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 
rdma_net_to_dev_net(struct net * net)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_rename(struct ib_device *ibdev, const char *name);
82 int ib_device_set_dim(struct ib_device *ibdev, u8 use_dim);
83 
84 typedef void (*roce_netdev_callback)(struct ib_device *device, u32 port,
85 	      struct net_device *idev, void *cookie);
86 
87 typedef bool (*roce_netdev_filter)(struct ib_device *device, u32 port,
88 				   struct net_device *idev, void *cookie);
89 
90 struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
91 					u32 port);
92 
93 void ib_enum_roce_netdev(struct ib_device *ib_dev,
94 			 roce_netdev_filter filter,
95 			 void *filter_cookie,
96 			 roce_netdev_callback cb,
97 			 void *cookie);
98 void ib_enum_all_roce_netdevs(roce_netdev_filter filter,
99 			      void *filter_cookie,
100 			      roce_netdev_callback cb,
101 			      void *cookie);
102 
103 typedef int (*nldev_callback)(struct ib_device *device,
104 			      struct sk_buff *skb,
105 			      struct netlink_callback *cb,
106 			      unsigned int idx);
107 
108 int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
109 		     struct netlink_callback *cb);
110 
111 struct ib_client_nl_info {
112 	struct sk_buff *nl_msg;
113 	struct device *cdev;
114 	u32 port;
115 	u64 abi;
116 };
117 int ib_get_client_nl_info(struct ib_device *ibdev, const char *client_name,
118 			  struct ib_client_nl_info *res);
119 
120 enum ib_cache_gid_default_mode {
121 	IB_CACHE_GID_DEFAULT_MODE_SET,
122 	IB_CACHE_GID_DEFAULT_MODE_DELETE
123 };
124 
125 int ib_cache_gid_parse_type_str(const char *buf);
126 
127 const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
128 
129 void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u32 port,
130 				  struct net_device *ndev,
131 				  unsigned long gid_type_mask,
132 				  enum ib_cache_gid_default_mode mode);
133 
134 int ib_cache_gid_add(struct ib_device *ib_dev, u32 port,
135 		     union ib_gid *gid, struct ib_gid_attr *attr);
136 
137 int ib_cache_gid_del(struct ib_device *ib_dev, u32 port,
138 		     union ib_gid *gid, struct ib_gid_attr *attr);
139 
140 int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u32 port,
141 				     struct net_device *ndev);
142 
143 int roce_gid_mgmt_init(void);
144 void roce_gid_mgmt_cleanup(void);
145 
146 unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u32 port);
147 
148 int ib_cache_setup_one(struct ib_device *device);
149 void ib_cache_cleanup_one(struct ib_device *device);
150 void ib_cache_release_one(struct ib_device *device);
151 void ib_dispatch_event_clients(struct ib_event *event);
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
ib_device_register_rdmacg(struct ib_device * device)165 static inline void ib_device_register_rdmacg(struct ib_device *device)
166 {
167 }
168 
ib_device_unregister_rdmacg(struct ib_device * device)169 static inline void ib_device_unregister_rdmacg(struct ib_device *device)
170 {
171 }
172 
ib_rdmacg_try_charge(struct ib_rdmacg_object * cg_obj,struct ib_device * device,enum rdmacg_resource_type resource_index)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 
ib_rdmacg_uncharge(struct ib_rdmacg_object * cg_obj,struct ib_device * device,enum rdmacg_resource_type resource_index)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 
rdma_is_upper_dev_rcu(struct net_device * dev,struct net_device * upper)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_init(void);
203 void rdma_nl_exit(void);
204 
205 int ib_nl_handle_resolve_resp(struct sk_buff *skb,
206 			      struct nlmsghdr *nlh,
207 			      struct netlink_ext_ack *extack);
208 int ib_nl_handle_set_timeout(struct sk_buff *skb,
209 			     struct nlmsghdr *nlh,
210 			     struct netlink_ext_ack *extack);
211 int ib_nl_handle_ip_res_resp(struct sk_buff *skb,
212 			     struct nlmsghdr *nlh,
213 			     struct netlink_ext_ack *extack);
214 
215 void ib_get_cached_subnet_prefix(struct ib_device *device,
216 				u32 port_num,
217 				u64 *sn_pfx);
218 
219 #ifdef CONFIG_SECURITY_INFINIBAND
220 void ib_security_release_port_pkey_list(struct ib_device *device);
221 
222 void ib_security_cache_change(struct ib_device *device,
223 			      u32 port_num,
224 			      u64 subnet_prefix);
225 
226 int ib_security_modify_qp(struct ib_qp *qp,
227 			  struct ib_qp_attr *qp_attr,
228 			  int qp_attr_mask,
229 			  struct ib_udata *udata);
230 
231 int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev);
232 void ib_destroy_qp_security_begin(struct ib_qp_security *sec);
233 void ib_destroy_qp_security_abort(struct ib_qp_security *sec);
234 void ib_destroy_qp_security_end(struct ib_qp_security *sec);
235 int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev);
236 void ib_close_shared_qp_security(struct ib_qp_security *sec);
237 int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
238 				enum ib_qp_type qp_type);
239 void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent);
