1 /* 2 * Atheros CARL9170 driver 3 * 4 * Driver specific definitions 5 * 6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; see the file COPYING. If not, see 21 * http://www.gnu.org/licenses/. 22 * 23 * This file incorporates work covered by the following copyright and 24 * permission notice: 25 * Copyright (c) 2007-2008 Atheros Communications, Inc. 26 * 27 * Permission to use, copy, modify, and/or distribute this software for any 28 * purpose with or without fee is hereby granted, provided that the above 29 * copyright notice and this permission notice appear in all copies. 30 * 31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 38 */ 39 #ifndef __CARL9170_H 40 #define __CARL9170_H 41 42 #include <linux/kernel.h> 43 #include <linux/firmware.h> 44 #include <linux/completion.h> 45 #include <linux/spinlock.h> 46 #include <linux/hw_random.h> 47 #include <net/cfg80211.h> 48 #include <net/mac80211.h> 49 #include <linux/usb.h> 50 #ifdef CONFIG_CARL9170_LEDS 51 #include <linux/leds.h> 52 #endif /* CONFIG_CARL9170_LEDS */ 53 #ifdef CONFIG_CARL9170_WPC 54 #include <linux/input.h> 55 #endif /* CONFIG_CARL9170_WPC */ 56 #include "eeprom.h" 57 #include "wlan.h" 58 #include "hw.h" 59 #include "fwdesc.h" 60 #include "fwcmd.h" 61 #include "../regd.h" 62 63 #ifdef CONFIG_CARL9170_DEBUGFS 64 #include "debug.h" 65 #endif /* CONFIG_CARL9170_DEBUGFS */ 66 67 #define CARL9170FW_NAME "carl9170-1.fw" 68 69 #define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1) 70 71 static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 }; 72 73 #define CARL9170_MAX_RX_BUFFER_SIZE 8192 74 75 enum carl9170_device_state { 76 CARL9170_UNKNOWN_STATE, 77 CARL9170_STOPPED, 78 CARL9170_IDLE, 79 CARL9170_STARTED, 80 }; 81 82 #define WME_BA_BMP_SIZE 64 83 #define CARL9170_TX_USER_RATE_TRIES 3 84 85 #define TID_TO_WME_AC(_tid) \ 86 ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \ 87 (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \ 88 (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \ 89 IEEE80211_AC_VO) 90 91 #define SEQ_DIFF(_start, _seq) \ 92 (((_start) - (_seq)) & 0x0fff) 93 #define SEQ_PREV(_seq) \ 94 (((_seq) - 1) & 0x0fff) 95 #define SEQ_NEXT(_seq) \ 96 (((_seq) + 1) & 0x0fff) 97 #define BAW_WITHIN(_start, _bawsz, _seqno) \ 98 ((((_seqno) - (_start)) & 0xfff) < (_bawsz)) 99 100 enum carl9170_tid_state { 101 CARL9170_TID_STATE_INVALID, 102 CARL9170_TID_STATE_KILLED, 103 CARL9170_TID_STATE_SHUTDOWN, 104 CARL9170_TID_STATE_SUSPEND, 105 CARL9170_TID_STATE_PROGRESS, 106 CARL9170_TID_STATE_IDLE, 107 CARL9170_TID_STATE_XMIT, 108 }; 109 110 #define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE) 111 #define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS)) 112 #define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE)) 113 114 struct carl9170_sta_tid { 115 /* must be the first entry! */ 116 struct list_head list; 117 118 /* temporary list for RCU unlink procedure */ 119 struct list_head tmp_list; 120 121 /* lock for the following data structures */ 122 spinlock_t lock; 123 124 unsigned int counter; 125 enum carl9170_tid_state state; 126 u8 tid; /* TID number ( 0 - 15 ) */ 127 u16 max; /* max. AMPDU size */ 128 129 u16 snx; /* awaiting _next_ frame */ 130 u16 hsn; /* highest _queued_ sequence */ 131 u16 bsn; /* base of the tx/agg bitmap */ 132 unsigned long bitmap[CARL9170_BAW_SIZE]; 133 134 /* Preaggregation reorder queue */ 135 struct sk_buff_head queue; 136 }; 137 138 #define CARL9170_QUEUE_TIMEOUT 256 139 #define CARL9170_BUMP_QUEUE 1000 140 #define CARL9170_TX_TIMEOUT 2500 141 #define CARL9170_JANITOR_DELAY 128 142 #define CARL9170_QUEUE_STUCK_TIMEOUT 5500 143 #define CARL9170_STAT_WORK 30000 144 145 #define CARL9170_NUM_TX_AGG_MAX 30 146 147 /* 148 * Tradeoff between stability/latency and speed. 