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-rwxr-xr-xtools/testing/selftests/net/mptcp/mptcp_join.sh366
1 files changed, 311 insertions, 55 deletions
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 108aeeb84ef1..a4762c49a878 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -420,12 +420,17 @@ reset_with_fail()
fi
}
+start_events()
+{
+ mptcp_lib_events "${ns1}" "${evts_ns1}" evts_ns1_pid
+ mptcp_lib_events "${ns2}" "${evts_ns2}" evts_ns2_pid
+}
+
reset_with_events()
{
reset "${1}" || return 1
- mptcp_lib_events "${ns1}" "${evts_ns1}" evts_ns1_pid
- mptcp_lib_events "${ns2}" "${evts_ns2}" evts_ns2_pid
+ start_events
}
reset_with_tcp_filter()
@@ -436,9 +441,10 @@ reset_with_tcp_filter()
local ns="${!1}"
local src="${2}"
local target="${3}"
+ local chain="${4:-INPUT}"
if ! ip netns exec "${ns}" ${iptables} \
- -A INPUT \
+ -A "${chain}" \
-s "${src}" \
-p tcp \
-j "${target}"; then
@@ -661,7 +667,7 @@ pm_nl_check_endpoint()
done
if [ -z "${id}" ]; then
- test_fail "bad test - missing endpoint id"
+ fail_test "bad test - missing endpoint id"
return
fi
@@ -1111,26 +1117,26 @@ chk_csum_nr()
print_check "sum"
count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtDataCsumErr")
- if [ "$count" != "$csum_ns1" ]; then
+ if [ -n "$count" ] && [ "$count" != "$csum_ns1" ]; then
extra_msg+=" ns1=$count"
fi
if [ -z "$count" ]; then
print_skip
elif { [ "$count" != $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 0 ]; } ||
- { [ "$count" -lt $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 1 ]; }; then
+ { [ "$count" -lt $csum_ns1 ] && [ $allow_multi_errors_ns1 -eq 1 ]; }; then
fail_test "got $count data checksum error[s] expected $csum_ns1"
else
print_ok
fi
print_check "csum"
count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtDataCsumErr")
- if [ "$count" != "$csum_ns2" ]; then
+ if [ -n "$count" ] && [ "$count" != "$csum_ns2" ]; then
extra_msg+=" ns2=$count"
fi
if [ -z "$count" ]; then
print_skip
elif { [ "$count" != $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 0 ]; } ||
- { [ "$count" -lt $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 1 ]; }; then
+ { [ "$count" -lt $csum_ns2 ] && [ $allow_multi_errors_ns2 -eq 1 ]; }; then
fail_test "got $count data checksum error[s] expected $csum_ns2"
else
print_ok
@@ -1168,13 +1174,13 @@ chk_fail_nr()
print_check "ftx"
count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPFailTx")
- if [ "$count" != "$fail_tx" ]; then
+ if [ -n "$count" ] && [ "$count" != "$fail_tx" ]; then
extra_msg+=",tx=$count"
fi
if [ -z "$count" ]; then
print_skip
elif { [ "$count" != "$fail_tx" ] && [ $allow_tx_lost -eq 0 ]; } ||
- { [ "$count" -gt "$fail_tx" ] && [ $allow_tx_lost -eq 1 ]; }; then
+ { [ "$count" -gt "$fail_tx" ] && [ $allow_tx_lost -eq 1 ]; }; then
fail_test "got $count MP_FAIL[s] TX expected $fail_tx"
else
print_ok
@@ -1182,13 +1188,13 @@ chk_fail_nr()
print_check "failrx"
count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtMPFailRx")
- if [ "$count" != "$fail_rx" ]; then
+ if [ -n "$count" ] && [ "$count" != "$fail_rx" ]; then
extra_msg+=",rx=$count"
fi
if [ -z "$count" ]; then
print_skip
elif { [ "$count" != "$fail_rx" ] && [ $allow_rx_lost -eq 0 ]; } ||
- { [ "$count" -gt "$fail_rx" ] && [ $allow_rx_lost -eq 1 ]; }; then
+ { [ "$count" -gt "$fail_rx" ] && [ $allow_rx_lost -eq 1 ]; }; then
fail_test "got $count MP_FAIL[s] RX expected $fail_rx"
else
