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authorRajkumar Manoharan <rmanohar@qca.qualcomm.com>2011-09-29 19:04:04 +0400
committerJohn W. Linville <linville@tuxdriver.com>2011-10-03 23:22:32 +0400
commitb6f35301efda5e94342cfcca9e29b7b3e9a5f827 (patch)
treef828168204f52f423a7d1b160b9f371c0fd94dc1 /net/mac80211/mlme.c
parente209c5a7ed1870ab7f112ad47083b5d616e8b6a4 (diff)
downloadlinux-b6f35301efda5e94342cfcca9e29b7b3e9a5f827.tar.xz
mac80211: Send nullfunc frames at lower rate during connection monitor
Recently mac80211 was changed to use nullfunc instead of probe request for connection monitoring for tx ack status reporting hardwares. Sometimes in congested network, STA got disconnected quickly after the association. It was observered that the rate control was not adopted to environment due to minimal transmission. As the nullfunc are used for monitoring purpose, these frames should not be sacrificed for rate control updation. So it is better to send the monitoring null func frames at minimum rate that could help to retain the connection. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index c4e8901c96f6..0e5d8daba1ee 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -348,6 +348,7 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
{
struct sk_buff *skb;
struct ieee80211_hdr_3addr *nullfunc;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
if (!skb)
@@ -358,6 +359,10 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL))
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
+
ieee80211_tx_skb(sdata, skb);
}