src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/uptcpip/src/include/netinet/bsd_tcp_syncache.h - public/gem5-resources - Git at Google

 /*-
  * Copyright (c) 1982, 1986, 1993, 1994, 1995
  *	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.
  * 4. 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.
  *
  *	@(#)tcp_var.h	8.4 (Berkeley) 5/24/95
  * $FreeBSD$
  */

 #ifndef _BSD_NETINET_TCP_SYNCACHE_H_
 #define _BSD_NETINET_TCP_SYNCACHE_H_
 #ifdef _FREEBSD_KERNEL

 struct toeopt;

 void	 syncache_init(void);
 #ifdef VIMAGE
 void	syncache_destroy(void);
 #endif
 void	 syncache_unreach(struct in_conninfo *, struct tcphdr *);
 int	 syncache_expand(struct in_conninfo *, struct tcpopt *,
 	     struct tcphdr *, struct socket **, struct mbuf *);
 int	 tcp_offload_syncache_expand(struct in_conninfo *inc, struct toeopt *toeo,
              struct tcphdr *th, struct socket **lsop, struct mbuf *m);
 void	 syncache_add(struct in_conninfo *, struct tcpopt *,
 	     struct tcphdr *, struct inpcb *, struct socket **, struct mbuf *);
 void	 tcp_offload_syncache_add(struct in_conninfo *, struct toeopt *,
              struct tcphdr *, struct inpcb *, struct socket **,
              struct toe_usrreqs *tu, void *toepcb);

 void	 syncache_chkrst(struct in_conninfo *, struct tcphdr *);
 void	 syncache_badack(struct in_conninfo *);
 int	 syncache_pcbcount(void);
 //int	 syncache_pcblist(struct sysctl_req *req, int max_pcbs, int *pcbs_exported);

 struct syncache {
 	TAILQ_ENTRY(syncache)	sc_hash;
 	struct		in_conninfo sc_inc;	/* addresses */
 	int		sc_rxttime;		/* retransmit time */
 	u_int16_t	sc_rxmits;		/* retransmit counter */
 	u_int32_t	sc_tsreflect;		/* timestamp to reflect */
 	u_int32_t	sc_ts;			/* our timestamp to send */
 	u_int32_t	sc_tsoff;		/* ts offset w/ syncookies */
 	u_int32_t	sc_flowlabel;		/* IPv6 flowlabel */
 	tcp_seq		sc_irs;			/* seq from peer */
 	tcp_seq		sc_iss;			/* our ISS */
 	struct		mbuf *sc_ipopts;	/* source route */
 	u_int16_t	sc_peer_mss;		/* peer's MSS */
 	u_int16_t	sc_wnd;			/* advertised window */
 	u_int8_t	sc_ip_ttl;		/* IPv4 TTL */
 	u_int8_t	sc_ip_tos;		/* IPv4 TOS */
 	u_int8_t	sc_requested_s_scale:4,
 			sc_requested_r_scale:4;
 	u_int16_t	sc_flags;
 #ifndef TCP_OFFLOAD_DISABLE
 	struct toe_usrreqs *sc_tu;		/* TOE operations */
 	void 		*sc_toepcb;		/* TOE protocol block */
 #endif
 	struct label	*sc_label;		/* MAC label reference */
 	struct ucred	*sc_cred;		/* cred cache for jail checks */
 };

 /*
  * Flags for the sc_flags field.
  */
 #define SCF_NOOPT	0x01			/* no TCP options */
 #define SCF_WINSCALE	0x02			/* negotiated window scaling */
 #define SCF_TIMESTAMP	0x04			/* negotiated timestamps */
 						/* MSS is implicit */
 #define SCF_UNREACH	0x10			/* icmp unreachable received */
 #define SCF_SIGNATURE	0x20			/* send MD5 digests */
 #define SCF_SACK	0x80			/* send SACK option */
 #define SCF_ECN		0x100			/* send ECN setup packet */

 #define	SYNCOOKIE_SECRET_SIZE	8	/* dwords */
 #define	SYNCOOKIE_LIFETIME	16	/* seconds */

 struct syncache_head {
 	struct vnet	*sch_vnet;
 	struct mtx	sch_mtx;
 	TAILQ_HEAD(sch_head, syncache)	sch_bucket;
 	struct callout	sch_timer;
 	int		sch_nextc;
 	u_int		sch_length;
 	u_int		sch_oddeven;
 	u_int32_t	sch_secbits_odd[SYNCOOKIE_SECRET_SIZE];
 	u_int32_t	sch_secbits_even[SYNCOOKIE_SECRET_SIZE];
 	u_int		sch_reseed;		/* time_uptime, seconds */
 };

 struct tcp_syncache {
 	struct	syncache_head *hashbase;
 	uma_zone_t zone;
 	u_int	hashsize;
 	u_int	hashmask;
 	u_int	bucket_limit;
 	u_int	cache_count;		/* XXX: unprotected */
 	u_int	cache_limit;
 	u_int	rexmt_limit;
 	u_int	hash_secret;
 };

