6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
304 lines
11 KiB
C
304 lines
11 KiB
C
/* $NetBSD: protosw.h,v 1.44 2008/08/06 15:01:24 plunky Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)protosw.h 8.1 (Berkeley) 6/2/93
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*/
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#ifndef _SYS_PROTOSW_H_
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#define _SYS_PROTOSW_H_
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/*
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* Protocol switch table.
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*
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* Each protocol has a handle initializing one of these structures,
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* which is used for protocol-protocol and system-protocol communication.
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*
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* A protocol is called through the pr_init entry before any other.
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* Thereafter it is called every 200ms through the pr_fasttimo entry and
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* every 500ms through the pr_slowtimo for timer based actions.
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* The system will call the pr_drain entry if it is low on space and
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* this should throw away any non-critical data.
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*
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* Protocols pass data between themselves as chains of mbufs using
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* the pr_input and pr_output hooks. Pr_input passes data up (towards
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* UNIX) and pr_output passes it down (towards the imps); control
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* information passes up and down on pr_ctlinput and pr_ctloutput.
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* The protocol is responsible for the space occupied by any the
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* arguments to these entries and must dispose it.
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*
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* The userreq routine interfaces protocols to the system and is
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* described below.
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*/
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struct mbuf;
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struct sockaddr;
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struct socket;
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struct sockopt;
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struct domain;
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struct proc;
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struct lwp;
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struct protosw {
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int pr_type; /* socket type used for */
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struct domain *pr_domain; /* domain protocol a member of */
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short pr_protocol; /* protocol number */
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short pr_flags; /* see below */
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/* protocol-protocol hooks */
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void (*pr_input) /* input to protocol (from below) */
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(struct mbuf *, ...);
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int (*pr_output) /* output to protocol (from above) */
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(struct mbuf *, ...);
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void *(*pr_ctlinput) /* control input (from below) */
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(int, const struct sockaddr *, void *);
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int (*pr_ctloutput) /* control output (from above) */
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(int, struct socket *, struct sockopt *);
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/* user-protocol hook */
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int (*pr_usrreq) /* user request: see list below */
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(struct socket *, int, struct mbuf *,
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struct mbuf *, struct mbuf *, struct lwp *);
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/* utility hooks */
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void (*pr_init) /* initialization hook */
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(void);
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void (*pr_fasttimo) /* fast timeout (200ms) */
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(void);
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void (*pr_slowtimo) /* slow timeout (500ms) */
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(void);
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void (*pr_drain) /* flush any excess space possible */
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(void);
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};
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#define PR_SLOWHZ 2 /* 2 slow timeouts per second */
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#define PR_FASTHZ 5 /* 5 fast timeouts per second */
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/*
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* Values for pr_flags.
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* PR_ADDR requires PR_ATOMIC;
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* PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
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*/
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#define PR_ATOMIC 0x01 /* exchange atomic messages only */
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#define PR_ADDR 0x02 /* addresses given with messages */
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#define PR_CONNREQUIRED 0x04 /* connection required by protocol */
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#define PR_WANTRCVD 0x08 /* want PRU_RCVD calls */
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#define PR_RIGHTS 0x10 /* passes capabilities */
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#define PR_LISTEN 0x20 /* supports listen(2) and accept(2) */
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#define PR_LASTHDR 0x40 /* enforce ipsec policy; last header */
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#define PR_ABRTACPTDIS 0x80 /* abort on accept(2) to disconnected
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socket */
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#define PR_PURGEIF 0x100 /* might store struct ifnet pointer;
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PRU_PURGEIF must be called on ifnet
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deletion */
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/*
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* The arguments to usrreq are:
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* (*protosw[].pr_usrreq)(up, req, m, nam, opt, p);
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* where up is a (struct socket *), req is one of these requests,
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* m is a optional mbuf chain containing a message,
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* nam is an optional mbuf chain containing an address,
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* opt is an optional mbuf containing socket options,
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* and p is a pointer to the process requesting the action (if any).
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* The protocol is responsible for disposal of the mbuf chains m and opt,
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* the caller is responsible for any space held by nam.
