diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-02 23:22:20 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-02 23:22:20 -0300 |
commit | 5c545e1fb127a4b11ddc5f1a5ed066b853dd1a1a (patch) | |
tree | d4cd913bc79d37d32756a9bffbeedabf93e32579 /net/core/dev.c | |
parent | b4b7ff4b08e691656c9d77c758fc355833128ac0 (diff) |
Linux-libre 4.4.1-gnupck-4.4.1-gnu
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 ae00b894e..7f00f2439 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2542,6 +2542,8 @@ 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) @@ -2556,6 +2558,9 @@ 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; |