Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-05-29

This series contains updates to ice driver only.

Bruce cleans up white space issues and fixes complaints about using
bitop assignments using operands of different sizes.

Anirudh cleans up code that is no longer needed now that the firmware
supports the functionality.  Adds support for ethtool selftestto the ice
driver, which includes testing link, interrupts, eeprom, registers and
packet loopback.  Also, cleaned up duplicate code.

Tony implements support for toggling receive VLAN filter via ethtool.

Brett bumps up the minimum receive descriptor count per queue to resolve
dropped packets.  Refactored the interrupt tracking for the ice driver
to resolve issues seen with the co-existence of features and SR-IOV, so
instead of having a hardware IRQ tracker and a software IRQ tracker,
simply use one tracker.  Also adds a helper function to trigger software
interrupts.

Mitch changes how Malicious Driver Detection (MDD) events are handled,
to ensure all VFs checked for MDD events and just log the event instead
of disabling the VF, which was preventing proper release of resources if
the VF is rebooted or the VF driver reloaded.

Dave cleans up a redundant call to register LLDP MIB change events.

Dan adds support to retrieve the current setting of firmware logging
from the hardware to properly initialize the hardware structure.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

16 files changed, 1129 insertions, 276 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index b5990ba0ee4c..c1e4dd7357b4 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -46,13 +46,20 @@ extern const char ice_drv_ver[];
 #define ICE_REQ_DESC_MULTIPLE	32
 #define ICE_MIN_NUM_DESC	ICE_REQ_DESC_MULTIPLE
 #define ICE_MAX_NUM_DESC	8160
-/* set default number of Rx/Tx descriptors to the minimum between
- * ICE_MAX_NUM_DESC and the number of descriptors to fill up an entire page
+#define ICE_DFLT_MIN_RX_DESC	512
+/* if the default number of Rx descriptors between ICE_MAX_NUM_DESC and the
+ * number of descriptors to fill up an entire page is greater than or equal to
+ * ICE_DFLT_MIN_RX_DESC set it based on page size, otherwise set it to
+ * ICE_DFLT_MIN_RX_DESC
+ */
+#define ICE_DFLT_NUM_RX_DESC \
+	min_t(u16, ICE_MAX_NUM_DESC, \
+	      max_t(u16, ALIGN(PAGE_SIZE / sizeof(union ice_32byte_rx_desc), \
+			       ICE_REQ_DESC_MULTIPLE), \
+		    ICE_DFLT_MIN_RX_DESC))
+/* set default number of Tx descriptors to the minimum between ICE_MAX_NUM_DESC
+ * and the number of descriptors to fill up an entire page
  */
-#define ICE_DFLT_NUM_RX_DESC	min_t(u16, ICE_MAX_NUM_DESC, \
-				      ALIGN(PAGE_SIZE / \
-					    sizeof(union ice_32byte_rx_desc), \
-					    ICE_REQ_DESC_MULTIPLE))
 #define ICE_DFLT_NUM_TX_DESC	min_t(u16, ICE_MAX_NUM_DESC, \
 				      ALIGN(PAGE_SIZE / \
 					    sizeof(struct ice_tx_desc), \
@@ -160,7 +167,7 @@ struct ice_tc_cfg {
 
 struct ice_res_tracker {
 	u16 num_entries;
-	u16 search_hint;
+	u16 end;
 	u16 list[1];
 };
 
@@ -182,6 +189,7 @@ struct ice_sw {
 };
 
 enum ice_state {
+	__ICE_TESTING,
 	__ICE_DOWN,
 	__ICE_NEEDS_RESTART,
 	__ICE_PREPARED_FOR_RESET,	/* set by driver when prepared */
@@ -244,8 +252,7 @@ struct ice_vsi {
 	u32 rx_buf_failed;
 	u32 rx_page_failed;
 	int num_q_vectors;
-	int sw_base_vector;		/* Irq base for OS reserved vectors */
-	int hw_base_vector;		/* HW (absolute) index of a vector */
+	int base_vector;		/* IRQ base for OS reserved vectors */
 	enum ice_vsi_type type;
 	u16 vsi_num;			/* HW (absolute) index of this VSI */
 	u16 idx;			/* software index in pf->vsi[] */
@@ -340,10 +347,12 @@ struct ice_pf {
 
