提交 3189a290 编写于 作者: D Davide Caratti 提交者: Pablo Neira Ayuso

netfilter: nat: skip checksum on offload SCTP packets

SCTP GSO and hardware can do CRC32c computation after netfilter processing,
so we can avoid calling sctp_compute_checksum() on skb if skb->ip_summed
is equal to CHECKSUM_PARTIAL. Moreover, set skb->ip_summed to CHECKSUM_NONE
when the NAT code computes the CRC, to prevent offloaders from computing
it again (on ixgbe this resulted in a transmission with wrong L4 checksum).
Signed-off-by: NDavide Caratti <dcaratti@redhat.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
上级 3b760dcb
......@@ -47,7 +47,10 @@ sctp_manip_pkt(struct sk_buff *skb,
hdr->dest = tuple->dst.u.sctp.port;
}
hdr->checksum = sctp_compute_cksum(skb, hdroff);
if (skb->ip_summed != CHECKSUM_PARTIAL) {
hdr->checksum = sctp_compute_cksum(skb, hdroff);
skb->ip_summed = CHECKSUM_NONE;
}
return true;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册