6.3. ioctl NET_GET_IF¶
6.3.1. Name¶
NET_GET_IF - Read the configuration data of an interface created via - NET_ADD_IF.
6.3.3. Arguments¶
fd- File descriptor returned by open().
request- FE_SET_TONE
net_if- pointer to struct dvb_net_if
6.3.4. Description¶
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.
6.3.5. 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.