Commit graph

81 commits

Author SHA1 Message Date
Martin Mares
7de45ba4a0 Kernel route syncer supports multiple tables.
The changes are just too extensive for lazy me to list them
there, but see the comment at the top of sysdep/unix/krt.c.
The code got a bit more ifdeffy than I'd like, though.

Also fixed a bunch of FIXME's and added a couple of others. :)
1999-08-03 19:33:22 +00:00
Martin Mares
9273035403 Changes to interface handling on traditional Unices:
o  Aliases are interpreted as secondary addresses.
  o  When the system doesn't supply interface indices, generate
     our ones.
1999-08-03 19:30:20 +00:00
Martin Mares
913f7dc9f2 Added functions for parsing and formatting of dates. 1999-08-03 19:29:27 +00:00
Martin Mares
bd7f1081f2 Grrr, the "obvious fix" to multicasting code from yesterday was
fundamentally wrong. Reversed.
1999-06-01 15:31:43 +00:00
Martin Mares
c7208da0b7 Fix potential multicasting bug. 1999-05-31 20:28:46 +00:00
Martin Mares
bb027be1e2 Added extra argument to rt_update hook which contains a pointer to the
temporary attribute list.
1999-05-31 18:55:35 +00:00
Martin Mares
1c3c9dceb3 Removed one unused structure field. 1999-05-21 14:29:23 +00:00
Martin Mares
4f1a6d27b9 Kill remaining master_table relics in KRT code.
Make all protocols pass routing table to rte_update and rte_discard.
1999-05-17 20:16:53 +00:00
Martin Mares
9a158361da I rewrote the interface handling code, so that it supports multiple
addresses per interface (needed for example for IPv6 support).

Visible changes:

o  struct iface now contains a list of all interface addresses (represented
   by struct ifa), iface->addr points to the primary address (if any).
o  Interface has IF_UP set iff it's up and it has a primary address.
o  IF_UP is now independent on IF_IGNORED (i.e., you need to test IF_IGNORED
   in the protocols; I've added this, but please check).
o  The if_notify_change hook has been simplified (only one interface pointer
   etc.).
o  Introduced a ifa_notify_change hook. (For now, only the Direct protocol
   does use it -- it's wise to just listen to device routes in all other
   protocols.)
o  Removed IF_CHANGE_FLAGS notifier flag (it was meaningless anyway).
o  Updated all the code except netlink (I'll look at it tomorrow) to match
   the new semantics (please look at your code to ensure I did it right).

Things to fix:

o  Netlink.
o  Make krt-iface interpret "eth0:1"-type aliases as secondary addresses.
1999-05-06 21:38:11 +00:00
Martin Mares
4c5e5e3a1c Multicasts once again: When using SO_BINDTODEVICE, don't specify IP address
of the interface.
1999-04-14 12:29:47 +00:00
Martin Mares
1b50a1e4be Next attempt to get SO_BINDTODEVICE work :) 1999-04-14 11:39:07 +00:00
Martin Mares
36154beb70 Use SO_BINDTODEVICE if we're using old multicast API (i.e., struct ip_mreq
and not ip_mreqn). This should get multicasts on unnumbered PtP links work.
1999-04-14 11:21:02 +00:00
Martin Mares
01bd7759b2 Ignore alias interfaces (some day, we will treat them as pure secondary
interface addresses).
1999-04-12 18:07:05 +00:00
Martin Mares
08e2d6259a Removed TOS support. This simplifies many things a lot. 1999-04-12 18:01:07 +00:00
Martin Mares
61fb537c62 Use struct ip_mreqn' instead of struct ip_mreq' for multicast
operations on 2.1/2.2 kernels. This allows passing of real interface
indexes instead of referencing interfaces by their IP addresses which
fails badly in presence of unnumbered interfaces.

