1 files changed, 116 insertions, 20 deletions

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ae11d5cc74d0..d951896ff7fc 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -155,9 +155,7 @@ struct cma_multicast {
 	} multicast;
 	struct list_head	list;
 	void			*context;
-	struct sockaddr		addr;
-	u8			pad[sizeof(struct sockaddr_in6) -
-				    sizeof(struct sockaddr)];
+	struct sockaddr_storage	addr;
 };
 
 struct cma_work {
@@ -168,6 +166,12 @@ struct cma_work {
 	struct rdma_cm_event	event;
 };
 
+struct cma_ndev_work {
+	struct work_struct	work;
+	struct rdma_id_private	*id;
+	struct rdma_cm_event	event;
+};
+
 union cma_ip_addr {
 	struct in6_addr ip6;
 	struct {
@@ -780,8 +784,8 @@ static void cma_cancel_operation(struct rdma_id_private *id_priv,
 		cma_cancel_route(id_priv);
 		break;
 	case CMA_LISTEN:
-		if (cma_any_addr(&id_priv->id.route.addr.src_addr) &&
-		    !id_priv->cma_dev)
+		if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)
+				&& !id_priv->cma_dev)
 			cma_cancel_listens(id_priv);
 		break;
 	default:
@@ -914,7 +918,10 @@ static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
 	struct rdma_cm_event event;
 	int ret = 0;
 
-	if (cma_disable_callback(id_priv, CMA_CONNECT))
+	if ((ib_event->event != IB_CM_TIMEWAIT_EXIT &&
+		cma_disable_callback(id_priv, CMA_CONNECT)) ||
+	    (ib_event->event == IB_CM_TIMEWAIT_EXIT &&
+		cma_disable_callback(id_priv, CMA_DISCONNECT)))
 		return 0;
 
 	memset(&event, 0, sizeof event);
@@ -950,6 +957,8 @@ static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
 		event.event = RDMA_CM_EVENT_DISCONNECTED;
 		break;
 	case IB_CM_TIMEWAIT_EXIT:
+		event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT;
+		break;
 	case IB_CM_MRA_RECEIVED:
 		/* ignore event */
 		goto out;
@@ -1015,7 +1024,7 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id,
 		rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path;
 
 	ib_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid);
-	ret = rdma_translate_ip(&id->route.addr.src_addr,
+	ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr,
 				&id->route.addr.dev_addr);
 	if (ret)
 		goto destroy_id;
@@ -1053,7 +1062,7 @@ static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id,
 	cma_save_net_info(&id->route.addr, &listen_id->route.addr,
 			  ip_ver, port, src, dst);
 
-	ret = rdma_translate_ip(&id->route.addr.src_addr,
+	ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr,
 				&id->route.addr.dev_addr);
 	if (ret)
 		goto err;
@@ -1366,7 +1375,7 @@ static int cma_ib_listen(struct rdma_id_private *id_priv)
 	if (IS_ERR(id_priv->cm_id.ib))
 		return PTR_ERR(id_priv->cm_id.ib);
 
-	addr = &id_priv->id.route.addr.src_addr;
+	addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr;
 	svc_id = cma_get_service_id(id_priv->id.ps, addr);
 	if (cma_any_addr(addr))
 		ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL);
@@ -1432,7 +1441,7 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
 
 	dev_id_priv->state = CMA_ADDR_BOUND;
 	memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr,
-	       ip_addr_size(&id_priv->id.route.addr.src_addr));
+	       ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr));
 
 	cma_attach_to_dev(dev_id_priv, cma_dev);
 	list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list);
@@ -1552,13 +1561,14 @@ static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms,
 	path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr));
 	path_rec.numb_path = 1;
 	path_rec.reversible = 1;
-	path_rec.service_id = cma_get_service_id(id_priv->id.ps, &addr->dst_addr);
+	path_rec.service_id = cma_get_service_id(id_priv->id.ps,
+							(struct sockaddr *) &addr->dst_addr);
 
 	comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID |
 		    IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH |
 		    IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID;
 
