diff options
| author | Tom Herbert <tom@herbertland.com> | 2015-04-20 14:10:04 -0700 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-05-11 07:07:55 -0400 |
| commit | dc7071483edd513abad3751b57a1dd832ca31156 (patch) | |
| tree | d82fd9b1c23e56682f074ed48d1501fa40a904d4 | |
| parent | 7aca2472093e9353793faeede03c94d00ce42fb1 (diff) | |
| download | lwn-dc7071483edd513abad3751b57a1dd832ca31156.tar.gz lwn-dc7071483edd513abad3751b57a1dd832ca31156.zip | |
net: add skb_checksum_complete_unset
[ Upstream commit 4e18b9adf2f910ec4d30b811a74a5b626e6c6125 ]
This function changes ip_summed to CHECKSUM_NONE if CHECKSUM_COMPLETE
is set. This is called to discard checksum-complete when packet
is being modified and checksum is not pulled for headers in a layer.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | include/linux/skbuff.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6c8b6f604e76..ab4a3199a18e 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2958,6 +2958,18 @@ static inline bool __skb_checksum_validate_needed(struct sk_buff *skb, */ #define CHECKSUM_BREAK 76 +/* Unset checksum-complete + * + * Unset checksum complete can be done when packet is being modified + * (uncompressed for instance) and checksum-complete value is + * invalidated. + */ +static inline void skb_checksum_complete_unset(struct sk_buff *skb) +{ + if (skb->ip_summed == CHECKSUM_COMPLETE) + skb->ip_summed = CHECKSUM_NONE; +} + /* Validate (init) checksum based on checksum complete. * * Return values: |