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iwlagn: iwl_tid_data moves to iwl-shared 

The rate scaling and the transport need to access the data in
iwl_tid_data, hence the move.

Note that the only component in the upper layer that needs this data
is the rate scaling. Refactoring the rate scaling may help to move
iwl_tid_data from the shared area to the transport area.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2011-08-25 23:11:18 -07:00 committed by John W. Linville
parent 1603dd495f
commit 5f85a7890c
9 changed files with 82 additions and 86 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/wireless/iwlwifi/iwl-agn-rs.c
View File

@ -297,10 +297,10 @@ static u8 rs_tl_add_packet(struct iwl_lq_sta *lq_data,
u8 *qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & 0xf;
} else
return MAX_TID_COUNT;
return IWL_MAX_TID_COUNT;
if (unlikely(tid >= TID_MAX_LOAD_COUNT))
return MAX_TID_COUNT;
return IWL_MAX_TID_COUNT;
tl = &lq_data->load[tid];
@ -313,7 +313,7 @@ static u8 rs_tl_add_packet(struct iwl_lq_sta *lq_data,
tl->queue_count = 1;
tl->head = 0;
tl->packet_count[0] = 1;
return MAX_TID_COUNT;
return IWL_MAX_TID_COUNT;
}
time_diff = TIME_WRAP_AROUND(tl->time_stamp, curr_time);
@ -2261,7 +2261,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
u8 done_search = 0;
u16 high_low;
s32 sr;
u8 tid = MAX_TID_COUNT;
u8 tid = IWL_MAX_TID_COUNT;
struct iwl_tid_data *tid_data;
struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
struct iwl_rxon_context *ctx = sta_priv->common.ctx;
@ -2280,8 +2280,9 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
lq_sta->supp_rates = sta->supp_rates[lq_sta->band];
tid = rs_tl_add_packet(lq_sta, hdr);
if ((tid != MAX_TID_COUNT) && (lq_sta->tx_agg_tid_en & (1 << tid))) {
tid_data = &priv->stations[lq_sta->lq.sta_id].tid[tid];
if ((tid != IWL_MAX_TID_COUNT) &&
(lq_sta->tx_agg_tid_en & (1 << tid))) {
tid_data = &priv->shrd->tid_data[lq_sta->lq.sta_id][tid];
if (tid_data->agg.state == IWL_AGG_OFF)
lq_sta->is_agg = 0;
else
@ -2651,9 +2652,10 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
iwl_ht_enabled(priv)) {
if ((lq_sta->last_tpt > IWL_AGG_TPT_THREHOLD) &&
(lq_sta->tx_agg_tid_en & (1 << tid)) &&
(tid != MAX_TID_COUNT)) {
(tid != IWL_MAX_TID_COUNT)) {
u8 sta_id = lq_sta->lq.sta_id;
tid_data =
&priv->stations[lq_sta->lq.sta_id].tid[tid];
&priv->shrd->tid_data[sta_id][tid];
if (tid_data->agg.state == IWL_AGG_OFF) {
IWL_DEBUG_RATE(priv,
"try to aggregate tid %d\n",

