1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 1982, 1986, 1988, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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*
|
1995-09-21 19:59:43 +00:00
|
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|
* @(#)raw_ip.c 8.7 (Berkeley) 5/15/95
|
1999-08-28 01:08:13 +00:00
|
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|
* $FreeBSD$
|
1994-05-24 10:09:53 +00:00
|
|
|
*/
|
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|
|
|
1999-12-22 19:13:38 +00:00
|
|
|
#include "opt_inet6.h"
|
|
|
|
#include "opt_ipsec.h"
|
2001-06-01 10:02:28 +00:00
|
|
|
#include "opt_random_ip_id.h"
|
1999-12-22 19:13:38 +00:00
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/param.h>
|
1997-02-18 20:46:36 +00:00
|
|
|
#include <sys/systm.h>
|
|
|
|
#include <sys/kernel.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/malloc.h>
|
|
|
|
#include <sys/mbuf.h>
|
2001-10-05 07:06:32 +00:00
|
|
|
#include <sys/proc.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/protosw.h>
|
1997-02-18 20:46:36 +00:00
|
|
|
#include <sys/socket.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/socketvar.h>
|
1997-02-18 20:46:36 +00:00
|
|
|
#include <sys/sysctl.h>
|
1998-03-28 10:18:26 +00:00
|
|
|
|
1998-03-24 18:06:34 +00:00
|
|
|
#include <vm/vm_zone.h>
|
1994-05-24 10:09:53 +00:00
|
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|
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|
|
|
#include <net/if.h>
|
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|
|
#include <net/route.h>
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|
1996-07-24 18:46:19 +00:00
|
|
|
#define _IP_VHL
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <netinet/in.h>
|
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|
|
#include <netinet/in_systm.h>
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|
|
#include <netinet/ip.h>
|
1995-10-21 02:12:20 +00:00
|
|
|
#include <netinet/in_pcb.h>
|
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|
|
#include <netinet/in_var.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <netinet/ip_var.h>
|
|
|
|
#include <netinet/ip_mroute.h>
|
|
|
|
|
1994-10-28 15:09:49 +00:00
|
|
|
#include <netinet/ip_fw.h>
|
2001-10-05 05:45:27 +00:00
|
|
|
#include <netinet/ip_dummynet.h>
|
1994-10-28 15:09:49 +00:00
|
|
|
|
1999-12-22 19:13:38 +00:00
|
|
|
#ifdef IPSEC
|
|
|
|
#include <netinet6/ipsec.h>
|
|
|
|
#endif /*IPSEC*/
|
|
|
|
|
1999-11-22 02:45:11 +00:00
|
|
|
struct inpcbhead ripcb;
|
|
|
|
struct inpcbinfo ripcbinfo;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2001-10-05 05:45:27 +00:00
|
|
|
/* control hooks for ipfw and dummynet */
|
|
|
|
ip_fw_ctl_t *ip_fw_ctl_ptr;
|
|
|
|
ip_dn_ctl_t *ip_dn_ctl_ptr;
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Nominal space allocated to a raw ip socket.
|
|
|
|
*/
|
|
|
|
#define RIPSNDQ 8192
|
|
|
|
#define RIPRCVQ 8192
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Raw interface to IP protocol.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize raw connection block q.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
rip_init()
|
|
|
|
{
|
1995-04-09 01:29:31 +00:00
|
|
|
LIST_INIT(&ripcb);
|
|
|
|
ripcbinfo.listhead = &ripcb;
|
|
|
|
/*
|
|
|
|
* XXX We don't use the hash list for raw IP, but it's easier
|
|
|
|
* to allocate a one entry hash list than it is to check all
|
|
|
|
* over the place for hashbase == NULL.
|
|
|
|
*/
|
1997-03-03 09:23:37 +00:00
|
|
|
ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask);
|
Improved connection establishment performance by doing local port lookups via
a hashed port list. In the new scheme, in_pcblookup() goes away and is
replaced by a new routine, in_pcblookup_local() for doing the local port
check. Note that this implementation is space inefficient in that the PCB
struct is now too large to fit into 128 bytes. I might deal with this in the
future by using the new zone allocator, but I wanted these changes to be
extensively tested in their current form first.
Also:
1) Fixed off-by-one errors in the port lookup loops in in_pcbbind().
2) Got rid of some unneeded rehashing. Adding a new routine, in_pcbinshash()
to do the initialial hash insertion.
3) Renamed in_pcblookuphash() to in_pcblookup_hash() for easier readability.
4) Added a new routine, in_pcbremlists() to remove the PCB from the various
hash lists.
5) Added/deleted comments where appropriate.
