1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
4  * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
5  * Copyright (c) 1999-2019, Mellanox Technologies, Inc. All rights reserved.
6  * Copyright (c) 2005-2006 Intel Corporation.  All rights reserved.
65 	[RDMA_CM_EVENT_DEVICE_REMOVAL]	 = "device removal",
84 const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id,  in rdma_reject_msg()  argument
87 	if (rdma_ib_or_roce(id->device, id->port_num))  in rdma_reject_msg()
90 	if (rdma_protocol_iwarp(id->device, id->port_num))  in rdma_reject_msg()
99  * rdma_is_consumer_reject - return true if the consumer rejected the connect
101  * @id: Communication identifier that received the REJECT event.
104 static bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason)  in rdma_is_consumer_reject()  argument
106 	if (rdma_ib_or_roce(id->device, id->port_num))  in rdma_is_consumer_reject()
109 	if (rdma_protocol_iwarp(id->device, id->port_num))  in rdma_is_consumer_reject()
110 		return reason == -ECONNREFUSED;  in rdma_is_consumer_reject()
116 const void *rdma_consumer_reject_data(struct rdma_cm_id *id,  in rdma_consumer_reject_data()  argument
121 	if (rdma_is_consumer_reject(id, ev->status)) {  in rdma_consumer_reject_data()
122 		*data_len = ev->param.conn.private_data_len;  in rdma_consumer_reject_data()
123 		p = ev->param.conn.private_data;  in rdma_consumer_reject_data()
133  * rdma_iw_cm_id() - return the iw_cm_id pointer for this cm_id.
134  * @id: Communication Identifier
136 struct iw_cm_id *rdma_iw_cm_id(struct rdma_cm_id *id)  in rdma_iw_cm_id()  argument
140 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_iw_cm_id()
141 	if (id->device->node_type == RDMA_NODE_RNIC)  in rdma_iw_cm_id()
142 		return id_priv->cm_id.iw;  in rdma_iw_cm_id()
148  * rdma_res_to_id() - return the rdma_cm_id pointer for this restrack.
156 	return &id_priv->id;  in rdma_res_to_id()
160 static int cma_add_one(struct ib_device *device);
161 static void cma_remove_one(struct ib_device *device, void *client_data);
198 		return &pernet->tcp_ps;  in cma_pernet_xa()
200 		return &pernet->udp_ps;  in cma_pernet_xa()
202 		return &pernet->ipoib_ps;  in cma_pernet_xa()
204 		return &pernet->ib_ps;  in cma_pernet_xa()
217 	struct ib_device	*device;  member
261 	refcount_inc(&cma_dev->refcount);  in cma_dev_get()
266 	if (refcount_dec_and_test(&cma_dev->refcount))  in cma_dev_put()
267 		complete(&cma_dev->comp);  in cma_dev_put()
279 		if (filter(cma_dev->device, cookie)) {  in cma_enum_devices_by_ibdev()
293 	if (!rdma_is_port_valid(cma_dev->device, port))  in cma_get_default_gid_type()
294 		return -EINVAL;  in cma_get_default_gid_type()
296 	return cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)];  in cma_get_default_gid_type()
305 	if (!rdma_is_port_valid(cma_dev->device, port))  in cma_set_default_gid_type()
306 		return -EINVAL;  in cma_set_default_gid_type()
309 	    rdma_protocol_roce_eth_encap(cma_dev->device, port))  in cma_set_default_gid_type()
312 	supported_gids = roce_gid_type_mask_support(cma_dev->device, port);  in cma_set_default_gid_type()
315 		return -EINVAL;  in cma_set_default_gid_type()
317 	cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)] =  in cma_set_default_gid_type()
325 	if (!rdma_is_port_valid(cma_dev->device, port))  in cma_get_default_roce_tos()
326 		return -EINVAL;  in cma_get_default_roce_tos()
328 	return cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)];  in cma_get_default_roce_tos()
334 	if (!rdma_is_port_valid(cma_dev->device, port))  in cma_set_default_roce_tos()
335 		return -EINVAL;  in cma_set_default_roce_tos()
337 	cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)] =  in cma_set_default_roce_tos()
344 	return cma_dev->device;  in cma_get_ib_dev()
348  * Device removal can occur at anytime, so we need extra handling to
349  * serialize notifying the user of device removal with other callbacks.
371 	struct rdma_id_private	*id;  member
398 	struct ib_device *device;  member
419 		lockdep_assert_held(&id_priv->handler_mutex);  in cma_comp_exch()
421 	spin_lock_irqsave(&id_priv->lock, flags);  in cma_comp_exch()
422 	if ((ret = (id_priv->state == comp)))  in cma_comp_exch()
423 		id_priv->state = exch;  in cma_comp_exch()
424 	spin_unlock_irqrestore(&id_priv->lock, flags);  in cma_comp_exch()
430 	return hdr->ip_version >> 4;  in cma_get_ip_ver()
435 	hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF);  in cma_set_ip_ver()
440 	return (struct sockaddr *)&id_priv->id.route.addr.src_addr;  in cma_src_addr()
445 	return (struct sockaddr *)&id_priv->id.route.addr.dst_addr;  in cma_dst_addr()
458 						*(__be32 *)(mgid->raw + 12));  in cma_igmp_send()
461 						*(__be32 *)(mgid->raw + 12));  in cma_igmp_send()
465 	return (in_dev) ? 0 : -ENODEV;  in cma_igmp_send()
472 		&entry_b->id_list, struct rdma_id_private, id_list_entry);  in compare_netdev_and_ip()
473 	int ifindex_b = id_priv->id.route.addr.dev_addr.bound_dev_if;  in compare_netdev_and_ip()
477 		return (ifindex_a > ifindex_b) ? 1 : -1;  in compare_netdev_and_ip()
479 	if (sa->sa_family != sb->sa_family)  in compare_netdev_and_ip()
480 		return sa->sa_family - sb->sa_family;  in compare_netdev_and_ip()
482 	if (sa->sa_family == AF_INET)  in compare_netdev_and_ip()
483 		return memcmp((char *)&((struct sockaddr_in *)sa)->sin_addr,  in compare_netdev_and_ip()
484 			      (char *)&((struct sockaddr_in *)sb)->sin_addr,  in compare_netdev_and_ip()
485 			      sizeof(((struct sockaddr_in *)sa)->sin_addr));  in compare_netdev_and_ip()
487 	return ipv6_addr_cmp(&((struct sockaddr_in6 *)sa)->sin6_addr,  in compare_netdev_and_ip()
488 			     &((struct sockaddr_in6 *)sb)->sin6_addr);  in compare_netdev_and_ip()
500 		return -ENOMEM;  in cma_add_id_to_tree()
507 			node_id_priv->id.route.addr.dev_addr.bound_dev_if,  in cma_add_id_to_tree()
512 			new = &((*new)->rb_left);  in cma_add_id_to_tree()
514 			new = &((*new)->rb_right);  in cma_add_id_to_tree()
516 			list_add_tail(&node_id_priv->id_list_entry,  in cma_add_id_to_tree()
517 				      &this->id_list);  in cma_add_id_to_tree()
523 	INIT_LIST_HEAD(&node->id_list);  in cma_add_id_to_tree()
524 	list_add_tail(&node_id_priv->id_list_entry, &node->id_list);  in cma_add_id_to_tree()
526 	rb_link_node(&node->rb_node, parent, new);  in cma_add_id_to_tree()
527 	rb_insert_color(&node->rb_node, &id_table);  in cma_add_id_to_tree()
537 	struct rb_node *node = root->rb_node;  in node_from_ndev_ip()
545 			node = node->rb_left;  in node_from_ndev_ip()
547 			node = node->rb_right;  in node_from_ndev_ip()
561 	if (list_empty(&id_priv->id_list_entry))  in cma_remove_id_from_tree()
565 				 id_priv->id.route.addr.dev_addr.bound_dev_if,  in cma_remove_id_from_tree()
570 	list_del_init(&id_priv->id_list_entry);  in cma_remove_id_from_tree()
571 	if (list_empty(&data->id_list)) {  in cma_remove_id_from_tree()
572 		rb_erase(&data->rb_node, &id_table);  in cma_remove_id_from_tree()
583 	id_priv->cma_dev = cma_dev;  in _cma_attach_to_dev()
584 	id_priv->id.device = cma_dev->device;  in _cma_attach_to_dev()
585 	id_priv->id.route.addr.dev_addr.transport =  in _cma_attach_to_dev()
586 		rdma_node_get_transport(cma_dev->device->node_type);  in _cma_attach_to_dev()
587 	list_add_tail(&id_priv->device_item, &cma_dev->id_list);  in _cma_attach_to_dev()
589 	trace_cm_id_attach(id_priv, cma_dev->device);  in _cma_attach_to_dev()
596 	id_priv->gid_type =  in cma_attach_to_dev()
597 		cma_dev->default_gid_type[id_priv->id.port_num -  in cma_attach_to_dev()
598 					  rdma_start_port(cma_dev->device)];  in cma_attach_to_dev()
604 	list_del_init(&id_priv->device_item);  in cma_release_dev()
605 	cma_dev_put(id_priv->cma_dev);  in cma_release_dev()
606 	id_priv->cma_dev = NULL;  in cma_release_dev()
607 	id_priv->id.device = NULL;  in cma_release_dev()
608 	if (id_priv->id.route.addr.dev_addr.sgid_attr) {  in cma_release_dev()
609 		rdma_put_gid_attr(id_priv->id.route.addr.dev_addr.sgid_attr);  in cma_release_dev()
610 		id_priv->id.route.addr.dev_addr.sgid_attr = NULL;  in cma_release_dev()
617 	return id_priv->id.route.addr.src_addr.ss_family;  in cma_family()
625 	if (id_priv->qkey) {  in cma_set_qkey()
626 		if (qkey && id_priv->qkey != qkey)  in cma_set_qkey()
627 			return -EINVAL;  in cma_set_qkey()
632 		id_priv->qkey = qkey;  in cma_set_qkey()
636 	switch (id_priv->id.ps) {  in cma_set_qkey()
639 		id_priv->qkey = RDMA_UDP_QKEY;  in cma_set_qkey()
642 		ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid);  in cma_set_qkey()
643 		ret = ib_sa_get_mcmember_rec(id_priv->id.device,  in cma_set_qkey()
644 					     id_priv->id.port_num, &rec.mgid,  in cma_set_qkey()
647 			id_priv->qkey = be32_to_cpu(rec.qkey);  in cma_set_qkey()
657 	dev_addr->dev_type = ARPHRD_INFINIBAND;  in cma_translate_ib()
658 	rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr);  in cma_translate_ib()
659 	ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey));  in cma_translate_ib()
666 	if (addr->sa_family != AF_IB) {  in cma_translate_addr()
677 cma_validate_port(struct ib_device *device, u32 port,  in cma_validate_port()  argument
682 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_validate_port()
683 	int bound_if_index = dev_addr->bound_dev_if;  in cma_validate_port()
685 	int dev_type = dev_addr->dev_type;  in cma_validate_port()
688 	if (!rdma_dev_access_netns(device, id_priv->id.route.addr.dev_addr.net))  in cma_validate_port()
689 		return ERR_PTR(-ENODEV);  in cma_validate_port()
691 	if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port))  in cma_validate_port()
692 		return ERR_PTR(-ENODEV);  in cma_validate_port()
694 	if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port))  in cma_validate_port()
695 		return ERR_PTR(-ENODEV);  in cma_validate_port()
697 	if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) {  in cma_validate_port()
698 		ndev = dev_get_by_index(dev_addr->net, bound_if_index);  in cma_validate_port()
700 			return ERR_PTR(-ENODEV);  in cma_validate_port()
705 	sgid_attr = rdma_find_gid_by_port(device, gid, gid_type, port, ndev);  in cma_validate_port()
714 	WARN_ON(id_priv->id.route.addr.dev_addr.sgid_attr);  in cma_bind_sgid_attr()
715 	id_priv->id.route.addr.dev_addr.sgid_attr = sgid_attr;  in cma_bind_sgid_attr()
719  * cma_acquire_dev_by_src_ip - Acquire cma device, port, gid attribute
721  * @id_priv:	cm_id which should be bound to cma device
723  * cma_acquire_dev_by_src_ip() binds cm id to cma device, port and GID attribute
729 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_acquire_dev_by_src_ip()
734 	int ret = -ENODEV;  in cma_acquire_dev_by_src_ip()
737 	if (dev_addr->dev_type != ARPHRD_INFINIBAND &&  in cma_acquire_dev_by_src_ip()
738 	    id_priv->id.ps == RDMA_PS_IPOIB)  in cma_acquire_dev_by_src_ip()
739 		return -EINVAL;  in cma_acquire_dev_by_src_ip()
741 	rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr,  in cma_acquire_dev_by_src_ip()
744 	memcpy(&gid, dev_addr->src_dev_addr +  in cma_acquire_dev_by_src_ip()
749 		rdma_for_each_port (cma_dev->device, port) {  in cma_acquire_dev_by_src_ip()
750 			gidp = rdma_protocol_roce(cma_dev->device, port) ?  in cma_acquire_dev_by_src_ip()
752 			gid_type = cma_dev->default_gid_type[port - 1];  in cma_acquire_dev_by_src_ip()
753 			sgid_attr = cma_validate_port(cma_dev->device, port,  in cma_acquire_dev_by_src_ip()
756 				id_priv->id.port_num = port;  in cma_acquire_dev_by_src_ip()
770  * cma_ib_acquire_dev - Acquire cma device, port and SGID attribute
771  * @id_priv:		cm id to bind to cma device
772  * @listen_id_priv:	listener cm id to match against
775  * cma_ib_acquire_dev() acquires cma device, port and SGID attribute when
776  * rdma device matches for listen_id and incoming request. It also verifies
784 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_ib_acquire_dev()
789 	if (dev_addr->dev_type != ARPHRD_INFINIBAND &&  in cma_ib_acquire_dev()
790 	    id_priv->id.ps == RDMA_PS_IPOIB)  in cma_ib_acquire_dev()
791 		return -EINVAL;  in cma_ib_acquire_dev()
793 	if (rdma_protocol_roce(req->device, req->port))  in cma_ib_acquire_dev()
794 		rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr,  in cma_ib_acquire_dev()
797 		memcpy(&gid, dev_addr->src_dev_addr +  in cma_ib_acquire_dev()
800 	gid_type = listen_id_priv->cma_dev->default_gid_type[req->port - 1];  in cma_ib_acquire_dev()
801 	sgid_attr = cma_validate_port(req->device, req->port,  in cma_ib_acquire_dev()
806 	id_priv->id.port_num = req->port;  in cma_ib_acquire_dev()
809 	 * of cma_dev->id_list such as cma_netdev_callback() and  in cma_ib_acquire_dev()
813 	cma_attach_to_dev(id_priv, listen_id_priv->cma_dev);  in cma_ib_acquire_dev()
815 	rdma_restrack_add(&id_priv->res);  in cma_ib_acquire_dev()
822 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_iw_acquire_dev()
826 	int ret = -ENODEV;  in cma_iw_acquire_dev()
830 	if (dev_addr->dev_type != ARPHRD_INFINIBAND &&  in cma_iw_acquire_dev()
831 	    id_priv->id.ps == RDMA_PS_IPOIB)  in cma_iw_acquire_dev()
832 		return -EINVAL;  in cma_iw_acquire_dev()
834 	memcpy(&gid, dev_addr->src_dev_addr +  in cma_iw_acquire_dev()
839 	cma_dev = listen_id_priv->cma_dev;  in cma_iw_acquire_dev()
840 	port = listen_id_priv->id.port_num;  in cma_iw_acquire_dev()
841 	gid_type = listen_id_priv->gid_type;  in cma_iw_acquire_dev()
842 	sgid_attr = cma_validate_port(cma_dev->device, port,  in cma_iw_acquire_dev()
845 		id_priv->id.port_num = port;  in cma_iw_acquire_dev()
852 		rdma_for_each_port (cma_dev->device, port) {  in cma_iw_acquire_dev()
853 			if (listen_id_priv->cma_dev == cma_dev &&  in cma_iw_acquire_dev()
854 			    listen_id_priv->id.port_num == port)  in cma_iw_acquire_dev()
857 			gid_type = cma_dev->default_gid_type[port - 1];  in cma_iw_acquire_dev()
858 			sgid_attr = cma_validate_port(cma_dev->device, port,  in cma_iw_acquire_dev()
861 				id_priv->id.port_num = port;  in cma_iw_acquire_dev()
872 		rdma_restrack_add(&id_priv->res);  in cma_iw_acquire_dev()
880  * Select the source IB device and address to reach the destination IB address.
