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 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port,
  92               struct net_device *idev, void *cookie);
  93
  94 typedef int (*roce_netdev_filter)(struct ib_device *device, u8 port,
  95              struct net_device *idev, void *cookie);
  96
  97 void ib_enum_roce_netdev(struct ib_device *ib_dev,
  98                          roce_netdev_filter filter,
  99                          void *filter_cookie,
 100                          roce_netdev_callback cb,
 101                          void *cookie);
 102 void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
 103                               void *filter_cookie,
 104                               roce_netdev_callback cb,
 105                               void *cookie);
 106
 107 typedef int (*nldev_callback)(struct ib_device *device,
 108                               struct sk_buff *skb,
 109                               struct netlink_callback *cb,
 110                               unsigned int idx);
 111
 112 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 113                      struct netlink_callback *cb);
 114
 115 enum ib_cache_gid_default_mode {
 116         IB_CACHE_GID_DEFAULT_MODE_SET,
 117         IB_CACHE_GID_DEFAULT_MODE_DELETE
 118 };
 119
 120 int ib_cache_gid_parse_type_str(const char *buf);
 121
 122 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
 123
 124 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
 125                                   struct net_device *ndev,
 126                                   unsigned long gid_type_mask,
 127                                   enum ib_cache_gid_default_mode mode);
 128
 129 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
 130                      union ib_gid *gid, struct ib_gid_attr *attr);
 131
 132 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
 133                      union ib_gid *gid, struct ib_gid_attr *attr);
 134
 135 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
 136                                      struct net_device *ndev);
 137
 138 int roce_gid_mgmt_init(void);
 139 void roce_gid_mgmt_cleanup(void);
 140
 141 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
 142
 143 int ib_cache_setup_one(struct ib_device *device);
 144 void ib_cache_cleanup_one(struct ib_device *device);
 145 void ib_cache_release_one(struct ib_device *device);
 146
 147 #ifdef CONFIG_CGROUP_RDMA
 148 int ib_device_register_rdmacg(struct ib_device *device);
 149 void ib_device_unregister_rdmacg(struct ib_device *device);
 150
 151 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 152                          struct ib_device *device,
 153                          enum rdmacg_resource_type resource_index);
 154
 155 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 156                         struct ib_device *device,
 157                         enum rdmacg_resource_type resource_index);
 158 #else
 159 static inline int ib_device_register_rdmacg(struct ib_device *device)
 160 { return 0; }
 161
 162 static inline void ib_device_unregister_rdmacg(struct ib_device *device)
 163 { }
 164
 165 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
 166                                        struct ib_device *device,
 167                                        enum rdmacg_resource_type resource_index)
 168 { return 0; }
 169
 170 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
 171                                       struct ib_device *device,
 172                                       enum rdmacg_resource_type resource_index)
 173 { }
 174 #endif
 175
 176 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
 177                                          struct net_device *upper)
 178 {
 179         return netdev_has_upper_dev_all_rcu(dev, upper);
 180 }
 181
 182 int addr_init(void);
 183 void addr_cleanup(void);
 184
 185 int ib_mad_init(void);
 186 void ib_mad_cleanup(void);
 187
 188 int ib_sa_init(void);
 189 void ib_sa_cleanup(void);
 190
 191 int rdma_nl_init(void);
 192 void rdma_nl_exit(void);
 193
 194 int ib_nl_handle_resolve_resp(struct sk_buff *skb,
 195                               struct nlmsghdr *nlh,
 196                               struct netlink_ext_ack *extack);
 197 int ib_nl_handle_set_timeout(struct sk_buff *skb,
 198                              struct nlmsghdr *nlh,
 199                              struct netlink_ext_ack *extack);
 200 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
 201                              struct nlmsghdr *nlh,
 202                              struct netlink_ext_ack *extack);
 203
 204 int ib_get_cached_subnet_prefix(struct ib_device *device,
 205                                 u8                port_num,
