numam-spdk/lib/nvmf/port.h
Changpeng Liu 4fbe54f10e nvmf: add discovery subsystem to NVMf target
Change-Id: I4ee79ad268ae75208feddd62e22d6210a9c0d944
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
2016-06-30 16:20:09 -07:00

111 lines
3.5 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_PORT_H
#define NVMF_PORT_H
#include <stdint.h>
#include "spdk/conf.h"
#include "spdk/queue.h"
#include "spdk/nvmf_spec.h"
/** \file
* An NVMf subsystem port, referred to as simply "port" is defined by the
* specification as follows:
*
* An NVM subsystem port (port) is a collection of one or more physical fabric
* interfaces that together act as a single interface between the NVM subsystem
* and a fabric. When link aggregation (e.g., Ethernet) is used, the physical
* ports for the group of aggregated links constitute a single NVM subsystem port.
*/
enum fabric_type {
FABRIC_RDMA = 0x1,
FABRIC_PCI = 0x2,
FABRIC_ETHERNET = 0x3,
};
enum group_state {
GROUP_INIT = 0x0,
GROUP_READY = 0x1,
GROUP_DESTROY = 0x2,
};
struct spdk_nvmf_fabric_intf {
char *host;
char *sin_port;
struct spdk_nvmf_port *port;
enum spdk_nvmf_transport_types trtype;
enum spdk_nvmf_address_family_types adrfam;
enum spdk_nvmf_transport_requirements treq;
uint32_t num_sessions;
TAILQ_ENTRY(spdk_nvmf_fabric_intf) tailq;
};
struct spdk_nvmf_port {
int tag;
enum group_state state;
enum fabric_type type;
struct spdk_nvmf_rdma_transport_specific_address rdma;
TAILQ_HEAD(, spdk_nvmf_fabric_intf) head;
TAILQ_ENTRY(spdk_nvmf_port) tailq;
};
struct spdk_nvmf_fabric_intf *
spdk_nvmf_fabric_intf_create(char *host, char *sin_port);
void
spdk_nvmf_fabric_intf_destroy(struct spdk_nvmf_fabric_intf *fabric_intf);
struct spdk_nvmf_fabric_intf *
spdk_nvmf_port_find_fabric_intf_by_addr(char *addr);
struct spdk_nvmf_port *
spdk_nvmf_port_create(int tag);
void
spdk_nvmf_port_destroy(struct spdk_nvmf_port *port);
struct spdk_nvmf_port *
spdk_nvmf_port_find_by_tag(int tag);
void
spdk_nvmf_port_add_fabric_intf(struct spdk_nvmf_port *port,
struct spdk_nvmf_fabric_intf *fabric_intf);
void
spdk_nvmf_port_destroy_all(void);
#endif