2 * iplink_vlan.c VLAN device support
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.
9 * Authors: Patrick McHardy <kaber@trash.net>
15 #include <linux/if_vlan.h>
19 #include "ip_common.h"
21 static void explain(void)
24 "Usage: ... vlan id VLANID [ FLAG-LIST ]\n"
25 " [ ingress-qos-map QOS-MAP ] [ egress-qos-map QOS-MAP ]\n"
28 "FLAG-LIST := [ FLAG-LIST ] FLAG\n"
29 "FLAG := [ reorder_hdr { on | off } ] [ gvrp { on | off } ]\n"
30 " [ loose_binding { on | off } ]\n"
31 "QOS-MAP := [ QOS-MAP ] QOS-MAPPING\n"
32 "QOS-MAPPING := FROM:TO\n"
36 static int on_off(char *msg)
38 fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\"\n", msg);
42 static int vlan_parse_qos_map(int *argcp, char ***argvp, struct nlmsghdr *n,
47 struct ifla_vlan_qos_mapping m;
51 addattr_l(n, 1024, attrtype, NULL, 0);
54 char *colon = strchr(*argv, ':');
60 if (get_u32(&m.from, *argv, 0))
62 if (get_u32(&m.to, colon + 1, 0))
66 addattr_l(n, 1024, IFLA_VLAN_QOS_MAPPING, &m, sizeof(m));
69 tail->rta_len = (void *) NLMSG_TAIL(n) - (void *)tail;
76 static int vlan_parse_opt(struct link_util *lu, int argc, char **argv,
79 struct ifla_vlan_flags flags = { 0 };
83 if (matches(*argv, "id") == 0) {
85 if (get_u16(&id, *argv, 0))
86 invarg("id is invalid", *argv);
87 addattr_l(n, 1024, IFLA_VLAN_ID, &id, 2);
88 } else if (matches(*argv, "reorder_hdr") == 0) {
90 flags.mask |= VLAN_FLAG_REORDER_HDR;
91 if (strcmp(*argv, "on") == 0)
92 flags.flags |= VLAN_FLAG_REORDER_HDR;
93 else if (strcmp(*argv, "off") == 0)
94 flags.flags &= ~VLAN_FLAG_REORDER_HDR;
96 return on_off("reorder_hdr");
97 } else if (matches(*argv, "gvrp") == 0) {
99 flags.mask |= VLAN_FLAG_GVRP;
100 if (strcmp(*argv, "on") == 0)
101 flags.flags |= VLAN_FLAG_GVRP;
102 else if (strcmp(*argv, "off") == 0)
103 flags.flags &= ~VLAN_FLAG_GVRP;
105 return on_off("gvrp");
106 } else if (matches(*argv, "loose_binding") == 0) {
108 flags.mask |= VLAN_FLAG_LOOSE_BINDING;
109 if (strcmp(*argv, "on") == 0)
110 flags.flags |= VLAN_FLAG_LOOSE_BINDING;
111 else if (strcmp(*argv, "off") == 0)
112 flags.flags &= ~VLAN_FLAG_LOOSE_BINDING;
114 return on_off("loose_binding");
115 } else if (matches(*argv, "ingress-qos-map") == 0) {
117 if (vlan_parse_qos_map(&argc, &argv, n,
118 IFLA_VLAN_INGRESS_QOS))
119 invarg("invalid ingress-qos-map", *argv);
121 } else if (matches(*argv, "egress-qos-map") == 0) {
123 if (vlan_parse_qos_map(&argc, &argv, n,
124 IFLA_VLAN_EGRESS_QOS))
125 invarg("invalid egress-qos-map", *argv);
127 } else if (matches(*argv, "help") == 0) {
131 fprintf(stderr, "vlan: what is \"%s\"?\n", *argv);
139 addattr_l(n, 1024, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
144 static void vlan_print_map(FILE *f, char *name, struct rtattr *attr)
146 struct ifla_vlan_qos_mapping *m;
150 fprintf(f, "\n %s { ", name);
152 rem = RTA_PAYLOAD(attr);
153 for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
155 fprintf(f, "%u:%u ", m->from, m->to);
160 static void vlan_print_flags(FILE *fp, __u32 flags)
163 #define _PF(f) if (flags & VLAN_FLAG_##f) { \
164 flags &= ~ VLAN_FLAG_##f; \
165 fprintf(fp, #f "%s", flags ? "," : ""); \
172 fprintf(fp, "%x", flags);
176 static void vlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
178 struct ifla_vlan_flags *flags;
182 if (!tb[IFLA_VLAN_ID] ||
183 RTA_PAYLOAD(tb[IFLA_VLAN_ID]) < sizeof(__u16))
186 fprintf(f, "id %u ", rta_getattr_u16(tb[IFLA_VLAN_ID]));
188 if (tb[IFLA_VLAN_FLAGS]) {
189 if (RTA_PAYLOAD(tb[IFLA_VLAN_FLAGS]) < sizeof(*flags))
191 flags = RTA_DATA(tb[IFLA_VLAN_FLAGS]);
192 vlan_print_flags(f, flags->flags);
194 if (tb[IFLA_VLAN_INGRESS_QOS])
195 vlan_print_map(f, "ingress-qos-map", tb[IFLA_VLAN_INGRESS_QOS]);
196 if (tb[IFLA_VLAN_EGRESS_QOS])
197 vlan_print_map(f, "egress-qos-map", tb[IFLA_VLAN_EGRESS_QOS]);
200 struct link_util vlan_link_util = {
202 .maxattr = IFLA_VLAN_MAX,
203 .parse_opt = vlan_parse_opt,
204 .print_opt = vlan_print_opt,