#       $NetBSD: t_rtable.sh,v 1.8 2023/03/26 19:10:34 andvar Exp $
#
# Copyright (c) 2017 Internet Initiative Japan Inc.
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SOCK1=unix://commsock1
SOCK2=unix://commsock2
SOCK3=unix://commsock3
IP1=10.0.0.1
IP2=10.0.0.2

DEBUG=${DEBUG:-false}
TIMEOUT=5

setup_endpoint()
{
       local sock=${1}
       local addr=${2}
       local bus=${3}
       local mode=${4}

       rump_server_add_iface $sock shmif0 $bus
       export RUMP_SERVER=${sock}
       if [ $mode = "ipv6" ]; then
               atf_check -s exit:0 rump.ifconfig shmif0 inet6 ${addr}
       else
               atf_check -s exit:0 rump.ifconfig shmif0 inet ${addr} netmask 0xffffff00
       fi

       atf_check -s exit:0 rump.ifconfig shmif0 up
       $DEBUG && rump.ifconfig shmif0
}

setup_bridge_server()
{

       rump_server_add_iface $SOCK2 shmif0 bus1
       rump_server_add_iface $SOCK2 shmif1 bus2
       export RUMP_SERVER=$SOCK2
       atf_check -s exit:0 rump.ifconfig shmif0 up
       atf_check -s exit:0 rump.ifconfig shmif1 up
}

setup()
{

       rump_server_start $SOCK1 bridge
       rump_server_start $SOCK2 bridge
       rump_server_start $SOCK3 bridge

       setup_endpoint $SOCK1 $IP1 bus1 ipv4
       setup_endpoint $SOCK3 $IP2 bus2 ipv4
       setup_bridge_server
}

setup_bridge()
{

       export RUMP_SERVER=$SOCK2
       rump_server_add_iface $SOCK2 bridge0
       atf_check -s exit:0 rump.ifconfig bridge0 up

       export LD_PRELOAD=/usr/lib/librumphijack.so
       atf_check -s exit:0 /sbin/brconfig bridge0 add shmif0
       atf_check -s exit:0 /sbin/brconfig bridge0 add shmif1
       /sbin/brconfig bridge0
       unset LD_PRELOAD
       rump.ifconfig shmif0
       rump.ifconfig shmif1
}

get_number_of_caches()
{

       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       echo $(/sbin/brconfig bridge0 addr |wc -l)
       unset LD_PRELOAD
}


atf_test_case bridge_rtable_basic cleanup
bridge_rtable_basic_head()
{

       atf_set "descr" "Tests basic operations of bridge's learning table"
       atf_set "require.progs" "rump_server"
}

bridge_rtable_basic_body()
{
       local addr1= addr3=

       setup
       setup_bridge

       # Get MAC addresses of the endpoints.
       addr1=$(get_macaddr $SOCK1 shmif0)
       addr3=$(get_macaddr $SOCK3 shmif0)

       # Confirm there is no MAC address caches.
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr1" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr3" /sbin/brconfig bridge0
       unset LD_PRELOAD

       # Make the bridge learn the MAC addresses of the endpoints.
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       unset RUMP_SERVER

       # Tests the addresses are in the cache.
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr3 shmif1" /sbin/brconfig bridge0

       # Tests brconfig deladdr
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 deladdr "$addr1"
       atf_check -s exit:0 -o not-match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 deladdr "$addr3"
       atf_check -s exit:0 -o not-match:"$addr3 shmif1" /sbin/brconfig bridge0
       unset LD_PRELOAD

       rump_server_destroy_ifaces
}

bridge_rtable_basic_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_test_case bridge_rtable_flush cleanup
bridge_rtable_flush_head()
{

       atf_set "descr" "Tests brconfig flush"
       atf_set "require.progs" "rump_server"
}

bridge_rtable_flush_body()
{
       local addr1= addr3=
       local n=

       setup
       setup_bridge

       # Get MAC addresses of the endpoints.
       addr1=$(get_macaddr $SOCK1 shmif0)
       addr3=$(get_macaddr $SOCK3 shmif0)

       # Make the bridge learn the MAC addresses of the endpoints.
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       unset RUMP_SERVER

       # Tests the addresses are in the cache.
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr3 shmif1" /sbin/brconfig bridge0

       # Tests brconfig flush.
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 flush
       atf_check -s exit:0 -o not-match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr3 shmif1" /sbin/brconfig bridge0
       unset LD_PRELOAD

       # Add extra interfaces and addresses
       export RUMP_SERVER=$SOCK1
       rump_server_add_iface $SOCK1 shmif1 bus1
       atf_check -s exit:0 rump.ifconfig shmif1 10.0.0.11/24
       atf_check -s exit:0 rump.ifconfig -w 10

       export RUMP_SERVER=$SOCK3
       rump_server_add_iface $SOCK3 shmif1 bus2
       atf_check -s exit:0 rump.ifconfig shmif1 10.0.0.12/24
       atf_check -s exit:0 rump.ifconfig -w 10

       # Let cache entries
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 10.0.0.12
       export RUMP_SERVER=$SOCK3
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 10.0.0.11

       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       n=$(get_number_of_caches)
       atf_check_equal $n 4

       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 flush
       n=$(get_number_of_caches)
       atf_check_equal $n 0
       unset LD_PRELOAD

       rump_server_destroy_ifaces
}

bridge_rtable_flush_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_test_case bridge_rtable_timeout cleanup
bridge_rtable_timeout_head()
{

       atf_set "descr" "Tests cache timeout of bridge's learning table"
       atf_set "require.progs" "rump_server"
}

bridge_rtable_timeout_body()
{
       local addr1= addr3=
       local timeout=5

       setup
       setup_bridge

       # Get MAC addresses of the endpoints.
       addr1=$(get_macaddr $SOCK1 shmif0)
       addr3=$(get_macaddr $SOCK3 shmif0)

       # Tests brconfig timeout.
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       atf_check -s exit:0 -o match:"timeout: 1200" /sbin/brconfig bridge0
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 timeout $timeout
       atf_check -s exit:0 -o match:"timeout: $timeout" /sbin/brconfig bridge0
       unset LD_PRELOAD

       # Make the bridge learn the MAC addresses of the endpoints.
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       unset RUMP_SERVER

       # Tests the addresses are in the cache.
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr3 shmif1" /sbin/brconfig bridge0

       # TODO: cache expiration
       # The initial timeout value of a cache is changed to $timeout and
       # after $timeout elapsed the cache is ready to be sweeped. However,
       # the GC of rtable runs every 5 minutes and the cache remains until
       # then. Should we have a sysctl to change the period?

       #sleep $(($timeout + 2))
       #
       ## Tests the addresses are not in the cache.
       #export RUMP_SERVER=$SOCK2
       #export LD_PRELOAD=/usr/lib/librumphijack.so
       #$DEBUG && /sbin/brconfig bridge0
       #atf_check -s exit:0 -o not-match:"$addr1 shmif0" /sbin/brconfig bridge0
       #atf_check -s exit:0 -o not-match:"$addr3 shmif1" /sbin/brconfig bridge0

       rump_server_destroy_ifaces
}

bridge_rtable_timeout_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_test_case bridge_rtable_maxaddr cleanup
bridge_rtable_maxaddr_head()
{

       atf_set "descr" "Tests brconfig maxaddr"
       atf_set "require.progs" "rump_server"
}

bridge_rtable_maxaddr_body()
{
       local addr1= addr3=

       setup
       setup_bridge

       # Get MAC addresses of the endpoints.
       addr1=$(get_macaddr $SOCK1 shmif0)
       addr3=$(get_macaddr $SOCK3 shmif0)

       # Fill the MAC addresses of the endpoints.
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr3 shmif1" /sbin/brconfig bridge0

       # Check the default # of caches is 100
       atf_check -s exit:0 -o match:"max cache: 100" /sbin/brconfig bridge0

       # Test two MAC addresses are cached
       n=$(get_number_of_caches)
       atf_check_equal $n 2

       # Limit # of caches to one
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 maxaddr 1
       atf_check -s exit:0 -o match:"max cache: 1" /sbin/brconfig bridge0
       /sbin/brconfig bridge0

       # Check a cache is flushed out
       n=$(get_number_of_caches)
       atf_check_equal $n 1

       # Test a new address cache is not created
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       export RUMP_SERVER=$SOCK2
       n=$(get_number_of_caches)
       atf_check_equal $n 1

