Commit Graph

544 Commits

Author SHA1 Message Date
Kenjiro Cho
413fe3928f import Chuck Cranor's ATM driver 1997-05-09 07:48:14 +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
Alexander Langer
af28de7ca8 Create the default rule with flags IP_FW_F_IN | IP_FW_F_OUT.
Closes PR#3100.
1997-05-06 02:12:18 +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
Peter Dufault
0ddf9be1f0 Make MOD_* macros almost consistent:
Use the name argument almost the same in all LKM types.  Maintain
the current behavior for the external (e.g., modstat) name for DEV,
EXEC, and MISC types being #name ## "_mod" and SYCALL and VFS only
#name.  This is a candidate for change and I vote just the name without
the "_mod".

Change the DISPATCH macro to MOD_DISPATCH for consistency with the
other macros.

Add an LKM_ANON #define to eliminate the magic -1 and associated
signed/unsigned warnings.

Add MOD_PRIVATE to support wcd.c's poking around in the lkm structure.

Change source in tree to use the new interface.

Reviewed by:	Bruce Evans
1997-04-06 11:14:13 +00:00
Darren Reed
beec821495 Resolve conflicts created by import. 1997-04-03 10:47:12 +00:00
Darren Reed
1fddb84ad6 Really import sys/netinet changes for IP Filter 3.2alpha4 this time. 1997-04-03 10:39:35 +00:00
Darren Reed
992cd951e8 This commit was generated by cvs2svn to compensate for changes in r24586,
which included commits to RCS files with non-trunk default branches.
1997-04-03 10:39:35 +00:00
David Greenman
ca98b82c8d Reorganize elements of the inpcb struct to take better advantage of
cache lines. Removed the struct ip proto since only a couple of chars
were actually being used in it. Changed the order of compares in the
PCB hash lookup to take advantage of partial cache line fills (on PPro).

Discussed-with: wollman
1997-04-03 05:14:45 +00:00
Bruce Evans
51a534883a Don't include <sys/ioctl.h> in the kernel. Stage 2: include
<sys/sockio.h> instead of <sys/ioctl.h> in network files.
1997-03-24 11:33:46 +00:00
Bruce Evans
fce002fdef Don't include <sys/ioctl.h> in the kernel. Stage 1: don't include
it when it is not used.  In most cases, the reasons for including it
went away when the special ioctl headers became self-sufficient.
1997-03-24 11:25:10 +00:00
David Greenman
ddd79a9790 Improved performance of hash algorithm while (hopefully) not reducing
the quality of the hash distribution. This does not fix a problem dealing
with poor distribution when using lots of IP aliases and listening
on the same port on every one of them...some other day perhaps; fixing
that requires significant code changes.
The use of xor was inspired by David S. Miller <davem@jenolan.rutgers.edu>
1997-03-03 09:23:37 +00:00
Peter Wemm
413e00145c Import ipfilter 3.1.8 kernel components 1997-03-02 15:50:35 +00:00
Peter Wemm
2236e17352 This commit was generated by cvs2svn to compensate for changes in r23285,
which included commits to RCS files with non-trunk default branches.
1997-03-02 15:50:35 +00:00
Peter Wemm
3589f3628a Replacement import of ipfilter 3.1.7 components used in kernel.
(This is to repair the vendor branching)
1997-03-02 15:49:41 +00:00
Peter Wemm
5c45aebbdc This commit was generated by cvs2svn to compensate for changes in r23282,
which included commits to RCS files with non-trunk default branches.
1997-03-02 15:49:41 +00:00
Bill Fenner
e1596dff1e Fix a comment and some commented-out code in ip_mloopback to
reflect how multicast loopback really works.
1997-02-28 19:40:48 +00:00
Garrett Wollman
b110a8a2b3 Fix #include order. 1997-02-24 20:31:25 +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
Garrett Wollman
cf4dae1061 Properly notice error returns from if_allmulti(). 1997-02-21 18:34:58 +00:00
Garrett Wollman
ef53690bb4 Fix potential crash where a user attempts to perform an implied
connect in TCP while sending urgent data.  It is not clear what
purpose is served by doing this, but there's no good reason why it
shouldn't work.

Submitted by:	tjevans@raleigh.ibm.com via wpaul
1997-02-21 16:30:31 +00:00
Garrett Wollman
7e05e70c2c Fix the parameters of a call to in_setsockaddr(). 1997-02-20 18:39:33 +00:00
Darren Reed
f1743588c7 change IP Filter hooks to match new 3.1.8 patches for FreeBSD 1997-02-19 14:02:27 +00:00
Garrett Wollman
117bcae7c4 Convert raw IP from mondo-switch-statement-from-Hell to
pr_usrreqs.  Collapse duplicates with udp_usrreq.c and
tcp_usrreq.c (calling the generic routines in uipc_socket2.c and
in_pcb.c).  Calling sockaddr()_ or peeraddr() on a detached
socket now traps, rather than harmlessly returning an error; this
should never happen.  Allow the raw IP buffer sizes to be
controlled via sysctl.
1997-02-18 20:46:36 +00:00
Garrett Wollman
d0390e0570 Fix the mechanism for choosing wehether to save the slow-start threshold
in the route.  This allows us to remove the unconditional setting of the
pipesize in the route, which should mean that SO_SNDBUF and SO_RCVBUF
should actually work again.  While we're at it:

- Convert udp_usrreq from `mondo switch statement from Hell' to new-style.
- Delete old TCP mondo switch statement from Hell, which had previously
  been diked out.
1997-02-14 18:15:53 +00:00
Garrett Wollman
39191c8eb8 Provide PRC_IFDOWN and PRC_IFUP support for IP. Now, when an interface
is administratively downed, all routes to that interface (including the
interface route itself) which are not static will be deleted.  When
it comes back up, and addresses remaining will have their interface routes
re-added.  This solves the problem where, for example, an Ethernet interface
is downed by traffic continues to flow by way of ARP entries.
1997-02-13 19:46:45 +00:00
Darren Reed
afed1b4988 Add IP Filter hooks (from patches). 1997-02-10 11:45:37 +00:00
Brian Somers
47c861ecc7 Don't zero ip->ip_sum during sum validation. This should only
affect programs that sit on top of divert(4) sockets.  The
multicast routing code already unconditionally zeros the sum
before recalculating.