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* A non-zero return from usrreq gives an
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* UNIX error number which should be passed to higher level software.
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*/
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#define PRU_ATTACH 0 /* attach protocol to up */
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#define PRU_DETACH 1 /* detach protocol from up */
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#define PRU_BIND 2 /* bind socket to address */
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#define PRU_LISTEN 3 /* listen for connection */
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#define PRU_CONNECT 4 /* establish connection to peer */
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#define PRU_ACCEPT 5 /* accept connection from peer */
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#define PRU_DISCONNECT 6 /* disconnect from peer */
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#define PRU_SHUTDOWN 7 /* won't send any more data */
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#define PRU_RCVD 8 /* have taken data; more room now */
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#define PRU_SEND 9 /* send this data */
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#define PRU_ABORT 10 /* abort (fast DISCONNECT, DETACH) */
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#define PRU_CONTROL 11 /* control operations on protocol */
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#define PRU_SENSE 12 /* return status into m */
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#define PRU_RCVOOB 13 /* retrieve out of band data */
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#define PRU_SENDOOB 14 /* send out of band data */
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#define PRU_SOCKADDR 15 /* fetch socket's address */
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#define PRU_PEERADDR 16 /* fetch peer's address */
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#define PRU_CONNECT2 17 /* connect two sockets */
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/* begin for protocols internal use */
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#define PRU_FASTTIMO 18 /* 200ms timeout */
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#define PRU_SLOWTIMO 19 /* 500ms timeout */
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#define PRU_PROTORCV 20 /* receive from below */
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#define PRU_PROTOSEND 21 /* send to below */
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#define PRU_PURGEIF 22 /* purge specified if */
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#define PRU_NREQ 23
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#ifdef PRUREQUESTS
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static const char * const prurequests[] = {
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"ATTACH", "DETACH", "BIND", "LISTEN",
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"CONNECT", "ACCEPT", "DISCONNECT", "SHUTDOWN",
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"RCVD", "SEND", "ABORT", "CONTROL",
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"SENSE", "RCVOOB", "SENDOOB", "SOCKADDR",
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"PEERADDR", "CONNECT2", "FASTTIMO", "SLOWTIMO",
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"PROTORCV", "PROTOSEND", "PURGEIF",
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};
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#endif
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/*
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* The arguments to the ctlinput routine are
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* (*protosw[].pr_ctlinput)(cmd, sa, arg);
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* where cmd is one of the commands below, sa is a pointer to a sockaddr,
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* and arg is an optional void *argument used within a protocol family.
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*/
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#define PRC_IFDOWN 0 /* interface transition */
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#define PRC_ROUTEDEAD 1 /* select new route if possible ??? */
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#define PRC_QUENCH2 3 /* DEC congestion bit says slow down */
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#define PRC_QUENCH 4 /* some one said to slow down */
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#define PRC_MSGSIZE 5 /* message size forced drop */
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#define PRC_HOSTDEAD 6 /* host appears to be down */
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#define PRC_HOSTUNREACH 7 /* deprecated (use PRC_UNREACH_HOST) */
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#define PRC_UNREACH_NET 8 /* no route to network */
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#define PRC_UNREACH_HOST 9 /* no route to host */
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#define PRC_UNREACH_PROTOCOL 10 /* dst says bad protocol */
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#define PRC_UNREACH_PORT 11 /* bad port # */
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/* was PRC_UNREACH_NEEDFRAG 12 (use PRC_MSGSIZE) */
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#define PRC_UNREACH_SRCFAIL 13 /* source route failed */
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#define PRC_REDIRECT_NET 14 /* net routing redirect */
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#define PRC_REDIRECT_HOST 15 /* host routing redirect */
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#define PRC_REDIRECT_TOSNET 16 /* redirect for type of service & net */
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#define PRC_REDIRECT_TOSHOST 17 /* redirect for tos & host */
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#define PRC_TIMXCEED_INTRANS 18 /* packet lifetime expired in transit */
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#define PRC_TIMXCEED_REASS 19 /* lifetime expired on reass q */
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#define PRC_PARAMPROB 20 /* header incorrect */
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#define PRC_NCMDS 21
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#define PRC_IS_REDIRECT(cmd) \
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((cmd) >= PRC_REDIRECT_NET && (cmd) <= PRC_REDIRECT_TOSHOST)
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#ifdef PRCREQUESTS
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static const char * const prcrequests[] = {
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"IFDOWN", "ROUTEDEAD", "#2", "DEC-BIT-QUENCH2",
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"QUENCH", "MSGSIZE", "HOSTDEAD", "#7",
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"NET-UNREACH", "HOST-UNREACH", "PROTO-UNREACH", "PORT-UNREACH",
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"#12", "SRCFAIL-UNREACH", "NET-REDIRECT", "HOST-REDIRECT",
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"TOSNET-REDIRECT", "TOSHOST-REDIRECT", "TX-INTRANS", "TX-REASS",
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"PARAMPROB"
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};
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#endif
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/*
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* The arguments to ctloutput are:
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* (*protosw[].pr_ctloutput)(req, so, sopt);
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* req is one of the actions listed below, so is a (struct socket *),
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* sopt is a (struct sockopt *)
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* A non-zero return from usrreq gives an
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* UNIX error number which should be passed to higher level software.
