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; 64*f794809aSJack Morgenstein struct workqueue_struct *ib_comp_unbound_wq; 65f0626710STejun Heo struct workqueue_struct *ib_wq; 66f0626710STejun Heo EXPORT_SYMBOL_GPL(ib_wq); 67f0626710STejun Heo 685aa44bb9SHaggai Eran /* The device_list and client_list contain devices and clients after their 695aa44bb9SHaggai Eran * registration has completed, and the devices and clients are removed 705aa44bb9SHaggai Eran * during unregistration. */ 711da177e4SLinus Torvalds static LIST_HEAD(device_list); 721da177e4SLinus Torvalds static LIST_HEAD(client_list); 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds /* 755aa44bb9SHaggai Eran * device_mutex and lists_rwsem protect access to both device_list and 765aa44bb9SHaggai Eran * client_list. device_mutex protects writer access by device and client 775aa44bb9SHaggai Eran * registration / de-registration. lists_rwsem protects reader access to 785aa44bb9SHaggai Eran * these lists. Iterators of these lists must lock it for read, while updates 795aa44bb9SHaggai Eran * to the lists must be done with a write lock. A special case is when the 805aa44bb9SHaggai Eran * device_mutex is locked. In this case locking the lists for read access is 815aa44bb9SHaggai Eran * not necessary as the device_mutex implies it. 827c1eb45aSHaggai Eran * 837c1eb45aSHaggai Eran * lists_rwsem also protects access to the client data list. 841da177e4SLinus Torvalds */ 8595ed644fSIngo Molnar static DEFINE_MUTEX(device_mutex); 865aa44bb9SHaggai Eran static DECLARE_RWSEM(lists_rwsem); 875aa44bb9SHaggai Eran 888f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 898f408ab6SDaniel Jurgens void *lsm_data); 908f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work); 918f408ab6SDaniel Jurgens static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task); 928f408ab6SDaniel Jurgens 938f408ab6SDaniel Jurgens static struct notifier_block ibdev_lsm_nb = { 948f408ab6SDaniel Jurgens .notifier_call = ib_security_change, 958f408ab6SDaniel Jurgens }; 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds static int ib_device_check_mandatory(struct ib_device *device) 981da177e4SLinus Torvalds { 991da177e4SLinus Torvalds #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device, x), #x } 1001da177e4SLinus Torvalds static const struct { 1011da177e4SLinus Torvalds size_t offset; 1021da177e4SLinus Torvalds char *name; 1031da177e4SLinus Torvalds } mandatory_table[] = { 1041da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_device), 1051da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_port), 1061da177e4SLinus Torvalds IB_MANDATORY_FUNC(query_pkey), 1071da177e4SLinus Torvalds IB_MANDATORY_FUNC(alloc_pd), 1081da177e4SLinus Torvalds IB_MANDATORY_FUNC(dealloc_pd), 1091da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_qp), 1101da177e4SLinus Torvalds IB_MANDATORY_FUNC(modify_qp), 1111da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_qp), 1121da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_send), 1131da177e4SLinus Torvalds IB_MANDATORY_FUNC(post_recv), 1141da177e4SLinus Torvalds IB_MANDATORY_FUNC(create_cq), 1151da177e4SLinus Torvalds IB_MANDATORY_FUNC(destroy_cq), 1161da177e4SLinus Torvalds IB_MANDATORY_FUNC(poll_cq), 1171da177e4SLinus Torvalds IB_MANDATORY_FUNC(req_notify_cq), 1181da177e4SLinus Torvalds IB_MANDATORY_FUNC(get_dma_mr), 1197738613eSIra Weiny IB_MANDATORY_FUNC(dereg_mr), 1207738613eSIra Weiny IB_MANDATORY_FUNC(get_port_immutable) 1211da177e4SLinus Torvalds }; 1221da177e4SLinus Torvalds int i; 1231da177e4SLinus Torvalds 1249a6b090cSAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { 1251da177e4SLinus Torvalds if (!*(void **) ((void *) device + mandatory_table[i].offset)) { 126aba25a3eSParav Pandit pr_warn("Device %s is missing mandatory function %s\n", 1271da177e4SLinus Torvalds device->name, mandatory_table[i].name); 1281da177e4SLinus Torvalds return -EINVAL; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds } 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds return 0; 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds 135f8978bd9SLeon Romanovsky static struct ib_device *__ib_device_get_by_index(u32 index) 136ecc82c53SLeon Romanovsky { 137ecc82c53SLeon Romanovsky struct ib_device *device; 138ecc82c53SLeon Romanovsky 139ecc82c53SLeon Romanovsky list_for_each_entry(device, &device_list, core_list) 140ecc82c53SLeon Romanovsky if (device->index == index) 141ecc82c53SLeon Romanovsky return device; 142ecc82c53SLeon Romanovsky 143ecc82c53SLeon Romanovsky return NULL; 144ecc82c53SLeon Romanovsky } 145ecc82c53SLeon Romanovsky 146f8978bd9SLeon Romanovsky /* 147f8978bd9SLeon Romanovsky * Caller is responsible to return refrerence count by calling put_device() 148f8978bd9SLeon Romanovsky */ 149f8978bd9SLeon Romanovsky struct ib_device *ib_device_get_by_index(u32 index) 150f8978bd9SLeon Romanovsky { 151f8978bd9SLeon Romanovsky struct ib_device *device; 152f8978bd9SLeon Romanovsky 153f8978bd9SLeon Romanovsky down_read(&lists_rwsem); 154f8978bd9SLeon Romanovsky device = __ib_device_get_by_index(index); 155f8978bd9SLeon Romanovsky if (device) 156f8978bd9SLeon Romanovsky get_device(&device->dev); 157f8978bd9SLeon Romanovsky 158f8978bd9SLeon Romanovsky up_read(&lists_rwsem); 159f8978bd9SLeon Romanovsky return device; 160f8978bd9SLeon Romanovsky } 161f8978bd9SLeon Romanovsky 1621da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1631da177e4SLinus Torvalds { 1641da177e4SLinus Torvalds struct ib_device *device; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 1671da177e4SLinus Torvalds if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) 1681da177e4SLinus Torvalds return device; 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds return NULL; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds static int alloc_name(char *name) 1741da177e4SLinus Torvalds { 17565d470b3SRoland Dreier unsigned long *inuse; 1761da177e4SLinus Torvalds char buf[IB_DEVICE_NAME_MAX]; 1771da177e4SLinus Torvalds struct ib_device *device; 1781da177e4SLinus Torvalds int i; 1791da177e4SLinus Torvalds 18065d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 1811da177e4SLinus Torvalds if (!inuse) 1821da177e4SLinus Torvalds return -ENOMEM; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 1851da177e4SLinus Torvalds if (!sscanf(device->name, name, &i)) 1861da177e4SLinus Torvalds continue; 1871da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 1881da177e4SLinus Torvalds continue; 1891da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1901da177e4SLinus Torvalds if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) 1911da177e4SLinus Torvalds set_bit(i, inuse); 1921da177e4SLinus Torvalds } 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 1951da177e4SLinus Torvalds free_page((unsigned long) inuse); 1961da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds if (__ib_device_get_by_name(buf)) 1991da177e4SLinus Torvalds return -ENFILE; 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds strlcpy(name, buf, IB_DEVICE_NAME_MAX); 2021da177e4SLinus Torvalds return 0; 2031da177e4SLinus Torvalds } 2041da177e4SLinus Torvalds 20555aeed06SJason Gunthorpe static void ib_device_release(struct device *device) 20655aeed06SJason Gunthorpe { 20755aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 20855aeed06SJason Gunthorpe 2094be3a4faSParav Pandit WARN_ON(dev->reg_state == IB_DEV_REGISTERED); 2104be3a4faSParav Pandit if (dev->reg_state == IB_DEV_UNREGISTERED) { 2114be3a4faSParav Pandit /* 2124be3a4faSParav Pandit * In IB_DEV_UNINITIALIZED state, cache or port table 2134be3a4faSParav Pandit * is not even created. Free cache and port table only when 2144be3a4faSParav Pandit * device reaches UNREGISTERED state. 