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path: root/bgpd/bgp_aspath.c
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2012-01-06general: remove inline qualifiers and move in-header functions to objectsPaul Jakma
* (general) Move functions in headers into files, to be compiled into shared object files. Remove inline qualifier from functions. Let the compiler do the work.
2011-03-21bgpd: Implement revised error handling for partial optional/trans. attributesPaul Jakma
* BGP error handling generally boils down to "reset session". This was fine when all BGP speakers pretty much understood all BGP messages. However the increasing deployment of new attribute types has shown this approach to cause problems, in particular where a new attribute type is "tunneled" over some speakers which do not understand it, and then arrives at a speaker which does but considers it malformed (e.g. corruption along the way, or because of early implementation bugs/interop issues). To mitigate this drafts before the IDR (likely to be adopted) propose to treat errors in partial (i.e. not understood by neighbour), optional transitive attributes, when received from eBGP peers, as withdrawing only the NLRIs in the affected UPDATE, rather than causing the entire session to be reset. See: http://tools.ietf.org/html/draft-scudder-idr-optional-transitive * bgp_aspath.c: (assegments_parse) Replace the "NULL means valid, 0-length OR an error" return value with an error code - instead taking pointer to result structure as arg. (aspath_parse) adjust to suit previous change, but here NULL really does mean error in the external interface. * bgp_attr.h (bgp_attr_parse) use an explictly typed and enumerated value to indicate return result. (bgp_attr_unintern_sub) cleans up just the members of an attr, but not the attr itself, for benefit of those who use a stack-local attr. * bgp_attr.c: (bgp_attr_unintern_sub) split out from bgp_attr_unintern (bgp_attr_unintern) as previous. (bgp_attr_malformed) helper function to centralise decisions on how to handle errors in attributes. (bgp_attr_{aspathlimit,origin,etc..}) Use bgp_attr_malformed. (bgp_attr_aspathlimit) Subcode for error specifc to this attr should be BGP_NOTIFY_UPDATE_OPT_ATTR_ERR. (bgp_attr_as4_path) be more rigorous about checks, ala bgp_attr_as_path. (bgp_attr_parse) Adjust to deal with the additional error level that bgp_attr_ parsers can raise, and also similarly return appropriate error back up to (bgp_update_receive). Try to avoid leaking as4_path. * bgp_packet.c: (bgp_update_receive) Adjust to deal with BGP_ATTR_PARSE_WITHDRAW error level from bgp_attr_parse, which should lead to a withdraw, by making the attribute parameter in call to (bgp_nlri_parse) conditional on the error, so the update case morphs also into a withdraw. Use bgp_attr_unintern_sub from above, instead of doing this itself. Fix error case returns which were not calling bgp_attr_unintern_sub and probably leaking memory. * tests/aspath_test.c: Fix to work for null return with bad segments
2011-03-21bgpd: Try fix extcommunity resource allocation probs, particularly with 'set ↵Paul Jakma
extcom..' * Extended communities has some kind of resource allocation problem which causes a double-free if the 'set extcommunity ...' command is used. Try fix by properly interning extcommunities. Also, more generally, make unintern functions take a double pointer so they can NULL out callers references - a usefully defensive programming pattern for functions which make refs invalid. Sadly, this patch doesn't fix the problem entirely - crashes still occur on session clear. * bgp_ecommunity.h: (ecommunity_{free,unintern}) take double pointer args. * bgp_community.h: (community_unintern) ditto * bgp_attr.h: (bgp_attr_intern) ditto * bgp_aspath.h: (bgp_aspath.h) ditto * (general) update all callers of above * bgp_routemap.c: (route_set_ecommunity_{rt,soo}) intern the new extcom added to the attr, and unintern any old one. (route_set_ecommunity_{rt,soo}_compile) intern the extcom to be used for the route-map set. (route_set_ecommunity_*_free) unintern to match, instead of free (route_set_ecommunity_soo) Do as _rt does and don't just leak any pre-existing community, add to it (is additive right though?)
