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linuxdebug/tools/testing/selftests/net/mptcp/userspace_pm.sh

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null pointer error
2024-07-16 15:50:57 +02:00
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
. "$(dirname "${0}")/mptcp_lib.sh"
mptcp_lib_check_mptcp
if ! mptcp_lib_has_file '/proc/sys/net/mptcp/pm_type'; then
echo "userspace pm tests are not supported by the kernel: SKIP"
exit ${KSFT_SKIP}
fi
ip -Version > /dev/null 2>&1
if [ $? -ne 0 ];then
echo "SKIP: Cannot not run test without ip tool"
exit ${KSFT_SKIP}
fi
ANNOUNCED=6 # MPTCP_EVENT_ANNOUNCED
REMOVED=7 # MPTCP_EVENT_REMOVED
SUB_ESTABLISHED=10 # MPTCP_EVENT_SUB_ESTABLISHED
SUB_CLOSED=11 # MPTCP_EVENT_SUB_CLOSED
AF_INET=2
AF_INET6=10
evts_pid=0
client4_pid=0
server4_pid=0
client6_pid=0
server6_pid=0
client4_token=""
server4_token=""
client6_token=""
server6_token=""
client4_port=0;
client6_port=0;
app4_port=50002
new4_port=50003
app6_port=50004
client_addr_id=${RANDOM:0:2}
server_addr_id=${RANDOM:0:2}
sec=$(date +%s)
rndh=$(stdbuf -o0 -e0 printf %x "$sec")-$(mktemp -u XXXXXX)
ns1="ns1-$rndh"
ns2="ns2-$rndh"
kill_wait()
{
kill $1 > /dev/null 2>&1
wait $1 2>/dev/null
}
cleanup()
{
echo "cleanup"
rm -rf $file
# Terminate the MPTCP connection and related processes
if [ $client4_pid -ne 0 ]; then
kill -SIGUSR1 $client4_pid > /dev/null 2>&1
fi
if [ $server4_pid -ne 0 ]; then
kill_wait $server4_pid
fi
if [ $client6_pid -ne 0 ]; then
kill -SIGUSR1 $client6_pid > /dev/null 2>&1
fi
if [ $server6_pid -ne 0 ]; then
kill_wait $server6_pid
fi
if [ $evts_pid -ne 0 ]; then
kill_wait $evts_pid
fi
local netns
for netns in "$ns1" "$ns2" ;do
ip netns del "$netns"
done
}
trap cleanup EXIT
# Create and configure network namespaces for testing
for i in "$ns1" "$ns2" ;do
ip netns add "$i" || exit 1
ip -net "$i" link set lo up
ip netns exec "$i" sysctl -q net.mptcp.enabled=1
ip netns exec "$i" sysctl -q net.mptcp.pm_type=1
done
# "$ns1" ns2
# ns1eth2 ns2eth1
ip link add ns1eth2 netns "$ns1" type veth peer name ns2eth1 netns "$ns2"
# Add IPv4/v6 addresses to the namespaces
ip -net "$ns1" addr add 10.0.1.1/24 dev ns1eth2
ip -net "$ns1" addr add 10.0.2.1/24 dev ns1eth2
ip -net "$ns1" addr add dead:beef:1::1/64 dev ns1eth2 nodad
ip -net "$ns1" addr add dead:beef:2::1/64 dev ns1eth2 nodad
ip -net "$ns1" link set ns1eth2 up
ip -net "$ns2" addr add 10.0.1.2/24 dev ns2eth1
ip -net "$ns2" addr add 10.0.2.2/24 dev ns2eth1
ip -net "$ns2" addr add dead:beef:1::2/64 dev ns2eth1 nodad
ip -net "$ns2" addr add dead:beef:2::2/64 dev ns2eth1 nodad
ip -net "$ns2" link set ns2eth1 up
stdbuf -o0 -e0 printf "Created network namespaces ns1, ns2 \t\t\t[OK]\n"
make_file()
{
# Store a chunk of data in a file to transmit over an MPTCP connection
local name=$1
local ksize=1
dd if=/dev/urandom of="$name" bs=2 count=$ksize 2> /dev/null
echo -e "\nMPTCP_TEST_FILE_END_MARKER" >> "$name"
}
make_connection()
{
local file
file=$(mktemp)
make_file "$file" "client"
local is_v6=$1
local app_port=$app4_port
local connect_addr="10.0.1.1"
local listen_addr="0.0.0.0"
if [ "$is_v6" = "v6" ]
then
connect_addr="dead:beef:1::1"
listen_addr="::"
app_port=$app6_port
else
is_v6="v4"
fi
# Capture netlink events over the two network namespaces running
# the MPTCP client and server
local client_evts
client_evts=$(mktemp)
:>"$client_evts"
ip netns exec "$ns2" ./pm_nl_ctl events >> "$client_evts" 2>&1 &
local client_evts_pid=$!
