Commit Graph

24 Commits

Author SHA1 Message Date
Luigi Rizzo
a63e8ce9e7 add back DPADD (removed by mistake in a previous commit) 2010-03-08 14:43:55 +00:00
Luigi Rizzo
cc4d3c30ea Bring in the most recent version of ipfw and dummynet, developed
and tested over the past two months in the ipfw3-head branch.  This
also happens to be the same code available in the Linux and Windows
ports of ipfw and dummynet.

The major enhancement is a completely restructured version of
dummynet, with support for different packet scheduling algorithms
(loadable at runtime), faster queue/pipe lookup, and a much cleaner
internal architecture and kernel/userland ABI which simplifies
future extensions.

In addition to the existing schedulers (FIFO and WF2Q+), we include
a Deficit Round Robin (DRR or RR for brevity) scheduler, and a new,
very fast version of WF2Q+ called QFQ.

Some test code is also present (in sys/netinet/ipfw/test) that
lets you build and test schedulers in userland.

Also, we have added a compatibility layer that understands requests
from the RELENG_7 and RELENG_8 versions of the /sbin/ipfw binaries,
and replies correctly (at least, it does its best; sometimes you
just cannot tell who sent the request and how to answer).
The compatibility layer should make it possible to MFC this code in a
relatively short time.

Some minor glitches (e.g. handling of ipfw set enable/disable,
and a workaround for a bug in RELENG_7's /sbin/ipfw) will be
fixed with separate commits.

CREDITS:
This work has been partly supported by the ONELAB2 project, and
mostly developed by Riccardo Panicucci and myself.
The code for the qfq scheduler is mostly from Fabio Checconi,
and Marta Carbone and Francesco Magno have helped with testing,
debugging and some bug fixes.
2010-03-02 17:40:48 +00:00
Ruslan Ermilov
bee10047c0 Fixed dependencies (make checkdpadd). 2010-02-25 20:24:19 +00:00
Oleg Bulyzhin
6882bf4d92 - fix dummynet 'fast' mode for WF2Q case.
- fix printing of pipe profile data.
- introduce new pipe parameter: 'burst' - how much data can be sent through
  pipe bypassing bandwidth limit.
2009-06-24 22:57:07 +00:00
Luigi Rizzo
23c608c8f6 put the altq-related functions into a separate file.
Minor cleanup of the includes used by the various source files,
including annotations of why certain headers are used.
2009-02-01 16:00:49 +00:00
Luigi Rizzo
50a99912c1 fix printing of uint64_t values, so we can use WARNS=2 2009-01-27 20:26:45 +00:00
Luigi Rizzo
ead75a59f1 Put nat and ipv6 support in their own files.
Usual moving of code with no changes from ipfw2.c to the
newly created files, and addition of prototypes to ipfw2.h

I have added forward declarations for ipfw_insn_* in ipfw2.h
to avoid a global dependency on ip_fw.h
2009-01-27 12:01:30 +00:00
Luigi Rizzo
d36bf6e792 never mind, for the time being let's stick with WARNS=0 until
we sort out all proper printf formats.
2009-01-27 11:03:47 +00:00
Luigi Rizzo
3c0c871777 Start splitting the monster file in smaller blocks.
In this episode:
- introduce a common header with a minimal set of common definitions;
- bring the main() function and options parser in main.c
- rename the main functions with an ipfw_ prefix

No code changes except for the introduction of a global variable,
resvd_set_number, which stores the RESVD_SET value from ip_fw.h
and is used to remove the dependency of main.c from ip_fw.h
(and the subtree of dependencies) for just a single constant.
2009-01-27 10:18:55 +00:00
Luigi Rizzo
2edea98d7f I believe this is safe to build with WARNS=2 now 2009-01-27 09:04:29 +00:00
Brian Feldman
a5559720e1 Remove blindly-copied extra include path. 2004-10-03 06:32:37 +00:00
Brian Feldman
974dfe3084 Add to IPFW the ability to do ALTQ classification/tagging. 2004-10-03 00:17:46 +00:00
Bruce Evans
bb89ddf57b Uncommented WARNS=0. ipfw2.c is full of printf format errors that are
fatal on alphas.

