From: Felix Manlunas <felix.manlunas@cavium.com>
To: <davem@davemloft.net>
Cc: <netdev@vger.kernel.org>, <raghu.vatsavayi@cavium.com>,
<derek.chickles@cavium.com>, <satananda.burla@cavium.com>
Subject: [PATCH net-next] liquidio: Avoid accessing skb after submitting to input queue
Date: Thu, 26 Jan 2017 11:52:35 -0800 [thread overview]
Message-ID: <20170126195235.GA3875@felix.cavium.com> (raw)
From: Satanand Burla <satananda.burla@cavium.com>
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>
---
drivers/net/ethernet/cavium/liquidio/lio_main.c | 6 +++---
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 5ee3f00..9261ddc 100644
--- 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
index e96cf6c..a6587d7 100644
--- 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;
next reply other threads:[~2017-01-26 19:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-26 19:52 Felix Manlunas [this message]
2017-01-26 20:42 ` [PATCH net-next] liquidio: Avoid accessing skb after submitting to input queue David Miller
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