diff options
Diffstat (limited to 'busybox/networking/vconfig.c')
-rw-r--r-- | busybox/networking/vconfig.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/busybox/networking/vconfig.c b/busybox/networking/vconfig.c new file mode 100644 index 000000000..bbd29873c --- /dev/null +++ b/busybox/networking/vconfig.c | |||
@@ -0,0 +1,184 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * vconfig implementation for busybox | ||
4 | * | ||
5 | * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation; either version 2 of the License, or | ||
10 | * (at your option) any later version. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
15 | * General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program; if not, write to the Free Software | ||
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
20 | * | ||
21 | */ | ||
22 | |||
23 | /* BB_AUDIT SUSv3 N/A */ | ||
24 | |||
25 | #include <stdlib.h> | ||
26 | #include <unistd.h> | ||
27 | #include <fcntl.h> | ||
28 | #include <sys/ioctl.h> | ||
29 | #include <net/if.h> | ||
30 | #include <string.h> | ||
31 | #include <limits.h> | ||
32 | #include "busybox.h" | ||
33 | |||
34 | /* Stuff from linux/if_vlan.h, kernel version 2.4.23 */ | ||
35 | enum vlan_ioctl_cmds { | ||
36 | ADD_VLAN_CMD, | ||
37 | DEL_VLAN_CMD, | ||
38 | SET_VLAN_INGRESS_PRIORITY_CMD, | ||
39 | SET_VLAN_EGRESS_PRIORITY_CMD, | ||
40 | GET_VLAN_INGRESS_PRIORITY_CMD, | ||
41 | GET_VLAN_EGRESS_PRIORITY_CMD, | ||
42 | SET_VLAN_NAME_TYPE_CMD, | ||
43 | SET_VLAN_FLAG_CMD | ||
44 | }; | ||
45 | enum vlan_name_types { | ||
46 | VLAN_NAME_TYPE_PLUS_VID, /* Name will look like: vlan0005 */ | ||
47 | VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like: eth1.0005 */ | ||
48 | VLAN_NAME_TYPE_PLUS_VID_NO_PAD, /* Name will look like: vlan5 */ | ||
49 | VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, /* Name will look like: eth0.5 */ | ||
50 | VLAN_NAME_TYPE_HIGHEST | ||
51 | }; | ||
52 | |||
53 | struct vlan_ioctl_args { | ||
54 | int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */ | ||
55 | char device1[24]; | ||
56 | |||
57 | union { | ||
58 | char device2[24]; | ||
59 | int VID; | ||
60 | unsigned int skb_priority; | ||
61 | unsigned int name_type; | ||
62 | unsigned int bind_type; | ||
63 | unsigned int flag; /* Matches vlan_dev_info flags */ | ||
64 | } u; | ||
65 | |||
66 | short vlan_qos; | ||
67 | }; | ||
68 | |||
69 | #define VLAN_GROUP_ARRAY_LEN 4096 | ||
70 | #define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */ | ||
71 | |||
72 | /* On entry, table points to the length of the current string plus | ||
73 | * nul terminator plus data length for the subsequent entry. The | ||
74 | * return value is the last data entry for the matching string. */ | ||
75 | static const char *xfind_str(const char *table, const char *str) | ||
76 | { | ||
77 | while (strcasecmp(str, table+1) != 0) { | ||
78 | if (!*(table += table[0])) { | ||
79 | bb_show_usage(); | ||
80 | } | ||
81 | } | ||
82 | return table - 1; | ||
83 | } | ||
84 | |||
85 | static const char cmds[] = { | ||
86 | 4, ADD_VLAN_CMD, 7, | ||
87 | 'a', 'd', 'd', 0, | ||
88 | 3, DEL_VLAN_CMD, 7, | ||
89 | 'r', 'e', 'm', 0, | ||
90 | 3, SET_VLAN_NAME_TYPE_CMD, 17, | ||
91 | 's', 'e', 't', '_', | ||
92 | 'n', 'a', 'm', 'e', '_', | ||
93 | 't', 'y', 'p', 'e', 0, | ||
94 | 4, SET_VLAN_FLAG_CMD, 12, | ||
95 | 's', 'e', 't', '_', | ||
96 | 'f', 'l', 'a', 'g', 0, | ||
