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alua.h
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alua.h
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/*
* Copyright 2017, Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
#ifndef __TCMU_ALUA_H
#define __TCMU_ALUA_H
#include "ccan/list/list.h"
struct tcmu_device;
struct tcmulibc_cmd;
struct tgt_port {
uint16_t rel_port_id;
uint8_t proto_id;
char *wwn;
/* LIO settings */
char *fabric;
bool enabled;
/* configfs tpgt */
uint16_t tpgt;
struct tgt_port_grp *grp;
/* entry on group's tgt_ports list */
struct list_node entry;
};
struct tgt_port_grp {
/* ALUA spec values */
uint8_t state;
uint8_t supported_states;
uint8_t tpgs;
uint8_t status;
uint8_t implicit_trans_secs;
bool pref;
uint16_t id;
/* LIO settings */
char *name;
unsigned nonop_delay_msecs;
unsigned trans_delay_msecs;
struct tcmu_device *dev;
uint8_t num_tgt_ports;
/* entry on list returned by lib */
struct list_node entry;
struct list_head tgt_ports;
};
int tcmu_emulate_set_tgt_port_grps(struct tcmu_device *dev,
struct list_head *group_list,
struct tcmulib_cmd *cmd);
int tcmu_emulate_report_tgt_port_grps(struct tcmu_device *dev,
struct list_head *group_list,
struct tcmulib_cmd *cmd);
struct tgt_port *tcmu_get_enabled_port(struct list_head *);
int tcmu_get_tgt_port_grps(struct tcmu_device *, struct list_head *);
void tcmu_release_tgt_port_grps(struct list_head *);
#endif