numam-spdk/lib/nvmf/conn.h
Daniel Verkamp 54b538d1cb nvmf: move RDMA resource defaults to rdma.c
Change-Id: I98e92b4351b64ce87117341d86b1d39d8a826e72
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2016-06-20 14:24:47 -07:00

118 lines
3.4 KiB
C

/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NVMF_FABRIC_INTF_H
#define NVMF_FABRIC_INTF_H
#include <stdint.h>
#include "spdk/event.h"
#include "nvmf_internal.h"
#include "spdk/queue.h"
/* NVMF Connection States */
enum nvmf_cstate {
NVMF_CSTATE_INIT,
NVMF_CSTATE_ACCEPT,
NVMF_CSTATE_CONNECTED,
NVMF_CSTATE_TERMINATING,
NVMF_CSTATE_DISCONNECTED,
};
/* RDMA transport connection states */
enum conn_state {
CONN_STATE_INVALID = 0,
CONN_STATE_RUNNING = 1,
CONN_STATE_FABRIC_DISCONNECT = 2,
CONN_STATE_OVERFLOW = 3,
CONN_STATE_EXITING = 4,
};
enum conn_type {
CONN_TYPE_AQ = 0,
CONN_TYPE_IOQ = 1,
};
struct spdk_nvmf_conn {
uint32_t is_valid;
struct nvmf_session *sess;
/*
* values saved from fabric connect and private data
*/
uint8_t responder_resources;
uint8_t initiator_depth;
uint16_t sq_depth;
uint16_t cq_depth;
uint16_t qid;
uint16_t cntlid;
enum conn_type type;
volatile enum conn_state state;
uint16_t sq_head;
uint16_t sq_tail;
struct rdma_cm_id *cm_id;
struct ibv_context *ctx;
struct ibv_comp_channel *comp_channel;
struct ibv_cq *cq;
struct ibv_qp *qp;
uint8_t pending_rdma_read_count;
STAILQ_HEAD(qp_pending_desc, nvme_qp_tx_desc) qp_pending_desc;
STAILQ_HEAD(qp_rx_desc, nvme_qp_rx_desc) qp_rx_desc;
STAILQ_HEAD(qp_tx_desc, nvme_qp_tx_desc) qp_tx_desc;
STAILQ_HEAD(qp_tx_active_desc, nvme_qp_tx_desc) qp_tx_active_desc;
TAILQ_ENTRY(spdk_nvmf_conn) link;
struct spdk_poller poller;
};
int spdk_initialize_nvmf_conns(int max_connections);
void spdk_shutdown_nvmf_conns(void);
struct spdk_nvmf_conn *
spdk_nvmf_allocate_conn(void);
int spdk_nvmf_startup_conn(struct spdk_nvmf_conn *conn);
struct spdk_nvmf_conn *
spdk_find_nvmf_conn_by_cm_id(struct rdma_cm_id *cm_id);
#endif /* NVMF_FABRIC_INTF_H */