0216e537f7
Separate out the RDMA connection from the NVMf connection. For now, the RDMA connection is just embedded in the NVMf connection, but eventually they will have different lifetimes. Change-Id: I9407d94891e22090bff90b8415d88a4ac8c3e95e Signed-off-by: Ben Walker <benjamin.walker@intel.com>
90 lines
3.0 KiB
C
90 lines
3.0 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 "request.h"
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#include "spdk/nvmf_spec.h"
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struct spdk_nvmf_rdma_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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};
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/* Define the Admin Queue Rx/Tx Descriptors */
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struct nvme_qp_rx_desc {
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union nvmf_h2c_msg msg_buf;
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struct spdk_nvmf_conn *conn;
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struct ibv_mr *msg_buf_mr;
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struct ibv_sge recv_sgl;
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struct ibv_sge bb_sgl; /* must follow recv_sgl */
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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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uint32_t recv_bc;
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STAILQ_ENTRY(nvme_qp_rx_desc) link;
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};
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struct nvme_qp_tx_desc {
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union nvmf_c2h_msg msg_buf;
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struct spdk_nvmf_conn *conn;
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struct nvmf_request req_state;
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struct ibv_mr *msg_buf_mr;
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struct ibv_sge send_sgl;
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STAILQ_ENTRY(nvme_qp_tx_desc) link;
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};
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int nvmf_post_rdma_read(struct spdk_nvmf_conn *conn,
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struct nvme_qp_tx_desc *tx_desc);
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int nvmf_post_rdma_write(struct spdk_nvmf_conn *conn,
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struct nvme_qp_tx_desc *tx_desc);
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int nvmf_post_rdma_recv(struct spdk_nvmf_conn *conn,
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struct nvme_qp_rx_desc *rx_desc);
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int nvmf_post_rdma_send(struct spdk_nvmf_conn *conn,
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struct nvme_qp_tx_desc *tx_desc);
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int nvmf_rdma_init(void);
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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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#endif /* _NVMF_RDMA_H_ */
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