michael@0: /*-
michael@0:  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
michael@0:  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
michael@0:  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions are met:
michael@0:  *
michael@0:  * a) Redistributions of source code must retain the above copyright notice,
michael@0:  *    this list of conditions and the following disclaimer.
michael@0:  *
michael@0:  * b) Redistributions in binary form must reproduce the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer in
michael@0:  *    the documentation and/or other materials provided with the distribution.
michael@0:  *
michael@0:  * c) Neither the name of Cisco Systems, Inc. nor the names of its
michael@0:  *    contributors may be used to endorse or promote products derived
michael@0:  *    from this software without specific prior written permission.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
michael@0:  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
michael@0:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
michael@0:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
michael@0:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
michael@0:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
michael@0:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
michael@0:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
michael@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
michael@0:  * THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  */
michael@0: 
michael@0: #ifdef __FreeBSD__
michael@0: #include <sys/cdefs.h>
michael@0: __FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 257555 2013-11-02 20:12:19Z tuexen $");
michael@0: #endif
michael@0: 
michael@0: #include <netinet/sctp_os.h>
michael@0: #ifdef INET6
michael@0: #ifdef __FreeBSD__
michael@0: #include <sys/proc.h>
michael@0: #endif
michael@0: #include <netinet/sctp_pcb.h>
michael@0: #include <netinet/sctp_header.h>
michael@0: #include <netinet/sctp_var.h>
michael@0: #ifdef INET6
michael@0: #include <netinet6/sctp6_var.h>
michael@0: #endif
michael@0: #include <netinet/sctp_sysctl.h>
michael@0: #include <netinet/sctp_output.h>
michael@0: #include <netinet/sctp_uio.h>
michael@0: #include <netinet/sctp_asconf.h>
michael@0: #include <netinet/sctputil.h>
michael@0: #include <netinet/sctp_indata.h>
michael@0: #include <netinet/sctp_timer.h>
michael@0: #include <netinet/sctp_auth.h>
michael@0: #include <netinet/sctp_input.h>
michael@0: #include <netinet/sctp_output.h>
michael@0: #include <netinet/sctp_bsd_addr.h>
michael@0: #include <netinet/sctp_crc32.h>
michael@0: #if !defined(__Userspace_os_Windows)
michael@0: #include <netinet/udp.h>
michael@0: #endif
michael@0: 
michael@0: #if defined(__APPLE__)
michael@0: #define APPLE_FILE_NO 9
michael@0: #endif
michael@0: #ifdef IPSEC
michael@0: #include <netipsec/ipsec.h>
michael@0: #ifdef INET6
michael@0: #include <netipsec/ipsec6.h>
michael@0: #endif /* INET6 */
michael@0: #endif /* IPSEC */
michael@0: 
michael@0: #if !defined(__Userspace__)
michael@0: extern struct protosw inetsw[];
michael@0: #endif
michael@0: #if defined(__Panda__) || defined(__Userspace__)
michael@0: int ip6_v6only=0;
michael@0: #endif
michael@0: #if defined(__Userspace__)
michael@0: void
michael@0: in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
michael@0: {
michael@0: #if defined(__Userspace_os_Windows)
michael@0: 	uint32_t temp;
michael@0: #endif
michael@0: 	bzero(sin, sizeof(*sin));
michael@0: #ifdef HAVE_SIN_LEN
michael@0: 	sin->sin_len = sizeof(struct sockaddr_in);
michael@0: #endif
michael@0: 	sin->sin_family = AF_INET;
michael@0: 	sin->sin_port = sin6->sin6_port;
michael@0: #if defined(__Userspace_os_Windows)
michael@0: 	temp = sin6->sin6_addr.s6_addr16[7];
michael@0: 	temp = temp << 16;
michael@0: 	temp = temp | sin6->sin6_addr.s6_addr16[6];
michael@0: 	sin->sin_addr.s_addr = temp;
michael@0: 	sctp_print_address((struct sockaddr*)sin);
michael@0: #else
michael@0: 	sin->sin_addr.s_addr = sin6->sin6_addr.s6_addr32[3];
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void
michael@0: in6_sin6_2_sin_in_sock(struct sockaddr *nam)
michael@0: {
michael@0: 	struct sockaddr_in *sin_p;
michael@0: 	struct sockaddr_in6 sin6;
michael@0: 
michael@0: 	/* save original sockaddr_in6 addr and convert it to sockaddr_in  */
michael@0: 	sin6 = *(struct sockaddr_in6 *)nam;
michael@0: 	sin_p = (struct sockaddr_in *)nam;
michael@0: 	in6_sin6_2_sin(sin_p, &sin6);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #if !defined(__Userspace__)
michael@0: int
michael@0: #if defined(__APPLE__) || defined(__FreeBSD__)
michael@0: sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port)
michael@0: #elif defined( __Panda__)
michael@0: sctp6_input(pakhandle_type *i_pak)
michael@0: #else
michael@0: sctp6_input(struct mbuf **i_pak, int *offp, int proto)
michael@0: #endif
michael@0: {
michael@0: 	struct mbuf *m;
michael@0: 	int iphlen;
michael@0: 	uint32_t vrf_id;
michael@0: 	uint8_t ecn_bits;
michael@0: 	struct sockaddr_in6 src, dst;
michael@0: 	struct ip6_hdr *ip6;
michael@0: 	struct sctphdr *sh;
michael@0: 	struct sctp_chunkhdr *ch;
michael@0: 	int length, offset;
michael@0: #if !defined(SCTP_WITH_NO_CSUM)
michael@0: 	uint8_t compute_crc;
michael@0: #endif
michael@0: #if defined(__FreeBSD__)
michael@0: 	uint32_t mflowid;
michael@0: 	uint8_t use_mflowid;
michael@0: #endif
michael@0: #if !(defined(__APPLE__) || defined (__FreeBSD__))
michael@0: 	uint16_t port = 0;
michael@0: #endif
michael@0: 
michael@0: #if defined(__Panda__)
michael@0: 	/* This is Evil, but its the only way to make panda work right. */
michael@0: 	iphlen = sizeof(struct ip6_hdr);
michael@0: #else
michael@0: 	iphlen = *offp;
michael@0: #endif
michael@0: 	if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
michael@0: 		SCTP_RELEASE_PKT(*i_pak);
michael@0: 		return (IPPROTO_DONE);
michael@0: 	}
michael@0: 	m = SCTP_HEADER_TO_CHAIN(*i_pak);
michael@0: #ifdef __Panda__
michael@0: 	SCTP_DETACH_HEADER_FROM_CHAIN(*i_pak);
michael@0: 	(void)SCTP_RELEASE_HEADER(*i_pak);
michael@0: #endif
michael@0: #ifdef SCTP_MBUF_LOGGING
michael@0: 	/* Log in any input mbufs */
michael@0: 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
michael@0: 		struct mbuf *mat;
michael@0: 
michael@0: 		for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
michael@0: 			if (SCTP_BUF_IS_EXTENDED(mat)) {
michael@0: 				sctp_log_mb(mat, SCTP_MBUF_INPUT);
michael@0: 			}
michael@0: 		}
michael@0: 	}
michael@0: #endif
michael@0: #ifdef SCTP_PACKET_LOGGING
michael@0: 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) {
michael@0: 		sctp_packet_log(m);
michael@0: 	}
michael@0: #endif
michael@0: #if defined(__FreeBSD__)
michael@0: #if __FreeBSD_version > 1000049
michael@0: 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
michael@0: 	        "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n",
michael@0: 	        m->m_pkthdr.len,
michael@0: 	        if_name(m->m_pkthdr.rcvif),
michael@0: 	        (int)m->m_pkthdr.csum_flags, CSUM_BITS);
michael@0: #elif __FreeBSD_version >= 800000
michael@0: 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
michael@0: 	        "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
