mpls: Send route delete notifications when router module is unloaded

When the mpls_router module is unloaded, mpls routes are deleted but
notifications are not sent to userspace leaving userspace caches
out of sync. Add the call to mpls_notify_route in mpls_net_exit as
routes are freed.

Fixes: 0189197f44160 ("mpls: Basic routing support")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 3818686182b2..a1477989ed0b 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -2028,6 +2028,7 @@ static void mpls_net_exit(struct net *net)
         for (index = 0; index < platform_labels; index++) {
                 struct mpls_route *rt = rtnl_dereference(platform_label[index]);
                 RCU_INIT_POINTER(platform_label[index], NULL);
+                mpls_notify_route(net, index, rt, NULL, NULL);
                 mpls_rt_free(rt);
         }
         rtnl_unlock();