6) Removed unnecessary splnet() locking. In general, the PCB functions should
be called at splnet()...there are unfortunately a few exceptions, however.
7) Reorganized a few structs for better cache line behavior.
8) Killed my TCP_ACK_HACK kludge. It may come back in a different form in
the future, however.
These changes have been tested on wcarchive for more than a month. In tests
done here, connection establishment overhead is reduced by more than 50
times, thus getting rid of one of the major networking scalability problems.
Still to do: make tcp_fastimo/tcp_slowtimo scale well for systems with a
large number of connections. tcp_fastimo is easy; tcp_slowtimo is difficult.
WARNING: Anything that knows about inpcb and tcpcb structs will have to be
recompiled; at the very least, this includes netstat(1).
1998-01-27 09:15:13 +00:00
|
|
|
ripcbinfo.porthashbase = hashinit(1, M_PCB, &ripcbinfo.porthashmask);
|
1998-03-24 18:06:34 +00:00
|
|
|
ripcbinfo.ipi_zone = zinit("ripcb", sizeof(struct inpcb),
|
1998-05-15 20:11:40 +00:00
|
|
|
maxsockets, ZONE_INTERRUPT, 0);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
1995-12-09 20:43:53 +00:00
|
|
|
static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Setup generic address and protocol structures
|
|
|
|
* for raw_input routine, then pass them along with
|
|
|
|
* mbuf chain.
|
|
|
|
*/
|
|
|
|
void
|
2001-09-03 20:03:55 +00:00
|
|
|
rip_input(m, off)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct mbuf *m;
|
2001-09-03 20:03:55 +00:00
|
|
|
int off;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
|
|
|
register struct ip *ip = mtod(m, struct ip *);
|
|
|
|
register struct inpcb *inp;
|
1996-11-11 04:56:32 +00:00
|
|
|
struct inpcb *last = 0;
|
|
|
|
struct mbuf *opts = 0;
|
2001-09-03 20:03:55 +00:00
|
|
|
int proto = ip->ip_p;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
ripsrc.sin_addr = ip->ip_src;
|
1999-12-22 19:13:38 +00:00
|
|
|
LIST_FOREACH(inp, &ripcb, inp_list) {
|
|
|
|
#ifdef INET6
|
|
|
|
if ((inp->inp_vflag & INP_IPV4) == 0)
|
|
|
|
continue;
|
|
|
|
#endif
|
|
|
|
if (inp->inp_ip_p && inp->inp_ip_p != proto)
|
1994-05-24 10:09:53 +00:00
|
|
|
continue;
|
|
|
|
if (inp->inp_laddr.s_addr &&
|
1995-03-16 16:25:55 +00:00
|
|
|
inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
|
1994-05-24 10:09:53 +00:00
|
|
|
continue;
|
|
|
|
if (inp->inp_faddr.s_addr &&
|
1995-03-16 16:25:55 +00:00
|
|
|
inp->inp_faddr.s_addr != ip->ip_src.s_addr)
|
1994-05-24 10:09:53 +00:00
|
|
|
continue;
|
|
|
|
if (last) {
|
1994-10-02 17:48:58 +00:00
|
|
|
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
|
2001-06-11 12:39:29 +00:00
|
|
|
|
|
|
|
#ifdef IPSEC
|
|
|
|
/* check AH/ESP integrity. */
|
|
|
|
if (n && ipsec4_in_reject_so(n, last->inp_socket)) {
|
|
|
|
m_freem(n);
|
|
|
|
ipsecstat.in_polvio++;
|
|
|
|
/* do not inject data to pcb */
|
|
|
|
} else
|
|
|
|
#endif /*IPSEC*/
|
1994-10-02 17:48:58 +00:00
|
|
|
if (n) {
|
1996-11-11 04:56:32 +00:00
|
|
|
if (last->inp_flags & INP_CONTROLOPTS ||
|
|
|
|
last->inp_socket->so_options & SO_TIMESTAMP)
|
|
|
|
ip_savecontrol(last, &opts, ip, n);
|
|
|
|
if (sbappendaddr(&last->inp_socket->so_rcv,
|
1994-10-02 17:48:58 +00:00
|
|
|
(struct sockaddr *)&ripsrc, n,
|
1996-11-11 04:56:32 +00:00
|
|
|
opts) == 0) {
|
1994-05-24 10:09:53 +00:00
|
|
|
/* should notify about lost packet */
|
|
|
|
m_freem(n);
|
1996-11-11 04:56:32 +00:00
|
|
|
if (opts)
|
|
|
|
m_freem(opts);
|
|
|
|
} else
|
|
|
|
sorwakeup(last->inp_socket);
|
|
|
|
opts = 0;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
}
|
1996-11-11 04:56:32 +00:00
|
|
|
last = inp;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
2001-06-11 12:39:29 +00:00
|
|
|
#ifdef IPSEC
|
|
|
|
/* check AH/ESP integrity. */
|
|
|
|
if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
|
|
|
|
m_freem(m);
|
|
