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
  48/* Total number of ports combined across all struct ib_devices's */
  49#define RDMA_MAX_PORTS 8192
  50
  51struct pkey_index_qp_list {
  52        struct list_head    pkey_index_list;
  53        u16                 pkey_index;
  54        /* Lock to hold while iterating the qp_list. */
  55        spinlock_t          qp_list_lock;
  56        struct list_head    qp_list;
  57};
  58
  59/**
  60 * struct rdma_dev_net - rdma net namespace metadata for a net
  61 * @nl_sock:    Pointer to netlink socket
  62 * @net:        Pointer to owner net namespace
  63 * @id:         xarray id to identify the net namespace.
  64 */
  65struct rdma_dev_net {
  66        struct sock *nl_sock;
  67        possible_net_t net;
  68        u32 id;
  69};
  70
  71extern const struct attribute_group ib_dev_attr_group;
  72extern bool ib_devices_shared_netns;
  73extern unsigned int rdma_dev_net_id;
  74
  75static inline struct rdma_dev_net *rdma_net_to_dev_net(struct net *net)
  76{
  77        return net_generic(net, rdma_dev_net_id);
  78}
  79
  80int ib_device_register_sysfs(struct ib_device *device);
  81void ib_device_unregister_sysfs(struct ib_device *device);
  82int ib_device_rename(struct ib_device *ibdev, const char *name);
  83int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  84
  85typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  86              struct net_device *idev, void *cookie);
  87
  88typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  89                                   struct net_device *idev, void *cookie);
  90
  91struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  92                                        unsigned int port);
  93
  94void ib_enum_roce_netdev(struct ib_device *ib_dev,
  95                         roce_netdev_filter filter,
  96                         void *filter_cookie,
  97                         roce_netdev_callback cb,
  98                         void *cookie);
  99void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 100                              void *filter_cookie,
 101                              roce_netdev_callback cb,
 102                              void *cookie);
 103
 104typedef int (*nldev_callback)(struct ib_device *device,
 105                              struct sk_buff *skb,
 106                              struct netlink_callback *cb,
 107                              unsigned int idx);
 108
 109int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 110                     struct netlink_callback *cb);
 111
 112struct ib_client_nl_info {
 113        struct sk_buff *nl_msg;
 114        struct device *cdev;
 115        unsigned int port;
 116        u64 abi;
 117};
 118int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
 119                          struct ib_client_nl_info *res);
 120
 121enum ib_cache_gid_default_mode {
 122        IB_CACHE_GID_DEFAULT_MODE_SET,
 123        IB_CACHE_GID_DEFAULT_MODE_DELETE
 124};
 125
 126int ib_cache_gid_parse_type_str(const char *buf);
 127
 128const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 129
 130void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 131                                  struct net_device *ndev,
 132                                  unsigned long gid_type_mask,
 133                                  enum ib_cache_gid_default_mode mode);
 134
 135int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 136                     union ib_gid *gid, struct ib_gid_attr *attr);
 137
 138int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 139                     union ib_gid *gid, struct ib_gid_attr *attr);
 140
 141int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 142                                     struct net_device *ndev);
 143
 144int roce_gid_mgmt_init(void);
 145void roce_gid_mgmt_cleanup(void);
 146
 147unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 148
 149int ib_cache_setup_one(struct ib_device *device);
 150void ib_cache_cleanup_one(struct ib_device *device);
 151void ib_cache_release_one(struct ib_device *device);
 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
 215int ib_get_cached_subnet_prefix(struct ib_device *device,
 216                                u8                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                              u8 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                                            u8 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
 319static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 320                                          struct ib_pd *pd,
 321                                          struct ib_qp_init_attr *attr,
 322                                          struct ib_udata *udata,
 323                                          struct ib_uobject *uobj)
 324{
 325        enum ib_qp_type qp_type = attr->qp_type;
 326        struct ib_qp *qp;
 327        bool is_xrc;
 328
 329        if (!dev->ops.create_qp)
 330                return ERR_PTR(-EOPNOTSUPP);
 331
 332        qp = dev->ops.create_qp(pd, attr, udata);
 333        if (IS_ERR(qp))
 334                return qp;
 335
 336        qp->device = dev;
 337        qp->pd = pd;
 338        qp->uobject = uobj;
 339        qp->real_qp = qp;
 340        /*
 341         * We don't track XRC QPs for now, because they don't have PD
 342         * and more importantly they are created internaly by driver,
 343         * see mlx5 create_dev_resources() as an example.
 344         */
 345        is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT;
 346        if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) {
 347                qp->res.type = RDMA_RESTRACK_QP;
 348                if (uobj)
 349                        rdma_restrack_uadd(&qp->res);
 350                else
 351                        rdma_restrack_kadd(&qp->res);
 352        } else
 353                qp->res.valid = false;
 354
 355        return qp;
 356}
 357
 358struct rdma_dev_addr;
 359int rdma_resolve_ip_route(struct sockaddr *src_addr,
 360                          const struct sockaddr *dst_addr,
 361                          struct rdma_dev_addr *addr);
 362
 363int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 364                                 const union ib_gid *dgid,
 365                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 366                                 int *hoplimit);
 367void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 368                           const struct net_device *dev);
 369
 370struct sa_path_rec;
 371int roce_resolve_route_from_path(struct sa_path_rec *rec,
 372                                 const struct ib_gid_attr *attr);
 373
 374struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 375
 376void ib_free_port_attrs(struct ib_core_device *coredev);
 377int ib_setup_port_attrs(struct ib_core_device *coredev);
 378
 379int rdma_compatdev_set(u8 enable);
 380
 381int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 382                                 struct kobject *kobj, struct kobj_type *ktype,
 383                                 const char *name);
 384void ib_port_unregister_module_stat(struct kobject *kobj);
 385
 386int ib_device_set_netns_put(struct sk_buff *skb,
 387                            struct ib_device *dev, u32 ns_fd);
 388
 389int rdma_nl_net_init(struct rdma_dev_net *rnet);
 390void rdma_nl_net_exit(struct rdma_dev_net *rnet);
 391#endif /* _CORE_PRIV_H */
 392