qed: Add NVMeTCP Offload IO Level FW Initializations

This patch introduces the NVMeTCP FW initializations which is used
to initialize the IO level configuration into a per IO HW
resource ("task") as part of the IO path flow.

This includes:
- Write IO FW initialization
- Read IO FW initialization.
- IC-Req and IC-Resp FW exchange.
- FW Cleanup flow (Flush IO).

Acked-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/qed/nvmetcp_common.h b/include/linux/qed/nvmetcp_common.h
index ad745a9c2264..5a2ab0606308 100644
--- a/include/linux/qed/nvmetcp_common.h
+++ b/include/linux/qed/nvmetcp_common.h
@@ -5,6 +5,7 @@
 #define __NVMETCP_COMMON__
 
 #include "tcp_common.h"
+#include <linux/nvme-tcp.h>
 
 #define NVMETCP_SLOW_PATH_LAYER_CODE (6)
 #define NVMETCP_WQE_NUM_SGES_SLOWIO (0xf)
diff --git a/include/linux/qed/qed_nvmetcp_if.h b/include/linux/qed/qed_nvmetcp_if.h
index 606427ebb63c..14671bc19ed1 100644
--- a/include/linux/qed/qed_nvmetcp_if.h
+++ b/include/linux/qed/qed_nvmetcp_if.h
@@ -9,6 +9,9 @@
 #include <linux/qed/nvmetcp_common.h>
 
 #define QED_NVMETCP_MAX_IO_SIZE	0x800000
+#define QED_NVMETCP_CMN_HDR_SIZE (sizeof(struct nvme_tcp_hdr))
+#define QED_NVMETCP_CMD_HDR_SIZE (sizeof(struct nvme_tcp_cmd_pdu))
+#define QED_NVMETCP_NON_IO_HDR_SIZE ((QED_NVMETCP_CMN_HDR_SIZE + 16))
 
 typedef int (*nvmetcp_event_cb_t) (void *context,
 				   u8 fw_event_code, void *fw_handle);
@@ -213,6 +216,23 @@ struct qed_nvmetcp_ops {
 	void (*remove_dst_tcp_port_filter)(struct qed_dev *cdev, u16 dest_port);
 
 	void (*clear_all_filters)(struct qed_dev *cdev);
+
+	void (*init_read_io)(struct nvmetcp_task_params *task_params,
+			     struct nvme_tcp_cmd_pdu *cmd_pdu_header,
+			     struct nvme_command *nvme_cmd,
+			     struct storage_sgl_task_params *sgl_task_params);
+
+	void (*init_write_io)(struct nvmetcp_task_params *task_params,
+			      struct nvme_tcp_cmd_pdu *cmd_pdu_header,
+			      struct nvme_command *nvme_cmd,
+			      struct storage_sgl_task_params *sgl_task_params);
+
+	void (*init_icreq_exchange)(struct nvmetcp_task_params *task_params,
+				    struct nvme_tcp_icreq_pdu *init_conn_req_pdu_hdr,
+				    struct storage_sgl_task_params *tx_sgl_task_params,
+				    struct storage_sgl_task_params *rx_sgl_task_params);
+
+	void (*init_task_cleanup)(struct nvmetcp_task_params *task_params);
 };
 
 const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void);