[PATCH net-next 05/11] selftests: mptcp: add {get,format}_endpoint(s) helpers

From: Matthieu Baerts (NGI0)
Date: Fri Apr 05 2024 - 06:54:06 EST

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From: Geliang Tang <tanggeliang@xxxxxxxxxx>

The output formats of 'ip mptcp' commands are much different from that
of 'pm_nl_ctl' commands.

This patch adds a new helper format_endpoints() to format the outputs of
'ip mptcp' and 'pm_nl_ctl' with 'endpoints' arguments to hide these
differences.

A new helper named get_endpoint() has also been added to show a specific
endpoint identified by the given address ID, similar to mptcp_join.sh's
pm_nl_show_endpoints() helper, but showing all entries.

Use these two helpers in mptcp_join.sh and pm_netlink.sh to replace all
'pm_nl_ctl get' commands and outputs of 'pm_nl_ctl dump/get'.

Suggested-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
Signed-off-by: Geliang Tang <tanggeliang@xxxxxxxxxx>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
---
tools/testing/selftests/net/mptcp/mptcp_join.sh | 32 ++------
tools/testing/selftests/net/mptcp/mptcp_lib.sh | 35 ++++++++
tools/testing/selftests/net/mptcp/pm_netlink.sh | 102 ++++++++++++++----------
3 files changed, 98 insertions(+), 71 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 62fcfeaa3430..d48da81daa06 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -712,12 +712,9 @@ pm_nl_check_endpoint()
local ns=$2
local addr=$3
local _flags=""
- local flags
local _port
- local port
local dev
local _id
- local id

print_check "${msg}"

@@ -725,48 +722,29 @@ pm_nl_check_endpoint()
while [ -n "$1" ]; do
if [ $1 = "flags" ]; then
_flags=$2
- [ -n "$_flags" ]; flags="flags $_flags"
shift
elif [ $1 = "dev" ]; then
- [ -n "$2" ]; dev="dev $2"
+ [ -n "$2" ]; dev="$2"
shift
elif [ $1 = "id" ]; then
_id=$2
- [ -n "$_id" ]; id="id $_id"
shift
elif [ $1 = "port" ]; then
_port=$2
- [ -n "$_port" ]; port=" port $_port"
shift
fi

shift
done

- if [ -z "$id" ]; then
+ if [ -z "${_id}" ]; then
test_fail "bad test - missing endpoint id"
return
fi

- if mptcp_lib_is_ip_mptcp; then
- # get line and trim trailing whitespace
- line=$(ip -n $ns mptcp endpoint show $id)
- line="${line% }"
- # the dump order is: address id flags port dev
- [ -n "$addr" ] && expected_line="$addr"
- expected_line+=" $id"
- [ -n "$_flags" ] && expected_line+=" ${_flags//","/" "}"
- [ -n "$dev" ] && expected_line+=" $dev"
- [ -n "$port" ] && expected_line+=" $port"
- else
- line=$(ip netns exec $ns ./pm_nl_ctl get $_id)
- # the dump order is: id flags dev address port
- expected_line="$id"
- [ -n "$flags" ] && expected_line+=" $flags"
- [ -n "$dev" ] && expected_line+=" $dev"
- [ -n "$addr" ] && expected_line+=" $addr"
- [ -n "$_port" ] && expected_line+=" $_port"
- fi
+ line=$(mptcp_lib_pm_nl_get_endpoint "${ns}" "${_id}")
+ expected_line=$(mptcp_lib_pm_nl_format_endpoints \
+ "${_id},${addr},${_flags//","/" "},${dev},${_port}")
if [ "$line" = "$expected_line" ]; then
print_ok
else
diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
index ca01d949fad8..4fabb0091940 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
@@ -520,3 +520,38 @@ mptcp_lib_set_ip_mptcp() {
mptcp_lib_is_ip_mptcp() {
[ "${MPTCP_LIB_IP_MPTCP}" = "1" ]
}
+
+# format: <id>,<ip>,<flags>,<dev>
+mptcp_lib_pm_nl_format_endpoints() {
+ local entry id ip flags dev port
+
+ for entry in "${@}"; do
+ IFS=, read -r id ip flags dev port <<< "${entry}"
+ if mptcp_lib_is_ip_mptcp; then
+ echo -n "${ip}"
+ [ -n "${port}" ] && echo -n " port ${port}"
+ echo -n " id ${id}"
+ [ -n "${flags}" ] && echo -n " ${flags}"
+ [ -n "${dev}" ] && echo -n " dev ${dev}"
+ echo " " # always a space at the end
+ else
+ echo -n "id ${id}"
+ echo -n " flags ${flags//" "/","}"
+ [ -n "${dev}" ] && echo -n " dev ${dev}"
+ echo -n " ${ip}"
+ [ -n "${port}" ] && echo -n " ${port}"
+ echo ""
+ fi
+ done
+}
+
+mptcp_lib_pm_nl_get_endpoint() {
+ local ns=${1}
+ local id=${2}
+
+ if mptcp_lib_is_ip_mptcp; then
+ ip -n "${ns}" mptcp endpoint show id "${id}"
+ else
+ ip netns exec "${ns}" ./pm_nl_ctl get "${id}"
+ fi
+}
diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testing/selftests/net/mptcp/pm_netlink.sh
index d672d1e5d470..234b88eba0cb 100755
--- a/tools/testing/selftests/net/mptcp/pm_netlink.sh
+++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh
@@ -66,6 +66,15 @@ get_limits() {
fi
}

