[PATCH net-next 09/11] selftests: mptcp: add invert argument for chk_rm_nr

[Mat Martineau]

From: Geliang Tang <geliangt...@gmail.com>

Some of the removing testcases used two zeros as arguments for chk_rm_nr
like this: chk_rm_nr 0 0. This doesn't mean that no RM_ADDR has been sent.
It only means that RM_ADDR had been sent in the opposite direction that
chk_rm_nr is checking.

This patch added a new argument invert for chk_rm_nr to allow it can
check the RM_ADDR from the opposite direction.

Signed-off-by: Geliang Tang <geliangt...@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martin...@linux.intel.com>
---
 .../testing/selftests/net/mptcp/mptcp_join.sh | 21 ++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh 
b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 964db9ed544f..15b71ddee615 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -610,11 +610,22 @@ chk_rm_nr()
 {
        local rm_addr_nr=$1
        local rm_subflow_nr=$2
+       local invert=${3:-""}
        local count
        local dump_stats
+       local addr_ns
+       local subflow_ns
+
+       if [ -z $invert ]; then
+               addr_ns=$ns1
+               subflow_ns=$ns2
+       elif [ $invert = "invert" ]; then
+               addr_ns=$ns2
+               subflow_ns=$ns1
+       fi
 
        printf "%-39s %s" " " "rm "
-       count=`ip netns exec $ns1 nstat -as | grep MPTcpExtRmAddr | awk '{print 
$2}'`
+       count=`ip netns exec $addr_ns nstat -as | grep MPTcpExtRmAddr | awk 
'{print $2}'`
        [ -z "$count" ] && count=0
        if [ "$count" != "$rm_addr_nr" ]; then
                echo "[fail] got $count RM_ADDR[s] expected $rm_addr_nr"
@@ -625,7 +636,7 @@ chk_rm_nr()
        fi
 
        echo -n " - sf    "
-       count=`ip netns exec $ns2 nstat -as | grep MPTcpExtRmSubflow | awk 
'{print $2}'`
+       count=`ip netns exec $subflow_ns nstat -as | grep MPTcpExtRmSubflow | 
awk '{print $2}'`
        [ -z "$count" ] && count=0
        if [ "$count" != "$rm_subflow_nr" ]; then
                echo "[fail] got $count RM_SUBFLOW[s] expected $rm_subflow_nr"
@@ -833,7 +844,7 @@ remove_tests()
        run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
        chk_join_nr "remove single address" 1 1 1
        chk_add_nr 1 1
-       chk_rm_nr 0 0
+       chk_rm_nr 1 1 invert
 
        # subflow and signal, remove
        reset
@@ -945,7 +956,7 @@ ipv6_tests()
        run_tests $ns1 $ns2 dead:beef:1::1 0 -1 0 slow
        chk_join_nr "remove single address IPv6" 1 1 1
        chk_add_nr 1 1
-       chk_rm_nr 0 0
+       chk_rm_nr 1 1 invert
 
        # subflow and signal IPv6, remove
        reset
@@ -1088,7 +1099,7 @@ add_addr_ports_tests()
        run_tests $ns1 $ns2 10.0.1.1 0 -1 0 slow
        chk_join_nr "remove single address with port" 1 1 1
        chk_add_nr 1 1 1
-       chk_rm_nr 0 0
+       chk_rm_nr 1 1 invert
 
        # subflow and signal with port, remove
        reset
-- 
2.30.2