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mac80211: let flush() drop packets when possible

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When roaming / suspending, it makes no sense to wait until
the transmit queues of the device are empty. In extreme
condition they can be starved (VO saturating the air), but
even in regular cases, it is pointless to delay the roaming
because the low level driver is trying to send packets to
an AP which is far away. We'd rather drop these packets and
let TCP retransmit if needed. This will allow to speed up
the roaming.

For suspend, the explanation is even more trivial.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach
2015-01-07 15:42:39 +02:00
committed by Johannes Berg
parent 0efbb786f1
commit 3b24f4c653
10 changed files with 27 additions and 22 deletions
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4
net/mac80211/ieee80211_i.h
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@@ -1882,10 +1882,10 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
void ieee80211_add_pending_skbs(struct ieee80211_local *local,
struct sk_buff_head *skbs);
void ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
struct ieee80211_sub_if_data *sdata, bool drop);
void __ieee80211_flush_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
unsigned int queues);
unsigned int queues, bool drop);
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg, u16 status,