LXR linux/drivers/infiniband/core/core

   1/*
   2 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32
  33#ifndef _CORE_PRIV_H
  34#define _CORE_PRIV_H
  35
  36#include <linux/list.h>
  37#include <linux/spinlock.h>
  38#include <linux/cgroup_rdma.h>
  39
  40#include <rdma/ib_verbs.h>
  41#include <rdma/opa_addr.h>
  42#include <rdma/ib_mad.h>
  43#include <rdma/restrack.h>
  44#include "mad_priv.h"
  45
  46/* Total number of ports combined across all struct ib_devices's */
  47#define RDMA_MAX_PORTS 8192
  48
  49struct pkey_index_qp_list {
  50        struct list_head    pkey_index_list;
  51        u16                 pkey_index;
  52        /* Lock to hold while iterating the qp_list. */
  53        spinlock_t          qp_list_lock;
  54        struct list_head    qp_list;
  55};
  56
  57extern const struct attribute_group ib_dev_attr_group;
  58extern bool ib_devices_shared_netns;
  59
  60int ib_device_register_sysfs(struct ib_device *device);
  61void ib_device_unregister_sysfs(struct ib_device *device);
  62int ib_device_rename(struct ib_device *ibdev, const char *name);
  63int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  64
  65typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  66              struct net_device *idev, void *cookie);
  67
  68typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  69                                   struct net_device *idev, void *cookie);
  70
  71struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  72                                        unsigned int port);
  73
  74void ib_enum_roce_netdev(struct ib_device *ib_dev,
  75                         roce_netdev_filter filter,
  76                         void *filter_cookie,
  77                         roce_netdev_callback cb,
  78                         void *cookie);
  79void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
  80                              void *filter_cookie,
  81                              roce_netdev_callback cb,
  82                              void *cookie);
  83
  84typedef int (*nldev_callback)(struct ib_device *device,
  85                              struct sk_buff *skb,
  86                              struct netlink_callback *cb,
  87                              unsigned int idx);
  88
  89int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
  90                     struct netlink_callback *cb);
  91
  92struct ib_client_nl_info {
  93        struct sk_buff *nl_msg;
  94        struct device *cdev;
  95        unsigned int port;
  96        u64 abi;
  97};
  98int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
  99                          struct ib_client_nl_info *res);
 100
 101enum ib_cache_gid_default_mode {
 102        IB_CACHE_GID_DEFAULT_MODE_SET,
 103        IB_CACHE_GID_DEFAULT_MODE_DELETE
 104};
 105
 106int ib_cache_gid_parse_type_str(const char *buf);
 107
 108const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 109
 110void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 111                                  struct net_device *ndev,
 112                                  unsigned long gid_type_mask,
 113                                  enum ib_cache_gid_default_mode mode);
 114
 115int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 116                     union ib_gid *gid, struct ib_gid_attr *attr);
 117
 118int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 119                     union ib_gid *gid, struct ib_gid_attr *attr);
 120
 121int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 122                                     struct net_device *ndev);
 123
 124int roce_gid_mgmt_init(void);
 125void roce_gid_mgmt_cleanup(void);
 126
 127unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 128
 129int ib_cache_setup_one(struct ib_device *device);
 130void ib_cache_cleanup_one(struct ib_device *device);
 131void ib_cache_release_one(struct ib_device *device);
 132void ib_dispatch_event_clients(struct ib_event *event);
 133
 134#ifdef CONFIG_CGROUP_RDMA
 135void ib_device_register_rdmacg(struct ib_device *device);
 136void ib_device_unregister_rdmacg(struct ib_device *device);
 137
 138int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 139                         struct ib_device *device,
 140                         enum rdmacg_resource_type resource_index);
 141
 142void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 143                        struct ib_device *device,
 144                        enum rdmacg_resource_type resource_index);
 145#else
 146static inline void ib_device_register_rdmacg(struct ib_device *device)
 147{
 148}
 149
 150static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 151{
 152}
 153
 154static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 155                                       struct ib_device *device,
 156                                       enum rdmacg_resource_type resource_index)
 157{
 158        return 0;
 159}
 160
 161static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 162                                      struct ib_device *device,
 163                                      enum rdmacg_resource_type resource_index)
 164{
 165}
 166#endif
 167
 168static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 169                                         struct net_device *upper)
 170{
 171        return netdev_has_upper_dev_all_rcu(dev, upper);
 172}
 173
 174int addr_init(void);
 175void addr_cleanup(void);
 176
 177int ib_mad_init(void);
 178void ib_mad_cleanup(void);
 179
 180int ib_sa_init(void);
 181void ib_sa_cleanup(void);
 182
 183int rdma_nl_init(void);
 184void rdma_nl_exit(void);
 185
 186int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 187                              struct nlmsghdr *nlh,
 188                              struct netlink_ext_ack *extack);
 189int ib_nl_handle_set_timeout(struct sk_buff *skb,
 190                             struct nlmsghdr *nlh,
 191                             struct netlink_ext_ack *extack);
 192int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 193                             struct nlmsghdr *nlh,
 194                             struct netlink_ext_ack *extack);
 195
 196int ib_get_cached_subnet_prefix(struct ib_device *device,
