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 	union {
59 		struct list_head device_item; /* On cma_device->id_list */
60 		struct list_head listen_any_item; /* On listen_any_list */
61 	};
62 	union {
63 		/* On rdma_id_private->listen_list */
64 		struct list_head listen_item;
65 		struct list_head listen_list;
66 	};
67 	struct cma_device	*cma_dev;
68 	struct list_head	mc_list;
69 
70 	int			internal_id;
71 	enum rdma_cm_state	state;
72 	spinlock_t		lock;
73 	struct mutex		qp_mutex;
74 
75 	struct completion	comp;
76 	refcount_t refcount;
77 	struct mutex		handler_mutex;
78 
79 	int			backlog;
80 	int			timeout_ms;
81 	struct ib_sa_query	*query;
82 	int			query_id;
83 	union {
84 		struct ib_cm_id	*ib;
85 		struct iw_cm_id	*iw;
86 	} cm_id;
87 
88 	u32			seq_num;
89 	u32			qkey;
90 	u32			qp_num;
91 	u32			options;
92 	u8			srq;
93 	u8			tos;
94 	u8			tos_set:1;
95 	u8                      timeout_set:1;
96 	u8			min_rnr_timer_set:1;
97 	u8			reuseaddr;
98 	u8			afonly;
99 	u8			timeout;
100 	u8			min_rnr_timer;
101 	u8 used_resolve_ip;
102 	enum ib_gid_type	gid_type;
103 
104 	/*
105 	 * Internal to RDMA/core, don't use in the drivers
106 	 */
107 	struct rdma_restrack_entry     res;
108 	struct rdma_ucm_ece ece;
109 };
110 
111 #if IS_ENABLED(CONFIG_INFINIBAND_ADDR_TRANS_CONFIGFS)
112 int cma_configfs_init(void);
113 void cma_configfs_exit(void);
114 #else
115 static inline int cma_configfs_init(void)
116 {
117 	return 0;
118 }
119 
120 static inline void cma_configfs_exit(void)
121 {
122 }
123 #endif
124 
125 void cma_dev_get(struct cma_device *dev);
126 void cma_dev_put(struct cma_device *dev);
127 typedef bool (*cma_device_filter)(struct ib_device *, void *);
128 struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter,
129 					     void *cookie);
130 int cma_get_default_gid_type(struct cma_device *dev, u32 port);
131 int cma_set_default_gid_type(struct cma_device *dev, u32 port,
132 			     enum ib_gid_type default_gid_type);
133 int cma_get_default_roce_tos(struct cma_device *dev, u32 port);
134 int cma_set_default_roce_tos(struct cma_device *dev, u32 port,
135 			     u8 default_roce_tos);
136 struct ib_device *cma_get_ib_dev(struct cma_device *dev);
137 
138 #endif /* _CMA_PRIV_H */
139