diff options
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 39206751463e..89b536796e53 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3713,19 +3713,18 @@ static inline unsigned int skb_gso_network_seglen(const struct sk_buff *skb) */ static inline __wsum lco_csum(struct sk_buff *skb) { - char *inner_csum_field; - __wsum csum; + unsigned char *csum_start = skb_checksum_start(skb); + unsigned char *l4_hdr = skb_transport_header(skb); + __wsum partial; /* Start with complement of inner checksum adjustment */ - inner_csum_field = skb->data + skb_checksum_start_offset(skb) + - skb->csum_offset; - csum = ~csum_unfold(*(__force __sum16 *)inner_csum_field); + partial = ~csum_unfold(*(__force __sum16 *)(csum_start + + skb->csum_offset)); + /* Add in checksum of our headers (incl. outer checksum - * adjustment filled in by caller) + * adjustment filled in by caller) and return result. */ - csum = skb_checksum(skb, 0, skb_checksum_start_offset(skb), csum); - /* The result is the checksum from skb->data to end of packet */ - return csum; + return csum_partial(l4_hdr, csum_start - l4_hdr, partial); } #endif /* __KERNEL__ */ |