Commit Graph

111 Commits

Author SHA1 Message Date
jdolecek a59a99b6dc Slighly improve previous - only include <netinet/ip_mroute.h> if MROUTING
is defined.
2000-03-31 14:27:17 +00:00
jdolecek c2acbd102b include <netinet/ip_mroute.h> for ip_mforward() - needed after
last duplicate prototype sweep (prototype for ip_mforward() used to be in <netinet/ip_var.h>)
2000-03-31 08:34:20 +00:00
augustss 8529438fe6 Remove register declarations. 2000-03-30 12:51:13 +00:00
simonb c2693b78a0 Delete uninitialised declaration of ip_defttl - there's an initialised
decl earlier in this file.
2000-03-30 02:35:24 +00:00
thorpej 0fcf68825f Back out previous, and adjust a comment. 2000-03-10 22:39:03 +00:00
thorpej d315d42657 Back out part of 1.104 which isn't actually needed. 2000-03-07 05:39:57 +00:00
itojun 38441b4ae3 remove unnecessary ttl initialization which I mistakingly bringed in
during KAME merge (this is part of WIDE's expeirmental reass code...)
NetBSD PR: 9412
From: Wolfgang Rupprecht <wolfgang@wsrcc.com>
Fix from: ho@crt.se
itojun was notified from: theo
2000-03-03 13:07:42 +00:00
thorpej 754bba7b6c Avoid a bug in GCC which manifests itself when processing unaligned
IP options.  Problem pointed out by Matt Hargett and Erik Fair, analyzed
by me.
2000-03-02 06:07:36 +00:00
itojun 04ac848d6f introduce m->m_pkthdr.aux to hold random data which needs to be passed
between protocol handlers.

ipsec socket pointers, ipsec decryption/auth information, tunnel
decapsulation information are in my mind - there can be several other usage.
at this moment, we use this for ipsec socket pointer passing.  this will
avoid reuse of m->m_pkthdr.rcvif in ipsec code.

due to the change, MHLEN will be decreased by sizeof(void *) - for example,
for i386, MHLEN was 100 bytes, but is now 96 bytes.
we may want to increase MSIZE from 128 to 256 for some of our architectures.

take caution if you use it for keeping some data item for long period
of time - use extra caution on M_PREPEND() or m_adj(), as they may result
in loss of m->m_pkthdr.aux pointer (and mbuf leak).

this will bump kernel version.

(as discussed in tech-net, tested in kame tree)
2000-03-01 12:49:27 +00:00
darrenr 4b3916780b pass "struct pfil_head *" to pfil_add_hook and pfil_remove hook rather
than "struct protosw *".
2000-02-20 00:56:33 +00:00
darrenr fd7edad6c3 Change the use of pfil hooks. There is no longer a single list of all
pfil information, instead, struct protosw now contains a structure
which caontains list heads, etc.  The per-protosw pfil struct is passed
to pfil_hook_get(), along with an in/out flag to get the head of the
relevant filter list.  This has been done for only IPv4 and IPv6, at
present, with these patches only enabling filtering for IPPROTO_IP and
IPPROTO_IPV6, although it is possible to have tcp/udp, etc, dedicated
filters now also.  The ipfilter code has been updated to only filter
IPv4 packets - next major release of ipfilter is required for ipv6.
2000-02-17 10:59:32 +00:00
itojun 729f693364 - if ip_dst matches address on !IFF_UP interface, and
- there's no match against addresses on IFF_UP interface,
send icmp unreach if I'm router.  drop it if I'm host.

Revised version of PR: 9387 from nrt@iij.ad.jp.  Discussed with thorpej+nrt.
2000-02-16 12:40:40 +00:00
thorpej fd4ed9b425 Typo (Thanks, Havard :-) 2000-02-12 18:00:00 +00:00
thorpej 46f7b67929 Small cosmetic change, and note a place where a statistic should be
gathered.
2000-02-12 17:45:44 +00:00
itojun 46dfa55555 fix in-kernel packet forwarding loop (till TTL becomes 0) when:
- a packet is delivered to an address X,
- and the address X is configured on my !IFF_UP interface
- and ipforwarding=1

NetBSD PR: 9387
From: nrt@iij.ad.jp
2000-02-11 05:57:58 +00:00
thorpej 637a2eee6e Use ifatoia() and sintosa() consistently, rather than using home-grown
casting macros intermixed.
2000-02-01 00:07:09 +00:00
itojun 1a2a1e2b1f bring in latest KAME ipsec tree.
- interop issues in ipcomp is fixed
- padding type (after ESP) is configurable
- key database memory management (need more fixes)
- policy specification is revisited

XXX m->m_pkthdr.rcvif is still overloaded - hope to fix it soon
2000-01-31 14:18:52 +00:00
itojun 90fe937b44 disable ipflow (IPv4 fast fowarding) when IPsec is configured into the kernel. 1999-10-26 09:53:17 +00:00
sommerfeld c2accd9f9c In ip_forward():
Avoid forwarding ip unicast packets which were contained inside
link-level multicast packets; having M_MCAST still set in the packet
header flags will mean that the packet will get multicast to a bogus
group instead of unicast to the next hop.

