diff options
| author | David Ahern <dsa@cumulusnetworks.com> | 2016-04-07 11:10:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-11 15:56:20 -0400 |
| commit | 9ab179d83b4e31ea277a123492e419067c2f129a (patch) | |
| tree | d56d2138f40f62e348dd7ac0c0b6a70b4a3b9207 /include/net/ip6_route.h | |
| parent | 10c3c02255124e28c8bb63a274a543ee7e77f223 (diff) | |
| download | linux-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.h | 3 |
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 * |