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path: root/proto/bgp/bgp.h
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2022-07-11Export tables merged with BGP prefix hashMaria Matejka
Until now, if export table was enabled, Nest was storing exactly the route before rt_notify() was called on it. This was quite sloppy and spooky and it also wasn't reflecting the changes BGP does before sending. And as BGP is storing the routes to be sent anyway, we are simply keeping the already-sent routes in there to better rule out unneeded reexports. Some of the route attributes (IGP metric, preference) make no sense in BGP, therefore these will be probably replaced by something sensible. Also the nexthop shown in the short output is the BGP nexthop.
2022-06-16Showing the nexthop resolution target in import tablesMaria Matejka
2022-06-08Merge commit '938742decc6e1d6d3a0375dd012b75172e747bbc' into haugesundMaria Matejka
2022-06-08Merge commit '950775f6fa3d569a9d7cd05e33538d35e895d688' into haugesundMaria Matejka
There were quite a lot of conflicts in flowspec validation code which ultimately led to some code being a bit rewritten, not only adapted from this or that branch, yet it is still in a limit of a merge.
2022-05-31Merge commit '4fe9881d625f10e44109a649e369a413bd98de71' into haugesundMaria Matejka
2022-05-30Merge commit 'd8661a4397e4576ac404661b192dd99d928e7890' into haugesundMaria Matejka
2022-05-30Merge commit '17f91f9e6e70f7e3f29502e854823c0d48571eaa' into haugesundMaria Matejka
2022-05-30Merge commit 'ef4313e1667a8745c8d8813ac78342ec7c035895' into haugesundMaria Matejka
2022-05-30Merge commit 'ef6a903e6f44b467f9606018446095521ad01ef1' into haugesundMaria Matejka
2022-05-30Merge commit '0d0f6554a5c233bf2bf830ae319191c4b1808d49' into haugesundMaria Matejka
2022-05-30Merge commit '4a23ede2b056a41456790cc20a0c3d92a7137693' into haugesundMaria Matejka
2022-05-30Squashing the route attribute structure into one level.Maria Matejka
For now, all route attributes are stored as eattrs in ea_list. This should make route manipulation easier and it also allows for a layered approach of route attributes where updates from filters will be stored as an overlay over the previous version.
2022-05-30Route destination field merged with nexthop attribute; splitting flowspec ↵Maria Matejka
validation result out. As there is either a nexthop or another destination specification (or othing in case of ROAs and Flowspec), it may be merged together. This code is somehow quirky and should be replaced in future by better implementation of nexthop. Also flowspec validation result has its own attribute now as it doesn't have anything to do with route nexthop.
2022-05-26Moved hostentry to eattrMaria Matejka
2022-05-04Explicit definition structures of route attributesMaria Matejka
Changes in internal API: * Every route attribute must be defined as struct ea_class somewhere. * Registration of route attributes known at startup must be done by ea_register_init() from protocol build functions. * Every attribute has now its symbol registered in a global symbol table defined as SYM_ATTRIBUTE * All attribute ID's are dynamically allocated. * Attribute value custom formatting hook is defined in the ea_class. * Attribute names are the same for display and filters, always prefixed by protocol name. Also added some unit testing code for filters with route attributes.
2022-05-04Local route attributes are always allocated from tmp_linpoolMaria Matejka
2022-05-04Splitting route data structures out to libMaria Matejka
2022-05-04Unified attribute and filter typesMaria Matejka
This commit removes the EAF_TYPE_* namespace completely and also for route attributes, filter-based types T_* are used. This simplifies fetching and setting route attributes from filters. Also, there is now union bval which serves as an universal value holder instead of private unions held separately by eattr and filter code.
2022-04-06Unsetting route attributes without messing with type systemMaria Matejka
2022-03-09Merge commit '1b9189d5' into haugesundMaria Matejka
2022-03-09Merge commit '60880b539b8886f76961125d89a265c6e1112b7a' into haugesundMaria Matejka
2022-03-09BGP Flowspec validation: Removed in-route optimization for multithreading ↵Maria Matejka
compatibility
2022-03-09Merge commit 'e42eedb9' into haugesundMaria Matejka
2022-03-09Merge commit 'd5a32563' into haugesundMaria Matejka
2022-03-02Replacing BGP temporary linpools by the common temporary linpoolMaria Matejka
2022-02-06Merge branch 'oz-trie-table'Ondrej Zajicek (work)
2022-02-06BGP: Implement flowspec validation procedureOndrej Zajicek (work)
Implement flowspec validation procedure as described in RFC 8955 sec. 6 and RFC 9117. The Validation procedure enforces that only routers in the forwarding path for a network can originate flowspec rules for that network. The patch adds new mechanism for tracking inter-table dependencies, which is necessary as the flowspec validation depends on IP routes, and flowspec rules must be revalidated when best IP routes change. The validation procedure is disabled by default and requires that relevant IP table uses trie, as it uses interval queries for subnets.