 	/* OS reserved IRQ details */
 	struct msix_entry *msix_entries;
-	struct ice_res_tracker *sw_irq_tracker;
-
-	/* HW reserved Interrupts for this PF */
-	struct ice_res_tracker *hw_irq_tracker;
+	struct ice_res_tracker *irq_tracker;
+	/* First MSIX vector used by SR-IOV VFs. Calculated by subtracting the
+	 * number of MSIX vectors needed for all SR-IOV VFs from the number of
+	 * MSIX vectors allowed on this PF.
+	 */
+	u16 sriov_base_vector;
 
 	struct ice_vsi **vsi;		/* VSIs created by the driver */
 	struct ice_sw *first_sw;	/* first switch created by firmware */
@@ -365,10 +374,8 @@ struct ice_pf {
 	struct mutex sw_mutex;		/* lock for protecting VSI alloc flow */
 	u32 msg_enable;
 	u32 hw_csum_rx_error;
-	u32 sw_oicr_idx;	/* Other interrupt cause SW vector index */
+	u32 oicr_idx;		/* Other interrupt cause MSIX vector index */
 	u32 num_avail_sw_msix;	/* remaining MSIX SW vectors left unclaimed */
-	u32 hw_oicr_idx;	/* Other interrupt cause vector HW index */
-	u32 num_avail_hw_msix;	/* remaining HW MSIX vectors left unclaimed */
 	u32 num_lan_msix;	/* Total MSIX vectors for base driver */
 	u16 num_lan_tx;		/* num LAN Tx queues setup */
 	u16 num_lan_rx;		/* num LAN Rx queues setup */
@@ -392,6 +399,7 @@ struct ice_pf {
 	unsigned long tx_timeout_last_recovery;
 	u32 tx_timeout_recovery_level;
 	char int_name[ICE_INT_NAME_STR_LEN];
+	u32 sw_int_count;
 };
 
 struct ice_netdev_priv {
@@ -409,7 +417,7 @@ ice_irq_dynamic_ena(struct ice_hw *hw, struct ice_vsi *vsi,
 		    struct ice_q_vector *q_vector)
 {
 	u32 vector = (vsi && q_vector) ? q_vector->reg_idx :
-				((struct ice_pf *)hw->back)->hw_oicr_idx;
+				((struct ice_pf *)hw->back)->oicr_idx;
 	int itr = ICE_ITR_NONE;
 	u32 val;
 
@@ -444,9 +452,13 @@ ice_find_vsi_by_type(struct ice_pf *pf, enum ice_vsi_type type)
 	return NULL;
 }
 
+int ice_vsi_setup_tx_rings(struct ice_vsi *vsi);
+int ice_vsi_setup_rx_rings(struct ice_vsi *vsi);
 void ice_set_ethtool_ops(struct net_device *netdev);
 int ice_up(struct ice_vsi *vsi);
 int ice_down(struct ice_vsi *vsi);
+int ice_vsi_cfg(struct ice_vsi *vsi);
+struct ice_vsi *ice_lb_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi);
 int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
 int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
 void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size);
@@ -455,5 +467,7 @@ void ice_print_link_msg(struct ice_vsi *vsi, bool isup);
 int ice_pf_ena_all_vsi(struct ice_pf *pf, bool locked);
 void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked);
 #endif /* CONFIG_DCB */
+int ice_open(struct net_device *netdev);
+int ice_stop(struct net_device *netdev);
 
 #endif /* _ICE_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 6ef083002f5b..8680ee2ffa1b 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1112,6 +1112,14 @@ struct ice_aqc_set_event_mask {
 	u8	reserved1[6];
 };
 
+/* Set MAC Loopback command (direct 0x0620) */
+struct ice_aqc_set_mac_lb {
+	u8 lb_mode;
+#define ICE_AQ_MAC_LB_EN		BIT(0)
+#define ICE_AQ_MAC_LB_OSC_CLK		BIT(1)
+	u8 reserved[15];
+};
+
 /* Set Port Identification LED (direct, 0x06E9) */
 struct ice_aqc_set_port_id_led {
 	u8 lport_num;
@@ -1145,6 +1153,17 @@ struct ice_aqc_nvm {
 	__le32 addr_low;
 };
 
+/* NVM Checksum Command (direct, 0x0706) */
+struct ice_aqc_nvm_checksum {
+	u8 flags;
+#define ICE_AQC_NVM_CHECKSUM_VERIFY	BIT(0)
+#define ICE_AQC_NVM_CHECKSUM_RECALC	BIT(1)
+	u8 rsvd;
+	__le16 checksum; /* Used only by response */
+#define ICE_AQC_NVM_CHECKSUM_CORRECT	0xBABA
+	u8 rsvd2[12];
+};
+
 /**
  * Send to PF command (indirect 0x0801) ID is only used by PF
  *
@@ -1539,6 +1558,7 @@ struct ice_aq_desc {
 		struct ice_aqc_query_txsched_res query_sched_res;
 		struct ice_aqc_query_port_ets port_ets;
 		struct ice_aqc_nvm nvm;
+		struct ice_aqc_nvm_checksum nvm_checksum;
 		struct ice_aqc_pf_vf_msg virt;
 		struct ice_aqc_lldp_get_mib lldp_get_mib;
 		struct ice_aqc_lldp_set_mib_change lldp_set_event;
@@ -1554,6 +1574,7 @@ struct ice_aq_desc {
 		struct ice_aqc_add_update_free_vsi_resp add_update_free_vsi_res;
 		struct ice_aqc_fw_logging fw_logging;
 		struct ice_aqc_get_clear_fw_log get_clear_fw_log;
+		struct ice_aqc_set_mac_lb set_mac_lb;
 		struct ice_aqc_alloc_free_res_cmd sw_res_ctrl;
 		struct ice_aqc_set_event_mask set_event_mask;
 		struct ice_aqc_get_link_status get_link_status;
@@ -1642,10 +1663,12 @@ enum ice_adminq_opc {
 	ice_aqc_opc_restart_an				= 0x0605,
 	ice_aqc_opc_get_link_status			= 0x0607,
 	ice_aqc_opc_set_event_mask			= 0x0613,
+	ice_aqc_opc_set_mac_lb				= 0x0620,
 	ice_aqc_opc_set_port_id_led			= 0x06E9,
 
