Internet on FIRE

Added documentation on protocols.

Protocol hooks deserve an extra chapter (to come soon).

No more problems when protocols gets disabled during feeding.

Don't log state changes if nothing user-visible has changed.

Removed a lot of unused variables.

Please try compiling your code with --enable-warnings to see them. (The
unused parameter warnings are usually bogus, the unused variable ones
are very useful, but gcc is unable to control them separately.)

Fixed several bugs in protocol state machine. Reconfigurations and
restarts of BGP seem to work now.

Changed initialization of protocol list -- now we call proto_build() instead
of calling the protocols manually.

Implemented printing of dynamic attributes in `show route all'.

Each protocol can now register its own attribute class (protocol->attr_class,...

Bare skeleton of the BGP.

Great cleanup of debug messages. LOCAL_DEBUG turned off in most modules,
several debug() calls converted to DBG.

Added protocol debugging flags (protocol.h: D_xxx), parsing of them
in configuration files and commands for manipulating them.

Current debug message policy:

o  D_STATES, D_ROUTES and D_FILTERS are handled in generic code.
   o  Other debug flags should be handled in the protocols and whenever...

Killed protocol->priority. Protocol startup should be clean and hack-free now.
It seems everything still works (except for disable/enable/restart which hangs
sometimes, but it's another story).

Moved initlialization of protocol lists to global init. Argh.

Reworked proto lists -- each proto is now in two lists: the global one
(proto_list) and per-type one (original lists). A lot of things simplified.

Implemented `disable', `enable' and `restart' CLI commands.

Converted shutdown to a kind of reconfiguration, it's no more handled
as a exception in protocol state machines. Introduced a `shutdown'
CLI command. Killed few reconfiguration bugs.

Except for special protocols (nowadays only the kernel syncer), don't
export host and link scope routes.

Added proto_get_named() to be used in CLI commands to get protocol instance
of a given protocol with optionally given name. See `show static' for an
example.

Remember protocol instance in proto_config and use that for
`show protocols <name>'.

Added few basic commands: show status, show interfaces [summary],
show protocols (incomplete).

Protocol engine bug fixes:

o  Make proto_config->table always point to the right
      table even if it should be the default one.
   o  When shutting down, kill protocol in reverse order
      of their priority.
   o  When stopping a protocol down, disconnect it from...

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)....

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.

Allow input and output filters (only accept/reject style as we didn't define
modifying filters yet) to be attached to protocol instances.

Initialize allocated struct proto :-)

Added a hack forcing protocols with priority>0 to be started up
immediately. Grrr, need to find a real solution some day.

When protocols go down, prune the neighbor list.

Implemented real cleanup and pruning of routing table on protocol shutdown.

Implemented new configuration/reconfiguration interface and defined protocol
state machines. Full explanation will follow soon.

Handle disabled protocol instances.

Proto struct now contain (down | starting | up) state.

Split protocol init to building of protocol list and real protocol init.
Added kernel route table syncer skeleton.

Adding proto_dump_all() function

protos_init, not proto_init.