Fixed setting of WARNS.  WARNS should never be set unconditionally, since
this breaks testing of different WARNS values by setting it at a higher
level (e.g., on the command line).
2002-07-11 17:33:37 +00:00
Luigi Rizzo
9758b77ff1 The new ipfw code.
This code makes use of variable-size kernel representation of rules
(exactly the same concept of BPF instructions, as used in the BSDI's
firewall), which makes firewall operation a lot faster, and the
code more readable and easier to extend and debug.

The interface with the rest of the system is unchanged, as witnessed
by this commit. The only extra kernel files that I am touching
are if_fw.h and ip_dummynet.c, which is quite tied to ipfw. In
userland I only had to touch those programs which manipulate the
internal representation of firewall rules).

The code is almost entirely new (and I believe I have written the
vast majority of those sections which were taken from the former
ip_fw.c), so rather than modifying the old ip_fw.c I decided to
create a new file, sys/netinet/ip_fw2.c .  Same for the user
interface, which is in sbin/ipfw/ipfw2.c (it still compiles to
/sbin/ipfw).  The old files are still there, and will be removed
in due time.

I have not renamed the header file because it would have required
touching a one-line change to a number of kernel files.

In terms of user interface, the new "ipfw" is supposed to accepts
the old syntax for ipfw rules (and produce the same output with
"ipfw show". Only a couple of the old options (out of some 30 of
them) has not been implemented, but they will be soon.

On the other hand, the new code has some very powerful extensions.
First, you can put "or" connectives between match fields (and soon
also between options), and write things like

ipfw add allow ip from { 1.2.3.4/27 or 5.6.7.8/30 } 10-23,25,1024-3000 to any

This should make rulesets slightly more compact (and lines longer!),
by condensing 2 or more of the old rules into single ones.

Also, as an example of how easy the rules can be extended, I have
implemented an 'address set' match pattern, where you can specify
an IP address in a format like this:

        10.20.30.0/26{18,44,33,22,9}

which will match the set of hosts listed in braces belonging to the
subnet 10.20.30.0/26 . The match is done using a bitmap, so it is
essentially a constant time operation requiring a handful of CPU
instructions (and a very small amount of memmory -- for a full /24
subnet, the instruction only consumes 40 bytes).

Again, in this commit I have focused on functionality and tried
to minimize changes to the other parts of the system. Some performance
improvement can be achieved with minor changes to the interface of
ip_fw_chk_t. This will be done later when this code is settled.

The code is meant to compile unmodified on RELENG_4 (once the
PACKET_TAG_* changes have been merged), for this reason
you will see #ifdef __FreeBSD_version in a couple of places.
This should minimize errors when (hopefully soon) it will be time
to do the MFC.
2002-06-27 23:02:18 +00:00
David E. O'Brien
2d68bf45bf Default to WARNS=2.
Binary builds that cannot handle this must explicitly set WARNS=0.

Reviewed by:	mike
2001-12-04 02:19:58 +00:00
Ruslan Ermilov
0a5779d45b - Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.
2001-03-26 14:33:27 +00:00
Ruslan Ermilov
fe655281c5 Set the default manual section for sbin/ to 8. 2001-03-20 18:13:31 +00:00
Ruslan Ermilov
1e7492ffe1 Convert this Makefile to the usual style. 2000-10-06 11:18:11 +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
Poul-Henning Kamp
72ee2a8b10 Update to match kernel code. 1996-02-24 13:39:46 +00:00
Poul-Henning Kamp
5b0c234e20 A new ipfw program that can set and control the new features.
An almost correct usage is printed.
1996-02-24 00:20:56 +00:00
Jordan K. Hubbard
61a3cfb7a3 ipfirewall.4 is obviously not here anymore! Adjust the Makefile. 1995-02-18 16:36:23 +00:00
Jordan K. Hubbard
c9a156d596 New man pages from Ugen. Delete my old, first attempt. I only hope
that the english in Ugen's two replacement pages is not too impenetrable! :-)
[Note:  Poul - please pull these into the BETA branch along with the
other firewall changes]

Submitted by:	ugen
1994-11-17 09:50:30 +00:00
Jordan K. Hubbard
b877c0f37e Add the ipfw command, for IP firewall construction.
Submitted by:	danny ugen
1994-10-28 15:06:53 +00:00