/* * 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 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _IDM_TRANSPORT_H_ #define _IDM_TRANSPORT_H_ #ifdef __cplusplus extern "C" { #endif #include #include #define IDM_TRANSPORT_PATHLEN 0x40 /* Note, this is tied to iSER currently */ #define IDM_TRANSPORT_HEADER_LENGTH 0x20 /* * idm_transport_type_t * An enumerated list of the transports available to iSER. * Note that new transports should be added to the enum prior to NUM_TYPES. */ typedef enum { IDM_TRANSPORT_TYPE_ISER = 0, IDM_TRANSPORT_TYPE_SOCKETS, IDM_TRANSPORT_NUM_TYPES, IDM_TRANSPORT_TYPE_UNDEFINED } idm_transport_type_t; /* * idm_transport_caps_t * Encodes a set of attributes describing an IDM transport's capabilities. * JB - do we need this? */ typedef struct idm_transport_caps_s { uint32_t flags; } idm_transport_caps_t; /* * Transport routine definitions for idm_transport_ops_t below */ /* Send_Control - transmit a Control-type PDU */ typedef void (transport_tx_op_t)(struct idm_conn_s *ic, struct idm_pdu_s *pdu); /* * Target transport data primitives, caller (IDM) holds idt->idt_mutex, * and the transport should release the mutex before returning. */ typedef idm_status_t (transport_buf_tx_to_ini_op_t)(struct idm_task_s *idt, struct idm_buf_s *idb); typedef idm_status_t (transport_buf_rx_from_ini_op_t)(struct idm_task_s *idt, struct idm_buf_s *idb); /* Initiator transport data handlers */ typedef void (transport_rx_datain_op_t)(struct idm_conn_s *ic, struct idm_pdu_s *pdu); typedef void (transport_rx_rtt_op_t)(struct idm_conn_s *ic, struct idm_pdu_s *pdu); /* Target transport Data-out handler */ typedef void (transport_rx_dataout_op_t)(struct idm_conn_s *ic, struct idm_pdu_s *pdu); /* Transport-specific resource allocation and free */ typedef idm_status_t (transport_alloc_conn_rsrc_op_t)(struct idm_conn_s *ic); typedef idm_status_t (transport_free_conn_rsrc_op_t)(struct idm_conn_s *ic); /* Transport driver operations enable/disable */ typedef idm_status_t (transport_tgt_enable_datamover_op_t)(struct idm_conn_s *ic); typedef idm_status_t (transport_ini_enable_datamover_op_t)(struct idm_conn_s *ic); typedef idm_status_t (transport_conn_terminate_op_t)(struct idm_conn_s *ic); /* Task resource cleanup */ typedef idm_status_t (transport_free_task_rsrcs_op_t)(struct idm_task_s *it); /* Negotiate key value pairs */ typedef kv_status_t (transport_negotiate_key_values_op_t)(struct idm_conn_s *ic, nvlist_t *request_nvl, nvlist_t *response_nvl, nvlist_t *negotiated_nvl); /* Activate the negotiated key value pairs */ typedef idm_status_t (transport_notice_key_values_op_t)(struct idm_conn_s *ic, nvlist_t *negotiated_nvl); /* Transport capability probe */ typedef boolean_t (transport_conn_is_capable_op_t)(idm_conn_req_t *ic, struct idm_transport_caps_s *caps); /* Transport buffer services */ typedef idm_status_t (transport_buf_alloc_op_t)(struct idm_buf_s *idb, uint64_t buflen); typedef idm_status_t (transport_buf_setup_op_t)(struct idm_buf_s *idb); typedef void (transport_buf_teardown_op_t)(struct idm_buf_s *idb); typedef void (transport_buf_free_op_t)(struct idm_buf_s *idb); /* Transport target context and service management services */ typedef idm_status_t (transport_tgt_svc_create_op_t)(idm_svc_req_t *sr, struct idm_svc_s *is); typedef void (transport_tgt_svc_destroy_op_t)(struct idm_svc_s *is); typedef idm_status_t (transport_tgt_svc_online_op_t)(struct idm_svc_s *is); typedef void (transport_tgt_svc_offline_op_t)(struct