blob: 0efb3d2b338d993ba1b47aba7f4aef3ecc965d55 [file] [log] [blame]
Andy Groverec162272009-02-24 15:30:30 +00001/*
2 * Copyright (c) 2006 Oracle. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33#include <linux/kernel.h>
34#include <linux/in.h>
35#include <linux/if.h>
36#include <linux/netdevice.h>
37#include <linux/inetdevice.h>
38#include <linux/if_arp.h>
39#include <linux/delay.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090040#include <linux/slab.h>
Paul Gortmaker3a9a2312011-05-27 09:12:25 -040041#include <linux/module.h>
Andy Groverec162272009-02-24 15:30:30 +000042
Sowmini Varadhan0cb43962016-06-13 09:44:26 -070043#include "rds_single_path.h"
Andy Groverec162272009-02-24 15:30:30 +000044#include "rds.h"
45#include "ib.h"
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -080046#include "ib_mr.h"
Andy Groverec162272009-02-24 15:30:30 +000047
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -080048unsigned int rds_ib_mr_1m_pool_size = RDS_MR_1M_POOL_SIZE;
49unsigned int rds_ib_mr_8k_pool_size = RDS_MR_8K_POOL_SIZE;
Andy Grover3ba23ad2009-07-17 13:13:22 +000050unsigned int rds_ib_retry_count = RDS_IB_DEFAULT_RETRY_COUNT;
Andy Groverec162272009-02-24 15:30:30 +000051
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -080052module_param(rds_ib_mr_1m_pool_size, int, 0444);
53MODULE_PARM_DESC(rds_ib_mr_1m_pool_size, " Max number of 1M mr per HCA");
54module_param(rds_ib_mr_8k_pool_size, int, 0444);
55MODULE_PARM_DESC(rds_ib_mr_8k_pool_size, " Max number of 8K mr per HCA");
Andy Grover3ba23ad2009-07-17 13:13:22 +000056module_param(rds_ib_retry_count, int, 0444);
57MODULE_PARM_DESC(rds_ib_retry_count, " Number of hw retries before reporting an error");
Andy Groverec162272009-02-24 15:30:30 +000058
Zach Brownea819862010-07-15 12:34:33 -070059/*
60 * we have a clumsy combination of RCU and a rwsem protecting this list
61 * because it is used both in the get_mr fast path and while blocking in
62 * the FMR flushing path.
63 */
64DECLARE_RWSEM(rds_ib_devices_lock);
Andy Groverec162272009-02-24 15:30:30 +000065struct list_head rds_ib_devices;
66
Andy Grover745cbcc2009-04-01 08:20:19 +000067/* NOTE: if also grabbing ibdev lock, grab this first */
Andy Groverec162272009-02-24 15:30:30 +000068DEFINE_SPINLOCK(ib_nodev_conns_lock);
69LIST_HEAD(ib_nodev_conns);
70
stephen hemmingerff51bf82010-10-19 08:08:33 +000071static void rds_ib_nodev_connect(void)
Zach Brownfc19de32010-05-24 13:16:57 -070072{
73 struct rds_ib_connection *ic;
74
75 spin_lock(&ib_nodev_conns_lock);
76 list_for_each_entry(ic, &ib_nodev_conns, ib_node)
77 rds_conn_connect_if_down(ic->conn);
78 spin_unlock(&ib_nodev_conns_lock);
79}
80
stephen hemmingerff51bf82010-10-19 08:08:33 +000081static void rds_ib_dev_shutdown(struct rds_ib_device *rds_ibdev)
Zach Brownfc19de32010-05-24 13:16:57 -070082{
83 struct rds_ib_connection *ic;
84 unsigned long flags;
85
86 spin_lock_irqsave(&rds_ibdev->spinlock, flags);
87 list_for_each_entry(ic, &rds_ibdev->conn_list, ib_node)
88 rds_conn_drop(ic->conn);
89 spin_unlock_irqrestore(&rds_ibdev->spinlock, flags);
90}
91
Zach Brown3e0249f2010-05-18 15:48:51 -070092/*
93 * rds_ib_destroy_mr_pool() blocks on a few things and mrs drop references
94 * from interrupt context so we push freing off into a work struct in krdsd.
