/******************************************************************************
*
- * Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
+ * Copyright(c) 2005 - 2008 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
#include <linux/skbuff.h>
#include <linux/wireless.h>
#include <net/mac80211.h>
-#include <net/ieee80211.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/workqueue.h>
-#define IWL 3945
+#include "../net/mac80211/rate.h"
-#include "../net/mac80211/ieee80211_rate.h"
-
-#include "iwlwifi.h"
+#include "iwl-3945.h"
#define RS_NAME "iwl-3945-rs"
-struct iwl_rate_scale_data {
+struct iwl3945_rate_scale_data {
u64 data;
s32 success_counter;
s32 success_ratio;
unsigned long stamp;
};
-struct iwl_rate_scale_priv {
+struct iwl3945_rs_sta {
spinlock_t lock;
s32 *expected_tpt;
unsigned long last_partial_flush;
u8 start_rate;
u8 ibss_sta_added;
struct timer_list rate_scale_flush;
- struct iwl_rate_scale_data win[IWL_RATE_COUNT];
+ struct iwl3945_rate_scale_data win[IWL_RATE_COUNT];
};
-static s32 iwl_expected_tpt_g[IWL_RATE_COUNT] = {
- 0, 0, 76, 104, 130, 168, 191, 202, 7, 13, 35, 58
+static s32 iwl3945_expected_tpt_g[IWL_RATE_COUNT] = {
+ 7, 13, 35, 58, 0, 0, 76, 104, 130, 168, 191, 202
};
-static s32 iwl_expected_tpt_g_prot[IWL_RATE_COUNT] = {
- 0, 0, 0, 80, 93, 113, 123, 125, 7, 13, 35, 58
+static s32 iwl3945_expected_tpt_g_prot[IWL_RATE_COUNT] = {
+ 7, 13, 35, 58, 0, 0, 0, 80, 93, 113, 123, 125
};
-static s32 iwl_expected_tpt_a[IWL_RATE_COUNT] = {
- 40, 57, 72, 98, 121, 154, 177, 186, 0, 0, 0, 0
+static s32 iwl3945_expected_tpt_a[IWL_RATE_COUNT] = {
+ 0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186
};
-static s32 iwl_expected_tpt_b[IWL_RATE_COUNT] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 7, 13, 35, 58
+static s32 iwl3945_expected_tpt_b[IWL_RATE_COUNT] = {
+ 7, 13, 35, 58, 0, 0, 0, 0, 0, 0, 0, 0
};
-struct iwl_tpt_entry {
+struct iwl3945_tpt_entry {
s8 min_rssi;
u8 index;
};
-static struct iwl_tpt_entry iwl_tpt_table_a[] = {
+static struct iwl3945_tpt_entry iwl3945_tpt_table_a[] = {
{-60, IWL_RATE_54M_INDEX},
{-64, IWL_RATE_48M_INDEX},
{-72, IWL_RATE_36M_INDEX},
{-89, IWL_RATE_6M_INDEX}
};
-static struct iwl_tpt_entry iwl_tpt_table_b[] = {
- {-86, IWL_RATE_11M_INDEX},
- {-88, IWL_RATE_5M_INDEX},
- {-90, IWL_RATE_2M_INDEX},
- {-92, IWL_RATE_1M_INDEX}
-
-};
-
-static struct iwl_tpt_entry iwl_tpt_table_g[] = {
+static struct iwl3945_tpt_entry iwl3945_tpt_table_g[] = {
{-60, IWL_RATE_54M_INDEX},
{-64, IWL_RATE_48M_INDEX},
{-68, IWL_RATE_36M_INDEX},
#define IWL_RATE_MIN_SUCCESS_TH 8
#define IWL_RATE_DECREASE_TH 1920
-static u8 iwl_get_rate_index_by_rssi(s32 rssi, u8 mode)
+static u8 iwl3945_get_rate_index_by_rssi(s32 rssi, enum ieee80211_band band)
{
u32 index = 0;
u32 table_size = 0;
- struct iwl_tpt_entry *tpt_table = NULL;
+ struct iwl3945_tpt_entry *tpt_table = NULL;
if ((rssi < IWL_MIN_RSSI_VAL) || (rssi > IWL_MAX_RSSI_VAL))
rssi = IWL_MIN_RSSI_VAL;
- switch (mode) {
- case MODE_IEEE80211G:
- tpt_table = iwl_tpt_table_g;
- table_size = ARRAY_SIZE(iwl_tpt_table_g);
+ switch (band) {
+ case IEEE80211_BAND_2GHZ:
+ tpt_table = iwl3945_tpt_table_g;
+ table_size = ARRAY_SIZE(iwl3945_tpt_table_g);
break;
- case MODE_IEEE80211A:
- tpt_table = iwl_tpt_table_a;
- table_size = ARRAY_SIZE(iwl_tpt_table_a);
+ case IEEE80211_BAND_5GHZ:
+ tpt_table = iwl3945_tpt_table_a;
+ table_size = ARRAY_SIZE(iwl3945_tpt_table_a);
break;
default:
- case MODE_IEEE80211B:
- tpt_table = iwl_tpt_table_b;