2011-03-21bgpd: Rollback some of the changes made for invalid AS_PATH segment fixPaul Jakma
Some of the changes made in commit cddb8112b80fa9867156c637d63e6e79eeac67bb don't work particularly well for other changes that need to be made to address BGP attribute error handling problems. In particular, returning a pointer from complex attribute data parsing functions will not suffice to express the require range of return status conditions. * bgp_aspath.c: (assegments_parse) Rollback to a more minimal set of changes to fix the original problem. (aspath_parse) Slightly needless pushing around of code, and taking 2 parameters to say whether ot use 2 or 4 byte encoding seems unnecessary. * bgp_attr.c: (bgp_attr_as{,4}path) Rollback, in preparation for BGP attribute error handling update.
2010-08-09bgpd: fix handling of AS path dataChris Hall
* bgpd/bgp_aspath.c * assegments_parse(): add handling of AS4_PATH input, update bounds checks, add check for AS segment type * aspath_parse(): add handling of AS4_PATH input, expect assegments_parse() to do length checking * aspath_empty(): update for the new function prototype * bgpd/bgp_aspath.h: ditto * tests/aspath_test.c: ditto * bgpd/bgp_attr.c * bgp_attr_aspath(): add handling of AS4_PATH input, update flags checks, change returned type * bgp_attr_as4_path(): discard, superseded by bgp_attr_aspath() * bgp_attr_parse(): update respectively
2009-12-17bgpd: code cleanupStephen Hemminger
* bgpd/bgp_aspath.c * ashash: only used in one file, make static * aspath_count_numas(): dead code, sayonara * bgpd/bgpd.c * peer_nsf_stop(): only used in one file, make static * bgpd/bgp_packet.h * bgp_capability_receive(): add missing prototype for a global function
2009-12-04bgpd: work around warning in assegments_parse()Denis Ovsienko
2009-07-28bgpd: Delete AS_CONFED_SEQUENCE when prepending an AS_SEQUENCE type segmentVasilis Tsiligiannis
AS_CONFED_SEQUENCE segment should always be deleted when prepending (e.g. with a route-map) an AS_SEQUENCE segment to an AS path. Otherwise, AS_CONFED_SEQUENCE will not be deleted later when updating EBGP peers (since it is not the leftmost segment) and will leak outside the confederation.
2009-07-28bgpd: Implement BGP confederation error handling (RFC5065, Par. 5)Vasilis Tsiligiannis
This patch implements BGP confederation error handling in Quagga as described in RFC5065, paragraph 5. * bgp_aspath.c: (aspath_confed_check, aspath_left_confed_check) new functions * bgp_attr.c: (bgp_attr_aspath_check) apply previous and NOTIFY if there's a problem.
2009-07-19[bgpd] Stability fixes including bugs 397, 492Chris Caputo
I've spent the last several weeks working on stability fixes to bgpd. These patches fix all of the numerous crashes, assertion failures, memory leaks and memory stomping I could find. Valgrind was used extensively. Added new function bgp_exit() to help catch problems. If "debug bgp" is configured and bgpd exits with status of 0, statistics on remaining lib/memory.c allocations are printed to stderr. It is my hope that other developers will use this to stay on top of memory issues. Example questionable exit: bgpd: memstats: Current memory utilization in module LIB: bgpd: memstats: Link List : 6 bgpd: memstats: Link Node : 5 bgpd: memstats: Hash : 8 bgpd: memstats: Hash Bucket : 2 bgpd: memstats: Hash Index : 8 bgpd: memstats: Work queue : 3 bgpd: memstats: Work queue item : 2 bgpd: memstats: Work queue name string : 3 bgpd: memstats: Current memory utilization in module BGP: bgpd: memstats: BGP instance : 1 bgpd: memstats: BGP peer : 1 bgpd: memstats: BGP peer hostname : 1 bgpd: memstats: BGP attribute : 1 bgpd: memstats: BGP extra