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authorVivek Natarajan <vnatarajan@atheros.com>2010-02-08 17:47:01 +0530
committerJohn W. Linville <linville@tuxdriver.com>2010-02-08 16:51:03 -0500
commite15276a4b220c54db665cf46a92bd9ceb9aeb052 (patch)
tree084ec601adeb65532f6c3a6b52cf1dc728065235 /net/mac80211/rx.c
parent209c671db7a917740ab9873d442b10ae7e369937 (diff)
mac80211: Reset dynamic ps timer in Rx path.master-2010-02-08
The current mac80211 implementation enables power save if there is no Tx traffic for a specific timeout. Hence, PS is triggered even if there is a continuous Rx only traffic(like UDP) going on. This makes the drivers to wait on the tim bit in the next beacon to awake which leads to redundant sleep-wake cycles. Fix this by restarting the dynamic ps timer on receiving every data packet. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> CC: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
-rw-r--r--net/mac80211/rx.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 01dba761839..c9755f3d986 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1719,6 +1719,7 @@ static ieee80211_rx_result debug_noinline
ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
{
struct ieee80211_sub_if_data *sdata = rx->sdata;
+ struct ieee80211_local *local = rx->local;
struct net_device *dev = sdata->dev;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
__le16 fc = hdr->frame_control;
@@ -1750,6 +1751,13 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
dev->stats.rx_packets++;
dev->stats.rx_bytes += rx->skb->len;
+ if (ieee80211_is_data(hdr->frame_control) &&
+ !is_multicast_ether_addr(hdr->addr1) &&
+ local->hw.conf.dynamic_ps_timeout > 0 && local->ps_sdata) {
+ mod_timer(&local->dynamic_ps_timer, jiffies +
+ msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));
+ }
+
ieee80211_deliver_skb(rx);
return RX_QUEUED;