diff options
Diffstat (limited to 'net/core/datagram.c')
| -rw-r--r-- | net/core/datagram.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c index a16ed7bbe376..6b1c04ca1d50 100644 --- a/net/core/datagram.c +++ b/net/core/datagram.c @@ -739,11 +739,15 @@ __sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len) __sum16 sum; sum = csum_fold(skb_checksum(skb, 0, len, skb->csum)); - if (likely(!sum)) { - if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE)) - netdev_rx_csum_fault(skb->dev); - skb->ip_summed = CHECKSUM_UNNECESSARY; - } + if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE) && !sum && + !skb->csum_complete_sw) + netdev_rx_csum_fault(skb->dev); + + /* Save checksum complete for later use */ + skb->csum = sum; + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum_complete_sw = 1; + return sum; } EXPORT_SYMBOL(__skb_checksum_complete_head); |