/* brctl.c - ethernet bridge control * * Copyright 2013 Ashwini Kumar <ak.ashwini1981@gmail.com> * Copyright 2013 Kyungwan Han <asura321@gmail.com> * * No Standard USE_BRCTL(NEWTOY(brctl, "<1", TOYFLAG_USR|TOYFLAG_SBIN)) config BRCTL bool "brctl" default n help usage: brctl COMMAND [BRIDGE [INTERFACE]] Manage ethernet bridges Commands: show Show a list of bridges addbr BRIDGE Create BRIDGE delbr BRIDGE Delete BRIDGE addif BRIDGE IFACE Add IFACE to BRIDGE delif BRIDGE IFACE Delete IFACE from BRIDGE setageing BRIDGE TIME Set ageing time setfd BRIDGE TIME Set bridge forward delay sethello BRIDGE TIME Set hello time setmaxage BRIDGE TIME Set max message age setpathcost BRIDGE PORT COST Set path cost setportprio BRIDGE PORT PRIO Set port priority setbridgeprio BRIDGE PRIO Set bridge priority stp BRIDGE [1/yes/on|0/no/off] STP on/off */ #define FOR_brctl #include "toys.h" #include <linux/if_bridge.h> GLOBALS( int sockfd; ) #define MAX_BRIDGES 1024 //same is no of ports supported static void get_ports(char *bridge, int *indices) { struct ifreq ifr; int ifindices[MAX_BRIDGES]; unsigned long args[4] = { BRCTL_GET_PORT_LIST, (unsigned long) ifindices, MAX_BRIDGES, 0 }; memset(ifindices, 0, MAX_BRIDGES); args[1] = (unsigned long)ifindices; strncpy(ifr.ifr_name, bridge, IFNAMSIZ); ifr.ifr_data = (char *)args; xioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr); if (indices) memcpy(indices, ifindices, sizeof(ifindices)); } void get_br_info(char *bridge, struct __bridge_info *info) { struct ifreq ifr; unsigned long args[4] = { BRCTL_GET_BRIDGE_INFO, (unsigned long) info, 0, 0 }; memset(info, 0, sizeof(*info)); strncpy(ifr.ifr_name, bridge, IFNAMSIZ); ifr.ifr_data = (char *)args; if (ioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr) < 0) { perror_msg("%s: can't get info %s\n", bridge, strerror(errno)); return; } } void br_show(char **argv) { struct __bridge_info info; int num, cnt, i, j, ifindices[MAX_BRIDGES], pindices[MAX_BRIDGES]; unsigned long args[4] = { BRCTL_GET_BRIDGES, (unsigned long)ifindices, MAX_BRIDGES,0 }; char br[IF_NAMESIZE], ifn[IF_NAMESIZE]; num = ioctl(TT.sockfd, SIOCGIFBR, args); //ret is num of bridges found if (num < 0) error_exit("get bridges fail"); printf("bridge name\tbridge id\t\tSTP enabled\tinterfaces\n"); for (i = 0; i < num; i++) { unsigned char *id; if (!if_indextoname(ifindices[i], br)) perror_exit("interface not found"); get_br_info(br, &info); id = (unsigned char*)&(info.bridge_id); printf("%s\t\t",br); printf("%.2x%.2x.%.2x%.2x%.2x%.2x%.2x%.2x", id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]); printf("\t%s\t\t",(info.stp_enabled)?"yes" : "no"); memset(pindices, 0, sizeof(pindices)); get_ports(br, pindices); for (j = 0, cnt = 0; j < MAX_BRIDGES; j++) { if (!pindices[j]) continue; if (!if_indextoname(pindices[j], ifn)) { error_msg("no name for index :%d", pindices[j]); continue; } if (cnt) printf("\n\t\t\t\t\t\t\t"); printf("%s", ifn); cnt++; } xputc('\n'); } } void br_addbr(char **argv) { char br[IFNAMSIZ]; unsigned long args[4] = {BRCTL_ADD_BRIDGE, (unsigned long) br, 0, 0}; #ifdef SIOCBRADDBR xioctl(TT.sockfd, SIOCBRADDBR, argv[0]); #else strncpy(br, argv[0], IFNAMSIZ); xioctl(TT.sockfd, SIOCSIFBR, args); #endif } void br_delbr(char **argv) { char br[IFNAMSIZ]; unsigned long args[4] = {BRCTL_DEL_BRIDGE, (unsigned long) br, 0, 0}; #ifdef SIOCBRDELBR xioctl(TT.sockfd, SIOCBRDELBR, argv[0]); #else strncpy(br, argv[0], IFNAMSIZ); xioctl(TT.sockfd, SIOCSIFBR, args); #endif } void br_addif(char **argv) { int index; struct ifreq ifr; unsigned long args[4] = {BRCTL_ADD_IF, 0, 0, 0}; if (!(index = if_nametoindex(argv[1]))) perror_exit("interface %s", argv[1]); #ifdef SIOCBRADDIF ifr.ifr_ifindex = index; xioctl(TT.sockfd, SIOCBRADDIF, &ifr); #else args[1] = index; strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); ifr.ifr_data = (char *)args; xioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr); #endif } void br_delif(char **argv) { int index; struct ifreq ifr; unsigned long args[4] = {BRCTL_DEL_IF, 0, 0, 0}; if (!