| #ifndef ISCSI_TARGET_CORE_H |
| #define ISCSI_TARGET_CORE_H |
| |
| #include <linux/in.h> |
| #include <linux/configfs.h> |
| #include <net/sock.h> |
| #include <net/tcp.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/iscsi_proto.h> |
| #include <target/target_core_base.h> |
| |
| #define ISCSIT_VERSION "v4.1.0-rc2" |
| #define ISCSI_MAX_DATASN_MISSING_COUNT 16 |
| #define ISCSI_TX_THREAD_TCP_TIMEOUT 2 |
| #define ISCSI_RX_THREAD_TCP_TIMEOUT 2 |
| #define SECONDS_FOR_ASYNC_LOGOUT 10 |
| #define SECONDS_FOR_ASYNC_TEXT 10 |
| #define SECONDS_FOR_LOGOUT_COMP 15 |
| #define WHITE_SPACE " \t\v\f\n\r" |
| |
| /* struct iscsi_node_attrib sanity values */ |
| #define NA_DATAOUT_TIMEOUT 3 |
| #define NA_DATAOUT_TIMEOUT_MAX 60 |
| #define NA_DATAOUT_TIMEOUT_MIX 2 |
| #define NA_DATAOUT_TIMEOUT_RETRIES 5 |
| #define NA_DATAOUT_TIMEOUT_RETRIES_MAX 15 |
| #define NA_DATAOUT_TIMEOUT_RETRIES_MIN 1 |
| #define NA_NOPIN_TIMEOUT 15 |
| #define NA_NOPIN_TIMEOUT_MAX 60 |
| #define NA_NOPIN_TIMEOUT_MIN 3 |
| #define NA_NOPIN_RESPONSE_TIMEOUT 30 |
| #define NA_NOPIN_RESPONSE_TIMEOUT_MAX 60 |
| #define NA_NOPIN_RESPONSE_TIMEOUT_MIN 3 |
| #define NA_RANDOM_DATAIN_PDU_OFFSETS 0 |
| #define NA_RANDOM_DATAIN_SEQ_OFFSETS 0 |
| #define NA_RANDOM_R2T_OFFSETS 0 |
| #define NA_DEFAULT_ERL 0 |
| #define NA_DEFAULT_ERL_MAX 2 |
| #define NA_DEFAULT_ERL_MIN 0 |
| |
| /* struct iscsi_tpg_attrib sanity values */ |
| #define TA_AUTHENTICATION 1 |
| #define TA_LOGIN_TIMEOUT 15 |
| #define TA_LOGIN_TIMEOUT_MAX 30 |
| #define TA_LOGIN_TIMEOUT_MIN 5 |
| #define TA_NETIF_TIMEOUT 2 |
| #define TA_NETIF_TIMEOUT_MAX 15 |
| #define TA_NETIF_TIMEOUT_MIN 2 |
| #define TA_GENERATE_NODE_ACLS 0 |
| #define TA_DEFAULT_CMDSN_DEPTH 16 |
| #define TA_DEFAULT_CMDSN_DEPTH_MAX 512 |
| #define TA_DEFAULT_CMDSN_DEPTH_MIN 1 |
| #define TA_CACHE_DYNAMIC_ACLS 0 |
| /* Enabled by default in demo mode (generic_node_acls=1) */ |
| #define TA_DEMO_MODE_WRITE_PROTECT 1 |
| /* Disabled by default in production mode w/ explict ACLs */ |
| #define TA_PROD_MODE_WRITE_PROTECT 0 |
| #define TA_CACHE_CORE_NPS 0 |
| |
| |
| #define ISCSI_IOV_DATA_BUFFER 5 |
| |
| enum iscsit_transport_type { |
| ISCSI_TCP = 0, |
| ISCSI_SCTP_TCP = 1, |
| ISCSI_SCTP_UDP = 2, |
| ISCSI_IWARP_TCP = 3, |
| ISCSI_IWARP_SCTP = 4, |
| ISCSI_INFINIBAND = 5, |
| }; |
| |
| /* RFC-3720 7.1.4 Standard Connection State Diagram for a Target */ |
| enum target_conn_state_table { |
| TARG_CONN_STATE_FREE = 0x1, |
| TARG_CONN_STATE_XPT_UP = 0x3, |
| TARG_CONN_STATE_IN_LOGIN = 0x4, |
| TARG_CONN_STATE_LOGGED_IN = 0x5, |
| TARG_CONN_STATE_IN_LOGOUT = 0x6, |
| TARG_CONN_STATE_LOGOUT_REQUESTED = 0x7, |
| TARG_CONN_STATE_CLEANUP_WAIT = 0x8, |
| }; |
| |
| /* RFC-3720 7.3.2 Session State Diagram for a Target */ |
| enum target_sess_state_table { |
| TARG_SESS_STATE_FREE = 0x1, |
| TARG_SESS_STATE_ACTIVE = 0x2, |
| TARG_SESS_STATE_LOGGED_IN = 0x3, |
| TARG_SESS_STATE_FAILED = 0x4, |
| TARG_SESS_STATE_IN_CONTINUE = 0x5, |
| }; |
| |
