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5c302d51 PM |
1 | /* |
2 | * iplink_vlan.c VLAN 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: Patrick McHardy <kaber@trash.net> | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include <linux/if_vlan.h> | |
16 | ||
17 | #include "rt_names.h" | |
18 | #include "utils.h" | |
19 | #include "ip_common.h" | |
20 | ||
561e650e | 21 | static void print_explain(FILE *f) |
5c302d51 | 22 | { |
561e650e | 23 | fprintf(f, |
8b471354 PS |
24 | "Usage: ... vlan id VLANID\n" |
25 | " [ protocol VLANPROTO ]\n" | |
26 | " [ reorder_hdr { on | off } ]\n" | |
27 | " [ gvrp { on | off } ]\n" | |
28 | " [ mvrp { on | off } ]\n" | |
29 | " [ loose_binding { on | off } ]\n" | |
30 | " [ ingress-qos-map QOS-MAP ]\n" | |
31 | " [ egress-qos-map QOS-MAP ]\n" | |
5c302d51 PM |
32 | "\n" |
33 | "VLANID := 0-4095\n" | |
8b471354 | 34 | "VLANPROTO: [ 802.1Q / 802.1ad ]\n" |
5c302d51 PM |
35 | "QOS-MAP := [ QOS-MAP ] QOS-MAPPING\n" |
36 | "QOS-MAPPING := FROM:TO\n" | |
37 | ); | |
38 | } | |
39 | ||
561e650e | 40 | static void explain(void) |
41 | { | |
42 | print_explain(stderr); | |
43 | } | |
44 | ||
14645ec2 | 45 | static int on_off(const char *msg, const char *arg) |
5c302d51 | 46 | { |
14645ec2 | 47 | fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", msg, arg); |
5c302d51 PM |
48 | return -1; |
49 | } | |
50 | ||
51 | static int vlan_parse_qos_map(int *argcp, char ***argvp, struct nlmsghdr *n, | |
52 | int attrtype) | |
53 | { | |
54 | int argc = *argcp; | |
55 | char **argv = *argvp; | |
56 | struct ifla_vlan_qos_mapping m; | |
57 | struct rtattr *tail; | |
58 | ||
c14f9d92 | 59 | tail = addattr_nest(n, 1024, attrtype); |
5c302d51 PM |
60 | |
61 | while (argc > 0) { | |
62 | char *colon = strchr(*argv, ':'); | |
63 | ||
64 | if (!colon) | |
65 | break; | |
66 | *colon = '\0'; | |
67 | ||
68 | if (get_u32(&m.from, *argv, 0)) | |
69 | return 1; | |
70 | if (get_u32(&m.to, colon + 1, 0)) | |
71 | return 1; | |
72 | argc--, argv++; | |
73 | ||
74 | addattr_l(n, 1024, IFLA_VLAN_QOS_MAPPING, &m, sizeof(m)); | |
75 | } | |
76 | ||
c14f9d92 | 77 | addattr_nest_end(n, tail); |
5c302d51 PM |
78 | |
79 | *argcp = argc; | |
80 | *argvp = argv; | |
81 | return 0; | |
82 | } | |
83 | ||
84 | static int vlan_parse_opt(struct link_util *lu, int argc, char **argv, | |
85 | struct nlmsghdr *n) | |
86 | { | |
87 | struct ifla_vlan_flags flags = { 0 }; | |
8fd8f6ed | 88 | __u16 id, proto; |
5c302d51 PM |
89 | |
90 | while (argc > 0) { | |
8fd8f6ed PM |
91 | if (matches(*argv, "protocol") == 0) { |
92 | NEXT_ARG(); | |
93 | if (ll_proto_a2n(&proto, *argv)) | |
94 | invarg("protocol is invalid", *argv); | |
95 | addattr_l(n, 1024, IFLA_VLAN_PROTOCOL, &proto, 2); | |
96 | } else if (matches(*argv, "id") == 0) { | |
5c302d51 PM |
97 | NEXT_ARG(); |
98 | if (get_u16(&id, *argv, 0)) | |
99 | invarg("id is invalid", *argv); | |
100 | addattr_l(n, 1024, IFLA_VLAN_ID, &id, 2); | |
101 | } else if (matches(*argv, "reorder_hdr") == 0) { | |
102 | NEXT_ARG(); | |
103 | flags.mask |= VLAN_FLAG_REORDER_HDR; | |