2154be3a4faSParav Pandit */ 21603db3a2dSMatan Barak ib_cache_release_one(dev); 21755aeed06SJason Gunthorpe kfree(dev->port_immutable); 2184be3a4faSParav Pandit } 21955aeed06SJason Gunthorpe kfree(dev); 22055aeed06SJason Gunthorpe } 22155aeed06SJason Gunthorpe 22255aeed06SJason Gunthorpe static int ib_device_uevent(struct device *device, 22355aeed06SJason Gunthorpe struct kobj_uevent_env *env) 22455aeed06SJason Gunthorpe { 22555aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 22655aeed06SJason Gunthorpe 22755aeed06SJason Gunthorpe if (add_uevent_var(env, "NAME=%s", dev->name)) 22855aeed06SJason Gunthorpe return -ENOMEM; 22955aeed06SJason Gunthorpe 23055aeed06SJason Gunthorpe /* 23155aeed06SJason Gunthorpe * It would be nice to pass the node GUID with the event... 23255aeed06SJason Gunthorpe */ 23355aeed06SJason Gunthorpe 23455aeed06SJason Gunthorpe return 0; 23555aeed06SJason Gunthorpe } 23655aeed06SJason Gunthorpe 23755aeed06SJason Gunthorpe static struct class ib_class = { 23855aeed06SJason Gunthorpe .name = "infiniband", 23955aeed06SJason Gunthorpe .dev_release = ib_device_release, 24055aeed06SJason Gunthorpe .dev_uevent = ib_device_uevent, 24155aeed06SJason Gunthorpe }; 24255aeed06SJason Gunthorpe 2431da177e4SLinus Torvalds /** 2441da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 2451da177e4SLinus Torvalds * @size:size of structure to allocate 2461da177e4SLinus Torvalds * 2471da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 2481da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 2491da177e4SLinus Torvalds * including any private data used by the low-level driver. 2501da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 2511da177e4SLinus Torvalds * ib_alloc_device(). 2521da177e4SLinus Torvalds */ 2531da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 2541da177e4SLinus Torvalds { 25555aeed06SJason Gunthorpe struct ib_device *device; 2561da177e4SLinus Torvalds 25755aeed06SJason Gunthorpe if (WARN_ON(size < sizeof(struct ib_device))) 25855aeed06SJason Gunthorpe return NULL; 25955aeed06SJason Gunthorpe 26055aeed06SJason Gunthorpe device = kzalloc(size, GFP_KERNEL); 26155aeed06SJason Gunthorpe if (!device) 26255aeed06SJason Gunthorpe return NULL; 26355aeed06SJason Gunthorpe 26402d8883fSLeon Romanovsky rdma_restrack_init(&device->res); 26502d8883fSLeon Romanovsky 26655aeed06SJason Gunthorpe device->dev.class = &ib_class; 26755aeed06SJason Gunthorpe device_initialize(&device->dev); 26855aeed06SJason Gunthorpe 26955aeed06SJason Gunthorpe dev_set_drvdata(&device->dev, device); 27055aeed06SJason Gunthorpe 27155aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->event_handler_list); 27255aeed06SJason Gunthorpe spin_lock_init(&device->event_handler_lock); 27355aeed06SJason Gunthorpe spin_lock_init(&device->client_data_lock); 27455aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->client_data_list); 27555aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->port_list); 27655aeed06SJason Gunthorpe 27755aeed06SJason Gunthorpe return device; 2781da177e4SLinus Torvalds } 2791da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /** 2821da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 2831da177e4SLinus Torvalds * @device:structure to free 2841da177e4SLinus Torvalds * 2851da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 2861da177e4SLinus Torvalds */ 2871da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 2881da177e4SLinus Torvalds { 28955aeed06SJason Gunthorpe WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && 29055aeed06SJason Gunthorpe device->reg_state != IB_DEV_UNINITIALIZED); 291103140ecSLeon Romanovsky rdma_restrack_clean(&device->res); 292924b8900SLeon Romanovsky put_device(&device->dev); 2931da177e4SLinus Torvalds } 2941da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 2971da177e4SLinus Torvalds { 2981da177e4SLinus Torvalds struct ib_client_data *context; 2991da177e4SLinus Torvalds unsigned long flags; 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds context = kmalloc(sizeof *context, GFP_KERNEL); 302a0b3455fSLeon Romanovsky if (!context) 3031da177e4SLinus Torvalds return -ENOMEM; 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds context->client = client; 3061da177e4SLinus Torvalds context->data = NULL; 3077c1eb45aSHaggai Eran context->going_down = false; 3081da177e4SLinus Torvalds 3097c1eb45aSHaggai Eran down_write(&lists_rwsem); 3101da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 3111da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 3121da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 3137c1eb45aSHaggai Eran up_write(&lists_rwsem); 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds return 0; 3161da177e4SLinus Torvalds } 3171da177e4SLinus Torvalds 318337877a4SIra Weiny static int verify_immutable(const struct ib_device *dev, u8 port) 319337877a4SIra Weiny { 320337877a4SIra Weiny return WARN_ON(!rdma_cap_ib_mad(dev, port) && 321337877a4SIra Weiny rdma_max_mad_size(dev, port) != 0); 322337877a4SIra Weiny } 323337877a4SIra Weiny 3247738613eSIra Weiny static int read_port_immutable(struct ib_device *device) 3255eb620c8SYosef Etigin { 32655aeed06SJason Gunthorpe int ret; 3277738613eSIra Weiny u8 start_port = rdma_start_port(device); 3287738613eSIra Weiny u8 end_port = rdma_end_port(device); 3297738613eSIra Weiny u8 port; 3305eb620c8SYosef Etigin 3317738613eSIra Weiny /** 3327738613eSIra Weiny * device->port_immutable is indexed directly by the port number to make 3337738613eSIra Weiny * access to this data as efficient as possible. 3347738613eSIra Weiny * 3357738613eSIra Weiny * Therefore port_immutable is declared as a 1 based array with 3367738613eSIra Weiny * potential empty slots at the beginning. 