895 	dgid = (union ib_gid *) &addr->sib_addr;  in cma_resolve_ib_dev()
896 	pkey = ntohs(addr->sib_pkey);  in cma_resolve_ib_dev()
900 		rdma_for_each_port (cur_dev->device, p) {  in cma_resolve_ib_dev()
901 			if (!rdma_cap_af_ib(cur_dev->device, p))  in cma_resolve_ib_dev()
904 			if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index))  in cma_resolve_ib_dev()
907 			if (ib_get_cached_port_state(cur_dev->device, p, &port_state))  in cma_resolve_ib_dev()
910 			for (i = 0; i < cur_dev->device->port_data[p].immutable.gid_tbl_len;  in cma_resolve_ib_dev()
912 				ret = rdma_query_gid(cur_dev->device, p, i,  in cma_resolve_ib_dev()
920 					id_priv->id.port_num = p;  in cma_resolve_ib_dev()
925 				    dgid->global.subnet_prefix) &&  in cma_resolve_ib_dev()
929 					id_priv->id.port_num = p;  in cma_resolve_ib_dev()
936 	return -ENODEV;  in cma_resolve_ib_dev()
940 	rdma_restrack_add(&id_priv->res);  in cma_resolve_ib_dev()
943 	memcpy(&addr->sib_addr, &sgid, sizeof(sgid));  in cma_resolve_ib_dev()
944 	cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr);  in cma_resolve_ib_dev()
950 	refcount_inc(&id_priv->refcount);  in cma_id_get()
955 	if (refcount_dec_and_test(&id_priv->refcount))  in cma_id_put()
956 		complete(&id_priv->comp);  in cma_id_put()
968 		return ERR_PTR(-ENOMEM);  in __rdma_create_id()
970 	id_priv->state = RDMA_CM_IDLE;  in __rdma_create_id()
971 	id_priv->id.context = context;  in __rdma_create_id()
972 	id_priv->id.event_handler = event_handler;  in __rdma_create_id()
973 	id_priv->id.ps = ps;  in __rdma_create_id()
974 	id_priv->id.qp_type = qp_type;  in __rdma_create_id()
975 	id_priv->tos_set = false;  in __rdma_create_id()
976 	id_priv->timeout_set = false;  in __rdma_create_id()
977 	id_priv->min_rnr_timer_set = false;  in __rdma_create_id()
978 	id_priv->gid_type = IB_GID_TYPE_IB;  in __rdma_create_id()
979 	spin_lock_init(&id_priv->lock);  in __rdma_create_id()
980 	mutex_init(&id_priv->qp_mutex);  in __rdma_create_id()
981 	init_completion(&id_priv->comp);  in __rdma_create_id()
982 	refcount_set(&id_priv->refcount, 1);  in __rdma_create_id()
983 	mutex_init(&id_priv->handler_mutex);  in __rdma_create_id()
984 	INIT_LIST_HEAD(&id_priv->device_item);  in __rdma_create_id()
985 	INIT_LIST_HEAD(&id_priv->id_list_entry);  in __rdma_create_id()
986 	INIT_LIST_HEAD(&id_priv->listen_list);  in __rdma_create_id()
987 	INIT_LIST_HEAD(&id_priv->mc_list);  in __rdma_create_id()
988 	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);  in __rdma_create_id()
989 	id_priv->id.route.addr.dev_addr.net = get_net(net);  in __rdma_create_id()
990 	id_priv->seq_num &= 0x00ffffff;  in __rdma_create_id()
992 	rdma_restrack_new(&id_priv->res, RDMA_RESTRACK_CM_ID);  in __rdma_create_id()
994 		rdma_restrack_parent_name(&id_priv->res, &parent->res);  in __rdma_create_id()
1010 	rdma_restrack_set_name(&ret->res, caller);  in __rdma_create_kernel_id()
1011 	return &ret->id;  in __rdma_create_kernel_id()
1022 	ret = __rdma_create_id(current->nsproxy->net_ns, event_handler, context,  in rdma_create_user_id()
1027 	rdma_restrack_set_name(&ret->res, NULL);  in rdma_create_user_id()
1028 	return &ret->id;  in rdma_create_user_id()
1038 	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);  in cma_init_ud_qp()
1064 	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);  in cma_init_conn_qp()
1071 int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd,  in rdma_create_qp()  argument
1078 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_create_qp()
1079 	if (id->device != pd->device) {  in rdma_create_qp()
1080 		ret = -EINVAL;  in rdma_create_qp()
1084 	qp_init_attr->port_num = id->port_num;  in rdma_create_qp()
1091 	if (id->qp_type == IB_QPT_UD)  in rdma_create_qp()
1098 	id->qp = qp;  in rdma_create_qp()
1099 	id_priv->qp_num = qp->qp_num;  in rdma_create_qp()
1100 	id_priv->srq = (qp->srq != NULL);  in rdma_create_qp()
1111 void rdma_destroy_qp(struct rdma_cm_id *id)  in rdma_destroy_qp()  argument
1115 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_destroy_qp()
1117 	mutex_lock(&id_priv->qp_mutex);  in rdma_destroy_qp()
1118 	ib_destroy_qp(id_priv->id.qp);  in rdma_destroy_qp()
1119 	id_priv->id.qp = NULL;  in rdma_destroy_qp()
1120 	mutex_unlock(&id_priv->qp_mutex);  in rdma_destroy_qp()
1130 	mutex_lock(&id_priv->qp_mutex);  in cma_modify_qp_rtr()
1131 	if (!id_priv->id.qp) {  in cma_modify_qp_rtr()
1138 	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);  in cma_modify_qp_rtr()
1142 	ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask);  in cma_modify_qp_rtr()
1147 	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);  in cma_modify_qp_rtr()
1151 	BUG_ON(id_priv->cma_dev->device != id_priv->id.device);  in cma_modify_qp_rtr()
1154 		qp_attr.max_dest_rd_atomic = conn_param->responder_resources;  in cma_modify_qp_rtr()
1155 	ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask);  in cma_modify_qp_rtr()
1157 	mutex_unlock(&id_priv->qp_mutex);  in cma_modify_qp_rtr()
1167 	mutex_lock(&id_priv->qp_mutex);  in cma_modify_qp_rts()
1168 	if (!id_priv->id.qp) {  in cma_modify_qp_rts()
1174 	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);  in cma_modify_qp_rts()
1179 		qp_attr.max_rd_atomic = conn_param->initiator_depth;  in cma_modify_qp_rts()
1180 	ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask);  in cma_modify_qp_rts()
1182 	mutex_unlock(&id_priv->qp_mutex);  in cma_modify_qp_rts()
1191 	mutex_lock(&id_priv->qp_mutex);  in cma_modify_qp_err()
1192 	if (!id_priv->id.qp) {  in cma_modify_qp_err()
1198 	ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE);  in cma_modify_qp_err()
1200 	mutex_unlock(&id_priv->qp_mutex);  in cma_modify_qp_err()
1207 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_ib_init_qp_attr()
1211 	if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num))  in cma_ib_init_qp_attr()
1216 	ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num,  in cma_ib_init_qp_attr()
1217 				  pkey, &qp_attr->pkey_index);  in cma_ib_init_qp_attr()
1221 	qp_attr->port_num = id_priv->id.port_num;  in cma_ib_init_qp_attr()
1224 	if (id_priv->id.qp_type == IB_QPT_UD) {  in cma_ib_init_qp_attr()
1229 		qp_attr->qkey = id_priv->qkey;  in cma_ib_init_qp_attr()
1232 		qp_attr->qp_access_flags = 0;  in cma_ib_init_qp_attr()
1238 int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,  in rdma_init_qp_attr()  argument
1244 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_init_qp_attr()
1245 	if (rdma_cap_ib_cm(id->device, id->port_num)) {  in rdma_init_qp_attr()
1246 		if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD))  in rdma_init_qp_attr()
1249 			ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr,  in rdma_init_qp_attr()
1252 		if (qp_attr->qp_state == IB_QPS_RTR)  in rdma_init_qp_attr()
1253 			qp_attr->rq_psn = id_priv->seq_num;  in rdma_init_qp_attr()
1254 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {  in rdma_init_qp_attr()
1255 		if (!id_priv->cm_id.iw) {  in rdma_init_qp_attr()
1256 			qp_attr->qp_access_flags = 0;  in rdma_init_qp_attr()
1259 			ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr,  in rdma_init_qp_attr()
1261 		qp_attr->port_num = id_priv->id.port_num;  in rdma_init_qp_attr()
1264 		ret = -ENOSYS;  in rdma_init_qp_attr()
1267 	if ((*qp_attr_mask & IB_QP_TIMEOUT) && id_priv->timeout_set)  in rdma_init_qp_attr()
1268 		qp_attr->timeout = id_priv->timeout;  in rdma_init_qp_attr()
1270 	if ((*qp_attr_mask & IB_QP_MIN_RNR_TIMER) && id_priv->min_rnr_timer_set)  in rdma_init_qp_attr()
1271 		qp_attr->min_rnr_timer = id_priv->min_rnr_timer;  in rdma_init_qp_attr()
1279 	switch (addr->sa_family) {  in cma_zero_addr()
1281 		return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr);  in cma_zero_addr()
1283 		return ipv6_addr_any(&((struct sockaddr_in6 *)addr)->sin6_addr);  in cma_zero_addr()
1285 		return ib_addr_any(&((struct sockaddr_ib *)addr)->sib_addr);  in cma_zero_addr()
1293 	switch (addr->sa_family) {  in cma_loopback_addr()
1296 			((struct sockaddr_in *)addr)->sin_addr.s_addr);  in cma_loopback_addr()
1299 			&((struct sockaddr_in6 *)addr)->sin6_addr);  in cma_loopback_addr()
1302 			&((struct sockaddr_ib *)addr)->sib_addr);  in cma_loopback_addr()
1315 	if (src->sa_family != dst->sa_family)  in cma_addr_cmp()
1316 		return -1;  in cma_addr_cmp()
1318 	switch (src->sa_family) {  in cma_addr_cmp()
1320 		return ((struct sockaddr_in *)src)->sin_addr.s_addr !=  in cma_addr_cmp()
1321 		       ((struct sockaddr_in *)dst)->sin_addr.s_addr;  in cma_addr_cmp()
1327 		if (ipv6_addr_cmp(&src_addr6->sin6_addr,  in cma_addr_cmp()
1328 					  &dst_addr6->sin6_addr))  in cma_addr_cmp()
1330 		link_local = ipv6_addr_type(&dst_addr6->sin6_addr) &  in cma_addr_cmp()
1333 		return link_local ? (src_addr6->sin6_scope_id !=  in cma_addr_cmp()
1334 				     dst_addr6->sin6_scope_id) :  in cma_addr_cmp()
1339 		return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr,  in cma_addr_cmp()
1340 				   &((struct sockaddr_ib *) dst)->sib_addr);  in cma_addr_cmp()
1348 	switch (addr->sa_family) {  in cma_port()
1350 		return ((struct sockaddr_in *) addr)->sin_port;  in cma_port()
1352 		return ((struct sockaddr_in6 *) addr)->sin6_port;  in cma_port()
1355 		return htons((u16) (be64_to_cpu(sib->sib_sid) &  in cma_port()
1356 				    be64_to_cpu(sib->sib_sid_mask)));  in cma_port()
1374 	listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr;  in cma_save_ib_info()
1377 		ib->sib_family = AF_IB;  in cma_save_ib_info()
1379 			ib->sib_pkey = path->pkey;  in cma_save_ib_info()
1380 			ib->sib_flowinfo = path->flow_label;  in cma_save_ib_info()
1381 			memcpy(&ib->sib_addr, &path->sgid, 16);  in cma_save_ib_info()
1382 			ib->sib_sid = path->service_id;  in cma_save_ib_info()
1383 			ib->sib_scope_id = 0;  in cma_save_ib_info()
1385 			ib->sib_pkey = listen_ib->sib_pkey;  in cma_save_ib_info()
1386 			ib->sib_flowinfo = listen_ib->sib_flowinfo;  in cma_save_ib_info()
1387 			ib->sib_addr = listen_ib->sib_addr;  in cma_save_ib_info()
1388 			ib->sib_sid = listen_ib->sib_sid;  in cma_save_ib_info()
1389 			ib->sib_scope_id = listen_ib->sib_scope_id;  in cma_save_ib_info()
1391 		ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL);  in cma_save_ib_info()
1395 		ib->sib_family = AF_IB;  in cma_save_ib_info()
1397 			ib->sib_pkey = path->pkey;  in cma_save_ib_info()
1398 			ib->sib_flowinfo = path->flow_label;  in cma_save_ib_info()
1399 			memcpy(&ib->sib_addr, &path->dgid, 16);  in cma_save_ib_info()
1412 			.sin_addr.s_addr = hdr->dst_addr.ip4.addr,  in cma_save_ip4_info()
1420 			.sin_addr.s_addr = hdr->src_addr.ip4.addr,  in cma_save_ip4_info()
1421 			.sin_port = hdr->port,  in cma_save_ip4_info()
1434 			.sin6_addr = hdr->dst_addr.ip6,  in cma_save_ip6_info()
1442 			.sin6_addr = hdr->src_addr.ip6,  in cma_save_ip6_info()
1443 			.sin6_port = hdr->port,  in cma_save_ip6_info()
1461 	hdr = ib_event->private_data;  in cma_save_ip_info()
1462 	if (hdr->cma_version != CMA_VERSION)  in cma_save_ip_info()
1463 		return -EINVAL;  in cma_save_ip_info()
1477 		return -EAFNOSUPPORT;  in cma_save_ip_info()
1490 		if (ib_event->event == IB_CM_REQ_RECEIVED)  in cma_save_net_info()
1492 					 ib_event->param.req_rcvd.primary_path);  in cma_save_net_info()
1493 		else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED)  in cma_save_net_info()
1505 		&ib_event->param.req_rcvd;  in cma_save_req_info()
1507 		&ib_event->param.sidr_req_rcvd;  in cma_save_req_info()
1509 	switch (ib_event->event) {  in cma_save_req_info()
1511 		req->device	= req_param->listen_id->device;  in cma_save_req_info()
1512 		req->port	= req_param->port;  in cma_save_req_info()
1513 		memcpy(&req->local_gid, &req_param->primary_path->sgid,  in cma_save_req_info()
1514 		       sizeof(req->local_gid));  in cma_save_req_info()
1515 		req->has_gid	= true;  in cma_save_req_info()
1516 		req->service_id = req_param->primary_path->service_id;  in cma_save_req_info()
1517 		req->pkey	= be16_to_cpu(req_param->primary_path->pkey);  in cma_save_req_info()
1518 		if (req->pkey != req_param->bth_pkey)  in cma_save_req_info()
1521 					    req_param->bth_pkey, req->pkey);  in cma_save_req_info()
1524 		req->device	= sidr_param->listen_id->device;  in cma_save_req_info()
1525 		req->port	= sidr_param->port;  in cma_save_req_info()
1526 		req->has_gid	= false;  in cma_save_req_info()
1527 		req->service_id	= sidr_param->service_id;  in cma_save_req_info()
1528 		req->pkey	= sidr_param->pkey;  in cma_save_req_info()
1529 		if (req->pkey != sidr_param->bth_pkey)  in cma_save_req_info()
1532 					    sidr_param->bth_pkey, req->pkey);  in cma_save_req_info()
1535 		return -EINVAL;  in cma_save_req_info()
1545 	__be32 daddr = dst_addr->sin_addr.s_addr,  in validate_ipv4_net_dev()
1546 	       saddr = src_addr->sin_addr.s_addr;  in validate_ipv4_net_dev()
1559 	fl4.flowi4_oif = net_dev->ifindex;  in validate_ipv4_net_dev()
1576 	const int strict = ipv6_addr_type(&dst_addr->sin6_addr) &  in validate_ipv6_net_dev()
