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authorChristoph Lameter <cl@linux.com>2015-09-24 12:00:05 -0500
committerDoug Ledford <dledford@redhat.com>2015-09-25 14:43:19 -0400
commitbd99b2e05c4df2a428e5c9dd338289089d0e26df (patch)
treea8dd55afe17b807e35c78e82d71ea51dc470d658 /drivers/infiniband
parent81fb5e26a9d05674c048803a20cb8f08a1b1c9b8 (diff)
IB/ipoib: Expire sendonly multicast joins
On neighbor expiration, check to see if the neighbor was actually a sendonly multicast join, and if so, leave the multicast group as we expire the neighbor. Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib.h2
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c18
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_multicast.c4
3 files changed, 22 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index ca2873698d75..4ff4e5290354 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -548,6 +548,8 @@ void ipoib_path_iter_read(struct ipoib_path_iter *iter,
int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
union ib_gid *mgid, int set_qkey);
+int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast);
+struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid);
int ipoib_init_qp(struct net_device *dev);
int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 36536ce5a3e2..f74316e679d2 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1149,6 +1149,9 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
unsigned long dt;
unsigned long flags;
int i;
+ LIST_HEAD(remove_list);
+ struct ipoib_mcast *mcast, *tmcast;
+ struct net_device *dev = priv->dev;
if (test_bit(IPOIB_STOP_NEIGH_GC, &priv->flags))
return;
@@ -1176,6 +1179,19 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
lockdep_is_held(&priv->lock))) != NULL) {
/* was the neigh idle for two GC periods */
if (time_after(neigh_obsolete, neigh->alive)) {
+ u8 *mgid = neigh->daddr + 4;
+
+ /* Is this multicast ? */
+ if (*mgid == 0xff) {
+ mcast = __ipoib_mcast_find(dev, mgid);
+
+ if (mcast && test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
+ list_del(&mcast->list);
+ rb_erase(&mcast->rb_node, &priv->multicast_tree);
+ list_add_tail(&mcast->list, &remove_list);
+ }
+ }
+
rcu_assign_pointer(*np,
rcu_dereference_protected(neigh->hnext,
lockdep_is_held(&priv->lock)));
@@ -1191,6 +1207,8 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
out_unlock:
spin_unlock_irqrestore(&priv->lock, flags);
+ list_for_each_entry_safe(mcast, tmcast, &remove_list, list)
+ ipoib_mcast_leave(dev, mcast);
}
static void ipoib_reap_neigh(struct work_struct *work)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 09a1748f9d13..33131001fa24 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -153,7 +153,7 @@ static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
return mcast;
}
-static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid)
+struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct rb_node *n = priv->multicast_tree.rb_node;
@@ -675,7 +675,7 @@ int ipoib_mcast_stop_thread(struct net_device *dev)
return 0;
}
-static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
+int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
int ret = 0;