--- /dev/null
+/*
+ * Atheros CARL9170 driver
+ *
+ * Driver specific definitions
+ *
+ * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, see
+ * http://www.gnu.org/licenses/.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ * Copyright (c) 2007-2008 Atheros Communications, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef __CARL9170_H
+#define __CARL9170_H
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/completion.h>
+#include <linux/spinlock.h>
+#include <linux/hw_random.h>
+#include <net/cfg80211.h>
+#include <net/mac80211.h>
+#include <linux/usb.h>
+#ifdef CONFIG_CARL9170_LEDS
+#include <linux/leds.h>
+#endif /* CONFIG_CARL9170_LEDS */
+#ifdef CONFIG_CARL9170_WPC
+#include <linux/input.h>
+#endif /* CONFIG_CARL9170_WPC */
+#include "eeprom.h"
+#include "wlan.h"
+#include "hw.h"
+#include "fwdesc.h"
+#include "fwcmd.h"
+#include "../regd.h"
+
+#ifdef CONFIG_CARL9170_DEBUGFS
+#include "debug.h"
+#endif /* CONFIG_CARL9170_DEBUGFS */
+
+#define CARL9170FW_NAME "carl9170-1.fw"
+
+#define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1)
+
+static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 };
+
+#define CARL9170_MAX_RX_BUFFER_SIZE 8192
+
+enum carl9170_device_state {
+ CARL9170_UNKNOWN_STATE,
+ CARL9170_STOPPED,
+ CARL9170_IDLE,
+ CARL9170_STARTED,
+};
+
+#define WME_BA_BMP_SIZE 64
+#define CARL9170_TX_USER_RATE_TRIES 3
+
+#define TID_TO_WME_AC(_tid) \
+ ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \
+ (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \
+ (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \
+ IEEE80211_AC_VO)
+
+#define SEQ_DIFF(_start, _seq) \
+ (((_start) - (_seq)) & 0x0fff)
+#define SEQ_PREV(_seq) \
+ (((_seq) - 1) & 0x0fff)
+#define SEQ_NEXT(_seq) \
+ (((_seq) + 1) & 0x0fff)
+#define BAW_WITHIN(_start, _bawsz, _seqno) \
+ ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
+
+enum carl9170_tid_state {
+ CARL9170_TID_STATE_INVALID,
+ CARL9170_TID_STATE_KILLED,
+ CARL9170_TID_STATE_SHUTDOWN,
+ CARL9170_TID_STATE_SUSPEND,
+ CARL9170_TID_STATE_PROGRESS,
+ CARL9170_TID_STATE_IDLE,
+ CARL9170_TID_STATE_XMIT,
+};
+
+#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
+#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
+#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
+
+struct carl9170_sta_tid {
+ /* must be the first entry! */
+ struct list_head list;
+
+ /* temporary list for RCU unlink procedure */
+ struct list_head tmp_list;
+
+ /* lock for the following data structures */
+ spinlock_t lock;
+
+ unsigned int counter;
+ enum carl9170_tid_state state;
+ u8 tid; /* TID number ( 0 - 15 ) */
+ u16 max; /* max. AMPDU size */
+
+ u16 snx; /* awaiting _next_ frame */
+ u16 hsn; /* highest _queued_ sequence */
+ u16 bsn; /* base of the tx/agg bitmap */
+ unsigned long bitmap[CARL9170_BAW_SIZE];
+
+ /* Preaggregation reorder queue */
+ struct sk_buff_head queue;
+
+ struct ieee80211_sta *sta;
+ struct ieee80211_vif *vif;
+};
+
+#define CARL9170_QUEUE_TIMEOUT 256
+#define CARL9170_BUMP_QUEUE 1000
+#define CARL9170_TX_TIMEOUT 2500
+#define CARL9170_JANITOR_DELAY 128
+#define CARL9170_QUEUE_STUCK_TIMEOUT 5500
+#define CARL9170_STAT_WORK 30000
+
+#define CARL9170_NUM_TX_AGG_MAX 30
+
+/*
+ * Tradeoff between stability/latency and speed.