2022-01-28BGP: Use proper class in attribute error messagesOndrej Zajicek (work)
Most error messages in attribute processing are in rx/decode step and these use L_REMOTE log class. But there are few that are in tx/export step and these should use L_ERR log class. Use tx-specific macro (REJECT()) in tx/export code and rename field err_withdraw to err_reject in struct bgp_export_state to ensure that appropriate error reporting macros are called in proper contexts.
2022-01-24BGP: Log route updates that were changed to withdrawsOndrej Zajicek (work)
Typical BGP error handling is treat-as-withdraw, where an invalid route is replaced with a withdraw. Log route network when it happens.
2022-01-09BGP: Add option 'free bind'Ondrej Zajicek (work)
The BGP 'free bind' option applies the IP_FREEBIND/IPV6_FREEBIND socket option for the BGP listening socket. Thanks to Alexander Zubkov for the idea.
2021-11-09Split route data structure to storage (ro) / manipulation (rw) structures.Maria Matejka
Routes are now allocated only when they are just to be inserted to the table. Updating a route needs a locally allocated route structure. Ownership of the attributes is also now not transfered from protocols to tables and vice versa but just borrowed which should be easier to handle in a multithreaded environment.
2021-10-13Preexport: No route modification, no linpool neededMaria Matejka
2021-10-13BGP: Moved the suppressed and stale flags to pflagsMaria Matejka
2021-10-13IGP metric getter refactoring to protocol callbackMaria Matejka
Direct protocol hooks for IGP metric inside nest/rt-table.c make the protocol API unnecessarily complex. Instead, we use a proper callback.
2021-02-10BGP: Add support for BGP hostname capabilityVincent Bernat
This is an implementation of draft-walton-bgp-hostname-capability-02. It is implemented since quite some time for FRR and in datacenter, this gives a nice output to avoid using IP addresses. It is disabled by default. The hostname is retrieved from uname(2) and can be overriden with "hostname" option. The domain name is never set nor displayed. Minor changes by committer.
2021-01-12MRT: Fix IPv6 table dumpsOndrej Zajicek (work)
Add fake MP_REACH_NLRI attribute with BGP next hop when encoding MRT table dumps for IPv6 routes. That is necessary to encode next hop as NEXT_HOP attribute is not used for MP-BGP. Thanks to Santiago Aggio for the bugreport.
2021-01-06BGP: Deprecate 'missing lladdr' optionOndrej Zajicek (work)
The option is not implemented since transition to 2.0 and no plan to add it. Also remove some deprecated RTS_* valus from documentation. Thanks to Sébastien Parisot for notification.
2020-11-12BFD: Better handling of BFD options in BGP configsOndrej Zajicek (work)
Merge multiple BFD option blocks in BGP configs instead of using the last one. That is necessary for proper handling of templates when BFD options are used both in a BGP template and in a BGP protocol derived from that template.
2020-11-08BFD: Allow per-request session optionsOndrej Zajicek (work)
BFD session options are configured per interface in BFD protocol. This patch allows to specify them also per-request in protocols requesting sessions (currently limited to BGP).
2020-05-01Nest: Added const to ea_show just to declare that this shouldn't really ↵Maria Matejka
change anything
2020-04-28Not calling memcpy with n=0.Maria Matejka
2020-04-09Configuration strings are constant.Maria Matejka
This is merely a const propagation. There was no problem in there.
2019-12-03BGP: Add some statisticsOndrej Zajicek (work)
Add some statistic counters to BGP consistent with BGP MIB (RFC 4273), including persistent 'FSM established transitions'.
2019-11-10BGP: Add option to enforce first AS in AS_PATHOndrej Zajicek (work)
This is optional check described in RFC 4271. Although this can be also done by filters, it is widely implemented option in BGP implementations. Thanks to Eugene Bogomazov for the original patch.
2019-11-04BGP: Add option to reject AS_SETsOndrej Zajicek (work)
There is a pending draft to make them obsolete
2019-10-09BGP: AIGP metric support (RFC 7311)Ondrej Zajicek (work)
2019-08-14BGP: implement Adj-RIB-OutOndrej Zajicek (work)
The patch implements optional internal export table to a channel and hooks it to BGP so it can be used as Adj-RIB-Out. When enabled, all exported (post-filtered) routes are stored there. An export table can be examined using e.g. 'show route export table bgp1.ipv4'.
2019-08-06BGP: Improve reconfigurationOndrej Zajicek (work)
Several BGP channel options (including 'next hop self') could be reconfigured without session reset, with just route refeed/refresh. The patch improves reconfiguration code to do it that way.
2019-07-03Merge branch 'master' into mq-filter-stackMaria Matejka
2019-06-30Nest: Add command to request graceful restartOndrej Zajicek (work)
When 'graceful down' command is entered, protocols are shut down with regard to graceful restart. Namely Kernel protocol does not remove routes and BGP protocol does not send notification, just closes the connection.
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