NET_GET_IF — Read the configuration data of an interface created via
NET_ADD_IF.
int ioctl( | int fd, |
| int request, | |
struct dvb_net_if *net_if); |
The NET_GET_IF ioctl uses the interface number given by the
struct dvb_net_if::ifnum field and fills the content of struct dvb_net_if with
the packet ID and encapsulation type used on such interface. If the
interface was not created yet with NET_ADD_IF, it will return -1 and
fill the errno with EINVAL
error code.
RETURN VALUE
On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.