bind9/lib/dns
Tony Finch 45b2d8938b
Simplify and speed up DNS name compression
All we need for compression is a very small hash set of compression
offsets, because most of the information we need (the previously added
names) can be found in the message using the compression offsets.

This change combines dns_compress_find() and dns_compress_add() into
one function dns_compress_name() that both finds any existing suffix,
and adds any new prefix to the table. The old split led to performance
problems caused by duplicate names in the compression context.

Compression contexts are now either small or large, which the caller
chooses depending on the expected size of the message. There is no
dynamic resizing.

There is a behaviour change: compression now acts on all the labels in
each name, instead of just the last few.

A small benchmark suggests this is about 2x faster.
2022-10-17 08:45:44 +02:00
..
include Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
rdata Improve reporting for pthread_once errors 2022-10-14 16:39:21 +02:00
.gitignore 4394. [func] Add rndc command "dnstap-reopen" to close and 2016-06-24 09:37:04 +10:00
acl.c Improve reporting for pthread_once errors 2022-10-14 16:39:21 +02:00
adb.c Update netmgr, tasks, and applications to use isc_loopmgr 2022-08-26 09:09:24 +02:00
badcache.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
byaddr.c Remove dns_lookup and unused functions in dns_byaddr 2022-05-25 14:44:32 +02:00
cache.c Update netmgr, tasks, and applications to use isc_loopmgr 2022-08-26 09:09:24 +02:00
callbacks.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
catz.c Add and use semantic patch to replace isc_mem_get/allocate+memset 2022-10-05 16:44:05 +02:00
client.c Update netmgr, tasks, and applications to use isc_loopmgr 2022-08-26 09:09:24 +02:00
clientinfo.c allow dns_clientinfo to store client ECS data 2022-01-27 13:53:59 -08:00
compress.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
db.c Improve reporting for pthread_once errors 2022-10-14 16:39:21 +02:00
dbiterator.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
diff.c dns_rdatalist_tordataset() and dns_rdatalist_fromrdataset() can not fail 2022-08-09 08:19:51 +00:00
dispatch.c Implement TLS transport support for dns_request and dns_dispatch 2022-09-19 16:36:28 +00:00
dlz.c Improve reporting for pthread_once errors 2022-10-14 16:39:21 +02:00
dns64.c Add isc_rwlock around dns_aclenv .localhost and .localnets member 2022-04-04 19:27:00 +02:00
dnsrps.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
dnssec.c Add the ability specify the signing / verification time 2022-09-26 16:28:12 +02:00
dnstap.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
dnstap.proto Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
ds.c Simplify way we tag unreachable code with only ISC_UNREACHABLE() 2022-03-25 08:33:43 +01:00
dst_api.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
dst_internal.h Check if key metadata is modified before writing 2022-05-13 13:31:17 +02:00
dst_openssl.h Use autoconf check for BN_GENCB_new() 2022-03-02 10:48:09 +00:00
dst_parse.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
dst_parse.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
dyndb.c Improve reporting for pthread_once errors 2022-10-14 16:39:21 +02:00
ecs.c Simplify way we tag unreachable code with only ISC_UNREACHABLE() 2022-03-25 08:33:43 +01:00
fixedname.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
forward.c Cleanup dns_fwdtable_delete() 2022-06-09 10:47:04 +00:00
gen.c Use the semantic patch to do the unsigned -> unsigned int change 2022-09-19 15:56:02 +02:00
geoip2.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
gssapi_link.c Remove a redundant variable-length array 2022-03-18 15:06:31 +00:00
gssapictx.c Remove use of the inline keyword used as suggestion to compiler 2022-03-25 08:33:43 +01:00
hmac_link.c Remove use of the inline keyword used as suggestion to compiler 2022-03-25 08:33:43 +01:00
ipkeylist.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
iptable.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
journal.c Add and use semantic patch to replace isc_mem_get/allocate+memset 2022-10-05 16:44:05 +02:00
kasp.c Store built-in dnssec-policies in defaultconf 2022-06-28 11:56:31 +02:00
key.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
keydata.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
keymgr.c Nit changes in keymgr and kasp 2022-06-28 11:56:31 +02:00
keytable.c Add synth-from-dnssec namespaces for keytable entries 2022-07-05 12:29:01 +10:00
log.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