1578 	struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr,  in validate_ipv6_net_dev()
1579 					 &src_addr->sin6_addr, net_dev->ifindex,  in validate_ipv6_net_dev()
1586 	ret = rt->rt6i_idev->dev == net_dev;  in validate_ipv6_net_dev()
1604 	switch (daddr->sa_family) {  in validate_net_dev()
1606 		return saddr->sa_family == AF_INET &&  in validate_net_dev()
1610 		return saddr->sa_family == AF_INET6 &&  in validate_net_dev()
1624 	if (ib_event->event == IB_CM_REQ_RECEIVED)  in roce_get_net_dev_by_cm_event()
1625 		sgid_attr = ib_event->param.req_rcvd.ppath_sgid_attr;  in roce_get_net_dev_by_cm_event()
1626 	else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED)  in roce_get_net_dev_by_cm_event()
1627 		sgid_attr = ib_event->param.sidr_req_rcvd.sgid_attr;  in roce_get_net_dev_by_cm_event()
1646 			(struct sockaddr *)&req->listen_addr_storage;  in cma_get_net_dev()
1647 	struct sockaddr *src_addr = (struct sockaddr *)&req->src_addr_storage;  in cma_get_net_dev()
1649 	const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL;  in cma_get_net_dev()
1653 			       req->service_id);  in cma_get_net_dev()
1657 	if (rdma_protocol_roce(req->device, req->port))  in cma_get_net_dev()
1660 		net_dev = ib_get_net_dev_by_params(req->device, req->port,  in cma_get_net_dev()
1661 						   req->pkey,  in cma_get_net_dev()
1664 		return ERR_PTR(-ENODEV);  in cma_get_net_dev()
1681 	if (cma_any_addr(addr) && !id_priv->afonly)  in cma_match_private_data()
1684 	switch (addr->sa_family) {  in cma_match_private_data()
1686 		ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;  in cma_match_private_data()
1690 		    hdr->dst_addr.ip4.addr != ip4_addr)  in cma_match_private_data()
1694 		ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr;  in cma_match_private_data()
1698 		    memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr)))  in cma_match_private_data()
1710 static bool cma_protocol_roce(const struct rdma_cm_id *id)  in cma_protocol_roce()  argument
1712 	struct ib_device *device = id->device;  in cma_protocol_roce()  local
1713 	const u32 port_num = id->port_num ?: rdma_start_port(device);  in cma_protocol_roce()
1715 	return rdma_protocol_roce(device, port_num);  in cma_protocol_roce()
1721 			(const struct sockaddr *)&req->listen_addr_storage;  in cma_is_req_ipv6_ll()
1725 	return (daddr->sa_family == AF_INET6 &&  in cma_is_req_ipv6_ll()
1726 		(ipv6_addr_type(&daddr6->sin6_addr) & IPV6_ADDR_LINKLOCAL));  in cma_is_req_ipv6_ll()
1729 static bool cma_match_net_dev(const struct rdma_cm_id *id,  in cma_match_net_dev()  argument
1733 	const struct rdma_addr *addr = &id->route.addr;  in cma_match_net_dev()
1737 		return (!id->port_num || id->port_num == req->port) &&  in cma_match_net_dev()
1738 		       (addr->src_addr.ss_family == AF_IB);  in cma_match_net_dev()
1742 	 * request to any netdevice of the one or multiport rdma device.  in cma_match_net_dev()
1750 	if (net_eq(dev_net(net_dev), addr->dev_addr.net) &&  in cma_match_net_dev()
1751 	    (!!addr->dev_addr.bound_dev_if ==  in cma_match_net_dev()
1752 	     (addr->dev_addr.bound_dev_if == net_dev->ifindex)))  in cma_match_net_dev()
1770 		return ERR_PTR(-EINVAL);  in cma_find_listener()
1772 	hlist_for_each_entry(id_priv, &bind_list->owners, node) {  in cma_find_listener()
1773 		if (cma_match_private_data(id_priv, ib_event->private_data)) {  in cma_find_listener()
1774 			if (id_priv->id.device == cm_id->device &&  in cma_find_listener()
1775 			    cma_match_net_dev(&id_priv->id, net_dev, req))  in cma_find_listener()
1778 					    &id_priv->listen_list,  in cma_find_listener()
1780 				if (id_priv_dev->id.device == cm_id->device &&  in cma_find_listener()
1781 				    cma_match_net_dev(&id_priv_dev->id,  in cma_find_listener()
1788 	return ERR_PTR(-EINVAL);  in cma_find_listener()
1807 		if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) {  in cma_ib_id_from_event()
1824 	 * If the device state is not IFF_UP, its properties such as ifindex  in cma_ib_id_from_event()
1827 	 * ongoing operations on net device after device is closed using  in cma_ib_id_from_event()
1838 		if (((*net_dev)->flags & IFF_UP) == 0) {  in cma_ib_id_from_event()
1839 			id_priv = ERR_PTR(-EHOSTUNREACH);  in cma_ib_id_from_event()
1844 				 (struct sockaddr *)&req->src_addr_storage,  in cma_ib_id_from_event()
1845 				 (struct sockaddr *)&req->listen_addr_storage)) {  in cma_ib_id_from_event()
1846 			id_priv = ERR_PTR(-EHOSTUNREACH);  in cma_ib_id_from_event()
1852 				rdma_ps_from_service_id(req->service_id),  in cma_ib_id_from_event()
1853 				cma_port_from_service_id(req->service_id));  in cma_ib_id_from_event()
1872 	if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) {  in cma_cancel_route()
1873 		if (id_priv->query)  in cma_cancel_route()
1874 			ib_sa_cancel_query(id_priv->query_id, id_priv->query);  in cma_cancel_route()
1888 	list_del_init(&id_priv->listen_any_item);  in _cma_cancel_listens()
1890 	while (!list_empty(&id_priv->listen_list)) {  in _cma_cancel_listens()
1892 			list_first_entry(&id_priv->listen_list,  in _cma_cancel_listens()
1894 		/* sync with device removal to avoid duplicate destruction */  in _cma_cancel_listens()
1895 		list_del_init(&dev_id_priv->device_item);  in _cma_cancel_listens()
1896 		list_del_init(&dev_id_priv->listen_item);  in _cma_cancel_listens()
1899 		rdma_destroy_id(&dev_id_priv->id);  in _cma_cancel_listens()
1924 		rdma_addr_cancel(&id_priv->id.route.addr.dev_addr);  in cma_cancel_operation()
1930 		if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev)  in cma_cancel_operation()
1940 	struct rdma_bind_list *bind_list = id_priv->bind_list;  in cma_release_port()
1941 	struct net *net = id_priv->id.route.addr.dev_addr.net;  in cma_release_port()
1947 	hlist_del(&id_priv->node);  in cma_release_port()
1948 	if (hlist_empty(&bind_list->owners)) {  in cma_release_port()
1949 		cma_ps_remove(net, bind_list->ps, bind_list->port);  in cma_release_port()
1958 	bool send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN);  in destroy_mc()
1960 	if (rdma_cap_ib_mcast(id_priv->id.device, id_priv->id.port_num))  in destroy_mc()
1961 		ib_sa_free_multicast(mc->sa_mc);  in destroy_mc()
1963 	if (rdma_protocol_roce(id_priv->id.device, id_priv->id.port_num)) {  in destroy_mc()
1965 			&id_priv->id.route.addr.dev_addr;  in destroy_mc()
1968 		if (dev_addr->bound_dev_if)  in destroy_mc()
1969 			ndev = dev_get_by_index(dev_addr->net,  in destroy_mc()
1970 						dev_addr->bound_dev_if);  in destroy_mc()
1975 			gid_type = id_priv->cma_dev->default_gid_type  in destroy_mc()
1976 					   [id_priv->id.port_num -  in destroy_mc()
1978 						    id_priv->cma_dev->device)];  in destroy_mc()
1979 			cma_iboe_set_mgid((struct sockaddr *)&mc->addr, &mgid,  in destroy_mc()
1985 		cancel_work_sync(&mc->iboe_join.work);  in destroy_mc()
1994 	while (!list_empty(&id_priv->mc_list)) {  in cma_leave_mc_groups()
1995 		mc = list_first_entry(&id_priv->mc_list, struct cma_multicast,  in cma_leave_mc_groups()
1997 		list_del(&mc->list);  in cma_leave_mc_groups()
2007 	rdma_restrack_del(&id_priv->res);  in _destroy_id()
2009 	if (id_priv->cma_dev) {  in _destroy_id()
2010 		if (rdma_cap_ib_cm(id_priv->id.device, 1)) {  in _destroy_id()
2011 			if (id_priv->cm_id.ib)  in _destroy_id()
2012 				ib_destroy_cm_id(id_priv->cm_id.ib);  in _destroy_id()
2013 		} else if (rdma_cap_iw_cm(id_priv->id.device, 1)) {  in _destroy_id()
2014 			if (id_priv->cm_id.iw)  in _destroy_id()
2015 				iw_destroy_cm_id(id_priv->cm_id.iw);  in _destroy_id()
2023 	wait_for_completion(&id_priv->comp);  in _destroy_id()
2025 	if (id_priv->internal_id)  in _destroy_id()
2026 		cma_id_put(id_priv->id.context);  in _destroy_id()
2028 	kfree(id_priv->id.route.path_rec);  in _destroy_id()
2029 	kfree(id_priv->id.route.path_rec_inbound);  in _destroy_id()
2030 	kfree(id_priv->id.route.path_rec_outbound);  in _destroy_id()
2032 	put_net(id_priv->id.route.addr.dev_addr.net);  in _destroy_id()
2037  * destroy an ID from within the handler_mutex. This ensures that no other
2041 	__releases(&idprv->handler_mutex)  in destroy_id_handler_unlock()
2054 	lockdep_assert_held(&id_priv->handler_mutex);  in destroy_id_handler_unlock()
2055 	spin_lock_irqsave(&id_priv->lock, flags);  in destroy_id_handler_unlock()
2056 	state = id_priv->state;  in destroy_id_handler_unlock()
2057 	id_priv->state = RDMA_CM_DESTROYING;  in destroy_id_handler_unlock()
2058 	spin_unlock_irqrestore(&id_priv->lock, flags);  in destroy_id_handler_unlock()
2059 	mutex_unlock(&id_priv->handler_mutex);  in destroy_id_handler_unlock()
2063 void rdma_destroy_id(struct rdma_cm_id *id)  in rdma_destroy_id()  argument
2066 		container_of(id, struct rdma_id_private, id);  in rdma_destroy_id()
2068 	mutex_lock(&id_priv->handler_mutex);  in rdma_destroy_id()
2086 	ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0);  in cma_rep_recv()
2095 	ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED,  in cma_rep_recv()
2104 	event->param.conn.private_data = private_data;  in cma_set_rep_event_data()
2105 	event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE;  in cma_set_rep_event_data()
2106 	event->param.conn.responder_resources = rep_data->responder_resources;  in cma_set_rep_event_data()
2107 	event->param.conn.initiator_depth = rep_data->initiator_depth;  in cma_set_rep_event_data()
2108 	event->param.conn.flow_control = rep_data->flow_control;  in cma_set_rep_event_data()
2109 	event->param.conn.rnr_retry_count = rep_data->rnr_retry_count;  in cma_set_rep_event_data()
2110 	event->param.conn.srq = rep_data->srq;  in cma_set_rep_event_data()
2111 	event->param.conn.qp_num = rep_data->remote_qpn;  in cma_set_rep_event_data()
2113 	event->ece.vendor_id = rep_data->ece.vendor_id;  in cma_set_rep_event_data()
2114 	event->ece.attr_mod = rep_data->ece.attr_mod;  in cma_set_rep_event_data()
2122 	lockdep_assert_held(&id_priv->handler_mutex);  in cma_cm_event_handler()
2125 	ret = id_priv->id.event_handler(&id_priv->id, event);  in cma_cm_event_handler()
2133 	struct rdma_id_private *id_priv = cm_id->context;  in cma_ib_handler()
2138 	mutex_lock(&id_priv->handler_mutex);  in cma_ib_handler()
2139 	state = READ_ONCE(id_priv->state);  in cma_ib_handler()
2140 	if ((ib_event->event != IB_CM_TIMEWAIT_EXIT &&  in cma_ib_handler()
2142 	    (ib_event->event == IB_CM_TIMEWAIT_EXIT &&  in cma_ib_handler()
2146 	switch (ib_event->event) {  in cma_ib_handler()
2150 		event.status = -ETIMEDOUT;  in cma_ib_handler()
2154 		    (id_priv->id.qp_type != IB_QPT_UD)) {  in cma_ib_handler()
2158 		if (id_priv->id.qp) {  in cma_ib_handler()
2165 		cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd,  in cma_ib_handler()
2166 				       ib_event->private_data);  in cma_ib_handler()
2173 		event.status = -ETIMEDOUT;  in cma_ib_handler()
2189 		pr_debug_ratelimited("RDMA CM: REJECTED: %s\n", rdma_reject_msg(&id_priv->id,  in cma_ib_handler()
2190 										ib_event->param.rej_rcvd.reason));  in cma_ib_handler()
2192 		event.status = ib_event->param.rej_rcvd.reason;  in cma_ib_handler()
2194 		event.param.conn.private_data = ib_event->private_data;  in cma_ib_handler()
2199 		       ib_event->event);  in cma_ib_handler()
2205 		/* Destroy the CM ID by returning a non-zero value. */  in cma_ib_handler()
2206 		id_priv->cm_id.ib = NULL;  in cma_ib_handler()
2211 	mutex_unlock(&id_priv->handler_mutex);  in cma_ib_handler()
2222 	struct rdma_cm_id *id;  in cma_ib_new_conn_id()  local
2224 	const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family;  in cma_ib_new_conn_id()
2225 	struct sa_path_rec *path = ib_event->param.req_rcvd.primary_path;  in cma_ib_new_conn_id()
2227 		ib_event->param.req_rcvd.primary_path->service_id;  in cma_ib_new_conn_id()
2230 	listen_id_priv = container_of(listen_id, struct rdma_id_private, id);  in cma_ib_new_conn_id()
2231 	id_priv = __rdma_create_id(listen_id->route.addr.dev_addr.net,  in cma_ib_new_conn_id()
2232 				   listen_id->event_handler, listen_id->context,  in cma_ib_new_conn_id()
2233 				   listen_id->ps,  in cma_ib_new_conn_id()
2234 				   ib_event->param.req_rcvd.qp_type,  in cma_ib_new_conn_id()
2239 	id = &id_priv->id;  in cma_ib_new_conn_id()
2240 	if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr,  in cma_ib_new_conn_id()
2241 			      (struct sockaddr *)&id->route.addr.dst_addr,  in cma_ib_new_conn_id()
2245 	rt = &id->route;  in cma_ib_new_conn_id()
2246 	rt->num_pri_alt_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1;  in cma_ib_new_conn_id()
2247 	rt->path_rec = kmalloc_array(rt->num_pri_alt_paths,  in cma_ib_new_conn_id()
2248 				     sizeof(*rt->path_rec), GFP_KERNEL);  in cma_ib_new_conn_id()
2249 	if (!rt->path_rec)  in cma_ib_new_conn_id()
2252 	rt->path_rec[0] = *path;  in cma_ib_new_conn_id()
2253 	if (rt->num_pri_alt_paths == 2)  in cma_ib_new_conn_id()
2254 		rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path;  in cma_ib_new_conn_id()
2257 		rdma_copy_src_l2_addr(&rt->addr.dev_addr, net_dev);  in cma_ib_new_conn_id()
