Initial import

Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.

1 files changed, 1319 insertions, 0 deletions

diff --git a/rtems/freebsd/netinet6/sctp6_usrreq.c b/rtems/freebsd/netinet6/sctp6_usrreq.c
new file mode 100644
index 00000000..bfd24cb6
--- /dev/null
+++ b/rtems/freebsd/netinet6/sctp6_usrreq.c
@@ -0,0 +1,1319 @@
+#include <rtems/freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ *
+ * b) 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.
+ *
+ * c) Neither the name of Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+/*	$KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $	*/
+
+#include <rtems/freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/freebsd/netinet/sctp_os.h>
+#include <rtems/freebsd/sys/proc.h>
+#include <rtems/freebsd/netinet/sctp_pcb.h>
+#include <rtems/freebsd/netinet/sctp_header.h>
+#include <rtems/freebsd/netinet/sctp_var.h>
+#if defined(INET6)
+#include <rtems/freebsd/netinet6/sctp6_var.h>
+#endif
+#include <rtems/freebsd/netinet/sctp_sysctl.h>
+#include <rtems/freebsd/netinet/sctp_output.h>
+#include <rtems/freebsd/netinet/sctp_uio.h>
+#include <rtems/freebsd/netinet/sctp_asconf.h>
+#include <rtems/freebsd/netinet/sctputil.h>
+#include <rtems/freebsd/netinet/sctp_indata.h>
+#include <rtems/freebsd/netinet/sctp_timer.h>
+#include <rtems/freebsd/netinet/sctp_auth.h>
+#include <rtems/freebsd/netinet/sctp_input.h>
+#include <rtems/freebsd/netinet/sctp_output.h>
+#include <rtems/freebsd/netinet/sctp_bsd_addr.h>
+#include <rtems/freebsd/netinet/sctp_crc32.h>
+#include <rtems/freebsd/netinet/udp.h>
+
+#ifdef IPSEC
+#include <rtems/freebsd/netipsec/ipsec.h>
+#if defined(INET6)
+#include <rtems/freebsd/netipsec/ipsec6.h>
+#endif				/* INET6 */
+#endif				/* IPSEC */
+
+extern struct protosw inetsw[];
+
+int
+sctp6_input(struct mbuf **i_pak, int *offp, int proto)
+{
+	struct mbuf *m;
+	struct ip6_hdr *ip6;
+	struct sctphdr *sh;
+	struct sctp_inpcb *in6p = NULL;
+	struct sctp_nets *net;
+	int refcount_up = 0;
+	uint32_t vrf_id = 0;
+
+#ifdef IPSEC
+	struct inpcb *in6p_ip;
+
+#endif
+	struct sctp_chunkhdr *ch;
+	int length, offset, iphlen;
+	uint8_t ecn_bits;
+	struct sctp_tcb *stcb = NULL;
+	int pkt_len = 0;
+
+#if !defined(SCTP_WITH_NO_CSUM)
+	uint32_t check, calc_check;
+
+#endif
+	int off = *offp;
+	uint16_t port = 0;
+
+	/* get the VRF and table id's */
+	if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
+		SCTP_RELEASE_PKT(*i_pak);
+		return (-1);
+	}
+	m = SCTP_HEADER_TO_CHAIN(*i_pak);
+	pkt_len = SCTP_HEADER_LEN((*i_pak));
+
+#ifdef  SCTP_PACKET_LOGGING
+	sctp_packet_log(m, pkt_len);
+#endif
+	ip6 = mtod(m, struct ip6_hdr *);
+	/* Ensure that (sctphdr + sctp_chunkhdr) in a row. */
+	IP6_EXTHDR_GET(sh, struct sctphdr *, m, off,
+	    (int)(sizeof(*sh) + sizeof(*ch)));
+	if (sh == NULL) {
+		SCTP_STAT_INCR(sctps_hdrops);
+		return IPPROTO_DONE;
+	}
+	ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
+	iphlen = off;
+	offset = iphlen + sizeof(*sh) + sizeof(*ch);
+	SCTPDBG(SCTP_DEBUG_INPUT1,
+	    "sctp6_input() length:%d iphlen:%d\n", pkt_len, iphlen);
+
+
+#if defined(NFAITH) && NFAITH > 0
+
+	if (faithprefix_p != NULL && (*faithprefix_p) (&ip6->ip6_dst)) {
+		/* XXX send icmp6 host/port unreach? */
+		goto bad;
+	}
+#endif				/* NFAITH defined and > 0 */
+	SCTP_STAT_INCR(sctps_recvpackets);
+	SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
+	SCTPDBG(SCTP_DEBUG_INPUT1, "V6 input gets a packet iphlen:%d pktlen:%d\n",
+	    iphlen, pkt_len);
+	if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
+		/* No multi-cast support in SCTP */
+		goto bad;
+	}
+	/* destination port of 0 is illegal, based on RFC2960. */
+	if (sh->dest_port == 0)
+		goto bad;
+
+	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
+	    "sctp_input(): Packet of length %d received on %s with csum_flags 0x%x.\n",
+	    m->m_pkthdr.len,
+	    if_name(m->m_pkthdr.rcvif),
+	    m->m_pkthdr.csum_flags);
+#if defined(SCTP_WITH_NO_CSUM)
+	SCTP_STAT_INCR(sctps_recvnocrc);
+#else
+	if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
+		SCTP_STAT_INCR(sctps_recvhwcrc);
+		goto sctp_skip_csum;
+	}
+	check = sh->checksum;	/* save incoming checksum */
+	if ((check == 0) && (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback)) &&
+	    (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst))) {
