Internet on FIRE

BGP: Enhanced route refresh (RFC 7313) support

Also hook feed_done is renamed to feed_end.

Relax BGP neighbor parameter

Permit specifying neighbor address, AS number and port independently.
Add 'interface' parameter for specifying interface for link-local
sessions independently.

Thanks to Alexander V. Chernikov for the original patch.

Make BGP protocol instance search a separate function

Thanks to Alexander V. Chernikov for the patch.

Link state support in BGP.

Configurable fast shutdown of a BGP session when an interface loses link.

Allows to configure different remote port for BGP sessions.

Thanks to João Taveira Araújo for the original patch.

Fixes some minor issues in graceful restart.

BGP graceful restart support.

Also significant core protocol state changes needed for that,
global graceful restart recovery state and kernel proto support
for recovery.

Merge branch 'add-path'

Finishes add-path.

Fixes some bugs and uses generic hash implementation.

Enables multihop mode for IBGP by default.

This is more consistent with common usage and also with the behavior of
other implementations (Cisco, Juniper).

Also changes the default for gw mode to be based solely on
direct/multihop.

Minor fixes.

Fixes a bug related to mixed up neighbor events in BGP.

Neighbor events related to received route next hops got mixed up with
sticky neighbor node for an IP of the BGP peer. If a neighbor for a next
hop disappears, BGP session is shut down.

Fixes a problem with BGP neighbors, link-local addresses and locking.

Thanks to Fritz Grimpen for the bugfix.

Implements interface masks for choosing router id.

Router ID could be automatically determined based of subset of
ifaces/addresses specified by 'router id from' option. The patch also
does some minor changes related to router ID reconfiguration.

Thanks to Alexander V. Chernikov for most of the work.

Allows rejected routes to be kept and examined.

When 'import keep rejected' protocol option is activated, routes
rejected by the import filter are kept in the routing table, but they
are hidden and not propagated to other protocols. It is possible to
examine them using 'show route rejected'.

Fixes BGP subcode during global shutdown.

Finalize RA_ACCEPTED handling.

Fixes in generalized import limits.

Implement RA_ACCEPTED mode of route propagation.

Assign default protocol preference via proto_config_new().

The patch from Alexander V. Chernikov.

Allows sticky link-local neighbors.

Allows using NEF_STICKY neighbors with link-local addresses. This is
used for static route nexthops, they can be specified like fe80::1%eth0
.

Implements protocol templates.

Based on the patch from Alexander V. Chernikov.
Extended to support almost all protocols.
Uses 'protocol bgp NAME from TEMPLATE { ... }' syntax.

The generalized TTL security mechanism (RFC 5082) support.

Thanks to Alexander V. Chernikov for the patch.

Fixes a problem with BGP protocols and implicit router IDs.

Change default for handling missing link-local addresses on route servers.

Implements proper multihop BGP.

Also does some incompatible changes to config file syntax,
like removing 'via IP' from multihop option.

Disable BGP protocol when cannot open listening socket.

Implements BGP 'show protocols' info details.

Moves errno.h include.

Implements MRTdump feature.

Implements BGP route refresh.

Implements protocol-specific router id and updates documentation.

Passive option.

Replace 'bind' option with 'listen' option.

To be consistent with other daemons.

Minor BGP changes related to error wait time.

Differentiate between error delay and connect/reconnect delay.

The difference is here to reject incoming connections in the
first case.

Changes pipes to transfer all routes between routing table, not just optimal routes.

Fixes handling of 'next hop self' and 'source address' configuration
options.

Update capability handshake options

Add 'capabilities' option, change default behavior to advertise ipv4,
add some checks and ignore incoming capabilities when capabilities
are disabled.

Fixes bug related to reconfiguration of BGP.

BGP keeps its copy of configuration ptr and didn't update it during
reconfiguration. But old configuration is freed during reconfiguration.
That leads to unnecessary reset of BGP connection during reconfiguration...

Multihop BGP was completely broken, because listening socket has always
ttl 1.

Implementation of an option for disabling AS4 support per BGP instance.

Implementation of MD5 authentication of BGP sessions.

Staticized lots of local functions.

Rewritten the I/O loop. All socket operations are now safe, meaning that
you can delete the socket from anywhere in the hooks and nothing should break.
Also, the receive/transmit buffers are now regular xmalloc()'ed buffers,
not separate resources which would need shuffling around between pools....

Better selection of link-local NLRI addresses, at least for our own
address. Need to do it better for the other neighbors -- the current
solution works only if they use the standard 64+64 global addresses
and the interface identifier in lower 64 bits is the same as for the...

Don't accept incoming connections when the neighbor is not up.

Spelling fixes to progdoc.

BGP now reports originating AS and origin type in get_route_info().

The bgp_list is gone. Incomming connections are now handled in a much
more straightforward manner by scanning the active configuration for
matching protocols.