| /* struct iscsi_data_count->type */ |
| enum data_count_type { |
| ISCSI_RX_DATA = 1, |
| ISCSI_TX_DATA = 2, |
| }; |
| |
| /* struct iscsi_datain_req->dr_complete */ |
| enum datain_req_comp_table { |
| DATAIN_COMPLETE_NORMAL = 1, |
| DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY = 2, |
| DATAIN_COMPLETE_CONNECTION_RECOVERY = 3, |
| }; |
| |
| /* struct iscsi_datain_req->recovery */ |
| enum datain_req_rec_table { |
| DATAIN_WITHIN_COMMAND_RECOVERY = 1, |
| DATAIN_CONNECTION_RECOVERY = 2, |
| }; |
| |
| /* struct iscsi_portal_group->state */ |
| enum tpg_state_table { |
| TPG_STATE_FREE = 0, |
| TPG_STATE_ACTIVE = 1, |
| TPG_STATE_INACTIVE = 2, |
| TPG_STATE_COLD_RESET = 3, |
| }; |
| |
| /* struct iscsi_tiqn->tiqn_state */ |
| enum tiqn_state_table { |
| TIQN_STATE_ACTIVE = 1, |
| TIQN_STATE_SHUTDOWN = 2, |
| }; |
| |
| /* struct iscsi_cmd->cmd_flags */ |
| enum cmd_flags_table { |
| ICF_GOT_LAST_DATAOUT = 0x00000001, |
| ICF_GOT_DATACK_SNACK = 0x00000002, |
| ICF_NON_IMMEDIATE_UNSOLICITED_DATA = 0x00000004, |
| ICF_SENT_LAST_R2T = 0x00000008, |
| ICF_WITHIN_COMMAND_RECOVERY = 0x00000010, |
| ICF_CONTIG_MEMORY = 0x00000020, |
| ICF_ATTACHED_TO_RQUEUE = 0x00000040, |
| ICF_OOO_CMDSN = 0x00000080, |
| IFC_SENDTARGETS_ALL = 0x00000100, |
| IFC_SENDTARGETS_SINGLE = 0x00000200, |
| }; |
| |
| /* struct iscsi_cmd->i_state */ |
| enum cmd_i_state_table { |
| ISTATE_NO_STATE = 0, |
| ISTATE_NEW_CMD = 1, |
| ISTATE_DEFERRED_CMD = 2, |
| ISTATE_UNSOLICITED_DATA = 3, |
| ISTATE_RECEIVE_DATAOUT = 4, |
| ISTATE_RECEIVE_DATAOUT_RECOVERY = 5, |
| ISTATE_RECEIVED_LAST_DATAOUT = 6, |
| ISTATE_WITHIN_DATAOUT_RECOVERY = 7, |
| ISTATE_IN_CONNECTION_RECOVERY = 8, |
| ISTATE_RECEIVED_TASKMGT = 9, |
| ISTATE_SEND_ASYNCMSG = 10, |
| ISTATE_SENT_ASYNCMSG = 11, |
| ISTATE_SEND_DATAIN = 12, |
| ISTATE_SEND_LAST_DATAIN = 13, |
| ISTATE_SENT_LAST_DATAIN = 14, |
| ISTATE_SEND_LOGOUTRSP = 15, |
| ISTATE_SENT_LOGOUTRSP = 16, |
| ISTATE_SEND_NOPIN = 17, |
| ISTATE_SENT_NOPIN = 18, |
| ISTATE_SEND_REJECT = 19, |
| ISTATE_SENT_REJECT = 20, |
| ISTATE_SEND_R2T = 21, |
| ISTATE_SENT_R2T = 22, |
| ISTATE_SEND_R2T_RECOVERY = 23, |
| ISTATE_SENT_R2T_RECOVERY = 24, |
| ISTATE_SEND_LAST_R2T = 25, |
| ISTATE_SENT_LAST_R2T = 26, |
| ISTATE_SEND_LAST_R2T_RECOVERY = 27, |
| ISTATE_SENT_LAST_R2T_RECOVERY = 28, |
| ISTATE_SEND_STATUS = 29, |
| ISTATE_SEND_STATUS_BROKEN_PC = 30, |
| ISTATE_SENT_STATUS = 31, |
| ISTATE_SEND_STATUS_RECOVERY = 32, |
| ISTATE_SENT_STATUS_RECOVERY = 33, |
| ISTATE_SEND_TASKMGTRSP = 34, |
| ISTATE_SENT_TASKMGTRSP = 35, |
| ISTATE_SEND_TEXTRSP = 36, |
| ISTATE_SENT_TEXTRSP = 37, |
| ISTATE_SEND_NOPIN_WANT_RESPONSE = 38, |
| ISTATE_SENT_NOPIN_WANT_RESPONSE = 39, |
| ISTATE_SEND_NOPIN_NO_RESPONSE = 40, |
| ISTATE_REMOVE = 41, |
| ISTATE_FREE = 42, |
| }; |
| |
| /* Used for iscsi_recover_cmdsn() return values */ |
| enum recover_cmdsn_ret_table { |
| CMDSN_ERROR_CANNOT_RECOVER = -1, |
| CMDSN_NORMAL_OPERATION = 0, |
| CMDSN_LOWER_THAN_EXP = 1, |
| CMDSN_HIGHER_THAN_EXP = 2, |