+		SCTP_STAT_INCR(sctps_recvnocrc);
+		goto sctp_skip_csum;
+	}
+	sh->checksum = 0;	/* prepare for calc */
+	calc_check = sctp_calculate_cksum(m, iphlen);
+	SCTP_STAT_INCR(sctps_recvswcrc);
+	if (calc_check != check) {
+		SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x  m:%p phlen:%d\n",
+		    calc_check, check, m, iphlen);
+		stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
+		    sh, ch, &in6p, &net, vrf_id);
+		if ((net) && (port)) {
+			if (net->port == 0) {
+				sctp_pathmtu_adjustment(in6p, stcb, net, net->mtu - sizeof(struct udphdr));
+			}
+			net->port = port;
+		}
+		/* in6p's ref-count increased && stcb locked */
+		if ((in6p) && (stcb)) {
+			sctp_send_packet_dropped(stcb, net, m, iphlen, 1);
+			sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, SCTP_OUTPUT_FROM_INPUT_ERROR, SCTP_SO_NOT_LOCKED);
+		} else if ((in6p != NULL) && (stcb == NULL)) {
+			refcount_up = 1;
+		}
+		SCTP_STAT_INCR(sctps_badsum);
+		SCTP_STAT_INCR_COUNTER32(sctps_checksumerrors);
+		goto bad;
+	}
+	sh->checksum = calc_check;
+
+sctp_skip_csum:
+#endif
+	net = NULL;
+	/*
+	 * Locate pcb and tcb for datagram sctp_findassociation_addr() wants
+	 * IP/SCTP/first chunk header...
+	 */
+	stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch),
+	    sh, ch, &in6p, &net, vrf_id);
+	if ((net) && (port)) {
+		if (net->port == 0) {
+			sctp_pathmtu_adjustment(in6p, stcb, net, net->mtu - sizeof(struct udphdr));
+		}
+		net->port = port;
+	}
+	/* in6p's ref-count increased */
+	if (in6p == NULL) {
+		struct sctp_init_chunk *init_chk, chunk_buf;
+
+		SCTP_STAT_INCR(sctps_noport);
+		if (ch->chunk_type == SCTP_INITIATION) {
+			/*
+			 * we do a trick here to get the INIT tag, dig in
+			 * and get the tag from the INIT and put it in the
+			 * common header.
+			 */
+			init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
+			    iphlen + sizeof(*sh), sizeof(*init_chk),
+			    (uint8_t *) & chunk_buf);
+			if (init_chk)
+				sh->v_tag = init_chk->init.initiate_tag;
+			else
+				sh->v_tag = 0;
+		}
+		if (ch->chunk_type == SCTP_SHUTDOWN_ACK) {
+			sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id, port);
+			goto bad;
+		}
+		if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) {
+			goto bad;
+		}
+		if (ch->chunk_type != SCTP_ABORT_ASSOCIATION)
+			sctp_send_abort(m, iphlen, sh, 0, NULL, vrf_id, port);
+		goto bad;
+	} else if (stcb == NULL) {
+		refcount_up = 1;
+	}
+#ifdef IPSEC
+	/*
+	 * Check AH/ESP integrity.
+	 */
+	in6p_ip = (struct inpcb *)in6p;
+	if (in6p_ip && (ipsec6_in_reject(m, in6p_ip))) {
+/* XXX */
+		MODULE_GLOBAL(ipsec6stat).in_polvio++;
+		goto bad;
+	}
+#endif				/* IPSEC */
+
+	/*
+	 * CONTROL chunk processing
+	 */
+	offset -= sizeof(*ch);
+	ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
+
+	/* Length now holds the total packet length payload + iphlen */
+	length = ntohs(ip6->ip6_plen) + iphlen;
+
+	/* sa_ignore NO_NULL_CHK */
+	sctp_common_input_processing(&m, iphlen, offset, length, sh, ch,
+	    in6p, stcb, net, ecn_bits, vrf_id, port);
+	/* inp's ref-count reduced && stcb unlocked */
+	/* XXX this stuff below gets moved to appropriate parts later... */
+	if (m)
+		sctp_m_freem(m);
+	if ((in6p) && refcount_up) {
+		/* reduce ref-count */
+		SCTP_INP_WLOCK(in6p);
+		SCTP_INP_DECR_REF(in6p);
+		SCTP_INP_WUNLOCK(in6p);
+	}
+	return IPPROTO_DONE;
+
+bad:
+	if (stcb) {
+		SCTP_TCB_UNLOCK(stcb);
+	}
+	if ((in6p) && refcount_up) {
+		/* reduce ref-count */
+		SCTP_INP_WLOCK(in6p);
+		SCTP_INP_DECR_REF(in6p);
+		SCTP_INP_WUNLOCK(in6p);
+	}
+	if (m)
+		sctp_m_freem(m);
+	return IPPROTO_DONE;
+}
+
+
+static void
+sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6,
+    struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net)
+{
+	uint32_t nxtsz;
+
+	if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
+	    (icmp6 == NULL) || (sh == NULL)) {
+		goto out;
+	}
+	/* First do we even look at it? */
+	if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag))
+		goto out;
+
+	if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) {
+		/* not PACKET TO BIG */
+		goto out;
+	}
+	/*
+	 * ok we need to look closely. We could even get smarter and look at
+	 * anyone that we sent to in case we get a different ICMP that tells
+	 * us there is no way to reach a host, but for this impl, all we
+	 * care about is MTU discovery.
