mirror of
https://github.com/NLnetLabs/unbound.git
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Host cache setup.
git-svn-id: file:///svn/unbound/trunk@318 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards
parent
f060064e38
commit
62461e23be
4 changed files with 254 additions and 4 deletions
15
Makefile.in
15
Makefile.in
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@ -50,21 +50,28 @@ LINTFLAGS+="-DBN_ULONG=unsigned long" -Dkrb5_int32=int "-Dkrb5_ui_4=unsigned int
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INSTALL=$(srcdir)/install-sh
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COMMON_SRC=$(wildcard services/*.c util/*.c util/data/*.c util/storage/*.c iterator/*.c) util/configparser.c util/configlexer.c testcode/checklocks.c
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COMMON_SRC=$(wildcard services/*.c services/cache/*.c util/*.c \
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util/data/*.c util/storage/*.c iterator/*.c) util/configparser.c \
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util/configlexer.c testcode/checklocks.c
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COMMON_OBJ=$(addprefix $(BUILD),$(COMMON_SRC:.c=.o))
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COMPAT_OBJ=$(addprefix $(BUILD)compat/,$(LIBOBJS))
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UNITTEST_SRC=$(wildcard testcode/unit*.c) testcode/readhex.c $(COMMON_SRC)
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UNITTEST_OBJ=$(addprefix $(BUILD),$(UNITTEST_SRC:.c=.o)) $(COMPAT_OBJ)
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DAEMON_SRC=$(wildcard daemon/*.c) $(COMMON_SRC)
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DAEMON_OBJ=$(addprefix $(BUILD),$(DAEMON_SRC:.c=.o)) $(COMPAT_OBJ)
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TESTBOUND_SRC=testcode/testbound.c testcode/ldns-testpkts.c daemon/worker.c daemon/daemon.c daemon/stats.c testcode/replay.c testcode/fake_event.c $(filter-out util/netevent.c services/listen_dnsport.c services/outside_network.c, $(COMMON_SRC))
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TESTBOUND_SRC=testcode/testbound.c testcode/ldns-testpkts.c \
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daemon/worker.c daemon/daemon.c daemon/stats.c testcode/replay.c \
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testcode/fake_event.c $(filter-out util/netevent.c \
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services/listen_dnsport.c services/outside_network.c, $(COMMON_SRC))
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TESTBOUND_OBJ=$(addprefix $(BUILD),$(TESTBOUND_SRC:.c=.o)) $(COMPAT_OBJ)
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LOCKVERIFY_SRC=testcode/lock_verify.c $(COMMON_SRC)
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LOCKVERIFY_OBJ=$(addprefix $(BUILD),$(LOCKVERIFY_SRC:.c=.o)) $(COMPAT_OBJ)
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PKTVIEW_SRC=testcode/pktview.c testcode/readhex.c $(COMMON_SRC)
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PKTVIEW_OBJ=$(addprefix $(BUILD),$(PKTVIEW_SRC:.c=.o)) $(COMPAT_OBJ)
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ALL_SRC=$(COMMON_SRC) $(UNITTEST_SRC) $(DAEMON_SRC) $(TESTBOUND_SRC) $(LOCKVERIFY_SRC)
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ALL_OBJ=$(addprefix $(BUILD),$(ALL_SRC:.c=.o) $(addprefix compat/,$(LIBOBJS))) $(COMPAT_OBJ)
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ALL_SRC=$(COMMON_SRC) $(UNITTEST_SRC) $(DAEMON_SRC) \
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$(TESTBOUND_SRC) $(LOCKVERIFY_SRC)
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ALL_OBJ=$(addprefix $(BUILD),$(ALL_SRC:.c=.o) \
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$(addprefix compat/,$(LIBOBJS))) $(COMPAT_OBJ)
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COMPILE=$(LIBTOOL) --tag=CC --mode=compile $(CC) $(CPPFLAGS) $(CFLAGS)
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LINK=$(LIBTOOL) --tag=CC --mode=link $(CC) $(CFLAGS) $(LDFLAGS)
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@ -2,6 +2,7 @@
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- Port to OS/X and Dec Alpha. Printf format and alignment fixes.
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- extensive lock debug report on join timeout.
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- proper RTT calculation, in utility code.
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- setup of services/cache/infra, host cache.
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11 May 2007: Wouter
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- iterator/iterator.c module.
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43
services/cache/infra.c
vendored
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43
services/cache/infra.c
vendored
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@ -0,0 +1,43 @@
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/*
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* services/cache/infra.c - infrastructure cache, server rtt and capabilities
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains the infrastructure cache.
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*/
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#include "config.h"
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#include "services/cache/infra.h"
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199
services/cache/infra.h
vendored
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199
services/cache/infra.h
vendored
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@ -0,0 +1,199 @@
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/*
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* services/cache/infra.h - infrastructure cache, server rtt and capabilities
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains the infrastructure cache.
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*/
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#ifndef SERVICES_CACHE_INFRA_H
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#define SERVICES_CACHE_INFRA_H
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#include "util/storage/lruhash.h"
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#include "util/rtt.h"
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struct slabhash;
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struct config_file;
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/**
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* Host information kept for every server.