 	/* NVM commands */
 	ice_aqc_opc_nvm_read				= 0x0701,
+	ice_aqc_opc_nvm_checksum			= 0x0706,
 
 	/* PF/VF mailbox commands */
 	ice_mbx_opc_send_msg_to_pf			= 0x0801,
@@ -1671,6 +1694,7 @@ enum ice_adminq_opc {
 
 	/* debug commands */
 	ice_aqc_opc_fw_logging				= 0xFF09,
+	ice_aqc_opc_fw_logging_info			= 0xFF10,
 };
 
 #endif /* _ICE_ADMINQ_CMD_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 91f3f82b43a6..16c694a1b076 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -51,9 +51,6 @@ static enum ice_status ice_set_mac_type(struct ice_hw *hw)
  */
 void ice_dev_onetime_setup(struct ice_hw *hw)
 {
-	/* configure Rx - set non pxe mode */
-	wr32(hw, GLLAN_RCTL_0, 0x1);
-
 #define MBX_PF_VT_PFALLOC	0x00231E80
 	/* set VFs per PF */
 	wr32(hw, MBX_PF_VT_PFALLOC, rd32(hw, PF_VT_PFALLOC_HIF));
@@ -476,6 +473,49 @@ static void ice_cleanup_fltr_mgmt_struct(struct ice_hw *hw)
 	ICE_FW_LOG_DESC_SIZE(ICE_AQC_FW_LOG_ID_MAX)
 
 /**
+ * ice_get_fw_log_cfg - get FW logging configuration
+ * @hw: pointer to the HW struct
+ */
+static enum ice_status ice_get_fw_log_cfg(struct ice_hw *hw)
+{
+	struct ice_aqc_fw_logging_data *config;
+	struct ice_aq_desc desc;
+	enum ice_status status;
+	u16 size;
+
+	size = ICE_FW_LOG_DESC_SIZE_MAX;
+	config = devm_kzalloc(ice_hw_to_dev(hw), size, GFP_KERNEL);
+	if (!config)
+		return ICE_ERR_NO_MEMORY;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_fw_logging_info);
+
+	desc.flags |= cpu_to_le16(ICE_AQ_FLAG_BUF);
+	desc.flags |= cpu_to_le16(ICE_AQ_FLAG_RD);
+
+	status = ice_aq_send_cmd(hw, &desc, config, size, NULL);
+	if (!status) {
+		u16 i;
+
+		/* Save fw logging information into the hw structure */
+		for (i = 0; i < ICE_AQC_FW_LOG_ID_MAX; i++) {
+			u16 v, m, flgs;
+
+			v = le16_to_cpu(config->entry[i]);
+			m = (v & ICE_AQC_FW_LOG_ID_M) >> ICE_AQC_FW_LOG_ID_S;
+			flgs = (v & ICE_AQC_FW_LOG_EN_M) >> ICE_AQC_FW_LOG_EN_S;
+
+			if (m < ICE_AQC_FW_LOG_ID_MAX)
+				hw->fw_log.evnts[m].cur = flgs;
+		}
+	}
+
+	devm_kfree(ice_hw_to_dev(hw), config);
+
+	return status;
+}
+
+/**
  * ice_cfg_fw_log - configure FW logging
  * @hw: pointer to the HW struct
  * @enable: enable certain FW logging events if true, disable all if false
@@ -529,6 +569,11 @@ static enum ice_status ice_cfg_fw_log(struct ice_hw *hw, bool enable)
 	    (!hw->fw_log.actv_evnts || !ice_check_sq_alive(hw, &hw->adminq)))
 		return 0;
 
+	/* Get current FW log settings */
+	status = ice_get_fw_log_cfg(hw);
+	if (status)
+		return status;
+
 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_fw_logging);
 	cmd = &desc.params.fw_logging;
 
