iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
[ Upstream commit 63ecc3d9436f8012e49dc846d6cb0a85a3433517 ]

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: d39d938c8228 ("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 85908ccae5
commit f0a5af78b5
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
net/ipv6/udp.c
View File

@ -915,6 +915,7 @@ 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;