[RFC PATCH v4 00/27] NVMeTCP Offload ULP and QEDN Device Driver

@@ -110,6 +110,9 @@ config QED_RDMA
 config QED_ISCSI
 	bool
 
+config QED_NVMETCP
+	bool
+
 config QED_FCOE
 	bool
 

@@ -28,6 +28,8 @@ qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o
 qed-$(CONFIG_QED_LL2) += qed_ll2.o
 qed-$(CONFIG_QED_OOO) += qed_ooo.o
 
+qed-$(CONFIG_QED_NVMETCP) += qed_nvmetcp.o
+
 qed-$(CONFIG_QED_RDMA) +=	\
 	qed_iwarp.o		\
 	qed_rdma.o		\

@@ -240,6 +240,7 @@ enum QED_FEATURE {
 	QED_VF,
 	QED_RDMA_CNQ,
 	QED_ISCSI_CQ,
+	QED_NVMETCP_CQ = QED_ISCSI_CQ,
 	QED_FCOE_CQ,
 	QED_VF_L2_QUE,
 	QED_MAX_FEATURES,

@@ -592,6 +593,7 @@ struct qed_hwfn {
 	struct qed_ooo_info		*p_ooo_info;
 	struct qed_rdma_info		*p_rdma_info;
 	struct qed_iscsi_info		*p_iscsi_info;
+	struct qed_nvmetcp_info		*p_nvmetcp_info;
 	struct qed_fcoe_info		*p_fcoe_info;
 	struct qed_pf_params		pf_params;
 

@@ -828,6 +830,7 @@ struct qed_dev {
 		struct qed_eth_cb_ops		*eth;
 		struct qed_fcoe_cb_ops		*fcoe;
 		struct qed_iscsi_cb_ops		*iscsi;
+		struct qed_nvmetcp_cb_ops	*nvmetcp;
 	} protocol_ops;
 	void				*ops_cookie;
 

@@ -20,6 +20,7 @@
 #include <linux/qed/fcoe_common.h>
 #include <linux/qed/eth_common.h>
 #include <linux/qed/iscsi_common.h>
+#include <linux/qed/nvmetcp_common.h>
 #include <linux/qed/iwarp_common.h>
 #include <linux/qed/rdma_common.h>
 #include <linux/qed/roce_common.h>

