c25290420e
from the FreeBSD network code. The flag is still kept around in the "sys/mbuf.h" header file, but does no longer have any users. Instead the "m_pkthdr.rsstype" field in the mbuf structure is now used to decide the meaning of the "m_pkthdr.flowid" field. To modify the "m_pkthdr.rsstype" field please use the existing "M_HASHTYPE_XXX" macros as defined in the "sys/mbuf.h" header file. This patch introduces new behaviour in the transmit direction. Previously network drivers checked if "M_FLOWID" was set in "m_flags" before using the "m_pkthdr.flowid" field. This check has now now been replaced by checking if "M_HASHTYPE_GET(m)" is different from "M_HASHTYPE_NONE". In the future more hashtypes will be added, for example hashtypes for hardware dedicated flows. "M_HASHTYPE_OPAQUE" indicates that the "m_pkthdr.flowid" value is valid and has no particular type. This change removes the need for an "if" statement in TCP transmit code checking for the presence of a valid flowid value. The "if" statement mentioned above is now a direct variable assignment which is then later checked by the respective network drivers like before. Additional notes: - The SCTP code changes will be committed as a separate patch. - Removal of the "M_FLOWID" flag will also be done separately. - The FreeBSD version has been bumped. MFC after: 1 month Sponsored by: Mellanox Technologies
1288 lines
35 KiB
C
1288 lines
35 KiB
C
/*-
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* Copyright (c) 2010-2011 Juniper Networks, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Portions of this software were developed by Robert N. M. Watson under
|
|
* contract to Juniper Networks, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $
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|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 1982, 1986, 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
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* @(#)in_pcb.c 8.2 (Berkeley) 1/4/94
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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|
|
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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_pcbgroup.h"
|
|
#include "opt_rss.h"
|
|
|
|
#include <sys/param.h>
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|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
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|
#include <sys/mbuf.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/sockio.h>
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|
#include <sys/errno.h>
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|
#include <sys/time.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/jail.h>
|
|
|
|
#include <vm/uma.h>
|
|
|
|
#include <net/if.h>
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|
#include <net/if_var.h>
|
|
#include <net/if_types.h>
|
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#include <net/route.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#include <netinet/in_systm.h>
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#include <netinet/tcp_var.h>
|
|
#include <netinet/ip6.h>
|
|
#include <netinet/ip_var.h>
|
|
|
|
#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 <netinet6/in6_pcb.h>
|
|
#include <netinet6/scope6_var.h>
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|
|
|
static struct inpcb *in6_pcblookup_hash_locked(struct inpcbinfo *,
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struct in6_addr *, u_int, struct in6_addr *, u_int, int, struct ifnet *);
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|
|
int
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in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
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struct ucred *cred)
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{
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struct socket *so = inp->inp_socket;
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
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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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|
INP_WLOCK_ASSERT(inp);
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INP_HASH_WLOCK_ASSERT(pcbinfo);
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|
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|
if (TAILQ_EMPTY(&V_in6_ifaddrhead)) /* XXX broken! */
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return (EADDRNOTAVAIL);
|
|
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)) == 0)
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lookupflags = INPLOOKUP_WILDCARD;
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if (nam == 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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sin6 = (struct sockaddr_in6 *)nam;
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if (nam->sa_len != sizeof(*sin6))
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return (EINVAL);
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/*
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|
* family check.
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*/
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if (nam->sa_family != AF_INET6)
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|
return (EAFNOSUPPORT);
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|
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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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|
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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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|
} else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
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|
struct ifaddr *ifa;
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|
|
|
sin6->sin6_port = 0; /* yech... */
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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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return (EADDRNOTAVAIL);
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|
}
|
|
|
|
/*
|
|
* XXX: bind to an anycast address might accidentally
|
|
* cause sending a packet with anycast source address.
|
|
* We should allow to bind to a deprecated address, since
|
|
* the application dares to use it.
