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path: root/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-3945-rs.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-3945-rs.c93
1 files changed, 62 insertions, 31 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index 21c841847d8..044abf734eb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -1,6 +1,6 @@
/******************************************************************************
*
- * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
+ * Copyright(c) 2005 - 2009 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@@ -36,6 +36,7 @@
#include <linux/workqueue.h>
+#include "iwl-commands.h"
#include "iwl-3945.h"
#define RS_NAME "iwl-3945-rs"
@@ -51,6 +52,7 @@ struct iwl3945_rate_scale_data {
struct iwl3945_rs_sta {
spinlock_t lock;
+ struct iwl_priv *priv;
s32 *expected_tpt;
unsigned long last_partial_flush;
unsigned long last_flush;
@@ -62,7 +64,7 @@ struct iwl3945_rs_sta {
u8 start_rate;
u8 ibss_sta_added;
struct timer_list rate_scale_flush;
- struct iwl3945_rate_scale_data win[IWL_RATE_COUNT];
+ struct iwl3945_rate_scale_data win[IWL_RATE_COUNT_3945];
#ifdef CONFIG_MAC80211_DEBUGFS
struct dentry *rs_sta_dbgfs_stats_table_file;
#endif
@@ -71,19 +73,19 @@ struct iwl3945_rs_sta {
int last_txrate_idx;
};
-static s32 iwl3945_expected_tpt_g[IWL_RATE_COUNT] = {
+static s32 iwl3945_expected_tpt_g[IWL_RATE_COUNT_3945] = {
7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202
};
-static s32 iwl3945_expected_tpt_g_prot[IWL_RATE_COUNT] = {
+static s32 iwl3945_expected_tpt_g_prot[IWL_RATE_COUNT_3945] = {
7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125
};
-static s32 iwl3945_expected_tpt_a[IWL_RATE_COUNT] = {
+static s32 iwl3945_expected_tpt_a[IWL_RATE_COUNT_3945] = {
0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186
};
-static s32 iwl3945_expected_tpt_b[IWL_RATE_COUNT] = {
+static s32 iwl3945_expected_tpt_b[IWL_RATE_COUNT_3945] = {
7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0
};
@@ -119,7 +121,7 @@ static struct iwl3945_tpt_entry iwl3945_tpt_table_g[] = {
#define IWL_RATE_MAX_WINDOW 62
#define IWL_RATE_FLUSH (3*HZ)
#define IWL_RATE_WIN_FLUSH (HZ/2)
-#define IWL_RATE_HIGH_TH 11520
+#define IWL39_RATE_HIGH_TH 11520
#define IWL_SUCCESS_UP_TH 8960
#define IWL_SUCCESS_DOWN_TH 10880
#define IWL_RATE_MIN_FAILURE_TH 8
@@ -165,7 +167,7 @@ static void iwl3945_clear_window(struct iwl3945_rate_scale_data *window)
window->success_counter = 0;
window->success_ratio = -1;
window->counter = 0;
- window->average_tpt = IWL_INV_TPT;
+ window->average_tpt = IWL_INVALID_VALUE;
window->stamp = 0;
}
@@ -181,13 +183,14 @@ static int iwl3945_rate_scale_flush_windows(struct iwl3945_rs_sta *rs_sta)
int unflushed = 0;
int i;
unsigned long flags;
+ struct iwl_priv *priv = rs_sta->priv;
/*
* For each rate, if we have collected data on that rate
* and it has been more than IWL_RATE_WIN_FLUSH
* since we flushed, clear out the gathered statistics
*/
- for (i = 0; i < IWL_RATE_COUNT; i++) {
+ for (i = 0; i < IWL_RATE_COUNT_3945; i++) {
if (!rs_sta->win[i].counter)
continue;
@@ -213,6 +216,7 @@ static int iwl3945_rate_scale_flush_windows(struct iwl3945_rs_sta *rs_sta)
static void iwl3945_bg_rate_scale_flush(unsigned long data)
{
struct iwl3945_rs_sta *rs_sta = (void *)data;
+ struct iwl_priv *priv = rs_sta->priv;
int unflushed = 0;
unsigned long flags;
u32 packet_count, duration, pps;
@@ -286,6 +290,7 @@ static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta,
{
unsigned long flags;
s32 fail_count;
+ struct iwl_priv *priv = rs_sta->priv;
if (!retries) {
IWL_DEBUG_RATE("leave: retries == 0 -- should be at least 1\n");
@@ -329,7 +334,7 @@ static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta,
window->average_tpt = ((window->success_ratio *
rs_sta->expected_tpt[index] + 64) / 128);
else
- window->average_tpt = IWL_INV_TPT;
+ window->average_tpt = IWL_INVALID_VALUE;
spin_unlock_irqrestore(&rs_sta->lock, flags);
