2 * Copyright (c) 2005 Voltaire Inc. All rights reserved.
3 * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
4 * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved.
5 * Copyright (c) 2005 Intel Corporation. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/mutex.h>
37 #include <linux/inetdevice.h>
38 #include <linux/slab.h>
39 #include <linux/workqueue.h>
40 #include <linux/module.h>
42 #include <net/neighbour.h>
43 #include <net/route.h>
44 #include <net/netevent.h>
45 #include <net/addrconf.h>
46 #include <net/ip6_route.h>
47 #include <rdma/ib_addr.h>
49 #include <rdma/rdma_netlink.h>
50 #include <net/netlink.h>
52 #include "core_priv.h"
55 struct list_head list;
56 struct sockaddr_storage src_addr;
57 struct sockaddr_storage dst_addr;
58 struct rdma_dev_addr *addr;
59 struct rdma_addr_client *client;
61 void (*callback)(int status, struct sockaddr *src_addr,
62 struct rdma_dev_addr *addr, void *context);
63 unsigned long timeout;
64 struct delayed_work work;
69 static atomic_t ib_nl_addr_request_seq = ATOMIC_INIT(0);
71 static void process_req(struct work_struct *work);
73 static DEFINE_MUTEX(lock);
74 static LIST_HEAD(req_list);
75 static DECLARE_DELAYED_WORK(work, process_req);
76 static struct workqueue_struct *addr_wq;
78 static const struct nla_policy ib_nl_addr_policy[LS_NLA_TYPE_MAX] = {
79 [LS_NLA_TYPE_DGID] = {.type = NLA_BINARY,
80 .len = sizeof(struct rdma_nla_ls_gid)},
83 static inline bool ib_nl_is_good_ip_resp(const struct nlmsghdr *nlh)
85 struct nlattr *tb[LS_NLA_TYPE_MAX] = {};
88 if (nlh->nlmsg_flags & RDMA_NL_LS_F_ERR)
91 ret = nla_parse(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh),
92 nlmsg_len(nlh), ib_nl_addr_policy, NULL);
99 static void ib_nl_process_good_ip_rsep(const struct nlmsghdr *nlh)
101 const struct nlattr *head, *curr;
103 struct addr_req *req;
107 head = (const struct nlattr *)nlmsg_data(nlh);
108 len = nlmsg_len(nlh);
110 nla_for_each_attr(curr, head, len, rem) {
111 if (curr->nla_type == LS_NLA_TYPE_DGID)
112 memcpy(&gid, nla_data(curr), nla_len(curr));
116 list_for_each_entry(req, &req_list, list) {
117 if (nlh->nlmsg_seq != req->seq)
119 /* We set the DGID part, the rest was set earlier */
120 rdma_addr_set_dgid(req->addr, &gid);
128 pr_info("Couldn't find request waiting for DGID: %pI6\n",
132 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
133 struct nlmsghdr *nlh,
134 struct netlink_ext_ack *extack)
136 if ((nlh->nlmsg_flags & NLM_F_REQUEST) ||
137 !(NETLINK_CB(skb).sk))
140 if (ib_nl_is_good_ip_resp(nlh))
141 ib_nl_process_good_ip_rsep(nlh);
146 static int ib_nl_ip_send_msg(struct rdma_dev_addr *dev_addr,
150 struct sk_buff *skb = NULL;
151 struct nlmsghdr *nlh;
152 struct rdma_ls_ip_resolve_header *header;
158 if (family == AF_INET) {
159 size = sizeof(struct in_addr);
160 attrtype = RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_IPV4;
162 size = sizeof(struct in6_addr);
163 attrtype = RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_IPV6;
166 len = nla_total_size(sizeof(size));
167 len += NLMSG_ALIGN(sizeof(*header));
169 skb = nlmsg_new(len, GFP_KERNEL);
173 data = ibnl_put_msg(skb, &nlh, seq, 0, RDMA_NL_LS,
174 RDMA_NL_LS_OP_IP_RESOLVE, NLM_F_REQUEST);
180 /* Construct the family header first */
181 header = skb_put(skb, NLMSG_ALIGN(sizeof(*header)));
182 header->ifindex = dev_addr->bound_dev_if;
183 nla_put(skb, attrtype, size, daddr);
185 /* Repair the nlmsg header length */
187 rdma_nl_multicast(skb, RDMA_NL_GROUP_LS, GFP_KERNEL);
189 /* Make the request retry, so when we get the response from userspace
190 * we will have something.
