Commit graph

139 commits

Author SHA1 Message Date
Martin Mares
a07e9d8235 Added --with-sysinclude to allow explicitly setting where kernel includes
reside, so that you can easily switch between 2.0 and 2.2 ones.

Check existence of <linux/rtnetlink.h> for linux-22 configs to make sure
we're using the correct set of includes.
1999-05-21 14:09:06 +00:00
Martin Mares
b23c5e0ff4 Added ip_skip_header() and modified OSPF to use it. 1999-05-14 18:03:09 +00:00
Martin Mares
a2697f02ac Netlink support for secondary interface addresses. 1999-05-07 13:46:16 +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
ec8b579e9c Recognize site scope for IPv4 addresses (prefixes reserved for private
networks).

Removed old #ifndef logic which was used to avoid IPv4/IPv6 clashes
before conditionals in Modules lists were introduced.
1999-04-27 16:03:17 +00:00
Martin Mares
08e2d6259a Removed TOS support. This simplifies many things a lot. 1999-04-12 18:01:07 +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
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
6accdf4f43 Updated the TODO list. 1999-03-29 20:46:00 +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
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
7972248d5d Netlink module supports interface scan on startup. Working on more. 1999-03-02 18:37:02 +00:00
Martin Mares
b982b6db2b Implemented netlink protocol parsing functions. More to come tomorrow. 1999-03-01 22:31:27 +00:00
Martin Mares
bdb95a21a4 Added skeletal version of Linux netlink interface. It doesn't work yet,
but the framework is there and I'll try finish it soon.
1999-03-01 20:17:46 +00:00
Martin Mares
12be9b8c18 Pruned the TODO list. 1999-03-01 17:51:29 +00:00
Martin Mares
b5fe3dc21c Cleaned up TODO file.
That's all for today, midnight gets closer.
1999-02-13 22:13:04 +00:00
Martin Mares
726141746b '#' comments in config files are equivalent to end of line, therefore
also to implicit ';'.
1999-02-13 21:34:33 +00:00
Martin Mares
7f3d1a0850 Squashed one bug in timing of route scans. 1999-02-13 19:57:19 +00:00
Martin Mares
4e9498cbb1 config->router_id works again. 1999-02-13 18:42:00 +00:00
Martin Mares
67bd949a52 Real implementation of protocol state machines. Delayed startup/shutdown
should work now. Initial feeding of protocols by interfaces/routes is
done from the event queue to prevent unwanted recursion.
1999-02-11 22:59:06 +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
31b3e1bbf5 Implemented new configuration/reconfiguration interface and defined protocol
state machines. Full explanation will follow soon.
1999-02-05 21:37:34 +00:00
Martin Mares
49e7e5ee0b New makefiles. Includes support for out-of-source-tree builds. 1999-01-10 00:18:32 +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
Martin Mares
8e66a0ebb9 Hopefully finished kernel syncer (krt) rewrite:
o  Interface syncing is now a part of krt and it can have configurable
     parameters. Actually, the only one is scan rate now :)
  o  Kernel routing table syncing is now synchronized with interface
     syncing (we need the most recent version of the interface list
     to prevent lots of routes to non-existent destinations from
     appearing). Instead of its own timer, we just check if it's
     route scan time after each iface list scan.
  o  Syncing of device routes implemented.
  o  CONFIG_AUTO_ROUTES should control syncing of automatic device routes.
  o  Rewrote krt_remove_route() to really remove routes :)
  o  Better diagnostics.
  o  Fixed a couple of bugs.
1998-12-08 18:37:58 +00:00
Martin Mares
f6bd206607 All static routes except for device ones should work and appear/disappear
when their destination comes on/off link. Deserves better testing :)

See example in bird.conf.
1998-12-06 23:13:31 +00:00
Martin Mares
a1bf6440b5 Added skeleton of static route protocol. 1998-12-06 18:21:23 +00:00
Martin Mares
50d8424ad1 Added configuration of the device internal protocol. This is primarily
intended to serve as an example of interface pattern list use. As a side
effect, you can disable generating of device routes by disabling
this protocol.
1998-11-29 22:03:58 +00:00
Martin Mares
5cd462f291 wc -l TODO decreased. 1998-11-29 14:51:47 +00:00
Martin Mares
0b62c3a7c7 Trivial 15-line bison excercise: Implemented expressions including
user-defined numeric symbols. Whenever possible, use `expr' instead
of `NUM' to get full express ion power :-)
1998-11-27 21:32:45 +00:00
Martin Mares
b6903c948b Updated TODO. 1998-10-19 18:18:12 +00:00
Martin Mares
16a8ba30a9 We parse /proc/net/route and flag RT entries according to it. More to come
today in the morning...
1998-10-18 22:25:56 +00:00
Martin Mares
8b1688177b * Please distinguish between DGB() and debug(). 1998-10-18 12:48:15 +00:00
Martin Mares
c93214d442 o There are cases when SIOCGIFINDEX is defined, but it doesn't work. When
this happens, don't reject the whole interface, just mark it as index 0.
o  Removed Pavel's comment about EFAULT and SIGSEGV. EFAULT is a valid return
   code for cases where the buffer is too small.
o  Commented out the smart interface list size logic temporarily as it seems
   Linux 2.0 SIOCGIFCONF doesn't react to ifc_req==NULL sanely. Replaced it
   by exponential stepping.
1998-10-13 19:57:33 +00:00
Martin Mares
ecacdfa434 Added local version of sprintf (bsprintf and bvsprintf) offering few new
format strings:

	%I	IP address
	%#I	IP address in hexadecimal
	%1I	IP address padded to full length
	%m	strerror(errno)
1998-06-17 14:31:36 +00:00
Martin Mares
4cc78c5082 - Rewrote whole interface logic. Removed support for multiple addresses per
interface since it makes much trouble everywhere. Instead, we understand
  secondary addresses as subinterfaces.

- In case interface addresses or basic flags change, we simply convert it
  to a down/up sequence.

- Implemented the universal neighbour cache. (Just forget what did previous
  includes say of neighbour caching, this one is brand new.)
1998-06-01 21:41:11 +00:00
Martin Mares
5222c46ceb DBG now calls debug() instead of sending it to log(). 1998-05-26 21:36:17 +00:00
Martin Mares
18c8241a91 BIRD library: The story continues.
Complete resource manages and IP address handling.
1998-05-03 16:43:39 +00:00
Martin Mares
58ef912c6b First look at data structures. More to come tomorrow... 1998-04-22 12:58:34 +00:00