attributes : 1 bgpd: memstats: BGP aspath : 1 bgpd: memstats: BGP aspath str : 1 bgpd: memstats: BGP table : 24 bgpd: memstats: BGP node : 1 bgpd: memstats: BGP route : 1 bgpd: memstats: BGP synchronise : 8 bgpd: memstats: BGP Process queue : 1 bgpd: memstats: BGP node clear queue : 1 bgpd: memstats: NOTE: If configuration exists, utilization may be expected. Example clean exit: bgpd: memstats: No remaining tracked memory utilization. This patch fixes bug #397: "Invalid free in bgp_announce_check()". This patch fixes bug #492: "SIGBUS in bgpd/bgp_route.c: bgp_clear_route_node()". My apologies for not separating out these changes into individual patches. The complexity of doing so boggled what is left of my brain. I hope this is all still useful to the community. This code has been production tested, in non-route-server-client mode, on a linux 32-bit box and a 64-bit box. Release/reset functions, used by bgp_exit(), added to: bgpd/bgp_attr.c,h bgpd/bgp_community.c,h bgpd/bgp_dump.c,h bgpd/bgp_ecommunity.c,h bgpd/bgp_filter.c,h bgpd/bgp_nexthop.c,h bgpd/bgp_route.c,h lib/routemap.c,h File by file analysis: * bgpd/bgp_aspath.c: Prevent re-use of ashash after it is released. * bgpd/bgp_attr.c: #if removed uncalled cluster_dup(). * bgpd/bgp_clist.c,h: Allow community_list_terminate() to be called from bgp_exit(). * bgpd/bgp_filter.c: Fix aslist->name use without allocation check, and also fix memory leak. * bgpd/bgp_main.c: Created bgp_exit() exit routine. This function frees allocations made as part of bgpd initialization and, to some extent, configuration. If "debug bgp" is configured, memory stats are printed as described above. * bgpd/bgp_nexthop.c: zclient_new() already allocates stream for ibuf/obuf, so bgp_scan_init() shouldn't do it too. Also, made it so zlookup is global so bgp_exit() can use it. * bgpd/bgp_packet.c: bgp_capability_msg_parse() call to bgp_clear_route() adjusted to use new BGP_CLEAR_ROUTE_NORMAL flag. * bgpd/bgp_route.h: Correct reference counter "lock" to be signed. bgp_clear_route() now accepts a bgp_clear_route_type of either BGP_CLEAR_ROUTE_NORMAL or BGP_CLEAR_ROUTE_MY_RSCLIENT. * bgpd/bgp_route.c: - bgp_process_rsclient(): attr was being zero'ed and then bgp_attr_extra_free() was being called with it, even though it was never filled with valid data. - bgp_process_rsclient(): Make sure rsclient->group is not NULL before use. - bgp_processq_del(): Add call to bgp_table_unlock(). - bgp_process(): Add call to bgp_table_lock(). - bgp_update_rsclient(): memset clearing of new_attr not needed since declarationw with "= { 0 }" does it. memset was already commented out. - bgp_update_rsclient(): Fix screwed up misleading indentation. - bgp_withdraw_rsclient(): Fix screwed up misleading indentation. - bgp_clear_route_node(): Support BGP_CLEAR_ROUTE_MY_RSCLIENT. - bgp_clear_node_queue_del(): Add call to bgp_table_unlock() and also free struct bgp_clear_node_queue used for work item. - bgp_clear_node_complete(): Do peer_unlock() after BGP_EVENT_ADD() in case peer is released by peer_unlock() call. - bgp_clear_route_table(): Support BGP_CLEAR_ROUTE_MY_RSCLIENT. Use struct bgp_clear_node_queue to supply data to worker. Add call to bgp_table_lock(). - bgp_clear_route(): Add support for BGP_CLEAR_ROUTE_NORMAL or BGP_CLEAR_ROUTE_MY_RSCLIENT. - bgp_clear_route_all(): Use BGP_CLEAR_ROUTE_NORMAL. Bug 397 fixes: - bgp_default_originate() - bgp_announce_table() * bgpd/bgp_table.h: - struct bgp_table: Added reference count. Changed type of owner to be "struct peer *" rather than "void *". - struct bgp_node: Correct reference counter "lock" to be signed. * bgpd/bgp_table.c: - Added bgp_table reference