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> 419268f72dSYotam Kenneth #include <linux/netdevice.h> 428f408ab6SDaniel Jurgens #include <linux/security.h> 438f408ab6SDaniel Jurgens #include <linux/notifier.h> 44b2cbae2cSRoland Dreier #include <rdma/rdma_netlink.h> 4503db3a2dSMatan Barak #include <rdma/ib_addr.h> 4603db3a2dSMatan Barak #include <rdma/ib_cache.h> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds #include "core_priv.h" 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds MODULE_AUTHOR("Roland Dreier"); 511da177e4SLinus Torvalds MODULE_DESCRIPTION("core kernel InfiniBand API"); 521da177e4SLinus Torvalds MODULE_LICENSE("Dual BSD/GPL"); 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds struct ib_client_data { 551da177e4SLinus Torvalds struct list_head list; 561da177e4SLinus Torvalds struct ib_client *client; 571da177e4SLinus Torvalds void * data; 587c1eb45aSHaggai Eran /* The device or client is going down. Do not call client or device 597c1eb45aSHaggai Eran * callbacks other than remove(). */ 607c1eb45aSHaggai Eran bool going_down; 611da177e4SLinus Torvalds }; 621da177e4SLinus Torvalds 6314d3a3b2SChristoph Hellwig struct workqueue_struct *ib_comp_wq; 64f0626710STejun Heo struct workqueue_struct *ib_wq; 65f0626710STejun Heo EXPORT_SYMBOL_GPL(ib_wq); 66f0626710STejun Heo 675aa44bb9SHaggai Eran /* The device_list and client_list contain devices and clients after their 685aa44bb9SHaggai Eran * registration has completed, and the devices and clients are removed 695aa44bb9SHaggai Eran * during unregistration. */ 701da177e4SLinus Torvalds static LIST_HEAD(device_list); 711da177e4SLinus Torvalds static LIST_HEAD(client_list); 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds /* 745aa44bb9SHaggai Eran * device_mutex and lists_rwsem protect access to both device_list and 755aa44bb9SHaggai Eran * client_list. device_mutex protects writer access by device and client 765aa44bb9SHaggai Eran * registration / de-registration. lists_rwsem protects reader access to 775aa44bb9SHaggai Eran * these lists. Iterators of these lists must lock it for read, while updates 785aa44bb9SHaggai Eran * to the lists must be done with a write lock. A special case is when the 795aa44bb9SHaggai Eran * device_mutex is locked. In this case locking the lists for read access is 805aa44bb9SHaggai Eran * not necessary as the device_mutex implies it. 817c1eb45aSHaggai Eran * 827c1eb45aSHaggai Eran * lists_rwsem also protects access to the client data list. 831da177e4SLinus Torvalds */ 8495ed644fSIngo Molnar static DEFINE_MUTEX(device_mutex); 855aa44bb9SHaggai Eran static DECLARE_RWSEM(lists_rwsem); 865aa44bb9SHaggai Eran 878f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 888f408ab6SDaniel Jurgens void *lsm_data); 898f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work); 908f408ab6SDaniel Jurgens static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task); 918f408ab6SDaniel Jurgens 928f408ab6SDaniel Jurgens static struct notifier_block ibdev_lsm_nb = { 938f408ab6SDaniel Jurgens .notifier_call = ib_security_change, 948f408ab6SDaniel Jurgens }; 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds static int ib_device_check_mandatory(struct ib_device *device) 971da177e4SLinus Torvalds { 981da177e4SLinus Torvalds #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device, x), #x } 991da177e4SLinus Torvalds static const struct { 1001da177e4SLinus Torvalds size_t offset; 1011da177e4SLinus Torvalds char *name; 1021da177e4SLinus Torvalds } mandatory_table[] = { 1031da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_device), 1041da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_port), 1051da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_pkey), 1061da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_gid), 1071da177e4SLinus Torvalds IB_MANDATORY_FUNC(alloc_pd), 1081da177e4SLinus Torvalds IB_MANDATORY_FUNC(dealloc_pd), 1091da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_ah), 1101da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_ah), 1111da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_qp), 1121da177e4SLinus Torvalds IB_MANDATORY_FUNC(modify_qp), 1131da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_qp), 1141da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_send), 1151da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_recv), 1161da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_cq), 1171da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_cq), 1181da177e4SLinus Torvalds IB_MANDATORY_FUNC(poll_cq), 1191da177e4SLinus Torvalds IB_MANDATORY_FUNC(req_notify_cq), 1201da177e4SLinus Torvalds IB_MANDATORY_FUNC(get_dma_mr), 1217738613eSIra Weiny IB_MANDATORY_FUNC(dereg_mr), 1227738613eSIra Weiny IB_MANDATORY_FUNC(get_port_immutable) 1231da177e4SLinus Torvalds }; 1241da177e4SLinus Torvalds int i; 1251da177e4SLinus Torvalds 1269a6b090cSAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { 1271da177e4SLinus Torvalds if (!*(void **) ((void *) device + mandatory_table[i].offset)) { 128aba25a3eSParav Pandit pr_warn("Device %s is missing mandatory function %s\n", 1291da177e4SLinus Torvalds device->name, mandatory_table[i].name); 1301da177e4SLinus Torvalds return -EINVAL; 1311da177e4SLinus Torvalds } 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds return 0; 1351da177e4SLinus Torvalds } 1361da177e4SLinus Torvalds 137ecc82c53SLeon Romanovsky struct ib_device *__ib_device_get_by_index(u32 index) 138ecc82c53SLeon Romanovsky { 139ecc82c53SLeon Romanovsky struct ib_device *device; 140ecc82c53SLeon Romanovsky 141ecc82c53SLeon Romanovsky list_for_each_entry(device, &device_list, core_list) 142ecc82c53SLeon Romanovsky if (device->index == index) 143ecc82c53SLeon Romanovsky return device; 144ecc82c53SLeon Romanovsky 145ecc82c53SLeon Romanovsky return NULL; 146ecc82c53SLeon Romanovsky } 147ecc82c53SLeon Romanovsky 1481da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1491da177e4SLinus Torvalds { 1501da177e4SLinus Torvalds struct ib_device *device; 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 1531da177e4SLinus Torvalds if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) 1541da177e4SLinus Torvalds return device; 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds return NULL; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds static int alloc_name(char *name) 1601da177e4SLinus Torvalds { 16165d470b3SRoland Dreier unsigned long *inuse; 1621da177e4SLinus Torvalds char buf[IB_DEVICE_NAME_MAX]; 1631da177e4SLinus Torvalds struct ib_device *device; 1641da177e4SLinus Torvalds int i; 1651da177e4SLinus Torvalds 16665d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 1671da177e4SLinus Torvalds if (!inuse) 1681da177e4SLinus Torvalds return -ENOMEM; 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 1711da177e4SLinus Torvalds if (!sscanf(device->name, name, &i)) 1721da177e4SLinus Torvalds continue; 1731da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 1741da177e4SLinus Torvalds continue; 1751da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1761da177e4SLinus