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

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-04-08

This series contains updates to ice driver only.

Chinh adds retrying of sending some AQ commands when receiving EBUSY
error.

Victor modifies how nodes are added to reduce stack usage.

Ani renames some variables to either follow spec naming or to be inline
with naming in the rest of the driver. Ignores EMODE error as there are
cases where this error is expected. Performs some cleanup such as
removing unnecessary checks, doing variable assignments over copies, and
removing unneeded variables. Revises some error codes returned in link
settings to be more appropriate. He also implements support for new
firmware option to get default link configuration which accounts for
any needed NVM based overrides for PHY configuration. He also removes
the rx_gro_dropped stat as the value no longer changes.

Jeb removes setting specific link modes on firmwares that no longer
require it.

Brett removes unnecessary checks when adding and removing VLANs.

Tony fixes a checkpatch warning for unnecessary blank line.
====================

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

Author: davem330

drivers/net/ethernet/intel/ice/ice.h

@@ -265,7 +265,6 @@ struct ice_vsi {
 	u32 tx_busy;
 	u32 rx_buf_failed;
 	u32 rx_page_failed;
-	u32 rx_gro_dropped;
 	u16 num_q_vectors;
 	u16 base_vector;		/* IRQ base for OS reserved vectors */
 	enum ice_vsi_type type;

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -877,16 +877,18 @@ struct ice_aqc_get_phy_caps {
 	__le16 param0;
 	/* 18.0 - Report qualified modules */
 #define ICE_AQC_GET_PHY_RQM		BIT(0)
-	/* 18.1 - 18.2 : Report mode
-	 * 00b - Report NVM capabilities
-	 * 01b - Report topology capabilities
-	 * 10b - Report SW configured
+	/* 18.1 - 18.3 : Report mode
+	 * 000b - Report NVM capabilities
+	 * 001b - Report topology capabilities
+	 * 010b - Report SW configured
+	 * 100b - Report default capabilities
 	 */
-#define ICE_AQC_REPORT_MODE_S		1
-#define ICE_AQC_REPORT_MODE_M		(3 << ICE_AQC_REPORT_MODE_S)
-#define ICE_AQC_REPORT_NVM_CAP		0
-#define ICE_AQC_REPORT_TOPO_CAP		BIT(1)
-#define ICE_AQC_REPORT_SW_CFG		BIT(2)
+#define ICE_AQC_REPORT_MODE_S			1
+#define ICE_AQC_REPORT_MODE_M			(7 << ICE_AQC_REPORT_MODE_S)
+#define ICE_AQC_REPORT_TOPO_CAP_NO_MEDIA	0
+#define ICE_AQC_REPORT_TOPO_CAP_MEDIA		BIT(1)
+#define ICE_AQC_REPORT_ACTIVE_CFG		BIT(2)
+#define ICE_AQC_REPORT_DFLT_CFG		BIT(3)
 	__le32 reserved1;
 	__le32 addr_high;
 	__le32 addr_low;

drivers/net/ethernet/intel/ice/ice_common.c

@@ -158,6 +158,10 @@ ice_aq_get_phy_caps(struct ice_port_info *pi, bool qual_mods, u8 report_mode,
 		return ICE_ERR_PARAM;
 	hw = pi->hw;
 
+	if (report_mode == ICE_AQC_REPORT_DFLT_CFG &&
+	    !ice_fw_supports_report_dflt_cfg(hw))
+		return ICE_ERR_PARAM;
+
 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_phy_caps);
 
 	if (qual_mods)
@@ -191,7 +195,7 @@ ice_aq_get_phy_caps(struct ice_port_info *pi, bool qual_mods, u8 report_mode,
 	ice_debug(hw, ICE_DBG_LINK, "   module_type[2] = 0x%x\n",
 		  pcaps->module_type[2]);
 
-	if (!status && report_mode == ICE_AQC_REPORT_TOPO_CAP) {
+	if (!status && report_mode == ICE_AQC_REPORT_TOPO_CAP_MEDIA) {
 		pi->phy.phy_type_low = le64_to_cpu(pcaps->phy_type_low);
 		pi->phy.phy_type_high = le64_to_cpu(pcaps->phy_type_high);
 		memcpy(pi->phy.link_info.module_type, &pcaps->module_type,
@@ -922,7 +926,8 @@ enum ice_status ice_init_hw(struct ice_hw *hw)
 
 	/* Initialize port_info struct with PHY capabilities */
 	status = ice_aq_get_phy_caps(hw->port_info, false,
-				     ICE_AQC_REPORT_TOPO_CAP, pcaps, NULL);
+				     ICE_AQC_REPORT_TOPO_CAP_MEDIA, pcaps,
+				     NULL);
 	devm_kfree(ice_hw_to_dev(hw), pcaps);
 	if (status)
 		dev_warn(ice_hw_to_dev(hw), "Get PHY capabilities failed status = %d, continuing anyway\n",
@@ -1292,6 +1297,85 @@ const struct ice_ctx_ele ice_tlan_ctx_info[] = {
  */
 DEFINE_MUTEX(ice_global_cfg_lock_sw);
 