counting. - bgp_table_free(): Fixed cleanup code. Call peer_unlock() on owner if set. - bgp_unlock_node(): Added assertion. - bgp_node_get(): Added call to bgp_lock_node() to code path that it was missing from. * bgpd/bgp_vty.c: - peer_rsclient_set_vty(): Call peer_lock() as part of peer assignment to owner. Handle failure gracefully. - peer_rsclient_unset_vty(): Add call to bgp_clear_route() with BGP_CLEAR_ROUTE_MY_RSCLIENT purpose. * bgpd/bgp_zebra.c: Made it so zclient is global so bgp_exit() can use it. * bgpd/bgpd.c: - peer_lock(): Allow to be called when status is "Deleted". - peer_deactivate(): Supply BGP_CLEAR_ROUTE_NORMAL purpose to bgp_clear_route() call. - peer_delete(): Common variable listnode pn. Fix bug in which rsclient was only dealt with if not part of a peer group. Call bgp_clear_route() for rsclient, if appropriate, and do so with BGP_CLEAR_ROUTE_MY_RSCLIENT purpose. - peer_group_get(): Use XSTRDUP() instead of strdup() for conf->host. - peer_group_bind(): Call bgp_clear_route() for rsclient, and do so with BGP_CLEAR_ROUTE_MY_RSCLIENT purpose. - bgp_create(): Use XSTRDUP() instead of strdup() for peer_self->host. - bgp_delete(): Delete peers before groups, rather than after. And then rather than deleting rsclients, verify that there are none at this point. - bgp_unlock(): Add assertion. - bgp_free(): Call bgp_table_finish() rather than doing XFREE() itself. * lib/command.c,h: Compiler warning fixes. Add cmd_terminate(). Fixed massive leak in install_element() in which cmd_make_descvec() was being called more than once for the same cmd->strvec/string/doc. * lib/log.c: Make closezlog() check fp before calling fclose(). * lib/memory.c: Catch when alloc count goes negative by using signed counts. Correct #endif comment. Add log_memstats_stderr(). * lib/memory.h: Add log_memstats_stderr(). * lib/thread.c: thread->funcname was being accessed in thread_call() after it had been freed. Rearranged things so that thread_call() frees funcname. Also made it so thread_master_free() cleans up cpu_record. * lib/vty.c,h: Use global command_cr. Add vty_terminate(). * lib/zclient.c,h: Re-enable zclient_free().
2009-06-23[bgpd] review 32-bit AS-path hotfix for 0.99.12Denis Ovsienko
The patch by Chris Caputo, which was used to prepare 0.99.12 release, consists of three parts: 1. memory allocation fix itself 2. fix for warnings about constant variables 3. fix for printf format specs (%d was used instead of %u) It was confirmed later, that: a. a much simpler bugfix was available for memory allocation b. committed version of the bugfix wasn't optimal CPU-wise At this point I consider reasonable to revert the allocation portion of that patch and to replace it with the shorter version, which is: -#define ASN_STR_LEN (5 + 1) +#define ASN_STR_LEN (10 + 1) Other two parts of Mr. Caputo's patch remain intact.
2009-06-12[cleanup] Convert XMALLOC/memset to XCALLOCStephen Hemminger
Simple conversion of XMALLOC/memset to XCALLOC
2009-06-09[bgpd] Fixed as-path prepend/exclude ASN handlingDenis Ovsienko
- aspath_gettoken(): use as_t to fix 4-byte ASN scanning (bug #484) - set_aspath_prepend_cmd(): use CMD_AS_RANGE in message to match actual range - no_set_aspath_prepend_val_cmd(): idem - set_aspath_exclude_cmd(): idem - no_set_aspath_exclude_val_cmd(): idem
2009-04-30[bgpd] AS4 bugfix by Chris Caputo <ccaputo@alt.net>Denis Ovsienko
* bgpd/bgp_aspath.c: (aspath_make_str_count) "assert (len < str_size)" was getting hit under certain 4-byte ASN conditions. New realloc strategy. * bgpd/bgp_aspath.c: (aspath_key_make) const warning fix. "%d" -> "%u" 4-byte ASN corrections. Prevent negative number when ASN is above 2^31.