195 int rdma_addr_size(struct sockaddr *addr)
197 switch (addr->sa_family) {
199 return sizeof(struct sockaddr_in);
201 return sizeof(struct sockaddr_in6);
203 return sizeof(struct sockaddr_ib);
208 EXPORT_SYMBOL(rdma_addr_size);
210 int rdma_addr_size_in6(struct sockaddr_in6 *addr)
212 int ret = rdma_addr_size((struct sockaddr *) addr);
214 return ret <= sizeof(*addr) ? ret : 0;
216 EXPORT_SYMBOL(rdma_addr_size_in6);
218 int rdma_addr_size_kss(struct __kernel_sockaddr_storage *addr)
220 int ret = rdma_addr_size((struct sockaddr *) addr);
222 return ret <= sizeof(*addr) ? ret : 0;
224 EXPORT_SYMBOL(rdma_addr_size_kss);
226 static struct rdma_addr_client self;
228 void rdma_addr_register_client(struct rdma_addr_client *client)
230 atomic_set(&client->refcount, 1);
231 init_completion(&client->comp);
233 EXPORT_SYMBOL(rdma_addr_register_client);
235 static inline void put_client(struct rdma_addr_client *client)
237 if (atomic_dec_and_test(&client->refcount))
238 complete(&client->comp);
241 void rdma_addr_unregister_client(struct rdma_addr_client *client)
244 wait_for_completion(&client->comp);
246 EXPORT_SYMBOL(rdma_addr_unregister_client);
248 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
249 const unsigned char *dst_dev_addr)
251 dev_addr->dev_type = dev->type;
252 memcpy(dev_addr->src_dev_addr, dev->dev_addr, MAX_ADDR_LEN);
253 memcpy(dev_addr->broadcast, dev->broadcast, MAX_ADDR_LEN);
255 memcpy(dev_addr->dst_dev_addr, dst_dev_addr, MAX_ADDR_LEN);
256 dev_addr->bound_dev_if = dev->ifindex;
259 EXPORT_SYMBOL(rdma_copy_addr);
261 int rdma_translate_ip(const struct sockaddr *addr,
262 struct rdma_dev_addr *dev_addr,
265 struct net_device *dev;
266 int ret = -EADDRNOTAVAIL;
268 if (dev_addr->bound_dev_if) {
269 dev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if);
272 ret = rdma_copy_addr(dev_addr, dev, NULL);
277 switch (addr->sa_family) {
279 dev = ip_dev_find(dev_addr->net,
280 ((const struct sockaddr_in *)addr)->sin_addr.s_addr);
285 ret = rdma_copy_addr(dev_addr, dev, NULL);
286 dev_addr->bound_dev_if = dev->ifindex;
288 *vlan_id = rdma_vlan_dev_vlan_id(dev);
291 #if IS_ENABLED(CONFIG_IPV6)
294 for_each_netdev_rcu(dev_addr->net, dev) {
295 if (ipv6_chk_addr(dev_addr->net,
296 &((const struct sockaddr_in6 *)addr)->sin6_addr,
298 ret = rdma_copy_addr(dev_addr, dev, NULL);
299 dev_addr->bound_dev_if = dev->ifindex;
301 *vlan_id = rdma_vlan_dev_vlan_id(dev);
311 EXPORT_SYMBOL(rdma_translate_ip);
313 static void set_timeout(struct delayed_work *delayed_work, unsigned long time)
317 delay = time - jiffies;
321 mod_delayed_work(addr_wq, delayed_work, delay);
324 static void queue_req(struct addr_req *req)
326 struct addr_req *temp_req;
329 list_for_each_entry_reverse(temp_req, &req_list, list) {
330 if (time_after_eq(req->timeout, temp_req->timeout))
334 list_add(&req->list, &temp_req->list);
336 set_timeout(&req->work, req->timeout);
