LXR linux/drivers/infiniband/core/cma

   1/*
   2 * Copyright (c) 2005 Voltaire Inc.  All rights reserved.
   3 * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
   4 * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved.
   5 * Copyright (c) 2005-2006 Intel Corporation.  All rights reserved.
   6 *
   7 * This software is available to you under a choice of one of two
   8 * licenses.  You may choose to be licensed under the terms of the GNU
   9 * General Public License (GPL) Version 2, available from the file
  10 * COPYING in the main directory of this source tree, or the
  11 * OpenIB.org BSD license below:
  12 *
  13 *     Redistribution and use in source and binary forms, with or
  14 *     without modification, are permitted provided that the following
  15 *     conditions are met:
  16 *
  17 *      - Redistributions of source code must retain the above
  18 *        copyright notice, this list of conditions and the following
  19 *        disclaimer.
  20 *
  21 *      - Redistributions in binary form must reproduce the above
  22 *        copyright notice, this list of conditions and the following
  23 *        disclaimer in the documentation and/or other materials
  24 *        provided with the distribution.
  25 *
  26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  33 * SOFTWARE.
  34 */
  35
  36#ifndef _CMA_PRIV_H
  37#define _CMA_PRIV_H
  38
  39enum rdma_cm_state {
  40        RDMA_CM_IDLE,
  41        RDMA_CM_ADDR_QUERY,
  42        RDMA_CM_ADDR_RESOLVED,
  43        RDMA_CM_ROUTE_QUERY,
  44        RDMA_CM_ROUTE_RESOLVED,
  45        RDMA_CM_CONNECT,
  46        RDMA_CM_DISCONNECT,
  47        RDMA_CM_ADDR_BOUND,
  48        RDMA_CM_LISTEN,
  49        RDMA_CM_DEVICE_REMOVAL,
  50        RDMA_CM_DESTROYING
  51};
  52
  53struct rdma_id_private {
  54        struct rdma_cm_id       id;
  55
  56        struct rdma_bind_list   *bind_list;
  57        struct hlist_node       node;
  58        struct list_head        list; /* listen_any_list or cma_device.list */
  59        struct list_head        listen_list; /* per device listens */
  60        struct cma_device       *cma_dev;
  61        struct list_head        mc_list;
  62
  63        int                     internal_id;
  64        enum rdma_cm_state      state;
  65        spinlock_t              lock;
  66        struct mutex            qp_mutex;
  67
  68        struct completion       comp;
  69        refcount_t refcount;
  70        struct mutex            handler_mutex;
  71
  72        int                     backlog;
  73        int                     timeout_ms;
  74        struct ib_sa_query      *query;
  75        int                     query_id;
  76        union {
  77                struct ib_cm_id *ib;
  78                struct iw_cm_id *iw;
  79        } cm_id;
  80
  81        u32                     seq_num;
  82        u32                     qkey;
  83        u32                     qp_num;
  84        u32                     options;
  85        u8                      srq;
  86        u8                      tos;
  87        u8                      tos_set:1;
  88        u8                      timeout_set:1;
  89        u8                      min_rnr_timer_set:1;
  90        u8                      reuseaddr;
  91        u8                      afonly;
  92        u8                      timeout;
  93        u8                      min_rnr_timer;
  94        u8 used_resolve_ip;
  95        enum ib_gid_type        gid_type;
  96
  97        /*
  98         * Internal to RDMA/core, don't use in the drivers
  99         */
 100        struct rdma_restrack_entry     res;
 101        struct rdma_ucm_ece ece;
 102};
 103
 104#if IS_ENABLED(CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS)
 105int cma_configfs_init(void);
 106void cma_configfs_exit(void);
 107#else
 108static inline int cma_configfs_init(void)
 109{
 110        return 0;
 111}
 112
 113static inline void cma_configfs_exit(void)
 114{
 115}
 116#endif
 117
 118void cma_dev_get(struct cma_device *dev);
 119void cma_dev_put(struct cma_device *dev);
 120typedef bool (*cma_device_filter)(struct ib_device *, void *);
 121struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter,
 122                                             void *cookie);
 123int cma_get_default_gid_type(struct cma_device *dev, u32 port);
 124int cma_set_default_gid_type(struct cma_device *dev, u32 port,
 125                             enum ib_gid_type default_gid_type);
 126int cma_get_default_roce_tos(struct cma_device *dev, u32 port);
 127int cma_set_default_roce_tos(struct cma_device *dev, u32 port,
 128                             u8 default_roce_tos);
 129struct ib_device *cma_get_ib_dev(struct cma_device *dev);
 130
 131#endif /* _CMA_PRIV_H */
 132