Commit fa254a68 authored by Tomas Winkler's avatar Tomas Winkler Committed by David S. Miller
Browse files

iwlwifi: 3954 renames iwl3945_rate_scale_priv to iwl3945_rs_sta



This patch renames iwl3945_rate_scale_priv to iwl3945_rs_sta as it
better represents the purpose of this variable.
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c33104f0
......@@ -52,7 +52,7 @@ struct iwl3945_rate_scale_data {
unsigned long stamp;
};
struct iwl3945_rate_scale_priv {
struct iwl3945_rs_sta {
spinlock_t lock;
s32 *expected_tpt;
unsigned long last_partial_flush;
......@@ -181,7 +181,7 @@ static void iwl3945_clear_window(struct iwl3945_rate_scale_data *window)
* not flushed. If there were any that were not flushed, then
* reschedule the rate flushing routine.
*/
static int iwl3945_rate_scale_flush_windows(struct iwl3945_rate_scale_priv *rs_priv)
static int iwl3945_rate_scale_flush_windows(struct iwl3945_rs_sta *rs_sta)
{
int unflushed = 0;
int i;
......@@ -193,19 +193,19 @@ static int iwl3945_rate_scale_flush_windows(struct iwl3945_rate_scale_priv *rs_p
* 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);
iwl3945_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;
......@@ -216,28 +216,28 @@ static int iwl3945_rate_scale_flush_windows(struct iwl3945_rate_scale_priv *rs_p
static void iwl3945_bg_rate_scale_flush(unsigned long data)
{
struct iwl3945_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 = iwl3945_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);
......@@ -255,23 +255,23 @@ static void iwl3945_bg_rate_scale_flush(unsigned long data)
} 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");
}
......@@ -283,7 +283,7 @@ static void iwl3945_bg_rate_scale_flush(unsigned long data)
* at this rate. window->data contains the bitmask of successful
* packets.
*/
static void iwl3945_collect_tx_data(struct iwl3945_rate_scale_priv *rs_priv,
static void iwl3945_collect_tx_data(struct iwl3945_rs_sta *rs_sta,
struct iwl3945_rate_scale_data *window,
int success, int retries)
{
......@@ -295,7 +295,7 @@ static void iwl3945_collect_tx_data(struct iwl3945_rate_scale_priv *rs_priv,
}
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
......@@ -323,7 +323,7 @@ static void iwl3945_collect_tx_data(struct iwl3945_rate_scale_priv *rs_priv,
/* Tag this window as having been updated */
window->stamp = jiffies;
spin_unlock_irqrestore(&rs_priv->lock, flags);
spin_unlock_irqrestore(&rs_sta->lock, flags);
}
}
......@@ -373,49 +373,49 @@ static void rs_clear(void *priv)
static void *rs_alloc_sta(void *priv, gfp_t gfp)
{
struct iwl3945_rate_scale_priv *rs_priv;
struct iwl3945_rs_sta *rs_sta;
int i;
IWL_DEBUG_RATE("enter\n");
rs_priv = kzalloc(sizeof(struct iwl3945_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 = iwl3945_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 = &iwl3945_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++)
iwl3945_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 iwl3945_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");
}
......@@ -464,7 +464,7 @@ static void rs_tx_status(void *priv_rate,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct iwl3945_rate_scale_priv *rs_priv;
struct iwl3945_rs_sta *rs_sta;
IWL_DEBUG_RATE("enter\n");
......@@ -485,9 +485,9 @@ static void rs_tx_status(void *priv_rate,
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;
......@@ -514,8 +514,8 @@ static void rs_tx_status(void *priv_rate,
/* Update this rate accounting for as many retries
* as was used for it (per current_count) */
iwl3945_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);
......@@ -533,25 +533,25 @@ static void rs_tx_status(void *priv_rate,
last_index,
(tx_resp->flags & IEEE80211_TX_STATUS_ACK) ?
