qed: Add support for processing iscsi tlv request.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_mcp.h

@@ -217,7 +217,8 @@ enum qed_mfw_tlv_type {
 	QED_MFW_TLV_GENERIC = 0x1,	/* Core driver TLVs */
 	QED_MFW_TLV_ETH = 0x2,		/* L2 driver TLVs */
 	QED_MFW_TLV_FCOE = 0x4,		/* FCoE protocol TLVs */
-	QED_MFW_TLV_MAX = 0x8,
+	QED_MFW_TLV_ISCSI = 0x8,	/* SCSI protocol TLVs */
+	QED_MFW_TLV_MAX = 0x16,
 };
 
 struct qed_mfw_tlv_generic {
@@ -247,6 +248,7 @@ union qed_mfw_tlv_data {
 	struct qed_mfw_tlv_generic generic;
 	struct qed_mfw_tlv_eth eth;
 	struct qed_mfw_tlv_fcoe fcoe;
+	struct qed_mfw_tlv_iscsi iscsi;
 };
 
 /**

drivers/net/ethernet/qlogic/qed/qed_mng_tlv.c

@@ -215,6 +215,23 @@ static int qed_mfw_get_tlv_group(u8 tlv_type, u8 *tlv_group)
 	case DRV_TLV_SCSI_CHECK_5_TIMESTAMP:
 		*tlv_group = QED_MFW_TLV_FCOE;
 		break;
+	case DRV_TLV_TARGET_LLMNR_ENABLED:
+	case DRV_TLV_HEADER_DIGEST_FLAG_ENABLED:
+	case DRV_TLV_DATA_DIGEST_FLAG_ENABLED:
+	case DRV_TLV_AUTHENTICATION_METHOD:
+	case DRV_TLV_ISCSI_BOOT_TARGET_PORTAL:
+	case DRV_TLV_MAX_FRAME_SIZE:
+	case DRV_TLV_PDU_TX_DESCRIPTORS_QUEUE_SIZE:
+	case DRV_TLV_PDU_RX_DESCRIPTORS_QUEUE_SIZE:
+	case DRV_TLV_ISCSI_BOOT_PROGRESS:
+	case DRV_TLV_PDU_TX_DESCRIPTOR_QUEUE_AVG_DEPTH:
+	case DRV_TLV_PDU_RX_DESCRIPTORS_QUEUE_AVG_DEPTH:
+	case DRV_TLV_ISCSI_PDU_RX_FRAMES_RECEIVED:
+	case DRV_TLV_ISCSI_PDU_RX_BYTES_RECEIVED:
+	case DRV_TLV_ISCSI_PDU_TX_FRAMES_SENT:
+	case DRV_TLV_ISCSI_PDU_TX_BYTES_SENT:
+		*tlv_group |= QED_MFW_TLV_ISCSI;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -1054,6 +1071,109 @@ qed_mfw_get_fcoe_tlv_value(struct qed_drv_tlv_hdr *p_tlv,
 	return -1;
 }
 
