net: vrf: Fix setting NLM_F_EXCL flag when adding l3mdev rule

BugLink: http://bugs.launchpad.net/bugs/1688499
[ Upstream commit 426c87caa2b4578b43cd3f689f02c65b743b2559 ]

Only need 1 l3mdev FIB rule. Fix setting NLM_F_EXCL in the nlmsghdr.

Fixes: 1aa6c4f6b8cd8 ("net: vrf: Add l3mdev rules on first device create")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index 921fef275ea4b8769012c902a618e2b083db03e9..f2fd52e71a5ed58f6e238578a08bb7902d6b8595 100644 (file)
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -1126,7 +1126,7 @@ static int vrf_fib_rule(const struct net_device *dev, __u8 family, bool add_it)
                goto nla_put_failure;
 
        /* rule only needs to appear once */
-       nlh->nlmsg_flags &= NLM_F_EXCL;
+       nlh->nlmsg_flags |= NLM_F_EXCL;
 
        frh = nlmsg_data(nlh);
        memset(frh, 0, sizeof(*frh));