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 1024
  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
  57#if IS_ENABLED(CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS)
  58int cma_configfs_init(void);
  59void cma_configfs_exit(void);
  60#else
  61static inline int cma_configfs_init(void)
  62{
  63        return 0;
  64}
  65
  66static inline void cma_configfs_exit(void)
  67{
  68}
  69#endif
  70struct cma_device;
  71void cma_ref_dev(struct cma_device *cma_dev);
  72void cma_deref_dev(struct cma_device *cma_dev);
  73typedef bool (*cma_device_filter)(struct ib_device *, void *);
  74struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter  filter,
  75                                             void               *cookie);
  76int cma_get_default_gid_type(struct cma_device *cma_dev,
  77                             unsigned int port);
  78int cma_set_default_gid_type(struct cma_device *cma_dev,
  79                             unsigned int port,
  80                             enum ib_gid_type default_gid_type);
  81int cma_get_default_roce_tos(struct cma_device *cma_dev, unsigned int port);
  82int cma_set_default_roce_tos(struct cma_device *a_dev, unsigned int port,
  83                             u8 default_roce_tos);
  84struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev);
  85
  86int  ib_device_register_sysfs(struct ib_device *device,
  87                              int (*port_callback)(struct ib_device *,
  88                                                   u8, struct kobject *));
  89void ib_device_unregister_sysfs(struct ib_device *device);
  90
  91void ib_cache_setup(void);
  92void ib_cache_cleanup(void);
  93
  94typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  95              struct net_device *idev, void *cookie);
  96
  97typedef int (*roce_netdev_filter)(struct ib_device *device, u8 port,
  98             struct net_device *idev, void *cookie);
  99
 100void ib_enum_roce_netdev(struct ib_device *ib_dev,
 101                         roce_netdev_filter filter,
 102                         void *filter_cookie,
 103                         roce_netdev_callback cb,
 104                         void *cookie);
 105void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 106                              void *filter_cookie,
 107                              roce_netdev_callback cb,
 108                              void *cookie);
 109
 110typedef int (*nldev_callback)(struct ib_device *device,
 111                              struct sk_buff *skb,
 112                              struct netlink_callback *cb,
 113                              unsigned int idx);
 114
 115int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 116                     struct netlink_callback *cb);
 117
 118enum ib_cache_gid_default_mode {
 119        IB_CACHE_GID_DEFAULT_MODE_SET,
 120        IB_CACHE_GID_DEFAULT_MODE_DELETE
 121};
 122
 123int ib_cache_gid_parse_type_str(const char *buf);
 124
 125const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 126
 127void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 128                                  struct net_device *ndev,
 129                                  unsigned long gid_type_mask,
 130                                  enum ib_cache_gid_default_mode mode);
 131
 132int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 133                     union ib_gid *gid, struct ib_gid_attr *attr);
 134
 135int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 136                     union ib_gid *gid, struct ib_gid_attr *attr);
 137
 138int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 139                                     struct net_device *ndev);
 140
 141int roce_gid_mgmt_init(void);
 142void roce_gid_mgmt_cleanup(void);
 143
 144unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 145
 146int ib_cache_setup_one(struct ib_device *device);
 147void ib_cache_cleanup_one(struct ib_device *device);
 148void ib_cache_release_one(struct ib_device *device);
 149
 150#ifdef CONFIG_CGROUP_RDMA
 151int ib_device_register_rdmacg(struct ib_device *device);
 152void ib_device_unregister_rdmacg(struct ib_device *device);
 153
 154int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 155                         struct ib_device *device,
 156                         enum rdmacg_resource_type resource_index);
 157
 158void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 159                        struct ib_device *device,
 160                        enum rdmacg_resource_type resource_index);
 161#else
 162static inline int ib_device_register_rdmacg(struct ib_device *device)
 163{ return 0; }
 164
 165static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 166{ }
 167
 168static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 169                                       struct ib_device *device,
 170                                       enum rdmacg_resource_type resource_index)
 171{ return 0; }
 172
 173static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 174                                      struct ib_device *device,
 175                                      enum rdmacg_resource_type resource_index)
 176{ }
 177#endif
 178
 179static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 180                                         struct net_device *upper)
 181{
 182        return netdev_has_upper_dev_all_rcu(dev, upper);
 183}
 184
 185int addr_init(void);
 186void addr_cleanup(void);
 187
 188int ib_mad_init(void);
 189void ib_mad_cleanup(void);
 190
 191int ib_sa_init(void);
 192void ib_sa_cleanup(void);
