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authorRoopa Prabhu <roopa@cumulusnetworks.com>2017-05-30 23:50:36 -0700
committerDavid S. Miller <davem@davemloft.net>2017-05-31 14:48:24 -0400
commitc2e8471d98f072f0f18acdd7df5b401ed0d29a2c (patch)
tree85255531c646af1ed823f1665a7fc091484ca100 /net/mpls
parente8f4ae85439f34bec3b0ab69223a41809dab28c9 (diff)
downloadlinux-stericsson-c2e8471d98f072f0f18acdd7df5b401ed0d29a2c.tar.gz
mpls: fix clearing of dead nh_flags on link up
recent fixes to use WRITE_ONCE for nh_flags on link up, accidently ended up leaving the deadflags on a nh. This patch fixes the WRITE_ONCE to use freshly evaluated nh_flags. Fixes: 39eb8cd17588 ("net: mpls: rt_nhn_alive and nh_flags should be accessed using READ_ONCE") Reported-by: Satish Ashok <sashok@cumulusnetworks.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mpls')
-rw-r--r--net/mpls/af_mpls.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 257ec66009da..7b05fd1497ce 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -1418,7 +1418,7 @@ static void mpls_ifup(struct net_device *dev, unsigned int flags)
continue;
alive++;
nh_flags &= ~flags;
- WRITE_ONCE(nh->nh_flags, flags);
+ WRITE_ONCE(nh->nh_flags, nh_flags);
} endfor_nexthops(rt);
WRITE_ONCE(rt->rt_nhn_alive, alive);