@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/* Copyright 2021 Marvell. All rights reserved. */
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <asm/param.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/qed/qed_nvmetcp_if.h>
+#include "qed.h"
+#include "qed_cxt.h"
+#include "qed_dev_api.h"
+#include "qed_hsi.h"
+#include "qed_hw.h"
+#include "qed_int.h"
+#include "qed_nvmetcp.h"
+#include "qed_ll2.h"
+#include "qed_mcp.h"
+#include "qed_sp.h"
+#include "qed_reg_addr.h"
+
+static int qed_nvmetcp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
+				   u16 echo, union event_ring_data *data,
+				   u8 fw_return_code)
+{
+	if (p_hwfn->p_nvmetcp_info->event_cb) {
+		struct qed_nvmetcp_info *p_nvmetcp = p_hwfn->p_nvmetcp_info;
+
+		return p_nvmetcp->event_cb(p_nvmetcp->event_context,
+					 fw_event_code, data);
+	} else {
+		DP_NOTICE(p_hwfn, "nvmetcp async completion is not set\n");
+
+		return -EINVAL;
+	}
+}
+
+static int qed_sp_nvmetcp_func_start(struct qed_hwfn *p_hwfn,
+				     enum spq_mode comp_mode,
+				     struct qed_spq_comp_cb *p_comp_addr,
+				     void *event_context,
+				     nvmetcp_event_cb_t async_event_cb)
+{
+	struct nvmetcp_init_ramrod_params *p_ramrod = NULL;
+	struct qed_nvmetcp_pf_params *p_params = NULL;
+	struct scsi_init_func_queues *p_queue = NULL;
+	struct nvmetcp_spe_func_init *p_init = NULL;
+	struct qed_sp_init_data init_data = {};
+	struct qed_spq_entry *p_ent = NULL;
+	int rc = 0;
+	u16 val;
+	u8 i;
+
+	/* Get SPQ entry */
+	init_data.cid = qed_spq_get_cid(p_hwfn);
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_INIT_FUNC,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	p_ramrod = &p_ent->ramrod.nvmetcp_init;
+	p_init = &p_ramrod->nvmetcp_init_spe;
+	p_params = &p_hwfn->pf_params.nvmetcp_pf_params;
+	p_queue = &p_init->q_params;
+
+	p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
+	p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
+	p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
+	p_init->ll2_rx_queue_id = RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) +
+					p_params->ll2_ooo_queue_id;
+
+	SET_FIELD(p_init->flags, NVMETCP_SPE_FUNC_INIT_NVMETCP_MODE, 1);
+
+	p_init->func_params.log_page_size = ilog2(PAGE_SIZE);
+	p_init->func_params.num_tasks = cpu_to_le16(p_params->num_tasks);
+	p_init->debug_flags = p_params->debug_mode;
+
+	DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
+		       p_params->glbl_q_params_addr);
+
+	p_queue->cq_num_entries = cpu_to_le16(QED_NVMETCP_FW_CQ_SIZE);
+	p_queue->num_queues = p_params->num_queues;
+	val = RESC_START(p_hwfn, QED_CMDQS_CQS);
+	p_queue->queue_relative_offset = cpu_to_le16((u16)val);
+	p_queue->cq_sb_pi = p_params->gl_rq_pi;
+
+	for (i = 0; i < p_params->num_queues; i++) {
+		val = qed_get_igu_sb_id(p_hwfn, i);
+		p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
+	}
+
+	SET_FIELD(p_queue->q_validity,
+		  SCSI_INIT_FUNC_QUEUES_CMD_VALID, 0);
+	p_queue->cmdq_num_entries = 0;
+	p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
+
+	/* p_ramrod->tcp_init.min_rto = cpu_to_le16(p_params->min_rto); */
+	p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(QED_TCP_TWO_MSL_TIMER);
+	p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(QED_TCP_SWS_TIMER);
+	p_init->half_way_close_timeout = cpu_to_le16(QED_TCP_HALF_WAY_CLOSE_TIMEOUT);
+	p_ramrod->tcp_init.max_fin_rt = QED_TCP_MAX_FIN_RT;
+
+	SET_FIELD(p_ramrod->nvmetcp_init_spe.params,
+		  NVMETCP_SPE_FUNC_INIT_MAX_SYN_RT, QED_TCP_MAX_FIN_RT);
+
+	p_hwfn->p_nvmetcp_info->event_context = event_context;
+	p_hwfn->p_nvmetcp_info->event_cb = async_event_cb;
+
+	qed_spq_register_async_cb(p_hwfn, PROTOCOLID_NVMETCP,
+				  qed_nvmetcp_async_event);
+
+	return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_nvmetcp_func_stop(struct qed_hwfn *p_hwfn,
+				    enum spq_mode comp_mode,
+				    struct qed_spq_comp_cb *p_comp_addr)
+{
+	struct qed_spq_entry *p_ent = NULL;
+	struct qed_sp_init_data init_data;
+	int rc;
+
+	/* Get SPQ entry */
+	memset(&init_data, 0, sizeof(init_data));
+	init_data.cid = qed_spq_get_cid(p_hwfn);
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_DESTROY_FUNC,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	rc = qed_spq_post(p_hwfn, p_ent, NULL);
+
+	qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_NVMETCP);
+
+	return rc;
+}
+
+static int qed_fill_nvmetcp_dev_info(struct qed_dev *cdev,
+				     struct qed_dev_nvmetcp_info *info)
+{
+	struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
+	int rc;
+
+	memset(info, 0, sizeof(*info));
+	rc = qed_fill_dev_info(cdev, &info->common);
+
+	info->port_id = MFW_PORT(hwfn);
+	info->num_cqs = FEAT_NUM(hwfn, QED_NVMETCP_CQ);
+
+	return rc;
+}
+
+static void qed_register_nvmetcp_ops(struct qed_dev *cdev,
+				     struct qed_nvmetcp_cb_ops *ops,
+				     void *cookie)
+{
+	cdev->protocol_ops.nvmetcp = ops;
+	cdev->ops_cookie = cookie;
+}
+
+static int qed_nvmetcp_stop(struct qed_dev *cdev)
+{
+	int rc;
+
+	if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
+		DP_NOTICE(cdev, "nvmetcp already stopped\n");
+
+		return 0;
+	}
+
+	if (!hash_empty(cdev->connections)) {
+		DP_NOTICE(cdev,
+			  "Can't stop nvmetcp - not all connections were returned\n");
+
+		return -EINVAL;
+	}
+
+	/* Stop the nvmetcp */
+	rc = qed_sp_nvmetcp_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
+				      NULL);
+	cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
+
+	return rc;
+}
+
+static int qed_nvmetcp_start(struct qed_dev *cdev,
+			     struct qed_nvmetcp_tid *tasks,
+			     void *event_context,
+			     nvmetcp_event_cb_t async_event_cb)
+{
+	struct qed_tid_mem *tid_info;
+	int rc;
+
+	if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
+		DP_NOTICE(cdev, "nvmetcp already started;\n");
+
+		return 0;
+	}
+
+	rc = qed_sp_nvmetcp_func_start(QED_AFFIN_HWFN(cdev),
+				       QED_SPQ_MODE_EBLOCK, NULL,
+				       event_context, async_event_cb);
+	if (rc) {
+		DP_NOTICE(cdev, "Failed to start nvmetcp\n");
+
+		return rc;
+	}
+
+	cdev->flags |= QED_FLAG_STORAGE_STARTED;
+	hash_init(cdev->connections);
+
+	if (!tasks)
+		return 0;
+
+	tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
+
+	if (!tid_info) {
+		qed_nvmetcp_stop(cdev);
+
+		return -ENOMEM;
+	}
+
+	rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
+	if (rc) {
+		DP_NOTICE(cdev, "Failed to gather task information\n");
+		qed_nvmetcp_stop(cdev);
+		kfree(tid_info);
+
+		return rc;
+	}
+
+	/* Fill task information */
+	tasks->size = tid_info->tid_size;
+	tasks->num_tids_per_block = tid_info->num_tids_per_block;
+	memcpy(tasks->blocks, tid_info->blocks,
+	       MAX_TID_BLOCKS_NVMETCP * sizeof(u8 *));
+
+	kfree(tid_info);
+
+	return 0;
+}
+
+static const struct qed_nvmetcp_ops qed_nvmetcp_ops_pass = {
+	.common = &qed_common_ops_pass,
+	.ll2 = &qed_ll2_ops_pass,
+	.fill_dev_info = &qed_fill_nvmetcp_dev_info,
+	.register_ops = &qed_register_nvmetcp_ops,
+	.start = &qed_nvmetcp_start,
+	.stop = &qed_nvmetcp_stop,
+
+	/* Placeholder - Connection level ops */
+};
+
+const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void)
+{
+	return &qed_nvmetcp_ops_pass;
+}
+EXPORT_SYMBOL(qed_get_nvmetcp_ops);
+
+void qed_put_nvmetcp_ops(void)
+{
+}
+EXPORT_SYMBOL(qed_put_nvmetcp_ops);

@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/* Copyright 2021 Marvell. All rights reserved. */
+
+#ifndef _QED_NVMETCP_H
+#define _QED_NVMETCP_H
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/qed/tcp_common.h>
+#include <linux/qed/qed_nvmetcp_if.h>
+#include <linux/qed/qed_chain.h>
+#include "qed.h"
+#include "qed_hsi.h"
+#include "qed_mcp.h"
+#include "qed_sp.h"
+
+#define QED_NVMETCP_FW_CQ_SIZE (4 * 1024)
+
+/* tcp parameters */
+#define QED_TCP_TWO_MSL_TIMER 4000
+#define QED_TCP_HALF_WAY_CLOSE_TIMEOUT 10
+#define QED_TCP_MAX_FIN_RT 2
+#define QED_TCP_SWS_TIMER 5000
+
+struct qed_nvmetcp_info {
+	spinlock_t lock; /* Connection resources. */
+	struct list_head free_list;
+	u16 max_num_outstanding_tasks;
+	void *event_context;
+	nvmetcp_event_cb_t event_cb;
+};
+
+#if IS_ENABLED(CONFIG_QED_NVMETCP)
+int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn);
+void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn);
+void qed_nvmetcp_free(struct qed_hwfn *p_hwfn);
+
+#else /* IS_ENABLED(CONFIG_QED_NVMETCP) */
+static inline int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn)
+{
+	return -EINVAL;
+}
+
+static inline void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn) {}
+static inline void qed_nvmetcp_free(struct qed_hwfn *p_hwfn) {}
+
+#endif /* IS_ENABLED(CONFIG_QED_NVMETCP) */
+
+#endif

