1253 lines
35 KiB
C
1253 lines
35 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* Copyright (c) 2010-2011 Juniper Networks, Inc.
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* All rights reserved.
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*
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* Portions of this software were developed by Robert N. M. Watson under
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* contract to Juniper Networks, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $
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*/
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/*-
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* Copyright (c) 1982, 1986, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in_pcb.c 8.2 (Berkeley) 1/4/94
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*/
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#include <sys/cdefs.h>
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include "opt_ipsec.h"
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#include "opt_route.h"
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#include "opt_rss.h"
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#include <sys/hash.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/domain.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/smr.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sockio.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/jail.h>
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#include <vm/uma.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_llatbl.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <net/route/nhop.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip6.h>
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#include <netinet/ip_var.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/nd6.h>
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#include <netinet/in_pcb.h>
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#include <netinet/in_pcb_var.h>
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#include <netinet6/in6_pcb.h>
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#include <netinet6/in6_fib.h>
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#include <netinet6/scope6_var.h>
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int
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in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
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{
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struct socket *so = inp->inp_socket;
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u_int16_t lport = 0;
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int error, lookupflags = 0;
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#ifdef INVARIANTS
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struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
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#endif
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INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(pcbinfo);
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error = prison_local_ip6(cred, laddr,
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((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0));
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if (error)
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return(error);
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/* XXX: this is redundant when called from in6_pcbbind */
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if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
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lookupflags = INPLOOKUP_WILDCARD;
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inp->inp_flags |= INP_ANONPORT;
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error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags);
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if (error != 0)
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return (error);
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inp->inp_lport = lport;
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if (in_pcbinshash(inp) != 0) {
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inp->in6p_laddr = in6addr_any;
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inp->inp_lport = 0;
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return (EAGAIN);
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}
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return (0);
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}
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int
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in6_pcbbind(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred)
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{
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struct socket *so = inp->inp_socket;
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struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
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u_short lport = 0;
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int error, lookupflags = 0;
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int reuseport = (so->so_options & SO_REUSEPORT);
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/*
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* XXX: Maybe we could let SO_REUSEPORT_LB set SO_REUSEPORT bit here
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* so that we don't have to add to the (already messy) code below.
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*/
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int reuseport_lb = (so->so_options & SO_REUSEPORT_LB);
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INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(pcbinfo);
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if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
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return (EINVAL);
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if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
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lookupflags = INPLOOKUP_WILDCARD;
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if (sin6 == NULL) {
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if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
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((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
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return (error);
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} else {
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KASSERT(sin6->sin6_family == AF_INET6,
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("%s: invalid address family for %p", __func__, sin6));
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KASSERT(sin6->sin6_len == sizeof(*sin6),
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("%s: invalid address length for %p", __func__, sin6));
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if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
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return(error);
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if ((error = prison_local_ip6(cred, &sin6->sin6_addr,
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((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
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return (error);
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lport = sin6->sin6_port;
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if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
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/*
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* Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
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* allow compepte duplication of binding if
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* SO_REUSEPORT is set, or if SO_REUSEADDR is set
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* and a multicast address is bound on both
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* new and duplicated sockets.
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*/
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if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
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reuseport = SO_REUSEADDR|SO_REUSEPORT;
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/*
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* XXX: How to deal with SO_REUSEPORT_LB here?
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* Treat same as SO_REUSEPORT for now.
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*/
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if ((so->so_options &
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(SO_REUSEADDR|SO_REUSEPORT_LB)) != 0)
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reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB;
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} else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
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struct epoch_tracker et;
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struct ifaddr *ifa;
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sin6->sin6_port = 0; /* yech... */
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NET_EPOCH_ENTER(et);
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if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) ==
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NULL &&
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(inp->inp_flags & INP_BINDANY) == 0) {
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NET_EPOCH_EXIT(et);
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return (EADDRNOTAVAIL);
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}
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/*
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* XXX: bind to an anycast address might accidentally
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* cause sending a packet with anycast source address.
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* We should allow to bind to a deprecated address, since
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* the application dares to use it.