 206                                 u64              *sn_pfx);
 207
 208 #ifdef CONFIG_SECURITY_INFINIBAND
 209 void ib_security_destroy_port_pkey_list(struct ib_device *device);
 210
 211 void ib_security_cache_change(struct ib_device *device,
 212                               u8 port_num,
 213                               u64 subnet_prefix);
 214
 215 int ib_security_modify_qp(struct ib_qp *qp,
 216                           struct ib_qp_attr *qp_attr,
 217                           int qp_attr_mask,
 218                           struct ib_udata *udata);
 219
 220 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
 221 void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
 222 void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
 223 void ib_destroy_qp_security_end(struct ib_qp_security *sec);
 224 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
 225 void ib_close_shared_qp_security(struct ib_qp_security *sec);
 226 int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 227                                 enum ib_qp_type qp_type);
 228 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
 229 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
 230 #else
 231 static inline void ib_security_destroy_port_pkey_list(struct ib_device *device)
 232 {
 233 }
 234
 235 static inline void ib_security_cache_change(struct ib_device *device,
 236                                             u8 port_num,
 237                                             u64 subnet_prefix)
 238 {
 239 }
 240
 241 static inline int ib_security_modify_qp(struct ib_qp *qp,
 242                                         struct ib_qp_attr *qp_attr,
 243                                         int qp_attr_mask,
 244                                         struct ib_udata *udata)
 245 {
 246         return qp->device->modify_qp(qp->real_qp,
 247                                      qp_attr,
 248                                      qp_attr_mask,
 249                                      udata);
 250 }
 251
 252 static inline int ib_create_qp_security(struct ib_qp *qp,
 253                                         struct ib_device *dev)
 254 {
 255         return 0;
 256 }
 257
 258 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
 259 {
 260 }
 261
 262 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
 263 {
 264 }
 265
 266 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
 267 {
 268 }
 269
 270 static inline int ib_open_shared_qp_security(struct ib_qp *qp,
 271                                              struct ib_device *dev)
 272 {
 273         return 0;
 274 }
 275
 276 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
 277 {
 278 }
 279
 280 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
 281                                               enum ib_qp_type qp_type)
 282 {
 283         return 0;
 284 }
 285
 286 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
 287 {
 288 }
 289
 290 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
 291                                           u16 pkey_index)
 292 {
 293         return 0;
 294 }
 295 #endif
 296
 297 struct ib_device *ib_device_get_by_index(u32 ifindex);
 298 /* RDMA device netlink */
 299 void nldev_init(void);
 300 void nldev_exit(void);
 301
 302 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev,
 303                                           struct ib_pd *pd,
 304                                           struct ib_qp_init_attr *attr,
 305                                           struct ib_udata *udata,
 306                                           struct ib_uobject *uobj)
 307 {
 308         struct ib_qp *qp;
 309
 310         if (!dev->create_qp)
 311                 return ERR_PTR(-EOPNOTSUPP);
 312
 313         qp = dev->create_qp(pd, attr, udata);
 314         if (IS_ERR(qp))
 315                 return qp;
 316
 317         qp->device = dev;
 318         qp->pd = pd;
 319         qp->uobject = uobj;
 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         if (attr->qp_type < IB_QPT_XRC_INI) {
 326                 qp->res.type = RDMA_RESTRACK_QP;
 327                 rdma_restrack_add(&qp->res);
 328         } else
 329                 qp->res.valid = false;
 330
 331         return qp;
 332 }
 333
 334 struct rdma_dev_addr;
 335 int rdma_resolve_ip_route(struct sockaddr *src_addr,
 336                           const struct sockaddr *dst_addr,
 337                           struct rdma_dev_addr *addr);
 338
 339 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
 340                                  const union ib_gid *dgid,
 341                                  u8 *dmac, const struct net_device *ndev,
 342                                  int *hoplimit);
 343
 344 #endif /* _CORE_PRIV_H */