|
|
ipsecstat.in_polvio++;
|
|
|
|
ipstat.ips_delivered--;
|
|
|
|
/* do not inject data to pcb */
|
|
|
|
} else
|
|
|
|
#endif /*IPSEC*/
|
1994-05-24 10:09:53 +00:00
|
|
|
if (last) {
|
1996-11-11 04:56:32 +00:00
|
|
|
if (last->inp_flags & INP_CONTROLOPTS ||
|
|
|
|
last->inp_socket->so_options & SO_TIMESTAMP)
|
|
|
|
ip_savecontrol(last, &opts, ip, m);
|
|
|
|
if (sbappendaddr(&last->inp_socket->so_rcv,
|
|
|
|
(struct sockaddr *)&ripsrc, m, opts) == 0) {
|
1994-05-24 10:09:53 +00:00
|
|
|
m_freem(m);
|
1996-11-11 04:56:32 +00:00
|
|
|
if (opts)
|
|
|
|
m_freem(opts);
|
|
|
|
} else
|
|
|
|
sorwakeup(last->inp_socket);
|
1994-05-24 10:09:53 +00:00
|
|
|
} else {
|
|
|
|
m_freem(m);
|
2001-06-11 12:39:29 +00:00
|
|
|
ipstat.ips_noproto++;
|
|
|
|
ipstat.ips_delivered--;
|
|
|
|
}
|
1995-03-16 16:25:55 +00:00
|
|
|
}
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Generate IP header and pass packet to ip_output.
|
|
|
|
* Tack on options user may have setup with control call.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
rip_output(m, so, dst)
|
1999-12-19 01:55:37 +00:00
|
|
|
struct mbuf *m;
|
1994-05-24 10:09:53 +00:00
|
|
|
struct socket *so;
|
|
|
|
u_long dst;
|
|
|
|
{
|
|
|
|
register struct ip *ip;
|
|
|
|
register struct inpcb *inp = sotoinpcb(so);
|
|
|
|
int flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the user handed us a complete IP packet, use it.
|
|
|
|
* Otherwise, allocate an mbuf for a header and fill it in.
|
|
|
|
*/
|
|
|
|
if ((inp->inp_flags & INP_HDRINCL) == 0) {
|
1996-10-25 17:57:53 +00:00
|
|
|
if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {
|
|
|
|
m_freem(m);
|
|
|
|
return(EMSGSIZE);
|
|
|
|
}
|
2000-12-21 21:44:31 +00:00
|
|
|
M_PREPEND(m, sizeof(struct ip), M_TRYWAIT);
|
1994-05-24 10:09:53 +00:00
|
|
|
ip = mtod(m, struct ip *);
|
2001-03-09 12:22:51 +00:00
|
|
|
ip->ip_tos = inp->inp_ip_tos;
|
1994-05-24 10:09:53 +00:00
|
|
|
ip->ip_off = 0;
|
1997-04-03 05:14:45 +00:00
|
|
|
ip->ip_p = inp->inp_ip_p;
|
1994-05-24 10:09:53 +00:00
|
|
|
ip->ip_len = m->m_pkthdr.len;
|
|
|
|
ip->ip_src = inp->inp_laddr;
|
|
|
|
ip->ip_dst.s_addr = dst;
|
2001-03-09 12:22:51 +00:00
|
|
|
ip->ip_ttl = inp->inp_ip_ttl;
|
1994-05-24 10:09:53 +00:00
|
|
|
} else {
|
1996-10-25 17:57:53 +00:00
|
|
|
if (m->m_pkthdr.len > IP_MAXPACKET) {
|
|
|
|
m_freem(m);
|
|
|
|
return(EMSGSIZE);
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
ip = mtod(m, struct ip *);
|
1996-03-13 08:02:45 +00:00
|
|
|
/* don't allow both user specified and setsockopt options,
|
|
|
|
and don't allow packet length sizes that will crash */
|
1999-11-22 02:45:11 +00:00
|
|
|
if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2))
|
1996-07-24 18:46:19 +00:00
|
|
|
&& inp->inp_options)
|
1997-05-22 20:52:56 +00:00
|
|
|
|| (ip->ip_len > m->m_pkthdr.len)
|
|
|
|
|| (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) {
|
1996-03-13 08:02:45 +00:00
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
if (ip->ip_id == 0)
|
2001-06-01 10:02:28 +00:00
|
|
|
#ifdef RANDOM_IP_ID
|
|
|
|
ip->ip_id = ip_randomid();
|
|
|
|
#else
|
2000-09-14 14:42:04 +00:00
|
|
|
ip->ip_id = htons(ip_id++);
|
2001-06-01 10:02:28 +00:00
|
|
|
#endif
|
1994-05-24 10:09:53 +00:00
|
|
|
/* XXX prevent ip_output from overwriting header fields */
|
|
|
|
flags |= IP_RAWOUTPUT;
|
|
|
|
ipstat.ips_rawout++;
|
|
|
|
}
|
1999-12-22 19:13:38 +00:00
|
|
|
|
|
|
|
#ifdef IPSEC
|
2001-06-11 12:39:29 +00:00
|
|
|
if (ipsec_setsocket(m, so) != 0) {
|
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
1999-12-22 19:13:38 +00:00
|
|
|
#endif /*IPSEC*/
|
|
|
|
|
2000-07-04 16:35:15 +00:00
|
|
|
return (ip_output(m, inp->inp_options, &inp->inp_route, flags,
|
1996-03-13 08:02:45 +00:00
|
|
|
inp->inp_moptions));
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Raw IP socket option processing.