@@ -100,6 +100,8 @@ union ramrod_data {
 	struct iscsi_spe_conn_mac_update iscsi_conn_mac_update;
 	struct iscsi_spe_conn_termination iscsi_conn_terminate;
 
+	struct nvmetcp_init_ramrod_params nvmetcp_init;
+
 	struct vf_start_ramrod_data vf_start;
 	struct vf_stop_ramrod_data vf_stop;
 };

@@ -703,6 +703,7 @@ enum mf_mode {
 /* Per-protocol connection types */
 enum protocol_type {
 	PROTOCOLID_ISCSI,
+	PROTOCOLID_NVMETCP = PROTOCOLID_ISCSI,
 	PROTOCOLID_FCOE,
 	PROTOCOLID_ROCE,
 	PROTOCOLID_CORE,

@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/* Copyright 2021 Marvell. All rights reserved. */
+
+#ifndef __NVMETCP_COMMON__
+#define __NVMETCP_COMMON__
+
+#include "tcp_common.h"
+
+/* NVMeTCP firmware function init parameters */
+struct nvmetcp_spe_func_init {
+	__le16 half_way_close_timeout;
+	u8 num_sq_pages_in_ring;
+	u8 num_r2tq_pages_in_ring;
+	u8 num_uhq_pages_in_ring;
+	u8 ll2_rx_queue_id;
+	u8 flags;
+#define NVMETCP_SPE_FUNC_INIT_COUNTERS_EN_MASK 0x1
+#define NVMETCP_SPE_FUNC_INIT_COUNTERS_EN_SHIFT 0
+#define NVMETCP_SPE_FUNC_INIT_NVMETCP_MODE_MASK 0x1
+#define NVMETCP_SPE_FUNC_INIT_NVMETCP_MODE_SHIFT 1
+#define NVMETCP_SPE_FUNC_INIT_RESERVED0_MASK 0x3F
+#define NVMETCP_SPE_FUNC_INIT_RESERVED0_SHIFT 2
+	u8 debug_flags;
+	__le16 reserved1;
+	u8 params;
+#define NVMETCP_SPE_FUNC_INIT_MAX_SYN_RT_MASK	0xF
+#define NVMETCP_SPE_FUNC_INIT_MAX_SYN_RT_SHIFT	0
+#define NVMETCP_SPE_FUNC_INIT_RESERVED1_MASK	0xF
+#define NVMETCP_SPE_FUNC_INIT_RESERVED1_SHIFT	4
+	u8 reserved2[5];
+	struct scsi_init_func_params func_params;
+	struct scsi_init_func_queues q_params;
+};
+
+/* NVMeTCP init params passed by driver to FW in NVMeTCP init ramrod. */
+struct nvmetcp_init_ramrod_params {
+	struct nvmetcp_spe_func_init nvmetcp_init_spe;
+	struct tcp_init_params tcp_init;
+};
+
+/* NVMeTCP Ramrod Command IDs */
+enum nvmetcp_ramrod_cmd_id {
+	NVMETCP_RAMROD_CMD_ID_UNUSED = 0,
+	NVMETCP_RAMROD_CMD_ID_INIT_FUNC = 1,
+	NVMETCP_RAMROD_CMD_ID_DESTROY_FUNC = 2,
+	MAX_NVMETCP_RAMROD_CMD_ID
+};
+
+struct nvmetcp_glbl_queue_entry {
+	struct regpair cq_pbl_addr;
+	struct regpair reserved;
+};
+
+#endif /* __NVMETCP_COMMON__ */

@@ -542,6 +542,26 @@ struct qed_iscsi_pf_params {
 	u8 bdq_pbl_num_entries[3];
 };
 
+struct qed_nvmetcp_pf_params {
+	u64 glbl_q_params_addr;
+	u16 cq_num_entries;
+
+	u16 num_cons;
+	u16 num_tasks;
+
+	u8 num_sq_pages_in_ring;
+	u8 num_r2tq_pages_in_ring;
+	u8 num_uhq_pages_in_ring;
+
+	u8 num_queues;
+	u8 gl_rq_pi;
+	u8 gl_cmd_pi;
+	u8 debug_mode;
+	u8 ll2_ooo_queue_id;
+
+	u16 min_rto;
+};
+
 struct qed_rdma_pf_params {
 	/* Supplied to QED during resource allocation (may affect the ILT and
 	 * the doorbell BAR).

@@ -560,6 +580,7 @@ struct qed_pf_params {
 	struct qed_eth_pf_params eth_pf_params;
 	struct qed_fcoe_pf_params fcoe_pf_params;
 	struct qed_iscsi_pf_params iscsi_pf_params;
+	struct qed_nvmetcp_pf_params nvmetcp_pf_params;
 	struct qed_rdma_pf_params rdma_pf_params;
 };
 

@@ -662,6 +683,7 @@ enum qed_sb_type {
 enum qed_protocol {
 	QED_PROTOCOL_ETH,
 	QED_PROTOCOL_ISCSI,
+	QED_PROTOCOL_NVMETCP = QED_PROTOCOL_ISCSI,
 	QED_PROTOCOL_FCOE,
 };
 