| }; |
| |
| /* Used for iscsi_handle_immediate_data() return values */ |
| enum immedate_data_ret_table { |
| IMMEDIATE_DATA_CANNOT_RECOVER = -1, |
| IMMEDIATE_DATA_NORMAL_OPERATION = 0, |
| IMMEDIATE_DATA_ERL1_CRC_FAILURE = 1, |
| }; |
| |
| /* Used for iscsi_decide_dataout_action() return values */ |
| enum dataout_action_ret_table { |
| DATAOUT_CANNOT_RECOVER = -1, |
| DATAOUT_NORMAL = 0, |
| DATAOUT_SEND_R2T = 1, |
| DATAOUT_SEND_TO_TRANSPORT = 2, |
| DATAOUT_WITHIN_COMMAND_RECOVERY = 3, |
| }; |
| |
| /* Used for struct iscsi_node_auth->naf_flags */ |
| enum naf_flags_table { |
| NAF_USERID_SET = 0x01, |
| NAF_PASSWORD_SET = 0x02, |
| NAF_USERID_IN_SET = 0x04, |
| NAF_PASSWORD_IN_SET = 0x08, |
| }; |
| |
| /* Used by various struct timer_list to manage iSCSI specific state */ |
| enum iscsi_timer_flags_table { |
| ISCSI_TF_RUNNING = 0x01, |
| ISCSI_TF_STOP = 0x02, |
| ISCSI_TF_EXPIRED = 0x04, |
| }; |
| |
| /* Used for struct iscsi_np->np_flags */ |
| enum np_flags_table { |
| NPF_IP_NETWORK = 0x00, |
| }; |
| |
| /* Used for struct iscsi_np->np_thread_state */ |
| enum np_thread_state_table { |
| ISCSI_NP_THREAD_ACTIVE = 1, |
| ISCSI_NP_THREAD_INACTIVE = 2, |
| ISCSI_NP_THREAD_RESET = 3, |
| ISCSI_NP_THREAD_SHUTDOWN = 4, |
| ISCSI_NP_THREAD_EXIT = 5, |
| }; |
| |
| struct iscsi_conn_ops { |
| u8 HeaderDigest; /* [0,1] == [None,CRC32C] */ |
| u8 DataDigest; /* [0,1] == [None,CRC32C] */ |
| u32 MaxRecvDataSegmentLength; /* [512..2**24-1] */ |
| u32 MaxXmitDataSegmentLength; /* [512..2**24-1] */ |
| u8 OFMarker; /* [0,1] == [No,Yes] */ |
| u8 IFMarker; /* [0,1] == [No,Yes] */ |
| u32 OFMarkInt; /* [1..65535] */ |
| u32 IFMarkInt; /* [1..65535] */ |
| /* |
| * iSER specific connection parameters |
| */ |
| u32 InitiatorRecvDataSegmentLength; /* [512..2**24-1] */ |
| u32 TargetRecvDataSegmentLength; /* [512..2**24-1] */ |
| }; |
| |
| struct iscsi_sess_ops { |
| char InitiatorName[224]; |
| char InitiatorAlias[256]; |
| char TargetName[224]; |
| char TargetAlias[256]; |
| char TargetAddress[256]; |
| u16 TargetPortalGroupTag; /* [0..65535] */ |
| u16 MaxConnections; /* [1..65535] */ |
| u8 InitialR2T; /* [0,1] == [No,Yes] */ |
| u8 ImmediateData; /* [0,1] == [No,Yes] */ |
| u32 MaxBurstLength; /* [512..2**24-1] */ |
| u32 FirstBurstLength; /* [512..2**24-1] */ |
| u16 DefaultTime2Wait; /* [0..3600] */ |
| u16 DefaultTime2Retain; /* [0..3600] */ |
| u16 MaxOutstandingR2T; /* [1..65535] */ |
| u8 DataPDUInOrder; /* [0,1] == [No,Yes] */ |
| u8 DataSequenceInOrder; /* [0,1] == [No,Yes] */ |
| u8 ErrorRecoveryLevel; /* [0..2] */ |
| u8 SessionType; /* [0,1] == [Normal,Discovery]*/ |
| /* |
| * iSER specific session parameters |
| */ |
| u8 RDMAExtensions; /* [0,1] == [No,Yes] */ |
| }; |
| |
| struct iscsi_queue_req { |
| int state; |
| struct iscsi_cmd *cmd; |
| struct list_head qr_list; |
| }; |
| |
| struct iscsi_data_count { |
| int data_length; |
| int sync_and_steering; |
| enum data_count_type type; |
| u32 iov_count; |