Torvalds if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) 1771da177e4SLinus Torvalds set_bit(i, inuse); 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 1811da177e4SLinus Torvalds free_page((unsigned long) inuse); 1821da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds if (__ib_device_get_by_name(buf)) 1851da177e4SLinus Torvalds return -ENFILE; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds strlcpy(name, buf, IB_DEVICE_NAME_MAX); 1881da177e4SLinus Torvalds return 0; 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 19155aeed06SJason Gunthorpe static void ib_device_release(struct device *device) 19255aeed06SJason Gunthorpe { 19355aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 19455aeed06SJason Gunthorpe 1954be3a4faSParav Pandit WARN_ON(dev->reg_state == IB_DEV_REGISTERED); 1964be3a4faSParav Pandit if (dev->reg_state == IB_DEV_UNREGISTERED) { 1974be3a4faSParav Pandit /* 1984be3a4faSParav Pandit * In IB_DEV_UNINITIALIZED state, cache or port table 1994be3a4faSParav Pandit * is not even created. Free cache and port table only when 2004be3a4faSParav Pandit * device reaches UNREGISTERED state. 2014be3a4faSParav Pandit */ 20203db3a2dSMatan Barak ib_cache_release_one(dev); 20355aeed06SJason Gunthorpe kfree(dev->port_immutable); 2044be3a4faSParav Pandit } 20555aeed06SJason Gunthorpe kfree(dev); 20655aeed06SJason Gunthorpe } 20755aeed06SJason Gunthorpe 20855aeed06SJason Gunthorpe static int ib_device_uevent(struct device *device, 20955aeed06SJason Gunthorpe struct kobj_uevent_env *env) 21055aeed06SJason Gunthorpe { 21155aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 21255aeed06SJason Gunthorpe 21355aeed06SJason Gunthorpe if (add_uevent_var(env, "NAME=%s", dev->name)) 21455aeed06SJason Gunthorpe return -ENOMEM; 21555aeed06SJason Gunthorpe 21655aeed06SJason Gunthorpe /* 21755aeed06SJason Gunthorpe * It would be nice to pass the node GUID with the event... 21855aeed06SJason Gunthorpe */ 21955aeed06SJason Gunthorpe 22055aeed06SJason Gunthorpe return 0; 22155aeed06SJason Gunthorpe } 22255aeed06SJason Gunthorpe 22355aeed06SJason Gunthorpe static struct class ib_class = { 22455aeed06SJason Gunthorpe .name = "infiniband", 22555aeed06SJason Gunthorpe .dev_release = ib_device_release, 22655aeed06SJason Gunthorpe .dev_uevent = ib_device_uevent, 22755aeed06SJason Gunthorpe }; 22855aeed06SJason Gunthorpe 2291da177e4SLinus Torvalds /** 2301da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 2311da177e4SLinus Torvalds * @size:size of structure to allocate 2321da177e4SLinus Torvalds * 2331da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 2341da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 2351da177e4SLinus Torvalds * including any private data used by the low-level driver. 2361da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 2371da177e4SLinus Torvalds * ib_alloc_device(). 2381da177e4SLinus Torvalds */ 2391da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 2401da177e4SLinus Torvalds { 24155aeed06SJason Gunthorpe struct ib_device *device; 2421da177e4SLinus Torvalds 24355aeed06SJason Gunthorpe if (WARN_ON(size < sizeof(struct ib_device))) 24455aeed06SJason Gunthorpe return NULL; 24555aeed06SJason Gunthorpe 24655aeed06SJason Gunthorpe device = kzalloc(size, GFP_KERNEL); 24755aeed06SJason Gunthorpe if (!device) 24855aeed06SJason Gunthorpe return NULL; 24955aeed06SJason Gunthorpe 25055aeed06SJason Gunthorpe device->dev.class = &ib_class; 25155aeed06SJason Gunthorpe device_initialize(&device->dev); 25255aeed06SJason Gunthorpe 25355aeed06SJason Gunthorpe dev_set_drvdata(&device->dev, device); 25455aeed06SJason Gunthorpe 25555aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->event_handler_list); 25655aeed06SJason Gunthorpe spin_lock_init(&device->event_handler_lock); 25755aeed06SJason Gunthorpe spin_lock_init(&device->client_data_lock); 25855aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->client_data_list); 25955aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->port_list); 26055aeed06SJason Gunthorpe 26155aeed06SJason Gunthorpe return device; 2621da177e4SLinus Torvalds } 2631da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds /** 2661da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 2671da177e4SLinus Torvalds * @device:structure to free 2681da177e4SLinus Torvalds * 2691da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 2701da177e4SLinus Torvalds */ 2711da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 2721da177e4SLinus Torvalds { 27355aeed06SJason Gunthorpe WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && 27455aeed06SJason Gunthorpe device->reg_state != IB_DEV_UNINITIALIZED); 2759206dff1SRoland Dreier kobject_put(&device->dev.kobj); 2761da177e4SLinus Torvalds } 2771da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 2801da177e4SLinus Torvalds { 2811da177e4SLinus Torvalds struct ib_client_data *context; 2821da177e4SLinus Torvalds unsigned long flags; 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds context = kmalloc(sizeof *context, GFP_KERNEL); 285a0b3455fSLeon Romanovsky if (!context) 2861da177e4SLinus Torvalds return -ENOMEM; 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds context->client = client; 2891da177e4SLinus Torvalds context->data = NULL; 2907c1eb45aSHaggai Eran context->going_down = false; 2911da177e4SLinus Torvalds 2927c1eb45aSHaggai Eran down_write(&lists_rwsem); 2931da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 2941da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 2951da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 2967c1eb45aSHaggai Eran up_write(&lists_rwsem); 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds return 0; 2991da177e4SLinus Torvalds } 3001da177e4SLinus Torvalds 301337877a4SIra Weiny static int verify_immutable(const struct ib_device *dev, u8 port) 302337877a4SIra Weiny { 303337877a4SIra Weiny return WARN_ON(!rdma_cap_ib_mad(dev, port) && 304337877a4SIra Weiny rdma_max_mad_size(dev, port) != 0); 305337877a4SIra Weiny } 306337877a4SIra Weiny 3077738613eSIra Weiny static int read_port_immutable(struct ib_device *device) 3085eb620c8SYosef Etigin { 30955aeed06SJason Gunthorpe int ret; 3107738613eSIra Weiny u8 start_port = rdma_start_port(device); 3117738613eSIra Weiny u8 end_port = rdma_end_port(device); 3127738613eSIra Weiny u8 port; 3135eb620c8SYosef Etigin 3147738613eSIra Weiny /** 3157738613eSIra Weiny * device->port_immutable is indexed directly by the port number to make 3167738613eSIra Weiny * access to this data as efficient as possible. 3177738613eSIra Weiny * 3187738613eSIra Weiny * Therefore port_immutable is declared as a 1 based array with 3197738613eSIra Weiny * potential empty slots at the beginning. 