print_ok
@@ -1415,18 +1421,28 @@ chk_add_nr()
local add_nr=$1
local echo_nr=$2
local port_nr=${3:-0}
- local syn_nr=${4:-$port_nr}
- local syn_ack_nr=${5:-$port_nr}
- local ack_nr=${6:-$port_nr}
- local mis_syn_nr=${7:-0}
- local mis_ack_nr=${8:-0}
+ local ns_invert=${4:-""}
+ local syn_nr=$port_nr
+ local syn_ack_nr=$port_nr
+ local ack_nr=$port_nr
+ local mis_syn_nr=0
+ local mis_ack_nr=0
+ local ns_tx=$ns1
+ local ns_rx=$ns2
+ local extra_msg=""
local count
local timeout
- timeout=$(ip netns exec $ns1 sysctl -n net.mptcp.add_addr_timeout)
+ if [[ $ns_invert = "invert" ]]; then
+ ns_tx=$ns2
+ ns_rx=$ns1
+ extra_msg="invert"
+ fi
+
+ timeout=$(ip netns exec ${ns_tx} sysctl -n net.mptcp.add_addr_timeout)
print_check "add"
- count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtAddAddr")
+ count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtAddAddr")
if [ -z "$count" ]; then
print_skip
# if the test configured a short timeout tolerate greater then expected
@@ -1438,7 +1454,7 @@ chk_add_nr()
fi
print_check "echo"
- count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtEchoAdd")
+ count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtEchoAdd")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$echo_nr" ]; then
@@ -1449,7 +1465,7 @@ chk_add_nr()
if [ $port_nr -gt 0 ]; then
print_check "pt"
- count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtPortAdd")
+ count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtPortAdd")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$port_nr" ]; then
@@ -1459,7 +1475,7 @@ chk_add_nr()
fi
print_check "syn"
- count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortSynRx")
+ count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortSynRx")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$syn_nr" ]; then
@@ -1470,7 +1486,7 @@ chk_add_nr()
fi
print_check "synack"
- count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtMPJoinPortSynAckRx")
+ count=$(mptcp_lib_get_counter ${ns_rx} "MPTcpExtMPJoinPortSynAckRx")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$syn_ack_nr" ]; then
@@ -1481,7 +1497,7 @@ chk_add_nr()
fi
print_check "ack"
- count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinPortAckRx")
+ count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMPJoinPortAckRx")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$ack_nr" ]; then
@@ -1492,7 +1508,7 @@ chk_add_nr()
fi
print_check "syn"
- count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortSynRx")
+ count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortSynRx")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$mis_syn_nr" ]; then
@@ -1503,7 +1519,7 @@ chk_add_nr()
fi
print_check "ack"
- count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMismatchPortAckRx")
+ count=$(mptcp_lib_get_counter ${ns_tx} "MPTcpExtMismatchPortAckRx")
if [ -z "$count" ]; then
print_skip
elif [ "$count" != "$mis_ack_nr" ]; then
@@ -1513,6 +1529,8 @@ chk_add_nr()
print_ok
fi
fi
+
+ print_info "$extra_msg"
}
chk_add_tx_nr()
@@ -1634,6 +1652,8 @@ chk_prio_nr()
{
local mp_prio_nr_tx=$1
local mp_prio_nr_rx=$2
+ local mpj_syn=$3
+ local mpj_syn_ack=$4
local count
print_check "ptx"
@@ -1655,6 +1675,26 @@ chk_prio_nr()
else
print_ok
fi
+
+ print_check "syn backup"
+ count=$(mptcp_lib_get_counter ${ns1} "MPTcpExtMPJoinSynBackupRx")
+ if [ -z "$count" ]; then
+ print_skip
+ elif [ "$count" != "$mpj_syn" ]; then
