0"; 885bdcd8170SKalle Valo case AR6003_REV2_VERSION: 886bdcd8170SKalle Valo return "2.0"; 887bdcd8170SKalle Valo case AR6003_REV3_VERSION: 888bdcd8170SKalle Valo return "2.1.1"; 889bdcd8170SKalle Valo default: 890bdcd8170SKalle Valo return "unknown"; 891bdcd8170SKalle Valo } 892bdcd8170SKalle Valo } 893bdcd8170SKalle Valo 894bdcd8170SKalle Valo void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 895bdcd8170SKalle Valo { 896bdcd8170SKalle Valo struct ath6kl *ar = devt; 897bdcd8170SKalle Valo struct net_device *dev = ar->net_dev; 898bdcd8170SKalle Valo 899bdcd8170SKalle Valo memcpy(dev->dev_addr, datap, ETH_ALEN); 900bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 901bdcd8170SKalle Valo __func__, dev->dev_addr); 902bdcd8170SKalle Valo 903bdcd8170SKalle Valo ar->version.wlan_ver = sw_ver; 904bdcd8170SKalle Valo ar->version.abi_ver = abi_ver; 905bdcd8170SKalle Valo 906bdcd8170SKalle Valo snprintf(ar->wdev->wiphy->fw_version, 907bdcd8170SKalle Valo sizeof(ar->wdev->wiphy->fw_version), 908bdcd8170SKalle Valo "%u.%u.%u.%u", 909bdcd8170SKalle Valo (ar->version.wlan_ver & 0xf0000000) >> 28, 910bdcd8170SKalle Valo (ar->version.wlan_ver & 0x0f000000) >> 24, 911bdcd8170SKalle Valo (ar->version.wlan_ver & 0x00ff0000) >> 16, 912bdcd8170SKalle Valo (ar->version.wlan_ver & 0x0000ffff)); 913bdcd8170SKalle Valo 914bdcd8170SKalle Valo /* indicate to the waiting thread that the ready event was received */ 915bdcd8170SKalle Valo set_bit(WMI_READY, &ar->flag); 916bdcd8170SKalle Valo wake_up(&ar->event_wq); 917bdcd8170SKalle Valo 918bdcd8170SKalle Valo ath6kl_info("hw %s fw %s\n", 919bdcd8170SKalle Valo get_hw_id_string(ar->wdev->wiphy->hw_version), 920bdcd8170SKalle Valo ar->wdev->wiphy->fw_version); 921bdcd8170SKalle Valo } 922bdcd8170SKalle Valo 923bdcd8170SKalle Valo void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 924bdcd8170SKalle Valo { 925bdcd8170SKalle Valo ath6kl_cfg80211_scan_complete_event(ar, status); 926bdcd8170SKalle Valo 927bdcd8170SKalle Valo if (!ar->usr_bss_filter) 928bdcd8170SKalle Valo ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 929bdcd8170SKalle Valo 930bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 931bdcd8170SKalle Valo } 932bdcd8170SKalle Valo 933bdcd8170SKalle Valo void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 934bdcd8170SKalle Valo u16 listen_int, u16 beacon_int, 935bdcd8170SKalle Valo enum network_type net_type, u8 beacon_ie_len, 936bdcd8170SKalle Valo u8 assoc_req_len, u8 assoc_resp_len, 937bdcd8170SKalle Valo u8 *assoc_info) 938bdcd8170SKalle Valo { 939bdcd8170SKalle Valo unsigned long flags; 940bdcd8170SKalle Valo 941bdcd8170SKalle Valo if (ar->nw_type == AP_NETWORK) { 942bdcd8170SKalle Valo ath6kl_connect_ap_mode(ar, channel, bssid, listen_int, 9433c774bbaSJouni Malinen beacon_int, assoc_req_len, 9443c774bbaSJouni Malinen assoc_info + beacon_ie_len); 945bdcd8170SKalle Valo return; 946bdcd8170SKalle Valo } 947bdcd8170SKalle Valo 948bdcd8170SKalle Valo ath6kl_cfg80211_connect_event(ar, channel, bssid, 949bdcd8170SKalle Valo listen_int, beacon_int, 950bdcd8170SKalle Valo net_type, beacon_ie_len, 951bdcd8170SKalle Valo assoc_req_len, assoc_resp_len, 952bdcd8170SKalle Valo assoc_info); 953bdcd8170SKalle Valo 954bdcd8170SKalle Valo memcpy(ar->bssid, bssid, sizeof(ar->bssid)); 955bdcd8170SKalle Valo ar->bss_ch = channel; 956bdcd8170SKalle Valo 957bdcd8170SKalle Valo if ((ar->nw_type == INFRA_NETWORK)) 