|
|
*/
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|
if (ifa != NULL &&
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|
((struct in6_ifaddr *)ifa)->ia6_flags &
|
|
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
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|
ifa_free(ifa);
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|
return (EADDRNOTAVAIL);
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|
}
|
|
if (ifa != NULL)
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|
ifa_free(ifa);
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|
}
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|
if (lport) {
|
|
struct inpcb *t;
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|
struct tcptw *tw;
|
|
|
|
/* GROSS */
|
|
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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0))
|
|
return (EACCES);
|
|
if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) &&
|
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priv_check_cred(inp->inp_cred,
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PRIV_NETINET_REUSEPORT, 0) != 0) {
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|
t = in6_pcblookup_local(pcbinfo,
|
|
&sin6->sin6_addr, lport,
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|
INPLOOKUP_WILDCARD, cred);
|
|
if (t &&
|
|
((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
|
|
((t->inp_flags & INP_TIMEWAIT) == 0) &&
|
|
(so->so_type != SOCK_STREAM ||
|
|
IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) &&
|
|
(!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
|
|
!IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
|
|
(t->inp_flags2 & INP_REUSEPORT) == 0) &&
|
|
(inp->inp_cred->cr_uid !=
|
|
t->inp_cred->cr_uid))
|
|
return (EADDRINUSE);
|
|
|
|
/*
|
|
* If the socket is a BINDMULTI socket, then
|
|
* the credentials need to match and the
|
|
* original socket also has to have been bound
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|
* with BINDMULTI.
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|
*/
|
|
if (t && (! in_pcbbind_check_bindmulti(inp, t)))
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|
return (EADDRINUSE);
|
|
|
|
#ifdef INET
|
|
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;
|
|
|
|
in6_sin6_2_sin(&sin, sin6);
|
|
t = in_pcblookup_local(pcbinfo,
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sin.sin_addr, lport,
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|
INPLOOKUP_WILDCARD, cred);
|
|
if (t &&
|
|
((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
|
|
((t->inp_flags &
|
|
INP_TIMEWAIT) == 0) &&
|
|
(so->so_type != SOCK_STREAM ||
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|
ntohl(t->inp_faddr.s_addr) ==
|
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INADDR_ANY) &&
|
|
(inp->inp_cred->cr_uid !=
|
|
t->inp_cred->cr_uid))
|
|
return (EADDRINUSE);
|
|
|
|
if (t && (! in_pcbbind_check_bindmulti(inp, t)))
|
|
return (EADDRINUSE);
|
|
}
|
|
#endif
|
|
}
|
|
t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
|
|
lport, lookupflags, cred);
|
|
if (t && (t->inp_flags & INP_TIMEWAIT)) {
|
|
/*
|
|
* XXXRW: If an incpb has had its timewait
|
|
* state recycled, we treat the address as
|
|
* being in use (for now). This is better
|
|
* than a panic, but not desirable.
|
|
*/
|
|
tw = intotw(t);
|
|
if (tw == NULL ||
|
|
(reuseport & tw->tw_so_options) == 0)
|
|
return (EADDRINUSE);
|
|
} else if (t && (reuseport & inp_so_options(t)) == 0) {
|
|
return (EADDRINUSE);
|
|
}
|
|
#ifdef INET
|
|
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
|
|
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
|
|
struct sockaddr_in sin;
|
|
|
|
in6_sin6_2_sin(&sin, sin6);
|
|
t = in_pcblookup_local(pcbinfo, sin.sin_addr,
|
|
lport, lookupflags, cred);
|
|
if (t && t->inp_flags & INP_TIMEWAIT) {
|
|
tw = intotw(t);
|
|
if (tw == NULL)
|
|
return (EADDRINUSE);
|
|
if ((reuseport & tw->tw_so_options) == 0
|
|
&& (ntohl(t->inp_laddr.s_addr) !=
|
|
INADDR_ANY || ((inp->inp_vflag &
|
|
INP_IPV6PROTO) ==
|
|
(t->inp_vflag & INP_IPV6PROTO))))
|
|
return (EADDRINUSE);
|
|
} else if (t &&
|
|
(reuseport & inp_so_options(t)) == 0 &&
|
|
(ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
|
|
(t->inp_vflag & INP_IPV6PROTO) != 0))
|
|
return (EADDRINUSE);
|
|
}
|
|
#endif
|
|
}
|
|
inp->in6p_laddr = sin6->sin6_addr;
|
|
}
|
|
if (lport == 0) {
|
|
if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) {
|
|
/* Undo an address bind that may have occurred. */
|
|
inp->in6p_laddr = in6addr_any;
|
|
return (error);
|
|
}
|
|
} else {
|
|
inp->inp_lport = lport;
|
|
if (in_pcbinshash(inp) != 0) {
|
|
inp->in6p_laddr = in6addr_any;
|
|
inp->inp_lport = 0;
|
|
return (EAGAIN);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Transform old in6_pcbconnect() into an inner subroutine for new
|
|
* in6_pcbconnect(): Do some validity-checking on the remote
|
|
* address (in mbuf 'nam') and then determine local host address
|
|
* (i.e., which interface) to use to access that remote host.
