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 137f8978bd9SLeon Romanovsky static 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 148f8978bd9SLeon Romanovsky /* 149f8978bd9SLeon Romanovsky * Caller is responsible to return refrerence count by calling put_device() 150f8978bd9SLeon Romanovsky */ 151f8978bd9SLeon Romanovsky struct ib_device *ib_device_get_by_index(u32 index) 152f8978bd9SLeon Romanovsky { 153f8978bd9SLeon Romanovsky struct ib_device *device; 154f8978bd9SLeon Romanovsky 155f8978bd9SLeon Romanovsky down_read(&lists_rwsem); 156f8978bd9SLeon Romanovsky device = __ib_device_get_by_index(index); 157f8978bd9SLeon Romanovsky if (device) 158f8978bd9SLeon Romanovsky get_device(&device->dev); 159f8978bd9SLeon Romanovsky 160f8978bd9SLeon Romanovsky up_read(&lists_rwsem); 161f8978bd9SLeon Romanovsky return device; 162f8978bd9SLeon Romanovsky } 163f8978bd9SLeon Romanovsky 1641da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1651da177e4SLinus Torvalds { 1661da177e4SLinus Torvalds struct ib_device *device; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 1691da177e4SLinus Torvalds if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) 1701da177e4SLinus Torvalds return device; 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds return NULL; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds static int alloc_name(char *name) 1761da177e4SLinus Torvalds { 17765d470b3SRoland Dreier unsigned long *inuse; 1781da177e4SLinus Torvalds char buf[IB_DEVICE_NAME_MAX]; 1791da177e4SLinus Torvalds struct ib_device *device; 1801da177e4SLinus Torvalds int i; 1811da177e4SLinus Torvalds 18265d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 1831da177e4SLinus Torvalds if (!inuse) 1841da177e4SLinus Torvalds return -ENOMEM; 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 1871da177e4SLinus Torvalds if (!sscanf(device->name, name, &i)) 1881da177e4SLinus Torvalds continue; 1891da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 1901da177e4SLinus Torvalds continue; 1911da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1921da177e4SLinus Torvalds if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) 1931da177e4SLinus Torvalds set_bit(i, inuse); 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 1971da177e4SLinus Torvalds free_page((unsigned long) inuse); 1981da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds if (__ib_device_get_by_name(buf)) 2011da177e4SLinus Torvalds return -ENFILE; 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds strlcpy(name, buf, IB_DEVICE_NAME_MAX); 2041da177e4SLinus Torvalds return 0; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 20755aeed06SJason Gunthorpe static void ib_device_release(struct device *device) 20855aeed06SJason Gunthorpe { 20955aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 21055aeed06SJason Gunthorpe 2114be3a4faSParav Pandit WARN_ON(dev->reg_state == IB_DEV_REGISTERED); 2124be3a4faSParav Pandit if (dev->reg_state == IB_DEV_UNREGISTERED) { 2134be3a4faSParav Pandit /* 2144be3a4faSParav Pandit * In IB_DEV_UNINITIALIZED state, cache or port table 2154be3a4faSParav Pandit * is not even created. Free cache and port table only when 2164be3a4faSParav Pandit * device reaches UNREGISTERED state. 2174be3a4faSParav Pandit */ 21803db3a2dSMatan Barak ib_cache_release_one(dev); 21955aeed06SJason Gunthorpe kfree(dev->port_immutable); 2204be3a4faSParav Pandit } 22155aeed06SJason Gunthorpe kfree(dev); 22255aeed06SJason Gunthorpe } 22355aeed06SJason Gunthorpe 22455aeed06SJason Gunthorpe static int ib_device_uevent(struct device *device, 22555aeed06SJason Gunthorpe struct kobj_uevent_env *env) 22655aeed06SJason Gunthorpe { 22755aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 22855aeed06SJason Gunthorpe 22955aeed06SJason Gunthorpe if (add_uevent_var(env, "NAME=%s", dev->name)) 23055aeed06SJason Gunthorpe return -ENOMEM; 23155aeed06SJason Gunthorpe 23255aeed06SJason Gunthorpe /* 23355aeed06SJason Gunthorpe * It would be nice to pass the node GUID with the event... 23455aeed06SJason Gunthorpe */ 23555aeed06SJason Gunthorpe 23655aeed06SJason Gunthorpe return 0; 23755aeed06SJason Gunthorpe } 23855aeed06SJason Gunthorpe 23955aeed06SJason Gunthorpe static struct class ib_class = { 24055aeed06SJason Gunthorpe .name = "infiniband", 24155aeed06SJason Gunthorpe .dev_release = ib_device_release, 24255aeed06SJason Gunthorpe .dev_uevent = ib_device_uevent, 24355aeed06SJason Gunthorpe }; 24455aeed06SJason Gunthorpe 2451da177e4SLinus Torvalds /** 2461da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 2471da177e4SLinus Torvalds * @size:size of structure to allocate 2481da177e4SLinus Torvalds * 2491da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 2501da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 2511da177e4SLinus Torvalds * including any private data used by the low-level driver. 2521da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 2531da177e4SLinus Torvalds * ib_alloc_device(). 2541da177e4SLinus Torvalds */ 2551da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 2561da177e4SLinus Torvalds { 25755aeed06SJason Gunthorpe struct ib_device *device; 2581da177e4SLinus Torvalds 25955aeed06SJason Gunthorpe if (WARN_ON(size < sizeof(struct ib_device))) 26055aeed06SJason Gunthorpe return NULL; 26155aeed06SJason Gunthorpe 26255aeed06SJason Gunthorpe device = kzalloc(size, GFP_KERNEL); 26355aeed06SJason Gunthorpe if (!device) 26455aeed06SJason Gunthorpe return NULL; 26555aeed06SJason Gunthorpe 266*02d8883fSLeon Romanovsky rdma_restrack_init(&device->res); 267*02d8883fSLeon Romanovsky 26855aeed06SJason Gunthorpe device->dev.class = &ib_class; 26955aeed06SJason Gunthorpe device_initialize(&device->dev); 27055aeed06SJason Gunthorpe 27155aeed06SJason Gunthorpe dev_set_drvdata(&device->dev, device); 27255aeed06SJason Gunthorpe 27355aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->event_handler_list); 27455aeed06SJason Gunthorpe spin_lock_init(&device->event_handler_lock); 27555aeed06SJason Gunthorpe spin_lock_init(&device->client_data_lock); 27655aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->client_data_list); 27755aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->port_list); 27855aeed06SJason Gunthorpe 27955aeed06SJason Gunthorpe return device; 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds /** 2841da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 2851da177e4SLinus Torvalds * @device:structure to free 2861da177e4SLinus Torvalds * 2871da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 2881da177e4SLinus Torvalds */ 2891da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 2901da177e4SLinus Torvalds { 29155aeed06SJason Gunthorpe WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && 29255aeed06SJason Gunthorpe device->reg_state != IB_DEV_UNINITIALIZED); 293924b8900SLeon Romanovsky put_device(&device->dev); 2941da177e4SLinus Torvalds } 2951da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 2981da177e4SLinus Torvalds { 2991da177e4SLinus Torvalds struct ib_client_data *context; 3001da177e4SLinus Torvalds unsigned long flags; 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds context = kmalloc(sizeof *context, GFP_KERNEL); 303a0b3455fSLeon Romanovsky if (!context) 3041da177e4SLinus Torvalds return -ENOMEM; 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds context->client = client; 3071da177e4SLinus Torvalds context->data = NULL; 3087c1eb45aSHaggai Eran context->going_down = false; 3091da177e4SLinus Torvalds 3107c1eb45aSHaggai Eran down_write(&lists_rwsem); 3111da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 3121da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 3131da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 3147c1eb45aSHaggai Eran up_write(&lists_rwsem); 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds return 0; 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 319337877a4SIra Weiny static int verify_immutable(const struct ib_device *dev, u8 port) 320337877a4SIra Weiny { 321337877a4SIra Weiny return WARN_ON(!rdma_cap_ib_mad(dev, port) && 322337877a4SIra Weiny rdma_max_mad_size(dev, port) != 0); 323337877a4SIra Weiny } 324337877a4SIra Weiny 3257738613eSIra Weiny static int read_port_immutable(struct ib_device *device) 3265eb620c8SYosef Etigin { 32755aeed06SJason Gunthorpe int ret; 3287738613eSIra Weiny u8 start_port = rdma_start_port(device); 3297738613eSIra Weiny u8 end_port = rdma_end_port(device); 3307738613eSIra Weiny u8 port; 3315eb620c8SYosef Etigin 3327738613eSIra Weiny /** 3337738613eSIra Weiny * device->port_immutable is indexed directly by the port number to make 3347738613eSIra Weiny * access to this data as efficient as possible. 3357738613eSIra Weiny * 3367738613eSIra Weiny * Therefore port_immutable is declared as a 1 based array with 3377738613eSIra Weiny * potential empty slots at the beginning. 3387738613eSIra Weiny */ 3397738613eSIra Weiny device->port_immutable = kzalloc(sizeof(*device->port_immutable) 3407738613eSIra Weiny * (end_port + 1), 3415eb620c8SYosef Etigin GFP_KERNEL); 3427738613eSIra Weiny if (!device->port_immutable) 34355aeed06SJason Gunthorpe return -ENOMEM; 3445eb620c8SYosef Etigin 3457738613eSIra Weiny for (port = start_port; port <= end_port; ++port) { 3467738613eSIra Weiny ret = device->get_port_immutable(device, port, 3477738613eSIra Weiny &device->port_immutable[port]); 3485eb620c8SYosef Etigin if (ret) 3495eb620c8SYosef Etigin return ret; 35055aeed06SJason Gunthorpe 35155aeed06SJason Gunthorpe if (verify_immutable(device, port)) 35255aeed06SJason Gunthorpe return -EINVAL; 35355aeed06SJason Gunthorpe } 35455aeed06SJason Gunthorpe return 0; 3555eb620c8SYosef Etigin } 3565eb620c8SYosef Etigin 3579abb0d1bSLeon Romanovsky void ib_get_device_fw_str(struct ib_device *dev, char *str) 3585fa76c20SIra Weiny { 3595fa76c20SIra Weiny if (dev->get_dev_fw_str) 3609abb0d1bSLeon Romanovsky dev->get_dev_fw_str(dev, str); 3615fa76c20SIra Weiny else 3625fa76c20SIra Weiny str[0] = '\0'; 3635fa76c20SIra Weiny } 3645fa76c20SIra Weiny EXPORT_SYMBOL(ib_get_device_fw_str); 3655fa76c20SIra Weiny 366d291f1a6SDaniel Jurgens static int setup_port_pkey_list(struct ib_device *device) 367d291f1a6SDaniel Jurgens { 368d291f1a6SDaniel Jurgens int i; 369d291f1a6SDaniel Jurgens 370d291f1a6SDaniel Jurgens /** 371d291f1a6SDaniel Jurgens * device->port_pkey_list is indexed directly by the port number, 372d291f1a6SDaniel Jurgens * Therefore it is declared as a 1 based array with potential empty 373d291f1a6SDaniel Jurgens * slots at the beginning. 374d291f1a6SDaniel Jurgens */ 375d291f1a6SDaniel Jurgens device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, 376d291f1a6SDaniel Jurgens sizeof(*device->port_pkey_list), 377d291f1a6SDaniel Jurgens GFP_KERNEL); 378d291f1a6SDaniel Jurgens 379d291f1a6SDaniel Jurgens if (!device->port_pkey_list) 380d291f1a6SDaniel Jurgens return -ENOMEM; 381d291f1a6SDaniel Jurgens 382d291f1a6SDaniel Jurgens for (i = 0; i < (rdma_end_port(device) + 1); i++) { 383d291f1a6SDaniel Jurgens spin_lock_init(&device->port_pkey_list[i].list_lock); 384d291f1a6SDaniel Jurgens INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); 385d291f1a6SDaniel Jurgens } 386d291f1a6SDaniel Jurgens 387d291f1a6SDaniel Jurgens return 0; 388d291f1a6SDaniel Jurgens } 389d291f1a6SDaniel Jurgens 3908f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work) 3918f408ab6SDaniel Jurgens { 3928f408ab6SDaniel Jurgens struct ib_device *dev; 3938f408ab6SDaniel Jurgens 3948f408ab6SDaniel Jurgens down_read(&lists_rwsem); 3958f408ab6SDaniel Jurgens list_for_each_entry(dev, &device_list, core_list) { 3968f408ab6SDaniel Jurgens int i; 3978f408ab6SDaniel Jurgens 3988f408ab6SDaniel Jurgens for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { 3998f408ab6SDaniel Jurgens u64 sp; 4008f408ab6SDaniel Jurgens int ret = ib_get_cached_subnet_prefix(dev, 4018f408ab6SDaniel Jurgens i, 4028f408ab6SDaniel Jurgens &sp); 4038f408ab6SDaniel Jurgens 4048f408ab6SDaniel Jurgens WARN_ONCE(ret, 4058f408ab6SDaniel Jurgens "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", 4068f408ab6SDaniel Jurgens ret); 407a750cfdeSDaniel Jurgens if (!ret) 4088f408ab6SDaniel Jurgens ib_security_cache_change(dev, i, sp); 4098f408ab6SDaniel Jurgens } 4108f408ab6SDaniel Jurgens } 4118f408ab6SDaniel Jurgens up_read(&lists_rwsem); 4128f408ab6SDaniel Jurgens } 4138f408ab6SDaniel Jurgens 4148f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 4158f408ab6SDaniel Jurgens void *lsm_data) 4168f408ab6SDaniel Jurgens { 4178f408ab6SDaniel Jurgens if (event != LSM_POLICY_CHANGE) 4188f408ab6SDaniel Jurgens return NOTIFY_DONE; 4198f408ab6SDaniel Jurgens 4208f408ab6SDaniel Jurgens schedule_work(&ib_policy_change_work); 4218f408ab6SDaniel Jurgens 4228f408ab6SDaniel Jurgens return NOTIFY_OK; 4238f408ab6SDaniel Jurgens } 4248f408ab6SDaniel Jurgens 4251da177e4SLinus Torvalds /** 426ecc82c53SLeon Romanovsky * __dev_new_index - allocate an device index 427ecc82c53SLeon Romanovsky * 428ecc82c53SLeon Romanovsky * Returns a suitable unique value for a new device interface 429ecc82c53SLeon Romanovsky * number. It assumes that there are less than 2^32-1 ib devices 430ecc82c53SLeon Romanovsky * will be present in the system. 431ecc82c53SLeon Romanovsky */ 432ecc82c53SLeon Romanovsky static u32 __dev_new_index(void) 433ecc82c53SLeon Romanovsky { 434ecc82c53SLeon Romanovsky /* 435ecc82c53SLeon Romanovsky * The device index to allow stable naming. 436ecc82c53SLeon Romanovsky * Similar to struct net -> ifindex. 437ecc82c53SLeon Romanovsky */ 438ecc82c53SLeon Romanovsky static u32 index; 439ecc82c53SLeon Romanovsky 440ecc82c53SLeon Romanovsky for (;;) { 441ecc82c53SLeon Romanovsky if (!(++index)) 442ecc82c53SLeon Romanovsky index = 1; 443ecc82c53SLeon Romanovsky 444ecc82c53SLeon Romanovsky if (!__ib_device_get_by_index(index)) 445ecc82c53SLeon Romanovsky return index; 446ecc82c53SLeon Romanovsky } 447ecc82c53SLeon Romanovsky } 448ecc82c53SLeon Romanovsky 449ecc82c53SLeon Romanovsky /** 4501da177e4SLinus Torvalds * ib_register_device - Register an IB device with IB core 4511da177e4SLinus Torvalds * @device:Device to register 4521da177e4SLinus Torvalds * 4531da177e4SLinus Torvalds * Low-level drivers use ib_register_device() to register their 4541da177e4SLinus Torvalds * devices with the IB core. All registered clients will receive a 4551da177e4SLinus Torvalds * callback for each device that is added. @device must be allocated 4561da177e4SLinus Torvalds * with ib_alloc_device(). 4571da177e4SLinus Torvalds */ 4589a6edb60SRalph Campbell int ib_register_device(struct ib_device *device, 4599a6edb60SRalph Campbell int (*port_callback)(struct ib_device *, 4609a6edb60SRalph Campbell u8, struct kobject *)) 4611da177e4SLinus Torvalds { 4621da177e4SLinus Torvalds int ret; 463b8071ad8SDoug Ledford struct ib_client *client; 4643e153a93SIra Weiny struct ib_udata uhw = {.outlen = 0, .inlen = 0}; 46599db9494SBart Van Assche struct device *parent = device->dev.parent; 4661da177e4SLinus Torvalds 4670957c29fSBart Van Assche WARN_ON_ONCE(device->dma_device); 4680957c29fSBart Van Assche if (device->dev.dma_ops) { 4690957c29fSBart Van Assche /* 4700957c29fSBart Van Assche * The caller provided custom DMA operations. Copy the 4710957c29fSBart Van Assche * DMA-related fields that are used by e.g. dma_alloc_coherent() 4720957c29fSBart Van Assche * into device->dev. 4730957c29fSBart Van Assche */ 4740957c29fSBart Van Assche device->dma_device = &device->dev; 47502ee9da3SBart Van Assche if (!device->dev.dma_mask) { 47602ee9da3SBart Van Assche if (parent) 47799db9494SBart Van Assche device->dev.dma_mask = parent->dma_mask; 47802ee9da3SBart Van Assche else 47902ee9da3SBart Van Assche WARN_ON_ONCE(true); 48002ee9da3SBart Van Assche } 48102ee9da3SBart Van Assche if (!device->dev.coherent_dma_mask) { 48202ee9da3SBart Van Assche if (parent) 4830957c29fSBart Van Assche device->dev.coherent_dma_mask = 4840957c29fSBart Van Assche parent->coherent_dma_mask; 48502ee9da3SBart Van Assche else 48602ee9da3SBart Van Assche WARN_ON_ONCE(true); 48702ee9da3SBart Van Assche } 4880957c29fSBart Van Assche } else { 4890957c29fSBart Van Assche /* 4900957c29fSBart Van Assche * The caller did not provide custom DMA operations. Use the 4910957c29fSBart Van Assche * DMA mapping operations of the parent device. 4920957c29fSBart Van Assche */ 49302ee9da3SBart Van Assche WARN_ON_ONCE(!parent); 4940957c29fSBart Van Assche device->dma_device = parent; 4950957c29fSBart Van Assche } 4961da177e4SLinus Torvalds 49795ed644fSIngo Molnar mutex_lock(&device_mutex); 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds if (strchr(device->name, '%')) { 5001da177e4SLinus Torvalds ret = alloc_name(device->name); 5011da177e4SLinus Torvalds if (ret) 5021da177e4SLinus Torvalds goto out; 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvalds if (ib_device_check_mandatory(device)) { 5061da177e4SLinus Torvalds ret = -EINVAL; 5071da177e4SLinus Torvalds goto out; 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds 5107738613eSIra Weiny ret = read_port_immutable(device); 5115eb620c8SYosef Etigin if (ret) { 512aba25a3eSParav Pandit pr_warn("Couldn't create per port immutable data %s\n", 5135eb620c8SYosef Etigin device->name); 5145eb620c8SYosef Etigin goto out; 5155eb620c8SYosef Etigin } 5165eb620c8SYosef Etigin 517d291f1a6SDaniel Jurgens ret = setup_port_pkey_list(device); 518d291f1a6SDaniel Jurgens if (ret) { 519d291f1a6SDaniel Jurgens pr_warn("Couldn't create per port_pkey_list\n"); 520d291f1a6SDaniel Jurgens goto out; 521d291f1a6SDaniel Jurgens } 522d291f1a6SDaniel Jurgens 52303db3a2dSMatan Barak ret = ib_cache_setup_one(device); 52403db3a2dSMatan Barak if (ret) { 525aba25a3eSParav Pandit pr_warn("Couldn't set up InfiniBand P_Key/GID cache\n"); 5264be3a4faSParav Pandit goto port_cleanup; 52703db3a2dSMatan Barak } 52803db3a2dSMatan Barak 52943579b5fSParav Pandit ret = ib_device_register_rdmacg(device); 53043579b5fSParav Pandit if (ret) { 53143579b5fSParav Pandit pr_warn("Couldn't register device with rdma cgroup\n"); 5324be3a4faSParav Pandit goto cache_cleanup; 53343579b5fSParav Pandit } 53443579b5fSParav Pandit 5353e153a93SIra Weiny memset(&device->attrs, 0, sizeof(device->attrs)); 5363e153a93SIra Weiny ret = device->query_device(device, &device->attrs, &uhw); 5373e153a93SIra Weiny if (ret) { 538aba25a3eSParav Pandit pr_warn("Couldn't query the device attributes\n"); 5394be3a4faSParav Pandit goto cache_cleanup; 5403e153a93SIra Weiny } 5413e153a93SIra Weiny 5429a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 5431da177e4SLinus Torvalds if (ret) { 544aba25a3eSParav Pandit pr_warn("Couldn't register device %s with driver model\n", 5451da177e4SLinus Torvalds device->name); 5464be3a4faSParav Pandit goto cache_cleanup; 5471da177e4SLinus Torvalds } 5481da177e4SLinus Torvalds 5491da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 552b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 5531da177e4SLinus Torvalds client->add(device); 5541da177e4SLinus Torvalds 555ecc82c53SLeon Romanovsky device->index = __dev_new_index(); 5565aa44bb9SHaggai Eran down_write(&lists_rwsem); 5575aa44bb9SHaggai Eran list_add_tail(&device->core_list, &device_list); 5585aa44bb9SHaggai Eran up_write(&lists_rwsem); 5594be3a4faSParav Pandit mutex_unlock(&device_mutex); 5604be3a4faSParav Pandit return 0; 5614be3a4faSParav Pandit 5624be3a4faSParav Pandit cache_cleanup: 5634be3a4faSParav Pandit ib_cache_cleanup_one(device); 5644be3a4faSParav Pandit ib_cache_release_one(device); 5654be3a4faSParav Pandit port_cleanup: 5664be3a4faSParav Pandit kfree(device->port_immutable); 5671da177e4SLinus Torvalds out: 56895ed644fSIngo Molnar mutex_unlock(&device_mutex); 5691da177e4SLinus Torvalds return ret; 5701da177e4SLinus Torvalds } 5711da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds /** 5741da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 5751da177e4SLinus Torvalds * @device:Device to unregister 5761da177e4SLinus Torvalds * 5771da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 5781da177e4SLinus Torvalds */ 5791da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 5801da177e4SLinus Torvalds { 5811da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 5821da177e4SLinus Torvalds unsigned long flags; 5831da177e4SLinus Torvalds 58495ed644fSIngo Molnar mutex_lock(&device_mutex); 5851da177e4SLinus Torvalds 5865aa44bb9SHaggai Eran down_write(&lists_rwsem); 5875aa44bb9SHaggai Eran list_del(&device->core_list); 5887c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 5897c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 5907c1eb45aSHaggai Eran context->going_down = true; 5917c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 5927c1eb45aSHaggai Eran downgrade_write(&lists_rwsem); 5935aa44bb9SHaggai Eran 5947c1eb45aSHaggai Eran list_for_each_entry_safe(context, tmp, &device->client_data_list, 5957c1eb45aSHaggai Eran list) { 5967c1eb45aSHaggai Eran if (context->client->remove) 5977c1eb45aSHaggai Eran context->client->remove(device, context->data); 5987c1eb45aSHaggai Eran } 5997c1eb45aSHaggai Eran up_read(&lists_rwsem); 6001da177e4SLinus Torvalds 601*02d8883fSLeon Romanovsky rdma_restrack_clean(&device->res); 602*02d8883fSLeon Romanovsky 60343579b5fSParav Pandit ib_device_unregister_rdmacg(device); 6049206dff1SRoland Dreier ib_device_unregister_sysfs(device); 60506f8174aSShiraz Saleem 60606f8174aSShiraz Saleem mutex_unlock(&device_mutex); 60706f8174aSShiraz Saleem 60803db3a2dSMatan Barak ib_cache_cleanup_one(device); 6099206dff1SRoland Dreier 610d291f1a6SDaniel Jurgens ib_security_destroy_port_pkey_list(device); 611d291f1a6SDaniel Jurgens kfree(device->port_pkey_list); 612d291f1a6SDaniel Jurgens 6137c1eb45aSHaggai Eran down_write(&lists_rwsem); 6141da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 6151da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 6161da177e4SLinus Torvalds kfree(context); 6171da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 6187c1eb45aSHaggai Eran up_write(&lists_rwsem); 6191da177e4SLinus Torvalds 6201da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 6211da177e4SLinus Torvalds } 6221da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvalds /** 6251da177e4SLinus Torvalds * ib_register_client - Register an IB client 6261da177e4SLinus Torvalds * @client:Client to register 6271da177e4SLinus Torvalds * 6281da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 6291da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 6301da177e4SLinus Torvalds * device is added, each registered client's add method will be called 6311da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 6321da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 6331da177e4SLinus Torvalds * order that clients were registered). In addition, when 6341da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 6351da177e4SLinus Torvalds * callback for all devices already registered. 6361da177e4SLinus Torvalds */ 6371da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 6381da177e4SLinus Torvalds { 6391da177e4SLinus Torvalds struct ib_device *device; 6401da177e4SLinus Torvalds 64195ed644fSIngo Molnar mutex_lock(&device_mutex); 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 644b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 6451da177e4SLinus Torvalds client->add(device); 6461da177e4SLinus Torvalds 6475aa44bb9SHaggai Eran down_write(&lists_rwsem); 6485aa44bb9SHaggai Eran list_add_tail(&client->list, &client_list); 6495aa44bb9SHaggai Eran up_write(&lists_rwsem); 6505aa44bb9SHaggai Eran 65195ed644fSIngo Molnar mutex_unlock(&device_mutex); 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds return 0; 6541da177e4SLinus Torvalds } 6551da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds /** 6581da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 6591da177e4SLinus Torvalds * @client:Client to unregister 6601da177e4SLinus Torvalds * 6611da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 6621da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 6631da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 6641da177e4SLinus Torvalds */ 6651da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 6661da177e4SLinus Torvalds { 6671da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 6681da177e4SLinus Torvalds struct ib_device *device; 6691da177e4SLinus Torvalds unsigned long flags; 6701da177e4SLinus Torvalds 67195ed644fSIngo Molnar mutex_lock(&device_mutex); 6721da177e4SLinus Torvalds 6735aa44bb9SHaggai Eran down_write(&lists_rwsem); 6745aa44bb9SHaggai Eran list_del(&client->list); 6755aa44bb9SHaggai Eran up_write(&lists_rwsem); 6765aa44bb9SHaggai Eran 6771da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 6787c1eb45aSHaggai Eran struct ib_client_data *found_context = NULL; 6791da177e4SLinus Torvalds 6807c1eb45aSHaggai Eran down_write(&lists_rwsem); 6811da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 6821da177e4SLinus Torvalds list_for_each_entry_safe(context, tmp, &device->client_data_list, list) 6831da177e4SLinus Torvalds if (context->client == client) { 6847c1eb45aSHaggai Eran context->going_down = true; 6857c1eb45aSHaggai Eran found_context = context; 6867c1eb45aSHaggai Eran break; 6871da177e4SLinus Torvalds } 6881da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 6897c1eb45aSHaggai Eran up_write(&lists_rwsem); 6907c1eb45aSHaggai Eran 6917c1eb45aSHaggai Eran if (client->remove) 6927c1eb45aSHaggai Eran client->remove(device, found_context ? 6937c1eb45aSHaggai Eran found_context->data : NULL); 6947c1eb45aSHaggai Eran 6957c1eb45aSHaggai Eran if (!found_context) { 6967c1eb45aSHaggai Eran pr_warn("No client context found for %s/%s\n", 6977c1eb45aSHaggai Eran device->name, client->name); 6987c1eb45aSHaggai Eran continue; 6997c1eb45aSHaggai Eran } 7007c1eb45aSHaggai Eran 7017c1eb45aSHaggai Eran down_write(&lists_rwsem); 7027c1eb45aSHaggai Eran spin_lock_irqsave(&device->client_data_lock, flags); 7037c1eb45aSHaggai Eran list_del(&found_context->list); 7047c1eb45aSHaggai Eran kfree(found_context); 7057c1eb45aSHaggai Eran spin_unlock_irqrestore(&device->client_data_lock, flags); 7067c1eb45aSHaggai Eran up_write(&lists_rwsem); 7071da177e4SLinus Torvalds } 7081da177e4SLinus Torvalds 70995ed644fSIngo Molnar mutex_unlock(&device_mutex); 7101da177e4SLinus Torvalds } 7111da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 7121da177e4SLinus Torvalds 7131da177e4SLinus Torvalds /** 7141da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 7151da177e4SLinus Torvalds * @device:Device to get context for 7161da177e4SLinus Torvalds * @client:Client to get context for 7171da177e4SLinus Torvalds * 7181da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 7191da177e4SLinus Torvalds * ib_set_client_data(). 