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📄 dccp.h(2.48 KB)
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📄 if_ether.h(4.62 KB)
📄 igmp.h(5.36 KB)
📄 igmp_var.h(8.69 KB)
📄 in.h(25.81 KB)
📄 in_fib.h(2.59 KB)
📄 in_kdtrace.h(3.31 KB)
📄 in_pcb.h(34.46 KB)
📄 in_rss.h(2.42 KB)
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📄 in_var.h(15.4 KB)
📄 ip.h(7.37 KB)
📄 ip6.h(8.93 KB)
📄 ip_auth.h(2.4 KB)
📄 ip_carp.h(6.79 KB)
📄 ip_compat.h(30.71 KB)
📄 ip_divert.h(2.32 KB)
📄 ip_dstlist.h(1.43 KB)
📄 ip_dummynet.h(8.94 KB)
📄 ip_ecn.h(2.1 KB)
📄 ip_encap.h(3.13 KB)
📄 ip_fil.h(54.87 KB)
📄 ip_frag.h(3.5 KB)
📄 ip_fw.h(34.29 KB)
📄 ip_htable.h(2.04 KB)
📄 ip_icmp.h(8.52 KB)
📄 ip_lookup.h(4.61 KB)
📄 ip_mroute.h(13.66 KB)
📄 ip_nat.h(23.04 KB)
📄 ip_options.h(2.61 KB)
📄 ip_pool.h(1.34 KB)
📄 ip_proxy.h(11.53 KB)
📄 ip_rules.h(470 B)
📄 ip_scan.h(2.56 KB)
📄 ip_state.h(9.55 KB)
📄 ip_sync.h(3.46 KB)
📄 ip_var.h(11.48 KB)
📄 ipf_rb.h(10.37 KB)
📄 ipl.h(360 B)
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📄 pim.h(4.25 KB)
📄 pim_var.h(3.14 KB)
📄 radix_ipf.h(2.63 KB)
📄 sctp.h(22.97 KB)
📄 sctp_asconf.h(3.31 KB)
📄 sctp_auth.h(8.52 KB)
📄 sctp_bsd_addr.h(2.45 KB)
📄 sctp_constants.h(34.12 KB)
📄 sctp_crc32.h(2.07 KB)
📄 sctp_header.h(17.48 KB)
📄 sctp_indata.h(4.18 KB)
📄 sctp_input.h(2.43 KB)
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📄 sctp_lock_bsd.h(15.64 KB)
📄 sctp_os.h(2.73 KB)
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📄 sctp_output.h(6.38 KB)
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📄 sctp_peeloff.h(2.05 KB)
📄 sctp_structs.h(38.29 KB)
📄 sctp_sysctl.h(22.9 KB)
📄 sctp_timer.h(3.07 KB)
📄 sctp_uio.h(38.07 KB)
📄 sctp_var.h(12.21 KB)
📄 sctputil.h(11.69 KB)
📄 tcp.h(18.3 KB)
📄 tcp_debug.h(2.65 KB)
📄 tcp_fastopen.h(3.7 KB)
📄 tcp_fsm.h(4.25 KB)
📄 tcp_hostcache.h(2.92 KB)
📄 tcp_hpts.h(9.89 KB)
📄 tcp_log_buf.h(14.88 KB)
📄 tcp_lro.h(4.43 KB)
📄 tcp_offload.h(2.09 KB)
📄 tcp_pcap.h(1.76 KB)
📄 tcp_ratelimit.h(5.07 KB)
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📄 tcp_syncache.h(5.16 KB)
📄 tcp_timer.h(9.29 KB)
📄 tcp_var.h(43.48 KB)
📄 tcpip.h(2.29 KB)
📄 toecore.h(5.13 KB)
📄 udp.h(2.49 KB)
📄 udp_var.h(6.48 KB)
📄 udplite.h(1.91 KB)

Editing: ip.h

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1982, 1986, 1993
 *	The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)ip.h	8.2 (Berkeley) 6/1/94
 * $FreeBSD$
 */

#ifndef _NETINET_IP_H_
#define	_NETINET_IP_H_

#include <sys/cdefs.h>

/*
 * Definitions for internet protocol version 4.
 *
 * Per RFC 791, September 1981.
 */
#define	IPVERSION	4

