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 1024
  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 #if IS_ENABLED(CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS)
  58 int cma_configfs_init(void);
  59 void cma_configfs_exit(void);
  60 #else
  61 static inline int cma_configfs_init(void)
  62 {
  63         return 0;
  64 }
  65
  66 static inline void cma_configfs_exit(void)
  67 {
  68 }
  69 #endif
  70 struct cma_device;
  71 void cma_ref_dev(struct cma_device *cma_dev);
  72 void cma_deref_dev(struct cma_device *cma_dev);
  73 typedef bool (*cma_device_filter)(struct ib_device *, void *);
  74 struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter  filter,
  75                                              void               *cookie);
  76 int cma_get_default_gid_type(struct cma_device *cma_dev,
  77                              unsigned int port);
  78 int cma_set_default_gid_type(struct cma_device *cma_dev,
  79                              unsigned int port,
  80                              enum ib_gid_type default_gid_type);
  81 int cma_get_default_roce_tos(struct cma_device *cma_dev, unsigned int port);
  82 int cma_set_default_roce_tos(struct cma_device *a_dev, unsigned int port,
  83                              u8 default_roce_tos);
  84 struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev);
  85
  86 int  ib_device_register_sysfs(struct ib_device *device,
  87                               int (*port_callback)(struct ib_device *,
  88                                                    u8, struct kobject *));
  89 void ib_device_unregister_sysfs(struct ib_device *device);
  90
  91 void ib_cache_setup(void);
  92 void ib_cache_cleanup(void);
  93
  94 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  95               struct net_device *idev, void *cookie);
  96
  97 typedef int (*roce_netdev_filter)(struct ib_device *device, u8 port,
  98              struct net_device *idev, void *cookie);
  99
 100 void ib_enum_roce_netdev(struct ib_device *ib_dev,
 101                          roce_netdev_filter filter,
 102                          void *filter_cookie,
 103                          roce_netdev_callback cb,
 104                          void *cookie);
 105 void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 106                               void *filter_cookie,
 107                               roce_netdev_callback cb,
 108                               void *cookie);
 109
 110 typedef int (*nldev_callback)(struct ib_device *device,
 111                               struct sk_buff *skb,
 112                               struct netlink_callback *cb,
 113                               unsigned int idx);
 114
 115 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 116                      struct netlink_callback *cb);
 117
 118 enum ib_cache_gid_default_mode {
 119         IB_CACHE_GID_DEFAULT_MODE_SET,
 120         IB_CACHE_GID_DEFAULT_MODE_DELETE
 121 };
 122
 123 int ib_cache_gid_parse_type_str(const char *buf);
 124
 125 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 126
 127 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 128                                   struct net_device *ndev,
 129                                   unsigned long gid_type_mask,
 130                                   enum ib_cache_gid_default_mode mode);
 131
 132 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 133                      union ib_gid *gid, struct ib_gid_attr *attr);
 134
 135 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 136                      union ib_gid *gid, struct ib_gid_attr *attr);
 137
 138 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 139                                      struct net_device *ndev);
 140
 141 int roce_gid_mgmt_init(void);
 142 void roce_gid_mgmt_cleanup(void);
 143
 144 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 145
 146 int ib_cache_setup_one(struct ib_device *device);
 147 void ib_cache_cleanup_one(struct ib_device *device);
 148 void ib_cache_release_one(struct ib_device *device);
 149
 150 #ifdef CONFIG_CGROUP_RDMA
 151 int ib_device_register_rdmacg(struct ib_device *device);
 152 void ib_device_unregister_rdmacg(struct ib_device *device);
 153
 154 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 155                          struct ib_device *device,
 156                          enum rdmacg_resource_type resource_index);
 157
 158 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 159                         struct ib_device *device,
 160                         enum rdmacg_resource_type resource_index);
 161 #else
 162 static inline int ib_device_register_rdmacg(struct ib_device *device)
 163 { return 0; }
 164
 165 static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 166 { }
 167
 168 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 169                                        struct ib_device *device,
 170                                        enum rdmacg_resource_type resource_index)
 171 { return 0; }
 172
 173 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 174                                       struct ib_device *device,
 175                                       enum rdmacg_resource_type resource_index)
 176 { }
 177 #endif
 178