@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/* Copyright 2021 Marvell. All rights reserved. */
+
+#ifndef _QED_NVMETCP_IF_H
+#define _QED_NVMETCP_IF_H
+#include <linux/types.h>
+#include <linux/qed/qed_if.h>
+
+#define QED_NVMETCP_MAX_IO_SIZE	0x800000
+
+typedef int (*nvmetcp_event_cb_t) (void *context,
+				   u8 fw_event_code, void *fw_handle);
+
+struct qed_dev_nvmetcp_info {
+	struct qed_dev_info common;
+
+	u8 port_id;  /* Physical port */
+	u8 num_cqs;
+};
+
+#define MAX_TID_BLOCKS_NVMETCP (512)
+struct qed_nvmetcp_tid {
+	u32 size;		/* In bytes per task */
+	u32 num_tids_per_block;
+	u8 *blocks[MAX_TID_BLOCKS_NVMETCP];
+};
+
+struct qed_nvmetcp_cb_ops {
+	struct qed_common_cb_ops common;
+};
+
+/**
+ * struct qed_nvmetcp_ops - qed NVMeTCP operations.
+ * @common:		common operations pointer
+ * @ll2:		light L2 operations pointer
+ * @fill_dev_info:	fills NVMeTCP specific information
+ *			@param cdev
+ *			@param info
+ *			@return 0 on success, otherwise error value.
+ * @register_ops:	register nvmetcp operations
+ *			@param cdev
+ *			@param ops - specified using qed_nvmetcp_cb_ops
+ *			@param cookie - driver private
+ * @start:		nvmetcp in FW
+ *			@param cdev
+ *			@param tasks - qed will fill information about tasks
+ *			return 0 on success, otherwise error value.
+ * @stop:		nvmetcp in FW
+ *			@param cdev
+ *			return 0 on success, otherwise error value.
+ */
+struct qed_nvmetcp_ops {
+	const struct qed_common_ops *common;
+
+	const struct qed_ll2_ops *ll2;
+
+	int (*fill_dev_info)(struct qed_dev *cdev,
+			     struct qed_dev_nvmetcp_info *info);
+
+	void (*register_ops)(struct qed_dev *cdev,
+			     struct qed_nvmetcp_cb_ops *ops, void *cookie);
+
+	int (*start)(struct qed_dev *cdev,
+		     struct qed_nvmetcp_tid *tasks,
+		     void *event_context, nvmetcp_event_cb_t async_event_cb);
+
+	int (*stop)(struct qed_dev *cdev);
+};
+
+const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void);
+void qed_put_nvmetcp_ops(void);
+#endif

@@ -49,6 +49,8 @@ extern const struct qed_common_ops qed_common_ops_pass;
 #define QED_MIN_WIDS		(4)
 #define QED_PF_DEMS_SIZE        (4)
 
+#define QED_LLH_DONT_CARE 0
+
 /* cau states */
 enum qed_coalescing_mode {
 	QED_COAL_MODE_DISABLE,

@@ -1005,4 +1007,12 @@ int qed_mfw_fill_tlv_data(struct qed_hwfn *hwfn,
 void qed_hw_info_set_offload_tc(struct qed_hw_info *p_info, u8 tc);
 
 void qed_periodic_db_rec_start(struct qed_hwfn *p_hwfn);
+
+int qed_llh_add_src_tcp_port_filter(struct qed_dev *cdev, u16 src_port);
+int qed_llh_add_dst_tcp_port_filter(struct qed_dev *cdev, u16 dest_port);
+
+void qed_llh_remove_src_tcp_port_filter(struct qed_dev *cdev, u16 src_port);
+void qed_llh_remove_dst_tcp_port_filter(struct qed_dev *cdev, u16 src_port);
+
+void qed_llh_clear_all_filters(struct qed_dev *cdev);
 #endif /* _QED_H */

@@ -5360,3 +5360,110 @@ void qed_set_fw_mac_addr(__le16 *fw_msb,
 	((u8 *)fw_lsb)[0] = mac[5];
 	((u8 *)fw_lsb)[1] = mac[4];
 }
+
+static int qed_llh_shadow_remove_all_filters(struct qed_dev *cdev, u8 ppfid)
+{
+	struct qed_llh_info *p_llh_info = cdev->p_llh_info;
+	struct qed_llh_filter_info *p_filters;
+	int rc;
+
+	rc = qed_llh_shadow_sanity(cdev, ppfid, 0, "remove_all");
+	if (rc)
+		return rc;
+
+	p_filters = p_llh_info->pp_filters[ppfid];
+	memset(p_filters, 0, NIG_REG_LLH_FUNC_FILTER_EN_SIZE *
+	       sizeof(*p_filters));
+
+	return 0;
+}
+
+int qed_abs_ppfid(struct qed_dev *cdev, u8 rel_ppfid, u8 *p_abs_ppfid)
+{
+	struct qed_llh_info *p_llh_info = cdev->p_llh_info;
+
+	if (rel_ppfid >= p_llh_info->num_ppfid) {
+		DP_NOTICE(cdev,
+			  "rel_ppfid %d is not valid, available indices are 0..%hhu\n",
+			  rel_ppfid, p_llh_info->num_ppfid - 1);
+
+		return -EINVAL;
+	}
+
+	*p_abs_ppfid = p_llh_info->ppfid_array[rel_ppfid];
+
+	return 0;
+}
+
+void qed_llh_clear_ppfid_filters(struct qed_dev *cdev, u8 ppfid)
+{
+	struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_ptt *p_ptt = qed_ptt_acquire(p_hwfn);
+	u8 filter_idx, abs_ppfid;
+	int rc = 0;
+
+	if (!p_ptt)
+		return;
+
+	if (!test_bit(QED_MF_LLH_PROTO_CLSS, &cdev->mf_bits) &&
+	    !test_bit(QED_MF_LLH_MAC_CLSS, &cdev->mf_bits))
+		goto out;
+
+	rc = qed_abs_ppfid(cdev, ppfid, &abs_ppfid);
+	if (rc)
+		goto out;
+
+	rc = qed_llh_shadow_remove_all_filters(cdev, ppfid);
+	if (rc)
+		goto out;
+
+	for (filter_idx = 0; filter_idx < NIG_REG_LLH_FUNC_FILTER_EN_SIZE;
+	     filter_idx++) {
+		rc = qed_llh_remove_filter(p_hwfn, p_ptt,
+					   abs_ppfid, filter_idx);
+		if (rc)
+			goto out;
+	}
+out:
+	qed_ptt_release(p_hwfn, p_ptt);
+}
+
+int qed_llh_add_src_tcp_port_filter(struct qed_dev *cdev, u16 src_port)
+{
+	return qed_llh_add_protocol_filter(cdev, 0,
+					   QED_LLH_FILTER_TCP_SRC_PORT,
+					   src_port, QED_LLH_DONT_CARE);
+}
+
+void qed_llh_remove_src_tcp_port_filter(struct qed_dev *cdev, u16 src_port)
+{
+	qed_llh_remove_protocol_filter(cdev, 0,
+				       QED_LLH_FILTER_TCP_SRC_PORT,
+				       src_port, QED_LLH_DONT_CARE);
+}
+
+int qed_llh_add_dst_tcp_port_filter(struct qed_dev *cdev, u16 dest_port)
+{
+	return qed_llh_add_protocol_filter(cdev, 0,
+					   QED_LLH_FILTER_TCP_DEST_PORT,
+					   QED_LLH_DONT_CARE, dest_port);
+}
+
+void qed_llh_remove_dst_tcp_port_filter(struct qed_dev *cdev, u16 dest_port)
+{
+	qed_llh_remove_protocol_filter(cdev, 0,
+				       QED_LLH_FILTER_TCP_DEST_PORT,
+				       QED_LLH_DONT_CARE, dest_port);
+}
+
+void qed_llh_clear_all_filters(struct qed_dev *cdev)
+{
+	u8 ppfid;
+
+	if (!test_bit(QED_MF_LLH_PROTO_CLSS, &cdev->mf_bits) &&
+	    !test_bit(QED_MF_LLH_MAC_CLSS, &cdev->mf_bits))
+		return;
+
+	for (ppfid = 0; ppfid < cdev->p_llh_info->num_ppfid; ppfid++)
+		qed_llh_clear_ppfid_filters(cdev, ppfid);
+}