240 int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index);
241 void ib_mad_agent_security_change(void);
242 #else
ib_security_release_port_pkey_list(struct ib_device * device)243 static inline void ib_security_release_port_pkey_list(struct ib_device *device)
244 {
245 }
246 
ib_security_cache_change(struct ib_device * device,u32 port_num,u64 subnet_prefix)247 static inline void ib_security_cache_change(struct ib_device *device,
248 					    u32 port_num,
249 					    u64 subnet_prefix)
250 {
251 }
252 
ib_security_modify_qp(struct ib_qp * qp,struct ib_qp_attr * qp_attr,int qp_attr_mask,struct ib_udata * udata)253 static inline int ib_security_modify_qp(struct ib_qp *qp,
254 					struct ib_qp_attr *qp_attr,
255 					int qp_attr_mask,
256 					struct ib_udata *udata)
257 {
258 	return qp->device->ops.modify_qp(qp->real_qp,
259 					 qp_attr,
260 					 qp_attr_mask,
261 					 udata);
262 }
263 
ib_create_qp_security(struct ib_qp * qp,struct ib_device * dev)264 static inline int ib_create_qp_security(struct ib_qp *qp,
265 					struct ib_device *dev)
266 {
267 	return 0;
268 }
269 
ib_destroy_qp_security_begin(struct ib_qp_security * sec)270 static inline void ib_destroy_qp_security_begin(struct ib_qp_security *sec)
271 {
272 }
273 
ib_destroy_qp_security_abort(struct ib_qp_security * sec)274 static inline void ib_destroy_qp_security_abort(struct ib_qp_security *sec)
275 {
276 }
277 
ib_destroy_qp_security_end(struct ib_qp_security * sec)278 static inline void ib_destroy_qp_security_end(struct ib_qp_security *sec)
279 {
280 }
281 
ib_open_shared_qp_security(struct ib_qp * qp,struct ib_device * dev)282 static inline int ib_open_shared_qp_security(struct ib_qp *qp,
283 					     struct ib_device *dev)
284 {
285 	return 0;
286 }
287 
ib_close_shared_qp_security(struct ib_qp_security * sec)288 static inline void ib_close_shared_qp_security(struct ib_qp_security *sec)
289 {
290 }
291 
ib_mad_agent_security_setup(struct ib_mad_agent * agent,enum ib_qp_type qp_type)292 static inline int ib_mad_agent_security_setup(struct ib_mad_agent *agent,
293 					      enum ib_qp_type qp_type)
294 {
295 	return 0;
296 }
297 
ib_mad_agent_security_cleanup(struct ib_mad_agent * agent)298 static inline void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent)
299 {
300 }
301 
ib_mad_enforce_security(struct ib_mad_agent_private * map,u16 pkey_index)302 static inline int ib_mad_enforce_security(struct ib_mad_agent_private *map,
303 					  u16 pkey_index)
304 {
305 	return 0;
306 }
307 
ib_mad_agent_security_change(void)308 static inline void ib_mad_agent_security_change(void)
309 {
310 }
311 #endif
312 
313 struct ib_device *ib_device_get_by_index(const struct net *net, u32 index);
314 
315 /* RDMA device netlink */
316 void nldev_init(void);
317 void nldev_exit(void);
318 
319 struct ib_qp *ib_create_qp_user(struct ib_device *dev, struct ib_pd *pd,
320 				struct ib_qp_init_attr *attr,
321 				struct ib_udata *udata,
322 				struct ib_uqp_object *uobj, const char *caller);
323 
324 void ib_qp_usecnt_inc(struct ib_qp *qp);
325 void ib_qp_usecnt_dec(struct ib_qp *qp);
326 
327 struct rdma_dev_addr;
328 int rdma_resolve_ip_route(struct sockaddr *src_addr,
329 			  const struct sockaddr *dst_addr,
330 			  struct rdma_dev_addr *addr);
331 
332 int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
333 				 const union ib_gid *dgid,
334 				 u8 *dmac, const struct ib_gid_attr *sgid_attr,
335 				 int *hoplimit);
336 void rdma_copy_src_l2_addr(struct rdma_dev_addr *dev_addr,
337 			   const struct net_device *dev);
338 
339 struct sa_path_rec;
340 int roce_resolve_route_from_path(struct sa_path_rec *rec,
341 				 const struct ib_gid_attr *attr);
342 
343 struct net_device *rdma_read_gid_attr_ndev_rcu(const struct ib_gid_attr *attr);
344 
345 void ib_free_port_attrs(struct ib_core_device *coredev);
346 int ib_setup_port_attrs(struct ib_core_device *coredev);
347 struct rdma_hw_stats *ib_get_hw_stats_port(struct ib_device *ibdev, u32 port_num);
348 void ib_device_release_hw_stats(struct hw_stats_device_data *data);
349 int ib_setup_device_attrs(struct ib_device *ibdev);
350 
351 int rdma_compatdev_set(u8 enable);
352 
353 int ib_port_register_client_groups(struct ib_device *ibdev, u32 port_num,
354 				   const struct attribute_group **groups);
355 void ib_port_unregister_client_groups(struct ib_device *ibdev, u32 port_num,
356 				     const struct attribute_group **groups);
357 
358 int ib_device_set_netns_put(struct sk_buff *skb,
359 			    struct ib_device *dev, u32 ns_fd);
360 
361 int rdma_nl_net_init(struct rdma_dev_net *rnet);
362 void rdma_nl_net_exit(struct rdma_dev_net *rnet);
363 
364 struct rdma_umap_priv {
365 	struct vm_area_struct *vma;
366 	struct list_head list;
367 	struct rdma_user_mmap_entry *entry;
368 };
369 
370 void rdma_umap_priv_init(struct rdma_umap_priv *priv,
371 			 struct vm_area_struct *vma,
372 			 struct rdma_user_mmap_entry *entry);
373 
374 void ib_cq_pool_cleanup(struct ib_device *dev);
375 
376 #endif /* _CORE_PRIV_H */
377