3377738613eSIra Weiny */ 3386396bb22SKees Cook device->port_immutable = kcalloc(end_port + 1, 3396396bb22SKees Cook sizeof(*device->port_immutable), 3405eb620c8SYosef Etigin GFP_KERNEL); 3417738613eSIra Weiny if (!device->port_immutable) 34255aeed06SJason Gunthorpe return -ENOMEM; 3435eb620c8SYosef Etigin 3447738613eSIra Weiny for (port = start_port; port <= end_port; ++port) { 3457738613eSIra Weiny ret = device->get_port_immutable(device, port, 3467738613eSIra Weiny &device->port_immutable[port]); 3475eb620c8SYosef Etigin if (ret) 3485eb620c8SYosef Etigin return ret; 34955aeed06SJason Gunthorpe 35055aeed06SJason Gunthorpe if (verify_immutable(device, port)) 35155aeed06SJason Gunthorpe return -EINVAL; 35255aeed06SJason Gunthorpe } 35355aeed06SJason Gunthorpe return 0; 3545eb620c8SYosef Etigin } 3555eb620c8SYosef Etigin 3569abb0d1bSLeon Romanovsky void ib_get_device_fw_str(struct ib_device *dev, char *str) 3575fa76c20SIra Weiny { 3585fa76c20SIra Weiny if (dev->get_dev_fw_str) 3599abb0d1bSLeon Romanovsky dev->get_dev_fw_str(dev, str); 3605fa76c20SIra Weiny else 3615fa76c20SIra Weiny str[0] = '\0'; 3625fa76c20SIra Weiny } 3635fa76c20SIra Weiny EXPORT_SYMBOL(ib_get_device_fw_str); 3645fa76c20SIra Weiny 365d291f1a6SDaniel Jurgens static int setup_port_pkey_list(struct ib_device *device) 366d291f1a6SDaniel Jurgens { 367d291f1a6SDaniel Jurgens int i; 368d291f1a6SDaniel Jurgens 369d291f1a6SDaniel Jurgens /** 370d291f1a6SDaniel Jurgens * device->port_pkey_list is indexed directly by the port number, 371d291f1a6SDaniel Jurgens * Therefore it is declared as a 1 based array with potential empty 372d291f1a6SDaniel Jurgens * slots at the beginning. 373d291f1a6SDaniel Jurgens */ 374d291f1a6SDaniel Jurgens device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, 375d291f1a6SDaniel Jurgens sizeof(*device->port_pkey_list), 376d291f1a6SDaniel Jurgens GFP_KERNEL); 377d291f1a6SDaniel Jurgens 378d291f1a6SDaniel Jurgens if (!device->port_pkey_list) 379d291f1a6SDaniel Jurgens return -ENOMEM; 380d291f1a6SDaniel Jurgens 381d291f1a6SDaniel Jurgens for (i = 0; i < (rdma_end_port(device) + 1); i++) { 382d291f1a6SDaniel Jurgens spin_lock_init(&device->port_pkey_list[i].list_lock); 383d291f1a6SDaniel Jurgens INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); 384d291f1a6SDaniel Jurgens } 385d291f1a6SDaniel Jurgens 386d291f1a6SDaniel Jurgens return 0; 387d291f1a6SDaniel Jurgens } 388d291f1a6SDaniel Jurgens 3898f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work) 3908f408ab6SDaniel Jurgens { 3918f408ab6SDaniel Jurgens struct ib_device *dev; 3928f408ab6SDaniel Jurgens 3938f408ab6SDaniel Jurgens down_read(&lists_rwsem); 3948f408ab6SDaniel Jurgens list_for_each_entry(dev, &device_list, core_list) { 3958f408ab6SDaniel Jurgens int i; 3968f408ab6SDaniel Jurgens 3978f408ab6SDaniel Jurgens for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { 3988f408ab6SDaniel Jurgens u64 sp; 3998f408ab6SDaniel Jurgens int ret = ib_get_cached_subnet_prefix(dev, 4008f408ab6SDaniel Jurgens i, 4018f408ab6SDaniel Jurgens &sp); 4028f408ab6SDaniel Jurgens 4038f408ab6SDaniel Jurgens WARN_ONCE(ret, 4048f408ab6SDaniel Jurgens "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", 4058f408ab6SDaniel Jurgens ret); 406a750cfdeSDaniel Jurgens if (!ret) 4078f408ab6SDaniel Jurgens ib_security_cache_change(dev, i, sp); 4088f408ab6SDaniel Jurgens } 4098f408ab6SDaniel Jurgens } 4108f408ab6SDaniel Jurgens up_read(&lists_rwsem); 4118f408ab6SDaniel Jurgens } 4128f408ab6SDaniel Jurgens 4138f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 4148f408ab6SDaniel Jurgens void *lsm_data) 4158f408ab6SDaniel Jurgens { 4168f408ab6SDaniel Jurgens if (event != LSM_POLICY_CHANGE) 4178f408ab6SDaniel Jurgens return NOTIFY_DONE; 4188f408ab6SDaniel Jurgens 4198f408ab6SDaniel Jurgens schedule_work(&ib_policy_change_work); 4208f408ab6SDaniel Jurgens 4218f408ab6SDaniel Jurgens return NOTIFY_OK; 4228f408ab6SDaniel Jurgens } 4238f408ab6SDaniel Jurgens 4241da177e4SLinus Torvalds /** 425ecc82c53SLeon Romanovsky * __dev_new_index - allocate an device index 426ecc82c53SLeon Romanovsky * 427ecc82c53SLeon Romanovsky * Returns a suitable unique value for a new device interface 428ecc82c53SLeon Romanovsky * number. It assumes that there are less than 2^32-1 ib devices 429ecc82c53SLeon Romanovsky * will be present in the system. 430ecc82c53SLeon Romanovsky */ 431ecc82c53SLeon Romanovsky static u32 __dev_new_index(void) 432ecc82c53SLeon Romanovsky { 433ecc82c53SLeon Romanovsky /* 434ecc82c53SLeon Romanovsky * The device index to allow stable naming. 435ecc82c53SLeon Romanovsky * Similar to struct net -> ifindex. 436ecc82c53SLeon Romanovsky */ 437ecc82c53SLeon Romanovsky static u32 index; 438ecc82c53SLeon Romanovsky 439ecc82c53SLeon Romanovsky for (;;) { 440ecc82c53SLeon Romanovsky if (!(++index)) 441ecc82c53SLeon Romanovsky index = 1; 442ecc82c53SLeon Romanovsky 443ecc82c53SLeon Romanovsky if (!__ib_device_get_by_index(index)) 444ecc82c53SLeon Romanovsky return index; 445ecc82c53SLeon Romanovsky } 446ecc82c53SLeon Romanovsky } 447ecc82c53SLeon Romanovsky 448ecc82c53SLeon Romanovsky /** 4491da177e4SLinus Torvalds * ib_register_device - Register an IB device with IB core 4501da177e4SLinus Torvalds * @device:Device to register 4511da177e4SLinus Torvalds * 4521da177e4SLinus Torvalds * Low-level drivers use ib_register_device() to register their 4531da177e4SLinus Torvalds * devices with the IB core. All registered clients will receive a 4541da177e4SLinus Torvalds * callback for each device that is added. @device must be allocated 4551da177e4SLinus Torvalds * with ib_alloc_device(). 4561da177e4SLinus Torvalds */ 4579a6edb60SRalph Campbell int ib_register_device(struct ib_device *device, 4589a6edb60SRalph Campbell int (*port_callback)(struct ib_device *, 4599a6edb60SRalph Campbell u8, struct kobject *)) 4601da177e4SLinus Torvalds { 4611da177e4SLinus Torvalds int ret; 462b8071ad8SDoug Ledford struct ib_client *client; 4633e153a93SIra Weiny struct ib_udata uhw = {.outlen = 0, .inlen = 0}; 46499db9494SBart Van Assche struct device *parent = device->dev.parent; 4651da177e4SLinus Torvalds 4660957c29fSBart Van Assche WARN_ON_ONCE(device->dma_device); 4670957c29fSBart Van Assche if (device->dev.dma_ops) { 4680957c29fSBart Van Assche /* 4690957c29fSBart Van Assche * The caller provided custom DMA operations. Copy the 4700957c29fSBart Van Assche * DMA-related fields that are used by e.g. dma_alloc_coherent() 4710957c29fSBart Van Assche * into device->dev. 4720957c29fSBart Van Assche */ 4730957c29fSBart Van Assche device->dma_device = &device->dev; 47402ee9da3SBart Van Assche if (!device->dev.dma_mask) { 47502ee9da3SBart Van Assche if (parent) 47699db9494SBart Van Assche device->dev.dma_mask = parent->dma_mask; 47702ee9da3SBart Van Assche else 47802ee9da3SBart Van Assche WARN_ON_ONCE(true); 47902ee9da3SBart Van Assche } 48002ee9da3SBart Van Assche if (!device->dev.coherent_dma_mask) { 48102ee9da3SBart Van Assche if (parent) 4820957c29fSBart Van Assche device->dev.coherent_dma_mask = 4830957c29fSBart Van Assche parent->coherent_dma_mask; 48402ee9da3SBart Van Assche else 48502ee9da3SBart Van Assche WARN_ON_ONCE(true); 48602ee9da3SBart Van Assche } 4870957c29fSBart Van Assche } else { 4880957c29fSBart Van Assche /* 4890957c29fSBart Van Assche * The caller did not provide custom DMA operations. Use the 4900957c29fSBart Van Assche * DMA mapping operations of the parent device. 