| u32 ss_iov_count; |
| u32 ss_marker_count; |
| struct kvec *iov; |
| }; |
| |
| struct iscsi_param_list { |
| bool iser; |
| struct list_head param_list; |
| struct list_head extra_response_list; |
| }; |
| |
| struct iscsi_datain_req { |
| enum datain_req_comp_table dr_complete; |
| int generate_recovery_values; |
| enum datain_req_rec_table recovery; |
| u32 begrun; |
| u32 runlength; |
| u32 data_length; |
| u32 data_offset; |
| u32 data_sn; |
| u32 next_burst_len; |
| u32 read_data_done; |
| u32 seq_send_order; |
| struct list_head cmd_datain_node; |
| } ____cacheline_aligned; |
| |
| struct iscsi_ooo_cmdsn { |
| u16 cid; |
| u32 batch_count; |
| u32 cmdsn; |
| u32 exp_cmdsn; |
| struct iscsi_cmd *cmd; |
| struct list_head ooo_list; |
| } ____cacheline_aligned; |
| |
| struct iscsi_datain { |
| u8 flags; |
| u32 data_sn; |
| u32 length; |
| u32 offset; |
| } ____cacheline_aligned; |
| |
| struct iscsi_r2t { |
| int seq_complete; |
| int recovery_r2t; |
| int sent_r2t; |
| u32 r2t_sn; |
| u32 offset; |
| u32 targ_xfer_tag; |
| u32 xfer_len; |
| struct list_head r2t_list; |
| } ____cacheline_aligned; |
| |
| struct iscsi_cmd { |
| enum iscsi_timer_flags_table dataout_timer_flags; |
| /* DataOUT timeout retries */ |
| u8 dataout_timeout_retries; |
| /* Within command recovery count */ |
| u8 error_recovery_count; |
| /* iSCSI dependent state for out or order CmdSNs */ |
| enum cmd_i_state_table deferred_i_state; |
| /* iSCSI dependent state */ |
| enum cmd_i_state_table i_state; |
| /* Command is an immediate command (ISCSI_OP_IMMEDIATE set) */ |
| u8 immediate_cmd; |
| /* Immediate data present */ |
| u8 immediate_data; |
| /* iSCSI Opcode */ |
| u8 iscsi_opcode; |
| /* iSCSI Response Code */ |
| u8 iscsi_response; |
| /* Logout reason when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */ |
| u8 logout_reason; |
| /* Logout response code when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */ |
| u8 logout_response; |
| /* MaxCmdSN has been incremented */ |
| u8 maxcmdsn_inc; |
| /* Immediate Unsolicited Dataout */ |
| u8 unsolicited_data; |
| /* Reject reason code */ |
| u8 reject_reason; |
| /* CID contained in logout PDU when opcode == ISCSI_INIT_LOGOUT_CMND */ |
| u16 logout_cid; |
| /* Command flags */ |
| enum cmd_flags_table cmd_flags; |
| /* Initiator Task Tag assigned from Initiator */ |
| itt_t init_task_tag; |
| /* Target Transfer Tag assigned from Target */ |
| u32 targ_xfer_tag; |
| /* CmdSN assigned from Initiator */ |
| u32 cmd_sn; |
| /* ExpStatSN assigned from Initiator */ |
| u32 exp_stat_sn; |
| /* StatSN assigned to this ITT */ |
| u32 stat_sn; |
| /* DataSN Counter */ |
| u32 data_sn; |
| /* R2TSN Counter */ |
| u32 r2t_sn; |
| /* Last DataSN acknowledged via DataAck SNACK */ |
| u32 acked_data_sn; |
| /* Used for echoing NOPOUT ping data */ |
| u32 buf_ptr_size; |
| /* Used to store DataDigest */ |
| u32 data_crc; |
| /* Counter for MaxOutstandingR2T */ |
| u32 outstanding_r2ts; |
| /* Next R2T Offset when DataSequenceInOrder=Yes */ |