|
|
*
|
|
* This preserves definition of in6_pcbconnect(), while supporting a
|
|
* slightly different version for T/TCP. (This is more than
|
|
* a bit of a kludge, but cleaning up the internal interfaces would
|
|
* have forced minor changes in every protocol).
|
|
*/
|
|
static int
|
|
in6_pcbladdr(register struct inpcb *inp, struct sockaddr *nam,
|
|
struct in6_addr *plocal_addr6)
|
|
{
|
|
register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
|
|
int error = 0;
|
|
struct ifnet *ifp = NULL;
|
|
int scope_ambiguous = 0;
|
|
struct in6_addr in6a;
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */
|
|
|
|
if (nam->sa_len != sizeof (*sin6))
|
|
return (EINVAL);
|
|
if (sin6->sin6_family != AF_INET6)
|
|
return (EAFNOSUPPORT);
|
|
if (sin6->sin6_port == 0)
|
|
return (EADDRNOTAVAIL);
|
|
|
|
if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone)
|
|
scope_ambiguous = 1;
|
|
if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
|
|
return(error);
|
|
|
|
if (!TAILQ_EMPTY(&V_in6_ifaddrhead)) {
|
|
/*
|
|
* If the destination address is UNSPECIFIED addr,
|
|
* use the loopback addr, e.g ::1.
|
|
*/
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
|
|
sin6->sin6_addr = in6addr_loopback;
|
|
}
|
|
if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0)
|
|
return (error);
|
|
|
|
error = in6_selectsrc(sin6, inp->in6p_outputopts,
|
|
inp, NULL, inp->inp_cred, &ifp, &in6a);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (ifp && scope_ambiguous &&
|
|
(error = in6_setscope(&sin6->sin6_addr, ifp, NULL)) != 0) {
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* Do not update this earlier, in case we return with an error.
|
|
*
|
|
* XXX: this in6_selectsrc result might replace the bound local
|
|
* address with the address specified by setsockopt(IPV6_PKTINFO).
|
|
* Is it the intended behavior?
|
|
*/
|
|
*plocal_addr6 = in6a;
|
|
|
|
/*
|
|
* Don't do pcblookup call here; return interface in
|
|
* plocal_addr6
|
|
* and exit to caller, that will do the lookup.
|
|
*/
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Outer subroutine:
|
|
* Connect from a socket to a specified address.
|
|
* Both address and port must be specified in argument sin.
|
|
* If don't have a local address for this socket yet,
|
|
* then pick one.
|
|
*/
|
|
int
|
|
in6_pcbconnect_mbuf(register struct inpcb *inp, struct sockaddr *nam,
|
|
struct ucred *cred, struct mbuf *m)
|
|
{
|
|
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
|
|
register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
|
|
struct in6_addr addr6;
|
|
int error;
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
INP_HASH_WLOCK_ASSERT(pcbinfo);
|
|
|
|
/*
|
|
* Call inner routine, to assign local interface address.
|
|
* in6_pcbladdr() may automatically fill in sin6_scope_id.