2261 			rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND;  in cma_ib_new_conn_id()
2262 			rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid);  in cma_ib_new_conn_id()
2263 			ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey));  in cma_ib_new_conn_id()
2265 			ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr);  in cma_ib_new_conn_id()
2270 	rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid);  in cma_ib_new_conn_id()
2272 	id_priv->state = RDMA_CM_CONNECT;  in cma_ib_new_conn_id()
2276 	rdma_destroy_id(id);  in cma_ib_new_conn_id()
2287 	struct rdma_cm_id *id;  in cma_ib_new_udp_id()  local
2288 	const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family;  in cma_ib_new_udp_id()
2289 	struct net *net = listen_id->route.addr.dev_addr.net;  in cma_ib_new_udp_id()
2292 	listen_id_priv = container_of(listen_id, struct rdma_id_private, id);  in cma_ib_new_udp_id()
2293 	id_priv = __rdma_create_id(net, listen_id->event_handler,  in cma_ib_new_udp_id()
2294 				   listen_id->context, listen_id->ps, IB_QPT_UD,  in cma_ib_new_udp_id()
2299 	id = &id_priv->id;  in cma_ib_new_udp_id()
2300 	if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr,  in cma_ib_new_udp_id()
2301 			      (struct sockaddr *)&id->route.addr.dst_addr,  in cma_ib_new_udp_id()
2303 			      ib_event->param.sidr_req_rcvd.service_id))  in cma_ib_new_udp_id()
2307 		rdma_copy_src_l2_addr(&id->route.addr.dev_addr, net_dev);  in cma_ib_new_udp_id()
2311 						 &id->route.addr.dev_addr);  in cma_ib_new_udp_id()
2317 	id_priv->state = RDMA_CM_CONNECT;  in cma_ib_new_udp_id()
2320 	rdma_destroy_id(id);  in cma_ib_new_udp_id()
2328 	event->param.conn.private_data = private_data + offset;  in cma_set_req_event_data()
2329 	event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset;  in cma_set_req_event_data()
2330 	event->param.conn.responder_resources = req_data->responder_resources;  in cma_set_req_event_data()
2331 	event->param.conn.initiator_depth = req_data->initiator_depth;  in cma_set_req_event_data()
2332 	event->param.conn.flow_control = req_data->flow_control;  in cma_set_req_event_data()
2333 	event->param.conn.retry_count = req_data->retry_count;  in cma_set_req_event_data()
2334 	event->param.conn.rnr_retry_count = req_data->rnr_retry_count;  in cma_set_req_event_data()
2335 	event->param.conn.srq = req_data->srq;  in cma_set_req_event_data()
2336 	event->param.conn.qp_num = req_data->remote_qpn;  in cma_set_req_event_data()
2338 	event->ece.vendor_id = req_data->ece.vendor_id;  in cma_set_req_event_data()
2339 	event->ece.attr_mod = req_data->ece.attr_mod;  in cma_set_req_event_data()
2342 static int cma_ib_check_req_qp_type(const struct rdma_cm_id *id,  in cma_ib_check_req_qp_type()  argument
2345 	return (((ib_event->event == IB_CM_REQ_RECEIVED) &&  in cma_ib_check_req_qp_type()
2346 		 (ib_event->param.req_rcvd.qp_type == id->qp_type)) ||  in cma_ib_check_req_qp_type()
2347 		((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) &&  in cma_ib_check_req_qp_type()
2348 		 (id->qp_type == IB_QPT_UD)) ||  in cma_ib_check_req_qp_type()
2349 		(!id->qp_type));  in cma_ib_check_req_qp_type()
2366 	trace_cm_req_handler(listen_id, ib_event->event);  in cma_ib_req_handler()
2367 	if (!cma_ib_check_req_qp_type(&listen_id->id, ib_event)) {  in cma_ib_req_handler()
2368 		ret = -EINVAL;  in cma_ib_req_handler()
2372 	mutex_lock(&listen_id->handler_mutex);  in cma_ib_req_handler()
2373 	if (READ_ONCE(listen_id->state) != RDMA_CM_LISTEN) {  in cma_ib_req_handler()
2374 		ret = -ECONNABORTED;  in cma_ib_req_handler()
2380 	if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) {  in cma_ib_req_handler()
2381 		conn_id = cma_ib_new_udp_id(&listen_id->id, ib_event, net_dev);  in cma_ib_req_handler()
2382 		event.param.ud.private_data = ib_event->private_data + offset;  in cma_ib_req_handler()
2384 				IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset;  in cma_ib_req_handler()
2386 		conn_id = cma_ib_new_conn_id(&listen_id->id, ib_event, net_dev);  in cma_ib_req_handler()
2387 		cma_set_req_event_data(&event, &ib_event->param.req_rcvd,  in cma_ib_req_handler()
2388 				       ib_event->private_data, offset);  in cma_ib_req_handler()
2391 		ret = -ENOMEM;  in cma_ib_req_handler()
2395 	mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);  in cma_ib_req_handler()
2402 	conn_id->cm_id.ib = cm_id;  in cma_ib_req_handler()
2403 	cm_id->context = conn_id;  in cma_ib_req_handler()
2404 	cm_id->cm_handler = cma_ib_handler;  in cma_ib_req_handler()
2408 		/* Destroy the CM ID by returning a non-zero value. */  in cma_ib_req_handler()
2409 		conn_id->cm_id.ib = NULL;  in cma_ib_req_handler()
2410 		mutex_unlock(&listen_id->handler_mutex);  in cma_ib_req_handler()
2415 	if (READ_ONCE(conn_id->state) == RDMA_CM_CONNECT &&  in cma_ib_req_handler()
2416 	    conn_id->id.qp_type != IB_QPT_UD) {  in cma_ib_req_handler()
2417 		trace_cm_send_mra(cm_id->context);  in cma_ib_req_handler()
2420 	mutex_unlock(&conn_id->handler_mutex);  in cma_ib_req_handler()
2423 	mutex_unlock(&listen_id->handler_mutex);  in cma_ib_req_handler()
2432 __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr)  in rdma_get_service_id()  argument
2434 	if (addr->sa_family == AF_IB)  in rdma_get_service_id()
2435 		return ((struct sockaddr_ib *) addr)->sib_sid;  in rdma_get_service_id()
2437 	return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr)));  in rdma_get_service_id()
2444 	struct rdma_addr *addr = &cm_id->route.addr;  in rdma_read_gids()
2446 	if (!cm_id->device) {  in rdma_read_gids()
2454 	if (rdma_protocol_roce(cm_id->device, cm_id->port_num)) {  in rdma_read_gids()
2456 			rdma_ip2gid((struct sockaddr *)&addr->src_addr, sgid);  in rdma_read_gids()
2458 			rdma_ip2gid((struct sockaddr *)&addr->dst_addr, dgid);  in rdma_read_gids()
2461 			rdma_addr_get_sgid(&addr->dev_addr, sgid);  in rdma_read_gids()
2463 			rdma_addr_get_dgid(&addr->dev_addr, dgid);  in rdma_read_gids()
2470 	struct rdma_id_private *id_priv = iw_id->context;  in cma_iw_handler()
2473 	struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr;  in cma_iw_handler()
2474 	struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr;  in cma_iw_handler()
2476 	mutex_lock(&id_priv->handler_mutex);  in cma_iw_handler()
2477 	if (READ_ONCE(id_priv->state) != RDMA_CM_CONNECT)  in cma_iw_handler()
2480 	switch (iw_event->event) {  in cma_iw_handler()
2489 		switch (iw_event->status) {  in cma_iw_handler()
2492 			event.param.conn.initiator_depth = iw_event->ird;  in cma_iw_handler()
2493 			event.param.conn.responder_resources = iw_event->ord;  in cma_iw_handler()
2495 		case -ECONNRESET:  in cma_iw_handler()
2496 		case -ECONNREFUSED:  in cma_iw_handler()
2499 		case -ETIMEDOUT:  in cma_iw_handler()
2509 		event.param.conn.initiator_depth = iw_event->ird;  in cma_iw_handler()
2510 		event.param.conn.responder_resources = iw_event->ord;  in cma_iw_handler()
2516 	event.status = iw_event->status;  in cma_iw_handler()
2517 	event.param.conn.private_data = iw_event->private_data;  in cma_iw_handler()
2518 	event.param.conn.private_data_len = iw_event->private_data_len;  in cma_iw_handler()
2521 		/* Destroy the CM ID by returning a non-zero value. */  in cma_iw_handler()
2522 		id_priv->cm_id.iw = NULL;  in cma_iw_handler()
2528 	mutex_unlock(&id_priv->handler_mutex);  in cma_iw_handler()
2537 	int ret = -ECONNABORTED;  in iw_conn_req_handler()
2538 	struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr;  in iw_conn_req_handler()
2539 	struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr;  in iw_conn_req_handler()
2542 	event.param.conn.private_data = iw_event->private_data;  in iw_conn_req_handler()
2543 	event.param.conn.private_data_len = iw_event->private_data_len;  in iw_conn_req_handler()
2544 	event.param.conn.initiator_depth = iw_event->ird;  in iw_conn_req_handler()
2545 	event.param.conn.responder_resources = iw_event->ord;  in iw_conn_req_handler()
2547 	listen_id = cm_id->context;  in iw_conn_req_handler()
2549 	mutex_lock(&listen_id->handler_mutex);  in iw_conn_req_handler()
2550 	if (READ_ONCE(listen_id->state) != RDMA_CM_LISTEN)  in iw_conn_req_handler()
2553 	/* Create a new RDMA id for the new IW CM ID */  in iw_conn_req_handler()
2554 	conn_id = __rdma_create_id(listen_id->id.route.addr.dev_addr.net,  in iw_conn_req_handler()
2555 				   listen_id->id.event_handler,  in iw_conn_req_handler()
2556 				   listen_id->id.context, RDMA_PS_TCP,  in iw_conn_req_handler()
2559 		ret = -ENOMEM;  in iw_conn_req_handler()
2562 	mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);  in iw_conn_req_handler()
2563 	conn_id->state = RDMA_CM_CONNECT;  in iw_conn_req_handler()
2565 	ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr);  in iw_conn_req_handler()
2567 		mutex_unlock(&listen_id->handler_mutex);  in iw_conn_req_handler()
2574 		mutex_unlock(&listen_id->handler_mutex);  in iw_conn_req_handler()
2579 	conn_id->cm_id.iw = cm_id;  in iw_conn_req_handler()
2580 	cm_id->context = conn_id;  in iw_conn_req_handler()
2581 	cm_id->cm_handler = cma_iw_handler;  in iw_conn_req_handler()
2588 		/* User wants to destroy the CM ID */  in iw_conn_req_handler()
2589 		conn_id->cm_id.iw = NULL;  in iw_conn_req_handler()
2590 		mutex_unlock(&listen_id->handler_mutex);  in iw_conn_req_handler()
2595 	mutex_unlock(&conn_id->handler_mutex);  in iw_conn_req_handler()
2598 	mutex_unlock(&listen_id->handler_mutex);  in iw_conn_req_handler()
2605 	struct ib_cm_id	*id;  in cma_ib_listen()  local
2609 	svc_id = rdma_get_service_id(&id_priv->id, addr);  in cma_ib_listen()
2610 	id = ib_cm_insert_listen(id_priv->id.device,  in cma_ib_listen()
2612 	if (IS_ERR(id))  in cma_ib_listen()
2613 		return PTR_ERR(id);  in cma_ib_listen()
2614 	id_priv->cm_id.ib = id;  in cma_ib_listen()
2622 	struct iw_cm_id	*id;  in cma_iw_listen()  local
2624 	id = iw_create_cm_id(id_priv->id.device,  in cma_iw_listen()
2627 	if (IS_ERR(id))  in cma_iw_listen()
2628 		return PTR_ERR(id);  in cma_iw_listen()
2630 	mutex_lock(&id_priv->qp_mutex);  in cma_iw_listen()
2631 	id->tos = id_priv->tos;  in cma_iw_listen()
2632 	id->tos_set = id_priv->tos_set;  in cma_iw_listen()
2633 	mutex_unlock(&id_priv->qp_mutex);  in cma_iw_listen()
2634 	id->afonly = id_priv->afonly;  in cma_iw_listen()
2635 	id_priv->cm_id.iw = id;  in cma_iw_listen()
2637 	memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv),  in cma_iw_listen()
2640 	ret = iw_cm_listen(id_priv->cm_id.iw, backlog);  in cma_iw_listen()
2643 		iw_destroy_cm_id(id_priv->cm_id.iw);  in cma_iw_listen()
2644 		id_priv->cm_id.iw = NULL;  in cma_iw_listen()
2650 static int cma_listen_handler(struct rdma_cm_id *id,  in cma_listen_handler()  argument
2653 	struct rdma_id_private *id_priv = id->context;  in cma_listen_handler()
2656 	if (event->event == RDMA_CM_EVENT_DEVICE_REMOVAL)  in cma_listen_handler()
2657 		return -1;  in cma_listen_handler()
2659 	id->context = id_priv->id.context;  in cma_listen_handler()
2660 	id->event_handler = id_priv->id.event_handler;  in cma_listen_handler()
2662 	return id_priv->id.event_handler(id, event);  in cma_listen_handler()
2670 	struct net *net = id_priv->id.route.addr.dev_addr.net;  in cma_listen_on_dev()
2676 	if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1))  in cma_listen_on_dev()
2681 				 id_priv->id.ps, id_priv->id.qp_type, id_priv);  in cma_listen_on_dev()
2685 	dev_id_priv->state = RDMA_CM_ADDR_BOUND;  in cma_listen_on_dev()
2690 	rdma_restrack_add(&dev_id_priv->res);  in cma_listen_on_dev()
2692 	dev_id_priv->internal_id = 1;  in cma_listen_on_dev()
2693 	dev_id_priv->afonly = id_priv->afonly;  in cma_listen_on_dev()
2694 	mutex_lock(&id_priv->qp_mutex);  in cma_listen_on_dev()
2695 	dev_id_priv->tos_set = id_priv->tos_set;  in cma_listen_on_dev()
2696 	dev_id_priv->tos = id_priv->tos;  in cma_listen_on_dev()
2697 	mutex_unlock(&id_priv->qp_mutex);  in cma_listen_on_dev()
2699 	ret = rdma_listen(&dev_id_priv->id, id_priv->backlog);  in cma_listen_on_dev()
2702 	list_add_tail(&dev_id_priv->listen_item, &id_priv->listen_list);  in cma_listen_on_dev()
2707 	dev_warn(&cma_dev->device->dev, "RDMA CMA: %s, error %d\n", __func__, ret);  in cma_listen_on_dev()
2718 	list_add_tail(&id_priv->listen_any_item, &listen_any_list);  in cma_listen_on_all()
2724 				list_del_init(&to_destroy->device_item);  in cma_listen_on_all()
2735 		rdma_destroy_id(&to_destroy->id);  in cma_listen_on_all()
2739 void rdma_set_service_type(struct rdma_cm_id *id, int tos)  in rdma_set_service_type()  argument
2743 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_service_type()
2744 	mutex_lock(&id_priv->qp_mutex);  in rdma_set_service_type()
2745 	id_priv->tos = (u8) tos;  in rdma_set_service_type()
2746 	id_priv->tos_set = true;  in rdma_set_service_type()
2747 	mutex_unlock(&id_priv->qp_mutex);  in rdma_set_service_type()
2752  * rdma_set_ack_timeout() - Set the ack timeout of QP associated
2754  * @id: Communication identifier to associated with service type.
