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https://github.com/torvalds/linux
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d2d273ffab
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>
41 lines
935 B
C
41 lines
935 B
C
/*
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* IPV6 GSO/GRO offload support
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* Linux INET6 implementation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* IPV6 Extension Header GSO/GRO support
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*/
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#include <net/protocol.h>
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#include "ip6_offload.h"
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static const struct net_offload rthdr_offload = {
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.flags = INET6_PROTO_GSO_EXTHDR,
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};
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static const struct net_offload dstopt_offload = {
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.flags = INET6_PROTO_GSO_EXTHDR,
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};
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int __init ipv6_exthdrs_offload_init(void)
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{
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int ret;
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ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING);
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if (ret)
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goto out;
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ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS);
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if (ret)
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goto out_rt;
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out:
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return ret;
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out_rt:
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inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);
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goto out;
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}
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