|  | /* | 
|  | * 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 of the Internet Protocol. | 
|  | * | 
|  | * Version:	@(#)in.h	1.0.1	04/21/93 | 
|  | * | 
|  | * Authors:	Original taken from the GNU Project <netinet/in.h> file. | 
|  | *		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 _LINUX_IN_H | 
|  | #define _LINUX_IN_H | 
|  |  | 
|  | #include <linux/types.h> | 
|  | #include <linux/socket.h> | 
|  |  | 
|  | /* Standard well-defined IP protocols.  */ | 
|  | enum { | 
|  | IPPROTO_IP = 0,		/* Dummy protocol for TCP		*/ | 
|  | IPPROTO_ICMP = 1,		/* Internet Control Message Protocol	*/ | 
|  | IPPROTO_IGMP = 2,		/* Internet Group Management Protocol	*/ | 
|  | IPPROTO_IPIP = 4,		/* IPIP tunnels (older KA9Q tunnels use 94) */ | 
|  | IPPROTO_TCP = 6,		/* Transmission Control Protocol	*/ | 
|  | IPPROTO_EGP = 8,		/* Exterior Gateway Protocol		*/ | 
|  | IPPROTO_PUP = 12,		/* PUP protocol				*/ | 
|  | IPPROTO_UDP = 17,		/* User Datagram Protocol		*/ | 
|  | IPPROTO_IDP = 22,		/* XNS IDP protocol			*/ | 
|  | IPPROTO_DCCP = 33,		/* Datagram Congestion Control Protocol */ | 
|  | IPPROTO_RSVP = 46,		/* RSVP protocol			*/ | 
|  | IPPROTO_GRE = 47,		/* Cisco GRE tunnels (rfc 1701,1702)	*/ | 
|  |  | 
|  | IPPROTO_IPV6	 = 41,		/* IPv6-in-IPv4 tunnelling		*/ | 
|  |  | 
|  | IPPROTO_ESP = 50,            /* Encapsulation Security Payload protocol */ | 
|  | IPPROTO_AH = 51,             /* Authentication Header protocol       */ | 
|  | IPPROTO_BEETPH = 94,	       /* IP option pseudo header for BEET */ | 
|  | IPPROTO_PIM    = 103,		/* Protocol Independent Multicast	*/ | 
|  |  | 
|  | IPPROTO_COMP   = 108,                /* Compression Header protocol */ | 
|  | IPPROTO_SCTP   = 132,		/* Stream Control Transport Protocol	*/ | 
|  | IPPROTO_UDPLITE = 136,	/* UDP-Lite (RFC 3828)			*/ | 
|  |  | 
|  | IPPROTO_RAW	 = 255,		/* Raw IP packets			*/ | 
|  | IPPROTO_MAX | 
|  | }; | 
|  |  | 
|  |  | 
|  | /* Internet address. */ | 
|  | struct in_addr { | 
|  | __be32	s_addr; | 
|  | }; | 
|  |  | 
|  | #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 | 
|  |  | 
|  | /* 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      */ | 
|  |  | 
|  | #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 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 */ | 
|  |  | 
|  | struct ip_mreq  { | 
|  | struct in_addr imr_multiaddr;	/* IP multicast address of group */ | 
|  | struct in_addr imr_interface;	/* local IP address of interface */ | 
|  | }; | 
|  |  | 
|  | struct ip_mreqn { | 
|  | struct in_addr	imr_multiaddr;		/* IP multicast address of group */ | 
|  | struct in_addr	imr_address;		/* local IP address of interface */ | 
|  | int		imr_ifindex;		/* Interface index */ | 
|  | }; | 
|  |  | 
|  | struct ip_mreq_source { | 
|  | __be32		imr_multiaddr; | 
|  | __be32		imr_interface; | 
|  | __be32		imr_sourceaddr; | 
|  | }; | 
|  |  | 
|  | struct ip_msfilter { | 
|  | __be32		imsf_multiaddr; | 
|  | __be32		imsf_interface; | 
|  | __u32		imsf_fmode; | 
|  | __u32		imsf_numsrc; | 
|  | __be32		imsf_slist[1]; | 
|  | }; | 
|  |  | 
|  | #define IP_MSFILTER_SIZE(numsrc) \ | 
|  | (sizeof(struct ip_msfilter) - sizeof(__u32) \ | 
|  | + (numsrc) * sizeof(__u32)) | 
