From: Erez Shitrit Date: Wed, 16 Oct 2013 14:37:53 +0000 (+0300) Subject: IPoIB: Start multicast join process only on active ports X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=94232d9ce817;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git IPoIB: Start multicast join process only on active ports The driver starts the mcast_join task whenever the netdev interface is UP without relation to the underlying IB port state. Until the port state is ACTIVE all the join requests are irrelevant, and the IB core returns -EINVAL. So the user will see errors such as: "multicast join failed for ff12:401b:... , status -22". Instead, have ipoib_mcast_join_task() return when the port is not active. It will be called again when the port state is changed and the low-level driver triggers the IB_EVENT_PORT_ACTIVE event or the IB_EVENT_CLIENT_REREGISTER event. Signed-off-by: Erez Shitrit Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index 780a2a0df41f..d4e005720d01 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -518,10 +518,18 @@ void ipoib_mcast_join_task(struct work_struct *work) struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, mcast_task.work); struct net_device *dev = priv->dev; + struct ib_port_attr port_attr; if (!test_bit(IPOIB_MCAST_RUN, &priv->flags)) return; + if (ib_query_port(priv->ca, priv->port, &port_attr) || + port_attr.state != IB_PORT_ACTIVE) { + ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n", + port_attr.state); + return; + } + if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) ipoib_warn(priv, "ib_query_gid() failed\n"); else