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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ISER_H
#define _ISER_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/cmn_err.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/sunddi.h>
#include <sys/ib/ibtl/ibti.h>
#include <sys/ib/ibtl/ibtl_types.h>
#include <sys/idm/idm.h>
#include <sys/ib/clients/iser/iser_ib.h>
#include <sys/ib/clients/iser/iser_resource.h>
#include <sys/ib/clients/iser/iser_cm.h>
#include <sys/ib/clients/iser/iser_xfer.h>
/*
* iser.h
* Definitions and macros related to iSER core functionality,
* softstate and DDI routines.
*/
extern boolean_t iser_logging;
#define ISER_LOG if (iser_logging) cmn_err
#define ISER_TASKQ_NTHREADS 4
#define ISER_HEADER_LENGTH 28
#define ISER_DELAY_HALF_SECOND 500000 /* for use with drv_usectohz() */
/* iSER Operational Parameters */
#define ISER_TARGET_RECV_DATA_SEGMENT_LENGTH_MIN 0x200
#define ISER_TARGET_RECV_DATA_SEGMENT_LENGTH_MAX 0xFFFFFF
#define ISER_TARGET_RECV_DATA_SEGMENT_LENGTH_IMPL_MAX 0xFFFFFF
#define ISER_TARGET_RECV_DATA_SEGMENT_LENGTH_DEFAULT \
ISCSI_DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH
#define ISER_INITIATOR_RECV_DATA_SEGMENT_LENGTH_MIN 0x200
#define ISER_INITIATOR_RECV_DATA_SEGMENT_LENGTH_MAX 0xFFFFFF
#define ISER_INITIATOR_RECV_DATA_SEGMENT_LENGTH_IMPL_MAX 0xFFFFFF
#define ISER_INITIATOR_RECV_DATA_SEGMENT_LENGTH_DEFAULT \
ISCSI_DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH
#define ISER_MAX_OUTSTANDING_UNEXPECTED_PDUS_MIN 0x0
#define ISER_MAX_OUTSTANDING_UNEXPECTED_PDUS_MAX 0xFFFFFFFF
#define ISER_MAX_OUTSTANDING_UNEXPECTED_PDUS_IMPL_MAX 0xFFFFFFFF
#define ISER_MAX_OUTSTANDING_UNEXPECTED_PDUS_DEFAULT 0x0
/* iSCSI key names that iSER is interested in */
#define ISER_KV_KEY_NAME_RDMA_EXTENSIONS "RDMAExtensions"
#define ISER_KV_KEY_NAME_OF_MARKER "OFMarker"
#define ISER_KV_KEY_NAME_IF_MARKER "IFMarker"
#define ISER_KV_KEY_NAME_TGT_RECV_SEGLEN "TargetRecvDataSegmentLength"
#define ISER_KV_KEY_NAME_INI_RECV_SEGLEN "InitiatorRecvDataSegmentLength"
#define ISER_KV_KEY_NAME_MAX_OUTSTANDING_PDU "MaxOutstandingUnexpectedPDUs"
typedef struct iser_sbind_s {
list_node_t is_list_node;
ibt_sbind_hdl_t is_sbindhdl;
ib_gid_t is_gid;
ib_guid_t is_guid;
} iser_sbind_t;
/* iSER-specific portion of idm_svc_t */
typedef struct iser_svc_s {
idm_refcnt_t is_refcnt;
ib_svc_id_t is_svcid;
ibt_srv_hdl_t is_srvhdl;
/* list of service bind handles - one per HCA port */
list_t is_sbindlist;
} iser_svc_t;
/*
* iSER endpoint connection type
*/
typedef enum {
ISER_CONN_TYPE_INI = 1,
ISER_CONN_TYPE_TGT
} iser_conn_type_t;
/*
* iSER Connection States to keep track of the connection going into
* iSER-assisted mode
*/
typedef enum {
ISER_CONN_STAGE_UNDEFINED,