95 */
96static void rds_ib_dev_free(struct work_struct *work)
97{
98 struct rds_ib_ipaddr *i_ipaddr, *i_next;
99 struct rds_ib_device *rds_ibdev = container_of(work,
100 struct rds_ib_device, free_work);
101
Santosh Shilimkar06766512015-09-10 21:20:57 -0700102 if (rds_ibdev->mr_8k_pool)
103 rds_ib_destroy_mr_pool(rds_ibdev->mr_8k_pool);
104 if (rds_ibdev->mr_1m_pool)
105 rds_ib_destroy_mr_pool(rds_ibdev->mr_1m_pool);
Zach Brown3e0249f2010-05-18 15:48:51 -0700106 if (rds_ibdev->pd)
107 ib_dealloc_pd(rds_ibdev->pd);
108
109 list_for_each_entry_safe(i_ipaddr, i_next, &rds_ibdev->ipaddr_list, list) {
110 list_del(&i_ipaddr->list);
111 kfree(i_ipaddr);
112 }
113
114 kfree(rds_ibdev);
115}
116
117void rds_ib_dev_put(struct rds_ib_device *rds_ibdev)
118{
119 BUG_ON(atomic_read(&rds_ibdev->refcount) <= 0);
120 if (atomic_dec_and_test(&rds_ibdev->refcount))
121 queue_work(rds_wq, &rds_ibdev->free_work);
122}
123
stephen hemmingerff51bf82010-10-19 08:08:33 +0000124static void rds_ib_add_one(struct ib_device *device)
Andy Groverec162272009-02-24 15:30:30 +0000125{
126 struct rds_ib_device *rds_ibdev;
Andy Groverec162272009-02-24 15:30:30 +0000127
128 /* Only handle IB (no iWARP) devices */
129 if (device->node_type != RDMA_NODE_IB_CA)
130 return;
131
Zach Brown3e0249f2010-05-18 15:48:51 -0700132 rds_ibdev = kzalloc_node(sizeof(struct rds_ib_device), GFP_KERNEL,
133 ibdev_to_node(device));
Andy Groverec162272009-02-24 15:30:30 +0000134 if (!rds_ibdev)
Or Gerlitz03532612015-12-18 10:59:47 +0200135 return;
Andy Groverec162272009-02-24 15:30:30 +0000136
137 spin_lock_init(&rds_ibdev->spinlock);
Zach Brown3e0249f2010-05-18 15:48:51 -0700138 atomic_set(&rds_ibdev->refcount, 1);
139 INIT_WORK(&rds_ibdev->free_work, rds_ib_dev_free);
Andy Groverec162272009-02-24 15:30:30 +0000140
Or Gerlitz03532612015-12-18 10:59:47 +0200141 rds_ibdev->max_wrs = device->attrs.max_qp_wr;
142 rds_ibdev->max_sge = min(device->attrs.max_sge, RDS_IB_MAX_SGE);
Andy Groverec162272009-02-24 15:30:30 +0000143
santosh.shilimkar@oracle.com2cb29122016-03-01 15:20:52 -0800144 rds_ibdev->has_fr = (device->attrs.device_cap_flags &
145 IB_DEVICE_MEM_MGT_EXTENSIONS);
146 rds_ibdev->has_fmr = (device->alloc_fmr && device->dealloc_fmr &&
147 device->map_phys_fmr && device->unmap_fmr);
148 rds_ibdev->use_fastreg = (rds_ibdev->has_fr && !rds_ibdev->has_fmr);
149
Or Gerlitz03532612015-12-18 10:59:47 +0200150 rds_ibdev->fmr_max_remaps = device->attrs.max_map_per_fmr?: 32;
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800151 rds_ibdev->max_1m_mrs = device->attrs.max_mr ?
Or Gerlitz03532612015-12-18 10:59:47 +0200152 min_t(unsigned int, (device->attrs.max_mr / 2),
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800153 rds_ib_mr_1m_pool_size) : rds_ib_mr_1m_pool_size;
Santosh Shilimkar06766512015-09-10 21:20:57 -0700154
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800155 rds_ibdev->max_8k_mrs = device->attrs.max_mr ?
