[3320] | 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 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
| 8 | */
|
---|
| 9 |
|
---|
| 10 | /* BB_AUDIT SUSv3 N/A */
|
---|
| 11 |
|
---|
| 12 | #include "libbb.h"
|
---|
| 13 | #include <net/if.h>
|
---|
| 14 |
|
---|
| 15 | /* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
|
---|
| 16 | enum vlan_ioctl_cmds {
|
---|
| 17 | ADD_VLAN_CMD,
|
---|
| 18 | DEL_VLAN_CMD,
|
---|
| 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,
|
---|
| 24 | SET_VLAN_FLAG_CMD
|
---|
| 25 | };
|
---|
| 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
|
---|
| 32 | };
|
---|
| 33 |
|
---|
| 34 | struct vlan_ioctl_args {
|
---|
| 35 | int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */
|
---|
| 36 | char device1[24];
|
---|
| 37 |
|
---|
| 38 | union {
|
---|
| 39 | char device2[24];
|
---|
| 40 | int VID;
|
---|
| 41 | unsigned int skb_priority;
|
---|
| 42 | unsigned int name_type;
|
---|
| 43 | unsigned int bind_type;
|
---|
| 44 | unsigned int flag; /* Matches vlan_dev_info flags */
|
---|
| 45 | } u;
|
---|
| 46 |
|
---|
| 47 | short vlan_qos;
|
---|
| 48 | };
|
---|
| 49 |
|
---|
| 50 | #define VLAN_GROUP_ARRAY_LEN 4096
|
---|
| 51 | #define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
|
---|
| 52 |
|
---|
| 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)
|
---|
| 57 | {
|
---|
| 58 | while (strcasecmp(str, table+1) != 0) {
|
---|
| 59 | table += table[0];
|
---|
| 60 | if (!*table) {
|
---|
| 61 | bb_show_usage();
|
---|
| 62 | }
|
---|
| 63 | }
|
---|
| 64 | return table - 1;
|
---|
| 65 | }
|
---|
| 66 |
|
---|
| 67 | static const char cmds[] ALIGN1 = {
|
---|
| 68 | 4, ADD_VLAN_CMD, 7,
|
---|
| 69 | 'a', 'd', 'd', 0,
|
---|
| 70 | 3, DEL_VLAN_CMD, 7,
|
---|
| 71 | 'r', 'e', 'm', 0,
|
---|
| 72 | 3, SET_VLAN_NAME_TYPE_CMD, 17,
|
---|
| 73 | 's', 'e', 't', '_',
|
---|
| 74 | 'n', 'a', 'm', 'e', '_',
|
---|
| 75 | 't', 'y', 'p', 'e', 0,
|
---|
| 76 | 5, SET_VLAN_FLAG_CMD, 12,
|
---|
| 77 | 's', 'e', 't', '_',
|
---|
| 78 | 'f', 'l', 'a', 'g', 0,
|
---|
| 79 | 5, SET_VLAN_EGRESS_PRIORITY_CMD, 18,
|
---|
| 80 | 's', 'e', 't', '_',
|
---|
| 81 | 'e', 'g', 'r', 'e', 's', 's', '_',
|
---|
| 82 | 'm', 'a', 'p', 0,
|
---|
| 83 | 5, SET_VLAN_INGRESS_PRIORITY_CMD, 16,
|
---|
| 84 | 's', 'e', 't', '_',
|
---|
| 85 | 'i', 'n', 'g', 'r', 'e', 's', 's', '_',
|
---|
| 86 | 'm', 'a', 'p', 0,
|
---|
| 87 | };
|
---|
| 88 |
|
---|
| 89 | static const char name_types[] ALIGN1 = {
|
---|
| 90 | VLAN_NAME_TYPE_PLUS_VID, 16,
|
---|
| 91 | 'V', 'L', 'A', 'N',
|
---|
| 92 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
|
---|
| 93 | 0,
|
---|
| 94 | VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22,
|
---|
| 95 | 'V', 'L', 'A', 'N',
|
---|
| 96 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
|
---|
| 97 | '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
|
---|
| 98 | VLAN_NAME_TYPE_RAW_PLUS_VID, 15,
|
---|
| 99 | 'D', 'E', 'V',
|
---|
| 100 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
|
---|
| 101 | 0,
|
---|
| 102 | VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 20,
|
---|
| 103 | 'D', 'E', 'V',
|
---|
| 104 | '_', 'P', 'L', 'U', 'S', '_', 'V', 'I', 'D',
|
---|
| 105 | '_', 'N', 'O', '_', 'P', 'A', 'D', 0,
|
---|
| 106 | };
|
---|
| 107 |
|
---|
| 108 | static const char conf_file_name[] ALIGN1 = "/proc/net/vlan/config";
|
---|
| 109 |
|
---|
| 110 | int vconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 111 | int vconfig_main(int argc, char **argv)
|
---|
| 112 | {
|
---|
| 113 | struct vlan_ioctl_args ifr;
|
---|
| 114 | const char *p;
|
---|
| 115 | int fd;
|
---|
| 116 |
|
---|
| 117 | if (argc < 3) {
|
---|
| 118 | bb_show_usage();
|
---|
| 119 | }
|
---|
| 120 |
|
---|
| 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);
|
---|
| 124 |
|
---|
| 125 | memset(&ifr, 0, sizeof(ifr));
|
---|
| 126 |
|
---|
| 127 | ++argv;
|
---|
| 128 | p = xfind_str(cmds+2, *argv);
|
---|
| 129 | ifr.cmd = *p;
|
---|
| 130 | if (argc != p[-1]) {
|
---|
| 131 | bb_show_usage();
|
---|
| 132 | }
|
---|
| 133 |
|
---|
| 134 | if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */
|
---|
| 135 | ifr.u.name_type = *xfind_str(name_types+1, argv[1]);
|
---|
| 136 | } else {
|
---|
| 137 | strncpy_IFNAMSIZ(ifr.device1, argv[1]);
|
---|
| 138 | p = argv[2];
|
---|
| 139 |
|
---|
| 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
|
---|
| 144 | * more of a pain. */
|
---|
| 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);
|
---|
| 154 | }
|
---|
| 155 | }
|
---|
| 156 |
|
---|
| 157 | fd = xsocket(AF_INET, SOCK_STREAM, 0);
|
---|
| 158 | ioctl_or_perror_and_die(fd, SIOCSIFVLAN, &ifr,
|
---|
| 159 | "ioctl error for %s", *argv);
|
---|
| 160 |
|
---|
| 161 | return 0;
|
---|
| 162 | }
|
---|