Commit Graph

90 Commits

Author SHA1 Message Date
lukem 34d65a3414 add RCSIDs 2001-11-12 23:49:33 +00:00
itojun dfb1429789 unifdef OLDIP6OUTPUT 2001-10-17 08:23:05 +00:00
thorpej a20e50f72a Duh, braino in last -- only kick the interface if we actually set
the MTU.
2001-07-25 03:18:46 +00:00
thorpej c7edeb2b4f If we change the MTU, kick the interface; it may have to reprogram
registers for the new MTU.
2001-07-25 03:05:33 +00:00
thorpej ab5a996fc5 When setting an address on an interface, for address families which
do not require changing the link-level address, only (*if_init)()
if the interface is not already RUNNING.
2001-06-29 18:12:09 +00:00
itojun 4d51fe368b change the meaning of ifnet.if_lastchange to meet RFC1573 ifLastChange.
follows BSD/OS practice and ucd-snmp code (FreeBSD does it for specific
interfaces only).

was: if_lastchange get updated on every packet transmission/receipt.
now: if_lastchange get updated when IFF_UP is changed.
2001-06-14 05:44:23 +00:00
thorpej 4f7cad1c02 On a non-simplex interface, check incoming multicast (this catches
the broadcast case as well) to see if they came from us, and drop
them if they did.

This fixed IPv6 DAD on non-simplex interfaces, e.g. the Seeq 8003
found on my SGI Indy.
2001-06-12 15:03:26 +00:00
thorpej 7b1b8dd02a Consider the configured MTU of the interface when determining
if a packet is too large.
2001-06-03 03:24:23 +00:00
thorpej 597194532e Add a capability bit that indicates support for Gigabit Ethernet
jumbo frames, and use it in SIOCSIFMTU.
2001-06-03 03:07:39 +00:00
martin b5b75a7d19 Add an in-kernel PPPoE (ppp over ethernet, RFC 2516) implementation,
based on the existing net/if_spppsubr.c stuff.

While there are completely userland (bpf based) implementations available,
those have a vastly larger per packet overhead thus causing major CPU
overhead and higher latency. On an i386 base router, running a 486DX at 50MHz
my line (768kBit/s downstream) was limited to something (varying) between 10
and 20 kByte/s effective download rate. With this implementation I get full
bandwidth (~85kByte/s).

This is client side only. Arguably the right way to add full PPPoE support
(including server side) would be a variation of the ppp line discipline and
appropriate modifications to pppd. I promise every help I can give to anyone
doing that - but I needed this realy fast. Besids, on low memory NAT boxes
with typically a single PPPoE connection, this implementation is more
lightweight than a pppd based one, which nicely fits my needs.
2001-04-29 09:50:36 +00:00
marcus 9bcf84f72a STDC cleanup: label not allowed just before end of block. 2001-04-27 00:14:02 +00:00
thorpej bf2dcec4f5 Remove the use of splimp() from the NetBSD kernel. splnet()
and only splnet() is allowed for the protection of data structures
used by network devices.
2001-04-13 23:29:55 +00:00
thorpej f62e94272e Add hooks for bridging. 2001-04-11 03:47:24 +00:00
thorpej 4702254396 Process pfil hooks for Ethernet input and output. 2001-04-10 21:47:36 +00:00
thorpej c28f672aee Add altq_etherclassify(), a slight hack modified from the kame/freebsd4
tree, which allows a packet with Ethernet headers already present to
run through the ALTQ packet classifier.  This is needed in order to
suport ALTQ on VLAN and bridge devices.
2001-04-07 18:01:48 +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
augustss 79431d7824 Simplify case statement a tiny bit. 2000-12-26 23:54:34 +00:00
thorpej ed7695a765 Fill in if_dlt. 2000-12-18 19:44:33 +00:00
thorpej 3dc1664f57 Add ALTQ glue. 2000-12-13 22:07:50 +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
bouyer 6e08061c2a Supports hardware 802.1q VLAN tagging, per discussion on tech-net. The tag is
stored in a m_aux mbuf defined by AF_LINK, ETHERTYPE_VLAN.
Thanks to Jason & Itojun for the feedback.
2000-11-17 19:21:53 +00:00
thorpej b84f740be0 Move bpfattach()/bpfdetach() calls into ether_ifattach()/ether_ifdetach(). 2000-11-15 01:02:11 +00:00
matt cf67b6ff59 When discarding oversized frame, say how long it was. 2000-10-15 19:49:55 +00:00
itojun d7a216bb96 suppress warning on nd6_storelladdr failure. the failure could happen
easily when we have routing table with too many entries.  sync with kame.
2000-10-15 15:39:11 +00:00
thorpej fabbb33a60 Implement ether_ioctl(), ioctl operations common to all Ethernet
interfaces.
2000-10-11 16:53:41 +00:00
enami d86752997f Free mbuf when dropping VLAN frame due to no configured vlan interface. 2000-10-04 07:01:52 +00:00
thorpej efbead5055 When an Ethernet interface detaches, unconfigure any VLANs associated
with it.
2000-10-03 23:50:52 +00:00
thorpej 96375e93ea Improve the VLAN support, in particular, handling of MTU:
- Add a macro to compute the max frame length based on Ethertype
  and presence of FCS, and use it to validate the packet size
  in ether_input().
- Add capabilites to struct ethercom, and allow hardware drivers
  to specify that they can handle the larger hardware MTU that
  VLANs require in order to strictly conform to 802.1Q.
- Make ether_ifdetach() clear out the link address and free all of
  the Ethernet multicast structures.