4910957c29fSBart Van Assche */ 49202ee9da3SBart Van Assche WARN_ON_ONCE(!parent); 4930957c29fSBart Van Assche device->dma_device = parent; 4940957c29fSBart Van Assche } 4951da177e4SLinus Torvalds 49695ed644fSIngo Molnar mutex_lock(&device_mutex); 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds if (strchr(device->name, '%')) { 4991da177e4SLinus Torvalds ret = alloc_name(device->name); 5001da177e4SLinus Torvalds if (ret) 5011da177e4SLinus Torvalds goto out; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds if (ib_device_check_mandatory(device)) { 5051da177e4SLinus Torvalds ret = -EINVAL; 5061da177e4SLinus Torvalds goto out; 5071da177e4SLinus Torvalds } 5081da177e4SLinus Torvalds 5097738613eSIra Weiny ret = read_port_immutable(device); 5105eb620c8SYosef Etigin if (ret) { 511aba25a3eSParav Pandit pr_warn("Couldn't create per port immutable data %s\n", 5125eb620c8SYosef Etigin device->name); 5135eb620c8SYosef Etigin goto out; 5145eb620c8SYosef Etigin } 5155eb620c8SYosef Etigin 516d291f1a6SDaniel Jurgens ret = setup_port_pkey_list(device); 517d291f1a6SDaniel Jurgens if (ret) { 518d291f1a6SDaniel Jurgens pr_warn("Couldn't create per port_pkey_list\n"); 519d291f1a6SDaniel Jurgens goto out; 520d291f1a6SDaniel Jurgens } 521d291f1a6SDaniel Jurgens 52203db3a2dSMatan Barak ret = ib_cache_setup_one(device); 52303db3a2dSMatan Barak if (ret) { 524aba25a3eSParav Pandit pr_warn("Couldn't set up InfiniBand P_Key/GID cache\n"); 5254be3a4faSParav Pandit goto port_cleanup; 52603db3a2dSMatan Barak } 52703db3a2dSMatan Barak 52843579b5fSParav Pandit ret = ib_device_register_rdmacg(device); 52943579b5fSParav Pandit if (ret) { 53043579b5fSParav Pandit pr_warn("Couldn't register device with rdma cgroup\n"); 5314be3a4faSParav Pandit goto cache_cleanup; 53243579b5fSParav Pandit } 53343579b5fSParav Pandit 5343e153a93SIra Weiny memset(&device->attrs, 0, sizeof(device->attrs)); 5353e153a93SIra Weiny ret = device->query_device(device, &device->attrs, &uhw); 5363e153a93SIra Weiny if (ret) { 537aba25a3eSParav Pandit pr_warn("Couldn't query the device attributes\n"); 5382fb4f4eaSParav Pandit goto cg_cleanup; 5393e153a93SIra Weiny } 5403e153a93SIra Weiny 5419a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 5421da177e4SLinus Torvalds if (ret) { 543aba25a3eSParav Pandit pr_warn("Couldn't register device %s with driver model\n", 5441da177e4SLinus Torvalds device->name); 5452fb4f4eaSParav Pandit goto cg_cleanup; 5461da177e4SLinus Torvalds } 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 5491da177e4SLinus Torvalds 5501da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 551b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 5521da177e4SLinus Torvalds client->add(device); 5531da177e4SLinus Torvalds 554ecc82c53SLeon Romanovsky device->index = __dev_new_index(); 5555aa44bb9SHaggai Eran down_write(&lists_rwsem); 5565aa44bb9SHaggai Eran list_add_tail(&device->core_list, &device_list); 5575aa44bb9SHaggai Eran up_write(&lists_rwsem); 5584be3a4faSParav Pandit mutex_unlock(&device_mutex); 5594be3a4faSParav Pandit return 0; 5604be3a4faSParav Pandit 5612fb4f4eaSParav Pandit cg_cleanup: 5622fb4f4eaSParav Pandit ib_device_unregister_rdmacg(device); 5634be3a4faSParav Pandit cache_cleanup: 5644be3a4faSParav Pandit ib_cache_cleanup_one(device); 5654be3a4faSParav Pandit ib_cache_release_one(device); 5664be3a4faSParav Pandit port_cleanup: 5674be3a4faSParav Pandit kfree(device->port_immutable); 5681da177e4SLinus Torvalds out: 56995ed644fSIngo Molnar mutex_unlock(&device_mutex); 5701da177e4SLinus Torvalds return ret; 5711da177e4SLinus Torvalds } 5721da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds /** 5751da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 5761da177e4SLinus Torvalds * @device:Device to unregister 5771da177e4SLinus Torvalds * 5781da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 5791da177e4SLinus Torvalds */ 5801da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 5811da177e4SLinus Torvalds { 5821da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 5831da177e4SLinus Torvalds unsigned long flags; 5841da177e4SLinus Torvalds 58595ed644fSIngo Molnar mutex_lock(&device_mutex); 5861da177e4SLinus Torvalds 5875aa44bb9SHaggai Eran down_write(&lists_rwsem); 5885aa44bb9SHaggai Eran list_del(&device->core_list); 5897c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 5907c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 5917c1eb45aSHaggai Eran context->going_down = true; 5927c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 5937c1eb45aSHaggai Eran downgrade_write(&lists_rwsem); 5945aa44bb9SHaggai Eran 5957c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, 5967c1eb45aSHaggai Eran list) { 5977c1eb45aSHaggai Eran if (context->client->remove) 5987c1eb45aSHaggai Eran context->client->remove(device, context->data); 5997c1eb45aSHaggai Eran } 6007c1eb45aSHaggai Eran up_read(&lists_rwsem); 6011da177e4SLinus Torvalds 60243579b5fSParav Pandit ib_device_unregister_rdmacg(device); 6039206dff1SRoland Dreier ib_device_unregister_sysfs(device); 60406f8174aSShiraz Saleem 60506f8174aSShiraz Saleem mutex_unlock(&device_mutex); 60606f8174aSShiraz Saleem 60703db3a2dSMatan Barak ib_cache_cleanup_one(device); 6089206dff1SRoland Dreier 609d291f1a6SDaniel Jurgens ib_security_destroy_port_pkey_list(device); 610d291f1a6SDaniel Jurgens kfree(device->port_pkey_list); 611d291f1a6SDaniel Jurgens 6127c1eb45aSHaggai Eran down_write(&lists_rwsem); 6131da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 6141da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 6151da177e4SLinus Torvalds kfree(context); 6161da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 6177c1eb45aSHaggai Eran up_write(&lists_rwsem); 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds /** 6241da177e4SLinus Torvalds * ib_register_client - Register an IB client 6251da177e4SLinus Torvalds * @client:Client to register 6261da177e4SLinus Torvalds * 6271da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 6281da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 6291da177e4SLinus Torvalds * device is added, each registered client's add method will be called 6301da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 6311da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 6321da177e4SLinus Torvalds * order that clients were registered). In addition, when 6331da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 6341da177e4SLinus Torvalds * callback for all devices already registered. 