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mac80211: avoid duplicate TX path station lookup

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Instead of looking up the destination station twice in the TX path
(first to build the header, and then for control processing), save
it when building the header and use it later in the TX path.

To avoid having to look up the station in the many callers, allow
those to pass %NULL which keeps the existing lookup.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2015-03-20 14:18:27 +01:00
parent e33f5569aa
commit 7c10770f99
4 changed files with 50 additions and 30 deletions
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3
net/mac80211/ieee80211_i.h
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@@ -1745,7 +1745,8 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
gfp_t gfp);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
bool bss_notify);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, struct sk_buff *skb);
void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, int tid,