2766 int rdma_set_ack_timeout(struct rdma_cm_id *id, u8 timeout)  in rdma_set_ack_timeout()  argument
2770 	if (id->qp_type != IB_QPT_RC && id->qp_type != IB_QPT_XRC_INI)  in rdma_set_ack_timeout()
2771 		return -EINVAL;  in rdma_set_ack_timeout()
2773 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_ack_timeout()
2774 	mutex_lock(&id_priv->qp_mutex);  in rdma_set_ack_timeout()
2775 	id_priv->timeout = timeout;  in rdma_set_ack_timeout()
2776 	id_priv->timeout_set = true;  in rdma_set_ack_timeout()
2777 	mutex_unlock(&id_priv->qp_mutex);  in rdma_set_ack_timeout()
2784  * rdma_set_min_rnr_timer() - Set the minimum RNR Retry timer of the
2786  * @id: Communication identifier to associated with service type.
2787  * @min_rnr_timer: 5-bit value encoded as Table 45: "Encoding for RNR NAK
2801 int rdma_set_min_rnr_timer(struct rdma_cm_id *id, u8 min_rnr_timer)  in rdma_set_min_rnr_timer()  argument
2805 	/* It is a five-bit value */  in rdma_set_min_rnr_timer()
2807 		return -EINVAL;  in rdma_set_min_rnr_timer()
2809 	if (WARN_ON(id->qp_type != IB_QPT_RC && id->qp_type != IB_QPT_XRC_TGT))  in rdma_set_min_rnr_timer()
2810 		return -EINVAL;  in rdma_set_min_rnr_timer()
2812 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_min_rnr_timer()
2813 	mutex_lock(&id_priv->qp_mutex);  in rdma_set_min_rnr_timer()
2814 	id_priv->min_rnr_timer = min_rnr_timer;  in rdma_set_min_rnr_timer()
2815 	id_priv->min_rnr_timer_set = true;  in rdma_set_min_rnr_timer()
2816 	mutex_unlock(&id_priv->qp_mutex);  in rdma_set_min_rnr_timer()
2825 	struct rdma_route *route = &work->id->id.route;  in route_set_path_rec_inbound()
2827 	if (!route->path_rec_inbound) {  in route_set_path_rec_inbound()
2828 		route->path_rec_inbound =  in route_set_path_rec_inbound()
2829 			kzalloc(sizeof(*route->path_rec_inbound), GFP_KERNEL);  in route_set_path_rec_inbound()
2830 		if (!route->path_rec_inbound)  in route_set_path_rec_inbound()
2834 	*route->path_rec_inbound = *path_rec;  in route_set_path_rec_inbound()
2840 	struct rdma_route *route = &work->id->id.route;  in route_set_path_rec_outbound()
2842 	if (!route->path_rec_outbound) {  in route_set_path_rec_outbound()
2843 		route->path_rec_outbound =  in route_set_path_rec_outbound()
2844 			kzalloc(sizeof(*route->path_rec_outbound), GFP_KERNEL);  in route_set_path_rec_outbound()
2845 		if (!route->path_rec_outbound)  in route_set_path_rec_outbound()
2849 	*route->path_rec_outbound = *path_rec;  in route_set_path_rec_outbound()
2859 	route = &work->id->id.route;  in cma_query_handler()
2866 			*route->path_rec = path_rec[i];  in cma_query_handler()
2872 	if (!route->path_rec) {  in cma_query_handler()
2873 		status = -EINVAL;  in cma_query_handler()
2877 	route->num_pri_alt_paths = 1;  in cma_query_handler()
2878 	queue_work(cma_wq, &work->work);  in cma_query_handler()
2882 	work->old_state = RDMA_CM_ROUTE_QUERY;  in cma_query_handler()
2883 	work->new_state = RDMA_CM_ADDR_RESOLVED;  in cma_query_handler()
2884 	work->event.event = RDMA_CM_EVENT_ROUTE_ERROR;  in cma_query_handler()
2885 	work->event.status = status;  in cma_query_handler()
2888 	queue_work(cma_wq, &work->work);  in cma_query_handler()
2894 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_query_ib_route()
2902 	if (rdma_cap_opa_ah(id_priv->id.device, id_priv->id.port_num))  in cma_query_ib_route()
2911 	path_rec.service_id = rdma_get_service_id(&id_priv->id,  in cma_query_ib_route()
2920 		path_rec.qos_class = cpu_to_be16((u16) id_priv->tos);  in cma_query_ib_route()
2925 		path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20);  in cma_query_ib_route()
2930 		path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20);  in cma_query_ib_route()
2935 	id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device,  in cma_query_ib_route()
2936 					       id_priv->id.port_num, &path_rec,  in cma_query_ib_route()
2939 					       work, &id_priv->query);  in cma_query_ib_route()
2941 	return (id_priv->query_id < 0) ? id_priv->query_id : 0;  in cma_query_ib_route()
2948 	struct rdma_cm_event *event = &mc->iboe_join.event;  in cma_iboe_join_work_handler()
2949 	struct rdma_id_private *id_priv = mc->id_priv;  in cma_iboe_join_work_handler()
2952 	mutex_lock(&id_priv->handler_mutex);  in cma_iboe_join_work_handler()
2953 	if (READ_ONCE(id_priv->state) == RDMA_CM_DESTROYING ||  in cma_iboe_join_work_handler()
2954 	    READ_ONCE(id_priv->state) == RDMA_CM_DEVICE_REMOVAL)  in cma_iboe_join_work_handler()
2961 	mutex_unlock(&id_priv->handler_mutex);  in cma_iboe_join_work_handler()
2962 	if (event->event == RDMA_CM_EVENT_MULTICAST_JOIN)  in cma_iboe_join_work_handler()
2963 		rdma_destroy_ah_attr(&event->param.ud.ah_attr);  in cma_iboe_join_work_handler()
2969 	struct rdma_id_private *id_priv = work->id;  in cma_work_handler()
2971 	mutex_lock(&id_priv->handler_mutex);  in cma_work_handler()
2972 	if (READ_ONCE(id_priv->state) == RDMA_CM_DESTROYING ||  in cma_work_handler()
2973 	    READ_ONCE(id_priv->state) == RDMA_CM_DEVICE_REMOVAL)  in cma_work_handler()
2975 	if (work->old_state != 0 || work->new_state != 0) {  in cma_work_handler()
2976 		if (!cma_comp_exch(id_priv, work->old_state, work->new_state))  in cma_work_handler()
2980 	if (cma_cm_event_handler(id_priv, &work->event)) {  in cma_work_handler()
2987 	mutex_unlock(&id_priv->handler_mutex);  in cma_work_handler()
2990 	if (work->event.event == RDMA_CM_EVENT_MULTICAST_JOIN)  in cma_work_handler()
2991 		rdma_destroy_ah_attr(&work->event.param.ud.ah_attr);  in cma_work_handler()
2998 	work->id = id_priv;  in cma_init_resolve_route_work()
2999 	INIT_WORK(&work->work, cma_work_handler);  in cma_init_resolve_route_work()
3000 	work->old_state = RDMA_CM_ROUTE_QUERY;  in cma_init_resolve_route_work()
3001 	work->new_state = RDMA_CM_ROUTE_RESOLVED;  in cma_init_resolve_route_work()
3002 	work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED;  in cma_init_resolve_route_work()
3011 	work->id = id_priv;  in enqueue_resolve_addr_work()
3012 	INIT_WORK(&work->work, cma_work_handler);  in enqueue_resolve_addr_work()
3013 	work->old_state = RDMA_CM_ADDR_QUERY;  in enqueue_resolve_addr_work()
3014 	work->new_state = RDMA_CM_ADDR_RESOLVED;  in enqueue_resolve_addr_work()
3015 	work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED;  in enqueue_resolve_addr_work()
3017 	queue_work(cma_wq, &work->work);  in enqueue_resolve_addr_work()
3023 	struct rdma_route *route = &id_priv->id.route;  in cma_resolve_ib_route()
3029 		return -ENOMEM;  in cma_resolve_ib_route()
3033 	if (!route->path_rec)  in cma_resolve_ib_route()
3034 		route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL);  in cma_resolve_ib_route()
3035 	if (!route->path_rec) {  in cma_resolve_ib_route()
3036 		ret = -ENOMEM;  in cma_resolve_ib_route()
3046 	kfree(route->path_rec);  in cma_resolve_ib_route()
3047 	route->path_rec = NULL;  in cma_resolve_ib_route()
3075 	struct rdma_route *route = &id_priv->id.route;  in cma_iboe_set_path_rec_l2_fields()
3077 	struct rdma_addr *addr = &route->addr;  in cma_iboe_set_path_rec_l2_fields()
3081 	if (!addr->dev_addr.bound_dev_if)  in cma_iboe_set_path_rec_l2_fields()
3084 	ndev = dev_get_by_index(addr->dev_addr.net,  in cma_iboe_set_path_rec_l2_fields()
3085 				addr->dev_addr.bound_dev_if);  in cma_iboe_set_path_rec_l2_fields()
3089 	supported_gids = roce_gid_type_mask_support(id_priv->id.device,  in cma_iboe_set_path_rec_l2_fields()
3090 						    id_priv->id.port_num);  in cma_iboe_set_path_rec_l2_fields()
3091 	gid_type = cma_route_gid_type(addr->dev_addr.network,  in cma_iboe_set_path_rec_l2_fields()
3093 				      id_priv->gid_type);  in cma_iboe_set_path_rec_l2_fields()
3095 	if (gid_type < ib_network_to_gid_type(addr->dev_addr.network))  in cma_iboe_set_path_rec_l2_fields()
3096 		gid_type = ib_network_to_gid_type(addr->dev_addr.network);  in cma_iboe_set_path_rec_l2_fields()
3097 	route->path_rec->rec_type = sa_conv_gid_to_pathrec_type(gid_type);  in cma_iboe_set_path_rec_l2_fields()
3099 	route->path_rec->roce.route_resolved = true;  in cma_iboe_set_path_rec_l2_fields()
3100 	sa_path_set_dmac(route->path_rec, addr->dev_addr.dst_dev_addr);  in cma_iboe_set_path_rec_l2_fields()
3104 int rdma_set_ib_path(struct rdma_cm_id *id,  in rdma_set_ib_path()  argument
3111 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_ib_path()
3114 		return -EINVAL;  in rdma_set_ib_path()
3116 	id->route.path_rec = kmemdup(path_rec, sizeof(*path_rec),  in rdma_set_ib_path()
3118 	if (!id->route.path_rec) {  in rdma_set_ib_path()
3119 		ret = -ENOMEM;  in rdma_set_ib_path()
3123 	if (rdma_protocol_roce(id->device, id->port_num)) {  in rdma_set_ib_path()
3126 			ret = -ENODEV;  in rdma_set_ib_path()
3132 	id->route.num_pri_alt_paths = 1;  in rdma_set_ib_path()
3136 	kfree(id->route.path_rec);  in rdma_set_ib_path()
3137 	id->route.path_rec = NULL;  in rdma_set_ib_path()
3150 		return -ENOMEM;  in cma_resolve_iw_route()
3153 	queue_work(cma_wq, &work->work);  in cma_resolve_iw_route()
3162 	if (dev->num_tc)  in get_vlan_ndev_tc()
3178 	struct iboe_prio_tc_map *map = (struct iboe_prio_tc_map *)priv->data;  in get_lower_vlan_dev_tc()
3181 		map->output_tc = get_vlan_ndev_tc(dev, map->input_prio);  in get_lower_vlan_dev_tc()
3182 	else if (dev->num_tc)  in get_lower_vlan_dev_tc()
3183 		map->output_tc = netdev_get_prio_tc_map(dev, map->input_prio);  in get_lower_vlan_dev_tc()
3185 		map->output_tc = 0;  in get_lower_vlan_dev_tc()
3186 	/* We are interested only in first level VLAN device, so always  in get_lower_vlan_dev_tc()
3189 	map->found = true;  in get_lower_vlan_dev_tc()
3199 	/* If VLAN device, get it directly from the VLAN netdev */  in iboe_tos_to_sl()
3210 	/* If map is found from lower device, use it; Otherwise  in iboe_tos_to_sl()
3215 	else if (ndev->num_tc)  in iboe_tos_to_sl()
3228 	fl = be32_to_cpu(addr6->sin6_flowinfo) & IB_GRH_FLOWLABEL_MASK;  in cma_get_roce_udp_flow_label()
3241 	struct rdma_route *route = &id_priv->id.route;  in cma_resolve_iboe_route()
3242 	struct rdma_addr *addr = &route->addr;  in cma_resolve_iboe_route()
3247 	u8 default_roce_tos = id_priv->cma_dev->default_roce_tos[id_priv->id.port_num -  in cma_resolve_iboe_route()
3248 					rdma_start_port(id_priv->cma_dev->device)];  in cma_resolve_iboe_route()
3251 	mutex_lock(&id_priv->qp_mutex);  in cma_resolve_iboe_route()
3252 	tos = id_priv->tos_set ? id_priv->tos : default_roce_tos;  in cma_resolve_iboe_route()
3253 	mutex_unlock(&id_priv->qp_mutex);  in cma_resolve_iboe_route()
3257 		return -ENOMEM;  in cma_resolve_iboe_route()
3259 	route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL);  in cma_resolve_iboe_route()
3260 	if (!route->path_rec) {  in cma_resolve_iboe_route()
3261 		ret = -ENOMEM;  in cma_resolve_iboe_route()
3265 	route->num_pri_alt_paths = 1;  in cma_resolve_iboe_route()
3269 		ret = -ENODEV;  in cma_resolve_iboe_route()
3273 	rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr,  in cma_resolve_iboe_route()
3274 		    &route->path_rec->sgid);  in cma_resolve_iboe_route()
3275 	rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr,  in cma_resolve_iboe_route()
3276 		    &route->path_rec->dgid);  in cma_resolve_iboe_route()
3278 	if (((struct sockaddr *)&id_priv->id.route.addr.dst_addr)->sa_family != AF_IB)  in cma_resolve_iboe_route()
3279 		/* TODO: get the hoplimit from the inet/inet6 device */  in cma_resolve_iboe_route()
3280 		route->path_rec->hop_limit = addr->dev_addr.hoplimit;  in cma_resolve_iboe_route()
3282 		route->path_rec->hop_limit = 1;  in cma_resolve_iboe_route()
3283 	route->path_rec->reversible = 1;  in cma_resolve_iboe_route()
3284 	route->path_rec->pkey = cpu_to_be16(0xffff);  in cma_resolve_iboe_route()
3285 	route->path_rec->mtu_selector = IB_SA_EQ;  in cma_resolve_iboe_route()
3286 	route->path_rec->sl = iboe_tos_to_sl(ndev, tos);  in cma_resolve_iboe_route()
3287 	route->path_rec->traffic_class = tos;  in cma_resolve_iboe_route()
3288 	route->path_rec->mtu = iboe_get_mtu(ndev->mtu);  in cma_resolve_iboe_route()
3289 	route->path_rec->rate_selector = IB_SA_EQ;  in cma_resolve_iboe_route()
3290 	route->path_rec->rate = iboe_get_rate(ndev);  in cma_resolve_iboe_route()
3292 	route->path_rec->packet_life_time_selector = IB_SA_EQ;  in cma_resolve_iboe_route()
3300 	mutex_lock(&id_priv->qp_mutex);  in cma_resolve_iboe_route()
3301 	if (id_priv->timeout_set && id_priv->timeout)  in cma_resolve_iboe_route()
3302 		route->path_rec->packet_life_time = id_priv->timeout - 1;  in cma_resolve_iboe_route()
3304 		route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME;  in cma_resolve_iboe_route()
3305 	mutex_unlock(&id_priv->qp_mutex);  in cma_resolve_iboe_route()
3307 	if (!route->path_rec->mtu) {  in cma_resolve_iboe_route()
3308 		ret = -EINVAL;  in cma_resolve_iboe_route()
3312 	if (rdma_protocol_roce_udp_encap(id_priv->id.device,  in cma_resolve_iboe_route()
3313 					 id_priv->id.port_num))  in cma_resolve_iboe_route()
3314 		route->path_rec->flow_label =  in cma_resolve_iboe_route()
3318 	queue_work(cma_wq, &work->work);  in cma_resolve_iboe_route()
3323 	kfree(route->path_rec);  in cma_resolve_iboe_route()
