int br_refresh()
{
struct bridge *b;
b = bridge_list;
while (b != NULL) {
struct bridge *bnext;
bnext = b->next;
br_nuke_bridge(b);
b = bnext;
}
return br_make_bridge_list();
}
int br_make_bridge_list()
{
int err;
int i;
int ifindices[32];
int num;
num = br_ioctl(BRCTL_GET_BRIDGES, (unsigned long)ifindices, 32);
if (num < 0)
return errno;
bridge_list = NULL;
for (i=0;i<num;i++) {
struct bridge *br;
br = malloc(sizeof(struct bridge));
memset(br, 0, sizeof(struct bridge));
br->ifindex = ifindices[i];
br->firstport = NULL;
br->next = bridge_list;
bridge_list = br;
if ((err = br_read_info(br)) != 0)
goto error_out;
if ((err = br_make_port_list(br)) != 0)
goto error_out;
}
return 0;
error_out:
while (bridge_list != NULL) {
struct bridge *nxt;
nxt = bridge_list->next;
br_nuke_bridge(bridge_list);
bridge_list = nxt;
}
return err;
}
int br_make_bridge_list()
{
int i;
int err;
int ifindices[1024];
int num;
num = br_ioctl(BRCTL_GET_BRIDGES, (unsigned long)ifindices, 1024);
if (num < 0)
return errno;
bridge_list = NULL;
for (i=0;i<num;i++) {
struct bridge *br;
br = br_create_bridge_by_index(ifindices[i]);
if (!br) {
goto error_out;
}
br->next = bridge_list;
bridge_list = br;
}
return 0;
error_out:
while (bridge_list != NULL) {
struct bridge *nxt;
nxt = bridge_list->next;
br_nuke_bridge(bridge_list);
bridge_list = nxt;
}
return err;
}
struct bridge *br_create_bridge_by_index(int index)
{
struct bridge *br;
int err;
br = malloc(sizeof(struct bridge));
if (!br) {
return NULL;
}
memset(br, 0, sizeof(struct bridge));
br->ifindex = index;
br->firstport = NULL;
if ((err = br_read_info(br)) != 0)
goto error_out;
if ((err = br_make_port_list(br)) != 0)
goto error_out;
return br;
error_out:
br_nuke_bridge(br);
return NULL;
}