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
  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
  49 struct 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
  57 extern const struct attribute_group ib_dev_attr_group;
  58 extern bool ib_devices_shared_netns;
  59
  60 int ib_device_register_sysfs(struct ib_device *device);
  61 void ib_device_unregister_sysfs(struct ib_device *device);
  62 int ib_device_rename(struct ib_device *ibdev, const char *name);
  63 int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
  64
  65 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  66               struct net_device *idev, void *cookie);
  67
  68 typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port,
  69                                    struct net_device *idev, void *cookie);
  70
  71 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
  72                                         unsigned int port);
  73
  74 void ib_enum_roce_netdev(struct ib_device *ib_dev,
  75                          roce_netdev_filter filter,
  76                          void *filter_cookie,
  77                          roce_netdev_callback cb,
  78                          void *cookie);
  79 void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
  80                               void *filter_cookie,
  81                               roce_netdev_callback cb,
  82                               void *cookie);
  83
  84 typedef int (*nldev_callback)(struct ib_device *device,
  85                               struct sk_buff *skb,
  86                               struct netlink_callback *cb,
  87                               unsigned int idx);
  88
  89 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
  90                      struct netlink_callback *cb);
  91
  92 struct ib_client_nl_info {
  93         struct sk_buff *nl_msg;
  94         struct device *cdev;
  95         unsigned int port;
  96         u64 abi;
  97 };
  98 int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
  99                           struct ib_client_nl_info *res);
 100
 101 enum ib_cache_gid_default_mode {
 102         IB_CACHE_GID_DEFAULT_MODE_SET,
 103         IB_CACHE_GID_DEFAULT_MODE_DELETE
 104 };
 105
 106 int ib_cache_gid_parse_type_str(const char *buf);
 107
 108 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 109
 110 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 111                                   struct net_device *ndev,
 112                                   unsigned long gid_type_mask,
 113                                   enum ib_cache_gid_default_mode mode);
 114
 115 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 116                      union ib_gid *gid, struct ib_gid_attr *attr);
 117
 118 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 119                      union ib_gid *gid, struct ib_gid_attr *attr);
 120
 121 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 122                                      struct net_device *ndev);
 123
 124 int roce_gid_mgmt_init(void);
 125 void roce_gid_mgmt_cleanup(void);
 126
 127 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 128
 129 int ib_cache_setup_one(struct ib_device *device);
 130 void ib_cache_cleanup_one(struct ib_device *device);
 131 void ib_cache_release_one(struct ib_device *device);
 132
 133 #ifdef CONFIG_CGROUP_RDMA
 134 void ib_device_register_rdmacg(struct ib_device *device);
 135 void ib_device_unregister_rdmacg(struct ib_device *device);
 136
 137 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 138                          struct ib_device *device,
 139                          enum rdmacg_resource_type resource_index);
 140
 141 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 142                         struct ib_device *device,
 143                         enum rdmacg_resource_type resource_index);
 144 #else
 145 static inline void ib_device_register_rdmacg(struct ib_device *device)
 146 {
 147 }
 148
 149 static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 150 {
 151 }
 152
 153 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 154                                        struct ib_device *device,
 155                                        enum rdmacg_resource_type resource_index)
 156 {
 157         return 0;
 158 }
 159
 160 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 161                                       struct ib_device *device,
 162                                       enum rdmacg_resource_type resource_index)
 163 {
 164 }
 165 #endif
 166
 167 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 168                                          struct net_device *upper)
 169 {
 170         return netdev_has_upper_dev_all_rcu(dev, upper);
 171 }
 172
 173 int addr_init(void);
 174 void addr_cleanup(void);
 175
 176 int ib_mad_init(void);
 177 void ib_mad_cleanup(void);
 178
 179 int ib_sa_init(void);
 180 void ib_sa_cleanup(void);
 181
 182 int rdma_nl_init(void);
 183 void rdma_nl_exit(void);
 184
 185 int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 186                               struct nlmsghdr *nlh,
 187                               struct netlink_ext_ack *extack);
 188 int ib_nl_handle_set_timeout(struct sk_buff *skb,
 189                              struct nlmsghdr *nlh,
 190                              struct netlink_ext_ack *extack);
 191 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 192                              struct nlmsghdr *nlh,
 193                              struct netlink_ext_ack *extack);
 194
 195 int ib_get_cached_subnet_prefix(struct ib_device *device,
 196                                 u8                port_num,
 197                                 u64              *sn_pfx);
 198
 199 #ifdef CONFIG_SECURITY_INFINIBAND
 200 void ib_security_release_port_pkey_list(struct ib_device *device);
 201
 202 void ib_security_cache_change(struct ib_device *device,
 203                               u8 port_num,
 204                               u64 subnet_prefix);
 205
 206 int ib_security_modify_qp(struct ib_qp *qp,
 207                           struct ib_qp_attr *qp_attr,
 208                           int qp_attr_mask,
 209                           struct ib_udata *udata);
 210
 211 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 212 void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 213 void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 214 void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 215 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 216 void ib_close_shared_qp_security(struct ib_qp_security *sec);
 217 int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 218                                 enum ib_qp_type qp_type);
 219 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 220 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 221 void ib_mad_agent_security_change(void);
 222 #else
 223 static inline void ib_security_release_port_pkey_list(struct ib_device *device)
 224 {
 225 }
 226
 227 static inline void ib_security_cache_change(struct ib_device *device,
 228                                             u8 port_num,
 229                                             u64 subnet_prefix)
 230 {
 231 }
 232
 233 static inline int ib_security_modify_qp(struct ib_qp *qp,
 234                                         struct ib_qp_attr *qp_attr,
 235                                         int qp_attr_mask,
 236                                         struct ib_udata *udata)
 237 {
 238         return qp->device->ops.modify_qp(qp->real_qp,
 239                                          qp_attr,
 240                                          qp_attr_mask,
 241                                          udata);
 242 }
 243
 244 static inline int ib_create_qp_security(struct ib_qp *qp,
 245                                         struct ib_device *dev)
 246 {
 247         return 0;
 248 }
 249
 250 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 251 {
 252 }
 253
 254 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 255 {
 256 }
 257
 258 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 259 {
 260 }
 261
 262 static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 263                                              struct ib_device *dev)
 264 {
 265         return 0;
 266 }
 267
 268 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 269 {
 270 }
 271
 272 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 273                                               enum ib_qp_type qp_type)
 274 {
 275         return 0;
 276 }
 277
 278 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 279 {
 280 }
 281
 282 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 283                                           u16 pkey_index)
 284 {
 285         return 0;
 286 }
 287
 288 static inline void ib_mad_agent_security_change(void)
 289 {
 290 }
 291 #endif
 292
 293 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
 294
 295 /* RDMA device netlink */
 296 void nldev_init(void);
 297 void nldev_exit(void);
 298
 299 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 300                                           struct ib_pd *pd,
 301                                           struct ib_qp_init_attr *attr,
 302                                           struct ib_udata *udata,
 303                                           struct ib_uobject *uobj)
 304 {
 305         enum ib_qp_type qp_type = attr->qp_type;
 306         struct ib_qp *qp;
 307         bool is_xrc;
 308
 309         if (!dev->ops.create_qp)
 310                 return ERR_PTR(-EOPNOTSUPP);
 311
 312         qp = dev->ops.create_qp(pd, attr, udata);
 313         if (IS_ERR(qp))
 314                 return qp;
 315
 316         qp->device = dev;
 317         qp->pd = pd;
 318         qp->uobject = uobj;
 319         qp->real_qp = qp;
 320         /*
 321          * We don't track XRC QPs for now, because they don't have PD
 322          * and more importantly they are created internaly by driver,
 323          * see mlx5 create_dev_resources() as an example.
 324          */
 325         is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT;
 326         if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) {
 327                 qp->res.type = RDMA_RESTRACK_QP;
 328                 if (uobj)
 329                         rdma_restrack_uadd(&qp->res);
 330                 else
 331                         rdma_restrack_kadd(&qp->res);
 332         } else
 333                 qp->res.valid = false;
 334
 335         return qp;
 336 }
 337
 338 struct rdma_dev_addr;
 339 int rdma_resolve_ip_route(struct sockaddr *src_addr,
 340                           const struct sockaddr *dst_addr,
 341                           struct rdma_dev_addr *addr);
 342
 343 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 344                                  const union ib_gid *dgid,
 345                                  u8 *dmac, const struct ib_gid_attr *sgid_attr,
 346                                  int *hoplimit);
 347 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
 348                            const struct net_device *dev);
 349
 350 struct sa_path_rec;
 351 int roce_resolve_route_from_path(struct sa_path_rec *rec,
 352                                  const struct ib_gid_attr *attr);
 353
 354 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
 355
 356 void ib_free_port_attrs(struct ib_core_device *coredev);
 357 int ib_setup_port_attrs(struct ib_core_device *coredev);
 358
 359 int rdma_compatdev_set(u8 enable);
 360
 361 int ib_port_register_module_stat(struct ib_device *device, u8 port_num,
 362                                  struct kobject *kobj, struct kobj_type *ktype,
 363                                  const char *name);
 364 void ib_port_unregister_module_stat(struct kobject *kobj);
 365
 366 int ib_device_set_netns_put(struct sk_buff *skb,
 367                             struct ib_device *dev, u32 ns_fd);
 368 #endif /* _CORE_PRIV_H */