Makefile.am Update libdns_la_LIBADD rather than libdns_la_LDFLAGS 2022-07-13 00:14:13 +00:00
master.c dns_rdatalist_tordataset() and dns_rdatalist_fromrdataset() can not fail 2022-08-09 08:19:51 +00:00
masterdump.c Use the semantic patch to do the unsigned -> unsigned int change 2022-09-19 15:56:02 +02:00
message.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
name.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
ncache.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
nsec.c Wait with NSEC3 during a DNSSEC policy change 2022-08-22 15:55:46 +02:00
nsec3.c nsec3.c: Add a missing dns_db_detachnode() call 2022-08-23 11:01:31 +02:00
nta.c Resolve violation of weak referencing dns_view 2022-10-05 11:59:36 -07:00
openssl_link.c Add ENGINE_init and ENGINE_finish calls 2022-09-23 13:15:16 +10:00
openssl_shim.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
openssl_shim.h Remove DH_clear_flags call 2022-07-18 13:38:47 +02:00
openssldh_link.c Do not use OSSL_PARAM when engine API is compiled 2022-09-23 13:17:53 +10:00
opensslecdsa_link.c Remove engine related parts for OpenSSL 3.0 2022-09-23 13:17:55 +10:00
openssleddsa_link.c Free ctx on invalid siglen 2022-09-08 11:27:31 +02:00
opensslrsa_link.c Check BN_dup results in rsa_check 2022-09-28 09:24:34 +10:00
order.c Remove use of the inline keyword used as suggestion to compiler 2022-03-25 08:33:43 +01:00
peer.c Add server clause require-cookie 2022-09-13 12:07:13 +10:00
private.c Increase the BUFSIZ-long buffers 2022-07-15 10:33:46 +00:00
rbt.c Replace #define DNS_NAMEATTR_ with struct of bools 2022-10-13 17:04:02 +02:00
rbtdb.c Replace #define DNS_NAMEATTR_ with struct of bools 2022-10-13 17:04:02 +02:00
rbtdb.h Remove remaining checks for rbt64 2022-05-03 00:41:42 +01:00
rcode.c Use the semantic patch to do the unsigned -> unsigned int change 2022-09-19 15:56:02 +02:00
rdata.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
rdatalist.c dns_rdatalist_tordataset() and dns_rdatalist_fromrdataset() can not fail 2022-08-09 08:19:51 +00:00
rdatalist_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
rdataset.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
rdatasetiter.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
rdataslab.c Add and use semantic patch to replace isc_mem_get/allocate+memset 2022-10-05 16:44:05 +02:00
request.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
resolver.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
result.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
rootns.c Clean up #include <isc/string.h> 2022-05-03 12:38:59 +00:00
rpz.c Create the response policy zones update timer on demand 2022-09-21 14:25:33 -07:00
rriterator.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
rrl.c Replace #define DNS_NAMEATTR_ with struct of bools 2022-10-13 17:04:02 +02:00
sdb.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
sdlz.c Use designated initializers instead of memset()/MEM_ZERO for structs 2022-10-05 16:44:05 +02:00
soa.c Remove use of the inline keyword used as suggestion to compiler 2022-03-25 08:33:43 +01:00
ssu.c Add isc_rwlock around dns_aclenv .localhost and .localnets member 2022-04-04 19:27:00 +02:00
ssu_external.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
stats.c Emit key algorithm + key id in dnssec signing statsistics 2022-09-15 08:42:45 +10:00
tests Move all the unit tests to /tests/<libname>/ 2022-05-28 14:53:02 -07:00
time.c Clean up #include <isc/string.h> 2022-05-03 12:38:59 +00:00
tkey.c Refactor tkey.c:buildquery() error handling 2022-08-16 07:36:12 +00:00
transport.c Implement DoT support for nsupdate 2022-09-23 13:23:49 +00:00
tsec.c Simplify way we tag unreachable code with only ISC_UNREACHABLE() 2022-03-25 08:33:43 +01:00
tsig.c Replace #define DNS_NAMEATTR_ with struct of bools 2022-10-13 17:04:02 +02:00
tsig_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
ttl.c Use the semantic patch to do the unsigned -> unsigned int change 2022-09-19 15:56:02 +02:00
update.c Create per-thread task and memory context for zonemgr 2022-04-01 23:50:34 +02:00
validator.c the validator can attach to the view normally 2022-05-13 13:36:10 -07:00
view.c Record the 'edns-udp-size' in the view, not in the resolver 2022-10-05 11:59:36 -07:00
xfrin.c Simplify and speed up DNS name compression 2022-10-17 08:45:44 +02:00
zone.c Record the 'edns-udp-size' in the view, not in the resolver 2022-10-05 11:59:36 -07:00
zone_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
zonekey.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
zoneverify.c Add and use semantic patch to replace isc_mem_get/allocate+memset 2022-10-05 16:44:05 +02:00
zt.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00