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*/
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#define PRCO_GETOPT 0
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#define PRCO_SETOPT 1
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#define PRCO_NCMDS 2
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#ifdef PRCOREQUESTS
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static const char * const prcorequests[] = {
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"GETOPT", "SETOPT",
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};
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#endif
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#ifdef _KERNEL
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/*
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* Monotonically increasing time values for slow and fast timers.
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*/
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extern u_int pfslowtimo_now;
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extern u_int pffasttimo_now;
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#define PRT_SLOW_ARM(t, nticks) (t) = (pfslowtimo_now + (nticks))
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#define PRT_FAST_ARM(t, nticks) (t) = (pffasttimo_now + (nticks))
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#define PRT_SLOW_DISARM(t) (t) = 0
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#define PRT_FAST_DISARM(t) (t) = 0
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#define PRT_SLOW_ISARMED(t) ((t) != 0)
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#define PRT_FAST_ISARMED(t) ((t) != 0)
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#define PRT_SLOW_ISEXPIRED(t) (PRT_SLOW_ISARMED((t)) && (t) <= pfslowtimo_now)
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#define PRT_FAST_ISEXPIRED(t) (PRT_FAST_ISARMED((t)) && (t) <= pffasttimo_now)
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struct sockaddr;
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const struct protosw *pffindproto(int, int, int);
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const struct protosw *pffindtype(int, int);
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struct domain *pffinddomain(int);
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void pfctlinput(int, const struct sockaddr *);
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void pfctlinput2(int, const struct sockaddr *, void *);
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/*
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* Wrappers for non-MPSAFE protocols
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*/
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#include <sys/systm.h> /* kernel_lock */
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#define PR_WRAP_USRREQ(name) \
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static int \
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name##_wrapper(struct socket *a, int b, struct mbuf *c, \
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struct mbuf *d, struct mbuf *e, struct lwp *f) \
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{ \
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int rv; \
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KERNEL_LOCK(1, NULL); \
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rv = name(a, b, c, d, e, f); \
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KERNEL_UNLOCK_ONE(NULL); \
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return rv; \
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}
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#define PR_WRAP_CTLOUTPUT(name) \
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static int \
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name##_wrapper(int a, struct socket *b, \
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struct sockopt *c) \
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{ \
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int rv; \
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KERNEL_LOCK(1, NULL); \
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rv = name(a, b, c); \
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KERNEL_UNLOCK_ONE(NULL); \
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return rv; \
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}
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#define PR_WRAP_CTLINPUT(name) \
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static void * \
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name##_wrapper(int a, const struct sockaddr *b, void *c)\
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{ \
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void *rv; \
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KERNEL_LOCK(1, NULL); \
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rv = name(a, b, c); \
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KERNEL_UNLOCK_ONE(NULL); \
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return rv; \
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}
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#endif /* _KERNEL */
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#endif /* !_SYS_PROTOSW_H_ */
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