Commit Graph

27 Commits

Author SHA1 Message Date
Garrett Wollman
6fce01c990 Export ipstat via sysctl. Don't understand why this wasn't done before. 1997-09-25 00:34:35 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Peter Wemm
c922550c95 Add INADDR_LOOPBACK, moved from <rpc/rpc.h> 1996-12-30 15:34:17 +00:00
Bill Fenner
82c23eba89 Add the IP_RECVIF socket option, which supplies a packet's incoming interface
using a sockaddr_dl.

Fix the other packet-information socket options (SO_TIMESTAMP, IP_RECVDSTADDR)
to work for multicast UDP and raw sockets as well.  (They previously only
worked for unicast UDP).
1996-11-11 04:56:32 +00:00
Søren Schmidt
6713d4a747 Changed args to the nat functions. 1996-10-22 22:26:02 +00:00
Alexander Langer
af44ef0a2f Reword two comments. 1996-10-19 20:23:12 +00:00
Søren Schmidt
fed1c7e9e4 Add hooks for an IP NAT module, much like the firewall stuff...
Move the sockopt definitions for the firewall code from
ip_fw.h to in.h where it belongs.
1996-08-21 21:37:07 +00:00
Peter Wemm
bbd42ad0e5 Add two more portrange sysctls, which control the area of the below
IPPORT_RESERVED that is used for selection when bind() is told to allocate
a reserved port.

Also, implement simple sanity checking for all the addresses set, to make
it a little harder for a user/sysadmin to shoot themselves in the feet.
1996-08-12 14:05:54 +00:00
Julian Elischer
93e0e11657 Adding changes to ipfw and the kernel to support ip packet diversion..
This stuff should not be too destructive if the IPDIVERT is not compiled in..
 be aware that this changes the size of the ip_fw struct
so ipfw needs to be recompiled to use it.. more changes coming to clean this up.
1996-07-10 19:44:30 +00:00
Poul-Henning Kamp
23bf99538c Add feature for tcp "established".
Change interface between netinet and ip_fw to be more general, and thus
hopefully also support other ip filtering implementations.
1996-04-03 13:52:20 +00:00
Bill Fenner
49fa849bc8 IGMPv2 routines rewritten, to be more compact and to fully comply
with the IGMPv2 Internet Draft (including Router Alert IP option)
1996-03-14 16:59:20 +00:00
Peter Wemm
33b3ac0633 Make the default behavior of local port assignment match traditional
systems (my last change did not mix well with some firewall
configurations).  As much as I dislike firewalls, this is one thing I
I was not prepared to break by default.. :-)

Allow the user to nominate one of three ranges of port numbers as
candidates for selecting a local address to replace a zero port number.
The ranges are selected via a setsockopt(s, IPPROTO_IP, IP_PORTRANGE, &arg)
call.  The three ranges are: default, high (to bypass firewalls) and
low (to get a port below 1024).

The default and high port ranges are sysctl settable under sysctl
net.inet.ip.portrange.*

This code also fixes a potential deadlock if the system accidently ran out
of local port addresses. It'd drop into an infinite while loop.

The secure port selection (for root) should reduce overheads and increase
reliability of rlogin/rlogind/rsh/rshd if they are modified to take
advantage of it.

Partly suggested by: pst
Reviewed by: wollman
1996-02-22 21:32:23 +00:00
Peter Wemm
101f9fc846 Change the default local address range for IP from 1024 through 5000
to 20000 through 30000.  These numbers are used for local IP port numbers
when an explicit address is not specified.

The values are sysctl modifiable under: net.inet.ip.port_{first|last}_auto

These numbers do not overlap with any known server addresses, without going
above 32768 which are "negative" on some other implementations.

20000 through 30000 is 2.5 times larger than the old range, but some have
suggested even that may not be enough... (gasp!)  Setting a low address
of 10000 should be plenty.. :-)
1996-01-19 08:00:58 +00:00
Poul-Henning Kamp
0312fbe97d New style sysctl & staticize alot of stuff. 1995-11-14 20:34:56 +00:00
Garrett Wollman
054ef37088 Instrument the IP input queue with two new read-only MIB entries:
net.inet.ip.intr-queue-maxlen (=== ipintrq.ifq_maxlen)
and	net.inet.ip.intr-queue-drops (=== ipintrq.ifq_drops)

There should probably be a standard way of getting the same information
going the other way.
1995-11-01 17:18:27 +00:00
Peter Wemm
42c03a52ba Change the compile-time option of DIRECTED_BROADCAST into a sysctl
variable underneath ip, "directed-broadcast".
Reviewed by:	David Greenman
Obtained from:	NetBSD, by Darren Reed.
1995-07-18 09:56:44 +00:00
Garrett Wollman
1c5de19afb Kernel side of 3.5 multicast routing code, based on work by Bill Fenner
and other work done here.  The LKM support is probably broken, but it
still compiles and will be fixed later.
1995-06-13 17:51:16 +00:00
Garrett Wollman
1025071f85 Reject source routes unless configured on by administrator. 1995-03-16 18:22:28 +00:00
Garrett Wollman
ef0cdf3329 Add inet_ntoa() and replace ARP's private routine with same. 1995-03-16 17:32:27 +00:00
Garrett Wollman
ea80aed1a9 Attempt to make the host route cache a bit smarter under conditions of
high load:

	1) If there ever get to be more than net.inet.ip.rtmaxcache entries
	   in the cache, in_rtqtimo() will reduce net.inet.ip.rtexpire by
	   1/3 and do another round, unles net.inet.ip.rtexpire is less than
	   net.inet.ip.rtminexpire, and never more than once in ten minutes
	   (rtq_timeout).

	2) If net.inet.ip.rtexpire is set to zero, don't bother to cache
	   anything.
1995-02-14 23:04:52 +00:00
Garrett Wollman
3c896bda76 Correct sysctl info so that net.inet.ip.rtexpire is actually accessible. 1994-12-21 17:23:59 +00:00
Garrett Wollman
5be2baf843 Make rtq_reallyold user-configurable via sysctl. 1994-12-14 19:06:37 +00:00
Garrett Wollman
f0068c4a70 Initial get-the-easy-case-working upgrade of the multicast code
to something more recent than the ancient 1.2 release contained in
4.4.  This code has the following advantages as compared to
previous versions (culled from the README file for the SunOS release):

- True multicast delivery
- Configurable rate-limiting of forwarded multicast traffic on each
  physical interface or tunnel, using a token-bucket limiter.
- Simplistic classification of packets for prioritized dropping.
- Administrative scoping of multicast address ranges.
- Faster detection of hosts leaving groups.
- Support for multicast traceroute (code not yet available).
- Support for RSVP, the Resource Reservation Protocol.

What still needs to be done:

- The multicast forwarder needs testing.
- The multicast routing daemon needs to be ported.
- Network interface drivers need to have the `#ifdef MULTICAST' goop ripped
  out of them.
- The IGMP code should probably be bogon-tested.

Some notes about the porting process:

In some cases, the Berkeley people decided to incorporate functionality from
later releases of the multicast code, but then had to do things differently.
As a result, if you look at Deering's patches, and then look at
our code, it is not always obvious whether the patch even applies.  Let
the reader beware.

I ran ip_mroute.c through several passes of `unifdef' to get rid of
useless grot, and to permanently enable the RSVP support, which we will
include as standard.

Ported by: 	Garrett Wollman
Submitted by:	Steve Deering and Ajit Thyagarajan (among others)
1994-09-06 22:42:31 +00:00
Paul Richards
707f139edb Made idempotent.
Submitted by:	Paul
1994-08-21 05:27:42 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00