qlcnic: Enhance diagnostic loopback error codes.

o Enhanced the driver to use standard Linux error codes
o Return a unique error code to indicate loopback is in progress

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index b00cf56..aa0e68e 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -950,12 +950,6 @@ struct qlcnic_ipaddr {
 #define QLCNIC_READD_AGE       20
 #define QLCNIC_LB_MAX_FILTERS  64
 #define QLCNIC_LB_BUCKET_SIZE  32
-
-/* QLCNIC Driver Error Code */
-#define QLCNIC_FW_NOT_RESPOND          51
-#define QLCNIC_TEST_IN_PROGRESS                52
-#define QLCNIC_UNDEFINED_ERROR         53
-#define QLCNIC_LB_CABLE_NOT_CONN       54
 #define QLCNIC_ILB_MAX_RCV_LOOP        10
 
 struct qlcnic_filter {

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index 0913c62..cda188d 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -1652,7 +1652,7 @@ int qlcnic_83xx_loopback_test(struct net_device *netdev, u8 mode)
        if (ahw->op_mode == QLCNIC_NON_PRIV_FUNC) {
                netdev_warn(netdev,
                            "Loopback test not supported in non privileged mode\n");
-               return ret;
+               return -ENOTSUPP;
        }
 
        if (test_bit(__QLCNIC_RESETTING, &adapter->state)) {
@@ -1686,13 +1686,13 @@ int qlcnic_83xx_loopback_test(struct net_device *netdev, u8 mode)
                if (test_bit(__QLCNIC_RESETTING, &adapter->state)) {
                        netdev_info(netdev,
                                    "Device is resetting, free LB test resources\n");
-                       ret = -EIO;
+                       ret = -EBUSY;
                        goto free_diag_res;
                }
                if (loop++ > QLC_83XX_LB_WAIT_COUNT) {
                        netdev_info(netdev,
                                    "Firmware didn't sent link up event to loopback request\n");
-                       ret = -QLCNIC_FW_NOT_RESPOND;
+                       ret = -ETIMEDOUT;
                        qlcnic_83xx_clear_lb_mode(adapter, mode);
                        goto free_diag_res;
                }
@@ -1729,6 +1729,15 @@ int qlcnic_83xx_set_lb_mode(struct qlcnic_adapter *adapter, u8 mode)
                return status;
 
        config = ahw->port_config;
+
+       /* Check if port is already in loopback mode */
+       if ((config & QLC_83XX_CFG_LOOPBACK_HSS) ||
+           (config & QLC_83XX_CFG_LOOPBACK_EXT)) {
+               netdev_err(netdev,
+                          "Port already in Loopback mode.\n");
+               return -EINPROGRESS;
+       }
+
        set_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status);
 
        if (mode == QLCNIC_ILB_MODE)
@@ -1756,14 +1765,14 @@ int qlcnic_83xx_set_lb_mode(struct qlcnic_adapter *adapter, u8 mode)
                        netdev_info(netdev,
                                    "Device is resetting, free LB test resources\n");
                        clear_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status);
-                       return -EIO;
+                       return -EBUSY;
                }
                if (loop++ > QLC_83XX_LB_WAIT_COUNT) {
                        netdev_err(netdev,
                                   "Did not receive IDC completion AEN\n");
                        clear_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status);
                        qlcnic_83xx_clear_lb_mode(adapter, mode);
-                       return -EIO;
+                       return -ETIMEDOUT;
                }
        } while (test_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status));
 
@@ -1805,14 +1814,14 @@ int qlcnic_83xx_clear_lb_mode(struct qlcnic_adapter *adapter, u8 mode)
                        netdev_info(netdev,
                                    "Device is resetting, free LB test resources\n");
                        clear_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status);
-                       return -EIO;
+                       return -EBUSY;
                }
 
                if (loop++ > QLC_83XX_LB_WAIT_COUNT) {
                        netdev_err(netdev,
                                   "Did not receive IDC completion AEN\n");
                        clear_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status);
-                       return -EIO;
+                       return -ETIMEDOUT;
                }
        } while (test_bit(QLC_83XX_IDC_COMP_AEN, &ahw->idc.status));
 

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
index 700a463..94a728d 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
@@ -980,9 +980,9 @@ int qlcnic_loopback_test(struct net_device *netdev, u8 mode)
                msleep(500);
                qlcnic_process_rcv_ring_diag(sds_ring);
                if (loop++ > QLCNIC_ILB_MAX_RCV_LOOP) {
-                       netdev_info(netdev, "firmware didnt respond to loopback"
-                               " configure request\n");
-                       ret = -QLCNIC_FW_NOT_RESPOND;
+                       netdev_info(netdev,
+                                   "Firmware didn't sent link up event to loopback request\n");
+                       ret = -ETIMEDOUT;
                        goto free_res;
                } else if (adapter->ahw->diag_cnt) {
                        ret = adapter->ahw->diag_cnt;

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index d3f8797..1994b44 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -919,17 +919,17 @@ static void qlcnic_handle_fw_message(int desc_cnt, int index,
                        break;
                case 1:
                        dev_info(dev, "loopback already in progress\n");
-                       adapter->ahw->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
+                       adapter->ahw->diag_cnt = -EINPROGRESS;
                        break;
                case 2:
                        dev_info(dev, "loopback cable is not connected\n");
-                       adapter->ahw->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
+                       adapter->ahw->diag_cnt = -ENODEV;
                        break;
                default:
                        dev_info(dev,
                                 "loopback configure request failed, err %x\n",
                                 ret);
-                       adapter->ahw->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
+                       adapter->ahw->diag_cnt = -EIO;
                        break;
                }
                break;