Any code that unconditionaly sums a packet without first zeroing
the sum (assuming that it's already zero'd) will break.  No such
code seems to exist.
1997-02-06 11:14:22 +00:00
Brian Somers
d81e40431a Reset ip_divert_ignore to zero immediately after use - also,
set it in the first place, independent of whether sin->sin_port
is set.

The result is that diverted packets that are being forwarded
will be diverted once and only once on the way in (ip_input())
and again, once and only once on the way out (ip_output()) -
twice in total.  ICMP packets that don't contain a port will
now also be diverted.
1997-02-02 16:33:12 +00:00
Garrett Wollman
82c39223b9 Count multicast packets received for groups of which we are not
a member separately from generic ``can't forward'' packets.  This
would have helped me find the previous bug much faster.
1997-01-21 21:08:09 +00:00
Garrett Wollman
93e808cd76 Who had the conical hat? Correct a typo, hidden by a bad cast,
which prevented IP multicast reception from happening.
1997-01-21 19:44:46 +00:00
Joerg Wunsch
e4107dcf00 This mega-merge brings Matt Thomas' 960801 FDDI driver (almost) up
to -current.

Thanks goes to Ulrike Nitzsche <ulrike@ifw-dresden.de> for giving me
a chance to test this.  Only the PCI driver is tested though.

One final patch will follow in a separate commit.  This is so that
everything up to here can be dragged into 2.2, if we decide so.

Reviewed by:	joerg
Submitted by:	Matt Thomas <matt@3am-software.com>
1997-01-17 23:54:45 +00:00
Adam David
839cc09e53 implement "not" keyword for inverting the address logic 1997-01-16 21:04:29 +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
Garrett Wollman
477180fbc8 Use the new if_multiaddrs list for multicast addresses rather than the
previous hackery involving struct in_ifaddr and arpcom.  Get rid of the
abominable multi_kludge.  Update all network interfaces to use the
new machanism.  Distressingly few Ethernet drivers program the multicast
filter properly (assuming the hardware has one, which it usually does).
1997-01-13 21:26:53 +00:00
Garrett Wollman
c41ac00245 Expose more of these structures to tthe user so that netstat
doesn't walk around with its KERNEL exposed.

More commits to follow...
1997-01-03 19:53:35 +00:00
Garrett Wollman
9cb3aff230 Move the ethertypes from <netinet/if_ether.h> to <net/ethernet.h>.
Many programs need the numbers but don't need the internals of ARP.

More commits to follow...
1997-01-03 19:51:54 +00:00
Peter Wemm
c922550c95 Add INADDR_LOOPBACK, moved from <rpc/rpc.h> 1996-12-30 15:34:17 +00:00
Garrett Wollman
ee3c980de5 Some days, it just doesn't pay to get out of bed. Fix another broken
reference to the now-dead-for-real-this-time ia_next field.

Reminded by: Russell Vincent
1996-12-15 22:44:00 +00:00
Garrett Wollman
771f021675 Somehow the removal of ia_next didn't make it in the last time. Hope
it makes it in this time, and remember not to commit changes next time
late on a Friday evening!
1996-12-15 20:46:39 +00:00
Bruce Evans
cbf5d94928 Attempt to complete the fix in the previous revision. This version
fixes the problem reported by max.
1996-12-15 20:38:30 +00:00
John Dyson
97db6f8d69 Missing TAILQ mod. 1996-12-14 17:49:58 +00:00
Garrett Wollman
59562606b9 Convert the interface address and IP interface address structures
to TAILQs.  Fix places which referenced these for no good reason
that I can see (the references remain, but were fixed to compile
again; they are still questionable).
1996-12-13 21:29:07 +00:00
Garrett Wollman
294121822b Use queue macros for the list of interfaces. Next stop: ifaddrs! 1996-12-11 20:38:25 +00:00
Garrett Wollman
4963f4cd96 Include <net/if_arp.h> in the one header that requires it,
<netinet/if_ether.h>, rather than in <net/if.h>, most of whose callers
have no need of it.

Pointed-out-by:	bde
1996-12-11 17:46:33 +00:00
David Greenman
c7a6ccb33e Only pay attention to the offset and the IP_MF flag in ip_off. Pointed
out by Nathaniel D. Daw (daw@panix.com), but fixed differently by me.
1996-12-11 03:26:36 +00:00
Bill Fenner
2f1a0ba831 Allocate a header mbuf for the start of the encapsulated packet.
The rest of the code was treating it as a header mbuf, but it was
allocated as a normal mbuf.

This fixes the panic: ip_output no HDR when you have a multicast
tunnel configured.
1996-11-23 19:07:02 +00:00
Bill Fenner
254de4ea96 Reword two messages:
duplicate ip address 204.162.228.7! sent from ethernet address: 08:00:20:09:7b:1d
changed to
arp: 08:00:20:09:7b:1d is using my IP address 204.162.228.7!

and

arp info overwritten for 204.162.228.2 by 08:00:20:09:7b:1d
changed to
arp: 204.162.228.2 moved from 08:00:20:07:b6:a0 to 08:00:20:09:7b:1d

I think the new wordings are more clear and could save some support
questions.
1996-11-15 18:50:31 +00:00
Bruce Evans
ca5d5e7397 Forward-declare `struct inpcb' so that including this file doesn't cause
lots of warnings.

Should be in 2.2.   Previous version shouldn't have been in 2.2.
1996-11-12 10:02:09 +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
Bill Fenner
39172c9401 Re-enable the TCP SYN-attack protection code. I was the one who didn't
understand the socket state flag.

2.2 candidate.
1996-11-10 07:37:24 +00:00
Peter Wemm
37bd2b301c Fix braino on my part. When we have three different port ranges (default,
"high" and "secure"), we can't use a single variable to track the most
recently used port in all three ranges.. :-]  This caused the next
transient port to be allocated from the start of the range more often than
it should.
1996-10-30 06:13:10 +00:00
Bill Fenner
430d30d837 Don't allow reassembly to create packets bigger than IP_MAXPACKET, and count
attempts to do so.
Don't allow users to source packets bigger than IP_MAXPACKET.
Make UDP length and ipovly's protocol length unsigned short.