7201da177e4SLinus Torvalds */ 7211da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 7221da177e4SLinus Torvalds { 7231da177e4SLinus Torvalds struct ib_client_data *context; 7241da177e4SLinus Torvalds void *ret = NULL; 7251da177e4SLinus Torvalds unsigned long flags; 7261da177e4SLinus Torvalds 7271da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 7281da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 7291da177e4SLinus Torvalds if (context->client == client) { 7301da177e4SLinus Torvalds ret = context->data; 7311da177e4SLinus Torvalds break; 7321da177e4SLinus Torvalds } 7331da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds return ret; 7361da177e4SLinus Torvalds } 7371da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds /** 7409cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 7411da177e4SLinus Torvalds * @device:Device to set context for 7421da177e4SLinus Torvalds * @client:Client to set context for 7431da177e4SLinus Torvalds * @data:Context to set 7441da177e4SLinus Torvalds * 7451da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 7461da177e4SLinus Torvalds * ib_get_client_data(). 7471da177e4SLinus Torvalds */ 7481da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 7491da177e4SLinus Torvalds void *data) 7501da177e4SLinus Torvalds { 7511da177e4SLinus Torvalds struct ib_client_data *context; 7521da177e4SLinus Torvalds unsigned long flags; 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvalds spin_lock_irqsave(&device->client_data_lock, flags); 7551da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 7561da177e4SLinus Torvalds if (context->client == client) { 7571da177e4SLinus Torvalds context->data = data; 7581da177e4SLinus Torvalds goto out; 7591da177e4SLinus Torvalds } 7601da177e4SLinus Torvalds 761aba25a3eSParav Pandit pr_warn("No client context found for %s/%s\n", 7621da177e4SLinus Torvalds device->name, client->name); 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds out: 7651da177e4SLinus Torvalds spin_unlock_irqrestore(&device->client_data_lock, flags); 7661da177e4SLinus Torvalds } 7671da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds /** 7701da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 7711da177e4SLinus Torvalds * @event_handler:Handler to register 7721da177e4SLinus Torvalds * 7731da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 7741da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 7751da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 7761da177e4SLinus Torvalds * callback may occur in interrupt context. 7771da177e4SLinus Torvalds */ 778dcc9881eSLeon Romanovsky void ib_register_event_handler(struct ib_event_handler *event_handler) 7791da177e4SLinus Torvalds { 7801da177e4SLinus Torvalds unsigned long flags; 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 7831da177e4SLinus Torvalds list_add_tail(&event_handler->list, 7841da177e4SLinus Torvalds &event_handler->device->event_handler_list); 7851da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvalds /** 7901da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 7911da177e4SLinus Torvalds * @event_handler:Handler to unregister 7921da177e4SLinus Torvalds * 7931da177e4SLinus Torvalds * Unregister an event handler registered with 7941da177e4SLinus Torvalds * ib_register_event_handler(). 7951da177e4SLinus Torvalds */ 796dcc9881eSLeon Romanovsky void ib_unregister_event_handler(struct ib_event_handler *event_handler) 7971da177e4SLinus Torvalds { 7981da177e4SLinus Torvalds unsigned long flags; 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8011da177e4SLinus Torvalds list_del(&event_handler->list); 8021da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8031da177e4SLinus Torvalds } 8041da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds /** 8071da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 8081da177e4SLinus Torvalds * @event:Event to dispatch 8091da177e4SLinus Torvalds * 8101da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 8111da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 8121da177e4SLinus Torvalds * occurs. 8131da177e4SLinus Torvalds */ 8141da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 8151da177e4SLinus Torvalds { 8161da177e4SLinus Torvalds unsigned long flags; 8171da177e4SLinus Torvalds struct ib_event_handler *handler; 8181da177e4SLinus Torvalds 8191da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 8221da177e4SLinus Torvalds handler->handler(handler, event); 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 8251da177e4SLinus Torvalds } 8261da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds /** 8291da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 8301da177e4SLinus Torvalds * @device:Device to query 8311da177e4SLinus Torvalds * @port_num:Port number to query 8321da177e4SLinus Torvalds * @port_attr:Port attributes 8331da177e4SLinus Torvalds * 8341da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 8351da177e4SLinus Torvalds * @port_attr pointer. 8361da177e4SLinus Torvalds */ 8371da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 8381da177e4SLinus Torvalds u8 port_num, 8391da177e4SLinus Torvalds struct ib_port_attr *port_attr) 8401da177e4SLinus Torvalds { 841fad61ad4SEli Cohen union ib_gid gid; 842fad61ad4SEli Cohen int err; 843fad61ad4SEli Cohen 84424dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 845116c0074SRoland Dreier return -EINVAL; 846116c0074SRoland Dreier 847fad61ad4SEli Cohen memset(port_attr, 0, sizeof(*port_attr)); 848fad61ad4SEli Cohen err = device->query_port(device, port_num, port_attr); 849fad61ad4SEli Cohen if (err || port_attr->subnet_prefix) 850fad61ad4SEli Cohen return err; 851fad61ad4SEli Cohen 852d7012467SEli Cohen if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) 853d7012467SEli Cohen return 0; 854d7012467SEli Cohen 855fad61ad4SEli Cohen err = ib_query_gid(device, port_num, 0, &gid, NULL); 856fad61ad4SEli Cohen if (err) 857fad61ad4SEli Cohen return err; 858fad61ad4SEli Cohen 859fad61ad4SEli Cohen port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); 860fad61ad4SEli Cohen return 0; 8611da177e4SLinus Torvalds } 8621da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds /** 8651da177e4SLinus Torvalds * ib_query_gid - Get GID table entry 8661da177e4SLinus Torvalds * @device:Device to query 8671da177e4SLinus Torvalds * @port_num:Port number to query 8681da177e4SLinus Torvalds * @index:GID table index to query 8691da177e4SLinus Torvalds * @gid:Returned GID 87055ee3ab2SMatan Barak * @attr: Returned GID attributes related to this GID index (only in RoCE). 