path: root/net/ipv6/esp6_offload.c
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authorYossi Kuperman <yossiku@mellanox.com>2017-08-01 12:49:07 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2017-08-02 11:00:15 +0200
commita9b28c2bf05d9d9998d5d3c6453fd75bc4cf8a6d (patch)
treed0ccdee200b0deb6b60bc149a431765265526d03 /net/ipv6/esp6_offload.c
parente9cba69448df7686e1c35e74be48fc715d41ac45 (diff)
esp6: Fix RX checksum after header pull
Both ip6_input_finish (non-GRO) and esp6_gro_receive (GRO) strip the IPv6 header without adjusting skb->csum accordingly. As a result CHECKSUM_COMPLETE breaks and "hw csum failure" is written to the kernel log by netdev_rx_csum_fault (dev.c). Fix skb->csum by substracting the checksum value of the pulled IPv6 header using a call to skb_postpull_rcsum. This affects both transport and tunnel modes. Note that the fix occurs far from the place that the header was pulled. This is based on existing code, see: ipv6_srh_rcv() in exthdrs.c and rawv6_rcv() in raw.c Signed-off-by: Yossi Kuperman <yossiku@mellanox.com> Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/esp6_offload.c')
0 files changed, 0 insertions, 0 deletions