Reviewed by:	wollman
Submitted by:	(partly by) kml@nas.nasa.gov (Kevin Lahey)
1996-10-25 17:57:53 +00:00
Garrett Wollman
64682bc28a Give ip_len and ip_off more natural, unsigned types. 1996-10-23 18:35:50 +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
Bruce Evans
5e26bd9a05 Forward-declared `struct route' for the KERNEL case so that <net/route.h>
isn't a prerequisite.

Fixed style of ifdefs.
1996-10-15 16:54:47 +00:00
Bruce Evans
4458ac71b1 Removed nested include if <sys/socket.h> from <net/if.h> and
<net/if_arp.h> and fixed the things that depended on it.  The nested
include just allowed unportable programs to compile and made my
simple #include checking program report that networking code doesn't
need to include <sys/socket.h>.
1996-10-12 19:49:43 +00:00
Alexander Langer
bfcffdaf03 Log the interface name which received the packet.
Suggested by:	Hal Snyder <hsndyer@thoughtport.com>
1996-10-12 19:38:50 +00:00
Paul Traina
a51764a8bf Fix two bugs I accidently put into the syn code at the last minute
(yes I had tested the hell out of this).

I've also temporarily disabled the code so that it behaves as it previously
did (tail drop's the syns) pending discussion with fenner about some socket
state flags that I don't fully understand.

Submitted by:	fenner
1996-10-11 19:26:42 +00:00
Garrett Wollman
5893891624 All three files: make COMPAT_IPFW==0 case work again.
ip_input.c:
	- delete some dusty code
	- _IP_VHL
	- use fast inline header checksum when possible
1996-10-07 19:21:46 +00:00
David Greenman
6d6a026b47 Improved in_pcblookuphash() to support wildcarding, and changed relavent
callers of it to take advantage of this. This reduces new connection
request overhead in the face of a large number of PCBs in the system.
Thanks to David Filo <filo@yahoo.com> for suggesting this and providing
a sample implementation (which wasn't used, but showed that it could be
done).

Reviewed by:	wollman
1996-10-07 19:06:12 +00:00
Paul Traina
ebb0cbea75 Increase robustness of FreeBSD against high-rate connection attempt
denial of service attacks.

Reviewed by:	bde,wollman,olah
Inspired by:	vjs@sgi.com
1996-10-07 04:32:42 +00:00
Paul Traina
12eafeb016 I don't understand, I committed this fix (move a counter and fixed a typo)
this evening.

I think I'm going insane.
1996-09-21 06:39:20 +00:00
Andrey A. Chernov
96d719e6e0 Syntax error: so_incom -> so_incomp 1996-09-21 06:30:06 +00:00
Paul Traina
4195b4af58 If the incomplete listen queue for a given socket is full,
drop the oldest entry in the queue.

There was a fair bit of discussion as to whether or not the
proper action is to drop a random entry in the queue.  It's
my conclusion that a random drop is better than a head drop,
however profiling this section of code (done by John Capo)
shows that a head-drop results in a significant performance
increase.

There are scenarios where a random drop is more appropriate.
If I find one in reality, I'll add the random drop code under
a conditional.

Obtained from: discussions and code done by Vernon Schryver (vjs@sgi.com).
1996-09-20 21:25:18 +00:00
Paul Traina
9c4b2574d4 Handle ICMP codes defined in RFC1812 more appropriately 1996-09-20 08:23:54 +00:00
Paul Traina
561c2ad31c Move TCPCTL_KEEPINIT to end of MIB list (sigh) 1996-09-13 23:54:03 +00:00
Paul Traina
7b40aa327d Make the misnamed tcp initial keepalive timer value (which is really the
time, in seconds, that state for non-established TCP sessions stays about)
a sysctl modifyable variable.

[part 1 of two commits, I just realized I can't play with the indices as
 I was typing this commit message.]
1996-09-13 23:51:44 +00:00
Paul Traina
7ff19458de Receipt of two SYN's are sufficient to set the t_timer[TCPT_KEEP]
to "keepidle".  this should not occur unless the connection has
been established via the 3-way handshake which requires an ACK

Submitted by:	jmb
Obtained from:	problem discussed in Stevens vol. 3
1996-09-13 18:47:03 +00:00
Garrett Wollman
f87313106d Set subnetsarelocal to false. In a classless world, the other case
is almost never useful.  (This is only a quick hack; someone should
go back and delete the entire subnetsarelocal==1 code path.)
1996-09-09 20:17:24 +00:00
David Greenman
e7c819442a Dequeue mbuf before freeing it. Fixes mbuf leak and a potential crash when
handling IP fragments.

Submitted by:	Darren Reed <avalon@coombs.anu.edu.au>
1996-09-08 13:45:49 +00:00
Alexander Langer
80afcdeef5 Fix the visibility of the sysctl variables.
Submitted by:	phk
1996-08-31 21:05:20 +00:00
Søren Schmidt
8f52c18724 Oops, send the operation type, not the name to the NAT code... 1996-08-27 20:52:27 +00:00
Poul-Henning Kamp
321a284625 Mark sockets where the kernel chose the port# for.
This can be used by netstat to behave more intelligently.
1996-08-23 18:59:07 +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
Bill Fenner
e329301e65 Add #define's for RFC1716/RFC1812 new ICMP UNREACHABLE types.
Obtained from:	LBL's tcpdump distribution
1996-08-20 23:11:30 +00:00
Paul Traina
cc98643e68 Completely rewrite handling of protocol field for firewalls, things are
now completely consistent across all IP protocols and should be quite a
bit faster.