87155ee3ab2SMatan Barak * NULL means ignore. 8721da177e4SLinus Torvalds * 8731da177e4SLinus Torvalds * ib_query_gid() fetches the specified GID table entry. 8741da177e4SLinus Torvalds */ 8751da177e4SLinus Torvalds int ib_query_gid(struct ib_device *device, 87655ee3ab2SMatan Barak u8 port_num, int index, union ib_gid *gid, 87755ee3ab2SMatan Barak struct ib_gid_attr *attr) 8781da177e4SLinus Torvalds { 87903db3a2dSMatan Barak if (rdma_cap_roce_gid_table(device, port_num)) 88055ee3ab2SMatan Barak return ib_get_cached_gid(device, port_num, index, gid, attr); 88155ee3ab2SMatan Barak 88255ee3ab2SMatan Barak if (attr) 88355ee3ab2SMatan Barak return -EINVAL; 88403db3a2dSMatan Barak 8851da177e4SLinus Torvalds return device->query_gid(device, port_num, index, gid); 8861da177e4SLinus Torvalds } 8871da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_gid); 8881da177e4SLinus Torvalds 8891da177e4SLinus Torvalds /** 89003db3a2dSMatan Barak * ib_enum_roce_netdev - enumerate all RoCE ports 89103db3a2dSMatan Barak * @ib_dev : IB device we want to query 89203db3a2dSMatan Barak * @filter: Should we call the callback? 89303db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 89403db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 89503db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 89603db3a2dSMatan Barak * 89703db3a2dSMatan Barak * Enumerates all of the physical RoCE ports of ib_dev 89803db3a2dSMatan Barak * which are related to netdevice and calls callback() on each 89903db3a2dSMatan Barak * device for which filter() function returns non zero. 90003db3a2dSMatan Barak */ 90103db3a2dSMatan Barak void ib_enum_roce_netdev(struct ib_device *ib_dev, 90203db3a2dSMatan Barak roce_netdev_filter filter, 90303db3a2dSMatan Barak void *filter_cookie, 90403db3a2dSMatan Barak roce_netdev_callback cb, 90503db3a2dSMatan Barak void *cookie) 90603db3a2dSMatan Barak { 90703db3a2dSMatan Barak u8 port; 90803db3a2dSMatan Barak 90903db3a2dSMatan Barak for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); 91003db3a2dSMatan Barak port++) 91103db3a2dSMatan Barak if (rdma_protocol_roce(ib_dev, port)) { 91203db3a2dSMatan Barak struct net_device *idev = NULL; 91303db3a2dSMatan Barak 91403db3a2dSMatan Barak if (ib_dev->get_netdev) 91503db3a2dSMatan Barak idev = ib_dev->get_netdev(ib_dev, port); 91603db3a2dSMatan Barak 91703db3a2dSMatan Barak if (idev && 91803db3a2dSMatan Barak idev->reg_state >= NETREG_UNREGISTERED) { 91903db3a2dSMatan Barak dev_put(idev); 92003db3a2dSMatan Barak idev = NULL; 92103db3a2dSMatan Barak } 92203db3a2dSMatan Barak 92303db3a2dSMatan Barak if (filter(ib_dev, port, idev, filter_cookie)) 92403db3a2dSMatan Barak cb(ib_dev, port, idev, cookie); 92503db3a2dSMatan Barak 92603db3a2dSMatan Barak if (idev) 92703db3a2dSMatan Barak dev_put(idev); 92803db3a2dSMatan Barak } 92903db3a2dSMatan Barak } 93003db3a2dSMatan Barak 93103db3a2dSMatan Barak /** 93203db3a2dSMatan Barak * ib_enum_all_roce_netdevs - enumerate all RoCE devices 93303db3a2dSMatan Barak * @filter: Should we call the callback? 93403db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 93503db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 93603db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 93703db3a2dSMatan Barak * 93803db3a2dSMatan Barak * Enumerates all RoCE devices' physical ports which are related 93903db3a2dSMatan Barak * to netdevices and calls callback() on each device for which 94003db3a2dSMatan Barak * filter() function returns non zero. 94103db3a2dSMatan Barak */ 94203db3a2dSMatan Barak void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 94303db3a2dSMatan Barak void *filter_cookie, 94403db3a2dSMatan Barak roce_netdev_callback cb, 94503db3a2dSMatan Barak void *cookie) 94603db3a2dSMatan Barak { 94703db3a2dSMatan Barak struct ib_device *dev; 94803db3a2dSMatan Barak 94903db3a2dSMatan Barak down_read(&lists_rwsem); 95003db3a2dSMatan Barak list_for_each_entry(dev, &device_list, core_list) 95103db3a2dSMatan Barak ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); 95203db3a2dSMatan Barak up_read(&lists_rwsem); 95303db3a2dSMatan Barak } 95403db3a2dSMatan Barak 95503db3a2dSMatan Barak /** 9568030c835SLeon Romanovsky * ib_enum_all_devs - enumerate all ib_devices 9578030c835SLeon Romanovsky * @cb: Callback to call for each found ib_device 9588030c835SLeon Romanovsky * 9598030c835SLeon Romanovsky * Enumerates all ib_devices and calls callback() on each device. 9608030c835SLeon Romanovsky */ 9618030c835SLeon Romanovsky int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 9628030c835SLeon Romanovsky struct netlink_callback *cb) 9638030c835SLeon Romanovsky { 9648030c835SLeon Romanovsky struct ib_device *dev; 9658030c835SLeon Romanovsky unsigned int idx = 0; 9668030c835SLeon Romanovsky int ret = 0; 9678030c835SLeon Romanovsky 9688030c835SLeon Romanovsky down_read(&lists_rwsem); 9698030c835SLeon Romanovsky list_for_each_entry(dev, &device_list, core_list) { 9708030c835SLeon Romanovsky ret = nldev_cb(dev, skb, cb, idx); 9718030c835SLeon Romanovsky if (ret) 9728030c835SLeon Romanovsky break; 9738030c835SLeon Romanovsky idx++; 9748030c835SLeon Romanovsky } 9758030c835SLeon Romanovsky 9768030c835SLeon Romanovsky up_read(&lists_rwsem); 9778030c835SLeon Romanovsky return ret; 9788030c835SLeon Romanovsky } 9798030c835SLeon Romanovsky 9808030c835SLeon Romanovsky /** 9811da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 9821da177e4SLinus Torvalds * @device:Device to query 9831da177e4SLinus Torvalds * @port_num:Port number to query 9841da177e4SLinus Torvalds * @index:P_Key table index to query 9851da177e4SLinus Torvalds * @pkey:Returned P_Key 9861da177e4SLinus Torvalds * 9871da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 9881da177e4SLinus Torvalds */ 9891da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 9901da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 9911da177e4SLinus Torvalds { 9921da177e4SLinus Torvalds return device->query_pkey(device, port_num, index, pkey); 9931da177e4SLinus Torvalds } 9941da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds /** 