selftests: forwarding: lib: Move smcrouted helpers here

router_multicast.sh has several helpers for work with smcrouted. Extract
them to lib.sh so that other selftests can use them as well. Convert the
helpers to defer in the process, because that simplifies the interface
quite a bit. Therefore have router_multicast.sh invoke
defer_scopes_cleanup() in its cleanup() function.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/410411c1a81225ce6e44542289b9c3ec21e5786c.1750113335.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 508f3c7..2538473 100644 (file)
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -37,6 +37,7 @@ declare -A NETIFS=(
 : "${TEAMD:=teamd}"
 : "${MCD:=smcrouted}"
 : "${MC_CLI:=smcroutectl}"
+: "${MCD_TABLE_NAME:=selftests}"
 
 # Constants for netdevice bring-up:
 # Default time in seconds to wait for an interface to come up before giving up
@@ -1757,6 +1758,38 @@ mc_send()
                msend -g $groups -I $if_name -c 1 > /dev/null 2>&1
 }
 
+adf_mcd_start()
+{
+       local table_name="$MCD_TABLE_NAME"
+       local smcroutedir
+       local pid
+       local i
+
+       check_command "$MCD" || return 1
+       check_command "$MC_CLI" || return 1
+
+       smcroutedir=$(mktemp -d)
+       defer rm -rf "$smcroutedir"
+
+       for ((i = 1; i <= NUM_NETIFS; ++i)); do
+               echo "phyint ${NETIFS[p$i]} enable" >> \
+                       "$smcroutedir/$table_name.conf"
+       done
+
+       "$MCD" -N -I "$table_name" -f "$smcroutedir/$table_name.conf" \
+               -P "$smcroutedir/$table_name.pid"
+       busywait "$BUSYWAIT_TIMEOUT" test -e "$smcroutedir/$table_name.pid"
+       pid=$(cat "$smcroutedir/$table_name.pid")
+       defer kill_process "$pid"
+}
+
+mc_cli()
+{
+       local table_name="$MCD_TABLE_NAME"
+
+        "$MC_CLI" -I "$table_name" "$@"
+}
+
 start_ip_monitor()
 {
        local mtype=$1; shift

diff --git a/tools/testing/selftests/net/forwarding/router_multicast.sh b/tools/testing/selftests/net/forwarding/router_multicast.sh
index 5a58b1e..83e52ab 100755 (executable)
--- a/tools/testing/selftests/net/forwarding/router_multicast.sh
+++ b/tools/testing/selftests/net/forwarding/router_multicast.sh
@@ -33,10 +33,6 @@ NUM_NETIFS=6
 source lib.sh
 source tc_common.sh
 
-require_command $MCD
-require_command $MC_CLI
-table_name=selftests
-
 h1_create()
 {
        simple_if_init $h1 198.51.100.2/28 2001:db8:1::2/64
@@ -149,25 +145,6 @@ router_destroy()
        ip link set dev $rp1 down
 }
 
-start_mcd()
-{
-       SMCROUTEDIR="$(mktemp -d)"
-
-       for ((i = 1; i <= $NUM_NETIFS; ++i)); do
-               echo "phyint ${NETIFS[p$i]} enable" >> \
-                       $SMCROUTEDIR/$table_name.conf
-       done
-
-       $MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \
-               -P $SMCROUTEDIR/$table_name.pid
-}
-
-kill_mcd()
-{
-       pkill $MCD
-       rm -rf $SMCROUTEDIR
-}
-
 setup_prepare()
 {
        h1=${NETIFS[p1]}
@@ -179,7 +156,7 @@ setup_prepare()
        rp3=${NETIFS[p5]}
        h3=${NETIFS[p6]}
 
-       start_mcd
+       adf_mcd_start || exit "$EXIT_STATUS"
 
        vrf_prepare
 
@@ -206,7 +183,7 @@ cleanup()
 
        vrf_cleanup
 
-       kill_mcd
+       defer_scopes_cleanup
 }
 
 create_mcast_sg()
@@ -214,9 +191,9 @@ create_mcast_sg()
        local if_name=$1; shift
        local s_addr=$1; shift
        local mcast=$1; shift
-       local dest_ifs=${@}
+       local dest_ifs=("${@}")
 
-       $MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs
+       mc_cli add "$if_name" "$s_addr" "$mcast" "${dest_ifs[@]}"
 }
 
 delete_mcast_sg()
@@ -224,9 +201,9 @@ delete_mcast_sg()
        local if_name=$1; shift
        local s_addr=$1; shift
        local mcast=$1; shift
-       local dest_ifs=${@}
+       local dest_ifs=("${@}")
 
-        $MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs
+        mc_cli remove "$if_name" "$s_addr" "$mcast" "${dest_ifs[@]}"
 }
 
 mcast_v4()