+	 */
+	nxtsz = ntohl(icmp6->icmp6_mtu);
+	/* Stop any PMTU timer */
+	sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ + SCTP_LOC_1);
+
+	/* Adjust destination size limit */
+	if (net->mtu > nxtsz) {
+		net->mtu = nxtsz;
+		if (net->port) {
+			net->mtu -= sizeof(struct udphdr);
+		}
+	}
+	/* now what about the ep? */
+	if (stcb->asoc.smallest_mtu > nxtsz) {
+		struct sctp_tmit_chunk *chk;
+
+		/* Adjust that too */
+		stcb->asoc.smallest_mtu = nxtsz;
+		/* now off to subtract IP_DF flag if needed */
+
+		TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
+			if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
+				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
+			}
+		}
+		TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
+			if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) {
+				/*
+				 * For this guy we also mark for immediate
+				 * resend since we sent to big of chunk
+				 */
+				chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
+				if (chk->sent != SCTP_DATAGRAM_RESEND)
+					stcb->asoc.sent_queue_retran_cnt++;
+				chk->sent = SCTP_DATAGRAM_RESEND;
+				chk->rec.data.doing_fast_retransmit = 0;
+
+				chk->sent = SCTP_DATAGRAM_RESEND;
+				/* Clear any time so NO RTT is being done */
+				chk->sent_rcv_time.tv_sec = 0;
+				chk->sent_rcv_time.tv_usec = 0;
+				stcb->asoc.total_flight -= chk->send_size;
+				net->flight_size -= chk->send_size;
+			}
+		}
+	}
+	sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL);
+out:
+	if (stcb) {
+		SCTP_TCB_UNLOCK(stcb);
+	}
+}
+
+
+void
+sctp6_notify(struct sctp_inpcb *inp,
+    struct icmp6_hdr *icmph,
+    struct sctphdr *sh,
+    struct sockaddr *to,
+    struct sctp_tcb *stcb,
+    struct sctp_nets *net)
+{
+#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+	struct socket *so;
+
+#endif
+	/* protection */
+	int reason;
+
+
+	if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
+	    (sh == NULL) || (to == NULL)) {
+		if (stcb)
+			SCTP_TCB_UNLOCK(stcb);
+		return;
+	}
+	/* First job is to verify the vtag matches what I would send */
+	if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
+		SCTP_TCB_UNLOCK(stcb);
+		return;
+	}
+	if (icmph->icmp6_type != ICMP_UNREACH) {
+		/* We only care about unreachable */
+		SCTP_TCB_UNLOCK(stcb);
+		return;
+	}
+	if ((icmph->icmp6_code == ICMP_UNREACH_NET) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_HOST) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_NET_UNKNOWN) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_HOST_UNKNOWN) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_ISOLATED) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_NET_PROHIB) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_HOST_PROHIB) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_FILTER_PROHIB)) {
+
+		/*
+		 * Hmm reachablity problems we must examine closely. If its
+		 * not reachable, we may have lost a network. Or if there is
+		 * NO protocol at the other end named SCTP. well we consider
+		 * it a OOTB abort.
+		 */
+		if (net->dest_state & SCTP_ADDR_REACHABLE) {
+			/* Ok that destination is NOT reachable */
+			SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
+			    net->error_count,
+			    net->failure_threshold,
+			    net);
+
+			net->dest_state &= ~SCTP_ADDR_REACHABLE;
+			net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
+			/*
+			 * JRS 5/14/07 - If a destination is unreachable,
+			 * the PF bit is turned off.  This allows an
+			 * unambiguous use of the PF bit for destinations
+			 * that are reachable but potentially failed. If the
+			 * destination is set to the unreachable state, also
+			 * set the destination to the PF state.
+			 */
+			/*
+			 * Add debug message here if destination is not in
+			 * PF state.
