selftests: forwarding: ethtool: Move different_speeds_get() to ethtool_lib

Currently different_speeds_get() is used only by ethtool.sh tests.
The function can be useful for another tests that check ethtool
configurations.

Move the function to ethtool_lib in order to allow other tests to use
it.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/net/forwarding/ethtool.sh

@@ -50,23 +50,6 @@ cleanup()
 	h1_destroy
 }
 
-different_speeds_get()
-{
-	local dev1=$1; shift
-	local dev2=$1; shift
-	local with_mode=$1; shift
-	local adver=$1; shift
-
-	local -a speeds_arr
-
-	speeds_arr=($(common_speeds_get $dev1 $dev2 $with_mode $adver))
-	if [[ ${#speeds_arr[@]} < 2 ]]; then
-		check_err 1 "cannot check different speeds. There are not enough speeds"
-	fi
-
-	echo ${speeds_arr[0]} ${speeds_arr[1]}
-}
-
 same_speeds_autoneg_off()
 {
 	# Check that when each of the reported speeds is forced, the links come

tools/testing/selftests/net/forwarding/ethtool_lib.sh

@@ -67,3 +67,20 @@ common_speeds_get()
 		<(printf '%s\n' "${dev1_speeds[@]}" | sort -u) \
 		<(printf '%s\n' "${dev2_speeds[@]}" | sort -u)
 }
+
+different_speeds_get()
+{
+	local dev1=$1; shift
+	local dev2=$1; shift
+	local with_mode=$1; shift
+	local adver=$1; shift
+
+	local -a speeds_arr
+
+	speeds_arr=($(common_speeds_get $dev1 $dev2 $with_mode $adver))
+	if [[ ${#speeds_arr[@]} < 2 ]]; then
+		check_err 1 "cannot check different speeds. There are not enough speeds"
+	fi
+
+	echo ${speeds_arr[0]} ${speeds_arr[1]}
+}