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5c0aec93 AB |
1 | /* |
2 | * iplink_hsr.c HSR device support | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Arvid Brodin <arvid.brodin@alten.se> | |
10 | * | |
11 | * Based on iplink_vlan.c by Patrick McHardy <kaber@trash.net> | |
12 | */ | |
13 | ||
14 | #include <stdio.h> | |
15 | #include <stdlib.h> | |
16 | #include <string.h> | |
17 | #include <sys/socket.h> /* Needed by linux/if.h for some reason */ | |
18 | #include <linux/if.h> | |
19 | #include <linux/if_arp.h> | |
20 | #include "rt_names.h" | |
21 | #include "utils.h" | |
22 | #include "ip_common.h" | |
23 | ||
561e650e | 24 | static void print_usage(FILE *f) |
5c0aec93 | 25 | { |
561e650e | 26 | fprintf(f, |
5c0aec93 | 27 | "Usage:\tip link add name NAME type hsr slave1 SLAVE1-IF slave2 SLAVE2-IF\n" |
4273f100 | 28 | "\t[ supervision ADDR-BYTE ] [version VERSION]\n" |
5c0aec93 AB |
29 | "\n" |
30 | "NAME\n" | |
31 | " name of new hsr device (e.g. hsr0)\n" | |
32 | "SLAVE1-IF, SLAVE2-IF\n" | |
33 | " the two slave devices bound to the HSR device\n" | |
34 | "ADDR-BYTE\n" | |
35 | " 0-255; the last byte of the multicast address used for HSR supervision\n" | |
4273f100 PH |
36 | " frames (default = 0)\n" |
37 | "VERSION\n" | |
38 | " 0,1; the protocol version to be used. (default = 0)\n"); | |
5c0aec93 AB |
39 | } |
40 | ||
561e650e | 41 | static void usage(void) |
42 | { | |
43 | print_usage(stderr); | |
44 | } | |
45 | ||
5c0aec93 AB |
46 | static int hsr_parse_opt(struct link_util *lu, int argc, char **argv, |
47 | struct nlmsghdr *n) | |
48 | { | |
49 | int ifindex; | |
50 | unsigned char multicast_spec; | |
4273f100 | 51 | unsigned char protocol_version; |
5c0aec93 AB |
52 | |
53 | while (argc > 0) { | |
54 | if (matches(*argv, "supervision") == 0) { | |
55 | NEXT_ARG(); | |
56 | if (get_u8(&multicast_spec, *argv, 0)) | |
57 | invarg("ADDR-BYTE is invalid", *argv); | |
58 | addattr_l(n, 1024, IFLA_HSR_MULTICAST_SPEC, | |
59 | &multicast_spec, 1); | |
4273f100 PH |
60 | } else if (matches(*argv, "version") == 0) { |
61 | NEXT_ARG(); | |
62 | if (!(get_u8(&protocol_version, *argv, 0) == 0 || | |
63 | get_u8(&protocol_version, *argv, 0) == 1)) | |
64 | invarg("version is invalid", *argv); | |
65 | addattr_l(n, 1024, IFLA_HSR_VERSION, | |
66 | &protocol_version, 1); | |
5c0aec93 AB |
67 | } else if (matches(*argv, "slave1") == 0) { |
68 | NEXT_ARG(); | |
69 | ifindex = ll_name_to_index(*argv); | |
70 | if (ifindex == 0) | |
71 | invarg("No such interface", *argv); | |
72 | addattr_l(n, 1024, IFLA_HSR_SLAVE1, &ifindex, 4); | |
73 | } else if (matches(*argv, "slave2") == 0) { | |
74 | NEXT_ARG(); | |
75 | ifindex = ll_name_to_index(*argv); | |
