Commit Graph

843 Commits

Author SHA1 Message Date
itojun bc5a6e2482 pull latest kame pcbnotify code. synchronizes ICMPv6 path mtu discovery
behavior with other protocols (i.e. validation, use of hiwat/lowat).
2001-02-11 06:49:49 +00:00
itojun 52e23efa5f make sure we call tcp_output() only if we have template. 2001-02-11 06:39:35 +00:00
itojun 22b473e0f6 during ip6/icmp6 inbound packet processing, do not call log() nor printf() in
normal operation (/var can get filled up by flodding bogus packets).
sysctl net.inet6.icmp6.nd6_debug will turn on diagnostic messages.
(#define ND6_DEBUG will turn it on by default)

improve stats in ND6 code.

lots of synchronziation with kame (including comments and cometic ones).
2001-02-07 08:59:47 +00:00
chs c92d60cfce expose the definitions of MIN() and MAX() in sys/param.h to the kernel
and use those in favor of a dozen copies scattered around the source tree.
2001-02-05 11:16:31 +00:00
chs 09cb38f22b expose the definitions of MIN() and MAX() in sys/param.h to the kernel
and use those in favor of a dozen copies scattered around the source tree.
2001-02-05 10:42:40 +00:00
is 29d5f56206 Make diagnostic actually useful - needed to debug other ARP PRs.
Suggested by Geoff C. Wing in PR 10815.
2001-01-26 11:40:32 +00:00
itojun 617b3fab7e - record IPsec packet history into m_aux structure.
- let ipfilter look at wire-format packet only (not the decapsulated ones),
  so that VPN setting can work with NAT/ipfilter settings.
sync with kame.

TODO: use header history for stricter inbound validation
2001-01-24 09:04:15 +00:00
itojun 696bcad865 put attribute(packed) for ip6 option headers. they will appear at
strange alignment positions.  sync with kame
2001-01-23 07:21:07 +00:00
itojun 5a4703fbfe revert revision 1.15 (on ingress, DF bit copied from inner to outer).
since we do not have feedback mechanism from path MTU to tunnel MTU
(not sure if we should), and inner packet source will not get informed of
outer PMTUD (we shouldn't do this), 1.15 behavior can lead us to
blackhole behavior.

configurable behavior (as suggested in RFC2401 6.1) would be nice to have,
however, reusing net.inet.ipsec.dfbit would be hairy.
2001-01-22 07:57:34 +00:00
itojun a836499e32 make it possible to turn off ingress filter on gif/stf tunnel egress,
by using IFF_LINK2.  (part of) PR 11163 from Ken Raeburn.
2001-01-22 07:51:01 +00:00
itojun 93deb6a97f fix RR result bit in little endian systems. sync with kame 2001-01-22 02:28:02 +00:00
itojun 69622e75ab sync with latest kame.
- make icmp6.h spec conformant to 2292bis-02, regarding to router reumbering
  flag bit.
- latest rtadvd.
2001-01-21 15:39:32 +00:00
kleink 4c96c6b51f Add IPPROTO_VRRP. 2001-01-19 09:01:48 +00:00
jdolecek 34c8ae80da constify 2001-01-18 20:28:15 +00:00
itojun df9784d749 pull post-4.4BSD change to sys/net/route.c from BSD/OS 4.2 (UCB copyrighted).
have sys/net/route.c:rtrequest1(), which takes rt_addrinfo * as the argument.
pass rt_addrinfo all the way down to rtrequest, and ifa->ifa_rtrequest.
3rd arg of ifa->ifa_rtrequest is now rt_addrinfo * instead of sockaddr *
(almost noone is using it anyways).

benefit: the follwoing command now works.  previously we need two route(8)
invocations, "add" then "change".
# route add -inet6 default ::1 -ifp gif0

remove unsafe typecast in rtrequest(), from rtentry * to sockaddr *.  it was
introduced by 4.3BSD-reno and never corrected.

XXX is eon_rtrequest() change correct regarding to 3rd arg?
eon_rtrequest() and rtrequest() were incorrect since 4.3BSD-reno,
so i do not have correct answer in the source code.
someone with more clue about netiso-over-ip, please help.
2001-01-17 04:05:41 +00:00
thorpej fc5dafc79b Fix a rather annoying problem where the sockaddr_dl which holds
the link level name for the interface (ifp->if_sadl) is allocated
before ifp->if_addrlen is initialized, which could lead to allocating
too little space for the link level address.

Do this by splitting allocation of the link level name out of
if_attach() and into if_alloc_sadl(), which is normally called
by functions like ether_ifattach().  Network interfaces which
don't have a link-specific attach routine must call if_alloc_sadl()
themselves (example: gif).

Link level names are freed by if_free_sadl(), which can be called
from e.g. ether_ifdetach().  Drivers never need call if_free_sadl()
themselves as if_detach() will do it if it is not already done.

While here, add the ability to pass an AF_LINK address to
SIOCSIFADDR in ether_ioctl() (this is what caused me to notice
the problem that the above fixes).
2001-01-17 00:30:49 +00:00
itojun 42bede79da allow IP_MULTICAST_IF and IP_ADD/DROP_MEMBERSHIP to specify interface
by interface index.  if the interface address specified is in 0.0.0.0/8
it will be considered as interface index in network byteorder.

getsockopt(IP_MULTICAST_IF) preserves old behavior if
setsockopt(IP_MULTICAST_IF) was done with interface address, and
returns interface index if setsockopt(IP_MULTICAST_IF) was done with
interface index (again using the form in 0.0.0.0/8).

Suggested by Dave Thaler, based on RIPv2 MIB spec (RFC1724 section 3.3).

http://mail-index.netbsd.org/tech-net/2001/01/13/0003.html
2001-01-13 07:19:33 +00:00
itojun 4a14fb4fd8 on getsockopt(IP_IPSEC_POLICY), make sure to initialize len 2001-01-13 06:01:18 +00:00
thorpej 054b845cec Fix a small typo that would cause IP Filter to not hook in to
pfil_hooks properly on kernels that included IPv6 support.
2000-12-28 21:42:49 +00:00
thorpej ad5b855ef0 Back out the sledgehammer damage applied by wiz while I was out for
the holiday.
2000-12-28 21:40:59 +00:00
wiz 32e20d8993 Back out previous change. It causes NAT to fail, and was CLEARLY
NOT TESTED before it was committed.
2000-12-25 02:00:46 +00:00
thorpej d0357bdb4f Slight adjustment to how pfil_head's are registered. Instead of a
"key" and a "dlt", use a "type" (PFIL_TYPE_{AF,IFNET} for now) and
a val/ptr appropriate for that type.  This allows for more future
flexibility with the pfil_hook mechanism.
2000-12-22 20:01:17 +00:00
itojun b2aef8afe2 fix call to in6_pcbnotify. s/EMSGSIZE/PRC_MSGSIZE/. 2000-12-21 00:45:17 +00:00
thorpej ca9af6e52e Pull in BPF includes. 2000-12-18 20:58:13 +00:00
thorpej ed7695a765 Fill in if_dlt. 2000-12-18 19:44:33 +00:00
thorpej d9a9544a2f Add ALTQ glue. XXX Temporary until ALTQ is changed to use a pfil hook. 2000-12-14 17:36:44 +00:00
thorpej c5293456da Adapt to bpfattach() changes, and further centralize the bpfattach()
and bpfdetach() calls into link-type subroutines where possible.
2000-12-12 18:00:22 +00:00
itojun 25296369e5 make sure t_family has the correct protocol family, after connect(2)
and/or bind(2).  sync with kame
2000-12-11 00:07:48 +00:00
itojun 9302f377a6 remove NRL code leftover. sync with kame 2000-12-10 23:39:36 +00:00
itojun 5eae50d991 update icmp6 too big validation. the change is necessary since pmtud is
mandatory for IPv6 (so we can't just validate by using connected pcb - we need
to allow traffic from unconnected pcb to do pmtud).
- if the traffic is validated by xx_ctlinput, allow up to "hiwat" pmtud
  route entries.
- if the traffic was not validated by xx_ctlinput, allow up to "lowat" pmtud
  route entries (there's upper limit, so bad guys cannot blow up our routing
  table).
sync with kame