- table_size = ARRAY_SIZE(iwl_tpt_table_b);
+ BUG();
break;
}
return tpt_table[index].index;
}
-static void iwl_clear_window(struct iwl_rate_scale_data *window)
+static void iwl3945_clear_window(struct iwl3945_rate_scale_data *window)
{
window->data = 0;
window->success_counter = 0;
- window->success_ratio = IWL_INVALID_VALUE;
+ window->success_ratio = -1;
window->counter = 0;
- window->average_tpt = IWL_INVALID_VALUE;
+ window->average_tpt = IWL_INV_TPT;
window->stamp = 0;
}
/**
- * iwl_rate_scale_flush_windows - flush out the rate scale windows
+ * iwl3945_rate_scale_flush_windows - flush out the rate scale windows
*
* Returns the number of windows that have gathered data but were
* not flushed. If there were any that were not flushed, then
* reschedule the rate flushing routine.
*/
-static int iwl_rate_scale_flush_windows(struct iwl_rate_scale_priv *rs_priv)
+static int iwl3945_rate_scale_flush_windows(struct iwl3945_rs_sta *rs_sta)
{
int unflushed = 0;
int i;
* since we flushed, clear out the gathered statistics
*/
for (i = 0; i < IWL_RATE_COUNT; i++) {
- if (!rs_priv->win[i].counter)
+ if (!rs_sta->win[i].counter)
continue;
- spin_lock_irqsave(&rs_priv->lock, flags);
- if (time_after(jiffies, rs_priv->win[i].stamp +
+ spin_lock_irqsave(&rs_sta->lock, flags);
+ if (time_after(jiffies, rs_sta->win[i].stamp +
IWL_RATE_WIN_FLUSH)) {
IWL_DEBUG_RATE("flushing %d samples of rate "
"index %d\n",
- rs_priv->win[i].counter, i);
- iwl_clear_window(&rs_priv->win[i]);
+ rs_sta->win[i].counter, i);
+ iwl3945_clear_window(&rs_sta->win[i]);
} else
unflushed++;
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
}
return unflushed;
#define IWL_RATE_FLUSH_MAX 5000 /* msec */
#define IWL_RATE_FLUSH_MIN 50 /* msec */
-static void iwl_bg_rate_scale_flush(unsigned long data)
+static void iwl3945_bg_rate_scale_flush(unsigned long data)
{
- struct iwl_rate_scale_priv *rs_priv = (void *)data;
+ struct iwl3945_rs_sta *rs_sta = (void *)data;
int unflushed = 0;
unsigned long flags;
u32 packet_count, duration, pps;
IWL_DEBUG_RATE("enter\n");
- unflushed = iwl_rate_scale_flush_windows(rs_priv);
+ unflushed = iwl3945_rate_scale_flush_windows(rs_sta);
- spin_lock_irqsave(&rs_priv->lock, flags);
+ spin_lock_irqsave(&rs_sta->lock, flags);
- rs_priv->flush_pending = 0;
+ rs_sta->flush_pending = 0;
/* Number of packets Rx'd since last time this timer ran */
- packet_count = (rs_priv->tx_packets - rs_priv->last_tx_packets) + 1;
+ packet_count = (rs_sta->tx_packets - rs_sta->last_tx_packets) + 1;
- rs_priv->last_tx_packets = rs_priv->tx_packets + 1;
+ rs_sta->last_tx_packets = rs_sta->tx_packets + 1;
if (unflushed) {
duration =
- jiffies_to_msecs(jiffies - rs_priv->last_partial_flush);
-/* duration = jiffies_to_msecs(rs_priv->flush_time); */
+ jiffies_to_msecs(jiffies - rs_sta->last_partial_flush);
+/* duration = jiffies_to_msecs(rs_sta->flush_time); */
IWL_DEBUG_RATE("Tx'd %d packets in %dms\n",
packet_count, duration);
} else
duration = IWL_RATE_FLUSH_MAX;
- rs_priv->flush_time = msecs_to_jiffies(duration);
+ rs_sta->flush_time = msecs_to_jiffies(duration);
IWL_DEBUG_RATE("new flush period: %d msec ave %d\n",
duration, packet_count);
- mod_timer(&rs_priv->rate_scale_flush, jiffies +
- rs_priv->flush_time);
+ mod_timer(&rs_sta->rate_scale_flush, jiffies +
+ rs_sta->flush_time);
- rs_priv->last_partial_flush = jiffies;
+ rs_sta->last_partial_flush = jiffies;
}
/* If there weren't any unflushed entries, we don't schedule the timer
* to run again */