149 * 150 * AR9170_TXQ_DEPTH is devised by dividing the amount of available 151 * tx buffers with the size of a full ethernet frame + overhead. 152 * 153 * Naturally: The higher the limit, the faster the device CAN send. 154 * However, even a slight over-commitment at the wrong time and the 155 * hardware is doomed to send all already-queued frames at suboptimal 156 * rates. This in turn leads to an enormous amount of unsuccessful 157 * retries => Latency goes up, whereas the throughput goes down. CRASH! 158 */ 159 #define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2) 160 #define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH) 161 162 struct carl9170_tx_queue_stats { 163 unsigned int count; 164 unsigned int limit; 165 unsigned int len; 166 }; 167 168 struct carl9170_vif { 169 unsigned int id; 170 struct ieee80211_vif __rcu *vif; 171 }; 172 173 struct carl9170_vif_info { 174 struct list_head list; 175 bool active; 176 unsigned int id; 177 struct sk_buff *beacon; 178 bool enable_beacon; 179 }; 180 181 #define AR9170_NUM_RX_URBS 16 182 #define AR9170_NUM_RX_URBS_MUL 2 183 #define AR9170_NUM_TX_URBS 8 184 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS) 185 186 enum carl9170_device_features { 187 CARL9170_WPS_BUTTON = BIT(0), 188 CARL9170_ONE_LED = BIT(1), 189 }; 190 191 #ifdef CONFIG_CARL9170_LEDS 192 struct ar9170; 193 194 struct carl9170_led { 195 struct ar9170 *ar; 196 struct led_classdev l; 197 char name[32]; 198 unsigned int toggled; 199 bool last_state; 200 bool registered; 201 }; 202 #endif /* CONFIG_CARL9170_LEDS */ 203 204 enum carl9170_restart_reasons { 205 CARL9170_RR_NO_REASON = 0, 206 CARL9170_RR_FATAL_FIRMWARE_ERROR, 207 CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS, 208 CARL9170_RR_WATCHDOG, 209 CARL9170_RR_STUCK_TX, 210 CARL9170_RR_UNRESPONSIVE_DEVICE, 211 CARL9170_RR_COMMAND_TIMEOUT, 212 CARL9170_RR_TOO_MANY_PHY_ERRORS, 213 CARL9170_RR_LOST_RSP, 214 CARL9170_RR_INVALID_RSP, 215 CARL9170_RR_USER_REQUEST, 216 217 __CARL9170_RR_LAST, 218 }; 219 220 enum carl9170_erp_modes { 221 CARL9170_ERP_INVALID, 222 CARL9170_ERP_AUTO, 223 CARL9170_ERP_MAC80211, 224 CARL9170_ERP_OFF, 225 CARL9170_ERP_CTS, 226 CARL9170_ERP_RTS, 227 __CARL9170_ERP_NUM, 228 }; 229 230 struct ar9170 { 231 struct ath_common common; 232 struct ieee80211_hw *hw; 233 struct mutex mutex; 234 enum carl9170_device_state state; 235 spinlock_t state_lock; 236 enum carl9170_restart_reasons last_reason; 237 bool registered; 238 239 /* USB */ 240 struct usb_device *udev; 241 struct usb_interface *intf; 242 struct usb_anchor rx_anch; 243 struct usb_anchor rx_work; 244 struct usb_anchor rx_pool; 245 struct usb_anchor tx_wait; 246 struct usb_anchor tx_anch; 247 struct usb_anchor tx_cmd; 248 struct usb_anchor tx_err; 249 struct tasklet_struct usb_tasklet; 250 atomic_t tx_cmd_urbs; 251 atomic_t tx_anch_urbs; 252 atomic_t rx_anch_urbs; 253 atomic_t rx_work_urbs; 254 atomic_t rx_pool_urbs; 255 kernel_ulong_t features; 256 257 /* firmware settings */ 258 struct completion fw_load_wait; 259 struct completion fw_boot_wait; 260 struct { 261 const struct carl9170fw_desc_head *desc; 262 const struct firmware *fw; 263 unsigned int offset; 264 unsigned int address; 265 unsigned int cmd_bufs; 266 unsigned int api_version; 267 unsigned int vif_num; 268 unsigned int err_counter; 269 unsigned int bug_counter; 270 u32 beacon_addr; 271 unsigned int beacon_max_len; 272 bool rx_stream; 273 bool tx_stream; 274 bool rx_filter; 275 bool hw_counters; 276 unsigned int mem_blocks; 277 unsigned int mem_block_size; 278 unsigned int rx_size; 279 unsigned int tx_seq_table; 280 bool ba_filter; 281 bool disable_offload_fw; 282 } fw; 283 284 /* interface configuration combinations */ 285 struct ieee80211_iface_limit