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 48 /* Total number of ports combined across all struct ib_devices's */ 49 #define RDMA_MAX_PORTS 8192 50 51 struct pkey_index_qp_list { 52 struct list_head pkey_index_list; 53 u16 pkey_index; 54 /* Lock to hold while iterating the qp_list. */ 55 spinlock_t qp_list_lock; 56 struct list_head qp_list; 57 }; 58 59 /** 60 * struct rdma_dev_net - rdma net namespace metadata for a net 61 * @nl_sock: Pointer to netlink socket 62 * @net: Pointer to owner net namespace 63 * @id: xarray id to identify the net namespace. 64 */ 65 struct rdma_dev_net { 66 struct sock *nl_sock; 67 possible_net_t net; 68 u32 id; 69 }; 70 71 extern const struct attribute_group ib_dev_attr_group; 72 extern bool ib_devices_shared_netns; 73 extern unsigned int rdma_dev_net_id; 74 75 static inline struct rdma_dev_net *rdma_net_to_dev_net(struct net *net) 76 { 77 return net_generic(net, rdma_dev_net_id); 78 } 79 80 int ib_device_register_sysfs(struct ib_device *device); 81 void ib_device_unregister_sysfs(struct ib_device *device); 82 int ib_device_rename(struct ib_device *ibdev, const char *name); 83 int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim); 84 85 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port, 86 struct net_device *idev, void *cookie); 87 88 typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port, 89 struct net_device *idev, void *cookie); 90 91 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev, 92 unsigned int port); 93 94 void ib_enum_roce_netdev(struct ib_device *ib_dev, 95 roce_netdev_filter filter, 96 void *filter_cookie, 97 roce_netdev_callback cb, 98 void *cookie); 99 void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 100 void *filter_cookie, 101 roce_netdev_callback cb, 102 void *cookie); 103 104 typedef int (*nldev_callback)(struct ib_device *device, 105 struct sk_buff *skb, 106 struct netlink_callback *cb, 107 unsigned int idx); 108 109 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 110 struct netlink_callback *cb); 111 112 struct ib_client_nl_info { 113 struct sk_buff *nl_msg; 114 struct device *cdev; 115 unsigned int port; 116 u64 abi; 117 }; 118 int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name, 119 struct ib_client_nl_info *res); 120 121 enum ib_cache_gid_default_mode { 122 IB_CACHE_GID_DEFAULT_MODE_SET, 123 IB_CACHE_GID_DEFAULT_MODE_DELETE 124 }; 125 126 int ib_cache_gid_parse_type_str(const char *buf); 127 128 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type); 129 130 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port, 131 struct net_device *ndev, 132 unsigned long gid_type_mask, 133 enum ib_cache_gid_default_mode mode); 134 135 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port, 136 union ib_gid *gid, struct ib_gid_attr *attr); 137 138 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port, 139 union ib_gid *gid, struct ib_gid_attr *attr); 140 141 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port, 142 struct net_device *ndev); 143 144 int roce_gid_mgmt_init(void); 145 void roce_gid_mgmt_cleanup(void); 146 147 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port); 148 149 int ib_cache_setup_one(struct ib_device *device); 150 void ib_cache_cleanup_one(struct ib_device *device); 151 void ib_cache_release_one(struct ib_device *device); 152 void ib_dispatch_event_clients(struct ib_event *event); 153 154 #ifdef CONFIG_CGROUP_RDMA 155 void ib_device_register_rdmacg(struct ib_device *device); 156 void ib_device_unregister_rdmacg(struct ib_device *device); 157 158 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 159 struct ib_device *device, 160 enum rdmacg_resource_type resource_index); 161 162 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 163 struct ib_device *device, 164 enum rdmacg_resource_type resource_index); 165 #else 166 static inline void ib_device_register_rdmacg(struct ib_device *device) 167 { 168 } 169 170 static inline void ib_device_unregister_rdmacg(struct ib_device *device) 171 { 172 } 173 174 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 175 struct ib_device *device, 176 enum rdmacg_resource_type resource_index) 177 { 178 return 0; 179 } 180 181 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 182 struct ib_device *device, 183 enum rdmacg_resource_type resource_index) 184 { 185 } 186 #endif 187 188 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev, 189 struct net_device *upper) 190 { 191 return netdev_has_upper_dev_all_rcu(dev, upper); 192 } 193 194 int addr_init(void); 195 void addr_cleanup(void); 196 197 int ib_mad_init(void); 198 void ib_mad_cleanup(void); 199 200 int ib_sa_init(void); 201 void ib_sa_cleanup(void); 202 203 void rdma_nl_init(void); 204 void rdma_nl_exit(void); 205 206 int ib_nl_handle_resolve_resp(struct sk_buff *skb, 207 struct nlmsghdr *nlh, 208 struct netlink_ext_ack *extack); 209 int ib_nl_handle_set_timeout(struct sk_buff *skb, 210 struct nlmsghdr *nlh, 211 struct netlink_ext_ack *extack); 212 int ib_nl_handle_ip_res_resp(struct sk_buff *skb, 213 struct nlmsghdr *nlh, 214 struct netlink_ext_ack *extack); 215 216 int ib_get_cached_subnet_prefix(struct ib_device *device, 217 u8 port_num, 218 u64 *sn_pfx); 219 220 #ifdef CONFIG_SECURITY_INFINIBAND 221 void ib_security_release_port_pkey_list(struct ib_device *device); 222 223 void ib_security_cache_change(struct ib_device *device, 224 u8 port_num, 225 u64 subnet_prefix); 