3207738613eSIra Weiny */ 3217738613eSIra Weiny device->port_immutable = kzalloc(sizeof(*device->port_immutable) 3227738613eSIra Weiny * (end_port + 1), 3235eb620c8SYosef Etigin GFP_KERNEL); 3247738613eSIra Weiny if (!device->port_immutable) 32555aeed06SJason Gunthorpe return -ENOMEM; 3265eb620c8SYosef Etigin 3277738613eSIra Weiny for (port = start_port; port <= end_port; ++port) { 3287738613eSIra Weiny ret = device->get_port_immutable(device, port, 3297738613eSIra Weiny &device->port_immutable[port]); 3305eb620c8SYosef Etigin if (ret) 3315eb620c8SYosef Etigin return ret; 33255aeed06SJason Gunthorpe 33355aeed06SJason Gunthorpe if (verify_immutable(device, port)) 33455aeed06SJason Gunthorpe return -EINVAL; 33555aeed06SJason Gunthorpe } 33655aeed06SJason Gunthorpe return 0; 3375eb620c8SYosef Etigin } 3385eb620c8SYosef Etigin 3399abb0d1bSLeon Romanovsky void ib_get_device_fw_str(struct ib_device *dev, char *str) 3405fa76c20SIra Weiny { 3415fa76c20SIra Weiny if (dev->get_dev_fw_str) 3429abb0d1bSLeon Romanovsky dev->get_dev_fw_str(dev, str); 3435fa76c20SIra Weiny else 3445fa76c20SIra Weiny str[0] = '\0'; 3455fa76c20SIra Weiny } 3465fa76c20SIra Weiny EXPORT_SYMBOL(ib_get_device_fw_str); 3475fa76c20SIra Weiny 348d291f1a6SDaniel Jurgens static int setup_port_pkey_list(struct ib_device *device) 349d291f1a6SDaniel Jurgens { 350d291f1a6SDaniel Jurgens int i; 351d291f1a6SDaniel Jurgens 352d291f1a6SDaniel Jurgens /** 353d291f1a6SDaniel Jurgens * device->port_pkey_list is indexed directly by the port number, 354d291f1a6SDaniel Jurgens * Therefore it is declared as a 1 based array with potential empty 355d291f1a6SDaniel Jurgens * slots at the beginning. 356d291f1a6SDaniel Jurgens */ 357d291f1a6SDaniel Jurgens device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, 358d291f1a6SDaniel Jurgens sizeof(*device->port_pkey_list), 359d291f1a6SDaniel Jurgens GFP_KERNEL); 360d291f1a6SDaniel Jurgens 361d291f1a6SDaniel Jurgens if (!device->port_pkey_list) 362d291f1a6SDaniel Jurgens return -ENOMEM; 363d291f1a6SDaniel Jurgens 364d291f1a6SDaniel Jurgens for (i = 0; i < (rdma_end_port(device) + 1); i++) { 365d291f1a6SDaniel Jurgens spin_lock_init(&device->port_pkey_list[i].list_lock); 366d291f1a6SDaniel Jurgens INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); 367d291f1a6SDaniel Jurgens } 368d291f1a6SDaniel Jurgens 369d291f1a6SDaniel Jurgens return 0; 370d291f1a6SDaniel Jurgens } 371d291f1a6SDaniel Jurgens 3728f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work) 3738f408ab6SDaniel Jurgens { 3748f408ab6SDaniel Jurgens struct ib_device *dev; 3758f408ab6SDaniel Jurgens 3768f408ab6SDaniel Jurgens down_read(&lists_rwsem); 3778f408ab6SDaniel Jurgens list_for_each_entry(dev, &device_list, core_list) { 3788f408ab6SDaniel Jurgens int i; 3798f408ab6SDaniel Jurgens 3808f408ab6SDaniel Jurgens for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { 3818f408ab6SDaniel Jurgens u64 sp; 3828f408ab6SDaniel Jurgens int ret = ib_get_cached_subnet_prefix(dev, 3838f408ab6SDaniel Jurgens i, 3848f408ab6SDaniel Jurgens &sp); 3858f408ab6SDaniel Jurgens 3868f408ab6SDaniel Jurgens WARN_ONCE(ret, 3878f408ab6SDaniel Jurgens "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", 3888f408ab6SDaniel Jurgens ret); 389a750cfdeSDaniel Jurgens if (!ret) 3908f408ab6SDaniel Jurgens ib_security_cache_change(dev, i, sp); 3918f408ab6SDaniel Jurgens } 3928f408ab6SDaniel Jurgens } 3938f408ab6SDaniel Jurgens up_read(&lists_rwsem); 3948f408ab6SDaniel Jurgens } 3958f408ab6SDaniel Jurgens 3968f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 3978f408ab6SDaniel Jurgens void *lsm_data) 3988f408ab6SDaniel Jurgens { 3998f408ab6SDaniel Jurgens if (event != LSM_POLICY_CHANGE) 4008f408ab6SDaniel Jurgens return NOTIFY_DONE; 4018f408ab6SDaniel Jurgens 4028f408ab6SDaniel Jurgens schedule_work(&ib_policy_change_work); 4038f408ab6SDaniel Jurgens 4048f408ab6SDaniel Jurgens return NOTIFY_OK; 4058f408ab6SDaniel Jurgens } 4068f408ab6SDaniel Jurgens 4071da177e4SLinus Torvalds /** 408ecc82c53SLeon Romanovsky * __dev_new_index - allocate an device index 409ecc82c53SLeon Romanovsky * 410ecc82c53SLeon Romanovsky * Returns a suitable unique value for a new device interface 411ecc82c53SLeon Romanovsky * number. It assumes that there are less than 2^32-1 ib devices 412ecc82c53SLeon Romanovsky * will be present in the system. 413ecc82c53SLeon Romanovsky */ 414ecc82c53SLeon Romanovsky static u32 __dev_new_index(void) 415ecc82c53SLeon Romanovsky { 416ecc82c53SLeon Romanovsky /* 417ecc82c53SLeon Romanovsky * The device index to allow stable naming. 418ecc82c53SLeon Romanovsky * Similar to struct net -> ifindex. 419ecc82c53SLeon Romanovsky */ 420ecc82c53SLeon Romanovsky static u32 index; 421ecc82c53SLeon Romanovsky 422ecc82c53SLeon Romanovsky for (;;) { 423ecc82c53SLeon Romanovsky if (!(++index)) 424ecc82c53SLeon Romanovsky index = 1; 425ecc82c53SLeon Romanovsky 426ecc82c53SLeon Romanovsky if (!__ib_device_get_by_index(index)) 427ecc82c53SLeon Romanovsky return index; 428ecc82c53SLeon Romanovsky } 429ecc82c53SLeon Romanovsky } 430ecc82c53SLeon Romanovsky 431ecc82c53SLeon Romanovsky /** 4321da177e4SLinus Torvalds * ib_register_device - Register an IB device with IB core 4331da177e4SLinus Torvalds * @device:Device to register 4341da177e4SLinus Torvalds * 4351da177e4SLinus Torvalds * Low-level drivers use ib_register_device() to register their 4361da177e4SLinus Torvalds * devices with the IB core. All registered clients will receive a 4371da177e4SLinus Torvalds * callback for each device that is added. @device must be allocated 4381da177e4SLinus Torvalds * with ib_alloc_device(). 4391da177e4SLinus Torvalds */ 4409a6edb60SRalph Campbell int ib_register_device(struct ib_device *device, 4419a6edb60SRalph Campbell int (*port_callback)(struct ib_device *, 4429a6edb60SRalph Campbell u8, struct kobject *)) 4431da177e4SLinus Torvalds { 4441da177e4SLinus Torvalds int ret; 445b8071ad8SDoug Ledford struct ib_client *client; 4463e153a93SIra Weiny struct ib_udata uhw = {.outlen = 0, .inlen = 0}; 44799db9494SBart Van Assche struct device *parent = device->dev.parent; 4481da177e4SLinus Torvalds 44999db9494SBart Van Assche WARN_ON_ONCE(!parent); 4500957c29fSBart Van Assche WARN_ON_ONCE(device->dma_device); 4510957c29fSBart Van Assche if (device->dev.dma_ops) { 4520957c29fSBart Van Assche /* 4530957c29fSBart Van Assche * The caller provided custom DMA operations. Copy the 4540957c29fSBart Van Assche * DMA-related fields that are used by e.g. dma_alloc_coherent() 4550957c29fSBart Van Assche * into device->dev. 4560957c29fSBart Van Assche */ 4570957c29fSBart Van Assche device->dma_device = &device->dev; 45899db9494SBart Van Assche if (!device->dev.dma_mask) 45999db9494SBart Van Assche device->dev.dma_mask = parent->dma_mask; 46099db9494SBart Van Assche if (!device->dev.coherent_dma_mask) 4610957c29fSBart Van Assche device->dev.coherent_dma_mask = 4620957c29fSBart Van Assche parent->coherent_dma_mask; 4630957c29fSBart Van Assche } else { 4640957c29fSBart Van Assche /* 4650957c29fSBart Van Assche * The caller did not provide custom DMA operations. Use the 4660957c29fSBart Van Assche * DMA mapping operations of the parent device. 