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udpv6: Fix the checksum computation when HW checksum does not apply

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While trying an ESP transport mode encryption for UDPv6 packets of
datagram size 1436 with MTU 1500, checksum error was observed in
the secondary fragment.

This error occurs due to the UDP payload checksum being missed out
when computing the full checksum for these packets in
udp6_hwcsum_outgoing().

CRs-Fixed: 2087660
Change-Id: I8f9066a5fa731a7c81b6713dc93b1cf4824646f0
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan 2017-09-13 17:56:39 -06:00
parent 6b61088893
commit 721f345aa2
1 changed files with 1 additions and 0 deletions
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net/ipv6/udp.c
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@ -1073,6 +1073,7 @@ static void udp6_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb,
*/ */
offset = skb_transport_offset(skb); offset = skb_transport_offset(skb);
skb->csum = skb_checksum(skb, offset, skb->len - offset, 0); skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
csum = skb->csum;
skb->ip_summed = CHECKSUM_NONE; skb->ip_summed = CHECKSUM_NONE;