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| author |   Tom Herbert <tom@herbertland.com> | 2015-04-20 14:10:04 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-04-20 21:57:26 -0400 |
| commit | 4e18b9adf2f910ec4d30b811a74a5b626e6c6125 (patch) | |
| tree | 59a9b374ff9be0d2fba7c4e8f3eb7a921c1d0cdf | |
| parent | pppoe: Lacks DST MAC address check (diff) | |
| download | linux-dev-4e18b9adf2f910ec4d30b811a74a5b626e6c6125.tar.xz linux-dev-4e18b9adf2f910ec4d30b811a74a5b626e6c6125.zip | |
net: add skb_checksum_complete_unset
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>
| -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 0991259643d6..06793b598f44 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3016,6 +3016,18 @@ 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: |