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 8192 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 extern const struct attribute_group ib_dev_attr_group; 58 extern bool ib_devices_shared_netns; 59 60 int ib_device_register_sysfs(struct ib_device *device); 61 void ib_device_unregister_sysfs(struct ib_device *device); 62 int ib_device_rename(struct ib_device *ibdev, const char *name); 63 int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim); 64 65 typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port, 66 struct net_device *idev, void *cookie); 67 68 typedef bool (*roce_netdev_filter)(struct ib_device *device, u8 port, 69 struct net_device *idev, void *cookie); 70 71 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev, 72 unsigned int port); 73 74 void ib_enum_roce_netdev(struct ib_device *ib_dev, 75 roce_netdev_filter filter, 76 void *filter_cookie, 77 roce_netdev_callback cb, 78 void *cookie); 79 void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 80 void *filter_cookie, 81 roce_netdev_callback cb, 82 void *cookie); 83 84 typedef int (*nldev_callback)(struct ib_device *device, 85 struct sk_buff *skb, 86 struct netlink_callback *cb, 87 unsigned int idx); 88 89 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, 90 struct netlink_callback *cb); 91 92 struct ib_client_nl_info { 93 struct sk_buff *nl_msg; 94 struct device *cdev; 95 unsigned int port; 96 u64 abi; 97 }; 98 int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name, 99 struct ib_client_nl_info *res); 100 101 enum ib_cache_gid_default_mode { 102 IB_CACHE_GID_DEFAULT_MODE_SET, 103 IB_CACHE_GID_DEFAULT_MODE_DELETE 104 }; 105 106 int ib_cache_gid_parse_type_str(const char *buf); 107 108 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type); 109 110 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port, 111 struct net_device *ndev, 112 unsigned long gid_type_mask, 113 enum ib_cache_gid_default_mode mode); 114 115 int ib_cache_gid_add(struct ib_device *ib_dev, u8 port, 116 union ib_gid *gid, struct ib_gid_attr *attr); 117 118 int ib_cache_gid_del(struct ib_device *ib_dev, u8 port, 119 union ib_gid *gid, struct ib_gid_attr *attr); 120 121 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port, 122 struct net_device *ndev); 123 124 int roce_gid_mgmt_init(void); 125 void roce_gid_mgmt_cleanup(void); 126 127 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port); 128 129 int ib_cache_setup_one(struct ib_device *device); 130 void ib_cache_cleanup_one(struct ib_device *device); 131 void ib_cache_release_one(struct ib_device *device); 132 133 #ifdef CONFIG_CGROUP_RDMA 134 void ib_device_register_rdmacg(struct ib_device *device); 135 void ib_device_unregister_rdmacg(struct ib_device *device); 136 137 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 138 struct ib_device *device, 139 enum rdmacg_resource_type resource_index); 140 141 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 142 struct ib_device *device, 143 enum rdmacg_resource_type resource_index); 144 #else 145 static inline void ib_device_register_rdmacg(struct ib_device *device) 146 { 147 } 148 149 static inline void ib_device_unregister_rdmacg(struct ib_device *device) 150 { 151 } 152 153 static inline int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj, 154 struct ib_device *device, 155 enum rdmacg_resource_type resource_index) 156 { 157 return 0; 158 } 159 160 static inline void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj, 161 struct ib_device *device, 162 enum rdmacg_resource_type resource_index) 163 { 164 } 165 #endif 166 167 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev, 168 struct net_device *upper) 169 { 170 return netdev_has_upper_dev_all_rcu(dev, upper); 171 } 172 173 int addr_init(void); 174 void addr_cleanup(void); 175 176 int ib_mad_init(void); 177 void ib_mad_cleanup(void); 178 179 int ib_sa_init(void); 180 void ib_sa_cleanup(void); 181 182 int rdma_nl_init(void); 183 void rdma_nl_exit(void); 184 185 int ib_nl_handle_resolve_resp(struct sk_buff *skb, 186 struct nlmsghdr *nlh, 187 struct netlink_ext_ack *extack); 188 int ib_nl_handle_set_timeout(struct sk_buff *skb, 189 struct nlmsghdr *nlh, 190 struct netlink_ext_ack *extack); 191 int ib_nl_handle_ip_res_resp(struct sk_buff *skb, 192 struct nlmsghdr *nlh, 193 struct netlink_ext_ack *extack); 194 195 int ib_get_cached_subnet_prefix(struct ib_device *device, 196 u8 port_num, 197 u64 *sn_pfx); 198 199 #ifdef CONFIG_SECURITY_INFINIBAND 200 void ib_security_release_port_pkey_list(struct