104 | if (strcmp(*argv, "on") == 0) | |
105 | flags.flags |= VLAN_FLAG_REORDER_HDR; | |
106 | else if (strcmp(*argv, "off") == 0) | |
107 | flags.flags &= ~VLAN_FLAG_REORDER_HDR; | |
108 | else | |
14645ec2 | 109 | return on_off("reorder_hdr", *argv); |
47420640 PM |
110 | } else if (matches(*argv, "gvrp") == 0) { |
111 | NEXT_ARG(); | |
112 | flags.mask |= VLAN_FLAG_GVRP; | |
113 | if (strcmp(*argv, "on") == 0) | |
114 | flags.flags |= VLAN_FLAG_GVRP; | |
115 | else if (strcmp(*argv, "off") == 0) | |
116 | flags.flags &= ~VLAN_FLAG_GVRP; | |
117 | else | |
14645ec2 | 118 | return on_off("gvrp", *argv); |
4e9a6860 DW |
119 | } else if (matches(*argv, "mvrp") == 0) { |
120 | NEXT_ARG(); | |
121 | flags.mask |= VLAN_FLAG_MVRP; | |
122 | if (strcmp(*argv, "on") == 0) | |
123 | flags.flags |= VLAN_FLAG_MVRP; | |
124 | else if (strcmp(*argv, "off") == 0) | |
125 | flags.flags &= ~VLAN_FLAG_MVRP; | |
126 | else | |
127 | return on_off("mvrp", *argv); | |
2180b6b5 PM |
128 | } else if (matches(*argv, "loose_binding") == 0) { |
129 | NEXT_ARG(); | |
130 | flags.mask |= VLAN_FLAG_LOOSE_BINDING; | |
131 | if (strcmp(*argv, "on") == 0) | |
132 | flags.flags |= VLAN_FLAG_LOOSE_BINDING; | |
133 | else if (strcmp(*argv, "off") == 0) | |
134 | flags.flags &= ~VLAN_FLAG_LOOSE_BINDING; | |
135 | else | |
14645ec2 | 136 | return on_off("loose_binding", *argv); |
5c302d51 PM |
137 | } else if (matches(*argv, "ingress-qos-map") == 0) { |
138 | NEXT_ARG(); | |
139 | if (vlan_parse_qos_map(&argc, &argv, n, | |
140 | IFLA_VLAN_INGRESS_QOS)) | |
141 | invarg("invalid ingress-qos-map", *argv); | |
142 | continue; | |
143 | } else if (matches(*argv, "egress-qos-map") == 0) { | |
144 | NEXT_ARG(); | |
145 | if (vlan_parse_qos_map(&argc, &argv, n, | |
146 | IFLA_VLAN_EGRESS_QOS)) | |
147 | invarg("invalid egress-qos-map", *argv); | |
148 | continue; | |
149 | } else if (matches(*argv, "help") == 0) { | |
150 | explain(); | |
151 | return -1; | |
152 | } else { | |
14645ec2 | 153 | fprintf(stderr, "vlan: unknown command \"%s\"?\n", *argv); |
5c302d51 PM |
154 | explain(); |
155 | return -1; | |
156 | } | |
157 | argc--, argv++; | |
158 | } | |
159 | ||
160 | if (flags.mask) | |
161 | addattr_l(n, 1024, IFLA_VLAN_FLAGS, &flags, sizeof(flags)); | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
43bc20ae JF |
166 | static void vlan_print_map(FILE *f, |
167 | const char *name_json, | |
168 | const char *name_fp, | |
169 | struct rtattr *attr) | |
5c302d51 PM |
170 | { |
171 | struct ifla_vlan_qos_mapping *m; | |
172 | struct rtattr *i; | |
173 | int rem; | |
174 | ||
43bc20ae JF |
175 | open_json_array(PRINT_JSON, name_json); |
176 | print_string(PRINT_FP, NULL, "\n %s { ", name_fp); | |
5c302d51 PM |
177 | |
178 | rem = RTA_PAYLOAD(attr); | |
179 | for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { | |
180 | m = RTA_DATA(i); | |
43bc20ae JF |
181 | |
182 | if (is_json_context()) { | |
183 | open_json_object(NULL); | |
184 | print_uint(PRINT_JSON, "from", NULL, m->from); | |
185 | print_uint(PRINT_JSON, "to", NULL, m->to); | |