6351da177e4SLinus Torvalds */ 6361da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 6371da177e4SLinus Torvalds { 6381da177e4SLinus Torvalds struct ib_device *device; 6391da177e4SLinus Torvalds 64095ed644fSIngo Molnar mutex_lock(&device_mutex); 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 643b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 6441da177e4SLinus Torvalds client->add(device); 6451da177e4SLinus Torvalds 6465aa44bb9SHaggai Eran down_write(&lists_rwsem); 6475aa44bb9SHaggai Eran list_add_tail(&client->list, &client_list); 6485aa44bb9SHaggai Eran up_write(&lists_rwsem); 6495aa44bb9SHaggai Eran 65095ed644fSIngo Molnar mutex_unlock(&device_mutex); 6511da177e4SLinus Torvalds 6521da177e4SLinus Torvalds return 0; 6531da177e4SLinus Torvalds } 6541da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds /** 6571da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 6581da177e4SLinus Torvalds * @client:Client to unregister 6591da177e4SLinus Torvalds * 6601da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 6611da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 6621da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 6631da177e4SLinus Torvalds */ 6641da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 6651da177e4SLinus Torvalds { 6661da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 6671da177e4SLinus Torvalds struct ib_device *device; 6681da177e4SLinus Torvalds unsigned long flags; 6691da177e4SLinus Torvalds 67095ed644fSIngo Molnar mutex_lock(&device_mutex); 6711da177e4SLinus Torvalds 6725aa44bb9SHaggai Eran down_write(&lists_rwsem); 6735aa44bb9SHaggai Eran list_del(&client->list); 6745aa44bb9SHaggai Eran up_write(&lists_rwsem); 6755aa44bb9SHaggai Eran 6761da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 6777c1eb45aSHaggai Eran struct ib_client_data *found_context = NULL; 6781da177e4SLinus Torvalds 6797c1eb45aSHaggai Eran down_write(&lists_rwsem); 6801da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 6811da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 6821da177e4SLinus Torvalds if (context->client == client) { 6837c1eb45aSHaggai Eran context->going_down = true; 6847c1eb45aSHaggai Eran found_context = context; 6857c1eb45aSHaggai Eran break; 6861da177e4SLinus Torvalds } 6871da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 6887c1eb45aSHaggai Eran up_write(&lists_rwsem); 6897c1eb45aSHaggai Eran 6907c1eb45aSHaggai Eran if (client->remove) 6917c1eb45aSHaggai Eran client->remove(device, found_context ? 6927c1eb45aSHaggai Eran found_context->data : NULL); 6937c1eb45aSHaggai Eran 6947c1eb45aSHaggai Eran if (!found_context) { 6957c1eb45aSHaggai Eran pr_warn("No client context found for %s/%s\n", 6967c1eb45aSHaggai Eran device->name, client->name); 6977c1eb45aSHaggai Eran continue; 6987c1eb45aSHaggai Eran } 6997c1eb45aSHaggai Eran 7007c1eb45aSHaggai Eran down_write(&lists_rwsem); 7017c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 7027c1eb45aSHaggai Eran list_del(&found_context->list); 7037c1eb45aSHaggai Eran kfree(found_context); 7047c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 7057c1eb45aSHaggai Eran up_write(&lists_rwsem); 7061da177e4SLinus Torvalds } 7071da177e4SLinus Torvalds 70895ed644fSIngo Molnar mutex_unlock(&device_mutex); 7091da177e4SLinus Torvalds } 7101da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds /** 7131da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 7141da177e4SLinus Torvalds * @device:Device to get context for 7151da177e4SLinus Torvalds * @client:Client to get context for 7161da177e4SLinus Torvalds * 7171da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 7181da177e4SLinus Torvalds * ib_set_client_data(). 7191da177e4SLinus Torvalds */ 7201da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 7211da177e4SLinus Torvalds { 7221da177e4SLinus Torvalds struct ib_client_data *context; 7231da177e4SLinus Torvalds void *ret = NULL; 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 ret = context->data; 7301da177e4SLinus Torvalds break; 7311da177e4SLinus Torvalds } 7321da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds return ret; 7351da177e4SLinus Torvalds } 7361da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds /** 7399cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 7401da177e4SLinus Torvalds * @device:Device to set context for 7411da177e4SLinus Torvalds * @client:Client to set context for 7421da177e4SLinus Torvalds * @data:Context to set 7431da177e4SLinus Torvalds * 7441da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 7451da177e4SLinus Torvalds * ib_get_client_data(). 7461da177e4SLinus Torvalds */ 7471da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 7481da177e4SLinus Torvalds void *data) 7491da177e4SLinus Torvalds { 7501da177e4SLinus Torvalds struct ib_client_data *context; 7511da177e4SLinus Torvalds unsigned long flags; 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 7541da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 7551da177e4SLinus Torvalds if (context->client == client) { 7561da177e4SLinus Torvalds context->data = data; 7571da177e4SLinus Torvalds goto out; 7581da177e4SLinus Torvalds } 7591da177e4SLinus Torvalds 760aba25a3eSParav Pandit pr_warn("No client context found for %s/%s\n", 7611da177e4SLinus Torvalds device->name, client->name); 7621da177e4SLinus Torvalds 7631da177e4SLinus Torvalds out: 7641da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7651da177e4SLinus Torvalds } 7661da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds /** 7691da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 7701da177e4SLinus Torvalds * @event_handler:Handler to register 7711da177e4SLinus Torvalds * 7721da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 7731da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 7741da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 7751da177e4SLinus Torvalds * callback may occur in interrupt context. 7761da177e4SLinus Torvalds */ 777dcc9881eSLeon Romanovsky void ib_register_event_handler(struct ib_event_handler *event_handler) 7781da177e4SLinus Torvalds { 7791da177e4SLinus Torvalds unsigned long flags; 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 7821da177e4SLinus Torvalds list_add_tail(&event_handler->list, 7831da177e4SLinus Torvalds &event_handler->device->event_handler_list); 7841da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds /** 7891da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 7901da177e4SLinus Torvalds * @event_handler:Handler to unregister 7911da177e4SLinus Torvalds * 7921da177e4SLinus Torvalds * Unregister an event handler registered with 7931da177e4SLinus Torvalds * ib_register_event_handler(). 7941da177e4SLinus Torvalds */ 795dcc9881eSLeon Romanovsky void ib_unregister_event_handler(struct ib_event_handler *event_handler) 7961da177e4SLinus Torvalds { 7971da177e4SLinus Torvalds unsigned long flags; 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8001da177e4SLinus Torvalds list_del(&event_handler->list); 8011da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8021da177e4SLinus Torvalds } 8031da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 8041da177e4SLinus Torvalds 8051da177e4SLinus Torvalds /** 8061da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 8071da177e4SLinus Torvalds * @event:Event to dispatch 8081da177e4SLinus Torvalds * 8091da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 8101da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 8111da177e4SLinus Torvalds * occurs. 