| u32 r2t_offset; |
| /* Iovec current and orig count for iscsi_cmd->iov_data */ |
| u32 iov_data_count; |
| u32 orig_iov_data_count; |
| /* Number of miscellaneous iovecs used for IP stack calls */ |
| u32 iov_misc_count; |
| /* Number of struct iscsi_pdu in struct iscsi_cmd->pdu_list */ |
| u32 pdu_count; |
| /* Next struct iscsi_pdu to send in struct iscsi_cmd->pdu_list */ |
| u32 pdu_send_order; |
| /* Current struct iscsi_pdu in struct iscsi_cmd->pdu_list */ |
| u32 pdu_start; |
| /* Next struct iscsi_seq to send in struct iscsi_cmd->seq_list */ |
| u32 seq_send_order; |
| /* Number of struct iscsi_seq in struct iscsi_cmd->seq_list */ |
| u32 seq_count; |
| /* Current struct iscsi_seq in struct iscsi_cmd->seq_list */ |
| u32 seq_no; |
| /* Lowest offset in current DataOUT sequence */ |
| u32 seq_start_offset; |
| /* Highest offset in current DataOUT sequence */ |
| u32 seq_end_offset; |
| /* Total size in bytes received so far of READ data */ |
| u32 read_data_done; |
| /* Total size in bytes received so far of WRITE data */ |
| u32 write_data_done; |
| /* Counter for FirstBurstLength key */ |
| u32 first_burst_len; |
| /* Counter for MaxBurstLength key */ |
| u32 next_burst_len; |
| /* Transfer size used for IP stack calls */ |
| u32 tx_size; |
| /* Buffer used for various purposes */ |
| void *buf_ptr; |
| /* Used by SendTargets=[iqn.,eui.] discovery */ |
| void *text_in_ptr; |
| /* See include/linux/dma-mapping.h */ |
| enum dma_data_direction data_direction; |
| /* iSCSI PDU Header + CRC */ |
| unsigned char pdu[ISCSI_HDR_LEN + ISCSI_CRC_LEN]; |
| /* Number of times struct iscsi_cmd is present in immediate queue */ |
| atomic_t immed_queue_count; |
| atomic_t response_queue_count; |
| spinlock_t datain_lock; |
| spinlock_t dataout_timeout_lock; |
| /* spinlock for protecting struct iscsi_cmd->i_state */ |
| spinlock_t istate_lock; |
| /* spinlock for adding within command recovery entries */ |
| spinlock_t error_lock; |
| /* spinlock for adding R2Ts */ |
| spinlock_t r2t_lock; |
| /* DataIN List */ |
| struct list_head datain_list; |
| /* R2T List */ |
| struct list_head cmd_r2t_list; |
| /* Timer for DataOUT */ |
| struct timer_list dataout_timer; |
| /* Iovecs for SCSI data payload RX/TX w/ kernel level sockets */ |
| struct kvec *iov_data; |
| /* Iovecs for miscellaneous purposes */ |
| #define ISCSI_MISC_IOVECS 5 |
| struct kvec iov_misc[ISCSI_MISC_IOVECS]; |
| /* Array of struct iscsi_pdu used for DataPDUInOrder=No */ |
| struct iscsi_pdu *pdu_list; |
| /* Current struct iscsi_pdu used for DataPDUInOrder=No */ |
| struct iscsi_pdu *pdu_ptr; |
| /* Array of struct iscsi_seq used for DataSequenceInOrder=No */ |
| struct iscsi_seq *seq_list; |
| /* Current struct iscsi_seq used for DataSequenceInOrder=No */ |
| struct iscsi_seq *seq_ptr; |
| /* TMR Request when iscsi_opcode == ISCSI_OP_SCSI_TMFUNC */ |
| struct iscsi_tmr_req *tmr_req; |
| /* Connection this command is alligient to */ |
| struct iscsi_conn *conn; |