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*/
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if (ifa != NULL &&
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((struct in6_ifaddr *)ifa)->ia6_flags &
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(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
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NET_EPOCH_EXIT(et);
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return (EADDRNOTAVAIL);
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}
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NET_EPOCH_EXIT(et);
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}
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if (lport) {
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struct inpcb *t;
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/* GROSS */
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if (ntohs(lport) <= V_ipport_reservedhigh &&
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ntohs(lport) >= V_ipport_reservedlow &&
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priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT))
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return (EACCES);
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if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) &&
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priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) {
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t = in6_pcblookup_local(pcbinfo,
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&sin6->sin6_addr, lport,
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INPLOOKUP_WILDCARD, cred);
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if (t != NULL &&
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(so->so_type != SOCK_STREAM ||
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IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) &&
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(!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
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!IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
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(t->inp_socket->so_options & SO_REUSEPORT) ||
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(t->inp_socket->so_options & SO_REUSEPORT_LB) == 0) &&
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(inp->inp_cred->cr_uid !=
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t->inp_cred->cr_uid))
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return (EADDRINUSE);
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#ifdef INET
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if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
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IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
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struct sockaddr_in sin;
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in6_sin6_2_sin(&sin, sin6);
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t = in_pcblookup_local(pcbinfo,
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sin.sin_addr, lport,
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INPLOOKUP_WILDCARD, cred);
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if (t != NULL &&
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(so->so_type != SOCK_STREAM ||
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ntohl(t->inp_faddr.s_addr) ==
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INADDR_ANY) &&
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(inp->inp_cred->cr_uid !=
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t->inp_cred->cr_uid))
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return (EADDRINUSE);
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}
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#endif
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}
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t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
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lport, lookupflags, cred);
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if (t && (reuseport & t->inp_socket->so_options) == 0 &&
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(reuseport_lb & t->inp_socket->so_options) == 0) {
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return (EADDRINUSE);
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}
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#ifdef INET
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if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
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IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
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struct sockaddr_in sin;
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in6_sin6_2_sin(&sin, sin6);
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t = in_pcblookup_local(pcbinfo, sin.sin_addr,
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lport, lookupflags, cred);
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if (t &&
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(reuseport & t->inp_socket->so_options) == 0 &&
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(reuseport_lb & t->inp_socket->so_options) == 0 &&
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(ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
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(t->inp_vflag & INP_IPV6PROTO) != 0)) {
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return (EADDRINUSE);
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}
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}
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#endif
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}
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inp->in6p_laddr = sin6->sin6_addr;
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}
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if (lport == 0) {
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if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) {
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/* Undo an address bind that may have occurred. */
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inp->in6p_laddr = in6addr_any;
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return (error);
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}
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} else {
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inp->inp_lport = lport;
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if (in_pcbinshash(inp) != 0) {
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inp->in6p_laddr = in6addr_any;
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inp->inp_lport = 0;
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return (EAGAIN);
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}
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}
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return (0);
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}
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/*
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* Transform old in6_pcbconnect() into an inner subroutine for new
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* in6_pcbconnect(): Do some validity-checking on the remote
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* address (in mbuf 'nam') and then determine local host address
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* (i.e., which interface) to use to access that remote host.
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*
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* This preserves definition of in6_pcbconnect(), while supporting a
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* slightly different version for T/TCP. (This is more than
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* a bit of a kludge, but cleaning up the internal interfaces would
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* have forced minor changes in every protocol).
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*/
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static int
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in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6,
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struct in6_addr *plocal_addr6)
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{
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int error = 0;
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int scope_ambiguous = 0;
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struct in6_addr in6a;
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NET_EPOCH_ASSERT();
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INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */
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if (sin6->sin6_port == 0)
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return (EADDRNOTAVAIL);
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if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone)
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scope_ambiguous = 1;
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if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
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return(error);
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if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) {
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/*
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* If the destination address is UNSPECIFIED addr,
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* use the loopback addr, e.g ::1.
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*/
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if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
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sin6->sin6_addr = in6addr_loopback;
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}
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if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0)
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return (error);
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error = in6_selectsrc_socket(sin6, inp->in6p_outputopts,
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inp, inp->inp_cred, scope_ambiguous, &in6a, NULL);
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if (error)
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return (error);
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if (IN6_IS_ADDR_UNSPECIFIED(&in6a))
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return (EHOSTUNREACH);
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/*
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* Do not update this earlier, in case we return with an error.
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*
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* XXX: this in6_selectsrc_socket result might replace the bound local
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* address with the address specified by setsockopt(IPV6_PKTINFO).
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* Is it the intended behavior?
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*/
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*plocal_addr6 = in6a;
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/*
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* Don't do pcblookup call here; return interface in
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* plocal_addr6
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* and exit to caller, that will do the lookup.
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*/
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return (0);
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}
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|
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/*
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* Outer subroutine:
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* Connect from a socket to a specified address.
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* Both address and port must be specified in argument sin.
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* If don't have a local address for this socket yet,
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* then pick one.