local server_evts
server_evts=$(mktemp)
:>"$server_evts"
ip netns exec "$ns1" ./pm_nl_ctl events >> "$server_evts" 2>&1 &
local server_evts_pid=$!
sleep 0.5
# Run the server
ip netns exec "$ns1" \
./mptcp_connect -s MPTCP -w 300 -p $app_port -l $listen_addr > /dev/null 2>&1 &
local server_pid=$!
sleep 0.5
# Run the client, transfer $file and stay connected to the server
# to conduct tests
ip netns exec "$ns2" \
./mptcp_connect -s MPTCP -w 300 -m sendfile -p $app_port $connect_addr\
2>&1 > /dev/null < "$file" &
local client_pid=$!
sleep 1
# Capture client/server attributes from MPTCP connection netlink events
kill_wait $client_evts_pid
local client_token
local client_port
local client_serverside
local server_token
local server_serverside
client_token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$client_evts")
client_port=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$client_evts")
client_serverside=$(sed --unbuffered -n 's/.*\(server_side:\)\([[:digit:]]*\).*$/\2/p;q'\
"$client_evts")
kill_wait $server_evts_pid
server_token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$server_evts")
server_serverside=$(sed --unbuffered -n 's/.*\(server_side:\)\([[:digit:]]*\).*$/\2/p;q'\
"$server_evts")
rm -f "$client_evts" "$server_evts" "$file"
if [ "$client_token" != "" ] && [ "$server_token" != "" ] && [ "$client_serverside" = 0 ] &&
[ "$server_serverside" = 1 ]
then
stdbuf -o0 -e0 printf "Established IP%s MPTCP Connection ns2 => ns1 \t\t[OK]\n" $is_v6
else
exit 1
fi
if [ "$is_v6" = "v6" ]
then
client6_token=$client_token
server6_token=$server_token
client6_port=$client_port
client6_pid=$client_pid
server6_pid=$server_pid
else
client4_token=$client_token
server4_token=$server_token
client4_port=$client_port
client4_pid=$client_pid
server4_pid=$server_pid
fi
}
verify_announce_event()
{
local evt=$1
local e_type=$2
local e_token=$3
local e_addr=$4
local e_id=$5
local e_dport=$6
local e_af=$7
local type
local token
local addr
local dport
local id
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
if [ "$e_af" = "v6" ]
then
addr=$(sed --unbuffered -n 's/.*\(daddr6:\)\([0-9a-f:.]*\).*$/\2/p;q' "$evt")
else
addr=$(sed --unbuffered -n 's/.*\(daddr4:\)\([0-9.]*\).*$/\2/p;q' "$evt")
fi
dport=$(sed --unbuffered -n 's/.*\(dport:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
id=$(sed --unbuffered -n 's/.*\(rem_id:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
if [ "$type" = "$e_type" ] && [ "$token" = "$e_token" ] &&
[ "$addr" = "$e_addr" ] && [ "$dport" = "$e_dport" ] &&
[ "$id" = "$e_id" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
return 0
fi
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
}
test_announce()
{
local evts
evts=$(mktemp)
# Capture events on the network namespace running the server
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# ADD_ADDR using an invalid token should result in no action
local invalid_token=$(( client4_token - 1))
ip netns exec "$ns2" ./pm_nl_ctl ann 10.0.2.2 token $invalid_token id\
$client_addr_id dev ns2eth1 > /dev/null 2>&1
local type
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
stdbuf -o0 -e0 printf "ADD_ADDR 10.0.2.2 (ns2) => ns1, invalid token \t\t"
if [ "$type" = "" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
else
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
fi
# ADD_ADDR from the client to server machine reusing the subflow port
:>"$evts"
ip netns exec "$ns2"\
./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id $client_addr_id dev\
ns2eth1 > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR id:%d 10.0.2.2 (ns2) => ns1, reuse port \t\t" $client_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$server4_token" "10.0.2.2" "$client_addr_id"\
"$client4_port"
# ADD_ADDR6 from the client to server machine reusing the subflow port
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl ann\
