forked from Minki/linux
iwlwifi: Add comments to some driver data structures
Add comments to some driver data structures Remove unused "sched_retry" member from struct iwl3945_tx_queue Signed-off-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Cahill
David S. Miller
parent
81cd110d81
commit
bc47279f55
@ -130,6 +130,7 @@ struct iwl3945_queue {
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#define MAX_NUM_OF_TBS (20)
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/* One for each TFD */
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struct iwl3945_tx_info {
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struct ieee80211_tx_status status;
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struct sk_buff *skb[MAX_NUM_OF_TBS];
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@ -137,10 +138,15 @@ struct iwl3945_tx_info {
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/**
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* struct iwl3945_tx_queue - Tx Queue for DMA
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* @need_update: need to update read/write index
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* @shed_retry: queue is HT AGG enabled
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* @q: generic Rx/Tx queue descriptor
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* @bd: base of circular buffer of TFDs
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* @cmd: array of command/Tx buffers
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* @dma_addr_cmd: physical address of cmd/tx buffer array
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* @txb: array of per-TFD driver data
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* @need_update: indicates need to update read/write index
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*
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* Queue consists of circular buffer of BD's and required locking structures.
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* A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
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* descriptors) and required locking structures.
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*/
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struct iwl3945_tx_queue {
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struct iwl3945_queue q;
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@ -149,7 +155,6 @@ struct iwl3945_tx_queue {
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dma_addr_t dma_addr_cmd;
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struct iwl3945_tx_info *txb;
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int need_update;
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int sched_retry;
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int active;
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};
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@ -325,6 +330,13 @@ struct iwl3945_cmd_meta {
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} __attribute__ ((packed));
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/**
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* struct iwl3945_cmd
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*
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* For allocation of the command and tx queues, this establishes the overall
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* size of the largest command we send to uCode, except for a scan command
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* (which is relatively huge; space is allocated separately).
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*/
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struct iwl3945_cmd {
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struct iwl3945_cmd_meta meta;
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struct iwl3945_cmd_header hdr;
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@ -522,6 +534,19 @@ struct iwl3945_ibss_seq {
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struct list_head list;
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};
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/**
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* struct iwl4965_driver_hw_info
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* @max_txq_num: Max # Tx queues supported
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* @ac_queue_count: # Tx queues for EDCA Access Categories (AC)
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* @tx_cmd_len: Size of Tx command (but not including frame itself)
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* @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
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* @rx_buffer_size:
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* @max_rxq_log: Log-base-2 of max_rxq_size
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* @max_stations:
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* @bcast_sta_id:
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* @shared_virt: Pointer to driver/uCode shared Tx Byte Counts and Rx status
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* @shared_phys: Physical Pointer to Tx Byte Counts and Rx status
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*/
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struct iwl3945_driver_hw_info {
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u16 max_txq_num;
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u16 ac_queue_count;
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@ -857,6 +882,8 @@ struct iwl3945_priv {
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u16 last_seq_num;
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u16 last_frag_num;
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unsigned long last_packet_time;
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/* Hash table for finding stations in IBSS network */
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struct list_head ibss_mac_hash[IWL_IBSS_MAC_HASH_SIZE];
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/* eeprom */
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@ -129,6 +129,7 @@ struct iwl4965_queue {
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#define MAX_NUM_OF_TBS (20)
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/* One for each TFD */
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struct iwl4965_tx_info {
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struct ieee80211_tx_status status;
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struct sk_buff *skb[MAX_NUM_OF_TBS];
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@ -136,10 +137,16 @@ struct iwl4965_tx_info {
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/**
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* struct iwl4965_tx_queue - Tx Queue for DMA
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* @need_update: need to update read/write index
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* @shed_retry: queue is HT AGG enabled
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* @q: generic Rx/Tx queue descriptor
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* @bd: base of circular buffer of TFDs
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* @cmd: array of command/Tx buffers
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* @dma_addr_cmd: physical address of cmd/tx buffer array
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* @txb: array of per-TFD driver data
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* @need_update: indicates need to update read/write index
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* @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
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*
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* Queue consists of circular buffer of BD's and required locking structures.
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* A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
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* descriptors) and required locking structures.
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*/
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struct iwl4965_tx_queue {
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struct iwl4965_queue q;
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@ -332,9 +339,16 @@ struct iwl4965_cmd_meta {
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} __attribute__ ((packed));
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/**
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* struct iwl4965_cmd
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*
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* For allocation of the command and tx queues, this establishes the overall
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* size of the largest command we send to uCode, except for a scan command
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* (which is relatively huge; space is allocated separately).
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*/
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struct iwl4965_cmd {
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struct iwl4965_cmd_meta meta;
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struct iwl4965_cmd_header hdr;
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struct iwl4965_cmd_meta meta; /* driver data */
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struct iwl4965_cmd_header hdr; /* uCode API */
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union {
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struct iwl4965_addsta_cmd addsta;
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struct iwl4965_led_cmd led;
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@ -436,6 +450,20 @@ struct iwl4965_rx_queue {
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#ifdef CONFIG_IWL4965_HT
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#ifdef CONFIG_IWL4965_HT_AGG
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/**
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* struct iwl4965_ht_agg -- aggregation status while waiting for block-ack
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* @txq_id: Tx queue used for Tx attempt
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* @frame_count: # frames attempted by Tx command
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* @wait_for_ba: Expect block-ack before next Tx reply
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* @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
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* @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
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* @bitmap1: High order, one bit for each frame pending ACK in Tx window
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* @rate_n_flags: Rate at which Tx was attempted
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*
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* If REPLY_TX indicates that aggregation was attempted, driver must wait
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* for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
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* until block ack arrives.
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*/
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struct iwl4965_ht_agg {
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u16 txq_id;
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u16 frame_count;
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@ -566,6 +594,19 @@ struct iwl4965_ibss_seq {
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struct list_head list;
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};
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/**
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* struct iwl4965_driver_hw_info
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* @max_txq_num: Max # Tx queues supported
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* @ac_queue_count: # Tx queues for EDCA Access Categories (AC)
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* @tx_cmd_len: Size of Tx command (but not including frame itself)
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* @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
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* @rx_buffer_size:
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* @max_rxq_log: Log-base-2 of max_rxq_size
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* @max_stations:
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* @bcast_sta_id:
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* @shared_virt: Pointer to driver/uCode shared Tx Byte Counts and Rx status
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* @shared_phys: Physical Pointer to Tx Byte Counts and Rx status
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*/
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struct iwl4965_driver_hw_info {
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u16 max_txq_num;
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u16 ac_queue_count;
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@ -1149,10 +1190,11 @@ struct iwl4965_priv {
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u8 call_post_assoc_from_beacon;
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u8 assoc_station_added;
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u8 use_ant_b_for_management_frame; /* Tx antenna selection */
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/* HT variables */
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/* High Throughput (HT) variables */
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u8 is_dup;
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u8 is_ht_enabled;
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u8 channel_width; /* 0=20MHZ, 1=40MHZ */
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u8 channel_width; /* 0=20MHZ, 1=40MHZ supported */
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u8 current_channel_width;
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u8 valid_antenna; /* Bit mask of antennas actually connected */
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#ifdef CONFIG_IWL4965_SENSITIVITY
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@ -1229,6 +1271,8 @@ struct iwl4965_priv {
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u16 last_seq_num;
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u16 last_frag_num;
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unsigned long last_packet_time;
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/* Hash table for finding stations in IBSS network */
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struct list_head ibss_mac_hash[IWL_IBSS_MAC_HASH_SIZE];
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/* eeprom */
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