- rs_priv->last_flush = jiffies;
+ rs_sta->last_flush = jiffies;
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
IWL_DEBUG_RATE("leave\n");
}
/**
- * iwl_collect_tx_data - Update the success/failure sliding window
+ * iwl3945_collect_tx_data - Update the success/failure sliding window
*
* We keep a sliding window of the last 64 packets transmitted
* at this rate. window->data contains the bitmask of successful
* packets.
*/
-static void iwl_collect_tx_data(struct iwl_rate_scale_priv *rs_priv,
- struct iwl_rate_scale_data *window,
+static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta,
+ struct iwl3945_rate_scale_data *window,
int success, int retries)
{
unsigned long flags;
}
while (retries--) {
- spin_lock_irqsave(&rs_priv->lock, flags);
+ spin_lock_irqsave(&rs_sta->lock, flags);
/* If we have filled up the window then subtract one from the
* success counter if the high-bit is counting toward
/* Tag this window as having been updated */
window->stamp = jiffies;
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
}
}
* after assoc.. */
for (i = IWL_RATE_COUNT - 1; i >= 0; i--) {
- if (sta->supp_rates & (1 << i)) {
- sta->txrate = i;
+ if (sta->supp_rates[local->hw.conf.channel->band] & (1 << i)) {
+ sta->txrate_idx = i;
break;
}
}
- sta->last_txrate = sta->txrate;
+ sta->last_txrate_idx = sta->txrate_idx;
+
+ /* For 5 GHz band it start at IWL_FIRST_OFDM_RATE */
+ if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
+ sta->last_txrate_idx += IWL_FIRST_OFDM_RATE;
IWL_DEBUG_RATE("leave\n");
}
return local->hw.priv;
}
-/* rate scale requires free function to be implmented */
+/* rate scale requires free function to be implemented */
static void rs_free(void *priv)
{
return;
static void *rs_alloc_sta(void *priv, gfp_t gfp)
{
- struct iwl_rate_scale_priv *rs_priv;
+ struct iwl3945_rs_sta *rs_sta;
int i;
IWL_DEBUG_RATE("enter\n");
- rs_priv = kzalloc(sizeof(struct iwl_rate_scale_priv), gfp);
- if (!rs_priv) {
+ rs_sta = kzalloc(sizeof(struct iwl3945_rs_sta), gfp);
+ if (!rs_sta) {
IWL_DEBUG_RATE("leave: ENOMEM\n");
return NULL;
}
- spin_lock_init(&rs_priv->lock);
+ spin_lock_init(&rs_sta->lock);
- rs_priv->start_rate = IWL_RATE_INVALID;
+ rs_sta->start_rate = IWL_RATE_INVALID;
/* default to just 802.11b */
- rs_priv->expected_tpt = iwl_expected_tpt_b;
+ rs_sta->expected_tpt = iwl3945_expected_tpt_b;
- rs_priv->last_partial_flush = jiffies;
- rs_priv->last_flush = jiffies;
- rs_priv->flush_time = IWL_RATE_FLUSH;
- rs_priv->last_tx_packets = 0;
- rs_priv->ibss_sta_added = 0;
+ rs_sta->last_partial_flush = jiffies;
+ rs_sta->last_flush = jiffies;
+ rs_sta->flush_time = IWL_RATE_FLUSH;
+ rs_sta->last_tx_packets = 0;
+ rs_sta->ibss_sta_added = 0;
- init_timer(&rs_priv->rate_scale_flush);
- rs_priv->rate_scale_flush.data = (unsigned long)rs_priv;
- rs_priv->rate_scale_flush.function = &iwl_bg_rate_scale_flush;
+ init_timer(&rs_sta->rate_scale_flush);
+ 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++)
- iwl_clear_window(&rs_priv->win[i]);
+ iwl3945_clear_window(&rs_sta->win[i]);
IWL_DEBUG_RATE("leave\n");
- return rs_priv;
+ return rs_sta;
}
static void rs_free_sta(void *priv, void *priv_sta)
{
- struct iwl_rate_scale_priv *rs_priv = priv_sta;
+ struct iwl3945_rs_sta *rs_sta = priv_sta;
IWL_DEBUG_RATE("enter\n");
- del_timer_sync(&rs_priv->rate_scale_flush);
- kfree(rs_priv);
+ del_timer_sync(&rs_sta->rate_scale_flush);
+ kfree(rs_sta);
IWL_DEBUG_RATE("leave\n");
}
+
+/*
+ * get ieee prev rate from rate scale table.
