Re: [RFC PATCH v4 06/27] qed: Add NVMeTCP Offload IO Level FW Initializations
From: Shai Malin <hidden>
Date: 2021-05-04 16:28:57
Also in:
linux-nvme
On 5/2/21 2:25 PM, Hannes Reinecke wrote:
On 4/29/21 9:09 PM, Shai Malin wrote:quoted
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 <redacted> Signed-off-by: Prabhakar Kushwaha <redacted> Signed-off-by: Omkar Kulkarni <redacted> Signed-off-by: Shai Malin <redacted> Signed-off-by: Michal Kalderon <mkalderon@marvell.com> Signed-off-by: Ariel Elior <redacted> --- drivers/net/ethernet/qlogic/qed/Makefile | 5 +- drivers/net/ethernet/qlogic/qed/qed_nvmetcp.c | 7 +- .../qlogic/qed/qed_nvmetcp_fw_funcs.c | 372 ++++++++++++++++++ .../qlogic/qed/qed_nvmetcp_fw_funcs.h | 43 ++ include/linux/qed/nvmetcp_common.h | 3 + include/linux/qed/qed_nvmetcp_if.h | 17 + 6 files changed, 445 insertions(+), 2 deletions(-) create mode 100644 drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.c create mode 100644 drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.hdiff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile index 7cb0db67ba5b..0d9c2fe0245d 100644 --- a/drivers/net/ethernet/qlogic/qed/Makefile +++ b/drivers/net/ethernet/qlogic/qed/Makefile@@ -28,7 +28,10 @@ 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-$(CONFIG_QED_NVMETCP) += \ + qed_nvmetcp.o \ + qed_nvmetcp_fw_funcs.o \ + qed_nvmetcp_ip_services.o qed-$(CONFIG_QED_RDMA) += \ qed_iwarp.o \diff --git a/drivers/net/ethernet/qlogic/qed/qed_nvmetcp.c b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp.c index 1e2eb6dcbd6e..434363f8b5c0 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_nvmetcp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp.c@@ -27,6 +27,7 @@ #include "qed_mcp.h" #include "qed_sp.h" #include "qed_reg_addr.h" +#include "qed_nvmetcp_fw_funcs.h" static int qed_nvmetcp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, u16 echo, union event_ring_data *data,@@ -848,7 +849,11 @@ static const struct qed_nvmetcp_ops qed_nvmetcp_ops_pass = { .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 + .clear_all_filters = &qed_llh_clear_all_filters, + .init_read_io = &init_nvmetcp_host_read_task, + .init_write_io = &init_nvmetcp_host_write_task, + .init_icreq_exchange = &init_nvmetcp_init_conn_req_task, + .init_task_cleanup = &init_cleanup_task_nvmetcp }; const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void)diff --git a/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.c b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.c new file mode 100644 index 000000000000..8485ad678284 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.c@@ -0,0 +1,372 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +/* Copyright 2021 Marvell. All rights reserved. */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/mm.h> +#include <linux/types.h> +#include <asm/byteorder.h> +#include <linux/qed/common_hsi.h> +#include <linux/qed/storage_common.h> +#include <linux/qed/nvmetcp_common.h> +#include <linux/qed/qed_nvmetcp_if.h> +#include "qed_nvmetcp_fw_funcs.h" + +#define NVMETCP_NUM_SGES_IN_CACHE 0x4 + +bool nvmetcp_is_slow_sgl(u16 num_sges, bool small_mid_sge) +{ + return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge); +} + +void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params, + struct scsi_cached_sges *ctx_data_desc, + struct storage_sgl_task_params *sgl_params) +{ + u8 num_sges_to_init = (u8)(sgl_params->num_sges > NVMETCP_NUM_SGES_IN_CACHE ? + NVMETCP_NUM_SGES_IN_CACHE : sgl_params->num_sges); + u8 sge_index; + + /* sgl params */ + ctx_sgl_params->sgl_addr.lo = cpu_to_le32(sgl_params->sgl_phys_addr.lo); + ctx_sgl_params->sgl_addr.hi = cpu_to_le32(sgl_params->sgl_phys_addr.hi); + ctx_sgl_params->sgl_total_length = cpu_to_le32(sgl_params->total_buffer_size); + ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_params->num_sges); + + for (sge_index = 0; sge_index < num_sges_to_init; sge_index++) { + ctx_data_desc->sge[sge_index].sge_addr.lo = + cpu_to_le32(sgl_params->sgl[sge_index].sge_addr.lo); + ctx_data_desc->sge[sge_index].sge_addr.hi = + cpu_to_le32(sgl_params->sgl[sge_index].sge_addr.hi); + ctx_data_desc->sge[sge_index].sge_len = + cpu_to_le32(sgl_params->sgl[sge_index].sge_len); + } +} + +static inline u32 calc_rw_task_size(struct nvmetcp_task_params *task_params, + enum nvmetcp_task_type task_type) +{ + u32 io_size; + + if (task_type == NVMETCP_TASK_TYPE_HOST_WRITE) + io_size = task_params->tx_io_size; + else + io_size = task_params->rx_io_size; + + if (unlikely(!io_size)) + return 0; + + return io_size; +} + +static inline void init_sqe(struct nvmetcp_task_params *task_params, + struct storage_sgl_task_params *sgl_task_params, + enum nvmetcp_task_type task_type) +{ + if (!task_params->sqe) + return; + + memset(task_params->sqe, 0, sizeof(*task_params->sqe)); + task_params->sqe->task_id = cpu_to_le16(task_params->itid); + + switch (task_type) { + case NVMETCP_TASK_TYPE_HOST_WRITE: { + u32 buf_size = 0; + u32 num_sges = 0; + + SET_FIELD(task_params->sqe->contlen_cdbsize, + NVMETCP_WQE_CDB_SIZE_OR_NVMETCP_CMD, 1); + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_WQE_TYPE, + NVMETCP_WQE_TYPE_NORMAL); + if (task_params->tx_io_size) { + if (task_params->send_write_incapsule) + buf_size = calc_rw_task_size(task_params, task_type); + + if (nvmetcp_is_slow_sgl(sgl_task_params->num_sges, + sgl_task_params->small_mid_sge)) + num_sges = NVMETCP_WQE_NUM_SGES_SLOWIO; + else + num_sges = min((u16)sgl_task_params->num_sges, + (u16)SCSI_NUM_SGES_SLOW_SGL_THR); + } + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_NUM_SGES, num_sges); + SET_FIELD(task_params->sqe->contlen_cdbsize, NVMETCP_WQE_CONT_LEN, buf_size); + } break; + + case NVMETCP_TASK_TYPE_HOST_READ: { + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_WQE_TYPE, + NVMETCP_WQE_TYPE_NORMAL); + SET_FIELD(task_params->sqe->contlen_cdbsize, + NVMETCP_WQE_CDB_SIZE_OR_NVMETCP_CMD, 1); + } break; + + case NVMETCP_TASK_TYPE_INIT_CONN_REQUEST: { + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_WQE_TYPE, + NVMETCP_WQE_TYPE_MIDDLE_PATH); + + if (task_params->tx_io_size) { + SET_FIELD(task_params->sqe->contlen_cdbsize, NVMETCP_WQE_CONT_LEN, + task_params->tx_io_size); + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_NUM_SGES, + min((u16)sgl_task_params->num_sges, + (u16)SCSI_NUM_SGES_SLOW_SGL_THR)); + } + } break; + + case NVMETCP_TASK_TYPE_CLEANUP: + SET_FIELD(task_params->sqe->flags, NVMETCP_WQE_WQE_TYPE, + NVMETCP_WQE_TYPE_TASK_CLEANUP); + + default: + break; + } +} + +/* The following function initializes of NVMeTCP task params */ +static inline void +init_nvmetcp_task_params(struct e5_nvmetcp_task_context *context, + struct nvmetcp_task_params *task_params, + enum nvmetcp_task_type task_type) +{ + context->ystorm_st_context.state.cccid = task_params->host_cccid; + SET_FIELD(context->ustorm_st_context.error_flags, USTORM_NVMETCP_TASK_ST_CTX_NVME_TCP, 1); + context->ustorm_st_context.nvme_tcp_opaque_lo = cpu_to_le32(task_params->opq.lo); + context->ustorm_st_context.nvme_tcp_opaque_hi = cpu_to_le32(task_params->opq.hi); +} + +/* The