[apple/xnu.git] / bsd / netinet / in_proto.c

/*
 * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 *
 *	@(#)in_proto.c	8.2 (Berkeley) 2/9/95
 */

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>

#include <kern/debug.h>

#include <net/if.h>
#include <net/route.h>
#include <net/kpi_protocol.h>

#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_icmp.h>
#include <netinet/igmp_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcpip.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/ip_encap.h>
#include <netinet/ip_divert.h>


/*
 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
 */

#if IPSEC
#include <netinet6/ipsec.h>
#include <netinet6/ah.h>
#if IPSEC_ESP
#include <netinet6/esp.h>
#endif
#include <netinet6/ipcomp.h>
#endif /* IPSEC */

static void in_dinit(struct domain *);
static void ip_proto_input(protocol_family_t, mbuf_t);

extern struct domain inetdomain_s;
static struct pr_usrreqs nousrreqs;
extern struct pr_usrreqs icmp_dgram_usrreqs;
extern int icmp_dgram_ctloutput(struct socket *, struct sockopt *);

struct domain *inetdomain = NULL;

/* Thanks to PPP, this still needs to be exported */
lck_mtx_t	*inet_domain_mutex;

static struct protosw inetsw[] = {
{
	.pr_type =		0,
	.pr_protocol =		0,
	.pr_init =		ip_init,
	.pr_drain =		ip_drain,
	.pr_usrreqs =		&nousrreqs,
},
{
	.pr_type =		SOCK_DGRAM,
	.pr_protocol =		IPPROTO_UDP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_PROTOLOCK|PR_PCBLOCK|
				PR_EVCONNINFO|PR_PRECONN_WRITE,
	.pr_input =		udp_input,
	.pr_ctlinput =		udp_ctlinput,
	.pr_ctloutput =		udp_ctloutput,
	.pr_init =		udp_init,
	.pr_usrreqs =		&udp_usrreqs,
	.pr_lock =		udp_lock,
	.pr_unlock =		udp_unlock,
	.pr_getlock =		udp_getlock,
},
{
	.pr_type =		SOCK_STREAM,
	.pr_protocol =		IPPROTO_TCP,
	.pr_flags =		PR_CONNREQUIRED|PR_WANTRCVD|PR_PCBLOCK|
				PR_PROTOLOCK|PR_DISPOSE|PR_EVCONNINFO|
				PR_PRECONN_WRITE|PR_DATA_IDEMPOTENT,
	.pr_input =		tcp_input,
	.pr_ctlinput =		tcp_ctlinput,
	.pr_ctloutput =		tcp_ctloutput,
	.pr_init =		tcp_init,
	.pr_drain =		tcp_drain,
	.pr_usrreqs =		&tcp_usrreqs,
	.pr_lock =		tcp_lock,
	.pr_unlock =		tcp_unlock,
	.pr_getlock =		tcp_getlock,
},
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_RAW,
	.pr_flags =		PR_ATOMIC|PR_ADDR,
	.pr_input =		rip_input,
	.pr_ctlinput =		rip_ctlinput,
	.pr_ctloutput =		rip_ctloutput,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_ICMP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		icmp_input,
	.pr_ctloutput =		rip_ctloutput,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
{
	.pr_type =		SOCK_DGRAM,
	.pr_protocol =		IPPROTO_ICMP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		icmp_input,
	.pr_ctloutput =		icmp_dgram_ctloutput,
	.pr_usrreqs =		&icmp_dgram_usrreqs,
	.pr_unlock =		rip_unlock,
},
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_IGMP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		igmp_input,
	.pr_ctloutput =		rip_ctloutput,
	.pr_init =		igmp_init,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_GRE,
	.pr_flags =		PR_ATOMIC|PR_ADDR,
	.pr_input =		gre_input,
	.pr_ctlinput =		rip_ctlinput,
	.pr_ctloutput =		rip_ctloutput,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
#if IPSEC
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_AH,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
	.pr_input =		ah4_input,
	.pr_usrreqs =		&nousrreqs,
},
#if IPSEC_ESP
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_ESP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
	.pr_input =		esp4_input,
	.pr_usrreqs =		&nousrreqs,
},
#endif /* IPSEC_ESP */
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_IPCOMP,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
	.pr_input =		ipcomp4_input,
	.pr_usrreqs =		&nousrreqs,
},
#endif /* IPSEC */
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_IPV4,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		encap4_input,
	.pr_ctloutput =		rip_ctloutput,
	.pr_init =		encap4_init,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
#if INET6
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_IPV6,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		encap4_input,
	.pr_ctloutput =		rip_ctloutput,
	.pr_init =		encap4_init,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
#endif /* INET6 */
#if IPDIVERT
{
	.pr_type =		SOCK_RAW,
	.pr_protocol =		IPPROTO_DIVERT,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_PCBLOCK,
	.pr_input =		div_input,
	.pr_ctloutput =		ip_ctloutput,
	.pr_init =		div_init,
	.pr_usrreqs =		&div_usrreqs,
	.pr_lock =		div_lock,
	.pr_unlock =		div_unlock,
	.pr_getlock =		div_getlock,
},
#endif /* IPDIVERT */
/* raw wildcard */
{
	.pr_type =		SOCK_RAW,
	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
	.pr_input =		rip_input,
	.pr_ctloutput =		rip_ctloutput,
	.pr_init =		rip_init,
	.pr_usrreqs =		&rip_usrreqs,
	.pr_unlock =		rip_unlock,
},
};