4670957c29fSBart Van Assche */ 4680957c29fSBart Van Assche device->dma_device = parent; 4690957c29fSBart Van Assche } 4701da177e4SLinus Torvalds 47195ed644fSIngo Molnar mutex_lock(&device_mutex); 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds if (strchr(device->name, '%')) { 4741da177e4SLinus Torvalds ret = alloc_name(device->name); 4751da177e4SLinus Torvalds if (ret) 4761da177e4SLinus Torvalds goto out; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds if (ib_device_check_mandatory(device)) { 4801da177e4SLinus Torvalds ret = -EINVAL; 4811da177e4SLinus Torvalds goto out; 4821da177e4SLinus Torvalds } 4831da177e4SLinus Torvalds 4847738613eSIra Weiny ret = read_port_immutable(device); 4855eb620c8SYosef Etigin if (ret) { 486aba25a3eSParav Pandit pr_warn("Couldn't create per port immutable data %s\n", 4875eb620c8SYosef Etigin device->name); 4885eb620c8SYosef Etigin goto out; 4895eb620c8SYosef Etigin } 4905eb620c8SYosef Etigin 491d291f1a6SDaniel Jurgens ret = setup_port_pkey_list(device); 492d291f1a6SDaniel Jurgens if (ret) { 493d291f1a6SDaniel Jurgens pr_warn("Couldn't create per port_pkey_list\n"); 494d291f1a6SDaniel Jurgens goto out; 495d291f1a6SDaniel Jurgens } 496d291f1a6SDaniel Jurgens 49703db3a2dSMatan Barak ret = ib_cache_setup_one(device); 49803db3a2dSMatan Barak if (ret) { 499aba25a3eSParav Pandit pr_warn("Couldn't set up InfiniBand P_Key/GID cache\n"); 5004be3a4faSParav Pandit goto port_cleanup; 50103db3a2dSMatan Barak } 50203db3a2dSMatan Barak 50343579b5fSParav Pandit ret = ib_device_register_rdmacg(device); 50443579b5fSParav Pandit if (ret) { 50543579b5fSParav Pandit pr_warn("Couldn't register device with rdma cgroup\n"); 5064be3a4faSParav Pandit goto cache_cleanup; 50743579b5fSParav Pandit } 50843579b5fSParav Pandit 5093e153a93SIra Weiny memset(&device->attrs, 0, sizeof(device->attrs)); 5103e153a93SIra Weiny ret = device->query_device(device, &device->attrs, &uhw); 5113e153a93SIra Weiny if (ret) { 512aba25a3eSParav Pandit pr_warn("Couldn't query the device attributes\n"); 5134be3a4faSParav Pandit goto cache_cleanup; 5143e153a93SIra Weiny } 5153e153a93SIra Weiny 5169a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 5171da177e4SLinus Torvalds if (ret) { 518aba25a3eSParav Pandit pr_warn("Couldn't register device %s with driver model\n", 5191da177e4SLinus Torvalds device->name); 5204be3a4faSParav Pandit goto cache_cleanup; 5211da177e4SLinus Torvalds } 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 526b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 5271da177e4SLinus Torvalds client->add(device); 5281da177e4SLinus Torvalds 529ecc82c53SLeon Romanovsky device->index = __dev_new_index(); 5305aa44bb9SHaggai Eran down_write(&lists_rwsem); 5315aa44bb9SHaggai Eran list_add_tail(&device->core_list, &device_list); 5325aa44bb9SHaggai Eran up_write(&lists_rwsem); 5334be3a4faSParav Pandit mutex_unlock(&device_mutex); 5344be3a4faSParav Pandit return 0; 5354be3a4faSParav Pandit 5364be3a4faSParav Pandit cache_cleanup: 5374be3a4faSParav Pandit ib_cache_cleanup_one(device); 5384be3a4faSParav Pandit ib_cache_release_one(device); 5394be3a4faSParav Pandit port_cleanup: 5404be3a4faSParav Pandit kfree(device->port_immutable); 5411da177e4SLinus Torvalds out: 54295ed644fSIngo Molnar mutex_unlock(&device_mutex); 5431da177e4SLinus Torvalds return ret; 5441da177e4SLinus Torvalds } 5451da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds /** 5481da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 5491da177e4SLinus Torvalds * @device:Device to unregister 5501da177e4SLinus Torvalds * 5511da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 5521da177e4SLinus Torvalds */ 5531da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 5541da177e4SLinus Torvalds { 5551da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 5561da177e4SLinus Torvalds unsigned long flags; 5571da177e4SLinus Torvalds 55895ed644fSIngo Molnar mutex_lock(&device_mutex); 5591da177e4SLinus Torvalds 5605aa44bb9SHaggai Eran down_write(&lists_rwsem); 5615aa44bb9SHaggai Eran list_del(&device->core_list); 5627c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 5637c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 5647c1eb45aSHaggai Eran context->going_down = true; 5657c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 5667c1eb45aSHaggai Eran downgrade_write(&lists_rwsem); 5675aa44bb9SHaggai Eran 5687c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, 5697c1eb45aSHaggai Eran list) { 5707c1eb45aSHaggai Eran if (context->client->remove) 5717c1eb45aSHaggai Eran context->client->remove(device, context->data); 5727c1eb45aSHaggai Eran } 5737c1eb45aSHaggai Eran up_read(&lists_rwsem); 5741da177e4SLinus Torvalds 57543579b5fSParav Pandit ib_device_unregister_rdmacg(device); 5769206dff1SRoland Dreier ib_device_unregister_sysfs(device); 57706f8174aSShiraz Saleem 57806f8174aSShiraz Saleem mutex_unlock(&device_mutex); 57906f8174aSShiraz Saleem 58003db3a2dSMatan Barak ib_cache_cleanup_one(device); 5819206dff1SRoland Dreier 582d291f1a6SDaniel Jurgens ib_security_destroy_port_pkey_list(device); 583d291f1a6SDaniel Jurgens kfree(device->port_pkey_list); 584d291f1a6SDaniel Jurgens 5857c1eb45aSHaggai Eran down_write(&lists_rwsem); 5861da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 5871da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 5881da177e4SLinus Torvalds kfree(context); 5891da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 5907c1eb45aSHaggai Eran up_write(&lists_rwsem); 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 5951da177e4SLinus Torvalds 5961da177e4SLinus Torvalds /** 5971da177e4SLinus Torvalds * ib_register_client - Register an IB client 5981da177e4SLinus Torvalds * @client:Client to register 5991da177e4SLinus Torvalds * 6001da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 6011da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 6021da177e4SLinus Torvalds * device is added, each registered client's add method will be called 6031da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 6041da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 6051da177e4SLinus Torvalds * order that clients were registered). In addition, when 6061da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 6071da177e4SLinus Torvalds * callback for all devices already registered. 6081da177e4SLinus Torvalds */ 6091da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 6101da177e4SLinus Torvalds { 6111da177e4SLinus Torvalds struct ib_device *device; 6121da177e4SLinus Torvalds 61395ed644fSIngo Molnar mutex_lock(&device_mutex); 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 616b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 6171da177e4SLinus Torvalds client->add(device); 6181da177e4SLinus Torvalds 6195aa44bb9SHaggai Eran down_write(&lists_rwsem); 6205aa44bb9SHaggai Eran list_add_tail(&client->list, &client_list); 6215aa44bb9SHaggai Eran up_write(&lists_rwsem); 6225aa44bb9SHaggai Eran 62395ed644fSIngo Molnar mutex_unlock(&device_mutex); 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds return 0; 6261da177e4SLinus Torvalds } 6271da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds /** 6301da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 6311da177e4SLinus Torvalds * @client:Client to unregister 6321da177e4SLinus Torvalds * 6331da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 