if_comb_limits[1]; 286 struct ieee80211_iface_combination if_combs[1]; 287 288 /* reset / stuck frames/queue detection */ 289 struct work_struct restart_work; 290 struct work_struct ping_work; 291 unsigned int restart_counter; 292 unsigned long queue_stop_timeout[__AR9170_NUM_TXQ]; 293 unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ]; 294 bool needs_full_reset; 295 bool force_usb_reset; 296 atomic_t pending_restarts; 297 298 /* interface mode settings */ 299 struct list_head vif_list; 300 unsigned long vif_bitmap; 301 unsigned int vifs; 302 struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC]; 303 304 /* beaconing */ 305 spinlock_t beacon_lock; 306 unsigned int global_pretbtt; 307 unsigned int global_beacon_int; 308 struct carl9170_vif_info __rcu *beacon_iter; 309 unsigned int beacon_enabled; 310 311 /* cryptographic engine */ 312 u64 usedkeys; 313 bool rx_software_decryption; 314 bool disable_offload; 315 316 /* filter settings */ 317 u64 cur_mc_hash; 318 u32 cur_filter; 319 unsigned int filter_state; 320 unsigned int rx_filter_caps; 321 bool sniffer_enabled; 322 323 /* MAC */ 324 enum carl9170_erp_modes erp_mode; 325 326 /* PHY */ 327 struct ieee80211_channel *channel; 328 unsigned int num_channels; 329 int noise[4]; 330 unsigned int chan_fail; 331 unsigned int total_chan_fail; 332 u8 heavy_clip; 333 u8 ht_settings; 334 struct { 335 u64 active; /* usec */ 336 u64 cca; /* usec */ 337 u64 tx_time; /* usec */ 338 u64 rx_total; 339 u64 rx_overrun; 340 } tally; 341 struct delayed_work stat_work; 342 struct survey_info *survey; 343 344 /* power calibration data */ 345 u8 power_5G_leg[4]; 346 u8 power_2G_cck[4]; 347 u8 power_2G_ofdm[4]; 348 u8 power_5G_ht20[8]; 349 u8 power_5G_ht40[8]; 350 u8 power_2G_ht20[8]; 351 u8 power_2G_ht40[8]; 352 353 #ifdef CONFIG_CARL9170_LEDS 354 /* LED */ 355 struct delayed_work led_work; 356 struct carl9170_led leds[AR9170_NUM_LEDS]; 357 #endif /* CONFIG_CARL9170_LEDS */ 358 359 /* qos queue settings */ 360 spinlock_t tx_stats_lock; 361 struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ]; 362 struct ieee80211_tx_queue_params edcf[5]; 363 struct completion tx_flush; 364 365 /* CMD */ 366 int cmd_seq; 367 int readlen; 368 u8 *readbuf; 369 spinlock_t cmd_lock; 370 struct completion cmd_wait; 371 union { 372 __le32 cmd_buf[PAYLOAD_MAX + 1]; 373 struct carl9170_cmd cmd; 374 struct carl9170_rsp rsp; 375 }; 376 377 /* statistics */ 378 unsigned int tx_dropped; 379 unsigned int tx_ack_failures; 380 unsigned int tx_fcs_errors; 381 unsigned int rx_dropped; 382 383 /* EEPROM */ 384 struct ar9170_eeprom eeprom; 385 386 /* tx queuing */ 387 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ]; 388 struct sk_buff_head tx_status[__AR9170_NUM_TXQ]; 389 struct delayed_work tx_janitor; 390 unsigned long tx_janitor_last_run; 391 bool tx_schedule; 392 393 /* tx ampdu */ 394 struct work_struct ampdu_work; 395 spinlock_t tx_ampdu_list_lock; 396 struct carl9170_sta_tid __rcu *tx_ampdu_iter; 397 struct list_head tx_ampdu_list; 398 atomic_t tx_ampdu_upload; 399 atomic_t tx_ampdu_scheduler; 400 atomic_t tx_total_pending; 401 atomic_t tx_total_queued; 402 unsigned int tx_ampdu_list_len; 403 int current_density; 404 int current_factor; 405 bool tx_ampdu_schedule; 406 407 /* internal memory management */ 408 spinlock_t mem_lock; 409 unsigned long *mem_bitmap; 410 atomic_t mem_free_blocks; 411 atomic_t mem_allocs; 412 413 /* rxstream mpdu merge */ 414 struct ar9170_rx_head rx_plcp; 415 bool rx_has_plcp; 416 struct sk_buff *rx_failover; 417 int rx_failover_missing; 418 u32 ampdu_ref; 419 420 /* FIFO for collecting outstanding BlockAckRequest */ 421 struct list_head bar_list[__AR9170_NUM_TXQ]; 422 spinlock_t bar_list_lock[__AR9170_NUM_TXQ]; 423 424 #ifdef