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*/
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int
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in6_pcbconnect(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred,
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bool rehash __unused)
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{
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struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
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struct sockaddr_in6 laddr6;
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int error;
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NET_EPOCH_ASSERT();
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INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(pcbinfo);
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KASSERT(sin6->sin6_family == AF_INET6,
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("%s: invalid address family for %p", __func__, sin6));
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KASSERT(sin6->sin6_len == sizeof(*sin6),
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("%s: invalid address length for %p", __func__, sin6));
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KASSERT(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr),
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("%s: inp is already connected", __func__));
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bzero(&laddr6, sizeof(laddr6));
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laddr6.sin6_family = AF_INET6;
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#ifdef ROUTE_MPATH
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if (CALC_FLOWID_OUTBOUND) {
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uint32_t hash_type, hash_val;
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hash_val = fib6_calc_software_hash(&inp->in6p_laddr,
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&sin6->sin6_addr, 0, sin6->sin6_port,
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inp->inp_socket->so_proto->pr_protocol, &hash_type);
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inp->inp_flowid = hash_val;
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inp->inp_flowtype = hash_type;
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}
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#endif
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/*
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* Call inner routine, to assign local interface address.
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* in6_pcbladdr() may automatically fill in sin6_scope_id.
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*/
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if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr)) != 0)
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return (error);
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|
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if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr,
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sin6->sin6_port, IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) ?
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&laddr6.sin6_addr : &inp->in6p_laddr, inp->inp_lport, 0,
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M_NODOM) != NULL)
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return (EADDRINUSE);
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if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
|
|
if (inp->inp_lport == 0) {
|
|
error = in_pcb_lport_dest(inp,
|
|
(struct sockaddr *) &laddr6, &inp->inp_lport,
|
|
(struct sockaddr *) sin6, sin6->sin6_port, cred,
|
|
INPLOOKUP_WILDCARD);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
inp->in6p_laddr = laddr6.sin6_addr;
|
|
}
|
|
inp->in6p_faddr = sin6->sin6_addr;
|
|
inp->inp_fport = sin6->sin6_port;
|
|
/* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
|
|
inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
|
|
if (inp->inp_flags & IN6P_AUTOFLOWLABEL)
|
|
inp->inp_flow |=
|
|
(htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK);
|
|
|
|
if ((inp->inp_flags & INP_INHASHLIST) != 0) {
|
|
in_pcbrehash(inp);
|
|
} else {
|
|
in_pcbinshash(inp);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
in6_pcbdisconnect(struct inpcb *inp)
|
|
{
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
|
|
KASSERT(inp->inp_smr == SMR_SEQ_INVALID,
|
|
("%s: inp %p was already disconnected", __func__, inp));
|
|
|
|
in_pcbremhash_locked(inp);
|
|
|
|
/* See the comment in in_pcbinshash(). */
|
|
inp->inp_smr = smr_advance(inp->inp_pcbinfo->ipi_smr);
|
|
|
|
/* XXX-MJ torn writes are visible to SMR lookup */
|
|
memset(&inp->in6p_laddr, 0, sizeof(inp->in6p_laddr));
|
|
memset(&inp->in6p_faddr, 0, sizeof(inp->in6p_faddr));
|
|
inp->inp_fport = 0;
|
|
/* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
|
|
inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
|
|
}
|
|
|
|
struct sockaddr *
|
|
in6_sockaddr(in_port_t port, struct in6_addr *addr_p)
|
|
{
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK);
|
|
bzero(sin6, sizeof *sin6);
|
|
sin6->sin6_family = AF_INET6;
|
|
sin6->sin6_len = sizeof(*sin6);
|
|
sin6->sin6_port = port;
|
|
sin6->sin6_addr = *addr_p;
