net/i40e: workaround performance degradation

[dpdk.git] / drivers / net / i40e / i40e_ethdev.c

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 9585c67..e06e0a2 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -10014,6 +10014,60 @@ i40e_pctype_to_flowtype(const struct i40e_adapter *adapter,
 #define I40E_GL_SWR_PM_UP_THR_SF_VALUE   0x06060606
 #define I40E_GL_SWR_PM_UP_THR            0x269FBC
 
+/*
+ * GL_SWR_PM_UP_THR:
+ * The value is not impacted from the link speed, its value is set according
+ * to the total number of ports for a better pipe-monitor configuration.
+ */
+static bool
+i40e_get_swr_pm_cfg(struct i40e_hw *hw, uint32_t *value)
+{
+#define I40E_GL_SWR_PM_EF_DEVICE(dev) \
+               .device_id = (dev),   \
+               .val = I40E_GL_SWR_PM_UP_THR_EF_VALUE
+
+#define I40E_GL_SWR_PM_SF_DEVICE(dev) \
+               .device_id = (dev),   \
+               .val = I40E_GL_SWR_PM_UP_THR_SF_VALUE
+
+       static const struct {
+               uint16_t device_id;
+               uint32_t val;
+       } swr_pm_table[] = {
+               { I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_SFP_XL710) },
+               { I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_KX_C) },
+               { I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_10G_BASE_T) },
+               { I40E_GL_SWR_PM_EF_DEVICE(I40E_DEV_ID_10G_BASE_T4) },
+
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_KX_B) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_QSFP_A) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_QSFP_B) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_20G_KR2) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_20G_KR2_A) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_25G_B) },
+               { I40E_GL_SWR_PM_SF_DEVICE(I40E_DEV_ID_25G_SFP28) },
+       };
+       uint32_t i;
+
+       if (value == NULL) {
+               PMD_DRV_LOG(ERR, "value is NULL");
+               return false;
+       }
+
+       for (i = 0; i < RTE_DIM(swr_pm_table); i++) {
+               if (hw->device_id == swr_pm_table[i].device_id) {
+                       *value = swr_pm_table[i].val;
+
+                       PMD_DRV_LOG(DEBUG, "Device 0x%x with GL_SWR_PM_UP_THR "
+                                   "value - 0x%08x",
+                                   hw->device_id, *value);
+                       return true;
+               }
+       }
+
+       return false;
+}
+
 static int
 i40e_dev_sync_phy_type(struct i40e_hw *hw)
 {
@@ -10078,13 +10132,16 @@ i40e_configure_registers(struct i40e_hw *hw)
                }
 
                if (reg_table[i].addr == I40E_GL_SWR_PM_UP_THR) {
-                       if (I40E_PHY_TYPE_SUPPORT_40G(hw->phy.phy_types) || /* For XL710 */
-                           I40E_PHY_TYPE_SUPPORT_25G(hw->phy.phy_types)) /* For XXV710 */
-                               reg_table[i].val =
-                                       I40E_GL_SWR_PM_UP_THR_SF_VALUE;
-                       else /* For X710 */
-                               reg_table[i].val =
-                                       I40E_GL_SWR_PM_UP_THR_EF_VALUE;
+                       uint32_t cfg_val;
+
+                       if (!i40e_get_swr_pm_cfg(hw, &cfg_val)) {
+                               PMD_DRV_LOG(DEBUG, "Device 0x%x skips "
+                                           "GL_SWR_PM_UP_THR value fixup",
+                                           hw->device_id);
+                               continue;
+                       }
+
+                       reg_table[i].val = cfg_val;
                }
 
                ret = i40e_aq_debug_read_register(hw, reg_table[i].addr,