2008-08-22[lib] hash compare function arguments ought to be const qualifiedStephen Hemminger
2008-08-14 Stephen Hemminger <stephen.hemminger@vyatta.com> * lib/hash.h: (struct hash) Hash comparator callback really ought to treat storage behind arguments as constant - a compare function with side-effects would be evil. * */*.c: Adjust comparator functions similarly, thus fixing at least a few compiler warnings about const qualifier being dropped. Signed-off-by: Paul Jakma <paul@quagga.net>
2008-04-10+ [bgpd] Added new route-map set statement: "as-path ignore"Denis Ovsienko
2007-10-14[bgpd] Merge AS4 supportPaul Jakma
2007-10-14 Paul Jakma <paul.jakma@sun.com> * NEWS: Note that MRT dumps are now version 2 * (general) Merge in Juergen Kammer's AS4 patch. 2007-09-27 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (assegment_normalise) remove duplicates from from sets. (aspath_reconcile_as4) disregard a broken part of the RFC around error handling in path reconciliation. * aspath_test.c: Test dupe-weeding from sets. Test that reconciliation merges AS_PATH and AS4_PATH where former is shorter than latter. 2007-09-26 Paul Jakma <paul.jakma@sun.com> * aspath_test.c: Test AS4_PATH reconcilation where length of AS_PATH and AS4_PATH is same. 2007-09-25 Paul Jakma <paul.jakma@sun.com> * bgp_open.c: (peek_for_as4_capability) Fix to work. * bgp_packet.c: (bgp_open_receive) Fix sanity check of as4. * tests/bgp_capability_test.c: (general) Extend tests to validate peek_for_as4_capability. Add test of full OPEN Option block, with multiple capabilities, both as a series of Option, and a single option. Add some crap to beginning of stream, to prevent code depending on getp == 0. 2007-09-18 Paul Jakma <paul.jakma@sun.com> * bgp_open.c: (bgp_capability_as4) debug printf inline with others. (peek_for_as4_capability) There's no need to signal failure, as failure is better dealt with through full capability parser - just return the AS4, simpler. * bgp_packet.c: (bgp_open_receive) Update to match peek_for_as4_capability change. Allow use of BGP_AS_TRANS by 2b speakers. Use NOTIFY_OPEN_ERR rather than CEASE for OPEN parsing errors. (bgp_capability_msg_parse) missing argument to debug print (bgp_capability_receive) missing return values. * tests/bgp_capability_test.c: (parse_test) update for changes to peek_for_as4_capability 2007-07-25 Paul Jakma <paul.jakma@sun.com> * Remove 2-byte size macros, just make existing macros take argument to indicate which size to use. Adjust all users - typically they want '1'. * bgp_aspath.c: (aspath_has_as4) New, return 1 if there are any as4's in a path. (aspath_put) Return the number of bytes actually written, to fix the bug Juergen noted: Splitting of segments will change the number of bytes written from that already written to the AS_PATH header. (aspath_snmp_pathseg) Pass 2-byte flag to aspath_put. SNMP is still defined as 2b. (aspath_aggregate) fix latent bug. (aspath_reconcile_as4) AS_PATH+NEW_AS_PATH reconciliation function. (aspath_key_make) Hash the AS_PATH string, rather than just taking the addition of assegment ASes as the hash value, hopefully sligthly more collision resistant. (bgp_attr_munge_as4_attrs) Collide the NEW_ attributes together with the OLD 2-byte forms, code Juergen had in bgp_attr_parse but re-organised a bit. (bgp_attr_parse) Bunch of code from Juergen moves to previous function. (bgp_packet_attribute) Compact significantly by just /always/ using extended-length attr header. Fix bug Juergen noted, by using aspath_put's (new) returned size value for the attr header rather than the (guesstimate) of aspath_size() - the two could differ when aspath_put had to split large segments, unlikely this bug was ever hit in the 'wild'. (bgp_dump_routes_attr) Always use extended-len and use aspath_put return for header length. Output 4b ASN for AS_PATH and AGGREGATOR. * bgp_ecommunity.c: (ecommunity_{hash_make,cmp}) fix hash callback declarations to match prototypes. (ecommunity_gettoken) Updated for ECOMMUNITY_ENCODE_AS4, complete rewrite of Juergen's changes (no asdot support) * bgp_open.c: (bgp_capability_as4) New, does what it says on the tin. (peek_for_as4_capability) Rewritten to use streams and bgp_capability_as4. * bgp_packet.c: (bgp_open_send) minor edit checked (in the abstract at least) with Juergen. Changes are to be more accepting, e.g, allow AS_TRANS on a 2-byte session. * (general) Update all commands to use