Unfortunately, this structure is not visible with glibc 2.0 as it provides
its own networking headers :-(  Both libc5 and glibc 2.1 should be OK.
1999-04-12 15:27:56 +00:00
Martin Mares
5a99ade413 Fixed a couple of bugs in handling of multicast sockets.
See comments in lib/socket.h for a detailed guide on how to use them.
1999-04-12 14:57:46 +00:00
Martin Mares
49ed70b48e Portability fixes. 1999-04-07 14:25:56 +00:00
Martin Mares
c10421d3d4 More changes to the kernel syncer.
o  Now compatible with filtering.
o  Learning of kernel routes supported only on CONFIG_SELF_CONSCIOUS
   systems (on the others it's impossible to get it semantically correct).
o  Learning now stores all of its routes in a separate fib and selects
   the ones the kernel really uses for forwarding packets.
o  Better treatment of CONFIG_AUTO_ROUTES ports.
o  Lots of internal changes.
1999-04-03 13:05:18 +00:00
Martin Mares
fe662dfd78 Fixed `too many interfaces' cases. 1999-04-02 13:38:54 +00:00
Pavel Machek
0498d92f95 Believe it or not, printf()'s does not work too much without this one. 1999-04-02 11:45:55 +00:00
Martin Mares
8cda9cdbcf Argh, the fix was wrong. 1999-04-01 19:23:59 +00:00
Martin Mares
e4241f24f2 Portability fixes. 1999-04-01 15:35:15 +00:00
Martin Mares
abae6e9cd3 First few FreeBSD portability fixes. 1999-04-01 15:33:52 +00:00
Martin Mares
5bc512aa3a Clarify resource dumps and include them in the main debugging dump. 1999-03-29 20:14:33 +00:00
Martin Mares
3f2a21fd34 Don't try to delete interface routes on CONFIG_AUTO_ROUTES systems. 1999-03-29 20:14:00 +00:00
Martin Mares
f54801ffed Moved all system-dependent #include's containing endianity conversion
functions to sysdep header endian.h.
1999-03-29 19:14:43 +00:00
Martin Mares
7e5f5ffdda Moved to a much more systematic way of configuring kernel protocols.
o  Nothing is configured automatically. You _need_ to specify
     the kernel syncer in config file in order to get it started.
  o  Syncing has been split to route syncer (protocol "Kernel") and
     interface syncer (protocol "Device"), device routes are generated
     by protocol "Direct" (now can exist in multiple instances, so that
     it will be possible to feed different device routes to different
     routing tables once multiple tables get supported).

See doc/bird.conf.example for a living example of these shiny features.
1999-03-26 21:44:38 +00:00
Martin Mares
111213f0b6 Fixed processing of !krt_capable() routes. Converted device route decisions
to the krt_capable mechanism as well.
1999-03-04 19:00:31 +00:00
Martin Mares
e16155ae4a KRT: Implemented asynchronous route / interface state notifications
(via Netlink). Tweaked kernel synchronization rules a bit. Discovered
locking bug in kernel Netlink :-)

Future plans: Hunt all the bugs and solve all the FIXME's.
1999-03-04 18:36:18 +00:00
Martin Mares
7a2105becd Use dmalloc instead of EFence when available (dmalloc has lot of improvements
over EFence and also hopefully smaller memory overhead, but sadly it's non-free
for commercial use).

If the DMALLOC_OPTIONS environment variable is not set, switch on `reasonable'
checks by default.

Also introduced mb_allocz() for cleared mb_alloc().
1999-03-04 11:36:26 +00:00
Martin Mares
53b7a2982a Fix several things I broke today. 1999-03-03 20:55:35 +00:00
Martin Mares
2d14045224 Rewrote the kernel syncer. The old layering was horrible.
The new kernel syncer is cleanly split between generic UNIX module
and OS dependent submodules:

  -  krt.c (the generic part)
  -  krt-iface (low-level functions for interface handling)
  -  krt-scan (low-level functions for routing table scanning)
  -  krt-set (low-level functions for setting of kernel routes)

krt-set and krt-iface are common for all BSD-like Unices, krt-scan is heavily
system dependent (most Unices require /dev/kmem parsing, Linux uses /proc),
Netlink substitues all three modules.