@@ -844,6 +844,11 @@ static const struct qed_nvmetcp_ops qed_nvmetcp_ops_pass = {
 	.update_conn = &qed_nvmetcp_update_conn,
 	.destroy_conn = &qed_nvmetcp_destroy_conn,
 	.clear_sq = &qed_nvmetcp_clear_conn_sq,
+	.add_src_tcp_port_filter = &qed_llh_add_src_tcp_port_filter,
+	.remove_src_tcp_port_filter = &qed_llh_remove_src_tcp_port_filter,
+	.add_dst_tcp_port_filter = &qed_llh_add_dst_tcp_port_filter,
+	.remove_dst_tcp_port_filter = &qed_llh_remove_dst_tcp_port_filter,
+	.clear_all_filters = &qed_llh_clear_all_filters
 };
 
 const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void)

@@ -124,6 +124,20 @@ struct qed_nvmetcp_cb_ops {
  *			@param cdev
  *			@param handle - the connection handle.
  *			@return 0 on success, otherwise error value.
+ * @add_src_tcp_port_filter: Add source tcp port filter
+ *			@param cdev
+ *			@param src_port
+ * @remove_src_tcp_port_filter: Remove source tcp port filter
+ *			@param cdev
+ *			@param src_port
+ * @add_dst_tcp_port_filter: Add destination tcp port filter
+ *			@param cdev
+ *			@param dest_port
+ * @remove_dst_tcp_port_filter: Remove destination tcp port filter
+ *			@param cdev
+ *			@param dest_port
+ * @clear_all_filters: Clear all filters.
+ *			@param cdev
  */
 struct qed_nvmetcp_ops {
 	const struct qed_common_ops *common;

@@ -159,6 +173,16 @@ struct qed_nvmetcp_ops {
 	int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);
 
 	int (*clear_sq)(struct qed_dev *cdev, u32 handle);
+
+	int (*add_src_tcp_port_filter)(struct qed_dev *cdev, u16 src_port);
+
+	void (*remove_src_tcp_port_filter)(struct qed_dev *cdev, u16 src_port);
+
+	int (*add_dst_tcp_port_filter)(struct qed_dev *cdev, u16 dest_port);
+
+	void (*remove_dst_tcp_port_filter)(struct qed_dev *cdev, u16 dest_port);
+
+	void (*clear_all_filters)(struct qed_dev *cdev);
 };
 
 const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void);

@@ -259,6 +259,578 @@ static int qed_nvmetcp_start(struct qed_dev *cdev,
 	return 0;
 }
 