958bdcd8170SKalle Valo ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t, 959bdcd8170SKalle Valo ar->listen_intvl_b); 960bdcd8170SKalle Valo 961bdcd8170SKalle Valo netif_wake_queue(ar->net_dev); 962bdcd8170SKalle Valo 963bdcd8170SKalle Valo /* Update connect & link status atomically */ 964bdcd8170SKalle Valo spin_lock_irqsave(&ar->lock, flags); 965bdcd8170SKalle Valo set_bit(CONNECTED, &ar->flag); 966bdcd8170SKalle Valo clear_bit(CONNECT_PEND, &ar->flag); 967bdcd8170SKalle Valo netif_carrier_on(ar->net_dev); 968bdcd8170SKalle Valo spin_unlock_irqrestore(&ar->lock, flags); 969bdcd8170SKalle Valo 970bdcd8170SKalle Valo aggr_reset_state(ar->aggr_cntxt); 971bdcd8170SKalle Valo ar->reconnect_flag = 0; 972bdcd8170SKalle Valo 973bdcd8170SKalle Valo if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 974bdcd8170SKalle Valo memset(ar->node_map, 0, sizeof(ar->node_map)); 975bdcd8170SKalle Valo ar->node_num = 0; 976bdcd8170SKalle Valo ar->next_ep_id = ENDPOINT_2; 977bdcd8170SKalle Valo } 978bdcd8170SKalle Valo 979bdcd8170SKalle Valo if (!ar->usr_bss_filter) 980bdcd8170SKalle Valo ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 981bdcd8170SKalle Valo } 982bdcd8170SKalle Valo 983bdcd8170SKalle Valo void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 984bdcd8170SKalle Valo { 985bdcd8170SKalle Valo struct ath6kl_sta *sta; 986bdcd8170SKalle Valo u8 tsc[6]; 987bdcd8170SKalle Valo /* 988bdcd8170SKalle Valo * For AP case, keyid will have aid of STA which sent pkt with 989bdcd8170SKalle Valo * MIC error. Use this aid to get MAC & send it to hostapd. 990bdcd8170SKalle Valo */ 991bdcd8170SKalle Valo if (ar->nw_type == AP_NETWORK) { 992bdcd8170SKalle Valo sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 993bdcd8170SKalle Valo if (!sta) 994bdcd8170SKalle Valo return; 995bdcd8170SKalle Valo 996bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, 997bdcd8170SKalle Valo "ap tkip mic error received from aid=%d\n", keyid); 998bdcd8170SKalle Valo 999bdcd8170SKalle Valo memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1000bdcd8170SKalle Valo cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1001bdcd8170SKalle Valo NL80211_KEYTYPE_PAIRWISE, keyid, 1002bdcd8170SKalle Valo tsc, GFP_KERNEL); 1003bdcd8170SKalle Valo } else 1004bdcd8170SKalle Valo ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1005bdcd8170SKalle Valo 1006bdcd8170SKalle Valo } 1007bdcd8170SKalle Valo 1008bdcd8170SKalle Valo static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1009bdcd8170SKalle Valo { 1010bdcd8170SKalle Valo struct wmi_target_stats *tgt_stats = 1011bdcd8170SKalle Valo (struct wmi_target_stats *) ptr; 1012bdcd8170SKalle Valo struct target_stats *stats = &ar->target_stats; 1013bdcd8170SKalle Valo struct tkip_ccmp_stats *ccmp_stats; 1014bdcd8170SKalle Valo struct bss *conn_bss = NULL; 1015bdcd8170SKalle Valo struct cserv_stats *c_stats; 1016bdcd8170SKalle Valo u8 ac; 1017bdcd8170SKalle Valo 1018bdcd8170SKalle Valo if (len < sizeof(*tgt_stats)) 1019bdcd8170SKalle Valo return; 1020bdcd8170SKalle Valo 1021bdcd8170SKalle Valo /* update the RSSI of the connected bss */ 1022bdcd8170SKalle Valo if (test_bit(CONNECTED, &ar->flag)) { 1023bdcd8170SKalle Valo conn_bss = ath6kl_wmi_find_node(ar->wmi, ar->bssid); 1024bdcd8170SKalle Valo if (conn_bss) { 1025bdcd8170SKalle Valo c_stats = &tgt_stats->cserv_stats; 1026bdcd8170SKalle Valo conn_bss->ni_rssi = 1027bdcd8170SKalle Valo