6341da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 6351da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 6361da177e4SLinus Torvalds */ 6371da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 6381da177e4SLinus Torvalds { 6391da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 6401da177e4SLinus Torvalds struct ib_device *device; 6411da177e4SLinus Torvalds unsigned long flags; 6421da177e4SLinus Torvalds 64395ed644fSIngo Molnar mutex_lock(&device_mutex); 6441da177e4SLinus Torvalds 6455aa44bb9SHaggai Eran down_write(&lists_rwsem); 6465aa44bb9SHaggai Eran list_del(&client->list); 6475aa44bb9SHaggai Eran up_write(&lists_rwsem); 6485aa44bb9SHaggai Eran 6491da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 6507c1eb45aSHaggai Eran struct ib_client_data *found_context = NULL; 6511da177e4SLinus Torvalds 6527c1eb45aSHaggai Eran down_write(&lists_rwsem); 6531da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 6541da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 6551da177e4SLinus Torvalds if (context->client == client) { 6567c1eb45aSHaggai Eran context->going_down = true; 6577c1eb45aSHaggai Eran found_context = context; 6587c1eb45aSHaggai Eran break; 6591da177e4SLinus Torvalds } 6601da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 6617c1eb45aSHaggai Eran up_write(&lists_rwsem); 6627c1eb45aSHaggai Eran 6637c1eb45aSHaggai Eran if (client->remove) 6647c1eb45aSHaggai Eran client->remove(device, found_context ? 6657c1eb45aSHaggai Eran found_context->data : NULL); 6667c1eb45aSHaggai Eran 6677c1eb45aSHaggai Eran if (!found_context) { 6687c1eb45aSHaggai Eran pr_warn("No client context found for %s/%s\n", 6697c1eb45aSHaggai Eran device->name, client->name); 6707c1eb45aSHaggai Eran continue; 6717c1eb45aSHaggai Eran } 6727c1eb45aSHaggai Eran 6737c1eb45aSHaggai Eran down_write(&lists_rwsem); 6747c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 6757c1eb45aSHaggai Eran list_del(&found_context->list); 6767c1eb45aSHaggai Eran kfree(found_context); 6777c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 6787c1eb45aSHaggai Eran up_write(&lists_rwsem); 6791da177e4SLinus Torvalds } 6801da177e4SLinus Torvalds 68195ed644fSIngo Molnar mutex_unlock(&device_mutex); 6821da177e4SLinus Torvalds } 6831da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds /** 6861da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 6871da177e4SLinus Torvalds * @device:Device to get context for 6881da177e4SLinus Torvalds * @client:Client to get context for 6891da177e4SLinus Torvalds * 6901da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 6911da177e4SLinus Torvalds * ib_set_client_data(). 6921da177e4SLinus Torvalds */ 6931da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 6941da177e4SLinus Torvalds { 6951da177e4SLinus Torvalds struct ib_client_data *context; 6961da177e4SLinus Torvalds void *ret = NULL; 6971da177e4SLinus Torvalds unsigned long flags; 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 7001da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 7011da177e4SLinus Torvalds if (context->client == client) { 7021da177e4SLinus Torvalds ret = context->data; 7031da177e4SLinus Torvalds break; 7041da177e4SLinus Torvalds } 7051da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7061da177e4SLinus Torvalds 7071da177e4SLinus Torvalds return ret; 7081da177e4SLinus Torvalds } 7091da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds /** 7129cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 7131da177e4SLinus Torvalds * @device:Device to set context for 7141da177e4SLinus Torvalds * @client:Client to set context for 7151da177e4SLinus Torvalds * @data:Context to set 7161da177e4SLinus Torvalds * 7171da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 7181da177e4SLinus Torvalds * ib_get_client_data(). 7191da177e4SLinus Torvalds */ 7201da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 7211da177e4SLinus Torvalds void *data) 7221da177e4SLinus Torvalds { 7231da177e4SLinus Torvalds struct ib_client_data *context; 7241da177e4SLinus Torvalds unsigned long flags; 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 7271da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 7281da177e4SLinus Torvalds if (context->client == client) { 7291da177e4SLinus Torvalds context->data = data; 7301da177e4SLinus Torvalds goto out; 7311da177e4SLinus Torvalds } 7321da177e4SLinus Torvalds 733aba25a3eSParav Pandit pr_warn("No client context found for %s/%s\n", 7341da177e4SLinus Torvalds device->name, client->name); 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds out: 7371da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7381da177e4SLinus Torvalds } 7391da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 7401da177e4SLinus Torvalds 7411da177e4SLinus Torvalds /** 7421da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 7431da177e4SLinus Torvalds * @event_handler:Handler to register 7441da177e4SLinus Torvalds * 7451da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 7461da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 7471da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 7481da177e4SLinus Torvalds * callback may occur in interrupt context. 7491da177e4SLinus Torvalds */ 750dcc9881eSLeon Romanovsky void ib_register_event_handler(struct ib_event_handler *event_handler) 7511da177e4SLinus Torvalds { 7521da177e4SLinus Torvalds unsigned long flags; 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 7551da177e4SLinus Torvalds list_add_tail(&event_handler->list, 7561da177e4SLinus Torvalds &event_handler->device->event_handler_list); 7571da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 7581da177e4SLinus Torvalds } 7591da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds /** 7621da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 7631da177e4SLinus Torvalds * @event_handler:Handler to unregister 7641da177e4SLinus Torvalds * 7651da177e4SLinus Torvalds * Unregister an event handler registered with 7661da177e4SLinus Torvalds * ib_register_event_handler(). 7671da177e4SLinus Torvalds */ 768dcc9881eSLeon Romanovsky void ib_unregister_event_handler(struct ib_event_handler *event_handler) 7691da177e4SLinus Torvalds { 7701da177e4SLinus Torvalds unsigned long flags; 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 7731da177e4SLinus Torvalds list_del(&event_handler->list); 7741da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 7751da177e4SLinus Torvalds } 7761da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 7771da177e4SLinus Torvalds 7781da177e4SLinus Torvalds /** 7791da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 7801da177e4SLinus Torvalds * @event:Event to dispatch 7811da177e4SLinus Torvalds * 7821da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 7831da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 7841da177e4SLinus Torvalds * occurs. 