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7025fcd3 SH |
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 | */ | |
29 | ||
30 | #if !defined(IB_ADDR_H) | |
31 | #define IB_ADDR_H | |
32 | ||
33 | #include <linux/in.h> | |
34 | #include <linux/in6.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/socket.h> | |
37 | #include <rdma/ib_verbs.h> | |
38 | ||
39 | struct rdma_dev_addr { | |
40 | unsigned char src_dev_addr[MAX_ADDR_LEN]; | |
41 | unsigned char dst_dev_addr[MAX_ADDR_LEN]; | |
42 | unsigned char broadcast[MAX_ADDR_LEN]; | |
43 | enum ib_node_type dev_type; | |
44 | }; | |
45 | ||
46 | /** | |
47 | * rdma_translate_ip - Translate a local IP address to an RDMA hardware | |
48 | * address. | |
49 | */ | |
50 | int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); | |
51 | ||
52 | /** | |
53 | * rdma_resolve_ip - Resolve source and destination IP addresses to | |
54 | * RDMA hardware addresses. | |
55 | * @src_addr: An optional source address to use in the resolution. If a | |
56 | * source address is not provided, a usable address will be returned via | |
57 | * the callback. | |
58 | * @dst_addr: The destination address to resolve. | |
59 | * @addr: A reference to a data location that will receive the resolved | |
60 | * addresses. The data location must remain valid until the callback has | |
61 | * been invoked. | |
62 | * @timeout_ms: Amount of time to wait for the address resolution to complete. | |
63 | * @callback: Call invoked once address resolution has completed, timed out, | |
64 | * or been canceled. A status of 0 indicates success. | |
65 | * @context: User-specified context associated with the call. | |
66 | */ | |
67 | int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr, | |
68 | struct rdma_dev_addr *addr, int timeout_ms, | |
69 | void (*callback)(int status, struct sockaddr *src_addr, | |
70 | struct rdma_dev_addr *addr, void *context), | |
71 | void *context); | |
72 | ||
73 | void rdma_addr_cancel(struct rdma_dev_addr *addr); | |
74 | ||
75 | static inline int ip_addr_size(struct sockaddr *addr) | |
76 | { | |
77 | return addr->sa_family == AF_INET6 ? | |
78 | sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); | |
79 | } | |
80 | ||
81 | static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) | |
82 | { | |
83 | return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9]; | |
84 | } | |
85 | ||
86 | static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey) | |
87 | { | |
88 | dev_addr->broadcast[8] = pkey >> 8; | |
89 | dev_addr->broadcast[9] = (unsigned char) pkey; | |
90 | } | |
91 | ||
92 | static inline union ib_gid *ib_addr_get_sgid(struct rdma_dev_addr *dev_addr) | |
93 | { | |
94 | return (union ib_gid *) (dev_addr->src_dev_addr + 4); | |
95 | } | |
96 | ||
97 | static inline void ib_addr_set_sgid(struct rdma_dev_addr *dev_addr, | |
98 | union ib_gid *gid) | |
99 | { | |
100 | memcpy(dev_addr->src_dev_addr + 4, gid, sizeof *gid); | |
101 | } | |
102 | ||
103 | static inline union ib_gid *ib_addr_get_dgid(struct rdma_dev_addr *dev_addr) | |
104 | { | |
105 | return (union ib_gid *) (dev_addr->dst_dev_addr + 4); | |
106 | } | |
107 | ||
108 | static inline void ib_addr_set_dgid(struct rdma_dev_addr *dev_addr, | |
109 | union ib_gid *gid) | |
110 | { | |
111 | memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid); | |
112 | } | |
113 | ||
114 | #endif /* IB_ADDR_H */ |