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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <strings.h>
#include <sys/ioctl.h>
#include <linux/if_vlan.h>
#include <linux/sockios.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "busybox.h"
int vconfig_main(int argc, char** argv) {
int fd;
struct vlan_ioctl_args if_request;
char* cmd = NULL;
char* if_name = NULL;
unsigned int vid = 0;
unsigned int skb_priority;
unsigned short vlan_qos;
unsigned int nm_type = VLAN_NAME_TYPE_PLUS_VID;
char* conf_file_name = "/proc/net/vlan/config";
memset(&if_request, 0, sizeof(struct vlan_ioctl_args));
if ((argc < 3) || (argc > 5)) {
error_msg_and_die("Expecting argc to be 3-5, inclusive. Was: %d\n",argc);
}
else {
cmd = argv[1];
if (strcasecmp(cmd, "set_name_type") == 0) {
if (strcasecmp(argv[2], "VLAN_PLUS_VID") == 0) {
nm_type = VLAN_NAME_TYPE_PLUS_VID;
}
else if (strcasecmp(argv[2], "VLAN_PLUS_VID_NO_PAD") == 0) {
nm_type = VLAN_NAME_TYPE_PLUS_VID_NO_PAD;
}
else if (strcasecmp(argv[2], "DEV_PLUS_VID") == 0) {
nm_type = VLAN_NAME_TYPE_RAW_PLUS_VID;
}
else if (strcasecmp(argv[2], "DEV_PLUS_VID_NO_PAD") == 0) {
nm_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
}
else {
error_msg_and_die("Invalid name type.\n");
}
if_request.u.name_type = nm_type;
}
else {
if_name = argv[2];
if (strlen(if_name) > 15) {
error_msg_and_die("ERROR: if_name must be 15 characters or less.\n");
}
strcpy(if_request.device1, if_name);
}
if (argc == 4) {
vid = atoi(argv[3]);
if_request.u.VID = vid;
}
if (argc == 5) {
skb_priority = atoi(argv[3]);
vlan_qos = atoi(argv[4]);
if_request.u.skb_priority = skb_priority;
if_request.vlan_qos = vlan_qos;
}
}
// Open up the /proc/vlan/config
if ((fd = open(conf_file_name, O_RDONLY)) < 0) {
error_msg("WARNING: Could not open /proc/net/vlan/config. Maybe you need to load the 8021q module, or maybe you are not using PROCFS??\n");
}
else {
close(fd);
}
/* We use sockets now, instead of the file descriptor */
if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
error_msg_and_die("FATAL: Couldn't open a socket..go figure!\n");
}
/* add */
if (strcasecmp(cmd, "add") == 0) {
if_request.cmd = ADD_VLAN_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to add VLAN #%u to IF -:%s:- error: %s\n",
vid, if_name, strerror(errno));
}
else {
printf("Added VLAN with VID == %u to IF -:%s:-\n", vid, if_name);
if (vid == 1) {
error_msg("WARNING: VLAN 1 does not work with many switches,\nconsider another number if you have problems.\n");
}
}
}//if
else if (strcasecmp(cmd, "rem") == 0) {
if_request.cmd = DEL_VLAN_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to remove VLAN -:%s:- error: %s\n",
if_name, strerror(errno));
}
else {
printf("Removed VLAN -:%s:-\n", if_name);
}
}//if
else if (strcasecmp(cmd, "set_egress_map") == 0) {
if_request.cmd = SET_VLAN_EGRESS_PRIORITY_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to set egress map on device -:%s:- error: %s\n",
if_name, strerror(errno));
}
else {
printf("Set egress mapping on device -:%s:- "
"Should be visible in /proc/net/vlan/%s\n",
if_name, if_name);
}
}
else if (strcasecmp(cmd, "set_ingress_map") == 0) {
if_request.cmd = SET_VLAN_INGRESS_PRIORITY_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to set ingress map on device -:%s:- error: %s\n",
if_name, strerror(errno));
}
else {
printf("Set ingress mapping on device -:%s:- "
"Should be visible in /proc/net/vlan/%s\n",
if_name, if_name);
}
}
else if (strcasecmp(cmd, "set_flag") == 0) {
if_request.cmd = SET_VLAN_FLAG_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to set flag on device -:%s:- error: %s\n",
if_name, strerror(errno));
}
else {
printf("Set flag on device -:%s:- "
"Should be visible in /proc/net/vlan/%s\n",
if_name, if_name);
}
}
else if (strcasecmp(cmd, "set_name_type") == 0) {
if_request.cmd = SET_VLAN_NAME_TYPE_CMD;
if (ioctl(fd, SIOCSIFVLAN, &if_request) < 0) {
error_msg("ERROR: trying to set name type for VLAN subsystem, error: %s\n",
strerror(errno));
}
else {
printf("Set name-type for VLAN subsystem."
" Should be visible in /proc/net/vlan/config\n");
}
}
else {
error_msg_and_die("Unknown command -:%s:-\n", cmd);
}
return 0;
}/* main */
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