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);
  63
  64typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  65              struct net_device *idev, void *cookie);
  66
  67typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  68                                   struct net_device *idev, void *cookie);
  69
  70struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  71                                        unsigned int port);
  72
  73void ib_enum_roce_netdev(struct ib_device *ib_dev,
  74                         roce_netdev_filter filter,
  75                         void *filter_cookie,
  76                         roce_netdev_callback cb,
  77                         void *cookie);
  78void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
  79                              void *filter_cookie,
  80                              roce_netdev_callback cb,
  81                              void *cookie);
  82
  83typedef int (*nldev_callback)(struct ib_device *device,
  84                              struct sk_buff *skb,
  85                              struct netlink_callback *cb,
  86                              unsigned int idx);
  87
  88int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
  89                     struct netlink_callback *cb);
  90
  91enum ib_cache_gid_default_mode {
  92        IB_CACHE_GID_DEFAULT_MODE_SET,
  93        IB_CACHE_GID_DEFAULT_MODE_DELETE
  94};
  95
  96int ib_cache_gid_parse_type_str(const char *buf);
  97
  98const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
  99
 100void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 101                                  struct net_device *ndev,
 102                                  unsigned long gid_type_mask,
 103                                  enum ib_cache_gid_default_mode mode);
 104
 105int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 106                     union ib_gid *gid, struct ib_gid_attr *attr);
 107
 108int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 109                     union ib_gid *gid, struct ib_gid_attr *attr);
 110
 111int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 112                                     struct net_device *ndev);
 113
 114int roce_gid_mgmt_init(void);
 115void roce_gid_mgmt_cleanup(void);
 116
 117unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 118
 119int ib_cache_setup_one(struct ib_device *device);
 120void ib_cache_cleanup_one(struct ib_device *device);
 121void ib_cache_release_one(struct ib_device *device);
 122
 123#ifdef CONFIG_CGROUP_RDMA
 124void ib_device_register_rdmacg(struct ib_device *device);
 125void ib_device_unregister_rdmacg(struct ib_device *device);
 126
 127int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 128                         struct ib_device *device,
 129                         enum rdmacg_resource_type resource_index);
 130
 131void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 132                        struct ib_device *device,
 133                        enum rdmacg_resource_type resource_index);
 134#else
 135static inline void ib_device_register_rdmacg(struct ib_device *device)
 136{
 137}
 138
 139static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 140{
 141}
 142
 143static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 144                                       struct ib_device *device,
 145                                       enum rdmacg_resource_type resource_index)
 146{
 147        return 0;
 148}
 149
 150static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 151                                      struct ib_device *device,
 152                                      enum rdmacg_resource_type resource_index)
 153{
 154}
 155#endif
 156
 157static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 158                                         struct net_device *upper)
 159{
 160        return netdev_has_upper_dev_all_rcu(dev, upper);
 161}
 162
 163int addr_init(void);
 164void addr_cleanup(void);
 165
 166int ib_mad_init(void);
 167void ib_mad_cleanup(void);
 168
 169int ib_sa_init(void);
 170void ib_sa_cleanup(void);
 171
 172int rdma_nl_init(void);
 173void rdma_nl_exit(void);
 174
 175int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 176                              struct nlmsghdr *nlh,
 177                              struct netlink_ext_ack *extack);
 178int ib_nl_handle_set_timeout(struct sk_buff *skb,
 179                             struct nlmsghdr *nlh,
 180                             struct netlink_ext_ack *extack);
 181int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 182                             struct nlmsghdr *nlh,
 183                             struct netlink_ext_ack *extack);
 184
 185int ib_get_cached_subnet_prefix(struct ib_device *device,
 186                                u8                port_num,
 187                                u64              *sn_pfx);
 188
 189#ifdef CONFIG_SECURITY_INFINIBAND
 190void ib_security_release_port_pkey_list(struct ib_device *device);
 191
 192void ib_security_cache_change(struct ib_device *device,
 193                              u8 port_num,
 194                              u64 subnet_prefix);
 195
 196int ib_security_modify_qp(struct ib_qp *qp,
 197                          struct ib_qp_attr *qp_attr,
 198                          int qp_attr_mask,
 199                          struct ib_udata *udata);
 200