9971da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 9981da177e4SLinus Torvalds * @device:Device to modify 9991da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 10001da177e4SLinus Torvalds * @device_modify:New attribute values 10011da177e4SLinus Torvalds * 10021da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 10031da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 10041da177e4SLinus Torvalds */ 10051da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 10061da177e4SLinus Torvalds int device_modify_mask, 10071da177e4SLinus Torvalds struct ib_device_modify *device_modify) 10081da177e4SLinus Torvalds { 100910e1b54bSBart Van Assche if (!device->modify_device) 101010e1b54bSBart Van Assche return -ENOSYS; 101110e1b54bSBart Van Assche 10121da177e4SLinus Torvalds return device->modify_device(device, device_modify_mask, 10131da177e4SLinus Torvalds device_modify); 10141da177e4SLinus Torvalds } 10151da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 10161da177e4SLinus Torvalds 10171da177e4SLinus Torvalds /** 10181da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 10191da177e4SLinus Torvalds * @device: The device to modify. 10201da177e4SLinus Torvalds * @port_num: The number of the port to modify. 10211da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 10221da177e4SLinus Torvalds * to change. 10231da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 10241da177e4SLinus Torvalds * 10251da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 10261da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 10271da177e4SLinus Torvalds */ 10281da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 10291da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 10301da177e4SLinus Torvalds struct ib_port_modify *port_modify) 10311da177e4SLinus Torvalds { 103261e0962dSSelvin Xavier int rc; 103310e1b54bSBart Van Assche 103424dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 1035116c0074SRoland Dreier return -EINVAL; 1036116c0074SRoland Dreier 103761e0962dSSelvin Xavier if (device->modify_port) 103861e0962dSSelvin Xavier rc = device->modify_port(device, port_num, port_modify_mask, 10391da177e4SLinus Torvalds port_modify); 104061e0962dSSelvin Xavier else 104161e0962dSSelvin Xavier rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; 104261e0962dSSelvin Xavier return rc; 10431da177e4SLinus Torvalds } 10441da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 10451da177e4SLinus Torvalds 10465eb620c8SYosef Etigin /** 10475eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 1048dbb12562SParav Pandit * a specified GID value occurs. Its searches only for IB link layer. 10495eb620c8SYosef Etigin * @device: The device to query. 10505eb620c8SYosef Etigin * @gid: The GID value to search for. 105155ee3ab2SMatan Barak * @ndev: The ndev related to the GID to search for. 10525eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 10535eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 10545eb620c8SYosef Etigin * parameter may be NULL. 10555eb620c8SYosef Etigin */ 10565eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 1057dbb12562SParav Pandit struct net_device *ndev, u8 *port_num, u16 *index) 10585eb620c8SYosef Etigin { 10595eb620c8SYosef Etigin union ib_gid tmp_gid; 10605eb620c8SYosef Etigin int ret, port, i; 10615eb620c8SYosef Etigin 10620cf18d77SIra Weiny for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { 1063dbb12562SParav Pandit if (rdma_cap_roce_gid_table(device, port)) 1064b39ffa1dSMatan Barak continue; 1065b39ffa1dSMatan Barak 10667738613eSIra Weiny for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { 106755ee3ab2SMatan Barak ret = ib_query_gid(device, port, i, &tmp_gid, NULL); 10685eb620c8SYosef Etigin if (ret) 10695eb620c8SYosef Etigin return ret; 10705eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 10715eb620c8SYosef Etigin *port_num = port; 10725eb620c8SYosef Etigin if (index) 10735eb620c8SYosef Etigin *index = i; 10745eb620c8SYosef Etigin return 0; 10755eb620c8SYosef Etigin } 10765eb620c8SYosef Etigin } 10775eb620c8SYosef Etigin } 10785eb620c8SYosef Etigin 10795eb620c8SYosef Etigin return -ENOENT; 10805eb620c8SYosef Etigin } 10815eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 10825eb620c8SYosef Etigin 10835eb620c8SYosef Etigin /** 10845eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 10855eb620c8SYosef Etigin * PKey value occurs. 10865eb620c8SYosef Etigin * @device: The device to query. 10875eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 10885eb620c8SYosef Etigin * @pkey: The PKey value to search for. 10895eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 10905eb620c8SYosef Etigin */ 10915eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 10925eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 10935eb620c8SYosef Etigin { 10945eb620c8SYosef Etigin int ret, i; 10955eb620c8SYosef Etigin u16 tmp_pkey; 1096ff7166c4SJack Morgenstein int partial_ix = -1; 10975eb620c8SYosef Etigin 10987738613eSIra Weiny for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { 10995eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 11005eb620c8SYosef Etigin if (ret) 11015eb620c8SYosef Etigin return ret; 110236026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 1103ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 1104ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 11055eb620c8SYosef Etigin *index = i; 11065eb620c8SYosef Etigin return 0; 11075eb620c8SYosef Etigin } 1108ff7166c4SJack Morgenstein if (partial_ix < 0) 1109ff7166c4SJack Morgenstein partial_ix = i; 1110ff7166c4SJack Morgenstein } 11115eb620c8SYosef Etigin } 11125eb620c8SYosef Etigin 1113ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 1114ff7166c4SJack Morgenstein if (partial_ix >= 0) { 1115ff7166c4SJack Morgenstein *index = partial_ix; 1116ff7166c4SJack Morgenstein return 0; 1117ff7166c4SJack Morgenstein } 11185eb620c8SYosef Etigin return -ENOENT; 11195eb620c8SYosef Etigin } 11205eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 11215eb620c8SYosef Etigin 11229268f72dSYotam Kenneth /** 11239268f72dSYotam Kenneth * ib_get_net_dev_by_params() - Return the appropriate net_dev 11249268f72dSYotam Kenneth * for a received CM request 11259268f72dSYotam Kenneth * @dev: An RDMA device on which the request has been received. 11269268f72dSYotam Kenneth * @port: Port number on the RDMA device. 11279268f72dSYotam Kenneth * @pkey: The Pkey the request came on. 11289268f72dSYotam Kenneth * @gid: A GID that the net_dev uses to communicate. 11299268f72dSYotam Kenneth * @addr: Contains the IP address that the request specified as its 11309268f72dSYotam Kenneth * destination. 