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Commit Graph

103 Commits

Author SHA1 Message Date
Yoshinobu Inoue
7cba257ae5 Move htons() ip_len to after the in_delayed_cksum() call.
This should stop cksum error messages on IPsec communication
which was reported on freebsd-current.

Reviewed by: jlemon
2000-04-02 16:18:26 +00:00
Jonathan Lemon
ea53ecd9d4 Calculate any delayed checksums before handing an mbuf off to a
divert socket.  This fixes a problem with ppp/natd.

Reviewed by:	bsd	(Brian Dean, gotta love that login name)
2000-04-01 18:51:03 +00:00
Jonathan Lemon
20c822f399 If `ipfw fwd' loops an mbuf back to ip_input from ip_output and the
mbuf is marked for delayed checksums, then additionally mark the
packet as having it's checksums computed.  This allows us to bypass
computing/checking the checksum entirely, which isn't really needeed
as the packet has never hit the wire.

Reviewed by:		green
2000-03-30 02:16:40 +00:00
Jonathan Lemon
db4f9cc703 Add support for offloading IP/TCP/UDP checksums to NIC hardware which
supports them.
2000-03-27 19:14:27 +00:00
Yoshinobu Inoue
f63e7634ac Initialize mbuf pointer at getting ipsec policy.
Without this, kernel will panic at getsockopt() of IPSEC_POLICY.
Also make compilable libipsec/test-policy.c which tries getsockopt() of
IPSEC_POLICY.

Approved by: jkh

Submitted by: sakane@kame.net
2000-03-09 14:57:16 +00:00
Guido van Rooij
6d37c73e26 Remove option IPFILTER_KLD. In case you wanted to kldload ipfilter,
the module would only work in kernels built with this option.

Approved by:	jkh
2000-02-23 20:11:57 +00:00
Luigi Rizzo
6bc748b057 Support the net.inet.ip.fw.enable variable, part of
the recent ipfw modifications.

Approved-by: jordan
2000-02-10 14:19:53 +00:00
Ruslan Ermilov
5db1e34ea4 MGETHDR() does not initialize m_pkthdr.rcvif, do it here.
This fixes page fault panic observed when diverting packets
with IP options (e.g. ping -R remoteIP over natd).

PR:	kern/8596, kern/11199
2000-01-10 18:46:05 +00:00
Yoshinobu Inoue
d0a98d79d2 enable IPsec over DUMMYNET again
Submitted by: luigi
Reviewed by: luigi
2000-01-09 03:06:28 +00:00
Luigi Rizzo
d1f04b29f0 Cleanup dummynet call interface so it should now work on the Alpha
as well. Also (probably) fix a bug introduced during the IPv6 import.
2000-01-08 11:28:23 +00:00
Yoshinobu Inoue
6a800098cc IPSEC support in the kernel.
pr_input() routines prototype is also changed to support IPSEC and IPV6
chained protocol headers.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
1999-12-22 19:13:38 +00:00
Archie Cobbs
8948e4ba8e Miscellaneous fixes/cleanups relating to ipfw and divert(4):
- Implement 'ipfw tee' (finally)
- Divert packets by calling new function divert_packet() directly instead
  of going through protosw[].
- Replace kludgey global variable 'ip_divert_port' with a function parameter
  to divert_packet()
- Replace kludgey global variable 'frag_divert_port' with a function parameter
  to ip_reass()
- style(9) fixes

Reviewed by:	julian, green
1999-12-06 00:43:07 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Luigi Rizzo
eaa726bed6 Free the dummynet descriptor in ip_dummynet, not in the called
routines. The descriptor contains parameters which could be used
within those routines (eg. ip_output() ).