+ * for A and B mode we need to overright prev
+ * value
+ */
+static int rs_adjust_next_rate(struct iwl3945_priv *priv, int rate)
+{
+ int next_rate = iwl3945_get_prev_ieee_rate(rate);
+
+ switch (priv->band) {
+ case IEEE80211_BAND_5GHZ:
+ if (rate == IWL_RATE_12M_INDEX)
+ next_rate = IWL_RATE_9M_INDEX;
+ else if (rate == IWL_RATE_6M_INDEX)
+ next_rate = IWL_RATE_6M_INDEX;
+ break;
+/* XXX cannot be invoked in current mac80211 so not a regression
+ case MODE_IEEE80211B:
+ if (rate == IWL_RATE_11M_INDEX_TABLE)
+ next_rate = IWL_RATE_5M_INDEX_TABLE;
+ break;
+ */
+ default:
+ break;
+ }
+
+ return next_rate;
+}
/**
* rs_tx_status - Update rate control values based on Tx results
*
- * NOTE: Uses iwl_priv->retry_rate for the # of retries attempted by
+ * NOTE: Uses iwl3945_priv->retry_rate for the # of retries attempted by
* the hardware for each rate.
*/
static void rs_tx_status(void *priv_rate,
unsigned long flags;
struct sta_info *sta;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
+ struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iwl_rate_scale_priv *rs_priv;
+ struct iwl3945_rs_sta *rs_sta;
+ struct ieee80211_supported_band *sband;
IWL_DEBUG_RATE("enter\n");
- retries = tx_resp->retry_count;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
- first_index = tx_resp->control.tx_rate;
+ retries = tx_resp->retry_count;
+ first_index = tx_resp->control.tx_rate->hw_value;
if ((first_index < 0) || (first_index >= IWL_RATE_COUNT)) {
- IWL_DEBUG_RATE("leave: Rate out of bounds: %0x for %d\n",
- tx_resp->control.tx_rate, first_index);
+ IWL_DEBUG_RATE("leave: Rate out of bounds: %d\n", first_index);
return;
}
+ rcu_read_lock();
+
sta = sta_info_get(local, hdr->addr1);
if (!sta || !sta->rate_ctrl_priv) {
- if (sta)
- sta_info_put(sta);
+ rcu_read_unlock();
IWL_DEBUG_RATE("leave: No STA priv data to update!\n");
return;
}
- rs_priv = (void *)sta->rate_ctrl_priv;
+ rs_sta = (void *)sta->rate_ctrl_priv;
- rs_priv->tx_packets++;
+ rs_sta->tx_packets++;
scale_rate_index = first_index;
last_index = first_index;
last_index = scale_rate_index;
} else {
current_count = priv->retry_rate;
- last_index = iwl_get_prev_ieee_rate(scale_rate_index);
+ last_index = rs_adjust_next_rate(priv,
+ scale_rate_index);
}
/* Update this rate accounting for as many retries
* as was used for it (per current_count) */
- iwl_collect_tx_data(rs_priv,
- &rs_priv->win[scale_rate_index],
+ iwl3945_collect_tx_data(rs_sta,
+ &rs_sta->win[scale_rate_index],
0, current_count);
IWL_DEBUG_RATE("Update rate %d for %d retries.\n",
scale_rate_index, current_count);
if (retries)
scale_rate_index =
- iwl_get_prev_ieee_rate(scale_rate_index);
+ rs_adjust_next_rate(priv, scale_rate_index);
}
+
/* Update the last index window with success/failure based on ACK */
IWL_DEBUG_RATE("Update rate %d with %s.\n",
last_index,
(tx_resp->flags & IEEE80211_TX_STATUS_ACK) ?
"success" : "failure");
- iwl_collect_tx_data(rs_priv,
- &rs_priv->win[last_index],
+ iwl3945_collect_tx_data(rs_sta,
+ &rs_sta->win[last_index],
tx_resp->flags & IEEE80211_TX_STATUS_ACK, 1);
/* We updated the rate scale window -- if its been more than
* flush_time since the last run, schedule the flush
* again */
- spin_lock_irqsave(&rs_priv->lock, flags);
+ spin_lock_irqsave(&rs_sta->lock, flags);
- if (!rs_priv->flush_pending &&
- time_after(jiffies, rs_priv->last_partial_flush +
- rs_priv->flush_time)) {
+ if (!rs_sta->flush_pending &&
+ time_after(jiffies, rs_sta->last_partial_flush +
+ rs_sta->flush_time)) {
- rs_priv->flush_pending = 1;
- mod_timer(&rs_priv->rate_scale_flush,
- jiffies + rs_priv->flush_time);
+ rs_sta->flush_pending = 1;
+ mod_timer(&rs_sta->rate_scale_flush,
+ jiffies + rs_sta->flush_time);
}
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
- sta_info_put(sta);
+ rcu_read_unlock();
IWL_DEBUG_RATE("leave\n");
return;
}
-static struct ieee80211_rate *iwl_get_lowest_rate(struct ieee80211_local
- *local)
-{
- struct ieee80211_hw_mode *mode = local->oper_hw_mode;
- int i;
-
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
-
- if (rate->flags & IEEE80211_RATE_SUPPORTED)
- return rate;
- }
-
- return &mode->rates[0];
-}
-
-static u16 iwl_get_adjacent_rate(struct iwl_rate_scale_priv *rs_priv,
- u8 index, u16 rate_mask, int phymode)
+static u16 iwl3945_get_adjacent_rate(struct iwl3945_rs_sta *rs_sta,
+ u8 index, u16 rate_mask, enum ieee80211_band band)
{
u8 high = IWL_RATE_INVALID;
u8 low = IWL_RATE_INVALID;
- /* 802.11A walks to the next literal adjascent rate in
+ /* 802.11A walks to the next literal adjacent rate in
* the rate table */
- if (unlikely(phymode == MODE_IEEE80211A)) {
+ if (unlikely(band == IEEE80211_BAND_5GHZ)) {
int i;
u32 mask;
low = index;
while (low != IWL_RATE_INVALID) {
- if (rs_priv->tgg)
- low = iwl_rates[low].prev_rs_tgg;
+ if (rs_sta->tgg)
+ low = iwl3945_rates[low].prev_rs_tgg;
else
- low = iwl_rates[low].prev_rs;
+ low = iwl3945_rates[low].prev_rs;
if (low == IWL_RATE_INVALID)
break;
if (rate_mask & (1 << low))
high = index;
while (high != IWL_RATE_INVALID) {
- if (rs_priv->tgg)
- high = iwl_rates[high].next_rs_tgg;
+ if (rs_sta->tgg)
+ high = iwl3945_rates[high].next_rs_tgg;
else
- high = iwl_rates[high].next_rs;
+ high = iwl3945_rates[high].next_rs;
if (high == IWL_RATE_INVALID)
break;
if (rate_mask & (1 << high))
* rate table and must reference the driver allocated rate table
*
*/
-static struct ieee80211_rate *rs_get_rate(void *priv_rate,
- struct net_device *dev,
- struct sk_buff *skb,
- struct rate_control_extra *extra)
+static void rs_get_rate(void *priv_rate, struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel)
{
u8 low = IWL_RATE_INVALID;
u8 high = IWL_RATE_INVALID;
u16 high_low;
int index;
- struct iwl_rate_scale_priv *rs_priv;
- struct iwl_rate_scale_data *window = NULL;
- int current_tpt = IWL_INVALID_VALUE;
- int low_tpt = IWL_INVALID_VALUE;
- int high_tpt = IWL_INVALID_VALUE;
+ struct iwl3945_rs_sta *rs_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;
u32 fail_count;
s8 scale_action = 0;
unsigned long flags;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct sta_info *sta;
u16 fc, rate_mask;
- struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
+ struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
DECLARE_MAC_BUF(mac);
IWL_DEBUG_RATE("enter\n");
- memset(extra, 0, sizeof(*extra));
-
- fc = le16_to_cpu(hdr->frame_control);
