drivers/infiniband/core/core_priv.h

   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
  52 struct 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  */
  66 struct rdma_dev_net {
  67         struct sock *nl_sock;
  68         possible_net_t net;
  69         u32 id;
  70 };
  71
  72 extern const struct attribute_group ib_dev_attr_group;
  73 extern bool ib_devices_shared_netns;
  74 extern unsigned int rdma_dev_net_id;
  75
  76 static 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
  81 int ib_device_register_sysfs(struct ib_device *device);
  82 void ib_device_unregister_sysfs(struct ib_device *device);
  83 int ib_device_rename(struct ib_device *ibdev, const char *name);
  84 int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  85
  86 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  87               struct net_device *idev, void *cookie);
  88
  89 typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  90                                    struct net_device *idev, void *cookie);
  91
  92 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  93                                         unsigned int port);
  94
  95 void 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);
 100 void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 101                               void *filter_cookie,
 102                               roce_netdev_callback cb,
 103                               void *cookie);
 104
 105 typedef int (*nldev_callback)(struct ib_device *device,
 106                               struct sk_buff *skb,
 107                               struct netlink_callback *cb,
 108                               unsigned int idx);
 109
 110 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 111                      struct netlink_callback *cb);
 112
 113 struct ib_client_nl_info {
 114         struct sk_buff *nl_msg;
 115         struct device *cdev;
 116         unsigned int port;
 117         u64 abi;
 118 };
 119 int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
 120                           struct ib_client_nl_info *res);
 121
 122 enum ib_cache_gid_default_mode {
 123         IB_CACHE_GID_DEFAULT_MODE_SET,
 124         IB_CACHE_GID_DEFAULT_MODE_DELETE
 125 };
 126
 127 int ib_cache_gid_parse_type_str(const char *buf);
 128
 129 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 130
 131 void 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
 136 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 137                      union ib_gid *gid, struct ib_gid_attr *attr);
 138
 139 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 140                      union ib_gid *gid, struct ib_gid_attr *attr);
 141
 142 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 143                                      struct net_device *ndev);
 144
 145 int roce_gid_mgmt_init(void);
 146 void roce_gid_mgmt_cleanup(void);
 147
 148 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 149
 150 int ib_cache_setup_one(struct ib_device *device);
 151 void ib_cache_cleanup_one(struct ib_device *device);
 152 void ib_cache_release_one(struct ib_device *device);
 153 void ib_dispatch_event_clients(struct ib_event *event);
 154
 155 #ifdef CONFIG_CGROUP_RDMA
 156 void ib_device_register_rdmacg(struct ib_device *device);
 157 void ib_device_unregister_rdmacg(struct ib_device *device);
 158
 159 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 160                          struct ib_device *device,
 161                          enum rdmacg_resource_type resource_index);
 162
 163 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 164                         struct ib_device *device,
 165                         enum rdmacg_resource_type resource_index);
 166 #else
 167 static inline void ib_device_register_rdmacg(struct ib_device *device)
 168 {
 169 }
 170
 171 static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 172 {
 173 }
 174
 175 static 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
 182 static 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
 189 static 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
 195 int addr_init(void);
 196 void addr_cleanup(void);
 197
 198 int ib_mad_init(void);
 199 void ib_mad_cleanup(void);
 200
 201 int ib_sa_init(void);
 202 void ib_sa_cleanup(void);
 203
 204 void rdma_nl_init(void);
 205 void rdma_nl_exit(void);
 206
 207 int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 208                               struct nlmsghdr *nlh,
 209                               struct netlink_ext_ack *extack);
 210 int ib_nl_handle_set_timeout(struct sk_buff *skb,
 211                              struct nlmsghdr *nlh,
 212                              struct netlink_ext_ack *extack);
 213 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 214                              struct nlmsghdr *nlh,
 215                              struct netlink_ext_ack *extack);
 216
 217 int ib_get_cached_subnet_prefix(struct ib_device *device,
 218                                 u8                port_num,
 219                                 u64              *sn_pfx);
 220
 221 #ifdef CONFIG_SECURITY_INFINIBAND
 222 void ib_security_release_port_pkey_list(struct ib_device *device);
 223
 224 void ib_security_cache_change(struct ib_device *device,
 225                               u8 port_num,
 226                               u64 subnet_prefix);
 227
 228 int 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
 233 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 234 void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 235 void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 236 void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 237 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 238 void ib_close_shared_qp_security(struct ib_qp_security *sec);
 239 int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 240                                 enum ib_qp_type qp_type);
 241 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 242 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 243 void ib_mad_agent_security_change(void);
 244 #else
 245 static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 246 {
 247 }
 248
 249 static inline void ib_security_cache_change(struct ib_device *device,
 250                                             u8 port_num,
 251                                             u64 subnet_prefix)
 252 {
 253 }
 254
 255 static 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
 266 static inline int ib_create_qp_security(struct ib_qp *qp,
 267                                         struct ib_device *dev)
 268 {
 269         return 0;
 270 }
 271
 272 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 273 {
 274 }
 275
 276 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 277 {
 278 }
 279
 280 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 281 {
 282 }
 283
 284 static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 285                                              struct ib_device *dev)
 286 {
 287         return 0;
 288 }
 289
 290 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 291 {
 292 }
 293
 294 static 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
 300 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 301 {
 302 }
 303
 304 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 305                                           u16 pkey_index)
 306 {
 307         return 0;
 308 }
 309
 310 static inline void ib_mad_agent_security_change(void)
 311 {
 312 }
 313 #endif
 314
 315 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 316
 317 /* RDMA device netlink */
 318 void nldev_init(void);
 319 void nldev_exit(void);
 320
 321 static 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
 361 struct rdma_dev_addr;
 362 int rdma_resolve_ip_route(struct sockaddr *src_addr,
 363                           const struct sockaddr *dst_addr,
 364                           struct rdma_dev_addr *addr);
 365
 366 int 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);
 370 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 371                            const struct net_device *dev);
 372
 373 struct sa_path_rec;
 374 int roce_resolve_route_from_path(struct sa_path_rec *rec,
 375                                  const struct ib_gid_attr *attr);
 376
 377 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 378
 379 void ib_free_port_attrs(struct ib_core_device *coredev);
 380 int ib_setup_port_attrs(struct ib_core_device *coredev);
 381
 382 int rdma_compatdev_set(u8 enable);
 383
 384 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 385                                  struct kobject *kobj, struct kobj_type *ktype,
 386                                  const char *name);
 387 void ib_port_unregister_module_stat(struct kobject *kobj);
 388
 389 int ib_device_set_netns_put(struct sk_buff *skb,
 390                             struct ib_device *dev, u32 ns_fd);
 391
 392 int rdma_nl_net_init(struct rdma_dev_net *rnet);
 393 void rdma_nl_net_exit(struct rdma_dev_net *rnet);
 394
 395 struct rdma_umap_priv {
 396         struct vm_area_struct *vma;
 397         struct list_head list;
 398         struct rdma_user_mmap_entry *entry;
 399 };
 400
 401 void rdma_umap_priv_init(struct rdma_umap_priv *priv,
 402                          struct vm_area_struct *vma,
 403                          struct rdma_user_mmap_entry *entry);
 404
 405 void ib_cq_pool_cleanup(struct ib_device *dev);
 406
 407 #endif /* _CORE_PRIV_H */