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Commit 4e18b9ad authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

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: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a068833b

include/linux/skbuff.h

+12 −0
Original line number Diff line number Diff line
@@ -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: