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 { 99*3023a1e9SKamal Heib #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device_ops, 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) { 125*3023a1e9SKamal Heib if (!*(void **) ((void *) &device->ops + 126*3023a1e9SKamal Heib mandatory_table[i].offset)) { 12743c7c851SJason Gunthorpe dev_warn(&device->dev, 12843c7c851SJason Gunthorpe "Device is missing mandatory function %s\n", 12943c7c851SJason Gunthorpe 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 /* 14901b67117SParav Pandit * Caller must perform ib_device_put() to return the device reference count 15001b67117SParav Pandit * when ib_device_get_by_index() returns valid device pointer. 151f8978bd9SLeon Romanovsky */ 152f8978bd9SLeon Romanovsky struct ib_device *ib_device_get_by_index(u32 index) 153f8978bd9SLeon Romanovsky { 154f8978bd9SLeon Romanovsky struct ib_device *device; 155f8978bd9SLeon Romanovsky 156f8978bd9SLeon Romanovsky down_read(&lists_rwsem); 157f8978bd9SLeon Romanovsky device = __ib_device_get_by_index(index); 15801b67117SParav Pandit if (device) { 15901b67117SParav Pandit /* Do not return a device if unregistration has started. */ 16001b67117SParav Pandit if (!refcount_inc_not_zero(&device->refcount)) 16101b67117SParav Pandit device = NULL; 16201b67117SParav Pandit } 163f8978bd9SLeon Romanovsky up_read(&lists_rwsem); 164f8978bd9SLeon Romanovsky return device; 165f8978bd9SLeon Romanovsky } 166f8978bd9SLeon Romanovsky 16701b67117SParav Pandit void ib_device_put(struct ib_device *device) 16801b67117SParav Pandit { 16901b67117SParav Pandit if (refcount_dec_and_test(&device->refcount)) 17001b67117SParav Pandit complete(&device->unreg_completion); 17101b67117SParav Pandit } 17201b67117SParav Pandit 1731da177e4SLinus Torvalds static struct ib_device *__ib_device_get_by_name(const char *name) 1741da177e4SLinus Torvalds { 1751da177e4SLinus Torvalds struct ib_device *device; 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 178896de009SJason Gunthorpe if (!strcmp(name, dev_name(&device->dev))) 1791da177e4SLinus Torvalds return device; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds return NULL; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 184d21943ddSLeon Romanovsky int ib_device_rename(struct ib_device *ibdev, const char *name) 185d21943ddSLeon Romanovsky { 186d21943ddSLeon Romanovsky struct ib_device *device; 187d21943ddSLeon Romanovsky int ret = 0; 188d21943ddSLeon Romanovsky 189d21943ddSLeon Romanovsky if (!strcmp(name, dev_name(&ibdev->dev))) 190d21943ddSLeon Romanovsky return ret; 191d21943ddSLeon Romanovsky 192d21943ddSLeon Romanovsky mutex_lock(&device_mutex); 193d21943ddSLeon Romanovsky list_for_each_entry(device, &device_list, core_list) { 194d21943ddSLeon Romanovsky if (!strcmp(name, dev_name(&device->dev))) { 195d21943ddSLeon Romanovsky ret = -EEXIST; 196d21943ddSLeon Romanovsky goto out; 197d21943ddSLeon Romanovsky } 198d21943ddSLeon Romanovsky } 199d21943ddSLeon Romanovsky 200d21943ddSLeon Romanovsky ret = device_rename(&ibdev->dev, name); 201d21943ddSLeon Romanovsky if (ret) 202d21943ddSLeon Romanovsky goto out; 203d21943ddSLeon Romanovsky strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX); 204d21943ddSLeon Romanovsky out: 205d21943ddSLeon Romanovsky mutex_unlock(&device_mutex); 206d21943ddSLeon Romanovsky return ret; 207d21943ddSLeon Romanovsky } 208d21943ddSLeon Romanovsky 209e349f858SJason Gunthorpe static int alloc_name(struct ib_device *ibdev, const char *name) 2101da177e4SLinus Torvalds { 21165d470b3SRoland Dreier unsigned long *inuse; 2121da177e4SLinus Torvalds struct ib_device *device; 2131da177e4SLinus Torvalds int i; 2141da177e4SLinus Torvalds 21565d470b3SRoland Dreier inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); 2161da177e4SLinus Torvalds if (!inuse) 2171da177e4SLinus Torvalds return -ENOMEM; 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 220e349f858SJason Gunthorpe char buf[IB_DEVICE_NAME_MAX]; 221e349f858SJason Gunthorpe 222896de009SJason Gunthorpe if (sscanf(dev_name(&device->dev), name, &i) != 1) 2231da177e4SLinus Torvalds continue; 2241da177e4SLinus Torvalds if (i < 0 || i >= PAGE_SIZE * 8) 2251da177e4SLinus Torvalds continue; 2261da177e4SLinus Torvalds snprintf(buf, sizeof buf, name, i); 227e349f858SJason Gunthorpe if (!strcmp(buf, dev_name(&device->dev))) 2281da177e4SLinus Torvalds set_bit(i, inuse); 2291da177e4SLinus Torvalds } 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds i = find_first_zero_bit(inuse, PAGE_SIZE * 8); 2321da177e4SLinus Torvalds free_page((unsigned long) inuse); 2331da177e4SLinus Torvalds 234e349f858SJason Gunthorpe return dev_set_name(&ibdev->dev, name, i); 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds 23755aeed06SJason Gunthorpe static void ib_device_release(struct device *device) 23855aeed06SJason Gunthorpe { 23955aeed06SJason Gunthorpe struct ib_device *dev = container_of(device, struct ib_device, dev); 24055aeed06SJason Gunthorpe 2414be3a4faSParav Pandit WARN_ON(dev->reg_state == IB_DEV_REGISTERED); 2424be3a4faSParav Pandit if (dev->reg_state == IB_DEV_UNREGISTERED) { 2434be3a4faSParav Pandit /* 2444be3a4faSParav Pandit * In IB_DEV_UNINITIALIZED state, cache or port table 2454be3a4faSParav Pandit * is not even created. Free cache and port table only when 2464be3a4faSParav Pandit * device reaches UNREGISTERED state. 2474be3a4faSParav Pandit */ 24803db3a2dSMatan Barak ib_cache_release_one(dev); 24955aeed06SJason Gunthorpe kfree(dev->port_immutable); 2504be3a4faSParav Pandit } 25155aeed06SJason Gunthorpe kfree(dev); 25255aeed06SJason Gunthorpe } 25355aeed06SJason Gunthorpe 25455aeed06SJason Gunthorpe static int ib_device_uevent(struct device *device, 25555aeed06SJason Gunthorpe struct kobj_uevent_env *env) 25655aeed06SJason Gunthorpe { 257896de009SJason Gunthorpe if (add_uevent_var(env, "NAME=%s", dev_name(device))) 25855aeed06SJason Gunthorpe return -ENOMEM; 25955aeed06SJason Gunthorpe 26055aeed06SJason Gunthorpe /* 26155aeed06SJason Gunthorpe * It would be nice to pass the node GUID with the event... 26255aeed06SJason Gunthorpe */ 26355aeed06SJason Gunthorpe 26455aeed06SJason Gunthorpe return 0; 26555aeed06SJason Gunthorpe } 26655aeed06SJason Gunthorpe 26755aeed06SJason Gunthorpe static struct class ib_class = { 26855aeed06SJason Gunthorpe .name = "infiniband", 26955aeed06SJason Gunthorpe .dev_release = ib_device_release, 27055aeed06SJason Gunthorpe .dev_uevent = ib_device_uevent, 27155aeed06SJason Gunthorpe }; 27255aeed06SJason Gunthorpe 2731da177e4SLinus Torvalds /** 2741da177e4SLinus Torvalds * ib_alloc_device - allocate an IB device struct 2751da177e4SLinus Torvalds * @size:size of structure to allocate 2761da177e4SLinus Torvalds * 2771da177e4SLinus Torvalds * Low-level drivers should use ib_alloc_device() to allocate &struct 2781da177e4SLinus Torvalds * ib_device. @size is the size of the structure to be allocated, 2791da177e4SLinus Torvalds * including any private data used by the low-level driver. 2801da177e4SLinus Torvalds * ib_dealloc_device() must be used to free structures allocated with 2811da177e4SLinus Torvalds * ib_alloc_device(). 2821da177e4SLinus Torvalds */ 2831da177e4SLinus Torvalds struct ib_device *ib_alloc_device(size_t size) 2841da177e4SLinus Torvalds { 28555aeed06SJason Gunthorpe struct ib_device *device; 2861da177e4SLinus Torvalds 28755aeed06SJason Gunthorpe if (WARN_ON(size < sizeof(struct ib_device))) 28855aeed06SJason Gunthorpe return NULL; 28955aeed06SJason Gunthorpe 29055aeed06SJason Gunthorpe device = kzalloc(size, GFP_KERNEL); 29155aeed06SJason Gunthorpe if (!device) 29255aeed06SJason Gunthorpe return NULL; 29355aeed06SJason Gunthorpe 29402d8883fSLeon Romanovsky rdma_restrack_init(&device->res); 29502d8883fSLeon Romanovsky 29655aeed06SJason Gunthorpe device->dev.class = &ib_class; 29755aeed06SJason Gunthorpe device_initialize(&device->dev); 29855aeed06SJason Gunthorpe 29955aeed06SJason Gunthorpe dev_set_drvdata(&device->dev, device); 30055aeed06SJason Gunthorpe 30155aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->event_handler_list); 30255aeed06SJason Gunthorpe spin_lock_init(&device->event_handler_lock); 303e1f540c3SParav Pandit rwlock_init(&device->client_data_lock); 30455aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->client_data_list); 30555aeed06SJason Gunthorpe INIT_LIST_HEAD(&device->port_list); 30601b67117SParav Pandit refcount_set(&device->refcount, 1); 30701b67117SParav Pandit init_completion(&device->unreg_completion); 30855aeed06SJason Gunthorpe 30955aeed06SJason Gunthorpe return device; 3101da177e4SLinus Torvalds } 3111da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_device); 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds /** 3141da177e4SLinus Torvalds * ib_dealloc_device - free an IB device struct 3151da177e4SLinus Torvalds * @device:structure to free 3161da177e4SLinus Torvalds * 3171da177e4SLinus Torvalds * Free a structure allocated with ib_alloc_device(). 3181da177e4SLinus Torvalds */ 3191da177e4SLinus Torvalds void ib_dealloc_device(struct ib_device *device) 3201da177e4SLinus Torvalds { 3214512acd0SParav Pandit WARN_ON(!list_empty(&device->client_data_list)); 32255aeed06SJason Gunthorpe WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && 32355aeed06SJason Gunthorpe device->reg_state != IB_DEV_UNINITIALIZED); 324103140ecSLeon Romanovsky rdma_restrack_clean(&device->res); 325924b8900SLeon Romanovsky put_device(&device->dev); 3261da177e4SLinus Torvalds } 3271da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_device); 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds static int add_client_context(struct ib_device *device, struct ib_client *client) 3301da177e4SLinus Torvalds { 3311da177e4SLinus Torvalds struct ib_client_data *context; 3321da177e4SLinus Torvalds 3332d65f49fSParav Pandit context = kmalloc(sizeof(*context), GFP_KERNEL); 334a0b3455fSLeon Romanovsky if (!context) 3351da177e4SLinus Torvalds return -ENOMEM; 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds context->client = client; 3381da177e4SLinus Torvalds context->data = NULL; 3397c1eb45aSHaggai Eran context->going_down = false; 3401da177e4SLinus Torvalds 3417c1eb45aSHaggai Eran down_write(&lists_rwsem); 342e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 3431da177e4SLinus Torvalds list_add(&context->list, &device->client_data_list); 344e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 3457c1eb45aSHaggai Eran up_write(&lists_rwsem); 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds return 0; 3481da177e4SLinus Torvalds } 3491da177e4SLinus Torvalds 350337877a4SIra Weiny static int verify_immutable(const struct ib_device *dev, u8 port) 351337877a4SIra Weiny { 352337877a4SIra Weiny return WARN_ON(!rdma_cap_ib_mad(dev, port) && 353337877a4SIra Weiny rdma_max_mad_size(dev, port) != 0); 354337877a4SIra Weiny } 355337877a4SIra Weiny 3567738613eSIra Weiny static int read_port_immutable(struct ib_device *device) 3575eb620c8SYosef Etigin { 35855aeed06SJason Gunthorpe int ret; 3597738613eSIra Weiny u8 start_port = rdma_start_port(device); 3607738613eSIra Weiny u8 end_port = rdma_end_port(device); 3617738613eSIra Weiny u8 port; 3625eb620c8SYosef Etigin 3637738613eSIra Weiny /** 3647738613eSIra Weiny * device->port_immutable is indexed directly by the port number to make 3657738613eSIra Weiny * access to this data as efficient as possible. 3667738613eSIra Weiny * 3677738613eSIra Weiny * Therefore port_immutable is declared as a 1 based array with 3687738613eSIra Weiny * potential empty slots at the beginning. 3697738613eSIra Weiny */ 3706396bb22SKees Cook device->port_immutable = kcalloc(end_port + 1, 3716396bb22SKees Cook sizeof(*device->port_immutable), 3725eb620c8SYosef Etigin GFP_KERNEL); 3737738613eSIra Weiny if (!device->port_immutable) 37455aeed06SJason Gunthorpe return -ENOMEM; 3755eb620c8SYosef Etigin 3767738613eSIra Weiny for (port = start_port; port <= end_port; ++port) { 377*3023a1e9SKamal Heib ret = device->ops.get_port_immutable( 378*3023a1e9SKamal Heib device, port, &device->port_immutable[port]); 3795eb620c8SYosef Etigin if (ret) 3805eb620c8SYosef Etigin return ret; 38155aeed06SJason Gunthorpe 38255aeed06SJason Gunthorpe if (verify_immutable(device, port)) 38355aeed06SJason Gunthorpe return -EINVAL; 38455aeed06SJason Gunthorpe } 38555aeed06SJason Gunthorpe return 0; 3865eb620c8SYosef Etigin } 3875eb620c8SYosef Etigin 3889abb0d1bSLeon Romanovsky void ib_get_device_fw_str(struct ib_device *dev, char *str) 3895fa76c20SIra Weiny { 390*3023a1e9SKamal Heib if (dev->ops.get_dev_fw_str) 391*3023a1e9SKamal Heib dev->ops.get_dev_fw_str(dev, str); 3925fa76c20SIra Weiny else 3935fa76c20SIra Weiny str[0] = '\0'; 3945fa76c20SIra Weiny } 3955fa76c20SIra Weiny EXPORT_SYMBOL(ib_get_device_fw_str); 3965fa76c20SIra Weiny 397d291f1a6SDaniel Jurgens static int setup_port_pkey_list(struct ib_device *device) 398d291f1a6SDaniel Jurgens { 399d291f1a6SDaniel Jurgens int i; 400d291f1a6SDaniel Jurgens 401d291f1a6SDaniel Jurgens /** 402d291f1a6SDaniel Jurgens * device->port_pkey_list is indexed directly by the port number, 403d291f1a6SDaniel Jurgens * Therefore it is declared as a 1 based array with potential empty 404d291f1a6SDaniel Jurgens * slots at the beginning. 405d291f1a6SDaniel Jurgens */ 406d291f1a6SDaniel Jurgens device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, 407d291f1a6SDaniel Jurgens sizeof(*device->port_pkey_list), 408d291f1a6SDaniel Jurgens GFP_KERNEL); 409d291f1a6SDaniel Jurgens 410d291f1a6SDaniel Jurgens if (!device->port_pkey_list) 411d291f1a6SDaniel Jurgens return -ENOMEM; 412d291f1a6SDaniel Jurgens 413d291f1a6SDaniel Jurgens for (i = 0; i < (rdma_end_port(device) + 1); i++) { 414d291f1a6SDaniel Jurgens spin_lock_init(&device->port_pkey_list[i].list_lock); 415d291f1a6SDaniel Jurgens INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); 416d291f1a6SDaniel Jurgens } 417d291f1a6SDaniel Jurgens 418d291f1a6SDaniel Jurgens return 0; 419d291f1a6SDaniel Jurgens } 420d291f1a6SDaniel Jurgens 4218f408ab6SDaniel Jurgens static void ib_policy_change_task(struct work_struct *work) 4228f408ab6SDaniel Jurgens { 4238f408ab6SDaniel Jurgens struct ib_device *dev; 4248f408ab6SDaniel Jurgens 4258f408ab6SDaniel Jurgens down_read(&lists_rwsem); 4268f408ab6SDaniel Jurgens list_for_each_entry(dev, &device_list, core_list) { 4278f408ab6SDaniel Jurgens int i; 4288f408ab6SDaniel Jurgens 4298f408ab6SDaniel Jurgens for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { 4308f408ab6SDaniel Jurgens u64 sp; 4318f408ab6SDaniel Jurgens int ret = ib_get_cached_subnet_prefix(dev, 4328f408ab6SDaniel Jurgens i, 4338f408ab6SDaniel Jurgens &sp); 4348f408ab6SDaniel Jurgens 4358f408ab6SDaniel Jurgens WARN_ONCE(ret, 4368f408ab6SDaniel Jurgens "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", 4378f408ab6SDaniel Jurgens ret); 438a750cfdeSDaniel Jurgens if (!ret) 4398f408ab6SDaniel Jurgens ib_security_cache_change(dev, i, sp); 4408f408ab6SDaniel Jurgens } 4418f408ab6SDaniel Jurgens } 4428f408ab6SDaniel Jurgens up_read(&lists_rwsem); 4438f408ab6SDaniel Jurgens } 4448f408ab6SDaniel Jurgens 4458f408ab6SDaniel Jurgens static int ib_security_change(struct notifier_block *nb, unsigned long event, 4468f408ab6SDaniel Jurgens void *lsm_data) 4478f408ab6SDaniel Jurgens { 4488f408ab6SDaniel Jurgens if (event != LSM_POLICY_CHANGE) 4498f408ab6SDaniel Jurgens return NOTIFY_DONE; 4508f408ab6SDaniel Jurgens 4518f408ab6SDaniel Jurgens schedule_work(&ib_policy_change_work); 4528f408ab6SDaniel Jurgens 4538f408ab6SDaniel Jurgens return NOTIFY_OK; 4548f408ab6SDaniel Jurgens } 4558f408ab6SDaniel Jurgens 4561da177e4SLinus Torvalds /** 457ecc82c53SLeon Romanovsky * __dev_new_index - allocate an device index 458ecc82c53SLeon Romanovsky * 459ecc82c53SLeon Romanovsky * Returns a suitable unique value for a new device interface 460ecc82c53SLeon Romanovsky * number. It assumes that there are less than 2^32-1 ib devices 461ecc82c53SLeon Romanovsky * will be present in the system. 462ecc82c53SLeon Romanovsky */ 463ecc82c53SLeon Romanovsky static u32 __dev_new_index(void) 464ecc82c53SLeon Romanovsky { 465ecc82c53SLeon Romanovsky /* 466ecc82c53SLeon Romanovsky * The device index to allow stable naming. 467ecc82c53SLeon Romanovsky * Similar to struct net -> ifindex. 468ecc82c53SLeon Romanovsky */ 469ecc82c53SLeon Romanovsky static u32 index; 470ecc82c53SLeon Romanovsky 471ecc82c53SLeon Romanovsky for (;;) { 472ecc82c53SLeon Romanovsky if (!(++index)) 473ecc82c53SLeon Romanovsky index = 1; 474ecc82c53SLeon Romanovsky 475ecc82c53SLeon Romanovsky if (!__ib_device_get_by_index(index)) 476ecc82c53SLeon Romanovsky return index; 477ecc82c53SLeon Romanovsky } 478ecc82c53SLeon Romanovsky } 479ecc82c53SLeon Romanovsky 480548cb4fbSParav Pandit static void setup_dma_device(struct ib_device *device) 4811da177e4SLinus Torvalds { 48299db9494SBart Van Assche struct device *parent = device->dev.parent; 4831da177e4SLinus Torvalds 4840957c29fSBart Van Assche WARN_ON_ONCE(device->dma_device); 4850957c29fSBart Van Assche if (device->dev.dma_ops) { 4860957c29fSBart Van Assche /* 4870957c29fSBart Van Assche * The caller provided custom DMA operations. Copy the 4880957c29fSBart Van Assche * DMA-related fields that are used by e.g. dma_alloc_coherent() 4890957c29fSBart Van Assche * into device->dev. 4900957c29fSBart Van Assche */ 4910957c29fSBart Van Assche device->dma_device = &device->dev; 49202ee9da3SBart Van Assche if (!device->dev.dma_mask) { 49302ee9da3SBart Van Assche if (parent) 49499db9494SBart Van Assche device->dev.dma_mask = parent->dma_mask; 49502ee9da3SBart Van Assche else 49602ee9da3SBart Van Assche WARN_ON_ONCE(true); 49702ee9da3SBart Van Assche } 49802ee9da3SBart Van Assche if (!device->dev.coherent_dma_mask) { 49902ee9da3SBart Van Assche if (parent) 5000957c29fSBart Van Assche device->dev.coherent_dma_mask = 5010957c29fSBart Van Assche parent->coherent_dma_mask; 50202ee9da3SBart Van Assche else 50302ee9da3SBart Van Assche WARN_ON_ONCE(true); 50402ee9da3SBart Van Assche } 5050957c29fSBart Van Assche } else { 5060957c29fSBart Van Assche /* 5070957c29fSBart Van Assche * The caller did not provide custom DMA operations. Use the 5080957c29fSBart Van Assche * DMA mapping operations of the parent device. 5090957c29fSBart Van Assche */ 51002ee9da3SBart Van Assche WARN_ON_ONCE(!parent); 5110957c29fSBart Van Assche device->dma_device = parent; 5120957c29fSBart Van Assche } 513548cb4fbSParav Pandit } 514548cb4fbSParav Pandit 515548cb4fbSParav Pandit static void cleanup_device(struct ib_device *device) 516548cb4fbSParav Pandit { 517548cb4fbSParav Pandit ib_cache_cleanup_one(device); 518548cb4fbSParav Pandit ib_cache_release_one(device); 519548cb4fbSParav Pandit kfree(device->port_pkey_list); 520548cb4fbSParav Pandit kfree(device->port_immutable); 521548cb4fbSParav Pandit } 522548cb4fbSParav Pandit 523548cb4fbSParav Pandit static int setup_device(struct ib_device *device) 524548cb4fbSParav Pandit { 525548cb4fbSParav Pandit struct ib_udata uhw = {.outlen = 0, .inlen = 0}; 526548cb4fbSParav Pandit int ret; 527548cb4fbSParav Pandit 528548cb4fbSParav Pandit ret = ib_device_check_mandatory(device); 529548cb4fbSParav Pandit if (ret) 530548cb4fbSParav Pandit return ret; 531548cb4fbSParav Pandit 532548cb4fbSParav Pandit ret = read_port_immutable(device); 533548cb4fbSParav Pandit if (ret) { 534548cb4fbSParav Pandit dev_warn(&device->dev, 535548cb4fbSParav Pandit "Couldn't create per port immutable data\n"); 536548cb4fbSParav Pandit return ret; 537548cb4fbSParav Pandit } 538548cb4fbSParav Pandit 539548cb4fbSParav Pandit memset(&device->attrs, 0, sizeof(device->attrs)); 540*3023a1e9SKamal Heib ret = device->ops.query_device(device, &device->attrs, &uhw); 541548cb4fbSParav Pandit if (ret) { 542548cb4fbSParav Pandit dev_warn(&device->dev, 543548cb4fbSParav Pandit "Couldn't query the device attributes\n"); 544548cb4fbSParav Pandit goto port_cleanup; 545548cb4fbSParav Pandit } 546548cb4fbSParav Pandit 547548cb4fbSParav Pandit ret = setup_port_pkey_list(device); 548548cb4fbSParav Pandit if (ret) { 549548cb4fbSParav Pandit dev_warn(&device->dev, "Couldn't create per port_pkey_list\n"); 550548cb4fbSParav Pandit goto port_cleanup; 551548cb4fbSParav Pandit } 552548cb4fbSParav Pandit 553548cb4fbSParav Pandit ret = ib_cache_setup_one(device); 554548cb4fbSParav Pandit if (ret) { 555548cb4fbSParav Pandit dev_warn(&device->dev, 556548cb4fbSParav Pandit "Couldn't set up InfiniBand P_Key/GID cache\n"); 557548cb4fbSParav Pandit goto pkey_cleanup; 558548cb4fbSParav Pandit } 559548cb4fbSParav Pandit return 0; 560548cb4fbSParav Pandit 561548cb4fbSParav Pandit pkey_cleanup: 562548cb4fbSParav Pandit kfree(device->port_pkey_list); 563548cb4fbSParav Pandit port_cleanup: 564548cb4fbSParav Pandit kfree(device->port_immutable); 565548cb4fbSParav Pandit return ret; 566548cb4fbSParav Pandit } 567548cb4fbSParav Pandit 568548cb4fbSParav Pandit /** 569548cb4fbSParav Pandit * ib_register_device - Register an IB device with IB core 570548cb4fbSParav Pandit * @device:Device to register 571548cb4fbSParav Pandit * 572548cb4fbSParav Pandit * Low-level drivers use ib_register_device() to register their 573548cb4fbSParav Pandit * devices with the IB core. All registered clients will receive a 574548cb4fbSParav Pandit * callback for each device that is added. @device must be allocated 575548cb4fbSParav Pandit * with ib_alloc_device(). 576548cb4fbSParav Pandit */ 577548cb4fbSParav Pandit int ib_register_device(struct ib_device *device, const char *name, 578548cb4fbSParav Pandit int (*port_callback)(struct ib_device *, u8, 579548cb4fbSParav Pandit struct kobject *)) 580548cb4fbSParav Pandit { 581548cb4fbSParav Pandit int ret; 582548cb4fbSParav Pandit struct ib_client *client; 583548cb4fbSParav Pandit 584548cb4fbSParav Pandit setup_dma_device(device); 5851da177e4SLinus Torvalds 58695ed644fSIngo Molnar mutex_lock(&device_mutex); 5871da177e4SLinus Torvalds 588e349f858SJason Gunthorpe if (strchr(name, '%')) { 589e349f858SJason Gunthorpe ret = alloc_name(device, name); 590e349f858SJason Gunthorpe if (ret) 591e349f858SJason Gunthorpe goto out; 592e349f858SJason Gunthorpe } else { 593e349f858SJason Gunthorpe ret = dev_set_name(&device->dev, name); 5941da177e4SLinus Torvalds if (ret) 5951da177e4SLinus Torvalds goto out; 5961da177e4SLinus Torvalds } 597e349f858SJason Gunthorpe if (__ib_device_get_by_name(dev_name(&device->dev))) { 598e349f858SJason Gunthorpe ret = -ENFILE; 599e349f858SJason Gunthorpe goto out; 600e349f858SJason Gunthorpe } 601e349f858SJason Gunthorpe strlcpy(device->name, dev_name(&device->dev), IB_DEVICE_NAME_MAX); 6021da177e4SLinus Torvalds 603548cb4fbSParav Pandit ret = setup_device(device); 604548cb4fbSParav Pandit if (ret) 6051da177e4SLinus Torvalds goto out; 60603db3a2dSMatan Barak 60727399350SParav Pandit device->index = __dev_new_index(); 60827399350SParav Pandit 60943579b5fSParav Pandit ret = ib_device_register_rdmacg(device); 61043579b5fSParav Pandit if (ret) { 61143c7c851SJason Gunthorpe dev_warn(&device->dev, 61243c7c851SJason Gunthorpe "Couldn't register device with rdma cgroup\n"); 613548cb4fbSParav Pandit goto dev_cleanup; 6143e153a93SIra Weiny } 6153e153a93SIra Weiny 6169a6edb60SRalph Campbell ret = ib_device_register_sysfs(device, port_callback); 6171da177e4SLinus Torvalds if (ret) { 61843c7c851SJason Gunthorpe dev_warn(&device->dev, 61943c7c851SJason Gunthorpe "Couldn't register device with driver model\n"); 6202fb4f4eaSParav Pandit goto cg_cleanup; 6211da177e4SLinus Torvalds } 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds device->reg_state = IB_DEV_REGISTERED; 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds list_for_each_entry(client, &client_list, list) 626b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 6271da177e4SLinus Torvalds client->add(device); 6281da177e4SLinus Torvalds 6295aa44bb9SHaggai Eran down_write(&lists_rwsem); 6305aa44bb9SHaggai Eran list_add_tail(&device->core_list, &device_list); 6315aa44bb9SHaggai Eran up_write(&lists_rwsem); 6324be3a4faSParav Pandit mutex_unlock(&device_mutex); 6334be3a4faSParav Pandit return 0; 6344be3a4faSParav Pandit 6352fb4f4eaSParav Pandit cg_cleanup: 6362fb4f4eaSParav Pandit ib_device_unregister_rdmacg(device); 637548cb4fbSParav Pandit dev_cleanup: 638548cb4fbSParav Pandit cleanup_device(device); 6391da177e4SLinus Torvalds out: 64095ed644fSIngo Molnar mutex_unlock(&device_mutex); 6411da177e4SLinus Torvalds return ret; 6421da177e4SLinus Torvalds } 6431da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_device); 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds /** 6461da177e4SLinus Torvalds * ib_unregister_device - Unregister an IB device 6471da177e4SLinus Torvalds * @device:Device to unregister 6481da177e4SLinus Torvalds * 6491da177e4SLinus Torvalds * Unregister an IB device. All clients will receive a remove callback. 6501da177e4SLinus Torvalds */ 6511da177e4SLinus Torvalds void ib_unregister_device(struct ib_device *device) 6521da177e4SLinus Torvalds { 6531da177e4SLinus Torvalds struct ib_client_data *context, *tmp; 6541da177e4SLinus Torvalds unsigned long flags; 6551da177e4SLinus Torvalds 65601b67117SParav Pandit /* 65701b67117SParav Pandit * Wait for all netlink command callers to finish working on the 65801b67117SParav Pandit * device. 65901b67117SParav Pandit */ 66001b67117SParav Pandit ib_device_put(device); 66101b67117SParav Pandit wait_for_completion(&device->unreg_completion); 66201b67117SParav Pandit 66395ed644fSIngo Molnar mutex_lock(&device_mutex); 6641da177e4SLinus Torvalds 6655aa44bb9SHaggai Eran down_write(&lists_rwsem); 6665aa44bb9SHaggai Eran list_del(&device->core_list); 667e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 668f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) 6697c1eb45aSHaggai Eran context->going_down = true; 670e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 6717c1eb45aSHaggai Eran downgrade_write(&lists_rwsem); 6725aa44bb9SHaggai Eran 673f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) { 6747c1eb45aSHaggai Eran if (context->client->remove) 6757c1eb45aSHaggai Eran context->client->remove(device, context->data); 6767c1eb45aSHaggai Eran } 6777c1eb45aSHaggai Eran up_read(&lists_rwsem); 6781da177e4SLinus Torvalds 6799206dff1SRoland Dreier ib_device_unregister_sysfs(device); 680c715a395SParav Pandit ib_device_unregister_rdmacg(device); 68106f8174aSShiraz Saleem 68206f8174aSShiraz Saleem mutex_unlock(&device_mutex); 68306f8174aSShiraz Saleem 68403db3a2dSMatan Barak ib_cache_cleanup_one(device); 6859206dff1SRoland Dreier 686d291f1a6SDaniel Jurgens ib_security_destroy_port_pkey_list(device); 687d291f1a6SDaniel Jurgens kfree(device->port_pkey_list); 688d291f1a6SDaniel Jurgens 6897c1eb45aSHaggai Eran down_write(&lists_rwsem); 690e1f540c3SParav Pandit write_lock_irqsave(&device->client_data_lock, flags); 6914512acd0SParav Pandit list_for_each_entry_safe(context, tmp, &device->client_data_list, 6924512acd0SParav Pandit list) { 6934512acd0SParav Pandit list_del(&context->list); 6941da177e4SLinus Torvalds kfree(context); 6954512acd0SParav Pandit } 696e1f540c3SParav Pandit write_unlock_irqrestore(&device->client_data_lock, flags); 6977c1eb45aSHaggai Eran up_write(&lists_rwsem); 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds device->reg_state = IB_DEV_UNREGISTERED; 7001da177e4SLinus Torvalds } 7011da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_device); 7021da177e4SLinus Torvalds 7031da177e4SLinus Torvalds /** 7041da177e4SLinus Torvalds * ib_register_client - Register an IB client 7051da177e4SLinus Torvalds * @client:Client to register 7061da177e4SLinus Torvalds * 7071da177e4SLinus Torvalds * Upper level users of the IB drivers can use ib_register_client() to 7081da177e4SLinus Torvalds * register callbacks for IB device addition and removal. When an IB 7091da177e4SLinus Torvalds * device is added, each registered client's add method will be called 7101da177e4SLinus Torvalds * (in the order the clients were registered), and when a device is 7111da177e4SLinus Torvalds * removed, each client's remove method will be called (in the reverse 7121da177e4SLinus Torvalds * order that clients were registered). In addition, when 7131da177e4SLinus Torvalds * ib_register_client() is called, the client will receive an add 7141da177e4SLinus Torvalds * callback for all devices already registered. 7151da177e4SLinus Torvalds */ 7161da177e4SLinus Torvalds int ib_register_client(struct ib_client *client) 7171da177e4SLinus Torvalds { 7181da177e4SLinus Torvalds struct ib_device *device; 7191da177e4SLinus Torvalds 72095ed644fSIngo Molnar mutex_lock(&device_mutex); 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) 723b059e210SSagi Grimberg if (!add_client_context(device, client) && client->add) 7241da177e4SLinus Torvalds client->add(device); 7251da177e4SLinus Torvalds 7265aa44bb9SHaggai Eran down_write(&lists_rwsem); 7275aa44bb9SHaggai Eran list_add_tail(&client->list, &client_list); 7285aa44bb9SHaggai Eran up_write(&lists_rwsem); 7295aa44bb9SHaggai Eran 73095ed644fSIngo Molnar mutex_unlock(&device_mutex); 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds return 0; 7331da177e4SLinus Torvalds } 7341da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_client); 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds /** 7371da177e4SLinus Torvalds * ib_unregister_client - Unregister an IB client 7381da177e4SLinus Torvalds * @client:Client to unregister 7391da177e4SLinus Torvalds * 7401da177e4SLinus Torvalds * Upper level users use ib_unregister_client() to remove their client 7411da177e4SLinus Torvalds * registration. When ib_unregister_client() is called, the client 7421da177e4SLinus Torvalds * will receive a remove callback for each IB device still registered. 7431da177e4SLinus Torvalds */ 7441da177e4SLinus Torvalds void ib_unregister_client(struct ib_client *client) 7451da177e4SLinus Torvalds { 746f7b65d9bSParav Pandit struct ib_client_data *context; 7471da177e4SLinus Torvalds struct ib_device *device; 7481da177e4SLinus Torvalds 74995ed644fSIngo Molnar mutex_lock(&device_mutex); 7501da177e4SLinus Torvalds 7515aa44bb9SHaggai Eran down_write(&lists_rwsem); 7525aa44bb9SHaggai Eran list_del(&client->list); 7535aa44bb9SHaggai Eran up_write(&lists_rwsem); 7545aa44bb9SHaggai Eran 7551da177e4SLinus Torvalds list_for_each_entry(device, &device_list, core_list) { 7567c1eb45aSHaggai Eran struct ib_client_data *found_context = NULL; 7571da177e4SLinus Torvalds 7587c1eb45aSHaggai Eran down_write(&lists_rwsem); 759e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 760f7b65d9bSParav Pandit list_for_each_entry(context, &device->client_data_list, list) 7611da177e4SLinus Torvalds if (context->client == client) { 7627c1eb45aSHaggai Eran context->going_down = true; 7637c1eb45aSHaggai Eran found_context = context; 7647c1eb45aSHaggai Eran break; 7651da177e4SLinus Torvalds } 766e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 7677c1eb45aSHaggai Eran up_write(&lists_rwsem); 7687c1eb45aSHaggai Eran 7697c1eb45aSHaggai Eran if (client->remove) 7707c1eb45aSHaggai Eran client->remove(device, found_context ? 7717c1eb45aSHaggai Eran found_context->data : NULL); 7727c1eb45aSHaggai Eran 7737c1eb45aSHaggai Eran if (!found_context) { 77443c7c851SJason Gunthorpe dev_warn(&device->dev, 77543c7c851SJason Gunthorpe "No client context found for %s\n", 77643c7c851SJason Gunthorpe client->name); 7777c1eb45aSHaggai Eran continue; 7787c1eb45aSHaggai Eran } 7797c1eb45aSHaggai Eran 7807c1eb45aSHaggai Eran down_write(&lists_rwsem); 781e1f540c3SParav Pandit write_lock_irq(&device->client_data_lock); 7827c1eb45aSHaggai Eran list_del(&found_context->list); 783e1f540c3SParav Pandit write_unlock_irq(&device->client_data_lock); 7847c1eb45aSHaggai Eran up_write(&lists_rwsem); 78593688ddbSParav Pandit kfree(found_context); 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds 78895ed644fSIngo Molnar mutex_unlock(&device_mutex); 7891da177e4SLinus Torvalds } 7901da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_client); 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvalds /** 7931da177e4SLinus Torvalds * ib_get_client_data - Get IB client context 7941da177e4SLinus Torvalds * @device:Device to get context for 7951da177e4SLinus Torvalds * @client:Client to get context for 7961da177e4SLinus Torvalds * 7971da177e4SLinus Torvalds * ib_get_client_data() returns client context set with 7981da177e4SLinus Torvalds * ib_set_client_data(). 7991da177e4SLinus Torvalds */ 8001da177e4SLinus Torvalds void *ib_get_client_data(struct ib_device *device, struct ib_client *client) 8011da177e4SLinus Torvalds { 8021da177e4SLinus Torvalds struct ib_client_data *context; 8031da177e4SLinus Torvalds void *ret = NULL; 8041da177e4SLinus Torvalds unsigned long flags; 8051da177e4SLinus Torvalds 806e1f540c3SParav Pandit read_lock_irqsave(&device->client_data_lock, flags); 8071da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 8081da177e4SLinus Torvalds if (context->client == client) { 8091da177e4SLinus Torvalds ret = context->data; 8101da177e4SLinus Torvalds break; 8111da177e4SLinus Torvalds } 812e1f540c3SParav Pandit read_unlock_irqrestore(&device->client_data_lock, flags); 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds return ret; 8151da177e4SLinus Torvalds } 8161da177e4SLinus Torvalds EXPORT_SYMBOL(ib_get_client_data); 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds /** 8199cd330d3SKrishna Kumar * ib_set_client_data - Set IB client context 8201da177e4SLinus Torvalds * @device:Device to set context for 8211da177e4SLinus Torvalds * @client:Client to set context for 8221da177e4SLinus Torvalds * @data:Context to set 8231da177e4SLinus Torvalds * 8241da177e4SLinus Torvalds * ib_set_client_data() sets client context that can be retrieved with 8251da177e4SLinus Torvalds * ib_get_client_data(). 8261da177e4SLinus Torvalds */ 8271da177e4SLinus Torvalds void ib_set_client_data(struct ib_device *device, struct ib_client *client, 8281da177e4SLinus Torvalds void *data) 8291da177e4SLinus Torvalds { 8301da177e4SLinus Torvalds struct ib_client_data *context; 8311da177e4SLinus Torvalds unsigned long flags; 8321da177e4SLinus Torvalds 833e1f540c3SParav Pandit write_lock_irqsave(&device->client_data_lock, flags); 8341da177e4SLinus Torvalds list_for_each_entry(context, &device->client_data_list, list) 8351da177e4SLinus Torvalds if (context->client == client) { 8361da177e4SLinus Torvalds context->data = data; 8371da177e4SLinus Torvalds goto out; 8381da177e4SLinus Torvalds } 8391da177e4SLinus Torvalds 84043c7c851SJason Gunthorpe dev_warn(&device->dev, "No client context found for %s\n", 84143c7c851SJason Gunthorpe client->name); 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds out: 844e1f540c3SParav Pandit write_unlock_irqrestore(&device->client_data_lock, flags); 8451da177e4SLinus Torvalds } 8461da177e4SLinus Torvalds EXPORT_SYMBOL(ib_set_client_data); 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds /** 8491da177e4SLinus Torvalds * ib_register_event_handler - Register an IB event handler 8501da177e4SLinus Torvalds * @event_handler:Handler to register 8511da177e4SLinus Torvalds * 8521da177e4SLinus Torvalds * ib_register_event_handler() registers an event handler that will be 8531da177e4SLinus Torvalds * called back when asynchronous IB events occur (as defined in 8541da177e4SLinus Torvalds * chapter 11 of the InfiniBand Architecture Specification). This 8551da177e4SLinus Torvalds * callback may occur in interrupt context. 8561da177e4SLinus Torvalds */ 857dcc9881eSLeon Romanovsky void ib_register_event_handler(struct ib_event_handler *event_handler) 8581da177e4SLinus Torvalds { 8591da177e4SLinus Torvalds unsigned long flags; 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8621da177e4SLinus Torvalds list_add_tail(&event_handler->list, 8631da177e4SLinus Torvalds &event_handler->device->event_handler_list); 8641da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8651da177e4SLinus Torvalds } 8661da177e4SLinus Torvalds EXPORT_SYMBOL(ib_register_event_handler); 8671da177e4SLinus Torvalds 8681da177e4SLinus Torvalds /** 8691da177e4SLinus Torvalds * ib_unregister_event_handler - Unregister an event handler 8701da177e4SLinus Torvalds * @event_handler:Handler to unregister 8711da177e4SLinus Torvalds * 8721da177e4SLinus Torvalds * Unregister an event handler registered with 8731da177e4SLinus Torvalds * ib_register_event_handler(). 8741da177e4SLinus Torvalds */ 875dcc9881eSLeon Romanovsky void ib_unregister_event_handler(struct ib_event_handler *event_handler) 8761da177e4SLinus Torvalds { 8771da177e4SLinus Torvalds unsigned long flags; 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); 8801da177e4SLinus Torvalds list_del(&event_handler->list); 8811da177e4SLinus Torvalds spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); 8821da177e4SLinus Torvalds } 8831da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unregister_event_handler); 8841da177e4SLinus Torvalds 8851da177e4SLinus Torvalds /** 8861da177e4SLinus Torvalds * ib_dispatch_event - Dispatch an asynchronous event 8871da177e4SLinus Torvalds * @event:Event to dispatch 8881da177e4SLinus Torvalds * 8891da177e4SLinus Torvalds * Low-level drivers must call ib_dispatch_event() to dispatch the 8901da177e4SLinus Torvalds * event to all registered event handlers when an asynchronous event 8911da177e4SLinus Torvalds * occurs. 8921da177e4SLinus Torvalds */ 8931da177e4SLinus Torvalds void ib_dispatch_event(struct ib_event *event) 8941da177e4SLinus Torvalds { 8951da177e4SLinus Torvalds unsigned long flags; 8961da177e4SLinus Torvalds struct ib_event_handler *handler; 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds spin_lock_irqsave(&event->device->event_handler_lock, flags); 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds list_for_each_entry(handler, &event->device->event_handler_list, list) 9011da177e4SLinus Torvalds handler->handler(handler, event); 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvalds spin_unlock_irqrestore(&event->device->event_handler_lock, flags); 9041da177e4SLinus Torvalds } 9051da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dispatch_event); 9061da177e4SLinus Torvalds 9071da177e4SLinus Torvalds /** 9081da177e4SLinus Torvalds * ib_query_port - Query IB port attributes 9091da177e4SLinus Torvalds * @device:Device to query 9101da177e4SLinus Torvalds * @port_num:Port number to query 9111da177e4SLinus Torvalds * @port_attr:Port attributes 9121da177e4SLinus Torvalds * 9131da177e4SLinus Torvalds * ib_query_port() returns the attributes of a port through the 9141da177e4SLinus Torvalds * @port_attr pointer. 9151da177e4SLinus Torvalds */ 9161da177e4SLinus Torvalds int ib_query_port(struct ib_device *device, 9171da177e4SLinus Torvalds u8 port_num, 9181da177e4SLinus Torvalds struct ib_port_attr *port_attr) 9191da177e4SLinus Torvalds { 920fad61ad4SEli Cohen union ib_gid gid; 921fad61ad4SEli Cohen int err; 922fad61ad4SEli Cohen 92324dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 924116c0074SRoland Dreier return -EINVAL; 925116c0074SRoland Dreier 926fad61ad4SEli Cohen memset(port_attr, 0, sizeof(*port_attr)); 927*3023a1e9SKamal Heib err = device->ops.query_port(device, port_num, port_attr); 928fad61ad4SEli Cohen if (err || port_attr->subnet_prefix) 929fad61ad4SEli Cohen return err; 930fad61ad4SEli Cohen 931d7012467SEli Cohen if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) 932d7012467SEli Cohen return 0; 933d7012467SEli Cohen 934*3023a1e9SKamal Heib err = device->ops.query_gid(device, port_num, 0, &gid); 935fad61ad4SEli Cohen if (err) 936fad61ad4SEli Cohen return err; 937fad61ad4SEli Cohen 938fad61ad4SEli Cohen port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); 939fad61ad4SEli Cohen return 0; 9401da177e4SLinus Torvalds } 9411da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_port); 9421da177e4SLinus Torvalds 9431da177e4SLinus Torvalds /** 94403db3a2dSMatan Barak * ib_enum_roce_netdev - enumerate all RoCE ports 94503db3a2dSMatan Barak * @ib_dev : IB device we want to query 94603db3a2dSMatan Barak * @filter: Should we call the callback? 94703db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 94803db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 94903db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 95003db3a2dSMatan Barak * 95103db3a2dSMatan Barak * Enumerates all of the physical RoCE ports of ib_dev 95203db3a2dSMatan Barak * which are related to netdevice and calls callback() on each 95303db3a2dSMatan Barak * device for which filter() function returns non zero. 95403db3a2dSMatan Barak */ 95503db3a2dSMatan Barak void ib_enum_roce_netdev(struct ib_device *ib_dev, 95603db3a2dSMatan Barak roce_netdev_filter filter, 95703db3a2dSMatan Barak void *filter_cookie, 95803db3a2dSMatan Barak roce_netdev_callback cb, 95903db3a2dSMatan Barak void *cookie) 96003db3a2dSMatan Barak { 96103db3a2dSMatan Barak u8 port; 96203db3a2dSMatan Barak 96303db3a2dSMatan Barak for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); 96403db3a2dSMatan Barak port++) 96503db3a2dSMatan Barak if (rdma_protocol_roce(ib_dev, port)) { 96603db3a2dSMatan Barak struct net_device *idev = NULL; 96703db3a2dSMatan Barak 968*3023a1e9SKamal Heib if (ib_dev->ops.get_netdev) 969*3023a1e9SKamal Heib idev = ib_dev->ops.get_netdev(ib_dev, port); 97003db3a2dSMatan Barak 97103db3a2dSMatan Barak if (idev && 97203db3a2dSMatan Barak idev->reg_state >= NETREG_UNREGISTERED) { 97303db3a2dSMatan Barak dev_put(idev); 97403db3a2dSMatan Barak idev = NULL; 97503db3a2dSMatan Barak } 97603db3a2dSMatan Barak 97703db3a2dSMatan Barak if (filter(ib_dev, port, idev, filter_cookie)) 97803db3a2dSMatan Barak cb(ib_dev, port, idev, cookie); 97903db3a2dSMatan Barak 98003db3a2dSMatan Barak if (idev) 98103db3a2dSMatan Barak dev_put(idev); 98203db3a2dSMatan Barak } 98303db3a2dSMatan Barak } 98403db3a2dSMatan Barak 98503db3a2dSMatan Barak /** 98603db3a2dSMatan Barak * ib_enum_all_roce_netdevs - enumerate all RoCE devices 98703db3a2dSMatan Barak * @filter: Should we call the callback? 98803db3a2dSMatan Barak * @filter_cookie: Cookie passed to filter 98903db3a2dSMatan Barak * @cb: Callback to call for each found RoCE ports 99003db3a2dSMatan Barak * @cookie: Cookie passed back to the callback 99103db3a2dSMatan Barak * 99203db3a2dSMatan Barak * Enumerates all RoCE devices' physical ports which are related 99303db3a2dSMatan Barak * to netdevices and calls callback() on each device for which 99403db3a2dSMatan Barak * filter() function returns non zero. 99503db3a2dSMatan Barak */ 99603db3a2dSMatan Barak void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 99703db3a2dSMatan Barak void *filter_cookie, 99803db3a2dSMatan Barak roce_netdev_callback cb, 99903db3a2dSMatan Barak void *cookie) 100003db3a2dSMatan Barak { 100103db3a2dSMatan Barak struct ib_device *dev; 100203db3a2dSMatan Barak 100303db3a2dSMatan Barak down_read(&lists_rwsem); 100403db3a2dSMatan Barak list_for_each_entry(dev, &device_list, core_list) 100503db3a2dSMatan Barak ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); 100603db3a2dSMatan Barak up_read(&lists_rwsem); 100703db3a2dSMatan Barak } 100803db3a2dSMatan Barak 100903db3a2dSMatan Barak /** 10108030c835SLeon Romanovsky * ib_enum_all_devs - enumerate all ib_devices 10118030c835SLeon Romanovsky * @cb: Callback to call for each found ib_device 10128030c835SLeon Romanovsky * 10138030c835SLeon Romanovsky * Enumerates all ib_devices and calls callback() on each device. 10148030c835SLeon Romanovsky */ 10158030c835SLeon Romanovsky int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 10168030c835SLeon Romanovsky struct netlink_callback *cb) 10178030c835SLeon Romanovsky { 10188030c835SLeon Romanovsky struct ib_device *dev; 10198030c835SLeon Romanovsky unsigned int idx = 0; 10208030c835SLeon Romanovsky int ret = 0; 10218030c835SLeon Romanovsky 10228030c835SLeon Romanovsky down_read(&lists_rwsem); 10238030c835SLeon Romanovsky list_for_each_entry(dev, &device_list, core_list) { 10248030c835SLeon Romanovsky ret = nldev_cb(dev, skb, cb, idx); 10258030c835SLeon Romanovsky if (ret) 10268030c835SLeon Romanovsky break; 10278030c835SLeon Romanovsky idx++; 10288030c835SLeon Romanovsky } 10298030c835SLeon Romanovsky 10308030c835SLeon Romanovsky up_read(&lists_rwsem); 10318030c835SLeon Romanovsky return ret; 10328030c835SLeon Romanovsky } 10338030c835SLeon Romanovsky 10348030c835SLeon Romanovsky /** 10351da177e4SLinus Torvalds * ib_query_pkey - Get P_Key table entry 10361da177e4SLinus Torvalds * @device:Device to query 10371da177e4SLinus Torvalds * @port_num:Port number to query 10381da177e4SLinus Torvalds * @index:P_Key table index to query 10391da177e4SLinus Torvalds * @pkey:Returned P_Key 10401da177e4SLinus Torvalds * 10411da177e4SLinus Torvalds * ib_query_pkey() fetches the specified P_Key table entry. 10421da177e4SLinus Torvalds */ 10431da177e4SLinus Torvalds int ib_query_pkey(struct ib_device *device, 10441da177e4SLinus Torvalds u8 port_num, u16 index, u16 *pkey) 10451da177e4SLinus Torvalds { 10469af3f5cfSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 10479af3f5cfSYuval Shaia return -EINVAL; 10489af3f5cfSYuval Shaia 1049*3023a1e9SKamal Heib return device->ops.query_pkey(device, port_num, index, pkey); 10501da177e4SLinus Torvalds } 10511da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_pkey); 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds /** 10541da177e4SLinus Torvalds * ib_modify_device - Change IB device attributes 10551da177e4SLinus Torvalds * @device:Device to modify 10561da177e4SLinus Torvalds * @device_modify_mask:Mask of attributes to change 10571da177e4SLinus Torvalds * @device_modify:New attribute values 10581da177e4SLinus Torvalds * 10591da177e4SLinus Torvalds * ib_modify_device() changes a device's attributes as specified by 10601da177e4SLinus Torvalds * the @device_modify_mask and @device_modify structure. 10611da177e4SLinus Torvalds */ 10621da177e4SLinus Torvalds int ib_modify_device(struct ib_device *device, 10631da177e4SLinus Torvalds int device_modify_mask, 10641da177e4SLinus Torvalds struct ib_device_modify *device_modify) 10651da177e4SLinus Torvalds { 1066*3023a1e9SKamal Heib if (!device->ops.modify_device) 106710e1b54bSBart Van Assche return -ENOSYS; 106810e1b54bSBart Van Assche 1069*3023a1e9SKamal Heib return device->ops.modify_device(device, device_modify_mask, 10701da177e4SLinus Torvalds device_modify); 10711da177e4SLinus Torvalds } 10721da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_device); 10731da177e4SLinus Torvalds 10741da177e4SLinus Torvalds /** 10751da177e4SLinus Torvalds * ib_modify_port - Modifies the attributes for the specified port. 10761da177e4SLinus Torvalds * @device: The device to modify. 10771da177e4SLinus Torvalds * @port_num: The number of the port to modify. 10781da177e4SLinus Torvalds * @port_modify_mask: Mask used to specify which attributes of the port 10791da177e4SLinus Torvalds * to change. 10801da177e4SLinus Torvalds * @port_modify: New attribute values for the port. 10811da177e4SLinus Torvalds * 10821da177e4SLinus Torvalds * ib_modify_port() changes a port's attributes as specified by the 10831da177e4SLinus Torvalds * @port_modify_mask and @port_modify structure. 10841da177e4SLinus Torvalds */ 10851da177e4SLinus Torvalds int ib_modify_port(struct ib_device *device, 10861da177e4SLinus Torvalds u8 port_num, int port_modify_mask, 10871da177e4SLinus Torvalds struct ib_port_modify *port_modify) 10881da177e4SLinus Torvalds { 108961e0962dSSelvin Xavier int rc; 109010e1b54bSBart Van Assche 109124dc831bSYuval Shaia if (!rdma_is_port_valid(device, port_num)) 1092116c0074SRoland Dreier return -EINVAL; 1093116c0074SRoland Dreier 1094*3023a1e9SKamal Heib if (device->ops.modify_port) 1095*3023a1e9SKamal Heib rc = device->ops.modify_port(device, port_num, 1096*3023a1e9SKamal Heib port_modify_mask, 10971da177e4SLinus Torvalds port_modify); 109861e0962dSSelvin Xavier else 109961e0962dSSelvin Xavier rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; 110061e0962dSSelvin Xavier return rc; 11011da177e4SLinus Torvalds } 11021da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_port); 11031da177e4SLinus Torvalds 11045eb620c8SYosef Etigin /** 11055eb620c8SYosef Etigin * ib_find_gid - Returns the port number and GID table index where 1106dbb12562SParav Pandit * a specified GID value occurs. Its searches only for IB link layer. 11075eb620c8SYosef Etigin * @device: The device to query. 11085eb620c8SYosef Etigin * @gid: The GID value to search for. 11095eb620c8SYosef Etigin * @port_num: The port number of the device where the GID value was found. 11105eb620c8SYosef Etigin * @index: The index into the GID table where the GID was found. This 11115eb620c8SYosef Etigin * parameter may be NULL. 11125eb620c8SYosef Etigin */ 11135eb620c8SYosef Etigin int ib_find_gid(struct ib_device *device, union ib_gid *gid, 1114b26c4a11SParav Pandit u8 *port_num, u16 *index) 11155eb620c8SYosef Etigin { 11165eb620c8SYosef Etigin union ib_gid tmp_gid; 11175eb620c8SYosef Etigin int ret, port, i; 11185eb620c8SYosef Etigin 11190cf18d77SIra Weiny for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { 112022d24f75SParav Pandit if (!rdma_protocol_ib(device, port)) 1121b39ffa1dSMatan Barak continue; 1122b39ffa1dSMatan Barak 11237738613eSIra Weiny for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { 11241dfce294SParav Pandit ret = rdma_query_gid(device, port, i, &tmp_gid); 11255eb620c8SYosef Etigin if (ret) 11265eb620c8SYosef Etigin return ret; 11275eb620c8SYosef Etigin if (!memcmp(&tmp_gid, gid, sizeof *gid)) { 11285eb620c8SYosef Etigin *port_num = port; 11295eb620c8SYosef Etigin if (index) 11305eb620c8SYosef Etigin *index = i; 11315eb620c8SYosef Etigin return 0; 11325eb620c8SYosef Etigin } 11335eb620c8SYosef Etigin } 11345eb620c8SYosef Etigin } 11355eb620c8SYosef Etigin 11365eb620c8SYosef Etigin return -ENOENT; 11375eb620c8SYosef Etigin } 11385eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_gid); 11395eb620c8SYosef Etigin 11405eb620c8SYosef Etigin /** 11415eb620c8SYosef Etigin * ib_find_pkey - Returns the PKey table index where a specified 11425eb620c8SYosef Etigin * PKey value occurs. 