RDMA/cma: Add IPv6 support for iWARP

Modify the type of local_addr and remote_addr fields in struct
iw_cm_id from struct sockaddr_in to struct sockaddr_storage to hold
IPv6 and IPv4 addresses uniformly.

Change the references of local_addr and remote_addr in cxgb4, cxgb3,
nes and amso drivers to match this.  However to be able to actully run
traffic over IPv6, low-level drivers have to add code to support this.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>

[ Fix unused variable warnings when INFINIBAND_NES_DEBUG not set.
  - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>

drivers/infiniband/core/cma.c

@@ -1385,8 +1385,9 @@ static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event)
 {
 	struct rdma_id_private *id_priv = iw_id->context;
 	struct rdma_cm_event event;
-	struct sockaddr_in *sin;
 	int ret = 0;
+	struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr;
+	struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr;
 
 	if (cma_disable_callback(id_priv, RDMA_CM_CONNECT))
 		return 0;
@@ -1397,10 +1398,10 @@ static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event)
 		event.event = RDMA_CM_EVENT_DISCONNECTED;
 		break;
 	case IW_CM_EVENT_CONNECT_REPLY:
-		sin = (struct sockaddr_in *) cma_src_addr(id_priv);
-		*sin = iw_event->local_addr;
-		sin = (struct sockaddr_in *) cma_dst_addr(id_priv);
-		*sin = iw_event->remote_addr;
+		memcpy(cma_src_addr(id_priv), laddr,
+		       rdma_addr_size(laddr));
+		memcpy(cma_dst_addr(id_priv), raddr,
+		       rdma_addr_size(raddr));
 		switch (iw_event->status) {
 		case 0:
 			event.event = RDMA_CM_EVENT_ESTABLISHED;
@@ -1450,11 +1451,12 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
 {
 	struct rdma_cm_id *new_cm_id;
 	struct rdma_id_private *listen_id, *conn_id;
-	struct sockaddr_in *sin;
 	struct net_device *dev = NULL;
 	struct rdma_cm_event event;
 	int ret;
 	struct ib_device_attr attr;
+	struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr;
+	struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr;
 
 	listen_id = cm_id->context;
 	if (cma_disable_callback(listen_id, RDMA_CM_LISTEN))
@@ -1472,14 +1474,7 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
 	mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);
 	conn_id->state = RDMA_CM_CONNECT;
 
-	dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr);
-	if (!dev) {
-		ret = -EADDRNOTAVAIL;
-		mutex_unlock(&conn_id->handler_mutex);
-		rdma_destroy_id(new_cm_id);
-		goto out;
-	}
-	ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL);
+	ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr);
 	if (ret) {
 		mutex_unlock(&conn_id->handler_mutex);
 		rdma_destroy_id(new_cm_id);
@@ -1497,10 +1492,8 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
 	cm_id->context = conn_id;
 	cm_id->cm_handler = cma_iw_handler;
 
-	sin = (struct sockaddr_in *) cma_src_addr(conn_id);
-	*sin = iw_event->local_addr;
-	sin = (struct sockaddr_in *) cma_dst_addr(conn_id);
-	*sin = iw_event->remote_addr;
+	memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr));
+	memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr));
 
 	ret = ib_query_device(conn_id->id.device, &attr);
 	if (ret) {
@@ -1576,7 +1569,6 @@ static int cma_ib_listen(struct rdma_id_private *id_priv)
 static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog)
 {
 	int ret;
-	struct sockaddr_in *sin;
 	struct iw_cm_id	*id;
 
 	id = iw_create_cm_id(id_priv->id.device,
@@ -1587,8 +1579,8 @@ static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog)
 
 	id_priv->cm_id.iw = id;
 
-	sin = (struct sockaddr_in *) cma_src_addr(id_priv);
-	id_priv->cm_id.iw->local_addr = *sin;
+	memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv),
+	       rdma_addr_size(cma_src_addr(id_priv)));
 
 	ret = iw_cm_listen(id_priv->cm_id.iw, backlog);
 
