Revision history for C and Perl extension of nfdump.

1.28 2020-04-10
	- updated to nfdump 1.6.20
	- code cleanup 

1.27 2020-04-07
	- after a few years stalled development the library is going to be 
	  maintained and sponsored by NetX Networks a.s. 
	- source code moved from original 
	- updated README 
	- un-submoduled ffilter code to avoid nigtmare with git submodules 
	- backported patch
	- updated to nfdump 1.6.18
	- removed support for legacy nadump V0 format 
	- some test files in perl/t/ dir converted from V0 format 

1.26 2018-06-xx - never released
	- updated to nfdump 1.6.17
	- c: better processing of list of exporters 
	- c: ringbuf support to handle data beween libnf instancec in real time 
	- c: new functions lnf_ring_init, lnf_ring_info, lnf_ring_read,
	  lnf_ring_write, lnf_ring_free
	- c: new examples examples/lnf_ex13_ring_write.c, examples/lnf_ex14_ring_read.c
	- nfdumpp: new shm (ringbuf) output format (-o shm) 
	- nfdumpp: new --loop-read option for continuos reading of input file(s)
	- nfdumpp: new --shm-read option for read data from shm (ringbuf)
	- perl: perl module is not separate code but part of libnf repository 

1.25 2016-12-04
	- libnf and modules moved to separate repositories (libnf, libnf-ffilter, libnf-perl)
	  command git submodule update --remote --merge must be used to update to latest 
	  submodule reference
	-c: some leaks in memheap removed
	-c: versioning of added (issue #5, thanks to Tomas Cejka)
	-c: added new API function lnf_mem_clean(lnf_mem_t *lnf_mem)
	-c: added exmaple lnf_ex11_memclean.c
	-c: new function lnf_rec_get_raw/lnf_rec_set_raw
	-c: new example examples/lnf_ex12_rec_raw.c 
	-c: new function lnf_filter_ffilter_ptr
	-c: fix of RPM build (issue #5, thanks to Tomas Cejka)
	-perl: added new test 53-libnf-filter.t
	-nfdumpp: handles properly error messages for libnf filter
	-nfdumpp: ability ro read binnary format from stdin (nfdumpp -r -)

1.24 2016-06-21
	-perl: better thread testing (with more detailed results)

1.23 2016-06-20
	-c: fixed build on FreeBSD

1.22 2016-06-18
	-c: adjusted to nfdump-1.6.15

1.21 2016-05-28
	-nffdump: invalid mutex initialisation 

1.20 2016-05-09
	-removed several warnings 
	-c: new field LNF_FLD_INET_FAMILY containing either AF_INET or AF_INET6
	-perl: new field inetfamily 
	-perl: new function family2txt and txt2family 
	-nfdumpp: removed bug where nfdumpp produces corupted output file 
	-nfdumpp: added -n option to limit aggregated outputs 

1.19 2016-02-03
	-perl: removed dependency on lbz 

1.18 2016-01-29
	-perl: new variables $flow->{NUM_OF_FIELDS} and $flow->{NAME} can be accesed 
	       Zangerl, Report #110170)
	-c: adjusted to nfdump-1.6.14
	-c: two new lnf_open flags LNF_COMP_LZO and LNF_COMP_BZ2
	-c: new ./configure option to build with static or dynam BZ2 support
	-c: separation of new filter code. The new filter can also be used in 
		other projects (include/ffliter.h and src/ffiltler,
		thank to Lukas Hutak for cooperation). 
	-c: removed memory leak in lnf_lookup_map and lnf_close (tnaks for Lukas
	-c: fixed size of some fields (patch submitted by Lukas Hutak)
	-c: API change - tha value of LNF_AGGR_KEY is 0x0008
	-c: API change - new LNF_AGGR_AUTO for autodetection of aggregation mode
	-nfdumpp: new -w and -o options 
	-nfdumpp: new modular output system 
	-nfdumpp: invalid dispaly of duration field 
	-nfdumpp: multiple outputs when multiple -A switch is used 
	           nfdumpp -R DIR -A proto -O bytes -A srcvlan -O bps
	           nfdumpp -R DIR -A ip -O pkts -A port -O bytes -A proto 
	           nfdumpp -R DIR -A ip/16 -O bytes -A ip/24 
1.17 2015-10-27
	-perl: added test t/09-instances.t
	-perl: test for calculated items in test t/08-aggreg-sort.t
	-perl: new option CompatMode
	-c: time fields can be user as aggregation key with alligned time
	-c: new lnf_mem option LNF_OPT_COMP_STATSCMP 
	-c: sort support for calculated fields
	-c: removed bug when thread key was nor released after lnf_mem release
	-c: LNF_CALC_*PS items returns LNF_ERR_NAN when division by 0 is detected 
	-c: new flag LNF_APPEND in lnf_open for open file in append mode (not supported by nfdump format)
	-c: LNF_FLD_INFO_SIZE can be returned by lnf_fld_info
	-c: added LNF_<type>_T with basic types definitions used by libnf 
	-c: removed bug when memheap crashes after mixing pair and non pair 
	    fields (Thanks to Jan Wrona)
	-c: new fields LNF_FLD_INGRESS_ACL and LNF_FLD_EGRESS_ACL representing 
	    all fields *_ACL_ID, *_ACE_ID, *_XACE_ID in one structure lnf_acl_t
	-nfdumpp: redesigned command options 

