From 2bc454b0b30b3645d114689b64321cb49be99923 Mon Sep 17 00:00:00 2001
From: Michael Wu <flamingice@sourmilk.net>
Date: Tue, 25 Dec 2007 19:33:16 -0500
Subject: [PATCH] mac80211: Fix rate reporting regression
Mattias Nissler's "clean up rate selection" patch incorrectly changes
the behavior of txrate setting in sta_info. This patch backs out parts
of the rate selection consolidation in order to fix this issue for now.
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/iwlwifi/iwl-3945-rs.c | 10 ++++++++--
drivers/net/wireless/iwlwifi/iwl-4965-rs.c | 7 ++++++-
net/mac80211/ieee80211_rate.c | 18 +-----------------
net/mac80211/rc80211_pid_algo.c | 20 +++++++++++++++++---
net/mac80211/rc80211_simple.c | 19 +++++++++++++++++--
5 files changed, 49 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
index 3e812743f6ad..d79f18c41957 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.c
@@ -657,14 +657,20 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct sta_info *sta;
- u16 rate_mask;
+ u16 fc, rate_mask;
struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
DECLARE_MAC_BUF(mac);
IWL_DEBUG_RATE("enter\n");
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");
sel->rate = rate_lowest(local, local->oper_hw_mode, sta);
if (sta)
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
index 229b34199f92..5081e287b129 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
@@ -2017,6 +2017,7 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
struct ieee80211_conf *conf = &local->hw.conf;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct sta_info *sta;
+ u16 fc;
struct iwl4965_priv *priv = (struct iwl4965_priv *)priv_rate;
struct iwl4965_rate_scale_priv *lq;
@@ -2024,7 +2025,11 @@ static void rs_get_rate(void *priv_rate, struct net_device *dev,
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 (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1) ||
+ !sta || !sta->rate_ctrl_priv) {
sel->rate = rate_lowest(local, local->oper_hw_mode, sta);
if (sta)
sta_info_put(sta);
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
index 5676a26a7c75..b957e67c5fba 100644
--- a/net/mac80211/ieee80211_rate.c
+++ b/net/mac80211/ieee80211_rate.c
@@ -168,29 +168,13 @@ void rate_control_get_rate(struct net_device *dev,
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct rate_control_ref *ref = local->rate_ctrl;
- struct ieee80211_sub_if_data *sdata;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct sta_info *sta = sta_info_get(local, hdr->addr1);
int i;
- u16 fc;
memset(sel, 0, sizeof(struct rate_selection));
- /* 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))
- sel->rate = rate_lowest(local, mode, sta);
-
- /* If a forced rate is in effect, select it. */
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
- sel->rate = &mode->rates[sdata->bss->force_unicast_rateidx];
-
- /* If we haven't found the rate yet, ask the rate control algo. */
- if (!sel->rate)
- ref->ops->get_rate(ref->priv, dev, mode, skb, sel);
+ ref->ops->get_rate(ref->priv, dev, mode, skb, sel);
/* Select a non-ERP backup rate. */
if (!sel->nonerp) {
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index 66cae53a647d..962286d893d6 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -310,22 +310,36 @@ static void rate_control_pid_get_rate(void *priv, struct net_device *dev,
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
int rateidx;
+ u16 fc;
sta = sta_info_get(local, hdr->addr1);
- if (!sta) {
- sel->rate = rate_lowest(local, mode, NULL);
- sta_info_put(sta);
+ /* 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) {
+ sel->rate = rate_lowest(local, mode, sta);
+ if (sta)
+ sta_info_put(sta);
return;
}
+ /* If a forced rate is in effect, select it. */
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
+ sta->txrate = sdata->bss->force_unicast_rateidx;
+
rateidx = sta->txrate;
if (rateidx >= mode->num_rates)
rateidx = mode->num_rates - 1;
+ sta->last_txrate = rateidx;
+
sta_info_put(sta);
sel->rate = &mode->rates[rateidx];
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 33de6f967e55..934676d687d6 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -207,21 +207,36 @@ rate_control_simple_get_rate(void *priv, struct net_device *dev,
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
int rateidx;
+ u16 fc;
sta = sta_info_get(local, hdr->addr1);
- if (!sta) {
- sel->rate = rate_lowest(local, mode, NULL);
+ /* 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) {
+ sel->rate = rate_lowest(local, mode, sta);
+ if (sta)
+ sta_info_put(sta);
return;
}
+ /* If a forced rate is in effect, select it. */
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
+ sta->txrate = sdata->bss->force_unicast_rateidx;
+
rateidx = sta->txrate;
if (rateidx >= mode->num_rates)
rateidx = mode->num_rates - 1;
+ sta->last_txrate = rateidx;
+
sta_info_put(sta);
sel->rate = &mode->rates[rateidx];
--
GitLab