@@ -2173,6 +2218,29 @@ ice_aq_set_event_mask(struct ice_hw *hw, u8 port_num, u16 mask,
 }
 
 /**
+ * ice_aq_set_mac_loopback
+ * @hw: pointer to the HW struct
+ * @ena_lpbk: Enable or Disable loopback
+ * @cd: pointer to command details structure or NULL
+ *
+ * Enable/disable loopback on a given port
+ */
+enum ice_status
+ice_aq_set_mac_loopback(struct ice_hw *hw, bool ena_lpbk, struct ice_sq_cd *cd)
+{
+	struct ice_aqc_set_mac_lb *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.set_mac_lb;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_mac_lb);
+	if (ena_lpbk)
+		cmd->lb_mode = ICE_AQ_MAC_LB_EN;
+
+	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+}
+
+/**
  * ice_aq_set_port_id_led
  * @pi: pointer to the port information
  * @is_orig_mode: is this LED set to original mode (by the net-list)
@@ -2928,7 +2996,6 @@ ice_dis_vsi_txq(struct ice_port_info *pi, u16 vsi_handle, u8 tc, u8 num_queues,
 	if (!pi || pi->port_state != ICE_SCHED_PORT_STATE_READY)
 		return ICE_ERR_CFG;
 
-
 	if (!num_queues) {
 		/* if queue is disabled already yet the disable queue command
 		 * has to be sent to complete the VF reset, then call
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index f1ddebf45231..9773d7b2e9c9 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -9,6 +9,8 @@
 #include "ice_switch.h"
 #include <linux/avf/virtchnl.h>
 
+enum ice_status ice_nvm_validate_checksum(struct ice_hw *hw);
+
 void
 ice_debug_cq(struct ice_hw *hw, u32 mask, void *desc, void *buf, u16 buf_len);
 enum ice_status ice_init_hw(struct ice_hw *hw);
@@ -95,6 +97,9 @@ enum ice_status
 ice_aq_set_event_mask(struct ice_hw *hw, u8 port_num, u16 mask,
 		      struct ice_sq_cd *cd);
 enum ice_status
+ice_aq_set_mac_loopback(struct ice_hw *hw, bool ena_lpbk, struct ice_sq_cd *cd);
+
+enum ice_status
 ice_aq_set_port_id_led(struct ice_port_info *pi, bool is_orig_mode,
 		       struct ice_sq_cd *cd);
 
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 1214325eb80b..9dde6dd78643 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -61,6 +61,24 @@ static const struct ice_stats ice_gstrings_vsi_stats[] = {
 	ICE_VSI_STAT("tx_linearize", tx_linearize),
 };
 
+enum ice_ethtool_test_id {
+	ICE_ETH_TEST_REG = 0,
+	ICE_ETH_TEST_EEPROM,
+	ICE_ETH_TEST_INTR,
+	ICE_ETH_TEST_LOOP,
+	ICE_ETH_TEST_LINK,
+};
+
+static const char ice_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Register test  (offline)",
+	"EEPROM test    (offline)",
+	"Interrupt test (offline)",
+	"Loopback test  (offline)",
+	"Link test   (on/offline)",
+};
+
+#define ICE_TEST_LEN (sizeof(ice_gstrings_test) / ETH_GSTRING_LEN)
+
 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
  * but they aren't. This device is capable of supporting multiple
  * VSIs/netdevs on a single PF. The NETDEV_STATs are for individual
@@ -120,6 +138,9 @@ static const u32 ice_regs_dump_list[] = {
 	QINT_RQCTL(0),
 	PFINT_OICR_ENA,
 	QRX_ITR(0),
+	PF0INT_ITR_0(0),
+	PF0INT_ITR_1(0),
+	PF0INT_ITR_2(0),
 };
 