|
|
(void)sa6_recoverscope(sin6); /* XXX: should catch errors */
|
|
|
|
return (struct sockaddr *)sin6;
|
|
}
|
|
|
|
struct sockaddr *
|
|
in6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p)
|
|
{
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 *sin6_p;
|
|
|
|
bzero(&sin, sizeof sin);
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof(sin);
|
|
sin.sin_port = port;
|
|
sin.sin_addr = *addr_p;
|
|
|
|
sin6_p = malloc(sizeof *sin6_p, M_SONAME,
|
|
M_WAITOK);
|
|
in6_sin_2_v4mapsin6(&sin, sin6_p);
|
|
|
|
return (struct sockaddr *)sin6_p;
|
|
}
|
|
|
|
int
|
|
in6_getsockaddr(struct socket *so, struct sockaddr **nam)
|
|
{
|
|
struct inpcb *inp;
|
|
struct in6_addr addr;
|
|
in_port_t port;
|
|
|
|
inp = sotoinpcb(so);
|
|
KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL"));
|
|
|
|
INP_RLOCK(inp);
|
|
port = inp->inp_lport;
|
|
addr = inp->in6p_laddr;
|
|
INP_RUNLOCK(inp);
|
|
|
|
*nam = in6_sockaddr(port, &addr);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
in6_getpeeraddr(struct socket *so, struct sockaddr **nam)
|
|
{
|
|
struct inpcb *inp;
|
|
struct in6_addr addr;
|
|
in_port_t port;
|
|
|
|
inp = sotoinpcb(so);
|
|
KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL"));
|
|
|
|
INP_RLOCK(inp);
|
|
port = inp->inp_fport;
|
|
addr = inp->in6p_faddr;
|
|
INP_RUNLOCK(inp);
|
|
|
|
*nam = in6_sockaddr(port, &addr);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam)
|
|
{
|
|
struct inpcb *inp;
|
|
int error;
|
|
|
|
inp = sotoinpcb(so);
|
|
KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL"));
|
|
|
|
#ifdef INET
|
|
if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
|
|
error = in_getsockaddr(so, nam);
|
|
if (error == 0)
|
|
in6_sin_2_v4mapsin6_in_sock(nam);
|
|
} else
|
|
#endif
|
|
{
|
|
/* scope issues will be handled in in6_getsockaddr(). */
|
|
error = in6_getsockaddr(so, nam);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
int
|
|
in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam)
|
|
{
|
|
struct inpcb *inp;
|
|
int error;
|
|
|
|
inp = sotoinpcb(so);
|
|
KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL"));
|
|
|
|
#ifdef INET
|
|
if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
|
|
error = in_getpeeraddr(so, nam);
|
|
if (error == 0)
|
|
in6_sin_2_v4mapsin6_in_sock(nam);
|
|
} else
|
|
#endif
|
|
/* scope issues will be handled in in6_getpeeraddr(). */
|
|
error = in6_getpeeraddr(so, nam);
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Pass some notification to all connections of a protocol
|
|
* associated with address dst. The local address and/or port numbers
|
|
* may be specified to limit the search. The "usual action" will be
|
|
* taken, depending on the ctlinput cmd. The caller must filter any
|
|
* cmds that are uninteresting (e.g., no error in the map).
|
|
* Call the protocol specific routine (if any) to report
|
|
* any errors for each matching socket.
|
|
*/
|
|
static bool
|
|
inp_match6(const struct inpcb *inp, void *v __unused)
|
|
{
|
|
|
|
return ((inp->inp_vflag & INP_IPV6) != 0);
|
|
}
|
|
|
|
void
|
|
in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst,
|
|
u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg,
|
|
int errno, void *cmdarg,
|
|
struct inpcb *(*notify)(struct inpcb *, int))
|
|
{
|
|
struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB,
|
|
inp_match6, NULL);
|
|
struct inpcb *inp;
|
|
struct sockaddr_in6 sa6_src;
|
|
u_short fport = fport_arg, lport = lport_arg;
|
|
u_int32_t flowinfo;
|
|
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr))
|
|
return;
|
|
|
|
/*
|
|
* note that src can be NULL when we get notify by local fragmentation.
|
|
*/
|
|
sa6_src = (src == NULL) ? sa6_any : *src;
|
|
flowinfo = sa6_src.sin6_flowinfo;
|
|
|
|
while ((inp = inp_next(&inpi)) != NULL) {
|
|
INP_WLOCK_ASSERT(inp);
|
|
/*
|
|
* If the error designates a new path MTU for a destination
|
|
* and the application (associated with this socket) wanted to
|
|
* know the value, notify.
|
|
* XXX: should we avoid to notify the value to TCP sockets?
|
|
*/
|
|
if (errno == EMSGSIZE && cmdarg != NULL)
|
|
ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg);
|
|
|
|
/*
|
|
* Detect if we should notify the error. If no source and
|
|
* destination ports are specified, but non-zero flowinfo and
|
|
* local address match, notify the error. This is the case
|
|
* when the error is delivered with an encrypted buffer
|
|
* by ESP. Otherwise, just compare addresses and ports
|
|
* as usual.
|
|
*/
|
|
if (lport == 0 && fport == 0 && flowinfo &&
|
|
inp->inp_socket != NULL &&
|
|
flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) &&
|
|
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr))
|
|
goto do_notify;
|
|
else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr,
|
|
&sa6_dst->sin6_addr) ||
|
|
inp->inp_socket == 0 ||
|
|
(lport && inp->inp_lport != lport) ||
|
|
(!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) &&
|
|
!IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
|
|
&sa6_src.sin6_addr)) ||
|
|
(fport && inp->inp_fport != fport)) {
|
|
continue;
|
|
}
|
|
|
|
do_notify:
|
|
if (notify)
|
|
(*notify)(inp, errno);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Lookup a PCB based on the local address and port. Caller must hold the
|
|
* hash lock. No inpcb locks or references are acquired.
