diff options
Diffstat (limited to 'toys/other/vconfig.c')
| -rw-r--r-- | toys/other/vconfig.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/toys/other/vconfig.c b/toys/other/vconfig.c new file mode 100644 index 00000000..92d9d7f0 --- /dev/null +++ b/toys/other/vconfig.c @@ -0,0 +1,133 @@ +/* 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); +} |