Malformed packets like this have occasionally been spotted "in the
wild" on a mediaone cable modem segment which also had multiple netbsd
machines running as router/NAT boxes.

Without this, any subnet with multiple netbsd routers receiving all
multicasts will generate a packet storm on receipt of such a
multicast.  Note that we already do the same check here for link-level
broadcasts; ip6_forward already does this as well.

Note that multicast forwarding does not go through ip_forward().

Adding some code to if_ethersubr to sanity check link-level
vs. ip-level multicast addresses might also be worthwhile.
1999-10-17 16:00:00 +00:00
itojun 42c5caafe7 do not include unnecessary include files. 1999-07-23 15:21:17 +00:00
thorpej f9a7668b3f defopt IPSEC and IPSEC_ESP (both into opt_ipsec.h). 1999-07-09 22:57:15 +00:00
itojun dcc13cdd33 sync with KAME/NetBSD 1.4, SNAP kit 19990705.
key changes are:
- icmp6 redirect fix (dst check)
- revised ip6 multicast check for loopback i/f
- several RCS ID cleanups
1999-07-06 12:23:19 +00:00
itojun 118d2b1d4f IPv6 kernel code, based on KAME/NetBSD 1.4, SNAP kit 19990628.
(Sorry for a big commit, I can't separate this into several pieces...)
Pls check sys/netinet6/TODO and sys/netinet6/IMPLEMENTATION for details.

- sys/kern: do not assume single mbuf, accept chained mbuf on passing
  data from userland to kernel (or other way round).
- "midway" ATM card: ATM PVC pseudo device support, like those done in ALTQ
  package (ftp://ftp.csl.sony.co.jp/pub/kjc/).
- sys/netinet/tcp*: IPv4/v6 dual stack tcp support.
- sys/netinet/{ip6,icmp6}.h, sys/net/pfkeyv2.h: IETF document assumes those
  file to be there so we patch it up.
- sys/netinet: IPsec additions are here and there.
- sys/netinet6/*: most of IPv6 code sits here.
- sys/netkey: IPsec key management code
- dev/pci/pcidevs: regen

In my understanding no code here is subject to export control so it
should be safe.
1999-07-01 08:12:45 +00:00
sommerfeld b7c70d2b2f If the new global variable hostzerobroadcast is zero, no longer assume
address zero of each net/subnet is a broadcast address.
(The default value is nonzero, which preserves the current behavior).

This can be set using sysctl; the boot-time default can also be
configured using the HOSTZEROBROADCAST kernel config option.

While we're here, defopt HOSTZEROBROADCAST and SUBNETSARELOCAL
1999-06-26 06:16:47 +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
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
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
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
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
mycroft 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
thorpej 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
thorpej 12632ebf71 Reverse the copyright-notice-swap. It went against existing practice. 1998-12-19 02:46:12 +00:00
thorpej 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
thorpej 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
thorpej 14f5ac9081 Use the pool allocator for ipflow entries. 1998-10-08 01:41:45 +00:00
thorpej 974aa74abd Use the pool allocator for ipqent structures. 1998-10-08 01:19:25 +00:00
tls 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
thorpej 9fd57e8917 Make a diagnostic printf more sensible, PR #5951, Heiko W. Rupp. 1998-09-09 04:57:18 +00:00
mrg 4a75265273 defopt PFIL_HOOKS. 1998-08-09 08:58:18 +00:00
sommerfe 534520d815 Fix PR5508: ipfil cut-through forwarding causes panic 1998-07-17 00:28:00 +00:00
thorpej 08b5a4ecb8 Protect the ipflow_reap() call with splsoftnet. 1998-06-01 00:39:37 +00:00
thorpej f555f6d93f Fix OBOB in IP timestamp option processing, as noted in FreeBSD PR 6738,
from Jennifer Dawn Meyers <jdm@enteract.com>.
1998-05-24 20:14:53 +00:00
matt 36eac04cc0 Default IP flow to being enabled. Add a sysctl to control the maximum
number of flows (net.inet.ip.maxflows).  If set to 0, will disable fast
path forwarding.
1998-05-04 19:24:53 +00:00
thorpej 4452bc9a21 Allow packet filters to prevent a packet from creating a fast-forwarding
flow, by setting the "can fast forward" flag in the packet header, and
giving a chance for filters to clear the flag.  If the flag is still
set after the filters have given it a chance, the packet will be used
to create a fast-forward flow entry.
1998-05-01 03:23:24 +00:00
matt d4d709f7d0 Add support for "fast" forwarding. Add hooks in if_ethersubr.c and
if_fddisubr.c to fastpath IP forwarding.  If ip_forward successfully
forwards a packet, it will create a cache (ipflow) entry.  ether_input
and fddi_input will first call ipflow_fastforward with the received
packet and if the packet passes enough tests, it will be forwarded (the
ttl is decremented and the cksum is adjusted incrementally).
1998-04-29 21:37:52 +00:00
matt 37d70e3b46 defopt GATEWAY 1998-04-29 20:45:30 +00:00