[dpdk-dev] [PATCH 3/6] net/ice/base: add print if DDP/FW don't support QinQ as expected

[Qi Zhang <qi.z.zhang@intel.com>]

Currently if the driver supports QinQ there is no message/information
if the DDP and/or FW don't support QinQ. Add functionality that prints
if the DDP and/or FW don't support QinQ if the driver attempts to
configured DVM. This will make it more obvious to users in the field
that they need to update their DDP and/or FW.

This required a small refactor so some of the existing code could be
shared and used by this new print functionality.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_vlan_mode.c | 72 +++++++++++++++++++++++-----
 1 file changed, 60 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ice/base/ice_vlan_mode.c b/drivers/net/ice/base/ice_vlan_mode.c
index ebb64c68ec..cb896897dd 100644
--- a/drivers/net/ice/base/ice_vlan_mode.c
+++ b/drivers/net/ice/base/ice_vlan_mode.c
@@ -130,18 +130,11 @@ static void ice_cache_vlan_mode(struct ice_hw *hw)
 }
 
 /**
- * ice_is_dvm_supported - check if Double VLAN Mode is supported
- * @hw: pointer to the hardware structure
- *
- * Returns true if Double VLAN Mode (DVM) is supported and false if only Single
- * VLAN Mode (SVM) is supported. In order for DVM to be supported the DDP and
- * firmware must support it, otherwise only SVM is supported. This function
- * should only be called while the global config lock is held and after the
- * package has been successfully downloaded.
+ * ice_pkg_supports_dvm - find out if DDP supports DVM
+ * @hw: pointer to the HW structure
  */
-static bool ice_is_dvm_supported(struct ice_hw *hw)
+static bool ice_pkg_supports_dvm(struct ice_hw *hw)
 {
-	struct ice_aqc_get_vlan_mode get_vlan_mode = { 0 };
 	enum ice_status status;
 	bool pkg_supports_dvm;
 
@@ -152,8 +145,17 @@ static bool ice_is_dvm_supported(struct ice_hw *hw)
 		return false;
 	}
 
-	if (!pkg_supports_dvm)
-		return false;
+	return pkg_supports_dvm;
+}
+
+/**
+ * ice_fw_supports_dvm - find out if FW supports DVM
+ * @hw: pointer to the HW structure
+ */
+static bool ice_fw_supports_dvm(struct ice_hw *hw)
+{
+	struct ice_aqc_get_vlan_mode get_vlan_mode = { 0 };
+	enum ice_status status;
 
 	/* If firmware returns success, then it supports DVM, else it only
 	 * supports SVM
@@ -168,6 +170,31 @@ static bool ice_is_dvm_supported(struct ice_hw *hw)
 	return true;
 }
 
+/**
+ * ice_is_dvm_supported - check if Double VLAN Mode is supported
+ * @hw: pointer to the hardware structure
+ *
+ * Returns true if Double VLAN Mode (DVM) is supported and false if only Single
+ * VLAN Mode (SVM) is supported. In order for DVM to be supported the DDP and
+ * firmware must support it, otherwise only SVM is supported. This function
+ * should only be called while the global config lock is held and after the
+ * package has been successfully downloaded.
+ */
+static bool ice_is_dvm_supported(struct ice_hw *hw)
+{
+	if (!ice_pkg_supports_dvm(hw)) {
+		ice_debug(hw, ICE_DBG_PKG, "DDP doesn't support DVM\n");
+		return false;
+	}
+
+	if (!ice_fw_supports_dvm(hw)) {
+		ice_debug(hw, ICE_DBG_PKG, "FW doesn't support DVM\n");
+		return false;
+	}
+
+	return true;
+}
+
 #define ICE_EXTERNAL_VLAN_ID_FV_IDX			11
 #define ICE_SW_LKUP_VLAN_LOC_LKUP_IDX			1
 #define ICE_SW_LKUP_VLAN_PKT_FLAGS_LKUP_IDX		2
@@ -375,6 +402,27 @@ enum ice_status ice_set_vlan_mode(struct ice_hw *hw)
 	return ice_set_svm(hw);
 }
 
+/**
+ * ice_print_dvm_not_supported - print if DDP and/or FW doesn't support DVM
+ * @hw: pointer to the HW structure
+ *
+ * The purpose of this function is to print that  QinQ is not supported due to
+ * incompatibilty from the DDP and/or FW. This will give a hint to the user to
+ * update one and/or both components if they expect QinQ functionality.
+ */
+static void ice_print_dvm_not_supported(struct ice_hw *hw)
+{
+	bool pkg_supports_dvm = ice_pkg_supports_dvm(hw);
+	bool fw_supports_dvm = ice_fw_supports_dvm(hw);
+
+	if (!fw_supports_dvm && !pkg_supports_dvm)
+		ice_info(hw, "QinQ functionality cannot be enabled on this device. Update your DDP package and NVM to versions that support QinQ.\n");
+	else if (!pkg_supports_dvm)
+		ice_info(hw, "QinQ functionality cannot be enabled on this device. Update your DDP package to a version that supports QinQ.\n");
+	else if (!fw_supports_dvm)
+		ice_info(hw, "QinQ functionality cannot be enabled on this device. Update your NVM to a version that supports QinQ.\n");
+}
+
 /**
  * ice_post_pkg_dwnld_vlan_mode_cfg - configure VLAN mode after DDP download
  * @hw: pointer to the HW structure
-- 
2.26.2