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 It was way out of date.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
...
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
2f501074f8
Fix a couple of bogons related to tcp_new_iss():
...
* Don't add tcp_iss_seq when creating a new ISS from TIME-WAIT state.
* Do the clock increment even when using the rnd device.
1998-09-04 22:29:54 +00:00
e3e7e1673f
Fix the NEXT_IA_WITH_SAME_ADDR macro introduced in 1.27: it was finding
...
the first in_ifaddr structure with a different internet address! Reverse
the sense of the test. Spotted by and fix from Eric Haszlakiewicz.
1998-08-14 06:57:54 +00:00
4a75265273
defopt PFIL_HOOKS.
1998-08-09 08:58:18 +00:00
833061914a
Use the pool allocator for tcpcbs.
1998-08-02 00:36:19 +00:00
d319e4b419
Use the pool allocator for syn_cache entries.
1998-08-02 00:35:51 +00:00
47e9dcf841
Use the pool allocator for inpcbs.
1998-08-02 00:35:31 +00:00
31d0752b99
change IN_IFADDR_HASH_SIZE to 509, which actually uses no more space than 293 due to rounding up to nearest power of two in hashinit.
1998-07-29 05:18:54 +00:00
84840da908
in_pcballoc(): we can't afford to wait for memory.
1998-07-23 08:24:33 +00:00
cca4e566a9
Implement a better fix for the `gratuitous FIN' problem, as
...
mentioned on tcp-impl but with a bit more commentary.
1998-07-21 10:46:00 +00:00
3a9ed00799
Document that we are more conservative after doing MTU discovery than the
...
suggestion in draft-floyd-incr-init-win-03. Rather than scaling cwnd back
by the ratio of new segment size to old segment size, we perform a slow start
using the Initial Window, computed with the new segment size.
1998-07-17 23:09:58 +00:00
0f909866c0
Clarify that we're using the Loss Window when we receive a source quench.
1998-07-17 23:02:38 +00:00
fa20f24cd9
Add a comment wrt. a current issue w/ CWM.
1998-07-17 23:00:02 +00:00
a3f4316cba
Clarify that we are using the Loss Window if a retransmission occurred
...
during the three-way handshake.
1998-07-17 22:58:56 +00:00
830879a809
Comment where the Restart Window is computed, and in the non-CWM case,
...
make sure it never _increases_ cwnd.
1998-07-17 22:52:01 +00:00
1c4ff0a086
Comment where we use the Loss Window.
1998-07-17 22:18:49 +00:00
69b1b4758d
Fix PR5559: if fast-forwarding, DF set, and packet too large, send ICMP error..
1998-07-17 00:35:23 +00:00
534520d815
Fix PR5508: ipfil cut-through forwarding causes panic
1998-07-17 00:28:00 +00:00
deac3540de
Put original hash function back. It wastes a little bit of space, but is much more even -- think of the case of a web service provider, some of whose customers end up getting 'inferior service' because they're on addresses that happen to be out at the end of a hash chain. With webservers with thousands of addresses, this is a real issue. If the wasted space is a big deal, we could pick a prime number that's slightly _less_ than a power of two...
1998-07-16 06:45:09 +00:00
389da54091
Garbage collect `imp' and `hy'. We don't have the rest of the code, and
...
it's not like anyone is ever going to be using either of them.
1998-07-15 17:39:20 +00:00
97ab1bd53b
Resolve conflicts from the import.
1998-07-12 15:23:59 +00:00
3a64270ca6
Back out the change from TCP/IP vol 2, in revision 1.7, which removed TH_FIN
...
from the output flags for CLOSING state. There is no harm in retransmitting
the FIN, and this change has unexpected side effects that break simultaneous
close behaviour.
1998-07-09 05:49:56 +00:00
065cac9798
Delete bogus (void) cast of m_freem (which is already a void function..)
1998-07-07 00:04:59 +00:00
b37021c1a1
defopt NATM.
1998-07-05 22:48:05 +00:00
9bf2ba0928
Garbage-collect ``needs-flag'' from attributes ether, fddi, arc:
...
NETHER, NFDDI, NARC are not used anywhere. Remove #include "ether.h",
which had no effect.
Removes clash with "options NATM" for native-ATM network protocol stack.
1998-07-05 22:29:51 +00:00
011f2bda08
defopt NS, NSIP.
1998-07-05 06:49:00 +00:00
5c0c5dd0b4
defopt ISO TPIP.
1998-07-05 04:37:35 +00:00
f2a2327e0a
defopt EON.
1998-07-05 01:06:49 +00:00
3751946b97
defopt INET, NETATALK.
1998-07-05 00:51:04 +00:00
466e784ee1
defopt DDB.
1998-07-04 22:18:13 +00:00
8cfe8959a6
Fix TCPS_HAVERCVDFIN() to actually catch all TCP states in which a FIN
...
has been received (CLOSE_WAIT, CLOSING, LAST_ACK, and TIME_WAIT).
From David Borman <dab@bsdi.com>.
1998-07-03 05:39:56 +00:00
0ca02c68a7
Thinko in last fix: we have to actually check each address for a copy on
...
our ifp, else we might fail for some strange configurations.
1998-07-02 14:00:39 +00:00
d8b8a41918
The rewrite of if_arp.c to work with the hashed interface address lists
...
(1.44) missed a test for the right interface, making some machines answer
to some bogus arp requests (like for WHO-HAS 127.0.0.1).
The quick patch in 1.46-1.47 does not work for so-called "unnumbered"
interfaces, that is, (point-to-point) interfaces that share their local
address with another (e.g., the Ethernet) interface.
We add a macro to in_var.h, to step (in the current implementation) through
the hash chain and fine more entries with the same address, and use that
in if_arp.c to find one which belongs to our interface.
1998-07-02 11:39:56 +00:00
mycroft