following function initializes default values to all tasks */ +static inline void +init_default_nvmetcp_task(struct nvmetcp_task_params *task_params, void *pdu_header, + enum nvmetcp_task_type task_type) +{ + struct e5_nvmetcp_task_context *context = task_params->context; + const u8 val_byte = context->mstorm_ag_context.cdu_validation; + u8 dw_index; + + memset(context, 0, sizeof(*context)); + + init_nvmetcp_task_params(context, task_params, + (enum nvmetcp_task_type)task_type); + + if (task_type == NVMETCP_TASK_TYPE_HOST_WRITE || + task_type == NVMETCP_TASK_TYPE_HOST_READ) { + for (dw_index = 0; dw_index < QED_NVMETCP_CMD_HDR_SIZE / 4; dw_index++) + context->ystorm_st_context.pdu_hdr.task_hdr.reg[dw_index] = + cpu_to_le32(((u32 *)pdu_header)[dw_index]); + } else { + for (dw_index = 0; dw_index < QED_NVMETCP_CMN_HDR_SIZE / 4; dw_index++) + context->ystorm_st_context.pdu_hdr.task_hdr.reg[dw_index] = + cpu_to_le32(((u32 *)pdu_header)[dw_index]); + } +And this is what I meant. You are twiddling with the bytes already, so why bother with a separate struct at all?
We agree, will be fixed in V5.
quoted
+ /* M-Storm Context: */ + context->mstorm_ag_context.cdu_validation = val_byte; + context->mstorm_st_context.task_type = (u8)(task_type); + context->mstorm_ag_context.task_cid = cpu_to_le16(task_params->conn_icid); + + /* Ustorm Context: */ + SET_FIELD(context->ustorm_ag_context.flags1, E5_USTORM_NVMETCP_TASK_AG_CTX_R2T2RECV, 1); + context->ustorm_st_context.task_type = (u8)(task_type); + context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number; + context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid); +} + +/* The following function initializes the U-Storm Task Contexts */ +static inline void +init_ustorm_task_contexts(struct ustorm_nvmetcp_task_st_ctx *ustorm_st_context, + struct e5_ustorm_nvmetcp_task_ag_ctx *ustorm_ag_context, + u32 remaining_recv_len, + u32 expected_data_transfer_len, u8 num_sges, + bool tx_dif_conn_err_en) +{ + /* Remaining data to be received in bytes. Used in validations*/ + ustorm_st_context->rem_rcv_len = cpu_to_le32(remaining_recv_len); + ustorm_ag_context->exp_data_acked = cpu_to_le32(expected_data_transfer_len); + ustorm_st_context->exp_data_transfer_len = cpu_to_le32(expected_data_transfer_len); + SET_FIELD(ustorm_st_context->reg1.reg1_map, NVMETCP_REG1_NUM_SGES, num_sges); + SET_FIELD(ustorm_ag_context->flags2, E5_USTORM_NVMETCP_TASK_AG_CTX_DIF_ERROR_CF_EN, + tx_dif_conn_err_en ? 1 : 0); +} + +/* The following function initializes Local Completion Contexts: */ +static inline void +set_local_completion_context(struct e5_nvmetcp_task_context *context) +{ + SET_FIELD(context->ystorm_st_context.state.flags, + YSTORM_NVMETCP_TASK_STATE_LOCAL_COMP, 1); + SET_FIELD(context->ustorm_st_context.flags, + USTORM_NVMETCP_TASK_ST_CTX_LOCAL_COMP, 1); +} + +/* Common Fastpath task init function: */ +static inline void +init_rw_nvmetcp_task(struct nvmetcp_task_params *task_params, + enum nvmetcp_task_type task_type, + struct nvmetcp_conn_params *conn_params, void *pdu_header, + struct storage_sgl_task_params *sgl_task_params) +{ + struct e5_nvmetcp_task_context *context = task_params->context; + u32 task_size = calc_rw_task_size(task_params, task_type); + u32 exp_data_transfer_len = conn_params->max_burst_length; + bool slow_io = false; + u8 num_sges = 0; + + init_default_nvmetcp_task(task_params, pdu_header, task_type); + + /* Tx/Rx: */ + if (task_params->tx_io_size) { + /* if data to transmit: */ + init_scsi_sgl_context(&context->ystorm_st_context.state.sgl_params, + &context->ystorm_st_context.state.data_desc, + sgl_task_params); + slow_io = nvmetcp_is_slow_sgl(sgl_task_params->num_sges, + sgl_task_params->small_mid_sge); + num_sges = + (u8)(!slow_io ? min((u32)sgl_task_params->num_sges, + (u32)SCSI_NUM_SGES_SLOW_SGL_THR) : + NVMETCP_WQE_NUM_SGES_SLOWIO); + if (slow_io) { + SET_FIELD(context->ystorm_st_context.state.flags, + YSTORM_NVMETCP_TASK_STATE_SLOW_IO, 1); + } + } else if (task_params->rx_io_size) { + /* if data to receive: */ + init_scsi_sgl_context(&context->mstorm_st_context.sgl_params, + &context->mstorm_st_context.data_desc, + sgl_task_params); + num_sges = + (u8)(!nvmetcp_is_slow_sgl(sgl_task_params->num_sges, + sgl_task_params->small_mid_sge) ? + min((u32)sgl_task_params->num_sges, + (u32)SCSI_NUM_SGES_SLOW_SGL_THR) : + NVMETCP_WQE_NUM_SGES_SLOWIO); + context->mstorm_st_context.rem_task_size = cpu_to_le32(task_size); + } + + /* Ustorm context: */ + if (exp_data_transfer_len > task_size) + /* The size of the transmitted task*/ + exp_data_transfer_len = task_size; + init_ustorm_task_contexts(&context->ustorm_st_context, + &context->ustorm_ag_context, + /* Remaining Receive length is the Task Size */ + task_size, + /* The size of the transmitted task */ + exp_data_transfer_len, + /* num_sges */ + num_sges, + false); + + /* Set exp_data_acked */ + if (task_type == NVMETCP_TASK_TYPE_HOST_WRITE) { + if (task_params->send_write_incapsule) + context->ustorm_ag_context.exp_data_acked = task_size; + else + context->ustorm_ag_context.exp_data_acked = 0; + } else if (task_type == NVMETCP_TASK_TYPE_HOST_READ) { + context->ustorm_ag_context.exp_data_acked = 0; + } + + context->ustorm_ag_context.exp_cont_len = 0; + + init_sqe(task_params, sgl_task_params, task_type); +} + +static void +init_common_initiator_read_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params) +{ + init_rw_nvmetcp_task(task_params, NVMETCP_TASK_TYPE_HOST_READ, + conn_params, cmd_pdu_header, sgl_task_params); +} + +void init_nvmetcp_host_read_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params) +{ + init_common_initiator_read_task(task_params, conn_params, + (void *)cmd_pdu_header, sgl_task_params); +} + +static void +init_common_initiator_write_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params) +{ + init_rw_nvmetcp_task(task_params, NVMETCP_TASK_TYPE_HOST_WRITE, + conn_params, cmd_pdu_header, sgl_task_params); +} + +void init_nvmetcp_host_write_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params) +{ + init_common_initiator_write_task(task_params, conn_params, + (void *)cmd_pdu_header, + sgl_task_params); +} + +static void +init_common_login_request_task(struct nvmetcp_task_params *task_params, + void *login_req_pdu_header, + struct storage_sgl_task_params *tx_sgl_task_params, + struct storage_sgl_task_params *rx_sgl_task_params) +{ + struct e5_nvmetcp_task_context *context = task_params->context; + + init_default_nvmetcp_task(task_params, (void *)login_req_pdu_header, + NVMETCP_TASK_TYPE_INIT_CONN_REQUEST); + + /* Ustorm Context: */ + init_ustorm_task_contexts(&context->ustorm_st_context, + &context->ustorm_ag_context, + + /* Remaining Receive length is the Task Size */ + task_params->rx_io_size ? + rx_sgl_task_params->total_buffer_size : 0, + + /* The size of the transmitted task */ + task_params->tx_io_size ? + tx_sgl_task_params->total_buffer_size : 0, + 0, /* num_sges */ + 0); /* tx_dif_conn_err_en */ + + /* SGL context: */ + if (task_params->tx_io_size) + init_scsi_sgl_context(&context->ystorm_st_context.state.sgl_params, + &context->ystorm_st_context.state.data_desc, + tx_sgl_task_params); + if (task_params->rx_io_size) + init_scsi_sgl_context(&context->mstorm_st_context.sgl_params, + &context->mstorm_st_context.data_desc, + rx_sgl_task_params); + + context->mstorm_st_context.rem_task_size = + cpu_to_le32(task_params->rx_io_size ? + rx_sgl_task_params->total_buffer_size : 0); + + init_sqe(task_params, tx_sgl_task_params, NVMETCP_TASK_TYPE_INIT_CONN_REQUEST); +} + +/* The following function initializes Login task in Host mode: */ +void init_nvmetcp_init_conn_req_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_init_conn_req_hdr *init_conn_req_pdu_hdr, + struct storage_sgl_task_params *tx_sgl_task_params, + struct storage_sgl_task_params *rx_sgl_task_params) +{ + init_common_login_request_task(task_params, init_conn_req_pdu_hdr, + tx_sgl_task_params, rx_sgl_task_params); +} + +void init_cleanup_task_nvmetcp(struct nvmetcp_task_params *task_params) +{ + init_sqe(task_params, NULL, NVMETCP_TASK_TYPE_CLEANUP); +}diff --git a/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.h b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.h new file mode 100644 index 000000000000..3a8c74356c4c --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_fw_funcs.h@@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* Copyright 2021 Marvell. All rights reserved. */ + +#ifndef _QED_NVMETCP_FW_FUNCS_H +#define _QED_NVMETCP_FW_FUNCS_H + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/mm.h> +#include <linux/types.h> +#include <asm/byteorder.h> +#include <linux/qed/common_hsi.h> +#include <linux/qed/storage_common.h> +#include <linux/qed/nvmetcp_common.h> +#include <linux/qed/qed_nvmetcp_if.h> + +#if IS_ENABLED(CONFIG_QED_NVMETCP) + +void init_nvmetcp_host_read_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params); + +void init_nvmetcp_host_write_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params); + +void init_nvmetcp_init_conn_req_task(struct nvmetcp_task_params *task_params, + struct nvmetcp_init_conn_req_hdr *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_cleanup_task_nvmetcp(struct nvmetcp_task_params *task_params); + +#else /* IS_ENABLED(CONFIG_QED_NVMETCP) */ + +#endif /* IS_ENABLED(CONFIG_QED_NVMETCP) */ + +#endif /* _QED_NVMETCP_FW_FUNCS_H */diff --git a/include/linux/qed/nvmetcp_common.h b/include/linux/qed/nvmetcp_common.h index dda7a785c321..c0023bb185dd 100644 --- a/include/linux/qed/nvmetcp_common.h +++ b/include/linux/qed/nvmetcp_common.h@@ -9,6 +9,9 @@ #define NVMETCP_SLOW_PATH_LAYER_CODE (6) #define NVMETCP_WQE_NUM_SGES_SLOWIO (0xf) +#define QED_NVMETCP_CMD_HDR_SIZE 72 +#define QED_NVMETCP_CMN_HDR_SIZE 24 + /* NVMeTCP firmware function init parameters */ struct nvmetcp_spe_func_init { __le16 half_way_close_timeout;diff --git a/include/linux/qed/qed_nvmetcp_if.h b/include/linux/qed/qed_nvmetcp_if.h index 04e90dc42c12..d971be84f804 100644 --- a/include/linux/qed/qed_nvmetcp_if.h +++ b/include/linux/qed/qed_nvmetcp_if.h@@ -220,6 +220,23 @@ 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 nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params); + + void (*init_write_io)(struct nvmetcp_task_params *task_params, + struct nvmetcp_conn_params *conn_params, + struct nvmetcp_cmd_capsule_hdr *cmd_pdu_header, + struct storage_sgl_task_params *sgl_task_params); + + void (*init_icreq_exchange)(struct nvmetcp_task_params *task_params, + struct nvmetcp_init_conn_req_hdr *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);Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer