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; 64f794809aSJack 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)) { 12643c7c851SJason Gunthorpe dev_warn(&device->dev, 12743c7c851SJason Gunthorpe "Device is missing mandatory function %s\n", 12843c7c851SJason Gunthorpe mandatory_table[i].name); 1291da177e4SLinus Torvalds return -EINVAL; 1301da177e4SLinus Torvalds } 1311da177e4SLinus Torvalds } 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds return 0; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 136f8978bd9SLeon Romanovsky static struct ib_device *__ib_device_get_by_index(u32 index) 137ecc82c53SLeon Romanovsky { 138ecc82c53SLeon Romanovsky struct ib_device *device; 139ecc82c53SLeon Romanovsky 140ecc82c53SLeon Romanovsky list_for_each_entry(device, &device_list, core_list) 141ecc82c53SLeon Romanovsky if (device->index == index) 142ecc82c53SLeon Romanovsky return device; 143ecc82c53SLeon Romanovsky 144ecc82c53SLeon Romanovsky return NULL; 145ecc82c53SLeon Romanovsky } 146ecc82c53SLeon Romanovsky 147f8978bd9SLeon Romanovsky /* 14801b67117SParav Pandit * Caller must perform ib_device_put() to return the device reference count 14901b67117SParav Pandit * when ib_device_get_by_index() returns valid device pointer. 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); 15701b67117SParav Pandit if (device) { 15801b67117SParav Pandit /* Do not return a device if unregistration has started. */ 15901b67117SParav Pandit if (!refcount_inc_not_zero(&device->refcount)) 16001b67117SParav Pandit device = NULL; 16101b67117SParav Pandit } 162f8978bd9SLeon Romanovsky up_read(&lists_rwsem); 163f8978bd9SLeon Romanovsky return device; 164f8978bd9SLeon Romanovsky } 165f8978bd9SLeon Romanovsky 16601b67117SParav Pandit void ib_device_put(struct ib_device *device) 16701b67117SParav Pandit { 16801b67117SParav Pandit if (refcount_dec_and_test(&device->refcount)) 16901b67117SParav Pandit complete(&device->unreg_completion); 17001b67117SParav Pandit } 17101b67117SParav Pandit 1721da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1731da177e4SLinus Torvalds { 1741da177e4SLinus Torvalds struct ib_device *device; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 177896de009SJason Gunthorpe if (!strcmp(name, dev_name(&device->dev))) 1781da177e4SLinus Torvalds return device; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds return NULL; 1811da177e4SLinus Torvalds } 1821da177e4SLinus Torvalds 183d21943ddSLeon Romanovsky int ib_device_rename(struct ib_device *ibdev, const char *name) 184d21943ddSLeon Romanovsky { 185d21943ddSLeon Romanovsky struct ib_device *device; 186d21943ddSLeon Romanovsky int ret = 0; 187d21943ddSLeon Romanovsky 188d21943ddSLeon Romanovsky if (!strcmp(name, dev_name(&ibdev->dev))) 189d21943ddSLeon Romanovsky return ret; 190d21943ddSLeon Romanovsky 191d21943ddSLeon Romanovsky mutex_lock(&device_mutex); 192d21943ddSLeon Romanovsky list_for_each_entry(device, &device_list, core_list) { 193d21943ddSLeon Romanovsky if (!strcmp(name, dev_name(&device->dev))) { 194d21943ddSLeon Romanovsky ret = -EEXIST; 195d21943ddSLeon Romanovsky goto out; 196d21943ddSLeon Romanovsky } 197d21943ddSLeon Romanovsky } 198d21943ddSLeon Romanovsky 199d21943ddSLeon Romanovsky ret = device_rename(&ibdev->dev, name); 200d21943ddSLeon Romanovsky if (ret) 201d21943ddSLeon Romanovsky goto out; 202d21943ddSLeon Romanovsky strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX); 203d21943ddSLeon Romanovsky out: 204d21943ddSLeon Romanovsky mutex_unlock(&device_mutex); 205d21943ddSLeon Romanovsky return ret; 206d21943ddSLeon Romanovsky } 207d21943ddSLeon Romanovsky 208e349f858SJason Gunthorpe static int alloc_name(struct ib_device *ibdev, const char *name) 2091da177e4SLinus Torvalds { 21065d470b3SRoland Dreier unsigned long *inuse; 2111da177e4SLinus Torvalds struct ib_device *device; 2121da177e4SLinus Torvalds int i; 2131da177e4SLinus Torvalds 21465d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 2151da177e4SLinus Torvalds if (!inuse) 2161da177e4SLinus Torvalds return -ENOMEM; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 219e349f858SJason Gunthorpe char buf[IB_DEVICE_NAME_MAX]; 220e349f858SJason Gunthorpe 221896de009SJason Gunthorpe if (sscanf(dev_name(&device->dev), name, &i) != 1) 2221da177e4SLinus Torvalds continue; 2231da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 2241da177e4SLinus Torvalds continue; 2251da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 226e349f858SJason Gunthorpe if (!strcmp(buf, dev_name(&device->dev))) 2271da177e4SLinus Torvalds set_bit(i, inuse); 2281da177e4SLinus Torvalds } 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 2311da177e4SLinus Torvalds free_page((unsigned long) inuse); 2321da177e4SLinus Torvalds 233e349f858SJason Gunthorpe return dev_set_name(&ibdev->dev, name, i); 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 23655aeed06SJason Gunthorpe static void ib_device_release(struct device *device) 23755aeed06SJason Gunthorpe { 23855aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 23955aeed06SJason Gunthorpe 2404be3a4faSParav Pandit WARN_ON(dev->reg_state == IB_DEV_REGISTERED); 2414be3a4faSParav Pandit if (dev->reg_state == IB_DEV_UNREGISTERED) { 2424be3a4faSParav Pandit /* 2434be3a4faSParav Pandit * In IB_DEV_UNINITIALIZED state, cache or port table 2444be3a4faSParav Pandit * is not even created. Free cache and port table only when 2454be3a4faSParav Pandit * device reaches UNREGISTERED state. 2464be3a4faSParav Pandit */ 24703db3a2dSMatan Barak ib_cache_release_one(dev); 24855aeed06SJason Gunthorpe kfree(dev->port_immutable); 2494be3a4faSParav Pandit } 25055aeed06SJason Gunthorpe kfree(dev); 25155aeed06SJason Gunthorpe } 25255aeed06SJason Gunthorpe 25355aeed06SJason Gunthorpe static int ib_device_uevent(struct device *device, 25455aeed06SJason Gunthorpe struct kobj_uevent_env *env) 25555aeed06SJason Gunthorpe { 256896de009SJason Gunthorpe if (add_uevent_var(env, "NAME=%s", dev_name(device))) 25755aeed06SJason Gunthorpe return -ENOMEM; 25855aeed06SJason Gunthorpe 25955aeed06SJason Gunthorpe /* 26055aeed06SJason Gunthorpe * It would be nice to pass the node GUID with the event... 26155aeed06SJason Gunthorpe */ 26255aeed06SJason Gunthorpe 26355aeed06SJason Gunthorpe return 0; 26455aeed06SJason Gunthorpe } 26555aeed06SJason Gunthorpe 26655aeed06SJason Gunthorpe static struct class ib_class = { 26755aeed06SJason Gunthorpe .name = "infiniband", 26855aeed06SJason Gunthorpe .dev_release = ib_device_release, 26955aeed06SJason Gunthorpe .dev_uevent = ib_device_uevent, 27055aeed06SJason Gunthorpe }; 27155aeed06SJason Gunthorpe 2721da177e4SLinus Torvalds /** 2731da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 2741da177e4SLinus Torvalds * @size:size of structure to allocate 2751da177e4SLinus Torvalds * 2761da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 2771da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 2781da177e4SLinus Torvalds * including any private data used by the low-level driver. 2791da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 2801da177e4SLinus Torvalds * ib_alloc_device(). 2811da177e4SLinus Torvalds */ 2821da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 2831da177e4SLinus Torvalds { 28455aeed06SJason Gunthorpe struct ib_device *device; 2851da177e4SLinus Torvalds 28655aeed06SJason Gunthorpe if (WARN_ON(size < sizeof(struct ib_device))) 28755aeed06SJason Gunthorpe return NULL; 28855aeed06SJason Gunthorpe 28955aeed06SJason Gunthorpe device = kzalloc(size, GFP_KERNEL); 29055aeed06SJason Gunthorpe if (!device) 29155aeed06SJason Gunthorpe return NULL; 29255aeed06SJason Gunthorpe 29302d8883fSLeon Romanovsky rdma_restrack_init(&device->res); 29402d8883fSLeon Romanovsky 29555aeed06SJason Gunthorpe device->dev.class = &ib_class; 29655aeed06SJason Gunthorpe device_initialize(&device->dev); 29755aeed06SJason Gunthorpe 29855aeed06SJason Gunthorpe dev_set_drvdata(&device->dev, device); 29955aeed06SJason Gunthorpe 30055aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->event_handler_list); 30155aeed06SJason Gunthorpe spin_lock_init(&device->event_handler_lock); 302e1f540c3SParav Pandit rwlock_init(&device->client_data_lock); 30355aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->client_data_list); 30455aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->port_list); 30501b67117SParav Pandit refcount_set(&device->refcount, 1); 30601b67117SParav Pandit init_completion(&device->unreg_completion); 30755aeed06SJason Gunthorpe 30855aeed06SJason Gunthorpe return device; 3091da177e4SLinus Torvalds } 3101da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds /** 3131da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 3141da177e4SLinus Torvalds * @device:structure to free 3151da177e4SLinus Torvalds * 3161da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 3171da177e4SLinus Torvalds */ 3181da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 3191da177e4SLinus Torvalds { 3204512acd0SParav Pandit WARN_ON(!list_empty(&device->client_data_list)); 32155aeed06SJason Gunthorpe WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && 32255aeed06SJason Gunthorpe device->reg_state != IB_DEV_UNINITIALIZED); 323103140ecSLeon Romanovsky rdma_restrack_clean(&device->res); 324924b8900SLeon Romanovsky put_device(&device->dev); 3251da177e4SLinus Torvalds } 3261da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 3291da177e4SLinus Torvalds { 3301da177e4SLinus Torvalds struct ib_client_data *context; 3311da177e4SLinus Torvalds 3322d65f49fSParav Pandit context = kmalloc(sizeof(*context), GFP_KERNEL); 333a0b3455fSLeon Romanovsky if (!context) 3341da177e4SLinus Torvalds return -ENOMEM; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds context->client = client; 3371da177e4SLinus Torvalds context->data = NULL; 3387c1eb45aSHaggai Eran context->going_down = false; 3391da177e4SLinus Torvalds 3407c1eb45aSHaggai Eran down_write(&lists_rwsem); 341e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 3421da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 343e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 3447c1eb45aSHaggai Eran up_write(&lists_rwsem); 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds return 0; 3471da177e4SLinus Torvalds } 3481da177e4SLinus Torvalds 349337877a4SIra Weiny static int verify_immutable(const struct ib_device *dev, u8 port) 350337877a4SIra Weiny { 351337877a4SIra Weiny return WARN_ON(!rdma_cap_ib_mad(dev, port) && 352337877a4SIra Weiny rdma_max_mad_size(dev, port) != 0); 353337877a4SIra Weiny } 354337877a4SIra Weiny 3557738613eSIra Weiny static int read_port_immutable(struct ib_device *device) 3565eb620c8SYosef Etigin { 35755aeed06SJason Gunthorpe int ret; 3587738613eSIra Weiny u8 start_port = rdma_start_port(device); 3597738613eSIra Weiny u8 end_port = rdma_end_port(device); 3607738613eSIra Weiny u8 port; 3615eb620c8SYosef Etigin 3627738613eSIra Weiny /** 3637738613eSIra Weiny * device->port_immutable is indexed directly by the port number to make 3647738613eSIra Weiny * access to this data as efficient as possible. 3657738613eSIra Weiny * 3667738613eSIra Weiny * Therefore port_immutable is declared as a 1 based array with 3677738613eSIra Weiny * potential empty slots at the beginning. 3687738613eSIra Weiny */ 3696396bb22SKees Cook device->port_immutable = kcalloc(end_port + 1, 3706396bb22SKees Cook sizeof(*device->port_immutable), 3715eb620c8SYosef Etigin GFP_KERNEL); 3727738613eSIra Weiny if (!device->port_immutable) 37355aeed06SJason Gunthorpe return -ENOMEM; 3745eb620c8SYosef Etigin 3757738613eSIra Weiny for (port = start_port; port <= end_port; ++port) { 3767738613eSIra Weiny ret = device->get_port_immutable(device, port, 3777738613eSIra Weiny &device->port_immutable[port]); 3785eb620c8SYosef Etigin if (ret) 3795eb620c8SYosef Etigin return ret; 38055aeed06SJason Gunthorpe 38155aeed06SJason Gunthorpe if (verify_immutable(device, port)) 38255aeed06SJason Gunthorpe return -EINVAL; 38355aeed06SJason Gunthorpe } 38455aeed06SJason Gunthorpe return 0; 3855eb620c8SYosef Etigin } 3865eb620c8SYosef Etigin 3879abb0d1bSLeon Romanovsky void ib_get_device_fw_str(struct ib_device *dev, char *str) 3885fa76c20SIra Weiny { 3895fa76c20SIra Weiny if (dev->get_dev_fw_str) 3909abb0d1bSLeon Romanovsky dev->get_dev_fw_str(dev, str); 3915fa76c20SIra Weiny else 3925fa76c20SIra Weiny str[0] = '\0'; 3935fa76c20SIra Weiny } 3945fa76c20SIra Weiny EXPORT_SYMBOL(ib_get_device_fw_str); 3955fa76c20SIra Weiny 396d291f1a6SDaniel Jurgens static int setup_port_pkey_list(struct ib_device *device) 397d291f1a6SDaniel Jurgens { 398d291f1a6SDaniel Jurgens int i; 399d291f1a6SDaniel Jurgens 400d291f1a6SDaniel Jurgens /** 401d291f1a6SDaniel Jurgens * device->port_pkey_list is indexed directly by the port number, 402d291f1a6SDaniel Jurgens * Therefore it is declared as a 1 based array with potential empty 403d291f1a6SDaniel Jurgens * slots at the beginning. 404d291f1a6SDaniel Jurgens */ 405d291f1a6SDaniel Jurgens device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, 406d291f1a6SDaniel Jurgens sizeof(*device->port_pkey_list), 407d291f1a6SDaniel Jurgens GFP_KERNEL); 408d291f1a6SDaniel Jurgens 409d291f1a6SDaniel Jurgens if (!device->port_pkey_list) 410d291f1a6SDaniel Jurgens return -ENOMEM; 411d291f1a6SDaniel Jurgens 412d291f1a6SDaniel Jurgens for (i = 0; i < (rdma_end_port(device) + 1); i++) { 413d291f1a6SDaniel Jurgens spin_lock_init(&device->port_pkey_list[i].list_lock); 414d291f1a6SDaniel Jurgens INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); 415d291f1a6SDaniel Jurgens } 416d291f1a6SDaniel Jurgens 417d291f1a6SDaniel Jurgens return 0; 418d291f1a6SDaniel Jurgens } 419d291f1a6SDaniel Jurgens 4208f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work) 4218f408ab6SDaniel Jurgens { 4228f408ab6SDaniel Jurgens struct ib_device *dev; 4238f408ab6SDaniel Jurgens 4248f408ab6SDaniel Jurgens down_read(&lists_rwsem); 4258f408ab6SDaniel Jurgens list_for_each_entry(dev, &device_list, core_list) { 4268f408ab6SDaniel Jurgens int i; 4278f408ab6SDaniel Jurgens 4288f408ab6SDaniel Jurgens for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { 4298f408ab6SDaniel Jurgens u64 sp; 4308f408ab6SDaniel Jurgens int ret = ib_get_cached_subnet_prefix(dev, 4318f408ab6SDaniel Jurgens i, 4328f408ab6SDaniel Jurgens &sp); 4338f408ab6SDaniel Jurgens 4348f408ab6SDaniel Jurgens WARN_ONCE(ret, 4358f408ab6SDaniel Jurgens "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", 4368f408ab6SDaniel Jurgens ret); 437a750cfdeSDaniel Jurgens if (!ret) 4388f408ab6SDaniel Jurgens ib_security_cache_change(dev, i, sp); 4398f408ab6SDaniel Jurgens } 4408f408ab6SDaniel Jurgens } 4418f408ab6SDaniel Jurgens up_read(&lists_rwsem); 4428f408ab6SDaniel Jurgens } 4438f408ab6SDaniel Jurgens 4448f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 4458f408ab6SDaniel Jurgens void *lsm_data) 4468f408ab6SDaniel Jurgens { 4478f408ab6SDaniel Jurgens if (event != LSM_POLICY_CHANGE) 4488f408ab6SDaniel Jurgens return NOTIFY_DONE; 4498f408ab6SDaniel Jurgens 4508f408ab6SDaniel Jurgens schedule_work(&ib_policy_change_work); 4518f408ab6SDaniel Jurgens 4528f408ab6SDaniel Jurgens return NOTIFY_OK; 4538f408ab6SDaniel Jurgens } 4548f408ab6SDaniel Jurgens 4551da177e4SLinus Torvalds /** 456ecc82c53SLeon Romanovsky * __dev_new_index - allocate an device index 457ecc82c53SLeon Romanovsky * 458ecc82c53SLeon Romanovsky * Returns a suitable unique value for a new device interface 459ecc82c53SLeon Romanovsky * number. It assumes that there are less than 2^32-1 ib devices 460ecc82c53SLeon Romanovsky * will be present in the system. 461ecc82c53SLeon Romanovsky */ 462ecc82c53SLeon Romanovsky static u32 __dev_new_index(void) 463ecc82c53SLeon Romanovsky { 464ecc82c53SLeon Romanovsky /* 465ecc82c53SLeon Romanovsky * The device index to allow stable naming. 466ecc82c53SLeon Romanovsky * Similar to struct net -> ifindex. 467ecc82c53SLeon Romanovsky */ 468ecc82c53SLeon Romanovsky static u32 index; 469ecc82c53SLeon Romanovsky 470ecc82c53SLeon Romanovsky for (;;) { 471ecc82c53SLeon Romanovsky if (!(++index)) 472ecc82c53SLeon Romanovsky index = 1; 473ecc82c53SLeon Romanovsky 474ecc82c53SLeon Romanovsky if (!__ib_device_get_by_index(index)) 475ecc82c53SLeon Romanovsky return index; 476ecc82c53SLeon Romanovsky } 477ecc82c53SLeon Romanovsky } 478ecc82c53SLeon Romanovsky 479548cb4fbSParav Pandit static void setup_dma_device(struct ib_device *device) 4801da177e4SLinus Torvalds { 48199db9494SBart Van Assche struct device *parent = device->dev.parent; 4821da177e4SLinus Torvalds 4830957c29fSBart Van Assche WARN_ON_ONCE(device->dma_device); 4840957c29fSBart Van Assche if (device->dev.dma_ops) { 4850957c29fSBart Van Assche /* 4860957c29fSBart Van Assche * The caller provided custom DMA operations. Copy the 4870957c29fSBart Van Assche * DMA-related fields that are used by e.g. dma_alloc_coherent() 4880957c29fSBart Van Assche * into device->dev. 4890957c29fSBart Van Assche */ 4900957c29fSBart Van Assche device->dma_device = &device->dev; 49102ee9da3SBart Van Assche if (!device->dev.dma_mask) { 49202ee9da3SBart Van Assche if (parent) 49399db9494SBart Van Assche device->dev.dma_mask = parent->dma_mask; 49402ee9da3SBart Van Assche else 49502ee9da3SBart Van Assche WARN_ON_ONCE(true); 49602ee9da3SBart Van Assche } 49702ee9da3SBart Van Assche if (!device->dev.coherent_dma_mask) { 49802ee9da3SBart Van Assche if (parent) 4990957c29fSBart Van Assche device->dev.coherent_dma_mask = 5000957c29fSBart Van Assche parent->coherent_dma_mask; 50102ee9da3SBart Van Assche else 50202ee9da3SBart Van Assche WARN_ON_ONCE(true); 50302ee9da3SBart Van Assche } 5040957c29fSBart Van Assche } else { 5050957c29fSBart Van Assche /* 5060957c29fSBart Van Assche * The caller did not provide custom DMA operations. Use the 5070957c29fSBart Van Assche * DMA mapping operations of the parent device. 5080957c29fSBart Van Assche */ 50902ee9da3SBart Van Assche WARN_ON_ONCE(!parent); 5100957c29fSBart Van Assche device->dma_device = parent; 5110957c29fSBart Van Assche } 512548cb4fbSParav Pandit } 513548cb4fbSParav Pandit 514548cb4fbSParav Pandit static void cleanup_device(struct ib_device *device) 515548cb4fbSParav Pandit { 516548cb4fbSParav Pandit ib_cache_cleanup_one(device); 517548cb4fbSParav Pandit ib_cache_release_one(device); 518548cb4fbSParav Pandit kfree(device->port_pkey_list); 519548cb4fbSParav Pandit kfree(device->port_immutable); 520548cb4fbSParav Pandit } 521548cb4fbSParav Pandit 522548cb4fbSParav Pandit static int setup_device(struct ib_device *device) 523548cb4fbSParav Pandit { 524548cb4fbSParav Pandit struct ib_udata uhw = {.outlen = 0, .inlen = 0}; 525548cb4fbSParav Pandit int ret; 526548cb4fbSParav Pandit 527548cb4fbSParav Pandit ret = ib_device_check_mandatory(device); 528548cb4fbSParav Pandit if (ret) 529548cb4fbSParav Pandit return ret; 530548cb4fbSParav Pandit 531548cb4fbSParav Pandit ret = read_port_immutable(device); 532548cb4fbSParav Pandit if (ret) { 533548cb4fbSParav Pandit dev_warn(&device->dev, 534548cb4fbSParav Pandit "Couldn't create per port immutable data\n"); 535548cb4fbSParav Pandit return ret; 536548cb4fbSParav Pandit } 537548cb4fbSParav Pandit 538548cb4fbSParav Pandit memset(&device->attrs, 0, sizeof(device->attrs)); 539548cb4fbSParav Pandit ret = device->query_device(device, &device->attrs, &uhw); 540548cb4fbSParav Pandit if (ret) { 541548cb4fbSParav Pandit dev_warn(&device->dev, 542548cb4fbSParav Pandit "Couldn't query the device attributes\n"); 543548cb4fbSParav Pandit goto port_cleanup; 544548cb4fbSParav Pandit } 545548cb4fbSParav Pandit 546548cb4fbSParav Pandit ret = setup_port_pkey_list(device); 547548cb4fbSParav Pandit if (ret) { 548548cb4fbSParav Pandit dev_warn(&device->dev, "Couldn't create per port_pkey_list\n"); 549548cb4fbSParav Pandit goto port_cleanup; 550548cb4fbSParav Pandit } 551548cb4fbSParav Pandit 552548cb4fbSParav Pandit ret = ib_cache_setup_one(device); 553548cb4fbSParav Pandit if (ret) { 554548cb4fbSParav Pandit dev_warn(&device->dev, 555548cb4fbSParav Pandit "Couldn't set up InfiniBand P_Key/GID cache\n"); 556548cb4fbSParav Pandit goto pkey_cleanup; 557548cb4fbSParav Pandit } 558548cb4fbSParav Pandit return 0; 559548cb4fbSParav Pandit 560548cb4fbSParav Pandit pkey_cleanup: 561548cb4fbSParav Pandit kfree(device->port_pkey_list); 562548cb4fbSParav Pandit port_cleanup: 563548cb4fbSParav Pandit kfree(device->port_immutable); 564548cb4fbSParav Pandit return ret; 565548cb4fbSParav Pandit } 566548cb4fbSParav Pandit 567548cb4fbSParav Pandit /** 568548cb4fbSParav Pandit * ib_register_device - Register an IB device with IB core 569548cb4fbSParav Pandit * @device:Device to register 570548cb4fbSParav Pandit * 571548cb4fbSParav Pandit * Low-level drivers use ib_register_device() to register their 572548cb4fbSParav Pandit * devices with the IB core. All registered clients will receive a 573548cb4fbSParav Pandit * callback for each device that is added. @device must be allocated 574548cb4fbSParav Pandit * with ib_alloc_device(). 575548cb4fbSParav Pandit */ 576548cb4fbSParav Pandit int ib_register_device(struct ib_device *device, const char *name, 577548cb4fbSParav Pandit int (*port_callback)(struct ib_device *, u8, 578548cb4fbSParav Pandit struct kobject *)) 579548cb4fbSParav Pandit { 580548cb4fbSParav Pandit int ret; 581548cb4fbSParav Pandit struct ib_client *client; 582548cb4fbSParav Pandit 583548cb4fbSParav Pandit setup_dma_device(device); 5841da177e4SLinus Torvalds 58595ed644fSIngo Molnar mutex_lock(&device_mutex); 5861da177e4SLinus Torvalds 587e349f858SJason Gunthorpe if (strchr(name, '%')) { 588e349f858SJason Gunthorpe ret = alloc_name(device, name); 589e349f858SJason Gunthorpe if (ret) 590e349f858SJason Gunthorpe goto out; 591e349f858SJason Gunthorpe } else { 592e349f858SJason Gunthorpe ret = dev_set_name(&device->dev, name); 5931da177e4SLinus Torvalds if (ret) 5941da177e4SLinus Torvalds goto out; 5951da177e4SLinus Torvalds } 596e349f858SJason Gunthorpe if (__ib_device_get_by_name(dev_name(&device->dev))) { 597e349f858SJason Gunthorpe ret = -ENFILE; 598e349f858SJason Gunthorpe goto out; 599e349f858SJason Gunthorpe } 600e349f858SJason Gunthorpe strlcpy(device->name, dev_name(&device->dev), IB_DEVICE_NAME_MAX); 6011da177e4SLinus Torvalds 602548cb4fbSParav Pandit ret = setup_device(device); 603548cb4fbSParav Pandit if (ret) 6041da177e4SLinus Torvalds goto out; 60503db3a2dSMatan Barak 60627399350SParav Pandit device->index = __dev_new_index(); 60727399350SParav Pandit 60843579b5fSParav Pandit ret = ib_device_register_rdmacg(device); 60943579b5fSParav Pandit if (ret) { 61043c7c851SJason Gunthorpe dev_warn(&device->dev, 61143c7c851SJason Gunthorpe "Couldn't register device with rdma cgroup\n"); 612548cb4fbSParav Pandit goto dev_cleanup; 6133e153a93SIra Weiny } 6143e153a93SIra Weiny 6159a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 6161da177e4SLinus Torvalds if (ret) { 61743c7c851SJason Gunthorpe dev_warn(&device->dev, 61843c7c851SJason Gunthorpe "Couldn't register device with driver model\n"); 6192fb4f4eaSParav Pandit goto cg_cleanup; 6201da177e4SLinus Torvalds } 6211da177e4SLinus Torvalds 6221da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 625b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 6261da177e4SLinus Torvalds client->add(device); 6271da177e4SLinus Torvalds 6285aa44bb9SHaggai Eran down_write(&lists_rwsem); 6295aa44bb9SHaggai Eran list_add_tail(&device->core_list, &device_list); 6305aa44bb9SHaggai Eran up_write(&lists_rwsem); 6314be3a4faSParav Pandit mutex_unlock(&device_mutex); 6324be3a4faSParav Pandit return 0; 6334be3a4faSParav Pandit 6342fb4f4eaSParav Pandit cg_cleanup: 6352fb4f4eaSParav Pandit ib_device_unregister_rdmacg(device); 636548cb4fbSParav Pandit dev_cleanup: 637548cb4fbSParav Pandit cleanup_device(device); 6381da177e4SLinus Torvalds out: 63995ed644fSIngo Molnar mutex_unlock(&device_mutex); 6401da177e4SLinus Torvalds return ret; 6411da177e4SLinus Torvalds } 6421da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds /** 6451da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 6461da177e4SLinus Torvalds * @device:Device to unregister 6471da177e4SLinus Torvalds * 6481da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 6491da177e4SLinus Torvalds */ 6501da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 6511da177e4SLinus Torvalds { 6521da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 6531da177e4SLinus Torvalds unsigned long flags; 6541da177e4SLinus Torvalds 65501b67117SParav Pandit /* 65601b67117SParav Pandit * Wait for all netlink command callers to finish working on the 65701b67117SParav Pandit * device. 65801b67117SParav Pandit */ 65901b67117SParav Pandit ib_device_put(device); 66001b67117SParav Pandit wait_for_completion(&device->unreg_completion); 66101b67117SParav Pandit 66295ed644fSIngo Molnar mutex_lock(&device_mutex); 6631da177e4SLinus Torvalds 6645aa44bb9SHaggai Eran down_write(&lists_rwsem); 6655aa44bb9SHaggai Eran list_del(&device->core_list); 666e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 667f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) 6687c1eb45aSHaggai Eran context->going_down = true; 669e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 6707c1eb45aSHaggai Eran downgrade_write(&lists_rwsem); 6715aa44bb9SHaggai Eran 672f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) { 6737c1eb45aSHaggai Eran if (context->client->remove) 6747c1eb45aSHaggai Eran context->client->remove(device, context->data); 6757c1eb45aSHaggai Eran } 6767c1eb45aSHaggai Eran up_read(&lists_rwsem); 6771da177e4SLinus Torvalds 6789206dff1SRoland Dreier ib_device_unregister_sysfs(device); 679c715a395SParav Pandit ib_device_unregister_rdmacg(device); 68006f8174aSShiraz Saleem 68106f8174aSShiraz Saleem mutex_unlock(&device_mutex); 68206f8174aSShiraz Saleem 68303db3a2dSMatan Barak ib_cache_cleanup_one(device); 6849206dff1SRoland Dreier 685d291f1a6SDaniel Jurgens ib_security_destroy_port_pkey_list(device); 686d291f1a6SDaniel Jurgens kfree(device->port_pkey_list); 687d291f1a6SDaniel Jurgens 6887c1eb45aSHaggai Eran down_write(&lists_rwsem); 689e1f540c3SParav Pandit write_lock_irqsave(&device->client_data_lock, flags); 6904512acd0SParav Pandit list_for_each_entry_safe(context, tmp, &device->client_data_list, 6914512acd0SParav Pandit list) { 6924512acd0SParav Pandit list_del(&context->list); 6931da177e4SLinus Torvalds kfree(context); 6944512acd0SParav Pandit } 695e1f540c3SParav Pandit write_unlock_irqrestore(&device->client_data_lock, flags); 6967c1eb45aSHaggai Eran up_write(&lists_rwsem); 6971da177e4SLinus Torvalds 6981da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 6991da177e4SLinus Torvalds } 7001da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 7011da177e4SLinus Torvalds 7021da177e4SLinus Torvalds /** 7031da177e4SLinus Torvalds * ib_register_client - Register an IB client 7041da177e4SLinus Torvalds * @client:Client to register 7051da177e4SLinus Torvalds * 7061da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 7071da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 7081da177e4SLinus Torvalds * device is added, each registered client's add method will be called 7091da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 7101da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 7111da177e4SLinus Torvalds * order that clients were registered). In addition, when 7121da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 7131da177e4SLinus Torvalds * callback for all devices already registered. 7141da177e4SLinus Torvalds */ 7151da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 7161da177e4SLinus Torvalds { 7171da177e4SLinus Torvalds struct ib_device *device; 7181da177e4SLinus Torvalds 71995ed644fSIngo Molnar mutex_lock(&device_mutex); 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 722b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 7231da177e4SLinus Torvalds client->add(device); 7241da177e4SLinus Torvalds 7255aa44bb9SHaggai Eran down_write(&lists_rwsem); 7265aa44bb9SHaggai Eran list_add_tail(&client->list, &client_list); 7275aa44bb9SHaggai Eran up_write(&lists_rwsem); 7285aa44bb9SHaggai Eran 72995ed644fSIngo Molnar mutex_unlock(&device_mutex); 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds return 0; 7321da177e4SLinus Torvalds } 7331da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds /** 7361da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 7371da177e4SLinus Torvalds * @client:Client to unregister 7381da177e4SLinus Torvalds * 7391da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 7401da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 7411da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 7421da177e4SLinus Torvalds */ 7431da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 7441da177e4SLinus Torvalds { 745f7b65d9bSParav Pandit struct ib_client_data *context; 7461da177e4SLinus Torvalds struct ib_device *device; 7471da177e4SLinus Torvalds 74895ed644fSIngo Molnar mutex_lock(&device_mutex); 7491da177e4SLinus Torvalds 7505aa44bb9SHaggai Eran down_write(&lists_rwsem); 7515aa44bb9SHaggai Eran list_del(&client->list); 7525aa44bb9SHaggai Eran up_write(&lists_rwsem); 7535aa44bb9SHaggai Eran 7541da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 7557c1eb45aSHaggai Eran struct ib_client_data *found_context = NULL; 7561da177e4SLinus Torvalds 7577c1eb45aSHaggai Eran down_write(&lists_rwsem); 758e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 759f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) 7601da177e4SLinus Torvalds if (context->client == client) { 7617c1eb45aSHaggai Eran context->going_down = true; 7627c1eb45aSHaggai Eran found_context = context; 7637c1eb45aSHaggai Eran break; 7641da177e4SLinus Torvalds } 765e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 7667c1eb45aSHaggai Eran up_write(&lists_rwsem); 7677c1eb45aSHaggai Eran 7687c1eb45aSHaggai Eran if (client->remove) 7697c1eb45aSHaggai Eran client->remove(device, found_context ? 7707c1eb45aSHaggai Eran found_context->data : NULL); 7717c1eb45aSHaggai Eran 7727c1eb45aSHaggai Eran if (!found_context) { 77343c7c851SJason Gunthorpe dev_warn(&device->dev, 77443c7c851SJason Gunthorpe "No client context found for %s\n", 77543c7c851SJason Gunthorpe client->name); 7767c1eb45aSHaggai Eran continue; 7777c1eb45aSHaggai Eran } 7787c1eb45aSHaggai Eran 7797c1eb45aSHaggai Eran down_write(&lists_rwsem); 780e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 7817c1eb45aSHaggai Eran list_del(&found_context->list); 782e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 7837c1eb45aSHaggai Eran up_write(&lists_rwsem); 78493688ddbSParav Pandit kfree(found_context); 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds 78795ed644fSIngo Molnar mutex_unlock(&device_mutex); 7881da177e4SLinus Torvalds } 7891da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds /** 7921da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 7931da177e4SLinus Torvalds * @device:Device to get context for 7941da177e4SLinus Torvalds * @client:Client to get context for 7951da177e4SLinus Torvalds * 7961da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 7971da177e4SLinus Torvalds * ib_set_client_data(). 7981da177e4SLinus Torvalds */ 7991da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 8001da177e4SLinus Torvalds { 8011da177e4SLinus Torvalds struct ib_client_data *context; 8021da177e4SLinus Torvalds void *ret = NULL; 8031da177e4SLinus Torvalds unsigned long flags; 8041da177e4SLinus Torvalds 805e1f540c3SParav Pandit read_lock_irqsave(&device->client_data_lock, flags); 8061da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 8071da177e4SLinus Torvalds if (context->client == client) { 8081da177e4SLinus Torvalds ret = context->data; 8091da177e4SLinus Torvalds break; 8101da177e4SLinus Torvalds } 811e1f540c3SParav Pandit read_unlock_irqrestore(&device->client_data_lock, flags); 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds return ret; 8141da177e4SLinus Torvalds } 8151da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 8161da177e4SLinus Torvalds 8171da177e4SLinus Torvalds /** 8189cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 8191da177e4SLinus Torvalds * @device:Device to set context for 8201da177e4SLinus Torvalds * @client:Client to set context for 8211da177e4SLinus Torvalds * @data:Context to set 8221da177e4SLinus Torvalds * 8231da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 8241da177e4SLinus Torvalds * ib_get_client_data(). 8251da177e4SLinus Torvalds */ 8261da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 8271da177e4SLinus Torvalds void *data) 8281da177e4SLinus Torvalds { 8291da177e4SLinus Torvalds struct ib_client_data *context; 8301da177e4SLinus Torvalds unsigned long flags; 8311da177e4SLinus Torvalds 832e1f540c3SParav Pandit write_lock_irqsave(&device->client_data_lock, flags); 8331da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 8341da177e4SLinus Torvalds if (context->client == client) { 8351da177e4SLinus Torvalds context->data = data; 8361da177e4SLinus Torvalds goto out; 8371da177e4SLinus Torvalds } 8381da177e4SLinus Torvalds 83943c7c851SJason Gunthorpe dev_warn(&device->dev, "No client context found for %s\n", 84043c7c851SJason Gunthorpe client->name); 8411da177e4SLinus Torvalds 8421da177e4SLinus Torvalds out: 843e1f540c3SParav Pandit write_unlock_irqrestore(&device->client_data_lock, flags); 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 8461da177e4SLinus Torvalds 8471da177e4SLinus Torvalds /** 8481da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 8491da177e4SLinus Torvalds * @event_handler:Handler to register 8501da177e4SLinus Torvalds * 8511da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 8521da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 8531da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 8541da177e4SLinus Torvalds * callback may occur in interrupt context. 8551da177e4SLinus Torvalds */ 856dcc9881eSLeon Romanovsky void ib_register_event_handler(struct ib_event_handler *event_handler) 8571da177e4SLinus Torvalds { 8581da177e4SLinus Torvalds unsigned long flags; 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8611da177e4SLinus Torvalds list_add_tail(&event_handler->list, 8621da177e4SLinus Torvalds &event_handler->device->event_handler_list); 8631da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8641da177e4SLinus Torvalds } 8651da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds /** 8681da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 8691da177e4SLinus Torvalds * @event_handler:Handler to unregister 8701da177e4SLinus Torvalds * 8711da177e4SLinus Torvalds * Unregister an event handler registered with 8721da177e4SLinus Torvalds * ib_register_event_handler(). 8731da177e4SLinus Torvalds */ 874dcc9881eSLeon Romanovsky void ib_unregister_event_handler(struct ib_event_handler *event_handler) 8751da177e4SLinus Torvalds { 8761da177e4SLinus Torvalds unsigned long flags; 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8791da177e4SLinus Torvalds list_del(&event_handler->list); 8801da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8811da177e4SLinus Torvalds } 8821da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds /** 8851da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 8861da177e4SLinus Torvalds * @event:Event to dispatch 8871da177e4SLinus Torvalds * 8881da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 8891da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 8901da177e4SLinus Torvalds * occurs. 