a_sle16_to_cpu(c_stats->cs_ave_beacon_rssi); 1028bdcd8170SKalle Valo conn_bss->ni_snr = 1029bdcd8170SKalle Valo tgt_stats->cserv_stats.cs_ave_beacon_snr; 1030bdcd8170SKalle Valo ath6kl_wmi_node_return(ar->wmi, conn_bss); 1031bdcd8170SKalle Valo } 1032bdcd8170SKalle Valo } 1033bdcd8170SKalle Valo 1034bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1035bdcd8170SKalle Valo 1036bdcd8170SKalle Valo stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1037bdcd8170SKalle Valo stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1038bdcd8170SKalle Valo stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1039bdcd8170SKalle Valo stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1040bdcd8170SKalle Valo stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1041bdcd8170SKalle Valo stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1042bdcd8170SKalle Valo stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1043bdcd8170SKalle Valo stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1044bdcd8170SKalle Valo stats->tx_rts_success_cnt += 1045bdcd8170SKalle Valo le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1046bdcd8170SKalle Valo 1047bdcd8170SKalle Valo for (ac = 0; ac < WMM_NUM_AC; ac++) 1048bdcd8170SKalle Valo stats->tx_pkt_per_ac[ac] += 1049bdcd8170SKalle Valo le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1050bdcd8170SKalle Valo 1051bdcd8170SKalle Valo stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1052bdcd8170SKalle Valo stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1053bdcd8170SKalle Valo stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1054bdcd8170SKalle Valo stats->tx_mult_retry_cnt += 1055bdcd8170SKalle Valo le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1056bdcd8170SKalle Valo stats->tx_rts_fail_cnt += 1057bdcd8170SKalle Valo le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1058bdcd8170SKalle Valo stats->tx_ucast_rate = 1059bdcd8170SKalle Valo ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1060bdcd8170SKalle Valo 1061bdcd8170SKalle Valo stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1062bdcd8170SKalle Valo stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1063bdcd8170SKalle Valo stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1064bdcd8170SKalle Valo stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1065bdcd8170SKalle Valo stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1066bdcd8170SKalle Valo stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1067bdcd8170SKalle Valo stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1068bdcd8170SKalle Valo stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1069bdcd8170SKalle Valo stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1070bdcd8170SKalle Valo stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1071bdcd8170SKalle Valo stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1072bdcd8170SKalle Valo stats->rx_key_cache_miss += 1073bdcd8170SKalle Valo le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1074bdcd8170SKalle Valo stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1075bdcd8170SKalle Valo stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1076bdcd8170SKalle Valo stats->rx_ucast_rate = 1077bdcd8170SKalle Valo ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1078bdcd8170SKalle Valo 1079bdcd8170SKalle Valo ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1080bdcd8170SKalle Valo 