|
|
*/
|
|
if ((error = in6_pcbladdr(inp, nam, &addr6)) != 0)
|
|
return (error);
|
|
|
|
if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr,
|
|
sin6->sin6_port,
|
|
IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)
|
|
? &addr6 : &inp->in6p_laddr,
|
|
inp->inp_lport, 0, NULL) != NULL) {
|
|
return (EADDRINUSE);
|
|
}
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
|
|
if (inp->inp_lport == 0) {
|
|
error = in6_pcbbind(inp, (struct sockaddr *)0, cred);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
inp->in6p_laddr = addr6;
|
|
}
|
|
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);
|
|
|
|
in_pcbrehash_mbuf(inp, m);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
in6_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
|
|
{
|
|
|
|
return (in6_pcbconnect_mbuf(inp, nam, cred, NULL));
|
|
}
|
|
|
|
void
|
|
in6_pcbdisconnect(struct inpcb *inp)
|
|
{
|
|
|
|
INP_WLOCK_ASSERT(inp);
|
|
INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
|
|
|
|
bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr));
|
|
inp->inp_fport = 0;
|
|
/* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
|
|
inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
|
|
in_pcbrehash(inp);
|
|
}
|
|
|
|
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)
|
|
{
|
|
register 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.
|
|
*/
|
|
void
|
|
in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr *dst,
|
|
u_int fport_arg, const struct sockaddr *src, u_int lport_arg,
|
|
int cmd, void *cmdarg,
|
|
struct inpcb *(*notify)(struct inpcb *, int))
|
|
{
|
|
struct inpcb *inp, *inp_temp;
|
|
struct sockaddr_in6 sa6_src, *sa6_dst;
|
|
u_short fport = fport_arg, lport = lport_arg;
|
|
u_int32_t flowinfo;
|
|
int errno;
|
|
|
|
if ((unsigned)cmd >= PRC_NCMDS || dst->sa_family != AF_INET6)
|
|
return;
|
|
|
|
sa6_dst = (struct sockaddr_in6 *)dst;
|
|
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 : *(const struct sockaddr_in6 *)src;
|
|
flowinfo = sa6_src.sin6_flowinfo;
|
|
|
|
/*
|
|
* Redirects go to all references to the destination,
|
|
* and use in6_rtchange to invalidate the route cache.
|
|
* Dead host indications: also use in6_rtchange to invalidate
|
|
* the cache, and deliver the error to all the sockets.
|
|
* Otherwise, if we have knowledge of the local port and address,
|
|
* deliver only to that socket.
|
|
*/
|
|
if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) {
|
|
fport = 0;
|
|
lport = 0;
|
|
bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr));
|
|
|
|
if (cmd != PRC_HOSTDEAD)
|
|
notify = in6_rtchange;
|
|
}
|
|
errno = inet6ctlerrmap[cmd];
|
|
INP_INFO_WLOCK(pcbinfo);
|
|
LIST_FOREACH_SAFE(inp, pcbinfo->ipi_listhead, inp_list, inp_temp) {
|
|
INP_WLOCK(inp);
|
|
if ((inp->inp_vflag & INP_IPV6) == 0) {
|
|
INP_WUNLOCK(inp);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If the error designates a new path MTU for a destination
|
|
* and the application (associated with this socket) wanted to
|
|
* know the value, notify. Note that we notify for all
|
|
* disconnected sockets if the corresponding application
|
|
* wanted. This is because some UDP applications keep sending
|
|
* sockets disconnected.
|
|
* XXX: should we avoid to notify the value to TCP sockets?
|
|
*/
|
|
if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 &&
|
|
(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
|
|
IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) {
|
|
ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst,
|
|
(u_int32_t *)cmdarg);
|
|
}
|
|
|
|
/*
|
|
* Detect if we should notify the error. If no source and
|
|
* destination ports are specifed, 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)) {
|
|
INP_WUNLOCK(inp);
|
|
continue;
|
|
}
|
|
|
|
do_notify:
|
|
if (notify) {
|
|
if ((*notify)(inp, errno))
|
|
INP_WUNLOCK(inp);
|
|
} else
|
|
INP_WUNLOCK(inp);
|
|
}
|
|
INP_INFO_WUNLOCK(pcbinfo);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
register struct inpcb *inp;
|
|
int matchwild = 3, wildcard;
|
|
|
|
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
|
|
INP_HASH_WLOCK_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_hashbase[INP_PCBHASH(
|
|
INP6_PCBHASHKEY(&in6addr_any), lport, 0,
|
|
pcbinfo->ipi_hashmask)];
|
|
LIST_FOREACH(inp, head, inp_hash) {
|
|
/* 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 (cred == NULL ||
|
|
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)];
|
|
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.
|
|
*/
|
|
LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
|
|
wildcard = 0;
|
|
if (cred != NULL &&
|
|
!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);
|
|
}
|
|
}
|
|
|
|
void
|
|
in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
|
|
{
|
|
struct inpcb *in6p;
|
|
struct ip6_moptions *im6o;
|
|
int i, gap;
|
|
|
|
INP_INFO_RLOCK(pcbinfo);
|
|
LIST_FOREACH(in6p, pcbinfo->ipi_listhead, inp_list) {
|
|
INP_WLOCK(in6p);
|
|
im6o = in6p->in6p_moptions;
|
|
if ((in6p->inp_vflag & INP_IPV6) && im6o != NULL) {
|
|
/*
|
|
* 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.
|
|
*/
|
|
gap = 0;
|
|
for (i = 0; i < im6o->im6o_num_memberships; i++) {
|
|
if (im6o->im6o_membership[i]->in6m_ifp ==
|
|
ifp) {
|
|
in6_mc_leave(im6o->im6o_membership[i],
|
|
NULL);
|
|
gap++;
|
|
} else if (gap != 0) {
|
|
im6o->im6o_membership[i - gap] =
|
|
im6o->im6o_membership[i];
|
|
}
|
|
}
|
|
im6o->im6o_num_memberships -= gap;
|
|
}
|
|
INP_WUNLOCK(in6p);
|
|
}
|
|
INP_INFO_RUNLOCK(pcbinfo);
|
|
}
|
|
|
|
/*
|
|
* 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 *in6p)
|
|
{
|
|
|
|
/*
|
|
* We don't store route pointers in the routing table anymore
|
|
*/
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* After a routing change, flush old routing
|
|
* and allocate a (hopefully) better one.
|
|
*/
|
|
struct inpcb *
|
|
in6_rtchange(struct inpcb *inp, int errno)
|
|
{
|
|
/*
|
|
* We don't store route pointers in the routing table anymore
|
|
*/
|
|
return inp;
|
|
}
|
|
|
|
#ifdef PCBGROUP
|
|
/*
|
|
* Lookup PCB in hash list, using pcbgroup tables.
|
|
*/
|
|
static struct inpcb *
|
|
in6_pcblookup_group(struct inpcbinfo *pcbinfo, struct inpcbgroup *pcbgroup,
|
|
struct in6_addr *faddr, u_int fport_arg, struct in6_addr *laddr,
|
|
u_int lport_arg, int lookupflags, struct ifnet *ifp)
|
|
{
|
|
struct inpcbhead *head;
|
|
struct inpcb *inp, *tmpinp;
|
|
u_short fport = fport_arg, lport = lport_arg;
|
|
|
|
/*
|
|
* First look for an exact match.
|
|
*/
|
|
tmpinp = NULL;
|
|
INP_GROUP_LOCK(pcbgroup);
|
|
head = &pcbgroup->ipg_hashbase[INP_PCBHASH(
|
|
INP6_PCBHASHKEY(faddr), lport, fport, pcbgroup->ipg_hashmask)];
|
|
LIST_FOREACH(inp, head, inp_pcbgrouphash) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
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) {
|
|
/*
|
|
* XXX We should be able to directly return
|
|
* the inp here, without any checks.
|
|
* Well unless both bound with SO_REUSEPORT?