 193
 194int rdma_nl_init(void);
 195void rdma_nl_exit(void);
 196
 197int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 198                              struct nlmsghdr *nlh,
 199                              struct netlink_ext_ack *extack);
 200int ib_nl_handle_set_timeout(struct sk_buff *skb,
 201                             struct nlmsghdr *nlh,
 202                             struct netlink_ext_ack *extack);
 203int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 204                             struct nlmsghdr *nlh,
 205                             struct netlink_ext_ack *extack);
 206
 207int ib_get_cached_subnet_prefix(struct ib_device *device,
 208                                u8                port_num,
 209                                u64              *sn_pfx);
 210
 211#ifdef CONFIG_SECURITY_INFINIBAND
 212void ib_security_destroy_port_pkey_list(struct ib_device *device);
 213
 214void ib_security_cache_change(struct ib_device *device,
 215                              u8 port_num,
 216                              u64 subnet_prefix);
 217
 218int ib_security_modify_qp(struct ib_qp *qp,
 219                          struct ib_qp_attr *qp_attr,
 220                          int qp_attr_mask,
 221                          struct ib_udata *udata);
 222
 223int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 224void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 225void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 226void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 227int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 228void ib_close_shared_qp_security(struct ib_qp_security *sec);
 229int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 230                                enum ib_qp_type qp_type);
 231void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 232int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 233#else
 234static inline void ib_security_destroy_port_pkey_list(struct ib_device *device)
 235{
 236}
 237
 238static inline void ib_security_cache_change(struct ib_device *device,
 239                                            u8 port_num,
 240                                            u64 subnet_prefix)
 241{
 242}
 243
 244static inline int ib_security_modify_qp(struct ib_qp *qp,
 245                                        struct ib_qp_attr *qp_attr,
 246                                        int qp_attr_mask,
 247                                        struct ib_udata *udata)
 248{
 249        return qp->device->modify_qp(qp->real_qp,
 250                                     qp_attr,
 251                                     qp_attr_mask,
 252                                     udata);
 253}
 254
 255static inline int ib_create_qp_security(struct ib_qp *qp,
 256                                        struct ib_device *dev)
 257{
 258        return 0;
 259}
 260
 261static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 262{
 263}
 264
 265static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 266{
 267}
 268
 269static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 270{
 271}
 272
 273static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 274                                             struct ib_device *dev)
 275{
 276        return 0;
 277}
 278
 279static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 280{
 281}
 282
 283static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 284                                              enum ib_qp_type qp_type)
 285{
 286        return 0;
 287}
 288
 289static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 290{
 291}
 292
 293static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 294                                          u16 pkey_index)
 295{
 296        return 0;
 297}
 298#endif
 299
 300struct ib_device *ib_device_get_by_index(u32 ifindex);
 301/* RDMA device netlink */
 302void nldev_init(void);
 303void nldev_exit(void);
 304
 305static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 306                                          struct ib_pd *pd,
 307                                          struct ib_qp_init_attr *attr,
 308                                          struct ib_udata *udata,
 309                                          struct ib_uobject *uobj)
 310{
 311        struct ib_qp *qp;
 312
 313        if (!dev->create_qp)
 314                return ERR_PTR(-EOPNOTSUPP);
 315
 316        qp = dev->create_qp(pd, attr, udata);
 317        if (IS_ERR(qp))
 318                return qp;
 319
 320        qp->device = dev;
 321        qp->pd = pd;
 322        qp->uobject = uobj;
 323        /*
 324         * We don't track XRC QPs for now, because they don't have PD
 325         * and more importantly they are created internaly by driver,
 326         * see mlx5 create_dev_resources() as an example.
 327         */
 328        if (attr->qp_type < IB_QPT_XRC_INI) {
 329                qp->res.type = RDMA_RESTRACK_QP;
 330                rdma_restrack_add(&qp->res);
 331        } else
 332                qp->res.valid = false;
 333
 334        return qp;
 335}
 336
 337struct rdma_dev_addr;
 338int rdma_resolve_ip_route(struct sockaddr *src_addr,
 339                          const struct sockaddr *dst_addr,
 340                          struct rdma_dev_addr *addr);
 341
 342int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 343                                 const union ib_gid *dgid,
 344                                 u8 *dmac, const struct net_device *ndev,
 345                                 int *hoplimit);
 346
 347#endif /* _CORE_PRIV_H */
 348