e48354ce07
The Linux-iSCSI.org target module is a full featured in-kernel software implementation of iSCSI target mode (RFC-3720) for the current WIP mainline target v4.1 infrastructure code for the v3.1 kernel. More information can be found here: http://linux-iscsi.org/wiki/ISCSI This includes support for: * RFC-3720 defined request / response state machines and support for all defined iSCSI operation codes from Section 10.2.1.2 using libiscsi include/scsi/iscsi_proto.h PDU definitions * Target v4.1 compatible control plane using the generic layout in target_core_fabric_configfs.c and fabric dependent attributes within /sys/kernel/config/target/iscsi/ subdirectories. * Target v4.1 compatible iSCSI statistics based on RFC-4544 (iSCSI MIBS) * Support for IPv6 and IPv4 network portals in M:N mapping to TPGs * iSCSI Error Recovery Hierarchy support * Per iSCSI connection RX/TX thread pair scheduling affinity * crc32c + crc32c_intel SSEv4 instruction offload support using libcrypto * CHAP Authentication support using libcrypto * Conversion to use internal SGl allocation with iscsit_alloc_buffs() -> transport_generic_map_mem_to_cmd() (nab: Fix iscsi_proto.h struct scsi_lun usage from linux-next in commit: iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]) (nab: Fix 32-bit compile warnings) Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Andy Grover <agrover@redhat.com> Acked-by: Roland Dreier <roland@kernel.org> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
60 lines
3.8 KiB
C
60 lines
3.8 KiB
C
#ifndef ISCSI_TARGET_UTIL_H
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#define ISCSI_TARGET_UTIL_H
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#define MARKER_SIZE 8
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extern int iscsit_add_r2t_to_list(struct iscsi_cmd *, u32, u32, int, u32);
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extern struct iscsi_r2t *iscsit_get_r2t_for_eos(struct iscsi_cmd *, u32, u32);
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extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsi_cmd *);
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extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *);
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extern void iscsit_free_r2ts_from_list(struct iscsi_cmd *);
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extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
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extern struct iscsi_cmd *iscsit_allocate_se_cmd(struct iscsi_conn *, u32, int, int);
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extern struct iscsi_cmd *iscsit_allocate_se_cmd_for_tmr(struct iscsi_conn *, u8);
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extern int iscsit_decide_list_to_build(struct iscsi_cmd *, u32);
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extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32);
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extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
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extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);
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int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, u32 cmdsn);
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extern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *);
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extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, u32);
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extern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *,
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u32, u32);
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extern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32);
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extern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **,
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struct iscsi_conn_recovery **, u32);
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extern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);
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extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *);
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extern void iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);
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extern struct iscsi_queue_req *iscsit_get_cmd_from_response_queue(struct iscsi_conn *);
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extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_conn *);
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extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *);
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extern void iscsit_release_cmd(struct iscsi_cmd *);
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extern int iscsit_check_session_usage_count(struct iscsi_session *);
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extern void iscsit_dec_session_usage_count(struct iscsi_session *);
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extern void iscsit_inc_session_usage_count(struct iscsi_session *);
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extern int iscsit_set_sync_and_steering_values(struct iscsi_conn *);
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extern struct iscsi_conn *iscsit_get_conn_from_cid(struct iscsi_session *, u16);
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extern struct iscsi_conn *iscsit_get_conn_from_cid_rcfr(struct iscsi_session *, u16);
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extern void iscsit_check_conn_usage_count(struct iscsi_conn *);
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extern void iscsit_dec_conn_usage_count(struct iscsi_conn *);
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extern void iscsit_inc_conn_usage_count(struct iscsi_conn *);
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extern void iscsit_mod_nopin_response_timer(struct iscsi_conn *);
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extern void iscsit_start_nopin_response_timer(struct iscsi_conn *);
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extern void iscsit_stop_nopin_response_timer(struct iscsi_conn *);
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extern void __iscsit_start_nopin_timer(struct iscsi_conn *);
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extern void iscsit_start_nopin_timer(struct iscsi_conn *);
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extern void iscsit_stop_nopin_timer(struct iscsi_conn *);
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extern int iscsit_send_tx_data(struct iscsi_cmd *, struct iscsi_conn *, int);
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extern int iscsit_fe_sendpage_sg(struct iscsi_cmd *, struct iscsi_conn *);
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extern int iscsit_tx_login_rsp(struct iscsi_conn *, u8, u8);
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extern void iscsit_print_session_params(struct iscsi_session *);
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extern int iscsit_print_dev_to_proc(char *, char **, off_t, int);
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extern int iscsit_print_sessions_to_proc(char *, char **, off_t, int);
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extern int iscsit_print_tpg_to_proc(char *, char **, off_t, int);
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extern int rx_data(struct iscsi_conn *, struct kvec *, int, int);
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extern int tx_data(struct iscsi_conn *, struct kvec *, int, int);
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extern void iscsit_collect_login_stats(struct iscsi_conn *, u8, u8);
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extern struct iscsi_tiqn *iscsit_snmp_get_tiqn(struct iscsi_conn *);
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#endif /*** ISCSI_TARGET_UTIL_H ***/
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