liquidio: Avoid accessing skb after submitting to input queue

Accessing skb after submitting to input queue can cause access to stale pointers if the skb ends up being transmitted and freed by that time. Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jan 26, 2017 · 80c8eae · 80c8eae
1 parent 49b3eb7
commit 80c8eae
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Showing 2 changed files with 6 additions and 6 deletions.
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -3316,11 +3316,11 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
 
 	netif_trans_update(netdev);
 
-	if (skb_shinfo(skb)->gso_size)
-		stats->tx_done += skb_shinfo(skb)->gso_segs;
+	if (tx_info->s.gso_segs)
+		stats->tx_done += tx_info->s.gso_segs;
 	else
 		stats->tx_done++;
-	stats->tx_tot_bytes += skb->len;
+	stats->tx_tot_bytes += ndata.datasize;
 
 	return NETDEV_TX_OK;
 

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -2433,11 +2433,11 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
 
 	netif_trans_update(netdev);
 
-	if (skb_shinfo(skb)->gso_size)
-		stats->tx_done += skb_shinfo(skb)->gso_segs;
+	if (tx_info->s.gso_segs)
+		stats->tx_done += tx_info->s.gso_segs;
 	else
 		stats->tx_done++;
-	stats->tx_tot_bytes += skb->len;
+	stats->tx_tot_bytes += ndata.datasize;
 
 	return NETDEV_TX_OK;