47
drivers/net/wireless/iwlwifi/iwl-agn-tx.c
View File

@ -410,13 +410,15 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
if (ieee80211_is_data_qos(fc)) {
u8 *qc = NULL;
struct iwl_tid_data *tid_data;
qc = ieee80211_get_qos_ctl(hdr);
tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
tid_data = &priv->shrd->tid_data[sta_id][tid];
if (WARN_ON_ONCE(tid >= MAX_TID_COUNT))
if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
goto drop_unlock_sta;
seq_number = priv->stations[sta_id].tid[tid].seq_number;
seq_number = tid_data->seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
hdr->seq_ctrl = hdr->seq_ctrl &
cpu_to_le16(IEEE80211_SCTL_FRAG);
@ -424,8 +426,8 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
seq_number += 0x10;
/* aggregation is on for this <sta,tid> */
if (info->flags & IEEE80211_TX_CTL_AMPDU &&
priv->stations[sta_id].tid[tid].agg.state == IWL_AGG_ON) {
txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
tid_data->agg.state == IWL_AGG_ON) {
txq_id = tid_data->agg.txq_id;
is_agg = true;
}
}
@ -456,9 +458,10 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
goto drop_unlock_sta;
if (ieee80211_is_data_qos(fc)) {
priv->stations[sta_id].tid[tid].tfds_in_queue++;
priv->shrd->tid_data[sta_id][tid].tfds_in_queue++;
if (!ieee80211_has_morefrags(fc))
priv->stations[sta_id].tid[tid].seq_number = seq_number;
priv->shrd->tid_data[sta_id][tid].seq_number =
seq_number;
}
spin_unlock(&priv->shrd->sta_lock);
@ -521,10 +524,10 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
IWL_ERR(priv, "Start AGG on invalid station\n");
return -ENXIO;
}
if (unlikely(tid >= MAX_TID_COUNT))
if (unlikely(tid >= IWL_MAX_TID_COUNT))
return -EINVAL;
if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) {
if (priv->shrd->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) {
IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n");
return -ENXIO;
}
@ -536,7 +539,7 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
}
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
tid_data = &priv->stations[sta_id].tid[tid];
tid_data = &priv->shrd->tid_data[sta_id][tid];
*ssn = SEQ_TO_SN(tid_data->seq_number);
tid_data->agg.txq_id = txq_id;
tid_data->agg.tx_fifo = tx_fifo;
@ -548,7 +551,7 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
return ret;
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
tid_data = &priv->stations[sta_id].tid[tid];
tid_data = &priv->shrd->tid_data[sta_id][tid];
if (tid_data->tfds_in_queue == 0) {
IWL_DEBUG_HT(priv, "HW queue is empty\n");
tid_data->agg.state = IWL_AGG_ON;
@ -583,11 +586,11 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
tid_data = &priv->stations[sta_id].tid[tid];
tid_data = &priv->shrd->tid_data[sta_id][tid];
ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
txq_id = tid_data->agg.txq_id;
switch (priv->stations[sta_id].tid[tid].agg.state) {
switch (priv->shrd->tid_data[sta_id][tid].agg.state) {
case IWL_EMPTYING_HW_QUEUE_ADDBA:
/*
* This can happen if the peer stops aggregation
@ -609,7 +612,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
/* The queue is not empty */
if (write_ptr != read_ptr) {
IWL_DEBUG_HT(priv, "Stopping a non empty AGG HW QUEUE\n");
priv->stations[sta_id].tid[tid].agg.state =
priv->shrd->tid_data[sta_id][tid].agg.state =
IWL_EMPTYING_HW_QUEUE_DELBA;
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
return 0;
@ -617,7 +620,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
IWL_DEBUG_HT(priv, "HW queue is empty\n");
turn_off:
priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
priv->shrd->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF;
/* do not restore/save irqs */
spin_unlock(&priv->shrd->sta_lock);
@ -643,14 +646,14 @@ static int iwlagn_txq_check_empty(struct iwl_priv *priv,
{
struct iwl_queue *q = &priv->txq[txq_id].q;
u8 *addr = priv->stations[sta_id].sta.sta.addr;
struct iwl_tid_data *tid_data = &priv->stations[sta_id].tid[tid];
struct iwl_tid_data *tid_data = &priv->shrd->tid_data[sta_id][tid];
struct iwl_rxon_context *ctx;
ctx = &priv->contexts[priv->stations[sta_id].ctxid];
lockdep_assert_held(&priv->shrd->sta_lock);
switch (priv->stations[sta_id].tid[tid].agg.state) {
switch (priv->shrd->tid_data[sta_id][tid].agg.state) {
case IWL_EMPTYING_HW_QUEUE_DELBA:
/* We are reclaiming the last packet of the */
/* aggregated HW queue */
@ -815,7 +818,7 @@ static void iwl_rx_reply_tx_agg(struct iwl_priv *priv,
IWLAGN_TX_RES_TID_POS;
int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
IWLAGN_TX_RES_RA_POS;
struct iwl_ht_agg *agg = &priv->stations[sta_id].tid[tid].agg;
struct iwl_ht_agg *agg = &priv->shrd->tid_data[sta_id][tid].agg;
u32 status = le16_to_cpu(tx_resp->status.status);
int i;
@ -893,13 +896,13 @@ static void iwl_free_tfds_in_queue(struct iwl_priv *priv,
{
lockdep_assert_held(&priv->shrd->sta_lock);
if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed)
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (priv->shrd->tid_data[sta_id][tid].tfds_in_queue >= freed)
priv->shrd->tid_data[sta_id][tid].tfds_in_queue -= freed;
else {
IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n",
priv->stations[sta_id].tid[tid].tfds_in_queue,
priv->shrd->tid_data[sta_id][tid].tfds_in_queue,
freed);
priv->stations[sta_id].tid[tid].tfds_in_queue = 0;
priv->shrd->tid_data[sta_id][tid].tfds_in_queue = 0;
}
}
@ -1149,7 +1152,7 @@ void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
txq = &priv->txq[scd_flow];
sta_id = ba_resp->sta_id;
tid = ba_resp->tid;
agg = &priv->stations[sta_id].tid[tid].agg;
agg = &priv->shrd->tid_data[sta_id][tid].agg;
/* Find index of block-ack window */
index = ba_resp_scd_ssn & (txq->q.n_bd - 1);

