diff options
| author | Tom Herbert <tom@herbertland.com> | 2015-04-20 14:10:04 -0700 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-04-29 11:32:04 +0100 |
| commit | c0fd4b0ef36f8ccbf6ddb953b5fa69af79b65c6c (patch) | |
| tree | 147dfb75db5bd35b040cda65644f824a9ea15d01 /include | |
| parent | ee446a4d19dd24463ea5f830ae9a26238923f6df (diff) | |
net: add skb_checksum_complete_unset
commit 4e18b9adf2f910ec4d30b811a74a5b626e6c6125 upstream.
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: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include')
| -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 6bb6bd86b0dc..e6c09cffb995 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2798,6 +2798,18 @@ 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: |