static int in_proto_count = (sizeof (inetsw) / sizeof (struct protosw));

struct domain inetdomain_s = {
	.dom_family =		PF_INET,
	.dom_flags =		DOM_REENTRANT,
	.dom_name =		"internet",
	.dom_init =		in_dinit,
	.dom_rtattach =		in_inithead,
	.dom_rtoffset =		32,
	.dom_maxrtkey =		sizeof (struct sockaddr_in),
	.dom_protohdrlen =	sizeof (struct tcpiphdr),
};

/* Initialize the PF_INET domain, and add in the pre-defined protos */
void
in_dinit(struct domain *dp)
{
	struct protosw *pr;
	int i;
	domain_unguard_t unguard;

	VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
	VERIFY(inetdomain == NULL);

	inetdomain = dp;

	/*
	 * Verify that the maximum possible tcp/ip header will still
	 * fit in a small mbuf because m_pullup only puls into 256
	 * byte mbuf
	 */
	_CASSERT((sizeof(struct tcpiphdr) + TCP_MAXOLEN) <= _MHLEN);

	/*
	 * Attach first, then initialize; ip_init() needs raw IP handler.
	 */
	for (i = 0, pr = &inetsw[0]; i < in_proto_count; i++, pr++)
		net_add_proto(pr, dp, 0);
	for (i = 0, pr = &inetsw[0]; i < in_proto_count; i++, pr++)
		net_init_proto(pr, dp);

	inet_domain_mutex = dp->dom_mtx;

	unguard = domain_unguard_deploy();
	i = proto_register_input(PF_INET, ip_proto_input, NULL, 1);
	if (i != 0) {
		panic("%s: failed to register PF_INET protocol: %d\n",
		    __func__, i);
		/* NOTREACHED */
	}
	domain_unguard_release(unguard);
}

static void
ip_proto_input(protocol_family_t protocol, mbuf_t packet_list)
{
#pragma unused(protocol)

	if (packet_list->m_nextpkt != NULL) {
		ip_input_process_list(packet_list);
	} else {
		/*
		 * XXX remove this path if ip_input_process_list is proven
		 * to be stable and has minimum overhead on most platforms.
		 */
		ip_input(packet_list);
	}
}

SYSCTL_NODE(_net, PF_INET, inet,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "Internet Family");

