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563 Commits

Author SHA1 Message Date
bad 6b30aed924 Fix thinko of mine in previous. The source route info is not at m->m_data 
after various m_adj()s have been done.  Kludge around this with a cheesy
macro that knows where the drivers put the mac header in the first mbuf.

XXX There should be a better way to do this.
 1999-05-30 00:39:07 +00:00
bad 0b3a9f9e00 Don't assume the Token-Ring source route is in the m_pktdat. Use 
m_data instead.  This isn't a problem with ARP packets but is correct
way to this.

Noticed by pmara@cactus.org (Shashi Mara).
 1999-05-29 22:36:07 +00:00
ad ccc7e59e1f Add new sysctl (net.inet.tcp.log_refused) that when set, causes refused TCP 
connections to be logged.
 1999-05-23 20:33:50 +00:00
ad bdf1938edd For completeness sake, allow this to compile with no loopback interfaces 
configured.
 1999-05-23 20:21:51 +00:00
thorpej 788dee365c Sigh, fix some broken logic in the last change to INADDR_TO_IA(), and make 
the macro a little more obvious.  Should fix kern/7589, from Jens A Nilsson.
 1999-05-16 19:33:27 +00:00
is 7807c9a493 Fixes PR 7489 by Olaf Seibert. Fix by Zdenek Salvet (PR 7497). 1999-05-04 20:50:35 +00:00
hwr d313e75afe It does not make much sense to increase a "output" counter on input. 1999-05-04 20:13:09 +00:00
hwr 3fa094f8b5 Don't let packets with a Class-D source address escape the host. 
Fixes second half of kern/7003 by Jonathan Stone <jonathan@DSG.Stanford.EDU>.
 1999-05-04 19:50:23 +00:00
is 7470bd006a Fix for PR 7490 by Olaf Seibert, fix mostly from PR 7497 bei Zdenek Salvet, 
but with more verbose error messages.
 1999-05-04 14:58:27 +00:00
thorpej 3faa72bd56 Fix an ininitialized variable that the MIPS compiler caught (but the 
SPARC, Alpha, Arm, and i386 compilers missed).
 1999-05-03 23:30:27 +00:00
thorpej a40dff106e In INADDR_TO_IA(), skip interfaces which are not up. Revert previous change 
to ip_input.c to check the interface status after INADDR_TO_IA().

Fix cooked up by Heiko Rupp and myself.

Fixes PR 7480.
 1999-05-03 22:12:44 +00:00
hwr 33a8a5933b Drop packets, that have a Class-D address as source address. 
Implements the first half of PR 7003.
 1999-05-03 21:14:47 +00:00
thorpej 2cd33a0ce1 Implement retransmit logic for the SYN cache engine. Fixes a rare condition 
where one side can think a connection exists, where the other side thinks
the connection was never established.

The original problem was first reported by Ty Sarna in PR #5909.  The
original fix I made to the code didn't cover all cases.  The problem this
fix addresses was reported by Christoph Badura via private e-mail.

Many thanks to Bill Sommerfeld for helping me to test this code, and
for finding a subtle bug.
 1999-04-29 03:54:22 +00:00
hwr fb7871d6b2 If the incoming code value is 0, timer gets 0, which would mean 
a divide by zero afterwards.
This is also, what Bill Fenner seems to have done in the FreeBSD igmp
code.
This should fix kern/6541.
 1999-04-25 10:26:29 +00:00
simonb be3adbebcc Don't extern sb_max, <sys/socketvar.h> provides a definition. 1999-04-22 01:32:30 +00:00
kml a7f8ef5e9b Ensure that out of window SYNs receive an ACK in responce, rather than 
being dropped.  This fixes a bug reported by Jason Thorpe.
 1999-04-09 22:01:07 +00:00
proff 8775e52947 tiny KNF change 1999-04-07 05:34:32 +00:00
proff ae938abb49 Prevent reception of packets on downed interfaces (via an up interface). 
fixes kern/7327
 1999-04-07 02:31:05 +00:00
tron 1b27086b7e - Make sure that interface can't be marked up before a route to the remote 
tunnel end was found.
- Flush route and reset MTU if interface is marked down.
 1999-04-04 09:10:27 +00:00
tron ef85f04fcb Avoid kernel panic if interface is configured before a route to the 
remote of the tunnel can be found.

XXX If you manually mark the interface as "UP" and set the MTU later
XXX sending a packet will still cause a kernel panic.
 1999-04-04 00:21:53 +00:00
hwr 3f5c626e42 Setting of source and destination IP is not done by 
passing SIOCSIFADDR/SIOIFDSTADDR, but by passing the addresses in
the appropriate structs.
One of the mysteries of ifconfig IMHO...

Should fix kern/6899.
 1999-04-02 20:39:23 +00:00
mycroft 742a052418 Fix a null pointer dereference in the case where forwarding is turned on and 
there are interfaces up but with no addresses.
 1999-03-30 19:02:56 +00:00
nathanw 9c6754cd69 Alpha printf format fixes. 
Closes PR kern/7258.
 1999-03-27 21:47:59 +00:00
aidan da1b3a7abf Added per-addr input/output statistics. Currently just support netatalk 
and netinet, currently only tested under netinet.