|
|
*/
|
|
struct inpcb *
|
|
in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr,
|
|
u_short lport, int lookupflags, struct ucred *cred)
|
|
{
|
|
struct inpcb *inp;
|
|
int matchwild = 3, wildcard;
|
|
|
|
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
|
|
struct inpcbhead *head;
|
|
/*
|
|
* Look for an unconnected (wildcard foreign addr) PCB that
|
|
* matches the local address and port we're looking for.
|
|
*/
|
|
head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport,
|
|
pcbinfo->ipi_hashmask)];
|
|
CK_LIST_FOREACH(inp, head, inp_hash_wild) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
|
|
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
|
|
inp->inp_lport == lport) {
|
|
/* Found. */
|
|
if (prison_equal_ip6(cred->cr_prison,
|
|
inp->inp_cred->cr_prison))
|
|
return (inp);
|
|
}
|
|
}
|
|
/*
|
|
* Not found.
|
|
*/
|
|
return (NULL);
|
|
} else {
|
|
struct inpcbporthead *porthash;
|
|
struct inpcbport *phd;
|
|
struct inpcb *match = NULL;
|
|
/*
|
|
* Best fit PCB lookup.
|
|
*
|
|
* First see if this local port is in use by looking on the
|
|
* port hash list.
|
|
*/
|
|
porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
|
|
pcbinfo->ipi_porthashmask)];
|
|
CK_LIST_FOREACH(phd, porthash, phd_hash) {
|
|
if (phd->phd_port == lport)
|
|
break;
|
|
}
|
|
if (phd != NULL) {
|
|
/*
|
|
* Port is in use by one or more PCBs. Look for best
|
|
* fit.
|
|
*/
|
|
CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
|
|
wildcard = 0;
|
|
if (!prison_equal_ip6(cred->cr_prison,
|
|
inp->inp_cred->cr_prison))
|
|
continue;
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
|
|
wildcard++;
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(
|
|
&inp->in6p_laddr)) {
|
|
if (IN6_IS_ADDR_UNSPECIFIED(laddr))
|
|
wildcard++;
|
|
else if (!IN6_ARE_ADDR_EQUAL(
|
|
&inp->in6p_laddr, laddr))
|
|
continue;
|
|
} else {
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(laddr))
|
|
wildcard++;
|
|
}
|
|
if (wildcard < matchwild) {
|
|
match = inp;
|
|
matchwild = wildcard;
|
|
if (matchwild == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return (match);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
in6_multi_match(const struct inpcb *inp, void *v __unused)
|
|
{
|
|
|
|
if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL)
|
|
return (true);
|
|
else
|
|
return (false);
|
|
}
|
|
|
|
void
|
|
in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
|
|
{
|
|
struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB,
|
|
in6_multi_match, NULL);
|
|
struct inpcb *inp;
|
|
struct in6_multi *inm;
|
|
struct in6_mfilter *imf;
|
|
struct ip6_moptions *im6o;
|
|
|
|
IN6_MULTI_LOCK_ASSERT();
|
|
|
|
while ((inp = inp_next(&inpi)) != NULL) {
|
|
INP_RLOCK_ASSERT(inp);
|
|
|
|
im6o = inp->in6p_moptions;
|
|
/*
|
|
* Unselect the outgoing ifp for multicast if it
|
|
* is being detached.
|
|
*/
|
|
if (im6o->im6o_multicast_ifp == ifp)
|
|
im6o->im6o_multicast_ifp = NULL;
|
|
/*
|
|
* Drop multicast group membership if we joined
|
|
* through the interface being detached.
|
|
*/
|
|
restart:
|
|
IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) {
|
|
if ((inm = imf->im6f_in6m) == NULL)
|
|
continue;
|
|
if (inm->in6m_ifp != ifp)
|
|
continue;
|
|
ip6_mfilter_remove(&im6o->im6o_head, imf);
|
|
in6_leavegroup_locked(inm, NULL);
|
|
ip6_mfilter_free(imf);
|
|
goto restart;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for alternatives when higher level complains
|
|
* about service problems. For now, invalidate cached
|
|
* routing information. If the route was created dynamically
|
|
* (by a redirect), time to try a default gateway again.
|
|
*/
|
|
void
|
|
in6_losing(struct inpcb *inp)
|
|
{
|
|
|
|
RO_INVALIDATE_CACHE(&inp->inp_route6);
|
|
}
|
|
|
|
/*
|
|
* After a routing change, flush old routing
|
|
* and allocate a (hopefully) better one.