@@ -2803,7 +2795,6 @@ static int cma_connect_iw(struct rdma_id_private *id_priv,
 			  struct rdma_conn_param *conn_param)
 {
 	struct iw_cm_id *cm_id;
-	struct sockaddr_in* sin;
 	int ret;
 	struct iw_cm_conn_param iw_param;
 
@@ -2813,11 +2804,10 @@ static int cma_connect_iw(struct rdma_id_private *id_priv,
 
 	id_priv->cm_id.iw = cm_id;
 
-	sin = (struct sockaddr_in *) cma_src_addr(id_priv);
-	cm_id->local_addr = *sin;
-
-	sin = (struct sockaddr_in *) cma_dst_addr(id_priv);
-	cm_id->remote_addr = *sin;
+	memcpy(&cm_id->local_addr, cma_src_addr(id_priv),
+	       rdma_addr_size(cma_src_addr(id_priv)));
+	memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv),
+	       rdma_addr_size(cma_dst_addr(id_priv)));
 
 	ret = cma_modify_qp_rtr(id_priv, conn_param);
 	if (ret)

drivers/infiniband/hw/amso1100/c2_ae.c

@@ -155,6 +155,8 @@ void c2_ae_event(struct c2_dev *c2dev, u32 mq_index)
 	enum c2_event_id event_id;
 	unsigned long flags;
 	int status;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event.local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event.remote_addr;
 
 	/*
 	 * retrieve the message
@@ -206,10 +208,10 @@ void c2_ae_event(struct c2_dev *c2dev, u32 mq_index)
 		case CCAE_ACTIVE_CONNECT_RESULTS:
 			res = &wr->ae.ae_active_connect_results;
 			cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
-			cm_event.local_addr.sin_addr.s_addr = res->laddr;
-			cm_event.remote_addr.sin_addr.s_addr = res->raddr;
-			cm_event.local_addr.sin_port = res->lport;
-			cm_event.remote_addr.sin_port =	res->rport;
+			laddr->sin_addr.s_addr = res->laddr;
+			raddr->sin_addr.s_addr = res->raddr;
+			laddr->sin_port = res->lport;
+			raddr->sin_port = res->rport;
 			if (status == 0) {
 				cm_event.private_data_len =
 					be32_to_cpu(res->private_data_length);
@@ -281,10 +283,10 @@ void c2_ae_event(struct c2_dev *c2dev, u32 mq_index)
 		}
 		cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
 		cm_event.provider_data = (void*)(unsigned long)req->cr_handle;
-		cm_event.local_addr.sin_addr.s_addr = req->laddr;
-		cm_event.remote_addr.sin_addr.s_addr = req->raddr;
-		cm_event.local_addr.sin_port = req->lport;
-		cm_event.remote_addr.sin_port = req->rport;
+		laddr->sin_addr.s_addr = req->laddr;
+		raddr->sin_addr.s_addr = req->raddr;
+		laddr->sin_port = req->lport;
+		raddr->sin_port = req->rport;
 		cm_event.private_data_len =
 			be32_to_cpu(req->private_data_length);
 		cm_event.private_data = req->private_data;

drivers/infiniband/hw/amso1100/c2_cm.c

@@ -46,6 +46,10 @@ int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
 	struct c2wr_qp_connect_req *wr;	/* variable size needs a malloc. */
 	struct c2_vq_req *vq_req;
 	int err;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
+
+	if (cm_id->remote_addr.ss_family != AF_INET)
+		return -ENOSYS;
 
 	ibqp = c2_get_qp(cm_id->device, iw_param->qpn);
 	if (!ibqp)
@@ -91,8 +95,8 @@ int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
 	wr->rnic_handle = c2dev->adapter_handle;
 	wr->qp_handle = qp->adapter_handle;
 
-	wr->remote_addr = cm_id->remote_addr.sin_addr.s_addr;
-	wr->remote_port = cm_id->remote_addr.sin_port;
+	wr->remote_addr = raddr->sin_addr.s_addr;
+	wr->remote_port = raddr->sin_port;
 