michael@0: 	        m->m_pkthdr.len,
michael@0: 	        if_name(m->m_pkthdr.rcvif),
michael@0: 	        m->m_pkthdr.csum_flags);
michael@0: #else
michael@0: 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
michael@0: 	        "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
michael@0: 	        m->m_pkthdr.len,
michael@0: 	        m->m_pkthdr.rcvif->if_xname,
michael@0: 	        m->m_pkthdr.csum_flags);
michael@0: #endif
michael@0: #endif
michael@0: #if defined(__APPLE__)
michael@0: 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
michael@0: 	        "sctp6_input(): Packet of length %d received on %s%d with csum_flags 0x%x.\n",
michael@0: 	        m->m_pkthdr.len,
michael@0: 	        m->m_pkthdr.rcvif->if_name,
michael@0: 	        m->m_pkthdr.rcvif->if_unit,
michael@0: 	        m->m_pkthdr.csum_flags);
michael@0: #endif
michael@0: #if defined(__Windows__)
michael@0: 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
michael@0: 	        "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
michael@0: 	        m->m_pkthdr.len,
michael@0: 	        m->m_pkthdr.rcvif->if_xname,
michael@0: 	        m->m_pkthdr.csum_flags);
michael@0: #endif
michael@0: #if defined(__FreeBSD__)
michael@0: 	if (m->m_flags & M_FLOWID) {
michael@0: 		mflowid = m->m_pkthdr.flowid;
michael@0: 		use_mflowid = 1;
michael@0: 	} else {
michael@0: 		mflowid = 0;
michael@0: 		use_mflowid = 0;
michael@0: 	}
michael@0: #endif
michael@0: 	SCTP_STAT_INCR(sctps_recvpackets);
michael@0: 	SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
michael@0: 	/* Get IP, SCTP, and first chunk header together in the first mbuf. */
michael@0: 	offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);
michael@0: 	ip6 = mtod(m, struct ip6_hdr *);
michael@0: 	IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen,
michael@0: 		       (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr)));
michael@0: 	if (sh == NULL) {
michael@0: 		SCTP_STAT_INCR(sctps_hdrops);
michael@0: 		return (IPPROTO_DONE);
michael@0: 	}
michael@0: 	ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
michael@0: 	offset -= sizeof(struct sctp_chunkhdr);
michael@0: 	memset(&src, 0, sizeof(struct sockaddr_in6));
michael@0: 	src.sin6_family = AF_INET6;
michael@0: #ifdef HAVE_SIN6_LEN
michael@0: 	src.sin6_len = sizeof(struct sockaddr_in6);
michael@0: #endif
michael@0: 	src.sin6_port = sh->src_port;
michael@0: 	src.sin6_addr = ip6->ip6_src;
michael@0: #if defined(__FreeBSD__)
michael@0: #if defined(__APPLE__)
michael@0: 	/* XXX: This code should also be used on Apple */
michael@0: #endif
michael@0:  	if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
michael@0: 		goto out;
michael@0: 	}
michael@0: #endif
michael@0: 	memset(&dst, 0, sizeof(struct sockaddr_in6));
michael@0: 	dst.sin6_family = AF_INET6;
michael@0: #ifdef HAVE_SIN6_LEN
michael@0: 	dst.sin6_len = sizeof(struct sockaddr_in6);
michael@0: #endif
michael@0: 	dst.sin6_port = sh->dest_port;
michael@0: 	dst.sin6_addr = ip6->ip6_dst;
michael@0: #if defined(__FreeBSD__)
michael@0: #if defined(__APPLE__)
michael@0: 	/* XXX: This code should also be used on Apple */
michael@0: #endif
michael@0:  	if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
michael@0: 		goto out;
michael@0: 	}
michael@0: #endif
michael@0: #ifdef __FreeBSD__
michael@0: 	if (faithprefix_p != NULL && (*faithprefix_p) (&dst.sin6_addr)) {
michael@0: 		/* XXX send icmp6 host/port unreach? */
michael@0: 		goto out;
michael@0: 	}
michael@0: #endif
michael@0: #if defined(__APPLE__)
michael@0: #if defined(NFAITH) && 0 < NFAITH
michael@0: 	if (faithprefix(&dst.sin6_addr)) {
michael@0: 		goto out;
michael@0: 	}
michael@0: #endif
michael@0: #endif
michael@0: 	length = ntohs(ip6->ip6_plen) + iphlen;
michael@0: 	/* Validate mbuf chain length with IP payload length. */
michael@0: 	if (SCTP_HEADER_LEN(m) != length) {
michael@0: 		SCTPDBG(SCTP_DEBUG_INPUT1,
michael@0: 		        "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m));
michael@0: 		SCTP_STAT_INCR(sctps_hdrops);
michael@0: 		goto out;
michael@0: 	}
michael@0: 	if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
michael@0: 		goto out;
michael@0: 	}
michael@0: 	ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
michael@0: #if defined(SCTP_WITH_NO_CSUM)
michael@0: 	SCTP_STAT_INCR(sctps_recvnocrc);
michael@0: #else
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 800000
michael@0: 	if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
michael@0: 		SCTP_STAT_INCR(sctps_recvhwcrc);
michael@0: 		compute_crc = 0;
michael@0: 	} else {
michael@0: #else
michael@0: 	if (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) &&
michael@0: 	    (IN6_ARE_ADDR_EQUAL(&src.sin6_addr, &dst.sin6_addr))) {
michael@0: 		SCTP_STAT_INCR(sctps_recvnocrc);
michael@0: 		compute_crc = 0;
michael@0: 	} else {
michael@0: #endif
michael@0: 		SCTP_STAT_INCR(sctps_recvswcrc);
michael@0: 		compute_crc = 1;
michael@0: 	}
michael@0: #endif
michael@0: 	sctp_common_input_processing(&m, iphlen, offset, length,
michael@0: 	                             (struct sockaddr *)&src,
michael@0: 	                             (struct sockaddr *)&dst,
michael@0: 	                             sh, ch,
michael@0: #if !defined(SCTP_WITH_NO_CSUM)
michael@0: 	                             compute_crc,
michael@0: #endif
michael@0: 	                             ecn_bits,
michael@0: #if defined(__FreeBSD__)
michael@0: 	                             use_mflowid, mflowid,
michael@0: #endif
michael@0: 	                             vrf_id, port);
michael@0:  out:
michael@0: 	if (m) {
michael@0: 		sctp_m_freem(m);
michael@0: 	}
michael@0: 	return (IPPROTO_DONE);
michael@0: }
michael@0: 
michael@0: #if defined(__APPLE__)
michael@0: int
michael@0: sctp6_input(struct mbuf **i_pak, int *offp)
michael@0: {
michael@0: 	return (sctp6_input_with_port(i_pak, offp, 0));
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #if defined(__FreeBSD__)
michael@0: int
michael@0: sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
michael@0: {
michael@0: 	return (sctp6_input_with_port(i_pak, offp, 0));
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #if defined(__Panda__)
michael@0: void
michael@0: #else
michael@0: static void
michael@0: #endif
michael@0: sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6,
michael@0: 		  struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net)
michael@0: {
michael@0: 	uint32_t nxtsz;
michael@0: 
michael@0: 	if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
michael@0: 	    (icmp6 == NULL) || (sh == NULL)) {
michael@0: 		goto out;
michael@0: 	}
michael@0: 	/* First do we even look at it? */
michael@0: 	if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag))
michael@0: 		goto out;
michael@0: 
michael@0: 	if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) {
michael@0: 		/* not PACKET TO BIG */
michael@0: 		goto out;
michael@0: 	}
michael@0: 	/*
michael@0: 	 * ok we need to look closely. We could even get smarter and look at
michael@0: 	 * anyone that we sent to in case we get a different ICMP that tells
michael@0: 	 * us there is no way to reach a host, but for this impl, all we
michael@0: 	 * care about is MTU discovery.
michael@0: 	 */
michael@0: 	nxtsz = ntohl(icmp6->icmp6_mtu);
michael@0: 	/* Stop any PMTU timer */
michael@0: 	sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ+SCTP_LOC_1);
michael@0: 
michael@0: 	/* Adjust destination size limit */
michael@0: 	if (net->mtu > nxtsz) {
michael@0: 		net->mtu = nxtsz;
michael@0: 		if (net->port) {
michael@0: 			net->mtu -= sizeof(struct udphdr);
michael@0: 		}
michael@0: 	}
michael@0: 	/* now what about the ep? */
michael@0: 	if (stcb->asoc.smallest_mtu > nxtsz) {
michael@0: 		struct sctp_tmit_chunk *chk;
michael@0: 
michael@0: 		/* Adjust that too */
michael@0: 		stcb->asoc.smallest_mtu = nxtsz;
michael@0: 		/* now off to subtract IP_DF flag if needed */
michael@0: 
michael@0: 		TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
michael@0: 			if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
michael@0: 				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
michael@0: 			}
michael@0: 		}
michael@0: 		TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
michael@0: 			if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
michael@0: 				/*
michael@0: 				 * For this guy we also mark for immediate
michael@0: 				 * resend since we sent to big of chunk
michael@0: 				 */
michael@0: 				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
michael@0: 				if (chk->sent != SCTP_DATAGRAM_RESEND)
michael@0: 					stcb->asoc.sent_queue_retran_cnt++;
michael@0: 				chk->sent = SCTP_DATAGRAM_RESEND;
michael@0: 				chk->rec.data.doing_fast_retransmit = 0;
michael@0: 
michael@0: 				chk->sent = SCTP_DATAGRAM_RESEND;
michael@0: 				/* Clear any time so NO RTT is being done */
michael@0: 				chk->sent_rcv_time.tv_sec = 0;
michael@0: 				chk->sent_rcv_time.tv_usec = 0;
michael@0: 				stcb->asoc.total_flight -= chk->send_size;
michael@0: 				net->flight_size -= chk->send_size;
michael@0: 			}
michael@0: 		}
michael@0: 	}
michael@0: 	sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
michael@0: out:
michael@0: 	if (stcb) {
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 	}
michael@0: }
michael@0: #endif
michael@0: 
michael@0: 
michael@0: void
michael@0: sctp6_notify(struct sctp_inpcb *inp,
michael@0:     struct icmp6_hdr *icmph,
michael@0:     struct sctphdr *sh,
michael@0:     struct sockaddr *to,
michael@0:     struct sctp_tcb *stcb,
michael@0:     struct sctp_nets *net)
michael@0: {
michael@0: #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
michael@0: 	struct socket *so;
michael@0: 
michael@0: #endif
michael@0: 
michael@0: 	/* protection */
michael@0: 	if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
michael@0: 	    (sh == NULL) || (to == NULL)) {
michael@0: 		if (stcb)
michael@0: 			SCTP_TCB_UNLOCK(stcb);
michael@0: 		return;
michael@0: 	}
michael@0: 	/* First job is to verify the vtag matches what I would send */
michael@0: 	if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 		return;
michael@0: 	}
michael@0: 	if (icmph->icmp6_type != ICMP_UNREACH) {
michael@0: 		/* We only care about unreachable */
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 		return;
michael@0: 	}
michael@0: 	if ((icmph->icmp6_code == ICMP_UNREACH_NET) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_HOST) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_NET_UNKNOWN) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_HOST_UNKNOWN) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_ISOLATED) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_NET_PROHIB) ||
michael@0: 	    (icmph->icmp6_code == ICMP_UNREACH_HOST_PROHIB) ||
michael@0: #if defined(__Panda__)
michael@0:             (icmph->icmp6_code == ICMP_UNREACH_ADMIN)) {
michael@0: #elif defined(__Userspace_os_NetBSD)
michael@0:             (icmph->icmp6_code == ICMP_UNREACH_ADMIN_PROHIBIT)) {
michael@0: #else
michael@0:             (icmph->icmp6_code == ICMP_UNREACH_FILTER_PROHIB)) {
michael@0: #endif
michael@0: 
michael@0: 		/*
michael@0: 		 * Hmm reachablity problems we must examine closely. If its
michael@0: 		 * not reachable, we may have lost a network. Or if there is
michael@0: 		 * NO protocol at the other end named SCTP. well we consider
michael@0: 		 * it a OOTB abort.
michael@0: 		 */
michael@0: 		if (net->dest_state & SCTP_ADDR_REACHABLE) {
michael@0: 			/* Ok that destination is NOT reachable */
michael@0: 			net->dest_state &= ~SCTP_ADDR_REACHABLE;
michael@0: 			net->dest_state &= ~SCTP_ADDR_PF;
michael@0: 			sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
michael@0: 					stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
michael@0: 		}
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 	} else  if ((icmph->icmp6_code == ICMP_UNREACH_PROTOCOL) ||
michael@0: 		    (icmph->icmp6_code == ICMP_UNREACH_PORT)) {
michael@0: 		/*
michael@0: 		 * Here the peer is either playing tricks on us,
michael@0: 		 * including an address that belongs to someone who
michael@0: 		 * does not support SCTP OR was a userland
michael@0: 		 * implementation that shutdown and now is dead. In
michael@0: 		 * either case treat it like a OOTB abort with no
michael@0: 		 * TCB
michael@0: 		 */
michael@0: 		sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
michael@0: #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
michael@0: 		so = SCTP_INP_SO(inp);
michael@0: 		atomic_add_int(&stcb->asoc.refcnt, 1);
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 		SCTP_SOCKET_LOCK(so, 1);
michael@0: 		SCTP_TCB_LOCK(stcb);
michael@0: 		atomic_subtract_int(&stcb->asoc.refcnt, 1);
michael@0: #endif
michael@0: 		(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ+SCTP_LOC_2);
michael@0: #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
michael@0: 		SCTP_SOCKET_UNLOCK(so, 1);
michael@0: 		/* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed.*/
michael@0: #endif
michael@0: 		/* no need to unlock here, since the TCB is gone */
michael@0: 	} else {
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 	}
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: #if !defined(__Panda__) && !defined(__Userspace__)
michael@0: void
michael@0: sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
michael@0: {
michael@0: 	struct sctphdr sh;
michael@0: 	struct ip6ctlparam *ip6cp = NULL;
michael@0: 	uint32_t vrf_id;
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 	vrf_id = SCTP_DEFAULT_VRFID;
michael@0: #endif
michael@0: 
michael@0: #ifdef HAVE_SA_LEN
michael@0: 	if (pktdst->sa_family != AF_INET6 ||
michael@0: 	    pktdst->sa_len != sizeof(struct sockaddr_in6))
michael@0: #else
michael@0: 	if (pktdst->sa_family != AF_INET6)
michael@0: #endif
michael@0: 		return;
michael@0: 
michael@0: 	if ((unsigned)cmd >= PRC_NCMDS)
michael@0: 		return;
michael@0: 	if (PRC_IS_REDIRECT(cmd)) {
michael@0: 		d = NULL;
michael@0: 	} else if (inet6ctlerrmap[cmd] == 0) {
michael@0: 		return;
michael@0: 	}
michael@0: 	/* if the parameter is from icmp6, decode it. */
michael@0: 	if (d != NULL) {
michael@0: 		ip6cp = (struct ip6ctlparam *)d;
michael@0: 	} else {
michael@0: 		ip6cp = (struct ip6ctlparam *)NULL;
michael@0: 	}
michael@0: 
michael@0: 	if (ip6cp) {
michael@0: 		/*
michael@0: 		 * XXX: We assume that when IPV6 is non NULL, M and OFF are
michael@0: 		 * valid.
michael@0: 		 */
michael@0: 		/* check if we can safely examine src and dst ports */
michael@0: 		struct sctp_inpcb *inp = NULL;
michael@0: 		struct sctp_tcb *stcb = NULL;
michael@0: 		struct sctp_nets *net = NULL;
michael@0: 		struct sockaddr_in6 final;
michael@0: 
michael@0: 		if (ip6cp->ip6c_m == NULL)
michael@0: 			return;
michael@0: 
michael@0: 		bzero(&sh, sizeof(sh));
michael@0: 		bzero(&final, sizeof(final));
michael@0: 		inp = NULL;
michael@0: 		net = NULL;
michael@0: 		m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh),
michael@0: 		    (caddr_t)&sh);
michael@0: 		ip6cp->ip6c_src->sin6_port = sh.src_port;
michael@0: #ifdef HAVE_SIN6_LEN
michael@0: 		final.sin6_len = sizeof(final);
michael@0: #endif
michael@0: 		final.sin6_family = AF_INET6;
michael@0: #if defined(__FreeBSD__) && __FreeBSD_cc_version < 440000
michael@0: 		final.sin6_addr = *ip6cp->ip6c_finaldst;
michael@0: #else
michael@0: 		final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr;
michael@0: #endif				/* __FreeBSD_cc_version */
michael@0: 		final.sin6_port = sh.dest_port;
michael@0: 		stcb = sctp_findassociation_addr_sa((struct sockaddr *)&final,
michael@0: 		    (struct sockaddr *)ip6cp->ip6c_src,
michael@0: 		    &inp, &net, 1, vrf_id);
michael@0: 		/* inp's ref-count increased && stcb locked */
michael@0: 		if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
michael@0: 			if (cmd == PRC_MSGSIZE) {
michael@0: 				sctp6_notify_mbuf(inp,
michael@0: 				    ip6cp->ip6c_icmp6,
michael@0: 				    &sh,
michael@0: 				    stcb,
michael@0: 				    net);
michael@0: 				/* inp's ref-count reduced && stcb unlocked */
michael@0: 			} else {
michael@0: 				sctp6_notify(inp, ip6cp->ip6c_icmp6, &sh,
michael@0: 				    (struct sockaddr *)&final,
michael@0: 				    stcb, net);
michael@0: 				/* inp's ref-count reduced && stcb unlocked */
michael@0: 			}
michael@0: 		} else {
michael@0: #if !defined(__Windows__)
michael@0: 			if (PRC_IS_REDIRECT(cmd) && inp) {
michael@0: 				in6_rtchange((struct in6pcb *)inp,
michael@0: 				    inet6ctlerrmap[cmd]);
michael@0: 			}
michael@0: #endif
michael@0: 			if (inp) {
michael@0: 				/* reduce inp's ref-count */
michael@0: 				SCTP_INP_WLOCK(inp);
michael@0: 				SCTP_INP_DECR_REF(inp);
michael@0: 				SCTP_INP_WUNLOCK(inp);
michael@0: 			}
michael@0: 			if (stcb)
michael@0: 				SCTP_TCB_UNLOCK(stcb);
michael@0: 		}
michael@0: 	}
michael@0: }
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * this routine can probably be collasped into the one in sctp_userreq.c
michael@0:  * since they do the same thing and now we lookup with a sockaddr
michael@0:  */
michael@0: #ifdef __FreeBSD__
michael@0: static int
michael@0: sctp6_getcred(SYSCTL_HANDLER_ARGS)
michael@0: {
michael@0: 	struct xucred xuc;
michael@0: 	struct sockaddr_in6 addrs[2];
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	struct sctp_nets *net;
michael@0: 	struct sctp_tcb *stcb;
michael@0: 	int error;
michael@0: 	uint32_t vrf_id;
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__)
michael@0: 	vrf_id = SCTP_DEFAULT_VRFID;
michael@0: #else
michael@0: 	vrf_id = panda_get_vrf_from_call(); /* from connectx call? */
michael@0: #endif
michael@0: 
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version > 602000
michael@0: 	error = priv_check(req->td, PRIV_NETINET_GETCRED);
michael@0: #elif defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: 	error = suser(req->td);
michael@0: #else
michael@0: 	error = suser(req->p);
michael@0: #endif
michael@0: 	if (error)
michael@0: 		return (error);
michael@0: 
michael@0: 	if (req->newlen != sizeof(addrs)) {
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 	if (req->oldlen != sizeof(struct ucred)) {
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 	error = SYSCTL_IN(req, addrs, sizeof(addrs));
michael@0: 	if (error)
michael@0: 		return (error);
michael@0: 
michael@0: 	stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
michael@0: 	    sin6tosa(&addrs[0]),
michael@0: 	    &inp, &net, 1, vrf_id);
michael@0: 	if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
michael@0: 		if ((inp != NULL) && (stcb == NULL)) {
michael@0: 			/* reduce ref-count */
michael@0: 			SCTP_INP_WLOCK(inp);
michael@0: 			SCTP_INP_DECR_REF(inp);
michael@0: 			goto cred_can_cont;
michael@0: 		}
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
michael@0: 		error = ENOENT;
michael@0: 		goto out;
michael@0: 	}
michael@0: 	SCTP_TCB_UNLOCK(stcb);
michael@0: 	/* We use the write lock here, only
michael@0: 	 * since in the error leg we need it.
