2cb8321a35
The NVMf target set the maximum data transfer size(MDTS) to the default value of 128KB now, and the initiator driver will read the value and set it to the block layer, so each command sent from initiator will not runoff 128KB. Change-Id: I1d4f259e887b2fc70c7f1c5406c07c58f7fc9b8d Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
127 lines
4.3 KiB
C
127 lines
4.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __NVMF_INTERNAL_H__
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#define __NVMF_INTERNAL_H__
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <pthread.h>
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#include "spdk/nvmf_spec.h"
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#include "spdk/assert.h"
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#include "spdk/queue.h"
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#define nvmf_min(a,b) (((a)<(b))?(a):(b))
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#define DEFAULT_BB_SIZE (128 * 1024)
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/*
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* NVMf target supports a maximum transfer size that is equal to
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* a single allocated bounce buffer per request.
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*/
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#define SPDK_NVMF_MAX_RECV_DATA_TRANSFER_SIZE DEFAULT_BB_SIZE
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#define SPDK_NVMF_DEFAULT_NUM_SESSIONS_PER_LCORE 1
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#define SPDK_NVMF_DEFAULT_NODEBASE "nqn.2016-06.io.spdk"
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#define SPDK_NVMF_DEFAULT_MAX_SESSIONS_PER_SUBSYSTEM 1
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#define SPDK_NVMF_DEFAULT_MAX_QUEUE_DEPTH 128
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#define SPDK_NVMF_DEFAULT_MAX_CONNECTIONS_PER_SESSION 4
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#define SPDK_NVMF_DEFAULT_SIN_PORT ((uint16_t)4420)
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#define OBJECT_NVMF_IO 0x30
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#define TRACE_GROUP_NVMF 0x3
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#define TRACE_NVMF_IO_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x0)
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#define TRACE_RDMA_READ_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x1)
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#define TRACE_RDMA_WRITE_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x2)
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#define TRACE_RDMA_READ_COMPLETE SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x3)
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#define TRACE_RDMA_WRITE_COMPLETE SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x4)
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#define TRACE_NVMF_LIB_READ_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x5)
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#define TRACE_NVMF_LIB_WRITE_START SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x6)
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#define TRACE_NVMF_LIB_COMPLETE SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x7)
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#define TRACE_NVMF_IO_COMPLETE SPDK_TPOINT_ID(TRACE_GROUP_NVMF, 0x8)
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#define NVMF_CNTLID_SUBS_SHIFT 8
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/*
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* Some NVMe command definitions not provided in the nvme_spec.h file
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*/
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/* read command dword 12 */
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struct __attribute__((packed)) nvme_read_cdw12 {
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uint16_t nlb; /* number of logical blocks */
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uint16_t rsvd : 10;
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uint8_t prinfo : 4; /* protection information field */
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uint8_t fua : 1; /* force unit access */
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uint8_t lr : 1; /* limited retry */
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};
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/* read command dword 13 */
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struct __attribute__((packed)) nvme_read_cdw13 {
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uint8_t dsm_af : 4; /* access frequency */
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uint8_t dsm_lat : 2; /* access latency */
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uint8_t dsm_seq : 1; /* sequential request */
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uint8_t dsm_inc : 1; /* incompressible */
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uint8_t rsvd[3];
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};
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struct spdk_nvmf_globals {
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char *nodebase;
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pthread_mutex_t mutex;
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int MaxSessionsPerSubsystem;
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int MaxQueueDepth;
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int MaxConnectionsPerSession;
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struct rte_mempool *nvme_request_pool;
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uint16_t sin_port;
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};
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void
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nvmf_complete_cmd(void *rsp, const struct spdk_nvme_cpl *cmp);
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int nvmf_tgt_init(char *nodebase, int max_sessions, int max_queue_depth,
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int max_conn_per_sess);
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int nvmf_initialize(void);
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void nvmf_shutdown(void);
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extern struct spdk_nvmf_globals g_nvmf_tgt;
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#endif /* __NVMF_INTERNAL_H__ */
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