mac80211: Fix handling of retry count of NO_ACK frames in minstrel

Make the retry count zero (total try count = 1) for frames with
IEEE80211_TX_CTL_NO_ACK set.

Also remove the check for is_multicast_ether_addr in use_low_rate,
which is redundant because all multicasts have IEEE80211_TX_CTL_NO_ACK
set.

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 3824990..5196006 100644 (file)
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -80,8 +80,7 @@ use_low_rate(struct sk_buff *skb)
        fc = le16_to_cpu(hdr->frame_control);
 
        return ((info->flags & IEEE80211_TX_CTL_NO_ACK) ||
-               (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
-               is_multicast_ether_addr(hdr->addr1));
+               (fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA);
 }
 
 
@@ -245,7 +244,10 @@ minstrel_get_rate(void *priv, struct ieee80211_sta *sta,
 
        if (!sta || !mi || use_low_rate(skb)) {
                ar[0].idx = rate_lowest_index(sband, sta);
-               ar[0].count = mp->max_retry;
+               if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+                       ar[0].count = 1;
+               else
+                       ar[0].count = mp->max_retry;
                return;
        }