11435eb620c8SYosef Etigin * @device: The device to query. 11445eb620c8SYosef Etigin * @port_num: The port number of the device to search for the PKey. 11455eb620c8SYosef Etigin * @pkey: The PKey value to search for. 11465eb620c8SYosef Etigin * @index: The index into the PKey table where the PKey was found. 11475eb620c8SYosef Etigin */ 11485eb620c8SYosef Etigin int ib_find_pkey(struct ib_device *device, 11495eb620c8SYosef Etigin u8 port_num, u16 pkey, u16 *index) 11505eb620c8SYosef Etigin { 11515eb620c8SYosef Etigin int ret, i; 11525eb620c8SYosef Etigin u16 tmp_pkey; 1153ff7166c4SJack Morgenstein int partial_ix = -1; 11545eb620c8SYosef Etigin 11557738613eSIra Weiny for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { 11565eb620c8SYosef Etigin ret = ib_query_pkey(device, port_num, i, &tmp_pkey); 11575eb620c8SYosef Etigin if (ret) 11585eb620c8SYosef Etigin return ret; 115936026eccSMoni Shoua if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { 1160ff7166c4SJack Morgenstein /* if there is full-member pkey take it.*/ 1161ff7166c4SJack Morgenstein if (tmp_pkey & 0x8000) { 11625eb620c8SYosef Etigin *index = i; 11635eb620c8SYosef Etigin return 0; 11645eb620c8SYosef Etigin } 1165ff7166c4SJack Morgenstein if (partial_ix < 0) 1166ff7166c4SJack Morgenstein partial_ix = i; 1167ff7166c4SJack Morgenstein } 11685eb620c8SYosef Etigin } 11695eb620c8SYosef Etigin 1170ff7166c4SJack Morgenstein /*no full-member, if exists take the limited*/ 1171ff7166c4SJack Morgenstein if (partial_ix >= 0) { 1172ff7166c4SJack Morgenstein *index = partial_ix; 1173ff7166c4SJack Morgenstein return 0; 1174ff7166c4SJack Morgenstein } 11755eb620c8SYosef Etigin return -ENOENT; 11765eb620c8SYosef Etigin } 11775eb620c8SYosef Etigin EXPORT_SYMBOL(ib_find_pkey); 11785eb620c8SYosef Etigin 11799268f72dSYotam Kenneth /** 11809268f72dSYotam Kenneth * ib_get_net_dev_by_params() - Return the appropriate net_dev 11819268f72dSYotam Kenneth * for a received CM request 11829268f72dSYotam Kenneth * @dev: An RDMA device on which the request has been received. 11839268f72dSYotam Kenneth * @port: Port number on the RDMA device. 11849268f72dSYotam Kenneth * @pkey: The Pkey the request came on. 11859268f72dSYotam Kenneth * @gid: A GID that the net_dev uses to communicate. 11869268f72dSYotam Kenneth * @addr: Contains the IP address that the request specified as its 11879268f72dSYotam Kenneth * destination. 11889268f72dSYotam Kenneth */ 11899268f72dSYotam Kenneth struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, 11909268f72dSYotam Kenneth u8 port, 11919268f72dSYotam Kenneth u16 pkey, 11929268f72dSYotam Kenneth const union ib_gid *gid, 11939268f72dSYotam Kenneth const struct sockaddr *addr) 11949268f72dSYotam Kenneth { 11959268f72dSYotam Kenneth struct net_device *net_dev = NULL; 11969268f72dSYotam Kenneth struct ib_client_data *context; 11979268f72dSYotam Kenneth 11989268f72dSYotam Kenneth if (!rdma_protocol_ib(dev, port)) 11999268f72dSYotam Kenneth return NULL; 12009268f72dSYotam Kenneth 12019268f72dSYotam Kenneth down_read(&lists_rwsem); 12029268f72dSYotam Kenneth 12039268f72dSYotam Kenneth list_for_each_entry(context, &dev->client_data_list, list) { 12049268f72dSYotam Kenneth struct ib_client *client = context->client; 12059268f72dSYotam Kenneth 12069268f72dSYotam Kenneth if (context->going_down) 12079268f72dSYotam Kenneth continue; 12089268f72dSYotam Kenneth 12099268f72dSYotam Kenneth if (client->get_net_dev_by_params) { 12109268f72dSYotam Kenneth net_dev = client->get_net_dev_by_params(dev, port, pkey, 12119268f72dSYotam Kenneth gid, addr, 12129268f72dSYotam Kenneth context->data); 12139268f72dSYotam Kenneth if (net_dev) 12149268f72dSYotam Kenneth break; 12159268f72dSYotam Kenneth } 12169268f72dSYotam Kenneth } 12179268f72dSYotam Kenneth 12189268f72dSYotam Kenneth up_read(&lists_rwsem); 12199268f72dSYotam Kenneth 12209268f72dSYotam Kenneth return net_dev; 12219268f72dSYotam Kenneth } 12229268f72dSYotam Kenneth EXPORT_SYMBOL(ib_get_net_dev_by_params); 12239268f72dSYotam Kenneth 1224521ed0d9SKamal Heib void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) 1225521ed0d9SKamal Heib { 1226*3023a1e9SKamal Heib struct ib_device_ops *dev_ops = &dev->ops; 1227521ed0d9SKamal Heib #define SET_DEVICE_OP(ptr, name) \ 1228521ed0d9SKamal Heib do { \ 1229521ed0d9SKamal Heib if (ops->name) \ 1230521ed0d9SKamal Heib if (!((ptr)->name)) \ 1231521ed0d9SKamal Heib (ptr)->name = ops->name; \ 1232521ed0d9SKamal Heib } while (0) 1233521ed0d9SKamal Heib 1234*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, add_gid); 1235*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_dm); 1236*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_fmr); 1237*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_hw_stats); 1238*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_mr); 1239*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_mw); 1240*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_pd); 1241*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_rdma_netdev); 1242*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_ucontext); 1243*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, alloc_xrcd); 1244*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, attach_mcast); 1245*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, check_mr_status); 1246*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_ah); 1247*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_counters); 1248*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_cq); 1249*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_flow); 1250*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_flow_action_esp); 1251*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_qp); 1252*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_rwq_ind_table); 1253*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_srq); 1254*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, create_wq); 1255*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_dm); 1256*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_fmr); 1257*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_mw); 1258*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_pd); 1259*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_ucontext); 1260*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dealloc_xrcd); 1261*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, del_gid); 1262*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, dereg_mr); 1263*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_ah); 1264*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_counters); 1265*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_cq); 1266*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_flow); 1267*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_flow_action); 1268*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_qp); 1269*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_rwq_ind_table); 1270*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_srq); 1271*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, destroy_wq); 1272*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, detach_mcast); 1273*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, disassociate_ucontext); 1274*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, drain_rq); 1275*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, drain_sq); 1276*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_dev_fw_str); 1277*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_dma_mr); 1278*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_hw_stats); 1279*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_link_layer); 1280*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_netdev); 1281*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_port_immutable); 1282*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_vector_affinity); 1283*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_vf_config); 