Or Gerlitz03532612015-12-18 10:59:47 +0200156 min_t(unsigned int, ((device->attrs.max_mr / 2) * RDS_MR_8K_SCALE),
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800157 rds_ib_mr_8k_pool_size) : rds_ib_mr_8k_pool_size;
Andy Groverec162272009-02-24 15:30:30 +0000158
Or Gerlitz03532612015-12-18 10:59:47 +0200159 rds_ibdev->max_initiator_depth = device->attrs.max_qp_init_rd_atom;
160 rds_ibdev->max_responder_resources = device->attrs.max_qp_rd_atom;
Andy Grover40589e72010-01-12 10:50:48 -0800161
Andy Groverec162272009-02-24 15:30:30 +0000162 rds_ibdev->dev = device;
Christoph Hellwiged082d32016-09-05 12:56:17 +0200163 rds_ibdev->pd = ib_alloc_pd(device, 0);
Zach Brown3e0249f2010-05-18 15:48:51 -0700164 if (IS_ERR(rds_ibdev->pd)) {
165 rds_ibdev->pd = NULL;
166 goto put_dev;
167 }
Andy Groverec162272009-02-24 15:30:30 +0000168
Santosh Shilimkar06766512015-09-10 21:20:57 -0700169 rds_ibdev->mr_1m_pool =
170 rds_ib_create_mr_pool(rds_ibdev, RDS_IB_MR_1M_POOL);
171 if (IS_ERR(rds_ibdev->mr_1m_pool)) {
172 rds_ibdev->mr_1m_pool = NULL;
Zach Brown3e0249f2010-05-18 15:48:51 -0700173 goto put_dev;
Andy Groverec162272009-02-24 15:30:30 +0000174 }
175
Santosh Shilimkar06766512015-09-10 21:20:57 -0700176 rds_ibdev->mr_8k_pool =
177 rds_ib_create_mr_pool(rds_ibdev, RDS_IB_MR_8K_POOL);
178 if (IS_ERR(rds_ibdev->mr_8k_pool)) {
179 rds_ibdev->mr_8k_pool = NULL;
180 goto put_dev;
181 }
182
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800183 rdsdebug("RDS/IB: max_mr = %d, max_wrs = %d, max_sge = %d, fmr_max_remaps = %d, max_1m_mrs = %d, max_8k_mrs = %d\n",
Or Gerlitz03532612015-12-18 10:59:47 +0200184 device->attrs.max_fmr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800185 rds_ibdev->fmr_max_remaps, rds_ibdev->max_1m_mrs,
186 rds_ibdev->max_8k_mrs);
Santosh Shilimkar06766512015-09-10 21:20:57 -0700187
santosh.shilimkar@oracle.com2cb29122016-03-01 15:20:52 -0800188 pr_info("RDS/IB: %s: %s supported and preferred\n",
189 device->name,
190 rds_ibdev->use_fastreg ? "FRMR" : "FMR");
191
Andy Groverec162272009-02-24 15:30:30 +0000192 INIT_LIST_HEAD(&rds_ibdev->ipaddr_list);
193 INIT_LIST_HEAD(&rds_ibdev->conn_list);
Zach Brownea819862010-07-15 12:34:33 -0700194
195 down_write(&rds_ib_devices_lock);
196 list_add_tail_rcu(&rds_ibdev->list, &rds_ib_devices);
197 up_write(&rds_ib_devices_lock);
Zach Brown3e0249f2010-05-18 15:48:51 -0700198 atomic_inc(&rds_ibdev->refcount);
Andy Groverec162272009-02-24 15:30:30 +0000199
200 ib_set_client_data(device, &rds_ib_client, rds_ibdev);
Zach Brown3e0249f2010-05-18 15:48:51 -0700201 atomic_inc(&rds_ibdev->refcount);
Andy Groverec162272009-02-24 15:30:30 +0000202
Zach Brownfc19de32010-05-24 13:16:57 -0700203 rds_ib_nodev_connect();
204
Zach Brown3e0249f2010-05-18 15:48:51 -0700205put_dev:
206 rds_ib_dev_put(rds_ibdev);
Andy Groverec162272009-02-24 15:30:30 +0000207}
208
Zach Brown3e0249f2010-05-18 15:48:51 -0700209/*
210 * New connections use this to find the device to associate with the
211 * connection. It's not in the fast path so we're not concerned about the
212 * performance of the IB call. (As of this writing, it uses an interrupt
213 * blocking spinlock to serialize walking a per-device list of all registered
214 * clients.)