Discussed with: fenner & alex
1996-08-13 19:43:41 +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
Poul-Henning Kamp
26a8b0bf7e Megacommit to straigthen out ETHER_ mess.
I'm pretty convinced after looking at this that the majority of our
drivers are confused about the in/exclusion of ETHER_CRC_LEN :-(
1996-08-06 21:14:36 +00:00
Alexander Langer
71c011477f Filter by IP protocol.
Submitted by: fenner (with modifications by me)

Use a common prefix string for all warning messages generated during
ip_fw_ctl.
1996-08-05 02:35:04 +00:00
Garrett Wollman
5e2d069649 Eliminate some more references to separate ip_v and ip_hl fields. 1996-07-24 18:46:19 +00:00
Alexander Langer
c616bf2a71 Removed extraneous return. 1996-07-20 00:16:20 +00:00
Alexander Langer
889fe95791 Switch back to logging accepted packets with the text "Allow" instead
of "Accept"
1996-07-14 21:12:52 +00:00
David Greenman
af7a299930 Fixed two bugs in previous commit: be sure to include tcp_debug.h when
TCPDEBUG is defined, and fix typo in TCPDEBUG2() macro.
1996-07-12 17:28:47 +00:00
Bill Fenner
32bd8943f8 Fix braino in rev 1.30 fix; m_copy() the mbuf that has the header
pulled up already.  This bug can cause the first packet from a source
to a group to be corrupted when it is delivered to a process listening
on the mrouter.
1996-07-12 17:22:32 +00:00
Bruce Evans
6ab46d52a5 Don't use NULL in non-pointer contexts. 1996-07-12 04:12:25 +00:00
Garrett Wollman
2c37256e5a Modify the kernel to use the new pr_usrreqs interface rather than the old
pr_usrreq mechanism which was poorly designed and error-prone.  This
commit renames pr_usrreq to pr_ousrreq so that old code which depended on it
would break in an obvious manner.  This commit also implements the new
interface for TCP, although the old function is left as an example
(#ifdef'ed out).  This commit ALSO fixes a longstanding bug in the
TCP timer processing (introduced by davidg on 1995/04/12) which caused
timer processing on a TCB to always stop after a single timer had
expired (because it misinterpreted the return value from tcp_usrreq()
to indicate that the TCB had been deleted).  Finally, some code
related to polling has been deleted from if.c because it is not
relevant t -current and doesn't look at all like my current code.
1996-07-11 16:32:50 +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
Nate Williams
bce2d3379e Functionality for IPFIREWALL_VERBOSE logging:
- State when we've reached the limit on a particular rule in the kernel logfile
- State when a rule or all rules have been zero'd.

This gives a log of all actions that occur w/regard to the firewall
occurances, and can explain why a particular break-in attempt might not
get logged due to the limit being reached.

Reviewed by:	alex
1996-07-09 20:49:38 +00:00
Alexander Langer
32fb6c089b Reject rules which try to mix ports with incompatible protocols. 1996-06-29 03:33:20 +00:00
Alexander Langer
830b0d3039 Allow fragment checking to work with specific protocols.
Reviewed by:	phk

Reject the addition of rules that will never match (for example,
1.2.3.4:255.255.255.0).  User level utilities specify the policy by either
masking the IP address for the user (as ipfw(8) does) or rejecting the
entry with an error.  In either case, the kernel should not modify chain
entries to make them work.
1996-06-25 00:22:20 +00:00
Bruce Evans
7472e2e0f8 Use IPFIREWALL_MODULE instead of ACTUALLY_LKM_NOT_KERNEL to indicate
LKM'ness.  ACTUALLY_LKM_NOT_KERNEL is supposed to be so ugly that it
only gets used until <machine/conf.h> goes away.  bsd.kmod.mk should
define a better-named general macro for this.  Some places use
PSEUDO_LKM.  This is another bad name.

Makefile:
Added IPFIREWALL_VERBOSE_LIMIT option (commented out).
1996-06-23 14:28:02 +00:00
Peter Wemm
51a109a174 Set the rmx.rmx_expire to 0 when creating fake ethernet addresses for the
broadcast and multicast routes, otherwise they will be expired by
arptimeout after a few minutes, reverting to " (incomplete)". This makes
the work done by rev 1.27 stay around until the route itself is deleted.
This is mainly cosmetic for 'arp' and 'netstat -r'.
1996-06-21 21:45:58 +00:00
Bill Fenner
94334d8fc4 Use the route that's guaranteed to exist when picking a source address
for ARP requests.

The NetBSD version of this patch (see NetBSD PR kern/2381) has this change
already.  This should close our PR kern/1140 .

Although it's not quite what he submitted, I got the idea from him so
Submitted by:	Jin Guojun <jin@george.lbl.gov>
1996-06-20 22:53:08 +00:00
Bill Fenner
d7e74838d6 Remove one last rip_output from inetsw (gpalmer missed it in rev 1.30) 1996-06-20 17:52:32 +00:00
Nate Williams
17040b78cd Put the 'debug' messages of the type:
/kernel: in_rtqtimo: adjusted rtq_reallyold to 1066
  /kernel: in_rtqtimo: adjusted rtq_reallyold to 710
inside of #ifdef DIAGNOSTIC to avoid the support questions from folks
asking what this means.
1996-06-20 15:41:23 +00:00
Alexander Langer
6875d5c1b3 Fix chain numbering bug when the highest line number installed >= 65435
and the rule being added has no explicit line number set.

Submitted by:	Archie Cobbs <archie@whistle.com>
1996-06-17 00:00:35 +00:00
Garrett Wollman
51fb392203 Better selection of initial retransmit timeout when no cached
RTT information is available.

Submitted by: kbracey@art.acorn.co.uk (Kevin Bracey)
(slightly modified by me)
1996-06-14 17:17:32 +00:00
Gary Palmer
5d2541dab0 Don't try to include opt_ipfw.h in LKMs
Submitted by:	Ollivier Robert <roberto@keltia.freenix.fr>
1996-06-13 17:35:28 +00:00
David Greenman
34bed8b0ee Keep ether_type in network order for BPF to be consistent with other
systems.

Submitted by:	Ted Lemon, Matt Thomas, and others. Retrofitted for
		-current by me.
1996-06-13 02:54:19 +00:00
Gary Palmer
74a9466cc2 Convert ipfw to use opt_ipfw.h 1996-06-12 19:34:33 +00:00
Gary Palmer
c23670e294 Clean up -Wunused warnings.
Reviewed by:		bde
1996-06-12 05:11:41 +00:00
Alexander Langer
7a99108603 Big sweep over ipfw, picking up where Poul left off:
- Log ICMP type during verbose output.
  - Added IPFIREWALL_VERBOSE_LIMIT option to prevent denial of service
    attacks via syslog flooding.
  - Filter based on ICMP type.
  - Timestamp chain entries when they are matched.
  - Interfaces can now be matched with a wildcard specification (i.e.
    will match any interface unit for a given name).
  - Prevent the firewall chain from being manipulated when securelevel
    is greater than 2.
  - Fixed bug that allowed the default policy to be deleted.
  - Ability to zero individual accounting entries.
  - Remove definitions of old_chk_ptr and old_ctl_ptr when compiling
    ipfw as a lkm.
  - Remove some redundant code shared between ip_fw_init and ipfw_load.

