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Merge branch 'tilan7663-subnet_cache_prefetch' into subnet_cache_prefetch

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George Thessalonikefs
2023-07-07 16:50:58 +02:00
parent 0afe58a06e 40e47bf767
commit a952ac17be
7 changed files with 118 additions and 75 deletions
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testdata/subnet_prefetch.crpl
Vendored
+21 -54
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@@ -1,12 +1,12 @@
; Check if the prefetch option works properly for messages stored in the global
; cache for non-ECS clients. The prefetch query needs to result in an ECS
; outgoing query based on the client's IP.
; Check if the prefetch option works properly for messages stored in ECS cache
; for non-ECS clients.
server:
trust-anchor-signaling: no
target-fetch-policy: "0 0 0 0 0"
send-client-subnet: 1.2.3.4
max-client-subnet-ipv4: 21
client-subnet-always-forward: yes
module-config: "subnetcache iterator"
verbosity: 3
access-control: 127.0.0.1 allow_snoop
@@ -19,7 +19,7 @@ stub-zone:
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test prefetch option for global cache with ECS enabled
SCENARIO_BEGIN Test prefetch option for ECS cache
; K.ROOT-SERVERS.NET.
RANGE_BEGIN 0 100
@@ -78,38 +78,7 @@ RANGE_BEGIN 0 100
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 10
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
example.com. IN NS
SECTION ANSWER
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 11 100
RANGE_BEGIN 0 100
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qtype qname
@@ -154,7 +123,7 @@ SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This answer should be in the global cache (because no ECS from upstream)
; This answer will end up in the subnet cache
STEP 2 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
@@ -172,53 +141,51 @@ ENTRY_END
; Try to trigger a prefetch
STEP 3 TIME_PASSES ELAPSE 9
STEP 11 QUERY
STEP 4 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This record came from the global cache and a prefetch was triggered
STEP 12 CHECK_ANSWER
; This record came from the cache and a prefetch is triggered
STEP 5 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ttl
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 1 IN A 10.20.30.40
www.example.com. 1 IN A 10.20.30.40
SECTION AUTHORITY
example.com. 3591 IN NS ns.example.com.
example.com. 3591 IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. 3591 IN A 1.2.3.4
ns.example.com. 3591 IN A 1.2.3.4
ENTRY_END
; Allow time to pass so that the global cache record is expired
STEP 13 TIME_PASSES ELAPSE 2
; Allow for some time to pass to differentiate from a cached vs resolved answer
STEP 6 TIME_PASSES ELAPSE 1
; Query again to verify that the record was prefetched and stored in the ECS
; cache (because the server replied with ECS this time)
STEP 14 QUERY
STEP 7 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; This record came from the ECS cache
STEP 15 CHECK_ANSWER
; This prefetched record came from the ECS cache
STEP 8 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ttl
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
www.example.com. IN A
SECTION ANSWER
www.example.com. 8 IN A 10.20.30.40
www.example.com. 9 IN A 10.20.30.40
SECTION AUTHORITY
example.com. 3598 IN NS ns.example.com.
example.com. 3599 IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. 3598 IN A 1.2.3.4
ns.example.com. 3599 IN A 1.2.3.4
ENTRY_END
SCENARIO_END