 	/*
 	 * Move any private data from the callers's buf into
@@ -135,6 +139,10 @@ int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog)
 	struct c2wr_ep_listen_create_rep *reply;
 	struct c2_vq_req *vq_req;
 	int err;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
+
+	if (cm_id->local_addr.ss_family != AF_INET)
+		return -ENOSYS;
 
 	c2dev = to_c2dev(cm_id->device);
 	if (c2dev == NULL)
@@ -153,8 +161,8 @@ int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog)
 	c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE);
 	wr.hdr.context = (u64) (unsigned long) vq_req;
 	wr.rnic_handle = c2dev->adapter_handle;
-	wr.local_addr = cm_id->local_addr.sin_addr.s_addr;
-	wr.local_port = cm_id->local_addr.sin_port;
+	wr.local_addr = laddr->sin_addr.s_addr;
+	wr.local_port = laddr->sin_port;
 	wr.backlog = cpu_to_be32(backlog);
 	wr.user_context = (u64) (unsigned long) cm_id;
 

drivers/infiniband/hw/cxgb3/iwch_cm.c

@@ -721,8 +721,10 @@ static void connect_reply_upcall(struct iwch_ep *ep, int status)
 	memset(&event, 0, sizeof(event));
 	event.event = IW_CM_EVENT_CONNECT_REPLY;
 	event.status = status;
-	event.local_addr = ep->com.local_addr;
-	event.remote_addr = ep->com.remote_addr;
+	memcpy(&event.local_addr, &ep->com.local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&event.remote_addr, &ep->com.remote_addr,
+	       sizeof(ep->com.remote_addr));
 
 	if ((status == 0) || (status == -ECONNREFUSED)) {
 		event.private_data_len = ep->plen;
@@ -747,8 +749,10 @@ static void connect_request_upcall(struct iwch_ep *ep)
 	PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid);
 	memset(&event, 0, sizeof(event));
 	event.event = IW_CM_EVENT_CONNECT_REQUEST;
-	event.local_addr = ep->com.local_addr;
-	event.remote_addr = ep->com.remote_addr;
+	memcpy(&event.local_addr, &ep->com.local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&event.remote_addr, &ep->com.remote_addr,
+	       sizeof(ep->com.local_addr));
 	event.private_data_len = ep->plen;
 	event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
 	event.provider_data = ep;
@@ -1872,8 +1876,9 @@ int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 static int is_loopback_dst(struct iw_cm_id *cm_id)
 {
 	struct net_device *dev;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
 
-	dev = ip_dev_find(&init_net, cm_id->remote_addr.sin_addr.s_addr);
+	dev = ip_dev_find(&init_net, raddr->sin_addr.s_addr);
 	if (!dev)
 		return 0;
 	dev_put(dev);
@@ -1886,6 +1891,13 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	struct iwch_ep *ep;
 	struct rtable *rt;
 	int err = 0;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
+
+	if (cm_id->remote_addr.ss_family != PF_INET) {
+		err = -ENOSYS;
+		goto out;
+	}
 
 	if (is_loopback_dst(cm_id)) {
 		err = -ENOSYS;
@@ -1929,11 +1941,9 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	}
 
 	/* find a route */
-	rt = find_route(h->rdev.t3cdev_p,
-			cm_id->local_addr.sin_addr.s_addr,
-			cm_id->remote_addr.sin_addr.s_addr,
-			cm_id->local_addr.sin_port,
-			cm_id->remote_addr.sin_port, IPTOS_LOWDELAY);
+	rt = find_route(h->rdev.t3cdev_p, laddr->sin_addr.s_addr,
+			raddr->sin_addr.s_addr, laddr->sin_port,
+			raddr->sin_port, IPTOS_LOWDELAY);
 	if (!rt) {
 		printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
 		err = -EHOSTUNREACH;
@@ -1941,7 +1951,7 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	}
 	ep->dst = &rt->dst;
 	ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst, NULL,
-			     &cm_id->remote_addr.sin_addr.s_addr);
+			     &raddr->sin_addr.s_addr);
 	if (!ep->l2t) {
 		printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
 		err = -ENOMEM;
@@ -1950,8 +1960,10 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 
 	state_set(&ep->com, CONNECTING);
 	ep->tos = IPTOS_LOWDELAY;
-	ep->com.local_addr = cm_id->local_addr;
-	ep->com.remote_addr = cm_id->remote_addr;
+	memcpy(&ep->com.local_addr, &cm_id->local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&ep->com.remote_addr, &cm_id->remote_addr,
+	       sizeof(ep->com.remote_addr));
 
