[PATCH] IPoIB: Set full membership bit in P_Keys

Always make sure that the full membership bit is set in the P_Keys
that IPoIB uses. This makes sure that all hosts join the correct
multicast groups so that hosts that are partial partition members
can talk to the rest of the network.

Signed-off-by: Roland Dreier <[e-mail]>

drivers/infiniband/ulp/ipoib/ipoib_main.c

···
 	if (pkey < 0 || pkey > 0xffff)
 		return -EINVAL;
 
+	/*
+	 * Set the full membership bit, so that we join the right
+	 * broadcast group, etc.
+	 */
+	pkey |= 0x8000;
+
 	ret = ipoib_vlan_add(container_of(cdev, struct net_device, class_dev),
 			     pkey);
 
···
 		       hca->name, port, result);
 		goto alloc_mem_failed;
 	}
+
+	/*
+	 * Set the full membership bit, so that we join the right
+	 * broadcast group, etc.
+	 */
+	priv->pkey |= 0x8000;
 
 	priv->dev->broadcast[8] = priv->pkey >> 8;
 	priv->dev->broadcast[9] = priv->pkey & 0xff;