|
|
|
|
*/
|
|
|
|
int
|
1998-08-23 03:07:17 +00:00
|
|
|
rip_ctloutput(so, sopt)
|
1994-05-24 10:09:53 +00:00
|
|
|
struct socket *so;
|
1998-08-23 03:07:17 +00:00
|
|
|
struct sockopt *sopt;
|
1994-05-24 10:09:53 +00:00
|
|
|
{
|
1998-08-23 03:07:17 +00:00
|
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
|
|
int error, optval;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
if (sopt->sopt_level != IPPROTO_IP)
|
1994-05-24 10:09:53 +00:00
|
|
|
return (EINVAL);
|
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
error = 0;
|
|
|
|
|
|
|
|
switch (sopt->sopt_dir) {
|
|
|
|
case SOPT_GET:
|
|
|
|
switch (sopt->sopt_name) {
|
|
|
|
case IP_HDRINCL:
|
|
|
|
optval = inp->inp_flags & INP_HDRINCL;
|
|
|
|
error = sooptcopyout(sopt, &optval, sizeof optval);
|
|
|
|
break;
|
|
|
|
|
2001-11-04 22:56:25 +00:00
|
|
|
case IP_FW_ADD: /* ADD actually returns the body... */
|
1998-08-23 03:07:17 +00:00
|
|
|
case IP_FW_GET:
|
2001-11-04 22:56:25 +00:00
|
|
|
if (IPFW_LOADED)
|
1998-08-23 03:07:17 +00:00
|
|
|
error = ip_fw_ctl_ptr(sopt);
|
2001-11-04 22:56:25 +00:00
|
|
|
else
|
|
|
|
error = ENOPROTOOPT;
|
1998-08-23 03:07:17 +00:00
|
|
|
break;
|
|
|
|
|
1998-12-14 18:09:13 +00:00
|
|
|
case IP_DUMMYNET_GET:
|
2001-11-04 22:56:25 +00:00
|
|
|
if (DUMMYNET_LOADED)
|
1998-12-14 18:09:13 +00:00
|
|
|
error = ip_dn_ctl_ptr(sopt);
|
2001-11-04 22:56:25 +00:00
|
|
|
else
|
|
|
|
error = ENOPROTOOPT;
|
1998-12-14 18:09:13 +00:00
|
|
|
break ;
|
1998-08-23 03:07:17 +00:00
|
|
|
|
|
|
|
case MRT_INIT:
|
|
|
|
case MRT_DONE:
|
|
|
|
case MRT_ADD_VIF:
|
|
|
|
case MRT_DEL_VIF:
|
|
|
|
case MRT_ADD_MFC:
|
|
|
|
case MRT_DEL_MFC:
|
|
|
|
case MRT_VERSION:
|
|
|
|
case MRT_ASSERT:
|
|
|
|
error = ip_mrouter_get(so, sopt);
|
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
default:
|
|
|
|
error = ip_ctloutput(so, sopt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SOPT_SET:
|
|
|
|
switch (sopt->sopt_name) {
|
|
|
|
case IP_HDRINCL:
|
|
|
|
error = sooptcopyin(sopt, &optval, sizeof optval,
|
|
|
|
sizeof optval);
|
|
|
|
if (error)
|
|
|
|
break;
|
|
|
|
if (optval)
|
1995-09-21 19:59:43 +00:00
|
|
|
inp->inp_flags |= INP_HDRINCL;
|
|
|
|
else
|
|
|
|
inp->inp_flags &= ~INP_HDRINCL;
|
1998-08-23 03:07:17 +00:00
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
case IP_FW_DEL:
|
|
|
|
case IP_FW_FLUSH:
|
|
|
|
case IP_FW_ZERO:
|
1999-08-01 16:57:24 +00:00
|
|
|
case IP_FW_RESETLOG:
|
2001-11-04 22:56:25 +00:00
|
|
|
if (IPFW_LOADED)
|
1998-08-23 03:07:17 +00:00
|
|
|
error = ip_fw_ctl_ptr(sopt);
|
2001-11-04 22:56:25 +00:00
|
|
|
else
|
|
|
|
error = ENOPROTOOPT;
|
1998-08-23 03:07:17 +00:00
|
|
|
break;
|
1995-01-12 13:06:32 +00:00
|
|
|
|
1998-12-14 18:09:13 +00:00