+			 */
+			/* Stop any running T3 timers here? */
+			if ((stcb->asoc.sctp_cmt_on_off == 1) &&
+			    (stcb->asoc.sctp_cmt_pf > 0)) {
+				net->dest_state &= ~SCTP_ADDR_PF;
+				SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
+				    net);
+			}
+			net->error_count = net->failure_threshold + 1;
+			sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
+			    stcb, SCTP_FAILED_THRESHOLD,
+			    (void *)net, SCTP_SO_NOT_LOCKED);
+		}
+		SCTP_TCB_UNLOCK(stcb);
+	} else if ((icmph->icmp6_code == ICMP_UNREACH_PROTOCOL) ||
+	    (icmph->icmp6_code == ICMP_UNREACH_PORT)) {
+		/*
+		 * Here the peer is either playing tricks on us, including
+		 * an address that belongs to someone who does not support
+		 * SCTP OR was a userland implementation that shutdown and
+		 * now is dead. In either case treat it like a OOTB abort
+		 * with no TCB
+		 */
+		reason = SCTP_PEER_FAULTY;
+		sctp_abort_notification(stcb, reason, SCTP_SO_NOT_LOCKED);
+#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+		so = SCTP_INP_SO(inp);
+		atomic_add_int(&stcb->asoc.refcnt, 1);
+		SCTP_TCB_UNLOCK(stcb);
+		SCTP_SOCKET_LOCK(so, 1);
+		SCTP_TCB_LOCK(stcb);
+		atomic_subtract_int(&stcb->asoc.refcnt, 1);
+#endif
+		(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
+#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+		SCTP_SOCKET_UNLOCK(so, 1);
+		/* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */
+#endif
+		/* no need to unlock here, since the TCB is gone */
+	} else {
+		SCTP_TCB_UNLOCK(stcb);
+	}
+}
+
+
+
+void
+sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
+{
+	struct sctphdr sh;
+	struct ip6ctlparam *ip6cp = NULL;
+	uint32_t vrf_id;
+
+	vrf_id = SCTP_DEFAULT_VRFID;
+
+	if (pktdst->sa_family != AF_INET6 ||
+	    pktdst->sa_len != sizeof(struct sockaddr_in6))
+		return;
+
+	if ((unsigned)cmd >= PRC_NCMDS)
+		return;
+	if (PRC_IS_REDIRECT(cmd)) {
+		d = NULL;
+	} else if (inet6ctlerrmap[cmd] == 0) {
+		return;
+	}
+	/* if the parameter is from icmp6, decode it. */
+	if (d != NULL) {
+		ip6cp = (struct ip6ctlparam *)d;
+	} else {
+		ip6cp = (struct ip6ctlparam *)NULL;
+	}
+
+	if (ip6cp) {
+		/*
+		 * XXX: We assume that when IPV6 is non NULL, M and OFF are
+		 * valid.
+		 */
+		/* check if we can safely examine src and dst ports */
+		struct sctp_inpcb *inp = NULL;
+		struct sctp_tcb *stcb = NULL;
+		struct sctp_nets *net = NULL;
+		struct sockaddr_in6 final;
+
+		if (ip6cp->ip6c_m == NULL)
+			return;
+
+		bzero(&sh, sizeof(sh));
+		bzero(&final, sizeof(final));
+		inp = NULL;
+		net = NULL;
+		m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh),
+		    (caddr_t)&sh);
+		ip6cp->ip6c_src->sin6_port = sh.src_port;
+		final.sin6_len = sizeof(final);
+		final.sin6_family = AF_INET6;
+		final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr;
+		final.sin6_port = sh.dest_port;
+		stcb = sctp_findassociation_addr_sa((struct sockaddr *)ip6cp->ip6c_src,
+		    (struct sockaddr *)&final,
+		    &inp, &net, 1, vrf_id);
+		/* inp's ref-count increased && stcb locked */
+		if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
+			if (cmd == PRC_MSGSIZE) {
+				sctp6_notify_mbuf(inp,
+				    ip6cp->ip6c_icmp6,
+				    &sh,
+				    stcb,
+				    net);
+				/* inp's ref-count reduced && stcb unlocked */
+			} else {
+				sctp6_notify(inp, ip6cp->ip6c_icmp6, &sh,
+				    (struct sockaddr *)&final,
+				    stcb, net);
+				/* inp's ref-count reduced && stcb unlocked */
+			}
+		} else {
+			if (PRC_IS_REDIRECT(cmd) && inp) {
+				in6_rtchange((struct in6pcb *)inp,
+				    inet6ctlerrmap[cmd]);
+			}
+			if (inp) {
+				/* reduce inp's ref-count */
+				SCTP_INP_WLOCK(inp);
+				SCTP_INP_DECR_REF(inp);
+				SCTP_INP_WUNLOCK(inp);
+			}
+			if (stcb)
+				SCTP_TCB_UNLOCK(stcb);
+		}
+	}
+}
+
+/*
+ * this routine can probably be collasped into the one in sctp_userreq.c
+ * since they do the same thing and now we lookup with a sockaddr
+ */
+static int
+sctp6_getcred(SYSCTL_HANDLER_ARGS)
+{
+	struct xucred xuc;
+	struct sockaddr_in6 addrs[2];
+	struct sctp_inpcb *inp;
+	struct sctp_nets *net;
+	struct sctp_tcb *stcb;
+	int error;
+	uint32_t vrf_id;
+
+	vrf_id = SCTP_DEFAULT_VRFID;
+
+	error = priv_check(req->td, PRIV_NETINET_GETCRED);
+	if (error)
+		return (error);
+
+	if (req->newlen != sizeof(addrs)) {
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return (EINVAL);
+	}
+	if (req->oldlen != sizeof(struct ucred)) {
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return (EINVAL);
+	}
+	error = SYSCTL_IN(req, addrs, sizeof(addrs));
+	if (error)
+		return (error);
+
+	stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]),
+	    sin6tosa(&addrs[1]),
+	    &inp, &net, 1, vrf_id);
+	if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
+		if ((inp != NULL) && (stcb == NULL)) {
+			/* reduce ref-count */
+			SCTP_INP_WLOCK(inp);
+			SCTP_INP_DECR_REF(inp);
+			goto cred_can_cont;
+		}
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
+		error = ENOENT;
+		goto out;
+	}
+	SCTP_TCB_UNLOCK(stcb);
+	/*
+	 * We use the write lock here, only since in the error leg we need
+	 * it. If we used RLOCK, then we would have to
+	 * wlock/decr/unlock/rlock. Which in theory could create a hole.