+format_endpoints() {
+ mptcp_lib_pm_nl_format_endpoints "${@}"
+}
+
+get_endpoint() {
+ # shellcheck disable=SC2317 # invoked indirectly
+ mptcp_lib_pm_nl_get_endpoint "${ns1}" "${@}"
+}
+
check()
{
local cmd="$1"
@@ -97,43 +106,44 @@ fi
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.2 flags subflow dev lo
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.3 flags signal,backup
-check "ip netns exec $ns1 ./pm_nl_ctl get 1" "id 1 flags 10.0.1.1" "simple add/get addr"
+check "get_endpoint 1" "$(format_endpoints "1,10.0.1.1")" "simple add/get addr"

check "ip netns exec $ns1 ./pm_nl_ctl dump" \
-"id 1 flags 10.0.1.1
-id 2 flags subflow dev lo 10.0.1.2
-id 3 flags signal,backup 10.0.1.3" "dump addrs"
+ "$(format_endpoints "1,10.0.1.1" \
+ "2,10.0.1.2,subflow,lo" \
+ "3,10.0.1.3,signal backup")" "dump addrs"

ip netns exec $ns1 ./pm_nl_ctl del 2
-check "ip netns exec $ns1 ./pm_nl_ctl get 2" "" "simple del addr"
+check "get_endpoint 2" "" "simple del addr"
check "ip netns exec $ns1 ./pm_nl_ctl dump" \
-"id 1 flags 10.0.1.1
-id 3 flags signal,backup 10.0.1.3" "dump addrs after del"
+ "$(format_endpoints "1,10.0.1.1" \
+ "3,10.0.1.3,signal backup")" "dump addrs after del"

ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.3 2>/dev/null
-check "ip netns exec $ns1 ./pm_nl_ctl get 4" "" "duplicate addr"
+check "get_endpoint 4" "" "duplicate addr"

ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.4 flags signal
-check "ip netns exec $ns1 ./pm_nl_ctl get 4" "id 4 flags signal 10.0.1.4" "id addr increment"
+check "get_endpoint 4" "$(format_endpoints "4,10.0.1.4,signal")" "id addr increment"

for i in $(seq 5 9); do
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.$i flags signal >/dev/null 2>&1
done
-check "ip netns exec $ns1 ./pm_nl_ctl get 9" "id 9 flags signal 10.0.1.9" "hard addr limit"
-check "ip netns exec $ns1 ./pm_nl_ctl get 10" "" "above hard addr limit"
+check "get_endpoint 9" "$(format_endpoints "9,10.0.1.9,signal")" "hard addr limit"
+check "get_endpoint 10" "" "above hard addr limit"

ip netns exec $ns1 ./pm_nl_ctl del 9
for i in $(seq 10 255); do
ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.9 id $i
ip netns exec $ns1 ./pm_nl_ctl del $i
done
-check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags 10.0.1.1
-id 3 flags signal,backup 10.0.1.3
-id 4 flags signal 10.0.1.4
-id 5 flags signal 10.0.1.5
-id 6 flags signal 10.0.1.6
-id 7 flags signal 10.0.1.7
-id 8 flags signal 10.0.1.8" "id limit"
+check "ip netns exec $ns1 ./pm_nl_ctl dump" \
+ "$(format_endpoints "1,10.0.1.1" \
+ "3,10.0.1.3,signal backup" \
+ "4,10.0.1.4,signal" \
+ "5,10.0.1.5,signal" \
+ "6,10.0.1.6,signal" \
+ "7,10.0.1.7,signal" \
+ "8,10.0.1.8,signal")" "id limit"