+ *
+ * AR9170_TXQ_DEPTH is devised by dividing the amount of available
+ * tx buffers with the size of a full ethernet frame + overhead.
+ *
+ * Naturally: The higher the limit, the faster the device CAN send.
+ * However, even a slight over-commitment at the wrong time and the
+ * hardware is doomed to send all already-queued frames at suboptimal
+ * rates. This in turn leads to an enormous amount of unsuccessful
+ * retries => Latency goes up, whereas the throughput goes down. CRASH!
+ */
+#define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2)
+#define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH)
+
+struct carl9170_tx_queue_stats {
+ unsigned int count;
+ unsigned int limit;
+ unsigned int len;
+};
+
+struct carl9170_vif {
+ unsigned int id;
+ struct ieee80211_vif __rcu *vif;
+};
+
+struct carl9170_vif_info {
+ struct list_head list;
+ bool active;
+ unsigned int id;
+ struct sk_buff *beacon;
+ bool enable_beacon;
+};
+
+#define AR9170_NUM_RX_URBS 16
+#define AR9170_NUM_RX_URBS_MUL 2
+#define AR9170_NUM_TX_URBS 8
+#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
+
+enum carl9170_device_features {
+ CARL9170_WPS_BUTTON = BIT(0),
+ CARL9170_ONE_LED = BIT(1),
+};
+
+#ifdef CONFIG_CARL9170_LEDS
+struct ar9170;
+
+struct carl9170_led {
+ struct ar9170 *ar;
+ struct led_classdev l;
+ char name[32];
+ unsigned int toggled;
+ bool last_state;
+ bool registered;
+};
+#endif /* CONFIG_CARL9170_LEDS */
+
+enum carl9170_restart_reasons {
+ CARL9170_RR_NO_REASON = 0,
+ CARL9170_RR_FATAL_FIRMWARE_ERROR,
+ CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
+ CARL9170_RR_WATCHDOG,
+ CARL9170_RR_STUCK_TX,
+ CARL9170_RR_UNRESPONSIVE_DEVICE,
+ CARL9170_RR_COMMAND_TIMEOUT,
+ CARL9170_RR_TOO_MANY_PHY_ERRORS,
+ CARL9170_RR_LOST_RSP,
+ CARL9170_RR_INVALID_RSP,
+ CARL9170_RR_USER_REQUEST,
+
+ __CARL9170_RR_LAST,
+};
+
+enum carl9170_erp_modes {
+ CARL9170_ERP_INVALID,
+ CARL9170_ERP_AUTO,
+ CARL9170_ERP_MAC80211,
+ CARL9170_ERP_OFF,
+ CARL9170_ERP_CTS,
+ CARL9170_ERP_RTS,
+ __CARL9170_ERP_NUM,
+};
+
+struct ar9170 {
+ struct ath_common common;
+ struct ieee80211_hw *hw;
+ struct mutex mutex;
+ enum carl9170_device_state state;
+ spinlock_t state_lock;
+ enum carl9170_restart_reasons last_reason;
+ bool registered;
+
+ /* USB */
+ struct usb_device *udev;
+ struct usb_interface *intf;
+ struct usb_anchor rx_anch;
+ struct usb_anchor rx_work;
+ struct usb_anchor rx_pool;
+ struct usb_anchor tx_wait;
+ struct usb_anchor tx_anch;
+ struct usb_anchor tx_cmd;
+ struct usb_anchor tx_err;
+ struct tasklet_struct usb_tasklet;
+ atomic_t tx_cmd_urbs;
+ atomic_t tx_anch_urbs;
+ atomic_t rx_anch_urbs;
+ atomic_t rx_work_urbs;
+ atomic_t rx_pool_urbs;
+ kernel_ulong_t features;
+ bool usb_ep_cmd_is_bulk;
+
+ /* firmware settings */
+ struct completion fw_load_wait;
+ struct completion fw_boot_wait;
+ struct {
+ const struct carl9170fw_desc_head *desc;
+ const struct firmware *fw;
+ unsigned int offset;
+ unsigned int address;
+ unsigned int cmd_bufs;
+ unsigned int api_version;
+ unsigned int vif_num;
+ unsigned int err_counter;
+ unsigned int bug_counter;
+ u32 beacon_addr;
+ unsigned int beacon_max_len;
+ bool rx_stream;
+ bool tx_stream;
+ bool rx_filter;
+ bool hw_counters;
+ unsigned int mem_blocks;
+ unsigned int mem_block_size;
+ unsigned int rx_size;
+ unsigned int tx_seq_table;
+ bool ba_filter;
+ bool disable_offload_fw;
+ } fw;
+
+ /* interface configuration combinations */
+ struct ieee80211_iface_limit if_comb_limits[1];
