1 /* vi: set sw=4 ts=4: */
3 * vconfig implementation for busybox
5 * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 /* BB_AUDIT SUSv3 N/A */
12 //config:config VCONFIG
13 //config: bool "vconfig (2.5 kb)"
15 //config: select PLATFORM_LINUX
17 //config: Creates, removes, and configures VLAN interfaces
19 //applet:IF_VCONFIG(APPLET(vconfig, BB_DIR_SBIN, BB_SUID_DROP))
21 //kbuild:lib-$(CONFIG_VCONFIG) += vconfig.o
23 //usage:#define vconfig_trivial_usage
24 //usage: "COMMAND [OPTIONS]"
25 //usage:#define vconfig_full_usage "\n\n"
26 //usage: "Create and remove virtual ethernet devices\n"
27 //usage: "\n add IFACE VLAN_ID"
28 //usage: "\n rem VLAN_NAME"
29 //usage: "\n set_flag IFACE 0|1 VLAN_QOS"
30 //usage: "\n set_egress_map VLAN_NAME SKB_PRIO VLAN_QOS"
31 //usage: "\n set_ingress_map VLAN_NAME SKB_PRIO VLAN_QOS"
32 //usage: "\n set_name_type NAME_TYPE"
37 /* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
38 enum vlan_ioctl_cmds {
41 SET_VLAN_INGRESS_PRIORITY_CMD,
42 SET_VLAN_EGRESS_PRIORITY_CMD,
43 GET_VLAN_INGRESS_PRIORITY_CMD,
44 GET_VLAN_EGRESS_PRIORITY_CMD,
45 SET_VLAN_NAME_TYPE_CMD,
48 enum vlan_name_types {
49 VLAN_NAME_TYPE_PLUS_VID, /* Name will look like: vlan0005 */
50 VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like: eth1.0005 */
51 VLAN_NAME_TYPE_PLUS_VID_NO_PAD, /* Name will look like: vlan5 */
52 VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, /* Name will look like: eth0.5 */
53 VLAN_NAME_TYPE_HIGHEST
56 struct vlan_ioctl_args {
57 int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */
63 unsigned int skb_priority;
64 unsigned int name_type;
65 unsigned int bind_type;
66 unsigned int flag; /* Matches vlan_dev_info flags */
72 #define VLAN_GROUP_ARRAY_LEN 4096
73 #define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
75 /* On entry, table points to the length of the current string
76 * plus NUL terminator plus data length for the subsequent entry.
77 * The return value is the last data entry for the matching string. */
78 static const char *xfind_str(const char *table, const char *str)
80 while (strcasecmp(str, table + 1) != 0) {
88 static const char cmds[] ALIGN1 = {
93 3, SET_VLAN_NAME_TYPE_CMD, 17,
94 's','e','t','_','n','a','m','e','_','t','y','p','e',0,
95 5, SET_VLAN_FLAG_CMD, 12,
96 's','e','t','_','f','l','a','g',0,
97 5, SET_VLAN_EGRESS_PRIORITY_CMD, 18,
98 's','e','t','_','e','g','r','e','s','s','_','m','a','p',0,
99 5, SET_VLAN_INGRESS_PRIORITY_CMD, 0,
100 's','e','t','_','i','n','g','r','e','s','s','_','m','a','p',0,
103 static const char name_types[] ALIGN1 = {
104 VLAN_NAME_TYPE_PLUS_VID, 16,
105 'V','L','A','N','_','P','L','U','S','_','V','I','D',0,
106 VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22,
107 'V','L','A','N','_','P','L','U','S','_','V','I','D','_','N','O','_','P','A','D',0,
108 VLAN_NAME_TYPE_RAW_PLUS_VID, 15,
109 'D','E','V','_','P','L','U','S','_','V','I','D',0,
110 VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 0,
111 'D','E','V','_','P','L','U','S','_','V','I','D','_','N','O','_','P','A','D',0,
114 int vconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
115 int vconfig_main(int argc, char **argv)
117 struct vlan_ioctl_args ifr;
121 memset(&ifr, 0, sizeof(ifr));
126 p = xfind_str(cmds + 2, argv[0]);
131 if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) {
133 ifr.u.name_type = *xfind_str(name_types + 1, argv[1]);
135 strncpy_IFNAMSIZ(ifr.device1, argv[1]);
138 /* I suppose one could try to combine some of the function calls below,
139 * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
140 * (unsigned) int members of a unions. But because of the range checking,
141 * doing so wouldn't save that much space and would also make maintenance
144 if (ifr.cmd == SET_VLAN_FLAG_CMD) {
146 ifr.u.flag = xatou_range(p, 0, 1);
147 /* DM: in order to set reorder header, qos must be set */
148 ifr.vlan_qos = xatou_range(argv[3], 0, 7);
149 } else if (ifr.cmd == ADD_VLAN_CMD) {
151 ifr.u.VID = xatou_range(p, 0, VLAN_GROUP_ARRAY_LEN - 1);
152 } else if (ifr.cmd != DEL_VLAN_CMD) {
153 /* set_{egress|ingress}_map */
154 ifr.u.skb_priority = xatou(p);
155 ifr.vlan_qos = xatou_range(argv[3], 0, 7);
159 fd = xsocket(AF_INET, SOCK_STREAM, 0);
160 ioctl_or_perror_and_die(fd, SIOCSIFVLAN, &ifr,
161 "ioctl error for %s", argv[0]);