 struct ice_priv_flag {
@@ -278,6 +299,571 @@ out:
 	return ret;
 }
 
+/**
+ * ice_active_vfs - check if there are any active VFs
+ * @pf: board private structure
+ *
+ * Returns true if an active VF is found, otherwise returns false
+ */
+static bool ice_active_vfs(struct ice_pf *pf)
+{
+	struct ice_vf *vf = pf->vf;
+	int i;
+
+	for (i = 0; i < pf->num_alloc_vfs; i++, vf++)
+		if (test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
+			return true;
+	return false;
+}
+
+/**
+ * ice_link_test - perform a link test on a given net_device
+ * @netdev: network interface device structure
+ *
+ * This function performs one of the self-tests required by ethtool.
+ * Returns 0 on success, non-zero on failure.
+ */
+static u64 ice_link_test(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	enum ice_status status;
+	bool link_up = false;
+
+	netdev_info(netdev, "link test\n");
+	status = ice_get_link_status(np->vsi->port_info, &link_up);
+	if (status) {
+		netdev_err(netdev, "link query error, status = %d\n", status);
+		return 1;
+	}
+
+	if (!link_up)
+		return 2;
+
+	return 0;
+}
+
+/**
+ * ice_eeprom_test - perform an EEPROM test on a given net_device
+ * @netdev: network interface device structure
+ *
+ * This function performs one of the self-tests required by ethtool.
+ * Returns 0 on success, non-zero on failure.
+ */
+static u64 ice_eeprom_test(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_pf *pf = np->vsi->back;
+
+	netdev_info(netdev, "EEPROM test\n");
+	return !!(ice_nvm_validate_checksum(&pf->hw));
+}
+
+/**
+ * ice_reg_pattern_test
+ * @hw: pointer to the HW struct
+ * @reg: reg to be tested
+ * @mask: bits to be touched
+ */
+static int ice_reg_pattern_test(struct ice_hw *hw, u32 reg, u32 mask)
+{
+	struct ice_pf *pf = (struct ice_pf *)hw->back;
+	static const u32 patterns[] = {
+		0x5A5A5A5A, 0xA5A5A5A5,
+		0x00000000, 0xFFFFFFFF
+	};
+	u32 val, orig_val;
+	int i;
+
+	orig_val = rd32(hw, reg);
+	for (i = 0; i < ARRAY_SIZE(patterns); ++i) {
+		u32 pattern = patterns[i] & mask;
+
+		wr32(hw, reg, pattern);
+		val = rd32(hw, reg);
+		if (val == pattern)
+			continue;
+		dev_err(&pf->pdev->dev,
+			"%s: reg pattern test failed - reg 0x%08x pat 0x%08x val 0x%08x\n"
+			, __func__, reg, pattern, val);
+		return 1;
+	}
+
+	wr32(hw, reg, orig_val);
+	val = rd32(hw, reg);
+	if (val != orig_val) {
+		dev_err(&pf->pdev->dev,
+			"%s: reg restore test failed - reg 0x%08x orig 0x%08x val 0x%08x\n"
+			, __func__, reg, orig_val, val);
+		return 1;
+	}
+
+	return 0;
+}
+
+/**
+ * ice_reg_test - perform a register test on a given net_device
+ * @netdev: network interface device structure
+ *
+ * This function performs one of the self-tests required by ethtool.
+ * Returns 0 on success, non-zero on failure.
+ */
+static u64 ice_reg_test(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_hw *hw = np->vsi->port_info->hw;
+	u32 int_elements = hw->func_caps.common_cap.num_msix_vectors ?
+		hw->func_caps.common_cap.num_msix_vectors - 1 : 1;
+	struct ice_diag_reg_test_info {
+		u32 address;
+		u32 mask;
+		u32 elem_num;
+		u32 elem_size;
+	} ice_reg_list[] = {
+		{GLINT_ITR(0, 0), 0x00000fff, int_elements,
+			GLINT_ITR(0, 1) - GLINT_ITR(0, 0)},
+		{GLINT_ITR(1, 0), 0x00000fff, int_elements,
+			GLINT_ITR(1, 1) - GLINT_ITR(1, 0)},
+		{GLINT_ITR(0, 0), 0x00000fff, int_elements,
+			GLINT_ITR(2, 1) - GLINT_ITR(2, 0)},
+		{GLINT_CTL, 0xffff0001, 1, 0}
+	};
+	int i;
+
+	netdev_dbg(netdev, "Register test\n");
+	for (i = 0; i < ARRAY_SIZE(ice_reg_list); ++i) {
+		u32 j;
+
+		for (j = 0; j < ice_reg_list[i].elem_num; ++j) {
+			u32 mask = ice_reg_list[i].mask;
+			u32 reg = ice_reg_list[i].address +
+				(j * ice_reg_list[i].elem_size);
+
+			/* bail on failure (non-zero return) */
+			if (ice_reg_pattern_test(hw, reg, mask))