215 *
216 * RCU is used to handle incoming connections racing with device teardown.
217 * Rather than use a lock to serialize removal from the client_data and
218 * getting a new reference, we use an RCU grace period. The destruction
219 * path removes the device from client_data and then waits for all RCU
220 * readers to finish.
221 *
222 * A new connection can get NULL from this if its arriving on a
223 * device that is in the process of being removed.
224 */
225struct rds_ib_device *rds_ib_get_client_data(struct ib_device *device)
226{
227 struct rds_ib_device *rds_ibdev;
228
229 rcu_read_lock();
230 rds_ibdev = ib_get_client_data(device, &rds_ib_client);
231 if (rds_ibdev)
232 atomic_inc(&rds_ibdev->refcount);
233 rcu_read_unlock();
234 return rds_ibdev;
235}
236
237/*
238 * The IB stack is letting us know that a device is going away. This can
239 * happen if the underlying HCA driver is removed or if PCI hotplug is removing
240 * the pci function, for example.
241 *
242 * This can be called at any time and can be racing with any other RDS path.
243 */
Haggai Eran7c1eb452015-07-30 17:50:14 +0300244static void rds_ib_remove_one(struct ib_device *device, void *client_data)
Andy Groverec162272009-02-24 15:30:30 +0000245{
Haggai Eran7c1eb452015-07-30 17:50:14 +0300246 struct rds_ib_device *rds_ibdev = client_data;
Andy Groverec162272009-02-24 15:30:30 +0000247
Andy Groverec162272009-02-24 15:30:30 +0000248 if (!rds_ibdev)
249 return;
250
Zach Brownfc19de32010-05-24 13:16:57 -0700251 rds_ib_dev_shutdown(rds_ibdev);
Andy Groverec162272009-02-24 15:30:30 +0000252
Zach Brownea819862010-07-15 12:34:33 -0700253 /* stop connection attempts from getting a reference to this device. */
Zach Brown3e0249f2010-05-18 15:48:51 -0700254 ib_set_client_data(device, &rds_ib_client, NULL);
Zach Brownea819862010-07-15 12:34:33 -0700255
256 down_write(&rds_ib_devices_lock);
257 list_del_rcu(&rds_ibdev->list);
258 up_write(&rds_ib_devices_lock);
259
260 /*
261 * This synchronize rcu is waiting for readers of both the ib
262 * client data and the devices list to finish before we drop
263 * both of those references.
264 */
Zach Brown3e0249f2010-05-18 15:48:51 -0700265 synchronize_rcu();
266 rds_ib_dev_put(rds_ibdev);
Zach Brown3e0249f2010-05-18 15:48:51 -0700267 rds_ib_dev_put(rds_ibdev);
Andy Groverec162272009-02-24 15:30:30 +0000268}
269
270struct ib_client rds_ib_client = {
271 .name = "rds_ib",
272 .add = rds_ib_add_one,
273 .remove = rds_ib_remove_one
274};
275
276static int rds_ib_conn_info_visitor(struct rds_connection *conn,
277 void *buffer)
278{
279 struct rds_info_rdma_connection *iinfo = buffer;
280 struct rds_ib_connection *ic;
281
282 /* We will only ever look at IB transports */
283 if (conn->c_trans != &rds_ib_transport)
284 return 0;
285
286 iinfo->src_addr = conn->c_laddr;
287 iinfo->dst_addr = conn->c_faddr;
288
289 memset(&iinfo->src_gid, 0, sizeof(iinfo->src_gid));
290 memset(&iinfo->dst_gid, 0, sizeof(iinfo->dst_gid));
291 if (rds_conn_state(conn) == RDS_CONN_UP) {
292 struct rds_ib_device *rds_ibdev;
293 struct rdma_dev_addr *dev_addr;
294
295 ic = conn->c_transport_data;
296 dev_addr = &ic->i_cm_id->route.addr.dev_addr;