SYSCTL_NODE(_net_inet, IPPROTO_IP, ip,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "IP");
SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "ICMP");
SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "UDP");
SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "TCP");
SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "IGMP");
#if IPSEC
SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "IPSEC");
#endif /* IPSEC */
SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "RAW");
#if IPDIVERT
SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div,
	CTLFLAG_RW|CTLFLAG_LOCKED, 0, "DIVERT");
#endif /* IPDIVERT */
Commit	Line	Data
1c79356b	1	/*
39236c6e	2	* Copyright (c) 2000-2013 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Copyright (c) 1982, 1986, 1993
	30	* The Regents of the University of California. All rights reserved.
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions
	34	* are met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright
	38	* notice, this list of conditions and the following disclaimer in the
	39	* documentation and/or other materials provided with the distribution.
	40	* 3. All advertising materials mentioning features or use of this software
	41	* must display the following acknowledgement:
	42	* This product includes software developed by the University of
	43	* California, Berkeley and its contributors.
	44	* 4. Neither the name of the University nor the names of its contributors
	45	* may be used to endorse or promote products derived from this software
	46	* without specific prior written permission.
	47	*
	48	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	49	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	50	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	51	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	52	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	53	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	54	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	55	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	56	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	57	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	58	* SUCH DAMAGE.
	59	*
	60	* @(#)in_proto.c 8.2 (Berkeley) 2/9/95
	61	*/
	62
1c79356b A	63	#include <sys/param.h>
	64	#include <sys/kernel.h>
	65	#include <sys/socket.h>
	66	#include <sys/domain.h>
	67	#include <sys/protosw.h>
9bccf70c	68	#include <sys/queue.h>
1c79356b	69	#include <sys/sysctl.h>
91447636	70	#include <sys/mbuf.h>
1c79356b	71
39236c6e A	72	#include <kern/debug.h>
39236c6e A	73
1c79356b A	74	#include <net/if.h>
1c79356b A	75	#include <net/route.h>
39037602	76	#include <net/kpi_protocol.h>
1c79356b A	77
1c79356b A	78	#include <netinet/in.h>
39236c6e	79	#include <netinet/in_var.h>
1c79356b A	80	#include <netinet/in_systm.h>
	81	#include <netinet/ip.h>
	82	#include <netinet/ip_var.h>
1c79356b A	83	#include <netinet/ip_icmp.h>
	84	#include <netinet/igmp_var.h>
	85	#include <netinet/tcp.h>
	86	#include <netinet/tcp_timer.h>
	87	#include <netinet/tcp_var.h>
	88	#include <netinet/tcpip.h>
	89	#include <netinet/udp.h>
	90	#include <netinet/udp_var.h>
9bccf70c	91	#include <netinet/ip_encap.h>
91447636	92	#include <netinet/ip_divert.h>
9bccf70c A	93
9bccf70c A	94
1c79356b A	95	/*
	96	* TCP/IP protocol family: IP, ICMP, UDP, TCP.
	97	*/
	98
	99	#if IPSEC
	100	#include <netinet6/ipsec.h>
	101	#include <netinet6/ah.h>
	102	#if IPSEC_ESP
	103	#include <netinet6/esp.h>
	104	#endif
	105	#include <netinet6/ipcomp.h>
	106	#endif /* IPSEC */
	107
39236c6e A	108	static void in_dinit(struct domain *);
39236c6e A	109	static void ip_proto_input(protocol_family_t, mbuf_t);
1c79356b	110
39236c6e A	111	extern struct domain inetdomain_s;
	112	static struct pr_usrreqs nousrreqs;
	113	extern struct pr_usrreqs icmp_dgram_usrreqs;
9bccf70c	114	extern int icmp_dgram_ctloutput(struct socket , struct sockopt );
1c79356b	115
39236c6e A	116	struct domain *inetdomain = NULL;
	117
	118	/* Thanks to PPP, this still needs to be exported */
	119	lck_mtx_t *inet_domain_mutex;
91447636	120
39236c6e A	121	static struct protosw inetsw[] = {
