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>

3 files changed, 35 insertions, 22 deletions

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];