97 | 5, SET_VLAN_EGRESS_PRIORITY_CMD, 18, | ||
98 | 's', 'e', 't', '_', | ||
99 | 'e', 'g', 'r', 'e', 's', 's', '_', | ||
100 | 'm', 'a', 'p', 0, | ||
101 | 5, SET_VLAN_INGRESS_PRIORITY_CMD, 16, | ||
102 | 's', 'e', 't', '_', | ||
103 | 'i', 'n', 'g', 'r', 'e', 's', 's', '_', | ||
104 | 'm', 'a', 'p', 0, | ||
105 | }; | ||
106 | |||
107 | static const char name_types[] = { | ||
108 | VLAN_NAME_TYPE_PLUS_VID, 16, | ||
109 | 'V', 'L', 'A', 'N', | ||
110 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D', | ||
111 | 0, | ||
112 | VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22, | ||
113 | 'V', 'L', 'A', 'N', | ||
114 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D', | ||
115 | '_', 'N', 'O', '_', 'P', 'A', 'D', 0, | ||
116 | VLAN_NAME_TYPE_RAW_PLUS_VID, 15, | ||
117 | 'D', 'E', 'V', | ||
118 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D', | ||
119 | 0, | ||
120 | VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 20, | ||
121 | 'D', 'E', 'V', | ||
122 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D', | ||
123 | '_', 'N', 'O', '_', 'P', 'A', 'D', 0, | ||
124 | }; | ||
125 | |||
126 | static const char conf_file_name[] = "/proc/net/vlan/config"; | ||
127 | |||
128 | int vconfig_main(int argc, char **argv) | ||
129 | { | ||
130 | struct vlan_ioctl_args ifr; | ||
131 | const char *p; | ||
132 | int fd; | ||
133 | |||
134 | if (argc < 3) { | ||
135 | bb_show_usage(); | ||
136 | } | ||
137 | |||
138 | /* Don't bother closing the filedes. It will be closed on cleanup. */ | ||
139 | if (open(conf_file_name, O_RDONLY) < 0) { /* Is 802.1q is present? */ | ||
140 | bb_perror_msg_and_die("open %s", conf_file_name); | ||
141 | } | ||
142 | |||
143 | memset(&ifr, 0, sizeof(struct vlan_ioctl_args)); | ||
144 | |||
145 | ++argv; | ||
146 | p = xfind_str(cmds+2, *argv); | ||
147 | ifr.cmd = *p; | ||
148 | if (argc != p[-1]) { | ||
149 | bb_show_usage(); | ||
150 | } | ||
151 | |||
152 | if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */ | ||
153 | ifr.u.name_type = *xfind_str(name_types+1, argv[1]); | ||
154 | } else { | ||
155 | if (strlen(argv[1]) >= IF_NAMESIZE) { | ||
156 | bb_error_msg_and_die("if_name >= %d chars\n", IF_NAMESIZE); | ||
157 | } | ||
158 | strcpy(ifr.device1, argv[1]); | ||
159 | p = argv[2]; | ||
160 | |||
161 | /* I suppose one could try to combine some of the function calls below, | ||
162 | * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized | ||
163 | * (unsigned) int members of a unions. But because of the range checking, | ||
164 | * doing so wouldn't save that much space and would also make maintainence | ||
165 | * more of a pain. */ | ||
166 | if (ifr.cmd == SET_VLAN_FLAG_CMD) { /* set_flag */ | ||
167 | ifr.u.flag = bb_xgetularg10_bnd(p, 0, 1); | ||
168 | } else if (ifr.cmd == ADD_VLAN_CMD) { /* add */ | ||
169 | ifr.u.VID = bb_xgetularg10_bnd(p, 0, VLAN_GROUP_ARRAY_LEN-1); | ||
170 | } else if (ifr.cmd != DEL_VLAN_CMD) { /* set_{egress|ingress}_map */ | ||
171 | ifr.u.skb_priority = bb_xgetularg10_bnd(p, 0, ULONG_MAX); | ||
172 | ifr.vlan_qos = bb_xgetularg10_bnd(argv[3], 0, 7); | ||
173 | } | ||
174 | } | ||
175 | |||
176 | if (((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) | ||
177 | || (ioctl(fd, SIOCSIFVLAN, &ifr) < 0) | ||
178 | ) { | ||
179 | bb_perror_msg_and_die("socket or ioctl error for %s", *argv); | ||
180 | } | ||
181 | |||
182 | return 0; | ||
183 | } | ||
184 | |||