include/uapi/linux/udp.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/udp.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/udp.h
Extension
.h
Size
1869 bytes
Lines
51
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct udphdr {
	__be16	source;
	__be16	dest;
	__be16	len;
	__sum16	check;
};

/* UDP socket options */
#define UDP_CORK	1	/* Never send partially complete segments */
/* Deprecated, reserved for UDPLITE_SEND_CSCOV 10 */
/* Deprecated, reserved for UDPLITE_RECV_CSCOV 11 */
#define UDP_ENCAP	100	/* Set the socket to accept encapsulated packets */
#define UDP_NO_CHECK6_TX 101	/* Disable sending checksum for UDP6X */
#define UDP_NO_CHECK6_RX 102	/* Disable accepting checksum for UDP6 */
#define UDP_SEGMENT	103	/* Set GSO segmentation size */
#define UDP_GRO		104	/* This socket can receive UDP GRO packets */

/* UDP encapsulation types */
#define UDP_ENCAP_ESPINUDP_NON_IKE	1 /* unused  draft-ietf-ipsec-nat-t-ike-00/01 */
#define UDP_ENCAP_ESPINUDP	2 /* draft-ietf-ipsec-udp-encaps-06 */
#define UDP_ENCAP_L2TPINUDP	3 /* rfc2661 */
#define UDP_ENCAP_GTP0		4 /* GSM TS 09.60 */
#define UDP_ENCAP_GTP1U		5 /* 3GPP TS 29.060 */
#define UDP_ENCAP_RXRPC		6
#define TCP_ENCAP_ESPINTCP	7 /* Yikes, this is really xfrm encap types. */
#define UDP_ENCAP_OVPNINUDP	8 /* OpenVPN traffic */

#endif /* _UAPI_LINUX_UDP_H */

Annotation

Implementation Notes