297
Sean Hefty6f8372b2009-11-19 13:26:06 -0800298 rdma_addr_get_sgid(dev_addr, (union ib_gid *) &iinfo->src_gid);
299 rdma_addr_get_dgid(dev_addr, (union ib_gid *) &iinfo->dst_gid);
Andy Groverec162272009-02-24 15:30:30 +0000300
Zach Brown3e0249f2010-05-18 15:48:51 -0700301 rds_ibdev = ic->rds_ibdev;
Andy Groverec162272009-02-24 15:30:30 +0000302 iinfo->max_send_wr = ic->i_send_ring.w_nr;
303 iinfo->max_recv_wr = ic->i_recv_ring.w_nr;
304 iinfo->max_send_sge = rds_ibdev->max_sge;
305 rds_ib_get_mr_info(rds_ibdev, iinfo);
306 }
307 return 1;
308}
309
310static void rds_ib_ic_info(struct socket *sock, unsigned int len,
311 struct rds_info_iterator *iter,
312 struct rds_info_lengths *lens)
313{
314 rds_for_each_conn_info(sock, len, iter, lens,
315 rds_ib_conn_info_visitor,
316 sizeof(struct rds_info_rdma_connection));
317}
318
319
320/*
321 * Early RDS/IB was built to only bind to an address if there is an IPoIB
322 * device with that address set.
323 *
324 * If it were me, I'd advocate for something more flexible. Sending and
325 * receiving should be device-agnostic. Transports would try and maintain
326 * connections between peers who have messages queued. Userspace would be
327 * allowed to influence which paths have priority. We could call userspace
328 * asserting this policy "routing".
329 */
Sowmini Varadhand5a8ac22015-08-05 01:43:25 -0400330static int rds_ib_laddr_check(struct net *net, __be32 addr)
Andy Groverec162272009-02-24 15:30:30 +0000331{
332 int ret;
333 struct rdma_cm_id *cm_id;
334 struct sockaddr_in sin;
335
336 /* Create a CMA ID and try to bind it. This catches both
337 * IB and iWARP capable NICs.
338 */
Guanglei Lia0138dc2018-02-06 10:43:21 +0800339 cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler,
340 NULL, RDMA_PS_TCP, IB_QPT_RC);
Dan Carpenter94713ba2009-04-09 14:09:46 +0000341 if (IS_ERR(cm_id))
342 return PTR_ERR(cm_id);
Andy Groverec162272009-02-24 15:30:30 +0000343
344 memset(&sin, 0, sizeof(sin));
345 sin.sin_family = AF_INET;
346 sin.sin_addr.s_addr = addr;
347
348 /* rdma_bind_addr will only succeed for IB & iWARP devices */
349 ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin);
350 /* due to this, we will claim to support iWARP devices unless we
351 check node_type. */
Sasha Levinc2349752013-12-18 23:49:42 -0500352 if (ret || !cm_id->device ||
353 cm_id->device->node_type != RDMA_NODE_IB_CA)
Andy Groverec162272009-02-24 15:30:30 +0000354 ret = -EADDRNOTAVAIL;
355
356 rdsdebug("addr %pI4 ret %d node type %d\n",
357 &addr, ret,
358 cm_id->device ? cm_id->device->node_type : -1);
359
360 rdma_destroy_id(cm_id);
361
362 return ret;
363}
364
Zach Brown24fa1632010-06-25 14:59:49 -0700365static void rds_ib_unregister_client(void)
366{
367 ib_unregister_client(&rds_ib_client);
368 /* wait for rds_ib_dev_free() to complete */
369 flush_workqueue(rds_wq);
370}
371
Andy Groverec162272009-02-24 15:30:30 +0000372void rds_ib_exit(void)
373{
374 rds_info_deregister_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
Zach Brown24fa1632010-06-25 14:59:49 -0700375 rds_ib_unregister_client();
Zach Brown8aeb1ba2010-06-25 14:58:16 -0700376 rds_ib_destroy_nodev_conns();
