File: [local] / src / sys / netinet / in_proto.c (download)
Revision 1.104, Sun Apr 14 20:46:27 2024 UTC (8 weeks, 1 day ago) by bluhm
Branch: MAIN
CVS Tags: HEAD
Changes since 1.103: +3 -3 lines
Run raw IP input in parallel.
Running raw IPv4 input with shared net lock in parallel is less
complex than UDP. Especially there is no socket splicing.
New ip_deliver() may run with shared or exclusive net lock. The
last parameter indicates the mode. If is is running with shared
netlock and encounters a protocol that needs exclusive lock, the
packet is queued. Old ip_ours() always queued the packet. Now it
calls ip_deliver() with shared net lock, and if that cannot handle
the packet completely, the packet is queued and later processed
with exclusive net lock.
In case of an IPv6 header chain, that switches from shared to
exclusive processing, the next protocol and mbuf offset are stored
in a mbuf tag.
OK mvs@
|
/* $OpenBSD: in_proto.c,v 1.104 2024/04/14 20:46:27 bluhm Exp $ */
/* $NetBSD: in_proto.c,v 1.14 1996/02/18 18:58:32 christos Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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 project 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 PROJECT 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 PROJECT 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.
*/
/*
* 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.
*
* @(#)COPYRIGHT 1.1 (NRL) 17 January 1995
*
* NRL grants permission for redistribution and use in source and binary
* forms, with or without modification, of the software and documentation
* created at NRL 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgements:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* This product includes software developed at the Information
* Technology Division, US Naval Research Laboratory.
* 4. Neither the name of the NRL nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL 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 NRL 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.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the US Naval
* Research Laboratory (NRL).
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/route.h>
#include <net/rtable.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_icmp.h>
#include <netinet/in_pcb.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <netinet/igmp_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
/*
* TCP/IP protocol family: IP, ICMP, UDP, TCP.
*/
#include "gif.h"
#if NGIF > 0
#include <net/if_gif.h>
#endif
#ifdef INET6
#include <netinet6/ip6_var.h>
#endif /* INET6 */
#ifdef IPSEC
#include <netinet/ip_ipsp.h>
#endif
#include <netinet/ip_ether.h>
#include <netinet/ip_ipip.h>
#include "gre.h"
#if NGRE > 0
#include <netinet/ip_gre.h>
#include <net/if_gre.h>
#endif
#include "carp.h"
#if NCARP > 0
#include <netinet/ip_carp.h>
#endif
#include "pfsync.h"
#if NPFSYNC > 0
#include <net/pfvar.h>
#include <net/if_pfsync.h>
#endif
#include "pf.h"
#if NPF > 0
#include <netinet/ip_divert.h>
#endif
#include "etherip.h"
#if NETHERIP > 0
#include <net/if_etherip.h>
#endif
u_char ip_protox[IPPROTO_MAX];
const struct protosw inetsw[] = {
{
.pr_domain = &inetdomain,
.pr_init = ip_init,
.pr_slowtimo = ip_slowtimo,
.pr_sysctl = ip_sysctl
},
{
.pr_type = SOCK_DGRAM,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_UDP,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_SPLICE,
.pr_input = udp_input,
.pr_ctlinput = udp_ctlinput,
.pr_ctloutput = ip_ctloutput,
.pr_usrreqs = &udp_usrreqs,
.pr_init = udp_init,
.pr_sysctl = udp_sysctl
},
{
.pr_type = SOCK_STREAM,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_TCP,
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS|PR_SPLICE,
.pr_input = tcp_input,
.pr_ctlinput = tcp_ctlinput,
.pr_ctloutput = tcp_ctloutput,
.pr_usrreqs = &tcp_usrreqs,
.pr_init = tcp_init,
.pr_slowtimo = tcp_slowtimo,
.pr_sysctl = tcp_sysctl
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_RAW,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_MPINPUT,
.pr_input = rip_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_ICMP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = icmp_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_init = icmp_init,
.pr_sysctl = icmp_sysctl
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_IPV4,
.pr_flags = PR_ATOMIC|PR_ADDR,
#if NGIF > 0
.pr_input = in_gif_input,
#else
.pr_input = ipip_input,
#endif
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = ipip_sysctl,
.pr_init = ipip_init
},
#ifdef INET6
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_IPV6,
.pr_flags = PR_ATOMIC|PR_ADDR,
#if NGIF > 0
.pr_input = in_gif_input,
#else
.pr_input = ipip_input,
#endif
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs, /* XXX */
},
#endif
#if defined(MPLS) && NGIF > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_MPLS,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = in_gif_input,
.pr_usrreqs = &rip_usrreqs,
},
#endif /* MPLS && GIF */
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_IGMP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = igmp_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_init = igmp_init,
.pr_fasttimo = igmp_fasttimo,
.pr_slowtimo = igmp_slowtimo,
.pr_sysctl = igmp_sysctl
},
#ifdef IPSEC
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_AH,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = ah46_input,
.pr_ctlinput = ah4_ctlinput,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = ah_sysctl
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_ESP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = esp46_input,
.pr_ctlinput = esp4_ctlinput,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = esp_sysctl
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_IPCOMP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = ipcomp46_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = ipcomp_sysctl
},
#endif /* IPSEC */
#if NGRE > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_GRE,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = gre_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &gre_usrreqs,
.pr_sysctl = gre_sysctl
},
#endif /* NGRE > 0 */
#if NCARP > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_CARP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = carp_proto_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = carp_sysctl
},
#endif /* NCARP > 0 */
#if NPFSYNC > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_PFSYNC,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = pfsync_input4,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = pfsync_sysctl
},
#endif /* NPFSYNC > 0 */
#if NPF > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_DIVERT,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &divert_usrreqs,
.pr_init = divert_init,
.pr_sysctl = divert_sysctl
},
#endif /* NPF > 0 */
#if NETHERIP > 0
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_ETHERIP,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = ip_etherip_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_sysctl = etherip_sysctl
},
#endif /* NETHERIP */
{
/* raw wildcard */
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_MPINPUT,
.pr_input = rip_input,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs,
.pr_init = rip_init
}
};
const struct domain inetdomain = {
.dom_family = AF_INET,
.dom_name = "inet",
.dom_init = in_init,
.dom_protosw = inetsw,
.dom_protoswNPROTOSW = &inetsw[nitems(inetsw)],
.dom_sasize = sizeof(struct sockaddr_in),
.dom_rtoffset = offsetof(struct sockaddr_in, sin_addr),
.dom_maxplen = 32
};
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