Also, rearrange the VLAN driver itself in preparation to supporting
other hardware types, including FDDI (which has 802.1Q VLAN capability).
2000-10-03 23:33:38 +00:00
thorpej 4a66a476e9 Make the previous code path simpler (and possible easier for the
compiler to optimize), based on fddi_input().
2000-10-01 23:43:44 +00:00
thorpej 7ca3fb9ef0 Move the check for "promisc + unicast + not for us" into ether_input(),
and change Ethernet drivers to always pass all received frames to
ether_input() (with a few exceptions, which are documented in the
code).
2000-10-01 23:32:39 +00:00
enami bf888fcd19 Factor out and give a name to the common functionality to translate
sockaddr which represents a multicast address into an Ethernet address
or range of Etherenet addresses.
2000-09-28 07:15:27 +00:00
thorpej 77efca7976 Glue VLANs into ether_input(). 2000-09-27 22:58:21 +00:00
matt 215470b24c Ansify before committing my next change. 2000-06-17 20:57:20 +00:00
mycroft fbb147f69b Check the multicast bit in the header mbuf while interrupts are still blocked.
Otherwise we can run off into space if the packet was sent immediately and the
mbuf freed.
Pointed out by Boris Popov (not on our lists).
2000-06-14 05:10:27 +00:00
thorpej 5e6bec6a7e - Fix a bug in the double-loop version of ether_crc32_le() -- we're not't
supposed to bubble carry through.
- Disable the double-loop version of ether_crc32_le() and add a
  table-driven version of ether_crc32_le() -- the table-driven
  version is faster.
2000-05-12 16:22:36 +00:00
itojun ecb5f2e56a revisit in6_ifattach().
- be persistent on initializing interfaces, even if there's manually-
  assigned linklocal, multicast/whatever initialization is necessary.
- do not cache mac addr in the kernel.  grab mac addr from existing cards
  (this is important when you swap ethernet cards back and forth)
now ppp6 works just fine!

call in6_ifattach() on ATM PVC interface to assign link-local, using
hardware MAC address as seed.