	122	{
	123	.pr_type = 0,
	124	.pr_protocol = 0,
	125	.pr_init = ip_init,
	126	.pr_drain = ip_drain,
	127	.pr_usrreqs = &nousrreqs,
1c79356b	128	},
39236c6e A	129	{
	130	.pr_type = SOCK_DGRAM,
	131	.pr_protocol = IPPROTO_UDP,
	132	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_PROTOLOCK\|PR_PCBLOCK\|
3e170ce0	133	PR_EVCONNINFO\|PR_PRECONN_WRITE,
39236c6e A	134	.pr_input = udp_input,
	135	.pr_ctlinput = udp_ctlinput,
	136	.pr_ctloutput = udp_ctloutput,
	137	.pr_init = udp_init,
	138	.pr_usrreqs = &udp_usrreqs,
	139	.pr_lock = udp_lock,
	140	.pr_unlock = udp_unlock,
	141	.pr_getlock = udp_getlock,
1c79356b	142	},
39236c6e A	143	{
	144	.pr_type = SOCK_STREAM,
	145	.pr_protocol = IPPROTO_TCP,
	146	.pr_flags = PR_CONNREQUIRED\|PR_WANTRCVD\|PR_PCBLOCK\|
3e170ce0 A	147	PR_PROTOLOCK\|PR_DISPOSE\|PR_EVCONNINFO\|
3e170ce0 A	148	PR_PRECONN_WRITE\|PR_DATA_IDEMPOTENT,
39236c6e A	149	.pr_input = tcp_input,
	150	.pr_ctlinput = tcp_ctlinput,
	151	.pr_ctloutput = tcp_ctloutput,
	152	.pr_init = tcp_init,
	153	.pr_drain = tcp_drain,
	154	.pr_usrreqs = &tcp_usrreqs,
	155	.pr_lock = tcp_lock,
	156	.pr_unlock = tcp_unlock,
	157	.pr_getlock = tcp_getlock,
1c79356b	158	},
39236c6e A	159	{
	160	.pr_type = SOCK_RAW,
	161	.pr_protocol = IPPROTO_RAW,
	162	.pr_flags = PR_ATOMIC\|PR_ADDR,
	163	.pr_input = rip_input,
	164	.pr_ctlinput = rip_ctlinput,
	165	.pr_ctloutput = rip_ctloutput,
	166	.pr_usrreqs = &rip_usrreqs,
	167	.pr_unlock = rip_unlock,
1c79356b	168	},
39236c6e A	169	{
	170	.pr_type = SOCK_RAW,
	171	.pr_protocol = IPPROTO_ICMP,
	172	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	173	.pr_input = icmp_input,
	174	.pr_ctloutput = rip_ctloutput,
	175	.pr_usrreqs = &rip_usrreqs,
	176	.pr_unlock = rip_unlock,
1c79356b	177	},
39236c6e A	178	{
	179	.pr_type = SOCK_DGRAM,
	180	.pr_protocol = IPPROTO_ICMP,
	181	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	182	.pr_input = icmp_input,
	183	.pr_ctloutput = icmp_dgram_ctloutput,
	184	.pr_usrreqs = &icmp_dgram_usrreqs,
	185	.pr_unlock = rip_unlock,
9bccf70c	186	},
39236c6e A	187	{
	188	.pr_type = SOCK_RAW,
	189	.pr_protocol = IPPROTO_IGMP,
	190	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	191	.pr_input = igmp_input,
	192	.pr_ctloutput = rip_ctloutput,
	193	.pr_init = igmp_init,
	194	.pr_usrreqs = &rip_usrreqs,
	195	.pr_unlock = rip_unlock,
1c79356b	196	},
39236c6e A	197	{
	198	.pr_type = SOCK_RAW,
	199	.pr_protocol = IPPROTO_GRE,
	200	.pr_flags = PR_ATOMIC\|PR_ADDR,
	201	.pr_input = gre_input,
	202	.pr_ctlinput = rip_ctlinput,
	203	.pr_ctloutput = rip_ctloutput,
	204	.pr_usrreqs = &rip_usrreqs,
	205	.pr_unlock = rip_unlock,
	206	},
1c79356b	207	#if IPSEC
39236c6e A	208	{
	209	.pr_type = SOCK_RAW,
	210	.pr_protocol = IPPROTO_AH,
	211	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_PROTOLOCK,
	212	.pr_input = ah4_input,
	213	.pr_usrreqs = &nousrreqs,
1c79356b A	214	},
1c79356b A	215	#if IPSEC_ESP
39236c6e A	216	{
	217	.pr_type = SOCK_RAW,
	218	.pr_protocol = IPPROTO_ESP,
	219	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_PROTOLOCK,
	220	.pr_input = esp4_input,
	221	.pr_usrreqs = &nousrreqs,
1c79356b	222	},
39236c6e A	223	#endif /* IPSEC_ESP */
	224	{
	225	.pr_type = SOCK_RAW,
	226	.pr_protocol = IPPROTO_IPCOMP,
	227	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_PROTOLOCK,
	228	.pr_input = ipcomp4_input,
	229	.pr_usrreqs = &nousrreqs,
1c79356b A	230	},
1c79356b A	231	#endif /* IPSEC */
39236c6e A	232	{
	233	.pr_type = SOCK_RAW,
	234	.pr_protocol = IPPROTO_IPV4,
	235	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	236	.pr_input = encap4_input,
	237	.pr_ctloutput = rip_ctloutput,
	238	.pr_init = encap4_init,
	239	.pr_usrreqs = &rip_usrreqs,
	240	.pr_unlock = rip_unlock,
1c79356b	241	},
39236c6e A	242	#if INET6
	243	{
	244	.pr_type = SOCK_RAW,
	245	.pr_protocol = IPPROTO_IPV6,
	246	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	247	.pr_input = encap4_input,
	248	.pr_ctloutput = rip_ctloutput,
	249	.pr_init = encap4_init,
	250	.pr_usrreqs = &rip_usrreqs,
	251	.pr_unlock = rip_unlock,
1c79356b	252	},
39236c6e	253	#endif /* INET6 */