- if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
- (is_multicast_ether_addr(hdr->addr1))) {
- /* Send management frames and broadcast/multicast data using
- * lowest rate. */
- /* TODO: this could probably be improved.. */
- IWL_DEBUG_RATE("leave: lowest rate (not data or is "
- "multicast)\n");
-
- return iwl_get_lowest_rate(local);
- }
+ rcu_read_lock();
sta = sta_info_get(local, hdr->addr1);
- if (!sta || !sta->rate_ctrl_priv) {
+
+ /* Send management frames and broadcast/multicast data using lowest
+ * rate. */
+ fc = le16_to_cpu(hdr->frame_control);
+ if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+ is_multicast_ether_addr(hdr->addr1) ||
+ !sta || !sta->rate_ctrl_priv) {
IWL_DEBUG_RATE("leave: No STA priv data to update!\n");
- if (sta)
- sta_info_put(sta);
- return NULL;
+ sel->rate = rate_lowest(local, sband, sta);
+ rcu_read_unlock();
+ return;
}
- rate_mask = sta->supp_rates;
- index = min(sta->txrate & 0xffff, IWL_RATE_COUNT - 1);
+ rate_mask = sta->supp_rates[sband->band];
+ index = min(sta->last_txrate_idx & 0xffff, IWL_RATE_COUNT - 1);
- rs_priv = (void *)sta->rate_ctrl_priv;
+ if (sband->band == IEEE80211_BAND_5GHZ)
+ rate_mask = rate_mask << IWL_FIRST_OFDM_RATE;
+
+ rs_sta = (void *)sta->rate_ctrl_priv;
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
- !rs_priv->ibss_sta_added) {
- u8 sta_id = iwl_hw_find_station(priv, hdr->addr1);
+ !rs_sta->ibss_sta_added) {
+ u8 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
if (sta_id == IWL_INVALID_STATION) {
IWL_DEBUG_RATE("LQ: ADD station %s\n",
print_mac(mac, hdr->addr1));
- sta_id = iwl_add_station(priv,
+ sta_id = iwl3945_add_station(priv,
hdr->addr1, 0, CMD_ASYNC);
}
if (sta_id != IWL_INVALID_STATION)
- rs_priv->ibss_sta_added = 1;
+ rs_sta->ibss_sta_added = 1;
}
- spin_lock_irqsave(&rs_priv->lock, flags);
+ spin_lock_irqsave(&rs_sta->lock, flags);
- if (rs_priv->start_rate != IWL_RATE_INVALID) {
- index = rs_priv->start_rate;
- rs_priv->start_rate = IWL_RATE_INVALID;
+ if (rs_sta->start_rate != IWL_RATE_INVALID) {
+ index = rs_sta->start_rate;
+ rs_sta->start_rate = IWL_RATE_INVALID;
}
- window = &(rs_priv->win[index]);
+ window = &(rs_sta->win[index]);
fail_count = window->counter - window->success_counter;
if (((fail_count <= IWL_RATE_MIN_FAILURE_TH) &&
(window->success_counter < IWL_RATE_MIN_SUCCESS_TH))) {
- window->average_tpt = IWL_INVALID_VALUE;
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ window->average_tpt = IWL_INV_TPT;
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
IWL_DEBUG_RATE("Invalid average_tpt on rate %d: "
"counter: %d, success_counter: %d, "
index,
window->counter,
window->success_counter,
- rs_priv->expected_tpt ? "not " : "");
+ rs_sta->expected_tpt ? "not " : "");
goto out;
}
window->average_tpt = ((window->success_ratio *
- rs_priv->expected_tpt[index] + 64) / 128);
+ rs_sta->expected_tpt[index] + 64) / 128);
current_tpt = window->average_tpt;
- high_low = iwl_get_adjacent_rate(rs_priv, index, rate_mask,
- local->hw.conf.phymode);
+ high_low = iwl3945_get_adjacent_rate(rs_sta, index, rate_mask,
+ sband->band);
low = high_low & 0xff;
high = (high_low >> 8) & 0xff;
if (low != IWL_RATE_INVALID)
- low_tpt = rs_priv->win[low].average_tpt;
+ low_tpt = rs_sta->win[low].average_tpt;
if (high != IWL_RATE_INVALID)
- high_tpt = rs_priv->win[high].average_tpt;
+ high_tpt = rs_sta->win[high].average_tpt;
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
scale_action = 1;
