1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _SYS_PROTOSW_H_ 33 #define _SYS_PROTOSW_H_ 34 35 #include <sys/queue.h> 36 37 /* Forward declare these structures referenced from prototypes below. */ 38 struct kaiocb; 39 struct mbuf; 40 struct thread; 41 struct sockaddr; 42 struct socket; 43 struct sockopt; 44 45 /*#ifdef _KERNEL*/ 46 /* 47 * Protocol switch table. 48 * 49 * Each protocol has a handle initializing one of these structures, 50 * which is used for protocol-protocol and system-protocol communication. 51 * 52 * In retrospect, it would be a lot nicer to use an interface 53 * similar to the vnode VOP interface. 54 */ 55 struct ifnet; 56 struct stat; 57 struct ucred; 58 struct uio; 59 60 /* USE THESE FOR YOUR PROTOTYPES ! */ 61 typedef int pr_ctloutput_t(struct socket *, struct sockopt *); 62 typedef int pr_setsbopt_t(struct socket *, struct sockopt *); 63 typedef void pr_abort_t(struct socket *); 64 typedef int pr_accept_t(struct socket *, struct sockaddr *); 65 typedef int pr_attach_t(struct socket *, int, struct thread *); 66 typedef int pr_bind_t(struct socket *, struct sockaddr *, struct thread *); 67 typedef int pr_connect_t(struct socket *, struct sockaddr *, 68 struct thread *); 69 typedef int pr_connect2_t(struct socket *, struct socket *); 70 typedef int pr_control_t(struct socket *, unsigned long, void *, 71 struct ifnet *, struct thread *); 72 typedef void pr_detach_t(struct socket *); 73 typedef int pr_disconnect_t(struct socket *); 74 typedef int pr_listen_t(struct socket *, int, struct thread *); 75 typedef int pr_peeraddr_t(struct socket *, struct sockaddr *); 76 typedef int pr_rcvd_t(struct socket *, int); 77 typedef int pr_rcvoob_t(struct socket *, struct mbuf *, int); 78 typedef enum { 79 PRUS_OOB = 0x1, 80 PRUS_EOF = 0x2, 81 PRUS_MORETOCOME = 0x4, 82 PRUS_NOTREADY = 0x8, 83 PRUS_IPV6 = 0x10, 84 } pr_send_flags_t; 85 typedef int pr_send_t(struct socket *, int, struct mbuf *, 86 struct sockaddr *, struct mbuf *, struct thread *); 87 typedef int pr_ready_t(struct socket *, struct mbuf *, int); 88 typedef int pr_sense_t(struct socket *, struct stat *); 89 typedef int pr_shutdown_t(struct socket *); 90 typedef int pr_flush_t(struct socket *, int); 91 typedef int pr_sockaddr_t(struct socket *, struct sockaddr *); 92 typedef int pr_sosend_t(struct socket *, struct sockaddr *, struct uio *, 93 struct mbuf *, struct mbuf *, int, struct thread *); 94 typedef int pr_soreceive_t(struct socket *, struct sockaddr **, 95 struct uio *, struct mbuf **, struct mbuf **, int *); 96 typedef int pr_sopoll_t(struct socket *, int, struct ucred *, 97 struct thread *); 98 typedef void pr_sosetlabel_t(struct socket *); 99 typedef void pr_close_t(struct socket *); 100 typedef int pr_bindat_t(int, struct socket *, struct sockaddr *, 101 struct thread *); 102 typedef int pr_connectat_t(int, struct socket *, struct sockaddr *, 103 struct thread *); 104 typedef int pr_aio_queue_t(struct socket *, struct kaiocb *); 105 106 struct protosw { 107 short pr_type; /* socket type used for */ 108 short pr_protocol; /* protocol number */ 109 short pr_flags; /* see below */ 110 short pr_unused; 111 struct domain *pr_domain; /* domain protocol a member of */ 112 113 pr_soreceive_t *pr_soreceive; /* recv(2) */ 114 pr_rcvd_t *pr_rcvd; /* soreceive_generic() if PR_WANTRCVD */ 115 pr_sosend_t *pr_sosend; /* send(2) */ 116 pr_send_t *pr_send; /* send(2) via sosend_generic() */ 117 pr_ready_t *pr_ready; /* sendfile/ktls readyness */ 118 pr_sopoll_t *pr_sopoll; /* poll(2) */ 119 /* Cache line #2 */ 120 pr_attach_t *pr_attach; /* creation: socreate(), sonewconn() */ 121 pr_detach_t *pr_detach; /* destruction: sofree() */ 122 pr_connect_t *pr_connect; /* connect(2) */ 123 pr_disconnect_t *pr_disconnect; /* sodisconnect() */ 124 pr_close_t *pr_close; /* close(2) */ 125 pr_shutdown_t *pr_shutdown; /* shutdown(2) */ 126 pr_abort_t *pr_abort; /* abrupt tear down: soabort() */ 127 pr_aio_queue_t *pr_aio_queue; /* aio(9) */ 128 /* Cache line #3 */ 129 pr_bind_t *pr_bind; /* bind(2) */ 130 pr_bindat_t *pr_bindat; /* bindat(2) */ 131 pr_listen_t *pr_listen; /* listen(2) */ 132 pr_accept_t *pr_accept; /* accept(2) */ 133 pr_connectat_t *pr_connectat; /* connectat(2) */ 134 pr_connect2_t *pr_connect2; /* socketpair(2) */ 135 pr_control_t *pr_control; /* ioctl(2) */ 136 pr_rcvoob_t *pr_rcvoob; /* soreceive_rcvoob() */ 137 /* Cache line #4 */ 138 pr_ctloutput_t *pr_ctloutput; /* control output (from above) */ 139 pr_peeraddr_t *pr_peeraddr; /* getpeername(2) */ 140 pr_sockaddr_t *pr_sockaddr; /* getsockname(2) */ 141 pr_sense_t *pr_sense; /* stat(2) */ 142 pr_flush_t *pr_flush; /* XXXGL: merge with pr_shutdown_t! */ 143 pr_sosetlabel_t *pr_sosetlabel; /* MAC, XXXGL: remove */ 144 pr_setsbopt_t *pr_setsbopt; /* Socket buffer ioctls */ 145 }; 146 /*#endif*/ 147 148 /* 149 * Values for pr_flags. 150 * PR_ADDR requires PR_ATOMIC; 151 * PR_ADDR and PR_CONNREQUIRED are mutually exclusive. 152 * PR_IMPLOPCL means that the protocol allows sendto without prior connect, 153 * and the protocol understands the MSG_EOF flag. The first property is 154 * is only relevant if PR_CONNREQUIRED is set (otherwise sendto is allowed 155 * anyhow). 156 * PR_SOCKBUF requires protocol to initialize and destroy its socket buffers 157 * in its pr_attach and pr_detach. 158 */ 159 #define PR_ATOMIC 0x01 /* exchange atomic messages only */ 160 #define PR_ADDR 0x02 /* addresses given with messages */ 161 #define PR_CONNREQUIRED 0x04 /* connection required by protocol */ 162 #define PR_WANTRCVD 0x08 /* want PRU_RCVD calls */ 163 #define PR_RIGHTS 0x10 /* passes capabilities */ 164 #define PR_IMPLOPCL 0x20 /* implied open/close */ 165 /* was PR_LASTHDR 0x40 enforce ipsec policy; last header */ 166 #define PR_CAPATTACH 0x80 /* socket can attach in cap mode */ 167 #define PR_SOCKBUF 0x100 /* private implementation of buffers */ 168 169 /* 170 * The arguments to ctloutput are: 171 * (*protosw[].pr_ctloutput)(req, so, level, optname, optval, p); 172 * req is one of the actions listed below, so is a (struct socket *), 173 * level is an indication of which protocol layer the option is intended. 174 * optname is a protocol dependent socket option request, 175 * optval is a pointer to a mbuf-chain pointer, for value-return results. 176 * The protocol is responsible for disposal of the mbuf chain *optval 177 * if supplied, 178 * the caller is responsible for any space held by *optval, when returned. 179 * A non-zero return from ctloutput gives an 180 * UNIX error number which should be passed to higher level software. 181 */ 182 #define PRCO_GETOPT 0 183 #define PRCO_SETOPT 1 184 185 #define PRCO_NCMDS 2 186 187 #ifdef PRCOREQUESTS 188 char *prcorequests[] = { 189 "GETOPT", "SETOPT", 190 }; 191 #endif 192 193 #ifdef _KERNEL 194 struct domain *pffinddomain(int family); 195 struct protosw *pffindproto(int family, int type, int proto); 196 int protosw_register(struct domain *, struct protosw *); 197 int protosw_unregister(struct protosw *); 198 199 /* Domains that are known to be avaliable for protosw_register(). */ 200 extern struct domain inetdomain; 201 extern struct domain inet6domain; 202 #endif 203 204 #endif 205