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * ice_lbtest_prepare_rings - configure Tx/Rx test rings
+ * @vsi: pointer to the VSI structure
+ *
+ * Function configures rings of a VSI for loopback test without
+ * enabling interrupts or informing the kernel about new queues.
+ *
+ * Returns 0 on success, negative on failure.
+ */
+static int ice_lbtest_prepare_rings(struct ice_vsi *vsi)
+{
+	int status;
+
+	status = ice_vsi_setup_tx_rings(vsi);
+	if (status)
+		goto err_setup_tx_ring;
+
+	status = ice_vsi_setup_rx_rings(vsi);
+	if (status)
+		goto err_setup_rx_ring;
+
+	status = ice_vsi_cfg(vsi);
+	if (status)
+		goto err_setup_rx_ring;
+
+	status = ice_vsi_start_rx_rings(vsi);
+	if (status)
+		goto err_start_rx_ring;
+
+	return status;
+
+err_start_rx_ring:
+	ice_vsi_free_rx_rings(vsi);
+err_setup_rx_ring:
+	ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
+err_setup_tx_ring:
+	ice_vsi_free_tx_rings(vsi);
+
+	return status;
+}
+
+/**
+ * ice_lbtest_disable_rings - disable Tx/Rx test rings after loopback test
+ * @vsi: pointer to the VSI structure
+ *
+ * Function stops and frees VSI rings after a loopback test.
+ * Returns 0 on success, negative on failure.
+ */
+static int ice_lbtest_disable_rings(struct ice_vsi *vsi)
+{
+	int status;
+
+	status = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
+	if (status)
+		netdev_err(vsi->netdev, "Failed to stop Tx rings, VSI %d error %d\n",
+			   vsi->vsi_num, status);
+
+	status = ice_vsi_stop_rx_rings(vsi);
+	if (status)
+		netdev_err(vsi->netdev, "Failed to stop Rx rings, VSI %d error %d\n",
+			   vsi->vsi_num, status);
+
+	ice_vsi_free_tx_rings(vsi);
+	ice_vsi_free_rx_rings(vsi);
+
+	return status;
+}
+
+/**
+ * ice_lbtest_create_frame - create test packet
+ * @pf: pointer to the PF structure
+ * @ret_data: allocated frame buffer
+ * @size: size of the packet data
+ *
+ * Function allocates a frame with a test pattern on specific offsets.
+ * Returns 0 on success, non-zero on failure.
+ */
+static int ice_lbtest_create_frame(struct ice_pf *pf, u8 **ret_data, u16 size)
+{
+	u8 *data;
+
+	if (!pf)
+		return -EINVAL;
+
+	data = devm_kzalloc(&pf->pdev->dev, size, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	/* Since the ethernet test frame should always be at least
+	 * 64 bytes long, fill some octets in the payload with test data.
+	 */
+	memset(data, 0xFF, size);
+	data[32] = 0xDE;
+	data[42] = 0xAD;
+	data[44] = 0xBE;
+	data[46] = 0xEF;
+
+	*ret_data = data;
+
+	return 0;
+}
+
+/**
+ * ice_lbtest_check_frame - verify received loopback frame
+ * @frame: pointer to the raw packet data
+ *
+ * Function verifies received test frame with a pattern.
+ * Returns true if frame matches the pattern, false otherwise.
+ */
+static bool ice_lbtest_check_frame(u8 *frame)
+{
+	/* Validate bytes of a frame under offsets chosen earlier */
+	if (frame[32] == 0xDE &&
+	    frame[42] == 0xAD &&
+	    frame[44] == 0xBE &&
+	    frame[46] == 0xEF &&
+	    frame[48] == 0xFF)
+		return true;
+
+	return false;
+}
+
+/**
+ * ice_diag_send - send test frames to the test ring
+ * @tx_ring: pointer to the transmit ring
+ * @data: pointer to the raw packet data
+ * @size: size of the packet to send
+ *
+ * Function sends loopback packets on a test Tx ring.
+ */
+static int ice_diag_send(struct ice_ring *tx_ring, u8 *data, u16 size)
+{
+	struct ice_tx_desc *tx_desc;
+	struct ice_tx_buf *tx_buf;
+	dma_addr_t dma;
+	u64 td_cmd;
+
+	tx_desc = ICE_TX_DESC(tx_ring, tx_ring->next_to_use);
+	tx_buf = &tx_ring->tx_buf[tx_ring->next_to_use];
+
+	dma = dma_map_single(tx_ring->dev, data, size, DMA_TO_DEVICE);
+	if (dma_mapping_error(tx_ring->dev, dma))
+		return -EINVAL;
+
+	tx_desc->buf_addr = cpu_to_le64(dma);
+
+	/* These flags are required for a descriptor to be pushed out */
+	td_cmd = (u64)(ICE_TX_DESC_CMD_EOP | ICE_TX_DESC_CMD_RS);
+	tx_desc->cmd_type_offset_bsz =
