1 files changed, 22 insertions, 6 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 2ba7426..0ee56bb 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -666,10 +666,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	if (unlikely(info->control.rates[0].idx < 0))
 		return TX_DROP;
 
-	if (txrc.reported_rate.idx < 0)
+	if (txrc.reported_rate.idx < 0) {
 		txrc.reported_rate = info->control.rates[0];
-
-	if (tx->sta)
+		if (tx->sta && ieee80211_is_data(hdr->frame_control))
+			tx->sta->last_tx_rate = txrc.reported_rate;
+	} else if (tx->sta)
 		tx->sta->last_tx_rate = txrc.reported_rate;
 
 	if (unlikely(!info->control.rates[0].count))
@@ -1745,15 +1746,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	int nh_pos, h_pos;
 	struct sta_info *sta = NULL;
 	u32 sta_flags = 0;
+	struct sk_buff *tmp_skb;
 
 	if (unlikely(skb->len < ETH_HLEN)) {
 		ret = NETDEV_TX_OK;
 		goto fail;
 	}
 
-	nh_pos = skb_network_header(skb) - skb->data;
-	h_pos = skb_transport_header(skb) - skb->data;
-
 	/* convert Ethernet header to proper 802.11 header (based on
 	 * operation mode) */
 	ethertype = (skb->data[12] << 8) | skb->data[13];
@@ -1926,6 +1925,20 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		goto fail;
 	}
 
+	/*
+	 * If the skb is shared we need to obtain our own copy.
+	 */
+	if (skb_shared(skb)) {
+		tmp_skb = skb;
+		skb = skb_copy(skb, GFP_ATOMIC);
+		kfree_skb(tmp_skb);
+
+		if (!skb) {
+			ret = NETDEV_TX_OK;
+			goto fail;
+		}
+	}
+
 	hdr.frame_control = fc;
 	hdr.duration_id = 0;
 	hdr.seq_ctrl = 0;
@@ -1944,6 +1957,9 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		encaps_len = 0;
 	}
 
+	nh_pos = skb_network_header(skb) - skb->data;
+	h_pos = skb_transport_header(skb) - skb->data;
+
 	skb_pull(skb, skip_header_bytes);
 	nh_pos -= skip_header_bytes;
 	h_pos -= skip_header_bytes;