/* 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 IFACE VLAN_ID" //usage: "\n rem VLAN_NAME" //usage: "\n set_flag IFACE 0|1 VLAN_QOS" //usage: "\n set_egress_map VLAN_NAME SKB_PRIO VLAN_QOS" //usage: "\n set_ingress_map VLAN_NAME SKB_PRIO 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) { if (!table[0]) bb_show_usage(); table += table[0]; } 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, 0, '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, 0, '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; memset(&ifr, 0, sizeof(ifr)); ++argv; if (!argv[0]) bb_show_usage(); p = xfind_str(cmds + 2, argv[0]); 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 = xatou_range(p, 0, 1); /* DM: in order to set reorder header, qos must be set */ ifr.vlan_qos = xatou_range(argv[3], 0, 7); } else if (ifr.cmd == ADD_VLAN_CMD) { /* add */ ifr.u.VID = xatou_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 = xatou_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[0]); return 0; }