dead:beef:2::2 token "$client6_token" id $client_addr_id dev ns2eth1 > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR6 id:%d dead:beef:2::2 (ns2) => ns1, reuse port\t\t" $client_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$server6_token" "dead:beef:2::2"\
"$client_addr_id" "$client6_port" "v6"
# ADD_ADDR from the client to server machine using a new port
:>"$evts"
client_addr_id=$((client_addr_id+1))
ip netns exec "$ns2" ./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id\
$client_addr_id dev ns2eth1 port $new4_port > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR id:%d 10.0.2.2 (ns2) => ns1, new port \t\t\t" $client_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$server4_token" "10.0.2.2"\
"$client_addr_id" "$new4_port"
kill_wait $evts_pid
# Capture events on the network namespace running the client
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# ADD_ADDR from the server to client machine reusing the subflow port
ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
$server_addr_id dev ns1eth2 > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR id:%d 10.0.2.1 (ns1) => ns2, reuse port \t\t" $server_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$client4_token" "10.0.2.1"\
"$server_addr_id" "$app4_port"
# ADD_ADDR6 from the server to client machine reusing the subflow port
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl ann dead:beef:2::1 token "$server6_token" id\
$server_addr_id dev ns1eth2 > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR6 id:%d dead:beef:2::1 (ns1) => ns2, reuse port\t\t" $server_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$client6_token" "dead:beef:2::1"\
"$server_addr_id" "$app6_port" "v6"
# ADD_ADDR from the server to client machine using a new port
:>"$evts"
server_addr_id=$((server_addr_id+1))
ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
$server_addr_id dev ns1eth2 port $new4_port > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR id:%d 10.0.2.1 (ns1) => ns2, new port \t\t\t" $server_addr_id
sleep 0.5
verify_announce_event "$evts" "$ANNOUNCED" "$client4_token" "10.0.2.1"\
"$server_addr_id" "$new4_port"
kill_wait $evts_pid
rm -f "$evts"
}
verify_remove_event()
{
local evt=$1
local e_type=$2
local e_token=$3
local e_id=$4
local type
local token
local id
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
id=$(sed --unbuffered -n 's/.*\(rem_id:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
if [ "$type" = "$e_type" ] && [ "$token" = "$e_token" ] &&
[ "$id" = "$e_id" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
return 0
fi
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
}
test_remove()
{
local evts
evts=$(mktemp)
# Capture events on the network namespace running the server
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# RM_ADDR using an invalid token should result in no action
local invalid_token=$(( client4_token - 1 ))
ip netns exec "$ns2" ./pm_nl_ctl rem token $invalid_token id\
$client_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns2 => ns1, invalid token \t"\
$client_addr_id
local type
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
if [ "$type" = "" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
else
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
fi
# RM_ADDR using an invalid addr id should result in no action
local invalid_id=$(( client_addr_id + 1 ))
ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
$invalid_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns2 => ns1, invalid id \t"\
$invalid_id
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
if [ "$type" = "" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
else
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
fi
# RM_ADDR from the client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
$client_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns2 => ns1 \t"\
$client_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$server4_token" "$client_addr_id"
# RM_ADDR from the client to server machine
:>"$evts"
client_addr_id=$(( client_addr_id - 1 ))
ip netns exec "$ns2" ./pm_nl_ctl rem token "$client4_token" id\
