15e29e981b
- Socket layer becomes MP safe. - Unix protocols become MP safe. - Allows protocol processing interrupts to safely block on locks. - Fixes a number of race conditions. With much feedback from matt@ and plunky@.
136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/* $NetBSD: natm_proto.c,v 1.13 2008/04/24 11:38:39 ad Exp $ */
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/*
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*
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* Copyright (c) 1996 Charles D. Cranor and Washington University.
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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* protocol layer for access to native mode ATM
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: natm_proto.c,v 1.13 2008/04/24 11:38:39 ad Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <net/if.h>
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#include <net/radix.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netnatm/natm.h>
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DOMAIN_DEFINE(natmdomain);
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static void natm_init(void);
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struct npcblist natm_pcbs = LIST_HEAD_INITIALIZER(natm_pcbs);
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struct ifqueue natmintrq; /* natm packet input queue */
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int natmqmaxlen = IFQ_MAXLEN; /* max # of packets on queue */
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PR_WRAP_USRREQ(natm_usrreq)
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#define natm_usrreq natm_usrreq_wrapper
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const struct protosw natmsw[] = {
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{ .pr_type = SOCK_STREAM,
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.pr_domain = &natmdomain,
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.pr_protocol = PROTO_NATMAAL5,
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.pr_flags = PR_CONNREQUIRED,
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.pr_input = 0,
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.pr_output = 0,
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.pr_ctlinput = 0,
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.pr_ctloutput = 0,
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.pr_usrreq = natm_usrreq,
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.pr_init = 0,
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.pr_fasttimo = 0,
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.pr_slowtimo = 0,
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.pr_drain = 0
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},
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{ .pr_type = SOCK_DGRAM,
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.pr_domain = &natmdomain,
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.pr_protocol = PROTO_NATMAAL5,
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.pr_flags = PR_CONNREQUIRED | PR_ATOMIC,
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.pr_input = 0,
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.pr_output = 0,
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.pr_ctlinput = 0,
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.pr_ctloutput = 0,
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.pr_usrreq = natm_usrreq,
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.pr_init = 0,
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.pr_fasttimo = 0,
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.pr_slowtimo = 0,
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.pr_drain = 0
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},
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{ .pr_type = SOCK_STREAM,
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.pr_domain = &natmdomain,
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.pr_protocol = PROTO_NATMAAL0,
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.pr_flags = PR_CONNREQUIRED,
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.pr_input = 0,
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.pr_output = 0,
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.pr_ctlinput = 0,
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.pr_ctloutput = 0,
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.pr_usrreq = natm_usrreq,
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.pr_init = 0,
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.pr_fasttimo = 0,
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.pr_slowtimo = 0,
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.pr_drain = 0
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},
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};
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struct domain natmdomain = {
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.dom_family = PF_NATM,
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.dom_name = "natm",
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.dom_init = natm_init,
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.dom_protosw = natmsw,
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.dom_protoswNPROTOSW = &natmsw[sizeof(natmsw)/sizeof(natmsw[0])],
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.dom_ifqueues = { &natmintrq, NULL },
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.dom_rtcache = LIST_HEAD_INITIALIZER(natmdomain.dom_rtcache)
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};
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#ifdef NATM_STAT
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u_int natm_sodropcnt = 0; /* # mbufs dropped due to full sb */
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u_int natm_sodropbytes = 0; /* # of bytes dropped */
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u_int natm_sookcnt = 0; /* # mbufs ok */
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u_int natm_sookbytes = 0; /* # of bytes ok */
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#endif
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void natm_init(void)
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{
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natmintrq.ifq_maxlen = natmqmaxlen;
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}
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