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authorDavid Ahern <dsa@cumulusnetworks.com>2016-04-07 11:10:06 -0700
committerDavid S. Miller <davem@davemloft.net>2016-04-11 15:56:20 -0400
commit9ab179d83b4e31ea277a123492e419067c2f129a (patch)
treed56d2138f40f62e348dd7ac0c0b6a70b4a3b9207 /include/net/ip6_route.h
parent10c3c02255124e28c8bb63a274a543ee7e77f223 (diff)
downloadlinux-9ab179d83b4e31ea277a123492e419067c2f129a.tar.bz2
net: vrf: Fix dst reference counting
Vivek reported a kernel exception deleting a VRF with an active connection through it. The root cause is that the socket has a cached reference to a dst that is destroyed. Converting the dst_destroy to dst_release and letting proper reference counting kick in does not work as the dst has a reference to the device which needs to be released as well. I talked to Hannes about this at netdev and he pointed out the ipv4 and ipv6 dst handling has dst_ifdown for just this scenario. Rather than continuing with the reinvented dst wheel in VRF just remove it and leverage the ipv4 and ipv6 versions. Fixes: 193125dbd8eb2 ("net: Introduce VRF device driver") Fixes: 35402e3136634 ("net: Add IPv6 support to VRF device") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip6_route.h')
-rw-r--r--include/net/ip6_route.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 295d291269e2..54c779416eec 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -101,6 +101,9 @@ void fib6_force_start_gc(struct net *net);
struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
const struct in6_addr *addr, bool anycast);
+struct rt6_info *ip6_dst_alloc(struct net *net, struct net_device *dev,
+ int flags);
+
/*
* support functions for ND
*