(index = if_nametoindex(argv[1]))) perror_exit("interface %s",argv[1]); #ifdef SIOCBRDELIF ifr.ifr_ifindex = ifindex; xioctl(TT.sockfd, SIOCBRDELIF, &ifr); #else args[1] = index; strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); ifr.ifr_data = (char *)args; xioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr); #endif } static void strtotimeval(struct timeval *tv, char *time) { double secs; if (sscanf(time, "%lf", &secs) != 1) error_exit("time format not proper"); tv->tv_sec = secs; tv->tv_usec = 1000000 * (secs - tv->tv_sec); } static unsigned long tv_to_jify(struct timeval *tv) { unsigned long long jify; jify = 1000000ULL * tv->tv_sec + tv->tv_usec; return (jify/10000); } void set_time(char *br, unsigned long cmd, unsigned long val) { struct ifreq ifr; unsigned long args[4] = {cmd, val, 0, 0}; strncpy(ifr.ifr_name, br, IFNAMSIZ); ifr.ifr_data = (char *)args; xioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr); } void br_set_ageing_time(char **argv) { struct timeval tv; strtotimeval(&tv, argv[1]); set_time(argv[0], BRCTL_SET_AGEING_TIME, tv_to_jify(&tv)); } void br_set_fwd_delay(char **argv) { struct timeval tv; strtotimeval(&tv, argv[1]); set_time(argv[0], BRCTL_SET_BRIDGE_FORWARD_DELAY, tv_to_jify(&tv)); } void br_set_hello_time(char **argv) { struct timeval tv; strtotimeval(&tv, argv[1]); set_time(argv[0], BRCTL_SET_BRIDGE_HELLO_TIME, tv_to_jify(&tv)); } void br_set_max_age(char **argv) { struct timeval tv; strtotimeval(&tv, argv[1]); set_time(argv[0], BRCTL_SET_BRIDGE_MAX_AGE, tv_to_jify(&tv)); } void br_set_bridge_prio(char **argv) { int prio; if (sscanf(argv[1], "%i", &prio) != 1) error_exit("prio not proper"); set_time(argv[0], BRCTL_SET_BRIDGE_PRIORITY, prio); } void br_set_stp(char **argv) { int i; struct stp { char *n; int set; } ss[] = {{"1", 1}, {"yes", 1},{"on", 1}, {"0", 0}, {"no", 0},{"off", 0}}; for (i = 0; i < ARRAY_LEN(ss); i++) { if (!strcmp(ss[i].n, argv[1])) break; } if (i >= ARRAY_LEN(ss)) error_exit("invalid stp state"); set_time(argv[0], BRCTL_SET_BRIDGE_STP_STATE, ss[i].set); } void set_cost_prio(char *br, char *port, unsigned long cmd, unsigned long val) { struct ifreq ifr; int i, index, pindices[MAX_BRIDGES]; unsigned long args[4] = {cmd, 0, val, 0}; if (!(index = if_nametoindex(port))) error_exit("invalid port"); memset(pindices, 0, sizeof(pindices)); get_ports(br, pindices); for (i = 0; i < MAX_BRIDGES; i++) { if (index == pindices[i]) break; } if (i >= MAX_BRIDGES) error_exit("%s not in bridge", port); args[1] = i; strncpy(ifr.ifr_name, br, IFNAMSIZ); ifr.ifr_data = (char *)args; xioctl(TT.sockfd, SIOCDEVPRIVATE, &ifr); } void br_set_path_cost(char **argv) { int cost; cost = atolx_range(argv[2], 0, INT_MAX); set_cost_prio(argv[0], argv[1], BRCTL_SET_PATH_COST, cost); } void br_set_port_prio(char **argv) { int prio; prio = atolx_range(argv[2], 0, INT_MAX); set_cost_prio(argv[0], argv[1], BRCTL_SET_PORT_PRIORITY, prio); } void brctl_main(void) { int i; struct cmds { char *cmd; int nargs; void (*f)(char **argv); } cc[] = {{"show", 0, br_show}, {"addbr", 1, br_addbr}, {"delbr", 1, br_delbr}, {"addif", 2, br_addif}, {"delif", 2, br_delif}, {"setageing", 2, br_set_ageing_time}, {"setfd", 2, br_set_fwd_delay}, {"sethello", 2, br_set_hello_time}, {"setmaxage", 2, br_set_max_age}, {"setpathcost", 3, br_set_path_cost}, {"setportprio", 3, br_set_port_prio}, {"setbridgeprio", 2, br_set_bridge_prio}, {"stp", 2, br_set_stp}, }; TT.sockfd = xsocket(AF_INET, SOCK_STREAM, 0); while (*toys.optargs) { for (i = 0; i < ARRAY_LEN(cc); i++) { struct cmds *t = cc + i; if (strcmp(t->cmd, *toys.optargs)) continue; toys.optargs++, toys.optc--; if (toys.optc < t->nargs) { toys.exithelp++; error_exit("check args"); } t->f(toys.optargs); toys.optargs += t->nargs; toys.optc -= t->nargs; break; } if (i == ARRAY_LEN(cc)) { toys.exithelp++; error_exit("invalid option '%s'", *toys.optargs); } } xclose(TT.sockfd); }