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|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
sec=$(date +%s)
rndh=$(printf %x $sec)-$(mktemp -u XXXXXX)
ns="ns1-$rndh"
ksft_skip=4
test_cnt=1
timeout_poll=100
timeout_test=$((timeout_poll * 2 + 1))
ret=0
flush_pids()
{
# mptcp_connect in join mode will sleep a bit before completing,
# give it some time
sleep 1.1
ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGUSR1 &>/dev/null
}
cleanup()
{
ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGKILL &>/dev/null
ip netns del $ns
}
ip -Version > /dev/null 2>&1
if [ $? -ne 0 ];then
echo "SKIP: Could not run test without ip tool"
exit $ksft_skip
fi
ss -h | grep -q MPTCP
if [ $? -ne 0 ];then
echo "SKIP: ss tool does not support MPTCP"
exit $ksft_skip
fi
__chk_nr()
{
local condition="$1"
local expected=$2
local msg nr
shift 2
msg=$*
nr=$(ss -inmHMN $ns | $condition)
printf "%-50s" "$msg"
if [ $nr != $expected ]; then
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
else
echo "[ ok ]"
fi
test_cnt=$((test_cnt+1))
}
chk_msk_nr()
{
__chk_nr "grep -c token:" $*
}
wait_msk_nr()
{
local condition="grep -c token:"
local expected=$1
local timeout=20
local msg nr
local max=0
local i=0
shift 1
msg=$*
while [ $i -lt $timeout ]; do
nr=$(ss -inmHMN $ns | $condition)
[ $nr == $expected ] && break;
[ $nr -gt $max ] && max=$nr
i=$((i + 1))
sleep 1
done
printf "%-50s" "$msg"
if [ $i -ge $timeout ]; then
echo "[ fail ] timeout while expecting $expected max $max last $nr"
ret=$test_cnt
elif [ $nr != $expected ]; then
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
else
echo "[ ok ]"
fi
test_cnt=$((test_cnt+1))
}
chk_msk_fallback_nr()
{
__chk_nr "grep -c fallback" $*
}
chk_msk_remote_key_nr()
{
__chk_nr "grep -c remote_key" $*
}
__chk_listen()
{
local filter="$1"
local expected=$2
shift 2
msg=$*
nr=$(ss -N $ns -Ml "$filter" | grep -c LISTEN)
printf "%-50s" "$msg"
if [ $nr != $expected ]; then
echo "[ fail ] expected $expected found $nr"
ret=$test_cnt
else
echo "[ ok ]"
fi
}
chk_msk_listen()
{
lport=$1
local msg="check for listen socket"
# destination port search should always return empty list
__chk_listen "dport $lport" 0 "listen match for dport $lport"
# should return 'our' mptcp listen socket
__chk_listen "sport $lport" 1 "listen match for sport $lport"
__chk_listen "src inet:0.0.0.0:$lport" 1 "listen match for saddr and sport"
__chk_listen "" 1 "all listen sockets"
nr=$(ss -Ml $filter | wc -l)
}
# $1: ns, $2: port
wait_local_port_listen()
{
local listener_ns="${1}"
local port="${2}"
local port_hex i
port_hex="$(printf "%04X" "${port}")"
for i in $(seq 10); do
ip netns exec "${listener_ns}" cat /proc/net/tcp | \
awk "BEGIN {rc=1} {if (\$2 ~ /:${port_hex}\$/ && \$4 ~ /0A/) {rc=0; exit}} END {exit rc}" &&
break
sleep 0.1
done
}
wait_connected()
{
local listener_ns="${1}"
local port="${2}"
local port_hex i
port_hex="$(printf "%04X" "${port}")"
for i in $(seq 10); do
ip netns exec ${listener_ns} grep -q " 0100007F:${port_hex} " /proc/net/tcp && break
sleep 0.1
done
}
trap cleanup EXIT
ip netns add $ns
ip -n $ns link set dev lo up
echo "a" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p 10000 -l -t ${timeout_poll} -w 20 \
0.0.0.0 >/dev/null &
wait_local_port_listen $ns 10000
chk_msk_nr 0 "no msk on netns creation"
chk_msk_listen 10000
echo "b" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p 10000 -r 0 -t ${timeout_poll} -w 20 \
127.0.0.1 >/dev/null &
wait_connected $ns 10000
chk_msk_nr 2 "after MPC handshake "
chk_msk_remote_key_nr 2 "....chk remote_key"
chk_msk_fallback_nr 0 "....chk no fallback"
flush_pids
echo "a" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p 10001 -l -s TCP -t ${timeout_poll} -w 20 \
0.0.0.0 >/dev/null &
wait_local_port_listen $ns 10001
echo "b" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p 10001 -r 0 -t ${timeout_poll} -w 20 \
127.0.0.1 >/dev/null &
wait_connected $ns 10001
chk_msk_fallback_nr 1 "check fallback"
flush_pids
NR_CLIENTS=100
for I in `seq 1 $NR_CLIENTS`; do
echo "a" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p $((I+10001)) -l -w 20 \
-t ${timeout_poll} 0.0.0.0 >/dev/null &
done
wait_local_port_listen $ns $((NR_CLIENTS + 10001))
for I in `seq 1 $NR_CLIENTS`; do
echo "b" | \
timeout ${timeout_test} \
ip netns exec $ns \
./mptcp_connect -p $((I+10001)) -w 20 \
-t ${timeout_poll} 127.0.0.1 >/dev/null &
done
wait_msk_nr $((NR_CLIENTS*2)) "many msk socket present"
flush_pids
exit $ret
|