| /* Pointer to connection recovery entry */ |
| struct iscsi_conn_recovery *cr; |
| /* Session the command is part of, used for connection recovery */ |
| struct iscsi_session *sess; |
| /* list_head for connection list */ |
| struct list_head i_conn_node; |
| /* The TCM I/O descriptor that is accessed via container_of() */ |
| struct se_cmd se_cmd; |
| /* Sense buffer that will be mapped into outgoing status */ |
| #define ISCSI_SENSE_BUFFER_LEN (TRANSPORT_SENSE_BUFFER + 2) |
| unsigned char sense_buffer[ISCSI_SENSE_BUFFER_LEN]; |
| |
| u32 padding; |
| u8 pad_bytes[4]; |
| |
| struct scatterlist *first_data_sg; |
| u32 first_data_sg_off; |
| u32 kmapped_nents; |
| sense_reason_t sense_reason; |
| void (*release_cmd)(struct iscsi_cmd *); |
| } ____cacheline_aligned; |
| |
| struct iscsi_tmr_req { |
| bool task_reassign:1; |
| u32 exp_data_sn; |
| struct iscsi_cmd *ref_cmd; |
| struct iscsi_conn_recovery *conn_recovery; |
| struct se_tmr_req *se_tmr_req; |
| }; |
| |
| struct iscsi_conn { |
| wait_queue_head_t queues_wq; |
| /* Authentication Successful for this connection */ |
| u8 auth_complete; |
| /* State connection is currently in */ |
| u8 conn_state; |
| u8 conn_logout_reason; |
| u8 network_transport; |
| enum iscsi_timer_flags_table nopin_timer_flags; |
| enum iscsi_timer_flags_table nopin_response_timer_flags; |
| /* Used to know what thread encountered a transport failure */ |
| u8 which_thread; |
| /* connection id assigned by the Initiator */ |
| u16 cid; |
| /* Remote TCP Port */ |
| u16 login_port; |
| u16 local_port; |
| int net_size; |
| int login_family; |
| u32 auth_id; |
| u32 conn_flags; |
| /* Used for iscsi_tx_login_rsp() */ |
| itt_t login_itt; |
| u32 exp_statsn; |
| /* Per connection status sequence number */ |
| u32 stat_sn; |
| /* IFMarkInt's Current Value */ |
| u32 if_marker; |
| /* OFMarkInt's Current Value */ |
| u32 of_marker; |
| /* Used for calculating OFMarker offset to next PDU */ |
| u32 of_marker_offset; |
| #define IPV6_ADDRESS_SPACE 48 |
| unsigned char login_ip[IPV6_ADDRESS_SPACE]; |
| unsigned char local_ip[IPV6_ADDRESS_SPACE]; |
| int conn_usage_count; |
| int conn_waiting_on_uc; |
| atomic_t check_immediate_queue; |
| atomic_t conn_logout_remove; |
| atomic_t connection_exit; |
| atomic_t connection_recovery; |
| atomic_t connection_reinstatement; |
| atomic_t connection_wait_rcfr; |
| atomic_t sleep_on_conn_wait_comp; |
| atomic_t transport_failed; |
| struct completion conn_post_wait_comp; |
| struct completion conn_wait_comp; |
| struct completion conn_wait_rcfr_comp; |
| struct completion conn_waiting_on_uc_comp; |
| struct completion conn_logout_comp; |
| struct completion tx_half_close_comp; |
| struct completion rx_half_close_comp; |
| /* socket used by this connection */ |
| struct socket *sock; |
| void (*orig_data_ready)(struct sock *, int); |
| #define LOGIN_FLAGS_READ_ACTIVE 1 |
| #define LOGIN_FLAGS_CLOSED 2 |
| #define LOGIN_FLAGS_READY 4 |
| unsigned long login_flags; |