11319268f72dSYotam Kenneth */ 11329268f72dSYotam Kenneth struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, 11339268f72dSYotam Kenneth u8 port, 11349268f72dSYotam Kenneth u16 pkey, 11359268f72dSYotam Kenneth const union ib_gid *gid, 11369268f72dSYotam Kenneth const struct sockaddr *addr) 11379268f72dSYotam Kenneth { 11389268f72dSYotam Kenneth struct net_device *net_dev = NULL; 11399268f72dSYotam Kenneth struct ib_client_data *context; 11409268f72dSYotam Kenneth 11419268f72dSYotam Kenneth if (!rdma_protocol_ib(dev, port)) 11429268f72dSYotam Kenneth return NULL; 11439268f72dSYotam Kenneth 11449268f72dSYotam Kenneth down_read(&lists_rwsem); 11459268f72dSYotam Kenneth 11469268f72dSYotam Kenneth list_for_each_entry(context, &dev->client_data_list, list) { 11479268f72dSYotam Kenneth struct ib_client *client = context->client; 11489268f72dSYotam Kenneth 11499268f72dSYotam Kenneth if (context->going_down) 11509268f72dSYotam Kenneth continue; 11519268f72dSYotam Kenneth 11529268f72dSYotam Kenneth if (client->get_net_dev_by_params) { 11539268f72dSYotam Kenneth net_dev = client->get_net_dev_by_params(dev, port, pkey, 11549268f72dSYotam Kenneth gid, addr, 11559268f72dSYotam Kenneth context->data); 11569268f72dSYotam Kenneth if (net_dev) 11579268f72dSYotam Kenneth break; 11589268f72dSYotam Kenneth } 11599268f72dSYotam Kenneth } 11609268f72dSYotam Kenneth 11619268f72dSYotam Kenneth up_read(&lists_rwsem); 11629268f72dSYotam Kenneth 11639268f72dSYotam Kenneth return net_dev; 11649268f72dSYotam Kenneth } 11659268f72dSYotam Kenneth EXPORT_SYMBOL(ib_get_net_dev_by_params); 11669268f72dSYotam Kenneth 1167d0e312feSLeon Romanovsky static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { 1168735c631aSMark Bloch [RDMA_NL_LS_OP_RESOLVE] = { 1169647c75acSLeon Romanovsky .doit = ib_nl_handle_resolve_resp, 1170e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1171e3a2b93dSLeon Romanovsky }, 1172735c631aSMark Bloch [RDMA_NL_LS_OP_SET_TIMEOUT] = { 1173647c75acSLeon Romanovsky .doit = ib_nl_handle_set_timeout, 1174e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1175e3a2b93dSLeon Romanovsky }, 1176ae43f828SMark Bloch [RDMA_NL_LS_OP_IP_RESOLVE] = { 1177647c75acSLeon Romanovsky .doit = ib_nl_handle_ip_res_resp, 1178e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1179e3a2b93dSLeon Romanovsky }, 1180735c631aSMark Bloch }; 1181735c631aSMark Bloch 11821da177e4SLinus Torvalds static int __init ib_core_init(void) 11831da177e4SLinus Torvalds { 11841da177e4SLinus Torvalds int ret; 11851da177e4SLinus Torvalds 1186f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 1187f0626710STejun Heo if (!ib_wq) 1188f0626710STejun Heo return -ENOMEM; 1189f0626710STejun Heo 119014d3a3b2SChristoph Hellwig ib_comp_wq = alloc_workqueue("ib-comp-wq", 1191b7363e67SSagi Grimberg WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); 119214d3a3b2SChristoph Hellwig if (!ib_comp_wq) { 119314d3a3b2SChristoph Hellwig ret = -ENOMEM; 119414d3a3b2SChristoph Hellwig goto err; 119514d3a3b2SChristoph Hellwig } 119614d3a3b2SChristoph Hellwig 119755aeed06SJason Gunthorpe ret = class_register(&ib_class); 1198fd75c789SNir Muchtar if (ret) { 1199aba25a3eSParav Pandit pr_warn("Couldn't create InfiniBand device class\n"); 120014d3a3b2SChristoph Hellwig goto err_comp; 1201fd75c789SNir Muchtar } 12021da177e4SLinus Torvalds 1203c9901724SLeon Romanovsky ret = rdma_nl_init(); 12041da177e4SLinus Torvalds if (ret) { 1205c9901724SLeon Romanovsky pr_warn("Couldn't init IB netlink interface: err %d\n", ret); 1206fd75c789SNir Muchtar goto err_sysfs; 12071da177e4SLinus Torvalds } 12081da177e4SLinus Torvalds 1209e3f20f02SLeon Romanovsky ret = addr_init(); 1210e3f20f02SLeon Romanovsky if (ret) { 1211e3f20f02SLeon Romanovsky pr_warn("Could't init IB address resolution\n"); 1212e3f20f02SLeon Romanovsky goto err_ibnl; 1213e3f20f02SLeon Romanovsky } 1214e3f20f02SLeon Romanovsky 12154c2cb422SMark Bloch ret = ib_mad_init(); 12164c2cb422SMark Bloch if (ret) { 12174c2cb422SMark Bloch pr_warn("Couldn't init IB MAD\n"); 12184c2cb422SMark Bloch goto err_addr; 12194c2cb422SMark Bloch } 12204c2cb422SMark Bloch 1221c2e49c92SMark Bloch ret = ib_sa_init(); 1222c2e49c92SMark Bloch if (ret) { 1223c2e49c92SMark Bloch pr_warn("Couldn't init SA\n"); 1224c2e49c92SMark Bloch goto err_mad; 1225c2e49c92SMark Bloch } 1226c2e49c92SMark Bloch 12278f408ab6SDaniel Jurgens ret = register_lsm_notifier(&ibdev_lsm_nb); 12288f408ab6SDaniel Jurgens if (ret) { 12298f408ab6SDaniel Jurgens pr_warn("Couldn't register LSM notifier. ret %d\n", ret); 1230c9901724SLeon Romanovsky goto err_sa; 12318f408ab6SDaniel Jurgens } 12328f408ab6SDaniel Jurgens 12336c80b41aSLeon Romanovsky nldev_init(); 1234c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); 123503db3a2dSMatan Barak ib_cache_setup(); 1236b2cbae2cSRoland Dreier 1237fd75c789SNir Muchtar return 0; 1238fd75c789SNir Muchtar 1239735c631aSMark Bloch err_sa: 1240735c631aSMark Bloch ib_sa_cleanup(); 1241c2e49c92SMark Bloch err_mad: 1242c2e49c92SMark Bloch ib_mad_cleanup(); 12434c2cb422SMark Bloch err_addr: 12444c2cb422SMark Bloch addr_cleanup(); 1245e3f20f02SLeon Romanovsky err_ibnl: 1246c9901724SLeon Romanovsky rdma_nl_exit(); 1247fd75c789SNir Muchtar err_sysfs: 124855aeed06SJason Gunthorpe class_unregister(&ib_class); 124914d3a3b2SChristoph Hellwig err_comp: 125014d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1251fd75c789SNir Muchtar err: 1252fd75c789SNir Muchtar destroy_workqueue(ib_wq); 12531da177e4SLinus Torvalds return ret; 12541da177e4SLinus Torvalds } 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 12571da177e4SLinus Torvalds { 12581da177e4SLinus Torvalds ib_cache_cleanup(); 12596c80b41aSLeon Romanovsky nldev_exit(); 1260c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_LS); 1261c9901724SLeon Romanovsky unregister_lsm_notifier(&ibdev_lsm_nb); 1262c2e49c92SMark Bloch ib_sa_cleanup(); 12634c2cb422SMark Bloch ib_mad_cleanup(); 1264e3f20f02SLeon Romanovsky addr_cleanup(); 1265c9901724SLeon Romanovsky rdma_nl_exit(); 126655aeed06SJason Gunthorpe class_unregister(&ib_class); 126714d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1268f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 1269f0626710STejun Heo destroy_workqueue(ib_wq); 12701da177e4SLinus Torvalds } 12711da177e4SLinus Torvalds 1272e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); 1273e3bf14bdSJason Gunthorpe 1274a9cd1a67SDmitry Monakhov subsys_initcall(ib_core_init); 12751da177e4SLinus Torvalds module_exit(ib_core_cleanup); 1276