tools/include/uapi/linux/in.h

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

File Facts

System
Linux kernel
Corpus path
tools/include/uapi/linux/in.h
Extension
.h
Size
11070 bytes
Lines
338
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct in_addr {
	__be32	s_addr;
};
#endif

#define IP_TOS		1
#define IP_TTL		2
#define IP_HDRINCL	3
#define IP_OPTIONS	4
#define IP_ROUTER_ALERT	5
#define IP_RECVOPTS	6
#define IP_RETOPTS	7
#define IP_PKTINFO	8
#define IP_PKTOPTIONS	9
#define IP_MTU_DISCOVER	10
#define IP_RECVERR	11
#define IP_RECVTTL	12
#define	IP_RECVTOS	13
#define IP_MTU		14
#define IP_FREEBIND	15
#define IP_IPSEC_POLICY	16
#define IP_XFRM_POLICY	17
#define IP_PASSSEC	18
#define IP_TRANSPARENT	19

/* BSD compatibility */
#define IP_RECVRETOPTS	IP_RETOPTS

/* TProxy original addresses */
#define IP_ORIGDSTADDR       20
#define IP_RECVORIGDSTADDR   IP_ORIGDSTADDR

#define IP_MINTTL       21
#define IP_NODEFRAG     22
#define IP_CHECKSUM	23
#define IP_BIND_ADDRESS_NO_PORT	24
#define IP_RECVFRAGSIZE	25
#define IP_RECVERR_RFC4884	26

/* IP_MTU_DISCOVER values */
#define IP_PMTUDISC_DONT		0	/* Never send DF frames */
#define IP_PMTUDISC_WANT		1	/* Use per route hints	*/
#define IP_PMTUDISC_DO			2	/* Always DF		*/
#define IP_PMTUDISC_PROBE		3       /* Ignore dst pmtu      */
/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
 * Also incoming ICMP frag_needed notifications will be ignored on
 * this socket to prevent accepting spoofed ones.
 */
#define IP_PMTUDISC_INTERFACE		4
/* weaker version of IP_PMTUDISC_INTERFACE, which allows packets to get
 * fragmented if they exceed the interface mtu
 */
#define IP_PMTUDISC_OMIT		5

#define IP_MULTICAST_IF			32
#define IP_MULTICAST_TTL 		33
#define IP_MULTICAST_LOOP 		34
#define IP_ADD_MEMBERSHIP		35
#define IP_DROP_MEMBERSHIP		36
#define IP_UNBLOCK_SOURCE		37
#define IP_BLOCK_SOURCE			38
#define IP_ADD_SOURCE_MEMBERSHIP	39
#define IP_DROP_SOURCE_MEMBERSHIP	40
#define IP_MSFILTER			41
#define MCAST_JOIN_GROUP		42
#define MCAST_BLOCK_SOURCE		43
#define MCAST_UNBLOCK_SOURCE		44
#define MCAST_LEAVE_GROUP		45
#define MCAST_JOIN_SOURCE_GROUP		46
#define MCAST_LEAVE_SOURCE_GROUP	47
#define MCAST_MSFILTER			48
#define IP_MULTICAST_ALL		49
#define IP_UNICAST_IF			50
#define IP_LOCAL_PORT_RANGE		51
#define IP_PROTOCOL			52

#define MCAST_EXCLUDE	0
#define MCAST_INCLUDE	1

/* These need to appear somewhere around here */
#define IP_DEFAULT_MULTICAST_TTL        1
#define IP_DEFAULT_MULTICAST_LOOP       1

/* Request struct for multicast socket ops */

#if __UAPI_DEF_IP_MREQ
struct ip_mreq  {
	struct in_addr imr_multiaddr;	/* IP multicast address of group */
	struct in_addr imr_interface;	/* local IP address of interface */
};

Annotation

Implementation Notes