 	/* send connect request to rnic */
 	err = send_connect(ep);
@@ -1979,6 +1991,11 @@ int iwch_create_listen(struct iw_cm_id *cm_id, int backlog)
 
 	might_sleep();
 
+	if (cm_id->local_addr.ss_family != PF_INET) {
+		err = -ENOSYS;
+		goto fail1;
+	}
+
 	ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
 	if (!ep) {
 		printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
@@ -1990,7 +2007,8 @@ int iwch_create_listen(struct iw_cm_id *cm_id, int backlog)
 	cm_id->add_ref(cm_id);
 	ep->com.cm_id = cm_id;
 	ep->backlog = backlog;
-	ep->com.local_addr = cm_id->local_addr;
+	memcpy(&ep->com.local_addr, &cm_id->local_addr,
+	       sizeof(ep->com.local_addr));
 
 	/*
 	 * Allocate a server TID.

drivers/infiniband/hw/cxgb4/cm.c

@@ -952,8 +952,10 @@ static void connect_reply_upcall(struct c4iw_ep *ep, int status)
 	memset(&event, 0, sizeof(event));
 	event.event = IW_CM_EVENT_CONNECT_REPLY;
 	event.status = status;
-	event.local_addr = ep->com.local_addr;
-	event.remote_addr = ep->com.remote_addr;
+	memcpy(&event.local_addr, &ep->com.local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&event.remote_addr, &ep->com.remote_addr,
+	       sizeof(ep->com.remote_addr));
 
 	if ((status == 0) || (status == -ECONNREFUSED)) {
 		if (!ep->tried_with_mpa_v1) {
@@ -989,8 +991,10 @@ static void connect_request_upcall(struct c4iw_ep *ep)
 	PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
 	memset(&event, 0, sizeof(event));
 	event.event = IW_CM_EVENT_CONNECT_REQUEST;
-	event.local_addr = ep->com.local_addr;
-	event.remote_addr = ep->com.remote_addr;
+	memcpy(&event.local_addr, &ep->com.local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&event.remote_addr, &ep->com.remote_addr,
+	       sizeof(ep->com.remote_addr));
 	event.provider_data = ep;
 	if (!ep->tried_with_mpa_v1) {
 		/* this means MPA_v2 is used */
@@ -1568,6 +1572,10 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
 	struct net_device *pdev;
 	int step;
 	struct neighbour *neigh;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)
+				    &ep->com.cm_id->local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)
+				    &ep->com.cm_id->remote_addr;
 
 	PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
 	init_timer(&ep->timer);
@@ -1585,10 +1593,8 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
 
 	/* find a route */
 	rt = find_route(ep->com.dev,
-			ep->com.cm_id->local_addr.sin_addr.s_addr,
-			ep->com.cm_id->remote_addr.sin_addr.s_addr,
-			ep->com.cm_id->local_addr.sin_port,
-			ep->com.cm_id->remote_addr.sin_port, 0);
+			laddr->sin_addr.s_addr, raddr->sin_addr.s_addr,
+			laddr->sin_port, raddr->sin_port, 0);
 	if (!rt) {
 		pr_err("%s - cannot find route.\n", __func__);
 		err = -EHOSTUNREACH;
@@ -1596,8 +1602,7 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
 	}
 	ep->dst = &rt->dst;
 
