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-rw-r--r--toys/other/vconfig.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/toys/other/vconfig.c b/toys/other/vconfig.c
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+/* vi: set sw=4 ts=4:
+ *
+ * vconfig.c - Creates virtual ethernet devices.
+ *
+ * Copyright 2012 Sandeep Sharma <sandeep.jack2756@gmail.com>, Kyungwan Han <asura321@gmail.com>
+ *
+ * Not in SUSv4.
+
+USE_VCONFIG(NEWTOY(vconfig, "<2>4", TOYFLAG_NEEDROOT|TOYFLAG_SBIN))
+
+config VCONFIG
+ bool "vconfig"
+ default y
+ help
+ usage: vconfig COMMAND [OPTIONS]
+
+ add [interface-name] [vlan_id]
+ rem [vlan-name]
+ set_flag [interface-name] [flag-num] [0 | 1]
+ set_egress_map [vlan-name] [skb_priority] [vlan_qos]
+ set_ingress_map [vlan-name] [skb_priority] [vlan_qos]
+ set_name_type [name-type]
+
+ Create and remove virtual ethernet devices
+
+*/
+
+#include "toys.h"
+#include "toynet.h"
+#include <linux/if_vlan.h>
+#include <linux/sockios.h>
+/*
+ * convert str to long within given range
+ */
+static int strtol_range(char *str, int min, int max)
+{
+ char *endptr = NULL;
+ errno = 0;
+ long ret_value = strtol(str, &endptr, 10);
+ if(errno) perror_exit("Invalid num %s", str);
+ else {
+ if(endptr && (*endptr != '\0' || endptr == str))
+ perror_exit("Not a valid num %s", str);
+ }
+ if(ret_value >= min && ret_value <= max) return ret_value;
+ else perror_exit("Number %s is not in valid [%d-%d] Range\n", str, min, max);
+}
+/*
+ * vconfig main function.
+ */
+void vconfig_main(void)
+{
+#define MAX_VLAN_ID 4094
+ struct vlan_ioctl_args request;
+ char *interface_name = NULL;
+ unsigned int name_type = VLAN_NAME_TYPE_PLUS_VID;
+ char *cmd;
+ int fd = 0;
+ int vlan_id = 0;
+
+ if((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) perror_exit("Can't open socket"); //Use socket instead of open
+ memset(&request, 0, sizeof(struct vlan_ioctl_args)); // Null set all the VLAN info's.
+ cmd = toys.optargs[0]; // Fetch cmd and proceed.
+ if(strcmp(cmd, "set_name_type") == 0) {
+ if(strcmp(toys.optargs[1], "VLAN_PLUS_VID") == 0) {
+ name_type = VLAN_NAME_TYPE_PLUS_VID;
+ }
+ else if(strcmp(toys.optargs[1], "VLAN_PLUS_VID_NO_PAD") == 0) {
+ name_type = VLAN_NAME_TYPE_PLUS_VID_NO_PAD;
+ }
+ else if(strcmp(toys.optargs[1], "DEV_PLUS_VID") == 0) {
+ name_type = VLAN_NAME_TYPE_RAW_PLUS_VID;
+ }
+ else if(strcmp(toys.optargs[1], "DEV_PLUS_VID_NO_PAD") == 0) {
+ name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
+ }
+ else perror_exit("ERROR: Invalid name type");
+
+ request.u.name_type = name_type;
+ request.cmd = SET_VLAN_NAME_TYPE_CMD;
+ if(ioctl(fd, SIOCSIFVLAN, &request) == 0) {
+ xprintf("Successful set_name_type for VLAN subsystem\n");
+ exit(EXIT_SUCCESS);
+ }
+ else perror_exit("Failed to set set_name_type:");
+ }
+ else {
+ interface_name = toys.optargs[1]; // Store interface name.
+ if(strlen(interface_name) > 15) perror_exit("ERROR:if_name length can not be greater than 15");
+ strcpy(request.device1, interface_name); //we had exited if interface_name length greater than 15, so here it never overflows.
+ }
+
+ if(strcmp(cmd, "add") == 0) {
+ request.cmd = ADD_VLAN_CMD;
+ if(toys.optargs[2]) vlan_id = strtol_range(toys.optargs[2], 0, MAX_VLAN_ID);
+ else vlan_id = 0;
+ request.u.VID = vlan_id;
+ }
+ else if(strcmp(cmd, "rem") == 0) {
+ request.cmd = DEL_VLAN_CMD;
+ }
+ else if(strcmp(cmd, "set_flag") == 0) {
+ request.cmd = SET_VLAN_FLAG_CMD;
+ if(toys.optargs[2]) request.u.flag = strtol_range(toys.optargs[2], 0, 1);
+ else request.u.flag = 0;
+ if(toys.optargs[3]) request.vlan_qos = strtol_range(toys.optargs[3], 0, 7);
+ else request.vlan_qos = 0;
+ }
+ else if(strcmp(cmd, "set_egress_map") == 0) {
+ request.cmd = SET_VLAN_EGRESS_PRIORITY_CMD;
+ if(toys.optargs[2]) request.u.skb_priority = strtol_range(toys.optargs[2], 0, INT_MAX);
+ else request.u.skb_priority = 0;
+ if(toys.optargs[3]) request.vlan_qos = strtol_range(toys.optargs[3], 0, 7);
+ else request.vlan_qos = 0;
+ }
+ else if(strcmp(cmd, "set_ingress_map") == 0) {
+ request.cmd = SET_VLAN_INGRESS_PRIORITY_CMD;
+ if(toys.optargs[2]) request.u.skb_priority = strtol_range(toys.optargs[2], 0, INT_MAX);
+ else request.u.skb_priority = 0;
+ if(toys.optargs[3]) request.vlan_qos = strtol_range(toys.optargs[3], 0, 7); //To set flag we must have to set vlan_qos
+ else request.vlan_qos = 0;
+ }
+ else {
+ xclose(fd);
+ perror_exit("Unknown command %s", cmd);
+ }
+ if(ioctl(fd, SIOCSIFVLAN, &request) == 0) {
+ if(strcmp(cmd, "add") == 0 && vlan_id == 1)
+ xprintf("WARNING: VLAN 1 does not work with many switches,consider another number if you have problems.\n");
+ xprintf("Successful %s on device %s\n", cmd, interface_name);
+ }
+ else perror_exit("Failed to %s, on vlan subsystem %s.", cmd, interface_name);
+}