-	if (addr->src_addr.sa_family == AF_INET) {
+	if (addr->src_addr.ss_family == AF_INET) {
 		path_rec.qos_class = cpu_to_be16((u16) id_priv->tos);
 		comp_mask |= IB_SA_PATH_REC_QOS_CLASS;
 	} else {
@@ -1598,6 +1608,30 @@ out:
 	kfree(work);
 }
 
+static void cma_ndev_work_handler(struct work_struct *_work)
+{
+	struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work);
+	struct rdma_id_private *id_priv = work->id;
+	int destroy = 0;
+
+	mutex_lock(&id_priv->handler_mutex);
+	if (id_priv->state == CMA_DESTROYING ||
+	    id_priv->state == CMA_DEVICE_REMOVAL)
+		goto out;
+
+	if (id_priv->id.event_handler(&id_priv->id, &work->event)) {
+		cma_exch(id_priv, CMA_DESTROYING);
+		destroy = 1;
+	}
+
+out:
+	mutex_unlock(&id_priv->handler_mutex);
+	cma_deref_id(id_priv);
+	if (destroy)
+		rdma_destroy_id(&id_priv->id);
+	kfree(work);
+}
+
 static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms)
 {
 	struct rdma_route *route = &id_priv->id.route;
@@ -1813,7 +1847,7 @@ static int cma_resolve_loopback(struct rdma_id_private *id_priv)
 	ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);
 	ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid);
 
-	if (cma_zero_addr(&id_priv->id.route.addr.src_addr)) {
+	if (cma_zero_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)) {
 		src_in = (struct sockaddr_in *)&id_priv->id.route.addr.src_addr;
 		dst_in = (struct sockaddr_in *)&id_priv->id.route.addr.dst_addr;
 		src_in->sin_family = dst_in->sin_family;
@@ -1862,7 +1896,7 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
 	if (cma_any_addr(dst_addr))
 		ret = cma_resolve_loopback(id_priv);
 	else
-		ret = rdma_resolve_ip(&addr_client, &id->route.addr.src_addr,
+		ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr,
 				      dst_addr, &id->route.addr.dev_addr,
 				      timeout_ms, addr_handler, id_priv);
 	if (ret)
@@ -1986,11 +2020,11 @@ static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv)
 	 * We don't support binding to any address if anyone is bound to
 	 * a specific address on the same port.
 	 */
-	if (cma_any_addr(&id_priv->id.route.addr.src_addr))
+	if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr))
 		return -EADDRNOTAVAIL;
 
 	hlist_for_each_entry(cur_id, node, &bind_list->owners, node) {
-		if (cma_any_addr(&cur_id->id.route.addr.src_addr))
+		if (cma_any_addr((struct sockaddr *) &cur_id->id.route.addr.src_addr))
 			return -EADDRNOTAVAIL;
 
 		cur_sin = (struct sockaddr_in *) &cur_id->id.route.addr.src_addr;
@@ -2025,7 +2059,7 @@ static int cma_get_port(struct rdma_id_private *id_priv)
 	}
 
 	mutex_lock(&lock);
-	if (cma_any_port(&id_priv->id.route.addr.src_addr))
+	if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr))
 		ret = cma_alloc_any_port(ps, id_priv);
 	else
 		ret = cma_use_port(ps, id_priv);
@@ -2197,7 +2231,7 @@ static int cma_resolve_ib_udp(struct rdma_id_private *id_priv,
 
 	req.path = route->path_rec;
 	req.service_id = cma_get_service_id(id_priv->id.ps,
-					    &route->addr.dst_addr);
+					    (struct sockaddr *) &route->addr.dst_addr);
 	req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8);
 	req.max_cm_retries = CMA_MAX_CM_RETRIES;
 
