usr/src/boot/include/netinet/udp_var.h - illumos-gate - Gitiles

 /*-
  * Copyright (c) 1982, 1986, 1989, 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.
  * 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.
  *
  *	@(#)udp_var.h	8.1 (Berkeley) 6/10/93
  * $FreeBSD$
  */

 #ifndef _NETINET_UDP_VAR_H_
 #define	_NETINET_UDP_VAR_H_

 /*
  * UDP kernel structures and variables.
  */
 struct udpiphdr {
 	struct ipovly	ui_i;		/* overlaid ip structure */
 	struct udphdr	ui_u;		/* udp header */
 };
 #define	ui_x1		ui_i.ih_x1
 #define	ui_v		ui_i.ih_x1[0]
 #define	ui_pr		ui_i.ih_pr
 #define	ui_len		ui_i.ih_len
 #define	ui_src		ui_i.ih_src
 #define	ui_dst		ui_i.ih_dst
 #define	ui_sport	ui_u.uh_sport
 #define	ui_dport	ui_u.uh_dport
 #define	ui_ulen		ui_u.uh_ulen
 #define	ui_sum		ui_u.uh_sum

 struct inpcb;
 struct mbuf;

 typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *,
 			      const struct sockaddr *, void *);

 /*
  * UDP control block; one per udp.
  */
 struct udpcb {
 	udp_tun_func_t	u_tun_func;	/* UDP kernel tunneling callback. */
 	u_int		u_flags;	/* Generic UDP flags. */
 	uint16_t	u_rxcslen;	/* Coverage for incoming datagrams. */
 	uint16_t	u_txcslen;	/* Coverage for outgoing datagrams. */
 	void 		*u_tun_ctx;	/* Tunneling callback context. */
 };

 #define	intoudpcb(ip)	((struct udpcb *)(ip)->inp_ppcb)
 #define	sotoudpcb(so)	(intoudpcb(sotoinpcb(so)))

 				/* IPsec: ESP in UDP tunneling: */
 #define	UF_ESPINUDP_NON_IKE	0x00000001	/* w/ non-IKE marker .. */
 	/* .. per draft-ietf-ipsec-nat-t-ike-0[01],
 	 * and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
 #define	UF_ESPINUDP		0x00000002	/* w/ non-ESP marker. */

 struct udpstat {
 				/* input statistics: */
 	uint64_t udps_ipackets;		/* total input packets */
 	uint64_t udps_hdrops;		/* packet shorter than header */
 	uint64_t udps_badsum;		/* checksum error */
 	uint64_t udps_nosum;		/* no checksum */
 	uint64_t udps_badlen;		/* data length larger than packet */
 	uint64_t udps_noport;		/* no socket on port */
 	uint64_t udps_noportbcast;	/* of above, arrived as broadcast */
 	uint64_t udps_fullsock;		/* not delivered, input socket full */
 	uint64_t udpps_pcbcachemiss;	/* input packets missing pcb cache */
 	uint64_t udpps_pcbhashmiss;	/* input packets not for hashed pcb */
 				/* output statistics: */
 	uint64_t udps_opackets;		/* total output packets */
 	uint64_t udps_fastout;		/* output packets on fast path */
 	/* of no socket on port, arrived as multicast */
 	uint64_t udps_noportmcast;
 	uint64_t udps_filtermcast;	/* blocked by multicast filter */
 };

 #ifdef _KERNEL
 #include <sys/counter.h>

 VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
 /*
  * In-kernel consumers can use these accessor macros directly to update
  * stats.
  */
 #define	UDPSTAT_ADD(name, val)  \
     VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
 #define	UDPSTAT_INC(name)	UDPSTAT_ADD(name, 1)

 /*
  * Kernel module consumers must use this accessor macro.
  */
 void	kmod_udpstat_inc(int statnum);
 #define	KMOD_UDPSTAT_INC(name)	\
     kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
 #endif

 /*
  * Identifiers for UDP sysctl nodes.
  */
 #define	UDPCTL_CHECKSUM		1	/* checksum UDP packets */
 #define	UDPCTL_STATS		2	/* statistics (read-only) */
 #define	UDPCTL_MAXDGRAM		3	/* max datagram size */
 #define	UDPCTL_RECVSPACE	4	/* default receive buffer space */
 #define	UDPCTL_PCBLIST		5	/* list of PCBs for UDP sockets */

 #ifdef _KERNEL
 #include <netinet/in_pcb.h>
 SYSCTL_DECL(_net_inet_udp);

 extern struct pr_usrreqs	udp_usrreqs;
 VNET_DECLARE(struct inpcbhead, udb);
 VNET_DECLARE(struct inpcbinfo, udbinfo);
 VNET_DECLARE(struct inpcbhead, ulitecb);
 VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
 #define	V_udb			VNET(udb)
 #define	V_udbinfo		VNET(udbinfo)
 #define	V_ulitecb		VNET(ulitecb)
 #define	V_ulitecbinfo		VNET(ulitecbinfo)

 extern u_long			udp_sendspace;
 extern u_long			udp_recvspace;
 VNET_DECLARE(int, udp_cksum);
 VNET_DECLARE(int, udp_blackhole);
 #define	V_udp_cksum		VNET(udp_cksum)
 #define	V_udp_blackhole		VNET(udp_blackhole)
 extern int			udp_log_in_vain;

 static __inline struct inpcbinfo *
 udp_get_inpcbinfo(int protocol)
 {
 	return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
 }

 static __inline struct inpcbhead *
 udp_get_pcblist(int protocol)
 {
 	return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
 }

 int		udp_newudpcb(struct inpcb *);
 void		udp_discardcb(struct udpcb *);

 void		udp_ctlinput(int, struct sockaddr *, void *);
 void		udplite_ctlinput(int, struct sockaddr *, void *);
 int		udp_ctloutput(struct socket *, struct sockopt *);
 void		udp_init(void);
 void		udplite_init(void);
 #ifdef VIMAGE
 void		udp_destroy(void);
 void		udplite_destroy(void);
 #endif
 int		udp_input(struct mbuf **, int *, int);
 void		udplite_input(struct mbuf *, int);
 struct inpcb	*udp_notify(struct inpcb *inp, int errno);
 int		udp_shutdown(struct socket *so);

 int		udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f,
 					 void *ctx);

 #endif /* _KERNEL */

 #endif /* _NETINET_UDP_VAR_H_ */
	/*-
	* Copyright (c) 1982, 1986, 1989, 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.
	* 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.
	*
	* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
	* $FreeBSD$
	*/

	#ifndef _NETINET_UDP_VAR_H_
	#define _NETINET_UDP_VAR_H_

	/*
	* UDP kernel structures and variables.
	*/
	struct udpiphdr {
	struct ipovly ui_i; /* overlaid ip structure */
	struct udphdr ui_u; /* udp header */
	};
	#define ui_x1 ui_i.ih_x1
	#define ui_v ui_i.ih_x1[0]
	#define ui_pr ui_i.ih_pr
	#define ui_len ui_i.ih_len
	#define ui_src ui_i.ih_src
	#define ui_dst ui_i.ih_dst
	#define ui_sport ui_u.uh_sport
	#define ui_dport ui_u.uh_dport
	#define ui_ulen ui_u.uh_ulen
	#define ui_sum ui_u.uh_sum

	struct inpcb;
	struct mbuf;

	typedef void(udp_tun_func_t)(struct mbuf , int off, struct inpcb *,
	const struct sockaddr , void );

	/*
	* UDP control block; one per udp.
	*/
	struct udpcb {
	udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
	u_int u_flags; /* Generic UDP flags. */
	uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
	uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
	void u_tun_ctx; / Tunneling callback context. */
	};

	#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
	#define sotoudpcb(so) (intoudpcb(sotoinpcb(so)))

