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Diffstat (limited to 'include/linux/ip.h')
| -rw-r--r-- | include/linux/ip.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/include/linux/ip.h b/include/linux/ip.h new file mode 100644 index 0000000..f4ecd2f --- /dev/null +++ b/include/linux/ip.h @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * 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 _LINUX_IP_H +#define _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_BC_FORWARDING, + __IPV4_DEVCONF_MAX +}; + +#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1) + +#endif /* _LINUX_IP_H */ |