186 | close_json_object(); | |
187 | } else { | |
188 | fprintf(f, "%u:%u ", m->from, m->to); | |
189 | } | |
5c302d51 | 190 | } |
43bc20ae JF |
191 | |
192 | close_json_array(PRINT_JSON, NULL); | |
193 | print_string(PRINT_FP, NULL, "%s ", "}"); | |
5c302d51 PM |
194 | } |
195 | ||
196 | static void vlan_print_flags(FILE *fp, __u32 flags) | |
197 | { | |
43bc20ae JF |
198 | open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<"); |
199 | #define _PF(f) if (flags & VLAN_FLAG_##f) { \ | |
200 | flags &= ~VLAN_FLAG_##f; \ | |
201 | print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); \ | |
202 | } | |
5c302d51 | 203 | _PF(REORDER_HDR); |
47420640 | 204 | _PF(GVRP); |
4e9a6860 | 205 | _PF(MVRP); |
2180b6b5 | 206 | _PF(LOOSE_BINDING); |
5c302d51 PM |
207 | #undef _PF |
208 | if (flags) | |
43bc20ae JF |
209 | print_hex(PRINT_ANY, NULL, "%x", flags); |
210 | close_json_array(PRINT_ANY, "> "); | |
5c302d51 PM |
211 | } |
212 | ||
213 | static void vlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
214 | { | |
215 | struct ifla_vlan_flags *flags; | |
56f5daac | 216 | |
8fd8f6ed PM |
217 | SPRINT_BUF(b1); |
218 | ||
5c302d51 PM |
219 | if (!tb) |
220 | return; | |
221 | ||
8fd8f6ed PM |
222 | if (tb[IFLA_VLAN_PROTOCOL] && |
223 | RTA_PAYLOAD(tb[IFLA_VLAN_PROTOCOL]) < sizeof(__u16)) | |
224 | return; | |
5c302d51 PM |
225 | if (!tb[IFLA_VLAN_ID] || |
226 | RTA_PAYLOAD(tb[IFLA_VLAN_ID]) < sizeof(__u16)) | |
227 | return; | |
228 | ||
8fd8f6ed | 229 | if (tb[IFLA_VLAN_PROTOCOL]) |
43bc20ae JF |
230 | print_string(PRINT_ANY, |
231 | "protocol", | |
232 | "protocol %s ", | |
233 | ll_proto_n2a( | |
234 | rta_getattr_u16(tb[IFLA_VLAN_PROTOCOL]), | |
8fd8f6ed PM |
235 | b1, sizeof(b1))); |
236 | else | |
43bc20ae | 237 | print_string(PRINT_ANY, "protocol", "protocol %s ", "802.1q"); |
8fd8f6ed | 238 | |
43bc20ae JF |
239 | print_uint(PRINT_ANY, |
240 | "id", | |
241 | "id %u ", | |
242 | rta_getattr_u16(tb[IFLA_VLAN_ID])); | |
5c302d51 PM |
243 | |
244 | if (tb[IFLA_VLAN_FLAGS]) { | |
245 | if (RTA_PAYLOAD(tb[IFLA_VLAN_FLAGS]) < sizeof(*flags)) | |
246 | return; | |
247 | flags = RTA_DATA(tb[IFLA_VLAN_FLAGS]); | |
248 | vlan_print_flags(f, flags->flags); | |
249 | } | |
250 | if (tb[IFLA_VLAN_INGRESS_QOS]) | |
43bc20ae JF |
251 | vlan_print_map(f, |
252 | "ingress_qos", | |
253 | "ingress-qos-map", | |
254 | tb[IFLA_VLAN_INGRESS_QOS]); | |
5c302d51 | 255 | if (tb[IFLA_VLAN_EGRESS_QOS]) |
43bc20ae JF |
256 | vlan_print_map(f, |
257 | "egress_qos", | |
258 | "egress-qos-map", | |
259 | tb[IFLA_VLAN_EGRESS_QOS]); | |
5c302d51 PM |
260 | } |
261 | ||
561e650e | 262 | static void vlan_print_help(struct link_util *lu, int argc, char **argv, |
43bc20ae | 263 | FILE *f) |
561e650e | 264 | { |
265 | print_explain(f); | |
266 | } | |
267 | ||
5c302d51 PM |
268 | struct link_util vlan_link_util = { |
269 | .id = "vlan", | |
270 | .maxattr = IFLA_VLAN_MAX, | |
271 | .parse_opt = vlan_parse_opt, | |
272 | .print_opt = vlan_print_opt, | |
561e650e | 273 | .print_help = vlan_print_help, |
5c302d51 | 274 | }; |