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*/
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struct infra_host_key {
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/** the host address. */
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struct sockaddr_storage addr;
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/** length of addr. */
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socklen_t addrlen;
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/** hash table entry, data of type infra_host_data. */
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struct lruhash_entry entry;
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};
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/**
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* Host information encompasses host capabilities and retransmission timeouts.
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*/
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struct infra_host_data {
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/** TTL value for this entry. absolute time. */
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time_t ttl;
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/** round trip times for timeout calculation */
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struct rtt_info rtt;
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/** Names of the zones that are lame. NULL=no lame zones. */
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struct lruhash* lameness;
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/** edns version that the host supports, -1 means no EDNS */
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int edns_version;
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/** edns message size that the host advertizes, 512 by default. */
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uint16_t edns_size;
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};
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/**
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* Lameness information, per host, per zone.
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*/
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struct infra_lame_key {
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/** key is zone name in wireformat */
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uint8_t* zonename;
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/** length of zonename */
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size_t namelen;
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/** lruhash entry */
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struct lruhash_entry entry;
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};
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/**
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* Lameness information. Expires.
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* This host is lame because it is in the cache.
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*/
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struct infra_lame_data {
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/** TTL of this entry. absolute time. */
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time_t ttl;
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};
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/** default TTL value for host information, in seconds */
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#define HOST_TTL 900
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/** default TTL for Lameness information, in seconds */
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#define HOST_LAME_TTL 900
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/** default size of the host cache, number of entries */
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#define HOST_DEFAULT_SIZE 1000
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/**
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* Create infra cache.
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* @param cfg: config parameters.
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* @return: new infra cache, or NULL.
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*/
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struct slabhash* infra_create(struct config_file* cfg);
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/**
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* Delete infra cache.
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* @param infra: infrastructure cache to delete.
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*/
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void infra_delete(struct slabhash* infra);
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/**
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* Lookup host data
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* @param infra: infrastructure cache.
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* @param addr: host address.
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* @param addrlen: length of addr.
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* @param wr: set to true to get a writelock on the entry.
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* @param timenow: what time it is now.
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* @return: host data or NULL if not found or expired.
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*/
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struct infra_data* infra_lookup_host(struct slabhash* infra,
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struct sockaddr_storage* addr, socklen_t addrlen, int wr,
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time_t timenow);
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/**
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* Find host information to send a packet. Creates new entry if not found.
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* Lameness is empty. EDNS is 0, size is 512, and rtt is returned for
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* the first message to it.
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* @param infra: infrastructure cache.
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* @param addr: host address.
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* @param addrlen: length of addr.
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* @param timenow: what time it is now.
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* @param edns_vs: edns version it supports, is returned.
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* @param to: timeout to use, is returned.
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* @return: 0 on error.
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*/
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int infra_host(struct slabhash* infra, struct sockaddr_storage* addr,
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socklen_t addrlen, time_t timenow, int* edns_vs, int* to);
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/**
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* Check for lameness of this server for a particular zone.
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* You must have a lock on the host structure.
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* @param host: infrastructure cache data for the host. Caller holds lock.
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* @param name: domain name of zone apex.
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* @param namelen: length of domain name.
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* @param timenow: what time it is now.
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* @return: 0 if not lame or unknown or timed out, true if lame.
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*/
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int infra_lookup_lame(struct infra_data* host,
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uint8_t* name, size_t namelen, time_t timenow);
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/**
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* Set a host to be lame for the given zone.
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* @param infra: infrastructure cache.
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* @param addr: host address.
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* @param addrlen: length of addr.
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* @param name: domain name of zone apex.
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* @param namelen: length of domain name.
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* @param timenow: what time it is now.
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* @return: 0 on error.
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*/
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int infra_set_lame(struct slabhash* infra,
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struct sockaddr_storage* addr, socklen_t addrlen,
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uint8_t* name, size_t namelen, time_t timenow);
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/**
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* Update rtt information for the host.
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* @param infra: infrastructure cache.
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* @param addr: host address.
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* @param addrlen: length of addr.
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* @param roundtrip: estimate of roundtrip time or -1 for timeout.
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* @param timenow: what time it is now.
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* @return: 0 on error.
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*/
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int infra_rtt_update(struct slabhash* infra,
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struct sockaddr_storage* addr, socklen_t addrlen,
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int roundtrip, time_t timenow);
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/**
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* Update edns information for the host.
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* @param infra: infrastructure cache.
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* @param addr: host address.
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* @param addrlen: length of addr.
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* @param edns_version: the version that it publishes.
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* @param udp_size: what udp size it can handle.
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* @param timenow: what time it is now.
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* @return: 0 on error.
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*/
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int infra_edns_update(struct slabhash* infra,
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struct sockaddr_storage* addr, socklen_t addrlen,
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int edns_version, uint16_t udp_size, time_t timenow);
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#endif /* SERVICES_CACHE_INFRA_H */
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