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#include <net/net_namespace.h>
  40#include <net/netns/generic.h>
  41
  42#include <rdma/ib_verbs.h>
  43#include <rdma/opa_addr.h>
  44#include <rdma/ib_mad.h>
  45#include <rdma/restrack.h>
  46#include "mad_priv.h"
  47#include "restrack.h"
  48
  49/* Total number of ports combined across all struct ib_devices's */
  50#define RDMA_MAX_PORTS 8192
  51
  52struct pkey_index_qp_list {
  53        struct list_head    pkey_index_list;
  54        u16                 pkey_index;
  55        /* Lock to hold while iterating the qp_list. */
  56        spinlock_t          qp_list_lock;
  57        struct list_head    qp_list;
  58};
  59
  60/**
  61 * struct rdma_dev_net - rdma net namespace metadata for a net
  62 * @nl_sock:    Pointer to netlink socket
  63 * @net:        Pointer to owner net namespace
  64 * @id:         xarray id to identify the net namespace.
  65 */
  66struct rdma_dev_net {
  67        struct sock *nl_sock;
  68        possible_net_t net;
  69        u32 id;
  70};
  71
  72extern const struct attribute_group ib_dev_attr_group;
  73extern bool ib_devices_shared_netns;
  74extern unsigned int rdma_dev_net_id;
  75
  76static inline struct rdma_dev_net *rdma_net_to_dev_net(struct net *net)
  77{
  78        return net_generic(net, rdma_dev_net_id);
  79}
  80
  81int ib_device_rename(struct ib_device *ibdev, const char *name);
  82int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  83
  84typedef void (*roce_netdev_callback)(struct ib_device *device, u32 port,
  85              struct net_device *idev, void *cookie);
  86
  87typedef bool (*roce_netdev_filter)(struct ib_device *device, u32 port,
  88                                   struct net_device *idev, void *cookie);
  89
  90struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  91                                        u32 port);
  92
  93void ib_enum_roce_netdev(struct ib_device *ib_dev,
  94                         roce_netdev_filter filter,
  95                         void *filter_cookie,
  96                         roce_netdev_callback cb,
  97                         void *cookie);
  98void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
  99                              void *filter_cookie,
 100                              roce_netdev_callback cb,
 101                              void *cookie);
 102
 103typedef int (*nldev_callback)(struct ib_device *device,
 104                              struct sk_buff *skb,
 105                              struct netlink_callback *cb,
 106                              unsigned int idx);
 107
 108int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 109                     struct netlink_callback *cb);
 110
 111struct ib_client_nl_info {
 112        struct sk_buff *nl_msg;
 113        struct device *cdev;
 114        u32 port;
 115        u64 abi;
 116};
 117int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
 118                          struct ib_client_nl_info *res);
 119
 120enum ib_cache_gid_default_mode {
 121        IB_CACHE_GID_DEFAULT_MODE_SET,
 122        IB_CACHE_GID_DEFAULT_MODE_DELETE
 123};
 124
 125int ib_cache_gid_parse_type_str(const char *buf);
 126
 127const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 128
 129void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u32 port,
 130                                  struct net_device *ndev,
 131                                  unsigned long gid_type_mask,
 132                                  enum ib_cache_gid_default_mode mode);
 133
 134int ib_cache_gid_add(struct ib_device *ib_dev, u32 port,
 135                     union ib_gid *gid, struct ib_gid_attr *attr);
 136
 137int ib_cache_gid_del(struct ib_device *ib_dev, u32 port,
 138                     union ib_gid *gid, struct ib_gid_attr *attr);
 139
 140int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u32 port,
 141                                     struct net_device *ndev);
 142
 143int roce_gid_mgmt_init(void);
 144void roce_gid_mgmt_cleanup(void);
 145
 146unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u32 port);
 147
 148int ib_cache_setup_one(struct ib_device *device);
 149void ib_cache_cleanup_one(struct ib_device *device);
 150void ib_cache_release_one(struct ib_device *device);
 151void ib_dispatch_event_clients(struct ib_event *event);
 152
 153#ifdef CONFIG_CGROUP_RDMA
 154void ib_device_register_rdmacg(struct ib_device *device);
 155void ib_device_unregister_rdmacg(struct ib_device *device);
 156
 157int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 158                         struct ib_device *device,
 159                         enum rdmacg_resource_type resource_index);
 160
 161void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 162                        struct ib_device *device,
 163                        enum rdmacg_resource_type resource_index);
 164#else
 165static inline void ib_device_register_rdmacg(struct ib_device *device)
 166{
 167}
 168
 169static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 170{
 171}
 172
 173static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 174                                       struct ib_device *device,
 175                                       enum rdmacg_resource_type resource_index)
 176{
 177        return 0;
 178}
 179
 180static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 181                                      struct ib_device *device,
 182                                      enum rdmacg_resource_type resource_index)
 183{
 184}
 185#endif
 186
 187static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 188                                         struct net_device *upper)
 189{
 190        return netdev_has_upper_dev_all_rcu(dev, upper);
 191}
 192
 193int addr_init(void);
 194void addr_cleanup(void);
 195
 196int ib_mad_init(void);
 197void ib_mad_cleanup(void);
 198
 199int ib_sa_init(void);
 200void ib_sa_cleanup(void);
 201
 202void rdma_nl_init(void);
 203void rdma_nl_exit(void);
 204
 205int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 206                              struct nlmsghdr *nlh,
 207                              struct netlink_ext_ack *extack);
 208int ib_nl_handle_set_timeout(struct sk_buff *skb,