1.16 2015-09-07
	-c: added license and copyright information 
	-c: added field event (thanks to Artem Buglak)
	-perl: module allows to sort records without aggregation (list mode)
	-c: bug when sorting same values (Thanks to Jan Wrona) 
	-c: libnf-info is compiled statically now (Thanks to Lukas Hutak)

1.15 2015-07-26
	- c: new function lnf_mem_setopt for configuring some lnf_mem options 
	- c: lnf_mem_t can be switched into list mode via 
	     lnf_mem_setopt(LNF_OPT_LISTMODE, ...); In this mode there is no 
		 aggregation of items; mode can be used for sorting records 
	- c: improved merge_threads (removed deadlock)
	- c: new function lnf_mem_lookup_c and lnf_mem_lookup_raw_c
	- c: new example examples/lnf_ex09_memlookup.c 
	- c: new example examples/lnf_ex10_listmode.c
	- c: new option -l in examples/lnf_ex04_threads.c
	- nfdumpp: sorting without aggregation 
	- c: removed binary and .o objects from original nfdump 
	     sources in distribution package (Bug #105944)

1.14 2015-07-18
	- c: new way to work with data in lnf_mem, new functions 
	  lnf_mem_first_c, lnf_mem_next_c, lnf_mem_read_c,
	- c: functions lnf_mem_read, lnf_mem_read_raw,
	  lnf_mem_read_reset marked as deprecated
	- c: examples redesigned to use new lnf_mem functions 
	- c: libnf.h was not installed by default (thanks to Tomas Cejka)
	- c: removed memory release bug in merge_threads
	- perl: added new test 52-libnf-examples.t to test examples 
	- perl: t/08-aggreg-sort.t was missing in distribution package 
	- perl: Socket6 module is not required starting with perl 5.14.0
	- perl: buggy implementation of inet_pton in Ubuntu 

1.13 2015-07-08
	- perl: module requires use of threads 
	- perl: tests that depends on threads are executed only on 
	  systems where thread support is enabled

1.12 2015-07-05
	- c: removed __thread directive from source codes 
	- c: redesign of thread patch support nfdump-thread.patch and
	  nfdump-leak.patch patch merged into one file

1.11 2015-07-04
	- nfdumpp: added basic comparison test for threads
	- perl: removed some issues with thread support in perl 

1.10 2015-06-30
	- Project entered into close cooperation with 
	  CESNET - Czech National Research Network
	- c: thread support enabled by default (--enable-threads)
	- c: aggregation unit supports statistics 
	- c: new pair fields LNF_FLD_PAIR_PORT|ADDR|AS|IF|VLAN
	- c: examples/lnf_ex08_statistics added 
	- perl: Net::NfDump->info returns proper data 
	- perl: invalid handling of LNF_UINT16 (Bug #105472)
	- perl: nfasnupd do not require Geo::IP module

1.09 2015-05-28
	- perl: removed memory leak (Bug #104294)
	- perl: improved test 

1.08 2015-05-27
	- c: doc update 
	- c: EXPERIMENTAL very early stage of new filter code independent of the 
	     original nfdump filter code. New function lnf_filter_init_v1 or 
	     lnf_filter_init_v2 is used to initialize either old (nfdump) or 
	     new (libnf) filter. By default lnf_filter_init calls the old 
	     one filter. 
	- c: new error code LNF_ERR_OTHER_MSG for errors where lnf_error buffer is set 
	- c: _LIBNF_H macro added in the libnf.h file 
	- c: new function lnf_mem_read_reset - set cursor to first record 
	- c: nfdumpp uses by default only 70% of available threads 
	- c: nfdumpp checks -O option 
	- c: removed bug - libnf fails after attempt to read empty lnf_mem 
	- c: removed memory leak in original nfdump in LZO 
	- c: initial number of buckets in hash table increased to 500000
	- c: new functions lnf_mem_read_raw, lnf_mem_write_raw added
	- c: examples/lnf_ex06_readreset added
	- c: examples/lnf_ex05_memtrans added
	- c: examples/lnf_ex04_threads option -n added 
	- c: bug in bpd and pps calculation 
	- perl: removed memory leak in perl API (Bug #104294)
	- perl: nfasnupd accepts -c <file> with additional prefix database 

