[net-next-2.6.git] / net / rds / ib.c

/*
 * Copyright (c) 2006 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
#include <linux/kernel.h>
#include <linux/in.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/if_arp.h>
#include <linux/delay.h>
#include <linux/slab.h>

#include "rds.h"
#include "ib.h"

unsigned int fmr_pool_size = RDS_FMR_POOL_SIZE;
unsigned int fmr_message_size = RDS_FMR_SIZE + 1; /* +1 allows for unaligned MRs */
unsigned int rds_ib_retry_count = RDS_IB_DEFAULT_RETRY_COUNT;

module_param(fmr_pool_size, int, 0444);
MODULE_PARM_DESC(fmr_pool_size, " Max number of fmr per HCA");
module_param(fmr_message_size, int, 0444);
MODULE_PARM_DESC(fmr_message_size, " Max size of a RDMA transfer");
module_param(rds_ib_retry_count, int, 0444);
MODULE_PARM_DESC(rds_ib_retry_count, " Number of hw retries before reporting an error");

struct list_head rds_ib_devices;

/* NOTE: if also grabbing ibdev lock, grab this first */
DEFINE_SPINLOCK(ib_nodev_conns_lock);
LIST_HEAD(ib_nodev_conns);

void rds_ib_add_one(struct ib_device *device)
{
	struct rds_ib_device *rds_ibdev;
	struct ib_device_attr *dev_attr;

	/* Only handle IB (no iWARP) devices */
	if (device->node_type != RDMA_NODE_IB_CA)
		return;

	dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL);
	if (!dev_attr)
		return;

	if (ib_query_device(device, dev_attr)) {
		rdsdebug("Query device failed for %s\n", device->name);
		goto free_attr;
	}

	rds_ibdev = kmalloc_node(sizeof *rds_ibdev, GFP_KERNEL, ibdev_to_node(device));
	if (!rds_ibdev)
		goto free_attr;

	spin_lock_init(&rds_ibdev->spinlock);

	rds_ibdev->max_wrs = dev_attr->max_qp_wr;
	rds_ibdev->max_sge = min(dev_attr->max_sge, RDS_IB_MAX_SGE);

	rds_ibdev->fmr_max_remaps = dev_attr->max_map_per_fmr?: 32;
	rds_ibdev->max_fmrs = dev_attr->max_fmr ?
			min_t(unsigned int, dev_attr->max_fmr, fmr_pool_size) :
			fmr_pool_size;

	rds_ibdev->max_initiator_depth = dev_attr->max_qp_init_rd_atom;
	rds_ibdev->max_responder_resources = dev_attr->max_qp_rd_atom;

	rds_ibdev->dev = device;
	rds_ibdev->pd = ib_alloc_pd(device);
	if (IS_ERR(rds_ibdev->pd))
		goto free_dev;

	rds_ibdev->mr = ib_get_dma_mr(rds_ibdev->pd,
				      IB_ACCESS_LOCAL_WRITE);
	if (IS_ERR(rds_ibdev->mr))
		goto err_pd;

	rds_ibdev->mr_pool = rds_ib_create_mr_pool(rds_ibdev);
	if (IS_ERR(rds_ibdev->mr_pool)) {
		rds_ibdev->mr_pool = NULL;
		goto err_mr;
	}

	INIT_LIST_HEAD(&rds_ibdev->ipaddr_list);
	INIT_LIST_HEAD(&rds_ibdev->conn_list);
	list_add_tail(&rds_ibdev->list, &rds_ib_devices);

	ib_set_client_data(device, &rds_ib_client, rds_ibdev);

	goto free_attr;

err_mr:
	ib_dereg_mr(rds_ibdev->mr);
err_pd:
	ib_dealloc_pd(rds_ibdev->pd);
free_dev:
	kfree(rds_ibdev);
free_attr:
	kfree(dev_attr);
}

void rds_ib_remove_one(struct ib_device *device)
{
	struct rds_ib_device *rds_ibdev;
	struct rds_ib_ipaddr *i_ipaddr, *i_next;