+ fail_test "got $count JOIN[s] syn with Backup expected $mpj_syn"
+ else
+ print_ok
+ fi
+
+ print_check "synack backup"
+ count=$(mptcp_lib_get_counter ${ns2} "MPTcpExtMPJoinSynAckBackupRx")
+ if [ -z "$count" ]; then
+ print_skip
+ elif [ "$count" != "$mpj_syn_ack" ]; then
+ fail_test "got $count JOIN[s] synack with Backup expected $mpj_syn_ack"
+ else
+ print_ok
+ fi
}
chk_subflow_nr()
@@ -1955,6 +1995,21 @@ signal_address_tests()
chk_add_nr 1 1
fi
+ # uncommon: subflow and signal flags on the same endpoint
+ # or because the user wrongly picked both, but still expects the client
+ # to create additional subflows
+ if reset "subflow and signal together"; then
+ pm_nl_set_limits $ns1 0 2
+ pm_nl_set_limits $ns2 0 2
+ pm_nl_add_endpoint $ns2 10.0.3.2 flags signal,subflow
+ run_tests $ns1 $ns2 10.0.1.1
+ chk_join_nr 1 1 1
+ chk_add_nr 1 1 0 invert # only initiated by ns2
+ chk_add_nr 0 0 0 # none initiated by ns1
+ chk_rst_nr 0 0 invert # no RST sent by the client
+ chk_rst_nr 0 0 # no RST sent by the server
+ fi
+
# accept and use add_addr with additional subflows
if reset "multiple subflows and signal"; then
pm_nl_set_limits $ns1 0 3
@@ -2612,33 +2667,46 @@ backup_tests()
sflags=nobackup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 1 1 1
- chk_prio_nr 0 1
+ chk_prio_nr 0 1 1 0
fi
# single address, backup
if reset "single address, backup" &&
continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
pm_nl_set_limits $ns1 0 1
+ pm_nl_add_endpoint $ns1 10.0.2.1 flags signal,backup
+ pm_nl_set_limits $ns2 1 1
+ sflags=nobackup speed=slow \
+ run_tests $ns1 $ns2 10.0.1.1
+ chk_join_nr 1 1 1
+ chk_add_nr 1 1
+ chk_prio_nr 1 0 0 1
+ fi
+
+ # single address, switch to backup
+ if reset "single address, switch to backup" &&
+ continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+ pm_nl_set_limits $ns1 0 1
pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
pm_nl_set_limits $ns2 1 1
sflags=backup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 1 1 1
chk_add_nr 1 1
- chk_prio_nr 1 1
+ chk_prio_nr 1 1 0 0
fi
# single address with port, backup
if reset "single address with port, backup" &&
continue_if mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
pm_nl_set_limits $ns1 0 1
- pm_nl_add_endpoint $ns1 10.0.2.1 flags signal port 10100
+ pm_nl_add_endpoint $ns1 10.0.2.1 flags signal,backup port 10100
pm_nl_set_limits $ns2 1 1
- sflags=backup speed=slow \
+ sflags=nobackup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 1 1 1
chk_add_nr 1 1
- chk_prio_nr 1 1
+ chk_prio_nr 1 0 0 1
fi
if reset "mpc backup" &&
@@ -2647,17 +2715,26 @@ backup_tests()
speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 0 0 0
- chk_prio_nr 0 1
+ chk_prio_nr 0 1 0 0
fi
if reset "mpc backup both sides" &&
continue_if mptcp_lib_kallsyms_doesnt_have "T mptcp_subflow_send_ack$"; then
- pm_nl_add_endpoint $ns1 10.0.1.1 flags subflow,backup
+ pm_nl_set_limits $ns1 0 2
+ pm_nl_set_limits $ns2 1 2
+ pm_nl_add_endpoint $ns1 10.0.1.1 flags signal,backup
pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow,backup
+
+ # 10.0.2.2 (non-backup) -> 10.0.1.1 (backup)
+ pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow
+ # 10.0.1.2 (backup) -> 10.0.2.1 (non-backup)
+ pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+ ip -net "$ns2" route add 10.0.2.1 via 10.0.1.1 dev ns2eth1 # force this path
+
speed=slow \
