1/*
2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
3 *
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
16 *
17 */
18
19#ifndef USNIC_CMN_UTIL_H
20#define USNIC_CMN_UTIL_H
21
22static inline void
23usnic_mac_to_gid(const char *const mac, char *raw_gid)
24{
25	raw_gid[0] = 0xfe;
26	raw_gid[1] = 0x80;
27	memset(&raw_gid[2], 0, 6);
28	raw_gid[8] = mac[0]^2;
29	raw_gid[9] = mac[1];
30	raw_gid[10] = mac[2];
31	raw_gid[11] = 0xff;
32	raw_gid[12] = 0xfe;
33	raw_gid[13] = mac[3];
34	raw_gid[14] = mac[4];
35	raw_gid[15] = mac[5];
36}
37
38static inline void
39usnic_mac_ip_to_gid(const char *const mac, const __be32 inaddr, char *raw_gid)
40{
41	raw_gid[0] = 0xfe;
42	raw_gid[1] = 0x80;
43	memset(&raw_gid[2], 0, 2);
44	memcpy(&raw_gid[4], &inaddr, 4);
45	raw_gid[8] = mac[0]^2;
46	raw_gid[9] = mac[1];
47	raw_gid[10] = mac[2];
48	raw_gid[11] = 0xff;
49	raw_gid[12] = 0xfe;
50	raw_gid[13] = mac[3];
51	raw_gid[14] = mac[4];
52	raw_gid[15] = mac[5];
53}
54
55static inline void
56usnic_write_gid_if_id_from_mac(char *mac, char *raw_gid)
57{
58	raw_gid[8] = mac[0]^2;
59	raw_gid[9] = mac[1];
60	raw_gid[10] = mac[2];
61	raw_gid[11] = 0xff;
62	raw_gid[12] = 0xfe;
63	raw_gid[13] = mac[3];
64	raw_gid[14] = mac[4];
65	raw_gid[15] = mac[5];
66}
67
68#endif /* USNIC_COMMON_UTIL_H */
69