idm_svc_s *is); /* Transport target connection establishment */ typedef void (transport_tgt_conn_destroy_op_t)(struct idm_conn_s *ic); typedef idm_status_t (transport_tgt_conn_connect_op_t)(struct idm_conn_s *ic); typedef void (transport_tgt_conn_disconnect_op_t)(struct idm_conn_s *ic); /* Transport initiator context and connection management services */ typedef idm_status_t (transport_ini_conn_create_op_t)(idm_conn_req_t *cr, struct idm_conn_s *ic); typedef void (transport_ini_conn_destroy_op_t)(struct idm_conn_s *ic); typedef idm_status_t (transport_ini_conn_connect_op_t)(struct idm_conn_s *ic); typedef void (transport_ini_conn_disconnect_op_t)(struct idm_conn_s *ic); /* * idm_transport_ops_t * Encodes a set of vectors into an IDM transport driver that implement the * transport-specific Datamover operations for IDM usage. These routines are * invoked by the IDM layer to execute the transport-specific implementations * of the DataMover primitives and supporting routines. */ typedef struct idm_transport_ops_s { transport_tx_op_t *it_tx_pdu; transport_buf_tx_to_ini_op_t *it_buf_tx_to_ini; transport_buf_rx_from_ini_op_t *it_buf_rx_from_ini; transport_rx_datain_op_t *it_rx_datain; transport_rx_rtt_op_t *it_rx_rtt; transport_rx_dataout_op_t *it_rx_dataout; transport_alloc_conn_rsrc_op_t *it_alloc_conn_rsrc; transport_free_conn_rsrc_op_t *it_free_conn_rsrc; transport_tgt_enable_datamover_op_t *it_tgt_enable_datamover; transport_ini_enable_datamover_op_t *it_ini_enable_datamover; transport_conn_terminate_op_t *it_conn_terminate; transport_free_task_rsrcs_op_t *it_free_task_rsrc; transport_negotiate_key_values_op_t *it_negotiate_key_values; transport_notice_key_values_op_t *it_notice_key_values; transport_conn_is_capable_op_t *it_conn_is_capable; transport_buf_alloc_op_t *it_buf_alloc; transport_buf_free_op_t *it_buf_free; transport_buf_setup_op_t *it_buf_setup; transport_buf_teardown_op_t *it_buf_teardown; transport_tgt_svc_create_op_t *it_tgt_svc_create; transport_tgt_svc_destroy_op_t *it_tgt_svc_destroy; transport_tgt_svc_online_op_t *it_tgt_svc_online; transport_tgt_svc_offline_op_t *it_tgt_svc_offline; transport_tgt_conn_destroy_op_t *it_tgt_conn_destroy; transport_tgt_conn_connect_op_t *it_tgt_conn_connect; transport_tgt_conn_disconnect_op_t *it_tgt_conn_disconnect; transport_ini_conn_create_op_t *it_ini_conn_create; transport_ini_conn_destroy_op_t *it_ini_conn_destroy; transport_ini_conn_connect_op_t *it_ini_conn_connect; transport_ini_conn_disconnect_op_t *it_ini_conn_disconnect; } idm_transport_ops_t; /* * idm_transport_t encodes all of the data related to an IDM transport * type. In addition to type and capabilities, it also stores a pointer * to the connection and transport operation implementations, and also * it stores the LDI handle. */ typedef struct idm_transport_s { idm_transport_type_t it_type; char *it_device_path; ldi_handle_t it_ldi_hdl; idm_transport_ops_t *it_ops; idm_transport_caps_t *it_caps; } idm_transport_t; /* * idm_transport_attr_t encodes details of a transport driver seeking * registration with the IDM kernel module. */ typedef struct idm_transport_attr_s { idm_transport_type_t type; idm_transport_ops_t *it_ops; idm_transport_caps_t *it_caps; } idm_transport_attr_t; /* IDM transport API */ idm_status_t idm_transport_register(idm_transport_attr_t *attr); idm_transport_t * idm_transport_lookup(idm_conn_req_t *cr); void idm_transport_setup(ldi_ident_t li); #ifdef __cplusplus } #endif #endif /* _IDM_TRANSPORT_H_ */