5.1.4. ioctl NET_GET_IF¶
5.1.4.1. Name¶
NET_GET_IF - Read the configuration data of an interface created via - NET_ADD_IF.
5.1.4.2. Synopsis¶
-
NET_GET_IF¶
int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)
5.1.4.3. Arguments¶
fdFile descriptor returned by
open().net_ifpointer to struct
dvb_net_if
5.1.4.4. 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.
5.1.4.5. Return Value¶
On success 0 is returned, and ca_slot_info is filled.
On error -1 is returned, and the errno variable is set
appropriately.
The generic error codes are described at the Generic Error Codes chapter.