2
drivers/net/wireless/iwlwifi/iwl-agn.c
View File

@ -2203,7 +2203,7 @@ static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
* since the uCode will add 0x10 before using the value.
*/
for (i = 0; i < 8; i++) {
seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
seq -= 0x10;
wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
}

1
drivers/net/wireless/iwlwifi/iwl-commands.h
View File

@ -808,6 +808,7 @@ struct iwl_qosparam_cmd {
#define IWLAGN_STATION_COUNT 16
#define IWL_INVALID_STATION 255
#define IWL_MAX_TID_COUNT 9
#define STA_FLG_TX_RATE_MSK cpu_to_le32(1 << 2)
#define STA_FLG_PWR_SAVE_MSK cpu_to_le32(1 << 8)

23
drivers/net/wireless/iwlwifi/iwl-debugfs.c
View File

@ -340,6 +340,7 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
{
struct iwl_priv *priv = file->private_data;
struct iwl_station_entry *station;
struct iwl_tid_data *tid_data;
int max_sta = hw_params(priv).max_stations;
char *buf;
int i, j, pos = 0;
@ -363,22 +364,18 @@ static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
i, station->sta.sta.addr,
station->sta.station_flags_msk);
pos += scnprintf(buf + pos, bufsz - pos,
"TID\tseq_num\ttxq_id\tframes\ttfds\t");
pos += scnprintf(buf + pos, bufsz - pos,
"start_idx\tbitmap\t\t\trate_n_flags\n");
"TID\tseq_num\ttxq_id\ttfds\trate_n_flags\n");
for (j = 0; j < MAX_TID_COUNT; j++) {
for (j = 0; j < IWL_MAX_TID_COUNT; j++) {
tid_data = &priv->shrd->tid_data[i][j];
pos += scnprintf(buf + pos, bufsz - pos,
"%d:\t%#x\t%#x\t%u\t%u\t%u\t\t%#.16llx\t%#x",
j, station->tid[j].seq_number,
station->tid[j].agg.txq_id,
station->tid[j].agg.frame_count,
station->tid[j].tfds_in_queue,
station->tid[j].agg.start_idx,
station->tid[j].agg.bitmap,
station->tid[j].agg.rate_n_flags);
"%d:\t%#x\t%#x\t%u\t%#x",
j, tid_data->seq_number,
tid_data->agg.txq_id,
tid_data->tfds_in_queue,
tid_data->agg.rate_n_flags);
if (station->tid[j].agg.wait_for_ba)
if (tid_data->agg.wait_for_ba)
pos += scnprintf(buf + pos, bufsz - pos,
" - waitforba");
pos += scnprintf(buf + pos, bufsz - pos, "\n");