|
|
|
case IP_DUMMYNET_CONFIGURE:
|
|
|
|
case IP_DUMMYNET_DEL:
|
|
|
|
case IP_DUMMYNET_FLUSH:
|
2001-11-04 22:56:25 +00:00
|
|
|
if (DUMMYNET_LOADED)
|
1998-12-14 18:09:13 +00:00
|
|
|
error = ip_dn_ctl_ptr(sopt);
|
2001-11-04 22:56:25 +00:00
|
|
|
else
|
|
|
|
error = ENOPROTOOPT ;
|
1998-12-14 18:09:13 +00:00
|
|
|
break ;
|
1996-08-21 21:37:07 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
case IP_RSVP_ON:
|
|
|
|
error = ip_rsvp_init(so);
|
|
|
|
break;
|
1994-09-06 22:42:31 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
case IP_RSVP_OFF:
|
|
|
|
error = ip_rsvp_done();
|
|
|
|
break;
|
1994-09-06 22:42:31 +00:00
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
/* XXX - should be combined */
|
|
|
|
case IP_RSVP_VIF_ON:
|
|
|
|
error = ip_rsvp_vif_init(so, sopt);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IP_RSVP_VIF_OFF:
|
|
|
|
error = ip_rsvp_vif_done(so, sopt);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MRT_INIT:
|
|
|
|
case MRT_DONE:
|
|
|
|
case MRT_ADD_VIF:
|
|
|
|
case MRT_DEL_VIF:
|
|
|
|
case MRT_ADD_MFC:
|
|
|
|
case MRT_DEL_MFC:
|
|
|
|
case MRT_VERSION:
|
|
|
|
case MRT_ASSERT:
|
|
|
|
error = ip_mrouter_set(so, sopt);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
error = ip_ctloutput(so, sopt);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1998-08-23 03:07:17 +00:00
|
|
|
|
|
|
|
return (error);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
|
|
|
|
1997-02-13 19:46:45 +00:00
|
|
|
/*
|
|
|
|
* This function exists solely to receive the PRC_IFDOWN messages which
|
|
|
|
* are sent by if_down(). It looks for an ifaddr whose ifa_addr is sa,
|
|
|
|
* and calls in_ifadown() to remove all routes corresponding to that address.
|
|
|
|
* It also receives the PRC_IFUP messages from if_up() and reinstalls the
|
|
|
|
* interface routes.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
rip_ctlinput(cmd, sa, vip)
|
|
|
|
int cmd;
|
|
|
|
struct sockaddr *sa;
|
|
|
|
void *vip;
|
|
|
|
{
|
|
|
|
struct in_ifaddr *ia;
|
|
|
|
struct ifnet *ifp;
|
|
|
|
int err;
|
|
|
|
int flags;
|
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
switch (cmd) {
|
1997-02-13 19:46:45 +00:00
|
|
|
case PRC_IFDOWN:
|
2001-03-16 20:00:53 +00:00
|
|
|
TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
|
1997-02-13 19:46:45 +00:00
|
|
|
if (ia->ia_ifa.ifa_addr == sa
|
|
|
|
&& (ia->ia_flags & IFA_ROUTE)) {
|
|
|
|
/*
|
|
|
|
* in_ifscrub kills the interface route.
|
|
|
|
*/
|
|
|
|
in_ifscrub(ia->ia_ifp, ia);
|
|
|
|
/*
|
|
|
|
* in_ifadown gets rid of all the rest of
|
|
|
|
* the routes. This is not quite the right
|
|
|
|
* thing to do, but at least if we are running
|
|
|
|
* a routing process they will come back.