+	 * Better to use higher wlock.
+	 */
+	SCTP_INP_WLOCK(inp);
+cred_can_cont:
+	error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
+	if (error) {
+		SCTP_INP_WUNLOCK(inp);
+		goto out;
+	}
+	cru2x(inp->sctp_socket->so_cred, &xuc);
+	SCTP_INP_WUNLOCK(inp);
+	error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
+out:
+	return (error);
+}
+
+SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
+    0, 0,
+    sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
+
+
+/* This is the same as the sctp_abort() could be made common */
+static void
+sctp6_abort(struct socket *so)
+{
+	struct sctp_inpcb *inp;
+	uint32_t flags;
+
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == 0) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return;
+	}
+sctp_must_try_again:
+	flags = inp->sctp_flags;
+#ifdef SCTP_LOG_CLOSING
+	sctp_log_closing(inp, NULL, 17);
+#endif
+	if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
+	    (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
+#ifdef SCTP_LOG_CLOSING
+		sctp_log_closing(inp, NULL, 16);
+#endif
+		sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
+		    SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
+		SOCK_LOCK(so);
+		SCTP_SB_CLEAR(so->so_snd);
+		/*
+		 * same for the rcv ones, they are only here for the
+		 * accounting/select.
+		 */
+		SCTP_SB_CLEAR(so->so_rcv);
+		/* Now null out the reference, we are completely detached. */
+		so->so_pcb = NULL;
+		SOCK_UNLOCK(so);
+	} else {
+		flags = inp->sctp_flags;
+		if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
+			goto sctp_must_try_again;
+		}
+	}
+	return;
+}
+
+static int
+sctp6_attach(struct socket *so, int proto, struct thread *p)
+{
+	struct in6pcb *inp6;
+	int error;
+	struct sctp_inpcb *inp;
+	uint32_t vrf_id = SCTP_DEFAULT_VRFID;
+
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp != NULL) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return EINVAL;
+	}
+	if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
+		error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
+		if (error)
+			return error;
+	}
+	error = sctp_inpcb_alloc(so, vrf_id);
+	if (error)
+		return error;
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	SCTP_INP_WLOCK(inp);
+	inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6;	/* I'm v6! */
+	inp6 = (struct in6pcb *)inp;
+
+	inp6->inp_vflag |= INP_IPV6;
+	inp6->in6p_hops = -1;	/* use kernel default */
+	inp6->in6p_cksum = -1;	/* just to be sure */
+#ifdef INET
+	/*
+	 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
+	 * socket as well, because the socket may be bound to an IPv6
+	 * wildcard address, which may match an IPv4-mapped IPv6 address.
+	 */
+	inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
+#endif
+	/*
+	 * Hmm what about the IPSEC stuff that is missing here but in
+	 * sctp_attach()?