76 | if (ifindex == 0) | |
77 | invarg("No such interface", *argv); | |
78 | addattr_l(n, 1024, IFLA_HSR_SLAVE2, &ifindex, 4); | |
79 | } else if (matches(*argv, "help") == 0) { | |
80 | usage(); | |
81 | return -1; | |
82 | } else { | |
83 | fprintf(stderr, "hsr: what is \"%s\"?\n", *argv); | |
84 | usage(); | |
85 | return -1; | |
86 | } | |
87 | argc--, argv++; | |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
93 | static void hsr_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
94 | { | |
95 | SPRINT_BUF(b1); | |
96 | ||
97 | if (!tb) | |
98 | return; | |
99 | ||
100 | if (tb[IFLA_HSR_SLAVE1] && | |
101 | RTA_PAYLOAD(tb[IFLA_HSR_SLAVE1]) < sizeof(__u32)) | |
102 | return; | |
103 | if (tb[IFLA_HSR_SLAVE2] && | |
104 | RTA_PAYLOAD(tb[IFLA_HSR_SLAVE2]) < sizeof(__u32)) | |
105 | return; | |
106 | if (tb[IFLA_HSR_SEQ_NR] && | |
107 | RTA_PAYLOAD(tb[IFLA_HSR_SEQ_NR]) < sizeof(__u16)) | |
108 | return; | |
109 | if (tb[IFLA_HSR_SUPERVISION_ADDR] && | |
110 | RTA_PAYLOAD(tb[IFLA_HSR_SUPERVISION_ADDR]) < ETH_ALEN) | |
111 | return; | |
112 | ||
5c0aec93 | 113 | if (tb[IFLA_HSR_SLAVE1]) |
69ffd273 JF |
114 | print_string(PRINT_ANY, |
115 | "slave1", | |
116 | "slave1 %s ", | |
117 | ll_index_to_name(rta_getattr_u32(tb[IFLA_HSR_SLAVE1]))); | |
5c0aec93 | 118 | else |
69ffd273 | 119 | print_null(PRINT_ANY, "slave1", "slave1 %s ", "<none>"); |
5c0aec93 | 120 | |
5c0aec93 | 121 | if (tb[IFLA_HSR_SLAVE2]) |
69ffd273 JF |
122 | print_string(PRINT_ANY, |
123 | "slave2", | |
124 | "slave2 %s ", | |
125 | ll_index_to_name(rta_getattr_u32(tb[IFLA_HSR_SLAVE2]))); | |
5c0aec93 | 126 | else |
69ffd273 | 127 | print_null(PRINT_ANY, "slave2", "slave2 %s ", "<none>"); |
5c0aec93 AB |
128 | |
129 | if (tb[IFLA_HSR_SEQ_NR]) | |
69ffd273 JF |
130 | print_int(PRINT_ANY, |
131 | "seq_nr", | |
132 | "sequence %d ", | |
133 | rta_getattr_u16(tb[IFLA_HSR_SEQ_NR])); | |
5c0aec93 AB |
134 | |
135 | if (tb[IFLA_HSR_SUPERVISION_ADDR]) | |
69ffd273 JF |
136 | print_string(PRINT_ANY, |
137 | "supervision_addr", | |
138 | "supervision %s ", | |
139 | ll_addr_n2a(RTA_DATA(tb[IFLA_HSR_SUPERVISION_ADDR]), | |
140 | RTA_PAYLOAD(tb[IFLA_HSR_SUPERVISION_ADDR]), | |
141 | ARPHRD_VOID, | |
142 | b1, sizeof(b1))); | |
5c0aec93 AB |
143 | } |
144 | ||
561e650e | 145 | static void hsr_print_help(struct link_util *lu, int argc, char **argv, |
146 | FILE *f) | |
147 | { | |
148 | print_usage(f); | |
149 | } | |
150 | ||
5c0aec93 AB |
151 | struct link_util hsr_link_util = { |
152 | .id = "hsr", | |
e7867c34 | 153 | .maxattr = IFLA_HSR_MAX, |
5c0aec93 AB |
154 | .parse_opt = hsr_parse_opt, |
155 | .print_opt = hsr_print_opt, | |
561e650e | 156 | .print_help = hsr_print_help, |
5c0aec93 | 157 | }; |