8911da177e4SLinus Torvalds */ 8921da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 8931da177e4SLinus Torvalds { 8941da177e4SLinus Torvalds unsigned long flags; 8951da177e4SLinus Torvalds struct ib_event_handler *handler; 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 9001da177e4SLinus Torvalds handler->handler(handler, event); 9011da177e4SLinus Torvalds 9021da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 9031da177e4SLinus Torvalds } 9041da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 9051da177e4SLinus Torvalds 9061da177e4SLinus Torvalds /** 9071da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 9081da177e4SLinus Torvalds * @device:Device to query 9091da177e4SLinus Torvalds * @port_num:Port number to query 9101da177e4SLinus Torvalds * @port_attr:Port attributes 9111da177e4SLinus Torvalds * 9121da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 9131da177e4SLinus Torvalds * @port_attr pointer. 9141da177e4SLinus Torvalds */ 9151da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 9161da177e4SLinus Torvalds u8 port_num, 9171da177e4SLinus Torvalds struct ib_port_attr *port_attr) 9181da177e4SLinus Torvalds { 919fad61ad4SEli Cohen union ib_gid gid; 920fad61ad4SEli Cohen int err; 921fad61ad4SEli Cohen 92224dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 923116c0074SRoland Dreier return -EINVAL; 924116c0074SRoland Dreier 925fad61ad4SEli Cohen memset(port_attr, 0, sizeof(*port_attr)); 926fad61ad4SEli Cohen err = device->query_port(device, port_num, port_attr); 927fad61ad4SEli Cohen if (err || port_attr->subnet_prefix) 928fad61ad4SEli Cohen return err; 929fad61ad4SEli Cohen 930d7012467SEli Cohen if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) 931d7012467SEli Cohen return 0; 932d7012467SEli Cohen 933f35faa4bSParav Pandit err = device->query_gid(device, port_num, 0, &gid); 934fad61ad4SEli Cohen if (err) 935fad61ad4SEli Cohen return err; 936fad61ad4SEli Cohen 937fad61ad4SEli Cohen port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); 938fad61ad4SEli Cohen return 0; 9391da177e4SLinus Torvalds } 9401da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 9411da177e4SLinus Torvalds 9421da177e4SLinus Torvalds /** 94303db3a2dSMatan Barak * ib_enum_roce_netdev - enumerate all RoCE ports 94403db3a2dSMatan Barak * @ib_dev : IB device we want to query 94503db3a2dSMatan Barak * @filter: Should we call the callback? 94603db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 94703db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 94803db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 94903db3a2dSMatan Barak * 95003db3a2dSMatan Barak * Enumerates all of the physical RoCE ports of ib_dev 95103db3a2dSMatan Barak * which are related to netdevice and calls callback() on each 95203db3a2dSMatan Barak * device for which filter() function returns non zero. 95303db3a2dSMatan Barak */ 95403db3a2dSMatan Barak void ib_enum_roce_netdev(struct ib_device *ib_dev, 95503db3a2dSMatan Barak roce_netdev_filter filter, 95603db3a2dSMatan Barak void *filter_cookie, 95703db3a2dSMatan Barak roce_netdev_callback cb, 95803db3a2dSMatan Barak void *cookie) 95903db3a2dSMatan Barak { 96003db3a2dSMatan Barak u8 port; 96103db3a2dSMatan Barak 96203db3a2dSMatan Barak for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); 96303db3a2dSMatan Barak port++) 96403db3a2dSMatan Barak if (rdma_protocol_roce(ib_dev, port)) { 96503db3a2dSMatan Barak struct net_device *idev = NULL; 96603db3a2dSMatan Barak 96703db3a2dSMatan Barak if (ib_dev->get_netdev) 96803db3a2dSMatan Barak idev = ib_dev->get_netdev(ib_dev, port); 96903db3a2dSMatan Barak 97003db3a2dSMatan Barak if (idev && 97103db3a2dSMatan Barak idev->reg_state >= NETREG_UNREGISTERED) { 97203db3a2dSMatan Barak dev_put(idev); 97303db3a2dSMatan Barak idev = NULL; 97403db3a2dSMatan Barak } 97503db3a2dSMatan Barak 97603db3a2dSMatan Barak if (filter(ib_dev, port, idev, filter_cookie)) 97703db3a2dSMatan Barak cb(ib_dev, port, idev, cookie); 97803db3a2dSMatan Barak 97903db3a2dSMatan Barak if (idev) 98003db3a2dSMatan Barak dev_put(idev); 98103db3a2dSMatan Barak } 98203db3a2dSMatan Barak } 98303db3a2dSMatan Barak 98403db3a2dSMatan Barak /** 98503db3a2dSMatan Barak * ib_enum_all_roce_netdevs - enumerate all RoCE devices 98603db3a2dSMatan Barak * @filter: Should we call the callback? 98703db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 98803db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 98903db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 99003db3a2dSMatan Barak * 99103db3a2dSMatan Barak * Enumerates all RoCE devices' physical ports which are related 99203db3a2dSMatan Barak * to netdevices and calls callback() on each device for which 99303db3a2dSMatan Barak * filter() function returns non zero. 99403db3a2dSMatan Barak */ 99503db3a2dSMatan Barak void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 99603db3a2dSMatan Barak void *filter_cookie, 99703db3a2dSMatan Barak roce_netdev_callback cb, 99803db3a2dSMatan Barak void *cookie) 99903db3a2dSMatan Barak { 100003db3a2dSMatan Barak struct ib_device *dev; 100103db3a2dSMatan Barak 100203db3a2dSMatan Barak down_read(&lists_rwsem); 100303db3a2dSMatan Barak list_for_each_entry(dev, &device_list, core_list) 100403db3a2dSMatan Barak ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); 100503db3a2dSMatan Barak up_read(&lists_rwsem); 100603db3a2dSMatan Barak } 100703db3a2dSMatan Barak 100803db3a2dSMatan Barak /** 10098030c835SLeon Romanovsky * ib_enum_all_devs - enumerate all ib_devices 10108030c835SLeon Romanovsky * @cb: Callback to call for each found ib_device 10118030c835SLeon Romanovsky * 10128030c835SLeon Romanovsky * Enumerates all ib_devices and calls callback() on each device. 10138030c835SLeon Romanovsky */ 10148030c835SLeon Romanovsky int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 10158030c835SLeon Romanovsky struct netlink_callback *cb) 10168030c835SLeon Romanovsky { 10178030c835SLeon Romanovsky struct ib_device *dev; 10188030c835SLeon Romanovsky unsigned int idx = 0; 10198030c835SLeon Romanovsky int ret = 0; 10208030c835SLeon Romanovsky 10218030c835SLeon Romanovsky down_read(&lists_rwsem); 10228030c835SLeon Romanovsky list_for_each_entry(dev, &device_list, core_list) { 10238030c835SLeon Romanovsky ret = nldev_cb(dev, skb, cb, idx); 10248030c835SLeon Romanovsky if (ret) 10258030c835SLeon Romanovsky break; 10268030c835SLeon Romanovsky idx++; 10278030c835SLeon Romanovsky } 10288030c835SLeon Romanovsky 10298030c835SLeon Romanovsky up_read(&lists_rwsem); 10308030c835SLeon Romanovsky return ret; 10318030c835SLeon Romanovsky } 10328030c835SLeon Romanovsky 10338030c835SLeon Romanovsky /** 10341da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 10351da177e4SLinus Torvalds * @device:Device to query 10361da177e4SLinus Torvalds * @port_num:Port number to query 10371da177e4SLinus Torvalds * @index:P_Key table index to query 10381da177e4SLinus Torvalds * @pkey:Returned P_Key 10391da177e4SLinus Torvalds * 10401da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 