| struct delayed_work login_work; |
| struct iscsi_login *login; |
| struct timer_list nopin_timer; |
| struct timer_list nopin_response_timer; |
| struct timer_list transport_timer; |
| struct task_struct *login_kworker; |
| /* Spinlock used for add/deleting cmd's from conn_cmd_list */ |
| spinlock_t cmd_lock; |
| spinlock_t conn_usage_lock; |
| spinlock_t immed_queue_lock; |
| spinlock_t nopin_timer_lock; |
| spinlock_t response_queue_lock; |
| spinlock_t state_lock; |
| /* libcrypto RX and TX contexts for crc32c */ |
| struct hash_desc conn_rx_hash; |
| struct hash_desc conn_tx_hash; |
| /* Used for scheduling TX and RX connection kthreads */ |
| cpumask_var_t conn_cpumask; |
| unsigned int conn_rx_reset_cpumask:1; |
| unsigned int conn_tx_reset_cpumask:1; |
| /* list_head of struct iscsi_cmd for this connection */ |
| struct list_head conn_cmd_list; |
| struct list_head immed_queue_list; |
| struct list_head response_queue_list; |
| struct iscsi_conn_ops *conn_ops; |
| struct iscsi_login *conn_login; |
| struct iscsit_transport *conn_transport; |
| struct iscsi_param_list *param_list; |
| /* Used for per connection auth state machine */ |
| void *auth_protocol; |
| void *context; |
| struct iscsi_login_thread_s *login_thread; |
| struct iscsi_portal_group *tpg; |
| struct iscsi_tpg_np *tpg_np; |
| /* Pointer to parent session */ |
| struct iscsi_session *sess; |
| /* Pointer to thread_set in use for this conn's threads */ |
| struct iscsi_thread_set *thread_set; |
| /* list_head for session connection list */ |
| struct list_head conn_list; |
| } ____cacheline_aligned; |
| |
| struct iscsi_conn_recovery { |
| u16 cid; |
| u32 cmd_count; |
| u32 maxrecvdatasegmentlength; |
| u32 maxxmitdatasegmentlength; |
| int ready_for_reallegiance; |
| struct list_head conn_recovery_cmd_list; |
| spinlock_t conn_recovery_cmd_lock; |
| struct timer_list time2retain_timer; |
| struct iscsi_session *sess; |
| struct list_head cr_list; |
| } ____cacheline_aligned; |
| |
| struct iscsi_session { |
| u8 initiator_vendor; |
| u8 isid[6]; |
| enum iscsi_timer_flags_table time2retain_timer_flags; |
| u8 version_active; |
| u16 cid_called; |
| u16 conn_recovery_count; |
| u16 tsih; |
| /* state session is currently in */ |
| u32 session_state; |
| /* session wide counter: initiator assigned task tag */ |
| itt_t init_task_tag; |
| /* session wide counter: target assigned task tag */ |
| u32 targ_xfer_tag; |
| u32 cmdsn_window; |
| |
| /* protects cmdsn values */ |
| struct mutex cmdsn_mutex; |
| /* session wide counter: expected command sequence number */ |
| u32 exp_cmd_sn; |
| /* session wide counter: maximum allowed command sequence number */ |
| u32 max_cmd_sn; |
| struct list_head sess_ooo_cmdsn_list; |
| |
| /* LIO specific session ID */ |
| u32 sid; |
| char auth_type[8]; |
| /* unique within the target */ |
| int session_index; |
| /* Used for session reference counting */ |
| int session_usage_count; |
| int session_waiting_on_uc; |
| u32 cmd_pdus; |
