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
a40dff106e
In INADDR_TO_IA(), skip interfaces which are not up. Revert previous change
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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
33a8a5933b
Drop packets, that have a Class-D address as source address.
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Implements the first half of PR 7003.
1999-05-03 21:14:47 +00:00
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
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
be3adbebcc
Don't extern sb_max, <sys/socketvar.h> provides a definition.
1999-04-22 01:32:30 +00:00
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
8775e52947
tiny KNF change
1999-04-07 05:34:32 +00:00
ae938abb49
Prevent reception of packets on downed interfaces (via an up interface).
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fixes kern/7327
1999-04-07 02:31:05 +00:00
1b27086b7e
- Make sure that interface can't be marked up before a route to the remote
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tunnel end was found.
- Flush route and reset MTU if interface is marked down.
1999-04-04 09:10:27 +00:00
ef85f04fcb
Avoid kernel panic if interface is configured before a route to the
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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
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
742a052418
Fix a null pointer dereference in the case where forwarding is turned on and
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there are interfaces up but with no addresses.
1999-03-30 19:02:56 +00:00
9c6754cd69
Alpha printf format fixes.
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Closes PR kern/7258.
1999-03-27 21:47:59 +00:00
da1b3a7abf
Added per-addr input/output statistics. Currently just support netatalk
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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
85ab19698a
security: test for ip_len < ip_hl <<2 and drop packet accordingly
1999-03-26 08:51:35 +00:00
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
a5283c98c0
Add support for Token-Ring source routes in the ARP cache.
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By Onno van der Linden.
1999-03-22 22:30:42 +00:00
d446fb449c
exterminate ovbcopy. patches provided by Erik Bertelsen, pr-7145
1999-03-12 22:42:30 +00:00
c6d172438d
Minor cleanup to use LONG_SUM() and CALC_SUMD() more.
1999-03-05 07:27:09 +00:00
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
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
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
25d32ef34d
REALLY only update the window when we get an ACK. (the old code seemed broken)
1999-02-04 22:58:37 +00:00
8befad84b1
Remove SCCS markers and make these compile in $NetBSD$ IDs.
1999-02-02 19:57:30 +00:00
a350d7b28b
Set the tunnel destination address correctly. Should fix PR #6899 .
1999-02-02 07:20:13 +00:00
5f688e6632
remove gre_softc declaration; the symbol is no longer used in this
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file.
1999-02-02 07:10:45 +00:00
5e373d307f
Clear mfchashtbl after it's deallocated, to kill a stray pointer. Fixes PR
...
5400.
1999-02-01 15:09:46 +00:00
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
7751c2e2eb
~htons(...) is always negative.
1999-01-28 21:29:27 +00:00
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
8ede79f2b4
One more tweak to the checksum hack, and I promise I'm done. B-)
1999-01-25 15:53:29 +00:00
50438b6df0
Absolutely minor tweak to generate better code.
1999-01-25 15:36:50 +00:00
70e6acdfef
Update the comment about the checksum hack. It was way out of date.
1999-01-24 13:34:35 +00:00
94895652e1
Modify the checksum slightly so that the htons()s can all be combined.
1999-01-24 12:57:38 +00:00
a58f271406
Oops, forgot to update copyright notice in previous.
1999-01-24 01:21:18 +00:00
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
b790730226
Fix problems with fr_tcpsum() that prevented the FTP proxy from working.
1999-01-23 08:50:52 +00:00
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
231a906c71
There's just no plausible reason to byte-swap ip_id internally. It's opaque.
1999-01-19 23:39:56 +00:00
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
d3ea3de1af
Fix byte-swapping of ip_len in returned IP header.
1999-01-19 22:10:42 +00:00
fc1211a6ab
Don't overwrite the checksum fields when checking them. There's no reason to
...
do this, and it screws up ICMP replies.
XXX The returned IP checksum and length are still wrong.
1999-01-19 21:58:40 +00:00
4b0e6bb4dc
Domains are associated with protocol families, not address families.
1999-01-14 01:16:55 +00:00
98d3903da8
Use the count supplied to the pseudo-device attach routine to dynamically
...
allocate (once) the ipip_softc array; don't assume NIPIP contains the count.
1999-01-13 23:01:20 +00:00
555784ccd5
Fix byte order and ip_len inconsistencies in ICMP reply code. Also, fix
...
some formatting and HTONS(foo) vs. foo = htons(foo) inconsistencies.
PR #6602 , Darren Reed.
1999-01-11 22:35:06 +00:00
6ae68b4feb
Pull the IP-in-IP tunneling support out of the GRE code. It's not handled
...
by a separate IP-IP input path.
XXX Should eventually do the same thing for IPPROTO_MOBILE.
1999-01-11 21:32:13 +00:00
9508f259bf
Adjust for the new IP-IP input path. mrt_ipip_input() is called from
...
ipip_input(), and returns non-zero if mrt_ipip_input() handled the
packet.