8121da177e4SLinus Torvalds */ 8131da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 8141da177e4SLinus Torvalds { 8151da177e4SLinus Torvalds unsigned long flags; 8161da177e4SLinus Torvalds struct ib_event_handler *handler; 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 8191da177e4SLinus Torvalds 8201da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 8211da177e4SLinus Torvalds handler->handler(handler, event); 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 8241da177e4SLinus Torvalds } 8251da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds /** 8281da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 8291da177e4SLinus Torvalds * @device:Device to query 8301da177e4SLinus Torvalds * @port_num:Port number to query 8311da177e4SLinus Torvalds * @port_attr:Port attributes 8321da177e4SLinus Torvalds * 8331da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 8341da177e4SLinus Torvalds * @port_attr pointer. 8351da177e4SLinus Torvalds */ 8361da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 8371da177e4SLinus Torvalds u8 port_num, 8381da177e4SLinus Torvalds struct ib_port_attr *port_attr) 8391da177e4SLinus Torvalds { 840fad61ad4SEli Cohen union ib_gid gid; 841fad61ad4SEli Cohen int err; 842fad61ad4SEli Cohen 84324dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 844116c0074SRoland Dreier return -EINVAL; 845116c0074SRoland Dreier 846fad61ad4SEli Cohen memset(port_attr, 0, sizeof(*port_attr)); 847fad61ad4SEli Cohen err = device->query_port(device, port_num, port_attr); 848fad61ad4SEli Cohen if (err || port_attr->subnet_prefix) 849fad61ad4SEli Cohen return err; 850fad61ad4SEli Cohen 851d7012467SEli Cohen if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) 852d7012467SEli Cohen return 0; 853d7012467SEli Cohen 854f35faa4bSParav Pandit err = device->query_gid(device, port_num, 0, &gid); 855fad61ad4SEli Cohen if (err) 856fad61ad4SEli Cohen return err; 857fad61ad4SEli Cohen 858fad61ad4SEli Cohen port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); 859fad61ad4SEli Cohen return 0; 8601da177e4SLinus Torvalds } 8611da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 8621da177e4SLinus Torvalds 8631da177e4SLinus Torvalds /** 86403db3a2dSMatan Barak * ib_enum_roce_netdev - enumerate all RoCE ports 86503db3a2dSMatan Barak * @ib_dev : IB device we want to query 86603db3a2dSMatan Barak * @filter: Should we call the callback? 86703db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 86803db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 86903db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 87003db3a2dSMatan Barak * 87103db3a2dSMatan Barak * Enumerates all of the physical RoCE ports of ib_dev 87203db3a2dSMatan Barak * which are related to netdevice and calls callback() on each 87303db3a2dSMatan Barak * device for which filter() function returns non zero. 87403db3a2dSMatan Barak */ 87503db3a2dSMatan Barak void ib_enum_roce_netdev(struct ib_device *ib_dev, 87603db3a2dSMatan Barak roce_netdev_filter filter, 87703db3a2dSMatan Barak void *filter_cookie, 87803db3a2dSMatan Barak roce_netdev_callback cb, 87903db3a2dSMatan Barak void *cookie) 88003db3a2dSMatan Barak { 88103db3a2dSMatan Barak u8 port; 88203db3a2dSMatan Barak 88303db3a2dSMatan Barak for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); 88403db3a2dSMatan Barak port++) 88503db3a2dSMatan Barak if (rdma_protocol_roce(ib_dev, port)) { 88603db3a2dSMatan Barak struct net_device *idev = NULL; 88703db3a2dSMatan Barak 88803db3a2dSMatan Barak if (ib_dev->get_netdev) 88903db3a2dSMatan Barak idev = ib_dev->get_netdev(ib_dev, port); 89003db3a2dSMatan Barak 89103db3a2dSMatan Barak if (idev && 89203db3a2dSMatan Barak idev->reg_state >= NETREG_UNREGISTERED) { 89303db3a2dSMatan Barak dev_put(idev); 89403db3a2dSMatan Barak idev = NULL; 89503db3a2dSMatan Barak } 89603db3a2dSMatan Barak 89703db3a2dSMatan Barak if (filter(ib_dev, port, idev, filter_cookie)) 89803db3a2dSMatan Barak cb(ib_dev, port, idev, cookie); 89903db3a2dSMatan Barak 90003db3a2dSMatan Barak if (idev) 90103db3a2dSMatan Barak dev_put(idev); 90203db3a2dSMatan Barak } 90303db3a2dSMatan Barak } 90403db3a2dSMatan Barak 90503db3a2dSMatan Barak /** 90603db3a2dSMatan Barak * ib_enum_all_roce_netdevs - enumerate all RoCE devices 90703db3a2dSMatan Barak * @filter: Should we call the callback? 90803db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 90903db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 91003db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 91103db3a2dSMatan Barak * 91203db3a2dSMatan Barak * Enumerates all RoCE devices' physical ports which are related 91303db3a2dSMatan Barak * to netdevices and calls callback() on each device for which 91403db3a2dSMatan Barak * filter() function returns non zero. 91503db3a2dSMatan Barak */ 91603db3a2dSMatan Barak void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 91703db3a2dSMatan Barak void *filter_cookie, 91803db3a2dSMatan Barak roce_netdev_callback cb, 91903db3a2dSMatan Barak void *cookie) 92003db3a2dSMatan Barak { 92103db3a2dSMatan Barak struct ib_device *dev; 92203db3a2dSMatan Barak 92303db3a2dSMatan Barak down_read(&lists_rwsem); 92403db3a2dSMatan Barak list_for_each_entry(dev, &device_list, core_list) 92503db3a2dSMatan Barak ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); 92603db3a2dSMatan Barak up_read(&lists_rwsem); 92703db3a2dSMatan Barak } 92803db3a2dSMatan Barak 92903db3a2dSMatan Barak /** 9308030c835SLeon Romanovsky * ib_enum_all_devs - enumerate all ib_devices 9318030c835SLeon Romanovsky * @cb: Callback to call for each found ib_device 9328030c835SLeon Romanovsky * 9338030c835SLeon Romanovsky * Enumerates all ib_devices and calls callback() on each device. 9348030c835SLeon Romanovsky */ 9358030c835SLeon Romanovsky int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 9368030c835SLeon Romanovsky struct netlink_callback *cb) 9378030c835SLeon Romanovsky { 9388030c835SLeon Romanovsky struct ib_device *dev; 9398030c835SLeon Romanovsky unsigned int idx = 0; 9408030c835SLeon Romanovsky int ret = 0; 9418030c835SLeon Romanovsky 9428030c835SLeon Romanovsky down_read(&lists_rwsem); 9438030c835SLeon Romanovsky list_for_each_entry(dev, &device_list, core_list) { 9448030c835SLeon Romanovsky ret = nldev_cb(dev, skb, cb, idx); 9458030c835SLeon Romanovsky if (ret) 9468030c835SLeon Romanovsky break; 9478030c835SLeon Romanovsky idx++; 9488030c835SLeon Romanovsky } 9498030c835SLeon Romanovsky 9508030c835SLeon Romanovsky up_read(&lists_rwsem); 9518030c835SLeon Romanovsky return ret; 9528030c835SLeon Romanovsky } 9538030c835SLeon Romanovsky 9548030c835SLeon Romanovsky /** 9551da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 9561da177e4SLinus Torvalds * @device:Device to query 9571da177e4SLinus Torvalds * @port_num:Port number to query 9581da177e4SLinus Torvalds * @index:P_Key table index to query 9591da177e4SLinus Torvalds * @pkey:Returned P_Key 9601da177e4SLinus Torvalds * 9611da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 9621da177e4SLinus Torvalds */ 9631da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 9641da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 9651da177e4SLinus Torvalds { 9661da177e4SLinus Torvalds return device->query_pkey(device, port_num, index, pkey); 9671da177e4SLinus Torvalds } 9681da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds /** 9711da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 9721da177e4SLinus Torvalds * @device:Device to modify 9731da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 9741da177e4SLinus Torvalds * @device_modify:New attribute values 9751da177e4SLinus Torvalds * 9761da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 9771da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 9781da177e4SLinus Torvalds */ 9791da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 9801da177e4SLinus Torvalds int device_modify_mask, 9811da177e4SLinus Torvalds struct ib_device_modify *device_modify) 9821da177e4SLinus Torvalds { 98310e1b54bSBart Van Assche if (!device->modify_device) 98410e1b54bSBart Van Assche return -ENOSYS; 98510e1b54bSBart Van Assche 9861da177e4SLinus Torvalds return device->modify_device(device, device_modify_mask, 9871da177e4SLinus Torvalds device_modify); 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 9901da177e4SLinus Torvalds 9911da177e4SLinus Torvalds /** 9921da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 9931da177e4SLinus Torvalds * @device: The device to modify. 9941da177e4SLinus Torvalds * @port_num: The number of the port to modify. 9951da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 9961da177e4SLinus Torvalds * to change. 9971da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 9981da177e4SLinus Torvalds * 9991da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 10001da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 10011da177e4SLinus Torvalds */ 10021da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 10031da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 10041da177e4SLinus Torvalds struct ib_port_modify *port_modify) 10051da177e4SLinus Torvalds { 100661e0962dSSelvin Xavier int rc; 100710e1b54bSBart Van Assche 100824dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 1009116c0074SRoland Dreier return -EINVAL; 1010116c0074SRoland Dreier 101161e0962dSSelvin Xavier if (device->modify_port) 101261e0962dSSelvin Xavier rc = device->modify_port(device, port_num, port_modify_mask, 10131da177e4SLinus Torvalds port_modify); 101461e0962dSSelvin Xavier else 101561e0962dSSelvin Xavier rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; 101661e0962dSSelvin Xavier return rc; 10171da177e4SLinus Torvalds } 10181da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 10191da177e4SLinus Torvalds 10205eb620c8SYosef Etigin /** 10215eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 1022dbb12562SParav Pandit * a specified GID value occurs. Its searches only for IB link layer. 10235eb620c8SYosef Etigin * @device: The device to query. 10245eb620c8SYosef Etigin * @gid: The GID value to search for. 10255eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 10265eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 10275eb620c8SYosef Etigin * parameter may be NULL. 10285eb620c8SYosef Etigin */ 10295eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 1030b26c4a11SParav Pandit u8 *port_num, u16 *index) 10315eb620c8SYosef Etigin { 10325eb620c8SYosef Etigin union ib_gid tmp_gid; 10335eb620c8SYosef Etigin int ret, port, i; 10345eb620c8SYosef Etigin 10350cf18d77SIra Weiny for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { 103622d24f75SParav Pandit if (!rdma_protocol_ib(device, port)) 1037b39ffa1dSMatan Barak continue; 1038b39ffa1dSMatan Barak 10397738613eSIra Weiny for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { 10401dfce294SParav Pandit ret = rdma_query_gid(device, port, i, &tmp_gid); 10415eb620c8SYosef Etigin if (ret) 10425eb620c8SYosef Etigin return ret; 10435eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 10445eb620c8SYosef Etigin *port_num = port; 10455eb620c8SYosef Etigin if (index) 10465eb620c8SYosef Etigin *index = i; 10475eb620c8SYosef Etigin return 0; 10485eb620c8SYosef Etigin } 10495eb620c8SYosef Etigin } 10505eb620c8SYosef Etigin } 10515eb620c8SYosef Etigin 10525eb620c8SYosef Etigin return -ENOENT; 10535eb620c8SYosef Etigin } 10545eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 10555eb620c8SYosef Etigin 10565eb620c8SYosef Etigin /** 10575eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 10585eb620c8SYosef Etigin * PKey value occurs. 10595eb620c8SYosef Etigin * @device: The device to query. 10605eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 10615eb620c8SYosef Etigin * @pkey: The PKey value to search for. 10625eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 10635eb620c8SYosef Etigin */ 10645eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 10655eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 10665eb620c8SYosef Etigin { 10675eb620c8SYosef Etigin int ret, i; 10685eb620c8SYosef Etigin u16 tmp_pkey; 1069ff7166c4SJack Morgenstein int partial_ix = -1; 10705eb620c8SYosef Etigin 10717738613eSIra Weiny for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { 10725eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 10735eb620c8SYosef Etigin if (ret) 10745eb620c8SYosef Etigin return ret; 107536026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 1076ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 1077ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 10785eb620c8SYosef Etigin *index = i; 10795eb620c8SYosef Etigin return 0; 10805eb620c8SYosef Etigin } 1081ff7166c4SJack Morgenstein if (partial_ix < 0) 1082ff7166c4SJack Morgenstein partial_ix = i; 1083ff7166c4SJack Morgenstein } 10845eb620c8SYosef Etigin } 10855eb620c8SYosef Etigin 1086ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 1087ff7166c4SJack Morgenstein if (partial_ix >= 0) { 1088ff7166c4SJack Morgenstein *index = partial_ix; 1089ff7166c4SJack Morgenstein return 0; 1090ff7166c4SJack Morgenstein } 10915eb620c8SYosef Etigin return -ENOENT; 10925eb620c8SYosef Etigin } 10935eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 10945eb620c8SYosef Etigin 10959268f72dSYotam Kenneth /** 10969268f72dSYotam Kenneth * ib_get_net_dev_by_params() - Return the appropriate net_dev 10979268f72dSYotam Kenneth * for a received CM request 10989268f72dSYotam Kenneth * @dev: An RDMA device on which the request has been received. 10999268f72dSYotam Kenneth * @port: Port number on the RDMA device. 11009268f72dSYotam Kenneth * @pkey: The Pkey the request came on. 11019268f72dSYotam Kenneth * @gid: A GID that the net_dev uses to communicate. 11029268f72dSYotam Kenneth * @addr: Contains the IP address that the request specified as its 11039268f72dSYotam Kenneth * destination. 