268aacb24a
This API is a wrapper for rdma_accept which allows to remove spdk_rdma_qp_init_attr::initiator_side. Change-Id: Iba2be5e74e537c498fb11c939c922b2bbda95309 Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2908 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Broadcom CI Community-CI: Mellanox Build Bot Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
118 lines
4.4 KiB
C
118 lines
4.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation. All rights reserved.
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* Copyright (c) Mellanox Technologies LTD. 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 SPDK_RDMA_H
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#define SPDK_RDMA_H
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#include <infiniband/verbs.h>
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#include <rdma/rdma_cma.h>
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#include <rdma/rdma_verbs.h>
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struct spdk_rdma_qp_init_attr {
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void *qp_context;
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struct ibv_cq *send_cq;
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struct ibv_cq *recv_cq;
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struct ibv_srq *srq;
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struct ibv_qp_cap cap;
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struct ibv_pd *pd;
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};
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struct spdk_rdma_send_wr_list {
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struct ibv_send_wr *first;
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struct ibv_send_wr *last;
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};
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struct spdk_rdma_qp {
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struct ibv_qp *qp;
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struct rdma_cm_id *cm_id;
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struct spdk_rdma_send_wr_list send_wrs;
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};
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/**
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* Create RDMA provider specific qpair
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* \param cm_id Pointer to RDMACM cm_id
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* \param qp_attr Pointer to qpair init attributes
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* \return Pointer to a newly created qpair on success or NULL on failure
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*/
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struct spdk_rdma_qp *spdk_rdma_qp_create(struct rdma_cm_id *cm_id,
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struct spdk_rdma_qp_init_attr *qp_attr);
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/**
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* Accept a connection request. Called by the passive side (NVMEoF target)
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* \param spdk_rdma_qp Pointer to a qpair
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* \param conn_param Optional information needed to establish the connection
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* \return 0 on success, errno on failure
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*/
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int spdk_rdma_qp_accept(struct spdk_rdma_qp *spdk_rdma_qp, struct rdma_conn_param *conn_param);
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/**
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* Complete the connection process, must be called by the active
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* side (NVMEoF initiator) upon receipt RDMA_CM_EVENT_CONNECT_RESPONSE
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* \param spdk_rdma_qp Pointer to a qpair
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* \return 0 on success, errno on failure
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*/
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int spdk_rdma_qp_complete_connect(struct spdk_rdma_qp *spdk_rdma_qp);
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/**
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* Destroy RDMA provider specific qpair
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* \param spdk_rdma_qp Pointer to qpair to be destroyed
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*/
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void spdk_rdma_qp_destroy(struct spdk_rdma_qp *spdk_rdma_qp);
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/**
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* Disconnect a connection and transition assoiciated qpair to error state.
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* Generates RDMA_CM_EVENT_DISCONNECTED on both connection sides
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* \param spdk_rdma_qp Pointer to qpair to be destroyed
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*/
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int spdk_rdma_qp_disconnect(struct spdk_rdma_qp *spdk_rdma_qp);
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/**
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* Append the given send wr structure to the qpair's outstanding sends list.
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* This function accepts either a single Work Request or the first WR in a linked list.
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*
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* \param spdk_rdma_qp Pointer to SPDK RDMA qpair
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* \param first Pointer to the first Work Request
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* \return true if there were no outstanding WRs before, false otherwise
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*/
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bool spdk_rdma_qp_queue_send_wrs(struct spdk_rdma_qp *spdk_rdma_qp, struct ibv_send_wr *first);
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/**
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* Submit all queued Work Request
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* \param spdk_rdma_qp Pointer to SPDK RDMA qpair
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* \param bad_wr Stores a pointer to the first failed WR if this function return nonzero value
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* \return 0 on succes, errno on failure
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*/
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int spdk_rdma_qp_flush_send_wrs(struct spdk_rdma_qp *spdk_rdma_qp, struct ibv_send_wr **bad_wr);
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#endif /* SPDK_RDMA_H */
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