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linux-next/net/ipv6/exthdrs_offload.c
Anton Nayshtut d2d273ffab ipv6: Fix exthdrs offload registration.
Without this fix, ipv6_exthdrs_offload_init doesn't register IPPROTO_DSTOPTS
offload, but returns 0 (as the IPPROTO_ROUTING registration actually succeeds).

This then causes the ipv6_gso_segment to drop IPv6 packets with IPPROTO_DSTOPTS
header.

The issue detected and the fix verified by running MS HCK Offload LSO test on
top of QEMU Windows guests, as this test sends IPv6 packets with
IPPROTO_DSTOPTS.

Signed-off-by: Anton Nayshtut <anton@swortex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-06 16:35:55 -05:00

42 lines
935 B
C

/*
* IPV6 GSO/GRO offload support
* Linux INET6 implementation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* IPV6 Extension Header GSO/GRO support
*/
#include <net/protocol.h>
#include "ip6_offload.h"
static const struct net_offload rthdr_offload = {
.flags = INET6_PROTO_GSO_EXTHDR,
};
static const struct net_offload dstopt_offload = {
.flags = INET6_PROTO_GSO_EXTHDR,
};
int __init ipv6_exthdrs_offload_init(void)
{
int ret;
ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING);
if (ret)
goto out;
ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS);
if (ret)
goto out_rt;
out:
return ret;
out_rt:
inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);
goto out;
}