|
|
*/
|
|
struct inpcb *
|
|
in6_rtchange(struct inpcb *inp, int errno __unused)
|
|
{
|
|
|
|
RO_INVALIDATE_CACHE(&inp->inp_route6);
|
|
return inp;
|
|
}
|
|
|
|
static bool
|
|
in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain)
|
|
{
|
|
return (domain == M_NODOM || domain == grp->il_numa_domain);
|
|
}
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo,
|
|
const struct in6_addr *faddr, uint16_t fport, const struct in6_addr *laddr,
|
|
uint16_t lport, uint8_t domain)
|
|
{
|
|
const struct inpcblbgrouphead *hdr;
|
|
struct inpcblbgroup *grp;
|
|
struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild;
|
|
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
hdr = &pcbinfo->ipi_lbgrouphashbase[
|
|
INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)];
|
|
|
|
/*
|
|
* Search for an LB group match based on the following criteria:
|
|
* - prefer jailed groups to non-jailed groups
|
|
* - prefer exact source address matches to wildcard matches
|
|
* - prefer groups bound to the specified NUMA domain
|
|
*/
|
|
jail_exact = jail_wild = local_exact = local_wild = NULL;
|
|
CK_LIST_FOREACH(grp, hdr, il_list) {
|
|
bool injail;
|
|
|
|
#ifdef INET
|
|
if (!(grp->il_vflag & INP_IPV6))
|
|
continue;
|
|
#endif
|
|
if (grp->il_lport != lport)
|
|
continue;
|
|
|
|
injail = prison_flag(grp->il_cred, PR_IP6) != 0;
|
|
if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison,
|
|
laddr) != 0)
|
|
continue;
|
|
|
|
if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) {
|
|
if (injail) {
|
|
jail_exact = grp;
|
|
if (in6_pcblookup_lb_numa_match(grp, domain))
|
|
/* This is a perfect match. */
|
|
goto out;
|
|
} else if (local_exact == NULL ||
|
|
in6_pcblookup_lb_numa_match(grp, domain)) {
|
|
local_exact = grp;
|
|
}
|
|
} else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr)) {
|
|
if (injail) {
|
|
if (jail_wild == NULL ||
|
|
in6_pcblookup_lb_numa_match(grp, domain))
|
|
jail_wild = grp;
|
|
} else if (local_wild == NULL ||
|
|
in6_pcblookup_lb_numa_match(grp, domain)) {
|
|
local_wild = grp;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (jail_exact != NULL)
|
|
grp = jail_exact;
|
|
else if (jail_wild != NULL)
|
|
grp = jail_wild;
|
|
else if (local_exact != NULL)
|
|
grp = local_exact;
|
|
else
|
|
grp = local_wild;
|
|
if (grp == NULL)
|
|
return (NULL);
|
|
out:
|
|
return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) %
|
|
grp->il_inpcnt]);
|
|
}
|
|
|
|
static bool
|
|
in6_pcblookup_exact_match(const struct inpcb *inp, const struct in6_addr *faddr,
|
|
u_short fport, const struct in6_addr *laddr, u_short lport)
|
|
{
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
return (false);
|
|
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
|
|
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
|
|
inp->inp_fport == fport && inp->inp_lport == lport)
|
|
return (true);
|
|
return (false);
|
|
}
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_hash_exact(struct inpcbinfo *pcbinfo,
|
|
const struct in6_addr *faddr, u_short fport,
|
|
const struct in6_addr *laddr, u_short lport)
|
|
{
|
|
struct inpcbhead *head;
|
|
struct inpcb *inp;
|
|
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
/*
|
|
* First look for an exact match.
