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); 152 153 #ifdef CONFIG_CGROUP_RDMA 154 void ib_device_register_rdmacg(struct ib_device *device); 155 void ib_device_unregister_rdmacg(struct ib_device *device); 156 157 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 158 struct ib_device *device, 159 enum rdmacg_resource_type resource_index); 160 161 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 162 struct ib_device *device, 163 enum rdmacg_resource_type resource_index); 164 #else 165 static inline void ib_device_register_rdmacg(struct ib_device *device) 166 { 167 } 168 169 static inline void ib_device_unregister_rdmacg(struct ib_device *device) 170 { 171 } 172 173 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 174 struct ib_device *device, 175 enum rdmacg_resource_type resource_index) 176 { 177 return 0; 178 } 179 180 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 181 struct ib_device *device, 182 enum rdmacg_resource_type resource_index) 183 { 184 } 185 #endif 186 187 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev, 188 struct net_device *upper) 189 { 190 return netdev_has_upper_dev_all_rcu(dev, upper); 191 } 192 193 int addr_init(void); 194 void addr_cleanup(void); 195 196 int ib_mad_init(void); 197 void ib_mad_cleanup(void); 198 199 int ib_sa_init(void); 200 void ib_sa_cleanup(void); 201 202 void rdma_nl_exit(void); 203 204 int ib_nl_handle_resolve_resp(struct sk_buff *skb, 205 struct nlmsghdr *nlh, 206 struct netlink_ext_ack *extack); 207 int ib_nl_handle_set_timeout(struct sk_buff *skb, 208 struct nlmsghdr *nlh, 209 struct netlink_ext_ack *extack); 210 int ib_nl_handle_ip_res_resp(struct sk_buff *skb, 211 struct nlmsghdr *nlh, 212 struct netlink_ext_ack *extack); 213 214 int ib_get_cached_subnet_prefix(struct ib_device *device, 215 u8 port_num, 216 u64 *sn_pfx); 217 218 #ifdef CONFIG_SECURITY_INFINIBAND 219 void ib_security_release_port_pkey_list(struct ib_device *device); 220 221 void ib_security_cache_change(struct ib_device *device, 222 u8 port_num, 223 u64 subnet_prefix); 224 225 int ib_security_modify_qp(struct ib_qp *qp, 226 struct ib_qp_attr *qp_attr, 227 int qp_attr_mask, 228 struct ib_udata *udata); 229 230 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev); 231 void ib_destroy_qp_security_begin(struct ib_qp_security *sec); 232 void ib_destroy_qp_security_abort(struct ib_qp_security *sec); 233 void ib_destroy_qp_security_end(struct ib_qp_security *sec); 234 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev); 235 void ib_close_shared_qp_security(struct ib_qp_security *sec); 236 int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 237 enum ib_qp_type qp_type); 238 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent); 239 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index); 240 void ib_mad_agent_security_change(void); 241 #else 242 static inline void ib_security_release_port_pkey_list(struct ib_device *device) 243 { 244 } 245 246 static inline void ib_security_cache_change(struct ib_device *device, 247 u8 port_num, 248 u64 subnet_prefix) 249 { 250 } 251 252 static inline int ib_security_modify_qp(struct ib_qp *qp, 253 struct ib_qp_attr *qp_attr, 254 int qp_attr_mask, 255 struct ib_udata *udata) 256 { 257 return qp->device->ops.modify_qp(qp->real_qp, 258 qp_attr, 259 qp_attr_mask, 260 udata); 261 } 262 263 static inline int ib_create_qp_security(struct ib_qp *qp, 264 struct ib_device *dev) 265 { 266 return 0; 267 } 268 269 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec) 270 { 271 } 272 273 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec) 274 { 275 } 276 277 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec) 278 { 279 } 280 281 static inline int ib_open_shared_qp_security(struct ib_qp *qp, 282 struct ib_device *dev) 283 { 284 return 0; 285 } 286 287 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec) 288 { 289 } 290 291 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 292 enum ib_qp_type qp_type) 293 { 294 return 0; 295 } 296 297 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent) 298 { 299 } 300 301 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map, 302 u16 pkey_index) 303 { 304 return 0; 305 } 306 307 static inline void ib_mad_agent_security_change(void) 308 { 309 } 310 #endif 311 312 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index); 313 314 /* RDMA device netlink */ 315 void nldev_init(void); 316 void nldev_exit(void); 317 318 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev, 319 struct ib_pd *pd, 320 struct ib_qp_init_attr *attr, 321 struct ib_udata *udata, 322 struct ib_uobject *uobj) 323 { 324 enum ib_qp_type qp_type = attr->qp_type; 325 struct ib_qp *qp; 326 bool is_xrc; 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 * We don't track XRC QPs for now, because they don't have PD 341 * and more importantly they are created internaly by driver, 342 * see mlx5 create_dev_resources() as an example. 343 */ 344 is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT; 345 if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) { 346 qp->res.type = RDMA_RESTRACK_QP; 347 if (uobj) 348 rdma_restrack_uadd(&qp->res); 349 else 350 rdma_restrack_kadd(&qp->res); 351 } else 352 qp->res.valid = false; 353 354 return qp; 355 } 356 357 struct rdma_dev_addr; 358 int rdma_resolve_ip_route(struct sockaddr *src_addr, 359 const struct sockaddr *dst_addr, 360 struct rdma_dev_addr *addr); 361 362 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid, 363 const union ib_gid *dgid, 364 u8 *dmac, const struct ib_gid_attr *sgid_attr, 365 int *hoplimit); 366 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr, 367 const struct net_device *dev); 368 369 struct sa_path_rec; 370 int roce_resolve_route_from_path(struct sa_path_rec *rec, 371 const struct ib_gid_attr *attr); 372 373 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr); 374 375 void ib_free_port_attrs(struct ib_core_device *coredev); 376 int ib_setup_port_attrs(struct ib_core_device *coredev); 377 378 int rdma_compatdev_set(u8 enable); 379 380 int ib_port_register_module_stat(struct ib_device *device, u8 port_num, 381 struct kobject *kobj, struct kobj_type *ktype, 382 const char *name); 383 void ib_port_unregister_module_stat(struct kobject *kobj); 384 385 int ib_device_set_netns_put(struct sk_buff *skb, 386 struct ib_device *dev, u32 ns_fd); 387 388 int rdma_nl_net_init(struct rdma_dev_net *rnet); 389 void rdma_nl_net_exit(struct rdma_dev_net *rnet); 390 #endif /* _CORE_PRIV_H */ 391