XXX need to think again about default hiwat/lowat value.
XXX victim selection to help starvation case
2000-12-09 01:29:45 +00:00
itojun 7fee705236 more on previous (udp4 multicast fix) 2000-12-04 11:24:20 +00:00
itojun c2ca545d60 fix multicast inbound packet processing.
NetBSD PR 11629 From: salvet@ics.muni.cz
2000-12-04 11:23:04 +00:00
itojun f9ed4a5d70 IFA_STATS stability (not complete); don't touch ip if it is NULL. 2000-11-24 03:43:20 +00:00
thorpej e37508421d Due to a quirk (err, bug?) in IP Filter (mbuf freed without setting *mp
to NULL), the NULL check is insufficient.  Also make sure fr_check()
returned 0.
2000-11-12 19:50:47 +00:00
thorpej cbf6f69cb2 Oops, the mbuf may have been freed -- do a NULL check in the wrapper. 2000-11-12 19:29:31 +00:00
thorpej 8517807044 Actually, our local ip_off variable isn't needed. 2000-11-11 00:55:51 +00:00
thorpej 65fd25ea82 Restructure the PFIL_HOOKS mechanism a bit:
- All packets are passed to PFIL_HOOKS as they come off the wire, i.e.
  fields in protocol headers in network order, etc.
- Allow for multiple hooks to be registered, using a "key" and a "dlt".
  The "dlt" is a BPF data link type, indicating what type of header is
  present.
- INET and INET6 register with key == AF_INET or AF_INET6, and
  dlt == DLT_RAW.
- PFIL_HOOKS now take an argument for the filter hook, and mbuf **,
  an ifnet *, and a direction (PFIL_IN or PFIL_OUT), thus making them
  less IP (really, IP Filter) centric.

Maintain compatibility with IP Filter by adding wrapper functions for
IP Filter.
2000-11-11 00:52:36 +00:00
ad 642267bcc7 Update for hashinit() change. 2000-11-08 14:28:12 +00:00
itojun ef8a34f5c3 fix IPv4 TTL selection with AF_INET6 API. sync with kame. From: jdc 2000-11-06 00:50:12 +00:00
onoe e83458422f First Prototype implementation of network interface part for IEEE1394 (if_fw).
Current status:
	Only OHCI chip is supported (fwohci).
	ping (IPv4) works with Sony's implementation (SmartConnect) on Win98.
	sometimes works but not stable.
Not implemented yet:
	IRM (Isochronous Resource Manager) functionality.
	Link layer fragmentation.
	Topology map.
More to do:
	clean ups
	MCAP
	charactor device part
	dhcp

There is no entry in GENERIC config file yet.
Follow sys/dev/ieee1394/IMPLEMENTATION to enable if_fw.
2000-11-05 17:17:12 +00:00
itojun be2983be9d cleanup tcp_drop 2000-10-29 06:33:59 +00:00
itojun 7813d4bf6e process IPv4 tcp RST packet right. reported by thorpej. 2000-10-29 06:30:51 +00:00
itojun 80db86454a fix IFA_STATS.
- use hashed in_ifaddr lookup.
- correct endianness.
2000-10-23 03:42:18 +00:00
mjl 986b950535 Mark packets from gre as coming from appropriate gre interface, not
transport interface.
2000-10-20 20:43:26 +00:00
itojun 9183e2dc4e remove #ifdef TCP6. it is not likely for us to bring in sys/netinet6/tcp6*.c
(separate TCP/IPv6 stack) into netbsd-current.
2000-10-19 20:22:59 +00:00
itojun 9288750911 memcpy -> bcopy, for sync with kame tree 2000-10-19 00:40:44 +00:00
itojun 23a03329ef verify ICMPv6 too big messages based on TCP pcbs, and/or IPsec SA.
TODO: udp6, and sendto consideration.  as pmtud is mandatory for IPv6,
it is rather important for us to support those cases.
TODO: more testing
TODO: kame sync
2000-10-18 21:14:12 +00:00
itojun d7ca32a335 s/mtudisc_callback/icmp_&/ so that we don't feel conflict between IPv4 and
IPv6 counterpart. (or icmp4_&?)
2000-10-18 20:34:00 +00:00
itojun 9e8a83c2a4 count successful path MTU changes. good for debugging.
(there could be some discussion on when to increase the counter...)
2000-10-18 19:20:02 +00:00
thorpej ea9b5a9106 Restructure the Path MTU Discovery code somewhat to avoid
entering rtentry's for hosts we're not actually communicating
with.

Do this by invoking the ctlinput for the protocol, which is
responsible for validating the ICMP message:
	* TCP -- Lookup the connection based on the address/port
	  pairs in the ICMP message.
	* AH/ESP -- Lookup the SA based on the SPI in the ICMP message.

If validation succeeds, ctlinput is responsible for calling
icmp_mtudisc().  icmp_mtudisc() then invokes callbacks registered
by protocols (such as TCP) which want to take some sort of special
action when a path's MTU changes.  For TCP, this is where we now
refresh cached routes and re-enter slow-start.

As a side-effect, this fixes the problem where TCP would not be
notified when a path's MTU changed if AH/ESP were being used.

XXX Note, this is only a fix for the IPv4 case.  For the IPv6
XXX case, we need to wait for the KAME folks.

Reviewed by sommerfeld@netbsd.org and itojun@netbsd.org.
2000-10-18 17:09:14 +00:00