226 227 int ib_security_modify_qp(struct ib_qp *qp, 228 struct ib_qp_attr *qp_attr, 229 int qp_attr_mask, 230 struct ib_udata *udata); 231 232 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev); 233 void ib_destroy_qp_security_begin(struct ib_qp_security *sec); 234 void ib_destroy_qp_security_abort(struct ib_qp_security *sec); 235 void ib_destroy_qp_security_end(struct ib_qp_security *sec); 236 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev); 237 void ib_close_shared_qp_security(struct ib_qp_security *sec); 238 int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 239 enum ib_qp_type qp_type); 240 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent); 241 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index); 242 void ib_mad_agent_security_change(void); 243 #else 244 static inline void ib_security_release_port_pkey_list(struct ib_device *device) 245 { 246 } 247 248 static inline void ib_security_cache_change(struct ib_device *device, 249 u8 port_num, 250 u64 subnet_prefix) 251 { 252 } 253 254 static inline int ib_security_modify_qp(struct ib_qp *qp, 255 struct ib_qp_attr *qp_attr, 256 int qp_attr_mask, 257 struct ib_udata *udata) 258 { 259 return qp->device->ops.modify_qp(qp->real_qp, 260 qp_attr, 261 qp_attr_mask, 262 udata); 263 } 264 265 static inline int ib_create_qp_security(struct ib_qp *qp, 266 struct ib_device *dev) 267 { 268 return 0; 269 } 270 271 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec) 272 { 273 } 274 275 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec) 276 { 277 } 278 279 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec) 280 { 281 } 282 283 static inline int ib_open_shared_qp_security(struct ib_qp *qp, 284 struct ib_device *dev) 285 { 286 return 0; 287 } 288 289 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec) 290 { 291 } 292 293 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 294 enum ib_qp_type qp_type) 295 { 296 return 0; 297 } 298 299 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent) 300 { 301 } 302 303 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map, 304 u16 pkey_index) 305 { 306 return 0; 307 } 308 309 static inline void ib_mad_agent_security_change(void) 310 { 311 } 312 #endif 313 314 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index); 315 316 /* RDMA device netlink */ 317 void nldev_init(void); 318 void nldev_exit(void); 319 320 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev, 321 struct ib_pd *pd, 322 struct ib_qp_init_attr *attr, 323 struct ib_udata *udata, 324 struct ib_uqp_object *uobj) 325 { 326 enum ib_qp_type qp_type = attr->qp_type; 327 struct ib_qp *qp; 328 bool is_xrc; 329 330 if (!dev->ops.create_qp) 331 return ERR_PTR(-EOPNOTSUPP); 332 333 qp = dev->ops.create_qp(pd, attr, udata); 334 if (IS_ERR(qp)) 335 return qp; 336 337 qp->device = dev; 338 qp->pd = pd; 339 qp->uobject = uobj; 340 qp->real_qp = qp; 341 342 qp->qp_type = attr->qp_type; 343 qp->rwq_ind_tbl = attr->rwq_ind_tbl; 344 qp->send_cq = attr->send_cq; 345 qp->recv_cq = attr->recv_cq; 346 qp->srq = attr->srq; 347 qp->rwq_ind_tbl = attr->rwq_ind_tbl; 348 qp->event_handler = attr->event_handler; 349 350 atomic_set(&qp->usecnt, 0); 351 spin_lock_init(&qp->mr_lock); 352 INIT_LIST_HEAD(&qp->rdma_mrs); 353 INIT_LIST_HEAD(&qp->sig_mrs); 354 355 /* 356 * We don't track XRC QPs for now, because they don't have PD 357 * and more importantly they are created internaly by driver, 358 * see mlx5 create_dev_resources() as an example. 359 */ 360 is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT; 361 if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) { 362 qp->res.type = RDMA_RESTRACK_QP; 363 if (uobj) 364 rdma_restrack_uadd(&qp->res); 365 else 366 rdma_restrack_kadd(&qp->res); 367 } else 368 qp->res.valid = false; 369 370 return qp; 371 } 372 373 struct rdma_dev_addr; 374 int rdma_resolve_ip_route(struct sockaddr *src_addr, 375 const struct sockaddr *dst_addr, 376 struct rdma_dev_addr *addr); 377 378 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid, 379 const union ib_gid *dgid, 380 u8 *dmac, const struct ib_gid_attr *sgid_attr, 381 int *hoplimit); 382 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr, 383 const struct net_device *dev); 384 385 struct sa_path_rec; 386 int roce_resolve_route_from_path(struct sa_path_rec *rec, 387 const struct ib_gid_attr *attr); 388 389 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr); 390 391 void ib_free_port_attrs(struct ib_core_device *coredev); 392 int ib_setup_port_attrs(struct ib_core_device *coredev); 393 394 int rdma_compatdev_set(u8 enable); 395 396 int ib_port_register_module_stat(struct ib_device *device, u8 port_num, 397 struct kobject *kobj, struct kobj_type *ktype, 398 const char *name); 399 void ib_port_unregister_module_stat(struct kobject *kobj); 400 401 int ib_device_set_netns_put(struct sk_buff *skb, 402 struct ib_device *dev, u32 ns_fd); 403 404 int rdma_nl_net_init(struct rdma_dev_net *rnet); 405 void rdma_nl_net_exit(struct rdma_dev_net *rnet); 406 407 struct rdma_umap_priv { 408 struct vm_area_struct *vma; 409 struct list_head list; 410 struct rdma_user_mmap_entry *entry; 411 }; 412 413 void rdma_umap_priv_init(struct rdma_umap_priv *priv, 414 struct vm_area_struct *vma, 415 struct rdma_user_mmap_entry *entry); 416 417 void ib_cq_pool_init(struct ib_device *dev); 418 void ib_cq_pool_destroy(struct ib_device *dev); 419 420 #endif /* _CORE_PRIV_H */ 421