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
  57int  ib_device_register_sysfs(struct ib_device *device,
  58                              int (*port_callback)(struct ib_device *,
  59                                                   u8, struct kobject *));
  60void ib_device_unregister_sysfs(struct ib_device *device);
  61int ib_device_rename(struct ib_device *ibdev, const char *name);
  62
  63typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  64              struct net_device *idev, void *cookie);
  65
  66typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  67                                   struct net_device *idev, void *cookie);
  68
  69void ib_enum_roce_netdev(struct ib_device *ib_dev,
  70                         roce_netdev_filter filter,
  71                         void *filter_cookie,
  72                         roce_netdev_callback cb,
  73                         void *cookie);
  74void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
  75                              void *filter_cookie,
  76                              roce_netdev_callback cb,
  77                              void *cookie);
  78
  79typedef int (*nldev_callback)(struct ib_device *device,
  80                              struct sk_buff *skb,
  81                              struct netlink_callback *cb,
  82                              unsigned int idx);
  83
  84int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
  85                     struct netlink_callback *cb);
  86
  87enum ib_cache_gid_default_mode {
  88        IB_CACHE_GID_DEFAULT_MODE_SET,
  89        IB_CACHE_GID_DEFAULT_MODE_DELETE
  90};
  91
  92int ib_cache_gid_parse_type_str(const char *buf);
  93
  94const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
  95
  96void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
  97                                  struct net_device *ndev,
  98                                  unsigned long gid_type_mask,
  99                                  enum ib_cache_gid_default_mode mode);
 100
 101int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 102                     union ib_gid *gid, struct ib_gid_attr *attr);
 103
 104int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 105                     union ib_gid *gid, struct ib_gid_attr *attr);
 106
 107int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 108                                     struct net_device *ndev);
 109
 110int roce_gid_mgmt_init(void);
 111void roce_gid_mgmt_cleanup(void);
 112
 113unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 114
 115int ib_cache_setup_one(struct ib_device *device);
 116void ib_cache_cleanup_one(struct ib_device *device);
 117void ib_cache_release_one(struct ib_device *device);
 118
 119#ifdef CONFIG_CGROUP_RDMA
 120int ib_device_register_rdmacg(struct ib_device *device);
 121void ib_device_unregister_rdmacg(struct ib_device *device);
 122
 123int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 124                         struct ib_device *device,
 125                         enum rdmacg_resource_type resource_index);
 126
 127void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 128                        struct ib_device *device,
 129                        enum rdmacg_resource_type resource_index);
 130#else
 131static inline int ib_device_register_rdmacg(struct ib_device *device)
 132{ return 0; }
 133
 134static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 135{ }
 136
 137static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 138                                       struct ib_device *device,
 139                                       enum rdmacg_resource_type resource_index)
 140{ return 0; }
 141
 142static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 143                                      struct ib_device *device,
 144                                      enum rdmacg_resource_type resource_index)
 145{ }
 146#endif
 147
 148static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 149                                         struct net_device *upper)
 150{
 151        return netdev_has_upper_dev_all_rcu(dev, upper);
 152}
 153
 154int addr_init(void);
 155void addr_cleanup(void);
 156
 157int ib_mad_init(void);
 158void ib_mad_cleanup(void);
 159
 160int ib_sa_init(void);
 161void ib_sa_cleanup(void);
 162
 163int rdma_nl_init(void);
 164void rdma_nl_exit(void);
 165
 166int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 167                              struct nlmsghdr *nlh,
 168                              struct netlink_ext_ack *extack);
 169int ib_nl_handle_set_timeout(struct sk_buff *skb,
 170                             struct nlmsghdr *nlh,
 171                             struct netlink_ext_ack *extack);
 172int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 173                             struct nlmsghdr *nlh,
 174                             struct netlink_ext_ack *extack);
 175
 176int ib_get_cached_subnet_prefix(struct ib_device *device,
 177                                u8                port_num,
 178                                u64              *sn_pfx);
 179
 180#ifdef CONFIG_SECURITY_INFINIBAND
 181void ib_security_release_port_pkey_list(struct ib_device *device);
 182