 #endif /* _FREEBSD_KERNEL */
 #endif /* !_BSD_NETINET_TCP_SYNCACHE_H_ */
	/*-
	* Copyright (c) 1982, 1986, 1993, 1994, 1995
	* 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.
	* 4. 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.
	*
	* @(#)tcp_var.h 8.4 (Berkeley) 5/24/95
	* $FreeBSD$
	*/

	#ifndef _BSD_NETINET_TCP_SYNCACHE_H_
	#define _BSD_NETINET_TCP_SYNCACHE_H_
	#ifdef _FREEBSD_KERNEL

	struct toeopt;

	void syncache_init(void);
	#ifdef VIMAGE
	void syncache_destroy(void);
	#endif
	void syncache_unreach(struct in_conninfo , struct tcphdr );
	int syncache_expand(struct in_conninfo , struct tcpopt ,
	struct tcphdr , struct socket , struct mbuf );
	int tcp_offload_syncache_expand(struct in_conninfo inc, struct toeopt toeo,
	struct tcphdr th, struct socket lsop, struct mbuf m);
	void syncache_add(struct in_conninfo , struct tcpopt ,
	struct tcphdr , struct inpcb , struct socket *, struct mbuf );
	void tcp_offload_syncache_add(struct in_conninfo , struct toeopt ,
	struct tcphdr , struct inpcb , struct socket **,
	struct toe_usrreqs tu, void toepcb);

	void syncache_chkrst(struct in_conninfo , struct tcphdr );
	void syncache_badack(struct in_conninfo *);
	int syncache_pcbcount(void);
	//int syncache_pcblist(struct sysctl_req req, int max_pcbs, int pcbs_exported);

	struct syncache {
	TAILQ_ENTRY(syncache) sc_hash;
	struct in_conninfo sc_inc; /* addresses */
	int sc_rxttime; /* retransmit time */
	u_int16_t sc_rxmits; /* retransmit counter */
	u_int32_t sc_tsreflect; /* timestamp to reflect */
	u_int32_t sc_ts; /* our timestamp to send */
	u_int32_t sc_tsoff; /* ts offset w/ syncookies */
	u_int32_t sc_flowlabel; /* IPv6 flowlabel */
	tcp_seq sc_irs; /* seq from peer */
	tcp_seq sc_iss; /* our ISS */
	struct mbuf sc_ipopts; / source route */
	u_int16_t sc_peer_mss; /* peer's MSS */
	u_int16_t sc_wnd; /* advertised window */
	u_int8_t sc_ip_ttl; /* IPv4 TTL */
	u_int8_t sc_ip_tos; /* IPv4 TOS */
	u_int8_t sc_requested_s_scale:4,
	sc_requested_r_scale:4;
	u_int16_t sc_flags;
	#ifndef TCP_OFFLOAD_DISABLE
	struct toe_usrreqs sc_tu; / TOE operations */
	void sc_toepcb; / TOE protocol block */
	#endif
	struct label sc_label; / MAC label reference */
	struct ucred sc_cred; / cred cache for jail checks */
	};

	/*
	* Flags for the sc_flags field.
	*/
	#define SCF_NOOPT 0x01 /* no TCP options */
	#define SCF_WINSCALE 0x02 /* negotiated window scaling */
	#define SCF_TIMESTAMP 0x04 /* negotiated timestamps */
	/* MSS is implicit */
	#define SCF_UNREACH 0x10 /* icmp unreachable received */
	#define SCF_SIGNATURE 0x20 /* send MD5 digests */
	#define SCF_SACK 0x80 /* send SACK option */
	#define SCF_ECN 0x100 /* send ECN setup packet */

	#define SYNCOOKIE_SECRET_SIZE 8 /* dwords */
	#define SYNCOOKIE_LIFETIME 16 /* seconds */

	struct syncache_head {
	struct vnet *sch_vnet;
	struct mtx sch_mtx;
	TAILQ_HEAD(sch_head, syncache) sch_bucket;
	struct callout sch_timer;
	int sch_nextc;
	u_int sch_length;
	u_int sch_oddeven;
	u_int32_t sch_secbits_odd[SYNCOOKIE_SECRET_SIZE];
	u_int32_t sch_secbits_even[SYNCOOKIE_SECRET_SIZE];
	u_int sch_reseed; /* time_uptime, seconds */
	};

	struct tcp_syncache {
	struct syncache_head *hashbase;
	uma_zone_t zone;
	u_int hashsize;
	u_int hashmask;
	u_int bucket_limit;
	u_int cache_count; /* XXX: unprotected */
	u_int cache_limit;
	u_int rexmt_limit;
	u_int hash_secret;
	};

	#endif /* _FREEBSD_KERNEL */
	#endif /* !_BSD_NETINET_TCP_SYNCACHE_H_ */