|
|
|
|
*/
|
2001-05-11 14:37:34 +00:00
|
|
|
in_ifadown(&ia->ia_ifa, 0);
|
1997-02-13 19:46:45 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PRC_IFUP:
|
2001-03-16 20:00:53 +00:00
|
|
|
TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
|
1997-02-13 19:46:45 +00:00
|
|
|
if (ia->ia_ifa.ifa_addr == sa)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (ia == 0 || (ia->ia_flags & IFA_ROUTE))
|
|
|
|
return;
|
|
|
|
flags = RTF_UP;
|
|
|
|
ifp = ia->ia_ifa.ifa_ifp;
|
|
|
|
|
|
|
|
if ((ifp->if_flags & IFF_LOOPBACK)
|
|
|
|
|| (ifp->if_flags & IFF_POINTOPOINT))
|
|
|
|
flags |= RTF_HOST;
|
|
|
|
|
|
|
|
err = rtinit(&ia->ia_ifa, RTM_ADD, flags);
|
|
|
|
if (err == 0)
|
|
|
|
ia->ia_flags |= IFA_ROUTE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1999-11-22 02:45:11 +00:00
|
|
|
u_long rip_sendspace = RIPSNDQ;
|
|
|
|
u_long rip_recvspace = RIPRCVQ;
|
1995-10-21 02:12:20 +00:00
|
|
|
|
1999-11-22 02:45:11 +00:00
|
|
|
SYSCTL_INT(_net_inet_raw, OID_AUTO, maxdgram, CTLFLAG_RW,
|
1999-05-03 23:57:32 +00:00
|
|
|
&rip_sendspace, 0, "Maximum outgoing raw IP datagram size");
|
1999-11-22 02:45:11 +00:00
|
|
|
SYSCTL_INT(_net_inet_raw, OID_AUTO, recvspace, CTLFLAG_RW,
|
1999-05-03 23:57:32 +00:00
|
|
|
&rip_recvspace, 0, "Maximum incoming raw IP datagram size");
|
1995-10-21 02:12:20 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
2001-09-12 08:38:13 +00:00
|
|
|
rip_attach(struct socket *so, int proto, struct thread *td)
|
1997-02-18 20:46:36 +00:00
|
|
|
{
|
|
|
|
struct inpcb *inp;
|
1997-12-18 09:13:39 +00:00
|
|
|
int error, s;
|
1997-02-18 20:46:36 +00:00
|
|
|
|
|
|
|
inp = sotoinpcb(so);
|
|
|
|
if (inp)
|
|
|
|
panic("rip_attach");
|
2001-09-12 08:38:13 +00:00
|
|
|
if (td && (error = suser_td(td)) != 0)
|
1997-04-27 20:01:29 +00:00
|
|
|
return error;
|
1997-02-18 20:46:36 +00:00
|
|
|
|
1999-12-22 19:13:38 +00:00
|
|
|
error = soreserve(so, rip_sendspace, rip_recvspace);
|
|
|
|
if (error)
|
|
|
|
return error;
|
1997-12-18 09:13:39 +00:00
|
|
|
s = splnet();
|
2001-09-12 08:38:13 +00:00
|
|
|
error = in_pcballoc(so, &ripcbinfo, td);
|
1997-12-18 09:13:39 +00:00
|
|
|
splx(s);
|
|
|
|
if (error)
|
1997-02-18 20:46:36 +00:00
|
|
|
return error;
|
|
|
|
inp = (struct inpcb *)so->so_pcb;
|
1999-12-22 19:13:38 +00:00
|
|
|
inp->inp_vflag |= INP_IPV4;
|
1997-04-03 05:14:45 +00:00
|
|
|
inp->inp_ip_p = proto;
|
2001-03-09 12:22:51 +00:00
|
|
|
inp->inp_ip_ttl = ip_defttl;
|
1997-02-18 20:46:36 +00:00
|
|
|
return 0;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
|
|
|
rip_detach(struct socket *so)
|
|
|
|
{
|
|
|
|
struct inpcb *inp;
|
|
|
|
|
|
|
|
inp = sotoinpcb(so);
|
|
|
|
if (inp == 0)
|
|
|
|
panic("rip_detach");
|
|
|
|
if (so == ip_mrouter)
|
|
|
|
ip_mrouter_done();
|
|
|
|
ip_rsvp_force_done(so);
|
|
|
|
if (so == ip_rsvpd)
|
|
|
|
ip_rsvp_done();
|
|
|
|
in_pcbdetach(inp);
|
|
|
|
return 0;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
|
|
|
rip_abort(struct socket *so)
|
|
|
|
{
|
|
|
|
soisdisconnected(so);
|
|
|
|
return rip_detach(so);
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
|
|
|
rip_disconnect(struct socket *so)
|
|
|
|
{
|
|
|
|
if ((so->so_state & SS_ISCONNECTED) == 0)
