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

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[ Upstream commit 63ecc3d943 ]

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().

Fixes: d39d938c82 ("ipv6: Introduce udpv6_send_skb()")
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan 2017-09-13 19:30:51 -06:00 committed by Greg Kroah-Hartman
parent 2ec54b21dd
commit 5356f7e40d
1 changed files with 1 additions and 0 deletions
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1
net/ipv6/udp.c
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@ -1007,6 +1007,7 @@ static void udp6_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb,
*/
offset = skb_transport_offset(skb);
skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
csum = skb->csum;
skb->ip_summed = CHECKSUM_NONE;