Closes PRs: 1192, 1219, and 1267.
1996-06-09 23:46:21 +00:00
Bruce Evans
0453d3cbb3 Changed some memcpy()'s back to bcopy()'s.
gcc only inlines memcpy()'s whose count is constant and didn't inline
these.  I want memcpy() in the kernel go away so that it's obvious that
it doesn't need to be optimized.  Now it is only used for one struct
copy in si.c.
1996-06-08 08:19:03 +00:00
Garrett Wollman
c611d82e64 Instrument UDP PCB hashing to see how often the hash lookup is effective
for incoming packets.
1996-06-05 17:20:35 +00:00
Garrett Wollman
6da5712b60 Correct formula for TCP RTO calculation. Also try to do a better job in
filling in a new PCB's rttvar (but this is not the last word on the subject).
And get rid of `#ifdef RTV_RTT', it's been true for four years now...
1996-06-05 16:57:38 +00:00
John Polstra
588c92252f Fix a bug in the handling of the "persist" state which, under certain
circumstances, caused perfectly good connections to be dropped.  This
happened for connections over a LAN, where the retransmit timer
calculation TCP_REXMTVAL(tp) returned 0.  If sending was blocked by flow
control for long enough, the old code dropped the connection, even
though timely replies were being received for all window probes.

Reviewed by:	W. Richard Stevens <rstevens@noao.edu>
1996-06-03 15:37:52 +00:00
Gary Palmer
b750974745 Correct spelling error in comment 1996-06-02 00:15:19 +00:00
Peter Wemm
62d2e87ec1 More closely preserve the original operation of rresvport() when using
IP_PORTRANGE_LOW.
1996-05-31 05:11:22 +00:00
Garrett Wollman
f9493383fc Conditionalize calls to IPFW code on COMPAT_IPFW. This is done slightly
unconventionally:
	If COMPAT_IPFW is not defined, or if it is defined to 1, enable;
otherwise, disable.

This means that these changes actually have no effect on anyone at the
moment.  (It just makes it easier for me to keep my code in sync.)
In the future, the `not defined' part of the hack should be eliminated,
but doing this now would require everyone to change their config files.

The same conditionals need to be made in ip_input.c as well for this to
ave any useful effect, but I'm not ready to do that right now.
1996-05-22 17:23:09 +00:00
Peter Wemm
ce8c72b147 Fix an embarresing error on my part that made the IP_PORTRANGE options
return a failure code (even though it worked).
This commit brought to you by the 'C' keyword "break".. :-)
1996-05-21 20:47:31 +00:00
Garrett Wollman
82dab6ce62 Make it possible to return more than one piece of control information
(PR #1178).
Define a new SO_TIMESTAMP socket option for datagram sockets to return
packet-arrival timestamps  as control information (PR #1179).

Submitted by:	Louis Mamakos <loiue@TransSys.com>
1996-05-09 20:15:26 +00:00
Gary Palmer
b1e8a2c542 Remove useless entries from the inetsw structure initiliser which
only produced compile-time warnings.

Reviewed/Tested by: Bill Fenner <fenner@parc.xerox.com>
1996-05-08 04:34:03 +00:00
Gary Palmer
6ddbf1e299 Clean up various compiler warnings. Most (if not all) were benign
Reviewed by:	bde
1996-05-08 04:29:08 +00:00
Poul-Henning Kamp
83606d2247 Several locations in sys/netinet/ip_fw.c are lacking or incorrectly
use spl() functions.

Reviewed by:	phk
Submitted by:	Alex Nash <alex@zen.nash.org>
1996-05-06 20:31:04 +00:00
Garrett Wollman
9f9b3dc4ae Add three new route flags to help determine what sort of address
the destination represents.  For IP:

- Iff it is a host route, RTF_LOCAL and RTF_BROADCAST indicate local
  (belongs to this host) and broadcast addresses, respectively.

- For all routes, RTF_MULTICAST is set if the destination is multicast.

The RTF_BROADCAST flag is used by ip_output() to eliminate a call to
in_broadcast() in a common case; this gives about 1% in our packet-generation
experiments.  All three flags might be used (although they aren't now)
to determine whether a packet can be forwarded; a given host route can
represent a forwardable address if:

	(rt->rt_flags & (RTF_HOST | RTF_LOCAL | RTF_BROADCAST | RTF_MULTICAST))
	== RTF_HOST

Obviously, one still has to do all the work if a host route is not present,
but this code allows one to cache the results of such a lookup if rtalloc1()
is called without masking RTF_PRCLONING.
1996-05-06 17:42:13 +00:00
Bill Fenner
df5c0b8a7a Back out my stupid braino; I was thinking strlen and not sizeof. 1996-05-02 05:54:14 +00:00
Bill Fenner
af00f8007c Size temp var correctly; buf[4*sizeof "123"] is not long enough
to store "192.252.119.189\0".
1996-05-02 05:31:13 +00:00
Andrey A. Chernov
75cfc95fe2 inet_ntoa buffer was evaluated twice in log_in_vain, fix it.
Thanx to: jdp
1996-04-27 18:19:12 +00:00
Garrett Wollman
a2352fc148 Delete #ifdef notdef blocks containing old method of srtt calculation.
Requested by: davidg
1996-04-26 18:32:58 +00:00
Garrett Wollman
93902408b8 Delete #if 0 block containing remnants of pre-MTU discovery rmx_mtu
initialization.
1996-04-26 18:31:41 +00:00
Garrett Wollman
7c1c2d7ebd Delete #if 0 block containing unused definitions for ARPANET/DDN IMP
and HYPERchannel link layers.
1996-04-26 18:30:52 +00:00
Bruce Evans
e2184122c5 Fixed in-line IP header checksumming. It was performed on the wrong header
in one case.
1996-04-21 13:47:43 +00:00
Garrett Wollman
9c9137ea6c Three speed-ups in the output path (two small, one substantial):
1) Require all callers to pass a valid route pointer to ip_output()
   so that we don't have to check and allocate one off the stack
   as was done before.  This eliminates one test and some stack
    bloat from the common (UDP and TCP) case.

