1 /*
2  * Copyright (c) 2005 Voltaire Inc.  All rights reserved.
3  * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved.
4  * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved.
5  * Copyright (c) 2005-2006 Intel Corporation.  All rights reserved.
6  *
7  * This software is available to you under a choice of one of two
8  * licenses.  You may choose to be licensed under the terms of the GNU
9  * General Public License (GPL) Version 2, available from the file
10  * COPYING in the main directory of this source tree, or the
11  * OpenIB.org BSD license below:
12  *
13  *     Redistribution and use in source and binary forms, with or
14  *     without modification, are permitted provided that the following
15  *     conditions are met:
16  *
17  *      - Redistributions of source code must retain the above
18  *        copyright notice, this list of conditions and the following
19  *        disclaimer.
20  *
21  *      - Redistributions in binary form must reproduce the above
22  *        copyright notice, this list of conditions and the following
23  *        disclaimer in the documentation and/or other materials
24  *        provided with the distribution.
25  *
26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33  * SOFTWARE.
34  */
35 
36 #ifndef _CMA_PRIV_H
37 #define _CMA_PRIV_H
38 
39 enum rdma_cm_state {
40 	RDMA_CM_IDLE,
41 	RDMA_CM_ADDR_QUERY,
42 	RDMA_CM_ADDR_RESOLVED,
43 	RDMA_CM_ROUTE_QUERY,
44 	RDMA_CM_ROUTE_RESOLVED,
45 	RDMA_CM_CONNECT,
46 	RDMA_CM_DISCONNECT,
47 	RDMA_CM_ADDR_BOUND,
48 	RDMA_CM_LISTEN,
49 	RDMA_CM_DEVICE_REMOVAL,
50 	RDMA_CM_DESTROYING
51 };
52 
53 struct rdma_id_private {
54 	struct rdma_cm_id	id;
55 
56 	struct rdma_bind_list	*bind_list;
57 	struct hlist_node	node;
58 	struct list_head	list; /* listen_any_list or cma_device.list */
59 	struct list_head	listen_list; /* per device listens */
60 	struct cma_device	*cma_dev;
61 	struct list_head	mc_list;
62 
63 	int			internal_id;
64 	enum rdma_cm_state	state;
65 	spinlock_t		lock;
66 	struct mutex		qp_mutex;
67 
68 	struct completion	comp;
69 	atomic_t		refcount;
70 	struct mutex		handler_mutex;
71 
72 	int			backlog;
73 	int			timeout_ms;
74 	struct ib_sa_query	*query;
75 	int			query_id;
76 	union {
77 		struct ib_cm_id	*ib;
78 		struct iw_cm_id	*iw;
79 	} cm_id;
80 
81 	u32			seq_num;
82 	u32			qkey;
83 	u32			qp_num;
84 	u32			options;
85 	u8			srq;
86 	u8			tos;
87 	u8			tos_set:1;
88 	u8                      timeout_set:1;
89 	u8			reuseaddr;
90 	u8			afonly;
91 	u8			timeout;
92 	enum ib_gid_type	gid_type;
93 
94 	/*
95 	 * Internal to RDMA/core, don't use in the drivers
96 	 */
97 	struct rdma_restrack_entry     res;
98 };
99 
100 #if IS_ENABLED(CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS)
101 int cma_configfs_init(void);
102 void cma_configfs_exit(void);
103 #else
104 static inline int cma_configfs_init(void)
105 {
106 	return 0;
107 }
108 
109 static inline void cma_configfs_exit(void)
110 {
111 }
112 #endif
113 
114 void cma_ref_dev(struct cma_device *dev);
115 void cma_deref_dev(struct cma_device *dev);
116 typedef bool (*cma_device_filter)(struct ib_device *, void *);
117 struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter,
118 					     void *cookie);
119 int cma_get_default_gid_type(struct cma_device *dev, unsigned int port);
120 int cma_set_default_gid_type(struct cma_device *dev, unsigned int port,
121 			     enum ib_gid_type default_gid_type);
122 int cma_get_default_roce_tos(struct cma_device *dev, unsigned int port);
123 int cma_set_default_roce_tos(struct cma_device *dev, unsigned int port,
124 			     u8 default_roce_tos);
125 struct ib_device *cma_get_ib_dev(struct cma_device *dev);
126 
127 #endif /* _CMA_PRIV_H */
128