ip netns exec $ns1 ./pm_nl_ctl flush
check "ip netns exec $ns1 ./pm_nl_ctl dump" "" "flush addrs"
@@ -156,14 +166,15 @@ ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.5 id 254
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.6
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.7
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.8
-check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags 10.0.1.1
-id 2 flags 10.0.1.2
-id 3 flags 10.0.1.7
-id 4 flags 10.0.1.8
-id 100 flags 10.0.1.3
-id 101 flags 10.0.1.4
-id 254 flags 10.0.1.5
-id 255 flags 10.0.1.6" "set ids"
+check "ip netns exec $ns1 ./pm_nl_ctl dump" \
+ "$(format_endpoints "1,10.0.1.1" \
+ "2,10.0.1.2" \
+ "3,10.0.1.7" \
+ "4,10.0.1.8" \
+ "100,10.0.1.3" \
+ "101,10.0.1.4" \
+ "254,10.0.1.5" \
+ "255,10.0.1.6")" "set ids"

ip netns exec $ns1 ./pm_nl_ctl flush
ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.1
@@ -174,36 +185,39 @@ ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.5 id 253
ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.6
ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.7
ip netns exec $ns1 ./pm_nl_ctl add 10.0.0.8
-check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags 10.0.0.1
-id 2 flags 10.0.0.4
-id 3 flags 10.0.0.6
-id 4 flags 10.0.0.7
-id 5 flags 10.0.0.8
-id 253 flags 10.0.0.5
-id 254 flags 10.0.0.2
-id 255 flags 10.0.0.3" "wrap-around ids"
+check "ip netns exec $ns1 ./pm_nl_ctl dump" \
+ "$(format_endpoints "1,10.0.0.1" \
+ "2,10.0.0.4" \
+ "3,10.0.0.6" \
+ "4,10.0.0.7" \
+ "5,10.0.0.8" \
+ "253,10.0.0.5" \
+ "254,10.0.0.2" \
+ "255,10.0.0.3")" "wrap-around ids"

ip netns exec $ns1 ./pm_nl_ctl flush
ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1 flags subflow
ip netns exec $ns1 ./pm_nl_ctl set 10.0.1.1 flags backup
-check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags \
-subflow,backup 10.0.1.1" "set flags (backup)"
+check "ip netns exec $ns1 ./pm_nl_ctl dump" "$(format_endpoints "1,10.0.1.1,subflow backup")" \
+ "set flags (backup)"
ip netns exec $ns1 ./pm_nl_ctl set 10.0.1.1 flags nobackup
-check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags \
-subflow 10.0.1.1" " (nobackup)"
+check "ip netns exec $ns1 ./pm_nl_ctl dump" "$(format_endpoints "1,10.0.1.1,subflow")" \
+ " (nobackup)"

# fullmesh support has been added later
ip netns exec $ns1 ./pm_nl_ctl set id 1 flags fullmesh 2>/dev/null
if ip netns exec $ns1 ./pm_nl_ctl dump | grep -q "fullmesh" ||
mptcp_lib_expect_all_features; then
- check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags \
-subflow,fullmesh 10.0.1.1" " (fullmesh)"
+ check "ip netns exec $ns1 ./pm_nl_ctl dump" \
+ "$(format_endpoints "1,10.0.1.1,subflow fullmesh")" \
+ " (fullmesh)"
ip netns exec $ns1 ./pm_nl_ctl set id 1 flags nofullmesh
- check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags \
-subflow 10.0.1.1" " (nofullmesh)"
+ check "ip netns exec $ns1 ./pm_nl_ctl dump" "$(format_endpoints "1,10.0.1.1,subflow")" \
+ " (nofullmesh)"
ip netns exec $ns1 ./pm_nl_ctl set id 1 flags backup,fullmesh
- check "ip netns exec $ns1 ./pm_nl_ctl dump" "id 1 flags \
-subflow,backup,fullmesh 10.0.1.1" " (backup,fullmesh)"
+ check "ip netns exec $ns1 ./pm_nl_ctl dump" \
+ "$(format_endpoints "1,10.0.1.1,subflow backup fullmesh")" \
+ " (backup,fullmesh)"
else
for st in fullmesh nofullmesh backup,fullmesh; do
st=" (${st})"

--
2.43.0

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