+ struct ieee80211_iface_combination if_combs[1];
+
+ /* reset / stuck frames/queue detection */
+ struct work_struct restart_work;
+ struct work_struct ping_work;
+ unsigned int restart_counter;
+ unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
+ unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
+ bool needs_full_reset;
+ bool force_usb_reset;
+ atomic_t pending_restarts;
+
+ /* interface mode settings */
+ struct list_head vif_list;
+ unsigned long vif_bitmap;
+ unsigned int vifs;
+ struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
+
+ /* beaconing */
+ spinlock_t beacon_lock;
+ unsigned int global_pretbtt;
+ unsigned int global_beacon_int;
+ struct carl9170_vif_info __rcu *beacon_iter;
+ unsigned int beacon_enabled;
+
+ /* cryptographic engine */
+ u64 usedkeys;
+ bool rx_software_decryption;
+ bool disable_offload;
+
+ /* filter settings */
+ u64 cur_mc_hash;
+ u32 cur_filter;
+ unsigned int filter_state;
+ unsigned int rx_filter_caps;
+ bool sniffer_enabled;
+
+ /* MAC */
+ enum carl9170_erp_modes erp_mode;
+
+ /* PHY */
+ struct ieee80211_channel *channel;
+ unsigned int num_channels;
+ int noise[4];
+ unsigned int chan_fail;
+ unsigned int total_chan_fail;
+ u8 heavy_clip;
+ u8 ht_settings;
+ struct {
+ u64 active; /* usec */
+ u64 cca; /* usec */
+ u64 tx_time; /* usec */
+ u64 rx_total;
+ u64 rx_overrun;
+ } tally;
+ struct delayed_work stat_work;
+ struct survey_info *survey;
+
+ /* power calibration data */
+ u8 power_5G_leg[4];
+ u8 power_2G_cck[4];
+ u8 power_2G_ofdm[4];
+ u8 power_5G_ht20[8];
+ u8 power_5G_ht40[8];
+ u8 power_2G_ht20[8];
+ u8 power_2G_ht40[8];
+
+#ifdef CONFIG_CARL9170_LEDS
+ /* LED */
+ struct delayed_work led_work;
+ struct carl9170_led leds[AR9170_NUM_LEDS];
+#endif /* CONFIG_CARL9170_LEDS */
+
+ /* qos queue settings */
+ spinlock_t tx_stats_lock;
+ struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
+ struct ieee80211_tx_queue_params edcf[5];
+ struct completion tx_flush;
+
+ /* CMD */
+ int cmd_seq;
+ int readlen;
+ u8 *readbuf;
+ spinlock_t cmd_lock;
+ struct completion cmd_wait;
+ union {
+ __le32 cmd_buf[PAYLOAD_MAX + 1];
+ struct carl9170_cmd cmd;
+ struct carl9170_rsp rsp;
+ };
+
+ /* statistics */
+ unsigned int tx_dropped;
+ unsigned int tx_ack_failures;
+ unsigned int tx_fcs_errors;
+ unsigned int rx_dropped;
+
+ /* EEPROM */
+ struct ar9170_eeprom eeprom;
+
+ /* tx queuing */
+ struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
+ struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
+ struct delayed_work tx_janitor;
+ unsigned long tx_janitor_last_run;
+ bool tx_schedule;
+
+ /* tx ampdu */
+ struct work_struct ampdu_work;
+ spinlock_t tx_ampdu_list_lock;
+ struct carl9170_sta_tid __rcu *tx_ampdu_iter;
+ struct list_head tx_ampdu_list;
+ atomic_t tx_ampdu_upload;
+ atomic_t tx_ampdu_scheduler;
+ atomic_t tx_total_pending;
+ atomic_t tx_total_queued;
+ unsigned int tx_ampdu_list_len;
+ int current_density;
+ int current_factor;
+ bool tx_ampdu_schedule;
+
+ /* internal memory management */
+ spinlock_t mem_lock;
+ unsigned long *mem_bitmap;
+ atomic_t mem_free_blocks;
+ atomic_t mem_allocs;
+
+ /* rxstream mpdu merge */
+ struct ar9170_rx_head rx_plcp;
+ bool rx_has_plcp;
+ struct sk_buff *rx_failover;
+ int rx_failover_missing;
+ u32 ampdu_ref;
+
+ /* FIFO for collecting outstanding BlockAckRequest */
+ struct list_head bar_list[__AR9170_NUM_TXQ];
+ spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