39
drivers/net/wireless/iwlwifi/iwl-dev.h
View File

@ -331,47 +331,9 @@ struct iwl_host_cmd {
#define IWL_SUPPORTED_RATES_IE_LEN 8
#define MAX_TID_COUNT 9
#define IWL_INVALID_RATE 0xFF
#define IWL_INVALID_VALUE -1
/**
* struct iwl_ht_agg -- aggregation status while waiting for block-ack
* @txq_id: Tx queue used for Tx attempt
* @frame_count: # frames attempted by Tx command
* @wait_for_ba: Expect block-ack before next Tx reply
* @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
* @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
* @bitmap1: High order, one bit for each frame pending ACK in Tx window
* @rate_n_flags: Rate at which Tx was attempted
*
* If REPLY_TX indicates that aggregation was attempted, driver must wait
* for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
* until block ack arrives.
*/
struct iwl_ht_agg {
u16 txq_id;
u16 frame_count;
u16 wait_for_ba;
u16 start_idx;
u64 bitmap;
u32 rate_n_flags;
#define IWL_AGG_OFF 0
#define IWL_AGG_ON 1
#define IWL_EMPTYING_HW_QUEUE_ADDBA 2
#define IWL_EMPTYING_HW_QUEUE_DELBA 3
u8 state;
u8 tx_fifo;
};
struct iwl_tid_data {
u16 seq_number; /* agn only */
u16 tfds_in_queue;
struct iwl_ht_agg agg;
};
union iwl_ht_rate_supp {
u16 rates;
struct {
@ -422,7 +384,6 @@ struct iwl_qos_info {
*/
struct iwl_station_entry {
struct iwl_addsta_cmd sta;
struct iwl_tid_data tid[MAX_TID_COUNT];
u8 used, ctxid;
struct iwl_link_quality_cmd *lq;
};

32
drivers/net/wireless/iwlwifi/iwl-shared.h
View File

@ -68,6 +68,8 @@
#include <linux/mutex.h>
#include <linux/gfp.h>
#include "iwl-commands.h"
/*This files includes all the types / functions that are exported by the
* upper layer to the bus and transport layer */
@ -166,6 +168,34 @@ struct iwl_hw_params {
const struct iwl_sensitivity_ranges *sens;
};
/**
* struct iwl_ht_agg - aggregation status while waiting for block-ack
* @txq_id: Tx queue used for Tx attempt
* @wait_for_ba: Expect block-ack before next Tx reply
* @rate_n_flags: Rate at which Tx was attempted
*
* If REPLY_TX indicates that aggregation was attempted, driver must wait
* for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
* until block ack arrives.
*/
struct iwl_ht_agg {
u16 txq_id;
u16 wait_for_ba;
u32 rate_n_flags;
#define IWL_AGG_OFF 0
#define IWL_AGG_ON 1
#define IWL_EMPTYING_HW_QUEUE_ADDBA 2
#define IWL_EMPTYING_HW_QUEUE_DELBA 3
u8 state;
u8 tx_fifo;
};
struct iwl_tid_data {
u16 seq_number; /* agn only */
u16 tfds_in_queue;
struct iwl_ht_agg agg;
};
/**
* struct iwl_shared - shared fields for all the layers of the driver
*
@ -200,6 +230,8 @@ struct iwl_shared {
spinlock_t lock;
spinlock_t sta_lock;
struct mutex mutex;
struct iwl_tid_data tid_data[IWLAGN_STATION_COUNT][IWL_MAX_TID_COUNT];
};
/*Whatever _m is (iwl_trans, iwl_priv, iwl_bus, these macros will work */

4
drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
View File

@ -438,11 +438,11 @@ void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid,
if (WARN_ON(sta_id == IWL_INVALID_STATION))
return;
if (WARN_ON(tid >= MAX_TID_COUNT))
if (WARN_ON(tid >= IWL_MAX_TID_COUNT))
return;
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
tid_data = &priv->stations[sta_id].tid[tid];
tid_data = &priv->shrd->tid_data[sta_id][tid];
ssn_idx = SEQ_TO_SN(tid_data->seq_number);
txq_id = tid_data->agg.txq_id;
tx_fifo = tid_data->agg.tx_fifo;

2
drivers/net/wireless/iwlwifi/iwl-trans.c
View File

@ -1193,7 +1193,7 @@ static void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id,
if (txq->sched_retry) {
agg_state =
priv->stations[txq->sta_id].tid[txq->tid].agg.state;
priv->shrd->tid_data[txq->sta_id][txq->tid].agg.state;
cond = (agg_state != IWL_EMPTYING_HW_QUEUE_DELBA);
} else {
cond = (status != TX_STATUS_FAIL_PASSIVE_NO_RX);