|
|
*/
|
|
if (prison_flag(inp->inp_cred, PR_IP6))
|
|
goto found;
|
|
if (tmpinp == NULL)
|
|
tmpinp = inp;
|
|
}
|
|
}
|
|
if (tmpinp != NULL) {
|
|
inp = tmpinp;
|
|
goto found;
|
|
}
|
|
|
|
/*
|
|
* Then look for a wildcard match in the pcbgroup.
|
|
*/
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
|
|
struct inpcb *local_wild = NULL, *local_exact = NULL;
|
|
struct inpcb *jail_wild = NULL;
|
|
int injail;
|
|
|
|
/*
|
|
* 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 = &pcbgroup->ipg_hashbase[
|
|
INP_PCBHASH(INADDR_ANY, lport, 0, pcbgroup->ipg_hashmask)];
|
|
LIST_FOREACH(inp, head, inp_pcbgrouphash) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
|
|
inp->inp_lport != lport) {
|
|
continue;
|
|
}
|
|
|
|
injail = prison_flag(inp->inp_cred, PR_IP6);
|
|
if (injail) {
|
|
if (prison_check_ip6(inp->inp_cred,
|
|
laddr) != 0)
|
|
continue;
|
|
} else {
|
|
if (local_exact != NULL)
|
|
continue;
|
|
}
|
|
|
|
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) {
|
|
if (injail)
|
|
goto found;
|
|
else
|
|
local_exact = inp;
|
|
} else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
|
|
if (injail)
|
|
jail_wild = inp;
|
|
else
|
|
local_wild = inp;
|
|
}
|
|
} /* LIST_FOREACH */
|
|
|
|
inp = jail_wild;
|
|
if (inp == NULL)
|
|
inp = jail_wild;
|
|
if (inp == NULL)
|
|
inp = local_exact;
|
|
if (inp == NULL)
|
|
inp = local_wild;
|
|
if (inp != NULL)
|
|
goto found;
|
|
}
|
|
|
|
/*
|
|
* Then look for a wildcard match, if requested.
|
|
*/
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
|
|
struct inpcb *local_wild = NULL, *local_exact = NULL;
|
|
struct inpcb *jail_wild = NULL;
|
|
int injail;
|
|
|
|
/*
|
|
* 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_wildbase[INP_PCBHASH(
|
|
INP6_PCBHASHKEY(&in6addr_any), lport, 0,
|
|
pcbinfo->ipi_wildmask)];
|
|
LIST_FOREACH(inp, head, inp_pcbgroup_wild) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
|
|
inp->inp_lport != lport) {
|
|
continue;
|
|
}
|
|
|
|
injail = prison_flag(inp->inp_cred, PR_IP6);
|
|
if (injail) {
|
|
if (prison_check_ip6(inp->inp_cred,
|
|
laddr) != 0)
|
|
continue;
|
|
} else {
|
|
if (local_exact != NULL)
|
|
continue;
|
|
}
|
|
|
|
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) {
|
|
if (injail)
|
|
goto found;
|
|
else
|
|
local_exact = inp;
|
|
} else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
|
|
if (injail)
|
|
jail_wild = inp;
|
|
else
|
|
local_wild = inp;
|
|
}
|
|
} /* LIST_FOREACH */
|
|
|
|
inp = jail_wild;
|
|
if (inp == NULL)
|
|
inp = jail_wild;
|
|
if (inp == NULL)
|
|
inp = local_exact;
|
|
if (inp == NULL)
|
|
inp = local_wild;
|
|
if (inp != NULL)
|
|
goto found;
|
|
} /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
|
|
INP_GROUP_UNLOCK(pcbgroup);
|
|
return (NULL);
|
|
|
|
found:
|
|
in_pcbref(inp);
|
|
INP_GROUP_UNLOCK(pcbgroup);
|
|
if (lookupflags & INPLOOKUP_WLOCKPCB) {
|
|
INP_WLOCK(inp);
|
|
if (in_pcbrele_wlocked(inp))
|
|
return (NULL);
|
|
} else if (lookupflags & INPLOOKUP_RLOCKPCB) {
|
|
INP_RLOCK(inp);
|
|
if (in_pcbrele_rlocked(inp))
|
|
return (NULL);
|
|
} else
|
|
panic("%s: locking buf", __func__);
|
|
return (inp);
|
|
}
|
|
#endif /* PCBGROUP */
|
|
|
|
/*
|
|
* Lookup PCB in hash list.