+	 */
+	SCTP_INP_WUNLOCK(inp);
+	return 0;
+}
+
+static int
+sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
+{
+	struct sctp_inpcb *inp;
+	struct in6pcb *inp6;
+	int error;
+
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == 0) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return EINVAL;
+	}
+	if (addr) {
+		if ((addr->sa_family == AF_INET6) &&
+		    (addr->sa_len != sizeof(struct sockaddr_in6))) {
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+		if ((addr->sa_family == AF_INET) &&
+		    (addr->sa_len != sizeof(struct sockaddr_in))) {
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+	}
+	inp6 = (struct in6pcb *)inp;
+	inp6->inp_vflag &= ~INP_IPV4;
+	inp6->inp_vflag |= INP_IPV6;
+	if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
+		if (addr->sa_family == AF_INET) {
+			/* binding v4 addr to v6 socket, so reset flags */
+			inp6->inp_vflag |= INP_IPV4;
+			inp6->inp_vflag &= ~INP_IPV6;
+		} else {
+			struct sockaddr_in6 *sin6_p;
+
+			sin6_p = (struct sockaddr_in6 *)addr;
+
+			if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
+				inp6->inp_vflag |= INP_IPV4;
+			} else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
+				struct sockaddr_in sin;
+
+				in6_sin6_2_sin(&sin, sin6_p);
+				inp6->inp_vflag |= INP_IPV4;
+				inp6->inp_vflag &= ~INP_IPV6;
+				error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
+				return error;
+			}
+		}
+	} else if (addr != NULL) {
+		/* IPV6_V6ONLY socket */
+		if (addr->sa_family == AF_INET) {
+			/* can't bind v4 addr to v6 only socket! */
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		} else {
+			struct sockaddr_in6 *sin6_p;
+
+			sin6_p = (struct sockaddr_in6 *)addr;
+
+			if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
+				/* can't bind v4-mapped addrs either! */
+				/* NOTE: we don't support SIIT */
+				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+				return EINVAL;
+			}
+		}
+	}
+	error = sctp_inpcb_bind(so, addr, NULL, p);
+	return error;
+}
+
+
+static void
+sctp6_close(struct socket *so)
+{
+	sctp_close(so);
+}
+
+/* This could be made common with sctp_detach() since they are identical */
+
+static
+int
+sctp6_disconnect(struct socket *so)
+{
+	return (sctp_disconnect(so));
+}
+
+
+int
+sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
+    struct mbuf *control, struct thread *p);
+
+
+static int
+sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
+    struct mbuf *control, struct thread *p)
+{
+	struct sctp_inpcb *inp;
+	struct in6pcb *inp6;
+
+#ifdef INET
+	struct sockaddr_in6 *sin6;
+
+#endif				/* INET */
+	/* No SPL needed since sctp_output does this */
+
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == NULL) {
+		if (control) {
+			SCTP_RELEASE_PKT(control);
+			control = NULL;
+		}
+		SCTP_RELEASE_PKT(m);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return EINVAL;
+	}
+	inp6 = (struct in6pcb *)inp;
+	/*
+	 * For the TCP model we may get a NULL addr, if we are a connected
+	 * socket thats ok.
+	 */
+	if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
+	    (addr == NULL)) {
+		goto connected_type;
+	}
+	if (addr == NULL) {
+		SCTP_RELEASE_PKT(m);
+		if (control) {
+			SCTP_RELEASE_PKT(control);
+			control = NULL;
+		}
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
+		return (EDESTADDRREQ);
+	}
+#ifdef INET
+	sin6 = (struct sockaddr_in6 *)addr;
+	if (SCTP_IPV6_V6ONLY(inp6)) {
+		/*
+		 * if IPV6_V6ONLY flag, we discard datagrams destined to a
+		 * v4 addr or v4-mapped addr
+		 */
+		if (addr->sa_family == AF_INET) {
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+	}
+	if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+		if (!MODULE_GLOBAL(ip6_v6only)) {
+			struct sockaddr_in sin;
+
+			/* convert v4-mapped into v4 addr and send */
+			in6_sin6_2_sin(&sin, sin6);
+			return sctp_sendm(so, flags, m, (struct sockaddr *)&sin,
+			    control, p);
+		} else {
+			/* mapped addresses aren't enabled */
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+	}
+#endif				/* INET */
+connected_type:
+	/* now what about control */
+	if (control) {
+		if (inp->control) {
+			SCTP_PRINTF("huh? control set?\n");
+			SCTP_RELEASE_PKT(inp->control);
+			inp->control = NULL;
+		}
+		inp->control = control;
+	}
+	/* Place the data */
+	if (inp->pkt) {
+		SCTP_BUF_NEXT(inp->pkt_last) = m;
+		inp->pkt_last = m;
+	} else {
+		inp->pkt_last = inp->pkt = m;
+	}
+	if (
+	/* FreeBSD and MacOSX uses a flag passed */
+	    ((flags & PRUS_MORETOCOME) == 0)
+	    ) {
+		/*
+		 * note with the current version this code will only be used
+		 * by OpenBSD, NetBSD and FreeBSD have methods for
+		 * re-defining sosend() to use sctp_sosend().  One can
+		 * optionaly switch back to this code (by changing back the
+		 * defininitions but this is not advisable.