ISER_CONN_STAGE_ALLOCATED, /* conn handle allocated */
ISER_CONN_STAGE_IC_CONNECTED, /* conn established */
ISER_CONN_STAGE_HELLO_SENT, /* hello exchange stages */
ISER_CONN_STAGE_HELLO_SENT_FAIL,
ISER_CONN_STAGE_HELLO_WAIT,
ISER_CONN_STAGE_HELLO_RCV,
ISER_CONN_STAGE_HELLO_RCV_FAIL,
ISER_CONN_STAGE_HELLOREPLY_SENT,
ISER_CONN_STAGE_HELLOREPLY_SENT_FAIL,
ISER_CONN_STAGE_HELLOREPLY_RCV,
ISER_CONN_STAGE_HELLOREPLY_RCV_FAIL,
ISER_CONN_STAGE_LOGGED_IN,
ISER_CONN_STAGE_IC_DISCONNECTED, /* conn disconnected */
ISER_CONN_STAGE_IC_FREED, /* conn handle allocated */
ISER_CONN_STAGE_CLOSING, /* channel closing */
ISER_CONN_STAGE_CLOSED /* channel closed */
} iser_conn_stage_t;
/*
* iSER operations parameters negotiated for a given connection
*/
typedef struct iser_op_params_s {
uint32_t op_header_digest:1,
op_data_digest:1,
op_rdma_extensions:1,
op_ofmarker:1,
op_ifmarker:1;
uint64_t op_target_recv_data_segment_length;
uint64_t op_initiator_recv_data_segment_length;
uint64_t op_max_outstanding_unexpected_pdus;
} iser_op_params_t;
/*
* iSER connection information
*/
typedef struct iser_conn_s {
kmutex_t ic_lock;
kcondvar_t ic_stage_cv;
iser_conn_type_t ic_type;
iser_chan_t *ic_chan;
iser_conn_stage_t ic_stage; /* for iSER-assisted mode */
iser_op_params_t ic_op_params;
idm_conn_t *ic_idmc;
idm_svc_t *ic_idms;
} iser_conn_t;
/*
* iser_state_t is the iser driver's state structure, encoding all of
* the state information.
*/
typedef struct iser_state_s {
dev_info_t *is_dip;
int is_instance;
/* IDM open ref counter and lock */
kmutex_t is_refcnt_lock;
int is_open_refcnt;
ibt_clnt_hdl_t is_ibhdl; /* IBT handle */
/* list of HCAs */
kmutex_t is_hcalist_lock; /* locked by is_hcalist_lock */
list_t is_hcalist;
uint_t is_num_hcas;
/* Connection list */
iser_conn_t *is_connlist;
/* Global work request handle cache */
kmem_cache_t *iser_wr_cache;
} iser_state_t;
typedef enum {
ISER_STATUS_SUCCESS = 0,
ISER_STATUS_FAIL
} iser_status_t;
int iser_idm_register();
iser_status_t iser_register_service(idm_svc_t *idm_svc);
iser_status_t iser_bind_service(idm_svc_t *idm_svc);
void iser_unbind_service(idm_svc_t *idm_svc);
void iser_deregister_service(idm_svc_t *idm_svc);
boolean_t iser_path_exists(idm_sockaddr_t *laddr, idm_sockaddr_t *raddr);
iser_chan_t *iser_channel_alloc(idm_sockaddr_t *laddr, idm_sockaddr_t *raddr);
iser_status_t iser_channel_open(iser_chan_t *chan);
void iser_channel_close(iser_chan_t *chan);
void iser_channel_free(iser_chan_t *chan);
void iser_internal_conn_destroy(iser_conn_t *ic);
/* IDM refcnt utilities for the iSER tgt svc handle */
void iser_tgt_svc_hold(iser_svc_t *is);
void iser_tgt_svc_rele(iser_svc_t *is);
#ifdef __cplusplus
}
#endif
#endif /* _ISER_H */
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