+static struct qed_hash_nvmetcp_con *qed_nvmetcp_get_hash(struct qed_dev *cdev,
+							 u32 handle)
+{
+	struct qed_hash_nvmetcp_con *hash_con = NULL;
+
+	if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
+		return NULL;
+
+	hash_for_each_possible(cdev->connections, hash_con, node, handle) {
+		if (hash_con->con->icid == handle)
+			break;
+	}
+
+	if (!hash_con || hash_con->con->icid != handle)
+		return NULL;
+
+	return hash_con;
+}
+
+static int qed_sp_nvmetcp_conn_offload(struct qed_hwfn *p_hwfn,
+				       struct qed_nvmetcp_conn *p_conn,
+				       enum spq_mode comp_mode,
+				       struct qed_spq_comp_cb *p_comp_addr)
+{
+	struct nvmetcp_spe_conn_offload *p_ramrod = NULL;
+	struct tcp_offload_params_opt2 *p_tcp2 = NULL;
+	struct qed_sp_init_data init_data = { 0 };
+	struct qed_spq_entry *p_ent = NULL;
+	dma_addr_t r2tq_pbl_addr;
+	dma_addr_t xhq_pbl_addr;
+	dma_addr_t uhq_pbl_addr;
+	u16 physical_q;
+	int rc = 0;
+	u32 dval;
+	u8 i;
+
+	/* Get SPQ entry */
+	init_data.cid = p_conn->icid;
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_OFFLOAD_CONN,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	p_ramrod = &p_ent->ramrod.nvmetcp_conn_offload;
+
+	/* Transmission PQ is the first of the PF */
+	physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
+	p_conn->physical_q0 = cpu_to_le16(physical_q);
+	p_ramrod->nvmetcp.physical_q0 = cpu_to_le16(physical_q);
+
+	/* nvmetcp Pure-ACK PQ */
+	physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
+	p_conn->physical_q1 = cpu_to_le16(physical_q);
+	p_ramrod->nvmetcp.physical_q1 = cpu_to_le16(physical_q);
+
+	p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+
+	DMA_REGPAIR_LE(p_ramrod->nvmetcp.sq_pbl_addr, p_conn->sq_pbl_addr);
+
+	r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
+	DMA_REGPAIR_LE(p_ramrod->nvmetcp.r2tq_pbl_addr, r2tq_pbl_addr);
+
+	xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
+	DMA_REGPAIR_LE(p_ramrod->nvmetcp.xhq_pbl_addr, xhq_pbl_addr);
+
+	uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
+	DMA_REGPAIR_LE(p_ramrod->nvmetcp.uhq_pbl_addr, uhq_pbl_addr);
+
+	p_ramrod->nvmetcp.flags = p_conn->offl_flags;
+	p_ramrod->nvmetcp.default_cq = p_conn->default_cq;
+	p_ramrod->nvmetcp.initial_ack = 0;
+
+	DMA_REGPAIR_LE(p_ramrod->nvmetcp.nvmetcp.cccid_itid_table_addr,
+		       p_conn->nvmetcp_cccid_itid_table_addr);
+	p_ramrod->nvmetcp.nvmetcp.cccid_max_range =
+		 cpu_to_le16(p_conn->nvmetcp_cccid_max_range);
+
+	p_tcp2 = &p_ramrod->tcp;
+
+	qed_set_fw_mac_addr(&p_tcp2->remote_mac_addr_hi,
+			    &p_tcp2->remote_mac_addr_mid,
+			    &p_tcp2->remote_mac_addr_lo, p_conn->remote_mac);
+	qed_set_fw_mac_addr(&p_tcp2->local_mac_addr_hi,
+			    &p_tcp2->local_mac_addr_mid,
+			    &p_tcp2->local_mac_addr_lo, p_conn->local_mac);
+
+	p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
+	p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
+
+	p_tcp2->ip_version = p_conn->ip_version;
+	for (i = 0; i < 4; i++) {
+		dval = p_conn->remote_ip[i];
+		p_tcp2->remote_ip[i] = cpu_to_le32(dval);
+		dval = p_conn->local_ip[i];
+		p_tcp2->local_ip[i] = cpu_to_le32(dval);
+	}
+
+	p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
+	p_tcp2->ttl = p_conn->ttl;
+	p_tcp2->tos_or_tc = p_conn->tos_or_tc;
+	p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
+	p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
+	p_tcp2->mss = cpu_to_le16(p_conn->mss);
+	p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
+	p_tcp2->connect_mode = p_conn->connect_mode;
+	p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
+	p_tcp2->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
+	p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
+	p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
+	p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
+
+	return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_nvmetcp_conn_update(struct qed_hwfn *p_hwfn,
+				      struct qed_nvmetcp_conn *p_conn,
+				      enum spq_mode comp_mode,
+				      struct qed_spq_comp_cb *p_comp_addr)
+{
+	struct nvmetcp_conn_update_ramrod_params *p_ramrod = NULL;
+	struct qed_spq_entry *p_ent = NULL;
+	struct qed_sp_init_data init_data;
+	int rc = -EINVAL;
+	u32 dval;
+
+	/* Get SPQ entry */
+	memset(&init_data, 0, sizeof(init_data));
+	init_data.cid = p_conn->icid;
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_UPDATE_CONN,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	p_ramrod = &p_ent->ramrod.nvmetcp_conn_update;
+	p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+	p_ramrod->flags = p_conn->update_flag;
+	p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
+	dval = p_conn->max_recv_pdu_length;
+	p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
+	dval = p_conn->max_send_pdu_length;
+	p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
+	dval = p_conn->first_seq_length;
+	p_ramrod->first_seq_length = cpu_to_le32(dval);
+
+	return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_nvmetcp_conn_terminate(struct qed_hwfn *p_hwfn,
+					 struct qed_nvmetcp_conn *p_conn,
+					 enum spq_mode comp_mode,
+					 struct qed_spq_comp_cb *p_comp_addr)
+{
+	struct nvmetcp_spe_conn_termination *p_ramrod = NULL;
+	struct qed_spq_entry *p_ent = NULL;
+	struct qed_sp_init_data init_data;
+	int rc = -EINVAL;
+
+	/* Get SPQ entry */
+	memset(&init_data, 0, sizeof(init_data));
+	init_data.cid = p_conn->icid;
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_TERMINATION_CONN,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	p_ramrod = &p_ent->ramrod.nvmetcp_conn_terminate;
+	p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+	p_ramrod->abortive = p_conn->abortive_dsconnect;