+/**
+ * ice_should_retry_sq_send_cmd
+ * @opcode: AQ opcode
+ *
+ * Decide if we should retry the send command routine for the ATQ, depending
+ * on the opcode.
+ */
+static bool ice_should_retry_sq_send_cmd(u16 opcode)
+{
+	switch (opcode) {
+	case ice_aqc_opc_get_link_topo:
+	case ice_aqc_opc_lldp_stop:
+	case ice_aqc_opc_lldp_start:
+	case ice_aqc_opc_lldp_filter_ctrl:
+		return true;
+	}
+
+	return false;
+}
+
+/**
+ * ice_sq_send_cmd_retry - send command to Control Queue (ATQ)
+ * @hw: pointer to the HW struct
+ * @cq: pointer to the specific Control queue
+ * @desc: prefilled descriptor describing the command
+ * @buf: buffer to use for indirect commands (or NULL for direct commands)
+ * @buf_size: size of buffer for indirect commands (or 0 for direct commands)
+ * @cd: pointer to command details structure
+ *
+ * Retry sending the FW Admin Queue command, multiple times, to the FW Admin
+ * Queue if the EBUSY AQ error is returned.
+ */
+static enum ice_status
+ice_sq_send_cmd_retry(struct ice_hw *hw, struct ice_ctl_q_info *cq,
+		      struct ice_aq_desc *desc, void *buf, u16 buf_size,
+		      struct ice_sq_cd *cd)
+{
+	struct ice_aq_desc desc_cpy;
+	enum ice_status status;
+	bool is_cmd_for_retry;
+	u8 *buf_cpy = NULL;
+	u8 idx = 0;
+	u16 opcode;
+
+	opcode = le16_to_cpu(desc->opcode);
+	is_cmd_for_retry = ice_should_retry_sq_send_cmd(opcode);
+	memset(&desc_cpy, 0, sizeof(desc_cpy));
+
+	if (is_cmd_for_retry) {
+		if (buf) {
+			buf_cpy = kzalloc(buf_size, GFP_KERNEL);
+			if (!buf_cpy)
+				return ICE_ERR_NO_MEMORY;
+		}
+
+		memcpy(&desc_cpy, desc, sizeof(desc_cpy));
+	}
+
+	do {
+		status = ice_sq_send_cmd(hw, cq, desc, buf, buf_size, cd);
+
+		if (!is_cmd_for_retry || !status ||
+		    hw->adminq.sq_last_status != ICE_AQ_RC_EBUSY)
+			break;
+
+		if (buf_cpy)
+			memcpy(buf, buf_cpy, buf_size);
+
+		memcpy(desc, &desc_cpy, sizeof(desc_cpy));
+
+		mdelay(ICE_SQ_SEND_DELAY_TIME_MS);
+
+	} while (++idx < ICE_SQ_SEND_MAX_EXECUTE);
+
+	kfree(buf_cpy);
+
+	return status;
+}
+
 /**
  * ice_aq_send_cmd - send FW Admin Queue command to FW Admin Queue
  * @hw: pointer to the HW struct
@@ -1333,7 +1417,7 @@ ice_aq_send_cmd(struct ice_hw *hw, struct ice_aq_desc *desc, void *buf,
 		break;
 	}
 
-	status = ice_sq_send_cmd(hw, &hw->adminq, desc, buf, buf_size, cd);
+	status = ice_sq_send_cmd_retry(hw, &hw->adminq, desc, buf, buf_size, cd);
 	if (lock_acquired)
 		mutex_unlock(&ice_global_cfg_lock_sw);
 
@@ -2655,7 +2739,7 @@ enum ice_status ice_update_link_info(struct ice_port_info *pi)
 		if (!pcaps)
 			return ICE_ERR_NO_MEMORY;
 
-		status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP,
+		status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA,
 					     pcaps, NULL);
 
 		devm_kfree(ice_hw_to_dev(hw), pcaps);
@@ -2815,8 +2899,8 @@ ice_set_fc(struct ice_port_info *pi, u8 *aq_failures, bool ena_auto_link_update)
 		return ICE_ERR_NO_MEMORY;
 
