diff options
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index c93b5859a772..23710a243439 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -617,7 +617,8 @@ struct sk_buff { kmemcheck_bitfield_begin(flags3); __u8 csum_level:2; - /* 14 bit hole */ + __u8 csum_bad:1; + /* 13 bit hole */ kmemcheck_bitfield_end(flags3); __be16 inner_protocol; @@ -2825,6 +2826,21 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) } } +static inline void __skb_mark_checksum_bad(struct sk_buff *skb) +{ + /* Mark current checksum as bad (typically called from GRO + * path). In the case that ip_summed is CHECKSUM_NONE + * this must be the first checksum encountered in the packet. + * When ip_summed is CHECKSUM_UNNECESSARY, this is the first + * checksum after the last one validated. For UDP, a zero + * checksum can not be marked as bad. + */ + + if (skb->ip_summed == CHECKSUM_NONE || + skb->ip_summed == CHECKSUM_UNNECESSARY) + skb->csum_bad = 1; +} + /* Check if we need to perform checksum complete validation. * * Returns true if checksum complete is needed, false otherwise @@ -2866,6 +2882,9 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb, skb->csum_valid = 1; return 0; } + } else if (skb->csum_bad) { + /* ip_summed == CHECKSUM_NONE in this case */ + return 1; } skb->csum = psum; |