+
+#ifdef CONFIG_CARL9170_WPC
+ struct {
+ bool pbc_state;
+ struct input_dev *pbc;
+ char name[32];
+ char phys[32];
+ } wps;
+#endif /* CONFIG_CARL9170_WPC */
+
+#ifdef CONFIG_CARL9170_DEBUGFS
+ struct carl9170_debug debug;
+ struct dentry *debug_dir;
+#endif /* CONFIG_CARL9170_DEBUGFS */
+
+ /* PSM */
+ struct work_struct ps_work;
+ struct {
+ unsigned int dtim_counter;
+ unsigned long last_beacon;
+ unsigned long last_action;
+ unsigned long last_slept;
+ unsigned int sleep_ms;
+ unsigned int off_override;
+ bool state;
+ } ps;
+
+#ifdef CONFIG_CARL9170_HWRNG
+# define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN
+ struct {
+ struct hwrng rng;
+ bool initialized;
+ char name[30 + 1];
+ u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
+ unsigned int cache_idx;
+ } rng;
+#endif /* CONFIG_CARL9170_HWRNG */
+};
+
+enum carl9170_ps_off_override_reasons {
+ PS_OFF_VIF = BIT(0),
+ PS_OFF_BCN = BIT(1),
+};
+
+struct carl9170_bar_list_entry {
+ struct list_head list;
+ struct rcu_head head;
+ struct sk_buff *skb;
+};
+
+struct carl9170_ba_stats {
+ u8 ampdu_len;
+ u8 ampdu_ack_len;
+ bool clear;
+ bool req;
+};
+
+struct carl9170_sta_info {
+ bool ht_sta;
+ bool sleeping;
+ atomic_t pending_frames;
+ unsigned int ampdu_max_len;
+ struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
+ struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
+};
+
+struct carl9170_tx_info {
+ unsigned long timeout;
+ struct ar9170 *ar;
+ struct kref ref;
+};
+
+#define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s))
+#define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED))
+#define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE))
+#define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED))
+
+static inline void __carl9170_set_state(struct ar9170 *ar,
+ enum carl9170_device_state newstate)
+{
+ ar->state = newstate;
+}
+
+static inline void carl9170_set_state(struct ar9170 *ar,
+ enum carl9170_device_state newstate)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ar->state_lock, flags);
+ __carl9170_set_state(ar, newstate);
+ spin_unlock_irqrestore(&ar->state_lock, flags);
+}
+
+static inline void carl9170_set_state_when(struct ar9170 *ar,
+ enum carl9170_device_state min, enum carl9170_device_state newstate)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ar->state_lock, flags);
+ if (CHK_DEV_STATE(ar, min))
+ __carl9170_set_state(ar, newstate);
+ spin_unlock_irqrestore(&ar->state_lock, flags);
+}
+
+/* exported interface */
+void *carl9170_alloc(size_t priv_size);
+int carl9170_register(struct ar9170 *ar);
+void carl9170_unregister(struct ar9170 *ar);
+void carl9170_free(struct ar9170 *ar);
+void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
+void carl9170_ps_check(struct ar9170 *ar);
+
+/* USB back-end */
+int carl9170_usb_open(struct ar9170 *ar);
+void carl9170_usb_stop(struct ar9170 *ar);
+void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
+void carl9170_usb_handle_tx_err(struct ar9170 *ar);
+int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
+ u32 plen, void *payload, u32 rlen, void *resp);
+int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
+ const bool free_buf);
+int carl9170_usb_restart(struct ar9170 *ar);
+void carl9170_usb_reset(struct ar9170 *ar);
+
+/* MAC */
+int carl9170_init_mac(struct ar9170 *ar);
+int carl9170_set_qos(struct ar9170 *ar);
+int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
+int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
