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ip.h
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/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
******************************************************************************/
#ifndef _LINUX_IP_H
#define _LINUX_IP_H
/* SOL_IP socket options */
#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_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
/* struct timestamp, struct route and MAX_ROUTES are removed.
REASONS: it is clear that nobody used them because:
- MAX_ROUTES value was wrong.
- "struct route" was wrong.
- "struct timestamp" had fatally misaligned bitfields and was completely unusable.
*/
#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 */
#ifdef PLATFORM_LINUX
struct ip_options {
__u32 faddr; /* Saved first hop address */
unsigned char optlen;
unsigned char srr;
unsigned char rr;
unsigned char ts;
unsigned char is_setbyuser:1, /* Set by setsockopt? */
is_data:1, /* Options in __data, rather than skb */
is_strictroute:1, /* Strict source route */
srr_is_hit:1, /* Packet destination addr was our one */
is_changed:1, /* IP checksum more not valid */
rr_needaddr:1, /* Need to record addr of outgoing dev */
ts_needtime:1, /* Need to record timestamp */
ts_needaddr:1; /* Need to record addr of outgoing dev */
unsigned char router_alert;
unsigned char __pad1;
unsigned char __pad2;
unsigned char __data[0];
};
#define optlength(opt) (sizeof(struct ip_options) + opt->optlen)
#endif
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;
__u16 tot_len;
__u16 id;
__u16 frag_off;
__u8 ttl;
__u8 protocol;
__u16 check;
__u32 saddr;
__u32 daddr;
/*The options start here. */
};
#endif /* _LINUX_IP_H */