|
|
*/
|
|
static struct inpcb *
|
|
in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
|
|
u_int fport_arg, struct in6_addr *laddr, u_int lport_arg,
|
|
int lookupflags, struct ifnet *ifp)
|
|
{
|
|
struct inpcbhead *head;
|
|
struct inpcb *inp, *tmpinp;
|
|
u_short fport = fport_arg, lport = lport_arg;
|
|
|
|
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
|
|
INP_HASH_LOCK_ASSERT(pcbinfo);
|
|
|
|
/*
|
|
* First look for an exact match.
|
|
*/
|
|
tmpinp = NULL;
|
|
head = &pcbinfo->ipi_hashbase[INP_PCBHASH(
|
|
INP6_PCBHASHKEY(faddr), lport, fport, pcbinfo->ipi_hashmask)];
|
|
LIST_FOREACH(inp, head, inp_hash) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
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) {
|
|
/*
|
|
* XXX We should be able to directly return
|
|
* the inp here, without any checks.
|
|
* Well unless both bound with SO_REUSEPORT?
|
|
*/
|
|
if (prison_flag(inp->inp_cred, PR_IP6))
|
|
return (inp);
|
|
if (tmpinp == NULL)
|
|
tmpinp = inp;
|
|
}
|
|
}
|
|
if (tmpinp != NULL)
|
|
return (tmpinp);
|
|
|
|
/*
|
|
* Then look for a wildcard match, if requested.
|
|
*/
|
|
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
|
|
struct inpcb *local_wild = NULL, *local_exact = NULL;
|
|
struct inpcb *jail_wild = NULL;
|
|
int injail;
|
|
|
|
/*
|
|
* 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_hashbase[INP_PCBHASH(
|
|
INP6_PCBHASHKEY(&in6addr_any), lport, 0,
|
|
pcbinfo->ipi_hashmask)];
|
|
LIST_FOREACH(inp, head, inp_hash) {
|
|
/* XXX inp locking */
|
|
if ((inp->inp_vflag & INP_IPV6) == 0)
|
|
continue;
|
|
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
|
|
inp->inp_lport != lport) {
|
|
continue;
|
|
}
|
|
|
|
injail = prison_flag(inp->inp_cred, PR_IP6);
|
|
if (injail) {
|
|
if (prison_check_ip6(inp->inp_cred,
|
|
laddr) != 0)
|
|
continue;
|
|
} else {
|
|
if (local_exact != NULL)
|
|
continue;
|
|
}
|
|
|
|
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) {
|
|
if (injail)
|
|
return (inp);
|
|
else
|
|
local_exact = inp;
|
|
} else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
|
|
if (injail)
|
|
jail_wild = inp;
|
|
else
|
|
local_wild = inp;
|
|
}
|
|
} /* LIST_FOREACH */
|
|
|
|
if (jail_wild != NULL)
|
|
return (jail_wild);
|
|
if (local_exact != NULL)
|
|
return (local_exact);
|
|
if (local_wild != NULL)
|
|
return (local_wild);
|
|
} /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
|
|
|
|
/*
|
|
* Not found.
|
|
*/
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Lookup PCB in hash list, using pcbinfo tables. This variation locks the
|
|
* hash list lock, and will return the inpcb locked (i.e., requires
|
|
* INPLOOKUP_LOCKPCB).
