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Commit a1a3fcec authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

mac80211: move fragment flag adjustment 



Instead of adjusting the fragment flags at
TX time, adjust them at fragmentation time.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 252b86c4

net/mac80211/tx.c

+9 −9
Original line number Diff line number Diff line
@@ -847,6 +847,7 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx, 
			      int frag_threshold)

{

	struct ieee80211_local *local = tx->local;

	struct ieee80211_tx_info *info;

	struct sk_buff *tmp;

	int per_fragm = frag_threshold - hdrlen - FCS_LEN;

	int pos = hdrlen + per_fragm;
@@ -876,6 +877,14 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx, 
				 IEEE80211_ENCRYPT_HEADROOM);

		/* copy control information */

		memcpy(tmp->cb, skb->cb, sizeof(tmp->cb));



		info = IEEE80211_SKB_CB(tmp);

		info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |

				 IEEE80211_TX_CTL_FIRST_FRAGMENT);



		if (rem)

			info->flags |= IEEE80211_TX_CTL_MORE_FRAMES;



		skb_copy_queue_mapping(tmp, skb);

		tmp->priority = skb->priority;

		tmp->dev = skb->dev;
@@ -1203,7 +1212,6 @@ static bool __ieee80211_tx(struct ieee80211_local *local, 
	struct ieee80211_sub_if_data *sdata;

	unsigned long flags;

	int len;

	bool fragm = false;



	skb_queue_walk_safe(skbs, skb, tmp) {

		int q = skb_get_queue_mapping(skb);
@@ -1230,15 +1238,8 @@ static bool __ieee80211_tx(struct ieee80211_local *local, 


		info = IEEE80211_SKB_CB(skb);



		if (fragm)

			info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |

					 IEEE80211_TX_CTL_FIRST_FRAGMENT);



		len = skb->len;



		if (!skb_queue_is_last(skbs, skb))

			info->flags |= IEEE80211_TX_CTL_MORE_FRAMES;



		sdata = vif_to_sdata(info->control.vif);



		switch (sdata->vif.type) {
@@ -1266,7 +1267,6 @@ static bool __ieee80211_tx(struct ieee80211_local *local, 


		ieee80211_tpt_led_trig_tx(local, fc, len);

		ieee80211_led_tx(local, 1);

		fragm = true;

	}



	WARN_ON(!skb_queue_empty(skbs));