"success" : "failure");
iwl3945_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);
......@@ -560,8 +560,8 @@ static void rs_tx_status(void *priv_rate,
return;
}
static u16 iwl3945_get_adjacent_rate(struct iwl3945_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, int phymode)
{
u8 high = IWL_RATE_INVALID;
u8 low = IWL_RATE_INVALID;
......@@ -595,7 +595,7 @@ static u16 iwl3945_get_adjacent_rate(struct iwl3945_rate_scale_priv *rs_priv,
low = index;
while (low != IWL_RATE_INVALID) {
if (rs_priv->tgg)
if (rs_sta->tgg)
low = iwl3945_rates[low].prev_rs_tgg;
else
low = iwl3945_rates[low].prev_rs;
......@@ -608,7 +608,7 @@ static u16 iwl3945_get_adjacent_rate(struct iwl3945_rate_scale_priv *rs_priv,
high = index;
while (high != IWL_RATE_INVALID) {
if (rs_priv->tgg)
if (rs_sta->tgg)
high = iwl3945_rates[high].next_rs_tgg;
else
high = iwl3945_rates[high].next_rs;
......@@ -646,7 +646,7 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
u8 high = IWL_RATE_INVALID;
u16 high_low;
int index;
struct iwl3945_rate_scale_priv *rs_priv;
struct iwl3945_rs_sta *rs_sta;
struct iwl3945_rate_scale_data *window = NULL;
int current_tpt = IWL_INVALID_VALUE;
int low_tpt = IWL_INVALID_VALUE;
......@@ -684,10 +684,10 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
if (priv->phymode == (u8) MODE_IEEE80211A)
rate_mask = rate_mask << IWL_FIRST_OFDM_RATE;
rs_priv = (void *)sta->rate_ctrl_priv;
rs_sta = (void *)sta->rate_ctrl_priv;
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
!rs_priv->ibss_sta_added) {
!rs_sta->ibss_sta_added) {
u8 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
if (sta_id == IWL_INVALID_STATION) {
......@@ -697,24 +697,24 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
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);
spin_unlock_irqrestore(&rs_sta->lock, flags);
IWL_DEBUG_RATE("Invalid average_tpt on rate %d: "
"counter: %d, success_counter: %d, "
......@@ -722,27 +722,27 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
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 = iwl3945_get_adjacent_rate(rs_priv, index, rate_mask,
high_low = iwl3945_get_adjacent_rate(rs_sta, index, rate_mask,
local->hw.conf.phymode);
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;
......@@ -840,7 +840,7 @@ int iwl3945_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
{
struct ieee80211_local *local = hw_to_local(hw);
struct iwl3945_priv *priv = hw->priv;
struct iwl3945_rate_scale_priv *rs_priv;
struct iwl3945_rs_sta *rs_sta;
struct sta_info *sta;
unsigned long flags;
int count = 0, i;
......@@ -858,8 +858,8 @@ int iwl3945_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
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;
......@@ -871,15 +871,16 @@ int iwl3945_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
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 * iwl3945_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;
......@@ -893,7 +894,7 @@ int iwl3945_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
break;
i = j;
}
spin_unlock_irqrestore(&rs_priv->lock, flags);
spin_unlock_irqrestore(&rs_sta->lock, flags);
sta_info_put(sta);
/* Display the average rate of all samples taken.
......@@ -919,7 +920,7 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
s32 rssi = 0;
unsigned long flags;
struct ieee80211_local *local = hw_to_local(hw);
struct iwl3945_rate_scale_priv *rs_priv;
struct iwl3945_rs_sta *rs_sta;
struct sta_info *sta;
IWL_DEBUG_RATE("enter\n");
......@@ -939,33 +940,33 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
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;
rs_sta->tgg = 0;
switch (priv->phymode) {
case MODE_IEEE80211G:
if (priv->active_rxon.flags & RXON_FLG_TGG_PROTECT_MSK) {
rs_priv->tgg = 1;
rs_priv->expected_tpt = iwl3945_expected_tpt_g_prot;
rs_sta->tgg = 1;
rs_sta->expected_tpt = iwl3945_expected_tpt_g_prot;
} else
rs_priv->expected_tpt = iwl3945_expected_tpt_g;
rs_sta->expected_tpt = iwl3945_expected_tpt_g;
break;
case MODE_IEEE80211A:
rs_priv->expected_tpt = iwl3945_expected_tpt_a;
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 = iwl3945_expected_tpt_b;
rs_sta->expected_tpt = iwl3945_expected_tpt_b;
break;
}
sta_info_put(sta);
spin_unlock_irqrestore(&rs_priv->lock, flags);
spin_unlock_irqrestore(&rs_sta->lock, flags);
rssi = priv->last_rx_rssi;
if (rssi == 0)
......@@ -973,11 +974,12 @@ void iwl3945_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
IWL_DEBUG(IWL_DL_INFO | IWL_DL_RATE, "Network RSSI: %d\n", rssi);
rs_priv->start_rate = iwl3945_get_rate_index_by_rssi(rssi, priv->phymode);
rs_sta->start_rate =
iwl3945_get_rate_index_by_rssi(rssi, priv->phymode);
IWL_DEBUG_RATE("leave: rssi %d assign rate index: "
"%d (plcp 0x%x)\n", rssi, rs_priv->start_rate,
iwl3945_rates[rs_priv->start_rate].plcp);
"%d (plcp 0x%x)\n", rssi, rs_sta->start_rate,
iwl3945_rates[rs_sta->start_rate].plcp);
}
void iwl3945_rate_control_register(struct ieee80211_hw *hw)
......
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