1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* vi: set sw=4 ts=4: */
/*
* vconfig implementation for busybox
*
* Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 N/A */
//usage:#define vconfig_trivial_usage
//usage: "COMMAND [OPTIONS]"
//usage:#define vconfig_full_usage "\n\n"
//usage: "Create and remove virtual ethernet devices\n"
//usage: "\n add [interface-name] [vlan_id]"
//usage: "\n rem [vlan-name]"
//usage: "\n set_flag [interface-name] [flag-num] [0 | 1]"
//usage: "\n set_egress_map [vlan-name] [skb_priority] [vlan_qos]"
//usage: "\n set_ingress_map [vlan-name] [skb_priority] [vlan_qos]"
//usage: "\n set_name_type [name-type]"
#include "libbb.h"
#include <net/if.h>
/* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
enum vlan_ioctl_cmds {
ADD_VLAN_CMD,
DEL_VLAN_CMD,
SET_VLAN_INGRESS_PRIORITY_CMD,
SET_VLAN_EGRESS_PRIORITY_CMD,
GET_VLAN_INGRESS_PRIORITY_CMD,
GET_VLAN_EGRESS_PRIORITY_CMD,
SET_VLAN_NAME_TYPE_CMD,
SET_VLAN_FLAG_CMD
};
enum vlan_name_types {
VLAN_NAME_TYPE_PLUS_VID, /* Name will look like: vlan0005 */
VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like: eth1.0005 */
VLAN_NAME_TYPE_PLUS_VID_NO_PAD, /* Name will look like: vlan5 */
VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, /* Name will look like: eth0.5 */
VLAN_NAME_TYPE_HIGHEST
};
struct vlan_ioctl_args {
int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */
char device1[24];
union {
char device2[24];
int VID;
unsigned int skb_priority;
unsigned int name_type;
unsigned int bind_type;
unsigned int flag; /* Matches vlan_dev_info flags */
} u;
short vlan_qos;
};
#define VLAN_GROUP_ARRAY_LEN 4096
#define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
/* On entry, table points to the length of the current string
* plus NUL terminator plus data length for the subsequent entry.
* The return value is the last data entry for the matching string. */
static const char *xfind_str(const char *table, const char *str)
{
while (strcasecmp(str, table+1) != 0) {
table += table[0];
if (!*table) {
bb_show_usage();
}
}
return table - 1;
}
static const char cmds[] ALIGN1 = {
4, ADD_VLAN_CMD, 7,
'a', 'd', 'd', 0,
3, DEL_VLAN_CMD, 7,
'r', 'e', 'm', 0,
3, SET_VLAN_NAME_TYPE_CMD, 17,
's', 'e', 't', '_',
'n', 'a', 'm', 'e', '_',
't', 'y', 'p', 'e', 0,
5, SET_VLAN_FLAG_CMD, 12,
's', 'e', 't', '_',
'f', 'l', 'a', 'g', 0,
5, SET_VLAN_EGRESS_PRIORITY_CMD, 18,
's', 'e', 't', '_',
'e', 'g', 'r', 'e', 's', 's', '_',
'm', 'a', 'p', 0,
5, SET_VLAN_INGRESS_PRIORITY_CMD, 16,
's', 'e', 't', '_',
'i', 'n', 'g', 'r', 'e', 's', 's', '_',
'm', 'a', 'p', 0,
};
static const char name_types[] ALIGN1 = {
VLAN_NAME_TYPE_PLUS_VID, 16,
'V', 'L', 'A', 'N',
'_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
0,
VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22,
'V', 'L', 'A', 'N',
'_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
'_', 'N', 'O', '_', 'P', 'A', 'D', 0,
VLAN_NAME_TYPE_RAW_PLUS_VID, 15,
'D', 'E', 'V',
'_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
0,
VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 20,
'D', 'E', 'V',
'_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
'_', 'N', 'O', '_', 'P', 'A', 'D', 0,
};
int vconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int vconfig_main(int argc, char **argv)
{
struct vlan_ioctl_args ifr;
const char *p;
int fd;
if (argc < 3) {
bb_show_usage();
}
memset(&ifr, 0, sizeof(ifr));
++argv;
p = xfind_str(cmds+2, *argv);
ifr.cmd = *p;
if (argc != p[-1]) {
bb_show_usage();
}
if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */
ifr.u.name_type = *xfind_str(name_types+1, argv[1]);
} else {
strncpy_IFNAMSIZ(ifr.device1, argv[1]);
p = argv[2];
/* I suppose one could try to combine some of the function calls below,
* since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
* (unsigned) int members of a unions. But because of the range checking,
* doing so wouldn't save that much space and would also make maintainence
* more of a pain. */
if (ifr.cmd == SET_VLAN_FLAG_CMD) { /* set_flag */
ifr.u.flag = xatoul_range(p, 0, 1);
/* DM: in order to set reorder header, qos must be set */
ifr.vlan_qos = xatoul_range(argv[3], 0, 7);
} else if (ifr.cmd == ADD_VLAN_CMD) { /* add */
ifr.u.VID = xatoul_range(p, 0, VLAN_GROUP_ARRAY_LEN-1);
} else if (ifr.cmd != DEL_VLAN_CMD) { /* set_{egress|ingress}_map */
ifr.u.skb_priority = xatou(p);
ifr.vlan_qos = xatoul_range(argv[3], 0, 7);
}
}
fd = xsocket(AF_INET, SOCK_STREAM, 0);
ioctl_or_perror_and_die(fd, SIOCSIFVLAN, &ifr,
"ioctl error for %s", *argv);
return 0;
}
|