$client_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns2 => ns1 \t"\
$client_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$server4_token" "$client_addr_id"
# RM_ADDR6 from the client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl rem token "$client6_token" id\
$client_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR6 id:%d ns2 => ns1 \t"\
$client_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$server6_token" "$client_addr_id"
kill_wait $evts_pid
# Capture events on the network namespace running the client
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# RM_ADDR from the server to client machine
ip netns exec "$ns1" ./pm_nl_ctl rem token "$server4_token" id\
$server_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns1 => ns2 \t"\
$server_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$client4_token" "$server_addr_id"
# RM_ADDR from the server to client machine
:>"$evts"
server_addr_id=$(( server_addr_id - 1 ))
ip netns exec "$ns1" ./pm_nl_ctl rem token "$server4_token" id\
$server_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR id:%d ns1 => ns2 \t" $server_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$client4_token" "$server_addr_id"
# RM_ADDR6 from the server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl rem token "$server6_token" id\
$server_addr_id > /dev/null 2>&1
stdbuf -o0 -e0 printf "RM_ADDR6 id:%d ns1 => ns2 \t" $server_addr_id
sleep 0.5
verify_remove_event "$evts" "$REMOVED" "$client6_token" "$server_addr_id"
kill_wait $evts_pid
rm -f "$evts"
}
verify_subflow_events()
{
local evt=$1
local e_type=$2
local e_token=$3
local e_family=$4
local e_saddr=$5
local e_daddr=$6
local e_dport=$7
local e_locid=$8
local e_remid=$9
shift 2
local e_from=$8
local e_to=$9
local type
local token
local family
local saddr
local daddr
local dport
local locid
local remid
if [ "$e_type" = "$SUB_ESTABLISHED" ]
then
if [ "$e_family" = "$AF_INET6" ]
then
stdbuf -o0 -e0 printf "CREATE_SUBFLOW6 %s (%s) => %s (%s) "\
"$e_saddr" "$e_from" "$e_daddr" "$e_to"
else
stdbuf -o0 -e0 printf "CREATE_SUBFLOW %s (%s) => %s (%s) \t"\
"$e_saddr" "$e_from" "$e_daddr" "$e_to"
fi
else
if [ "$e_family" = "$AF_INET6" ]
then
stdbuf -o0 -e0 printf "DESTROY_SUBFLOW6 %s (%s) => %s (%s) "\
"$e_saddr" "$e_from" "$e_daddr" "$e_to"
else
stdbuf -o0 -e0 printf "DESTROY_SUBFLOW %s (%s) => %s (%s) \t"\
"$e_saddr" "$e_from" "$e_daddr" "$e_to"
fi
fi
type=$(sed --unbuffered -n 's/.*\(type:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
token=$(sed --unbuffered -n 's/.*\(token:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
family=$(sed --unbuffered -n 's/.*\(family:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
dport=$(sed --unbuffered -n 's/.*\(dport:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
locid=$(sed --unbuffered -n 's/.*\(loc_id:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
remid=$(sed --unbuffered -n 's/.*\(rem_id:\)\([[:digit:]]*\).*$/\2/p;q' "$evt")
if [ "$family" = "$AF_INET6" ]
then
saddr=$(sed --unbuffered -n 's/.*\(saddr6:\)\([0-9a-f:.]*\).*$/\2/p;q' "$evt")
daddr=$(sed --unbuffered -n 's/.*\(daddr6:\)\([0-9a-f:.]*\).*$/\2/p;q' "$evt")
else
saddr=$(sed --unbuffered -n 's/.*\(saddr4:\)\([0-9.]*\).*$/\2/p;q' "$evt")
daddr=$(sed --unbuffered -n 's/.*\(daddr4:\)\([0-9.]*\).*$/\2/p;q' "$evt")
fi
if [ "$type" = "$e_type" ] && [ "$token" = "$e_token" ] &&
[ "$daddr" = "$e_daddr" ] && [ "$e_dport" = "$dport" ] &&
[ "$family" = "$e_family" ] && [ "$saddr" = "$e_saddr" ] &&
[ "$e_locid" = "$locid" ] && [ "$e_remid" = "$remid" ]
then
stdbuf -o0 -e0 printf "[OK]\n"
return 0
fi
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
}
test_subflows()
{
local evts
evts=$(mktemp)
# Capture events on the network namespace running the server
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# Attempt to add a listener at 10.0.2.2:<subflow-port>
ip netns exec "$ns2" ./pm_nl_ctl listen 10.0.2.2\
"$client4_port" > /dev/null 2>&1 &
local listener_pid=$!