2) Perform the IP header checksum in-line if it's of the usual length.
    This results in about a 5% speed-up in my packet-generation test.

3) Use ip_vhl field rather than ip_v and ip_hl bitfields.
1996-04-18 15:49:06 +00:00
Garrett Wollman
61e5033f0a Define a few macros useful in the _IP_VHL case. 1996-04-18 15:42:50 +00:00
Garrett Wollman
dbe4b3f026 Fix a warning by not referencing ip_output() as a pr_output() member. 1996-04-18 15:41:51 +00:00
Garrett Wollman
2eba88186e Always call ip_output() with a valid route pointer. For igmp, also get the
multicast option structure off the stack rather than malloc.
1996-04-18 15:41:11 +00:00
David Greenman
2d8266af5c Two fixes from Rich Stevens:
1) Set the persist timer to help time-out connections in the CLOSING state.
2) Honor the keep-alive timer in the CLOSING state.

   This fixes problems with connections getting "stuck" due to incompletion
of the final connection shutdown which can be a BIG problem on busy WWW
servers.
1996-04-15 03:46:33 +00:00
Bruce Evans
c5294719c3 Eliminated sloppy common-style declarations. Now there are no duplicated
common labels for LINT.  There are still some common declarations for the
!KERNEL case in tcp_debug.h and spx_debug.h.  trpt depends on the ones in
tcp_debug.h.
1996-04-13 12:45:57 +00:00
Poul-Henning Kamp
539e53bad3 Fix a bogon I introduced with my last change.
Submitted by:	Andreas Klemm <andreas@knobel.gun.de>
1996-04-12 09:24:22 +00:00
Paul Traina
d78a37ad5a Logging UDP and TCP connection attempts should not be enabled by default.
It's trivial to create a denial of service attack on a box so enabled.

These messages, if enabled at all, must be rate-limited. (!)
1996-04-09 07:01:53 +00:00
David Greenman
c655b7c4f4 Added proper splnet protection while modifying the interface address list.
This fixes a panic that occurs when ifconfig ioctl(s) were interrupted
by IP traffic at the wrong time - resulting in a NULL pointer dereference.
This was originally noticed on a FreeBSD 1.0 system, but the problem still
exists in current sources.
1996-04-07 06:59:52 +00:00
Poul-Henning Kamp
34be9bf3ce Add a sysctl (net.inet.tcp.always_keepalive: 0) that when set will force
keepalive on all tcp sessions.  Setsockopt(2) cannot override this setting.
Maybe another one is needed that just changes the default for SO_KEEPALIVE ?
Requested by: Joe Greco <jgreco@brasil.moneng.mei.com>
1996-04-04 11:17:04 +00:00
Poul-Henning Kamp
816a3d836e Log TCP syn packets for ports we don't listen on.
Controlled by: sysctl net.inet.tcp.log_in_vain: 1

Log UDP syn packets for ports we don't listen on.
Controlled by: sysctl net.inet.udp.log_in_vain: 1

Suggested by:	Warren Toomey <wkt@cs.adfa.oz.au>
1996-04-04 10:46:44 +00:00
Garrett Wollman
d3d20ad196 Always pass a route structure when calling ip_output(). 1996-04-03 18:52:22 +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
Poul-Henning Kamp
7e6f7714ce Fix two cases where ia->ia_ifp could be NULL. 1996-04-02 12:26:10 +00:00
Garrett Wollman
ebcae94e4f In tcp_respond(), check that ro->ro_rt is non-null before RTFREEing
it.
1996-03-27 18:23:16 +00:00
Bill Fenner
e62b8c4939 Make rip_input() take the header length
Move ipip_input() and rsvp_input() prototypes to ip_var.h
Remove unused prototype for rip_ip_input() from ip_var.h
Remove unused variable *opts from rip_output()
1996-03-26 19:16:46 +00:00
Bill Fenner
fbc6ab006d Add missing splx(s) in IP_MULTICAST_IF
Submitted by:	Jim Binkley <jrb@cs.pdx.edu>
1996-03-26 18:56:51 +00:00
Garrett Wollman
9e2874b067 Slight modification of RTO floor calculation. 1996-03-25 20:13:21 +00:00
Poul-Henning Kamp
6ed666afb9 Check the validity of ia->ia_ifp before we dereference it. 1996-03-25 17:41:23 +00:00
Bill Fenner
203f0c075f Send ARP's for aliased subnets with the proper source address.
Get rid of ac->ac_ipaddr and arpwhohas() since they assume that
an interface has only one address.

Obtained from:	BSD/OS 2.1, via Rich Stevens <rstevens@noao.edu>
1996-03-23 01:32:30 +00:00
Garrett Wollman
9512fd2ec6 Make sure tcp_respond() always calls ip_output() with a valid
route pointer.  This has no effect in the current ip_output(),
but my version requires that ip_output() always be passed a route.
1996-03-22 18:11:25 +00:00
Garrett Wollman
233e8c18e8 A number of performance-reducing flaws fixed based on comments
from Larry Peterson &co. at Arizona:

- Header prediction for ACKs did not exclude Fast Retransmit/Recovery.
- srtt calculation tended to get ``stuck'' and could never decrease
  when below 8.  It still can't, but the scaling factors are adjusted
  so that this artifact does not cause as bad an effect on the RTO
  value as it used to.

The paper also points out the incr/8 error that has been long since fixed,
and the problems with ACKing frequency resulting from the use of options
which I suspect to be fixed already as well (as part of the T/TCP work).