340 static int ib_nl_fetch_ha(struct dst_entry *dst, struct rdma_dev_addr *dev_addr,
341 const void *daddr, u32 seq, u16 family)
343 if (rdma_nl_chk_listeners(RDMA_NL_GROUP_LS))
344 return -EADDRNOTAVAIL;
346 /* We fill in what we can, the response will fill the rest */
347 rdma_copy_addr(dev_addr, dst->dev, NULL);
348 return ib_nl_ip_send_msg(dev_addr, daddr, seq, family);
351 static int dst_fetch_ha(struct dst_entry *dst, struct rdma_dev_addr *dev_addr,
357 n = dst_neigh_lookup(dst, daddr);
360 if (!n || !(n->nud_state & NUD_VALID)) {
362 neigh_event_send(n, NULL);
365 ret = rdma_copy_addr(dev_addr, dst->dev, n->ha);
375 static bool has_gateway(struct dst_entry *dst, sa_family_t family)
378 struct rt6_info *rt6;
380 if (family == AF_INET) {
381 rt = container_of(dst, struct rtable, dst);
382 return rt->rt_uses_gateway;
385 rt6 = container_of(dst, struct rt6_info, dst);
386 return rt6->rt6i_flags & RTF_GATEWAY;
389 static int fetch_ha(struct dst_entry *dst, struct rdma_dev_addr *dev_addr,
390 const struct sockaddr *dst_in, u32 seq)
392 const struct sockaddr_in *dst_in4 =
393 (const struct sockaddr_in *)dst_in;
394 const struct sockaddr_in6 *dst_in6 =
395 (const struct sockaddr_in6 *)dst_in;
396 const void *daddr = (dst_in->sa_family == AF_INET) ?
397 (const void *)&dst_in4->sin_addr.s_addr :
398 (const void *)&dst_in6->sin6_addr;
399 sa_family_t family = dst_in->sa_family;
401 /* Gateway + ARPHRD_INFINIBAND -> IB router */
402 if (has_gateway(dst, family) && dst->dev->type == ARPHRD_INFINIBAND)
403 return ib_nl_fetch_ha(dst, dev_addr, daddr, seq, family);
405 return dst_fetch_ha(dst, dev_addr, daddr);
408 static int addr4_resolve(struct sockaddr_in *src_in,
409 const struct sockaddr_in *dst_in,
410 struct rdma_dev_addr *addr,
413 __be32 src_ip = src_in->sin_addr.s_addr;
414 __be32 dst_ip = dst_in->sin_addr.s_addr;
419 memset(&fl4, 0, sizeof(fl4));
422 fl4.flowi4_oif = addr->bound_dev_if;
423 rt = ip_route_output_key(addr->net, &fl4);
424 ret = PTR_ERR_OR_ZERO(rt);
428 src_in->sin_family = AF_INET;
429 src_in->sin_addr.s_addr = fl4.saddr;
431 /* If there's a gateway and type of device not ARPHRD_INFINIBAND, we're
432 * definitely in RoCE v2 (as RoCE v1 isn't routable) set the network
435 if (rt->rt_uses_gateway && rt->dst.dev->type != ARPHRD_INFINIBAND)
436 addr->network = RDMA_NETWORK_IPV4;
438 addr->hoplimit = ip4_dst_hoplimit(&rt->dst);
444 #if IS_ENABLED(CONFIG_IPV6)
445 static int addr6_resolve(struct sockaddr_in6 *src_in,
446 const struct sockaddr_in6 *dst_in,
447 struct rdma_dev_addr *addr,
448 struct dst_entry **pdst)
451 struct dst_entry *dst;
454 memset(&fl6, 0, sizeof fl6);
455 fl6.daddr = dst_in->sin6_addr;
456 fl6.saddr = src_in->sin6_addr;
457 fl6.flowi6_oif = addr->bound_dev_if;
459 dst = ipv6_stub->ipv6_dst_lookup_flow(addr->net, NULL, &fl6, NULL);
463 rt = (struct rt6_info *)dst;
464 if (ipv6_addr_any(&src_in->sin6_addr)) {
465 src_in->sin6_family = AF_INET6;
