1/*
2 * Copyright (c) 2013, Cisco Systems, Inc. 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 * 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
34#ifndef USNIC_CMN_UTIL_H
35#define USNIC_CMN_UTIL_H
36
37static inline void
38usnic_mac_to_gid(const char *const mac, char *raw_gid)
39{
40	raw_gid[0] = 0xfe;
41	raw_gid[1] = 0x80;
42	memset(&raw_gid[2], 0, 6);
43	raw_gid[8] = mac[0]^2;
44	raw_gid[9] = mac[1];
45	raw_gid[10] = mac[2];
46	raw_gid[11] = 0xff;
47	raw_gid[12] = 0xfe;
48	raw_gid[13] = mac[3];
49	raw_gid[14] = mac[4];
50	raw_gid[15] = mac[5];
51}
52
53static inline void
54usnic_mac_ip_to_gid(const char *const mac, const __be32 inaddr, char *raw_gid)
55{
56	raw_gid[0] = 0xfe;
57	raw_gid[1] = 0x80;
58	memset(&raw_gid[2], 0, 2);
59	memcpy(&raw_gid[4], &inaddr, 4);
60	raw_gid[8] = mac[0]^2;
61	raw_gid[9] = mac[1];
62	raw_gid[10] = mac[2];
63	raw_gid[11] = 0xff;
64	raw_gid[12] = 0xfe;
65	raw_gid[13] = mac[3];
66	raw_gid[14] = mac[4];
67	raw_gid[15] = mac[5];
68}
69
70static inline void
71usnic_write_gid_if_id_from_mac(char *mac, char *raw_gid)
72{
73	raw_gid[8] = mac[0]^2;
74	raw_gid[9] = mac[1];
75	raw_gid[10] = mac[2];
76	raw_gid[11] = 0xff;
77	raw_gid[12] = 0xfe;
78	raw_gid[13] = mac[3];
79	raw_gid[14] = mac[4];
80	raw_gid[15] = mac[5];
81}
82
83#endif /* USNIC_COMMON_UTIL_H */
84