 209                             struct nlmsghdr *nlh,
 210                             struct netlink_ext_ack *extack);
 211int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 212                             struct nlmsghdr *nlh,
 213                             struct netlink_ext_ack *extack);
 214
 215void ib_get_cached_subnet_prefix(struct ib_device *device,
 216                                u32 port_num,
 217                                u64 *sn_pfx);
 218
 219#ifdef CONFIG_SECURITY_INFINIBAND
 220void ib_security_release_port_pkey_list(struct ib_device *device);
 221
 222void ib_security_cache_change(struct ib_device *device,
 223                              u32 port_num,
 224                              u64 subnet_prefix);
 225
 226int ib_security_modify_qp(struct ib_qp *qp,
 227                          struct ib_qp_attr *qp_attr,
 228                          int qp_attr_mask,
 229                          struct ib_udata *udata);
 230
 231int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 232void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 233void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 234void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 235int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 236void ib_close_shared_qp_security(struct ib_qp_security *sec);
 237int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 238                                enum ib_qp_type qp_type);
 239void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 240int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 241void ib_mad_agent_security_change(void);
 242#else
 243static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 244{
 245}
 246
 247static inline void ib_security_cache_change(struct ib_device *device,
 248                                            u32 port_num,
 249                                            u64 subnet_prefix)
 250{
 251}
 252
 253static inline int ib_security_modify_qp(struct ib_qp *qp,
 254                                        struct ib_qp_attr *qp_attr,
 255                                        int qp_attr_mask,
 256                                        struct ib_udata *udata)
 257{
 258        return qp->device->ops.modify_qp(qp->real_qp,
 259                                         qp_attr,
 260                                         qp_attr_mask,
 261                                         udata);
 262}
 263
 264static inline int ib_create_qp_security(struct ib_qp *qp,
 265                                        struct ib_device *dev)
 266{
 267        return 0;
 268}
 269
 270static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 271{
 272}
 273
 274static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 275{
 276}
 277
 278static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 279{
 280}
 281
 282static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 283                                             struct ib_device *dev)
 284{
 285        return 0;
 286}
 287
 288static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 289{
 290}
 291
 292static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 293                                              enum ib_qp_type qp_type)
 294{
 295        return 0;
 296}
 297
 298static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 299{
 300}
 301
 302static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 303                                          u16 pkey_index)
 304{
 305        return 0;
 306}
 307
 308static inline void ib_mad_agent_security_change(void)
 309{
 310}
 311#endif
 312
 313struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 314
 315/* RDMA device netlink */
 316void nldev_init(void);
 317void nldev_exit(void);
 318
 319struct ib_qp *ib_create_qp_user(struct ib_device *dev, struct ib_pd *pd,
 320                                struct ib_qp_init_attr *attr,
 321                                struct ib_udata *udata,
 322                                struct ib_uqp_object *uobj, const char *caller);
 323
 324void ib_qp_usecnt_inc(struct ib_qp *qp);
 325void ib_qp_usecnt_dec(struct ib_qp *qp);
 326
 327struct rdma_dev_addr;
 328int rdma_resolve_ip_route(struct sockaddr *src_addr,
 329                          const struct sockaddr *dst_addr,
 330                          struct rdma_dev_addr *addr);
 331
 332int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 333                                 const union ib_gid *dgid,
 334                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 335                                 int *hoplimit);
 336void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 337                           const struct net_device *dev);
 338
 339struct sa_path_rec;
 340int roce_resolve_route_from_path(struct sa_path_rec *rec,
 341                                 const struct ib_gid_attr *attr);
 342
 343struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 344
 345void ib_free_port_attrs(struct ib_core_device *coredev);
 346int ib_setup_port_attrs(struct ib_core_device *coredev);
 347struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev, u32 port_num);
 348void ib_device_release_hw_stats(struct hw_stats_device_data *data);
 349int ib_setup_device_attrs(struct ib_device *ibdev);
 350
 351int rdma_compatdev_set(u8 enable);
 352
 353int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
 354                                   const struct attribute_group **groups);
 355void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
 356                                     const struct attribute_group **groups);
 357
 358int ib_device_set_netns_put(struct sk_buff *skb,
 359                            struct ib_device *dev, u32 ns_fd);
 360
 361int rdma_nl_net_init(struct rdma_dev_net *rnet);
 362void rdma_nl_net_exit(struct rdma_dev_net *rnet);
 363
 364struct rdma_umap_priv {
 365        struct vm_area_struct *vma;
 366        struct list_head list;
 367        struct rdma_user_mmap_entry *entry;
 368};
 369
 370void rdma_umap_priv_init(struct rdma_umap_priv *priv,
 371                         struct vm_area_struct *vma,
 372                         struct rdma_user_mmap_entry *entry);
 373
 374void ib_cq_pool_cleanup(struct ib_device *dev);
 375
 376#endif /* _CORE_PRIV_H */
 377