# ADD_ADDR from client to server machine reusing the subflow port
ip netns exec "$ns2" ./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id\
$client_addr_id > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl csf lip 10.0.2.1 lid 23 rip 10.0.2.2\
rport "$client4_port" token "$server4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$server4_token" "$AF_INET" "10.0.2.1"\
"10.0.2.2" "$client4_port" "23" "$client_addr_id" "ns1" "ns2"
# Delete the listener from the client ns, if one was created
kill_wait $listener_pid
local sport
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl dsf lip 10.0.2.1 lport "$sport" rip 10.0.2.2 rport\
"$client4_port" token "$server4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$server4_token" "$AF_INET" "10.0.2.1"\
"10.0.2.2" "$client4_port" "23" "$client_addr_id" "ns1" "ns2"
# RM_ADDR from client to server machine
ip netns exec "$ns2" ./pm_nl_ctl rem id $client_addr_id token\
"$client4_token" > /dev/null 2>&1
sleep 0.5
# Attempt to add a listener at dead:beef:2::2:<subflow-port>
ip netns exec "$ns2" ./pm_nl_ctl listen dead:beef:2::2\
"$client6_port" > /dev/null 2>&1 &
listener_pid=$!
# ADD_ADDR6 from client to server machine reusing the subflow port
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl ann dead:beef:2::2 token "$client6_token" id\
$client_addr_id > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW6 from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl csf lip dead:beef:2::1 lid 23 rip\
dead:beef:2::2 rport "$client6_port" token "$server6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$server6_token" "$AF_INET6"\
"dead:beef:2::1" "dead:beef:2::2" "$client6_port" "23"\
"$client_addr_id" "ns1" "ns2"
# Delete the listener from the client ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW6 from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl dsf lip dead:beef:2::1 lport "$sport" rip\
dead:beef:2::2 rport "$client6_port" token "$server6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$server6_token" "$AF_INET6"\
"dead:beef:2::1" "dead:beef:2::2" "$client6_port" "23"\
"$client_addr_id" "ns1" "ns2"
# RM_ADDR from client to server machine
ip netns exec "$ns2" ./pm_nl_ctl rem id $client_addr_id token\
"$client6_token" > /dev/null 2>&1
sleep 0.5
# Attempt to add a listener at 10.0.2.2:<new-port>
ip netns exec "$ns2" ./pm_nl_ctl listen 10.0.2.2\
$new4_port > /dev/null 2>&1 &
listener_pid=$!
# ADD_ADDR from client to server machine using a new port
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl ann 10.0.2.2 token "$client4_token" id\
$client_addr_id port $new4_port > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl csf lip 10.0.2.1 lid 23 rip 10.0.2.2 rport\
$new4_port token "$server4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$server4_token" "$AF_INET"\
"10.0.2.1" "10.0.2.2" "$new4_port" "23"\
"$client_addr_id" "ns1" "ns2"
# Delete the listener from the client ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW from server to client machine
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl dsf lip 10.0.2.1 lport "$sport" rip 10.0.2.2 rport\
$new4_port token "$server4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$server4_token" "$AF_INET" "10.0.2.1"\
"10.0.2.2" "$new4_port" "23" "$client_addr_id" "ns1" "ns2"
# RM_ADDR from client to server machine
ip netns exec "$ns2" ./pm_nl_ctl rem id $client_addr_id token\
"$client4_token" > /dev/null 2>&1
kill_wait $evts_pid
# Capture events on the network namespace running the client
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl events >> "$evts" 2>&1 &
evts_pid=$!
sleep 0.5
# Attempt to add a listener at 10.0.2.1:<subflow-port>
ip netns exec "$ns1" ./pm_nl_ctl listen 10.0.2.1\
$app4_port > /dev/null 2>&1 &
listener_pid=$!