run_tests $ns1 $ns2 10.0.1.1
- chk_join_nr 0 0 0
- chk_prio_nr 1 1
+ chk_join_nr 2 2 2
+ chk_prio_nr 1 1 1 1
fi
if reset "mpc switch to backup" &&
@@ -2666,7 +2743,7 @@ backup_tests()
sflags=backup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 0 0 0
- chk_prio_nr 0 1
+ chk_prio_nr 0 1 0 0
fi
if reset "mpc switch to backup both sides" &&
@@ -2676,7 +2753,7 @@ backup_tests()
sflags=backup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 0 0 0
- chk_prio_nr 1 1
+ chk_prio_nr 1 1 0 0
fi
}
@@ -2987,6 +3064,7 @@ fullmesh_tests()
pm_nl_set_limits $ns1 1 3
pm_nl_set_limits $ns2 1 3
pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
+ pm_nl_add_endpoint $ns2 10.0.1.2 flags subflow,fullmesh
fullmesh=1 speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 3 3 3
@@ -3053,7 +3131,7 @@ fullmesh_tests()
addr_nr_ns2=1 sflags=backup,fullmesh speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 2 2 2
- chk_prio_nr 0 1
+ chk_prio_nr 0 1 1 0
chk_rm_nr 0 1
fi
@@ -3066,7 +3144,7 @@ fullmesh_tests()
sflags=nobackup,nofullmesh speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 2 2 2
- chk_prio_nr 0 1
+ chk_prio_nr 0 1 1 0
chk_rm_nr 0 1
fi
}
@@ -3260,6 +3338,36 @@ userspace_pm_chk_get_addr()
fi
}
+# $1: ns ; $2: event type ; $3: count
+chk_evt_nr()
+{
+ local ns=${1}
+ local evt_name="${2}"
+ local exp="${3}"
+
+ local evts="${evts_ns1}"
+ local evt="${!evt_name}"
+ local count
+
+ evt_name="${evt_name:16}" # without MPTCP_LIB_EVENT_
+ [ "${ns}" == "ns2" ] && evts="${evts_ns2}"
+
+ print_check "event ${ns} ${evt_name} (${exp})"
+
+ if [[ "${evt_name}" = "LISTENER_"* ]] &&
+ ! mptcp_lib_kallsyms_has "mptcp_event_pm_listener$"; then
+ print_skip "event not supported"
+ return
+ fi
+
+ count=$(grep -cw "type:${evt}" "${evts}")
+ if [ "${count}" != "${exp}" ]; then
+ fail_test "got ${count} events, expected ${exp}"
+ else
+ print_ok
+ fi
+}
+
userspace_tests()
{
# userspace pm type prevents add_addr
@@ -3318,7 +3426,7 @@ userspace_tests()
sflags=backup speed=slow \
run_tests $ns1 $ns2 10.0.1.1
chk_join_nr 1 1 0
- chk_prio_nr 0 0
+ chk_prio_nr 0 0 0 0
fi
# userspace pm type prevents rm_addr
@@ -3356,14 +3464,12 @@ userspace_tests()
"signal"
userspace_pm_chk_get_addr "${ns1}" "10" "id 10 flags signal 10.0.2.1"
userspace_pm_chk_get_addr "${ns1}" "20" "id 20 flags signal 10.0.3.1"
- userspace_pm_rm_addr $ns1 10
userspace_pm_rm_sf $ns1 "::ffff:10.0.2.1" $MPTCP_LIB_EVENT_SUB_ESTABLISHED
userspace_pm_chk_dump_addr "${ns1}" \
- "id 20 flags signal 10.0.3.1" "after rm_addr 10"
+ "id 20 flags signal 10.0.3.1" "after rm_sf 10"
userspace_pm_rm_addr $ns1 20
- userspace_pm_rm_sf $ns1 10.0.3.1 $MPTCP_LIB_EVENT_SUB_ESTABLISHED
userspace_pm_chk_dump_addr "${ns1}" "" "after rm_addr 20"
- chk_rm_nr 2 2 invert
+ chk_rm_nr 1 1 invert
chk_mptcp_info subflows 0 subflows 0
chk_subflows_total 1 1
kill_events_pids
@@ -3387,12 +3493,11 @@ userspace_tests()
"id 20 flags subflow 10.0.3.2" \
"subflow"
userspace_pm_chk_get_addr "${ns2}" "20" "id 20 flags subflow 10.0.3.2"
- userspace_pm_rm_addr $ns2 20
userspace_pm_rm_sf $ns2 10.0.3.2 $MPTCP_LIB_EVENT_SUB_ESTABLISHED
userspace_pm_chk_dump_addr "${ns2}" \
"" \
- "after rm_addr 20"
- chk_rm_nr 1 1
+ "after rm_sf 20"
+ chk_rm_nr 0 1
chk_mptcp_info subflows 0 subflows 0
chk_subflows_total 1 1
kill_events_pids
@@ -3500,31 +3605,182 @@ endpoint_tests()
mptcp_lib_kill_wait $tests_pid
fi
- if reset "delete and re-add" &&