|
|
*/
|
|
head = &pcbinfo->ipi_hash_exact[INP6_PCBHASH(faddr, lport, fport,
|
|
pcbinfo->ipi_hashmask)];
|
|
CK_LIST_FOREACH(inp, head, inp_hash_exact) {
|
|
if (in6_pcblookup_exact_match(inp, faddr, fport, laddr, lport))
|
|
return (inp);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
typedef enum {
|
|
INPLOOKUP_MATCH_NONE = 0,
|
|
INPLOOKUP_MATCH_WILD = 1,
|
|
INPLOOKUP_MATCH_LADDR = 2,
|
|
} inp_lookup_match_t;
|
|
|
|
static inp_lookup_match_t
|
|
in6_pcblookup_wild_match(const struct inpcb *inp, const struct in6_addr *laddr,
|
|
u_short lport)
|
|
{
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
return (INPLOOKUP_MATCH_NONE);
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
|
|
inp->inp_lport != lport)
|
|
return (INPLOOKUP_MATCH_NONE);
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
|
|
return (INPLOOKUP_MATCH_WILD);
|
|
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr))
|
|
return (INPLOOKUP_MATCH_LADDR);
|
|
return (INPLOOKUP_MATCH_NONE);
|
|
}
|
|
|
|
#define INP_LOOKUP_AGAIN ((struct inpcb *)(uintptr_t)-1)
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_hash_wild_smr(struct inpcbinfo *pcbinfo,
|
|
const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr,
|
|
u_short lport, const inp_lookup_t lockflags)
|
|
{
|
|
struct inpcbhead *head;
|
|
struct inpcb *inp;
|
|
|
|
KASSERT(SMR_ENTERED(pcbinfo->ipi_smr),
|
|
("%s: not in SMR read section", __func__));
|
|
|
|
head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport,
|
|
pcbinfo->ipi_hashmask)];
|
|
CK_LIST_FOREACH(inp, head, inp_hash_wild) {
|
|
inp_lookup_match_t match;
|
|
|
|
match = in6_pcblookup_wild_match(inp, laddr, lport);
|
|
if (match == INPLOOKUP_MATCH_NONE)
|
|
continue;
|
|
|
|
if (__predict_true(inp_smr_lock(inp, lockflags))) {
|
|
match = in6_pcblookup_wild_match(inp, laddr, lport);
|
|
if (match != INPLOOKUP_MATCH_NONE &&
|
|
prison_check_ip6_locked(inp->inp_cred->cr_prison,
|
|
laddr) == 0)
|
|
return (inp);
|
|
inp_unlock(inp, lockflags);
|
|
}
|
|
|
|
/*
|
|
* The matching socket disappeared out from under us. Fall back
|
|
* to a serialized lookup.
|
|
*/
|
|
return (INP_LOOKUP_AGAIN);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_hash_wild_locked(struct inpcbinfo *pcbinfo,
|
|
const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr,
|
|
u_short lport)
|
|
{
|
|
struct inpcbhead *head;
|
|
struct inpcb *inp, *jail_wild, *local_exact, *local_wild;
|
|
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
/*
|
|
* Order of socket selection - we always prefer jails.
|
|
* 1. jailed, non-wild.
|
|
* 2. jailed, wild.
|
|
* 3. non-jailed, non-wild.
|
|
* 4. non-jailed, wild.
|
|
*/
|
|
head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport,
|
|
pcbinfo->ipi_hashmask)];
|
|
local_wild = local_exact = jail_wild = NULL;
|
|
CK_LIST_FOREACH(inp, head, inp_hash_wild) {
|
|
inp_lookup_match_t match;
|
|
bool injail;
|
|
|
|
match = in6_pcblookup_wild_match(inp, laddr, lport);
|
|
if (match == INPLOOKUP_MATCH_NONE)
|
|
continue;
|
|
|
|
injail = prison_flag(inp->inp_cred, PR_IP6) != 0;
|
|
if (injail) {
|
|
if (prison_check_ip6_locked(
|
|
inp->inp_cred->cr_prison, laddr) != 0)
|
|
continue;
|
|
} else {
|
|
if (local_exact != NULL)
|
|
continue;
|
|
}
|
|
|
|
if (match == INPLOOKUP_MATCH_LADDR) {
|
|
if (injail)
|
|
return (inp);
|
|
else
|
|
local_exact = inp;
|
|
} else {
|
|
if (injail)
|
|
jail_wild = inp;
|
|
else
|
|
local_wild = inp;
|
|
}
|
|
}
|
|
|
|
if (jail_wild != NULL)
|
|
return (jail_wild);
|
|
if (local_exact != NULL)
|
|
return (local_exact);
|
|
if (local_wild != NULL)
|
|
return (local_wild);
|
|
return (NULL);
|
|
}
|
|
|
|
struct inpcb *
|
|
in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo,
|
|
const struct in6_addr *faddr, u_int fport_arg,
|
|
const struct in6_addr *laddr, u_int lport_arg,
|
|
int lookupflags, uint8_t numa_domain)
|
|
{
|
|
struct inpcb *inp;
|
|
u_short fport = fport_arg, lport = lport_arg;
|
|
|
|
KASSERT((lookupflags & ~INPLOOKUP_WILDCARD) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
KASSERT(!IN6_IS_ADDR_UNSPECIFIED(faddr),
|
|
("%s: invalid foreign address", __func__));
|
|
KASSERT(!IN6_IS_ADDR_UNSPECIFIED(laddr),
|
|