michael@0: 	 * If we used RLOCK, then we would have
michael@0: 	 * to wlock/decr/unlock/rlock. Which
michael@0: 	 * in theory could create a hole. Better
michael@0: 	 * to use higher wlock.
michael@0: 	 */
michael@0: 	SCTP_INP_WLOCK(inp);
michael@0:  cred_can_cont:
michael@0: 	error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
michael@0: 	if (error) {
michael@0: 		SCTP_INP_WUNLOCK(inp);
michael@0: 		goto out;
michael@0: 	}
michael@0: 	cru2x(inp->sctp_socket->so_cred, &xuc);
michael@0: 	SCTP_INP_WUNLOCK(inp);
michael@0: 	error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
michael@0: out:
michael@0: 	return (error);
michael@0: }
michael@0: 
michael@0: SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
michael@0:     0, 0,
michael@0:     sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
michael@0: 
michael@0: #endif
michael@0: 
michael@0: /* This is the same as the sctp_abort() could be made common */
michael@0: #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
michael@0: static void
michael@0: #elif defined(__Panda__) || defined(__Userspace__)
michael@0: int
michael@0: #else
michael@0: static int
michael@0: #endif
michael@0: sctp6_abort(struct socket *so)
michael@0: {
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	uint32_t flags;
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
michael@0: 		return;
michael@0: #else
michael@0: 		return (EINVAL);
michael@0: #endif
michael@0: 	}
michael@0:  sctp_must_try_again:
michael@0: 	flags = inp->sctp_flags;
michael@0: #ifdef SCTP_LOG_CLOSING
michael@0: 	sctp_log_closing(inp, NULL, 17);
michael@0: #endif
michael@0: 	if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
michael@0: 	    (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
michael@0: #ifdef SCTP_LOG_CLOSING
michael@0: 		sctp_log_closing(inp, NULL, 16);
michael@0: #endif
michael@0: 		sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
michael@0: 				SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
michael@0: 		SOCK_LOCK(so);
michael@0: 		SCTP_SB_CLEAR(so->so_snd);
michael@0: 		/* same for the rcv ones, they are only
michael@0: 		 * here for the accounting/select.
michael@0: 		 */
michael@0: 		SCTP_SB_CLEAR(so->so_rcv);
michael@0: #if defined(__APPLE__)
michael@0: 		so->so_usecount--;
michael@0: #else
michael@0: 		/* Now null out the reference, we are completely detached. */
michael@0: 		so->so_pcb = NULL;
michael@0: #endif
michael@0: 		SOCK_UNLOCK(so);
michael@0: 	} else {
michael@0: 		flags = inp->sctp_flags;
michael@0: 		if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
michael@0: 			goto sctp_must_try_again;
michael@0: 		}
michael@0: 	}
michael@0: #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__)
michael@0: 	return;
michael@0: #else
michael@0: 	return (0);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: static int
michael@0: sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
michael@0: #elif defined(__Panda__) || defined(__Userspace__)
michael@0: int
michael@0: sctp6_attach(struct socket *so, int proto SCTP_UNUSED, uint32_t vrf_id)
michael@0: #elif defined(__Windows__)
michael@0: static int
michael@0: sctp6_attach(struct socket *so, int proto SCTP_UNUSED, PKTHREAD p SCTP_UNUSED)
michael@0: #else
michael@0: static int
michael@0: sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct proc *p SCTP_UNUSED)
michael@0: #endif
michael@0: {
michael@0: 	struct in6pcb *inp6;
michael@0: 	int error;
michael@0: 	struct sctp_inpcb *inp;
michael@0: #if !defined(__Panda__) && !defined(__Userspace__)
michael@0: 	uint32_t vrf_id = SCTP_DEFAULT_VRFID;
michael@0: #endif
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp != NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 
michael@0: 	if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
michael@0: 		error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
michael@0: 		if (error)
michael@0: 			return (error);
michael@0: 	}
michael@0: 	error = sctp_inpcb_alloc(so, vrf_id);
michael@0: 	if (error)
michael@0: 		return (error);
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	SCTP_INP_WLOCK(inp);
michael@0: 	inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6;	/* I'm v6! */
michael@0: 	inp6 = (struct in6pcb *)inp;
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
michael@0: 	inp6->inp_vflag |= INP_IPV6;
michael@0: #else
michael@0: 	inp->inp_vflag |= INP_IPV6;
michael@0: #endif
michael@0: #if !defined(__Panda__)
michael@0: 	inp6->in6p_hops = -1;	/* use kernel default */
michael@0: 	inp6->in6p_cksum = -1;	/* just to be sure */
michael@0: #endif
michael@0: #ifdef INET
michael@0: 	/*
michael@0: 	 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
michael@0: 	 * socket as well, because the socket may be bound to an IPv6
michael@0: 	 * wildcard address, which may match an IPv4-mapped IPv6 address.
michael@0: 	 */
michael@0: 	inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
michael@0: #endif
michael@0: 	/*
michael@0: 	 * Hmm what about the IPSEC stuff that is missing here but in
michael@0: 	 * sctp_attach()?
