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_register_sysfs(struct ib_device *device);
  82void ib_device_unregister_sysfs(struct ib_device *device);
  83int ib_device_rename(struct ib_device *ibdev, const char *name);
  84int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  85
  86typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  87              struct net_device *idev, void *cookie);
  88
  89typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  90                                   struct net_device *idev, void *cookie);
  91
  92struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  93                                        unsigned int port);
  94
  95void ib_enum_roce_netdev(struct ib_device *ib_dev,
  96                         roce_netdev_filter filter,
  97                         void *filter_cookie,
  98                         roce_netdev_callback cb,
  99                         void *cookie);
 100void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 101                              void *filter_cookie,
 102                              roce_netdev_callback cb,
 103                              void *cookie);
 104
 105typedef int (*nldev_callback)(struct ib_device *device,
 106                              struct sk_buff *skb,
 107                              struct netlink_callback *cb,
 108                              unsigned int idx);
 109
 110int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 111                     struct netlink_callback *cb);
 112
 113struct ib_client_nl_info {
 114        struct sk_buff *nl_msg;
 115        struct device *cdev;
 116        unsigned int port;
 117        u64 abi;
 118};
 119int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
 120                          struct ib_client_nl_info *res);
 121
 122enum ib_cache_gid_default_mode {
 123        IB_CACHE_GID_DEFAULT_MODE_SET,
 124        IB_CACHE_GID_DEFAULT_MODE_DELETE
 125};
 126
 127int ib_cache_gid_parse_type_str(const char *buf);
 128
 129const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 130
 131void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 132                                  struct net_device *ndev,
 133                                  unsigned long gid_type_mask,
 134                                  enum ib_cache_gid_default_mode mode);
 135
 136int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 137                     union ib_gid *gid, struct ib_gid_attr *attr);
 138
 139int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 140                     union ib_gid *gid, struct ib_gid_attr *attr);
 141
 142int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 143                                     struct net_device *ndev);
 144
 145int roce_gid_mgmt_init(void);
 146void roce_gid_mgmt_cleanup(void);
 147
 148unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 149
 150int ib_cache_setup_one(struct ib_device *device);
 151void ib_cache_cleanup_one(struct ib_device *device);
 152void ib_cache_release_one(struct ib_device *device);
 153void ib_dispatch_event_clients(struct ib_event *event);
 154
 155#ifdef CONFIG_CGROUP_RDMA
 156void ib_device_register_rdmacg(struct ib_device *device);
 157void ib_device_unregister_rdmacg(struct ib_device *device);
 158
 159int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 160                         struct ib_device *device,
 161                         enum rdmacg_resource_type resource_index);
 162
 163void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 164                        struct ib_device *device,
 165                        enum rdmacg_resource_type resource_index);
 166#else
 167static inline void ib_device_register_rdmacg(struct ib_device *device)
 168{
 169}
 170
 171static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 172{
 173}
 174
 175static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 176                                       struct ib_device *device,
 177                                       enum rdmacg_resource_type resource_index)
 178{
 179        return 0;
 180}
 181
 182static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 183                                      struct ib_device *device,
 184                                      enum rdmacg_resource_type resource_index)
 185{
 186}
 187#endif
 188
 189static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 190                                         struct net_device *upper)
 191{
 192        return netdev_has_upper_dev_all_rcu(dev, upper);
 193}
 194
 195int addr_init(void);
 196void addr_cleanup(void);
 197
 198int ib_mad_init(void);
 199void ib_mad_cleanup(void);
 200
 201int ib_sa_init(void);
 202void ib_sa_cleanup(void);
 203
 204void rdma_nl_init(void);
 205void rdma_nl_exit(void);
 206
 207int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 208                              struct nlmsghdr *nlh,
 209                              struct netlink_ext_ack *extack);
 210int ib_nl_handle_set_timeout(struct sk_buff *skb,
 211                             struct nlmsghdr *nlh,
 212                             struct netlink_ext_ack *extack);
 213int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 214                             struct nlmsghdr *nlh,
 215                             struct netlink_ext_ack *extack);
 216
 217int ib_get_cached_subnet_prefix(struct ib_device *device,
 218                                u8                port_num,
 219                                u64              *sn_pfx);
 220
 221#ifdef CONFIG_SECURITY_INFINIBAND
 222void ib_security_release_port_pkey_list(struct ib_device *device);
 223
 224void ib_security_cache_change(struct ib_device *device,
 225                              u8 port_num,
 226                              u64 subnet_prefix);
 227
 228int ib_security_modify_qp(struct ib_qp *qp,
 229                          struct ib_qp_attr *qp_attr,
 230                          int qp_attr_mask,
 231                          struct ib_udata *udata);
 232