Obtained from:	Brakmo & Peterson, ``Performance Problems in BSD4.4 TCP''
1996-03-22 18:09:21 +00:00
Bill Fenner
ac0aa47369 Allow SIOCGIFBRDADDR and SIOCGIFNETMASK to return information about
aliases, if the alias address was passed in the struct ifreq.
Default to first address on the list, for backwards compatibility.
1996-03-15 17:08:07 +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
Paul Traina
072b9b24e3 Fix ip option processing for raw IP sockets. This whole thing is a compromise
between ignoring options specified in the setsockopt call if IP_HDRINCL is set
(the UCB choice when VJ's code was brought in) vs allowing them (what everyone
else did, and what is assumed by programs everywhere...sigh).

Also perform some checking of the passed down packet to avoid running off
the end of a mbuf chain.

Reviewed by:	fenner
1996-03-13 08:02:45 +00:00
Bill Fenner
a5a2f8adf3 Cleaned up uninitialized 'rt' warning properly
Make a copy of the header of a packet that gets queued due to
 lack of forwarding cache entry, so that nobody else can step
 on it.  Thanks to Mike Karels <karels@bsdi.com> for pointing
 this one out.
1996-03-11 17:11:23 +00:00
David Greenman
2ee45d7d28 Move or add #include <queue.h> in preparation for upcoming struct socket
changes.
1996-03-11 15:13:58 +00:00
Peter Wemm
4bd4912865 Add more options into the conf/options and i386/conf/options.i386 files
and the #include hooks so that 'make depend' is more useful.  This
covers most of the options I regularly use (but not all) and some other
easy ones.
1996-03-02 18:24:13 +00:00
Poul-Henning Kamp
827bc33af4 Forgot to remove this file. 1996-02-28 13:30:14 +00:00
Bruce Evans
3420f4ab37 Spell tcp_listendrop consistently so that tcp_input.c and netstat compile. 1996-02-27 15:12:53 +00:00
Guido van Rooij
1347f5b8e5 Add a counter for the number of times the listen queue was overflowed to
the tcpstat structure. (netstat -s)
Reviewed by:	wollman
Obtained from: Steves, TCP/IP Ill. vol.3, page 189
1996-02-26 21:47:13 +00:00
Poul-Henning Kamp
ae2a1587f0 Fix wrong logic, certain rules never matched. 1996-02-26 15:28:15 +00:00
Poul-Henning Kamp
09bb5f7589 Make getsockopt() capable of handling more than one mbuf worth of data.
Use this to read rules out of ipfw.
Add the lkm code to ipfw.c
1996-02-24 13:38:28 +00:00
Poul-Henning Kamp
b83e431483 The new firewall functionality:
Filter on the direction (in/out).
	Filter on fragment/not fragment.
1996-02-24 00:17:35 +00:00
Poul-Henning Kamp
a2ebc3ee0f I overlooked this one. 1996-02-23 20:11:37 +00:00
Poul-Henning Kamp
e7319bab6b Big sweep over the IPFIREWALL and IPACCT code.
Close the ip-fragment hole.
Waste less memory.
Rewrite to contemporary more readable style.
Kill separate IPACCT facility, use "accept" rules in IPFIREWALL.
Filter incoming >and< outgoing packets.
Replace "policy" by sticky "deny all" rule.
Rules have numbers used for ordering and deletion.
Remove "rerorder" code entirely.
Count packet & bytecount matches for rules.

Code in -current & -stable is now the same.
1996-02-23 15:47:58 +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
David Greenman
f9d5a964af Fixed bug in Path MTU Discovery that caused the system to have to re-
discover the Path MTU for each connection if the connecting host didn't
offer an initial MSS.

Submitted by:	davidg & olah
1996-02-22 11:46:39 +00:00
Bill Fenner
7d1ba41375 Make the "arpresolve: can't allocate llinfo" error message
more useful by printing out the IP address it was trying to
resolve, since we're seeing so many complaints about this
error.
1996-02-20 17:54:17 +00:00
Garrett Wollman
4de31ee58e #if out unsupported IMP code. 1996-02-08 15:43:35 +00:00
Garrett Wollman
c67b1d17da Provide a direct entry point for IP input. This actually results
in a slight decrease in performance, but will lead to better
performance later.
1996-02-05 20:36:02 +00:00
Garrett Wollman
cbb0b46ab7 Fill in the corresponding ether address of multicast and broadcast
pseudo-``ARP entries'' so arp(8) doesn't show them as `unresolved'.
1996-02-05 18:04:30 +00:00
Poul-Henning Kamp
821c204e91 Make the sorting of IPFW rules an option. You don't want it to sort them.
>>>WARNING<<<  you may have to revisit your firewall setup.
1996-02-03 11:48:12 +00:00
Andras Olah
07e43e10f8 Fix a bug related to the interworking of T/TCP and window scaling:
when a connection enters the ESTBLS state using T/TCP, then window
scaling wasn't properly handled.  The fix is twofold.

1) When the 3WHS completes, make sure that we update our window
scaling state variables.

2) When setting the `virtual advertized window', then make sure
that we do not try to offer a window that is larger than the maximum
window without scaling (TCP_MAXWIN).

Reviewed by:	davidg
Reported by:	Jerry Chen <chen@Ipsilon.COM>
1996-01-31 08:22:24 +00:00
Mike Pritchard
6c5e9bbdf5 Fix a bunch of spelling errors in the comment fields of
a bunch of system include files.
1996-01-30 23:02:38 +00:00
Poul-Henning Kamp
18b7be4064 The last part of the ether_sprint -> %6D change.
Sorry for the delay.
(%D is for hexdumping.)
1996-01-26 09:29:29 +00:00
Poul-Henning Kamp
1ce9bf88c3 Use new printf features rather than local kludges. 1996-01-24 21:12:23 +00:00
Bill Fenner
4dde4205e1 First piece of fixing ppp/proxy arp problem:
If an attempt to add a route fails because an "ARP table" entry is in
the way, remove the ARP entry and retry the add.