 179 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 180                                          struct net_device *upper)
 181 {
 182         return netdev_has_upper_dev_all_rcu(dev, upper);
 183 }
 184
 185 int addr_init(void);
 186 void addr_cleanup(void);
 187
 188 int ib_mad_init(void);
 189 void ib_mad_cleanup(void);
 190
 191 int ib_sa_init(void);
 192 void ib_sa_cleanup(void);
 193
 194 int rdma_nl_init(void);
 195 void rdma_nl_exit(void);
 196
 197 int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 198                               struct nlmsghdr *nlh,
 199                               struct netlink_ext_ack *extack);
 200 int ib_nl_handle_set_timeout(struct sk_buff *skb,
 201                              struct nlmsghdr *nlh,
 202                              struct netlink_ext_ack *extack);
 203 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 204                              struct nlmsghdr *nlh,
 205                              struct netlink_ext_ack *extack);
 206
 207 int ib_get_cached_subnet_prefix(struct ib_device *device,
 208                                 u8                port_num,
 209                                 u64              *sn_pfx);
 210
 211 #ifdef CONFIG_SECURITY_INFINIBAND
 212 void ib_security_destroy_port_pkey_list(struct ib_device *device);
 213
 214 void ib_security_cache_change(struct ib_device *device,
 215                               u8 port_num,
 216                               u64 subnet_prefix);
 217
 218 int ib_security_modify_qp(struct ib_qp *qp,
 219                           struct ib_qp_attr *qp_attr,
 220                           int qp_attr_mask,
 221                           struct ib_udata *udata);
 222
 223 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 224 void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 225 void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 226 void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 227 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 228 void ib_close_shared_qp_security(struct ib_qp_security *sec);
 229 int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 230                                 enum ib_qp_type qp_type);
 231 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 232 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 233 #else
 234 static inline void ib_security_destroy_port_pkey_list(struct ib_device *device)
 235 {
 236 }
 237
 238 static inline void ib_security_cache_change(struct ib_device *device,
 239                                             u8 port_num,
 240                                             u64 subnet_prefix)
 241 {
 242 }
 243
 244 static inline int ib_security_modify_qp(struct ib_qp *qp,
 245                                         struct ib_qp_attr *qp_attr,
 246                                         int qp_attr_mask,
 247                                         struct ib_udata *udata)
 248 {
 249         return qp->device->modify_qp(qp->real_qp,
 250                                      qp_attr,
 251                                      qp_attr_mask,
 252                                      udata);
 253 }
 254
 255 static inline int ib_create_qp_security(struct ib_qp *qp,
 256                                         struct ib_device *dev)
 257 {
 258         return 0;
 259 }
 260
 261 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 262 {
 263 }
 264
 265 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 266 {
 267 }
 268
 269 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 270 {
 271 }
 272
 273 static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 274                                              struct ib_device *dev)
 275 {
 276         return 0;
 277 }
 278
 279 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 280 {
 281 }
 282
 283 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 284                                               enum ib_qp_type qp_type)
 285 {
 286         return 0;
 287 }
 288
 289 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 290 {
 291 }
 292
 293 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 294                                           u16 pkey_index)
 295 {
 296         return 0;
 297 }
 298 #endif
 299
 300 struct ib_device *ib_device_get_by_index(u32 ifindex);
 301 /* RDMA device netlink */
 302 void nldev_init(void);
 303 void nldev_exit(void);
 304
 305 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 306                                           struct ib_pd *pd,
 307                                           struct ib_qp_init_attr *attr,
 308                                           struct ib_udata *udata)
 309 {
 310         struct ib_qp *qp;
 311
 312         qp = dev->create_qp(pd, attr, udata);
 313         if (IS_ERR(qp))
 314                 return qp;
 315
 316         qp->device = dev;
 317         qp->pd = pd;
 318         /*
 319          * We don't track XRC QPs for now, because they don't have PD
 320          * and more importantly they are created internaly by driver,
 321          * see mlx5 create_dev_resources() as an example.
 322          */
 323         if (attr->qp_type < IB_QPT_XRC_INI) {
 324                 qp->res.type = RDMA_RESTRACK_QP;
 325                 rdma_restrack_add(&qp->res);
 326         } else
 327                 qp->res.valid = false;
 328
 329         return qp;
 330 }
 331 #endif /* _CORE_PRIV_H */