-	neigh = dst_neigh_lookup(ep->dst,
-			&ep->com.cm_id->remote_addr.sin_addr.s_addr);
+	neigh = dst_neigh_lookup(ep->dst, &raddr->sin_addr.s_addr);
 	if (!neigh) {
 		pr_err("%s - cannot alloc neigh.\n", __func__);
 		err = -ENOMEM;
@@ -1607,8 +1612,7 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
 	/* get a l2t entry */
 	if (neigh->dev->flags & IFF_LOOPBACK) {
 		PDBG("%s LOOPBACK\n", __func__);
-		pdev = ip_dev_find(&init_net,
-				ep->com.cm_id->remote_addr.sin_addr.s_addr);
+		pdev = ip_dev_find(&init_net, raddr->sin_addr.s_addr);
 		ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
 				neigh, pdev, 0);
 		pi = (struct port_info *)netdev_priv(pdev);
@@ -2518,6 +2522,8 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	struct c4iw_ep *ep;
 	struct rtable *rt;
 	int err = 0;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
 
 	if ((conn_param->ord > c4iw_max_read_depth) ||
 	    (conn_param->ird > c4iw_max_read_depth)) {
@@ -2562,17 +2568,12 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	insert_handle(dev, &dev->atid_idr, ep, ep->atid);
 
 	PDBG("%s saddr 0x%x sport 0x%x raddr 0x%x rport 0x%x\n", __func__,
-	     ntohl(cm_id->local_addr.sin_addr.s_addr),
-	     ntohs(cm_id->local_addr.sin_port),
-	     ntohl(cm_id->remote_addr.sin_addr.s_addr),
-	     ntohs(cm_id->remote_addr.sin_port));
+	     ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port),
+	     ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port));
 
 	/* find a route */
-	rt = find_route(dev,
-			cm_id->local_addr.sin_addr.s_addr,
-			cm_id->remote_addr.sin_addr.s_addr,
-			cm_id->local_addr.sin_port,
-			cm_id->remote_addr.sin_port, 0);
+	rt = find_route(dev, laddr->sin_addr.s_addr, raddr->sin_addr.s_addr,
+			laddr->sin_port, raddr->sin_port, 0);
 	if (!rt) {
 		printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
 		err = -EHOSTUNREACH;
@@ -2580,8 +2581,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	}
 	ep->dst = &rt->dst;
 
-	err = import_ep(ep, cm_id->remote_addr.sin_addr.s_addr,
-			ep->dst, ep->com.dev, true);
+	err = import_ep(ep, raddr->sin_addr.s_addr, ep->dst, ep->com.dev, true);
 	if (err) {
 		printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
 		goto fail4;
@@ -2593,8 +2593,10 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 
 	state_set(&ep->com, CONNECTING);
 	ep->tos = 0;
-	ep->com.local_addr = cm_id->local_addr;
-	ep->com.remote_addr = cm_id->remote_addr;
+	memcpy(&ep->com.local_addr, &cm_id->local_addr,
+	       sizeof(ep->com.local_addr));
+	memcpy(&ep->com.remote_addr, &cm_id->remote_addr,
+	       sizeof(ep->com.remote_addr));
 
 	/* send connect request to rnic */
 	err = send_connect(ep);
@@ -2633,7 +2635,8 @@ int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
 	ep->com.cm_id = cm_id;
 	ep->com.dev = dev;
 	ep->backlog = backlog;
-	ep->com.local_addr = cm_id->local_addr;
+	memcpy(&ep->com.local_addr, &cm_id->local_addr,
+	       sizeof(ep->com.local_addr));
 
 	/*
 	 * Allocate a server TID.

include/rdma/iw_cm.h

@@ -49,8 +49,8 @@ enum iw_cm_event_type {
 struct iw_cm_event {
 	enum iw_cm_event_type event;
 	int			 status;
-	struct sockaddr_in local_addr;
-	struct sockaddr_in remote_addr;
+	struct sockaddr_storage local_addr;
+	struct sockaddr_storage remote_addr;
 	void *private_data;
 	void *provider_data;
 	u8 private_data_len;
@@ -83,8 +83,8 @@ struct iw_cm_id {
 	iw_cm_handler		cm_handler;      /* client callback function */
 	void		        *context;	 /* client cb context */
 	struct ib_device	*device;
-	struct sockaddr_in      local_addr;
-	struct sockaddr_in	remote_addr;
+	struct sockaddr_storage local_addr;
+	struct sockaddr_storage	remote_addr;
 	void			*provider_data;	 /* provider private data */
 	iw_event_handler        event_handler;   /* cb for provider
 						    events */