7851da177e4SLinus Torvalds */ 7861da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 7871da177e4SLinus Torvalds { 7881da177e4SLinus Torvalds unsigned long flags; 7891da177e4SLinus Torvalds struct ib_event_handler *handler; 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 7941da177e4SLinus Torvalds handler->handler(handler, event); 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 7971da177e4SLinus Torvalds } 7981da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds /** 8011da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 8021da177e4SLinus Torvalds * @device:Device to query 8031da177e4SLinus Torvalds * @port_num:Port number to query 8041da177e4SLinus Torvalds * @port_attr:Port attributes 8051da177e4SLinus Torvalds * 8061da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 8071da177e4SLinus Torvalds * @port_attr pointer. 8081da177e4SLinus Torvalds */ 8091da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 8101da177e4SLinus Torvalds u8 port_num, 8111da177e4SLinus Torvalds struct ib_port_attr *port_attr) 8121da177e4SLinus Torvalds { 813fad61ad4SEli Cohen union ib_gid gid; 814fad61ad4SEli Cohen int err; 815fad61ad4SEli Cohen 81624dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 817116c0074SRoland Dreier return -EINVAL; 818116c0074SRoland Dreier 819fad61ad4SEli Cohen memset(port_attr, 0, sizeof(*port_attr)); 820fad61ad4SEli Cohen err = device->query_port(device, port_num, port_attr); 821fad61ad4SEli Cohen if (err || port_attr->subnet_prefix) 822fad61ad4SEli Cohen return err; 823fad61ad4SEli Cohen 824d7012467SEli Cohen if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) 825d7012467SEli Cohen return 0; 826d7012467SEli Cohen 827fad61ad4SEli Cohen err = ib_query_gid(device, port_num, 0, &gid, NULL); 828fad61ad4SEli Cohen if (err) 829fad61ad4SEli Cohen return err; 830fad61ad4SEli Cohen 831fad61ad4SEli Cohen port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); 832fad61ad4SEli Cohen return 0; 8331da177e4SLinus Torvalds } 8341da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds /** 8371da177e4SLinus Torvalds * ib_query_gid - Get GID table entry 8381da177e4SLinus Torvalds * @device:Device to query 8391da177e4SLinus Torvalds * @port_num:Port number to query 8401da177e4SLinus Torvalds * @index:GID table index to query 8411da177e4SLinus Torvalds * @gid:Returned GID 84255ee3ab2SMatan Barak * @attr: Returned GID attributes related to this GID index (only in RoCE). 84355ee3ab2SMatan Barak * NULL means ignore. 8441da177e4SLinus Torvalds * 8451da177e4SLinus Torvalds * ib_query_gid() fetches the specified GID table entry. 8461da177e4SLinus Torvalds */ 8471da177e4SLinus Torvalds int ib_query_gid(struct ib_device *device, 84855ee3ab2SMatan Barak u8 port_num, int index, union ib_gid *gid, 84955ee3ab2SMatan Barak struct ib_gid_attr *attr) 8501da177e4SLinus Torvalds { 85103db3a2dSMatan Barak if (rdma_cap_roce_gid_table(device, port_num)) 85255ee3ab2SMatan Barak return ib_get_cached_gid(device, port_num, index, gid, attr); 85355ee3ab2SMatan Barak 85455ee3ab2SMatan Barak if (attr) 85555ee3ab2SMatan Barak return -EINVAL; 85603db3a2dSMatan Barak 8571da177e4SLinus Torvalds return device->query_gid(device, port_num, index, gid); 8581da177e4SLinus Torvalds } 8591da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_gid); 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds /** 86203db3a2dSMatan Barak * ib_enum_roce_netdev - enumerate all RoCE ports 86303db3a2dSMatan Barak * @ib_dev : IB device we want to query 86403db3a2dSMatan Barak * @filter: Should we call the callback? 86503db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 86603db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 86703db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 86803db3a2dSMatan Barak * 86903db3a2dSMatan Barak * Enumerates all of the physical RoCE ports of ib_dev 87003db3a2dSMatan Barak * which are related to netdevice and calls callback() on each 87103db3a2dSMatan Barak * device for which filter() function returns non zero. 87203db3a2dSMatan Barak */ 87303db3a2dSMatan Barak void ib_enum_roce_netdev(struct ib_device *ib_dev, 87403db3a2dSMatan Barak roce_netdev_filter filter, 87503db3a2dSMatan Barak void *filter_cookie, 87603db3a2dSMatan Barak roce_netdev_callback cb, 87703db3a2dSMatan Barak void *cookie) 87803db3a2dSMatan Barak { 87903db3a2dSMatan Barak u8 port; 88003db3a2dSMatan Barak 88103db3a2dSMatan Barak for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); 88203db3a2dSMatan Barak port++) 88303db3a2dSMatan Barak if (rdma_protocol_roce(ib_dev, port)) { 88403db3a2dSMatan Barak struct net_device *idev = NULL; 88503db3a2dSMatan Barak 88603db3a2dSMatan Barak if (ib_dev->get_netdev) 88703db3a2dSMatan Barak idev = ib_dev->get_netdev(ib_dev, port); 88803db3a2dSMatan Barak 88903db3a2dSMatan Barak if (idev && 89003db3a2dSMatan Barak idev->reg_state >= NETREG_UNREGISTERED) { 89103db3a2dSMatan Barak dev_put(idev); 89203db3a2dSMatan Barak idev = NULL; 89303db3a2dSMatan Barak } 89403db3a2dSMatan Barak 89503db3a2dSMatan Barak if (filter(ib_dev, port, idev, filter_cookie)) 89603db3a2dSMatan Barak cb(ib_dev, port, idev, cookie); 89703db3a2dSMatan Barak 89803db3a2dSMatan Barak if (idev) 89903db3a2dSMatan Barak dev_put(idev); 90003db3a2dSMatan Barak } 90103db3a2dSMatan Barak } 90203db3a2dSMatan Barak 90303db3a2dSMatan Barak /** 90403db3a2dSMatan Barak * ib_enum_all_roce_netdevs - enumerate all RoCE devices 90503db3a2dSMatan Barak * @filter: Should we call the callback? 90603db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 90703db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 90803db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 90903db3a2dSMatan Barak * 91003db3a2dSMatan Barak * Enumerates all RoCE devices' physical ports which are related 91103db3a2dSMatan Barak * to netdevices and calls callback() on each device for which 91203db3a2dSMatan Barak * filter() function returns non zero. 91303db3a2dSMatan Barak */ 91403db3a2dSMatan Barak void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 91503db3a2dSMatan Barak void *filter_cookie, 91603db3a2dSMatan Barak roce_netdev_callback cb, 91703db3a2dSMatan Barak void *cookie) 91803db3a2dSMatan Barak { 91903db3a2dSMatan Barak struct ib_device *dev; 92003db3a2dSMatan Barak 92103db3a2dSMatan Barak down_read(&lists_rwsem); 92203db3a2dSMatan Barak list_for_each_entry(dev, &device_list, core_list) 92303db3a2dSMatan Barak ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); 92403db3a2dSMatan Barak up_read(&lists_rwsem); 92503db3a2dSMatan Barak } 92603db3a2dSMatan Barak 92703db3a2dSMatan Barak /** 9288030c835SLeon Romanovsky * ib_enum_all_devs - enumerate all ib_devices 9298030c835SLeon Romanovsky * @cb: Callback to call for each found ib_device 9308030c835SLeon Romanovsky * 9318030c835SLeon Romanovsky * Enumerates all ib_devices and calls callback() on each device. 