# ADD_ADDR from server to client machine reusing the subflow port
ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
$server_addr_id > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl csf lip 10.0.2.2 lid 23 rip 10.0.2.1 rport\
$app4_port token "$client4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$client4_token" "$AF_INET" "10.0.2.2"\
"10.0.2.1" "$app4_port" "23" "$server_addr_id" "ns2" "ns1"
# Delete the listener from the server ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl dsf lip 10.0.2.2 lport "$sport" rip 10.0.2.1 rport\
$app4_port token "$client4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$client4_token" "$AF_INET" "10.0.2.2"\
"10.0.2.1" "$app4_port" "23" "$server_addr_id" "ns2" "ns1"
# RM_ADDR from server to client machine
ip netns exec "$ns1" ./pm_nl_ctl rem id $server_addr_id token\
"$server4_token" > /dev/null 2>&1
sleep 0.5
# Attempt to add a listener at dead:beef:2::1:<subflow-port>
ip netns exec "$ns1" ./pm_nl_ctl listen dead:beef:2::1\
$app6_port > /dev/null 2>&1 &
listener_pid=$!
# ADD_ADDR6 from server to client machine reusing the subflow port
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl ann dead:beef:2::1 token "$server6_token" id\
$server_addr_id > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW6 from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl csf lip dead:beef:2::2 lid 23 rip\
dead:beef:2::1 rport $app6_port token "$client6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$client6_token"\
"$AF_INET6" "dead:beef:2::2"\
"dead:beef:2::1" "$app6_port" "23"\
"$server_addr_id" "ns2" "ns1"
# Delete the listener from the server ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW6 from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl dsf lip dead:beef:2::2 lport "$sport" rip\
dead:beef:2::1 rport $app6_port token "$client6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$client6_token" "$AF_INET6" "dead:beef:2::2"\
"dead:beef:2::1" "$app6_port" "23" "$server_addr_id" "ns2" "ns1"
# RM_ADDR6 from server to client machine
ip netns exec "$ns1" ./pm_nl_ctl rem id $server_addr_id token\
"$server6_token" > /dev/null 2>&1
sleep 0.5
# Attempt to add a listener at 10.0.2.1:<new-port>
ip netns exec "$ns1" ./pm_nl_ctl listen 10.0.2.1\
$new4_port > /dev/null 2>&1 &
listener_pid=$!
# ADD_ADDR from server to client machine using a new port
:>"$evts"
ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server4_token" id\
$server_addr_id port $new4_port > /dev/null 2>&1
sleep 0.5
# CREATE_SUBFLOW from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl csf lip 10.0.2.2 lid 23 rip 10.0.2.1 rport\
$new4_port token "$client4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_ESTABLISHED" "$client4_token" "$AF_INET"\
"10.0.2.2" "10.0.2.1" "$new4_port" "23" "$server_addr_id" "ns2" "ns1"
# Delete the listener from the server ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$evts")
# DESTROY_SUBFLOW from client to server machine
:>"$evts"
ip netns exec "$ns2" ./pm_nl_ctl dsf lip 10.0.2.2 lport "$sport" rip 10.0.2.1 rport\
$new4_port token "$client4_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$evts" "$SUB_CLOSED" "$client4_token" "$AF_INET" "10.0.2.2"\
"10.0.2.1" "$new4_port" "23" "$server_addr_id" "ns2" "ns1"
# RM_ADDR from server to client machine
ip netns exec "$ns1" ./pm_nl_ctl rem id $server_addr_id token\
"$server4_token" > /dev/null 2>&1
kill_wait $evts_pid
rm -f "$evts"
}
test_subflows_v4_v6_mix()
{
local client_evts
client_evts=$(mktemp)
# Capture events on the network namespace running the client
:>"$client_evts"
ip netns exec "$ns2" ./pm_nl_ctl events >> "$client_evts" 2>&1 &
evts_pid=$!
