1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 94a57097e2b4..62abfb6f35c1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -761,6 +761,7 @@ void ipoib_mcast_restart_task(struct work_struct *work)
         struct ipoib_mcast *mcast, *tmcast;
         LIST_HEAD(remove_list);
         unsigned long flags;
+        struct ib_sa_mcmember_rec rec;
 
         ipoib_dbg_mcast(priv, "restarting multicast task\n");
 
@@ -794,6 +795,14 @@ void ipoib_mcast_restart_task(struct work_struct *work)
                 if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
                         struct ipoib_mcast *nmcast;
 
+                        /* ignore group which is directly joined by userspace */
+                        if (test_bit(IPOIB_FLAG_UMCAST, &priv->flags) &&
+                            !ib_sa_get_mcmember_rec(priv->ca, priv->port, &mgid, &rec)) {
+                                ipoib_dbg_mcast(priv, "ignoring multicast entry for mgid "
+                                                IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid));
+                                continue;
+                        }
+
                         /* Not found or send-only group, let's add a new entry */
                         ipoib_dbg_mcast(priv, "adding multicast entry for mgid "
                                         IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid));