net: add skb_checksum_complete_unset (4e18b9ad) · Commits · 戴 / test

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>

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:

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