1284*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, get_vf_stats); 1285*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, map_mr_sg); 1286*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, map_phys_fmr); 1287*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, mmap); 1288*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_ah); 1289*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_cq); 1290*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_device); 1291*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_flow_action_esp); 1292*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_port); 1293*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_qp); 1294*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_srq); 1295*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, modify_wq); 1296*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, peek_cq); 1297*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, poll_cq); 1298*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, post_recv); 1299*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, post_send); 1300*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, post_srq_recv); 1301*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, process_mad); 1302*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_ah); 1303*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_device); 1304*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_gid); 1305*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_pkey); 1306*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_port); 1307*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_qp); 1308*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, query_srq); 1309*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, rdma_netdev_get_params); 1310*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, read_counters); 1311*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, reg_dm_mr); 1312*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, reg_user_mr); 1313*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, req_ncomp_notif); 1314*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, req_notify_cq); 1315*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, rereg_user_mr); 1316*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, resize_cq); 1317*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, set_vf_guid); 1318*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, set_vf_link_state); 1319*3023a1e9SKamal Heib SET_DEVICE_OP(dev_ops, unmap_fmr); 1320521ed0d9SKamal Heib } 1321521ed0d9SKamal Heib EXPORT_SYMBOL(ib_set_device_ops); 1322521ed0d9SKamal Heib 1323d0e312feSLeon Romanovsky static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { 1324735c631aSMark Bloch [RDMA_NL_LS_OP_RESOLVE] = { 1325647c75acSLeon Romanovsky .doit = ib_nl_handle_resolve_resp, 1326e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1327e3a2b93dSLeon Romanovsky }, 1328735c631aSMark Bloch [RDMA_NL_LS_OP_SET_TIMEOUT] = { 1329647c75acSLeon Romanovsky .doit = ib_nl_handle_set_timeout, 1330e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1331e3a2b93dSLeon Romanovsky }, 1332ae43f828SMark Bloch [RDMA_NL_LS_OP_IP_RESOLVE] = { 1333647c75acSLeon Romanovsky .doit = ib_nl_handle_ip_res_resp, 1334e3a2b93dSLeon Romanovsky .flags = RDMA_NL_ADMIN_PERM, 1335e3a2b93dSLeon Romanovsky }, 1336735c631aSMark Bloch }; 1337735c631aSMark Bloch 13381da177e4SLinus Torvalds static int __init ib_core_init(void) 13391da177e4SLinus Torvalds { 13401da177e4SLinus Torvalds int ret; 13411da177e4SLinus Torvalds 1342f0626710STejun Heo ib_wq = alloc_workqueue("infiniband", 0, 0); 1343f0626710STejun Heo if (!ib_wq) 1344f0626710STejun Heo return -ENOMEM; 1345f0626710STejun Heo 134614d3a3b2SChristoph Hellwig ib_comp_wq = alloc_workqueue("ib-comp-wq", 1347b7363e67SSagi Grimberg WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); 134814d3a3b2SChristoph Hellwig if (!ib_comp_wq) { 134914d3a3b2SChristoph Hellwig ret = -ENOMEM; 135014d3a3b2SChristoph Hellwig goto err; 135114d3a3b2SChristoph Hellwig } 135214d3a3b2SChristoph Hellwig 1353f794809aSJack Morgenstein ib_comp_unbound_wq = 1354f794809aSJack Morgenstein alloc_workqueue("ib-comp-unb-wq", 1355f794809aSJack Morgenstein WQ_UNBOUND | WQ_HIGHPRI | WQ_MEM_RECLAIM | 1356f794809aSJack Morgenstein WQ_SYSFS, WQ_UNBOUND_MAX_ACTIVE); 1357f794809aSJack Morgenstein if (!ib_comp_unbound_wq) { 1358f794809aSJack Morgenstein ret = -ENOMEM; 1359f794809aSJack Morgenstein goto err_comp; 1360f794809aSJack Morgenstein } 1361f794809aSJack Morgenstein 136255aeed06SJason Gunthorpe ret = class_register(&ib_class); 1363fd75c789SNir Muchtar if (ret) { 1364aba25a3eSParav Pandit pr_warn("Couldn't create InfiniBand device class\n"); 1365f794809aSJack Morgenstein goto err_comp_unbound; 1366fd75c789SNir Muchtar } 13671da177e4SLinus Torvalds 1368c9901724SLeon Romanovsky ret = rdma_nl_init(); 13691da177e4SLinus Torvalds if (ret) { 1370c9901724SLeon Romanovsky pr_warn("Couldn't init IB netlink interface: err %d\n", ret); 1371fd75c789SNir Muchtar goto err_sysfs; 13721da177e4SLinus Torvalds } 13731da177e4SLinus Torvalds 1374e3f20f02SLeon Romanovsky ret = addr_init(); 1375e3f20f02SLeon Romanovsky if (ret) { 1376e3f20f02SLeon Romanovsky pr_warn("Could't init IB address resolution\n"); 1377e3f20f02SLeon Romanovsky goto err_ibnl; 1378e3f20f02SLeon Romanovsky } 1379e3f20f02SLeon Romanovsky 13804c2cb422SMark Bloch ret = ib_mad_init(); 13814c2cb422SMark Bloch if (ret) { 13824c2cb422SMark Bloch pr_warn("Couldn't init IB MAD\n"); 13834c2cb422SMark Bloch goto err_addr; 13844c2cb422SMark Bloch } 13854c2cb422SMark Bloch 1386c2e49c92SMark Bloch ret = ib_sa_init(); 1387c2e49c92SMark Bloch if (ret) { 1388c2e49c92SMark Bloch pr_warn("Couldn't init SA\n"); 1389c2e49c92SMark Bloch goto err_mad; 1390c2e49c92SMark Bloch } 1391c2e49c92SMark Bloch 13928f408ab6SDaniel Jurgens ret = register_lsm_notifier(&ibdev_lsm_nb); 13938f408ab6SDaniel Jurgens if (ret) { 13948f408ab6SDaniel Jurgens pr_warn("Couldn't register LSM notifier. ret %d\n", ret); 1395c9901724SLeon Romanovsky goto err_sa; 13968f408ab6SDaniel Jurgens } 13978f408ab6SDaniel Jurgens 13986c80b41aSLeon Romanovsky nldev_init(); 1399c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); 14005ef8c0c1SJason Gunthorpe roce_gid_mgmt_init(); 1401b2cbae2cSRoland Dreier 1402fd75c789SNir Muchtar return 0; 1403fd75c789SNir Muchtar 1404735c631aSMark Bloch err_sa: 1405735c631aSMark Bloch ib_sa_cleanup(); 1406c2e49c92SMark Bloch err_mad: 1407c2e49c92SMark Bloch ib_mad_cleanup(); 14084c2cb422SMark Bloch err_addr: 14094c2cb422SMark Bloch addr_cleanup(); 1410e3f20f02SLeon Romanovsky err_ibnl: 1411c9901724SLeon Romanovsky rdma_nl_exit(); 1412fd75c789SNir Muchtar err_sysfs: 141355aeed06SJason Gunthorpe class_unregister(&ib_class); 1414f794809aSJack Morgenstein err_comp_unbound: 1415f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 141614d3a3b2SChristoph Hellwig err_comp: 141714d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1418fd75c789SNir Muchtar err: 1419fd75c789SNir Muchtar destroy_workqueue(ib_wq); 14201da177e4SLinus Torvalds return ret; 14211da177e4SLinus Torvalds } 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds static void __exit ib_core_cleanup(void) 14241da177e4SLinus Torvalds { 14255ef8c0c1SJason Gunthorpe roce_gid_mgmt_cleanup(); 14266c80b41aSLeon Romanovsky nldev_exit(); 1427c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_LS); 1428c9901724SLeon Romanovsky unregister_lsm_notifier(&ibdev_lsm_nb); 1429c2e49c92SMark Bloch ib_sa_cleanup(); 14304c2cb422SMark Bloch ib_mad_cleanup(); 1431e3f20f02SLeon Romanovsky addr_cleanup(); 1432c9901724SLeon Romanovsky rdma_nl_exit(); 143355aeed06SJason Gunthorpe class_unregister(&ib_class); 1434f794809aSJack Morgenstein destroy_workqueue(ib_comp_unbound_wq); 143514d3a3b2SChristoph Hellwig destroy_workqueue(ib_comp_wq); 1436f7c6a7b5SRoland Dreier /* Make sure that any pending umem accounting work is done. */ 1437f0626710STejun Heo destroy_workqueue(ib_wq); 14381da177e4SLinus Torvalds } 14391da177e4SLinus Torvalds 1440e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); 1441e3bf14bdSJason Gunthorpe 1442a9cd1a67SDmitry Monakhov subsys_initcall(ib_core_init); 14431da177e4SLinus Torvalds module_exit(ib_core_cleanup); 1444