+++ /dev/null
-/*
- * Copyright (C) 2000 Lennert Buytenhek
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <dirent.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include "libbridge.h"
-#include "libbridge_private.h"
-
-int br_socket_fd = -1;
-
-static int br_init(void)
-{
- if ((br_socket_fd = socket(AF_LOCAL, SOCK_STREAM, 0)) < 0)
- return errno;
- return 0;
-}
-
-static void br_shutdown(void)
-{
- close(br_socket_fd);
- br_socket_fd = -1;
-}
-
-/* If /sys/class/net/XXX/bridge exists then it must be a bridge */
-static int isbridge(const struct dirent *entry)
-{
- char path[SYSFS_PATH_MAX];
- struct stat st;
-
- snprintf(path, SYSFS_PATH_MAX, SYSFS_CLASS_NET "%s/bridge", entry->d_name);
- return stat(path, &st) == 0 && S_ISDIR(st.st_mode);
-}
-
-/*
- * New interface uses sysfs to find bridges
- */
-static int new_foreach_bridge(int (*iterator)(const char *name, void *),
- void *arg)
-{
- struct dirent **namelist;
- int i, count = 0;
-
- count = scandir(SYSFS_CLASS_NET, &namelist, isbridge, alphasort);
- if (count < 0)
- return -1;
-
- for (i = 0; i < count; i++) {
- if (iterator(namelist[i]->d_name, arg))
- break;
- }
-
- for (i = 0; i < count; i++)
- free(namelist[i]);
- free(namelist);
-
- return count;
-}
-
-/*
- * Old interface uses ioctl
- */
-static int old_foreach_bridge(int (*iterator)(const char *, void *),
- void *iarg)
-{
- int i, ret=0, num;
- char ifname[IFNAMSIZ];
- int ifindices[MAX_BRIDGES];
- unsigned long args[3] = { BRCTL_GET_BRIDGES,
- (unsigned long)ifindices, MAX_BRIDGES };
-
- num = ioctl(br_socket_fd, SIOCGIFBR, args);
- if (num < 0) {
- dprintf("Get bridge indices failed: %s\n",
- strerror(errno));
- return -errno;
- }
-
- for (i = 0; i < num; i++) {
- if (!if_indextoname(ifindices[i], ifname)) {
- dprintf("get find name for ifindex %d\n",
- ifindices[i]);
- return -errno;
- }
-
- ++ret;
- if(iterator(ifname, iarg))
- break;
- }
-
- return ret;
-
-}
-
-/*
- * Go over all bridges and call iterator function.
- * if iterator returns non-zero then stop.
- */
-static int br_foreach_bridge(int (*iterator)(const char *, void *),
- void *arg)
-{
- int ret;
-
- ret = new_foreach_bridge(iterator, arg);
- if (ret <= 0)
- ret = old_foreach_bridge(iterator, arg);
-
- return ret;
-}
-
-/*
- * Only used if sysfs is not available.
- */
-static int old_foreach_port(const char *brname,
- int (*iterator)(const char *br, const char *port,
- void *arg),
- void *arg)
-{
- int i, err, count;
- struct ifreq ifr;
- char ifname[IFNAMSIZ];
- int ifindices[MAX_PORTS];
- unsigned long args[4] = { BRCTL_GET_PORT_LIST,
- (unsigned long)ifindices, MAX_PORTS, 0 };
-
- memset(ifindices, 0, sizeof(ifindices));
- strncpy(ifr.ifr_name, brname, IFNAMSIZ);
- ifr.ifr_data = (char *) &args;
-
- err = ioctl(br_socket_fd, SIOCDEVPRIVATE, &ifr);
- if (err < 0) {
- dprintf("list ports for bridge:'%s' failed: %s\n",
- brname, strerror(errno));
- return -errno;
- }
-
- count = 0;
- for (i = 0; i < MAX_PORTS; i++) {
- if (!ifindices[i])
- continue;
-
- if (!if_indextoname(ifindices[i], ifname)) {
- dprintf("can't find name for ifindex:%d\n",
- ifindices[i]);
- continue;
- }
-
- ++count;
- if (iterator(brname, ifname, arg))
- break;
- }
-
- return count;
-}
-
-/*
- * Iterate over all ports in bridge (using sysfs).
- */
-static int br_foreach_port(const char *brname,
- int (*iterator)(const char *br, const char *port, void *arg),
- void *arg)
-{
- int i, count;
- struct dirent **namelist;
- char path[SYSFS_PATH_MAX];
-
- snprintf(path, SYSFS_PATH_MAX, SYSFS_CLASS_NET "%s/brif", brname);
- count = scandir(path, &namelist, 0, alphasort);
- if (count < 0)
- return old_foreach_port(brname, iterator, arg);
-
- for (i = 0; i < count; i++) {
- if (namelist[i]->d_name[0] == '.'
- && (namelist[i]->d_name[1] == '\0'
- || (namelist[i]->d_name[1] == '.'
- && namelist[i]->d_name[2] == '\0')))
- continue;
-
- if (iterator(brname, namelist[i]->d_name, arg))
- break;
- }
- for (i = 0; i < count; i++)
- free(namelist[i]);
- free(namelist);
-
- return count;
-}
projects / openwrt.git / blobdiff