11049268f72dSYotam Kenneth */ 11059268f72dSYotam Kenneth struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, 11069268f72dSYotam Kenneth u8 port, 11079268f72dSYotam Kenneth u16 pkey, 11089268f72dSYotam Kenneth const union ib_gid *gid, 11099268f72dSYotam Kenneth const struct sockaddr *addr) 11109268f72dSYotam Kenneth { 11119268f72dSYotam Kenneth struct net_device *net_dev = NULL; 11129268f72dSYotam Kenneth struct ib_client_data *context; 11139268f72dSYotam Kenneth 11149268f72dSYotam Kenneth if (!rdma_protocol_ib(dev, port)) 11159268f72dSYotam Kenneth return NULL; 11169268f72dSYotam Kenneth 11179268f72dSYotam Kenneth down_read(&lists_rwsem); 11189268f72dSYotam Kenneth 11199268f72dSYotam Kenneth list_for_each_entry(context, &dev->client_data_list, list) { 11209268f72dSYotam Kenneth struct ib_client *client = context->client; 11219268f72dSYotam Kenneth 11229268f72dSYotam Kenneth if (context->going_down) 11239268f72dSYotam Kenneth continue; 11249268f72dSYotam Kenneth 11259268f72dSYotam Kenneth if (client->get_net_dev_by_params) { 11269268f72dSYotam Kenneth net_dev = client->get_net_dev_by_params(dev, port, pkey, 11279268f72dSYotam Kenneth gid, addr, 11289268f72dSYotam Kenneth context->data); 11299268f72dSYotam Kenneth if (net_dev) 11309268f72dSYotam Kenneth break; 11319268f72dSYotam Kenneth } 11329268f72dSYotam Kenneth } 11339268f72dSYotam Kenneth 11349268f72dSYotam Kenneth up_read(&lists_rwsem); 11359268f72dSYotam Kenneth 11369268f72dSYotam Kenneth return net_dev; 11379268f72dSYotam Kenneth } 11389268f72dSYotam Kenneth EXPORT_SYMBOL(ib_get_net_dev_by_params); 11399268f72dSYotam Kenneth 1140d0e312feSLeon Romanovsky static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { 1141735c631aSMark Bloch [RDMA_NL_LS_OP_RESOLVE] = { 1142647c75acSLeon Romanovsky .doit = ib_nl_handle_resolve_resp, 1143e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1144e3a2b93dSLeon Romanovsky }, 1145735c631aSMark Bloch [RDMA_NL_LS_OP_SET_TIMEOUT] = { 1146647c75acSLeon Romanovsky .doit = ib_nl_handle_set_timeout, 1147e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1148e3a2b93dSLeon Romanovsky }, 1149ae43f828SMark Bloch [RDMA_NL_LS_OP_IP_RESOLVE] = { 1150647c75acSLeon Romanovsky .doit = ib_nl_handle_ip_res_resp, 1151e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1152e3a2b93dSLeon Romanovsky }, 1153735c631aSMark Bloch }; 1154735c631aSMark Bloch 11551da177e4SLinus Torvalds static int __init ib_core_init(void) 11561da177e4SLinus Torvalds { 11571da177e4SLinus Torvalds int ret; 11581da177e4SLinus Torvalds 1159f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 1160f0626710STejun Heo if (!ib_wq) 1161f0626710STejun Heo return -ENOMEM; 1162f0626710STejun Heo 116314d3a3b2SChristoph Hellwig ib_comp_wq = alloc_workqueue("ib-comp-wq", 1164b7363e67SSagi Grimberg WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); 116514d3a3b2SChristoph Hellwig if (!ib_comp_wq) { 116614d3a3b2SChristoph Hellwig ret = -ENOMEM; 116714d3a3b2SChristoph Hellwig goto err; 116814d3a3b2SChristoph Hellwig } 116914d3a3b2SChristoph Hellwig 1170*f794809aSJack Morgenstein ib_comp_unbound_wq = 1171*f794809aSJack Morgenstein alloc_workqueue("ib-comp-unb-wq", 1172*f794809aSJack Morgenstein WQ_UNBOUND | WQ_HIGHPRI | WQ_MEM_RECLAIM | 1173*f794809aSJack Morgenstein WQ_SYSFS, WQ_UNBOUND_MAX_ACTIVE); 1174*f794809aSJack Morgenstein if (!ib_comp_unbound_wq) { 1175*f794809aSJack Morgenstein ret = -ENOMEM; 1176*f794809aSJack Morgenstein goto err_comp; 1177*f794809aSJack Morgenstein } 1178*f794809aSJack Morgenstein 117955aeed06SJason Gunthorpe ret = class_register(&ib_class); 1180fd75c789SNir Muchtar if (ret) { 1181aba25a3eSParav Pandit pr_warn("Couldn't create InfiniBand device class\n"); 1182*f794809aSJack Morgenstein goto err_comp_unbound; 1183fd75c789SNir Muchtar } 11841da177e4SLinus Torvalds 1185c9901724SLeon Romanovsky ret = rdma_nl_init(); 11861da177e4SLinus Torvalds if (ret) { 1187c9901724SLeon Romanovsky pr_warn("Couldn't init IB netlink interface: err %d\n", ret); 1188fd75c789SNir Muchtar goto err_sysfs; 11891da177e4SLinus Torvalds } 11901da177e4SLinus Torvalds 1191e3f20f02SLeon Romanovsky ret = addr_init(); 1192e3f20f02SLeon Romanovsky if (ret) { 1193e3f20f02SLeon Romanovsky pr_warn("Could't init IB address resolution\n"); 1194e3f20f02SLeon Romanovsky goto err_ibnl; 1195e3f20f02SLeon Romanovsky } 1196e3f20f02SLeon Romanovsky 11974c2cb422SMark Bloch ret = ib_mad_init(); 11984c2cb422SMark Bloch if (ret) { 11994c2cb422SMark Bloch pr_warn("Couldn't init IB MAD\n"); 12004c2cb422SMark Bloch goto err_addr; 12014c2cb422SMark Bloch } 12024c2cb422SMark Bloch 1203c2e49c92SMark Bloch ret = ib_sa_init(); 1204c2e49c92SMark Bloch if (ret) { 1205c2e49c92SMark Bloch pr_warn("Couldn't init SA\n"); 1206c2e49c92SMark Bloch goto err_mad; 1207c2e49c92SMark Bloch } 1208c2e49c92SMark Bloch 12098f408ab6SDaniel Jurgens ret = register_lsm_notifier(&ibdev_lsm_nb); 12108f408ab6SDaniel Jurgens if (ret) { 12118f408ab6SDaniel Jurgens pr_warn("Couldn't register LSM notifier. ret %d\n", ret); 1212c9901724SLeon Romanovsky goto err_sa; 12138f408ab6SDaniel Jurgens } 12148f408ab6SDaniel Jurgens 12156c80b41aSLeon Romanovsky nldev_init(); 1216c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); 12175ef8c0c1SJason Gunthorpe roce_gid_mgmt_init(); 1218b2cbae2cSRoland Dreier 1219fd75c789SNir Muchtar return 0; 1220fd75c789SNir Muchtar 1221735c631aSMark Bloch err_sa: 1222735c631aSMark Bloch ib_sa_cleanup(); 1223c2e49c92SMark Bloch err_mad: 1224c2e49c92SMark Bloch ib_mad_cleanup(); 12254c2cb422SMark Bloch err_addr: 12264c2cb422SMark Bloch addr_cleanup(); 1227e3f20f02SLeon Romanovsky err_ibnl: 1228c9901724SLeon Romanovsky rdma_nl_exit(); 1229fd75c789SNir Muchtar err_sysfs: 123055aeed06SJason Gunthorpe class_unregister(&ib_class); 1231*f794809aSJack Morgenstein err_comp_unbound: 1232*f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 123314d3a3b2SChristoph Hellwig err_comp: 123414d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1235fd75c789SNir Muchtar err: 1236fd75c789SNir Muchtar destroy_workqueue(ib_wq); 12371da177e4SLinus Torvalds return ret; 12381da177e4SLinus Torvalds } 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 12411da177e4SLinus Torvalds { 12425ef8c0c1SJason Gunthorpe roce_gid_mgmt_cleanup(); 12436c80b41aSLeon Romanovsky nldev_exit(); 1244c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_LS); 1245c9901724SLeon Romanovsky unregister_lsm_notifier(&ibdev_lsm_nb); 1246c2e49c92SMark Bloch ib_sa_cleanup(); 12474c2cb422SMark Bloch ib_mad_cleanup(); 1248e3f20f02SLeon Romanovsky addr_cleanup(); 1249c9901724SLeon Romanovsky rdma_nl_exit(); 125055aeed06SJason Gunthorpe class_unregister(&ib_class); 1251*f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 125214d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1253f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 1254f0626710STejun Heo destroy_workqueue(ib_wq); 12551da177e4SLinus Torvalds } 12561da177e4SLinus Torvalds 1257e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); 1258e3bf14bdSJason Gunthorpe 1259a9cd1a67SDmitry Monakhov subsys_initcall(ib_core_init); 12601da177e4SLinus Torvalds module_exit(ib_core_cleanup); 1261