 	/* Get the current PHY config */
-	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps,
-				     NULL);
+	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG,
+				     pcaps, NULL);
 	if (status) {
 		*aq_failures = ICE_SET_FC_AQ_FAIL_GET;
 		goto out;
@@ -2929,17 +3013,6 @@ ice_copy_phy_caps_to_cfg(struct ice_port_info *pi,
 	cfg->link_fec_opt = caps->link_fec_options;
 	cfg->module_compliance_enforcement =
 		caps->module_compliance_enforcement;
-
-	if (ice_fw_supports_link_override(pi->hw)) {
-		struct ice_link_default_override_tlv tlv;
-
-		if (ice_get_link_default_override(&tlv, pi))
-			return;
-
-		if (tlv.options & ICE_LINK_OVERRIDE_STRICT_MODE)
-			cfg->module_compliance_enforcement |=
-				ICE_LINK_OVERRIDE_STRICT_MODE;
-	}
 }
 
 /**
@@ -2954,16 +3027,21 @@ ice_cfg_phy_fec(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
 {
 	struct ice_aqc_get_phy_caps_data *pcaps;
 	enum ice_status status;
+	struct ice_hw *hw;
 
 	if (!pi || !cfg)
 		return ICE_ERR_BAD_PTR;
 
+	hw = pi->hw;
+
 	pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
 	if (!pcaps)
 		return ICE_ERR_NO_MEMORY;
 
-	status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP, pcaps,
-				     NULL);
+	status = ice_aq_get_phy_caps(pi, false,
+				     (ice_fw_supports_report_dflt_cfg(hw) ?
+				      ICE_AQC_REPORT_DFLT_CFG :
+				      ICE_AQC_REPORT_TOPO_CAP_MEDIA), pcaps, NULL);
 	if (status)
 		goto out;
 
@@ -3002,7 +3080,8 @@ ice_cfg_phy_fec(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
 		break;
 	}
 
-	if (fec == ICE_FEC_AUTO && ice_fw_supports_link_override(pi->hw)) {
+	if (fec == ICE_FEC_AUTO && ice_fw_supports_link_override(hw) &&
+	    !ice_fw_supports_report_dflt_cfg(hw)) {
 		struct ice_link_default_override_tlv tlv;
 
 		if (ice_get_link_default_override(&tlv, pi))
@@ -4412,3 +4491,23 @@ ice_lldp_fltr_add_remove(struct ice_hw *hw, u16 vsi_num, bool add)
 
 	return ice_aq_send_cmd(hw, &desc, NULL, 0, NULL);
 }
+
+/**
+ * ice_fw_supports_report_dflt_cfg
+ * @hw: pointer to the hardware structure
+ *
+ * Checks if the firmware supports report default configuration
+ */
+bool ice_fw_supports_report_dflt_cfg(struct ice_hw *hw)
+{
+	if (hw->api_maj_ver == ICE_FW_API_REPORT_DFLT_CFG_MAJ) {
+		if (hw->api_min_ver > ICE_FW_API_REPORT_DFLT_CFG_MIN)
+			return true;
+		if (hw->api_min_ver == ICE_FW_API_REPORT_DFLT_CFG_MIN &&
+		    hw->api_patch >= ICE_FW_API_REPORT_DFLT_CFG_PATCH)
+			return true;
+	} else if (hw->api_maj_ver > ICE_FW_API_REPORT_DFLT_CFG_MAJ) {
+		return true;
+	}
+	return false;
+}

drivers/net/ethernet/intel/ice/ice_common.h

@@ -11,6 +11,9 @@
 #include "ice_switch.h"
 #include <linux/avf/virtchnl.h>
 
+#define ICE_SQ_SEND_DELAY_TIME_MS	10
+#define ICE_SQ_SEND_MAX_EXECUTE		3
+
 enum ice_status ice_init_hw(struct ice_hw *hw);
 void ice_deinit_hw(struct ice_hw *hw);
 enum ice_status ice_check_reset(struct ice_hw *hw);
@@ -176,4 +179,5 @@ ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
 bool ice_fw_supports_lldp_fltr_ctrl(struct ice_hw *hw);
 enum ice_status
 ice_lldp_fltr_add_remove(struct ice_hw *hw, u16 vsi_num, bool add);
+bool ice_fw_supports_report_dflt_cfg(struct ice_hw *hw);
 #endif /* _ICE_COMMON_H_ */

drivers/net/ethernet/intel/ice/ice_controlq.c

@@ -892,7 +892,7 @@ static bool ice_sq_done(struct ice_hw *hw, struct ice_ctl_q_info *cq)
  * ice_sq_send_cmd - send command to Control Queue (ATQ)
  * @hw: pointer to the HW struct
  * @cq: pointer to the specific Control queue
- * @desc: prefilled descriptor describing the command (non DMA mem)
+ * @desc: prefilled descriptor describing the command
  * @buf: buffer to use for indirect commands (or NULL for direct commands)
  * @buf_size: size of buffer for indirect commands (or 0 for direct commands)
  * @cd: pointer to command details structure