|
|
|
|
return ENOTCONN;
|
|
|
|
return rip_abort(so);
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
2001-09-12 08:38:13 +00:00
|
|
|
rip_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
|
1997-02-18 20:46:36 +00:00
|
|
|
{
|
|
|
|
struct inpcb *inp = sotoinpcb(so);
|
1997-08-16 19:16:27 +00:00
|
|
|
struct sockaddr_in *addr = (struct sockaddr_in *)nam;
|
1997-02-18 20:46:36 +00:00
|
|
|
|
1997-08-16 19:16:27 +00:00
|
|
|
if (nam->sa_len != sizeof(*addr))
|
1997-02-18 20:46:36 +00:00
|
|
|
return EINVAL;
|
|
|
|
|
|
|
|
if (TAILQ_EMPTY(&ifnet) || ((addr->sin_family != AF_INET) &&
|
|
|
|
(addr->sin_family != AF_IMPLINK)) ||
|
|
|
|
(addr->sin_addr.s_addr &&
|
|
|
|
ifa_ifwithaddr((struct sockaddr *)addr) == 0))
|
|
|
|
return EADDRNOTAVAIL;
|
|
|
|
inp->inp_laddr = addr->sin_addr;
|
|
|
|
return 0;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
2001-09-12 08:38:13 +00:00
|
|
|
rip_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
|
1997-02-18 20:46:36 +00:00
|
|
|
{
|
|
|
|
struct inpcb *inp = sotoinpcb(so);
|
1997-08-16 19:16:27 +00:00
|
|
|
struct sockaddr_in *addr = (struct sockaddr_in *)nam;
|
1997-02-18 20:46:36 +00:00
|
|
|
|
1997-08-16 19:16:27 +00:00
|
|
|
if (nam->sa_len != sizeof(*addr))
|
1997-02-18 20:46:36 +00:00
|
|
|
return EINVAL;
|
|
|
|
if (TAILQ_EMPTY(&ifnet))
|
|
|
|
return EADDRNOTAVAIL;
|
|
|
|
if ((addr->sin_family != AF_INET) &&
|
|
|
|
(addr->sin_family != AF_IMPLINK))
|
|
|
|
return EAFNOSUPPORT;
|
|
|
|
inp->inp_faddr = addr->sin_addr;
|
|
|
|
soisconnected(so);
|
|
|
|
return 0;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
|
|
|
rip_shutdown(struct socket *so)
|
|
|
|
{
|
|
|
|
socantsendmore(so);
|
|
|
|
return 0;
|
|
|
|
}
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
static int
|
1997-08-16 19:16:27 +00:00
|
|
|
rip_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
|
2001-09-12 08:38:13 +00:00
|
|
|
struct mbuf *control, struct thread *td)
|
1997-02-18 20:46:36 +00:00
|
|
|
{
|
|
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
|
|
register u_long dst;
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
if (so->so_state & SS_ISCONNECTED) {
|
|
|
|
if (nam) {
|
|
|
|
m_freem(m);
|
|
|
|
return EISCONN;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1997-02-18 20:46:36 +00:00
|
|
|
dst = inp->inp_faddr.s_addr;
|
|
|
|
} else {
|
|
|
|
if (nam == NULL) {
|
|
|
|
m_freem(m);
|
|
|
|
return ENOTCONN;
|
|
|
|
}
|
1997-08-16 19:16:27 +00:00
|
|
|
dst = ((struct sockaddr_in *)nam)->sin_addr.s_addr;
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1997-02-18 20:46:36 +00:00
|
|
|
return rip_output(m, so, dst);
|
1994-05-24 10:09:53 +00:00
|
|
|
}
|
1997-02-18 20:46:36 +00:00
|
|
|
|
1998-05-15 20:11:40 +00:00
|
|
|
static int
|
2000-07-04 11:25:35 +00:00
|
|
|
rip_pcblist(SYSCTL_HANDLER_ARGS)
|
1998-05-15 20:11:40 +00:00
|
|
|
{
|
|
|
|
int error, i, n, s;
|
|
|
|
struct inpcb *inp, **inp_list;
|
|
|
|
inp_gen_t gencnt;
|
|
|
|
struct xinpgen xig;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The process of preparing the TCB list is too time-consuming and
|
|
|
|
* resource-intensive to repeat twice on every request.