+		 */
+		int ret;
+
+		ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
+		inp->pkt = NULL;
+		inp->control = NULL;
+		return (ret);
+	} else {
+		return (0);
+	}
+}
+
+static int
+sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
+{
+	uint32_t vrf_id;
+	int error = 0;
+	struct sctp_inpcb *inp;
+	struct in6pcb *inp6;
+	struct sctp_tcb *stcb;
+
+#ifdef INET
+	struct sockaddr_in6 *sin6;
+	struct sockaddr_storage ss;
+
+#endif				/* INET */
+
+	inp6 = (struct in6pcb *)so->so_pcb;
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == 0) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
+		return (ECONNRESET);	/* I made the same as TCP since we are
+					 * not setup? */
+	}
+	if (addr == NULL) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return (EINVAL);
+	}
+	if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return (EINVAL);
+	}
+	if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return (EINVAL);
+	}
+	vrf_id = inp->def_vrf_id;
+	SCTP_ASOC_CREATE_LOCK(inp);
+	SCTP_INP_RLOCK(inp);
+	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
+	    SCTP_PCB_FLAGS_UNBOUND) {
+		/* Bind a ephemeral port */
+		SCTP_INP_RUNLOCK(inp);
+		error = sctp6_bind(so, NULL, p);
+		if (error) {
+			SCTP_ASOC_CREATE_UNLOCK(inp);
+
+			return (error);
+		}
+		SCTP_INP_RLOCK(inp);
+	}
+	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
+	    (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
+		/* We are already connected AND the TCP model */
+		SCTP_INP_RUNLOCK(inp);
+		SCTP_ASOC_CREATE_UNLOCK(inp);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
+		return (EADDRINUSE);
+	}
+#ifdef INET
+	sin6 = (struct sockaddr_in6 *)addr;
+	if (SCTP_IPV6_V6ONLY(inp6)) {
+		/*
+		 * if IPV6_V6ONLY flag, ignore connections destined to a v4
+		 * addr or v4-mapped addr
+		 */
+		if (addr->sa_family == AF_INET) {
+			SCTP_INP_RUNLOCK(inp);
+			SCTP_ASOC_CREATE_UNLOCK(inp);
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+			SCTP_INP_RUNLOCK(inp);
+			SCTP_ASOC_CREATE_UNLOCK(inp);
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+	}
+	if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+		if (!MODULE_GLOBAL(ip6_v6only)) {
+			/* convert v4-mapped into v4 addr */
+			in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6);
+			addr = (struct sockaddr *)&ss;
+		} else {
+			/* mapped addresses aren't enabled */
+			SCTP_INP_RUNLOCK(inp);
+			SCTP_ASOC_CREATE_UNLOCK(inp);
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+			return EINVAL;
+		}
+	} else
+#endif				/* INET */
+		addr = addr;	/* for true v6 address case */
+
+	/* Now do we connect? */
+	if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
+		stcb = LIST_FIRST(&inp->sctp_asoc_list);
+		if (stcb) {
+			SCTP_TCB_UNLOCK(stcb);
+		}
+		SCTP_INP_RUNLOCK(inp);
+	} else {
+		SCTP_INP_RUNLOCK(inp);
+		SCTP_INP_WLOCK(inp);
+		SCTP_INP_INCR_REF(inp);
+		SCTP_INP_WUNLOCK(inp);
+		stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
+		if (stcb == NULL) {
+			SCTP_INP_WLOCK(inp);
+			SCTP_INP_DECR_REF(inp);
+			SCTP_INP_WUNLOCK(inp);
+		}
+	}
+
+	if (stcb != NULL) {
+		/* Already have or am bring up an association */
+		SCTP_ASOC_CREATE_UNLOCK(inp);
+		SCTP_TCB_UNLOCK(stcb);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
+		return (EALREADY);
+	}
+	/* We are GOOD to go */
+	stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
+	SCTP_ASOC_CREATE_UNLOCK(inp);
+	if (stcb == NULL) {
+		/* Gak! no memory */
+		return (error);
+	}
+	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
+		stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
+		/* Set the connected flag so we can queue data */
+		soisconnecting(so);
+	}
+	stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
+	(void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
+
+	/* initialize authentication parameters for the assoc */
+	sctp_initialize_auth_params(inp, stcb);
+
+	sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
+	SCTP_TCB_UNLOCK(stcb);
+	return error;
+}
+
+static int
+sctp6_getaddr(struct socket *so, struct sockaddr **addr)
+{
+	struct sockaddr_in6 *sin6;
+	struct sctp_inpcb *inp;
+	uint32_t vrf_id;
+	struct sctp_ifa *sctp_ifa;
+
+	int error;
+
+	/*
+	 * Do the malloc first in case it blocks.
+	 */
+	SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
+	if (sin6 == NULL)
+		return ENOMEM;
+	sin6->sin6_family = AF_INET6;
+	sin6->sin6_len = sizeof(*sin6);
+
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == NULL) {
+		SCTP_FREE_SONAME(sin6);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
+		return ECONNRESET;
+	}
+	SCTP_INP_RLOCK(inp);
+	sin6->sin6_port = inp->sctp_lport;
+	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
+		/* For the bound all case you get back 0 */
+		if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
+			struct sctp_tcb *stcb;
+			struct sockaddr_in6 *sin_a6;
+			struct sctp_nets *net;
+			int fnd;
+
+			stcb = LIST_FIRST(&inp->sctp_asoc_list);
+			if (stcb == NULL) {
+				goto notConn6;
+			}
+			fnd = 0;
+			sin_a6 = NULL;
+			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
+				sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
+				if (sin_a6 == NULL)
+					/* this will make coverity happy */
+					continue;
+
+				if (sin_a6->sin6_family == AF_INET6) {
+					fnd = 1;
+					break;
+				}
+			}
+			if ((!fnd) || (sin_a6 == NULL)) {
+				/* punt */
+				goto notConn6;
+			}
+			vrf_id = inp->def_vrf_id;
+			sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id);
+			if (sctp_ifa) {
+				sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
+			}
+		} else {
+			/* For the bound all case you get back 0 */
+	notConn6:
+			memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
+		}
+	} else {
+		/* Take the first IPv6 address in the list */
+		struct sctp_laddr *laddr;
+		int fnd = 0;
+
+		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
+			if (laddr->ifa->address.sa.sa_family == AF_INET6) {
+				struct sockaddr_in6 *sin_a;
+
+				sin_a = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
+				sin6->sin6_addr = sin_a->sin6_addr;
+				fnd = 1;
+				break;
+			}
+		}
+		if (!fnd) {
+			SCTP_FREE_SONAME(sin6);
+			SCTP_INP_RUNLOCK(inp);
+			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
+			return ENOENT;
+		}
+	}
+	SCTP_INP_RUNLOCK(inp);
+	/* Scoping things for v6 */
+	if ((error = sa6_recoverscope(sin6)) != 0) {
+		SCTP_FREE_SONAME(sin6);
+		return (error);
+	}
+	(*addr) = (struct sockaddr *)sin6;
+	return (0);
+}
+
+static int
+sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
+{
+	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)*addr;
+	int fnd;
+	struct sockaddr_in6 *sin_a6;
+	struct sctp_inpcb *inp;
+	struct sctp_tcb *stcb;
+	struct sctp_nets *net;
+
+	int error;
+
+	/*
+	 * Do the malloc first in case it blocks.
