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-rw-r--r--net/mac80211/rate.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 4641f00a1e5c..8ac7a984d886 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -198,6 +198,35 @@ static void rate_control_release(struct kref *kref)
198 kfree(ctrl_ref); 198 kfree(ctrl_ref);
199} 199}
200 200
201static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc)
202{
203 struct sk_buff *skb = txrc->skb;
204 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
205 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
206 __le16 fc;
207
208 fc = hdr->frame_control;
209
210 return ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc));
211}
212
213bool rate_control_send_low(struct ieee80211_sta *sta,
214 void *priv_sta,
215 struct ieee80211_tx_rate_control *txrc)
216{
217 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
218
219 if (!sta || !priv_sta || rc_no_data_or_no_ack(txrc)) {
220 info->control.rates[0].idx = rate_lowest_index(txrc->sband, sta);
221 info->control.rates[0].count =
222 (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
223 1 : txrc->hw->max_rate_tries;
224 return true;
225 }
226 return false;
227}
228EXPORT_SYMBOL(rate_control_send_low);
229
201void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, 230void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
202 struct sta_info *sta, 231 struct sta_info *sta,
203 struct ieee80211_tx_rate_control *txrc) 232 struct ieee80211_tx_rate_control *txrc)