Disabled by default, enabled by compiling the kernel with option
IFA_STATS.  Enabling this feature seems to make the ip_output function
take 13% longer than before, which should be OK for people that need
this feature.
 1999-03-27 01:24:49 +00:00
proff 85ab19698a security: test for ip_len < ip_hl <<2 and drop packet accordingly 1999-03-26 08:51:35 +00:00
lukem 8a931fcdd8 Ensure that you can only bind a more specific address when it is done by the 
same uid or by root.

This code is from FreeBSD. (Whilst it was originally obtained from OpenBSD,
FreeBSD fixed it to work with multicast. To quote the commit message:
    - Don't bother checking for conflicting sockets if we're binding to a
      multicast address.
    - Don't return an error if we're binding to INADDR_ANY, the conflicting
      socket is bound to INADDR_ANY, and the conflicting socket has
      SO_REUSEPORT set.
)
 1999-03-23 10:45:37 +00:00
bad a5283c98c0 Add support for Token-Ring source routes in the ARP cache. 
By Onno van der Linden.
 1999-03-22 22:30:42 +00:00
perry d446fb449c exterminate ovbcopy. patches provided by Erik Bertelsen, pr-7145 1999-03-12 22:42:30 +00:00
mycroft c6d172438d Minor cleanup to use LONG_SUM() and CALC_SUMD() more. 1999-03-05 07:27:09 +00:00
explorer cff4c9630b Don't mix in data just to stir the rnd pool. Extracting data will do that, 
any network packets received might, too, so this is already taken care of.
 1999-02-28 13:41:24 +00:00
drochner 918dfd95e1 -always do an RARP if revarpwhoarewe() is called, it might be for another 
interface or the server's configuration has changed
-g/c revarpwhoami()
 1999-02-21 15:17:14 +00:00
matt 7ebd19d744 According to Dave Borman, the iss should be using snd_nxt and not rcv_nxt 
(from tcp_impl mailing-list).
 1999-02-05 22:37:24 +00:00
explorer 25d32ef34d REALLY only update the window when we get an ACK. (the old code seemed broken) 1999-02-04 22:58:37 +00:00
cjs 8befad84b1 Remove SCCS markers and make these compile in $NetBSD$ IDs. 1999-02-02 19:57:30 +00:00
thorpej a350d7b28b Set the tunnel destination address correctly. Should fix PR #6899. 1999-02-02 07:20:13 +00:00
marc 5f688e6632 remove gre_softc declaration; the symbol is no longer used in this 
file.
 1999-02-02 07:10:45 +00:00
mycroft 5e373d307f Clear mfchashtbl after it's deallocated, to kill a stray pointer. Fixes PR 
5400.
 1999-02-01 15:09:46 +00:00
thorpej a22cfcf3d4 Make programs that use raw IP work again; trim the header length from ip_len 
before handing the packet off to the socket.
 1999-01-30 21:43:16 +00:00
itohy 7751c2e2eb ~htons(...) is always negative. 1999-01-28 21:29:27 +00:00
thorpej 6c30816c15 Fix a slight error in previous. Rearrange some code in tcp_respond() so 
that a DIAGNOSTIC check against the destination address is actually
checking the destination address.  "oops."
 1999-01-26 08:28:50 +00:00
mycroft 8ede79f2b4 One more tweak to the checksum hack, and I promise I'm done. B-) 1999-01-25 15:53:29 +00:00
mycroft 50438b6df0 Absolutely minor tweak to generate better code. 1999-01-25 15:36:50 +00:00
mycroft 70e6acdfef Update the comment about the checksum hack. It was way out of date. 1999-01-24 13:34:35 +00:00
mycroft 94895652e1 Modify the checksum slightly so that the htons()s can all be combined. 1999-01-24 12:57:38 +00:00
thorpej a58f271406 Oops, forgot to update copyright notice in previous. 1999-01-24 01:21:18 +00:00
thorpej 86e2c3fbc6 * Completely rewrite syn_cache_respond(). 
- Don't use tcp_respond(), instead create the tcp/ip header from scratch,
and send it ourself.
- Reuse the mbuf that carried the SYN, or allocate one if that is not
available.
- Cache the route we look up to do the Path MTU Discovery check, and
transfer the reference to that route to the inpcb when the connection
completes.
* Macro'ize a small, but often repeated code fragment.
 1999-01-24 01:19:28 +00:00
mycroft b790730226 Fix problems with fr_tcpsum() that prevented the FTP proxy from working. 1999-01-23 08:50:52 +00:00
thorpej a43786143f Fix a problem pointed out by Charles Hannum; DF wasn't being set in 
SYN,ACK packets during Path MTU Discovery.  Fix tcp_respond() to do the
appropriate route lookup and set DF as appropriate.

Also, fixup similar code in tcp_output() to relookup the route if it
is down.
 1999-01-20 03:39:54 +00:00
mycroft 231a906c71 There's just no plausible reason to byte-swap ip_id internally. It's opaque. 1999-01-19 23:39:56 +00:00
mycroft 7eeb5a04da Don't screw with ip_len; just subtract from it where we actually use the 
value.
 1999-01-19 23:03:20 +00:00