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icl.c
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icl.h
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icl_conn_if.m
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icl_soft.c
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icl_soft_proxy.c
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icl_wrappers.h
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iscsi.c
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iscsi.h
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iscsi_ioctl.h
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iscsi_proto.h
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Editing: iscsi_ioctl.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2012 The FreeBSD Foundation * * This software was developed by Edward Tomasz Napierala under sponsorship * from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $FreeBSD$ */ #ifndef ISCSI_IOCTL_H #define ISCSI_IOCTL_H #ifdef ICL_KERNEL_PROXY #include <sys/socket.h> #endif #define ISCSI_PATH "/dev/iscsi" #define ISCSI_MAX_DATA_SEGMENT_LENGTH (128 * 1024) #define ISCSI_NAME_LEN 224 /* 223 bytes, by RFC 3720, + '\0' */ #define ISCSI_ADDR_LEN 47 /* INET6_ADDRSTRLEN + '\0' */ #define ISCSI_ALIAS_LEN 256 /* XXX: Where did it come from? */ #define ISCSI_SECRET_LEN 17 /* 16 + '\0' */ #define ISCSI_OFFLOAD_LEN 8 #define ISCSI_REASON_LEN 64 #define ISCSI_DIGEST_NONE 0 #define ISCSI_DIGEST_CRC32C 1 /* * Session configuration, set when adding the session. */ struct iscsi_session_conf { char isc_initiator[ISCSI_NAME_LEN]; char isc_initiator_addr[ISCSI_ADDR_LEN]; char isc_initiator_alias[ISCSI_ALIAS_LEN]; char isc_target[ISCSI_NAME_LEN]; char isc_target_addr[ISCSI_ADDR_LEN]; char isc_user[ISCSI_NAME_LEN]; char isc_secret[ISCSI_SECRET_LEN]; char isc_mutual_user[ISCSI_NAME_LEN]; char isc_mutual_secret[ISCSI_SECRET_LEN]; int isc_discovery; int isc_header_digest; int isc_data_digest; int isc_iser; char isc_offload[ISCSI_OFFLOAD_LEN]; int isc_enable; int isc_dscp; int isc_pcp; int isc_spare[2]; }; /* * Additional constraints imposed by chosen ICL offload module; * iscsid(8) must obey those when negotiating operational parameters. */ struct iscsi_session_limits { size_t isl_spare0; int isl_max_recv_data_segment_length; int isl_max_send_data_segment_length; int isl_max_burst_length; int isl_first_burst_length; int isl_spare[4]; }; /* * Session state, negotiated by iscsid(8) and queried by iscsictl(8). */ struct iscsi_session_state { struct iscsi_session_conf iss_conf; unsigned int iss_id; char iss_target_alias[ISCSI_ALIAS_LEN]; int iss_header_digest; int iss_data_digest; int iss_max_recv_data_segment_length; int iss_max_burst_length; int iss_first_burst_length; int iss_immediate_data; int iss_connected; char iss_reason[ISCSI_REASON_LEN]; char iss_offload[ISCSI_OFFLOAD_LEN]; int iss_max_send_data_segment_length; int iss_spare[3]; }; /* * The following ioctls are used by iscsid(8). */ struct iscsi_daemon_request { unsigned int idr_session_id; struct iscsi_session_conf idr_conf; uint8_t idr_isid[6]; uint16_t idr_tsih; uint16_t idr_spare_cid; struct iscsi_session_limits idr_limits; int idr_spare[4]; }; struct iscsi_daemon_handoff { unsigned int idh_session_id; int idh_socket; char idh_target_alias[ISCSI_ALIAS_LEN]; int idh_protocol_level; uint16_t idh_spare; uint16_t idh_tsih; uint16_t idh_spare_cid; uint32_t idh_statsn; int idh_header_digest; int idh_data_digest; size_t spare[3]; int idh_immediate_data; int idh_initial_r2t; int idh_max_recv_data_segment_length; int idh_max_send_data_segment_length; int idh_max_burst_length; int idh_first_burst_length; }; struct iscsi_daemon_fail { unsigned int idf_session_id; char idf_reason[ISCSI_REASON_LEN]; int idf_spare[4]; }; #define ISCSIDWAIT _IOR('I', 0x01, struct iscsi_daemon_request) #define ISCSIDHANDOFF _IOW('I', 0x02, struct iscsi_daemon_handoff) #define ISCSIDFAIL _IOW('I', 0x03, struct iscsi_daemon_fail) #ifdef ICL_KERNEL_PROXY /* * When ICL_KERNEL_PROXY is not defined, the iscsid(8) is responsible * for creating the socket, connecting, and performing Login Phase using * the socket in the usual userspace way, and then passing the socket * file descriptor to the kernel part using ISCSIDHANDOFF. * * When ICL_KERNEL_PROXY is defined, the iscsid(8) creates the session * using ISCSICONNECT, performs Login Phase using ISCSISEND/ISCSIRECEIVE * instead of read(2)/write(2), and then calls ISCSIDHANDOFF with * idh_socket set to 0. * * The purpose of ICL_KERNEL_PROXY is to workaround the fact that, * at this time, it's not possible to do iWARP (RDMA) in userspace. */ struct iscsi_daemon_connect { unsigned int idc_session_id; int idc_iser; int idc_domain; int idc_socktype; int idc_protocol; struct sockaddr *idc_from_addr; socklen_t idc_from_addrlen; struct sockaddr *idc_to_addr; socklen_t idc_to_addrlen; int idc_spare[4]; }; struct iscsi_daemon_send { unsigned int ids_session_id; void *ids_bhs; size_t ids_spare; void *ids_spare2; size_t ids_data_segment_len; void *ids_data_segment; int ids_spare3[4]; }; struct iscsi_daemon_receive { unsigned int idr_session_id; void *idr_bhs; size_t idr_spare; void *idr_spare2; size_t idr_data_segment_len; void *idr_data_segment; int idr_spare3[4]; }; #define ISCSIDCONNECT _IOWR('I', 0x04, struct iscsi_daemon_connect) #define ISCSIDSEND _IOWR('I', 0x05, struct iscsi_daemon_send) #define ISCSIDRECEIVE _IOWR('I', 0x06, struct iscsi_daemon_receive) #endif /* ICL_KERNEL_PROXY */ /* * The following ioctls are used by iscsictl(8). */ struct iscsi_session_add { struct iscsi_session_conf isa_conf; int isa_spare[4]; }; struct iscsi_session_remove { unsigned int isr_session_id; struct iscsi_session_conf isr_conf; int isr_spare[4]; }; struct iscsi_session_list { unsigned int isl_nentries; struct iscsi_session_state *isl_pstates; int isl_spare[4]; }; struct iscsi_session_modify { unsigned int ism_session_id; struct iscsi_session_conf ism_conf; int ism_spare[4]; }; #define ISCSISADD _IOW('I', 0x11, struct iscsi_session_add) #define ISCSISREMOVE _IOW('I', 0x12, struct iscsi_session_remove) #define ISCSISLIST _IOWR('I', 0x13, struct iscsi_session_list) #define ISCSISMODIFY _IOWR('I', 0x14, struct iscsi_session_modify) #endif /* !ISCSI_IOCTL_H */
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