Reviewed by:	nate
1996-01-23 05:15:30 +00:00
Peter Wemm
34da58488d remove tcp_lastport - it has not been used for quite a while (at least
since the hashed pcb's I think).
1996-01-19 08:02:34 +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
Bill Fenner
4840541232 Add definitions for ICMP router discovery.
Reviewed by:	wollman
1996-01-19 01:19:08 +00:00
Andras Olah
81165e4880 Be more conservative when T/TCP extensions are disabled. In particular,
do not send data and/or FIN on SYN segments in this case.
1996-01-17 09:35:23 +00:00
David Greenman
ce00153c1f Fix logic bug (!= should be ==) in recent P2P/multicast kludge.
Reviewed by:	Bill Fenner <fenner@parc.xerox.com>
Submitted by:	Dave Marquardt <marquard@austin.ibm.com>
1996-01-09 08:26:07 +00:00
Guido van Rooij
8dd27fd68b Fix a bug where having a process listening to both a INADDR_ANY and a
local address, that was assigned with ifconfig alias and netmask
0xffffffff, would receive duplictae udp packets.
This behaviour can easily be seen by having named run, and using the alias
address as the name server.
This solution is not the pretiest one, but after talk with Garreth, it
is seen as the most easy one.
1996-01-08 20:59:06 +00:00
Garrett Wollman
d4fb926c62 Finally demolished the last, tottering remnants of GATEWAY. If you want
to enable IP forwarding, use sysctl(8).  Also did the same for IPX,
which involved inventing a completely new MIB from whole cloth (which
I may not quite have correct); be aware of this if you use IPX forwarding.
(The two should never have been controlled by the same option anyway.)
1996-01-05 20:47:05 +00:00
Andras Olah
74b48c1de1 Reverse the modification which caused the annoying m_copydata crash: set
the TF_ACKNOW flag when the REXMT timer goes off to force a
retransmission.  In certain situations pulling snd_nxt back to snd_una
is not sufficient.
1996-01-04 21:34:21 +00:00
Garrett Wollman
33d06b436b Try to make multicast routing work correctly over point-to-point
links (which was broken previously by the support for half-routers).

Submitted by:	Bill Fenner <fenner@parc.xerox.com>
1996-01-03 20:24:33 +00:00
David Greenman
858c045f77 Remove some bogus externs. 1995-12-29 01:12:02 +00:00
Garrett Wollman
1814a725c2 If _IP_VHL is defined, declare a single ip_vhl member in struct ip rather
than separate ip_v and ip_hl members.  Should have no effect on current code,
but I'd eventually like to get rid of those obnoxious bitfields completely.
1995-12-21 21:20:27 +00:00
Garrett Wollman
3dbdcb2c95 Delete old-style-broadcast-address compatibility cruft in IP input path.
If users want to use the old-style broadcast addresses, they will have to
currectly configure their systems.
1995-12-21 21:12:22 +00:00
Garrett Wollman
602d513c5a in_proto.c: spell ``Internet'' right and put whitespace after commas.
others: start to populate the link-layer branch of the net mib, by
moving ARP to its proper place.  (ARP is not a protocol family, it's an
interface layer between a medium-access layer and a protocol family.)
sysctl(8) needs to be taught about the structure of this branch, unless
Poul-Henning implements dynamic MIB exploration soon.
1995-12-20 21:53:53 +00:00
Garrett Wollman
b97d15cbb7 Demolish DIRECTED_BROADCAST. It was always a bad idea, and nobody uses it. 1995-12-20 18:04:19 +00:00
Garrett Wollman
bda4c85ae6 Fix a nagging divide-by-zero error resulting from the MTU discovery code
getting triggered at a bad time.
1995-12-20 17:42:28 +00:00
Garrett Wollman
994fdef98a Added a comment about why trying to make a one-behind cache for
the route in ip_output() is a bad idea.
1995-12-19 21:24:19 +00:00
Garrett Wollman
ce29ab3ac6 Actually call in_rtqdrain()as was originally intended. 1995-12-19 20:46:15 +00:00
Bruce Evans
b62d102cbb Uniformized pr_ctlinput protosw functions. The third arg is now `void
*' instead of caddr_t and it isn't optional (it never was).  Most of the
netipx (and netns) pr_ctlinput functions abuse the second arg instead of
using the third arg but fixing this is beyond the scope of this round
of changes.
1995-12-16 02:14:44 +00:00
Bruce Evans
081d3b932c Added a prototype. 1995-12-16 00:05:40 +00:00
Poul-Henning Kamp
f708ef1b9e Another mega commit to staticize things. 1995-12-14 09:55:16 +00:00
Poul-Henning Kamp
f6d24a780b Staticize. 1995-12-09 20:43:53 +00:00
Poul-Henning Kamp
885f1aa42b Remove old ballast, clean up a little bit, staticize.
Add five sysctl variables that you should probably never tweak.
	net.arp.t_prune: 300
	net.arp.t_keep: 1200
	net.arp.t_down: 20
	net.arp.maxtries: 5
	net.arp.useloopback: 1
	net.arp.proxyall: 0

(It's net.arp because arp isn't limited to inet, though our present
implementation surely is).
1995-12-09 16:06:54 +00:00
Garrett Wollman
be070f4335 Added a conditionalized printf for debugging MTU discovery. 1995-12-08 16:46:06 +00:00
Bruce Evans
2baeef32b6 Removed unnecessary #includes of vm stuff. Most of them were once
prerequisites for <sys/sysctl.h>.

subr_prof.c:
Also replaced #include of <sys/user.h> by #include of <sys/resourcevar.h>.
1995-12-06 23:37:44 +00:00
Bruce Evans
f1844d4cdf Added explicit include of <sys/queue.h>. Currently, some things only
compile because <vm/vm.h> happens to be gratuitously included before
<netinet/in_pcb.h> and <vm/vm.h> happens to include <sys/queue.h>.
1995-12-05 21:26:34 +00:00
Garrett Wollman
b7a44e3486 Path MTU Discovery is now standard. 1995-12-05 17:46:50 +00:00
David Greenman
4a5f1499b0 all:
Removed ifnet.if_init and ifnet.if_reset as they are generally unused.
Change the parameter passed to if_watchdog to be a ifnet * rather than
a unit number. All of this is an attempt to move toward not needing an
array of softc pointers (which is usually static in size) to point to
the driver softc.

if_ed.c:
Changed some of the argument passing to some functions to make a little
more sense.

if_ep.c, if_vx.c:
Killed completely bogus use of if_timer. It was being set in such a way
that the interface was being reset once per second (blech!).
1995-12-05 02:01:59 +00:00
Bruce Evans
ce7609a49c Completed function declarations and/or added prototypes. 1995-12-02 19:38:06 +00:00