1ade6e1dc0
This essentially turns the current nesting (of RDMA conn inside NVMf conn) inside out. Now the transport owns the connection structure and allocates it when necessary. Change-Id: Ib5ca84e2a57b16741d84943a5b858e9c3297d44b Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
98 lines
3.2 KiB
C
98 lines
3.2 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_RDMA_H_
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#define _NVMF_RDMA_H_
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#include <infiniband/verbs.h>
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#include "nvmf_internal.h"
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#include "conn.h"
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#include "request.h"
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#include "spdk/nvmf_spec.h"
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#include "spdk/queue.h"
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struct spdk_nvmf_rdma_conn {
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struct spdk_nvmf_conn conn;
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struct rdma_cm_id *cm_id;
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struct ibv_context *ctx;
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struct ibv_comp_channel *comp_channel;
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struct ibv_cq *cq;
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struct ibv_qp *qp;
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uint16_t queue_depth;
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STAILQ_HEAD(, spdk_nvmf_rdma_request) rdma_reqs;
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};
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struct spdk_nvmf_rdma_request {
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struct spdk_nvmf_request req;
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STAILQ_ENTRY(spdk_nvmf_rdma_request) link;
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union nvmf_h2c_msg cmd;
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struct ibv_mr *cmd_mr;
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union nvmf_c2h_msg rsp;
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struct ibv_mr *rsp_mr;
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struct ibv_sge send_sgl;
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struct ibv_sge recv_sgl[2];
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struct ibv_mr *bb_mr;
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uint8_t *bb;
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uint32_t bb_len;
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};
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int spdk_nvmf_rdma_init(void);
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int spdk_nvmf_rdma_fini(void);
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int nvmf_post_rdma_read(struct spdk_nvmf_conn *conn,
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struct spdk_nvmf_request *req);
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int spdk_nvmf_rdma_request_complete(struct spdk_nvmf_conn *conn,
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struct spdk_nvmf_request *req);
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int spdk_nvmf_rdma_request_release(struct spdk_nvmf_conn *conn,
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struct spdk_nvmf_request *req);
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int spdk_nvmf_rdma_alloc_reqs(struct spdk_nvmf_conn *conn);
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void spdk_nvmf_rdma_free_reqs(struct spdk_nvmf_conn *conn);
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void spdk_nvmf_rdma_free_req(struct spdk_nvmf_request *req);
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void nvmf_rdma_conn_cleanup(struct spdk_nvmf_conn *conn);
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int nvmf_acceptor_start(void);
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void nvmf_acceptor_stop(void);
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int nvmf_check_rdma_completions(struct spdk_nvmf_conn *conn);
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#endif /* _NVMF_RDMA_H_ */
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