michael@0: 	 */
michael@0: 	SCTP_INP_WUNLOCK(inp);
michael@0: 	return (0);
michael@0: }
michael@0: 
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: static int
michael@0: sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
michael@0: {
michael@0: #elif defined(__FreeBSD__) || defined(__APPLE__)
michael@0: static int
michael@0: sctp6_bind(struct socket *so, struct sockaddr *addr, struct proc *p)
michael@0: {
michael@0: #elif defined(__Panda__) || defined(__Userspace__)
michael@0: int
michael@0: sctp6_bind(struct socket *so, struct sockaddr *addr, void * p)
michael@0: {
michael@0: #elif defined(__Windows__)
michael@0: static int
michael@0: sctp6_bind(struct socket *so, struct sockaddr *addr, PKTHREAD p)
michael@0: {
michael@0: #else
michael@0: static int
michael@0: sctp6_bind(struct socket *so, struct mbuf *nam, struct proc *p)
michael@0: {
michael@0: 	struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
michael@0: 
michael@0: #endif
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	struct in6pcb *inp6;
michael@0: 	int error;
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 
michael@0: #if !defined(__Windows__)
michael@0: 	if (addr) {
michael@0: 		switch (addr->sa_family) {
michael@0: #ifdef INET
michael@0: 		case AF_INET:
michael@0: #ifdef HAVE_SA_LEN
michael@0: 			if (addr->sa_len != sizeof(struct sockaddr_in)) {
michael@0: 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 				return (EINVAL);
michael@0: 			}
michael@0: #endif
michael@0: 			break;
michael@0: #endif
michael@0: #ifdef INET6
michael@0: 		case AF_INET6:
michael@0: #ifdef HAVE_SA_LEN
michael@0: 			if (addr->sa_len != sizeof(struct sockaddr_in6)) {
michael@0: 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 				return (EINVAL);
michael@0: 			}
michael@0: #endif
michael@0: 			break;
michael@0: #endif
michael@0: 		default:
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 	}
michael@0: #endif
michael@0: 	inp6 = (struct in6pcb *)inp;
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
michael@0: 	inp6->inp_vflag &= ~INP_IPV4;
michael@0: 	inp6->inp_vflag |= INP_IPV6;
michael@0: #else
michael@0: 	inp->inp_vflag &= ~INP_IPV4;
michael@0: 	inp->inp_vflag |= INP_IPV6;
michael@0: #endif
michael@0: 	if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
michael@0: 		switch (addr->sa_family) {
michael@0: #ifdef INET
michael@0: 		case AF_INET:
michael@0: 			/* binding v4 addr to v6 socket, so reset flags */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
michael@0: 			inp6->inp_vflag |= INP_IPV4;
michael@0: 			inp6->inp_vflag &= ~INP_IPV6;
michael@0: #else
michael@0: 			inp->inp_vflag |= INP_IPV4;
michael@0: 			inp->inp_vflag &= ~INP_IPV6;
michael@0: #endif
michael@0: 			break;
michael@0: #endif
michael@0: #ifdef INET6
michael@0: 		case AF_INET6:
michael@0: 		{
michael@0: 			struct sockaddr_in6 *sin6_p;
michael@0: 
michael@0: 			sin6_p = (struct sockaddr_in6 *)addr;
michael@0: 
michael@0: 			if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
michael@0: 				inp6->inp_vflag |= INP_IPV4;
michael@0: #else
michael@0: 				inp->inp_vflag |= INP_IPV4;
michael@0: #endif
michael@0: 			}
michael@0: #ifdef INET
michael@0: 			if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
michael@0: 				struct sockaddr_in sin;
michael@0: 
michael@0: 				in6_sin6_2_sin(&sin, sin6_p);
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__)
michael@0: 				inp6->inp_vflag |= INP_IPV4;
michael@0: 				inp6->inp_vflag &= ~INP_IPV6;
michael@0: #else
michael@0: 				inp->inp_vflag |= INP_IPV4;
michael@0: 				inp->inp_vflag &= ~INP_IPV6;
michael@0: #endif
michael@0: 				error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
michael@0: 				return (error);
michael@0: 			}
michael@0: #endif
michael@0: 			break;
michael@0: 		}
michael@0: #endif
michael@0: 		default:
michael@0: 			break;
michael@0: 		}
michael@0: 	} else if (addr != NULL) {
michael@0: 		struct sockaddr_in6 *sin6_p;
michael@0: 
michael@0: 		/* IPV6_V6ONLY socket */
michael@0: #ifdef INET
michael@0: 		if (addr->sa_family == AF_INET) {
michael@0: 			/* can't bind v4 addr to v6 only socket! */
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: #endif
michael@0: 		sin6_p = (struct sockaddr_in6 *)addr;
michael@0: 
michael@0: 		if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
michael@0: 			/* can't bind v4-mapped addrs either! */
michael@0: 			/* NOTE: we don't support SIIT */
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 	}
michael@0: 	error = sctp_inpcb_bind(so, addr, NULL, p);
michael@0: 	return (error);
michael@0: }
michael@0: 
michael@0: 
michael@0: #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) || defined(__Userspace__)
michael@0: #if !defined(__Userspace__)
michael@0: static void
michael@0: #else
michael@0: void
michael@0: #endif
michael@0: sctp6_close(struct socket *so)
michael@0: {
michael@0: 	sctp_close(so);
michael@0: }
michael@0: 
michael@0: /* This could be made common with sctp_detach() since they are identical */
michael@0: #else
michael@0: 
michael@0: #if !defined(__Panda__)
michael@0: static
michael@0: #endif
michael@0: int
michael@0: sctp6_detach(struct socket *so)
michael@0: {
michael@0: #if defined(__Userspace__)
michael@0: 	sctp_close(so);
michael@0: 	return (0);
michael@0: #else
michael@0: 	return (sctp_detach(so));
michael@0: #endif
michael@0: }
michael@0: 
michael@0: #endif
michael@0: 
michael@0: #if !defined(__Panda__) && !defined(__Userspace__)
michael@0: static
michael@0: #endif
michael@0: int
michael@0: sctp6_disconnect(struct socket *so)
michael@0: {
michael@0: 	return (sctp_disconnect(so));
michael@0: }
michael@0: 
michael@0: 
michael@0: int
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
michael@0:     struct mbuf *control, struct thread *p);
michael@0: 
michael@0: #else
michael@0: sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
michael@0:     struct mbuf *control, struct proc *p);
michael@0: 
michael@0: #endif
michael@0: 
michael@0: #if !defined(__Panda__) && !defined(__Windows__) && !defined(__Userspace__)
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: static int
michael@0: sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
michael@0:     struct mbuf *control, struct thread *p)
michael@0: {
michael@0: #elif defined(__FreeBSD__) || defined(__APPLE__)
michael@0: static int
michael@0: sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
michael@0:     struct mbuf *control, struct proc *p)
michael@0: {
michael@0: #else
michael@0: static int
michael@0: sctp6_send(struct socket *so, int flags, struct mbuf *m, struct mbuf *nam,
michael@0:     struct mbuf *control, struct proc *p)
michael@0: {
michael@0: 	struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL;
michael@0: #endif
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	struct in6pcb *inp6;
michael@0: 
michael@0: #ifdef INET
michael@0: 	struct sockaddr_in6 *sin6;
michael@0: #endif /* INET */
michael@0: 	/* No SPL needed since sctp_output does this */
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp == NULL) {
michael@0: 		if (control) {
michael@0: 			SCTP_RELEASE_PKT(control);
michael@0: 			control = NULL;
michael@0: 		}
michael@0: 		SCTP_RELEASE_PKT(m);
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 	inp6 = (struct in6pcb *)inp;
michael@0: 	/*
michael@0: 	 * For the TCP model we may get a NULL addr, if we are a connected
michael@0: 	 * socket thats ok.
michael@0: 	 */
michael@0: 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
michael@0: 	    (addr == NULL)) {
michael@0: 		goto connected_type;
michael@0: 	}
michael@0: 	if (addr == NULL) {
michael@0: 		SCTP_RELEASE_PKT(m);
michael@0: 		if (control) {
michael@0: 			SCTP_RELEASE_PKT(control);
michael@0: 			control = NULL;
michael@0: 		}
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
michael@0: 		return (EDESTADDRREQ);
michael@0: 	}
michael@0: #ifdef INET
michael@0: 	sin6 = (struct sockaddr_in6 *)addr;
michael@0: 	if (SCTP_IPV6_V6ONLY(inp6)) {
michael@0: 		/*
michael@0: 		 * if IPV6_V6ONLY flag, we discard datagrams destined to a
michael@0: 		 * v4 addr or v4-mapped addr
michael@0: 		 */
michael@0: 		if (addr->sa_family == AF_INET) {
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 	}
michael@0: 	if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
michael@0: 		struct sockaddr_in sin;
michael@0: 
michael@0: 		/* convert v4-mapped into v4 addr and send */
michael@0: 		in6_sin6_2_sin(&sin, sin6);
michael@0: 		return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p));
michael@0: 	}
michael@0: #endif				/* INET */
michael@0: connected_type:
michael@0: 	/* now what about control */
michael@0: 	if (control) {
michael@0: 		if (inp->control) {
michael@0: 			SCTP_PRINTF("huh? control set?\n");
michael@0: 			SCTP_RELEASE_PKT(inp->control);
michael@0: 			inp->control = NULL;
michael@0: 		}
michael@0: 		inp->control = control;
michael@0: 	}
michael@0: 	/* Place the data */
michael@0: 	if (inp->pkt) {
michael@0: 		SCTP_BUF_NEXT(inp->pkt_last) = m;
michael@0: 		inp->pkt_last = m;
michael@0: 	} else {
michael@0: 		inp->pkt_last = inp->pkt = m;
michael@0: 	}
michael@0: 	if (
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__)
michael@0: 	/* FreeBSD and MacOSX uses a flag passed */
michael@0: 	    ((flags & PRUS_MORETOCOME) == 0)
michael@0: #else
michael@0: 	    1			/* Open BSD does not have any "more to come"
michael@0: 				 * indication */
michael@0: #endif
michael@0: 	    ) {
michael@0: 		/*
michael@0: 		 * note with the current version this code will only be used
michael@0: 		 * by OpenBSD, NetBSD and FreeBSD have methods for
michael@0: 		 * re-defining sosend() to use sctp_sosend().  One can
michael@0: 		 * optionaly switch back to this code (by changing back the
michael@0: 		 * defininitions but this is not advisable.