+ if reset_with_tcp_filter "delete and re-add" ns2 10.0.3.2 REJECT OUTPUT &&
mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
- pm_nl_set_limits $ns1 1 1
- pm_nl_set_limits $ns2 1 1
+ start_events
+ pm_nl_set_limits $ns1 0 3
+ pm_nl_set_limits $ns2 0 3
+ pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1 flags subflow
pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
- test_linkfail=4 speed=20 \
+ test_linkfail=4 speed=5 \
run_tests $ns1 $ns2 10.0.1.1 &
local tests_pid=$!
wait_mpj $ns2
pm_nl_check_endpoint "creation" \
$ns2 10.0.2.2 id 2 flags subflow dev ns2eth2
- chk_subflow_nr "before delete" 2
+ chk_subflow_nr "before delete id 2" 2
chk_mptcp_info subflows 1 subflows 1
pm_nl_del_endpoint $ns2 2 10.0.2.2
sleep 0.5
- chk_subflow_nr "after delete" 1
+ chk_subflow_nr "after delete id 2" 1
chk_mptcp_info subflows 0 subflows 0
- pm_nl_add_endpoint $ns2 10.0.2.2 dev ns2eth2 flags subflow
+ pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
wait_mpj $ns2
- chk_subflow_nr "after re-add" 2
+ chk_subflow_nr "after re-add id 2" 2
chk_mptcp_info subflows 1 subflows 1
+
+ pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
+ wait_attempt_fail $ns2
+ chk_subflow_nr "after new reject" 2
+ chk_mptcp_info subflows 1 subflows 1
+
+ ip netns exec "${ns2}" ${iptables} -D OUTPUT -s "10.0.3.2" -p tcp -j REJECT
+ pm_nl_del_endpoint $ns2 3 10.0.3.2
+ pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
+ wait_mpj $ns2
+ chk_subflow_nr "after no reject" 3
+ chk_mptcp_info subflows 2 subflows 2
+
+ local i
+ for i in $(seq 3); do
+ pm_nl_del_endpoint $ns2 1 10.0.1.2
+ sleep 0.5
+ chk_subflow_nr "after delete id 0 ($i)" 2
+ chk_mptcp_info subflows 2 subflows 2 # only decr for additional sf
+
+ pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1 flags subflow
+ wait_mpj $ns2
+ chk_subflow_nr "after re-add id 0 ($i)" 3
+ chk_mptcp_info subflows 3 subflows 3
+ done
+
+ mptcp_lib_kill_wait $tests_pid
+
+ kill_events_pids
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_LISTENER_CREATED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_CREATED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_ESTABLISHED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_ANNOUNCED 0
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_REMOVED 4
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_SUB_ESTABLISHED 6
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_SUB_CLOSED 4
+
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_CREATED 1
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_ESTABLISHED 1
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_ANNOUNCED 0
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_REMOVED 0
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_SUB_ESTABLISHED 6
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_SUB_CLOSED 5 # one has been closed before estab
+
+ chk_join_nr 6 6 6
+ chk_rm_nr 4 4
+ fi
+
+ # remove and re-add
+ if reset_with_events "delete re-add signal" &&
+ mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+ pm_nl_set_limits $ns1 0 3
+ pm_nl_set_limits $ns2 3 3
+ pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
+ # broadcast IP: no packet for this address will be received on ns1
+ pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
+ pm_nl_add_endpoint $ns1 10.0.1.1 id 42 flags signal
+ test_linkfail=4 speed=5 \
+ run_tests $ns1 $ns2 10.0.1.1 &
+ local tests_pid=$!