1c79356b	254	#if IPDIVERT
39236c6e A	255	{
	256	.pr_type = SOCK_RAW,
	257	.pr_protocol = IPPROTO_DIVERT,
	258	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_PCBLOCK,
	259	.pr_input = div_input,
	260	.pr_ctloutput = ip_ctloutput,
	261	.pr_init = div_init,
	262	.pr_usrreqs = &div_usrreqs,
	263	.pr_lock = div_lock,
	264	.pr_unlock = div_unlock,
	265	.pr_getlock = div_getlock,
1c79356b	266	},
39236c6e A	267	#endif /* IPDIVERT */
	268	/* raw wildcard */
	269	{
	270	.pr_type = SOCK_RAW,
	271	.pr_flags = PR_ATOMIC\|PR_ADDR\|PR_LASTHDR,
	272	.pr_input = rip_input,
	273	.pr_ctloutput = rip_ctloutput,
	274	.pr_init = rip_init,
	275	.pr_usrreqs = &rip_usrreqs,
	276	.pr_unlock = rip_unlock,
1c79356b A	277	},
	278	};
	279
39236c6e A	280	static int in_proto_count = (sizeof (inetsw) / sizeof (struct protosw));
	281
	282	struct domain inetdomain_s = {
	283	.dom_family = PF_INET,
	284	.dom_flags = DOM_REENTRANT,
	285	.dom_name = "internet",
	286	.dom_init = in_dinit,
	287	.dom_rtattach = in_inithead,
	288	.dom_rtoffset = 32,
	289	.dom_maxrtkey = sizeof (struct sockaddr_in),
	290	.dom_protohdrlen = sizeof (struct tcpiphdr),
	291	};
	292
	293	/* Initialize the PF_INET domain, and add in the pre-defined protos */
	294	void
	295	in_dinit(struct domain *dp)
	296	{
	297	struct protosw *pr;
	298	int i;
	299	domain_unguard_t unguard;
	300
	301	VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
	302	VERIFY(inetdomain == NULL);
1c79356b	303
39236c6e	304	inetdomain = dp;
1c79356b	305
39037602 A	306	/*
	307	* Verify that the maximum possible tcp/ip header will still
	308	* fit in a small mbuf because m_pullup only puls into 256
	309	* byte mbuf
	310	*/
	311	_CASSERT((sizeof(struct tcpiphdr) + TCP_MAXOLEN) <= _MHLEN);
	312
39236c6e A	313	/*
	314	* Attach first, then initialize; ip_init() needs raw IP handler.
	315	*/
	316	for (i = 0, pr = &inetsw[0]; i < in_proto_count; i++, pr++)
	317	net_add_proto(pr, dp, 0);
	318	for (i = 0, pr = &inetsw[0]; i < in_proto_count; i++, pr++)
	319	net_init_proto(pr, dp);
1c79356b	320
39236c6e	321	inet_domain_mutex = dp->dom_mtx;
1c79356b	322
39236c6e A	323	unguard = domain_unguard_deploy();
	324	i = proto_register_input(PF_INET, ip_proto_input, NULL, 1);
	325	if (i != 0) {
	326	panic("%s: failed to register PF_INET protocol: %d\n",
	327	__func__, i);
	328	/* NOTREACHED */
	329	}
	330	domain_unguard_release(unguard);
	331	}
1c79356b	332
39236c6e A	333	static void
	334	ip_proto_input(protocol_family_t protocol, mbuf_t packet_list)
	335	{
	336	#pragma unused(protocol)
39236c6e	337
3e170ce0 A	338	if (packet_list->m_nextpkt != NULL) {
	339	ip_input_process_list(packet_list);
	340	} else {
	341	/*
	342	* XXX remove this path if ip_input_process_list is proven
	343	* to be stable and has minimum overhead on most platforms.
	344	*/
	345	ip_input(packet_list);
39236c6e A	346	}
	347	}
	348
	349	SYSCTL_NODE(_net, PF_INET, inet,
	350	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "Internet Family");
	351
	352	SYSCTL_NODE(_net_inet, IPPROTO_IP, ip,
	353	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "IP");
	354	SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp,
	355	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "ICMP");
	356	SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp,
	357	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "UDP");
	358	SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp,
	359	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "TCP");
	360	SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp,
	361	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "IGMP");
1c79356b	362	#if IPSEC
39236c6e A	363	SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec,
39236c6e A	364	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "IPSEC");
1c79356b	365	#endif /* IPSEC */
39236c6e A	366	SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw,
39236c6e A	367	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "RAW");
1c79356b	368	#if IPDIVERT
39236c6e A	369	SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div,
	370	CTLFLAG_RW\|CTLFLAG_LOCKED, 0, "DIVERT");
	371	#endif /* IPDIVERT */