Commit graph

2496 commits

Author SHA1 Message Date
Pavel Machek
23b1539bf9 Filters upgraded - a bit. Moved code to filter.c because it is where
it belongs. (f-util.c stays there for auxiliary and non-important things.)
1999-04-07 12:11:08 +00:00
Martin Mares
7976a574b6 ip_pton: Avoid modification of the string we're converting. 1999-04-06 21:31:03 +00:00
Martin Mares
e2dc2f30ef Routing table core changes to support full route filtering:
o  Introduced rte_cow() which should be used for copying on write the
   rte's in filters. Each rte now carries a flag saying whether it's
   a real route (possessing table linkage and other insignia) or a local
   copy. This function can be expected to be fast since its fast-path
   is inlined.
o  Introduced rte_update_pool which is a linear memory pool used for
   all temporary data during rte_update. You should not reference it directly
   -- instead use a pool pointer passed to all related functions.
o  Split rte_update to three functions:

	rte_update	The front end: handles all checking, inbound
			filtering and calls rte_recalculate() for the
			final version of the route.
	rte_recalculate	Update the table according to already filtered route.
	rte_announce	Announce routing table changes to all protocols,
			passing them through export filters and so on.

   The interface has _not_ changed -- still call rte_update() and it will
   do the rest for you automagically.
o  Use new filtering semantics to be explained in a separate mail.
1999-04-05 20:25:03 +00:00
Martin Mares
9e0e485e50 Added some new protocol hooks (look at the comments for better explanation):
make_tmp_attrs		Convert inline attributes to ea_list
	store_tmp_attrs		Convert ea_list to inline attributes
	import_control		Pre-import decisions
1999-04-05 20:17:59 +00:00
Martin Mares
5056c559c4 Changed syntax of attaching filters to protocols to hopefully the final
version:

	EXPORT <filter-spec>	for outbound routes (i.e., those announced
				by BIRD to the rest of the world).
	IMPORT <filter-spec>	for inbound routes (i.e., those imported
				by BIRD from the rest of the world).

where <filter-spec> is one of:

	ALL			pass all routes
	NONE			drop all routes
	FILTER <name>		use named filter
	FILTER { <filter> }	use explicitly defined filter

For all protocols, the default is IMPORT ALL, EXPORT NONE. This includes
the kernel protocol, so that you need to add EXPORT ALL to get the previous
configuration of kernel syncer (as usually, see doc/bird.conf.example for
a bird.conf example :)).
1999-04-05 20:15:31 +00:00
Martin Mares
63a381dbf5 Several filter changes. (Pavel, please check if they are OK.)
o  Changed parameters of f_run. Changed rtein+rteout pair to rte pointer
      passed by reference, added ea_list of temporary attrs again passed
      by reference and finally added a pointer to memory pool for storing
      temporary data (new ea_lists's, temporary rta's etc.).
   o  Re-ordered result codes, so that all accepts come before all rejects.
   o  Introduced FILTER_ACCEPT and FILTER_REJECT dummy values (will be
      used in protocol configurations).
   o  Added filter_name() which returns name of a filter or ACCEPT/REJECT
      for the dummies.
1999-04-05 20:10:31 +00:00
Martin Mares
d4ff748224 Use a more reasonable pool chunk size: 4080 bytes seem to be a good
approximation of a integral fraction of page size even if both malloc
overhead and chunk header space is counted.
1999-04-05 20:06:02 +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
69ec9087ad Added new protocol hook for dumping of protocol-dependent route
attributes.

Please implement in all protocols.
1999-04-03 13:01:58 +00:00
Martin Mares
73c7bed168 Defined CONFIG_SELF_CONSCIOUS whenever the kernel scanner is able
to distinguish between our own routes and alien ones.
1999-04-03 13:00:52 +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
6accdf4f43 Updated the TODO list. 1999-03-29 20:46:00 +00:00
Martin Mares
fb71b23e60 Remember that we can run device syncer without kernel syncer
and vice versa now.
1999-03-29 20:33:45 +00:00
Martin Mares
78d5ec1504 Please don't commit debugging code which makes BIRD exit before anything
actually starts to happen. Grrr.
1999-03-29 20:28:25 +00:00
Martin Mares
e4912e3594 Prefer gm4' over m4' (due to BSD et al.). 1999-03-29 20:26:32 +00:00
Pavel Machek
ba92164871 Update of filters towards new interface. 1999-03-29 20:21:28 +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
6c02d83f4d Added FIXME: If a strange interface appears, ignore it instead of only
writing an error message...
1999-03-29 19:56:32 +00:00
Martin Mares
f5c687f791 Added lp_flush() which flushes contents of a linear pool, leaving all the
memory available for subsequent allocations from the same pool. Both flushing
and re-using the memory costs just few instructions.
1999-03-29 19:35:47 +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
6134024815 #define NULL if not defined by system includes. 1999-03-29 19:13:36 +00:00
Martin Mares
7f400d1c62 After today's lengthy discussions about filter syntax, let's clean up
whitespace/semicolon rules for whole config file:

   o  All non-zero amounts of whitespace are equivalent to single space
      (aka `all the whitespace has been born equal' ;-)).
   o  Comments count as whitespace.
   o  Whitespace has no syntactic signifance (it can only separate lexical
      elements).
   o  Consequence: line ends are no longer treated as `;'s.
   o  Every declaration must be terminated by an explicit `;' unless
      or by a group enclosed in `{' and `}'.
1999-03-29 19:04:14 +00:00
Martin Mares
1127ac6ec7 Cleaned up system configuration files -- removed few obsolete parameters,
documented the remaining ones (sysdep/cf/README).

Available configurations:

   o  linux-20: Old Linux interface via /proc/net/route (selected by default
		on pre-2.1 kernels).
   o  linux-21: Old Linux interface, but device routes handled by the
		kernel (selected by default for 2.1 and newer kernels).
   o  linux-22: Linux with Netlink (I play with it a lot yet, so it isn't
		a default).
   o  linux-ipv6: Prototype config for IPv6 on Linux. Not functional yet.
1999-03-27 22:51:05 +00:00
Martin Mares
7dc4827c96 Added everything protocols need to know about multiple routing tables,
i.e. struct proto now contains field 'table' pointing to routing table
the protocol is attached to. Use this instead of &master_table.

Modified all protocols except the kernel syncer to use this field.
1999-03-26 21:50:43 +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
739ebd8e82 Allow different instances of the same protocol with identical preferences. 1999-03-26 21:38:02 +00:00
Martin Mares
4ba84ebc82 Slightly better generator of default protocol instance names. 1999-03-26 21:37:29 +00:00
Martin Mares
241b7311ec Don't compile OSPF by default. 1999-03-26 21:35:28 +00:00
Martin Mares
b5239f2238 Don't try to manipulate neighbor lists for copied interface structures.
This avoids few nasty references to free memory.
1999-03-26 21:33:36 +00:00
Martin Mares
f79a749d0b Removed our declaration of RTPROT_BIRD since Alexey has assigned
us a real protocol number in 2.2.4 kernel.
1999-03-24 09:23:34 +00:00
Martin Mares
421838ffef rte_update: Check sanity of incoming entries. Throw out (and log) all routes
to bogus prefixes and non-local routes to host scope addresses.
1999-03-17 15:01:07 +00:00
Martin Mares
529c414953 Allow input and output filters (only accept/reject style as we didn't define
modifying filters yet) to be attached to protocol instances.
1999-03-17 14:31:26 +00:00
Martin Mares
e0f2e42f4f A couple of filter tweaks:
o  Introduced struct filter which serves as an external reference
      to filter. Using struct symbol for this is unwise since it doesn't
      allow extra information attached to the filter and it also forces
      all filters to be named.
   o  Implemented config rule 'filter' which matches either named filter
      or an embedded unnamed filter (`{ <filter> }').
   o  Fixed totally bogus comment at the top of filter.h.
   o  Added a missing prototype for f_run() to filter.h.
1999-03-17 14:29:39 +00:00
Martin Mares
c612a3be31 Removed the `rta_same' hook since it's no longer needed (all protocols
needing some local information should use extended attrs and cached
rta's).
1999-03-17 13:13:18 +00:00
Martin Mares
b77ae37d11 Implemented extended route attributes and all related functions. 1999-03-17 13:09:09 +00:00
Pavel Machek
9a38757c6a Initialize pointers to functions so that code is actually alive. 1999-03-17 13:05:25 +00:00
Pavel Machek
3c7ad64c57 Compilation fix for mj. 1999-03-17 13:04:33 +00:00
Pavel Machek
29df5739c4 Don't segfault on unknown interface. 1999-03-17 10:20:23 +00:00
Pavel Machek
d36d838df5 accept & reject should now work 1999-03-17 10:19:07 +00:00
Ondrej Filip
c1f8dc9149 Yes, joining the crew. Sorry for being late. Added dummy functions for OSPF. 1999-03-09 22:27:43 +00:00
Pavel Machek
2575593e0f Resolved conflicts, you no longer need to wrap constants in const() 1999-03-09 14:45:27 +00:00
Pavel Machek
1aa5cf1c61 Added '=' to operator list 1999-03-09 14:44:43 +00:00
Pavel Machek
b700582445 Filters are now a tiny bit stronger (if is actually working ;-) 1999-03-08 20:30:06 +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