CONFIG_CARL9170_WPC 425 struct { 426 bool pbc_state; 427 struct input_dev *pbc; 428 char name[32]; 429 char phys[32]; 430 } wps; 431 #endif /* CONFIG_CARL9170_WPC */ 432 433 #ifdef CONFIG_CARL9170_DEBUGFS 434 struct carl9170_debug debug; 435 struct dentry *debug_dir; 436 #endif /* CONFIG_CARL9170_DEBUGFS */ 437 438 /* PSM */ 439 struct work_struct ps_work; 440 struct { 441 unsigned int dtim_counter; 442 unsigned long last_beacon; 443 unsigned long last_action; 444 unsigned long last_slept; 445 unsigned int sleep_ms; 446 unsigned int off_override; 447 bool state; 448 } ps; 449 450 #ifdef CONFIG_CARL9170_HWRNG 451 # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN 452 struct { 453 struct hwrng rng; 454 bool initialized; 455 char name[30 + 1]; 456 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; 457 unsigned int cache_idx; 458 } rng; 459 #endif /* CONFIG_CARL9170_HWRNG */ 460 }; 461 462 enum carl9170_ps_off_override_reasons { 463 PS_OFF_VIF = BIT(0), 464 PS_OFF_BCN = BIT(1), 465 }; 466 467 struct carl9170_bar_list_entry { 468 struct list_head list; 469 struct rcu_head head; 470 struct sk_buff *skb; 471 }; 472 473 struct carl9170_ba_stats { 474 u8 ampdu_len; 475 u8 ampdu_ack_len; 476 bool clear; 477 bool req; 478 }; 479 480 struct carl9170_sta_info { 481 bool ht_sta; 482 bool sleeping; 483 atomic_t pending_frames; 484 unsigned int ampdu_max_len; 485 struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS]; 486 struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS]; 487 }; 488 489 struct carl9170_tx_info { 490 unsigned long timeout; 491 struct ar9170 *ar; 492 struct kref ref; 493 }; 494 495 #define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s)) 496 #define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED)) 497 #define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE)) 498 #define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED)) 499 500 static inline void __carl9170_set_state(struct ar9170 *ar, 501 enum carl9170_device_state newstate) 502 { 503 ar->state = newstate; 504 } 505 506 static inline void carl9170_set_state(struct ar9170 *ar, 507 enum carl9170_device_state newstate) 508 { 509 unsigned long flags; 510 511 spin_lock_irqsave(&ar->state_lock, flags); 512 __carl9170_set_state(ar, newstate); 513 spin_unlock_irqrestore(&ar->state_lock, flags); 514 } 515 516 static inline void carl9170_set_state_when(struct ar9170 *ar, 517 enum carl9170_device_state min, enum carl9170_device_state newstate) 518 { 519 unsigned long flags; 520 521 spin_lock_irqsave(&ar->state_lock, flags); 522 if (CHK_DEV_STATE(ar, min)) 523 __carl9170_set_state(ar, newstate); 524 spin_unlock_irqrestore(&ar->state_lock, flags); 525 } 526 527 /* exported interface */ 528 void *carl9170_alloc(size_t priv_size); 529 int carl9170_register(struct ar9170 *ar); 530 void carl9170_unregister(struct ar9170 *ar); 531 void carl9170_free(struct ar9170 *ar); 532 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r); 533 void carl9170_ps_check(struct ar9170 *ar); 534 535 /* USB back-end */ 536 int carl9170_usb_open(struct ar9170 *ar); 537 void carl9170_usb_stop(struct ar9170 *ar); 538 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb); 539 void carl9170_usb_handle_tx_err(struct ar9170 *ar); 540 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids, 541 u32 plen, void *payload, u32 rlen, void *resp); 542 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, 543 const bool free_buf); 544 int carl9170_usb_restart(struct ar9170 *ar); 545 void carl9170_usb_reset(struct ar9170 *ar); 546 547 /* MAC */ 548 int carl9170_init_mac(struct ar9170 *ar); 549 int carl9170_set_qos(struct ar9170 *ar); 550 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast); 551 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id, 