9328030c835SLeon Romanovsky */ 9338030c835SLeon Romanovsky int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 9348030c835SLeon Romanovsky struct netlink_callback *cb) 9358030c835SLeon Romanovsky { 9368030c835SLeon Romanovsky struct ib_device *dev; 9378030c835SLeon Romanovsky unsigned int idx = 0; 9388030c835SLeon Romanovsky int ret = 0; 9398030c835SLeon Romanovsky 9408030c835SLeon Romanovsky down_read(&lists_rwsem); 9418030c835SLeon Romanovsky list_for_each_entry(dev, &device_list, core_list) { 9428030c835SLeon Romanovsky ret = nldev_cb(dev, skb, cb, idx); 9438030c835SLeon Romanovsky if (ret) 9448030c835SLeon Romanovsky break; 9458030c835SLeon Romanovsky idx++; 9468030c835SLeon Romanovsky } 9478030c835SLeon Romanovsky 9488030c835SLeon Romanovsky up_read(&lists_rwsem); 9498030c835SLeon Romanovsky return ret; 9508030c835SLeon Romanovsky } 9518030c835SLeon Romanovsky 9528030c835SLeon Romanovsky /** 9531da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 9541da177e4SLinus Torvalds * @device:Device to query 9551da177e4SLinus Torvalds * @port_num:Port number to query 9561da177e4SLinus Torvalds * @index:P_Key table index to query 9571da177e4SLinus Torvalds * @pkey:Returned P_Key 9581da177e4SLinus Torvalds * 9591da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 9601da177e4SLinus Torvalds */ 9611da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 9621da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 9631da177e4SLinus Torvalds { 9641da177e4SLinus Torvalds return device->query_pkey(device, port_num, index, pkey); 9651da177e4SLinus Torvalds } 9661da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds /** 9691da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 9701da177e4SLinus Torvalds * @device:Device to modify 9711da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 9721da177e4SLinus Torvalds * @device_modify:New attribute values 9731da177e4SLinus Torvalds * 9741da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 9751da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 9761da177e4SLinus Torvalds */ 9771da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 9781da177e4SLinus Torvalds int device_modify_mask, 9791da177e4SLinus Torvalds struct ib_device_modify *device_modify) 9801da177e4SLinus Torvalds { 98110e1b54bSBart Van Assche if (!device->modify_device) 98210e1b54bSBart Van Assche return -ENOSYS; 98310e1b54bSBart Van Assche 9841da177e4SLinus Torvalds return device->modify_device(device, device_modify_mask, 9851da177e4SLinus Torvalds device_modify); 9861da177e4SLinus Torvalds } 9871da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds /** 9901da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 9911da177e4SLinus Torvalds * @device: The device to modify. 9921da177e4SLinus Torvalds * @port_num: The number of the port to modify. 9931da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 9941da177e4SLinus Torvalds * to change. 9951da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 9961da177e4SLinus Torvalds * 9971da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 9981da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 9991da177e4SLinus Torvalds */ 10001da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 10011da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 10021da177e4SLinus Torvalds struct ib_port_modify *port_modify) 10031da177e4SLinus Torvalds { 100461e0962dSSelvin Xavier int rc; 100510e1b54bSBart Van Assche 100624dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 1007116c0074SRoland Dreier return -EINVAL; 1008116c0074SRoland Dreier 100961e0962dSSelvin Xavier if (device->modify_port) 101061e0962dSSelvin Xavier rc = device->modify_port(device, port_num, port_modify_mask, 10111da177e4SLinus Torvalds port_modify); 101261e0962dSSelvin Xavier else 101361e0962dSSelvin Xavier rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; 101461e0962dSSelvin Xavier return rc; 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 10171da177e4SLinus Torvalds 10185eb620c8SYosef Etigin /** 10195eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 1020dbb12562SParav Pandit * a specified GID value occurs. Its searches only for IB link layer. 10215eb620c8SYosef Etigin * @device: The device to query. 10225eb620c8SYosef Etigin * @gid: The GID value to search for. 102355ee3ab2SMatan Barak * @ndev: The ndev related to the GID to search for. 10245eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 10255eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 10265eb620c8SYosef Etigin * parameter may be NULL. 10275eb620c8SYosef Etigin */ 10285eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 1029dbb12562SParav Pandit struct net_device *ndev, u8 *port_num, u16 *index) 10305eb620c8SYosef Etigin { 10315eb620c8SYosef Etigin union ib_gid tmp_gid; 10325eb620c8SYosef Etigin int ret, port, i; 10335eb620c8SYosef Etigin 10340cf18d77SIra Weiny for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { 1035dbb12562SParav Pandit if (rdma_cap_roce_gid_table(device, port)) 1036b39ffa1dSMatan Barak continue; 1037b39ffa1dSMatan Barak 10387738613eSIra Weiny for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { 103955ee3ab2SMatan Barak ret = ib_query_gid(device, port, i, &tmp_gid, NULL); 10405eb620c8SYosef Etigin if (ret) 10415eb620c8SYosef Etigin return ret; 10425eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 10435eb620c8SYosef Etigin *port_num = port; 10445eb620c8SYosef Etigin if (index) 10455eb620c8SYosef Etigin *index = i; 10465eb620c8SYosef Etigin return 0; 10475eb620c8SYosef Etigin } 10485eb620c8SYosef Etigin } 10495eb620c8SYosef Etigin } 10505eb620c8SYosef Etigin 10515eb620c8SYosef Etigin return -ENOENT; 10525eb620c8SYosef Etigin } 10535eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 10545eb620c8SYosef Etigin 10555eb620c8SYosef Etigin /** 10565eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 10575eb620c8SYosef Etigin * PKey value occurs. 10585eb620c8SYosef Etigin * @device: The device to query. 10595eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 10605eb620c8SYosef Etigin * @pkey: The PKey value to search for. 10615eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 10625eb620c8SYosef Etigin */ 10635eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 10645eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 10655eb620c8SYosef Etigin { 10665eb620c8SYosef Etigin int ret, i; 10675eb620c8SYosef Etigin u16 tmp_pkey; 1068ff7166c4SJack Morgenstein int partial_ix = -1; 10695eb620c8SYosef Etigin 10707738613eSIra Weiny for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { 10715eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 10725eb620c8SYosef Etigin if (ret) 10735eb620c8SYosef Etigin return ret; 107436026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 1075ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 1076ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 10775eb620c8SYosef Etigin *index = i; 10785eb620c8SYosef Etigin return 0; 10795eb620c8SYosef Etigin } 1080ff7166c4SJack Morgenstein if (partial_ix < 0) 1081ff7166c4SJack Morgenstein partial_ix = i; 1082ff7166c4SJack Morgenstein } 10835eb620c8SYosef Etigin } 10845eb620c8SYosef Etigin 1085ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 1086ff7166c4SJack Morgenstein if (partial_ix >= 0) { 1087ff7166c4SJack Morgenstein *index = partial_ix; 1088ff7166c4SJack Morgenstein return 0; 1089ff7166c4SJack Morgenstein } 10905eb620c8SYosef Etigin return -ENOENT; 10915eb620c8SYosef Etigin } 10925eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 10935eb620c8SYosef Etigin 10949268f72dSYotam Kenneth /** 10959268f72dSYotam Kenneth * ib_get_net_dev_by_params() - Return the appropriate net_dev 10969268f72dSYotam Kenneth * for a received CM request 10979268f72dSYotam Kenneth * @dev: An RDMA device on which the request has been received. 