cregit-Linux how code gets into the kernel

Release 4.7 include/uapi/linux/ip.h

/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              Definitions for the IP protocol.
 *
 * Version:     @(#)ip.h        1.0.2   04/28/93
 *
 * Authors:     Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */
#ifndef _UAPI_LINUX_IP_H

#define _UAPI_LINUX_IP_H
#include <linux/types.h>
#include <asm/byteorder.h>


#define IPTOS_TOS_MASK		0x1E

#define IPTOS_TOS(tos)		((tos)&IPTOS_TOS_MASK)

#define	IPTOS_LOWDELAY		0x10

#define	IPTOS_THROUGHPUT	0x08

#define	IPTOS_RELIABILITY	0x04

#define	IPTOS_MINCOST		0x02


#define IPTOS_PREC_MASK		0xE0

#define IPTOS_PREC(tos)		((tos)&IPTOS_PREC_MASK)

#define IPTOS_PREC_NETCONTROL           0xe0

#define IPTOS_PREC_INTERNETCONTROL      0xc0

#define IPTOS_PREC_CRITIC_ECP           0xa0

#define IPTOS_PREC_FLASHOVERRIDE        0x80

#define IPTOS_PREC_FLASH                0x60

#define IPTOS_PREC_IMMEDIATE            0x40

#define IPTOS_PREC_PRIORITY             0x20

#define IPTOS_PREC_ROUTINE              0x00


/* IP options */

#define IPOPT_COPY		0x80

#define IPOPT_CLASS_MASK	0x60

#define IPOPT_NUMBER_MASK	0x1f


#define	IPOPT_COPIED(o)		((o)&IPOPT_COPY)

#define	IPOPT_CLASS(o)		((o)&IPOPT_CLASS_MASK)

#define	IPOPT_NUMBER(o)		((o)&IPOPT_NUMBER_MASK)


#define	IPOPT_CONTROL		0x00

#define	IPOPT_RESERVED1		0x20

#define	IPOPT_MEASUREMENT	0x40

#define	IPOPT_RESERVED2		0x60


#define IPOPT_END	(0 |IPOPT_CONTROL)

#define IPOPT_NOOP	(1 |IPOPT_CONTROL)

#define IPOPT_SEC	(2 |IPOPT_CONTROL|IPOPT_COPY)

#define IPOPT_LSRR	(3 |IPOPT_CONTROL|IPOPT_COPY)

#define IPOPT_TIMESTAMP	(4 |IPOPT_MEASUREMENT)

#define IPOPT_CIPSO	(6 |IPOPT_CONTROL|IPOPT_COPY)

#define IPOPT_RR	(7 |IPOPT_CONTROL)

#define IPOPT_SID	(8 |IPOPT_CONTROL|IPOPT_COPY)

#define IPOPT_SSRR	(9 |IPOPT_CONTROL|IPOPT_COPY)

#define IPOPT_RA	(20|IPOPT_CONTROL|IPOPT_COPY)


#define IPVERSION	4

#define MAXTTL		255

#define IPDEFTTL	64


#define IPOPT_OPTVAL 0

#define IPOPT_OLEN   1

#define IPOPT_OFFSET 2

#define IPOPT_MINOFF 4

#define MAX_IPOPTLEN 40

#define IPOPT_NOP IPOPT_NOOP

#define IPOPT_EOL IPOPT_END

#define IPOPT_TS  IPOPT_TIMESTAMP


#define	IPOPT_TS_TSONLY		0		
/* timestamps only */

#define	IPOPT_TS_TSANDADDR	1		
/* timestamps and addresses */

#define	IPOPT_TS_PRESPEC	3		
/* specified modules only */


#define IPV4_BEET_PHMAXLEN 8


struct iphdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	
__u8	ihl:4,
		
version:4;
#elif defined (__BIG_ENDIAN_BITFIELD)
	__u8	version:4,
  		ihl:4;
#else
#error	"Please fix <asm/byteorder.h>"
#endif
	
__u8	tos;
	
__be16	tot_len;
	
__be16	id;
	
__be16	frag_off;
	
__u8	ttl;
	
__u8	protocol;
	
__sum16	check;
	
__be32	saddr;
	
__be32	daddr;
	/*The options start here. */
};



struct ip_auth_hdr {
	
__u8  nexthdr;
	
__u8  hdrlen;		/* This one is measured in 32 bit units! */
	
__be16 reserved;
	
__be32 spi;
	
__be32 seq_no;		/* Sequence number */
	
__u8  auth_data[0];	/* Variable len but >=4. Mind the 64 bit alignment! */
};


struct ip_esp_hdr {
	
__be32 spi;
	
__be32 seq_no;		/* Sequence number */
	
__u8  enc_data[0];	/* Variable len but >=8. Mind the 64 bit alignment! */
};


struct ip_comp_hdr {
	
__u8 nexthdr;
	
__u8 flags;
	
__be16 cpi;
};


struct ip_beet_phdr {
	
__u8 nexthdr;
	
__u8 hdrlen;
	
__u8 padlen;
	
__u8 reserved;
};

/* index values for the variables in ipv4_devconf */
enum
{
	
IPV4_DEVCONF_FORWARDING=1,
	
IPV4_DEVCONF_MC_FORWARDING,
	
IPV4_DEVCONF_PROXY_ARP,
	
IPV4_DEVCONF_ACCEPT_REDIRECTS,
	
IPV4_DEVCONF_SECURE_REDIRECTS,
	
IPV4_DEVCONF_SEND_REDIRECTS,
	
IPV4_DEVCONF_SHARED_MEDIA,
	
IPV4_DEVCONF_RP_FILTER,
	
IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
	
IPV4_DEVCONF_BOOTP_RELAY,
	
IPV4_DEVCONF_LOG_MARTIANS,
	
IPV4_DEVCONF_TAG,
	
IPV4_DEVCONF_ARPFILTER,
	
IPV4_DEVCONF_MEDIUM_ID,
	
IPV4_DEVCONF_NOXFRM,
	
IPV4_DEVCONF_NOPOLICY,
	
IPV4_DEVCONF_FORCE_IGMP_VERSION,
	
IPV4_DEVCONF_ARP_ANNOUNCE,
	
IPV4_DEVCONF_ARP_IGNORE,
	
IPV4_DEVCONF_PROMOTE_SECONDARIES,
	
IPV4_DEVCONF_ARP_ACCEPT,
	
IPV4_DEVCONF_ARP_NOTIFY,
	
IPV4_DEVCONF_ACCEPT_LOCAL,
	
IPV4_DEVCONF_SRC_VMARK,
	
IPV4_DEVCONF_PROXY_ARP_PVLAN,
	
IPV4_DEVCONF_ROUTE_LOCALNET,
	
IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
	
IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
	
IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN,
	
IPV4_DEVCONF_DROP_UNICAST_IN_L2_MULTICAST,
	
IPV4_DEVCONF_DROP_GRATUITOUS_ARP,
	
__IPV4_DEVCONF_MAX
};


#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)

#endif /* _UAPI_LINUX_IP_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
david howellsdavid howells38883.98%116.67%
stephen hemmingerstephen hemminger6413.85%116.67%
johannes bergjohannes berg40.87%233.33%
david s. millerdavid s. miller40.87%116.67%
andy gospodarekandy gospodarek20.43%116.67%
Total462100.00%6100.00%
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