+static int
+qed_mfw_get_iscsi_tlv_value(struct qed_drv_tlv_hdr *p_tlv,
+			    struct qed_mfw_tlv_iscsi *p_drv_buf,
+			    struct qed_tlv_parsed_buf *p_buf)
+{
+	switch (p_tlv->tlv_type) {
+	case DRV_TLV_TARGET_LLMNR_ENABLED:
+		if (p_drv_buf->target_llmnr_set) {
+			p_buf->p_val = &p_drv_buf->target_llmnr;
+			return sizeof(p_drv_buf->target_llmnr);
+		}
+		break;
+	case DRV_TLV_HEADER_DIGEST_FLAG_ENABLED:
+		if (p_drv_buf->header_digest_set) {
+			p_buf->p_val = &p_drv_buf->header_digest;
+			return sizeof(p_drv_buf->header_digest);
+		}
+		break;
+	case DRV_TLV_DATA_DIGEST_FLAG_ENABLED:
+		if (p_drv_buf->data_digest_set) {
+			p_buf->p_val = &p_drv_buf->data_digest;
+			return sizeof(p_drv_buf->data_digest);
+		}
+		break;
+	case DRV_TLV_AUTHENTICATION_METHOD:
+		if (p_drv_buf->auth_method_set) {
+			p_buf->p_val = &p_drv_buf->auth_method;
+			return sizeof(p_drv_buf->auth_method);
+		}
+		break;
+	case DRV_TLV_ISCSI_BOOT_TARGET_PORTAL:
+		if (p_drv_buf->boot_taget_portal_set) {
+			p_buf->p_val = &p_drv_buf->boot_taget_portal;
+			return sizeof(p_drv_buf->boot_taget_portal);
+		}
+		break;
+	case DRV_TLV_MAX_FRAME_SIZE:
+		if (p_drv_buf->frame_size_set) {
+			p_buf->p_val = &p_drv_buf->frame_size;
+			return sizeof(p_drv_buf->frame_size);
+		}
+		break;
+	case DRV_TLV_PDU_TX_DESCRIPTORS_QUEUE_SIZE:
+		if (p_drv_buf->tx_desc_size_set) {
+			p_buf->p_val = &p_drv_buf->tx_desc_size;
+			return sizeof(p_drv_buf->tx_desc_size);
+		}
+		break;
+	case DRV_TLV_PDU_RX_DESCRIPTORS_QUEUE_SIZE:
+		if (p_drv_buf->rx_desc_size_set) {
+			p_buf->p_val = &p_drv_buf->rx_desc_size;
+			return sizeof(p_drv_buf->rx_desc_size);
+		}
+		break;
+	case DRV_TLV_ISCSI_BOOT_PROGRESS:
+		if (p_drv_buf->boot_progress_set) {
+			p_buf->p_val = &p_drv_buf->boot_progress;
+			return sizeof(p_drv_buf->boot_progress);
+		}
+		break;
+	case DRV_TLV_PDU_TX_DESCRIPTOR_QUEUE_AVG_DEPTH:
+		if (p_drv_buf->tx_desc_qdepth_set) {
+			p_buf->p_val = &p_drv_buf->tx_desc_qdepth;
+			return sizeof(p_drv_buf->tx_desc_qdepth);
+		}
+		break;
+	case DRV_TLV_PDU_RX_DESCRIPTORS_QUEUE_AVG_DEPTH:
+		if (p_drv_buf->rx_desc_qdepth_set) {
+			p_buf->p_val = &p_drv_buf->rx_desc_qdepth;
+			return sizeof(p_drv_buf->rx_desc_qdepth);
+		}
+		break;
+	case DRV_TLV_ISCSI_PDU_RX_FRAMES_RECEIVED:
+		if (p_drv_buf->rx_frames_set) {
+			p_buf->p_val = &p_drv_buf->rx_frames;
+			return sizeof(p_drv_buf->rx_frames);
+		}
+		break;
+	case DRV_TLV_ISCSI_PDU_RX_BYTES_RECEIVED:
+		if (p_drv_buf->rx_bytes_set) {
+			p_buf->p_val = &p_drv_buf->rx_bytes;
+			return sizeof(p_drv_buf->rx_bytes);
+		}
+		break;
+	case DRV_TLV_ISCSI_PDU_TX_FRAMES_SENT:
+		if (p_drv_buf->tx_frames_set) {
+			p_buf->p_val = &p_drv_buf->tx_frames;
+			return sizeof(p_drv_buf->tx_frames);
+		}
+		break;
+	case DRV_TLV_ISCSI_PDU_TX_BYTES_SENT:
+		if (p_drv_buf->tx_bytes_set) {
+			p_buf->p_val = &p_drv_buf->tx_bytes;
+			return sizeof(p_drv_buf->tx_bytes);
+		}
+		break;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
 static int qed_mfw_update_tlvs(struct qed_hwfn *p_hwfn,
 			       u8 tlv_group, u8 *p_mfw_buf, u32 size)
 {
@@ -1097,6 +1217,10 @@ static int qed_mfw_update_tlvs(struct qed_hwfn *p_hwfn,
 			len = qed_mfw_get_fcoe_tlv_value(&tlv,
 							 &p_tlv_data->fcoe,
 							 &buffer);
+		else
+			len = qed_mfw_get_iscsi_tlv_value(&tlv,
+							  &p_tlv_data->iscsi,
+							  &buffer);
 
 		if (len > 0) {
 			WARN(len > 4 * tlv.tlv_length,
@@ -1179,6 +1303,13 @@ int qed_mfw_process_tlv_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 		tlv_group &= ~QED_MFW_TLV_FCOE;
 	}
 
+	if ((tlv_group & QED_MFW_TLV_ISCSI) &&
+	    p_hwfn->hw_info.personality != QED_PCI_ISCSI) {
+		DP_VERBOSE(p_hwfn, QED_MSG_SP,
+			   "Skipping iSCSI TLVs for non-iSCSI function\n");
+		tlv_group &= ~QED_MFW_TLV_ISCSI;
+	}
+
 	/* Update the TLV values in the local buffer */
 	for (id = QED_MFW_TLV_GENERIC; id < QED_MFW_TLV_MAX; id <<= 1) {
 		if (tlv_group & id)

include/linux/qed/qed_if.h

@@ -412,6 +412,42 @@ struct qed_mfw_tlv_fcoe {
 	struct qed_mfw_tlv_time scsi_chk_tstamp[5];
 };
 
+struct qed_mfw_tlv_iscsi {
+	u8 target_llmnr;
+	bool target_llmnr_set;
+	u8 header_digest;
+	bool header_digest_set;
+	u8 data_digest;
+	bool data_digest_set;
+	u8 auth_method;
+#define QED_MFW_TLV_AUTH_METHOD_NONE            (1)
+#define QED_MFW_TLV_AUTH_METHOD_CHAP            (2)
+#define QED_MFW_TLV_AUTH_METHOD_MUTUAL_CHAP     (3)
+	bool auth_method_set;
+	u16 boot_taget_portal;
+	bool boot_taget_portal_set;
+	u16 frame_size;
+	bool frame_size_set;
+	u16 tx_desc_size;
+	bool tx_desc_size_set;
+	u16 rx_desc_size;
+	bool rx_desc_size_set;
+	u8 boot_progress;
+	bool boot_progress_set;
+	u16 tx_desc_qdepth;
+	bool tx_desc_qdepth_set;
+	u16 rx_desc_qdepth;
+	bool rx_desc_qdepth_set;
+	u64 rx_frames;
+	bool rx_frames_set;
+	u64 rx_bytes;
+	bool rx_bytes_set;
+	u64 tx_frames;
+	bool tx_frames_set;
+	u64 tx_bytes;
+	bool tx_bytes_set;
+};
+
 #define DIRECT_REG_WR(reg_addr, val) writel((u32)val, \
 					    (void __iomem *)(reg_addr))