1081bdcd8170SKalle Valo stats->tkip_local_mic_fail += 1082bdcd8170SKalle Valo le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1083bdcd8170SKalle Valo stats->tkip_cnter_measures_invoked += 1084bdcd8170SKalle Valo le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1085bdcd8170SKalle Valo stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1086bdcd8170SKalle Valo 1087bdcd8170SKalle Valo stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1088bdcd8170SKalle Valo stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1089bdcd8170SKalle Valo 1090bdcd8170SKalle Valo stats->pwr_save_fail_cnt += 1091bdcd8170SKalle Valo le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1092bdcd8170SKalle Valo stats->noise_floor_calib = 1093bdcd8170SKalle Valo a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1094bdcd8170SKalle Valo 1095bdcd8170SKalle Valo stats->cs_bmiss_cnt += 1096bdcd8170SKalle Valo le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1097bdcd8170SKalle Valo stats->cs_low_rssi_cnt += 1098bdcd8170SKalle Valo le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1099bdcd8170SKalle Valo stats->cs_connect_cnt += 1100bdcd8170SKalle Valo le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1101bdcd8170SKalle Valo stats->cs_discon_cnt += 1102bdcd8170SKalle Valo le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1103bdcd8170SKalle Valo 1104bdcd8170SKalle Valo stats->cs_ave_beacon_rssi = 1105bdcd8170SKalle Valo a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1106bdcd8170SKalle Valo 1107bdcd8170SKalle Valo stats->cs_last_roam_msec = 1108bdcd8170SKalle Valo tgt_stats->cserv_stats.cs_last_roam_msec; 1109bdcd8170SKalle Valo stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1110bdcd8170SKalle Valo stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1111bdcd8170SKalle Valo 1112bdcd8170SKalle Valo stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1113bdcd8170SKalle Valo 1114bdcd8170SKalle Valo stats->wow_pkt_dropped += 1115bdcd8170SKalle Valo le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1116bdcd8170SKalle Valo stats->wow_host_pkt_wakeups += 1117bdcd8170SKalle Valo tgt_stats->wow_stats.wow_host_pkt_wakeups; 1118bdcd8170SKalle Valo stats->wow_host_evt_wakeups += 1119bdcd8170SKalle Valo tgt_stats->wow_stats.wow_host_evt_wakeups; 1120bdcd8170SKalle Valo stats->wow_evt_discarded += 1121bdcd8170SKalle Valo le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1122bdcd8170SKalle Valo 1123bdcd8170SKalle Valo if (test_bit(STATS_UPDATE_PEND, &ar->flag)) { 1124bdcd8170SKalle Valo clear_bit(STATS_UPDATE_PEND, &ar->flag); 1125bdcd8170SKalle Valo wake_up(&ar->event_wq); 1126bdcd8170SKalle Valo } 1127bdcd8170SKalle Valo } 1128bdcd8170SKalle Valo 1129bdcd8170SKalle Valo static void ath6kl_add_le32(__le32 *var, __le32 val) 1130bdcd8170SKalle Valo { 1131bdcd8170SKalle Valo *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1132bdcd8170SKalle Valo } 1133bdcd8170SKalle Valo 1134bdcd8170SKalle Valo void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1135bdcd8170SKalle Valo { 1136bdcd8170SKalle Valo struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1137bdcd8170SKalle Valo struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1138bdcd8170SKalle Valo struct wmi_per_sta_stat *st_ap, *st_p; 1139bdcd8170SKalle Valo u8 ac; 1140bdcd8170SKalle Valo 1141bdcd8170SKalle Valo if (ar->nw_type == AP_NETWORK) { 1142bdcd8170SKalle Valo if (len < sizeof(*p)) 1143bdcd8170SKalle Valo return; 1144bdcd8170SKalle Valo 1145bdcd8170SKalle Valo for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1146bdcd8170SKalle Valo st_ap = &ap->sta[ac]; 1147bdcd8170SKalle Valo st_p = &p->sta[ac]; 1148bdcd8170SKalle Valo 1149bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1150bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1151bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1152bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1153bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1154bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1155bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1156bdcd8170SKalle Valo ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1157bdcd8170SKalle Valo } 1158bdcd8170SKalle Valo 1159bdcd8170SKalle Valo } else { 1160bdcd8170SKalle Valo ath6kl_update_target_stats(ar, ptr, len); 1161bdcd8170SKalle Valo } 1162bdcd8170SKalle Valo } 1163bdcd8170SKalle Valo 1164bdcd8170SKalle Valo void ath6kl_wakeup_event(void *dev) 1165bdcd8170SKalle Valo { 1166bdcd8170SKalle Valo struct ath6kl *ar = (struct ath6kl *) dev; 1167bdcd8170SKalle Valo 1168bdcd8170SKalle Valo wake_up(&ar->event_wq); 1169bdcd8170SKalle Valo } 1170bdcd8170SKalle Valo 1171bdcd8170SKalle Valo void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1172bdcd8170SKalle Valo { 1173bdcd8170SKalle Valo struct ath6kl *ar = (struct ath6kl *) devt; 1174bdcd8170SKalle Valo 1175bdcd8170SKalle Valo ar->tx_pwr = tx_pwr; 1176bdcd8170SKalle Valo wake_up(&ar->event_wq); 1177bdcd8170SKalle Valo } 1178bdcd8170SKalle Valo 1179bdcd8170SKalle Valo void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1180bdcd8170SKalle Valo { 1181bdcd8170SKalle Valo struct ath6kl_sta *conn; 1182bdcd8170SKalle Valo struct sk_buff *skb; 1183bdcd8170SKalle Valo bool psq_empty = false; 1184bdcd8170SKalle Valo 1185bdcd8170SKalle Valo conn = ath6kl_find_sta_by_aid(ar, aid); 1186bdcd8170SKalle Valo 1187bdcd8170SKalle Valo if (!conn) 1188bdcd8170SKalle Valo return; 1189bdcd8170SKalle Valo /* 1190bdcd8170SKalle Valo * Send out a packet queued on ps queue. When the ps queue 1191bdcd8170SKalle Valo * becomes empty update the PVB for this station. 1192bdcd8170SKalle Valo */ 1193bdcd8170SKalle Valo spin_lock_bh(&conn->psq_lock); 1194bdcd8170SKalle Valo psq_empty = skb_queue_empty(&conn->psq); 1195bdcd8170SKalle Valo spin_unlock_bh(&conn->psq_lock); 1196bdcd8170SKalle Valo 1197bdcd8170SKalle Valo if (psq_empty) 1198bdcd8170SKalle Valo /* TODO: Send out a NULL data frame */ 1199bdcd8170SKalle Valo return; 1200bdcd8170SKalle Valo 1201bdcd8170SKalle Valo spin_lock_bh(&conn->psq_lock); 1202bdcd8170SKalle Valo skb = skb_dequeue(&conn->psq); 1203bdcd8170SKalle Valo spin_unlock_bh(&conn->psq_lock); 1204bdcd8170SKalle Valo 1205bdcd8170SKalle Valo conn->sta_flags |= STA_PS_POLLED; 1206bdcd8170SKalle Valo ath6kl_data_tx(skb, ar->net_dev); 1207bdcd8170SKalle Valo conn->sta_flags &= ~STA_PS_POLLED; 1208bdcd8170SKalle Valo 1209bdcd8170SKalle Valo spin_lock_bh(&conn->psq_lock); 1210bdcd8170SKalle Valo psq_empty = skb_queue_empty(&conn->psq); 1211bdcd8170SKalle Valo spin_unlock_bh(&conn->psq_lock); 1212bdcd8170SKalle Valo 1213bdcd8170SKalle Valo if (psq_empty) 1214bdcd8170SKalle Valo ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0); 1215bdcd8170SKalle Valo } 1216bdcd8170SKalle Valo 1217bdcd8170SKalle Valo void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1218bdcd8170SKalle Valo { 1219bdcd8170SKalle Valo bool mcastq_empty = false; 1220bdcd8170SKalle Valo struct sk_buff *skb; 1221bdcd8170SKalle Valo 1222bdcd8170SKalle Valo /* 1223bdcd8170SKalle Valo * If there are no associated STAs, ignore the DTIM expiry event. 