/*
 * Structure of an internet header, naked of options.
 */
struct ip {
#if BYTE_ORDER == LITTLE_ENDIAN
	u_char	ip_hl:4,		/* header length */
		ip_v:4;			/* version */
#endif
#if BYTE_ORDER == BIG_ENDIAN
	u_char	ip_v:4,			/* version */
		ip_hl:4;		/* header length */
#endif
	u_char	ip_tos;			/* type of service */
	u_short	ip_len;			/* total length */
	u_short	ip_id;			/* identification */
	u_short	ip_off;			/* fragment offset field */
#define	IP_RF 0x8000			/* reserved fragment flag */
#define	IP_DF 0x4000			/* dont fragment flag */
#define	IP_MF 0x2000			/* more fragments flag */
#define	IP_OFFMASK 0x1fff		/* mask for fragmenting bits */
	u_char	ip_ttl;			/* time to live */
	u_char	ip_p;			/* protocol */
	u_short	ip_sum;			/* checksum */
	struct	in_addr ip_src,ip_dst;	/* source and dest address */
} __packed __aligned(2);

#define	IP_MAXPACKET	65535		/* maximum packet size */

/*
 * Definitions for IP type of service (ip_tos).
 */
#define	IPTOS_LOWDELAY		0x10
#define	IPTOS_THROUGHPUT	0x08
#define	IPTOS_RELIABILITY	0x04
#define	IPTOS_MINCOST		0x02

/*
 * Definitions for IP precedence (also in ip_tos) (deprecated).
 */
#define	IPTOS_PREC_NETCONTROL		IPTOS_DSCP_CS7
#define	IPTOS_PREC_INTERNETCONTROL	IPTOS_DSCP_CS6
#define	IPTOS_PREC_CRITIC_ECP		IPTOS_DSCP_CS5
#define	IPTOS_PREC_FLASHOVERRIDE	IPTOS_DSCP_CS4
#define	IPTOS_PREC_FLASH		IPTOS_DSCP_CS3
#define	IPTOS_PREC_IMMEDIATE		IPTOS_DSCP_CS2
#define	IPTOS_PREC_PRIORITY		IPTOS_DSCP_CS1
#define	IPTOS_PREC_ROUTINE		IPTOS_DSCP_CS0

/*
 * Offset of Diffserv decimal value to convert it to tos value .
 */
#define	IPTOS_DSCP_OFFSET		2

/*
 * Definitions for DiffServ Codepoints as per RFC2474 and RFC5865.
 */
#define	IPTOS_DSCP_CS0		0x00
#define	IPTOS_DSCP_CS1		0x20
#define	IPTOS_DSCP_AF11		0x28
#define	IPTOS_DSCP_AF12		0x30
#define	IPTOS_DSCP_AF13		0x38
#define	IPTOS_DSCP_CS2		0x40
#define	IPTOS_DSCP_AF21		0x48
#define	IPTOS_DSCP_AF22		0x50
#define	IPTOS_DSCP_AF23		0x58
#define	IPTOS_DSCP_CS3		0x60
#define	IPTOS_DSCP_AF31		0x68
#define	IPTOS_DSCP_AF32		0x70
#define	IPTOS_DSCP_AF33		0x78
#define	IPTOS_DSCP_CS4		0x80
#define	IPTOS_DSCP_AF41		0x88
#define	IPTOS_DSCP_AF42		0x90
#define	IPTOS_DSCP_AF43		0x98
#define	IPTOS_DSCP_CS5		0xa0
#define	IPTOS_DSCP_VA		0xb0
#define	IPTOS_DSCP_EF		0xb8
#define	IPTOS_DSCP_CS6		0xc0
#define	IPTOS_DSCP_CS7		0xe0

/*
 * ECN (Explicit Congestion Notification) codepoints in RFC3168 mapped to the
 * lower 2 bits of the TOS field.
 */
#define	IPTOS_ECN_NOTECT	0x00	/* not-ECT */
#define	IPTOS_ECN_ECT1		0x01	/* ECN-capable transport (1) */
#define	IPTOS_ECN_ECT0		0x02	/* ECN-capable transport (0) */
#define	IPTOS_ECN_CE		0x03	/* congestion experienced */
#define	IPTOS_ECN_MASK		0x03	/* ECN field mask */