466 src_in->sin6_addr = fl6.saddr;
469 /* If there's a gateway and type of device not ARPHRD_INFINIBAND, we're
470 * definitely in RoCE v2 (as RoCE v1 isn't routable) set the network
473 if (rt->rt6i_flags & RTF_GATEWAY &&
474 ip6_dst_idev(dst)->dev->type != ARPHRD_INFINIBAND)
475 addr->network = RDMA_NETWORK_IPV6;
477 addr->hoplimit = ip6_dst_hoplimit(dst);
483 static int addr6_resolve(struct sockaddr_in6 *src_in,
484 const struct sockaddr_in6 *dst_in,
485 struct rdma_dev_addr *addr,
486 struct dst_entry **pdst)
488 return -EADDRNOTAVAIL;
492 static int addr_resolve_neigh(struct dst_entry *dst,
493 const struct sockaddr *dst_in,
494 struct rdma_dev_addr *addr,
497 if (dst->dev->flags & IFF_LOOPBACK) {
500 ret = rdma_translate_ip(dst_in, addr, NULL);
502 memcpy(addr->dst_dev_addr, addr->src_dev_addr,
508 /* If the device doesn't do ARP internally */
509 if (!(dst->dev->flags & IFF_NOARP))
510 return fetch_ha(dst, addr, dst_in, seq);
512 return rdma_copy_addr(addr, dst->dev, NULL);
515 static int addr_resolve(struct sockaddr *src_in,
516 const struct sockaddr *dst_in,
517 struct rdma_dev_addr *addr,
521 struct net_device *ndev;
522 struct dst_entry *dst;
526 pr_warn_ratelimited("%s: missing namespace\n", __func__);
530 if (src_in->sa_family == AF_INET) {
531 struct rtable *rt = NULL;
532 const struct sockaddr_in *dst_in4 =
533 (const struct sockaddr_in *)dst_in;
535 ret = addr4_resolve((struct sockaddr_in *)src_in,
541 ret = addr_resolve_neigh(&rt->dst, dst_in, addr, seq);
543 if (addr->bound_dev_if) {
544 ndev = dev_get_by_index(addr->net, addr->bound_dev_if);
552 const struct sockaddr_in6 *dst_in6 =
553 (const struct sockaddr_in6 *)dst_in;
555 ret = addr6_resolve((struct sockaddr_in6 *)src_in,
562 ret = addr_resolve_neigh(dst, dst_in, addr, seq);
564 if (addr->bound_dev_if) {
565 ndev = dev_get_by_index(addr->net, addr->bound_dev_if);
574 if (ndev->flags & IFF_LOOPBACK) {
575 ret = rdma_translate_ip(dst_in, addr, NULL);
577 * Put the loopback device and get the translated
581 ndev = dev_get_by_index(addr->net, addr->bound_dev_if);
583 addr->bound_dev_if = ndev->ifindex;
590 static void process_one_req(struct work_struct *_work)
592 struct addr_req *req;
593 struct sockaddr *src_in, *dst_in;
596 req = container_of(_work, struct addr_req, work.work);
598 if (req->status == -ENODATA) {
599 src_in = (struct sockaddr *)&req->src_addr;
600 dst_in = (struct sockaddr *)&req->dst_addr;
601 req->status = addr_resolve(src_in, dst_in, req->addr,
603 if (req->status && time_after_eq(jiffies, req->timeout)) {
604 req->status = -ETIMEDOUT;
605 } else if (req->status == -ENODATA) {
606 /* requeue the work for retrying again */
607 set_timeout(&req->work, req->timeout);
612 list_del(&req->list);
616 * Although the work will normally have been canceled by the
617 * workqueue, it can still be requeued as long as it is on the
618 * req_list, so it could have been requeued before we grabbed &lock.