3324 	route->path_rec = NULL;  in cma_resolve_iboe_route()
3325 	route->num_pri_alt_paths = 0;  in cma_resolve_iboe_route()
3331 int rdma_resolve_route(struct rdma_cm_id *id, unsigned long timeout_ms)  in rdma_resolve_route()  argument
3337 		return -EINVAL;  in rdma_resolve_route()
3339 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_resolve_route()
3341 		return -EINVAL;  in rdma_resolve_route()
3344 	if (rdma_cap_ib_sa(id->device, id->port_num))  in rdma_resolve_route()
3346 	else if (rdma_protocol_roce(id->device, id->port_num)) {  in rdma_resolve_route()
3351 	else if (rdma_protocol_iwarp(id->device, id->port_num))  in rdma_resolve_route()
3354 		ret = -ENOSYS;  in rdma_resolve_route()
3369 	switch (addr->sa_family) {  in cma_set_loopback()
3371 		((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK);  in cma_set_loopback()
3374 		ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr,  in cma_set_loopback()
3378 		ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr,  in cma_set_loopback()
3397 		    !rdma_cap_ib_cm(cur_dev->device, 1))  in cma_bind_loopback()
3403 		rdma_for_each_port (cur_dev->device, p) {  in cma_bind_loopback()
3404 			if (!ib_get_cached_port_state(cur_dev->device, p, &port_state) &&  in cma_bind_loopback()
3413 		ret = -ENODEV;  in cma_bind_loopback()
3420 	ret = rdma_query_gid(cma_dev->device, p, 0, &gid);  in cma_bind_loopback()
3424 	ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey);  in cma_bind_loopback()
3428 	id_priv->id.route.addr.dev_addr.dev_type =  in cma_bind_loopback()
3429 		(rdma_protocol_ib(cma_dev->device, p)) ?  in cma_bind_loopback()
3432 	rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid);  in cma_bind_loopback()
3433 	ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey);  in cma_bind_loopback()
3434 	id_priv->id.port_num = p;  in cma_bind_loopback()
3436 	rdma_restrack_add(&id_priv->res);  in cma_bind_loopback()
3451 	mutex_lock(&id_priv->handler_mutex);  in addr_handler()
3458 	 * matching rdma device, old address can be restored back, which helps  in addr_handler()
3464 	if (!status && !id_priv->cma_dev) {  in addr_handler()
3467 			pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to acquire device. status %d\n",  in addr_handler()
3469 		rdma_restrack_add(&id_priv->res);  in addr_handler()
3490 	mutex_unlock(&id_priv->handler_mutex);  in addr_handler()
3501 		return -ENOMEM;  in cma_resolve_loopback()
3503 	if (!id_priv->cma_dev) {  in cma_resolve_loopback()
3509 	rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);  in cma_resolve_loopback()
3510 	rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid);  in cma_resolve_loopback()
3526 		return -ENOMEM;  in cma_resolve_ib_addr()
3528 	if (!id_priv->cma_dev) {  in cma_resolve_ib_addr()
3534 	rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *)  in cma_resolve_ib_addr()
3535 		&(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr));  in cma_resolve_ib_addr()
3544 static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,  in cma_bind_addr()  argument
3549 	if (src_addr && src_addr->sa_family)  in cma_bind_addr()
3550 		return rdma_bind_addr(id, src_addr);  in cma_bind_addr()
3555 	zero_sock.ss_family = dst_addr->sa_family;  in cma_bind_addr()
3556 	if (IS_ENABLED(CONFIG_IPV6) && dst_addr->sa_family == AF_INET6) {  in cma_bind_addr()
3562 		src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id;  in cma_bind_addr()
3563 		if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL)  in cma_bind_addr()
3564 			id->route.addr.dev_addr.bound_dev_if =  in cma_bind_addr()
3565 				dst_addr6->sin6_scope_id;  in cma_bind_addr()
3566 	} else if (dst_addr->sa_family == AF_IB) {  in cma_bind_addr()
3567 		((struct sockaddr_ib *)&zero_sock)->sib_pkey =  in cma_bind_addr()
3568 			((struct sockaddr_ib *)dst_addr)->sib_pkey;  in cma_bind_addr()
3570 	return rdma_bind_addr(id, (struct sockaddr *)&zero_sock);  in cma_bind_addr()
3576  * calls made by ULP, a previously bound ID will not be re-bound and src_addr is
3588 		ret = cma_bind_addr(&id_priv->id, src_addr, dst_addr);  in resolve_prepare_src()
3593 			ret = -EINVAL;  in resolve_prepare_src()
3598 	if (cma_family(id_priv) != dst_addr->sa_family) {  in resolve_prepare_src()
3599 		ret = -EINVAL;  in resolve_prepare_src()
3611 int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,  in rdma_resolve_addr()  argument
3615 		container_of(id, struct rdma_id_private, id);  in rdma_resolve_addr()
3625 		if (dst_addr->sa_family == AF_IB) {  in rdma_resolve_addr()
3639 			if (id_priv->used_resolve_ip)  in rdma_resolve_addr()
3640 				rdma_addr_cancel(&id->route.addr.dev_addr);  in rdma_resolve_addr()
3642 				id_priv->used_resolve_ip = 1;  in rdma_resolve_addr()
3644 					      &id->route.addr.dev_addr,  in rdma_resolve_addr()
3659 int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse)  in rdma_set_reuseaddr()  argument
3665 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_reuseaddr()
3666 	spin_lock_irqsave(&id_priv->lock, flags);  in rdma_set_reuseaddr()
3667 	if ((reuse && id_priv->state != RDMA_CM_LISTEN) ||  in rdma_set_reuseaddr()
3668 	    id_priv->state == RDMA_CM_IDLE) {  in rdma_set_reuseaddr()
3669 		id_priv->reuseaddr = reuse;  in rdma_set_reuseaddr()
3672 		ret = -EINVAL;  in rdma_set_reuseaddr()
3674 	spin_unlock_irqrestore(&id_priv->lock, flags);  in rdma_set_reuseaddr()
3679 int rdma_set_afonly(struct rdma_cm_id *id, int afonly)  in rdma_set_afonly()  argument
3685 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_set_afonly()
3686 	spin_lock_irqsave(&id_priv->lock, flags);  in rdma_set_afonly()
3687 	if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) {  in rdma_set_afonly()
3688 		id_priv->options |= (1 << CMA_OPTION_AFONLY);  in rdma_set_afonly()
3689 		id_priv->afonly = afonly;  in rdma_set_afonly()
3692 		ret = -EINVAL;  in rdma_set_afonly()
3694 	spin_unlock_irqrestore(&id_priv->lock, flags);  in rdma_set_afonly()
3710 	port = htons(bind_list->port);  in cma_bind_port()
3712 	switch (addr->sa_family) {  in cma_bind_port()
3714 		((struct sockaddr_in *) addr)->sin_port = port;  in cma_bind_port()
3717 		((struct sockaddr_in6 *) addr)->sin6_port = port;  in cma_bind_port()
3721 		sid = be64_to_cpu(sib->sib_sid);  in cma_bind_port()
3722 		mask = be64_to_cpu(sib->sib_sid_mask);  in cma_bind_port()
3723 		sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port));  in cma_bind_port()
3724 		sib->sib_sid_mask = cpu_to_be64(~0ULL);  in cma_bind_port()
3727 	id_priv->bind_list = bind_list;  in cma_bind_port()
3728 	hlist_add_head(&id_priv->node, &bind_list->owners);  in cma_bind_port()
3741 		return -ENOMEM;  in cma_alloc_port()
3743 	ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list,  in cma_alloc_port()
3748 	bind_list->ps = ps;  in cma_alloc_port()
3749 	bind_list->port = snum;  in cma_alloc_port()
3754 	return ret == -ENOSPC ? -EADDRNOTAVAIL : ret;  in cma_alloc_port()
3767 	hlist_for_each_entry(cur_id, &bind_list->owners, node) {  in cma_port_is_unique()
3775 		/* different dest port -> unique */  in cma_port_is_unique()
3781 		/* different src address -> unique */  in cma_port_is_unique()
3787 		/* different dst address -> unique */  in cma_port_is_unique()
3793 		return -EADDRNOTAVAIL;  in cma_port_is_unique()
3804 	struct net *net = id_priv->id.route.addr.dev_addr.net;  in cma_alloc_any_port()
3809 	remaining = (high - low) + 1;  in cma_alloc_any_port()
3827 		 * re-using same port immediately after it is closed.  in cma_alloc_any_port()
3831 		if (ret != -EADDRNOTAVAIL)  in cma_alloc_any_port()
3834 	if (--remaining) {  in cma_alloc_any_port()
3840 	return -EADDRNOTAVAIL;  in cma_alloc_any_port()
3858 	hlist_for_each_entry(cur_id, &bind_list->owners, node) {  in cma_check_port()
3862 		if (reuseaddr && cur_id->reuseaddr)  in cma_check_port()
3866 		if (id_priv->afonly && cur_id->afonly &&  in cma_check_port()
3867 		    (addr->sa_family != cur_addr->sa_family))  in cma_check_port()
3871 			return -EADDRNOTAVAIL;  in cma_check_port()
3874 			return -EADDRINUSE;  in cma_check_port()
3890 		return -EACCES;  in cma_use_port()
3892 	bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum);  in cma_use_port()
3896 		ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr);  in cma_use_port()
3906 	switch (id_priv->id.ps) {  in cma_select_inet_ps()
3911 		return id_priv->id.ps;  in cma_select_inet_ps()
3926 	mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK;  in cma_select_ib_ps()
3927 	sid = be64_to_cpu(sib->sib_sid) & mask;  in cma_select_ib_ps()
3929 	if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) {  in cma_select_ib_ps()
3932 	} else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) &&  in cma_select_ib_ps()
3936 	} else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) &&  in cma_select_ib_ps()
3943 		sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib)));  in cma_select_ib_ps()
3944 		sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK |  in cma_select_ib_ps()
3945 						be64_to_cpu(sib->sib_sid_mask));  in cma_select_ib_ps()
3960 		return -EPROTONOSUPPORT;  in cma_get_port()
3978 	if (addr->sa_family != AF_INET6)  in cma_check_linklocal()
3983 	if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL))  in cma_check_linklocal()
3986 	if (!sin6->sin6_scope_id)  in cma_check_linklocal()
3987 			return -EINVAL;  in cma_check_linklocal()
3989 	dev_addr->bound_dev_if = sin6->sin6_scope_id;  in cma_check_linklocal()
3994 int rdma_listen(struct rdma_cm_id *id, int backlog)  in rdma_listen()  argument
3997 		container_of(id, struct rdma_id_private, id);  in rdma_listen()
4007 		ret = rdma_bind_addr(id, (struct sockaddr *)&any_in);  in rdma_listen()
4012 			return -EINVAL;  in rdma_listen()
4016 	 * Once the ID reaches RDMA_CM_LISTEN it is not allowed to be reusable  in rdma_listen()
4019 	if (id_priv->reuseaddr) {  in rdma_listen()
4021 		ret = cma_check_port(id_priv->bind_list, id_priv, 0);  in rdma_listen()
4023 			id_priv->reuseaddr = 0;  in rdma_listen()
4029 	id_priv->backlog = backlog;  in rdma_listen()
4030 	if (id_priv->cma_dev) {  in rdma_listen()
4031 		if (rdma_cap_ib_cm(id->device, 1)) {  in rdma_listen()
4035 		} else if (rdma_cap_iw_cm(id->device, 1)) {  in rdma_listen()
4040 			ret = -ENOSYS;  in rdma_listen()
4051 	id_priv->backlog = 0;  in rdma_listen()
4061 int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)  in rdma_bind_addr()  argument
4067 	if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 &&  in rdma_bind_addr()
4068 	    addr->sa_family != AF_IB)  in rdma_bind_addr()
4069 		return -EAFNOSUPPORT;  in rdma_bind_addr()
4071 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_bind_addr()
4073 		return -EINVAL;  in rdma_bind_addr()
4075 	ret = cma_check_linklocal(&id->route.addr.dev_addr, addr);  in rdma_bind_addr()
4081 		ret = cma_translate_addr(addr, &id->route.addr.dev_addr);  in rdma_bind_addr()
4090 	if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) {  in rdma_bind_addr()
4091 		if (addr->sa_family == AF_INET)  in rdma_bind_addr()
4092 			id_priv->afonly = 1;  in rdma_bind_addr()
4094 		else if (addr->sa_family == AF_INET6) {  in rdma_bind_addr()
4095 			struct net *net = id_priv->id.route.addr.dev_addr.net;  in rdma_bind_addr()
4097 			id_priv->afonly = net->ipv6.sysctl.bindv6only;  in rdma_bind_addr()
4102 	daddr->sa_family = addr->sa_family;  in rdma_bind_addr()
4109 		rdma_restrack_add(&id_priv->res);  in rdma_bind_addr()
4112 	if (id_priv->cma_dev)  in rdma_bind_addr()
4125 	cma_hdr->cma_version = CMA_VERSION;  in cma_format_hdr()
4133 		cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr;  in cma_format_hdr()
4134 		cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr;  in cma_format_hdr()
4135 		cma_hdr->port = src4->sin_port;  in cma_format_hdr()
4143 		cma_hdr->src_addr.ip6 = src6->sin6_addr;  in cma_format_hdr()
4144 		cma_hdr->dst_addr.ip6 = dst6->sin6_addr;  in cma_format_hdr()
4145 		cma_hdr->port = src6->sin6_port;  in cma_format_hdr()
4153 	struct rdma_id_private *id_priv = cm_id->context;  in cma_sidr_rep_handler()
4156 				&ib_event->param.sidr_rep_rcvd;  in cma_sidr_rep_handler()
4159 	mutex_lock(&id_priv->handler_mutex);  in cma_sidr_rep_handler()
4160 	if (READ_ONCE(id_priv->state) != RDMA_CM_CONNECT)  in cma_sidr_rep_handler()
4163 	switch (ib_event->event) {  in cma_sidr_rep_handler()
4166 		event.status = -ETIMEDOUT;  in cma_sidr_rep_handler()
4169 		event.param.ud.private_data = ib_event->private_data;  in cma_sidr_rep_handler()
4171 		if (rep->status != IB_SIDR_SUCCESS) {  in cma_sidr_rep_handler()
4173 			event.status = ib_event->param.sidr_rep_rcvd.status;  in cma_sidr_rep_handler()
4178 		ret = cma_set_qkey(id_priv, rep->qkey);  in cma_sidr_rep_handler()
4185 		ib_init_ah_attr_from_path(id_priv->id.device,  in cma_sidr_rep_handler()
4186 					  id_priv->id.port_num,  in cma_sidr_rep_handler()
4187 					  id_priv->id.route.path_rec,  in cma_sidr_rep_handler()
4189 					  rep->sgid_attr);  in cma_sidr_rep_handler()
4190 		event.param.ud.qp_num = rep->qpn;  in cma_sidr_rep_handler()
4191 		event.param.ud.qkey = rep->qkey;  in cma_sidr_rep_handler()