	rds_ibdev = ib_get_client_data(device, &rds_ib_client);
	if (!rds_ibdev)
		return;

	synchronize_rcu();
	list_for_each_entry_safe(i_ipaddr, i_next, &rds_ibdev->ipaddr_list, list) {
		list_del(&i_ipaddr->list);
		kfree(i_ipaddr);
	}

	rds_ib_destroy_conns(rds_ibdev);

	if (rds_ibdev->mr_pool)
		rds_ib_destroy_mr_pool(rds_ibdev->mr_pool);

	ib_dereg_mr(rds_ibdev->mr);

	while (ib_dealloc_pd(rds_ibdev->pd)) {
		rdsdebug("Failed to dealloc pd %p\n", rds_ibdev->pd);
		msleep(1);
	}

	list_del(&rds_ibdev->list);
	kfree(rds_ibdev);
}

struct ib_client rds_ib_client = {
	.name   = "rds_ib",
	.add    = rds_ib_add_one,
	.remove = rds_ib_remove_one
};

static int rds_ib_conn_info_visitor(struct rds_connection *conn,
				    void *buffer)
{
	struct rds_info_rdma_connection *iinfo = buffer;
	struct rds_ib_connection *ic;

	/* We will only ever look at IB transports */
	if (conn->c_trans != &rds_ib_transport)
		return 0;

	iinfo->src_addr = conn->c_laddr;
	iinfo->dst_addr = conn->c_faddr;

	memset(&iinfo->src_gid, 0, sizeof(iinfo->src_gid));
	memset(&iinfo->dst_gid, 0, sizeof(iinfo->dst_gid));
	if (rds_conn_state(conn) == RDS_CONN_UP) {
		struct rds_ib_device *rds_ibdev;
		struct rdma_dev_addr *dev_addr;

		ic = conn->c_transport_data;
		dev_addr = &ic->i_cm_id->route.addr.dev_addr;

		rdma_addr_get_sgid(dev_addr, (union ib_gid *) &iinfo->src_gid);
		rdma_addr_get_dgid(dev_addr, (union ib_gid *) &iinfo->dst_gid);

		rds_ibdev = ib_get_client_data(ic->i_cm_id->device, &rds_ib_client);
		iinfo->max_send_wr = ic->i_send_ring.w_nr;
		iinfo->max_recv_wr = ic->i_recv_ring.w_nr;
		iinfo->max_send_sge = rds_ibdev->max_sge;
		rds_ib_get_mr_info(rds_ibdev, iinfo);
	}
	return 1;
}

static void rds_ib_ic_info(struct socket *sock, unsigned int len,
			   struct rds_info_iterator *iter,
			   struct rds_info_lengths *lens)
{
	rds_for_each_conn_info(sock, len, iter, lens,
				rds_ib_conn_info_visitor,
				sizeof(struct rds_info_rdma_connection));
}


/*
 * Early RDS/IB was built to only bind to an address if there is an IPoIB
 * device with that address set.
 *
 * If it were me, I'd advocate for something more flexible.  Sending and
 * receiving should be device-agnostic.  Transports would try and maintain
 * connections between peers who have messages queued.  Userspace would be
 * allowed to influence which paths have priority.  We could call userspace
 * asserting this policy "routing".
 */
static int rds_ib_laddr_check(__be32 addr)
{
	int ret;
	struct rdma_cm_id *cm_id;
	struct sockaddr_in sin;

	/* Create a CMA ID and try to bind it. This catches both
	 * IB and iWARP capable NICs.
	 */
	cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP);
	if (IS_ERR(cm_id))
		return PTR_ERR(cm_id);

	memset(&sin, 0, sizeof(sin));
	sin.sin_family = AF_INET;
	sin.sin_addr.s_addr = addr;

	/* rdma_bind_addr will only succeed for IB & iWARP devices */
	ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin);
	/* due to this, we will claim to support iWARP devices unless we
	   check node_type. */
	if (ret || cm_id->device->node_type != RDMA_NODE_IB_CA)
		ret = -EADDRNOTAVAIL;

	rdsdebug("addr %pI4 ret %d node type %d\n",
		&addr, ret,
		cm_id->device ? cm_id->device->node_type : -1);

	rdma_destroy_id(cm_id);

	return ret;
}

void rds_ib_exit(void)
{
	rds_info_deregister_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
	rds_ib_destroy_nodev_conns();
	ib_unregister_client(&rds_ib_client);
	rds_ib_sysctl_exit();
	rds_ib_recv_exit();
	rds_trans_unregister(&rds_ib_transport);
}

struct rds_transport rds_ib_transport = {
	.laddr_check		= rds_ib_laddr_check,
	.xmit_complete		= rds_ib_xmit_complete,
	.xmit			= rds_ib_xmit,
	.xmit_rdma		= rds_ib_xmit_rdma,
	.xmit_atomic		= rds_ib_xmit_atomic,
	.recv			= rds_ib_recv,
	.conn_alloc		= rds_ib_conn_alloc,
	.conn_free		= rds_ib_conn_free,
	.conn_connect		= rds_ib_conn_connect,
	.conn_shutdown		= rds_ib_conn_shutdown,
	.inc_copy_to_user	= rds_ib_inc_copy_to_user,
	.inc_free		= rds_ib_inc_free,
	.cm_initiate_connect	= rds_ib_cm_initiate_connect,
	.cm_handle_connect	= rds_ib_cm_handle_connect,
	.cm_connect_complete	= rds_ib_cm_connect_complete,
	.stats_info_copy	= rds_ib_stats_info_copy,
	.exit			= rds_ib_exit,
	.get_mr			= rds_ib_get_mr,
	.sync_mr		= rds_ib_sync_mr,
	.free_mr		= rds_ib_free_mr,
	.flush_mrs		= rds_ib_flush_mrs,
	.t_owner		= THIS_MODULE,
	.t_name			= "infiniband",
	.t_type			= RDS_TRANS_IB
};

int __init rds_ib_init(void)
{
	int ret;

	INIT_LIST_HEAD(&rds_ib_devices);

	ret = ib_register_client(&rds_ib_client);
	if (ret)
		goto out;

	ret = rds_ib_sysctl_init();
	if (ret)
		goto out_ibreg;

	ret = rds_ib_recv_init();
	if (ret)
		goto out_sysctl;

	ret = rds_trans_register(&rds_ib_transport);
	if (ret)
		goto out_recv;

	rds_info_register_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);

	goto out;

out_recv:
	rds_ib_recv_exit();
out_sysctl:
	rds_ib_sysctl_exit();
out_ibreg:
	ib_unregister_client(&rds_ib_client);
out:
	return ret;
}

MODULE_LICENSE("GPL");
Commit	Line	Data
ec16227e AG	1	/*
	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>
5a0e3ad6	40	#include <linux/slab.h>
ec16227e AG	41
	42	#include "rds.h"
	43	#include "ib.h"
	44
	45	unsigned int fmr_pool_size = RDS_FMR_POOL_SIZE;
	46	unsigned int fmr_message_size = RDS_FMR_SIZE + 1; /* +1 allows for unaligned MRs */
3ba23ade	47	unsigned int rds_ib_retry_count = RDS_IB_DEFAULT_RETRY_COUNT;
ec16227e AG	48
	49	module_param(fmr_pool_size, int, 0444);
	50	MODULE_PARM_DESC(fmr_pool_size, " Max number of fmr per HCA");
	51	module_param(fmr_message_size, int, 0444);
	52	MODULE_PARM_DESC(fmr_message_size, " Max size of a RDMA transfer");
3ba23ade AG	53	module_param(rds_ib_retry_count, int, 0444);
3ba23ade AG	54	MODULE_PARM_DESC(rds_ib_retry_count, " Number of hw retries before reporting an error");
ec16227e AG	55
	56	struct list_head rds_ib_devices;
	57
745cbcca	58	/* NOTE: if also grabbing ibdev lock, grab this first */
ec16227e AG	59	DEFINE_SPINLOCK(ib_nodev_conns_lock);
	60	LIST_HEAD(ib_nodev_conns);
	61
	62	void rds_ib_add_one(struct ib_device *device)
	63	{
	64	struct rds_ib_device *rds_ibdev;
	65	struct ib_device_attr *dev_attr;
	66
	67	/* Only handle IB (no iWARP) devices */
	68	if (device->node_type != RDMA_NODE_IB_CA)
	69	return;
	70
	71	dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL);
	72	if (!dev_attr)
	73	return;
	74
	75	if (ib_query_device(device, dev_attr)) {
	76	rdsdebug("Query device failed for %s\n", device->name);
	77	goto free_attr;
	78	}
	79
e4c52c98	80	rds_ibdev = kmalloc_node(sizeof *rds_ibdev, GFP_KERNEL, ibdev_to_node(device));
ec16227e AG	81	if (!rds_ibdev)
	82	goto free_attr;
	83
	84	spin_lock_init(&rds_ibdev->spinlock);
	85
	86	rds_ibdev->max_wrs = dev_attr->max_qp_wr;
	87	rds_ibdev->max_sge = min(dev_attr->max_sge, RDS_IB_MAX_SGE);
	88
ec16227e AG	89	rds_ibdev->fmr_max_remaps = dev_attr->max_map_per_fmr?: 32;
	90	rds_ibdev->max_fmrs = dev_attr->max_fmr ?
	91	min_t(unsigned int, dev_attr->max_fmr, fmr_pool_size) :
	92	fmr_pool_size;
	93
40589e74 AG	94	rds_ibdev->max_initiator_depth = dev_attr->max_qp_init_rd_atom;
	95	rds_ibdev->max_responder_resources = dev_attr->max_qp_rd_atom;
	96
ec16227e AG	97	rds_ibdev->dev = device;
	98	rds_ibdev->pd = ib_alloc_pd(device);
	99	if (IS_ERR(rds_ibdev->pd))
	100	goto free_dev;
	101
	102	rds_ibdev->mr = ib_get_dma_mr(rds_ibdev->pd,
	103	IB_ACCESS_LOCAL_WRITE);
	104	if (IS_ERR(rds_ibdev->mr))
	105	goto err_pd;
	106
	107	rds_ibdev->mr_pool = rds_ib_create_mr_pool(rds_ibdev);
	108	if (IS_ERR(rds_ibdev->mr_pool)) {
	109	rds_ibdev->mr_pool = NULL;
	110	goto err_mr;
	111	}
	112
	113	INIT_LIST_HEAD(&rds_ibdev->ipaddr_list);
	114	INIT_LIST_HEAD(&rds_ibdev->conn_list);
	115	list_add_tail(&rds_ibdev->list, &rds_ib_devices);
	116
	117	ib_set_client_data(device, &rds_ib_client, rds_ibdev);
	118
	119	goto free_attr;
	120
	121	err_mr:
	122	ib_dereg_mr(rds_ibdev->mr);
	123	err_pd:
	124	ib_dealloc_pd(rds_ibdev->pd);
	125	free_dev:
	126	kfree(rds_ibdev);
	127	free_attr:
	128	kfree(dev_attr);
	129	}
	130
	131	void rds_ib_remove_one(struct ib_device *device)
	132	{
	133	struct rds_ib_device *rds_ibdev;
	134	struct rds_ib_ipaddr i_ipaddr, i_next;
	135
	136	rds_ibdev = ib_get_client_data(device, &rds_ib_client);
	137	if (!rds_ibdev)
	138	return;
	139
764f2dd9	140	synchronize_rcu();
ec16227e AG	141	list_for_each_entry_safe(i_ipaddr, i_next, &rds_ibdev->ipaddr_list, list) {
	142	list_del(&i_ipaddr->list);
	143	kfree(i_ipaddr);
	144	}
	145
745cbcca	146	rds_ib_destroy_conns(rds_ibdev);
ec16227e AG	147
	148	if (rds_ibdev->mr_pool)
	149	rds_ib_destroy_mr_pool(rds_ibdev->mr_pool);
	150
	151	ib_dereg_mr(rds_ibdev->mr);
	152
	153	while (ib_dealloc_pd(rds_ibdev->pd)) {
	154	rdsdebug("Failed to dealloc pd %p\n", rds_ibdev->pd);
	155	msleep(1);
	156	}
	157
	158	list_del(&rds_ibdev->list);
	159	kfree(rds_ibdev);
	160	}
	161
	162	struct ib_client rds_ib_client = {
	163	.name = "rds_ib",
	164	.add = rds_ib_add_one,
	165	.remove = rds_ib_remove_one
	166	};
	167
	168	static int rds_ib_conn_info_visitor(struct rds_connection *conn,
	169	void *buffer)
	170	{
	171	struct rds_info_rdma_connection *iinfo = buffer;
	172	struct rds_ib_connection *ic;
	173
	174	/* We will only ever look at IB transports */
	175	if (conn->c_trans != &rds_ib_transport)
	176	return 0;
	177
	178	iinfo->src_addr = conn->c_laddr;
	179	iinfo->dst_addr = conn->c_faddr;
	180
	181	memset(&iinfo->src_gid, 0, sizeof(iinfo->src_gid));
	182	memset(&iinfo->dst_gid, 0, sizeof(iinfo->dst_gid));
	183	if (rds_conn_state(conn) == RDS_CONN_UP) {
	184	struct rds_ib_device *rds_ibdev;
	185	struct rdma_dev_addr *dev_addr;
	186
	187	ic = conn->c_transport_data;
	188	dev_addr = &ic->i_cm_id->route.addr.dev_addr;
	189
6f8372b6 SH	190	rdma_addr_get_sgid(dev_addr, (union ib_gid *) &iinfo->src_gid);
6f8372b6 SH	191	rdma_addr_get_dgid(dev_addr, (union ib_gid *) &iinfo->dst_gid);
ec16227e AG	192
	193	rds_ibdev = ib_get_client_data(ic->i_cm_id->device, &rds_ib_client);
	194	iinfo->max_send_wr = ic->i_send_ring.w_nr;
	195	iinfo->max_recv_wr = ic->i_recv_ring.w_nr;
	196	iinfo->max_send_sge = rds_ibdev->max_sge;
	197	rds_ib_get_mr_info(rds_ibdev, iinfo);
	198	}
	199	return 1;
	200	}
	201
	202	static void rds_ib_ic_info(struct socket *sock, unsigned int len,
	203	struct rds_info_iterator *iter,
	204	struct rds_info_lengths *lens)
	205	{
	206	rds_for_each_conn_info(sock, len, iter, lens,
	207	rds_ib_conn_info_visitor,
	208	sizeof(struct rds_info_rdma_connection));
	209	}
	210
	211
	212	/*
	213	* Early RDS/IB was built to only bind to an address if there is an IPoIB
	214	* device with that address set.
	215	*
	216	* If it were me, I'd advocate for something more flexible. Sending and
	217	* receiving should be device-agnostic. Transports would try and maintain
	218	* connections between peers who have messages queued. Userspace would be
	219	* allowed to influence which paths have priority. We could call userspace
	220	* asserting this policy "routing".
	221	*/
	222	static int rds_ib_laddr_check(__be32 addr)
	223	{
	224	int ret;
	225	struct rdma_cm_id *cm_id;
	226	struct sockaddr_in sin;
	227
	228	/* Create a CMA ID and try to bind it. This catches both
	229	* IB and iWARP capable NICs.
	230	*/
	231	cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP);
94713bab DC	232	if (IS_ERR(cm_id))
94713bab DC	233	return PTR_ERR(cm_id);
ec16227e AG	234
	235	memset(&sin, 0, sizeof(sin));
	236	sin.sin_family = AF_INET;
	237	sin.sin_addr.s_addr = addr;
	238
	239	/* rdma_bind_addr will only succeed for IB & iWARP devices */
	240	ret = rdma_bind_addr(cm_id, (struct sockaddr *)&sin);
	241	/* due to this, we will claim to support iWARP devices unless we
	242	check node_type. */
	243	if (ret \|\| cm_id->device->node_type != RDMA_NODE_IB_CA)
	244	ret = -EADDRNOTAVAIL;
	245
	246	rdsdebug("addr %pI4 ret %d node type %d\n",
	247	&addr, ret,
	248	cm_id->device ? cm_id->device->node_type : -1);
	249
	250	rdma_destroy_id(cm_id);
	251
	252	return ret;
	253	}
	254
	255	void rds_ib_exit(void)
	256	{
	257	rds_info_deregister_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
745cbcca	258	rds_ib_destroy_nodev_conns();
ec16227e AG	259	ib_unregister_client(&rds_ib_client);
	260	rds_ib_sysctl_exit();
	261	rds_ib_recv_exit();
	262	rds_trans_unregister(&rds_ib_transport);
	263	}
	264
	265	struct rds_transport rds_ib_transport = {
	266	.laddr_check = rds_ib_laddr_check,
	267	.xmit_complete = rds_ib_xmit_complete,
	268	.xmit = rds_ib_xmit,
ec16227e	269	.xmit_rdma = rds_ib_xmit_rdma,
15133f6e	270	.xmit_atomic = rds_ib_xmit_atomic,
ec16227e AG	271	.recv = rds_ib_recv,
	272	.conn_alloc = rds_ib_conn_alloc,
	273	.conn_free = rds_ib_conn_free,
	274	.conn_connect = rds_ib_conn_connect,
	275	.conn_shutdown = rds_ib_conn_shutdown,
	276	.inc_copy_to_user = rds_ib_inc_copy_to_user,
ec16227e AG	277	.inc_free = rds_ib_inc_free,
	278	.cm_initiate_connect = rds_ib_cm_initiate_connect,
	279	.cm_handle_connect = rds_ib_cm_handle_connect,
	280	.cm_connect_complete = rds_ib_cm_connect_complete,
	281	.stats_info_copy = rds_ib_stats_info_copy,
	282	.exit = rds_ib_exit,
	283	.get_mr = rds_ib_get_mr,
	284	.sync_mr = rds_ib_sync_mr,
	285	.free_mr = rds_ib_free_mr,
	286	.flush_mrs = rds_ib_flush_mrs,
	287	.t_owner = THIS_MODULE,
	288	.t_name = "infiniband",
335776bd	289	.t_type = RDS_TRANS_IB
ec16227e AG	290	};
	291
	292	int __init rds_ib_init(void)
	293	{
	294	int ret;
	295
	296	INIT_LIST_HEAD(&rds_ib_devices);
	297
	298	ret = ib_register_client(&rds_ib_client);
	299	if (ret)
	300	goto out;
	301
	302	ret = rds_ib_sysctl_init();
	303	if (ret)
	304	goto out_ibreg;
	305
	306	ret = rds_ib_recv_init();
	307	if (ret)
	308	goto out_sysctl;
	309
	310	ret = rds_trans_register(&rds_ib_transport);
	311	if (ret)
	312	goto out_recv;
	313
	314	rds_info_register_func(RDS_INFO_IB_CONNECTIONS, rds_ib_ic_info);
	315
	316	goto out;
	317
	318	out_recv:
	319	rds_ib_recv_exit();
	320	out_sysctl:
	321	rds_ib_sysctl_exit();
	322	out_ibreg:
	323	ib_unregister_client(&rds_ib_client);
	324	out:
	325	return ret;
	326	}
	327
	328	MODULE_LICENSE("GPL");
	329