XXX Eventually, the multicast code should probably use regular IP-IP
XXX `interfaces', but mrouted knows about the VIF table, etc.
1999-01-11 21:31:03 +00:00
9d996b9e4e
Adjust for the new IP-IP input path.
1999-01-11 21:28:28 +00:00
9f9be750f6
Separate out the IP-in-IP implementation from the GRE code. This cleans
...
up the interface to ip_mroute.c somewhat, and properly separates IP-IP
from GRE. (They are similar, but they are different protocols, and should
not be implemented in the same place.)
1999-01-11 21:26:53 +00:00
5f69dedb2c
ipip_input() -> mrt_ipip_input().
1998-12-22 02:51:32 +00:00
54377d1212
Simplify the tunnel lookup routine.
1998-12-22 01:49:04 +00:00
12632ebf71
Reverse the copyright-notice-swap. It went against existing practice.
1998-12-19 02:46:12 +00:00
4f177aec90
Add a lock around the TCPCB's sequence queue, to prevent tcp_drain()
...
from corrupting the queue if called from a device's interrupt context.
Similar in nature to the problem reported in PR #5684 .
1998-12-18 21:38:02 +00:00
ca15e01c76
Add a lock around the IP fragment reassembly queue, to prevent ip_drain()
...
from corrupting the queue if called from a device's interrupt context.
Should fix PR #5684 .
1998-12-18 21:35:11 +00:00
93454aafc6
Delay sending if SS_MORETOCOME is set in so_state. This avoids the case
...
where the user issued a write with a length greater than MLEN but less
than MINCLSIZE, thus causing two mbufs to be used. The loop in sosend()
would then call PRU_SEND twice, causing TCP to transmit 2 packets when
it could have transmitted one.
Suggested by Justin Walker <justin@apple.com> on the freebsd-net
mailing list.
1998-12-16 00:33:14 +00:00
2f2fd097ef
remove this insanity. appeared with ipfilter 3.2.10...
1998-12-11 23:47:16 +00:00
914642e439
correction to the previous: protect against _LKM too
...
pointed out by Todd Whitesel <toddpw@best.com>
1998-12-11 11:57:33 +00:00
36b809fed6
correcton tp previous: don't try to include kernel option headers in
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userland
fixes PR kern/6561 (Takahiro Kambe)
1998-12-11 09:15:42 +00:00
ce96f9960a
defopt IPFILTER_LOG
1998-12-10 15:50:59 +00:00
c7578c510a
defopt
1998-12-10 11:01:01 +00:00
a94214bdd0
add a patch from darren reed, to make ipfilter use our cksum routine.
1998-11-26 12:21:47 +00:00
0cdf66e377
Fragments should start with a header mbuf allocated by MGETHDR()
1998-11-25 21:13:58 +00:00
4dd9bebb58
add two more prototypes. noted missing by mjacob.
1998-11-22 23:30:36 +00:00
78db9d7d95
merge ipf 3.2.10
1998-11-22 15:17:18 +00:00
0cd1643609
if INADDR_ANY is given in in_pcbconnect(), choose the ia_addr of the first
...
interface, not the ia_broadaddr. should fix [standards/5645] and [kern/6425]
1998-11-16 05:47:19 +00:00
1658ac64a8
fix the previous: "securelevel" in kernel only
1998-11-15 17:36:19 +00:00
da1c106b85
In 'highly secure' mode (securelevel >= 2), the filter lists may not be tampered with. It might be desirable to allow enabling of preset filter lists, but it seems too good a candidate for a denial-of-service attack, so we don't.
1998-11-14 07:42:37 +00:00
cc41dfe747
simplify test in in_pcbbind() for setting wild=1; no need to check if
...
((so->so_proto->pr_flags & PR_CONNREQUIRED) == 0 ||
(so->so_options & SO_ACCEPTCONN) == 0)
since the latter is always true, so the former test in unnecessary.
from `TCP/IP Illustrated, Volume 2', W. Richard Stevens, p 730.
1998-11-13 10:50:10 +00:00
0e3a0a7f80
Once a fragmented IP packet has been reassembled, recompute the packet
...
length before passing it up the stack. From FreeBSD.
1998-11-13 03:24:22 +00:00
ede30e2813
Fix a buglet when looking up an interface for multicast:
...
Zero out the routing structure before calling the route lookup code
in order to correctly match addresses.
1998-10-26 17:31:01 +00:00
3ad026ac87
vax -> __vax__ (and mips to __mips__ in ultrix_misc.c)
1998-10-20 01:46:27 +00:00
cd7e3136ad
Use ETHERTYPE_ATALK instead of ETHERTYPE_AT. The former seems more common.
...
Our other constants also use "ATALK".
Added many new ETHERTYPE constants to sys/net/ethertypes.h, including the
ones from libpcap and tcpdump "ethertype.h" files.