       # Increase # of caches to two
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 maxaddr 2
       atf_check -s exit:0 -o match:"max cache: 2" /sbin/brconfig bridge0
       unset LD_PRELOAD

       # Test we can cache two addresses again
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 $IP2
       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr1 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr3 shmif1" /sbin/brconfig bridge0
       unset LD_PRELOAD

       rump_server_destroy_ifaces
}

bridge_rtable_maxaddr_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_test_case bridge_rtable_delete_member cleanup
bridge_rtable_delete_member_head()
{

       atf_set "descr" "Tests belonging rtable entries are removed on deleting an interface"
       atf_set "require.progs" "rump_server"
}

bridge_rtable_delete_member_body()
{
       local addr10= addr30= addr11= addr31=
       local n=

       setup
       setup_bridge

       # Add extra interfaces and addresses
       export RUMP_SERVER=$SOCK1
       rump_server_add_iface $SOCK1 shmif1 bus1
       atf_check -s exit:0 rump.ifconfig shmif1 10.0.0.11/24
       atf_check -s exit:0 rump.ifconfig -w 10

       export RUMP_SERVER=$SOCK3
       rump_server_add_iface $SOCK3 shmif1 bus2
       atf_check -s exit:0 rump.ifconfig shmif1 10.0.0.12/24
       atf_check -s exit:0 rump.ifconfig -w 10

       # Get MAC addresses of the endpoints.
       addr10=$(get_macaddr $SOCK1 shmif0)
       addr30=$(get_macaddr $SOCK3 shmif0)
       addr11=$(get_macaddr $SOCK1 shmif1)
       addr31=$(get_macaddr $SOCK3 shmif1)

       # Make the bridge learn the MAC addresses of the endpoints.
       export RUMP_SERVER=$SOCK1
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 10.0.0.12
       export RUMP_SERVER=$SOCK3
       atf_check -s exit:0 -o ignore rump.ping -n -w $TIMEOUT -c 1 10.0.0.11

       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       $DEBUG && /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr10 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr11 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr30 shmif1" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr31 shmif1" /sbin/brconfig bridge0

       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 delete shmif0
       atf_check -s exit:0 -o not-match:"$addr10 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr11 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr30 shmif1" /sbin/brconfig bridge0
       atf_check -s exit:0 -o match:"$addr31 shmif1" /sbin/brconfig bridge0

       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 delete shmif1
       atf_check -s exit:0 -o not-match:"$addr10 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr11 shmif0" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr30 shmif1" /sbin/brconfig bridge0
       atf_check -s exit:0 -o not-match:"$addr31 shmif1" /sbin/brconfig bridge0

       rump_server_destroy_ifaces
}

bridge_rtable_delete_member_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_test_case bridge_rtable_manyaddrs cleanup
bridge_rtable_manyaddrs_head()
{

       atf_set "descr" "Tests brconfig addr under many MAC addresses"
       atf_set "require.progs" "rump_server"
       atf_set "timeout" "1200"
}

bridge_rtable_manyaddrs_body()
{
       local addr=

       setup
       setup_bridge

       export RUMP_SERVER=$SOCK2
       export LD_PRELOAD=/usr/lib/librumphijack.so
       atf_check -s exit:0 -o ignore /sbin/brconfig bridge0 maxaddr 1024

       # Fill the MAC addresses
       for i in 1 2 3 4; do
               for j in $(seq 0 255); do
                       addr="00:11:22:33:4$i:$(printf "%02x" $j)"
                       atf_check -s exit:0 -o empty \
                           /sbin/brconfig bridge0 static shmif0 $addr
               done

               n=$(get_number_of_caches)
               atf_check_equal $n $((i * 256))
       done


       rump_server_destroy_ifaces
}

bridge_rtable_manyaddrs_cleanup()
{

       $DEBUG && dump
       cleanup
}


atf_init_test_cases()
{

       atf_add_test_case bridge_rtable_basic
       atf_add_test_case bridge_rtable_flush
       atf_add_test_case bridge_rtable_timeout
       atf_add_test_case bridge_rtable_maxaddr
       atf_add_test_case bridge_rtable_delete_member
       atf_add_test_case bridge_rtable_manyaddrs
       # TODO: brconfig static/flushall/discover/learn
}

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