CMD_AS_RANGE. * bgp_vty.c: (bgp_clear) Fix return vals to use CMD_.. Remove stuff replicated by VTY_GET_LONG (bgp_clear_vty) Return bgp_clear directly to vty. * tests/aspath_test.c: Exercise 32bit parsing. Test reconcile function. * tests/ecommunity_test.c: New, test AS4 ecommunity changes, positive test only at this time, error cases not tested yet. 2007-07-25 Juergen Kammer <j.kammer@eurodata.de> * (general) AS4 support. * bgpd.h: as_t changes to 4-bytes. * bgp_aspath.h: Add BGP_AS4_MAX and BGP_AS_TRANS defines. * bgp_aspath.c: AS_VALUE_SIZE becomes 4-byte, AS16_VALUE_SIZE added for 2-byte. Add AS16 versions of length calc macros. (aspath_count_numas) New, count number of ASes. (aspath_has_as4) New, return 1 if there are any as4's in a path. (assegments_parse) Interpret assegment as 4 or 2 byte, according to how the caller instructs us, with a new argument. (aspath_parse) Add use32bit argument to pass to assegments_parse. Adjust all its callers to pass 1, unless otherwise noted. (assegment_data_put) Adjust to be able to write 2 or 4 byte AS, according to new use32bit argument. (aspath_put) Adjust to write 2 or 4. (aspath_gettoken) Use a long for passed in asno. * bgp_attr.c: (attr_str) Add BGP_ATTR_AS4_PATH and BGP_ATTR_AS4_AGGREGATOR. (bgp_attr_aspath) Call aspath_parse with right 2/4 arg, as determined by received-capability flag. (bgp_attr_aspath_check) New, code previously in attr_aspath but moved to new func so it can be run after NEW_AS_PATH reconciliation. (bgp_attr_as4_path) New, handle NEW_AS_PATH. (bgp_attr_aggregator) Adjust to cope with 2/4 byte ASes. (bgp_attr_as4_aggregator) New, read NEW_AGGREGATOR. (bgp_attr_parse) Add handoffs to previous parsers for the two new AS4 NEW_ attributes. Various checks added for NEW/OLD reconciliation. (bgp_packet_attribute) Support 2/4 for AS_PATH and AGGREGATOR, detect when NEW_ attrs need to be sent. * bgp_debug.{c,h}: Add 'debug bgp as4'. * bgp_dump.c: MRTv2 support, unconditionally enabled, which supports AS4. Based on patches from Erik (RIPE?). * bgp_ecommunity.c: (ecommunity_ecom2str) ECOMMUNITY_ENCODE_AS4 support. * bgp_open.c: (peek_for_as4_capability) New, peek for AS4 capability prior to full capability parsing, so we know which ASN to use for struct peer lookup. (bgp_open_capability) Always send AS4 capability. * bgp_packet.c: (bgp_open_send) AS4 handling for AS field (bgp_open_receive) Peek for AS4 capability first, and figure out which AS to believe. * bgp_vty.c: (bgp_show_peer) Print AS4 cap * tests/aspath_test.c: Support asn32 changes, call aspath_parse with 16 bit. * vtysh/extract.pl: AS4 compatibility for router bgp ASNUMBER * vtysh/extract.pl.in: AS4 compatibility for router bgp ASNUMBER * vtysh/vtysh.c: AS4 compatibility for router bgp ASNUMBER
2007-04-29[bgpd] Fix warnings: hash callbacks should match hash API declarationsPaul Jakma
2007-04-22 Sebastien Tandel <sebastien@tandel.be> * bgp_advertise.c : (baa_hash_alloc, baa_hash_key, baa_hash_cmp) conforms to quagga hash API. Defines _hash_[alloc|key|cmp] with void * arguments as defined by the API. * bgp_aspath.c,h : (aspath_key_make) conforms to quagga hash API. Defines _hash_[alloc|key|cmp] with void * arguments as defined by the API. * bgp_attr.c,h : (cluster_hash_alloc, cluster_hash_key_make, cluster_hash_cmp, transit_hash_alloc, transit_hash_key_make, transit_hash_cmp, attrhash_key_make, attrhash_cmp, bgp_attr_hash_alloc) conforms to quagga hash API. Defines _hash_[alloc|key|cmp] with void * arguments as defined by the API.
2007-04-15[bgpd] Minor performance improvement patchAndrew J. Schorr
2007-04-15 Sebastien Tandel <sebastien@tandel.be> * bgp_aspath.c: (aspath_as_add, aspath_segment_add) Minor performance optimization: while loop should test one pointer instead of two.
2006-09-14[bgpd] Add RIB reporting commands, show bgp ... statisticsPaul Jakma
2006-09-13 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (aspath_highest) new, return highest ASN in an aspath. * bgp_route.c: (bgp_peer_count_walker) new, do the walk done in bgp_peer_counts as a thread. (bgp_peer_counts) move walk to previous and call it via thread_execute so this RIB walk shows up in thread stats. (bgp_table_stats) New, gather some statistics for a given RIB. (bgp_table_stats_walker) New, RIB walker thread for former. (bgp_table_stats_vty) Parsing front-end for 'show bgp ...', useful model for future rationalisation of 'show ... bgp'. (bgp_route_init) Add new RIB stats commands.
