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, u32 port, 87 struct net_device *idev, void *cookie); 88 89 typedef bool (*roce_netdev_filter)(struct ib_device *device, u32 port, 90 struct net_device *idev, void *cookie); 91 92 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev, 93 u32 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 u32 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, u32 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, u32 port, 137 union ib_gid *gid, struct ib_gid_attr *attr); 138 139 int ib_cache_gid_del(struct ib_device *ib_dev, u32 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, u32 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, u32 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 u32 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 u32 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 u32 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, u32 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 */ 408