On passing, add IPPROTO_PGM entry to netinet/in.h
1999-05-04 16:20:33 +00:00
Luigi Rizzo
a7c219496c forgot passing the right pointer to dst to dummynet_io().
(-stable and releng2 were already safe).
Debugged-By: phk
1999-05-04 09:26:12 +00:00
Peter Wemm
66e55756b5 Tidy up some stray / unused stuff in the IPFW package and friends.
- unifdef -DCOMPAT_IPFW  (this was on by default already)
- remove traces of in-kernel ip_nat package, it was never committed.
- Make IPFW and DUMMYNET initialize themselves rather than depend on
  compiled-in hooks in ip_init().  This means they initialize the same
  way both in-kernel and as kld modules.  (IPFW initializes now :-)
1999-04-20 13:32:06 +00:00
Luigi Rizzo
f0a53591ad Fix a dummynet bug caused by passing a bad next hop address (the
symptom was the msg "arp failure -- host is not on local network" that
some user have seen on multihomed machines.
Bug tracked down by Emmanuel Duros
1999-03-16 12:06:11 +00:00
Luigi Rizzo
17458d3570 avoid panic with pkts larger than MTU and DF set coming out of a pipe. 1999-02-19 18:32:55 +00:00
Luigi Rizzo
f0f6d6434d Restore 1.82->1.83 change deleted by mistake< per Bruce suggestion 1998-12-21 21:36:40 +00:00
Luigi Rizzo
b715f178c6 Last bits (i think) of dummynet for -current. 1998-12-14 18:09:13 +00:00
Peter Wemm
1c5bb3eaa1 add #include <sys/kernel.h> where it's needed by MALLOC_DEFINE() 1998-11-10 09:16:29 +00:00
Garrett Wollman
db028362a0 Properly fragment multicast packets.
PR: 7802
Submitted by:	Steve McCanne <mccanne@cs.berkeley.edu>
1998-09-02 15:11:14 +00:00
Garrett Wollman
cfe8b629f1 Yow! Completely change the way socket options are handled, eliminating
another specialized mbuf type in the process.  Also clean up some
of the cruft surrounding IPFW, multicast routing, RSVP, and other
ill-explored corners.
1998-08-23 03:07:17 +00:00
Peter Wemm
9de9737f47 Fix a compile error if IPFIREWALL_FORWARD active without IPDIVERT. 1998-08-01 08:44:33 +00:00
Bruce Evans
0c8d2590e3 Fixed some longs that should have been fixed-sized types. 1998-07-13 12:12:25 +00:00
Julian Elischer
1f7e052c16 Don't expect the new code to be used without the right option file being
included.
1998-07-06 05:04:33 +00:00
Julian Elischer
d4295c3248 Fix braino in switching to TAILQ macro. 1998-07-06 05:00:53 +00:00
Julian Elischer
f9e354df42 Support for IPFW based transparent forwarding.
Any packet that can be matched by a ipfw rule can be redirected
transparently to another port or machine. Redirection to another port
mostly makes sense with tcp, where a session can be set up
between a proxy and an unsuspecting client. Redirection to another machine
requires that the other machine also be expecting to receive the forwarded
packets, as their headers will not have been modified.

/sbin/ipfw must be recompiled!!!

Reviewed by:	Peter Wemm <peter@freebsd.org>
Submitted by: Chrisy Luke <chrisy@flix.net>
1998-07-06 03:20:19 +00:00
Bruce Evans
e5b19842ef Removed unused includes. 1998-06-21 14:53:44 +00:00
Julian Elischer
2b8a366cf8 fix another typo 1998-06-15 00:35:47 +00:00
Julian Elischer
201c2527a9 Try narrow down the culprit sending undefined packet types through the loopback 1998-06-14 20:58:17 +00:00
Julian Elischer
ed7509ace4 Go through the loopback code with a broom..
Remove lots'o'hacks.
looutput is now static.

Other callers who want to use loopback to allow shortcutting
should call the special entrypoint for this, if_simloop(), which is
specifically designed for this purpose. Using looutput for this purpose
was problematic, particularly with bpf and trying to keep track
of whether one should be using the charateristics of the loopback interface
or the interface (e.g. if_ethersubr.c) that was requesting the loopback.
There was a whole class of errors due to this mis-use each of which had
hacks to cover them up.

Consists largly of hack removal :-)
1998-06-12 03:48:19 +00:00
Julian Elischer
b876049334 Make sure the default value of a dummy variable is 0
so that it doesn't do anything.
1998-06-06 21:49:17 +00:00
Julian Elischer
3ed81d03b3 Fix wrong data type for a pointer. 1998-06-06 20:45:28 +00:00
Julian Elischer
c977d4c735 clean up the changes made to ipfw over the last weeks
(should make the ipfw lkm work again)
1998-06-06 19:39:10 +00:00
Julian Elischer
e256a933a8 Reverse the default sense of the IPFW/DIVERT reinjection code
so that the new behaviour is now default.
Solves the "infinite loop in diversion" problem when more than one diversion
is active.
Man page changes follow.