552 const u8 *mac); 553 int carl9170_set_operating_mode(struct ar9170 *ar); 554 int carl9170_set_beacon_timers(struct ar9170 *ar); 555 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar); 556 int carl9170_set_rts_cts_rate(struct ar9170 *ar); 557 int carl9170_set_ampdu_settings(struct ar9170 *ar); 558 int carl9170_set_slot_time(struct ar9170 *ar); 559 int carl9170_set_mac_rates(struct ar9170 *ar); 560 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry); 561 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac, 562 const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen); 563 int carl9170_disable_key(struct ar9170 *ar, const u8 id); 564 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel); 565 566 /* RX */ 567 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len); 568 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len); 569 570 /* TX */ 571 void carl9170_op_tx(struct ieee80211_hw *hw, 572 struct ieee80211_tx_control *control, 573 struct sk_buff *skb); 574 void carl9170_tx_janitor(struct work_struct *work); 575 void carl9170_tx_process_status(struct ar9170 *ar, 576 const struct carl9170_rsp *cmd); 577 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb, 578 const bool success); 579 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb); 580 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb); 581 void carl9170_tx_scheduler(struct ar9170 *ar); 582 void carl9170_tx_get_skb(struct sk_buff *skb); 583 int carl9170_tx_put_skb(struct sk_buff *skb); 584 int carl9170_update_beacon(struct ar9170 *ar, const bool submit); 585 586 /* LEDs */ 587 #ifdef CONFIG_CARL9170_LEDS 588 int carl9170_led_register(struct ar9170 *ar); 589 void carl9170_led_unregister(struct ar9170 *ar); 590 #endif /* CONFIG_CARL9170_LEDS */ 591 int carl9170_led_init(struct ar9170 *ar); 592 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state); 593 594 /* PHY / RF */ 595 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel, 596 enum nl80211_channel_type bw); 597 int carl9170_get_noisefloor(struct ar9170 *ar); 598 599 /* FW */ 600 int carl9170_parse_firmware(struct ar9170 *ar); 601 602 extern struct ieee80211_rate __carl9170_ratetable[]; 603 extern int modparam_noht; 604 605 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif) 606 { 607 return container_of(carl_vif, struct ar9170, 608 vif_priv[carl_vif->id]); 609 } 610 611 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb) 612 { 613 return (void *)((struct _carl9170_tx_superframe *) 614 skb->data)->frame_data; 615 } 616 617 static inline u16 get_seq_h(struct ieee80211_hdr *hdr) 618 { 619 return le16_to_cpu(hdr->seq_ctrl) >> 4; 620 } 621 622 static inline u16 carl9170_get_seq(struct sk_buff *skb) 623 { 624 return get_seq_h(carl9170_get_hdr(skb)); 625 } 626 627 static inline u16 get_tid_h(struct ieee80211_hdr *hdr) 628 { 629 return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK; 630 } 631 632 static inline u16 carl9170_get_tid(struct sk_buff *skb) 633 { 634 return get_tid_h(carl9170_get_hdr(skb)); 635 } 636 637 static inline struct ieee80211_vif * 638 carl9170_get_vif(struct carl9170_vif_info *priv) 639 { 640 return container_of((void *)priv, struct ieee80211_vif, drv_priv); 641 } 642 643 /* Protected by ar->mutex or RCU */ 644 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar) 645 { 646 struct carl9170_vif_info *cvif; 647 648 list_for_each_entry_rcu(cvif, &ar->vif_list, list) { 649 if (cvif->active) 650 return carl9170_get_vif(cvif); 651 } 652 653 return NULL; 654 } 655 656 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif) 657 { 658 bool ret; 659 660 rcu_read_lock(); 661 ret = (carl9170_get_main_vif(ar) == vif); 662 rcu_read_unlock(); 663 return ret; 664 } 665 666 #endif /* __CARL9170_H */ 667