xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: preserve IP control block during GSO segmentation

Browse Source 
Skb_gso_segment() uses skb control block during segmentation.
This patch adds 32-bytes room for previous control block which
will be copied into all resulting segments.

This patch fixes kernel crash during fragmenting forwarded packets.
Fragmentation requires valid IP CB in skb for clearing ip options.
Also patch removes custom save/restore in ovs code, now it's redundant.

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Link: http://lkml.kernel.org/r/CALYGNiP-0MZ-FExV2HutTvE9U-QQtkKSoE--KN=JQE5STYsjAA@mail.gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Konstantin Khlebnikov
2016-01-08 15:21:46 +03:00
committed by David S. Miller
parent 5d19c619ab
commit 9207f9d45b
5 changed files with 11 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/skbuff.h
View File

@@ -3551,7 +3551,8 @@ struct skb_gso_cb {
int encap_level;
__u16 csum_start;
};
#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)(skb)->cb)
#define SKB_SGO_CB_OFFSET 32
#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)((skb)->cb + SKB_SGO_CB_OFFSET))
static inline int skb_tnl_header_len(const struct sk_buff *inner_skb)
{