[LTP] [RFC PATCH v2 3/3] test_net.sh: Add checks for external commands

[Petr Vorel]

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Cc: Alexey Kodanev <alexey.kodanev@oracle.com>
---
Alexey, if you don't ack previous patch please accept at least this one.
As it fixes some real problems (netstat has been removed from
openSUSE/SUSE).
---
 testcases/lib/test_net.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/testcases/lib/test_net.sh b/testcases/lib/test_net.sh
index fa06e0991..ffb646d87 100644
--- a/testcases/lib/test_net.sh
+++ b/testcases/lib/test_net.sh
@@ -472,8 +472,10 @@ tst_netload()
 
 	local sock_cmd=
 	if [ "$type" = "sctp" ]; then
+		tst_check_cmds netstat
 		sock_cmd="netstat -naS | grep $port | grep -q LISTEN"
 	else
+		tst_check_cmds ss
 		sock_cmd="ss -ln$(echo $type | head -c1) | grep -q $port"
 	fi
 
@@ -525,11 +527,14 @@ tst_ping()
 	local dst_addr="${2:-$(tst_ipaddr rhost)}"; shift $(( $# >= 2 ? 2 : 0 ))
 	local msg_sizes="$*"
 	local msg="tst_ping IPv${TST_IPV6:-4} iface $src_iface, msg_size"
+	local cmd="ping$TST_IPV6"
 	local ret=0
 
+	tst_check_cmds $cmd
+
 	# ping cmd use 56 as default message size
 	for size in ${msg_sizes:-"56"}; do
-		ping$TST_IPV6 -I $src_iface -c $PING_MAX $dst_addr \
+		$cmd -I $src_iface -c $PING_MAX $dst_addr \
 			-s $size -i 0 > /dev/null 2>&1
 		ret=$?
 		if [ $ret -eq 0 ]; then
-- 
2.16.1