+
+	return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_nvmetcp_conn_clear_sq(struct qed_hwfn *p_hwfn,
+					struct qed_nvmetcp_conn *p_conn,
+					enum spq_mode comp_mode,
+					struct qed_spq_comp_cb *p_comp_addr)
+{
+	struct qed_spq_entry *p_ent = NULL;
+	struct qed_sp_init_data init_data;
+	int rc = -EINVAL;
+
+	/* Get SPQ entry */
+	memset(&init_data, 0, sizeof(init_data));
+	init_data.cid = p_conn->icid;
+	init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+	init_data.comp_mode = comp_mode;
+	init_data.p_comp_data = p_comp_addr;
+
+	rc = qed_sp_init_request(p_hwfn, &p_ent,
+				 NVMETCP_RAMROD_CMD_ID_CLEAR_SQ,
+				 PROTOCOLID_NVMETCP, &init_data);
+	if (rc)
+		return rc;
+
+	return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static void __iomem *qed_nvmetcp_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
+{
+	return (u8 __iomem *)p_hwfn->doorbells +
+			     qed_db_addr(cid, DQ_DEMS_LEGACY);
+}
+
+static int qed_nvmetcp_allocate_connection(struct qed_hwfn *p_hwfn,
+					   struct qed_nvmetcp_conn **p_out_conn)
+{
+	struct qed_chain_init_params params = {
+		.mode		= QED_CHAIN_MODE_PBL,
+		.intended_use	= QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+		.cnt_type	= QED_CHAIN_CNT_TYPE_U16,
+	};
+	struct qed_nvmetcp_pf_params *p_params = NULL;
+	struct qed_nvmetcp_conn *p_conn = NULL;
+	int rc = 0;
+
+	/* Try finding a free connection that can be used */
+	spin_lock_bh(&p_hwfn->p_nvmetcp_info->lock);
+	if (!list_empty(&p_hwfn->p_nvmetcp_info->free_list))
+		p_conn = list_first_entry(&p_hwfn->p_nvmetcp_info->free_list,
+					  struct qed_nvmetcp_conn, list_entry);
+	if (p_conn) {
+		list_del(&p_conn->list_entry);
+		spin_unlock_bh(&p_hwfn->p_nvmetcp_info->lock);
+		*p_out_conn = p_conn;
+
+		return 0;
+	}
+	spin_unlock_bh(&p_hwfn->p_nvmetcp_info->lock);
+
+	/* Need to allocate a new connection */
+	p_params = &p_hwfn->pf_params.nvmetcp_pf_params;
+
+	p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
+	if (!p_conn)
+		return -ENOMEM;
+
+	params.num_elems = p_params->num_r2tq_pages_in_ring *
+			   QED_CHAIN_PAGE_SIZE / sizeof(struct nvmetcp_wqe);
+	params.elem_size = sizeof(struct nvmetcp_wqe);
+
+	rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, &params);
+	if (rc)
+		goto nomem_r2tq;
+
+	params.num_elems = p_params->num_uhq_pages_in_ring *
+			   QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
+	params.elem_size = sizeof(struct iscsi_uhqe);
+
+	rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, &params);
+	if (rc)
+		goto nomem_uhq;
+
+	params.elem_size = sizeof(struct iscsi_xhqe);
+
+	rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, &params);
+	if (rc)
+		goto nomem;
+
+	p_conn->free_on_delete = true;
+	*p_out_conn = p_conn;
+
+	return 0;
+
+nomem:
+	qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
+nomem_uhq:
+	qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
+nomem_r2tq:
+	kfree(p_conn);
+
+	return -ENOMEM;
+}
+
+static int qed_nvmetcp_acquire_connection(struct qed_hwfn *p_hwfn,
+					  struct qed_nvmetcp_conn **p_out_conn)
+{
+	struct qed_nvmetcp_conn *p_conn = NULL;
+	int rc = 0;
+	u32 icid;
+
+	spin_lock_bh(&p_hwfn->p_nvmetcp_info->lock);
+	rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_NVMETCP, &icid);
+	spin_unlock_bh(&p_hwfn->p_nvmetcp_info->lock);
+
+	if (rc)
+		return rc;
+
+	rc = qed_nvmetcp_allocate_connection(p_hwfn, &p_conn);
+	if (rc) {
+		spin_lock_bh(&p_hwfn->p_nvmetcp_info->lock);
+		qed_cxt_release_cid(p_hwfn, icid);
+		spin_unlock_bh(&p_hwfn->p_nvmetcp_info->lock);
+
+		return rc;
+	}
+
+	p_conn->icid = icid;
+	p_conn->conn_id = (u16)icid;
+	p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
+	*p_out_conn = p_conn;
+
+	return rc;
+}
+
+static void qed_nvmetcp_release_connection(struct qed_hwfn *p_hwfn,
+					   struct qed_nvmetcp_conn *p_conn)
+{
+	spin_lock_bh(&p_hwfn->p_nvmetcp_info->lock);
+	list_add_tail(&p_conn->list_entry, &p_hwfn->p_nvmetcp_info->free_list);
+	qed_cxt_release_cid(p_hwfn, p_conn->icid);
+	spin_unlock_bh(&p_hwfn->p_nvmetcp_info->lock);
+}
+
+static void qed_nvmetcp_free_connection(struct qed_hwfn *p_hwfn,
+					struct qed_nvmetcp_conn *p_conn)
+{
+	qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
+	qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
+	qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
+
+	kfree(p_conn);
+}
+
+int qed_nvmetcp_alloc(struct qed_hwfn *p_hwfn)
+{
+	struct qed_nvmetcp_info *p_nvmetcp_info;
+
+	p_nvmetcp_info = kzalloc(sizeof(*p_nvmetcp_info), GFP_KERNEL);
+	if (!p_nvmetcp_info)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&p_nvmetcp_info->free_list);
+
+	p_hwfn->p_nvmetcp_info = p_nvmetcp_info;
+
+	return 0;
+}
+
+void qed_nvmetcp_setup(struct qed_hwfn *p_hwfn)
+{
+	spin_lock_init(&p_hwfn->p_nvmetcp_info->lock);
+}
+
+void qed_nvmetcp_free(struct qed_hwfn *p_hwfn)
+{
+	struct qed_nvmetcp_conn *p_conn = NULL;
+
+	if (!p_hwfn->p_nvmetcp_info)
+		return;
+
+	while (!list_empty(&p_hwfn->p_nvmetcp_info->free_list)) {
+		p_conn = list_first_entry(&p_hwfn->p_nvmetcp_info->free_list,
+					  struct qed_nvmetcp_conn, list_entry);
+		if (p_conn) {
+			list_del(&p_conn->list_entry);
+			qed_nvmetcp_free_connection(p_hwfn, p_conn);
+		}
+	}
+
+	kfree(p_hwfn->p_nvmetcp_info);
+	p_hwfn->p_nvmetcp_info = NULL;
+}
+
+static int qed_nvmetcp_acquire_conn(struct qed_dev *cdev,
+				    u32 *handle,
+				    u32 *fw_cid, void __iomem **p_doorbell)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+	int rc;
+
+	/* Allocate a hashed connection */
+	hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
+	if (!hash_con)
+		return -ENOMEM;
+
+	/* Acquire the connection */