The new code is in -stable as the NON default option.
1998-06-05 22:40:01 +00:00
Julian Elischer
bb60f459a0 Add optional code to change the way that divert and ipfw work together.
Prior to this change, Accidental recursion protection was done by
the diverted daemon feeding back the divert port number it got
the packet on, as the port number on a sendto(). IPFW knew not to
redivert a packet to this port (again). Processing of the ruleset
started at the beginning again, skipping that divert port.

The new semantic (which is how we should have done it the first time)
is that the port number in the sendto() is the rule number AFTER which
processing should restart, and on a recvfrom(), the port number is the
rule number which caused the diversion. This is much more flexible,
and also more intuitive. If the user uses the same sockaddr received
when resending, processing resumes at the rule number following that
that caused the diversion. The user can however select to resume rule
processing at any rule. (0 is restart at the beginning)

To enable the new code use

option	IPFW_DIVERT_RESTART

This should become the default as soon as people have looked at it a bit
1998-05-25 10:37:48 +00:00
Peter Wemm
1ee25934a9 Make this compile.. There are some unpleasing hacks in here.
A major unifdef session is sorely tempting but would destroy any remaining
chance of tracking the original sources.
1998-03-21 11:34:28 +00:00
Bruce Evans
d68fa50ccb Don't depend on "implicit int". 1998-02-20 13:37:40 +00:00
Eivind Eklund
0b08f5f737 Back out DIAGNOSTIC changes. 1998-02-06 12:14:30 +00:00
Eivind Eklund
47cfdb166d Turn DIAGNOSTIC into a new-style option. 1998-02-04 22:34:03 +00:00
Poul-Henning Kamp
0abc78a697 Rename some local variables to avoid shadowing other local variables.
Found by: -Wshadow
1997-11-07 09:21:01 +00:00
Joerg Wunsch
fbd1372a0b Make IPDIVERT a supported option. Alas, in_var.h depends on it, i
hope i've found out all files that actually depend on this dependancy.
IMHO, it's not very good practice to change the size of internal
structs depending on kernel options.
1997-11-05 20:17:23 +00:00
Poul-Henning Kamp
a1c995b626 Last major round (Unless Bruce thinks of somthing :-) of malloc changes.
Distribute all but the most fundamental malloc types.  This time I also
remembered the trick to making things static:  Put "static" in front of
them.

A couple of finer points by:	bde
1997-10-12 20:26:33 +00:00
Poul-Henning Kamp
55166637cd Distribute and statizice a lot of the malloc M_* types.
Substantial input from:	bde
1997-10-11 18:31:40 +00:00
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Julian Elischer
e4676ba603 Submitted by: Whistle Communications (archie Cobbs)
these are quite extensive additions to the ipfw code.
they include a change to the API because the old method was
broken, but the user view is kept the same.

The new code allows a particular match to skip forward to a particular
line number, so that blocks of rules can be
used without checking all the intervening rules.
There are also many more ways of rejecting
connections especially TCP related, and
many many more ...

see the man page for a complete description.
1997-06-02 05:02:37 +00:00
Bill Fenner
86b1d6d24d Pull up the IP header in ip_mloopback(). This makes sure that the
operations on the header inside ip_mloopback() are performed on
a private copy instead of a shared cluster.

PR:		kern/3410
1997-05-06 21:22:04 +00:00
Garrett Wollman
a29f300e80 The long-awaited mega-massive-network-code- cleanup. Part I.
This commit includes the following changes:
1) Old-style (pr_usrreq()) protocols are no longer supported, the compatibility
glue for them is deleted, and the kernel will panic on boot if any are compiled
in.

2) Certain protocol entry points are modified to take a process structure,
so they they can easily tell whether or not it is possible to sleep, and
also to access credentials.

3) SS_PRIV is no more, and with it goes the SO_PRIVSTATE setsockopt()
call.  Protocols should use the process pointer they are now passed.

4) The PF_LOCAL and PF_ROUTE families have been updated to use the new
style, as has the `raw' skeleton family.

5) PF_LOCAL sockets now obey the process's umask when creating a socket
in the filesystem.

As a result, LINT is now broken.  I'm hoping that some enterprising hacker
with a bit more time will either make the broken bits work (should be
easy for netipx) or dike them out.
1997-04-27 20:01:29 +00:00
Darren Reed
beec821495 Resolve conflicts created by import. 1997-04-03 10:47:12 +00:00