@@ -1830,6 +1830,28 @@ i40e_status i40e_aq_set_phy_int_mask(struct i40e_hw *hw,
return status;
}
+/**
+ * i40e_aq_set_mac_loopback
+ * @hw: pointer to the HW struct
+ * @ena_lpbk: Enable or Disable loopback
+ * @cmd_details: pointer to command details structure or NULL
+ *
+ * Enable/disable loopback on a given port
+ */
+i40e_status i40e_aq_set_mac_loopback(struct i40e_hw *hw, bool ena_lpbk,
+ struct i40e_asq_cmd_details *cmd_details)
+{
+ struct i40e_aq_desc desc;
+ struct i40e_aqc_set_lb_mode *cmd =
+ (struct i40e_aqc_set_lb_mode *)&desc.params.raw;
+
+ i40e_fill_default_direct_cmd_desc(&desc, i40e_aqc_opc_set_lb_modes);
+ if (ena_lpbk)
+ cmd->lb_mode = cpu_to_le16(I40E_AQ_LB_MAC_LOCAL);
+
+ return i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
+}
+
/**
* i40e_aq_set_phy_debug
* @hw: pointer to the hw struct
@@ -12919,6 +12919,28 @@ static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
}
}
+/**
+ * i40e_set_loopback - turn on/off loopback mode on underlying PF
+ * @vsi: ptr to VSI
+ * @ena: flag to indicate the on/off setting
+ */
+static int i40e_set_loopback(struct i40e_vsi *vsi, bool ena)
+{
+ bool if_running = netif_running(vsi->netdev);
+ int ret;
+
+ if (if_running && !test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
+ i40e_down(vsi);
+
+ ret = i40e_aq_set_mac_loopback(&vsi->back->hw, ena, NULL);
+ if (ret)
+ netdev_err(vsi->netdev, "Failed to toggle loopback state\n");
+ if (if_running)
+ i40e_up(vsi);
+
+ return ret;
+}
+
/**
* i40e_set_features - set the netdev feature flags
* @netdev: ptr to the netdev being adjusted
@@ -12959,6 +12981,10 @@ static int i40e_set_features(struct net_device *netdev,
if (need_reset)
i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
+ if (features & NETIF_F_LOOPBACK)
+ if (i40e_set_loopback(vsi, !!(features & NETIF_F_LOOPBACK)))
+ return -EINVAL;
+
return 0;
}
@@ -13721,7 +13747,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
- netdev->hw_features |= hw_features;
+ netdev->hw_features |= hw_features | NETIF_F_LOOPBACK;
netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
@@ -105,6 +105,9 @@ enum i40e_status_code i40e_aq_set_phy_config(struct i40e_hw *hw,
struct i40e_asq_cmd_details *cmd_details);
enum i40e_status_code i40e_set_fc(struct i40e_hw *hw, u8 *aq_failures,
bool atomic_reset);
+i40e_status i40e_aq_set_mac_loopback(struct i40e_hw *hw,
+ bool ena_lpbk,
+ struct i40e_asq_cmd_details *cmd_details);
i40e_status i40e_aq_set_phy_int_mask(struct i40e_hw *hw, u16 mask,
struct i40e_asq_cmd_details *cmd_details);
i40e_status i40e_aq_clear_pxe_mode(struct i40e_hw *hw,
Add support for NETIF_F_LOOPBACK. This feature can be set via: $ ethtool -K eth0 loopback <on|off> This sets the MAC Tx->Rx loopback. Feature can be useful for local data path tests. Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com> --- drivers/net/ethernet/intel/i40e/i40e_common.c | 22 +++++++++++++++ drivers/net/ethernet/intel/i40e/i40e_main.c | 28 ++++++++++++++++++- .../net/ethernet/intel/i40e/i40e_prototype.h | 3 ++ 3 files changed, 52 insertions(+), 1 deletion(-)