Andy Groverec162272009-02-24 15:30:30 +0000377 rds_ib_sysctl_exit();
378 rds_ib_recv_exit();
379 rds_trans_unregister(&rds_ib_transport);
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800380 rds_ib_mr_exit();
Andy Groverec162272009-02-24 15:30:30 +0000381}
382
383struct rds_transport rds_ib_transport = {
384 .laddr_check = rds_ib_laddr_check,
Sowmini Varadhan226f7a72016-06-30 16:11:10 -0700385 .xmit_path_complete = rds_ib_xmit_path_complete,
Andy Groverec162272009-02-24 15:30:30 +0000386 .xmit = rds_ib_xmit,
Andy Groverec162272009-02-24 15:30:30 +0000387 .xmit_rdma = rds_ib_xmit_rdma,
Andy Grover15133f62010-01-12 14:33:38 -0800388 .xmit_atomic = rds_ib_xmit_atomic,
Sowmini Varadhan2da43c42016-06-30 16:11:15 -0700389 .recv_path = rds_ib_recv_path,
Andy Groverec162272009-02-24 15:30:30 +0000390 .conn_alloc = rds_ib_conn_alloc,
391 .conn_free = rds_ib_conn_free,
Sowmini Varadhanb04e8552016-06-30 16:11:16 -0700392 .conn_path_connect = rds_ib_conn_path_connect,
Sowmini Varadhan226f7a72016-06-30 16:11:10 -0700393 .conn_path_shutdown = rds_ib_conn_path_shutdown,
Andy Groverec162272009-02-24 15:30:30 +0000394 .inc_copy_to_user = rds_ib_inc_copy_to_user,
Andy Groverec162272009-02-24 15:30:30 +0000395 .inc_free = rds_ib_inc_free,
396 .cm_initiate_connect = rds_ib_cm_initiate_connect,
397 .cm_handle_connect = rds_ib_cm_handle_connect,
398 .cm_connect_complete = rds_ib_cm_connect_complete,
399 .stats_info_copy = rds_ib_stats_info_copy,
400 .exit = rds_ib_exit,
401 .get_mr = rds_ib_get_mr,
402 .sync_mr = rds_ib_sync_mr,
403 .free_mr = rds_ib_free_mr,
404 .flush_mrs = rds_ib_flush_mrs,
405 .t_owner = THIS_MODULE,
406 .t_name = "infiniband",
Andy Grover335776b2009-08-21 12:28:34 +0000407 .t_type = RDS_TRANS_IB
Andy Groverec162272009-02-24 15:30:30 +0000408};
409
Zach Brownef87b7e2010-07-09 12:26:20 -0700410int rds_ib_init(void)
Andy Groverec162272009-02-24 15:30:30 +0000411{
412 int ret;
413
414 INIT_LIST_HEAD(&rds_ib_devices);
415
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800416 ret = rds_ib_mr_init();
Zach Brown515e0792010-07-06 15:09:56 -0700417 if (ret)
Tejun Heoc534a102011-02-01 11:42:43 +0100418 goto out;
Zach Brown515e0792010-07-06 15:09:56 -0700419
santosh.shilimkar@oracle.comad1d7dc2015-08-25 12:02:01 -0700420 ret = ib_register_client(&rds_ib_client);
421 if (ret)
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800422 goto out_mr_exit;
santosh.shilimkar@oracle.comad1d7dc2015-08-25 12:02:01 -0700423
Andy Groverec162272009-02-24 15:30:30 +0000424 ret = rds_ib_sysctl_init();
425 if (ret)
426 goto out_ibreg;
427
428 ret = rds_ib_recv_init();
429 if (ret)
430 goto out_sysctl;
431
432 ret = rds_trans_register(&rds_ib_transport);
433 if (ret)
434 goto out_recv;
435
436 rds_info_register_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
437
438 goto out;
439
440out_recv:
441 rds_ib_recv_exit();
442out_sysctl:
443 rds_ib_sysctl_exit();
444out_ibreg:
Zach Brown24fa1632010-06-25 14:59:49 -0700445 rds_ib_unregister_client();
santosh.shilimkar@oracle.comf6df6832016-03-01 15:20:46 -0800446out_mr_exit:
447 rds_ib_mr_exit();
Andy Groverec162272009-02-24 15:30:30 +0000448out:
449 return ret;
450}
451
452MODULE_LICENSE("GPL");
453