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net: Warn for cloned packets in ingress path

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Cloned packets arriving in ingress path can cause issues with GRO
since the skb shared info is garbled.

Warn once if a cloned packet is queued up to the network stack.

CRs-Fixed: 823275
Change-Id: I049f04f39b3d1338838560e08c93a973de427fc0
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
[subashab@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan 2015-04-28 14:31:40 -06:00 • committed by David Keitel
parent 04be6f96ac
commit e1f88edd76
1 changed files with 3 additions and 0 deletions
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3
net/core/dev.c
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@ -3529,6 +3529,9 @@ static int netif_rx_internal(struct sk_buff *skb)
{
int ret;
WARN_ONCE(skb_cloned(skb), "Cloned packet from dev %s\n",
skb->dev->name);
net_timestamp_check(netdev_tstamp_prequeue, skb);
trace_netif_rx(skb);