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vti4: ipip tunnel deregistration fixes.

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[ Upstream commit 5483844c3f ]

If tunnel registration failed during module initialization, the module
would fail to deregister the IPPROTO_COMP protocol and would attempt to
deregister the tunnel.

The tunnel was not deregistered during module-exit.

Fixes: dd9ee34440 ("vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel")
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jeremy Sowden 2019-03-19 15:39:20 +00:00 committed by Greg Kroah-Hartman
parent f8a427ca50
commit 6c0db1cbf7
1 changed files with 3 additions and 2 deletions
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5
net/ipv4/ip_vti.c
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@ -659,9 +659,9 @@ static int __init vti_init(void)
return err; return err;
rtnl_link_failed: rtnl_link_failed:
xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP);
xfrm_tunnel_failed:
xfrm4_tunnel_deregister(&ipip_handler, AF_INET); xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
xfrm_tunnel_failed:
xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP);
xfrm_proto_comp_failed: xfrm_proto_comp_failed:
xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH); xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH);
xfrm_proto_ah_failed: xfrm_proto_ah_failed:
@ -676,6 +676,7 @@ pernet_dev_failed:
static void __exit vti_fini(void) static void __exit vti_fini(void)
{ {
rtnl_link_unregister(&vti_link_ops); rtnl_link_unregister(&vti_link_ops);
xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP); xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP);
xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH); xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH);
xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP); xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP);