11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Communications. All rights reserved. 32a1d9b7fSRoland Dreier * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * This software is available to you under a choice of one of two 61da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU 71da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file 81da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the 91da177e4SLinus Torvalds * OpenIB.org BSD license below: 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or 121da177e4SLinus Torvalds * without modification, are permitted provided that the following 131da177e4SLinus Torvalds * conditions are met: 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * - Redistributions of source code must retain the above 161da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 171da177e4SLinus Torvalds * disclaimer. 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above 201da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 211da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials 221da177e4SLinus Torvalds * provided with the distribution. 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 251da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 261da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 271da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 281da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 291da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 301da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 311da177e4SLinus Torvalds * SOFTWARE. 321da177e4SLinus Torvalds */ 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds #include <linux/module.h> 351da177e4SLinus Torvalds #include <linux/string.h> 361da177e4SLinus Torvalds #include <linux/errno.h> 379a6b090cSAhmed S. Darwish #include <linux/kernel.h> 381da177e4SLinus Torvalds #include <linux/slab.h> 391da177e4SLinus Torvalds #include <linux/init.h> 4095ed644fSIngo Molnar #include <linux/mutex.h> 41b2cbae2cSRoland Dreier #include <rdma/rdma_netlink.h> 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds #include "core_priv.h" 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds MODULE_AUTHOR("Roland Dreier"); 461da177e4SLinus Torvalds MODULE_DESCRIPTION("core kernel InfiniBand API"); 471da177e4SLinus Torvalds MODULE_LICENSE("Dual BSD/GPL"); 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds struct ib_client_data { 501da177e4SLinus Torvalds struct list_head list; 511da177e4SLinus Torvalds struct ib_client *client; 521da177e4SLinus Torvalds void * data; 531da177e4SLinus Torvalds }; 541da177e4SLinus Torvalds 55f0626710STejun Heo struct workqueue_struct *ib_wq; 56f0626710STejun Heo EXPORT_SYMBOL_GPL(ib_wq); 57f0626710STejun Heo 581da177e4SLinus Torvalds static LIST_HEAD(device_list); 591da177e4SLinus Torvalds static LIST_HEAD(client_list); 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds /* 6295ed644fSIngo Molnar * device_mutex protects access to both device_list and client_list. 631da177e4SLinus Torvalds * There's no real point to using multiple locks or something fancier 641da177e4SLinus Torvalds * like an rwsem: we always access both lists, and we're always 651da177e4SLinus Torvalds * modifying one list or the other list. In any case this is not a 661da177e4SLinus Torvalds * hot path so there's no point in trying to optimize. 671da177e4SLinus Torvalds */ 6895ed644fSIngo Molnar static DEFINE_MUTEX(device_mutex); 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds static int ib_device_check_mandatory(struct ib_device *device) 711da177e4SLinus Torvalds { 721da177e4SLinus Torvalds #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device, x), #x } 731da177e4SLinus Torvalds static const struct { 741da177e4SLinus Torvalds size_t offset; 751da177e4SLinus Torvalds char *name; 761da177e4SLinus Torvalds } mandatory_table[] = { 771da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_device), 781da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_port), 791da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_pkey), 801da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_gid), 811da177e4SLinus Torvalds IB_MANDATORY_FUNC(alloc_pd), 821da177e4SLinus Torvalds IB_MANDATORY_FUNC(dealloc_pd), 831da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_ah), 841da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_ah), 851da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_qp), 861da177e4SLinus Torvalds IB_MANDATORY_FUNC(modify_qp), 871da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_qp), 881da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_send), 891da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_recv), 901da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_cq), 911da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_cq), 921da177e4SLinus Torvalds IB_MANDATORY_FUNC(poll_cq), 931da177e4SLinus Torvalds IB_MANDATORY_FUNC(req_notify_cq), 941da177e4SLinus Torvalds IB_MANDATORY_FUNC(get_dma_mr), 951da177e4SLinus Torvalds IB_MANDATORY_FUNC(dereg_mr) 961da177e4SLinus Torvalds }; 971da177e4SLinus Torvalds int i; 981da177e4SLinus Torvalds 999a6b090cSAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { 1001da177e4SLinus Torvalds if (!*(void **) ((void *) device + mandatory_table[i].offset)) { 1011da177e4SLinus Torvalds printk(KERN_WARNING "Device %s is missing mandatory function %s\n", 1021da177e4SLinus Torvalds device->name, mandatory_table[i].name); 1031da177e4SLinus Torvalds return -EINVAL; 1041da177e4SLinus Torvalds } 1051da177e4SLinus Torvalds } 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds return 0; 1081da177e4SLinus Torvalds } 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1111da177e4SLinus Torvalds { 1121da177e4SLinus Torvalds struct ib_device *device; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 1151da177e4SLinus Torvalds if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) 1161da177e4SLinus Torvalds return device; 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds return NULL; 1191da177e4SLinus Torvalds } 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds static int alloc_name(char *name) 1231da177e4SLinus Torvalds { 12465d470b3SRoland Dreier unsigned long *inuse; 1251da177e4SLinus Torvalds char buf[IB_DEVICE_NAME_MAX]; 1261da177e4SLinus Torvalds struct ib_device *device; 1271da177e4SLinus Torvalds int i; 1281da177e4SLinus Torvalds 12965d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 1301da177e4SLinus Torvalds if (!inuse) 1311da177e4SLinus Torvalds return -ENOMEM; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 1341da177e4SLinus Torvalds if (!sscanf(device->name, name, &i)) 1351da177e4SLinus Torvalds continue; 1361da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 1371da177e4SLinus Torvalds continue; 1381da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1391da177e4SLinus Torvalds if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) 1401da177e4SLinus Torvalds set_bit(i, inuse); 1411da177e4SLinus Torvalds } 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 1441da177e4SLinus Torvalds free_page((unsigned long) inuse); 1451da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds if (__ib_device_get_by_name(buf)) 1481da177e4SLinus Torvalds return -ENFILE; 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds strlcpy(name, buf, IB_DEVICE_NAME_MAX); 1511da177e4SLinus Torvalds return 0; 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds 1545eb620c8SYosef Etigin static int start_port(struct ib_device *device) 1555eb620c8SYosef Etigin { 1565eb620c8SYosef Etigin return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1; 1575eb620c8SYosef Etigin } 1585eb620c8SYosef Etigin 1595eb620c8SYosef Etigin 1605eb620c8SYosef Etigin static int end_port(struct ib_device *device) 1615eb620c8SYosef Etigin { 1625eb620c8SYosef Etigin return (device->node_type == RDMA_NODE_IB_SWITCH) ? 1635eb620c8SYosef Etigin 0 : device->phys_port_cnt; 1645eb620c8SYosef Etigin } 1655eb620c8SYosef Etigin 1661da177e4SLinus Torvalds /** 1671da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 1681da177e4SLinus Torvalds * @size:size of structure to allocate 1691da177e4SLinus Torvalds * 1701da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 1711da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 1721da177e4SLinus Torvalds * including any private data used by the low-level driver. 1731da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 1741da177e4SLinus Torvalds * ib_alloc_device(). 1751da177e4SLinus Torvalds */ 1761da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 1771da177e4SLinus Torvalds { 1781da177e4SLinus Torvalds BUG_ON(size < sizeof (struct ib_device)); 1791da177e4SLinus Torvalds 180de6eb66bSRoland Dreier return kzalloc(size, GFP_KERNEL); 1811da177e4SLinus Torvalds } 1821da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds /** 1851da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 1861da177e4SLinus Torvalds * @device:structure to free 1871da177e4SLinus Torvalds * 1881da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 1891da177e4SLinus Torvalds */ 1901da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 1911da177e4SLinus Torvalds { 1921da177e4SLinus Torvalds if (device->reg_state == IB_DEV_UNINITIALIZED) { 1931da177e4SLinus Torvalds kfree(device); 1941da177e4SLinus Torvalds return; 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds BUG_ON(device->reg_state != IB_DEV_UNREGISTERED); 1981da177e4SLinus Torvalds 1999206dff1SRoland Dreier kobject_put(&device->dev.kobj); 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 2041da177e4SLinus Torvalds { 2051da177e4SLinus Torvalds struct ib_client_data *context; 2061da177e4SLinus Torvalds unsigned long flags; 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds context = kmalloc(sizeof *context, GFP_KERNEL); 2091da177e4SLinus Torvalds if (!context) { 2101da177e4SLinus Torvalds printk(KERN_WARNING "Couldn't allocate client context for %s/%s\n", 2111da177e4SLinus Torvalds device->name, client->name); 2121da177e4SLinus Torvalds return -ENOMEM; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds context->client = client; 2161da177e4SLinus Torvalds context->data = NULL; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 2191da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 2201da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds return 0; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds 2255eb620c8SYosef Etigin static int read_port_table_lengths(struct ib_device *device) 2265eb620c8SYosef Etigin { 2275eb620c8SYosef Etigin struct ib_port_attr *tprops = NULL; 2285eb620c8SYosef Etigin int num_ports, ret = -ENOMEM; 2295eb620c8SYosef Etigin u8 port_index; 2305eb620c8SYosef Etigin 2315eb620c8SYosef Etigin tprops = kmalloc(sizeof *tprops, GFP_KERNEL); 2325eb620c8SYosef Etigin if (!tprops) 2335eb620c8SYosef Etigin goto out; 2345eb620c8SYosef Etigin 2355eb620c8SYosef Etigin num_ports = end_port(device) - start_port(device) + 1; 2365eb620c8SYosef Etigin 2375eb620c8SYosef Etigin device->pkey_tbl_len = kmalloc(sizeof *device->pkey_tbl_len * num_ports, 2385eb620c8SYosef Etigin GFP_KERNEL); 2395eb620c8SYosef Etigin device->gid_tbl_len = kmalloc(sizeof *device->gid_tbl_len * num_ports, 2405eb620c8SYosef Etigin GFP_KERNEL); 2415eb620c8SYosef Etigin if (!device->pkey_tbl_len || !device->gid_tbl_len) 2425eb620c8SYosef Etigin goto err; 2435eb620c8SYosef Etigin 2445eb620c8SYosef Etigin for (port_index = 0; port_index < num_ports; ++port_index) { 2455eb620c8SYosef Etigin ret = ib_query_port(device, port_index + start_port(device), 2465eb620c8SYosef Etigin tprops); 2475eb620c8SYosef Etigin if (ret) 2485eb620c8SYosef Etigin goto err; 2495eb620c8SYosef Etigin device->pkey_tbl_len[port_index] = tprops->pkey_tbl_len; 2505eb620c8SYosef Etigin device->gid_tbl_len[port_index] = tprops->gid_tbl_len; 2515eb620c8SYosef Etigin } 2525eb620c8SYosef Etigin 2535eb620c8SYosef Etigin ret = 0; 2545eb620c8SYosef Etigin goto out; 2555eb620c8SYosef Etigin 2565eb620c8SYosef Etigin err: 2575eb620c8SYosef Etigin kfree(device->gid_tbl_len); 2585eb620c8SYosef Etigin kfree(device->pkey_tbl_len); 2595eb620c8SYosef Etigin out: 2605eb620c8SYosef Etigin kfree(tprops); 2615eb620c8SYosef Etigin return ret; 2625eb620c8SYosef Etigin } 2635eb620c8SYosef Etigin 2641da177e4SLinus Torvalds /** 2651da177e4SLinus Torvalds * ib_register_device - Register an IB device with IB core 2661da177e4SLinus Torvalds * @device:Device to register 2671da177e4SLinus Torvalds * 2681da177e4SLinus Torvalds * Low-level drivers use ib_register_device() to register their 2691da177e4SLinus Torvalds * devices with the IB core. All registered clients will receive a 2701da177e4SLinus Torvalds * callback for each device that is added. @device must be allocated 2711da177e4SLinus Torvalds * with ib_alloc_device(). 2721da177e4SLinus Torvalds */ 2739a6edb60SRalph Campbell int ib_register_device(struct ib_device *device, 2749a6edb60SRalph Campbell int (*port_callback)(struct ib_device *, 2759a6edb60SRalph Campbell u8, struct kobject *)) 2761da177e4SLinus Torvalds { 2771da177e4SLinus Torvalds int ret; 2781da177e4SLinus Torvalds 27995ed644fSIngo Molnar mutex_lock(&device_mutex); 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds if (strchr(device->name, '%')) { 2821da177e4SLinus Torvalds ret = alloc_name(device->name); 2831da177e4SLinus Torvalds if (ret) 2841da177e4SLinus Torvalds goto out; 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds if (ib_device_check_mandatory(device)) { 2881da177e4SLinus Torvalds ret = -EINVAL; 2891da177e4SLinus Torvalds goto out; 2901da177e4SLinus Torvalds } 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds INIT_LIST_HEAD(&device->event_handler_list); 2931da177e4SLinus Torvalds INIT_LIST_HEAD(&device->client_data_list); 2941da177e4SLinus Torvalds spin_lock_init(&device->event_handler_lock); 2951da177e4SLinus Torvalds spin_lock_init(&device->client_data_lock); 2961da177e4SLinus Torvalds 2975eb620c8SYosef Etigin ret = read_port_table_lengths(device); 2985eb620c8SYosef Etigin if (ret) { 2995eb620c8SYosef Etigin printk(KERN_WARNING "Couldn't create table lengths cache for device %s\n", 3005eb620c8SYosef Etigin device->name); 3015eb620c8SYosef Etigin goto out; 3025eb620c8SYosef Etigin } 3035eb620c8SYosef Etigin 3049a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 3051da177e4SLinus Torvalds if (ret) { 3061da177e4SLinus Torvalds printk(KERN_WARNING "Couldn't register device %s with driver model\n", 3071da177e4SLinus Torvalds device->name); 3085eb620c8SYosef Etigin kfree(device->gid_tbl_len); 3095eb620c8SYosef Etigin kfree(device->pkey_tbl_len); 3101da177e4SLinus Torvalds goto out; 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds list_add_tail(&device->core_list, &device_list); 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds { 3181da177e4SLinus Torvalds struct ib_client *client; 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 3211da177e4SLinus Torvalds if (client->add && !add_client_context(device, client)) 3221da177e4SLinus Torvalds client->add(device); 3231da177e4SLinus Torvalds } 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds out: 32695ed644fSIngo Molnar mutex_unlock(&device_mutex); 3271da177e4SLinus Torvalds return ret; 3281da177e4SLinus Torvalds } 3291da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds /** 3321da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 3331da177e4SLinus Torvalds * @device:Device to unregister 3341da177e4SLinus Torvalds * 3351da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 3361da177e4SLinus Torvalds */ 3371da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 3381da177e4SLinus Torvalds { 3391da177e4SLinus Torvalds struct ib_client *client; 3401da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 3411da177e4SLinus Torvalds unsigned long flags; 3421da177e4SLinus Torvalds 34395ed644fSIngo Molnar mutex_lock(&device_mutex); 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds list_for_each_entry_reverse(client, &client_list, list) 3461da177e4SLinus Torvalds if (client->remove) 3471da177e4SLinus Torvalds client->remove(device); 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds list_del(&device->core_list); 3501da177e4SLinus Torvalds 3515eb620c8SYosef Etigin kfree(device->gid_tbl_len); 3525eb620c8SYosef Etigin kfree(device->pkey_tbl_len); 3535eb620c8SYosef Etigin 35495ed644fSIngo Molnar mutex_unlock(&device_mutex); 3551da177e4SLinus Torvalds 3569206dff1SRoland Dreier ib_device_unregister_sysfs(device); 3579206dff1SRoland Dreier 3581da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 3591da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 3601da177e4SLinus Torvalds kfree(context); 3611da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 3641da177e4SLinus Torvalds } 3651da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds /** 3681da177e4SLinus Torvalds * ib_register_client - Register an IB client 3691da177e4SLinus Torvalds * @client:Client to register 3701da177e4SLinus Torvalds * 3711da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 3721da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 3731da177e4SLinus Torvalds * device is added, each registered client's add method will be called 3741da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 3751da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 3761da177e4SLinus Torvalds * order that clients were registered). In addition, when 3771da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 3781da177e4SLinus Torvalds * callback for all devices already registered. 3791da177e4SLinus Torvalds */ 3801da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 3811da177e4SLinus Torvalds { 3821da177e4SLinus Torvalds struct ib_device *device; 3831da177e4SLinus Torvalds 38495ed644fSIngo Molnar mutex_lock(&device_mutex); 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds list_add_tail(&client->list, &client_list); 3871da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 3881da177e4SLinus Torvalds if (client->add && !add_client_context(device, client)) 3891da177e4SLinus Torvalds client->add(device); 3901da177e4SLinus Torvalds 39195ed644fSIngo Molnar mutex_unlock(&device_mutex); 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds return 0; 3941da177e4SLinus Torvalds } 3951da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds /** 3981da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 3991da177e4SLinus Torvalds * @client:Client to unregister 4001da177e4SLinus Torvalds * 4011da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 4021da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 4031da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 4041da177e4SLinus Torvalds */ 4051da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 4061da177e4SLinus Torvalds { 4071da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 4081da177e4SLinus Torvalds struct ib_device *device; 4091da177e4SLinus Torvalds unsigned long flags; 4101da177e4SLinus Torvalds 41195ed644fSIngo Molnar mutex_lock(&device_mutex); 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 4141da177e4SLinus Torvalds if (client->remove) 4151da177e4SLinus Torvalds client->remove(device); 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 4181da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 4191da177e4SLinus Torvalds if (context->client == client) { 4201da177e4SLinus Torvalds list_del(&context->list); 4211da177e4SLinus Torvalds kfree(context); 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds list_del(&client->list); 4261da177e4SLinus Torvalds 42795ed644fSIngo Molnar mutex_unlock(&device_mutex); 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 4301da177e4SLinus Torvalds 4311da177e4SLinus Torvalds /** 4321da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 4331da177e4SLinus Torvalds * @device:Device to get context for 4341da177e4SLinus Torvalds * @client:Client to get context for 4351da177e4SLinus Torvalds * 4361da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 4371da177e4SLinus Torvalds * ib_set_client_data(). 4381da177e4SLinus Torvalds */ 4391da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 4401da177e4SLinus Torvalds { 4411da177e4SLinus Torvalds struct ib_client_data *context; 4421da177e4SLinus Torvalds void *ret = NULL; 4431da177e4SLinus Torvalds unsigned long flags; 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 4461da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 4471da177e4SLinus Torvalds if (context->client == client) { 4481da177e4SLinus Torvalds ret = context->data; 4491da177e4SLinus Torvalds break; 4501da177e4SLinus Torvalds } 4511da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds return ret; 4541da177e4SLinus Torvalds } 4551da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds /** 4589cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 4591da177e4SLinus Torvalds * @device:Device to set context for 4601da177e4SLinus Torvalds * @client:Client to set context for 4611da177e4SLinus Torvalds * @data:Context to set 4621da177e4SLinus Torvalds * 4631da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 4641da177e4SLinus Torvalds * ib_get_client_data(). 4651da177e4SLinus Torvalds */ 4661da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 4671da177e4SLinus Torvalds void *data) 4681da177e4SLinus Torvalds { 4691da177e4SLinus Torvalds struct ib_client_data *context; 4701da177e4SLinus Torvalds unsigned long flags; 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 4731da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 4741da177e4SLinus Torvalds if (context->client == client) { 4751da177e4SLinus Torvalds context->data = data; 4761da177e4SLinus Torvalds goto out; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds printk(KERN_WARNING "No client context found for %s/%s\n", 4801da177e4SLinus Torvalds device->name, client->name); 4811da177e4SLinus Torvalds 4821da177e4SLinus Torvalds out: 4831da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 4841da177e4SLinus Torvalds } 4851da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds /** 4881da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 4891da177e4SLinus Torvalds * @event_handler:Handler to register 4901da177e4SLinus Torvalds * 4911da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 4921da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 4931da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 4941da177e4SLinus Torvalds * callback may occur in interrupt context. 4951da177e4SLinus Torvalds */ 4961da177e4SLinus Torvalds int ib_register_event_handler (struct ib_event_handler *event_handler) 4971da177e4SLinus Torvalds { 4981da177e4SLinus Torvalds unsigned long flags; 4991da177e4SLinus Torvalds 5001da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 5011da177e4SLinus Torvalds list_add_tail(&event_handler->list, 5021da177e4SLinus Torvalds &event_handler->device->event_handler_list); 5031da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvalds return 0; 5061da177e4SLinus Torvalds } 5071da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 5081da177e4SLinus Torvalds 5091da177e4SLinus Torvalds /** 5101da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 5111da177e4SLinus Torvalds * @event_handler:Handler to unregister 5121da177e4SLinus Torvalds * 5131da177e4SLinus Torvalds * Unregister an event handler registered with 5141da177e4SLinus Torvalds * ib_register_event_handler(). 5151da177e4SLinus Torvalds */ 5161da177e4SLinus Torvalds int ib_unregister_event_handler(struct ib_event_handler *event_handler) 5171da177e4SLinus Torvalds { 5181da177e4SLinus Torvalds unsigned long flags; 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 5211da177e4SLinus Torvalds list_del(&event_handler->list); 5221da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds return 0; 5251da177e4SLinus Torvalds } 5261da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds /** 5291da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 5301da177e4SLinus Torvalds * @event:Event to dispatch 5311da177e4SLinus Torvalds * 5321da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 5331da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 5341da177e4SLinus Torvalds * occurs. 5351da177e4SLinus Torvalds */ 5361da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 5371da177e4SLinus Torvalds { 5381da177e4SLinus Torvalds unsigned long flags; 5391da177e4SLinus Torvalds struct ib_event_handler *handler; 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 5441da177e4SLinus Torvalds handler->handler(handler, event); 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 5471da177e4SLinus Torvalds } 5481da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 5491da177e4SLinus Torvalds 5501da177e4SLinus Torvalds /** 5511da177e4SLinus Torvalds * ib_query_device - Query IB device attributes 5521da177e4SLinus Torvalds * @device:Device to query 5531da177e4SLinus Torvalds * @device_attr:Device attributes 5541da177e4SLinus Torvalds * 5551da177e4SLinus Torvalds * ib_query_device() returns the attributes of a device through the 5561da177e4SLinus Torvalds * @device_attr pointer. 5571da177e4SLinus Torvalds */ 5581da177e4SLinus Torvalds int ib_query_device(struct ib_device *device, 5591da177e4SLinus Torvalds struct ib_device_attr *device_attr) 5601da177e4SLinus Torvalds { 5611da177e4SLinus Torvalds return device->query_device(device, device_attr); 5621da177e4SLinus Torvalds } 5631da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_device); 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds /** 5661da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 5671da177e4SLinus Torvalds * @device:Device to query 5681da177e4SLinus Torvalds * @port_num:Port number to query 5691da177e4SLinus Torvalds * @port_attr:Port attributes 5701da177e4SLinus Torvalds * 5711da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 5721da177e4SLinus Torvalds * @port_attr pointer. 5731da177e4SLinus Torvalds */ 5741da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 5751da177e4SLinus Torvalds u8 port_num, 5761da177e4SLinus Torvalds struct ib_port_attr *port_attr) 5771da177e4SLinus Torvalds { 5781af4c435SRoland Dreier if (port_num < start_port(device) || port_num > end_port(device)) 579116c0074SRoland Dreier return -EINVAL; 580116c0074SRoland Dreier 5811da177e4SLinus Torvalds return device->query_port(device, port_num, port_attr); 5821da177e4SLinus Torvalds } 5831da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /** 5861da177e4SLinus Torvalds * ib_query_gid - Get GID table entry 5871da177e4SLinus Torvalds * @device:Device to query 5881da177e4SLinus Torvalds * @port_num:Port number to query 5891da177e4SLinus Torvalds * @index:GID table index to query 5901da177e4SLinus Torvalds * @gid:Returned GID 5911da177e4SLinus Torvalds * 5921da177e4SLinus Torvalds * ib_query_gid() fetches the specified GID table entry. 5931da177e4SLinus Torvalds */ 5941da177e4SLinus Torvalds int ib_query_gid(struct ib_device *device, 5951da177e4SLinus Torvalds u8 port_num, int index, union ib_gid *gid) 5961da177e4SLinus Torvalds { 5971da177e4SLinus Torvalds return device->query_gid(device, port_num, index, gid); 5981da177e4SLinus Torvalds } 5991da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_gid); 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds /** 6021da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 6031da177e4SLinus Torvalds * @device:Device to query 6041da177e4SLinus Torvalds * @port_num:Port number to query 6051da177e4SLinus Torvalds * @index:P_Key table index to query 6061da177e4SLinus Torvalds * @pkey:Returned P_Key 6071da177e4SLinus Torvalds * 6081da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 6091da177e4SLinus Torvalds */ 6101da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 6111da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 6121da177e4SLinus Torvalds { 6131da177e4SLinus Torvalds return device->query_pkey(device, port_num, index, pkey); 6141da177e4SLinus Torvalds } 6151da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds /** 6181da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 6191da177e4SLinus Torvalds * @device:Device to modify 6201da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 6211da177e4SLinus Torvalds * @device_modify:New attribute values 6221da177e4SLinus Torvalds * 6231da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 6241da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 6251da177e4SLinus Torvalds */ 6261da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 6271da177e4SLinus Torvalds int device_modify_mask, 6281da177e4SLinus Torvalds struct ib_device_modify *device_modify) 6291da177e4SLinus Torvalds { 63010e1b54bSBart Van Assche if (!device->modify_device) 63110e1b54bSBart Van Assche return -ENOSYS; 63210e1b54bSBart Van Assche 6331da177e4SLinus Torvalds return device->modify_device(device, device_modify_mask, 6341da177e4SLinus Torvalds device_modify); 6351da177e4SLinus Torvalds } 6361da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds /** 6391da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 6401da177e4SLinus Torvalds * @device: The device to modify. 6411da177e4SLinus Torvalds * @port_num: The number of the port to modify. 6421da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 6431da177e4SLinus Torvalds * to change. 6441da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 6451da177e4SLinus Torvalds * 6461da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 6471da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 6481da177e4SLinus Torvalds */ 6491da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 6501da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 6511da177e4SLinus Torvalds struct ib_port_modify *port_modify) 6521da177e4SLinus Torvalds { 65310e1b54bSBart Van Assche if (!device->modify_port) 65410e1b54bSBart Van Assche return -ENOSYS; 65510e1b54bSBart Van Assche 6561af4c435SRoland Dreier if (port_num < start_port(device) || port_num > end_port(device)) 657116c0074SRoland Dreier return -EINVAL; 658116c0074SRoland Dreier 6591da177e4SLinus Torvalds return device->modify_port(device, port_num, port_modify_mask, 6601da177e4SLinus Torvalds port_modify); 6611da177e4SLinus Torvalds } 6621da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 6631da177e4SLinus Torvalds 6645eb620c8SYosef Etigin /** 6655eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 6665eb620c8SYosef Etigin * a specified GID value occurs. 6675eb620c8SYosef Etigin * @device: The device to query. 