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function old new delta xfind_str 45 46 +1 vconfig_main 228 223 -5 packed_usage 28980 28954 -26 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* vconfig implementation for busybox
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*
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* Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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/* BB_AUDIT SUSv3 N/A */
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//usage:#define vconfig_trivial_usage
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//usage: "COMMAND [OPTIONS]"
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//usage:#define vconfig_full_usage "\n\n"
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//usage: "Create and remove virtual ethernet devices\n"
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//usage: "\n add IFACE VLAN_ID"
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//usage: "\n rem VLAN_NAME"
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//usage: "\n set_flag IFACE 0|1 VLAN_QOS"
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//usage: "\n set_egress_map VLAN_NAME SKB_PRIO VLAN_QOS"
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//usage: "\n set_ingress_map VLAN_NAME SKB_PRIO VLAN_QOS"
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//usage: "\n set_name_type NAME_TYPE"
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#include "libbb.h"
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#include <net/if.h>
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/* Stuff from linux/if_vlan.h, kernel version 2.4.23 */
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enum vlan_ioctl_cmds {
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ADD_VLAN_CMD,
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DEL_VLAN_CMD,
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SET_VLAN_INGRESS_PRIORITY_CMD,
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SET_VLAN_EGRESS_PRIORITY_CMD,
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GET_VLAN_INGRESS_PRIORITY_CMD,
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GET_VLAN_EGRESS_PRIORITY_CMD,
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SET_VLAN_NAME_TYPE_CMD,
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SET_VLAN_FLAG_CMD
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};
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enum vlan_name_types {
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VLAN_NAME_TYPE_PLUS_VID, /* Name will look like: vlan0005 */
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VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like: eth1.0005 */
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VLAN_NAME_TYPE_PLUS_VID_NO_PAD, /* Name will look like: vlan5 */
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VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, /* Name will look like: eth0.5 */
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VLAN_NAME_TYPE_HIGHEST
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};
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struct vlan_ioctl_args {
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int cmd; /* Should be one of the vlan_ioctl_cmds enum above. */
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char device1[24];
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union {
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char device2[24];
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int VID;
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unsigned int skb_priority;
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unsigned int name_type;
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unsigned int bind_type;
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unsigned int flag; /* Matches vlan_dev_info flags */
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} u;
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short vlan_qos;
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};
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#define VLAN_GROUP_ARRAY_LEN 4096
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#define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
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/* On entry, table points to the length of the current string
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* plus NUL terminator plus data length for the subsequent entry.
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* The return value is the last data entry for the matching string. */
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static const char *xfind_str(const char *table, const char *str)
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{
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while (strcasecmp(str, table + 1) != 0) {
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if (!table[0])
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bb_show_usage();
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table += table[0];
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}
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return table - 1;
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}
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static const char cmds[] ALIGN1 = {
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4, ADD_VLAN_CMD, 7,
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'a','d','d',0,
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3, DEL_VLAN_CMD, 7,
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'r','e','m',0,
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3, SET_VLAN_NAME_TYPE_CMD, 17,
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's','e','t','_','n','a','m','e','_','t','y','p','e',0,
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5, SET_VLAN_FLAG_CMD, 12,
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's','e','t','_','f','l','a','g',0,
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5, SET_VLAN_EGRESS_PRIORITY_CMD, 18,
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's','e','t','_','e','g','r','e','s','s','_','m','a','p',0,
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5, SET_VLAN_INGRESS_PRIORITY_CMD, 0,
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's','e','t','_','i','n','g','r','e','s','s','_','m','a','p',0,
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};
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static const char name_types[] ALIGN1 = {
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VLAN_NAME_TYPE_PLUS_VID, 16,
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'V','L','A','N','_','P','L','U','S','_','V','I','D',0,
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VLAN_NAME_TYPE_PLUS_VID_NO_PAD, 22,
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'V','L','A','N','_','P','L','U','S','_','V','I','D','_','N','O','_','P','A','D',0,
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VLAN_NAME_TYPE_RAW_PLUS_VID, 15,
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'D','E','V','_','P','L','U','S','_','V','I','D',0,
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VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, 0,
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'D','E','V','_','P','L','U','S','_','V','I','D','_','N','O','_','P','A','D',0,
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};
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int vconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int vconfig_main(int argc, char **argv)
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{
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struct vlan_ioctl_args ifr;
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const char *p;
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int fd;
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memset(&ifr, 0, sizeof(ifr));
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++argv;
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if (!argv[0])
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bb_show_usage();
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p = xfind_str(cmds + 2, argv[0]);
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ifr.cmd = *p;
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if (argc != p[-1])
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bb_show_usage();
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if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) {
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/* set_name_type */
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ifr.u.name_type = *xfind_str(name_types + 1, argv[1]);
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} else {
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strncpy_IFNAMSIZ(ifr.device1, argv[1]);
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p = argv[2];
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/* I suppose one could try to combine some of the function calls below,
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* since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
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* (unsigned) int members of a unions. But because of the range checking,
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* doing so wouldn't save that much space and would also make maintainence
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* more of a pain.
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*/
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if (ifr.cmd == SET_VLAN_FLAG_CMD) {
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/* set_flag */
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ifr.u.flag = xatou_range(p, 0, 1);
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/* DM: in order to set reorder header, qos must be set */
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ifr.vlan_qos = xatou_range(argv[3], 0, 7);
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} else if (ifr.cmd == ADD_VLAN_CMD) {
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/* add */
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ifr.u.VID = xatou_range(p, 0, VLAN_GROUP_ARRAY_LEN - 1);
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} else if (ifr.cmd != DEL_VLAN_CMD) {
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/* set_{egress|ingress}_map */
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ifr.u.skb_priority = xatou(p);
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ifr.vlan_qos = xatou_range(argv[3], 0, 7);
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}
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}
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fd = xsocket(AF_INET, SOCK_STREAM, 0);
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ioctl_or_perror_and_die(fd, SIOCSIFVLAN, &ifr,
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"ioctl error for %s", argv[0]);
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return 0;
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}
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