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net: Move skb_has_shared_frag check out of GRE code and into segmentation

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The call skb_has_shared_frag is used in the GRE path and skb_checksum_help
to verify that no frags can be modified by an external entity.  This check
really doesn't belong in the GRE path but in the skb_segment function
itself.  This way any protocol that might be segmented will be performing
this check before attempting to offload a checksum to software.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck
2016-02-05 15:27:55 -08:00
committed by David S. Miller
parent 08b64fcca9
commit ddff00d420
2 changed files with 5 additions and 11 deletions
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5
net/core/skbuff.c
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@@ -3173,6 +3173,11 @@ skip_fraglist:
perform_csum_check:
if (!csum) {
if (skb_has_shared_frag(nskb)) {
err = __skb_linearize(nskb);
if (err)
goto err;
}
if (!nskb->remcsum_offload)
nskb->ip_summed = CHECKSUM_NONE;
SKB_GSO_CB(nskb)->csum =