10989268f72dSYotam Kenneth * @port: Port number on the RDMA device. 10999268f72dSYotam Kenneth * @pkey: The Pkey the request came on. 11009268f72dSYotam Kenneth * @gid: A GID that the net_dev uses to communicate. 11019268f72dSYotam Kenneth * @addr: Contains the IP address that the request specified as its 11029268f72dSYotam Kenneth * destination. 11039268f72dSYotam Kenneth */ 11049268f72dSYotam Kenneth struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, 11059268f72dSYotam Kenneth u8 port, 11069268f72dSYotam Kenneth u16 pkey, 11079268f72dSYotam Kenneth const union ib_gid *gid, 11089268f72dSYotam Kenneth const struct sockaddr *addr) 11099268f72dSYotam Kenneth { 11109268f72dSYotam Kenneth struct net_device *net_dev = NULL; 11119268f72dSYotam Kenneth struct ib_client_data *context; 11129268f72dSYotam Kenneth 11139268f72dSYotam Kenneth if (!rdma_protocol_ib(dev, port)) 11149268f72dSYotam Kenneth return NULL; 11159268f72dSYotam Kenneth 11169268f72dSYotam Kenneth down_read(&lists_rwsem); 11179268f72dSYotam Kenneth 11189268f72dSYotam Kenneth list_for_each_entry(context, &dev->client_data_list, list) { 11199268f72dSYotam Kenneth struct ib_client *client = context->client; 11209268f72dSYotam Kenneth 11219268f72dSYotam Kenneth if (context->going_down) 11229268f72dSYotam Kenneth continue; 11239268f72dSYotam Kenneth 11249268f72dSYotam Kenneth if (client->get_net_dev_by_params) { 11259268f72dSYotam Kenneth net_dev = client->get_net_dev_by_params(dev, port, pkey, 11269268f72dSYotam Kenneth gid, addr, 11279268f72dSYotam Kenneth context->data); 11289268f72dSYotam Kenneth if (net_dev) 11299268f72dSYotam Kenneth break; 11309268f72dSYotam Kenneth } 11319268f72dSYotam Kenneth } 11329268f72dSYotam Kenneth 11339268f72dSYotam Kenneth up_read(&lists_rwsem); 11349268f72dSYotam Kenneth 11359268f72dSYotam Kenneth return net_dev; 11369268f72dSYotam Kenneth } 11379268f72dSYotam Kenneth EXPORT_SYMBOL(ib_get_net_dev_by_params); 11389268f72dSYotam Kenneth 11393250b4dbSLeon Romanovsky static const struct rdma_nl_cbs ibnl_ls_cb_table[] = { 1140735c631aSMark Bloch [RDMA_NL_LS_OP_RESOLVE] = { 1141647c75acSLeon Romanovsky .doit = ib_nl_handle_resolve_resp, 1142e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1143e3a2b93dSLeon Romanovsky }, 1144735c631aSMark Bloch [RDMA_NL_LS_OP_SET_TIMEOUT] = { 1145647c75acSLeon Romanovsky .doit = ib_nl_handle_set_timeout, 1146e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1147e3a2b93dSLeon Romanovsky }, 1148ae43f828SMark Bloch [RDMA_NL_LS_OP_IP_RESOLVE] = { 1149647c75acSLeon Romanovsky .doit = ib_nl_handle_ip_res_resp, 1150e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1151e3a2b93dSLeon Romanovsky }, 1152735c631aSMark Bloch }; 1153735c631aSMark Bloch 11541da177e4SLinus Torvalds static int __init ib_core_init(void) 11551da177e4SLinus Torvalds { 11561da177e4SLinus Torvalds int ret; 11571da177e4SLinus Torvalds 1158f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 1159f0626710STejun Heo if (!ib_wq) 1160f0626710STejun Heo return -ENOMEM; 1161f0626710STejun Heo 116214d3a3b2SChristoph Hellwig ib_comp_wq = alloc_workqueue("ib-comp-wq", 1163b7363e67SSagi Grimberg WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); 116414d3a3b2SChristoph Hellwig if (!ib_comp_wq) { 116514d3a3b2SChristoph Hellwig ret = -ENOMEM; 116614d3a3b2SChristoph Hellwig goto err; 116714d3a3b2SChristoph Hellwig } 116814d3a3b2SChristoph Hellwig 116955aeed06SJason Gunthorpe ret = class_register(&ib_class); 1170fd75c789SNir Muchtar if (ret) { 1171aba25a3eSParav Pandit pr_warn("Couldn't create InfiniBand device class\n"); 117214d3a3b2SChristoph Hellwig goto err_comp; 1173fd75c789SNir Muchtar } 11741da177e4SLinus Torvalds 1175c9901724SLeon Romanovsky ret = rdma_nl_init(); 11761da177e4SLinus Torvalds if (ret) { 1177c9901724SLeon Romanovsky pr_warn("Couldn't init IB netlink interface: err %d\n", ret); 1178fd75c789SNir Muchtar goto err_sysfs; 11791da177e4SLinus Torvalds } 11801da177e4SLinus Torvalds 1181e3f20f02SLeon Romanovsky ret = addr_init(); 1182e3f20f02SLeon Romanovsky if (ret) { 1183e3f20f02SLeon Romanovsky pr_warn("Could't init IB address resolution\n"); 1184e3f20f02SLeon Romanovsky goto err_ibnl; 1185e3f20f02SLeon Romanovsky } 1186e3f20f02SLeon Romanovsky 11874c2cb422SMark Bloch ret = ib_mad_init(); 11884c2cb422SMark Bloch if (ret) { 11894c2cb422SMark Bloch pr_warn("Couldn't init IB MAD\n"); 11904c2cb422SMark Bloch goto err_addr; 11914c2cb422SMark Bloch } 11924c2cb422SMark Bloch 1193c2e49c92SMark Bloch ret = ib_sa_init(); 1194c2e49c92SMark Bloch if (ret) { 1195c2e49c92SMark Bloch pr_warn("Couldn't init SA\n"); 1196c2e49c92SMark Bloch goto err_mad; 1197c2e49c92SMark Bloch } 1198c2e49c92SMark Bloch 11998f408ab6SDaniel Jurgens ret = register_lsm_notifier(&ibdev_lsm_nb); 12008f408ab6SDaniel Jurgens if (ret) { 12018f408ab6SDaniel Jurgens pr_warn("Couldn't register LSM notifier. ret %d\n", ret); 1202c9901724SLeon Romanovsky goto err_sa; 12038f408ab6SDaniel Jurgens } 12048f408ab6SDaniel Jurgens 12056c80b41aSLeon Romanovsky nldev_init(); 1206c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); 120703db3a2dSMatan Barak ib_cache_setup(); 1208b2cbae2cSRoland Dreier 1209fd75c789SNir Muchtar return 0; 1210fd75c789SNir Muchtar 1211735c631aSMark Bloch err_sa: 1212735c631aSMark Bloch ib_sa_cleanup(); 1213c2e49c92SMark Bloch err_mad: 1214c2e49c92SMark Bloch ib_mad_cleanup(); 12154c2cb422SMark Bloch err_addr: 12164c2cb422SMark Bloch addr_cleanup(); 1217e3f20f02SLeon Romanovsky err_ibnl: 1218c9901724SLeon Romanovsky rdma_nl_exit(); 1219fd75c789SNir Muchtar err_sysfs: 122055aeed06SJason Gunthorpe class_unregister(&ib_class); 122114d3a3b2SChristoph Hellwig err_comp: 122214d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1223fd75c789SNir Muchtar err: 1224fd75c789SNir Muchtar destroy_workqueue(ib_wq); 12251da177e4SLinus Torvalds return ret; 12261da177e4SLinus Torvalds } 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 12291da177e4SLinus Torvalds { 12301da177e4SLinus Torvalds ib_cache_cleanup(); 12316c80b41aSLeon Romanovsky nldev_exit(); 1232c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_LS); 1233c9901724SLeon Romanovsky unregister_lsm_notifier(&ibdev_lsm_nb); 1234c2e49c92SMark Bloch ib_sa_cleanup(); 12354c2cb422SMark Bloch ib_mad_cleanup(); 1236e3f20f02SLeon Romanovsky addr_cleanup(); 1237c9901724SLeon Romanovsky rdma_nl_exit(); 123855aeed06SJason Gunthorpe class_unregister(&ib_class); 123914d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1240f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 1241f0626710STejun Heo destroy_workqueue(ib_wq); 12421da177e4SLinus Torvalds } 12431da177e4SLinus Torvalds 1244e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); 1245e3bf14bdSJason Gunthorpe 12461da177e4SLinus Torvalds module_init(ib_core_init); 12471da177e4SLinus Torvalds module_exit(ib_core_cleanup); 1248