6685eb620c8SYosef Etigin * @gid: The GID value to search for. 6695eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 6705eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 6715eb620c8SYosef Etigin * parameter may be NULL. 6725eb620c8SYosef Etigin */ 6735eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 6745eb620c8SYosef Etigin u8 *port_num, u16 *index) 6755eb620c8SYosef Etigin { 6765eb620c8SYosef Etigin union ib_gid tmp_gid; 6775eb620c8SYosef Etigin int ret, port, i; 6785eb620c8SYosef Etigin 6795eb620c8SYosef Etigin for (port = start_port(device); port <= end_port(device); ++port) { 6805eb620c8SYosef Etigin for (i = 0; i < device->gid_tbl_len[port - start_port(device)]; ++i) { 6815eb620c8SYosef Etigin ret = ib_query_gid(device, port, i, &tmp_gid); 6825eb620c8SYosef Etigin if (ret) 6835eb620c8SYosef Etigin return ret; 6845eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 6855eb620c8SYosef Etigin *port_num = port; 6865eb620c8SYosef Etigin if (index) 6875eb620c8SYosef Etigin *index = i; 6885eb620c8SYosef Etigin return 0; 6895eb620c8SYosef Etigin } 6905eb620c8SYosef Etigin } 6915eb620c8SYosef Etigin } 6925eb620c8SYosef Etigin 6935eb620c8SYosef Etigin return -ENOENT; 6945eb620c8SYosef Etigin } 6955eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 6965eb620c8SYosef Etigin 6975eb620c8SYosef Etigin /** 6985eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 6995eb620c8SYosef Etigin * PKey value occurs. 7005eb620c8SYosef Etigin * @device: The device to query. 7015eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 7025eb620c8SYosef Etigin * @pkey: The PKey value to search for. 7035eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 7045eb620c8SYosef Etigin */ 7055eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 7065eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 7075eb620c8SYosef Etigin { 7085eb620c8SYosef Etigin int ret, i; 7095eb620c8SYosef Etigin u16 tmp_pkey; 710ff7166c4SJack Morgenstein int partial_ix = -1; 7115eb620c8SYosef Etigin 7125eb620c8SYosef Etigin for (i = 0; i < device->pkey_tbl_len[port_num - start_port(device)]; ++i) { 7135eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 7145eb620c8SYosef Etigin if (ret) 7155eb620c8SYosef Etigin return ret; 71636026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 717ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 718ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 7195eb620c8SYosef Etigin *index = i; 7205eb620c8SYosef Etigin return 0; 7215eb620c8SYosef Etigin } 722ff7166c4SJack Morgenstein if (partial_ix < 0) 723ff7166c4SJack Morgenstein partial_ix = i; 724ff7166c4SJack Morgenstein } 7255eb620c8SYosef Etigin } 7265eb620c8SYosef Etigin 727ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 728ff7166c4SJack Morgenstein if (partial_ix >= 0) { 729ff7166c4SJack Morgenstein *index = partial_ix; 730ff7166c4SJack Morgenstein return 0; 731ff7166c4SJack Morgenstein } 7325eb620c8SYosef Etigin return -ENOENT; 7335eb620c8SYosef Etigin } 7345eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 7355eb620c8SYosef Etigin 7361da177e4SLinus Torvalds static int __init ib_core_init(void) 7371da177e4SLinus Torvalds { 7381da177e4SLinus Torvalds int ret; 7391da177e4SLinus Torvalds 740f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 741f0626710STejun Heo if (!ib_wq) 742f0626710STejun Heo return -ENOMEM; 743f0626710STejun Heo 7441da177e4SLinus Torvalds ret = ib_sysfs_setup(); 745fd75c789SNir Muchtar if (ret) { 7461da177e4SLinus Torvalds printk(KERN_WARNING "Couldn't create InfiniBand device class\n"); 747fd75c789SNir Muchtar goto err; 748fd75c789SNir Muchtar } 7491da177e4SLinus Torvalds 750b2cbae2cSRoland Dreier ret = ibnl_init(); 7511da177e4SLinus Torvalds if (ret) { 752b2cbae2cSRoland Dreier printk(KERN_WARNING "Couldn't init IB netlink interface\n"); 753fd75c789SNir Muchtar goto err_sysfs; 7541da177e4SLinus Torvalds } 7551da177e4SLinus Torvalds 756b2cbae2cSRoland Dreier ret = ib_cache_setup(); 757b2cbae2cSRoland Dreier if (ret) { 758b2cbae2cSRoland Dreier printk(KERN_WARNING "Couldn't set up InfiniBand P_Key/GID cache\n"); 759b2cbae2cSRoland Dreier goto err_nl; 760b2cbae2cSRoland Dreier } 761b2cbae2cSRoland Dreier 762fd75c789SNir Muchtar return 0; 763fd75c789SNir Muchtar 764b2cbae2cSRoland Dreier err_nl: 765b2cbae2cSRoland Dreier ibnl_cleanup(); 766b2cbae2cSRoland Dreier 767fd75c789SNir Muchtar err_sysfs: 768fd75c789SNir Muchtar ib_sysfs_cleanup(); 769fd75c789SNir Muchtar 770fd75c789SNir Muchtar err: 771fd75c789SNir Muchtar destroy_workqueue(ib_wq); 7721da177e4SLinus Torvalds return ret; 7731da177e4SLinus Torvalds } 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 7761da177e4SLinus Torvalds { 7771da177e4SLinus Torvalds ib_cache_cleanup(); 778b2cbae2cSRoland Dreier ibnl_cleanup(); 7791da177e4SLinus Torvalds ib_sysfs_cleanup(); 780f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 781f0626710STejun Heo destroy_workqueue(ib_wq); 7821da177e4SLinus Torvalds } 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds module_init(ib_core_init); 7851da177e4SLinus Torvalds module_exit(ib_core_cleanup); 786