qlcnic: add loopback diagnostic test

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / net / qlcnic / qlcnic_ethtool.c

diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index 58c50ed..8da6ec8 100644 (file)
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -66,7 +66,8 @@ static const struct qlcnic_stats qlcnic_gstrings_stats[] = {
 static const char qlcnic_gstrings_test[][ETH_GSTRING_LEN] = {
        "Register_Test_on_offline",
        "Link_Test_on_offline",
-       "Interrupt_Test_offline"
+       "Interrupt_Test_offline",
+       "Loopback_Test_offline"
 };
 
 #define QLCNIC_TEST_LEN        ARRAY_SIZE(qlcnic_gstrings_test)
@@ -614,6 +615,80 @@ static int qlcnic_get_sset_count(struct net_device *dev, int sset)
        }
 }
 
+#define QLC_ILB_PKT_SIZE 64
+
+static void qlcnic_create_loopback_buff(unsigned char *data)
+{
+       unsigned char random_data[] = {0xa8, 0x06, 0x45, 0x00};
+       memset(data, 0x4e, QLC_ILB_PKT_SIZE);
+       memset(data, 0xff, 12);
+       memcpy(data + 12, random_data, sizeof(random_data));
+}
+
+int qlcnic_check_loopback_buff(unsigned char *data)
+{
+       unsigned char buff[QLC_ILB_PKT_SIZE];
+       qlcnic_create_loopback_buff(buff);
+       return memcmp(data, buff, QLC_ILB_PKT_SIZE);
+}
+
+static int qlcnic_do_ilb_test(struct qlcnic_adapter *adapter)
+{
+       struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+       struct qlcnic_host_sds_ring *sds_ring = &recv_ctx->sds_rings[0];
+       struct sk_buff *skb;
+       int i;
+
+       for (i = 0; i < 16; i++) {
+               skb = dev_alloc_skb(QLC_ILB_PKT_SIZE);
+               qlcnic_create_loopback_buff(skb->data);
+               skb_put(skb, QLC_ILB_PKT_SIZE);
+
+               adapter->diag_cnt = 0;
+
+               qlcnic_xmit_frame(skb, adapter->netdev);
+
+               msleep(5);
+
+               qlcnic_process_rcv_ring_diag(sds_ring);
+
+               dev_kfree_skb_any(skb);
+               if (!adapter->diag_cnt)
+                       return -1;
+       }
+       return 0;
+}
+
+static int qlcnic_loopback_test(struct net_device *netdev)
+{
+       struct qlcnic_adapter *adapter = netdev_priv(netdev);
+       int max_sds_rings = adapter->max_sds_rings;
+       int ret;
+
+       if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+               return -EIO;
+
+       ret = qlcnic_diag_alloc_res(netdev, QLCNIC_LOOPBACK_TEST);
+       if (ret)
+               goto clear_it;
+
+       ret = qlcnic_set_ilb_mode(adapter);
+       if (ret)
+               goto done;
+
+       ret = qlcnic_do_ilb_test(adapter);
+
+       qlcnic_clear_ilb_mode(adapter);
+
+done:
+       qlcnic_diag_free_res(netdev, max_sds_rings);
+
+clear_it:
+       adapter->max_sds_rings = max_sds_rings;
+       clear_bit(__QLCNIC_RESETTING, &adapter->state);
+       return ret;
+}
+
 static int qlcnic_irq_test(struct net_device *netdev)
 {
        struct qlcnic_adapter *adapter = netdev_priv(netdev);
@@ -656,6 +731,11 @@ qlcnic_diag_test(struct net_device *dev, struct ethtool_test *eth_test,
                data[2] = qlcnic_irq_test(dev);
                if (data[2])
                        eth_test->flags |= ETH_TEST_FL_FAILED;
+
+               data[3] = qlcnic_loopback_test(dev);
+               if (data[3])
+                       eth_test->flags |= ETH_TEST_FL_FAILED;
+
        }
 
        data[0] = qlcnic_reg_test(dev);