619 * We need to cancel it after it is removed from req_list to really be
620 * sure it is safe to free.
622 cancel_delayed_work(&req->work);
624 req->callback(req->status, (struct sockaddr *)&req->src_addr,
625 req->addr, req->context);
626 put_client(req->client);
630 static void process_req(struct work_struct *work)
632 struct addr_req *req, *temp_req;
633 struct sockaddr *src_in, *dst_in;
634 struct list_head done_list;
636 INIT_LIST_HEAD(&done_list);
639 list_for_each_entry_safe(req, temp_req, &req_list, list) {
640 if (req->status == -ENODATA) {
641 src_in = (struct sockaddr *) &req->src_addr;
642 dst_in = (struct sockaddr *) &req->dst_addr;
643 req->status = addr_resolve(src_in, dst_in, req->addr,
645 if (req->status && time_after_eq(jiffies, req->timeout))
646 req->status = -ETIMEDOUT;
647 else if (req->status == -ENODATA) {
648 set_timeout(&req->work, req->timeout);
652 list_move_tail(&req->list, &done_list);
657 list_for_each_entry_safe(req, temp_req, &done_list, list) {
658 list_del(&req->list);
659 /* It is safe to cancel other work items from this work item
660 * because at a time there can be only one work item running
661 * with this single threaded work queue.
663 cancel_delayed_work(&req->work);
664 req->callback(req->status, (struct sockaddr *) &req->src_addr,
665 req->addr, req->context);
666 put_client(req->client);
671 int rdma_resolve_ip(struct rdma_addr_client *client,
672 struct sockaddr *src_addr, struct sockaddr *dst_addr,
673 struct rdma_dev_addr *addr, int timeout_ms,
674 void (*callback)(int status, struct sockaddr *src_addr,
675 struct rdma_dev_addr *addr, void *context),
678 struct sockaddr *src_in, *dst_in;
679 struct addr_req *req;
682 req = kzalloc(sizeof *req, GFP_KERNEL);
686 src_in = (struct sockaddr *) &req->src_addr;
687 dst_in = (struct sockaddr *) &req->dst_addr;
690 if (src_addr->sa_family != dst_addr->sa_family) {
695 memcpy(src_in, src_addr, rdma_addr_size(src_addr));
697 src_in->sa_family = dst_addr->sa_family;
700 memcpy(dst_in, dst_addr, rdma_addr_size(dst_addr));
702 req->callback = callback;
703 req->context = context;
704 req->client = client;
705 atomic_inc(&client->refcount);
706 INIT_DELAYED_WORK(&req->work, process_one_req);
707 req->seq = (u32)atomic_inc_return(&ib_nl_addr_request_seq);
709 req->status = addr_resolve(src_in, dst_in, addr, true, req->seq);
710 switch (req->status) {
712 req->timeout = jiffies;
716 req->timeout = msecs_to_jiffies(timeout_ms) + jiffies;
721 atomic_dec(&client->refcount);
729 EXPORT_SYMBOL(rdma_resolve_ip);
731 int rdma_resolve_ip_route(struct sockaddr *src_addr,
732 const struct sockaddr *dst_addr,
733 struct rdma_dev_addr *addr)
735 struct sockaddr_storage ssrc_addr = {};
736 struct sockaddr *src_in = (struct sockaddr *)&ssrc_addr;
739 if (src_addr->sa_family != dst_addr->sa_family)
742 memcpy(src_in, src_addr, rdma_addr_size(src_addr));
744 src_in->sa_family = dst_addr->sa_family;
747 return addr_resolve(src_in, dst_addr, addr, false, 0);