2006-08-06[bgpd] aspath_loop_check was broken, fix it and the aspath unit test code.Paul Jakma
2006-08-06 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (aspath_loop_check) Fix the typo-bug which essentially had disabled this check. Problem reported by Bartek Kania <mrbk@gnarf.org> in [quagga-users 7388]. * aspath_test.c: (validate) Fix the sense of the aspath_loop_check, which was the wrong way around and had actually been testing for aspath_loop_check to be buggy.
2006-05-12[bgpd] CID #4,#5,#9,#10, simplify aspath_print_vty usagePaul Jakma
2006-05-12 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.{c,h}: (aspath_print_vty) take a format string, so as to reduce burden on callers, all in bgp_route.c * bgp_route.c: (route_vty_out{,tmp}) Update to match aspath_print_vty, simplifying checks needed to get spacing right. CID #4,#5. ({damp,flap}_route_vty_out) Ditto, CID #9, #10
2006-02-05[bgpd] trivial fix for gcc warningpaul
2006-02-05 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (aspath_gettoken) fix gcc warning about possible uninitialised usage.
2006-01-19[compiler] miscellaneous trivial compiler warning fixespaul
2006-01-19 Paul Jakma <paul.jakma@sun.com> * (general) various miscellaneous compiler warning fixes. Remove redundant break statements from switch clauses which return. return from main, not exit, cause it annoys SOS. Remove stray semi-colons which cause empty-statement warnings. * zebra/main.c: (sighup) remove private declaration of external function.
2006-01-16[bgpd] add aspath_finish, static resource cleanup function.paul
2006-01-16 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (aspath_snmp_pathseg) move the static stream pointer out to file scope, so it can be freed. (aspath_finish) new function, free aspath resources. * bgp_aspath.h: (aspath_finish) export.
2006-01-16[bgpd] fix some leaks introduced in aspath rewrite.paul
2006-01-16 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (assegment_append_asns) XREALLOC can return NULL theoretically, take care not to lose the allocated data. (aspath_hash_alloc) aspath_dup already set the aspath string - fix leak. (aspath_parse) aspath_hash_alloc dupes the entire aspath, including segments, but we forgot to free the temporary assegment.
2005-11-23[bgp] Fix SEGV if empty path is confed-compared ([quagga-users 5968])paul
2005-11-23 Paul Jakma <paul.jakma@sun.com> * bgp_aspath.c: (assegments_parse) should be static 2005-11-23 Juergen Kammer <j.kammer@eurodata.de> * bgp_aspath.c: (aspath_cmp_left_confed) fix SEGV for case where one or both paths are empty.
2005-09-102005-09-10 Paul Jakma <paul.jakma@sun.com>paul
* Makefile.am: bgpd shouldn't list libgp's sources as its own. Use LDADD. * bgp_aspath.h: (struct assegment) New struct, abstract representation of a list of AS_PATH segments and the contained ASNs. (struct aspath) Remove the raw-data related fields, reference the abstract struct assegment instead. Remove several other computed fields, it's just a headache to maintain them and they're cheap to compute from struct assegment. (aspath_parse) parse a stream, not a pointer to raw data. (aspath_count_{hops,confeds,size}) helpers to access information formerly directly contained in struct aspath. (aspath_snmp_pathseg) Helper for SNMP, BGP MIB wants to be able to output hex representation of raw data. * bgp_aspath.c: (general) partial-rewrite. Store aspath data as an abstract singly-linked list of abstract segments, rather than storing the raw data, and parsing it each and every time. Remove several count/size fields which are cheap to compute from the abstract segment structure. (global) Include stream.h, needed for aspath_parse, and others. Couple of helper macros added. (struct assegment_header) Just the header, and only the header. (assegment_data_{new,free}) convenience functions for AS_SEG_DATA allocation, the dynamic, per-segment array of ASNs. (assegment_{new,free,free_all,dup,dup_all}) convenience functions for creating struct assegments. The _all forms will follow the entire chain of segments from the given segment. (assegment_prepend_asns) new function, prepend an ASN N times to segment. (assegment_append_asns) Append a list (array) of ASNs to segment. (int_cmp) convenience