	/* IPsec: ESP in UDP tunneling: */
	#define UF_ESPINUDP_NON_IKE 0x00000001 /* w/ non-IKE marker .. */
	/* .. per draft-ietf-ipsec-nat-t-ike-0[01],
	* and draft-ietf-ipsec-udp-encaps-(00/)01.txt */
	#define UF_ESPINUDP 0x00000002 /* w/ non-ESP marker. */

	struct udpstat {
	/* input statistics: */
	uint64_t udps_ipackets; /* total input packets */
	uint64_t udps_hdrops; /* packet shorter than header */
	uint64_t udps_badsum; /* checksum error */
	uint64_t udps_nosum; /* no checksum */
	uint64_t udps_badlen; /* data length larger than packet */
	uint64_t udps_noport; /* no socket on port */
	uint64_t udps_noportbcast; /* of above, arrived as broadcast */
	uint64_t udps_fullsock; /* not delivered, input socket full */
	uint64_t udpps_pcbcachemiss; /* input packets missing pcb cache */
	uint64_t udpps_pcbhashmiss; /* input packets not for hashed pcb */
	/* output statistics: */
	uint64_t udps_opackets; /* total output packets */
	uint64_t udps_fastout; /* output packets on fast path */
	/* of no socket on port, arrived as multicast */
	uint64_t udps_noportmcast;
	uint64_t udps_filtermcast; /* blocked by multicast filter */
	};

	#ifdef _KERNEL
	#include <sys/counter.h>

	VNET_PCPUSTAT_DECLARE(struct udpstat, udpstat);
	/*
	* In-kernel consumers can use these accessor macros directly to update
	* stats.
	*/
	#define UDPSTAT_ADD(name, val) \
	VNET_PCPUSTAT_ADD(struct udpstat, udpstat, name, (val))
	#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)

	/*
	* Kernel module consumers must use this accessor macro.
	*/
	void kmod_udpstat_inc(int statnum);
	#define KMOD_UDPSTAT_INC(name) \
	kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(uint64_t))
	#endif

	/*
	* Identifiers for UDP sysctl nodes.
	*/
	#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
	#define UDPCTL_STATS 2 /* statistics (read-only) */
	#define UDPCTL_MAXDGRAM 3 /* max datagram size */
	#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
	#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */

	#ifdef _KERNEL
	#include <netinet/in_pcb.h>
	SYSCTL_DECL(_net_inet_udp);

	extern struct pr_usrreqs udp_usrreqs;
	VNET_DECLARE(struct inpcbhead, udb);
	VNET_DECLARE(struct inpcbinfo, udbinfo);
	VNET_DECLARE(struct inpcbhead, ulitecb);
	VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
	#define V_udb VNET(udb)
	#define V_udbinfo VNET(udbinfo)
	#define V_ulitecb VNET(ulitecb)
	#define V_ulitecbinfo VNET(ulitecbinfo)

	extern u_long udp_sendspace;
	extern u_long udp_recvspace;
	VNET_DECLARE(int, udp_cksum);
	VNET_DECLARE(int, udp_blackhole);
	#define V_udp_cksum VNET(udp_cksum)
	#define V_udp_blackhole VNET(udp_blackhole)
	extern int udp_log_in_vain;

	static __inline struct inpcbinfo *
	udp_get_inpcbinfo(int protocol)
	{
	return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
	}

	static __inline struct inpcbhead *
	udp_get_pcblist(int protocol)
	{
	return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
	}

	int udp_newudpcb(struct inpcb *);
	void udp_discardcb(struct udpcb *);

	void udp_ctlinput(int, struct sockaddr , void );
	void udplite_ctlinput(int, struct sockaddr , void );
	int udp_ctloutput(struct socket , struct sockopt );
	void udp_init(void);
	void udplite_init(void);
	#ifdef VIMAGE
	void udp_destroy(void);
	void udplite_destroy(void);
	#endif
	int udp_input(struct mbuf *, int , int);
	void udplite_input(struct mbuf *, int);
	struct inpcb udp_notify(struct inpcb inp, int errno);
	int udp_shutdown(struct socket *so);

	int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f,
	void *ctx);

	#endif /* _KERNEL */

	#endif /* _NETINET_UDP_VAR_H_ */