 197                                u8                port_num,
 198                                u64              *sn_pfx);
 199
 200#ifdef CONFIG_SECURITY_INFINIBAND
 201void ib_security_release_port_pkey_list(struct ib_device *device);
 202
 203void ib_security_cache_change(struct ib_device *device,
 204                              u8 port_num,
 205                              u64 subnet_prefix);
 206
 207int ib_security_modify_qp(struct ib_qp *qp,
 208                          struct ib_qp_attr *qp_attr,
 209                          int qp_attr_mask,
 210                          struct ib_udata *udata);
 211
 212int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 213void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 214void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 215void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 216int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 217void ib_close_shared_qp_security(struct ib_qp_security *sec);
 218int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 219                                enum ib_qp_type qp_type);
 220void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 221int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 222void ib_mad_agent_security_change(void);
 223#else
 224static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 225{
 226}
 227
 228static inline void ib_security_cache_change(struct ib_device *device,
 229                                            u8 port_num,
 230                                            u64 subnet_prefix)
 231{
 232}
 233
 234static inline int ib_security_modify_qp(struct ib_qp *qp,
 235                                        struct ib_qp_attr *qp_attr,
 236                                        int qp_attr_mask,
 237                                        struct ib_udata *udata)
 238{
 239        return qp->device->ops.modify_qp(qp->real_qp,
 240                                         qp_attr,
 241                                         qp_attr_mask,
 242                                         udata);
 243}
 244
 245static inline int ib_create_qp_security(struct ib_qp *qp,
 246                                        struct ib_device *dev)
 247{
 248        return 0;
 249}
 250
 251static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 252{
 253}
 254
 255static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 256{
 257}
 258
 259static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 260{
 261}
 262
 263static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 264                                             struct ib_device *dev)
 265{
 266        return 0;
 267}
 268
 269static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 270{
 271}
 272
 273static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 274                                              enum ib_qp_type qp_type)
 275{
 276        return 0;
 277}
 278
 279static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 280{
 281}
 282
 283static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 284                                          u16 pkey_index)
 285{
 286        return 0;
 287}
 288
 289static inline void ib_mad_agent_security_change(void)
 290{
 291}
 292#endif
 293
 294struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 295
 296/* RDMA device netlink */
 297void nldev_init(void);
 298void nldev_exit(void);
 299
 300static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 301                                          struct ib_pd *pd,
 302                                          struct ib_qp_init_attr *attr,
 303                                          struct ib_udata *udata,
 304                                          struct ib_uobject *uobj)
 305{
 306        enum ib_qp_type qp_type = attr->qp_type;
 307        struct ib_qp *qp;
 308        bool is_xrc;
 309
 310        if (!dev->ops.create_qp)
 311                return ERR_PTR(-EOPNOTSUPP);
 312
 313        qp = dev->ops.create_qp(pd, attr, udata);
 314        if (IS_ERR(qp))
 315                return qp;
 316
 317        qp->device = dev;
 318        qp->pd = pd;
 319        qp->uobject = uobj;
 320        qp->real_qp = qp;
 321        /*
 322         * We don't track XRC QPs for now, because they don't have PD
 323         * and more importantly they are created internaly by driver,
 324         * see mlx5 create_dev_resources() as an example.
 325         */
 326        is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT;
 327        if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) {
 328                qp->res.type = RDMA_RESTRACK_QP;
 329                if (uobj)
 330                        rdma_restrack_uadd(&qp->res);
 331                else
 332                        rdma_restrack_kadd(&qp->res);
 333        } else
 334                qp->res.valid = false;
 335
 336        return qp;
 337}
 338
 339struct rdma_dev_addr;
 340int rdma_resolve_ip_route(struct sockaddr *src_addr,
 341                          const struct sockaddr *dst_addr,
 342                          struct rdma_dev_addr *addr);
 343
 344int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 345                                 const union ib_gid *dgid,
 346                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 347                                 int *hoplimit);
 348void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 349                           const struct net_device *dev);
 350
 351struct sa_path_rec;
 352int roce_resolve_route_from_path(struct sa_path_rec *rec,
 353                                 const struct ib_gid_attr *attr);
 354
 355struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 356
 357void ib_free_port_attrs(struct ib_core_device *coredev);
 358int ib_setup_port_attrs(struct ib_core_device *coredev);
 359
 360int rdma_compatdev_set(u8 enable);
 361
 362int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 363                                 struct kobject *kobj, struct kobj_type *ktype,
 364                                 const char *name);
 365void ib_port_unregister_module_stat(struct kobject *kobj);
 366
 367int ib_device_set_netns_put(struct sk_buff *skb,
 368                            struct ib_device *dev, u32 ns_fd);
 369#endif /* _CORE_PRIV_H */
 370