ba4e58eca8
This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:
* UDP and UDP-Lite now use separate object files
* source file dependencies resolved via header files
net/ipv{4,6}/udp_impl.h
* order of inclusion files in udp.c/udplite.c adapted
accordingly
[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)
This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
* generic routines are all located in net/ipv4/udp.c
* UDP-Lite specific routines are in net/ipv4/udplite.c
* MIB/statistics support in /proc/net/snmp and /proc/net/udplite
* shared API with extensions for partial checksum coverage
[NET/IPv6]: Extension for UDP-Lite over IPv6
It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
* UDPv6 generic and shared code is in net/ipv6/udp.c
* UDP-Litev6 specific extensions are in net/ipv6/udplite.c
* MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
* support for IPV6_ADDRFORM
* aligned the coding style of protocol initialisation with af_inet6.c
* made the error handling in udpv6_queue_rcv_skb consistent;
to return `-1' on error on all error cases
* consolidation of shared code
[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support
The UDP-Lite patch further provides
* API documentation for UDP-Lite
* basic xfrm support
* basic netfilter support for IPv4 and IPv6 (LOG target)
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
258 lines
7.9 KiB
C
258 lines
7.9 KiB
C
/*
|
|
* 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
|
|
|
|
/* BSD compatibility */
|
|
#define IP_RECVRETOPTS IP_RETOPTS
|
|
|
|
/* 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_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 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__
|
|
/* Some random defines to make it easier in the kernel.. */
|
|
#define LOOPBACK(x) (((x) & htonl(0xff000000)) == htonl(0x7f000000))
|
|
#define MULTICAST(x) (((x) & htonl(0xf0000000)) == htonl(0xe0000000))
|
|
#define BADCLASS(x) (((x) & htonl(0xf0000000)) == htonl(0xf0000000))
|
|
#define ZERONET(x) (((x) & htonl(0xff000000)) == htonl(0x00000000))
|
|
#define LOCAL_MCAST(x) (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
|
|
|
|
#endif
|
|
|
|
#endif /* _LINUX_IN_H */
|