+ const u8 *mac);
+int carl9170_set_operating_mode(struct ar9170 *ar);
+int carl9170_set_beacon_timers(struct ar9170 *ar);
+int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
+int carl9170_set_rts_cts_rate(struct ar9170 *ar);
+int carl9170_set_ampdu_settings(struct ar9170 *ar);
+int carl9170_set_slot_time(struct ar9170 *ar);
+int carl9170_set_mac_rates(struct ar9170 *ar);
+int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
+int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
+ const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
+int carl9170_disable_key(struct ar9170 *ar, const u8 id);
+int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
+
+/* RX */
+void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
+void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
+
+/* TX */
+void carl9170_op_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb);
+void carl9170_tx_janitor(struct work_struct *work);
+void carl9170_tx_process_status(struct ar9170 *ar,
+ const struct carl9170_rsp *cmd);
+void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
+ const bool success);
+void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
+void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
+void carl9170_tx_scheduler(struct ar9170 *ar);
+void carl9170_tx_get_skb(struct sk_buff *skb);
+int carl9170_tx_put_skb(struct sk_buff *skb);
+int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
+
+/* LEDs */
+#ifdef CONFIG_CARL9170_LEDS
+int carl9170_led_register(struct ar9170 *ar);
+void carl9170_led_unregister(struct ar9170 *ar);
+#endif /* CONFIG_CARL9170_LEDS */
+int carl9170_led_init(struct ar9170 *ar);
+int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
+
+/* PHY / RF */
+int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
+ enum nl80211_channel_type bw);
+int carl9170_get_noisefloor(struct ar9170 *ar);
+
+/* FW */
+int carl9170_parse_firmware(struct ar9170 *ar);
+
+extern struct ieee80211_rate __carl9170_ratetable[];
+extern int modparam_noht;
+
+static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
+{
+ return container_of(carl_vif, struct ar9170,
+ vif_priv[carl_vif->id]);
+}
+
+static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
+{
+ return (void *)((struct _carl9170_tx_superframe *)
+ skb->data)->frame_data;
+}
+
+static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
+{
+ return le16_to_cpu(hdr->seq_ctrl) >> 4;
+}
+
+static inline u16 carl9170_get_seq(struct sk_buff *skb)
+{
+ return get_seq_h(carl9170_get_hdr(skb));
+}
+
+static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
+{
+ return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
+}
+
+static inline u16 carl9170_get_tid(struct sk_buff *skb)
+{
+ return get_tid_h(carl9170_get_hdr(skb));
+}
+
+static inline struct ieee80211_vif *
+carl9170_get_vif(struct carl9170_vif_info *priv)
+{
+ return container_of((void *)priv, struct ieee80211_vif, drv_priv);
+}
+
+/* Protected by ar->mutex or RCU */
+static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
+{
+ struct carl9170_vif_info *cvif;
+
+ list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
+ if (cvif->active)
+ return carl9170_get_vif(cvif);
+ }
+
+ return NULL;
+}
+
+static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
+{
+ bool ret;
+
+ rcu_read_lock();
+ ret = (carl9170_get_main_vif(ar) == vif);
+ rcu_read_unlock();
+ return ret;
+}
+
+#endif /* __CARL9170_H */
Code Review / kvmfornfv.git / blobdiff