michael@0: 		 */
michael@0: 		int ret;
michael@0: 
michael@0: 		ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
michael@0: 		inp->pkt = NULL;
michael@0: 		inp->control = NULL;
michael@0: 		return (ret);
michael@0: 	} else {
michael@0: 		return (0);
michael@0: 	}
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
michael@0: static int
michael@0: sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
michael@0: {
michael@0: #elif defined(__FreeBSD__) || defined(__APPLE__)
michael@0: static int
michael@0: sctp6_connect(struct socket *so, struct sockaddr *addr, struct proc *p)
michael@0: {
michael@0: #elif defined(__Panda__)
michael@0: int
michael@0: sctp6_connect(struct socket *so, struct sockaddr *addr, void *p)
michael@0: {
michael@0: #elif defined(__Windows__)
michael@0: static int
michael@0: sctp6_connect(struct socket *so, struct sockaddr *addr, PKTHREAD p)
michael@0: {
michael@0: #elif defined(__Userspace__)
michael@0: int
michael@0: sctp6_connect(struct socket *so, struct sockaddr *addr)
michael@0: {
michael@0: 	void *p = NULL;
michael@0: #else
michael@0: static int
michael@0: sctp6_connect(struct socket *so, struct mbuf *nam, struct proc *p)
michael@0: {
michael@0: 	struct sockaddr *addr = mtod(nam, struct sockaddr *);
michael@0: #endif
michael@0: 	uint32_t vrf_id;
michael@0: 	int error = 0;
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	struct sctp_tcb *stcb;
michael@0: #ifdef INET
michael@0: 	struct in6pcb *inp6;
michael@0: 	struct sockaddr_in6 *sin6;
michael@0: 	struct sockaddr_storage ss;
michael@0: #endif
michael@0: 
michael@0: #ifdef INET
michael@0: 	inp6 = (struct in6pcb *)so->so_pcb;
michael@0: #endif
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
michael@0: 		return (ECONNRESET);	/* I made the same as TCP since we are
michael@0: 					 * not setup? */
michael@0: 	}
michael@0: 	if (addr == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: #if !defined(__Windows__)
michael@0: 	switch (addr->sa_family) {
michael@0: #ifdef INET
michael@0: 	case AF_INET:
michael@0: #ifdef HAVE_SA_LEN
michael@0: 		if (addr->sa_len != sizeof(struct sockaddr_in)) {
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: #endif
michael@0: 		break;
michael@0: #endif
michael@0: #ifdef INET6
michael@0: 	case AF_INET6:
michael@0: #ifdef HAVE_SA_LEN
michael@0: 		if (addr->sa_len != sizeof(struct sockaddr_in6)) {
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: #endif
michael@0: 		break;
michael@0: #endif
michael@0: 	default:
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: #endif
michael@0: 
michael@0: 	vrf_id = inp->def_vrf_id;
michael@0: 	SCTP_ASOC_CREATE_LOCK(inp);
michael@0: 	SCTP_INP_RLOCK(inp);
michael@0: 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
michael@0: 	    SCTP_PCB_FLAGS_UNBOUND) {
michael@0: 		/* Bind a ephemeral port */
michael@0: 		SCTP_INP_RUNLOCK(inp);
michael@0: 		error = sctp6_bind(so, NULL, p);
michael@0: 		if (error) {
michael@0: 			SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 
michael@0: 			return (error);
michael@0: 		}
michael@0: 		SCTP_INP_RLOCK(inp);
michael@0: 	}
michael@0: 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
michael@0: 	    (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
michael@0: 		/* We are already connected AND the TCP model */
michael@0: 		SCTP_INP_RUNLOCK(inp);
michael@0: 		SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
michael@0: 		return (EADDRINUSE);
michael@0: 	}
michael@0: #ifdef INET
michael@0: 	sin6 = (struct sockaddr_in6 *)addr;
michael@0: 	if (SCTP_IPV6_V6ONLY(inp6)) {
michael@0: 		/*
michael@0: 		 * if IPV6_V6ONLY flag, ignore connections destined to a v4
michael@0: 		 * addr or v4-mapped addr
michael@0: 		 */
michael@0: 		if (addr->sa_family == AF_INET) {
michael@0: 			SCTP_INP_RUNLOCK(inp);
michael@0: 			SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
michael@0: 			SCTP_INP_RUNLOCK(inp);
michael@0: 			SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 	}
michael@0: 	if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
michael@0: 		/* convert v4-mapped into v4 addr */
michael@0: 		in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6);
michael@0: 		addr = (struct sockaddr *)&ss;
michael@0: 	}
michael@0: #endif				/* INET */
michael@0: 	/* Now do we connect? */
michael@0: 	if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
michael@0: 		stcb = LIST_FIRST(&inp->sctp_asoc_list);
michael@0: 		if (stcb) {
michael@0: 			SCTP_TCB_UNLOCK(stcb);
michael@0: 		}
michael@0: 		SCTP_INP_RUNLOCK(inp);
michael@0: 	} else {
michael@0: 		SCTP_INP_RUNLOCK(inp);
michael@0: 		SCTP_INP_WLOCK(inp);
michael@0: 		SCTP_INP_INCR_REF(inp);
michael@0: 		SCTP_INP_WUNLOCK(inp);
michael@0: 		stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
michael@0: 		if (stcb == NULL) {
michael@0: 			SCTP_INP_WLOCK(inp);
michael@0: 			SCTP_INP_DECR_REF(inp);
michael@0: 			SCTP_INP_WUNLOCK(inp);
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	if (stcb != NULL) {
michael@0: 		/* Already have or am bring up an association */
michael@0: 		SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 		SCTP_TCB_UNLOCK(stcb);
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
michael@0: 		return (EALREADY);
michael@0: 	}
michael@0: 	/* We are GOOD to go */
michael@0: 	stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
michael@0: 	SCTP_ASOC_CREATE_UNLOCK(inp);
michael@0: 	if (stcb == NULL) {
michael@0: 		/* Gak! no memory */
michael@0: 		return (error);
michael@0: 	}
michael@0: 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
michael@0: 		stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
michael@0: 		/* Set the connected flag so we can queue data */
michael@0: 		soisconnecting(so);
michael@0: 	}
michael@0: 	stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
michael@0: 	(void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
michael@0: 
michael@0: 	/* initialize authentication parameters for the assoc */
michael@0: 	sctp_initialize_auth_params(inp, stcb);
michael@0: 
michael@0: 	sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
michael@0: 	SCTP_TCB_UNLOCK(stcb);
michael@0: 	return (error);
michael@0: }
michael@0: 
michael@0: static int
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: sctp6_getaddr(struct socket *so, struct sockaddr **addr)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6;
michael@0: #elif defined(__Panda__)
michael@0: sctp6_getaddr(struct socket *so, struct sockaddr *addr)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
michael@0: #else
michael@0: sctp6_getaddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
michael@0: #endif
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	uint32_t vrf_id;
michael@0: 	struct sctp_ifa *sctp_ifa;
michael@0: 
michael@0: #ifdef SCTP_KAME
michael@0: 	int error;
michael@0: #endif /* SCTP_KAME */
michael@0: 
michael@0: 	/*
michael@0: 	 * Do the malloc first in case it blocks.
