numam-spdk/lib/nvmf/session.h
Daniel Verkamp c3ed14d3a0 nvmf: refactor Connect command handling
Set a status code in the response capsule for each possible error case.

Also enforce CC.EN == 1 before I/O connect.
The NVMf spec requires that the controller is enabled before any I/O
queue Connect commands are allowed.

Change-Id: If56d6b4d6bedad00e9e845e77f05f715e3969f8b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2016-07-14 12:58:17 -07:00

99 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
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* the documentation and/or other materials provided with the
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*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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*/
#ifndef NVMF_SESSION_H
#define NVMF_SESSION_H
#include <stdint.h>
#include <stdbool.h>
#include "conn.h"
#include "request.h"
#include "spdk/nvmf_spec.h"
#include "spdk/queue.h"
/* define a virtual controller limit to the number of QPs supported */
#define MAX_SESSION_IO_QUEUES 64
/*
* This structure maintains the NVMf virtual controller session
* state. Each NVMf session permits some number of connections.
* At least one admin connection and additional IOQ connections.
*/
struct nvmf_session {
struct spdk_nvmf_subsystem *subsys;
struct {
union spdk_nvme_cap_register cap;
union spdk_nvme_vs_register vs;
union spdk_nvme_cc_register cc;
union spdk_nvme_csts_register csts;
} vcprop; /* virtual controller properties */
struct spdk_nvme_ctrlr_data vcdata; /* virtual controller data */
TAILQ_HEAD(connection_q, spdk_nvmf_conn) connections;
int num_connections;
int max_connections_allowed;
struct spdk_nvmf_request *aer_req;
};
void spdk_nvmf_session_connect(struct spdk_nvmf_conn *conn,
struct spdk_nvmf_fabric_connect_cmd *cmd,
struct spdk_nvmf_fabric_connect_data *data,
struct spdk_nvmf_fabric_connect_rsp *rsp);
void
nvmf_disconnect(struct nvmf_session *session, struct spdk_nvmf_conn *conn);
void
nvmf_property_get(struct nvmf_session *session,
struct spdk_nvmf_fabric_prop_get_cmd *cmd,
struct spdk_nvmf_fabric_prop_get_rsp *response);
void
nvmf_property_set(struct nvmf_session *session,
struct spdk_nvmf_fabric_prop_set_cmd *cmd,
struct spdk_nvmf_fabric_prop_set_rsp *response,
bool *shutdown);
void
nvmf_check_io_completions(struct nvmf_session *session);
void
nvmf_check_admin_completions(struct nvmf_session *session);
void spdk_nvmf_session_destruct(struct nvmf_session *session);
#endif