ib_device *device); 201 202 void ib_security_cache_change(struct ib_device *device, 203 u8 port_num, 204 u64 subnet_prefix); 205 206 int ib_security_modify_qp(struct ib_qp *qp, 207 struct ib_qp_attr *qp_attr, 208 int qp_attr_mask, 209 struct ib_udata *udata); 210 211 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev); 212 void ib_destroy_qp_security_begin(struct ib_qp_security *sec); 213 void ib_destroy_qp_security_abort(struct ib_qp_security *sec); 214 void ib_destroy_qp_security_end(struct ib_qp_security *sec); 215 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev); 216 void ib_close_shared_qp_security(struct ib_qp_security *sec); 217 int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 218 enum ib_qp_type qp_type); 219 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent); 220 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index); 221 void ib_mad_agent_security_change(void); 222 #else 223 static inline void ib_security_release_port_pkey_list(struct ib_device *device) 224 { 225 } 226 227 static inline void ib_security_cache_change(struct ib_device *device, 228 u8 port_num, 229 u64 subnet_prefix) 230 { 231 } 232 233 static inline int ib_security_modify_qp(struct ib_qp *qp, 234 struct ib_qp_attr *qp_attr, 235 int qp_attr_mask, 236 struct ib_udata *udata) 237 { 238 return qp->device->ops.modify_qp(qp->real_qp, 239 qp_attr, 240 qp_attr_mask, 241 udata); 242 } 243 244 static inline int ib_create_qp_security(struct ib_qp *qp, 245 struct ib_device *dev) 246 { 247 return 0; 248 } 249 250 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec) 251 { 252 } 253 254 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec) 255 { 256 } 257 258 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec) 259 { 260 } 261 262 static inline int ib_open_shared_qp_security(struct ib_qp *qp, 263 struct ib_device *dev) 264 { 265 return 0; 266 } 267 268 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec) 269 { 270 } 271 272 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent, 273 enum ib_qp_type qp_type) 274 { 275 return 0; 276 } 277 278 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent) 279 { 280 } 281 282 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map, 283 u16 pkey_index) 284 { 285 return 0; 286 } 287 288 static inline void ib_mad_agent_security_change(void) 289 { 290 } 291 #endif 292 293 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index); 294 295 /* RDMA device netlink */ 296 void nldev_init(void); 297 void nldev_exit(void); 298 299 static inline struct ib_qp *_ib_create_qp(struct ib_device *dev, 300 struct ib_pd *pd, 301 struct ib_qp_init_attr *attr, 302 struct ib_udata *udata, 303 struct ib_uobject *uobj) 304 { 305 enum ib_qp_type qp_type = attr->qp_type; 306 struct ib_qp *qp; 307 bool is_xrc; 308 309 if (!dev->ops.create_qp) 310 return ERR_PTR(-EOPNOTSUPP); 311 312 qp = dev->ops.create_qp(pd, attr, udata); 313 if (IS_ERR(qp)) 314 return qp; 315 316 qp->device = dev; 317 qp->pd = pd; 318 qp->uobject = uobj; 319 qp->real_qp = qp; 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 is_xrc = qp_type == IB_QPT_XRC_INI || qp_type == IB_QPT_XRC_TGT; 326 if ((qp_type < IB_QPT_MAX && !is_xrc) || qp_type == IB_QPT_DRIVER) { 327 qp->res.type = RDMA_RESTRACK_QP; 328 if (uobj) 329 rdma_restrack_uadd(&qp->res); 330 else 331 rdma_restrack_kadd(&qp->res); 332 } else 333 qp->res.valid = false; 334 335 return qp; 336 } 337 338 struct rdma_dev_addr; 339 int rdma_resolve_ip_route(struct sockaddr *src_addr, 340 const struct sockaddr *dst_addr, 341 struct rdma_dev_addr *addr); 342 343 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid, 344 const union ib_gid *dgid, 345 u8 *dmac, const struct ib_gid_attr *sgid_attr, 346 int *hoplimit); 347 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr, 348 const struct net_device *dev); 349 350 struct sa_path_rec; 351 int roce_resolve_route_from_path(struct sa_path_rec *rec, 352 const struct ib_gid_attr *attr); 353 354 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr); 355 356 void ib_free_port_attrs(struct ib_core_device *coredev); 357 int ib_setup_port_attrs(struct ib_core_device *coredev); 358 359 int rdma_compatdev_set(u8 enable); 360 361 int ib_port_register_module_stat(struct ib_device *device, u8 port_num, 362 struct kobject *kobj, struct kobj_type *ktype, 363 const char *name); 364 void ib_port_unregister_module_stat(struct kobject *kobj); 365 366 int ib_device_set_netns_put(struct sk_buff *skb, 367 struct ib_device *dev, u32 ns_fd); 368 #endif /* _CORE_PRIV_H */ 369