sleep 0.5
# Attempt to add a listener at 10.0.2.1:<subflow-port>
ip netns exec "$ns1" ./pm_nl_ctl listen 10.0.2.1\
$app6_port > /dev/null 2>&1 &
local listener_pid=$!
# ADD_ADDR4 from server to client machine reusing the subflow port on
# the established v6 connection
:>"$client_evts"
ip netns exec "$ns1" ./pm_nl_ctl ann 10.0.2.1 token "$server6_token" id\
$server_addr_id dev ns1eth2 > /dev/null 2>&1
stdbuf -o0 -e0 printf "ADD_ADDR4 id:%d 10.0.2.1 (ns1) => ns2, reuse port\t\t" $server_addr_id
sleep 0.5
verify_announce_event "$client_evts" "$ANNOUNCED" "$client6_token" "10.0.2.1"\
"$server_addr_id" "$app6_port"
# CREATE_SUBFLOW from client to server machine
:>"$client_evts"
ip netns exec "$ns2" ./pm_nl_ctl csf lip 10.0.2.2 lid 23 rip 10.0.2.1 rport\
$app6_port token "$client6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$client_evts" "$SUB_ESTABLISHED" "$client6_token"\
"$AF_INET" "10.0.2.2" "10.0.2.1" "$app6_port" "23"\
"$server_addr_id" "ns2" "ns1"
# Delete the listener from the server ns, if one was created
kill_wait $listener_pid
sport=$(sed --unbuffered -n 's/.*\(sport:\)\([[:digit:]]*\).*$/\2/p;q' "$client_evts")
# DESTROY_SUBFLOW from client to server machine
:>"$client_evts"
ip netns exec "$ns2" ./pm_nl_ctl dsf lip 10.0.2.2 lport "$sport" rip 10.0.2.1 rport\
$app6_port token "$client6_token" > /dev/null 2>&1
sleep 0.5
verify_subflow_events "$client_evts" "$SUB_CLOSED" "$client6_token" \
"$AF_INET" "10.0.2.2" "10.0.2.1" "$app6_port" "23"\
"$server_addr_id" "ns2" "ns1"
# RM_ADDR from server to client machine
ip netns exec "$ns1" ./pm_nl_ctl rem id $server_addr_id token\
"$server6_token" > /dev/null 2>&1
sleep 0.5
kill_wait $evts_pid
rm -f "$client_evts"
}
test_prio()
{
local count
# Send MP_PRIO signal from client to server machine
ip netns exec "$ns2" ./pm_nl_ctl set 10.0.1.2 port "$client4_port" flags backup token "$client4_token" rip 10.0.1.1 rport "$app4_port"
sleep 0.5
# Check TX
stdbuf -o0 -e0 printf "MP_PRIO TX \t"
count=$(ip netns exec "$ns2" nstat -as | grep MPTcpExtMPPrioTx | awk '{print $2}')
[ -z "$count" ] && count=0
if [ $count != 1 ]; then
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
else
stdbuf -o0 -e0 printf "[OK]\n"
fi
# Check RX
stdbuf -o0 -e0 printf "MP_PRIO RX \t"
count=$(ip netns exec "$ns1" nstat -as | grep MPTcpExtMPPrioRx | awk '{print $2}')
[ -z "$count" ] && count=0
if [ $count != 1 ]; then
stdbuf -o0 -e0 printf "[FAIL]\n"
exit 1
else
stdbuf -o0 -e0 printf "[OK]\n"
fi
}
make_connection
make_connection "v6"
test_announce
test_remove
test_subflows
test_subflows_v4_v6_mix
test_prio
exit 0