+	rc = qed_nvmetcp_acquire_connection(QED_AFFIN_HWFN(cdev),
+					    &hash_con->con);
+	if (rc) {
+		DP_NOTICE(cdev, "Failed to acquire Connection\n");
+		kfree(hash_con);
+
+		return rc;
+	}
+
+	/* Added the connection to hash table */
+	*handle = hash_con->con->icid;
+	*fw_cid = hash_con->con->fw_cid;
+	hash_add(cdev->connections, &hash_con->node, *handle);
+
+	if (p_doorbell)
+		*p_doorbell = qed_nvmetcp_get_db_addr(QED_AFFIN_HWFN(cdev),
+						      *handle);
+
+	return 0;
+}
+
+static int qed_nvmetcp_release_conn(struct qed_dev *cdev, u32 handle)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+
+	hash_con = qed_nvmetcp_get_hash(cdev, handle);
+	if (!hash_con) {
+		DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+			  handle);
+
+		return -EINVAL;
+	}
+
+	hlist_del(&hash_con->node);
+	qed_nvmetcp_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
+	kfree(hash_con);
+
+	return 0;
+}
+
+static int qed_nvmetcp_offload_conn(struct qed_dev *cdev, u32 handle,
+				    struct qed_nvmetcp_params_offload *conn_info)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+	struct qed_nvmetcp_conn *con;
+
+	hash_con = qed_nvmetcp_get_hash(cdev, handle);
+	if (!hash_con) {
+		DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+			  handle);
+
+		return -EINVAL;
+	}
+
+	/* Update the connection with information from the params */
+	con = hash_con->con;
+
+	/* FW initializations */
+	con->layer_code = NVMETCP_SLOW_PATH_LAYER_CODE;
+	con->sq_pbl_addr = conn_info->sq_pbl_addr;
+	con->nvmetcp_cccid_max_range = conn_info->nvmetcp_cccid_max_range;
+	con->nvmetcp_cccid_itid_table_addr = conn_info->nvmetcp_cccid_itid_table_addr;
+	con->default_cq = conn_info->default_cq;
+
+	SET_FIELD(con->offl_flags, NVMETCP_CONN_OFFLOAD_PARAMS_TARGET_MODE, 0);
+	SET_FIELD(con->offl_flags, NVMETCP_CONN_OFFLOAD_PARAMS_NVMETCP_MODE, 1);
+	SET_FIELD(con->offl_flags, NVMETCP_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B, 1);
+
+	/* Networking and TCP stack initializations */
+	ether_addr_copy(con->local_mac, conn_info->src.mac);
+	ether_addr_copy(con->remote_mac, conn_info->dst.mac);
+	memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
+	memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
+	con->local_port = conn_info->src.port;
+	con->remote_port = conn_info->dst.port;
+	con->vlan_id = conn_info->vlan_id;
+
+	if (conn_info->timestamp_en)
+		SET_FIELD(con->tcp_flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 1);
+
+	if (conn_info->delayed_ack_en)
+		SET_FIELD(con->tcp_flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 1);
+
+	if (conn_info->tcp_keep_alive_en)
+		SET_FIELD(con->tcp_flags, TCP_OFFLOAD_PARAMS_OPT2_KA_EN, 1);
+
+	if (conn_info->ecn_en)
+		SET_FIELD(con->tcp_flags, TCP_OFFLOAD_PARAMS_OPT2_ECN_EN, 1);
+
+	con->ip_version = conn_info->ip_version;
+	con->flow_label = QED_TCP_FLOW_LABEL;
+	con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
+	con->ka_timeout = conn_info->ka_timeout;
+	con->ka_interval = conn_info->ka_interval;
+	con->max_rt_time = conn_info->max_rt_time;
+	con->ttl = conn_info->ttl;
+	con->tos_or_tc = conn_info->tos_or_tc;
+	con->mss = conn_info->mss;
+	con->cwnd = conn_info->cwnd;
+	con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
+	con->connect_mode = 0; /* TCP_CONNECT_ACTIVE */
+
+	return qed_sp_nvmetcp_conn_offload(QED_AFFIN_HWFN(cdev), con,
+					 QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_nvmetcp_update_conn(struct qed_dev *cdev,
+				   u32 handle,
+				   struct qed_nvmetcp_params_update *conn_info)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+	struct qed_nvmetcp_conn *con;
+
+	hash_con = qed_nvmetcp_get_hash(cdev, handle);
+	if (!hash_con) {
+		DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+			  handle);
+
+		return -EINVAL;
+	}
+
+	/* Update the connection with information from the params */
+	con = hash_con->con;
+
+	SET_FIELD(con->update_flag,
+		  ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T, 0);
+	SET_FIELD(con->update_flag,
+		  ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, 1);
+
+	if (conn_info->hdr_digest_en)
+		SET_FIELD(con->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, 1);
+
+	if (conn_info->data_digest_en)
+		SET_FIELD(con->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, 1);
+
+	/* Placeholder - initialize pfv, cpda, hpda */
+
+	con->max_seq_size = conn_info->max_io_size;
+	con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
+	con->max_send_pdu_length = conn_info->max_send_pdu_length;
+	con->first_seq_length = conn_info->max_io_size;
+
+	return qed_sp_nvmetcp_conn_update(QED_AFFIN_HWFN(cdev), con,
+					QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_nvmetcp_clear_conn_sq(struct qed_dev *cdev, u32 handle)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+
+	hash_con = qed_nvmetcp_get_hash(cdev, handle);
+	if (!hash_con) {
+		DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+			  handle);
+
+		return -EINVAL;
+	}
+
+	return qed_sp_nvmetcp_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
+					    QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_nvmetcp_destroy_conn(struct qed_dev *cdev,
+				    u32 handle, u8 abrt_conn)
+{
+	struct qed_hash_nvmetcp_con *hash_con;
+
+	hash_con = qed_nvmetcp_get_hash(cdev, handle);
+	if (!hash_con) {
+		DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+			  handle);
+
+		return -EINVAL;
+	}
+
+	hash_con->con->abortive_dsconnect = abrt_conn;
+
+	return qed_sp_nvmetcp_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
+					   QED_SPQ_MODE_EBLOCK, NULL);
+}
+
 static const struct qed_nvmetcp_ops qed_nvmetcp_ops_pass = {
 	.common = &qed_common_ops_pass,
 	.ll2 = &qed_ll2_ops_pass,