10411da177e4SLinus Torvalds */ 10421da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 10431da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 10441da177e4SLinus Torvalds { 10451da177e4SLinus Torvalds return device->query_pkey(device, port_num, index, pkey); 10461da177e4SLinus Torvalds } 10471da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 10481da177e4SLinus Torvalds 10491da177e4SLinus Torvalds /** 10501da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 10511da177e4SLinus Torvalds * @device:Device to modify 10521da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 10531da177e4SLinus Torvalds * @device_modify:New attribute values 10541da177e4SLinus Torvalds * 10551da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 10561da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 10571da177e4SLinus Torvalds */ 10581da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 10591da177e4SLinus Torvalds int device_modify_mask, 10601da177e4SLinus Torvalds struct ib_device_modify *device_modify) 10611da177e4SLinus Torvalds { 106210e1b54bSBart Van Assche if (!device->modify_device) 106310e1b54bSBart Van Assche return -ENOSYS; 106410e1b54bSBart Van Assche 10651da177e4SLinus Torvalds return device->modify_device(device, device_modify_mask, 10661da177e4SLinus Torvalds device_modify); 10671da177e4SLinus Torvalds } 10681da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 10691da177e4SLinus Torvalds 10701da177e4SLinus Torvalds /** 10711da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 10721da177e4SLinus Torvalds * @device: The device to modify. 10731da177e4SLinus Torvalds * @port_num: The number of the port to modify. 10741da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 10751da177e4SLinus Torvalds * to change. 10761da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 10771da177e4SLinus Torvalds * 10781da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 10791da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 10801da177e4SLinus Torvalds */ 10811da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 10821da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 10831da177e4SLinus Torvalds struct ib_port_modify *port_modify) 10841da177e4SLinus Torvalds { 108561e0962dSSelvin Xavier int rc; 108610e1b54bSBart Van Assche 108724dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 1088116c0074SRoland Dreier return -EINVAL; 1089116c0074SRoland Dreier 109061e0962dSSelvin Xavier if (device->modify_port) 109161e0962dSSelvin Xavier rc = device->modify_port(device, port_num, port_modify_mask, 10921da177e4SLinus Torvalds port_modify); 109361e0962dSSelvin Xavier else 109461e0962dSSelvin Xavier rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; 109561e0962dSSelvin Xavier return rc; 10961da177e4SLinus Torvalds } 10971da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 10981da177e4SLinus Torvalds 10995eb620c8SYosef Etigin /** 11005eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 1101dbb12562SParav Pandit * a specified GID value occurs. Its searches only for IB link layer. 11025eb620c8SYosef Etigin * @device: The device to query. 11035eb620c8SYosef Etigin * @gid: The GID value to search for. 11045eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 11055eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 11065eb620c8SYosef Etigin * parameter may be NULL. 11075eb620c8SYosef Etigin */ 11085eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 1109b26c4a11SParav Pandit u8 *port_num, u16 *index) 11105eb620c8SYosef Etigin { 11115eb620c8SYosef Etigin union ib_gid tmp_gid; 11125eb620c8SYosef Etigin int ret, port, i; 11135eb620c8SYosef Etigin 11140cf18d77SIra Weiny for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { 111522d24f75SParav Pandit if (!rdma_protocol_ib(device, port)) 1116b39ffa1dSMatan Barak continue; 1117b39ffa1dSMatan Barak 11187738613eSIra Weiny for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { 11191dfce294SParav Pandit ret = rdma_query_gid(device, port, i, &tmp_gid); 11205eb620c8SYosef Etigin if (ret) 11215eb620c8SYosef Etigin return ret; 11225eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 11235eb620c8SYosef Etigin *port_num = port; 11245eb620c8SYosef Etigin if (index) 11255eb620c8SYosef Etigin *index = i; 11265eb620c8SYosef Etigin return 0; 11275eb620c8SYosef Etigin } 11285eb620c8SYosef Etigin } 11295eb620c8SYosef Etigin } 11305eb620c8SYosef Etigin 11315eb620c8SYosef Etigin return -ENOENT; 11325eb620c8SYosef Etigin } 11335eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 11345eb620c8SYosef Etigin 11355eb620c8SYosef Etigin /** 11365eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 11375eb620c8SYosef Etigin * PKey value occurs. 11385eb620c8SYosef Etigin * @device: The device to query. 11395eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 11405eb620c8SYosef Etigin * @pkey: The PKey value to search for. 11415eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 11425eb620c8SYosef Etigin */ 11435eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 11445eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 11455eb620c8SYosef Etigin { 11465eb620c8SYosef Etigin int ret, i; 11475eb620c8SYosef Etigin u16 tmp_pkey; 1148ff7166c4SJack Morgenstein int partial_ix = -1; 11495eb620c8SYosef Etigin 11507738613eSIra Weiny for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { 11515eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 11525eb620c8SYosef Etigin if (ret) 11535eb620c8SYosef Etigin return ret; 115436026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 1155ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 1156ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 11575eb620c8SYosef Etigin *index = i; 11585eb620c8SYosef Etigin return 0; 11595eb620c8SYosef Etigin } 1160ff7166c4SJack Morgenstein if (partial_ix < 0) 1161ff7166c4SJack Morgenstein partial_ix = i; 1162ff7166c4SJack Morgenstein } 11635eb620c8SYosef Etigin } 11645eb620c8SYosef Etigin 1165ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 1166ff7166c4SJack Morgenstein if (partial_ix >= 0) { 1167ff7166c4SJack Morgenstein *index = partial_ix; 1168ff7166c4SJack Morgenstein return 0; 1169ff7166c4SJack Morgenstein } 11705eb620c8SYosef Etigin return -ENOENT; 11715eb620c8SYosef Etigin } 11725eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 11735eb620c8SYosef Etigin 11749268f72dSYotam Kenneth /** 11759268f72dSYotam Kenneth * ib_get_net_dev_by_params() - Return the appropriate net_dev 11769268f72dSYotam Kenneth * for a received CM request 11779268f72dSYotam Kenneth * @dev: An RDMA device on which the request has been received. 11789268f72dSYotam Kenneth * @port: Port number on the RDMA device. 11799268f72dSYotam Kenneth * @pkey: The Pkey the request came on. 11809268f72dSYotam Kenneth * @gid: A GID that the net_dev uses to communicate. 11819268f72dSYotam Kenneth * @addr: Contains the IP address that the request specified as its 11829268f72dSYotam Kenneth * destination. 