|  |  | 
|  | struct group_req { | 
|  | __u32				 gr_interface;	/* interface index */ | 
|  | struct __kernel_sockaddr_storage gr_group;	/* group address */ | 
|  | }; | 
|  |  | 
|  | struct group_source_req { | 
|  | __u32				 gsr_interface;	/* interface index */ | 
|  | struct __kernel_sockaddr_storage gsr_group;	/* group address */ | 
|  | struct __kernel_sockaddr_storage gsr_source;	/* source address */ | 
|  | }; | 
|  |  | 
|  | struct group_filter { | 
|  | __u32				 gf_interface;	/* interface index */ | 
|  | struct __kernel_sockaddr_storage gf_group;	/* multicast address */ | 
|  | __u32				 gf_fmode;	/* filter mode */ | 
|  | __u32				 gf_numsrc;	/* number of sources */ | 
|  | struct __kernel_sockaddr_storage gf_slist[1];	/* interface index */ | 
|  | }; | 
|  |  | 
|  | #define GROUP_FILTER_SIZE(numsrc) \ | 
|  | (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \ | 
|  | + (numsrc) * sizeof(struct __kernel_sockaddr_storage)) | 
|  |  | 
|  | struct in_pktinfo { | 
|  | int		ipi_ifindex; | 
|  | struct in_addr	ipi_spec_dst; | 
|  | struct in_addr	ipi_addr; | 
|  | }; | 
|  |  | 
|  | /* Structure describing an Internet (IP) socket address. */ | 
|  | #define __SOCK_SIZE__	16		/* sizeof(struct sockaddr)	*/ | 
|  | struct sockaddr_in { | 
|  | sa_family_t		sin_family;	/* Address family		*/ | 
|  | __be16		sin_port;	/* Port number			*/ | 
|  | struct in_addr	sin_addr;	/* Internet address		*/ | 
|  |  | 
|  | /* Pad to size of `struct sockaddr'. */ | 
|  | unsigned char		__pad[__SOCK_SIZE__ - sizeof(short int) - | 
|  | sizeof(unsigned short int) - sizeof(struct in_addr)]; | 
|  | }; | 
|  | #define sin_zero	__pad		/* for BSD UNIX comp. -FvK	*/ | 
|  |  | 
|  |  | 
|  | /* | 
|  | * Definitions of the bits in an Internet address integer. | 
|  | * On subnets, host and network parts are found according | 
|  | * to the subnet mask, not these masks. | 
|  | */ | 
|  | #define	IN_CLASSA(a)		((((long int) (a)) & 0x80000000) == 0) | 
|  | #define	IN_CLASSA_NET		0xff000000 | 
|  | #define	IN_CLASSA_NSHIFT	24 | 
|  | #define	IN_CLASSA_HOST		(0xffffffff & ~IN_CLASSA_NET) | 
|  | #define	IN_CLASSA_MAX		128 | 
|  |  | 
|  | #define	IN_CLASSB(a)		((((long int) (a)) & 0xc0000000) == 0x80000000) | 
|  | #define	IN_CLASSB_NET		0xffff0000 | 
|  | #define	IN_CLASSB_NSHIFT	16 | 
|  | #define	IN_CLASSB_HOST		(0xffffffff & ~IN_CLASSB_NET) | 
|  | #define	IN_CLASSB_MAX		65536 | 
|  |  | 
|  | #define	IN_CLASSC(a)		((((long int) (a)) & 0xe0000000) == 0xc0000000) | 
|  | #define	IN_CLASSC_NET		0xffffff00 | 
|  | #define	IN_CLASSC_NSHIFT	8 | 
|  | #define	IN_CLASSC_HOST		(0xffffffff & ~IN_CLASSC_NET) | 
|  |  | 
|  | #define	IN_CLASSD(a)		((((long int) (a)) & 0xf0000000) == 0xe0000000) | 
|  | #define	IN_MULTICAST(a)		IN_CLASSD(a) | 
|  | #define IN_MULTICAST_NET	0xF0000000 | 
|  |  | 
|  | #define	IN_EXPERIMENTAL(a)	((((long int) (a)) & 0xf0000000) == 0xf0000000) | 
|  | #define	IN_BADCLASS(a)		IN_EXPERIMENTAL((a)) | 
|  |  | 
|  | /* Address to accept any incoming messages. */ | 
|  | #define	INADDR_ANY		((unsigned long int) 0x00000000) | 
|  |  | 
|  | /* Address to send to all hosts. */ | 
|  | #define	INADDR_BROADCAST	((unsigned long int) 0xffffffff) | 