+
+ wait_mpj $ns2
+ pm_nl_check_endpoint "creation" \
+ $ns1 10.0.2.1 id 1 flags signal
+ chk_subflow_nr "before delete" 2
+ chk_mptcp_info subflows 1 subflows 1
+
+ pm_nl_del_endpoint $ns1 1 10.0.2.1
+ pm_nl_del_endpoint $ns1 2 224.0.0.1
+ sleep 0.5
+ chk_subflow_nr "after delete" 1
+ chk_mptcp_info subflows 0 subflows 0
+
+ pm_nl_add_endpoint $ns1 10.0.2.1 id 1 flags signal
+ pm_nl_add_endpoint $ns1 10.0.3.1 id 2 flags signal
+ wait_mpj $ns2
+ chk_subflow_nr "after re-add" 3
+ chk_mptcp_info subflows 2 subflows 2
+
+ pm_nl_del_endpoint $ns1 42 10.0.1.1
+ sleep 0.5
+ chk_subflow_nr "after delete ID 0" 2
+ chk_mptcp_info subflows 2 subflows 2
+
+ pm_nl_add_endpoint $ns1 10.0.1.1 id 99 flags signal
+ wait_mpj $ns2
+ chk_subflow_nr "after re-add ID 0" 3
+ chk_mptcp_info subflows 3 subflows 3
+
+ pm_nl_del_endpoint $ns1 99 10.0.1.1
+ sleep 0.5
+ chk_subflow_nr "after re-delete ID 0" 2
+ chk_mptcp_info subflows 2 subflows 2
+
+ pm_nl_add_endpoint $ns1 10.0.1.1 id 88 flags signal
+ wait_mpj $ns2
+ chk_subflow_nr "after re-re-add ID 0" 3
+ chk_mptcp_info subflows 3 subflows 3
mptcp_lib_kill_wait $tests_pid
+
+ kill_events_pids
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_LISTENER_CREATED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_CREATED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_ESTABLISHED 1
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_ANNOUNCED 0
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_REMOVED 0
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_SUB_ESTABLISHED 5
+ chk_evt_nr ns1 MPTCP_LIB_EVENT_SUB_CLOSED 3
+
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_CREATED 1
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_ESTABLISHED 1
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_ANNOUNCED 6
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_REMOVED 4
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_SUB_ESTABLISHED 5
+ chk_evt_nr ns2 MPTCP_LIB_EVENT_SUB_CLOSED 3
+
+ chk_join_nr 5 5 5
+ chk_add_nr 6 6
+ chk_rm_nr 4 3 invert
+ fi
+
+ # flush and re-add
+ if reset_with_tcp_filter "flush re-add" ns2 10.0.3.2 REJECT OUTPUT &&
+ mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
+ pm_nl_set_limits $ns1 0 2
+ pm_nl_set_limits $ns2 1 2
+ # broadcast IP: no packet for this address will be received on ns1
+ pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
+ pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
+ test_linkfail=4 speed=20 \
+ run_tests $ns1 $ns2 10.0.1.1 &
+ local tests_pid=$!
+
+ wait_attempt_fail $ns2
+ chk_subflow_nr "before flush" 1
+ chk_mptcp_info subflows 0 subflows 0
+
+ pm_nl_flush_endpoint $ns2
+ pm_nl_flush_endpoint $ns1
+ wait_rm_addr $ns2 0
+ ip netns exec "${ns2}" ${iptables} -D OUTPUT -s "10.0.3.2" -p tcp -j REJECT
+ pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
+ wait_mpj $ns2
+ pm_nl_add_endpoint $ns1 10.0.3.1 id 2 flags signal
+ wait_mpj $ns2
+ mptcp_lib_kill_wait $tests_pid
+
+ chk_join_nr 2 2 2
+ chk_add_nr 2 2
+ chk_rm_nr 1 0 invert
fi
}