1 /*
2 * Copyright (c) 2005 Voltaire Inc. All rights reserved.
3 * Copyright (c) 2005 Intel Corporation. All rights reserved.
4 *
5 * This Software is licensed under one of the following licenses:
6 *
7 * 1) under the terms of the "Common Public License 1.0" a copy of which is
8 * available from the Open Source Initiative, see
9 * http://www.opensource.org/licenses/cpl.php.
10 *
11 * 2) under the terms of the "The BSD License" a copy of which is
12 * available from the Open Source Initiative, see
13 * http://www.opensource.org/licenses/bsd-license.php.
14 *
15 * 3) under the terms of the "GNU General Public License (GPL) Version 2" a
16 * copy of which is available from the Open Source Initiative, see
17 * http://www.opensource.org/licenses/gpl-license.php.
18 *
19 * Licensee has the right to choose one of the above licenses.
20 *
21 * Redistributions of source code must retain the above copyright
22 * notice and one of the license notices.
23 *
24 * Redistributions in binary form must reproduce both the above copyright
25 * notice, one of the license notices in the documentation
26 * and/or other materials provided with the distribution.
27 *
28 * $FreeBSD$
29 *
30 */
31
32 #if !defined(IB_ADDR_H)
33 #define IB_ADDR_H
34
35 #include <sys/param.h>
36 #include <sys/proc.h>
37 #include <sys/condvar.h>
38
39 #include <net/if.h>
40 #include <net/ethernet.h>
41
42 #include <contrib/rdma/ib_verbs.h>
43
44
45 #define MAX_ADDR_LEN ETHER_ADDR_LEN /* XXX doesn't support IB! */
46
47 struct rdma_addr_client {
48 int refcount;
49 struct cv comp;
50 struct mtx lock;
51 };
52
53 /**
54 * rdma_addr_register_client - Register an address client.
55 */
56 void rdma_addr_register_client(struct rdma_addr_client *client);
57
58 /**
59 * rdma_addr_unregister_client - Deregister an address client.
60 * @client: Client object to deregister.
61 */
62 void rdma_addr_unregister_client(struct rdma_addr_client *client);
63
64 struct rdma_dev_addr {
65 unsigned char src_dev_addr[MAX_ADDR_LEN];
66 unsigned char dst_dev_addr[MAX_ADDR_LEN];
67 unsigned char broadcast[MAX_ADDR_LEN];
68 enum rdma_node_type dev_type;
69 };
70
71 /**
72 * rdma_translate_ip - Translate a local IP address to an RDMA hardware
73 * address.
74 */
75 int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr);
76
77 /**
78 * rdma_resolve_ip - Resolve source and destination IP addresses to
79 * RDMA hardware addresses.
80 * @client: Address client associated with request.
81 * @src_addr: An optional source address to use in the resolution. If a
82 * source address is not provided, a usable address will be returned via
83 * the callback.
84 * @dst_addr: The destination address to resolve.
85 * @addr: A reference to a data location that will receive the resolved
86 * addresses. The data location must remain valid until the callback has
87 * been invoked.
88 * @timeout_ms: Amount of time to wait for the address resolution to complete.
89 * @callback: Call invoked once address resolution has completed, timed out,
90 * or been canceled. A status of 0 indicates success.
91 * @context: User-specified context associated with the call.
92 */
93 int rdma_resolve_ip(struct rdma_addr_client *client,
94 struct sockaddr *src_addr, struct sockaddr *dst_addr,
95 struct rdma_dev_addr *addr, int timeout_ms,
96 void (*callback)(int status, struct sockaddr *src_addr,
97 struct rdma_dev_addr *addr, void *context),
98 void *context);
99
100 void rdma_addr_cancel(struct rdma_dev_addr *addr);
101
102 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct ifnet *dev,
103 const unsigned char *dst_dev_addr);
104
105 static inline int ip_addr_size(struct sockaddr *addr)
106 {
107 return addr->sa_family == AF_INET6 ?
108 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
109 }
110
111 static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
112 {
113 return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
114 }
115
116 static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
117 {
118 dev_addr->broadcast[8] = pkey >> 8;
119 dev_addr->broadcast[9] = (unsigned char) pkey;
120 }
121
122 static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
123 union ib_gid *gid)
124 {
125 memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
126 }
127
128 static inline void ib_addr_get_sgid(struct rdma_dev_addr *dev_addr,
129 union ib_gid *gid)
130 {
131 memcpy(gid, dev_addr->src_dev_addr + 4, sizeof *gid);
132 }
133
134 static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr,
135 union ib_gid *gid)
136 {
137 memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid);
138 }
139
140 static inline void ib_addr_get_dgid(struct rdma_dev_addr *dev_addr,
141 union ib_gid *gid)
142 {
143 memcpy(gid, dev_addr->dst_dev_addr + 4, sizeof *gid);
144 }
145
146 static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr,
147 union ib_gid *gid)
148 {
149 memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid);
150 }
151
152 static inline void iw_addr_get_sgid(struct rdma_dev_addr *dev_addr,
153 union ib_gid *gid)
154 {
155 memcpy(gid, dev_addr->src_dev_addr, sizeof *gid);
156 }
157
158 static inline void iw_addr_get_dgid(struct rdma_dev_addr *dev_addr,
159 union ib_gid *gid)
160 {
161 memcpy(gid, dev_addr->dst_dev_addr, sizeof *gid);
162 }
163
164 #endif /* IB_ADDR_H */
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