1224bdcd8170SKalle Valo * There can be potential race conditions where the last associated 1225bdcd8170SKalle Valo * STA may disconnect & before the host could clear the 'Indicate 1226bdcd8170SKalle Valo * DTIM' request to the firmware, the firmware would have just 1227bdcd8170SKalle Valo * indicated a DTIM expiry event. The race is between 'clear DTIM 1228bdcd8170SKalle Valo * expiry cmd' going from the host to the firmware & the DTIM 1229bdcd8170SKalle Valo * expiry event happening from the firmware to the host. 1230bdcd8170SKalle Valo */ 1231bdcd8170SKalle Valo if (!ar->sta_list_index) 1232bdcd8170SKalle Valo return; 1233bdcd8170SKalle Valo 1234bdcd8170SKalle Valo spin_lock_bh(&ar->mcastpsq_lock); 1235bdcd8170SKalle Valo mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1236bdcd8170SKalle Valo spin_unlock_bh(&ar->mcastpsq_lock); 1237bdcd8170SKalle Valo 1238bdcd8170SKalle Valo if (mcastq_empty) 1239bdcd8170SKalle Valo return; 1240bdcd8170SKalle Valo 1241bdcd8170SKalle Valo /* set the STA flag to dtim_expired for the frame to go out */ 1242bdcd8170SKalle Valo set_bit(DTIM_EXPIRED, &ar->flag); 1243bdcd8170SKalle Valo 1244bdcd8170SKalle Valo spin_lock_bh(&ar->mcastpsq_lock); 1245bdcd8170SKalle Valo while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1246bdcd8170SKalle Valo spin_unlock_bh(&ar->mcastpsq_lock); 1247bdcd8170SKalle Valo 1248bdcd8170SKalle Valo ath6kl_data_tx(skb, ar->net_dev); 1249bdcd8170SKalle Valo 1250bdcd8170SKalle Valo spin_lock_bh(&ar->mcastpsq_lock); 1251bdcd8170SKalle Valo } 1252bdcd8170SKalle Valo spin_unlock_bh(&ar->mcastpsq_lock); 1253bdcd8170SKalle Valo 1254bdcd8170SKalle Valo clear_bit(DTIM_EXPIRED, &ar->flag); 1255bdcd8170SKalle Valo 1256bdcd8170SKalle Valo /* clear the LSB of the BitMapCtl field of the TIM IE */ 1257bdcd8170SKalle Valo ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1258bdcd8170SKalle Valo } 1259bdcd8170SKalle Valo 1260bdcd8170SKalle Valo void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1261bdcd8170SKalle Valo u8 assoc_resp_len, u8 *assoc_info, 1262bdcd8170SKalle Valo u16 prot_reason_status) 1263bdcd8170SKalle Valo { 1264bdcd8170SKalle Valo struct bss *wmi_ssid_node = NULL; 1265bdcd8170SKalle Valo unsigned long flags; 1266bdcd8170SKalle Valo 1267bdcd8170SKalle Valo if (ar->nw_type == AP_NETWORK) { 1268bdcd8170SKalle Valo if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1269bdcd8170SKalle Valo return; 1270bdcd8170SKalle Valo 1271bdcd8170SKalle Valo /* if no more associated STAs, empty the mcast PS q */ 1272bdcd8170SKalle Valo if (ar->sta_list_index == 0) { 1273bdcd8170SKalle Valo spin_lock_bh(&ar->mcastpsq_lock); 1274bdcd8170SKalle Valo skb_queue_purge(&ar->mcastpsq); 1275bdcd8170SKalle Valo spin_unlock_bh(&ar->mcastpsq_lock); 1276bdcd8170SKalle Valo 1277bdcd8170SKalle Valo /* clear the LSB of the TIM IE's BitMapCtl field */ 1278bdcd8170SKalle Valo if (test_bit(WMI_READY, &ar->flag)) 1279bdcd8170SKalle Valo ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0); 1280bdcd8170SKalle Valo } 1281bdcd8170SKalle Valo 1282bdcd8170SKalle Valo if (!is_broadcast_ether_addr(bssid)) { 1283bdcd8170SKalle Valo /* send event to application */ 1284bdcd8170SKalle Valo cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1285bdcd8170SKalle Valo } 1286bdcd8170SKalle Valo 1287bdcd8170SKalle Valo clear_bit(CONNECTED, &ar->flag); 1288bdcd8170SKalle Valo return; 1289bdcd8170SKalle Valo } 1290bdcd8170SKalle Valo 1291bdcd8170SKalle Valo ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1292bdcd8170SKalle Valo assoc_resp_len, assoc_info, 1293bdcd8170SKalle Valo prot_reason_status); 1294bdcd8170SKalle Valo 1295bdcd8170SKalle Valo aggr_reset_state(ar->aggr_cntxt); 1296bdcd8170SKalle Valo 1297bdcd8170SKalle Valo del_timer(&ar->disconnect_timer); 1298bdcd8170SKalle Valo 1299bdcd8170SKalle Valo ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1300bdcd8170SKalle Valo "disconnect reason is %d\n", reason); 1301bdcd8170SKalle Valo 1302bdcd8170SKalle Valo /* 1303bdcd8170SKalle Valo * If the event is due to disconnect cmd from the host, only they 1304bdcd8170SKalle Valo * the target would stop trying to connect. Under any other 1305bdcd8170SKalle Valo * condition, target would keep trying to connect. 1306bdcd8170SKalle Valo */ 1307bdcd8170SKalle Valo if (reason == DISCONNECT_CMD) { 1308bdcd8170SKalle Valo if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1309bdcd8170SKalle Valo ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1310bdcd8170SKalle Valo } else { 1311bdcd8170SKalle Valo set_bit(CONNECT_PEND, &ar->flag); 1312bdcd8170SKalle Valo if (((reason == ASSOC_FAILED) && 1313bdcd8170SKalle Valo (prot_reason_status == 0x11)) || 1314bdcd8170SKalle Valo ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1315bdcd8170SKalle Valo && (ar->reconnect_flag == 1))) { 1316bdcd8170SKalle Valo set_bit(CONNECTED, &ar->flag); 1317bdcd8170SKalle Valo return; 1318bdcd8170SKalle Valo } 1319bdcd8170SKalle Valo } 1320bdcd8170SKalle Valo 1321bdcd8170SKalle Valo if ((reason == NO_NETWORK_AVAIL) && test_bit(WMI_READY, &ar->flag)) { 1322bdcd8170SKalle Valo ath6kl_wmi_node_free(ar->wmi, bssid); 1323bdcd8170SKalle Valo 1324bdcd8170SKalle Valo /* 1325bdcd8170SKalle Valo * In case any other same SSID nodes are present remove it, 1326bdcd8170SKalle Valo * since those nodes also not available now. 1327bdcd8170SKalle Valo */ 1328bdcd8170SKalle Valo do { 1329bdcd8170SKalle Valo /* 1330bdcd8170SKalle Valo * Find the nodes based on SSID and remove it 1331bdcd8170SKalle Valo * 1332bdcd8170SKalle Valo * Note: This case will not work out for 1333bdcd8170SKalle Valo * Hidden-SSID 1334bdcd8170SKalle Valo */ 1335bdcd8170SKalle Valo wmi_ssid_node = ath6kl_wmi_find_ssid_node(ar->wmi, 1336bdcd8170SKalle Valo ar->ssid, 1337bdcd8170SKalle Valo ar->ssid_len, 1338bdcd8170SKalle Valo false, 1339bdcd8170SKalle Valo true); 1340bdcd8170SKalle Valo 1341bdcd8170SKalle Valo if (wmi_ssid_node) 1342bdcd8170SKalle Valo ath6kl_wmi_node_free(ar->wmi, 1343bdcd8170SKalle Valo wmi_ssid_node->ni_macaddr); 1344bdcd8170SKalle Valo 1345bdcd8170SKalle Valo } while (wmi_ssid_node); 1346bdcd8170SKalle Valo } 1347bdcd8170SKalle Valo 1348bdcd8170SKalle Valo /* update connect & link status atomically */ 1349bdcd8170SKalle Valo spin_lock_irqsave(&ar->lock, flags); 1350bdcd8170SKalle Valo clear_bit(CONNECTED, &ar->flag); 1351bdcd8170SKalle Valo netif_carrier_off(ar->net_dev); 1352bdcd8170SKalle Valo spin_unlock_irqrestore(&ar->lock, flags); 1353bdcd8170SKalle Valo 1354bdcd8170SKalle Valo if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1)) 1355bdcd8170SKalle Valo