|  |  | 
|  | /* Address indicating an error return. */ | 
|  | #define	INADDR_NONE		((unsigned long int) 0xffffffff) | 
|  |  | 
|  | /* Network number for local host loopback. */ | 
|  | #define	IN_LOOPBACKNET		127 | 
|  |  | 
|  | /* Address to loopback in software to local host.  */ | 
|  | #define	INADDR_LOOPBACK		0x7f000001	/* 127.0.0.1   */ | 
|  | #define	IN_LOOPBACK(a)		((((long int) (a)) & 0xff000000) == 0x7f000000) | 
|  |  | 
|  | /* Defines for Multicast INADDR */ | 
|  | #define INADDR_UNSPEC_GROUP   	0xe0000000U	/* 224.0.0.0   */ | 
|  | #define INADDR_ALLHOSTS_GROUP 	0xe0000001U	/* 224.0.0.1   */ | 
|  | #define INADDR_ALLRTRS_GROUP    0xe0000002U	/* 224.0.0.2 */ | 
|  | #define INADDR_MAX_LOCAL_GROUP  0xe00000ffU	/* 224.0.0.255 */ | 
|  |  | 
|  |  | 
|  | /* <asm/byteorder.h> contains the htonl type stuff.. */ | 
|  | #include <asm/byteorder.h> | 
|  |  | 
|  | #ifdef __KERNEL__ | 
|  |  | 
|  | #include <linux/errno.h> | 
|  |  | 
|  | static inline int proto_ports_offset(int proto) | 
|  | { | 
|  | switch (proto) { | 
|  | case IPPROTO_TCP: | 
|  | case IPPROTO_UDP: | 
|  | case IPPROTO_DCCP: | 
|  | case IPPROTO_ESP:	/* SPI */ | 
|  | case IPPROTO_SCTP: | 
|  | case IPPROTO_UDPLITE: | 
|  | return 0; | 
|  | case IPPROTO_AH:	/* SPI */ | 
|  | return 4; | 
|  | default: | 
|  | return -EINVAL; | 
|  | } | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_loopback(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xff000000)) == htonl(0x7f000000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_multicast(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xf0000000)) == htonl(0xe0000000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_local_multicast(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xffffff00)) == htonl(0xe0000000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_lbcast(__be32 addr) | 
|  | { | 
|  | /* limited broadcast */ | 
|  | return addr == htonl(INADDR_BROADCAST); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_zeronet(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xff000000)) == htonl(0x00000000); | 
|  | } | 
|  |  | 
|  | /* Special-Use IPv4 Addresses (RFC3330) */ | 
|  |  | 
|  | static inline bool ipv4_is_private_10(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xff000000)) == htonl(0x0a000000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_private_172(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xfff00000)) == htonl(0xac100000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_private_192(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xffff0000)) == htonl(0xc0a80000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_linklocal_169(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_anycast_6to4(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xffffff00)) == htonl(0xc0586300); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_test_192(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xffffff00)) == htonl(0xc0000200); | 
|  | } | 
|  |  | 
|  | static inline bool ipv4_is_test_198(__be32 addr) | 
|  | { | 
|  | return (addr & htonl(0xfffe0000)) == htonl(0xc6120000); | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #endif	/* _LINUX_IN_H */ |