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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>
This commit is contained in:
Satanand Burla 2017-01-26 11:52:35 -08:00 committed by David S. Miller
parent 49b3eb7725
commit 80c8eae6ee
2 changed files with 6 additions and 6 deletions
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6
drivers/net/ethernet/cavium/liquidio/lio_main.c
View File

@ -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;

6
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
View File

@ -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;