749 EXPORT_SYMBOL(rdma_resolve_ip_route);
751 void rdma_addr_cancel(struct rdma_dev_addr *addr)
753 struct addr_req *req, *temp_req;
756 list_for_each_entry_safe(req, temp_req, &req_list, list) {
757 if (req->addr == addr) {
758 req->status = -ECANCELED;
759 req->timeout = jiffies;
760 list_move(&req->list, &req_list);
761 set_timeout(&req->work, req->timeout);
767 EXPORT_SYMBOL(rdma_addr_cancel);
769 struct resolve_cb_context {
770 struct rdma_dev_addr *addr;
771 struct completion comp;
775 static void resolve_cb(int status, struct sockaddr *src_addr,
776 struct rdma_dev_addr *addr, void *context)
779 memcpy(((struct resolve_cb_context *)context)->addr,
780 addr, sizeof(struct rdma_dev_addr));
781 ((struct resolve_cb_context *)context)->status = status;
782 complete(&((struct resolve_cb_context *)context)->comp);
785 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
786 const union ib_gid *dgid,
787 u8 *dmac, u16 *vlan_id, int *if_index,
791 struct rdma_dev_addr dev_addr;
792 struct resolve_cb_context ctx;
793 struct net_device *dev;
796 struct sockaddr_in _sockaddr_in;
797 struct sockaddr_in6 _sockaddr_in6;
798 } sgid_addr, dgid_addr;
801 rdma_gid2ip((struct sockaddr *)&sgid_addr, sgid);
802 rdma_gid2ip((struct sockaddr *)&dgid_addr, dgid);
804 memset(&dev_addr, 0, sizeof(dev_addr));
806 dev_addr.bound_dev_if = *if_index;
807 dev_addr.net = &init_net;
809 ctx.addr = &dev_addr;
810 init_completion(&ctx.comp);
811 ret = rdma_resolve_ip(&self, (struct sockaddr *)&sgid_addr,
812 (struct sockaddr *)&dgid_addr, &dev_addr, 1000,
817 wait_for_completion(&ctx.comp);
823 memcpy(dmac, dev_addr.dst_dev_addr, ETH_ALEN);
824 dev = dev_get_by_index(&init_net, dev_addr.bound_dev_if);
828 *if_index = dev_addr.bound_dev_if;
830 *vlan_id = rdma_vlan_dev_vlan_id(dev);
832 *hoplimit = dev_addr.hoplimit;
836 EXPORT_SYMBOL(rdma_addr_find_l2_eth_by_grh);
838 int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id)
841 struct rdma_dev_addr dev_addr;
843 struct sockaddr_in _sockaddr_in;
844 struct sockaddr_in6 _sockaddr_in6;
847 rdma_gid2ip((struct sockaddr *)&gid_addr, sgid);
849 memset(&dev_addr, 0, sizeof(dev_addr));
850 dev_addr.net = &init_net;
851 ret = rdma_translate_ip((struct sockaddr *)&gid_addr, &dev_addr, vlan_id);
855 memcpy(smac, dev_addr.src_dev_addr, ETH_ALEN);
858 EXPORT_SYMBOL(rdma_addr_find_smac_by_sgid);
860 static int netevent_callback(struct notifier_block *self, unsigned long event,
863 if (event == NETEVENT_NEIGH_UPDATE) {
864 struct neighbour *neigh = ctx;
866 if (neigh->nud_state & NUD_VALID)
867 set_timeout(&work, jiffies);
872 static struct notifier_block nb = {
873 .notifier_call = netevent_callback
878 addr_wq = alloc_ordered_workqueue("ib_addr", 0);
882 register_netevent_notifier(&nb);
883 rdma_addr_register_client(&self);
888 void addr_cleanup(void)
890 rdma_addr_unregister_client(&self);
891 unregister_netevent_notifier(&nb);
892 destroy_workqueue(addr_wq);