Commit 63ecc3d9 authored Sep 13, 2017 by Subash Abhinov Kasiviswanathan Committed by David S. Miller Sep 18, 2017

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



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: d39d938c ("ipv6: Introduce udpv6_send_skb()")
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2bd6bf03

net/ipv6/udp.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1015,6 +1015,7 @@ 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;

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