(the change is in sync with kame tree).
2000-04-12 10:36:38 +00:00
thorpej 57aae5ce02 On second thought, only set a default baudrate for "ethernet" if one
isn't set already.
2000-03-06 21:03:46 +00:00
thorpej b99cf790df - Initialize ifp->if_baudrate to a sensible value when the interface is
attached.
- Add ether_crc32_be() and ether_crc_le(), common functions for computing
  the Ethernet CRC on arbitrary length buffers.  Nothing uses them yet,
  and these should be double-checked and probably re-implemented as
  table-driven functions.
2000-03-06 20:54:41 +00:00
thorpej d844a3ac41 First-draft if_detach() implementation, originally from Bill Studnemund,
although this version has been changed somewhat:
- reference counting on ifaddrs isn't as complete as Bill's original
  work was.  This is hard to get right, and we should attack one
  protocol at a time.
- This doesn't do reference counting or dynamic allocation of ifnets yet.
- This version introduces a new PRU -- PRU_PURGEADDR, which is used to
  purge an ifaddr from a protocol.  The old method Bill used didn't work
  on all protocols, and it only worked on some because it was Very Lucky.

This mostly works ... i.e. works for my USB Ethernet, except for a dangling
ifaddr reference left by the IPv6 code; have not yet tracked this down.
2000-02-01 22:52:04 +00:00
itojun ea861f0183 sync IPv6 part with latest KAME tree. IPsec part is left unmodified
due to massive changes in KAME side.
- IPv6 output goes through nd6_output
- faith can capture IPv4 packets as well - you can run IPv4-to-IPv6 translator
  using heavily modified DNS servers
- per-interface statistics (required for IPv6 MIB)
- interface autoconfig is revisited
- udp input handling has a big change for mapped address support.
- introduce in4_cksum() for non-overwriting checksumming
- introduce m_pulldown()
- neighbor discovery cleanups/improvements
- netinet/in.h strictly conforms to RFC2553 (no extra defs visible to userland)
- IFA_STATS is fixed a bit (not tested)
- and more more more.

TODO:
- cleanup os-independency #ifdef
- avoid rcvif dual use (for IPsec) to help ifdetach

(sorry for jumbo commit, I can't separate this any more...)
1999-12-13 15:17:17 +00:00
matt 8a762f7db3 Fix appletalk over ethernet. 1999-10-12 04:53:45 +00:00
matt 72a3b3a08a Make NETATALK over FDDI. 1999-09-21 22:18:51 +00:00
is f5050d025a We only need the ether_ipmulticast_min and _max addresses if we have INET
compiled in.
1999-09-15 20:48:19 +00:00
itojun 6b9bfc0691 - Call in{,6}_pcbdetach if ipsec initialization is failed during PRU_ATTACH.
This situation happens on severe memory shortage.  We may need more
  improvements here and there.
- Grab IEEE802 address from IFT_ETHER card, even if the card is
  inserted after bootup time.  Is there any other card that can be
  inserted afterwards?  pcmcia fddi card? :-P
- RFC2373 u bit handling suggests that we SHOULD NOT copy interface id from
  ethernet card to pseudo interface, when ethernet card has IEEE802/EUI64
  with u bit != 0 (this means that IEEE802/EUI64 is not universally unique).
  Do not use such address as, for example, interface id for gif interface.
  (I have such an ethernet card myself)
  This may change interface id for your gif interface.  be careful upgrading
  rc files.

(sync with recent KAME)
1999-09-13 12:15:54 +00:00
thorpej 99584ccf61 M_HASCRC -> M_HASFCS, as suggested by Christoph Badura. 1999-08-05 02:07:38 +00:00
thorpej b51de33f23 In ether_input(), if M_HASCRC is set, trim the CRC off the packet. 1999-08-04 19:29:01 +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
bouyer cc6eca7553 mbuf should be allocated with M_DONTWAIT in ether_output(). This caused panics
when routing atalk.
1999-06-17 17:27:13 +00:00
thorpej f98d358a1f Rework layer 2 protocol input routines. Instead of calling e.g. ether_input()
directly, call the function pointer (*if_input)(ifp, m).  The input routine
expects the packet header to be at the head of the packet, and will adjust
as necessary.  Privatize the layer 2 input and output routines, allowing
*_ifattach() to set them up as appropriate.
1999-05-18 23:52:51 +00:00
thorpej 5fa25527ac Const poison ether_ifattach(). 1999-03-10 21:05:08 +00:00