("%s: invalid local address", __func__));
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport);
|
|
if (inp != NULL)
|
|
return (inp);
|
|
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
|
|
inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, laddr,
|
|
lport, numa_domain);
|
|
if (inp == NULL) {
|
|
inp = in6_pcblookup_hash_wild_locked(pcbinfo, faddr,
|
|
fport, laddr, lport);
|
|
}
|
|
}
|
|
return (inp);
|
|
}
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_hash(struct inpcbinfo *pcbinfo, const struct in6_addr *faddr,
|
|
u_int fport, const struct in6_addr *laddr, u_int lport, int lookupflags,
|
|
uint8_t numa_domain)
|
|
{
|
|
struct inpcb *inp;
|
|
const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK;
|
|
|
|
KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
|
|
("%s: LOCKPCB not set", __func__));
|
|
|
|
INP_HASH_WLOCK(pcbinfo);
|
|
inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags & ~INPLOOKUP_LOCKMASK, numa_domain);
|
|
if (inp != NULL && !inp_trylock(inp, lockflags)) {
|
|
in_pcbref(inp);
|
|
INP_HASH_WUNLOCK(pcbinfo);
|
|
inp_lock(inp, lockflags);
|
|
if (in_pcbrele(inp, lockflags))
|
|
/* XXX-MJ or retry until we get a negative match? */
|
|
inp = NULL;
|
|
} else {
|
|
INP_HASH_WUNLOCK(pcbinfo);
|
|
}
|
|
return (inp);
|
|
}
|
|
|
|
static struct inpcb *
|
|
in6_pcblookup_hash_smr(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
|
|
u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int lookupflags,
|
|
uint8_t numa_domain)
|
|
{
|
|
struct inpcb *inp;
|
|
const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK;
|
|
const u_short fport = fport_arg, lport = lport_arg;
|
|
|
|
KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
|
|
("%s: LOCKPCB not set", __func__));
|
|
|
|
smr_enter(pcbinfo->ipi_smr);
|
|
inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport);
|
|
if (inp != NULL) {
|
|
if (__predict_true(inp_smr_lock(inp, lockflags))) {
|
|
if (__predict_true(in6_pcblookup_exact_match(inp,
|
|
faddr, fport, laddr, lport)))
|
|
return (inp);
|
|
inp_unlock(inp, lockflags);
|
|
}
|
|
/*
|
|
* We failed to lock the inpcb, or its connection state changed
|
|
* out from under us. Fall back to a precise search.
|
|
*/
|
|
return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags, numa_domain));
|
|
}
|
|
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
|
|
inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport,
|
|
laddr, lport, numa_domain);
|
|
if (inp != NULL) {
|
|
if (__predict_true(inp_smr_lock(inp, lockflags))) {
|
|
if (__predict_true(in6_pcblookup_wild_match(inp,
|
|
laddr, lport) != INPLOOKUP_MATCH_NONE))
|
|
return (inp);
|
|
inp_unlock(inp, lockflags);
|
|
}
|
|
inp = INP_LOOKUP_AGAIN;
|
|
} else {
|
|
inp = in6_pcblookup_hash_wild_smr(pcbinfo, faddr, fport,
|
|
laddr, lport, lockflags);
|
|
}
|
|
if (inp == INP_LOOKUP_AGAIN) {
|
|
return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr,
|
|
lport, lookupflags, numa_domain));
|
|
}
|
|
}
|
|
|
|
if (inp == NULL)
|
|
smr_exit(pcbinfo->ipi_smr);
|
|
|
|
return (inp);
|
|
}
|
|
|
|
/*
|
|
* Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf
|
|
* from which a pre-calculated hash value may be extracted.
|
|
*/
|
|
struct inpcb *
|
|
in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport,
|
|
struct in6_addr *laddr, u_int lport, int lookupflags,
|
|
struct ifnet *ifp __unused)
|
|
{
|
|
return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags, M_NODOM));
|
|
}
|
|
|
|
struct inpcb *
|
|
in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
|
|
u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
|
|
struct ifnet *ifp __unused, struct mbuf *m)
|
|
{
|
|
return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags, m->m_pkthdr.numa_domain));
|
|
}
|
|
|
|
void
|
|
init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst)
|
|
{
|
|
struct ip6_hdr *ip;
|
|
|
|
ip = mtod(m, struct ip6_hdr *);
|
|
bzero(sin6, sizeof(*sin6));
|
|
sin6->sin6_len = sizeof(*sin6);
|
|
sin6->sin6_family = AF_INET6;
|
|
sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src;
|
|
|
|
(void)sa6_recoverscope(sin6); /* XXX: should catch errors... */
|
|
|
|
return;
|
|
}
|