|
|
*/
|
|
static struct inpcb *
|
|
in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
|
|
u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
|
|
struct ifnet *ifp)
|
|
{
|
|
struct inpcb *inp;
|
|
|
|
INP_HASH_RLOCK(pcbinfo);
|
|
inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport,
|
|
(lookupflags & ~(INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)), ifp);
|
|
if (inp != NULL) {
|
|
in_pcbref(inp);
|
|
INP_HASH_RUNLOCK(pcbinfo);
|
|
if (lookupflags & INPLOOKUP_WLOCKPCB) {
|
|
INP_WLOCK(inp);
|
|
if (in_pcbrele_wlocked(inp))
|
|
return (NULL);
|
|
} else if (lookupflags & INPLOOKUP_RLOCKPCB) {
|
|
INP_RLOCK(inp);
|
|
if (in_pcbrele_rlocked(inp))
|
|
return (NULL);
|
|
} else
|
|
panic("%s: locking bug", __func__);
|
|
} else
|
|
INP_HASH_RUNLOCK(pcbinfo);
|
|
return (inp);
|
|
}
|
|
|
|
/*
|
|
* Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf
|
|
* from which a pre-calculated hash value may be extracted.
|
|
*
|
|
* Possibly more of this logic should be in in6_pcbgroup.c.
|
|
*/
|
|
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)
|
|
{
|
|
#if defined(PCBGROUP) && !defined(RSS)
|
|
struct inpcbgroup *pcbgroup;
|
|
#endif
|
|
|
|
KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
|
|
("%s: LOCKPCB not set", __func__));
|
|
|
|
/*
|
|
* When not using RSS, use connection groups in preference to the
|
|
* reservation table when looking up 4-tuples. When using RSS, just
|
|
* use the reservation table, due to the cost of the Toeplitz hash
|
|
* in software.
|
|
*
|
|
* XXXRW: This policy belongs in the pcbgroup code, as in principle
|
|
* we could be doing RSS with a non-Toeplitz hash that is affordable
|
|
* in software.
|
|
*/
|
|
#if defined(PCBGROUP) && !defined(RSS)
|
|
if (in_pcbgroup_enabled(pcbinfo)) {
|
|
pcbgroup = in6_pcbgroup_bytuple(pcbinfo, laddr, lport, faddr,
|
|
fport);
|
|
return (in6_pcblookup_group(pcbinfo, pcbgroup, faddr, fport,
|
|
laddr, lport, lookupflags, ifp));
|
|
}
|
|
#endif
|
|
return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags, ifp));
|
|
}
|
|
|
|
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, struct mbuf *m)
|
|
{
|
|
#ifdef PCBGROUP
|
|
struct inpcbgroup *pcbgroup;
|
|
#endif
|
|
|
|
KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
|
|
("%s: invalid lookup flags %d", __func__, lookupflags));
|
|
KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
|
|
("%s: LOCKPCB not set", __func__));
|
|
|
|
#ifdef PCBGROUP
|
|
/*
|
|
* If we can use a hardware-generated hash to look up the connection
|
|
* group, use that connection group to find the inpcb. Otherwise
|
|
* fall back on a software hash -- or the reservation table if we're
|
|
* using RSS.
|
|
*
|
|
* XXXRW: As above, that policy belongs in the pcbgroup code.
|
|
*/
|
|
if (in_pcbgroup_enabled(pcbinfo) &&
|
|
M_HASHTYPE_TEST(m, M_HASHTYPE_NONE) == 0) {
|
|
pcbgroup = in6_pcbgroup_byhash(pcbinfo, M_HASHTYPE_GET(m),
|
|
m->m_pkthdr.flowid);
|
|
if (pcbgroup != NULL)
|
|
return (in6_pcblookup_group(pcbinfo, pcbgroup, faddr,
|
|
fport, laddr, lport, lookupflags, ifp));
|
|
#ifndef RSS
|
|
pcbgroup = in6_pcbgroup_bytuple(pcbinfo, laddr, lport, faddr,
|
|
fport);
|
|
return (in6_pcblookup_group(pcbinfo, pcbgroup, faddr, fport,
|
|
laddr, lport, lookupflags, ifp));
|
|
#endif
|
|
}
|
|
#endif
|
|
return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
|
|
lookupflags, ifp));
|
|
}
|
|
|
|
void
|
|
init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m)
|
|
{
|
|
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 = ip->ip6_src;
|
|
|
|
(void)sa6_recoverscope(sin6); /* XXX: should catch errors... */
|
|
|
|
return;
|
|
}
|