michael@0: 	 */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 	SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6));
michael@0: 	if (sin6 == NULL)
michael@0: 		return (ENOMEM);
michael@0: #elif defined(__Panda__)
michael@0: 	bzero(sin6, sizeof(*sin6));
michael@0: #else
michael@0: 	SCTP_BUF_LEN(nam) = sizeof(*sin6);
michael@0: 	bzero(sin6, sizeof(*sin6));
michael@0: #endif
michael@0: 	sin6->sin6_family = AF_INET6;
michael@0: #ifdef HAVE_SIN6_LEN
michael@0: 	sin6->sin6_len = sizeof(*sin6);
michael@0: #endif
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if (inp == NULL) {
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		SCTP_FREE_SONAME(sin6);
michael@0: #endif
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
michael@0: 		return (ECONNRESET);
michael@0: 	}
michael@0: 	SCTP_INP_RLOCK(inp);
michael@0: 	sin6->sin6_port = inp->sctp_lport;
michael@0: 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
michael@0: 		/* For the bound all case you get back 0 */
michael@0: 		if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
michael@0: 			struct sctp_tcb *stcb;
michael@0: 			struct sockaddr_in6 *sin_a6;
michael@0: 			struct sctp_nets *net;
michael@0: 			int fnd;
michael@0: 			stcb = LIST_FIRST(&inp->sctp_asoc_list);
michael@0: 			if (stcb == NULL) {
michael@0: 				goto notConn6;
michael@0: 			}
michael@0: 			fnd = 0;
michael@0: 			sin_a6 = NULL;
michael@0: 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
michael@0: 				sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
michael@0: 				if (sin_a6 == NULL)
michael@0: 					/* this will make coverity happy */
michael@0: 					continue;
michael@0: 
michael@0: 				if (sin_a6->sin6_family == AF_INET6) {
michael@0: 					fnd = 1;
michael@0: 					break;
michael@0: 				}
michael@0: 			}
michael@0: 			if ((!fnd) || (sin_a6 == NULL)) {
michael@0: 				/* punt */
michael@0: 				goto notConn6;
michael@0: 			}
michael@0: 			vrf_id = inp->def_vrf_id;
michael@0: 			sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id);
michael@0: 			if (sctp_ifa) {
michael@0: 				sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
michael@0: 			}
michael@0: 		} else {
michael@0: 			/* For the bound all case you get back 0 */
michael@0: 	notConn6:
michael@0: 			memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
michael@0: 		}
michael@0: 	} else {
michael@0: 		/* Take the first IPv6 address in the list */
michael@0: 		struct sctp_laddr *laddr;
michael@0: 		int fnd = 0;
michael@0: 
michael@0: 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
michael@0: 			if (laddr->ifa->address.sa.sa_family == AF_INET6) {
michael@0: 				struct sockaddr_in6 *sin_a;
michael@0: 
michael@0: 				sin_a = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
michael@0: 				sin6->sin6_addr = sin_a->sin6_addr;
michael@0: 				fnd = 1;
michael@0: 				break;
michael@0: 			}
michael@0: 		}
michael@0: 		if (!fnd) {
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 			SCTP_FREE_SONAME(sin6);
michael@0: #endif
michael@0: 			SCTP_INP_RUNLOCK(inp);
michael@0: 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
michael@0: 			return (ENOENT);
michael@0: 		}
michael@0: 	}
michael@0: 	SCTP_INP_RUNLOCK(inp);
michael@0: 	/* Scoping things for v6 */
michael@0: #ifdef SCTP_EMBEDDED_V6_SCOPE
michael@0: #ifdef SCTP_KAME
michael@0: 	if ((error = sa6_recoverscope(sin6)) != 0) {
michael@0: 		SCTP_FREE_SONAME(sin6);
michael@0: 		return (error);
michael@0: 	}
michael@0: #else
michael@0: 	if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
michael@0: 		/* skip ifp check below */
michael@0: 		in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
michael@0: 	else
michael@0: 		sin6->sin6_scope_id = 0;	/* XXX */
michael@0: #endif /* SCTP_KAME */
michael@0: #endif /* SCTP_EMBEDDED_V6_SCOPE */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 	(*addr) = (struct sockaddr *)sin6;
michael@0: #endif
michael@0: 	return (0);
michael@0: }
michael@0: 
michael@0: static int
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6;
michael@0: #elif defined(__Panda__)
michael@0: sctp6_peeraddr(struct socket *so, struct sockaddr *addr)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
michael@0: #else
michael@0: sctp6_peeraddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: 	struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
michael@0: #endif
michael@0: 	int fnd;
michael@0: 	struct sockaddr_in6 *sin_a6;
michael@0: 	struct sctp_inpcb *inp;
michael@0: 	struct sctp_tcb *stcb;
michael@0: 	struct sctp_nets *net;
michael@0: #ifdef SCTP_KAME
michael@0: 	int error;
michael@0: #endif
michael@0: 
michael@0: 	/* Do the malloc first in case it blocks. */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 	SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
michael@0: 	if (sin6 == NULL)
michael@0: 		return (ENOMEM);
michael@0: #elif defined(__Panda__)
michael@0: 	memset(sin6, 0, sizeof(*sin6));
michael@0: #else
michael@0: 	SCTP_BUF_LEN(nam) = sizeof(*sin6);
michael@0: 	memset(sin6, 0, sizeof(*sin6));
michael@0: #endif
michael@0: 	sin6->sin6_family = AF_INET6;
michael@0: #ifdef HAVE_SIN6_LEN
michael@0: 	sin6->sin6_len = sizeof(*sin6);
michael@0: #endif
michael@0: 
michael@0: 	inp = (struct sctp_inpcb *)so->so_pcb;
michael@0: 	if ((inp == NULL) ||
michael@0: 	    ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
michael@0: 		/* UDP type and listeners will drop out here */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		SCTP_FREE_SONAME(sin6);
michael@0: #endif
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
michael@0: 		return (ENOTCONN);
michael@0: 	}
michael@0: 	SCTP_INP_RLOCK(inp);
michael@0: 	stcb = LIST_FIRST(&inp->sctp_asoc_list);
michael@0: 	if (stcb) {
michael@0: 		SCTP_TCB_LOCK(stcb);
michael@0: 	}
michael@0: 	SCTP_INP_RUNLOCK(inp);
michael@0: 	if (stcb == NULL) {
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		SCTP_FREE_SONAME(sin6);
michael@0: #endif
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
michael@0: 		return (ECONNRESET);
michael@0: 	}
michael@0: 	fnd = 0;
michael@0: 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
michael@0: 		sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
michael@0: 		if (sin_a6->sin6_family == AF_INET6) {
michael@0: 			fnd = 1;
michael@0: 			sin6->sin6_port = stcb->rport;
michael@0: 			sin6->sin6_addr = sin_a6->sin6_addr;
michael@0: 			break;
michael@0: 		}
michael@0: 	}
michael@0: 	SCTP_TCB_UNLOCK(stcb);
michael@0: 	if (!fnd) {
michael@0: 		/* No IPv4 address */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		SCTP_FREE_SONAME(sin6);
michael@0: #endif
michael@0: 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
michael@0: 		return (ENOENT);
michael@0: 	}
michael@0: #ifdef SCTP_EMBEDDED_V6_SCOPE
michael@0: #ifdef SCTP_KAME
michael@0: 	if ((error = sa6_recoverscope(sin6)) != 0)
michael@0: 		return (error);
michael@0: #else
michael@0: 	in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
michael@0: #endif /* SCTP_KAME */
michael@0: #endif /* SCTP_EMBEDDED_V6_SCOPE */
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 	*addr = (struct sockaddr *)sin6;
michael@0: #endif
michael@0: 	return (0);
michael@0: }
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: static int
michael@0: sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr;
michael@0: #endif
michael@0: #elif defined(__Panda__)
michael@0: int
michael@0: sctp6_in6getaddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
michael@0: {
michael@0: 	struct sockaddr *addr = nam;
michael@0: #elif defined(__Userspace__)
michael@0: int
michael@0: sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr = mtod(nam, struct sockaddr *);
michael@0: #endif
michael@0: #else
michael@0: static int
michael@0: sctp6_in6getaddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr = mtod(nam, struct sockaddr *);
michael@0: #endif
michael@0: #endif
michael@0: 	struct in6pcb *inp6 = sotoin6pcb(so);
michael@0: 	int error;
michael@0: 
michael@0: 	if (inp6 == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 
michael@0: 	/* allow v6 addresses precedence */
michael@0: 	error = sctp6_getaddr(so, nam);
michael@0: #ifdef INET
michael@0: 	if (error) {
michael@0: 		/* try v4 next if v6 failed */
michael@0: 		error = sctp_ingetaddr(so, nam);
michael@0: 		if (error) {
michael@0: 			return (error);
michael@0: 		}
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		addr = *nam;
michael@0: #endif