 233int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 234void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 235void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 236void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 237int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 238void ib_close_shared_qp_security(struct ib_qp_security *sec);
 239int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 240                                enum ib_qp_type qp_type);
 241void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 242int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 243void ib_mad_agent_security_change(void);
 244#else
 245static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 246{
 247}
 248
 249static inline void ib_security_cache_change(struct ib_device *device,
 250                                            u8 port_num,
 251                                            u64 subnet_prefix)
 252{
 253}
 254
 255static inline int ib_security_modify_qp(struct ib_qp *qp,
 256                                        struct ib_qp_attr *qp_attr,
 257                                        int qp_attr_mask,
 258                                        struct ib_udata *udata)
 259{
 260        return qp->device->ops.modify_qp(qp->real_qp,
 261                                         qp_attr,
 262                                         qp_attr_mask,
 263                                         udata);
 264}
 265
 266static inline int ib_create_qp_security(struct ib_qp *qp,
 267                                        struct ib_device *dev)
 268{
 269        return 0;
 270}
 271
 272static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 273{
 274}
 275
 276static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 277{
 278}
 279
 280static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 281{
 282}
 283
 284static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 285                                             struct ib_device *dev)
 286{
 287        return 0;
 288}
 289
 290static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 291{
 292}
 293
 294static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 295                                              enum ib_qp_type qp_type)
 296{
 297        return 0;
 298}
 299
 300static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 301{
 302}
 303
 304static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 305                                          u16 pkey_index)
 306{
 307        return 0;
 308}
 309
 310static inline void ib_mad_agent_security_change(void)
 311{
 312}
 313#endif
 314
 315struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 316
 317/* RDMA device netlink */
 318void nldev_init(void);
 319void nldev_exit(void);
 320
 321static inline struct ib_qp *
 322_ib_create_qp(struct ib_device *dev, struct ib_pd *pd,
 323              struct ib_qp_init_attr *attr, struct ib_udata *udata,
 324              struct ib_uqp_object *uobj, const char *caller)
 325{
 326        struct ib_qp *qp;
 327
 328        if (!dev->ops.create_qp)
 329                return ERR_PTR(-EOPNOTSUPP);
 330
 331        qp = dev->ops.create_qp(pd, attr, udata);
 332        if (IS_ERR(qp))
 333                return qp;
 334
 335        qp->device = dev;
 336        qp->pd = pd;
 337        qp->uobject = uobj;
 338        qp->real_qp = qp;
 339
 340        qp->qp_type = attr->qp_type;
 341        qp->rwq_ind_tbl = attr->rwq_ind_tbl;
 342        qp->send_cq = attr->send_cq;
 343        qp->recv_cq = attr->recv_cq;
 344        qp->srq = attr->srq;
 345        qp->rwq_ind_tbl = attr->rwq_ind_tbl;
 346        qp->event_handler = attr->event_handler;
 347        qp->port = attr->port_num;
 348
 349        atomic_set(&qp->usecnt, 0);
 350        spin_lock_init(&qp->mr_lock);
 351        INIT_LIST_HEAD(&qp->rdma_mrs);
 352        INIT_LIST_HEAD(&qp->sig_mrs);
 353
 354        rdma_restrack_new(&qp->res, RDMA_RESTRACK_QP);
 355        WARN_ONCE(!udata && !caller, "Missing kernel QP owner");
 356        rdma_restrack_set_name(&qp->res, udata ? NULL : caller);
 357        rdma_restrack_add(&qp->res);
 358        return qp;
 359}
 360
 361struct rdma_dev_addr;
 362int rdma_resolve_ip_route(struct sockaddr *src_addr,
 363                          const struct sockaddr *dst_addr,
 364                          struct rdma_dev_addr *addr);
 365
 366int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 367                                 const union ib_gid *dgid,
 368                                 u8 *dmac, const struct ib_gid_attr *sgid_attr,
 369                                 int *hoplimit);
 370void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 371                           const struct net_device *dev);
 372
 373struct sa_path_rec;
 374int roce_resolve_route_from_path(struct sa_path_rec *rec,
 375                                 const struct ib_gid_attr *attr);
 376
 377struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 378
 379void ib_free_port_attrs(struct ib_core_device *coredev);
 380int ib_setup_port_attrs(struct ib_core_device *coredev);
 381
 382int rdma_compatdev_set(u8 enable);
 383
 384int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 385                                 struct kobject *kobj, struct kobj_type *ktype,
 386                                 const char *name);
 387void ib_port_unregister_module_stat(struct kobject *kobj);
 388
 389int ib_device_set_netns_put(struct sk_buff *skb,
 390                            struct ib_device *dev, u32 ns_fd);
 391
 392int rdma_nl_net_init(struct rdma_dev_net *rnet);
 393void rdma_nl_net_exit(struct rdma_dev_net *rnet);
 394
 395struct rdma_umap_priv {
 396        struct vm_area_struct *vma;
 397        struct list_head list;
 398        struct rdma_user_mmap_entry *entry;
 399};
 400
 401void rdma_umap_priv_init(struct rdma_umap_priv *priv,
 402                         struct vm_area_struct *vma,
 403                         struct rdma_user_mmap_entry *entry);
 404
 405void ib_cq_pool_cleanup(struct ib_device *dev);
 406
 407#endif /* _CORE_PRIV_H */
 408