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_INVALID_VALUE) &&
- (high_tpt == IWL_INVALID_VALUE))
+ } else if ((low_tpt == IWL_INV_TPT) && (high_tpt == IWL_INV_TPT))
scale_action = 1;
- else if ((low_tpt != IWL_INVALID_VALUE) &&
- (high_tpt != IWL_INVALID_VALUE)
- && (low_tpt < current_tpt)
- && (high_tpt < current_tpt)) {
+ else if ((low_tpt != IWL_INV_TPT) && (high_tpt != IWL_INV_TPT) &&
+ (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_INVALID_VALUE) {
+ if (high_tpt != IWL_INV_TPT) {
if (high_tpt > current_tpt)
scale_action = 1;
else {
("decrease rate because of high tpt\n");
scale_action = -1;
}
- } else if (low_tpt != IWL_INVALID_VALUE) {
+ } else if (low_tpt != IWL_INV_TPT) {
if (low_tpt > current_tpt) {
IWL_DEBUG_RATE
("decrease rate because of low tpt\n");
out:
- sta->last_txrate = index;
- sta->txrate = sta->last_txrate;
- sta_info_put(sta);
+ sta->last_txrate_idx = index;
+ if (sband->band == IEEE80211_BAND_5GHZ)
+ sta->txrate_idx = sta->last_txrate_idx - IWL_FIRST_OFDM_RATE;
+ else
+ sta->txrate_idx = sta->last_txrate_idx;
+
+ rcu_read_unlock();
IWL_DEBUG_RATE("leave: %d\n", index);
- return &priv->ieee_rates[index];
+ sel->rate = &sband->bitrates[sta->txrate_idx];
}
static struct rate_control_ops rs_ops = {
.free_sta = rs_free_sta,
};
-int iwl_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
+int iwl3945_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
{
struct ieee80211_local *local = hw_to_local(hw);
- struct iwl_priv *priv = hw->priv;
- struct iwl_rate_scale_priv *rs_priv;
+ struct iwl3945_priv *priv = hw->priv;
+ struct iwl3945_rs_sta *rs_sta;
struct sta_info *sta;
unsigned long flags;
int count = 0, i;
unsigned long now = jiffies;
u32 max_time = 0;
+ rcu_read_lock();
+
sta = sta_info_get(local, priv->stations[sta_id].sta.sta.addr);
if (!sta || !sta->rate_ctrl_priv) {
- if (sta) {
- sta_info_put(sta);
+ if (sta)
IWL_DEBUG_RATE("leave - no private rate data!\n");
- } else
+ else
IWL_DEBUG_RATE("leave - no station!\n");
+ rcu_read_unlock();
return sprintf(buf, "station %d not found\n", sta_id);
}
- rs_priv = (void *)sta->rate_ctrl_priv;
- spin_lock_irqsave(&rs_priv->lock, flags);
+ rs_sta = (void *)sta->rate_ctrl_priv;
+ spin_lock_irqsave(&rs_sta->lock, flags);
i = IWL_RATE_54M_INDEX;
while (1) {
u64 mask;
int j;
count +=
- sprintf(&buf[count], " %2dMbs: ", iwl_rates[i].ieee / 2);
+ sprintf(&buf[count], " %2dMbs: ", iwl3945_rates[i].ieee / 2);
mask = (1ULL << (IWL_RATE_MAX_WINDOW - 1));
for (j = 0; j < IWL_RATE_MAX_WINDOW; j++, mask >>= 1)
buf[count++] =
- (rs_priv->win[i].data & mask) ? '1' : '0';
+ (rs_sta->win[i].data & mask) ? '1' : '0';
- samples += rs_priv->win[i].counter;
- good += rs_priv->win[i].success_counter;
- success += rs_priv->win[i].success_counter * iwl_rates[i].ieee;
+ samples += rs_sta->win[i].counter;
+ good += rs_sta->win[i].success_counter;
+ success += rs_sta->win[i].success_counter *
+ iwl3945_rates[i].ieee;
- if (rs_priv->win[i].stamp) {
+ if (rs_sta->win[i].stamp) {
int delta =
- jiffies_to_msecs(now - rs_priv->win[i].stamp);
+ jiffies_to_msecs(now - rs_sta->win[i].stamp);
if (delta > max_time)
max_time = delta;
} else
buf[count++] = '\n';
- j = iwl_get_prev_ieee_rate(i);
+ j = iwl3945_get_prev_ieee_rate(i);
if (j == i)
break;
i = j;
}
- spin_unlock_irqrestore(&rs_priv->lock, flags);
- sta_info_put(sta);
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
+ rcu_read_unlock();
/* Display the average rate of all samples taken.
