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 tarball for details.
10 /* BB_AUDIT SUSv3 N/A */
15 /* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
16 enum vlan_ioctl_cmds
{
19 SET_VLAN_INGRESS_PRIORITY_CMD
,
20 SET_VLAN_EGRESS_PRIORITY_CMD
,
21 GET_VLAN_INGRESS_PRIORITY_CMD
,
22 GET_VLAN_EGRESS_PRIORITY_CMD
,
23 SET_VLAN_NAME_TYPE_CMD
,
26 enum vlan_name_types
{
27 VLAN_NAME_TYPE_PLUS_VID
, /* Name will look like: vlan0005 */
28 VLAN_NAME_TYPE_RAW_PLUS_VID
, /* name will look like: eth1.0005 */
29 VLAN_NAME_TYPE_PLUS_VID_NO_PAD
, /* Name will look like: vlan5 */
30 VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
, /* Name will look like: eth0.5 */
31 VLAN_NAME_TYPE_HIGHEST
34 struct vlan_ioctl_args
{
35 int cmd
; /* Should be one of the vlan_ioctl_cmds enum above. */
41 unsigned int skb_priority
;
42 unsigned int name_type
;
43 unsigned int bind_type
;
44 unsigned int flag
; /* Matches vlan_dev_info flags */
50 #define VLAN_GROUP_ARRAY_LEN 4096
51 #define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
53 /* On entry, table points to the length of the current string
54 * plus NUL terminator plus data length for the subsequent entry.
55 * The return value is the last data entry for the matching string. */
56 static const char *xfind_str(const char *table
, const char *str
)
58 while (strcasecmp(str
, table
+1) != 0) {
67 static const char cmds
[] ALIGN1
= {
72 3, SET_VLAN_NAME_TYPE_CMD
, 17,
74 'n', 'a', 'm', 'e', '_',
75 't', 'y', 'p', 'e', 0,
76 5, SET_VLAN_FLAG_CMD
, 12,
78 'f', 'l', 'a', 'g', 0,
79 5, SET_VLAN_EGRESS_PRIORITY_CMD
, 18,
81 'e', 'g', 'r', 'e', 's', 's', '_',
83 5, SET_VLAN_INGRESS_PRIORITY_CMD
, 16,
85 'i', 'n', 'g', 'r', 'e', 's', 's', '_',
89 static const char name_types
[] ALIGN1
= {
90 VLAN_NAME_TYPE_PLUS_VID
, 16,
92 '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
94 VLAN_NAME_TYPE_PLUS_VID_NO_PAD
, 22,
96 '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
97 '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
98 VLAN_NAME_TYPE_RAW_PLUS_VID
, 15,
100 '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
102 VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
, 20,
104 '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
105 '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
108 static const char conf_file_name
[] ALIGN1
= "/proc/net/vlan/config";
110 int vconfig_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
111 int vconfig_main(int argc
, char **argv
)
113 struct vlan_ioctl_args ifr
;
121 /* Don't bother closing the filedes. It will be closed on cleanup. */
122 /* Will die if 802.1q is not present */
123 xopen(conf_file_name
, O_RDONLY
);
125 memset(&ifr
, 0, sizeof(ifr
));
128 p
= xfind_str(cmds
+2, *argv
);
134 if (ifr
.cmd
== SET_VLAN_NAME_TYPE_CMD
) { /* set_name_type */
135 ifr
.u
.name_type
= *xfind_str(name_types
+1, argv
[1]);
137 strncpy_IFNAMSIZ(ifr
.device1
, argv
[1]);
140 /* I suppose one could try to combine some of the function calls below,
141 * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
142 * (unsigned) int members of a unions. But because of the range checking,
143 * doing so wouldn't save that much space and would also make maintainence
145 if (ifr
.cmd
== SET_VLAN_FLAG_CMD
) { /* set_flag */
146 ifr
.u
.flag
= xatoul_range(p
, 0, 1);
147 /* DM: in order to set reorder header, qos must be set */
148 ifr
.vlan_qos
= xatoul_range(argv
[3], 0, 7);
149 } else if (ifr
.cmd
== ADD_VLAN_CMD
) { /* add */
150 ifr
.u
.VID
= xatoul_range(p
, 0, VLAN_GROUP_ARRAY_LEN
-1);
151 } else if (ifr
.cmd
!= DEL_VLAN_CMD
) { /* set_{egress|ingress}_map */
152 ifr
.u
.skb_priority
= xatou(p
);
153 ifr
.vlan_qos
= xatoul_range(argv
[3], 0, 7);
157 fd
= xsocket(AF_INET
, SOCK_STREAM
, 0);
158 ioctl_or_perror_and_die(fd
, SIOCSIFVLAN
, &ifr
,
159 "ioctl error for %s", *argv
);