diff options
| -rw-r--r-- | src/send.c | 9 |
1 files changed, 4 insertions, 5 deletions
@@ -187,11 +187,10 @@ static bool encrypt_packet(struct sk_buff *skb, struct noise_keypair *keypair, if (unlikely(skb_cow_head(skb, DATA_PACKET_HEAD_ROOM) < 0)) return false; - /* We have to remember to add the checksum to the innerpacket, in case - * the receiver forwards it. - */ - if (likely(!skb_checksum_setup(skb, true))) - skb_checksum_help(skb); + /* Finalize checksum calculation for the inner packet, if required. */ + if (unlikely(skb->ip_summed == CHECKSUM_PARTIAL && + skb_checksum_help(skb))) + return false; /* Only after checksumming can we safely add on the padding at the end * and the header. |