@@ -2248,7 +2282,7 @@ static int cma_connect_ib(struct rdma_id_private *id_priv,
 		req.alternate_path = &route->path_rec[1];
 
 	req.service_id = cma_get_service_id(id_priv->id.ps,
-					    &route->addr.dst_addr);
+					    (struct sockaddr *) &route->addr.dst_addr);
 	req.qp_num = id_priv->qp_num;
 	req.qp_type = IB_QPT_RC;
 	req.starting_psn = id_priv->seq_num;
@@ -2632,7 +2666,7 @@ static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
 	if (ret)
 		return ret;
 
-	cma_set_mgid(id_priv, &mc->addr, &rec.mgid);
+	cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid);
 	if (id_priv->id.ps == RDMA_PS_UDP)
 		rec.qkey = cpu_to_be32(RDMA_UDP_QKEY);
 	ib_addr_get_sgid(dev_addr, &rec.port_gid);
@@ -2723,6 +2757,65 @@ void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)
 }
 EXPORT_SYMBOL(rdma_leave_multicast);
 
+static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv)
+{
+	struct rdma_dev_addr *dev_addr;
+	struct cma_ndev_work *work;
+
+	dev_addr = &id_priv->id.route.addr.dev_addr;
+
+	if ((dev_addr->src_dev == ndev) &&
+	    memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) {
+		printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n",
+		       ndev->name, &id_priv->id);
+		work = kzalloc(sizeof *work, GFP_KERNEL);
+		if (!work)
+			return -ENOMEM;
+
+		INIT_WORK(&work->work, cma_ndev_work_handler);
+		work->id = id_priv;
+		work->event.event = RDMA_CM_EVENT_ADDR_CHANGE;
+		atomic_inc(&id_priv->refcount);
+		queue_work(cma_wq, &work->work);
+	}
+
+	return 0;
+}
+
+static int cma_netdev_callback(struct notifier_block *self, unsigned long event,
+			       void *ctx)
+{
+	struct net_device *ndev = (struct net_device *)ctx;
+	struct cma_device *cma_dev;
+	struct rdma_id_private *id_priv;
+	int ret = NOTIFY_DONE;
+
+	if (dev_net(ndev) != &init_net)
+		return NOTIFY_DONE;
+
+	if (event != NETDEV_BONDING_FAILOVER)
+		return NOTIFY_DONE;
+
+	if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING))
+		return NOTIFY_DONE;
+
+	mutex_lock(&lock);
+	list_for_each_entry(cma_dev, &dev_list, list)
+		list_for_each_entry(id_priv, &cma_dev->id_list, list) {
+			ret = cma_netdev_change(ndev, id_priv);
+			if (ret)
+				goto out;
+		}
+
+out:
+	mutex_unlock(&lock);
+	return ret;
+}
+
+static struct notifier_block cma_nb = {
+	.notifier_call = cma_netdev_callback
+};
+
 static void cma_add_one(struct ib_device *device)
 {
 	struct cma_device *cma_dev;
@@ -2831,6 +2924,7 @@ static int cma_init(void)
 
 	ib_sa_register_client(&sa_client);
 	rdma_addr_register_client(&addr_client);
+	register_netdevice_notifier(&cma_nb);
 
 	ret = ib_register_client(&cma_client);
 	if (ret)
@@ -2838,6 +2932,7 @@ static int cma_init(void)
 	return 0;
 
 err:
+	unregister_netdevice_notifier(&cma_nb);
 	rdma_addr_unregister_client(&addr_client);
 	ib_sa_unregister_client(&sa_client);
 	destroy_workqueue(cma_wq);
@@ -2847,6 +2942,7 @@ err:
 static void cma_cleanup(void)
 {
 	ib_unregister_client(&cma_client);
+	unregister_netdevice_notifier(&cma_nb);
 	rdma_addr_unregister_client(&addr_client);
 	ib_sa_unregister_client(&sa_client);
 	destroy_workqueue(cma_wq);