4197 		       ib_event->event);  in cma_sidr_rep_handler()
4205 		/* Destroy the CM ID by returning a non-zero value. */  in cma_sidr_rep_handler()
4206 		id_priv->cm_id.ib = NULL;  in cma_sidr_rep_handler()
4211 	mutex_unlock(&id_priv->handler_mutex);  in cma_sidr_rep_handler()
4219 	struct ib_cm_id	*id;  in cma_resolve_ib_udp()  local
4226 	if (check_add_overflow(offset, conn_param->private_data_len, &req.private_data_len))  in cma_resolve_ib_udp()
4227 		return -EINVAL;  in cma_resolve_ib_udp()
4232 			return -ENOMEM;  in cma_resolve_ib_udp()
4237 	if (conn_param->private_data && conn_param->private_data_len)  in cma_resolve_ib_udp()
4238 		memcpy(private_data + offset, conn_param->private_data,  in cma_resolve_ib_udp()
4239 		       conn_param->private_data_len);  in cma_resolve_ib_udp()
4248 	id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler,  in cma_resolve_ib_udp()
4250 	if (IS_ERR(id)) {  in cma_resolve_ib_udp()
4251 		ret = PTR_ERR(id);  in cma_resolve_ib_udp()
4254 	id_priv->cm_id.ib = id;  in cma_resolve_ib_udp()
4256 	req.path = id_priv->id.route.path_rec;  in cma_resolve_ib_udp()
4257 	req.sgid_attr = id_priv->id.route.addr.dev_addr.sgid_attr;  in cma_resolve_ib_udp()
4258 	req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));  in cma_resolve_ib_udp()
4259 	req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8);  in cma_resolve_ib_udp()
4263 	ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req);  in cma_resolve_ib_udp()
4265 		ib_destroy_cm_id(id_priv->cm_id.ib);  in cma_resolve_ib_udp()
4266 		id_priv->cm_id.ib = NULL;  in cma_resolve_ib_udp()
4279 	struct ib_cm_id	*id;  in cma_connect_ib()  local
4285 	if (check_add_overflow(offset, conn_param->private_data_len, &req.private_data_len))  in cma_connect_ib()
4286 		return -EINVAL;  in cma_connect_ib()
4291 			return -ENOMEM;  in cma_connect_ib()
4296 	if (conn_param->private_data && conn_param->private_data_len)  in cma_connect_ib()
4297 		memcpy(private_data + offset, conn_param->private_data,  in cma_connect_ib()
4298 		       conn_param->private_data_len);  in cma_connect_ib()
4300 	id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv);  in cma_connect_ib()
4301 	if (IS_ERR(id)) {  in cma_connect_ib()
4302 		ret = PTR_ERR(id);  in cma_connect_ib()
4305 	id_priv->cm_id.ib = id;  in cma_connect_ib()
4307 	route = &id_priv->id.route;  in cma_connect_ib()
4315 	req.primary_path = &route->path_rec[0];  in cma_connect_ib()
4316 	req.primary_path_inbound = route->path_rec_inbound;  in cma_connect_ib()
4317 	req.primary_path_outbound = route->path_rec_outbound;  in cma_connect_ib()
4318 	if (route->num_pri_alt_paths == 2)  in cma_connect_ib()
4319 		req.alternate_path = &route->path_rec[1];  in cma_connect_ib()
4321 	req.ppath_sgid_attr = id_priv->id.route.addr.dev_addr.sgid_attr;  in cma_connect_ib()
4323 	req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));  in cma_connect_ib()
4324 	req.qp_num = id_priv->qp_num;  in cma_connect_ib()
4325 	req.qp_type = id_priv->id.qp_type;  in cma_connect_ib()
4326 	req.starting_psn = id_priv->seq_num;  in cma_connect_ib()
4327 	req.responder_resources = conn_param->responder_resources;  in cma_connect_ib()
4328 	req.initiator_depth = conn_param->initiator_depth;  in cma_connect_ib()
4329 	req.flow_control = conn_param->flow_control;  in cma_connect_ib()
4330 	req.retry_count = min_t(u8, 7, conn_param->retry_count);  in cma_connect_ib()
4331 	req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count);  in cma_connect_ib()
4335 	req.srq = id_priv->srq ? 1 : 0;  in cma_connect_ib()
4336 	req.ece.vendor_id = id_priv->ece.vendor_id;  in cma_connect_ib()
4337 	req.ece.attr_mod = id_priv->ece.attr_mod;  in cma_connect_ib()
4340 	ret = ib_send_cm_req(id_priv->cm_id.ib, &req);  in cma_connect_ib()
4342 	if (ret && !IS_ERR(id)) {  in cma_connect_ib()
4343 		ib_destroy_cm_id(id);  in cma_connect_ib()
4344 		id_priv->cm_id.ib = NULL;  in cma_connect_ib()
4358 	cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv);  in cma_connect_iw()
4362 	mutex_lock(&id_priv->qp_mutex);  in cma_connect_iw()
4363 	cm_id->tos = id_priv->tos;  in cma_connect_iw()
4364 	cm_id->tos_set = id_priv->tos_set;  in cma_connect_iw()
4365 	mutex_unlock(&id_priv->qp_mutex);  in cma_connect_iw()
4367 	id_priv->cm_id.iw = cm_id;  in cma_connect_iw()
4369 	memcpy(&cm_id->local_addr, cma_src_addr(id_priv),  in cma_connect_iw()
4371 	memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv),  in cma_connect_iw()
4379 		iw_param.ord = conn_param->initiator_depth;  in cma_connect_iw()
4380 		iw_param.ird = conn_param->responder_resources;  in cma_connect_iw()
4381 		iw_param.private_data = conn_param->private_data;  in cma_connect_iw()
4382 		iw_param.private_data_len = conn_param->private_data_len;  in cma_connect_iw()
4383 		iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num;  in cma_connect_iw()
4386 		iw_param.qpn = id_priv->qp_num;  in cma_connect_iw()
4392 		id_priv->cm_id.iw = NULL;  in cma_connect_iw()
4398  * rdma_connect_locked - Initiate an active connection request.
4399  * @id: Connection identifier to connect.
4405 int rdma_connect_locked(struct rdma_cm_id *id,  in rdma_connect_locked()  argument
4409 		container_of(id, struct rdma_id_private, id);  in rdma_connect_locked()
4413 		return -EINVAL;  in rdma_connect_locked()
4415 	if (!id->qp) {  in rdma_connect_locked()
4416 		id_priv->qp_num = conn_param->qp_num;  in rdma_connect_locked()
4417 		id_priv->srq = conn_param->srq;  in rdma_connect_locked()
4420 	if (rdma_cap_ib_cm(id->device, id->port_num)) {  in rdma_connect_locked()
4421 		if (id->qp_type == IB_QPT_UD)  in rdma_connect_locked()
4425 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {  in rdma_connect_locked()
4428 		ret = -ENOSYS;  in rdma_connect_locked()
4440  * rdma_connect - Initiate an active connection request.
4441  * @id: Connection identifier to connect.
4451 int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)  in rdma_connect()  argument
4454 		container_of(id, struct rdma_id_private, id);  in rdma_connect()
4457 	mutex_lock(&id_priv->handler_mutex);  in rdma_connect()
4458 	ret = rdma_connect_locked(id, conn_param);  in rdma_connect()
4459 	mutex_unlock(&id_priv->handler_mutex);  in rdma_connect()
4465  * rdma_connect_ece - Initiate an active connection request with ECE data.
4466  * @id: Connection identifier to connect.
4472 int rdma_connect_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,  in rdma_connect_ece()  argument
4476 		container_of(id, struct rdma_id_private, id);  in rdma_connect_ece()
4478 	id_priv->ece.vendor_id = ece->vendor_id;  in rdma_connect_ece()
4479 	id_priv->ece.attr_mod = ece->attr_mod;  in rdma_connect_ece()
4481 	return rdma_connect(id, conn_param);  in rdma_connect_ece()
4500 	rep.qp_num = id_priv->qp_num;  in cma_accept_ib()
4501 	rep.starting_psn = id_priv->seq_num;  in cma_accept_ib()
4502 	rep.private_data = conn_param->private_data;  in cma_accept_ib()
4503 	rep.private_data_len = conn_param->private_data_len;  in cma_accept_ib()
4504 	rep.responder_resources = conn_param->responder_resources;  in cma_accept_ib()
4505 	rep.initiator_depth = conn_param->initiator_depth;  in cma_accept_ib()
4507 	rep.flow_control = conn_param->flow_control;  in cma_accept_ib()
4508 	rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count);  in cma_accept_ib()
4509 	rep.srq = id_priv->srq ? 1 : 0;  in cma_accept_ib()
4510 	rep.ece.vendor_id = id_priv->ece.vendor_id;  in cma_accept_ib()
4511 	rep.ece.attr_mod = id_priv->ece.attr_mod;  in cma_accept_ib()
4514 	ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep);  in cma_accept_ib()
4526 		return -EINVAL;  in cma_accept_iw()
4532 	iw_param.ord = conn_param->initiator_depth;  in cma_accept_iw()
4533 	iw_param.ird = conn_param->responder_resources;  in cma_accept_iw()
4534 	iw_param.private_data = conn_param->private_data;  in cma_accept_iw()
4535 	iw_param.private_data_len = conn_param->private_data_len;  in cma_accept_iw()
4536 	if (id_priv->id.qp)  in cma_accept_iw()
4537 		iw_param.qpn = id_priv->qp_num;  in cma_accept_iw()
4539 		iw_param.qpn = conn_param->qp_num;  in cma_accept_iw()
4541 	return iw_cm_accept(id_priv->cm_id.iw, &iw_param);  in cma_accept_iw()
4557 		rep.qp_num = id_priv->qp_num;  in cma_send_sidr_rep()
4558 		rep.qkey = id_priv->qkey;  in cma_send_sidr_rep()
4560 		rep.ece.vendor_id = id_priv->ece.vendor_id;  in cma_send_sidr_rep()
4561 		rep.ece.attr_mod = id_priv->ece.attr_mod;  in cma_send_sidr_rep()
4568 	return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep);  in cma_send_sidr_rep()
4572  * rdma_accept - Called to accept a connection request or response.
4573  * @id: Connection identifier associated with the request.
4583  * state of the qp associated with the id is modified to error, such that any
4589 int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)  in rdma_accept()  argument
4592 		container_of(id, struct rdma_id_private, id);  in rdma_accept()
4595 	lockdep_assert_held(&id_priv->handler_mutex);  in rdma_accept()
4597 	if (READ_ONCE(id_priv->state) != RDMA_CM_CONNECT)  in rdma_accept()
4598 		return -EINVAL;  in rdma_accept()
4600 	if (!id->qp && conn_param) {  in rdma_accept()
4601 		id_priv->qp_num = conn_param->qp_num;  in rdma_accept()
4602 		id_priv->srq = conn_param->srq;  in rdma_accept()
4605 	if (rdma_cap_ib_cm(id->device, id->port_num)) {  in rdma_accept()
4606 		if (id->qp_type == IB_QPT_UD) {  in rdma_accept()
4609 							conn_param->qkey,  in rdma_accept()
4610 							conn_param->private_data,  in rdma_accept()
4611 							conn_param->private_data_len);  in rdma_accept()
4621 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {  in rdma_accept()
4624 		ret = -ENOSYS;  in rdma_accept()
4632 	rdma_reject(id, NULL, 0, IB_CM_REJ_CONSUMER_DEFINED);  in rdma_accept()
4637 int rdma_accept_ece(struct rdma_cm_id *id, struct rdma_conn_param *conn_param,  in rdma_accept_ece()  argument
4641 		container_of(id, struct rdma_id_private, id);  in rdma_accept_ece()
4643 	id_priv->ece.vendor_id = ece->vendor_id;  in rdma_accept_ece()
4644 	id_priv->ece.attr_mod = ece->attr_mod;  in rdma_accept_ece()
4646 	return rdma_accept(id, conn_param);  in rdma_accept_ece()
4650 void rdma_lock_handler(struct rdma_cm_id *id)  in rdma_lock_handler()  argument
4653 		container_of(id, struct rdma_id_private, id);  in rdma_lock_handler()
4655 	mutex_lock(&id_priv->handler_mutex);  in rdma_lock_handler()
4659 void rdma_unlock_handler(struct rdma_cm_id *id)  in rdma_unlock_handler()  argument
4662 		container_of(id, struct rdma_id_private, id);  in rdma_unlock_handler()
4664 	mutex_unlock(&id_priv->handler_mutex);  in rdma_unlock_handler()
4668 int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event)  in rdma_notify()  argument
4673 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_notify()
4674 	if (!id_priv->cm_id.ib)  in rdma_notify()
4675 		return -EINVAL;  in rdma_notify()
4677 	switch (id->device->node_type) {  in rdma_notify()
4679 		ret = ib_cm_notify(id_priv->cm_id.ib, event);  in rdma_notify()
4689 int rdma_reject(struct rdma_cm_id *id, const void *private_data,  in rdma_reject()  argument
4695 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_reject()
4696 	if (!id_priv->cm_id.ib)  in rdma_reject()
4697 		return -EINVAL;  in rdma_reject()
4699 	if (rdma_cap_ib_cm(id->device, id->port_num)) {  in rdma_reject()
4700 		if (id->qp_type == IB_QPT_UD) {  in rdma_reject()
4705 			ret = ib_send_cm_rej(id_priv->cm_id.ib, reason, NULL, 0,  in rdma_reject()
4708 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {  in rdma_reject()
4709 		ret = iw_cm_reject(id_priv->cm_id.iw,  in rdma_reject()
4712 		ret = -ENOSYS;  in rdma_reject()
4719 int rdma_disconnect(struct rdma_cm_id *id)  in rdma_disconnect()  argument
4724 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_disconnect()
4725 	if (!id_priv->cm_id.ib)  in rdma_disconnect()
4726 		return -EINVAL;  in rdma_disconnect()
4728 	if (rdma_cap_ib_cm(id->device, id->port_num)) {  in rdma_disconnect()
4734 		if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) {  in rdma_disconnect()
4735 			if (!ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0))  in rdma_disconnect()
4740 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {  in rdma_disconnect()
4741 		ret = iw_cm_disconnect(id_priv->cm_id.iw, 0);  in rdma_disconnect()
4743 		ret = -EINVAL;  in rdma_disconnect()
4760 		status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey));  in cma_make_mc_event()
4765 	event->status = status;  in cma_make_mc_event()
4766 	event->param.ud.private_data = mc->context;  in cma_make_mc_event()
4768 		event->event = RDMA_CM_EVENT_MULTICAST_ERROR;  in cma_make_mc_event()
4772 	dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_make_mc_event()
4773 	ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if);  in cma_make_mc_event()
4775 		id_priv->cma_dev  in cma_make_mc_event()
4776 			->default_gid_type[id_priv->id.port_num -  in cma_make_mc_event()
4778 						   id_priv->cma_dev->device)];  in cma_make_mc_event()
4780 	event->event = RDMA_CM_EVENT_MULTICAST_JOIN;  in cma_make_mc_event()