*
* NOTE: We multiple # of samples by 2 since the IEEE measurement
- * added from iwl_rates is actually 2X the rate */
+ * added from iwl3945_rates is actually 2X the rate */
if (samples)
count += sprintf(
&buf[count],
return count;
}
-void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
+void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
{
- struct iwl_priv *priv = hw->priv;
+ struct iwl3945_priv *priv = hw->priv;
s32 rssi = 0;
unsigned long flags;
struct ieee80211_local *local = hw_to_local(hw);
- struct iwl_rate_scale_priv *rs_priv;
+ struct iwl3945_rs_sta *rs_sta;
struct sta_info *sta;
IWL_DEBUG_RATE("enter\n");
return;
}
+ rcu_read_lock();
+
sta = sta_info_get(local, priv->stations[sta_id].sta.sta.addr);
if (!sta || !sta->rate_ctrl_priv) {
- if (sta)
- sta_info_put(sta);
IWL_DEBUG_RATE("leave - no private rate data!\n");
+ rcu_read_unlock();
return;
}
- rs_priv = (void *)sta->rate_ctrl_priv;
+ rs_sta = (void *)sta->rate_ctrl_priv;
- spin_lock_irqsave(&rs_priv->lock, flags);
+ spin_lock_irqsave(&rs_sta->lock, flags);
- rs_priv->tgg = 0;
- switch (priv->phymode) {
- case MODE_IEEE80211G:
+ rs_sta->tgg = 0;
+ 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) {
- rs_priv->tgg = 1;
- rs_priv->expected_tpt = iwl_expected_tpt_g_prot;
+ rs_sta->tgg = 1;
+ rs_sta->expected_tpt = iwl3945_expected_tpt_g_prot;
} else
- rs_priv->expected_tpt = iwl_expected_tpt_g;
+ rs_sta->expected_tpt = iwl3945_expected_tpt_g;
break;
- case MODE_IEEE80211A:
- rs_priv->expected_tpt = iwl_expected_tpt_a;
+ case IEEE80211_BAND_5GHZ:
+ rs_sta->expected_tpt = iwl3945_expected_tpt_a;
break;
-
- default:
- IWL_WARNING("Invalid phymode. Defaulting to 802.11b\n");
- case MODE_IEEE80211B:
- rs_priv->expected_tpt = iwl_expected_tpt_b;
+ case IEEE80211_NUM_BANDS:
+ BUG();
break;
}
- sta_info_put(sta);
- spin_unlock_irqrestore(&rs_priv->lock, flags);
+ rcu_read_unlock();
+ spin_unlock_irqrestore(&rs_sta->lock, flags);
rssi = priv->last_rx_rssi;
if (rssi == 0)
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RATE, "Network RSSI: %d\n", rssi);
- rs_priv->start_rate = iwl_get_rate_index_by_rssi(rssi, priv->phymode);
+ rs_sta->start_rate = iwl3945_get_rate_index_by_rssi(rssi, priv->band);
IWL_DEBUG_RATE("leave: rssi %d assign rate index: "
- "%d (plcp 0x%x)\n", rssi, rs_priv->start_rate,
- iwl_rates[rs_priv->start_rate].plcp);
+ "%d (plcp 0x%x)\n", rssi, rs_sta->start_rate,
+ iwl3945_rates[rs_sta->start_rate].plcp);
}
-void iwl_rate_control_register(struct ieee80211_hw *hw)
+int iwl3945_rate_control_register(void)
{
- ieee80211_rate_control_register(&rs_ops);
+ return ieee80211_rate_control_register(&rs_ops);
}
-void iwl_rate_control_unregister(struct ieee80211_hw *hw)
+void iwl3945_rate_control_unregister(void)
{
ieee80211_rate_control_unregister(&rs_ops);
}
projects / linux-2.6-omap-h63xx.git / blobdiff