/*
 * Definitions for options.
 */
#define	IPOPT_COPIED(o)		((o)&0x80)
#define	IPOPT_CLASS(o)		((o)&0x60)
#define	IPOPT_NUMBER(o)		((o)&0x1f)

#define	IPOPT_CONTROL		0x00
#define	IPOPT_RESERVED1		0x20
#define	IPOPT_DEBMEAS		0x40
#define	IPOPT_RESERVED2		0x60

#define	IPOPT_EOL		0		/* end of option list */
#define	IPOPT_NOP		1		/* no operation */

#define	IPOPT_RR		7		/* record packet route */
#define	IPOPT_TS		68		/* timestamp */
#define	IPOPT_SECURITY		130		/* provide s,c,h,tcc */
#define	IPOPT_LSRR		131		/* loose source route */
#define	IPOPT_ESO		133		/* extended security */
#define	IPOPT_CIPSO		134		/* commercial security */
#define	IPOPT_SATID		136		/* satnet id */
#define	IPOPT_SSRR		137		/* strict source route */
#define	IPOPT_RA		148		/* router alert */

/*
 * Offsets to fields in options other than EOL and NOP.
 */
#define	IPOPT_OPTVAL		0		/* option ID */
#define	IPOPT_OLEN		1		/* option length */
#define	IPOPT_OFFSET		2		/* offset within option */
#define	IPOPT_MINOFF		4		/* min value of above */

/*
 * Time stamp option structure.
 */
struct	ip_timestamp {
	u_char	ipt_code;		/* IPOPT_TS */
	u_char	ipt_len;		/* size of structure (variable) */
	u_char	ipt_ptr;		/* index of current entry */
#if BYTE_ORDER == LITTLE_ENDIAN
	u_char	ipt_flg:4,		/* flags, see below */
		ipt_oflw:4;		/* overflow counter */
#endif
#if BYTE_ORDER == BIG_ENDIAN
	u_char	ipt_oflw:4,		/* overflow counter */
		ipt_flg:4;		/* flags, see below */
#endif
	union ipt_timestamp {
		uint32_t	ipt_time[1];	/* network format */
		struct	ipt_ta {
			struct in_addr ipt_addr;
			uint32_t ipt_time;	/* network format */
		} ipt_ta[1];
	} ipt_timestamp;
};

/* Flag bits for ipt_flg. */
#define	IPOPT_TS_TSONLY		0		/* timestamps only */
#define	IPOPT_TS_TSANDADDR	1		/* timestamps and addresses */
#define	IPOPT_TS_PRESPEC	3		/* specified modules only */

/* Bits for security (not byte swapped). */
#define	IPOPT_SECUR_UNCLASS	0x0000
#define	IPOPT_SECUR_CONFID	0xf135
#define	IPOPT_SECUR_EFTO	0x789a
#define	IPOPT_SECUR_MMMM	0xbc4d
#define	IPOPT_SECUR_RESTR	0xaf13
#define	IPOPT_SECUR_SECRET	0xd788
#define	IPOPT_SECUR_TOPSECRET	0x6bc5

/*
 * Internet implementation parameters.
 */
#define	MAXTTL		255		/* maximum time to live (seconds) */
#define	IPDEFTTL	64		/* default ttl, from RFC 1340 */
#define	IPFRAGTTL	60		/* time to live for frags, slowhz */
#define	IPTTLDEC	1		/* subtracted when forwarding */
#define	IP_MSS		576		/* default maximum segment size */

/*
 * This is the real IPv4 pseudo header, used for computing the TCP and UDP
 * checksums. For the Internet checksum, struct ipovly can be used instead.
 * For stronger checksums, the real thing must be used.
 */
struct ippseudo {
	struct	in_addr	ippseudo_src;	/* source internet address */
	struct	in_addr	ippseudo_dst;	/* destination internet address */
	u_char		ippseudo_pad;	/* pad, must be zero */
	u_char		ippseudo_p;	/* protocol */
	u_short		ippseudo_len;	/* protocol length */
};
#endif

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Editing: ip.h

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