michael@0: 		/* if I'm V6ONLY, convert it to v4-mapped */
michael@0: 		if (SCTP_IPV6_V6ONLY(inp6)) {
michael@0: 			struct sockaddr_in6 sin6;
michael@0: 
michael@0: 			in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
michael@0: 			memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
michael@0: 		}
michael@0: 	}
michael@0: #endif
michael@0: #if defined(__Panda__)
michael@0: 	*namelen = nam->sa_len;
michael@0: #endif
michael@0: 	return (error);
michael@0: }
michael@0: 
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: static int
michael@0: sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr;
michael@0: #endif
michael@0: #elif defined(__Panda__)
michael@0: int
michael@0: sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen)
michael@0: {
michael@0: 	struct sockaddr *addr = (struct sockaddr *)nam;
michael@0: #elif defined(__Userspace__)
michael@0: int
michael@0: sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr = mtod(nam, struct sockaddr *);
michael@0: #endif
michael@0: #else
michael@0: static
michael@0: int
michael@0: sctp6_getpeeraddr(struct socket *so, struct mbuf *nam)
michael@0: {
michael@0: #ifdef INET
michael@0: 	struct sockaddr *addr = mtod(nam, struct sockaddr *);
michael@0: #endif
michael@0: 
michael@0: #endif
michael@0: 	struct in6pcb *inp6 = sotoin6pcb(so);
michael@0: 	int error;
michael@0: 
michael@0: 	if (inp6 == NULL) {
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 		return (EINVAL);
michael@0: 	}
michael@0: 
michael@0: 	/* allow v6 addresses precedence */
michael@0: 	error = sctp6_peeraddr(so, nam);
michael@0: #ifdef INET
michael@0: 	if (error) {
michael@0: 		/* try v4 next if v6 failed */
michael@0: 		error = sctp_peeraddr(so, nam);
michael@0: 		if (error) {
michael@0: 			return (error);
michael@0: 		}
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: 		addr = *nam;
michael@0: #endif
michael@0: 		/* if I'm V6ONLY, convert it to v4-mapped */
michael@0: 		if (SCTP_IPV6_V6ONLY(inp6)) {
michael@0: 			struct sockaddr_in6 sin6;
michael@0: 
michael@0: 			in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
michael@0: 			memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
michael@0: 		}
michael@0: 	}
michael@0: #endif
michael@0: #if defined(__Panda__)
michael@0: 	*namelen = nam->sa_len;
michael@0: #endif
michael@0: 	return (error);
michael@0: }
michael@0: 
michael@0: #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__)
michael@0: struct pr_usrreqs sctp6_usrreqs = {
michael@0: #if defined(__FreeBSD__)
michael@0: 	.pru_abort = sctp6_abort,
michael@0: 	.pru_accept = sctp_accept,
michael@0: 	.pru_attach = sctp6_attach,
michael@0: 	.pru_bind = sctp6_bind,
michael@0: 	.pru_connect = sctp6_connect,
michael@0: 	.pru_control = in6_control,
michael@0: #if __FreeBSD_version >= 690000
michael@0: 	.pru_close = sctp6_close,
michael@0: 	.pru_detach = sctp6_close,
michael@0: 	.pru_sopoll = sopoll_generic,
michael@0: 	.pru_flush = sctp_flush,
michael@0: #else
michael@0: 	.pru_detach = sctp6_detach,
michael@0: 	.pru_sopoll = sopoll,
michael@0: #endif
michael@0: 	.pru_disconnect = sctp6_disconnect,
michael@0: 	.pru_listen = sctp_listen,
michael@0: 	.pru_peeraddr = sctp6_getpeeraddr,
michael@0: 	.pru_send = sctp6_send,
michael@0: 	.pru_shutdown = sctp_shutdown,
michael@0: 	.pru_sockaddr = sctp6_in6getaddr,
michael@0: 	.pru_sosend = sctp_sosend,
michael@0: 	.pru_soreceive = sctp_soreceive
michael@0: #elif defined(__APPLE__)
michael@0: 	.pru_abort = sctp6_abort,
michael@0: 	.pru_accept = sctp_accept,
michael@0: 	.pru_attach = sctp6_attach,
michael@0: 	.pru_bind = sctp6_bind,
michael@0: 	.pru_connect = sctp6_connect,
michael@0: 	.pru_connect2 = pru_connect2_notsupp,
michael@0: 	.pru_control = in6_control,
michael@0: 	.pru_detach = sctp6_detach,
michael@0: 	.pru_disconnect = sctp6_disconnect,
michael@0: 	.pru_listen = sctp_listen,
michael@0: 	.pru_peeraddr = sctp6_getpeeraddr,
michael@0: 	.pru_rcvd = NULL,
michael@0: 	.pru_rcvoob = pru_rcvoob_notsupp,
michael@0: 	.pru_send = sctp6_send,
michael@0: 	.pru_sense = pru_sense_null,
michael@0: 	.pru_shutdown = sctp_shutdown,
michael@0: 	.pru_sockaddr = sctp6_in6getaddr,
michael@0: 	.pru_sosend = sctp_sosend,
michael@0: 	.pru_soreceive = sctp_soreceive,
michael@0:  	.pru_sopoll = sopoll
michael@0: #elif defined(__Windows__)
michael@0: 	sctp6_abort,
michael@0: 	sctp_accept,
michael@0: 	sctp6_attach,
michael@0: 	sctp6_bind,
michael@0: 	sctp6_connect,
michael@0: 	pru_connect2_notsupp,
michael@0: 	NULL,
michael@0: 	NULL,
michael@0: 	sctp6_disconnect,
michael@0: 	sctp_listen,
michael@0: 	sctp6_getpeeraddr,
michael@0: 	NULL,
michael@0: 	pru_rcvoob_notsupp,
michael@0: 	NULL,
michael@0: 	pru_sense_null,
michael@0: 	sctp_shutdown,
michael@0: 	sctp_flush,
michael@0: 	sctp6_in6getaddr,
michael@0: 	sctp_sosend,
michael@0: 	sctp_soreceive,
michael@0: 	sopoll_generic,
michael@0: 	NULL,
michael@0: 	sctp6_close
michael@0: #endif
michael@0: };
michael@0: 
michael@0: #elif !defined(__Panda__) && !defined(__Userspace__)
michael@0: int
michael@0: sctp6_usrreq(so, req, m, nam, control, p)
michael@0: 	struct socket *so;
michael@0: 	int req;
michael@0: 	struct mbuf *m, *nam, *control;
michael@0: 	struct proc *p;
michael@0: {
michael@0: 	int s;
michael@0: 	int error = 0;
michael@0: 	int family;
michael@0: 	uint32_t vrf_id;
michael@0: 	family = so->so_proto->pr_domain->dom_family;
michael@0: 
michael@0: 	if (req == PRU_CONTROL) {
michael@0: 		switch (family) {
michael@0: 		case PF_INET:
michael@0: 			error = in_control(so, (long)m, (caddr_t)nam,
michael@0: 			    (struct ifnet *)control
michael@0: 			    );
michael@0: #ifdef INET6
michael@0: 		case PF_INET6:
michael@0: 			error = in6_control(so, (long)m, (caddr_t)nam,
michael@0: 			    (struct ifnet *)control, p);
michael@0: #endif
michael@0: 		default:
michael@0: 			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
michael@0: 			error = EAFNOSUPPORT;
michael@0: 		}
michael@0: 		return (error);
michael@0: 	}
michael@0: 	switch (req) {
michael@0: 	case PRU_ATTACH:
michael@0: 		error = sctp6_attach(so, family, p);
michael@0: 		break;
michael@0: 	case PRU_DETACH:
michael@0: 		error = sctp6_detach(so);
michael@0: 		break;
michael@0: 	case PRU_BIND:
michael@0: 		if (nam == NULL) {
michael@0: 			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 		error = sctp6_bind(so, nam, p);
michael@0: 		break;
michael@0: 	case PRU_LISTEN:
michael@0: 		error = sctp_listen(so, p);
michael@0: 		break;
michael@0: 	case PRU_CONNECT:
michael@0: 		if (nam == NULL) {
michael@0: 			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 		error = sctp6_connect(so, nam, p);
michael@0: 		break;
michael@0: 	case PRU_DISCONNECT:
michael@0: 		error = sctp6_disconnect(so);
michael@0: 		break;
michael@0: 	case PRU_ACCEPT:
michael@0: 		if (nam == NULL) {
michael@0: 			SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
michael@0: 			return (EINVAL);
michael@0: 		}
michael@0: 		error = sctp_accept(so, nam);
michael@0: 		break;
michael@0: 	case PRU_SHUTDOWN:
michael@0: 		error = sctp_shutdown(so);
michael@0: 		break;
michael@0: 
michael@0: 	case PRU_RCVD:
michael@0: 		/*
michael@0: 		 * For OpenBSD and NetBSD, this is real ugly. The (mbuf *)
michael@0: 		 * nam that is passed (by soreceive()) is the int flags cast
michael@0: 		 * as a (mbuf *) yuck!
michael@0: 		 */
michael@0: 		error = sctp_usr_recvd(so, (int)((long)nam));
michael@0: 		break;
michael@0: 
michael@0: 	case PRU_SEND:
michael@0: 		/* Flags are ignored */
michael@0: 		error = sctp6_send(so, 0, m, nam, control, p);
michael@0: 		break;
michael@0: 	case PRU_ABORT:
michael@0: 		error = sctp6_abort(so);
michael@0: 		break;
michael@0: 
michael@0: 	case PRU_SENSE:
michael@0: 		error = 0;
michael@0: 		break;
michael@0: 	case PRU_RCVOOB:
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
michael@0: 		error = EAFNOSUPPORT;
michael@0: 		break;
michael@0: 	case PRU_SENDOOB:
michael@0: 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT);
michael@0: 		error = EAFNOSUPPORT;
michael@0: 		break;
michael@0: 	case PRU_PEERADDR:
michael@0: 		error = sctp6_getpeeraddr(so, nam);
michael@0: 		break;
michael@0: 	case PRU_SOCKADDR:
michael@0: 		error = sctp6_in6getaddr(so, nam);
michael@0: 		break;
michael@0: 	case PRU_SLOWTIMO:
michael@0: 		error = 0;
michael@0: 		break;
michael@0: 	default:
michael@0: 		break;
michael@0: 	}
michael@0: 	return (error);
michael@0: }
michael@0: #endif
michael@0: #endif