void resume_netfront(void)
{
struct netfront_dev_list *list;
for (list = dev_list; list != NULL; list = list->next)
_init_netfront(list->dev, NULL, NULL);
}
struct netfront_dev *init_netfront(char *_nodename, void (*thenetif_rx)(unsigned char* data, int len, void *arg), unsigned char rawmac[6], char **ip)
{
char nodename[256];
struct netfront_dev *dev;
struct netfront_dev_list *ldev = NULL;
struct netfront_dev_list *list = NULL;
static int netfrontends = 0;
if (!_nodename)
snprintf(nodename, sizeof(nodename), "device/vif/%d", netfrontends);
else {
strncpy(nodename, _nodename, sizeof(nodename) - 1);
nodename[sizeof(nodename) - 1] = 0;
}
/* Check if the device is already initialized */
for ( list = dev_list; list != NULL; list = list->next) {
if (strcmp(nodename, list->dev->nodename) == 0) {
list->refcount++;
dev = list->dev;
if (thenetif_rx)
netfront_set_rx_handler(dev, thenetif_rx, NULL);
goto out;
}
}
if (!thenetif_rx)
thenetif_rx = netif_rx;
dev = malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
dev->nodename = strdup(nodename);
#ifdef HAVE_LIBC
dev->fd = -1;
#endif
dev->netif_rx = thenetif_rx;
dev->netif_rx_arg = NULL;
ldev = malloc(sizeof(struct netfront_dev_list));
memset(ldev, 0, sizeof(struct netfront_dev_list));
if (_init_netfront(dev, ldev->rawmac, &(ldev->ip))) {
ldev->dev = dev;
ldev->refcount = 1;
ldev->next = NULL;
if (!dev_list) {
dev_list = ldev;
} else {
for ( list = dev_list; list->next != NULL; list = list->next);
list->next = ldev;
}
netfrontends++;
} else {
free(dev->nodename);
free(dev);
free(ldev);
dev = NULL;
goto err;
}
out:
if (rawmac) {
rawmac[0] = ldev->rawmac[0];
rawmac[1] = ldev->rawmac[1];
rawmac[2] = ldev->rawmac[2];
rawmac[3] = ldev->rawmac[3];
rawmac[4] = ldev->rawmac[4];
rawmac[5] = ldev->rawmac[5];
}
if (ip) {
*ip = malloc(strlen(ldev->ip));
strncpy(*ip, ldev->ip, strlen(ldev->ip));
}
err:
return dev;
}