+		cpu_to_le64(ICE_TX_DESC_DTYPE_DATA |
+			    (td_cmd << ICE_TXD_QW1_CMD_S) |
+			    ((u64)0 << ICE_TXD_QW1_OFFSET_S) |
+			    ((u64)size << ICE_TXD_QW1_TX_BUF_SZ_S) |
+			    ((u64)0 << ICE_TXD_QW1_L2TAG1_S));
+
+	tx_buf->next_to_watch = tx_desc;
+
+	/* Force memory write to complete before letting h/w know
+	 * there are new descriptors to fetch.
+	 */
+	wmb();
+
+	tx_ring->next_to_use++;
+	if (tx_ring->next_to_use >= tx_ring->count)
+		tx_ring->next_to_use = 0;
+
+	writel_relaxed(tx_ring->next_to_use, tx_ring->tail);
+
+	/* Wait until the packets get transmitted to the receive queue. */
+	usleep_range(1000, 2000);
+	dma_unmap_single(tx_ring->dev, dma, size, DMA_TO_DEVICE);
+
+	return 0;
+}
+
+#define ICE_LB_FRAME_SIZE 64
+/**
+ * ice_lbtest_receive_frames - receive and verify test frames
+ * @rx_ring: pointer to the receive ring
+ *
+ * Function receives loopback packets and verify their correctness.
+ * Returns number of received valid frames.
+ */
+static int ice_lbtest_receive_frames(struct ice_ring *rx_ring)
+{
+	struct ice_rx_buf *rx_buf;
+	int valid_frames, i;
+	u8 *received_buf;
+
+	valid_frames = 0;
+
+	for (i = 0; i < rx_ring->count; i++) {
+		union ice_32b_rx_flex_desc *rx_desc;
+
+		rx_desc = ICE_RX_DESC(rx_ring, i);
+
+		if (!(rx_desc->wb.status_error0 &
+		    cpu_to_le16(ICE_TX_DESC_CMD_EOP | ICE_TX_DESC_CMD_RS)))
+			continue;
+
+		rx_buf = &rx_ring->rx_buf[i];
+		received_buf = page_address(rx_buf->page);
+
+		if (ice_lbtest_check_frame(received_buf))
+			valid_frames++;
+	}
+
+	return valid_frames;
+}
+
+/**
+ * ice_loopback_test - perform a loopback test on a given net_device
+ * @netdev: network interface device structure
+ *
+ * This function performs one of the self-tests required by ethtool.
+ * Returns 0 on success, non-zero on failure.
+ */
+static u64 ice_loopback_test(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_vsi *orig_vsi = np->vsi, *test_vsi;
+	struct ice_pf *pf = orig_vsi->back;
+	struct ice_ring *tx_ring, *rx_ring;
+	u8 broadcast[ETH_ALEN], ret = 0;
+	int num_frames, valid_frames;
+	LIST_HEAD(tmp_list);
+	u8 *tx_frame;
+	int i;
+
+	netdev_info(netdev, "loopback test\n");
+
+	test_vsi = ice_lb_vsi_setup(pf, pf->hw.port_info);
+	if (!test_vsi) {
+		netdev_err(netdev, "Failed to create a VSI for the loopback test");
+		return 1;
+	}
+
+	test_vsi->netdev = netdev;
+	tx_ring = test_vsi->tx_rings[0];
+	rx_ring = test_vsi->rx_rings[0];
+
+	if (ice_lbtest_prepare_rings(test_vsi)) {
+		ret = 2;
+		goto lbtest_vsi_close;
+	}
+
+	if (ice_alloc_rx_bufs(rx_ring, rx_ring->count)) {
+		ret = 3;
+		goto lbtest_rings_dis;
+	}
+
+	/* Enable MAC loopback in firmware */
+	if (ice_aq_set_mac_loopback(&pf->hw, true, NULL)) {
+		ret = 4;
+		goto lbtest_mac_dis;
+	}
+
+	/* Test VSI needs to receive broadcast packets */
+	eth_broadcast_addr(broadcast);
+	if (ice_add_mac_to_list(test_vsi, &tmp_list, broadcast)) {
+		ret = 5;
+		goto lbtest_mac_dis;
+	}
+
+	if (ice_add_mac(&pf->hw, &tmp_list)) {
+		ret = 6;
+		goto free_mac_list;
+	}
+
+	if (ice_lbtest_create_frame(pf, &tx_frame, ICE_LB_FRAME_SIZE)) {
+		ret = 7;
+		goto remove_mac_filters;
+	}
+
+	num_frames = min_t(int, tx_ring->count, 32);
+	for (i = 0; i < num_frames; i++) {
+		if (ice_diag_send(tx_ring, tx_frame, ICE_LB_FRAME_SIZE)) {
+			ret = 8;
+			goto lbtest_free_frame;
+		}
+	}
+
+	valid_frames = ice_lbtest_receive_frames(rx_ring);
+	if (!valid_frames)
+		ret = 9;
+	else if (valid_frames != num_frames)
+		ret = 10;
+
+lbtest_free_frame:
+	devm_kfree(&pf->pdev->dev, tx_frame);
+remove_mac_filters:
+	if (ice_remove_mac(&pf->hw, &tmp_list))
+		netdev_err(netdev, "Could not remove MAC filter for the test VSI");
+free_mac_list:
+	ice_free_fltr_list(&pf->pdev->dev, &tmp_list);
+lbtest_mac_dis:
+	/* Disable MAC loopback after the test is completed. */
+	if (ice_aq_set_mac_loopback(&pf->hw, false, NULL))