+	 */
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
+		/* UDP type and listeners will drop out here */
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
+		return (ENOTCONN);
+	}
+	SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
+	if (sin6 == NULL)
+		return (ENOMEM);
+	sin6->sin6_family = AF_INET6;
+	sin6->sin6_len = sizeof(*sin6);
+
+	/* We must recapture incase we blocked */
+	inp = (struct sctp_inpcb *)so->so_pcb;
+	if (inp == NULL) {
+		SCTP_FREE_SONAME(sin6);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
+		return ECONNRESET;
+	}
+	SCTP_INP_RLOCK(inp);
+	stcb = LIST_FIRST(&inp->sctp_asoc_list);
+	if (stcb) {
+		SCTP_TCB_LOCK(stcb);
+	}
+	SCTP_INP_RUNLOCK(inp);
+	if (stcb == NULL) {
+		SCTP_FREE_SONAME(sin6);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
+		return ECONNRESET;
+	}
+	fnd = 0;
+	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
+		sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
+		if (sin_a6->sin6_family == AF_INET6) {
+			fnd = 1;
+			sin6->sin6_port = stcb->rport;
+			sin6->sin6_addr = sin_a6->sin6_addr;
+			break;
+		}
+	}
+	SCTP_TCB_UNLOCK(stcb);
+	if (!fnd) {
+		/* No IPv4 address */
+		SCTP_FREE_SONAME(sin6);
+		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
+		return ENOENT;
+	}
+	if ((error = sa6_recoverscope(sin6)) != 0)
+		return (error);
+	*addr = (struct sockaddr *)sin6;
+	return (0);
+}
+
+static int
+sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
+{
+	struct sockaddr *addr;
+	struct in6pcb *inp6 = sotoin6pcb(so);
+	int error;
+
+	if (inp6 == NULL) {
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return EINVAL;
+	}
+	/* allow v6 addresses precedence */
+	error = sctp6_getaddr(so, nam);
+	if (error) {
+		/* try v4 next if v6 failed */
+		error = sctp_ingetaddr(so, nam);
+		if (error) {
+			return (error);
+		}
+		addr = *nam;
+		/* if I'm V6ONLY, convert it to v4-mapped */
+		if (SCTP_IPV6_V6ONLY(inp6)) {
+			struct sockaddr_in6 sin6;
+
+			in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
+			memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
+
+		}
+	}
+	return (error);
+}
+
+
+static int
+sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
+{
+	struct sockaddr *addr = *nam;
+	struct in6pcb *inp6 = sotoin6pcb(so);
+	int error;
+
+	if (inp6 == NULL) {
+		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
+		return EINVAL;
+	}
+	/* allow v6 addresses precedence */
+	error = sctp6_peeraddr(so, nam);
+	if (error) {
+		/* try v4 next if v6 failed */
+		error = sctp_peeraddr(so, nam);
+		if (error) {
+			return (error);
+		}
+		/* if I'm V6ONLY, convert it to v4-mapped */
+		if (SCTP_IPV6_V6ONLY(inp6)) {
+			struct sockaddr_in6 sin6;
+
+			in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6);
+			memcpy(addr, &sin6, sizeof(struct sockaddr_in6));
+		}
+	}
+	return error;
+}
+
+struct pr_usrreqs sctp6_usrreqs = {
+	.pru_abort = sctp6_abort,
+	.pru_accept = sctp_accept,
+	.pru_attach = sctp6_attach,
+	.pru_bind = sctp6_bind,
+	.pru_connect = sctp6_connect,
+	.pru_control = in6_control,
+	.pru_close = sctp6_close,
+	.pru_detach = sctp6_close,
+	.pru_sopoll = sopoll_generic,
+	.pru_flush = sctp_flush,
+	.pru_disconnect = sctp6_disconnect,
+	.pru_listen = sctp_listen,
+	.pru_peeraddr = sctp6_getpeeraddr,
+	.pru_send = sctp6_send,
+	.pru_shutdown = sctp_shutdown,
+	.pru_sockaddr = sctp6_in6getaddr,
+	.pru_sosend = sctp_sosend,
+	.pru_soreceive = sctp_soreceive
+};