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/*-
* 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.
*/
#ifndef _SYS_PROTOSW_H_
#define _SYS_PROTOSW_H_
#if defined(_KERNEL) || defined(_WANT_PROTOSW)
/*
* Protocol switch table.
*
* Each protocol has a handle initializing one of these structures,
* which is used for protocol-protocol and system-protocol communication.
*
* In retrospect, it would be a lot nicer to use an interface
* similar to the vnode VOP interface.
*/
struct socket;
struct sockopt;
struct thread;
struct sockaddr;
struct ifnet;
struct mbuf;
struct stat;
struct ucred;
struct uio;
struct kaiocb;
struct knote;
enum shutdown_how;
/* USE THESE FOR YOUR PROTOTYPES ! */
typedef int pr_ctloutput_t(struct socket *, struct sockopt *);
typedef int pr_setsbopt_t(struct socket *, struct sockopt *);
typedef void pr_abort_t(struct socket *);
typedef int pr_accept_t(struct socket *, struct sockaddr *);
typedef int pr_attach_t(struct socket *, int, struct thread *);
typedef int pr_bind_t(struct socket *, struct sockaddr *, struct thread *);
typedef int pr_connect_t(struct socket *, struct sockaddr *,
struct thread *);
typedef int pr_connect2_t(struct socket *, struct socket *);
typedef int pr_control_t(struct socket *, unsigned long, void *,
struct ifnet *, struct thread *);
typedef void pr_detach_t(struct socket *);
typedef int pr_disconnect_t(struct socket *);
typedef int pr_listen_t(struct socket *, int, struct thread *);
typedef int pr_peeraddr_t(struct socket *, struct sockaddr *);
typedef int pr_rcvd_t(struct socket *, int);
typedef int pr_rcvoob_t(struct socket *, struct mbuf *, int);
typedef enum {
PRUS_OOB = 0x1,
PRUS_EOF = 0x2,
PRUS_MORETOCOME = 0x4,
PRUS_NOTREADY = 0x8,
PRUS_IPV6 = 0x10,
} pr_send_flags_t;
typedef int pr_send_t(struct socket *, int, struct mbuf *,
struct sockaddr *, struct mbuf *, struct thread *);
typedef int pr_sendfile_wait_t(struct socket *, off_t, int *);
typedef int pr_ready_t(struct socket *, struct mbuf *, int);
typedef int pr_sense_t(struct socket *, struct stat *);
typedef int pr_shutdown_t(struct socket *, enum shutdown_how);
typedef int pr_sockaddr_t(struct socket *, struct sockaddr *);
typedef int pr_sosend_t(struct socket *, struct sockaddr *, struct uio *,
struct mbuf *, struct mbuf *, int, struct thread *);
typedef int pr_soreceive_t(struct socket *, struct sockaddr **,
struct uio *, struct mbuf **, struct mbuf **, int *);
typedef int pr_sopoll_t(struct socket *, int, struct thread *);
typedef int pr_kqfilter_t(struct socket *, struct knote *);
typedef void pr_sosetlabel_t(struct socket *);
typedef void pr_close_t(struct socket *);
typedef int pr_bindat_t(int, struct socket *, struct sockaddr *,
struct thread *);
typedef int pr_connectat_t(int, struct socket *, struct sockaddr *,
struct thread *);
typedef int pr_aio_queue_t(struct socket *, struct kaiocb *);
typedef int pr_chmod_t(struct socket *, __mode_t, struct ucred *,
struct thread *);
struct protosw {
short pr_type; /* socket type used for */
short pr_protocol; /* protocol number */
short pr_flags; /* see below */
short pr_unused;
struct domain *pr_domain; /* domain protocol a member of */
pr_soreceive_t *pr_soreceive; /* recv(2) */
pr_sosend_t *pr_sosend; /* send(2) */
pr_send_t *pr_send; /* send(2) via sosend_generic() */
pr_sendfile_wait_t *pr_sendfile_wait; /* sendfile helper */
pr_ready_t *pr_ready; /* sendfile/ktls readyness */
pr_sopoll_t *pr_sopoll; /* poll(2) */
/* Cache line #2 */
pr_attach_t *pr_attach; /* creation: socreate(), sonewconn() */
pr_detach_t *pr_detach; /* destruction: sofree() */
pr_connect_t *pr_connect; /* connect(2) */
pr_disconnect_t *pr_disconnect; /* sodisconnect() */
pr_close_t *pr_close; /* close(2) */
pr_shutdown_t *pr_shutdown; /* shutdown(2) */
pr_rcvd_t *pr_rcvd; /* soreceive_generic() if PR_WANTRCVD */
pr_aio_queue_t *pr_aio_queue; /* aio(9) */
/* Cache line #3 */
pr_bind_t *pr_bind; /* bind(2) */
pr_bindat_t *pr_bindat; /* bindat(2) */
pr_listen_t *pr_listen; /* listen(2) */
pr_accept_t *pr_accept; /* accept(2) */
pr_connectat_t *pr_connectat; /* connectat(2) */
pr_connect2_t *pr_connect2; /* socketpair(2) */
pr_control_t *pr_control; /* ioctl(2) */
pr_rcvoob_t *pr_rcvoob; /* soreceive_rcvoob() */
/* Cache line #4 */
pr_abort_t *pr_abort; /* abrupt tear down: soabort() */
pr_ctloutput_t *pr_ctloutput; /* control output (from above) */
pr_peeraddr_t *pr_peeraddr; /* getpeername(2) */
pr_sockaddr_t *pr_sockaddr; /* getsockname(2) */
pr_sense_t *pr_sense; /* stat(2) */
pr_sosetlabel_t *pr_sosetlabel; /* MAC, XXXGL: remove */
pr_setsbopt_t *pr_setsbopt; /* Socket buffer ioctls */
pr_chmod_t *pr_chmod; /* fchmod(2) */
pr_kqfilter_t *pr_kqfilter; /* kevent(2) */
};
#endif /* defined(_KERNEL) || defined(_WANT_PROTOSW) */
#ifdef _KERNEL
/*
* Values for pr_flags.
* PR_ADDR requires PR_ATOMIC;
* PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
* PR_IMPLOPCL means that the protocol allows sendto without prior connect,
* and the protocol understands the MSG_EOF flag. The first property is
* is only relevant if PR_CONNREQUIRED is set (otherwise sendto is allowed
* anyhow).
* PR_SOCKBUF requires protocol to initialize and destroy its socket buffers
* in its pr_attach and pr_detach.
*/
#define PR_ATOMIC 0x01 /* exchange atomic messages only */
#define PR_ADDR 0x02 /* addresses given with messages */
#define PR_CONNREQUIRED 0x04 /* connection required by protocol */
#define PR_WANTRCVD 0x08 /* want PRU_RCVD calls */
/* was PR_RIGHTS 0x10 passes capabilities */
#define PR_IMPLOPCL 0x20 /* implied open/close */
/* was PR_LASTHDR 0x40 enforce ipsec policy; last header */
#define PR_CAPATTACH 0x80 /* socket can attach in cap mode */
#define PR_SOCKBUF 0x100 /* private implementation of buffers */
struct domain *pffinddomain(int family);
struct protosw *pffindproto(int family, int type, int proto);
int protosw_register(struct domain *, struct protosw *);
int protosw_unregister(struct protosw *);
/* Domains that are known to be avaliable for protosw_register(). */
extern struct domain inetdomain;
extern struct domain inet6domain;
#endif
#endif

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