 201int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 202void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 203void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 204void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 205int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 206void ib_close_shared_qp_security(struct ib_qp_security *sec);
 207int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 208                                enum ib_qp_type qp_type);
 209void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 210int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 211void ib_mad_agent_security_change(void);
 212#else
 213static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 214{
 215}
 216
 217static inline void ib_security_cache_change(struct ib_device *device,
 218                                            u8 port_num,
 219                                            u64 subnet_prefix)
 220{
 221}
 222
 223static inline int ib_security_modify_qp(struct ib_qp *qp,
 224                                        struct ib_qp_attr *qp_attr,
 225                                        int qp_attr_mask,
 226                                        struct ib_udata *udata)
 227{
 228        return qp->device->ops.modify_qp(qp->real_qp,
 229                                         qp_attr,
 230                                         qp_attr_mask,
 231                                         udata);
 232}
 233
 234static inline int ib_create_qp_security(struct ib_qp *qp,
 235                                        struct ib_device *dev)
 236{
 237        return 0;
 238}
 239
 240static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 241{
 242}
 243
 244static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 245{
 246}
 247
 248static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 249{
 250}
 251
 252static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 253                                             struct ib_device *dev)
 254{
 255        return 0;
 256}
 257
 258static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 259{
 260}
 261
 262static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 263                                              enum ib_qp_type qp_type)
 264{
 265        return 0;
 266}
 267
 268static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 269{
 270}
 271
 272static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 273                                          u16 pkey_index)
 274{
 275        return 0;
 276}
 277
 278static inline void ib_mad_agent_security_change(void)
 279{
 280}
 281#endif
 282
 283struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 284
 285/* RDMA device netlink */
 286void nldev_init(void);
 287void nldev_exit(void);
 288
 289static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 290                                          struct ib_pd *pd,
 291                                          struct ib_qp_init_attr *attr,
 292                                          struct ib_udata *udata,
 293                                          struct ib_uobject *uobj)
 294{
 295        struct ib_qp *qp;
 296
 297        if (!dev->ops.create_qp)
 298                return ERR_PTR(-EOPNOTSUPP);
 299
 300        qp = dev->ops.create_qp(pd, attr, udata);
 301        if (IS_ERR(qp))
 302                return qp;
 303
 304        qp->device = dev;
 305        qp->pd = pd;
 306        qp->uobject = uobj;
 307        qp->real_qp = qp;
 308        /*
 309         * We don't track XRC QPs for now, because they don't have PD
 310         * and more importantly they are created internaly by driver,
 311         * see mlx5 create_dev_resources() as an example.
 312         */
 313        if (attr->qp_type < IB_QPT_XRC_INI) {
 314                qp->res.type = RDMA_RESTRACK_QP;
 315                if (uobj)
 316                        rdma_restrack_uadd(&qp->res);
 317                else
 318                        rdma_restrack_kadd(&qp->res);
 319        } else
 320                qp->res.valid = false;
 321
 322        return qp;
 323}
 324
 325struct rdma_dev_addr;
 326int rdma_resolve_ip_route(struct sockaddr *src_addr,
 327                          const struct sockaddr *dst_addr,
 328                          struct rdma_dev_addr *addr);
 329
 330int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 331                                 const union ib_gid *dgid,
 332                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 333                                 int *hoplimit);
 334void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 335                           const struct net_device *dev);
 336
 337struct sa_path_rec;
 338int roce_resolve_route_from_path(struct sa_path_rec *rec,
 339                                 const struct ib_gid_attr *attr);
 340
 341struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 342
 343void ib_free_port_attrs(struct ib_core_device *coredev);
 344int ib_setup_port_attrs(struct ib_core_device *coredev);
 345
 346int rdma_compatdev_set(u8 enable);
 347
 348int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 349                                 struct kobject *kobj, struct kobj_type *ktype,
 350                                 const char *name);
 351void ib_port_unregister_module_stat(struct kobject *kobj);
 352
 353int ib_device_set_netns_put(struct sk_buff *skb,
 354                            struct ib_device *dev, u32 ns_fd);
 355#endif /* _CORE_PRIV_H */
 356