+		netdev_err(netdev, "Could not disable MAC loopback\n");
+lbtest_rings_dis:
+	if (ice_lbtest_disable_rings(test_vsi))
+		netdev_err(netdev, "Could not disable test rings\n");
+lbtest_vsi_close:
+	test_vsi->netdev = NULL;
+	if (ice_vsi_release(test_vsi))
+		netdev_err(netdev, "Failed to remove the test VSI");
+
+	return ret;
+}
+
+/**
+ * ice_intr_test - perform an interrupt test on a given net_device
+ * @netdev: network interface device structure
+ *
+ * This function performs one of the self-tests required by ethtool.
+ * Returns 0 on success, non-zero on failure.
+ */
+static u64 ice_intr_test(struct net_device *netdev)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	struct ice_pf *pf = np->vsi->back;
+	u16 swic_old = pf->sw_int_count;
+
+	netdev_info(netdev, "interrupt test\n");
+
+	wr32(&pf->hw, GLINT_DYN_CTL(pf->oicr_idx),
+	     GLINT_DYN_CTL_SW_ITR_INDX_M |
+	     GLINT_DYN_CTL_INTENA_MSK_M |
+	     GLINT_DYN_CTL_SWINT_TRIG_M);
+
+	usleep_range(1000, 2000);
+	return (swic_old == pf->sw_int_count);
+}
+
+/**
+ * ice_self_test - handler function for performing a self-test by ethtool
+ * @netdev: network interface device structure
+ * @eth_test: ethtool_test structure
+ * @data: required by ethtool.self_test
+ *
+ * This function is called after invoking 'ethtool -t devname' command where
+ * devname is the name of the network device on which ethtool should operate.
+ * It performs a set of self-tests to check if a device works properly.
+ */
+static void
+ice_self_test(struct net_device *netdev, struct ethtool_test *eth_test,
+	      u64 *data)
+{
+	struct ice_netdev_priv *np = netdev_priv(netdev);
+	bool if_running = netif_running(netdev);
+	struct ice_pf *pf = np->vsi->back;
+
+	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
+		netdev_info(netdev, "offline testing starting\n");
+
+		set_bit(__ICE_TESTING, pf->state);
+
+		if (ice_active_vfs(pf)) {
+			dev_warn(&pf->pdev->dev,
+				 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
+			data[ICE_ETH_TEST_REG] = 1;
+			data[ICE_ETH_TEST_EEPROM] = 1;
+			data[ICE_ETH_TEST_INTR] = 1;
+			data[ICE_ETH_TEST_LOOP] = 1;
+			data[ICE_ETH_TEST_LINK] = 1;
+			eth_test->flags |= ETH_TEST_FL_FAILED;
+			clear_bit(__ICE_TESTING, pf->state);
+			goto skip_ol_tests;
+		}
+		/* If the device is online then take it offline */
+		if (if_running)
+			/* indicate we're in test mode */
+			ice_stop(netdev);
+
+		data[ICE_ETH_TEST_LINK] = ice_link_test(netdev);
+		data[ICE_ETH_TEST_EEPROM] = ice_eeprom_test(netdev);
+		data[ICE_ETH_TEST_INTR] = ice_intr_test(netdev);
+		data[ICE_ETH_TEST_LOOP] = ice_loopback_test(netdev);
+		data[ICE_ETH_TEST_REG] = ice_reg_test(netdev);
+
+		if (data[ICE_ETH_TEST_LINK] ||
+		    data[ICE_ETH_TEST_EEPROM] ||
+		    data[ICE_ETH_TEST_LOOP] ||
+		    data[ICE_ETH_TEST_INTR] ||
+		    data[ICE_ETH_TEST_REG])
+			eth_test->flags |= ETH_TEST_FL_FAILED;
+
+		clear_bit(__ICE_TESTING, pf->state);
+
+		if (if_running) {
+			int status = ice_open(netdev);
+
+			if (status) {
+				dev_err(&pf->pdev->dev,
+					"Could not open device %s, err %d",
+					pf->int_name, status);
+			}
+		}
+	} else {
+		/* Online tests */
+		netdev_info(netdev, "online testing starting\n");
+
+		data[ICE_ETH_TEST_LINK] = ice_link_test(netdev);
+		if (data[ICE_ETH_TEST_LINK])
+			eth_test->flags |= ETH_TEST_FL_FAILED;
+
+		/* Offline only tests, not run in online; pass by default */
+		data[ICE_ETH_TEST_REG] = 0;
+		data[ICE_ETH_TEST_EEPROM] = 0;
+		data[ICE_ETH_TEST_INTR] = 0;
+		data[ICE_ETH_TEST_LOOP] = 0;
+	}
+
+skip_ol_tests:
+	netdev_info(netdev, "testing finished\n");
+}
+
 static void ice_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 {
 	struct ice_netdev_priv *np = netdev_priv(netdev);
@@ -335,6 +921,9 @@ static void ice_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 			p += ETH_GSTRING_LEN;
 		}