be2net: Bug fix to config NIC appropriately before loopback test

NIC controller has to be set to an appropriate mode before doing a loopback
test. Test will fail otherwise.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 23 insertions, 14 deletions

diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index 298b92cbd68..da66d15e222 100644
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -118,6 +118,7 @@ static const char et_self_tests[][ETH_GSTRING_LEN] = {
 #define BE_MAC_LOOPBACK 0x0
 #define BE_PHY_LOOPBACK 0x1
 #define BE_ONE_PORT_EXT_LOOPBACK 0x2
+#define BE_NO_LOOPBACK 0xff
 
 static void
 be_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
@@ -489,6 +490,19 @@ err:
         return ret;
 }
 
+static u64 be_loopback_test(struct be_adapter *adapter, u8 loopback_type,
+                                u64 *status)
+{
+        be_cmd_set_loopback(adapter, adapter->port_num,
+                                loopback_type, 1);
+        *status = be_cmd_loopback_test(adapter, adapter->port_num,
+                                loopback_type, 1500,
+                                2, 0xabc);
+        be_cmd_set_loopback(adapter, adapter->port_num,
+                                BE_NO_LOOPBACK, 1);
+        return *status;
+}
+
 static void
 be_self_test(struct net_device *netdev, struct ethtool_test *test, u64 *data)
 {
@@ -497,23 +511,18 @@ be_self_test(struct net_device *netdev, struct ethtool_test *test, u64 *data)
         memset(data, 0, sizeof(u64) * ETHTOOL_TESTS_NUM);
 
         if (test->flags & ETH_TEST_FL_OFFLINE) {
-                data[0] = be_cmd_loopback_test(adapter, adapter->port_num,
-                                                BE_MAC_LOOPBACK, 1500,
-                                                2, 0xabc);
-                if (data[0] != 0)
+                if (be_loopback_test(adapter, BE_MAC_LOOPBACK,
+                                                &data[0]) != 0) {
                         test->flags |= ETH_TEST_FL_FAILED;
-
-                data[1] = be_cmd_loopback_test(adapter, adapter->port_num,
-                                                BE_PHY_LOOPBACK, 1500,
-                                                2, 0xabc);
-                if (data[1] != 0)
+                }
+                if (be_loopback_test(adapter, BE_PHY_LOOPBACK,
+                                                &data[1]) != 0) {
                         test->flags |= ETH_TEST_FL_FAILED;
-
-                data[2] = be_cmd_loopback_test(adapter, adapter->port_num,
-                                                BE_ONE_PORT_EXT_LOOPBACK,
-                                                1500, 2, 0xabc);
-                if (data[2] != 0)
+                }
+                if (be_loopback_test(adapter, BE_ONE_PORT_EXT_LOOPBACK,
+                                                &data[2]) != 0) {
                         test->flags |= ETH_TEST_FL_FAILED;
+                }
 
                 data[3] = be_test_ddr_dma(adapter);
                 if (data[3] != 0)