4781 	if (ib_init_ah_from_mcmember(id_priv->id.device, id_priv->id.port_num,  in cma_make_mc_event()
4782 				     &multicast->rec, ndev, gid_type,  in cma_make_mc_event()
4783 				     &event->param.ud.ah_attr)) {  in cma_make_mc_event()
4784 		event->event = RDMA_CM_EVENT_MULTICAST_ERROR;  in cma_make_mc_event()
4788 	event->param.ud.qp_num = 0xFFFFFF;  in cma_make_mc_event()
4789 	event->param.ud.qkey = be32_to_cpu(multicast->rec.qkey);  in cma_make_mc_event()
4798 	struct cma_multicast *mc = multicast->context;  in cma_ib_mc_handler()
4799 	struct rdma_id_private *id_priv = mc->id_priv;  in cma_ib_mc_handler()
4803 	mutex_lock(&id_priv->handler_mutex);  in cma_ib_mc_handler()
4804 	if (READ_ONCE(id_priv->state) == RDMA_CM_DEVICE_REMOVAL ||  in cma_ib_mc_handler()
4805 	    READ_ONCE(id_priv->state) == RDMA_CM_DESTROYING)  in cma_ib_mc_handler()
4814 	mutex_unlock(&id_priv->handler_mutex);  in cma_ib_mc_handler()
4822 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_set_mgid()
4828 	} else if ((addr->sa_family == AF_INET6) &&  in cma_set_mgid()
4829 		   ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) ==  in cma_set_mgid()
4832 		memcpy(mgid, &sin6->sin6_addr, sizeof *mgid);  in cma_set_mgid()
4833 	} else if (addr->sa_family == AF_IB) {  in cma_set_mgid()
4834 		memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid);  in cma_set_mgid()
4835 	} else if (addr->sa_family == AF_INET6) {  in cma_set_mgid()
4836 		ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map);  in cma_set_mgid()
4837 		if (id_priv->id.ps == RDMA_PS_UDP)  in cma_set_mgid()
4841 		ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map);  in cma_set_mgid()
4842 		if (id_priv->id.ps == RDMA_PS_UDP)  in cma_set_mgid()
4852 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_join_ib_multicast()
4857 	ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num,  in cma_join_ib_multicast()
4866 	cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid);  in cma_join_ib_multicast()
4867 	rec.qkey = cpu_to_be32(id_priv->qkey);  in cma_join_ib_multicast()
4870 	rec.join_state = mc->join_state;  in cma_join_ib_multicast()
4878 	if (id_priv->id.ps == RDMA_PS_IPOIB)  in cma_join_ib_multicast()
4885 	mc->sa_mc = ib_sa_join_multicast(&sa_client, id_priv->id.device,  in cma_join_ib_multicast()
4886 					 id_priv->id.port_num, &rec, comp_mask,  in cma_join_ib_multicast()
4888 	return PTR_ERR_OR_ZERO(mc->sa_mc);  in cma_join_ib_multicast()
4899 	} else if (addr->sa_family == AF_INET6) {  in cma_iboe_set_mgid()
4900 		memcpy(mgid, &sin6->sin6_addr, sizeof *mgid);  in cma_iboe_set_mgid()
4902 		mgid->raw[0] =  in cma_iboe_set_mgid()
4904 		mgid->raw[1] =  in cma_iboe_set_mgid()
4906 		mgid->raw[2] = 0;  in cma_iboe_set_mgid()
4907 		mgid->raw[3] = 0;  in cma_iboe_set_mgid()
4908 		mgid->raw[4] = 0;  in cma_iboe_set_mgid()
4909 		mgid->raw[5] = 0;  in cma_iboe_set_mgid()
4910 		mgid->raw[6] = 0;  in cma_iboe_set_mgid()
4911 		mgid->raw[7] = 0;  in cma_iboe_set_mgid()
4912 		mgid->raw[8] = 0;  in cma_iboe_set_mgid()
4913 		mgid->raw[9] = 0;  in cma_iboe_set_mgid()
4914 		mgid->raw[10] = 0xff;  in cma_iboe_set_mgid()
4915 		mgid->raw[11] = 0xff;  in cma_iboe_set_mgid()
4916 		*(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr;  in cma_iboe_set_mgid()
4923 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_iboe_join_multicast()
4925 	struct sockaddr *addr = (struct sockaddr *)&mc->addr;  in cma_iboe_join_multicast()
4931 	send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN);  in cma_iboe_join_multicast()
4934 		return -EINVAL;  in cma_iboe_join_multicast()
4936 	gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num -  in cma_iboe_join_multicast()
4937 		   rdma_start_port(id_priv->cma_dev->device)];  in cma_iboe_join_multicast()
4941 	if (id_priv->id.ps == RDMA_PS_UDP)  in cma_iboe_join_multicast()
4944 	if (dev_addr->bound_dev_if)  in cma_iboe_join_multicast()
4945 		ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if);  in cma_iboe_join_multicast()
4947 		return -ENODEV;  in cma_iboe_join_multicast()
4951 	ib.rec.mtu = iboe_get_mtu(ndev->mtu);  in cma_iboe_join_multicast()
4953 	if (addr->sa_family == AF_INET) {  in cma_iboe_join_multicast()
4963 			err = -ENOTSUPP;  in cma_iboe_join_multicast()
4967 		return err ?: -EINVAL;  in cma_iboe_join_multicast()
4969 	rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr,  in cma_iboe_join_multicast()
4971 	INIT_WORK(&mc->iboe_join.work, cma_iboe_join_work_handler);  in cma_iboe_join_multicast()
4972 	cma_make_mc_event(0, id_priv, &ib, &mc->iboe_join.event, mc);  in cma_iboe_join_multicast()
4973 	queue_work(cma_wq, &mc->iboe_join.work);  in cma_iboe_join_multicast()
4977 int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,  in rdma_join_multicast()  argument
4981 		container_of(id, struct rdma_id_private, id);  in rdma_join_multicast()
4986 	if (WARN_ON(id->qp))  in rdma_join_multicast()
4987 		return -EINVAL;  in rdma_join_multicast()
4990 	if (!id->device || (READ_ONCE(id_priv->state) != RDMA_CM_ADDR_BOUND &&  in rdma_join_multicast()
4991 			    READ_ONCE(id_priv->state) != RDMA_CM_ADDR_RESOLVED))  in rdma_join_multicast()
4992 		return -EINVAL;  in rdma_join_multicast()
4996 		return -ENOMEM;  in rdma_join_multicast()
4998 	memcpy(&mc->addr, addr, rdma_addr_size(addr));  in rdma_join_multicast()
4999 	mc->context = context;  in rdma_join_multicast()
5000 	mc->id_priv = id_priv;  in rdma_join_multicast()
5001 	mc->join_state = join_state;  in rdma_join_multicast()
5003 	if (rdma_protocol_roce(id->device, id->port_num)) {  in rdma_join_multicast()
5007 	} else if (rdma_cap_ib_mcast(id->device, id->port_num)) {  in rdma_join_multicast()
5012 		ret = -ENOSYS;  in rdma_join_multicast()
5016 	spin_lock(&id_priv->lock);  in rdma_join_multicast()
5017 	list_add(&mc->list, &id_priv->mc_list);  in rdma_join_multicast()
5018 	spin_unlock(&id_priv->lock);  in rdma_join_multicast()
5027 void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)  in rdma_leave_multicast()  argument
5032 	id_priv = container_of(id, struct rdma_id_private, id);  in rdma_leave_multicast()
5033 	spin_lock_irq(&id_priv->lock);  in rdma_leave_multicast()
5034 	list_for_each_entry(mc, &id_priv->mc_list, list) {  in rdma_leave_multicast()
5035 		if (memcmp(&mc->addr, addr, rdma_addr_size(addr)) != 0)  in rdma_leave_multicast()
5037 		list_del(&mc->list);  in rdma_leave_multicast()
5038 		spin_unlock_irq(&id_priv->lock);  in rdma_leave_multicast()
5040 		WARN_ON(id_priv->cma_dev->device != id->device);  in rdma_leave_multicast()
5044 	spin_unlock_irq(&id_priv->lock);  in rdma_leave_multicast()
5053 	dev_addr = &id_priv->id.route.addr.dev_addr;  in cma_netdev_change()
5055 	if ((dev_addr->bound_dev_if == ndev->ifindex) &&  in cma_netdev_change()
5056 	    (net_eq(dev_net(ndev), dev_addr->net)) &&  in cma_netdev_change()
5057 	    memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) {  in cma_netdev_change()
5058 		pr_info("RDMA CM addr change for ndev %s used by id %p\n",  in cma_netdev_change()
5059 			ndev->name, &id_priv->id);  in cma_netdev_change()
5062 			return -ENOMEM;  in cma_netdev_change()
5064 		INIT_WORK(&work->work, cma_work_handler);  in cma_netdev_change()
5065 		work->id = id_priv;  in cma_netdev_change()
5066 		work->event.event = RDMA_CM_EVENT_ADDR_CHANGE;  in cma_netdev_change()
5068 		queue_work(cma_wq, &work->work);  in cma_netdev_change()
5090 		list_for_each_entry(id_priv, &cma_dev->id_list, device_item) {  in cma_netdev_callback()
5104 		container_of(_work, struct rdma_id_private, id.net_work);  in cma_netevent_work_handler()
5107 	mutex_lock(&id_priv->handler_mutex);  in cma_netevent_work_handler()
5109 	if (READ_ONCE(id_priv->state) == RDMA_CM_DESTROYING ||  in cma_netevent_work_handler()
5110 	    READ_ONCE(id_priv->state) == RDMA_CM_DEVICE_REMOVAL)  in cma_netevent_work_handler()
5114 	event.status = -ETIMEDOUT;  in cma_netevent_work_handler()
5117 		__acquire(&id_priv->handler_mutex);  in cma_netevent_work_handler()
5118 		id_priv->cm_id.ib = NULL;  in cma_netevent_work_handler()
5125 	mutex_unlock(&id_priv->handler_mutex);  in cma_netevent_work_handler()
5141 	if (neigh->tbl->family == AF_INET6) {  in cma_netevent_callback()
5145 		neigh_sock_6.sin6_addr = *(struct in6_addr *)neigh->primary_key;  in cma_netevent_callback()
5146 		ips_node = node_from_ndev_ip(&id_table, neigh->dev->ifindex,  in cma_netevent_callback()
5148 	} else if (neigh->tbl->family == AF_INET) {  in cma_netevent_callback()
5152 		neigh_sock_4.sin_addr.s_addr = *(__be32 *)(neigh->primary_key);  in cma_netevent_callback()
5153 		ips_node = node_from_ndev_ip(&id_table, neigh->dev->ifindex,  in cma_netevent_callback()
5161 	list_for_each_entry(current_id, &ips_node->id_list, id_list_entry) {  in cma_netevent_callback()
5162 		if (!memcmp(current_id->id.route.addr.dev_addr.dst_dev_addr,  in cma_netevent_callback()
5163 			   neigh->ha, ETH_ALEN))  in cma_netevent_callback()
5165 		INIT_WORK(&current_id->id.net_work, cma_netevent_work_handler);  in cma_netevent_callback()
5167 		queue_work(cma_wq, &current_id->id.net_work);  in cma_netevent_callback()
5188 	mutex_lock(&id_priv->handler_mutex);  in cma_send_device_removal_put()
5189 	/* Record that we want to remove the device */  in cma_send_device_removal_put()
5190 	spin_lock_irqsave(&id_priv->lock, flags);  in cma_send_device_removal_put()
5191 	state = id_priv->state;  in cma_send_device_removal_put()
5193 		spin_unlock_irqrestore(&id_priv->lock, flags);  in cma_send_device_removal_put()
5194 		mutex_unlock(&id_priv->handler_mutex);  in cma_send_device_removal_put()
5198 	id_priv->state = RDMA_CM_DEVICE_REMOVAL;  in cma_send_device_removal_put()
5199 	spin_unlock_irqrestore(&id_priv->lock, flags);  in cma_send_device_removal_put()
5207 		mutex_unlock(&id_priv->handler_mutex);  in cma_send_device_removal_put()
5212 	mutex_unlock(&id_priv->handler_mutex);  in cma_send_device_removal_put()
5225 	while (!list_empty(&cma_dev->id_list)) {  in cma_process_remove()
5227 			&cma_dev->id_list, struct rdma_id_private, device_item);  in cma_process_remove()
5229 		list_del_init(&id_priv->listen_item);  in cma_process_remove()
5230 		list_del_init(&id_priv->device_item);  in cma_process_remove()
5241 	wait_for_completion(&cma_dev->comp);  in cma_process_remove()
5244 static bool cma_supported(struct ib_device *device)  in cma_supported()  argument
5248 	rdma_for_each_port(device, i) {  in cma_supported()
5249 		if (rdma_cap_ib_cm(device, i) || rdma_cap_iw_cm(device, i))  in cma_supported()
5255 static int cma_add_one(struct ib_device *device)  in cma_add_one()  argument
5264 	if (!cma_supported(device))  in cma_add_one()
5265 		return -EOPNOTSUPP;  in cma_add_one()
5269 		return -ENOMEM;  in cma_add_one()
5271 	cma_dev->device = device;  in cma_add_one()
5272 	cma_dev->default_gid_type = kcalloc(device->phys_port_cnt,  in cma_add_one()
5273 					    sizeof(*cma_dev->default_gid_type),  in cma_add_one()
5275 	if (!cma_dev->default_gid_type) {  in cma_add_one()
5276 		ret = -ENOMEM;  in cma_add_one()
5280 	cma_dev->default_roce_tos = kcalloc(device->phys_port_cnt,  in cma_add_one()
5281 					    sizeof(*cma_dev->default_roce_tos),  in cma_add_one()
5283 	if (!cma_dev->default_roce_tos) {  in cma_add_one()
5284 		ret = -ENOMEM;  in cma_add_one()
5288 	rdma_for_each_port (device, i) {  in cma_add_one()
5289 		supported_gids = roce_gid_type_mask_support(device, i);  in cma_add_one()
5292 			cma_dev->default_gid_type[i - rdma_start_port(device)] =  in cma_add_one()
5295 			cma_dev->default_gid_type[i - rdma_start_port(device)] =  in cma_add_one()
5297 		cma_dev->default_roce_tos[i - rdma_start_port(device)] = 0;  in cma_add_one()
5300 	init_completion(&cma_dev->comp);  in cma_add_one()
5301 	refcount_set(&cma_dev->refcount, 1);  in cma_add_one()
5302 	INIT_LIST_HEAD(&cma_dev->id_list);  in cma_add_one()
5303 	ib_set_client_data(device, &cma_client, cma_dev);  in cma_add_one()
5306 	list_add_tail(&cma_dev->list, &dev_list);  in cma_add_one()
5314 	trace_cm_add_one(device);  in cma_add_one()
5318 	list_del(&cma_dev->list);  in cma_add_one()
5323 	kfree(cma_dev->default_roce_tos);  in cma_add_one()
5325 	kfree(cma_dev->default_gid_type);  in cma_add_one()
5332 static void cma_remove_one(struct ib_device *device, void *client_data)  in cma_remove_one()  argument
5336 	trace_cm_remove_one(device);  in cma_remove_one()
5339 	list_del(&cma_dev->list);  in cma_remove_one()
5343 	kfree(cma_dev->default_roce_tos);  in cma_remove_one()
5344 	kfree(cma_dev->default_gid_type);  in cma_remove_one()
5352 	xa_init(&pernet->tcp_ps);  in cma_init_net()
5353 	xa_init(&pernet->udp_ps);  in cma_init_net()
5354 	xa_init(&pernet->ipoib_ps);  in cma_init_net()
5355 	xa_init(&pernet->ib_ps);  in cma_init_net()
5364 	WARN_ON(!xa_empty(&pernet->tcp_ps));  in cma_exit_net()
5365 	WARN_ON(!xa_empty(&pernet->udp_ps));  in cma_exit_net()
5366 	WARN_ON(!xa_empty(&pernet->ipoib_ps));  in cma_exit_net()
5367 	WARN_ON(!xa_empty(&pernet->ib_ps));  in cma_exit_net()
5373 	.id = &cma_pernet_id,
5396 		return -ENOMEM;  in cma_init()