The function simple_if_init() does two things: it creates a VRF, then
moves an interface into this VRF and configures addresses. The latter
comes in handy when adding more interfaces into a VRF later on. The
situation is similar for simple_if_fini().

Therefore split the interface remastering and address de/initialization
logic to a new pair of helpers __simple_if_init() / __simple_if_fini(),
and defer to these helpers from simple_if_init() and simple_if_fini().

Signed-off-by: Petr Machata <pe...@mellanox.com>
Reviewed-by: Ido Schimmel <ido...@mellanox.com>
---
 tools/testing/selftests/net/forwarding/lib.sh | 32 +++++++++++++++++++++------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/lib.sh 
b/tools/testing/selftests/net/forwarding/lib.sh
index f94ea4bafa13..1dfdf14894e2 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -287,6 +287,29 @@ __addr_add_del()
        done
 }
 
+__simple_if_init()
+{
+       local if_name=$1; shift
+       local vrf_name=$1; shift
+       local addrs=("${@}")
+
+       ip link set dev $if_name master $vrf_name
+       ip link set dev $if_name up
+
+       __addr_add_del $if_name add "${addrs[@]}"
+}
+
+__simple_if_fini()
+{
+       local if_name=$1; shift
+       local addrs=("${@}")
+
+       __addr_add_del $if_name del "${addrs[@]}"
+
+       ip link set dev $if_name down
+       ip link set dev $if_name nomaster
+}
+
 simple_if_init()
 {
        local if_name=$1
@@ -298,11 +321,8 @@ simple_if_init()
        array=("${@}")
 
        vrf_create $vrf_name
-       ip link set dev $if_name master $vrf_name
        ip link set dev $vrf_name up
-       ip link set dev $if_name up
-
-       __addr_add_del $if_name add "${array[@]}"
+       __simple_if_init $if_name $vrf_name "${array[@]}"
 }
 
 simple_if_fini()
@@ -315,9 +335,7 @@ simple_if_fini()
        vrf_name=v$if_name
        array=("${@}")
 
-       __addr_add_del $if_name del "${array[@]}"
-
-       ip link set dev $if_name down
+       __simple_if_fini $if_name "${array[@]}"
        vrf_destroy $vrf_name
 }
 
-- 
2.4.11

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