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| author | David S. Miller <davem@davemloft.net> | 2016-01-15 18:36:23 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-15 18:36:23 -0500 |
| commit | 7a26019fdecdb45ff784ae4e3b7e0cc9045100ca (patch) | |
| tree | 511474baafa5b5c0b072e88feaa6bb405724b34f /net/core/dev.c | |
| parent | 725da8dee445662beea77d3f42c3f4c79f7a7a0e (diff) | |
| parent | 4e5448a31d73d0e944b7adb9049438a09bc332cb (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 0ca95d5d7af0..cc9e3652cf93 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2695,6 +2695,8 @@ static inline bool skb_needs_check(struct sk_buff *skb, bool tx_path) * * It may return NULL if the skb requires no segmentation. This is * only possible when GSO is used for verifying header integrity. + * + * Segmentation preserves SKB_SGO_CB_OFFSET bytes of previous skb cb. */ struct sk_buff *__skb_gso_segment(struct sk_buff *skb, netdev_features_t features, bool tx_path) @@ -2709,6 +2711,9 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb, return ERR_PTR(err); } + BUILD_BUG_ON(SKB_SGO_CB_OFFSET + + sizeof(*SKB_GSO_CB(skb)) > sizeof(skb->cb)); + SKB_GSO_CB(skb)->mac_offset = skb_headroom(skb); SKB_GSO_CB(skb)->encap_level = 0; |