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authorFelix Fietkau <nbd@openwrt.org>2013-10-14 18:01:00 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-10-28 15:05:27 +0100
commit06be6b149f7e406bcf16098567f5a6c9f042bced (patch)
tree997b993af20474b9e3fd78ffb62a6fbd1c6bfbd4 /net/mac80211/tx.c
parent034c6d6e675f84ef5e67445150522b2517d963c9 (diff)
downloadlinux-stericsson-06be6b149f7e406bcf16098567f5a6c9f042bced.tar.gz
mac80211: add ieee80211_tx_prepare_skb() helper function
This can be used by a driver to prepare skbs for transmission, which were obtained via functions such as ieee80211_probereq_get or ieee80211_nullfunc_get. This is useful for drivers that want to send those frames directly, but need rate control information to be prepared first. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 4fcbf634b548..acd9b61fbc07 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1366,6 +1366,35 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
return 0;
}
+bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, struct sk_buff *skb,
+ int band, struct ieee80211_sta **sta)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_tx_data tx;
+
+ if (ieee80211_tx_prepare(sdata, &tx, skb) == TX_DROP)
+ return false;
+
+ info->band = band;
+ info->control.vif = vif;
+ info->hw_queue = vif->hw_queue[skb_get_queue_mapping(skb)];
+
+ if (invoke_tx_handlers(&tx))
+ return false;
+
+ if (sta) {
+ if (tx.sta)
+ *sta = &tx.sta->sta;
+ else
+ *sta = NULL;
+ }
+
+ return true;
+}
+EXPORT_SYMBOL(ieee80211_tx_prepare_skb);
+
/*
* Returns false if the frame couldn't be transmitted but was queued instead.
*/