1.07 2015-03-17
	- c: nfdumpp utility added
	- c: added calculated items - duration, bps, pps, bpp
	- c: lnf_fld_info added 
	- c: lnf_fld_parse added 
	- c: lnf_mem_fastaggr added
	- c: lnf_info extended
	- c: performance update (15-20%)
	- c: thread support for filter operations (not released to public)
	- perl: static library removed from build tree (Bug #101544) 
	- perl: nf_asn_geo_update and download_asn_db removed
	- perl: bin/nfasnupd - ASn updater added (replacement for nf_asn_geo_update)
	- perl: doc update 

1.06 2014-12-06
	- c: lnf_rec_fget lnf_rec_fset performance update (15%)
	- c: added src/fields.c,h - code related to fields is now separated 
	- perl: build system update 

1.05 2014-12-05
	- c: build system update 
	- c: added --enable-threads for thread support; disabled by default
	- c: flex, bison is not needed for building 
	- c: adjusted to nfdump 1.6.13

1.04 2014-11-17
	- perl: added example examples/ 
	- perl: added test 08-aggreg-sort.t 
	- perl: aggregation and sorting added into 
	  Net::NfDump (Aggreg => 1 and SortBy => <field> attributes)
	- c: lnf_field_t structure extended with default sort and 
	  aggregation order 
	- c: added example lnf_ex04_threads.c 
	- c: threads support added for parallel processing flow 
	  records in aggregation. Code not released for public,
	  the public version works properly only in single 
	  thread environment.
	- c: added example lnf_ex03_aggreg.c 
	- c: added lnf_mem object with aggregation and sorting capability 
	- c: lnf_rec_fget, lnf_rec_fset increased performance (30%) 
	  Thanks to Vasek Bartos.

1.03 2014-06-23
	- c: headers includes in the examples
	- c: code preparation for aggregation and sorting
	- perl: test for pure read without record processing (-G)

1.02 2014-06-18
	- c: added structure lnf_brec1_t containing most commonly used records 
	- c: examples updated to use lnf_brec1_t
	- c: examples updated to be usable for benchmarks 
	- perl: updated build system (more resistant)
	- perl: benchmarks of c code added as the part of perl testing 

1.01 2014-06-15
	- source code strictly separated into autonomous 
	  package (libnf-xxx, universal C API) and perl 
	  Net::NfDump module that is placed on top of the C API
	- redesigned build system 
	- prepared for new features (aggregation, sorting, ...) 
	- changes inspired by Vasek Bartos and his libnfdump code 

0.14 2014-04-24
	- examples updated to use last version of Net::IP::LPM

0.13 2014-04-20
	- adjusted to nfdump 1.6.12
	- support for new record type introduced by nfdump 1.6.12
	- transparently reads record types from previous nfdump 
	- created files are always with the new record type 
	- !! files created by this version mus be read by nfdump >= 1.6.12
	- support for new fields (ingress_vrfid, egress_vrfid, event_flag
	  block_start, block_end, block_step, block_size)
	- flow_start item changed to event_time 
	- fw_event removed (use fw_xevent instead) 
	- doc extended with info about aggregation 

0.11 2013-11-26
	- adjusted to nfdump 1.6.11

0.10 2013-09-12
	- decreased test length 

0.09 2013-08-13
	- adjusted to nfdump 1.6.10p1

0.08 2013-06-06
	- removed bug in TimeWindowStart, thanks to Pavel Sejnoha

0.07 2013-05-21
	- removed bug in examples, thanks to James Deaton 
	- updated to nfdump 1.6.10

0.05 2013-05-03
	- language corrections

0.05 2013-03-16
	- silently skip known (but not supported) blocks 
	- example added (update AS info)

0.04 2013-03-03
	- the first stable version 

0.03_02 2013-03-03
	- the version of nfdump updated to 1.6.9

0.03_01 2013-02-28
	- NEL, NSEL support added 
	- a few bugs removed

0.02_05 2013-02-26
	- added 
	- documentation updated 

0.02_04 2013-02-24
	- a few bugs removed 
	- clonerow added 
	- InputFiles and Fields can by handled as a reference to list or comma separated list 

0.02_01 2013-02-11
	- hasharray functions added
	- performance optimization (4x faster) 

0.01_06 2013-01-20
	- nfdump source codes added into distribution 
	- fixes for libnf on OpenBSD apllied

0.01_04 2013-01-15
	- extra compilation of nfdump utility 

0.01_04 2013-01-14
	- removed dependency on lex/flex during compilation 

0.01_03  2013-01-12
	- fixes for multiplaform compilation 

0.01_02  2013-01-10 
	- documentation update 

0.01_01  2012-11-30 
	- initial version