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286446c1 ME |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * link_xfrm.c Virtual XFRM Interface driver module | |
4 | * | |
5 | * Authors: Matt Ellison <matt@arroyo.io> | |
6 | */ | |
7 | ||
8 | #include <string.h> | |
9 | #include <linux/if_link.h> | |
10 | ||
11 | #include "rt_names.h" | |
12 | #include "utils.h" | |
13 | #include "ip_common.h" | |
14 | #include "tunnel.h" | |
15 | ||
16 | static void xfrm_print_help(struct link_util *lu, int argc, char **argv, | |
17 | FILE *f) | |
18 | { | |
8589eb4e | 19 | fprintf(f, |
80d0e626 | 20 | "Usage: ... %-4s dev [ PHYS_DEV ] [ if_id IF-ID ]\n" |
8589eb4e MC |
21 | "\n" |
22 | "Where: IF-ID := { 0x0..0xffffffff }\n", | |
23 | lu->id); | |
286446c1 ME |
24 | } |
25 | ||
26 | static int xfrm_parse_opt(struct link_util *lu, int argc, char **argv, | |
27 | struct nlmsghdr *n) | |
28 | { | |
29 | unsigned int link = 0; | |
30 | __u32 if_id = 0; | |
31 | ||
32 | while (argc > 0) { | |
33 | if (!matches(*argv, "dev")) { | |
34 | NEXT_ARG(); | |
35 | link = ll_name_to_index(*argv); | |
36 | if (!link) | |
37 | exit(nodev(*argv)); | |
38 | } else if (!matches(*argv, "if_id")) { | |
39 | NEXT_ARG(); | |
2cf4d7af AA |
40 | if (get_u32(&if_id, *argv, 0)) |
41 | invarg("if_id value is invalid", *argv); | |
42 | else | |
286446c1 ME |
43 | addattr32(n, 1024, IFLA_XFRM_IF_ID, if_id); |
44 | } else { | |
45 | xfrm_print_help(lu, argc, argv, stderr); | |
46 | return -1; | |
47 | } | |
48 | argc--; argv++; | |
49 | } | |
50 | ||
80d0e626 | 51 | if (link) |
286446c1 | 52 | addattr32(n, 1024, IFLA_XFRM_LINK, link); |
286446c1 ME |
53 | |
54 | return 0; | |
55 | } | |
56 | ||
57 | static void xfrm_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
58 | { | |
59 | ||
60 | if (!tb) | |
61 | return; | |
62 | ||
63 | if (tb[IFLA_XFRM_IF_ID]) { | |
64 | __u32 id = rta_getattr_u32(tb[IFLA_XFRM_IF_ID]); | |
65 | ||
66 | print_0xhex(PRINT_ANY, "if_id", "if_id %#llx ", id); | |
67 | ||
68 | } | |
69 | ||
70 | } | |
71 | ||
72 | struct link_util xfrm_link_util = { | |
73 | .id = "xfrm", | |
74 | .maxattr = IFLA_XFRM_MAX, | |
75 | .parse_opt = xfrm_parse_opt, | |
76 | .print_opt = xfrm_print_opt, | |
77 | .print_help = xfrm_print_help, | |
78 | }; |