11839268f72dSYotam Kenneth */ 11849268f72dSYotam Kenneth struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, 11859268f72dSYotam Kenneth u8 port, 11869268f72dSYotam Kenneth u16 pkey, 11879268f72dSYotam Kenneth const union ib_gid *gid, 11889268f72dSYotam Kenneth const struct sockaddr *addr) 11899268f72dSYotam Kenneth { 11909268f72dSYotam Kenneth struct net_device *net_dev = NULL; 11919268f72dSYotam Kenneth struct ib_client_data *context; 11929268f72dSYotam Kenneth 11939268f72dSYotam Kenneth if (!rdma_protocol_ib(dev, port)) 11949268f72dSYotam Kenneth return NULL; 11959268f72dSYotam Kenneth 11969268f72dSYotam Kenneth down_read(&lists_rwsem); 11979268f72dSYotam Kenneth 11989268f72dSYotam Kenneth list_for_each_entry(context, &dev->client_data_list, list) { 11999268f72dSYotam Kenneth struct ib_client *client = context->client; 12009268f72dSYotam Kenneth 12019268f72dSYotam Kenneth if (context->going_down) 12029268f72dSYotam Kenneth continue; 12039268f72dSYotam Kenneth 12049268f72dSYotam Kenneth if (client->get_net_dev_by_params) { 12059268f72dSYotam Kenneth net_dev = client->get_net_dev_by_params(dev, port, pkey, 12069268f72dSYotam Kenneth gid, addr, 12079268f72dSYotam Kenneth context->data); 12089268f72dSYotam Kenneth if (net_dev) 12099268f72dSYotam Kenneth break; 12109268f72dSYotam Kenneth } 12119268f72dSYotam Kenneth } 12129268f72dSYotam Kenneth 12139268f72dSYotam Kenneth up_read(&lists_rwsem); 12149268f72dSYotam Kenneth 12159268f72dSYotam Kenneth return net_dev; 12169268f72dSYotam Kenneth } 12179268f72dSYotam Kenneth EXPORT_SYMBOL(ib_get_net_dev_by_params); 12189268f72dSYotam Kenneth 1219d0e312feSLeon Romanovsky static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { 1220735c631aSMark Bloch [RDMA_NL_LS_OP_RESOLVE] = { 1221647c75acSLeon Romanovsky .doit = ib_nl_handle_resolve_resp, 1222e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1223e3a2b93dSLeon Romanovsky }, 1224735c631aSMark Bloch [RDMA_NL_LS_OP_SET_TIMEOUT] = { 1225647c75acSLeon Romanovsky .doit = ib_nl_handle_set_timeout, 1226e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1227e3a2b93dSLeon Romanovsky }, 1228ae43f828SMark Bloch [RDMA_NL_LS_OP_IP_RESOLVE] = { 1229647c75acSLeon Romanovsky .doit = ib_nl_handle_ip_res_resp, 1230e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1231e3a2b93dSLeon Romanovsky }, 1232735c631aSMark Bloch }; 1233735c631aSMark Bloch 12341da177e4SLinus Torvalds static int __init ib_core_init(void) 12351da177e4SLinus Torvalds { 12361da177e4SLinus Torvalds int ret; 12371da177e4SLinus Torvalds 1238f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 1239f0626710STejun Heo if (!ib_wq) 1240f0626710STejun Heo return -ENOMEM; 1241f0626710STejun Heo 124214d3a3b2SChristoph Hellwig ib_comp_wq = alloc_workqueue("ib-comp-wq", 1243b7363e67SSagi Grimberg WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); 124414d3a3b2SChristoph Hellwig if (!ib_comp_wq) { 124514d3a3b2SChristoph Hellwig ret = -ENOMEM; 124614d3a3b2SChristoph Hellwig goto err; 124714d3a3b2SChristoph Hellwig } 124814d3a3b2SChristoph Hellwig 1249f794809aSJack Morgenstein ib_comp_unbound_wq = 1250f794809aSJack Morgenstein alloc_workqueue("ib-comp-unb-wq", 1251f794809aSJack Morgenstein WQ_UNBOUND | WQ_HIGHPRI | WQ_MEM_RECLAIM | 1252f794809aSJack Morgenstein WQ_SYSFS, WQ_UNBOUND_MAX_ACTIVE); 1253f794809aSJack Morgenstein if (!ib_comp_unbound_wq) { 1254f794809aSJack Morgenstein ret = -ENOMEM; 1255f794809aSJack Morgenstein goto err_comp; 1256f794809aSJack Morgenstein } 1257f794809aSJack Morgenstein 125855aeed06SJason Gunthorpe ret = class_register(&ib_class); 1259fd75c789SNir Muchtar if (ret) { 1260aba25a3eSParav Pandit pr_warn("Couldn't create InfiniBand device class\n"); 1261f794809aSJack Morgenstein goto err_comp_unbound; 1262fd75c789SNir Muchtar } 12631da177e4SLinus Torvalds 1264c9901724SLeon Romanovsky ret = rdma_nl_init(); 12651da177e4SLinus Torvalds if (ret) { 1266c9901724SLeon Romanovsky pr_warn("Couldn't init IB netlink interface: err %d\n", ret); 1267fd75c789SNir Muchtar goto err_sysfs; 12681da177e4SLinus Torvalds } 12691da177e4SLinus Torvalds 1270e3f20f02SLeon Romanovsky ret = addr_init(); 1271e3f20f02SLeon Romanovsky if (ret) { 1272e3f20f02SLeon Romanovsky pr_warn("Could't init IB address resolution\n"); 1273e3f20f02SLeon Romanovsky goto err_ibnl; 1274e3f20f02SLeon Romanovsky } 1275e3f20f02SLeon Romanovsky 12764c2cb422SMark Bloch ret = ib_mad_init(); 12774c2cb422SMark Bloch if (ret) { 12784c2cb422SMark Bloch pr_warn("Couldn't init IB MAD\n"); 12794c2cb422SMark Bloch goto err_addr; 12804c2cb422SMark Bloch } 12814c2cb422SMark Bloch 1282c2e49c92SMark Bloch ret = ib_sa_init(); 1283c2e49c92SMark Bloch if (ret) { 1284c2e49c92SMark Bloch pr_warn("Couldn't init SA\n"); 1285c2e49c92SMark Bloch goto err_mad; 1286c2e49c92SMark Bloch } 1287c2e49c92SMark Bloch 12888f408ab6SDaniel Jurgens ret = register_lsm_notifier(&ibdev_lsm_nb); 12898f408ab6SDaniel Jurgens if (ret) { 12908f408ab6SDaniel Jurgens pr_warn("Couldn't register LSM notifier. ret %d\n", ret); 1291c9901724SLeon Romanovsky goto err_sa; 12928f408ab6SDaniel Jurgens } 12938f408ab6SDaniel Jurgens 12946c80b41aSLeon Romanovsky nldev_init(); 1295c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); 12965ef8c0c1SJason Gunthorpe roce_gid_mgmt_init(); 1297b2cbae2cSRoland Dreier 1298fd75c789SNir Muchtar return 0; 1299fd75c789SNir Muchtar 1300735c631aSMark Bloch err_sa: 1301735c631aSMark Bloch ib_sa_cleanup(); 1302c2e49c92SMark Bloch err_mad: 1303c2e49c92SMark Bloch ib_mad_cleanup(); 13044c2cb422SMark Bloch err_addr: 13054c2cb422SMark Bloch addr_cleanup(); 1306e3f20f02SLeon Romanovsky err_ibnl: 1307c9901724SLeon Romanovsky rdma_nl_exit(); 1308fd75c789SNir Muchtar err_sysfs: 130955aeed06SJason Gunthorpe class_unregister(&ib_class); 1310f794809aSJack Morgenstein err_comp_unbound: 1311f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 131214d3a3b2SChristoph Hellwig err_comp: 131314d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1314fd75c789SNir Muchtar err: 1315fd75c789SNir Muchtar destroy_workqueue(ib_wq); 13161da177e4SLinus Torvalds return ret; 13171da177e4SLinus Torvalds } 13181da177e4SLinus Torvalds 13191da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 13201da177e4SLinus Torvalds { 13215ef8c0c1SJason Gunthorpe roce_gid_mgmt_cleanup(); 13226c80b41aSLeon Romanovsky nldev_exit(); 1323c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_LS); 1324c9901724SLeon Romanovsky unregister_lsm_notifier(&ibdev_lsm_nb); 1325c2e49c92SMark Bloch ib_sa_cleanup(); 13264c2cb422SMark Bloch ib_mad_cleanup(); 1327e3f20f02SLeon Romanovsky addr_cleanup(); 1328c9901724SLeon Romanovsky rdma_nl_exit(); 132955aeed06SJason Gunthorpe class_unregister(&ib_class); 1330f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 133114d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1332f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 1333f0626710STejun Heo destroy_workqueue(ib_wq); 13341da177e4SLinus Torvalds } 13351da177e4SLinus Torvalds 1336e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); 1337e3bf14bdSJason Gunthorpe 1338a9cd1a67SDmitry Monakhov subsys_initcall(ib_core_init); 13391da177e4SLinus Torvalds module_exit(ib_core_cleanup); 1340