|
|
|
|
*/
|
|
|
|
if (req->oldptr == 0) {
|
|
|
|
n = ripcbinfo.ipi_count;
|
|
|
|
req->oldidx = 2 * (sizeof xig)
|
|
|
|
+ (n + n/8) * sizeof(struct xinpcb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (req->newptr != 0)
|
|
|
|
return EPERM;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* OK, now we're committed to doing something.
|
|
|
|
*/
|
|
|
|
s = splnet();
|
|
|
|
gencnt = ripcbinfo.ipi_gencnt;
|
|
|
|
n = ripcbinfo.ipi_count;
|
|
|
|
splx(s);
|
|
|
|
|
|
|
|
xig.xig_len = sizeof xig;
|
|
|
|
xig.xig_count = n;
|
|
|
|
xig.xig_gen = gencnt;
|
|
|
|
xig.xig_sogen = so_gencnt;
|
|
|
|
error = SYSCTL_OUT(req, &xig, sizeof xig);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
inp_list = malloc(n * sizeof *inp_list, M_TEMP, M_WAITOK);
|
|
|
|
if (inp_list == 0)
|
|
|
|
return ENOMEM;
|
|
|
|
|
|
|
|
s = splnet();
|
2001-02-04 13:13:25 +00:00
|
|
|
for (inp = LIST_FIRST(ripcbinfo.listhead), i = 0; inp && i < n;
|
|
|
|
inp = LIST_NEXT(inp, inp_list)) {
|
2001-10-05 07:06:32 +00:00
|
|
|
if (inp->inp_gencnt <= gencnt) {
|
2001-11-08 02:13:18 +00:00
|
|
|
if (cr_cansee(req->td->td_proc->p_ucred,
|
2001-10-09 21:40:30 +00:00
|
|
|
inp->inp_socket->so_cred))
|
2001-10-05 07:06:32 +00:00
|
|
|
continue;
|
1998-05-15 20:11:40 +00:00
|
|
|
inp_list[i++] = inp;
|
2001-10-05 07:06:32 +00:00
|
|
|
}
|
1998-05-15 20:11:40 +00:00
|
|
|
}
|
|
|
|
splx(s);
|
|
|
|
n = i;
|
|
|
|
|
|
|
|
error = 0;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
|
|
inp = inp_list[i];
|
|
|
|
if (inp->inp_gencnt <= gencnt) {
|
|
|
|
struct xinpcb xi;
|
|
|
|
xi.xi_len = sizeof xi;
|
|
|
|
/* XXX should avoid extra copy */
|
|
|
|
bcopy(inp, &xi.xi_inp, sizeof *inp);
|
|
|
|
if (inp->inp_socket)
|
|
|
|
sotoxsocket(inp->inp_socket, &xi.xi_socket);
|
|
|
|
error = SYSCTL_OUT(req, &xi, sizeof xi);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!error) {
|
|
|
|
/*
|
|
|
|
* Give the user an updated idea of our state.
|
|
|
|
* If the generation differs from what we told
|
|
|
|
* her before, she knows that something happened
|
|
|
|
* while we were processing this request, and it
|
|
|
|
* might be necessary to retry.
|
|
|
|
*/
|
|
|
|
s = splnet();
|
|
|
|
xig.xig_gen = ripcbinfo.ipi_gencnt;
|
|
|
|
xig.xig_sogen = so_gencnt;
|
|
|
|
xig.xig_count = ripcbinfo.ipi_count;
|
|
|
|
splx(s);
|
|
|
|
error = SYSCTL_OUT(req, &xig, sizeof xig);
|
|
|
|
}
|
|
|
|
free(inp_list, M_TEMP);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
SYSCTL_PROC(_net_inet_raw, OID_AUTO/*XXX*/, pcblist, CTLFLAG_RD, 0, 0,
|
|
|
|
rip_pcblist, "S,xinpcb", "List of active raw IP sockets");
|
|
|
|
|
1997-02-18 20:46:36 +00:00
|
|
|
struct pr_usrreqs rip_usrreqs = {
|
|
|
|
rip_abort, pru_accept_notsupp, rip_attach, rip_bind, rip_connect,
|
|
|
|
pru_connect2_notsupp, in_control, rip_detach, rip_disconnect,
|
|
|
|
pru_listen_notsupp, in_setpeeraddr, pru_rcvd_notsupp,
|
1999-11-22 02:45:11 +00:00
|
|
|
pru_rcvoob_notsupp, rip_send, pru_sense_null, rip_shutdown,
|
1997-09-14 03:10:42 +00:00
|
|
|
in_setsockaddr, sosend, soreceive, sopoll
|
1997-02-18 20:46:36 +00:00
|
|
|
};
|