@@ -339,7 +344,7 @@ static void rs_rate_init(void *priv_r, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta)
{
struct iwl3945_rs_sta *rs_sta = priv_sta;
- struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_r;
+ struct iwl_priv *priv = (struct iwl_priv *)priv_r;
int i;
IWL_DEBUG_RATE("enter\n");
@@ -379,10 +384,11 @@ static void rs_free(void *priv)
return;
}
-static void *rs_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
+static void *rs_alloc_sta(void *iwl_priv, struct ieee80211_sta *sta, gfp_t gfp)
{
struct iwl3945_rs_sta *rs_sta;
struct iwl3945_sta_priv *psta = (void *) sta->drv_priv;
+ struct iwl_priv *priv = iwl_priv;
int i;
/*
@@ -402,6 +408,8 @@ static void *rs_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
spin_lock_init(&rs_sta->lock);
+ rs_sta->priv = priv;
+
rs_sta->start_rate = IWL_RATE_INVALID;
/* default to just 802.11b */
@@ -417,7 +425,7 @@ static void *rs_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
rs_sta->rate_scale_flush.data = (unsigned long)rs_sta;
rs_sta->rate_scale_flush.function = &iwl3945_bg_rate_scale_flush;
- for (i = 0; i < IWL_RATE_COUNT; i++)
+ for (i = 0; i < IWL_RATE_COUNT_3945; i++)
iwl3945_clear_window(&rs_sta->win[i]);
IWL_DEBUG_RATE("leave\n");
@@ -425,11 +433,12 @@ static void *rs_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
return rs_sta;
}
-static void rs_free_sta(void *priv, struct ieee80211_sta *sta,
+static void rs_free_sta(void *iwl_priv, struct ieee80211_sta *sta,
void *priv_sta)
{
struct iwl3945_sta_priv *psta = (void *) sta->drv_priv;
struct iwl3945_rs_sta *rs_sta = priv_sta;
+ struct iwl_priv *priv = rs_sta->priv;
psta->rs_sta = NULL;
@@ -443,7 +452,7 @@ static void rs_free_sta(void *priv, struct ieee80211_sta *sta,
/**
* rs_tx_status - Update rate control values based on Tx results
*
- * NOTE: Uses iwl3945_priv->retry_rate for the # of retries attempted by
+ * NOTE: Uses iwl_priv->retry_rate for the # of retries attempted by
* the hardware for each rate.
*/
static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband,
@@ -453,7 +462,7 @@ static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband
s8 retries = 0, current_count;
int scale_rate_index, first_index, last_index;
unsigned long flags;
- struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
+ struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
struct iwl3945_rs_sta *rs_sta = priv_sta;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
@@ -462,7 +471,7 @@ static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband
retries = info->status.rates[0].count;
first_index = sband->bitrates[info->status.rates[0].idx].hw_value;
- if ((first_index < 0) || (first_index >= IWL_RATE_COUNT)) {
+ if ((first_index < 0) || (first_index >= IWL_RATE_COUNT_3945)) {
IWL_DEBUG_RATE("leave: Rate out of bounds: %d\n", first_index);
return;
}
@@ -547,6 +556,7 @@ static u16 iwl3945_get_adjacent_rate(struct iwl3945_rs_sta *rs_sta,
{
u8 high = IWL_RATE_INVALID;
u8 low = IWL_RATE_INVALID;
+ struct iwl_priv *priv = rs_sta->priv;
/* 802.11A walks to the next literal adjacent rate in
* the rate table */
@@ -565,7 +575,8 @@ static u16 iwl3945_get_adjacent_rate(struct iwl3945_rs_sta *rs_sta,
/* Find the next rate that is in the rate mask */
i = index + 1;
- for (mask = (1 << i); i < IWL_RATE_COUNT; i++, mask <<= 1) {
+ for (mask = (1 << i); i < IWL_RATE_COUNT_3945;
+ i++, mask <<= 1) {
if (rate_mask & mask) {
high = i;
break;
@@ -631,16 +642,17 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
int index;
struct iwl3945_rs_sta *rs_sta = priv_sta;
struct iwl3945_rate_scale_data *window = NULL;
- int current_tpt = IWL_INV_TPT;
- int low_tpt = IWL_INV_TPT;
- int high_tpt = IWL_INV_TPT;
+ int current_tpt = IWL_INVALID_VALUE;
+ int low_tpt = IWL_INVALID_VALUE;
+ int high_tpt = IWL_INVALID_VALUE;
u32 fail_count;
s8 scale_action = 0;
unsigned long flags;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
u16 fc;
u16 rate_mask = 0;
- struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_r;