function for the aspath hash. (assegment_normalise) new function. Normalise the given segment chain to meet expectations of Quagga, and to eliminate differing raw representations of the same paths. Merge 'runs' of SEQUENCEs into one segment as our internal segment is not limited by the protocol AS_PATH segment length. Sort ASNs in SETs. (aspath_new) Take void argument to quell warnings. Use the assegment convenience functions. (assegment_count_{asns,confeds,hops}) new functions to compute at runtime values previously held in struct aspath. (aspath_size) ditto. (aspath_make_str_count) rewritten to stringify new representation, and to be slightly easier to understand hopefully. (aspath_str_update) convenience function, update the aspath str. Should investigate removing maintained string from struct aspath, just run-time compute it, as per other fields. It's just a maintenance headache, would save noticeable amount of RAM with possibly not much extra run-time cost. (aspath_dup) use the assegment dup functions. (aspath_hash_alloc) Take void * argument to satisfy gcc. Use the proper helper functions to dup data. (assegments_parse) new function. parse raw AS_PATH data into struct assegments. Normalise and return the head of the list. (aspath_parse) Parse a stream, not pointer to raw data and use assegments_parse to do it. (assegment_data_put) Write out a single segment data in protocol form to stream. (assegment_header_put) ditto but for segment header. (aspath_put) new function. As per previous but for an entire struct aspath. (aspath_snmp_pathseg) wrapper around aspath_put for bgp_snmp.c. Uses a static buffer sadly. (aspath_aggregate_as_set_add) rewritten to use assegments. (aspath_aggregate) ditto (aspath_{firstas,loop,private_as}_check) ditto (aspath_{merge,prepend,add_one_as}) ditto (aspath_cmp_left{_confed}) ditto (aspath_delete_confed_seq) ditto, plus fixed to properly delete all leading confed segments. (aspath_as_add) Just use assegment_append_asns. (aspath_segment_add) updated to use assegments. (enum as_token) Add values for confeds (aspath_gettoken) Add support for confeds (aspath_str2aspath) ditto (aspath_key_make) updated to use as_segments. Also, add segment type into the hash value as appropriate. (aspath_cmp) updated to use as_segments. (aspath_print) don't segfault on NULL argument. * bgp_attr.c: (bgp_attr_aspath) aspath_parse wants the stream now. No need for manual forwarding of stream. (bgp_packet_attribute) empty aspath is now denoted by NULL segment field, length is gone. Use aspath_size() to determine size. (bgp_attr_init) Fix declaration, explicitely specify void arg. (bgp_dump_routes_attr) Use aspath_size() to determine size. * bgp_route.c: (bgp_info_cmp) use the aspath_count_* functions. (bgp_rib_withdraw) remove unused variable. Use aspath_count_hops. * bgp_snmp.c: (bgp4PathAttrTable) raw data is gone, use aspath_snmp_pathseg to get the representation.
2005-06-282005-06-28 Paul Jakma <paul.jakma@sun.com>paul
* (global) The great bgpd extern and static'ification. * bgp_routemap.c: remove unused ROUTE_MATCH_ASPATH_OLD code (route_set_metric_compile) fix u_int32_t to ULONG_MAX comparison warnings. * bgp_route.h: (bgp_process, bgp_withdraw, bgp_update) export these used by various files which had their own private declarations, in the case of mplsvpn - incorrect.
2005-04-08 * bgpd.texi: Document new "bgp bestpath as-path confed" command.hasso
* bgp_aspath.[ch], bgp_route.c, bgp_vty.c, bgpd.[ch]: Allow to enable the length of confederation path segments to be included during the as-path length check in the best path decision.
2004-10-132004-10-13 Paul Jakma <paul@dishone.st>paul
* (global) more const'ification and fixups of types to clean up code. * bgp_mplsvpn.{c,h}: (str2tag) fix abuse. Still not perfect, should use something like the VTY_GET_INTEGER macro, but without the vty_out bits.. * bgp_routemap.c: (set_aggregator_as) use VTY_GET_INTEGER_RANGE (no_set_aggregator_as) ditto. * bgpd.c: (peer_uptime) fix unlikely bug, where no buffer is returned, add comments about troublesome return value.
2004-09-26Compiler warnings fixes.hasso
2002-12-13change log message fron signed to unsigned decimalpaul
2002-12-13Initial revisionpaul