ar->reconnect_flag = 0; 1356bdcd8170SKalle Valo 1357bdcd8170SKalle Valo if (reason != CSERV_DISCONNECT) 1358bdcd8170SKalle Valo ar->user_key_ctrl = 0; 1359bdcd8170SKalle Valo 1360bdcd8170SKalle Valo netif_stop_queue(ar->net_dev); 1361bdcd8170SKalle Valo memset(ar->bssid, 0, sizeof(ar->bssid)); 1362bdcd8170SKalle Valo ar->bss_ch = 0; 1363bdcd8170SKalle Valo 1364bdcd8170SKalle Valo ath6kl_tx_data_cleanup(ar); 1365bdcd8170SKalle Valo } 1366bdcd8170SKalle Valo 1367bdcd8170SKalle Valo static int ath6kl_open(struct net_device *dev) 1368bdcd8170SKalle Valo { 1369bdcd8170SKalle Valo struct ath6kl *ar = ath6kl_priv(dev); 1370bdcd8170SKalle Valo unsigned long flags; 1371bdcd8170SKalle Valo 1372bdcd8170SKalle Valo spin_lock_irqsave(&ar->lock, flags); 1373bdcd8170SKalle Valo 1374575b5f34SRaja Mani set_bit(WLAN_ENABLED, &ar->flag); 1375bdcd8170SKalle Valo 1376bdcd8170SKalle Valo if (test_bit(CONNECTED, &ar->flag)) { 1377bdcd8170SKalle Valo netif_carrier_on(dev); 1378bdcd8170SKalle Valo netif_wake_queue(dev); 1379bdcd8170SKalle Valo } else 1380bdcd8170SKalle Valo netif_carrier_off(dev); 1381bdcd8170SKalle Valo 1382bdcd8170SKalle Valo spin_unlock_irqrestore(&ar->lock, flags); 1383bdcd8170SKalle Valo 1384bdcd8170SKalle Valo return 0; 1385bdcd8170SKalle Valo } 1386bdcd8170SKalle Valo 1387bdcd8170SKalle Valo static int ath6kl_close(struct net_device *dev) 1388bdcd8170SKalle Valo { 1389bdcd8170SKalle Valo struct ath6kl *ar = ath6kl_priv(dev); 1390bdcd8170SKalle Valo 1391bdcd8170SKalle Valo netif_stop_queue(dev); 1392bdcd8170SKalle Valo 1393bdcd8170SKalle Valo ath6kl_disconnect(ar); 1394bdcd8170SKalle Valo 1395bdcd8170SKalle Valo if (test_bit(WMI_READY, &ar->flag)) { 1396bdcd8170SKalle Valo if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 1397bdcd8170SKalle Valo 0, 0, 0)) 1398bdcd8170SKalle Valo return -EIO; 1399bdcd8170SKalle Valo 1400575b5f34SRaja Mani clear_bit(WLAN_ENABLED, &ar->flag); 1401bdcd8170SKalle Valo } 1402bdcd8170SKalle Valo 1403bdcd8170SKalle Valo ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1404bdcd8170SKalle Valo 1405bdcd8170SKalle Valo return 0; 1406bdcd8170SKalle Valo } 1407bdcd8170SKalle Valo 1408bdcd8170SKalle Valo static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1409bdcd8170SKalle Valo { 1410bdcd8170SKalle Valo struct ath6kl *ar = ath6kl_priv(dev); 1411bdcd8170SKalle Valo 1412bdcd8170SKalle Valo return &ar->net_stats; 1413bdcd8170SKalle Valo } 1414bdcd8170SKalle Valo 1415bdcd8170SKalle Valo static struct net_device_ops ath6kl_netdev_ops = { 1416bdcd8170SKalle Valo .ndo_open = ath6kl_open, 1417bdcd8170SKalle Valo .ndo_stop = ath6kl_close, 1418bdcd8170SKalle Valo .ndo_start_xmit = ath6kl_data_tx, 1419bdcd8170SKalle Valo .ndo_get_stats = ath6kl_get_stats, 1420bdcd8170SKalle Valo }; 1421bdcd8170SKalle Valo 1422bdcd8170SKalle Valo void init_netdev(struct net_device *dev) 1423bdcd8170SKalle Valo { 1424bdcd8170SKalle Valo dev->netdev_ops = &ath6kl_netdev_ops; 1425bdcd8170SKalle Valo dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1426bdcd8170SKalle Valo 1427bdcd8170SKalle Valo dev->needed_headroom = ETH_HLEN; 1428bdcd8170SKalle Valo dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1429bdcd8170SKalle Valo sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 14301df94a85SVasanthakumar Thiagarajan + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1431bdcd8170SKalle Valo 1432bdcd8170SKalle Valo return; 1433bdcd8170SKalle Valo } 1434