We expect each UNIX port supports kernel routing table scanning, kernel
interface table scanning, kernel route manipulation and possibly also
asynchronous event notifications (new route, interface state change;
not implemented yet) and build the KRT protocol on the top of these
primitive operations.
1999-03-03 19:49:56 +00:00
Martin Mares
e35ef181a4 o The if_change_too_big_p change was too high-spirited. Fixed.
o  Introduced if_find_by_index()
o  Recognizing two types of interface updates: full update (starting with
   if_start_update(), ending with if_end_update(), guaranteed to see
   all existing interfaces) and a partial update (only if_update(),
   usually due to asynchronous interface notifications).
1999-03-02 18:36:09 +00:00
Martin Mares
bcbd8cc3be Interface logic changes:
o  Introduced IF_LINK_UP flag corresponding to real link state.
o  Allowed addressless interfaces.
o  IF_UP is now automatically calculated and set iff the interface
   is administratively up, has link up and has an IP address assigned.
   It may be IF_IGNORED, though (as in case of the loopback).
o  Any changes which include up/down transition are considered small
   enough to not provoke artificial upping and downing of the interface.
o  When an interface disappears (i.e., it wasn't seen in the last scan),
   we announce this change only once.
o  IF_LOOPBACK implies IF_IGNORE.
1999-03-02 17:28:06 +00:00
Martin Mares
b4b3b39e20 Added SK_MAGIC type sockets for internal use by system dependent code,
especially for netlink communication.
1999-03-01 22:30:33 +00:00
Martin Mares
025d14cd5a Use traditional Unix route/iface interface only when CONFIG_NETLINK
is not defined. Also moved declarations of Unix iface logic to krt.h.
1999-03-01 19:05:58 +00:00
Martin Mares
013a9b91fe When shutting down, remove all routes (except for RTS_INHERIT and RTS_DEVICE
routes) from kernel routing tables unless the "persist" switch is set.
1999-02-13 20:46:03 +00:00
Martin Mares
0a2e9d9f56 Moved sanity check of protocol state during annoucements to rte_announce. 1999-02-13 20:19:24 +00:00
Martin Mares
f4aabcee62 Perform gracious shutdown upon receipt of SIGTERM. Finally we can
test the whole protocol shutdown code... :)
1999-02-13 20:15:36 +00:00
Martin Mares
4c9dd1e4b9 Synchronize signals to the main select/event/timer loop.
Parse command line options.
1999-02-13 19:43:21 +00:00
Martin Mares
4e9498cbb1 config->router_id works again. 1999-02-13 18:42:00 +00:00
Martin Mares
14dea0ed25 Run the event queue before writing SIGUSR dumps. 1999-02-11 22:51:15 +00:00
Martin Mares
e8f73195fa Added simple event scheduling system to avoid recursive calling
of various callbacks.

Events are just another resource type objects (thus automatically freed
and unlinked when the protocol using them shuts down). Each event can
be linked in at most one event list. For most purposes, just use the
global event list handled by the following functions:

	ev_schedule	Schedule event to be called at the next event
			scheduling point. If the event was already
			scheduled, it's just re-linked to the end of the list.
	ev_postpone	Postpone an already scheduled event, so that it
			won't get called. Postponed events can be scheduled
			again by ev_schedule().

You can also create custom event lists to build your own synchronization
primitives. Just use:

	ev_init_list	to initialize an event list
	ev_enqueue	to schedule event on specified event list
	ev_postpone	works as well for custom lists
	ev_run_list	to run all events on your custom list
	ev_run		to run a specific event and dequeue it
1999-02-11 21:18:26 +00:00
Martin Mares
10d807d000 Synced kernel interface to new interface. 1999-02-05 21:38:50 +00:00
Martin Mares
31b3e1bbf5 Implemented new configuration/reconfiguration interface and defined protocol
state machines. Full explanation will follow soon.
1999-02-05 21:37:34 +00:00
Pavel Machek
ca3d562b24 filters_init() renamed to filters_postconfig(). 1999-01-15 18:13:55 +00:00
Pavel Machek
b9d70dc84e Filters, second try. This time they have their own directory. 1999-01-15 16:49:17 +00:00
Pavel Machek
41183888ee Properly initialize filters. Also bumped version to 0.0.0 as it
actually does something.
1999-01-15 14:40:50 +00:00
Martin Mares
08c69a7720 die() -> bug() where appropriate. 1998-12-20 14:27:37 +00:00
Martin Mares
98e87c8628 Finer grained logging levels:
#define L_DEBUG "\001"   /* Debugging messages */
#define L_INFO "\002"    /* Informational messages */
#define L_WARN "\003"    /* Warnings */
#define L_ERR "\004"     /* Errors */
#define L_AUTH "\005"    /* Authorization failed etc. */
#define L_FATAL "\006"   /* Fatal errors */
#define L_TRACE "\002"   /* Protocol tracing */
#define L_INFO "\003"    /* Informational messages */
#define L_REMOTE "\004"  /* Remote protocol errors */
#define L_WARN "\004"    /* Local warnings */
#define L_ERR "\005"     /* Local errors */
#define L_AUTH "\006"    /* Authorization failed etc. */
#define L_FATAL "\007"   /* Fatal errors */
#define L_BUG "\010"     /* BIRD bugs */

Introduced bug() which is like die(), but with level L_BUG. Protocols
should _never_ call die() as it should be used only during initialization
and on irrecoverable catastrophic events like out of memory.

Also introduced ASSERT() which behaves like normal assert(), but it calls
bug() when assertion fails. When !defined(DEBUGGING), it gets ignored.
1998-12-20 14:24:35 +00:00