 183void ib_security_cache_change(struct ib_device *device,
 184                              u8 port_num,
 185                              u64 subnet_prefix);
 186
 187int ib_security_modify_qp(struct ib_qp *qp,
 188                          struct ib_qp_attr *qp_attr,
 189                          int qp_attr_mask,
 190                          struct ib_udata *udata);
 191
 192int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 193void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 194void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 195void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 196int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 197void ib_close_shared_qp_security(struct ib_qp_security *sec);
 198int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 199                                enum ib_qp_type qp_type);
 200void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 201int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 202void ib_mad_agent_security_change(void);
 203#else
 204static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 205{
 206}
 207
 208static inline void ib_security_cache_change(struct ib_device *device,
 209                                            u8 port_num,
 210                                            u64 subnet_prefix)
 211{
 212}
 213
 214static inline int ib_security_modify_qp(struct ib_qp *qp,
 215                                        struct ib_qp_attr *qp_attr,
 216                                        int qp_attr_mask,
 217                                        struct ib_udata *udata)
 218{
 219        return qp->device->ops.modify_qp(qp->real_qp,
 220                                         qp_attr,
 221                                         qp_attr_mask,
 222                                         udata);
 223}
 224
 225static inline int ib_create_qp_security(struct ib_qp *qp,
 226                                        struct ib_device *dev)
 227{
 228        return 0;
 229}
 230
 231static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 232{
 233}
 234
 235static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 236{
 237}
 238
 239static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 240{
 241}
 242
 243static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 244                                             struct ib_device *dev)
 245{
 246        return 0;
 247}
 248
 249static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 250{
 251}
 252
 253static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 254                                              enum ib_qp_type qp_type)
 255{
 256        return 0;
 257}
 258
 259static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 260{
 261}
 262
 263static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 264                                          u16 pkey_index)
 265{
 266        return 0;
 267}
 268
 269static inline void ib_mad_agent_security_change(void)
 270{
 271}
 272#endif
 273
 274struct ib_device *ib_device_get_by_index(u32 ifindex);
 275/* RDMA device netlink */
 276void nldev_init(void);
 277void nldev_exit(void);
 278
 279static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 280                                          struct ib_pd *pd,
 281                                          struct ib_qp_init_attr *attr,
 282                                          struct ib_udata *udata,
 283                                          struct ib_uobject *uobj)
 284{
 285        struct ib_qp *qp;
 286
 287        if (!dev->ops.create_qp)
 288                return ERR_PTR(-EOPNOTSUPP);
 289
 290        qp = dev->ops.create_qp(pd, attr, udata);
 291        if (IS_ERR(qp))
 292                return qp;
 293
 294        qp->device = dev;
 295        qp->pd = pd;
 296        qp->uobject = uobj;
 297        /*
 298         * We don't track XRC QPs for now, because they don't have PD
 299         * and more importantly they are created internaly by driver,
 300         * see mlx5 create_dev_resources() as an example.
 301         */
 302        if (attr->qp_type < IB_QPT_XRC_INI) {
 303                qp->res.type = RDMA_RESTRACK_QP;
 304                if (uobj)
 305                        rdma_restrack_uadd(&qp->res);
 306                else
 307                        rdma_restrack_kadd(&qp->res);
 308        } else
 309                qp->res.valid = false;
 310
 311        return qp;
 312}
 313
 314struct rdma_dev_addr;
 315int rdma_resolve_ip_route(struct sockaddr *src_addr,
 316                          const struct sockaddr *dst_addr,
 317                          struct rdma_dev_addr *addr);
 318
 319int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 320                                 const union ib_gid *dgid,
 321                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 322                                 int *hoplimit);
 323void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 324                           const struct net_device *dev);
 325
 326struct sa_path_rec;
 327int roce_resolve_route_from_path(struct sa_path_rec *rec,
 328                                 const struct ib_gid_attr *attr);
 329
 330struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 331#endif /* _CORE_PRIV_H */
 332