1998-10-13 02:34:31 +00:00
14f5ac9081
Use the pool allocator for ipflow entries.
1998-10-08 01:41:45 +00:00
974aa74abd
Use the pool allocator for ipqent structures.
1998-10-08 01:19:25 +00:00
588ccb2d75
Fix some typos in comments, and clean up some whitespace.
1998-10-07 23:33:02 +00:00
6cfb33b4e4
Use the pool allocator for the tcpcb's TCP/IP header template.
1998-10-07 23:20:03 +00:00
bf4e491879
Fix boolean dyslexic test. Duh!
1998-10-06 00:41:13 +00:00
8e8f38e0f2
Add a sysctl for newreno (default to off).
1998-10-06 00:20:44 +00:00
a1ea50ee45
* in_pcblookup_port(): deprecate INPLOOKUP_WILDCARD and flags in favour
...
of a lookup_wildcard arg; simplifies the logic a bit.
* when assigning ephemeral ports in in_pcbbind(), always call
in_pcblookup_port() with lookup_wildcard=1, so that ephemeral port
allocation on sockets with SO_REUSEADDR set won't potentially bind to a
port in use by something else (principle of least surprise).
1998-10-05 14:33:14 +00:00
25054b5cf7
Adapt the NEWRENO changes from the UCSB diffs of BSDI 3.0's TCP
...
to NetBSD. Ignore the SACK & FACK stuff for now.
1998-10-04 21:33:52 +00:00
c68106edad
Use #error instead of causing a parse error.
1998-10-02 21:21:04 +00:00
5ddf423985
print reason for arplookup() failure (ala FreeBSD)
1998-10-01 11:04:24 +00:00
c4730d65cf
Switch order of TNF and UCB copyrights so UCB copyright is first; this seems more appropriate since UCB wrote the original code, after all.
1998-09-30 21:52:24 +00:00
eaccb9cd8d
Start supporting IPPROTO_MOBILE (55) encapsulation. This is yet
...
another tunneling protocol used by the Mobile-IP people. See RFC 2004
for this.
1998-09-30 05:59:27 +00:00
e74ca32804
SIOCGIFALIAS should not be restricted to the superuser.
1998-09-28 12:32:43 +00:00
4a000a54e6
Fix a typo (not mine) in a comment.
1998-09-19 04:34:34 +00:00
04ef3bf88d
If we're in LISTEN state and all of RST, SYN and ACK are clear, send a RST.
1998-09-19 04:32:51 +00:00
31347e4671
Always send a 0 window with a RST. Suggested by Darren Reed.
1998-09-19 04:02:52 +00:00
cf70cc28c7
Typo. :(
1998-09-14 21:15:56 +00:00
517139017e
Some additions.
...
And IDPR-CMTP is 38 not 39 according to IANA.
1998-09-14 21:09:51 +00:00
366b9c4515
Add a gre tunnel pseudo network device. Gre = generic route encapsulation.
...
This device shows up like any other network interface and can be used to
tunnel L3 protocols as e.g. IP over IP.
1998-09-13 20:27:47 +00:00
66dd35d72c
Fix copyright spacing and 'Van' -> 'van' for consistency.
1998-09-13 15:45:40 +00:00
235fc6a6a9
egcs {brace} warning fix
1998-09-10 19:53:28 +00:00
b95116821c
Create tcp.keepidle, tcp.keepintvl, tcp.keepcnt, tcp.slowhz sysctls.
1998-09-10 10:46:03 +00:00
9fd57e8917
Make a diagnostic printf more sensible, PR #5951 , Heiko W. Rupp.
1998-09-09 04:57:18 +00:00
4dbfe05f1f
Use an algorithm similar to that in tcp_notify() to determine if
...
syn_cache_unreach() should remove the entry, or just continue on.
Algorithm is to only remove the entry if we've had more than one unreach
error and have retransmitted 3 or more times. This prevents the following
scenario, as noted in PR #5909 (PR from Ty Sarna, scenario from
Charles Hannum):
* Host A sends a SYN.
* Host A retransmits the SYN.
* Host B gets the first SYN and sends a SYN-ACK.
* Host B gets the second SYN and sends a SYN-ACK.
* One of the SYN-ACK bounces with an
ICMP unreachable, causing the `SYN cache' entry to be
removed with no notification.
* Host A receives the other SYN-ACK, sends an ACK, and goes to
ESTABLISHED state.
Should fix PR #5909 .
1998-09-09 01:32:27 +00:00
0f024deb52
Add SIOCGIFALIAS
1998-09-06 17:52:01 +00:00
bb4f7768e4
Protect _XOPEN_SOURCE against sysctl MIB identifiers.
1998-09-05 19:03:25 +00:00
e2cb6dad8d
Make the randomized part of the ISS 24 bits.
1998-09-04 22:34:51 +00:00
thorpej