+ s8 max_rate_idx = -1;
+ struct iwl_priv *priv = (struct iwl_priv *)priv_r;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
IWL_DEBUG_RATE("enter\n");
@@ -664,7 +676,14 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
return;
}
- index = min(rs_sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT - 1);
+ /* get user max rate if set */
+ max_rate_idx = txrc->max_rate_idx;
+ if ((sband->band == IEEE80211_BAND_5GHZ) && (max_rate_idx != -1))
+ max_rate_idx += IWL_FIRST_OFDM_RATE;
+ if ((max_rate_idx < 0) || (max_rate_idx >= IWL_RATE_COUNT))
+ max_rate_idx = -1;
+
+ index = min(rs_sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT_3945 - 1);
if (sband->band == IEEE80211_BAND_5GHZ)
rate_mask = rate_mask << IWL_FIRST_OFDM_RATE;
@@ -695,6 +714,12 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
rs_sta->start_rate = IWL_RATE_INVALID;
}
+ /* force user max rate if set by user */
+ if ((max_rate_idx != -1) && (max_rate_idx < index)) {
+ if (rate_mask & (1 << max_rate_idx))
+ index = max_rate_idx;
+ }
+
window = &(rs_sta->win[index]);
fail_count = window->counter - window->success_counter;
@@ -721,6 +746,10 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
low = high_low & 0xff;
high = (high_low >> 8) & 0xff;
+ /* If user set max rate, dont allow higher than user constrain */
+ if ((max_rate_idx != -1) && (max_rate_idx < high))
+ high = IWL_RATE_INVALID;
+
if (low != IWL_RATE_INVALID)
low_tpt = rs_sta->win[low].average_tpt;
@@ -734,16 +763,18 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
if ((window->success_ratio < IWL_RATE_DECREASE_TH) || !current_tpt) {
IWL_DEBUG_RATE("decrease rate because of low success_ratio\n");
scale_action = -1;
- } else if ((low_tpt == IWL_INV_TPT) && (high_tpt == IWL_INV_TPT))
+ } else if ((low_tpt == IWL_INVALID_VALUE) &&
+ (high_tpt == IWL_INVALID_VALUE))
scale_action = 1;
- else if ((low_tpt != IWL_INV_TPT) && (high_tpt != IWL_INV_TPT) &&
+ else if ((low_tpt != IWL_INVALID_VALUE) &&
+ (high_tpt != IWL_INVALID_VALUE) &&
(low_tpt < current_tpt) && (high_tpt < current_tpt)) {
IWL_DEBUG_RATE("No action -- low [%d] & high [%d] < "
"current_tpt [%d]\n",
low_tpt, high_tpt, current_tpt);
scale_action = 0;
} else {
- if (high_tpt != IWL_INV_TPT) {
+ if (high_tpt != IWL_INVALID_VALUE) {
if (high_tpt > current_tpt)
scale_action = 1;
else {
@@ -751,7 +782,7 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
("decrease rate because of high tpt\n");
scale_action = -1;
}
- } else if (low_tpt != IWL_INV_TPT) {
+ } else if (low_tpt != IWL_INVALID_VALUE) {
if (low_tpt > current_tpt) {
IWL_DEBUG_RATE
("decrease rate because of low tpt\n");
@@ -825,7 +856,7 @@ static ssize_t iwl3945_sta_dbgfs_stats_table_read(struct file *file,
lq_sta->tx_packets,
lq_sta->last_txrate_idx,
lq_sta->start_rate, jiffies_to_msecs(lq_sta->flush_time));
- for (j = 0; j < IWL_RATE_COUNT; j++) {
+ for (j = 0; j < IWL_RATE_COUNT_3945; j++) {
desc += sprintf(buff+desc,
"counter=%d success=%d %%=%d\n",
lq_sta->win[j].counter,
@@ -877,7 +908,7 @@ static struct rate_control_ops rs_ops = {
void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
{
- struct iwl3945_priv *priv = hw->priv;
+ struct iwl_priv *priv = hw->priv;
s32 rssi = 0;
unsigned long flags;
struct iwl3945_rs_sta *rs_sta;
@@ -888,7 +919,7 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
rcu_read_lock();
- sta = ieee80211_find_sta(hw, priv->stations[sta_id].sta.sta.addr);
+ sta = ieee80211_find_sta(hw, priv->stations_39[sta_id].sta.sta.addr);
if (!sta) {
rcu_read_unlock();
return;
@@ -903,7 +934,7 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
switch (priv->band) {
case IEEE80211_BAND_2GHZ:
/* TODO: this always does G, not a regression */
- if (priv->active_rxon.flags & RXON_FLG_TGG_PROTECT_MSK) {
+ if (priv->active39_rxon.flags & RXON_FLG_TGG_PROTECT_MSK) {
rs_sta->tgg = 1;
rs_sta->expected_tpt = iwl3945_expected_tpt_g_prot;
} else
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 10:34:36 +0000