| u32 rsp_pdus; |
| u64 tx_data_octets; |
| u64 rx_data_octets; |
| u32 conn_digest_errors; |
| u32 conn_timeout_errors; |
| u64 creation_time; |
| spinlock_t session_stats_lock; |
| /* Number of active connections */ |
| atomic_t nconn; |
| atomic_t session_continuation; |
| atomic_t session_fall_back_to_erl0; |
| atomic_t session_logout; |
| atomic_t session_reinstatement; |
| atomic_t session_stop_active; |
| atomic_t sleep_on_sess_wait_comp; |
| /* connection list */ |
| struct list_head sess_conn_list; |
| struct list_head cr_active_list; |
| struct list_head cr_inactive_list; |
| spinlock_t conn_lock; |
| spinlock_t cr_a_lock; |
| spinlock_t cr_i_lock; |
| spinlock_t session_usage_lock; |
| spinlock_t ttt_lock; |
| struct completion async_msg_comp; |
| struct completion reinstatement_comp; |
| struct completion session_wait_comp; |
| struct completion session_waiting_on_uc_comp; |
| struct timer_list time2retain_timer; |
| struct iscsi_sess_ops *sess_ops; |
| struct se_session *se_sess; |
| struct iscsi_portal_group *tpg; |
| } ____cacheline_aligned; |
| |
| struct iscsi_login { |
| u8 auth_complete; |
| u8 checked_for_existing; |
| u8 current_stage; |
| u8 leading_connection; |
| u8 first_request; |
| u8 version_min; |
| u8 version_max; |
| u8 login_complete; |
| u8 login_failed; |
| bool zero_tsih; |
| char isid[6]; |
| u32 cmd_sn; |
| itt_t init_task_tag; |
| u32 initial_exp_statsn; |
| u32 rsp_length; |
| u16 cid; |
| u16 tsih; |
| char req[ISCSI_HDR_LEN]; |
| char rsp[ISCSI_HDR_LEN]; |
| char *req_buf; |
| char *rsp_buf; |
| struct iscsi_conn *conn; |
| struct iscsi_np *np; |
| } ____cacheline_aligned; |
| |
| struct iscsi_node_attrib { |
| u32 dataout_timeout; |
| u32 dataout_timeout_retries; |
| u32 default_erl; |
| u32 nopin_timeout; |
| u32 nopin_response_timeout; |
| u32 random_datain_pdu_offsets; |
| u32 random_datain_seq_offsets; |
| u32 random_r2t_offsets; |
| u32 tmr_cold_reset; |
| u32 tmr_warm_reset; |
| struct iscsi_node_acl *nacl; |
| }; |
| |
| struct se_dev_entry_s; |
| |
| struct iscsi_node_auth { |
| enum naf_flags_table naf_flags; |
| int authenticate_target; |
| /* Used for iscsit_global->discovery_auth, |
| * set to zero (auth disabled) by default */ |
| int enforce_discovery_auth; |
| #define MAX_USER_LEN 256 |
| #define MAX_PASS_LEN 256 |
| char userid[MAX_USER_LEN]; |
| char password[MAX_PASS_LEN]; |
| char userid_mutual[MAX_USER_LEN]; |
| char password_mutual[MAX_PASS_LEN]; |
| }; |
| |
| #include "iscsi_target_stat.h" |
| |
| struct iscsi_node_stat_grps { |
| struct config_group iscsi_sess_stats_group; |
| struct config_group iscsi_conn_stats_group; |
| }; |
| |
| struct iscsi_node_acl { |
| struct iscsi_node_attrib node_attrib; |
| struct iscsi_node_auth node_auth; |
| struct iscsi_node_stat_grps node_stat_grps; |
| struct se_node_acl se_node_acl; |
| }; |
| |
| #define NODE_STAT_GRPS(nacl) (&(nacl)->node_stat_grps) |
| |
| #define ISCSI_NODE_ATTRIB(t) (&(t)->node_attrib) |
| #define ISCSI_NODE_AUTH(t) (&(t)->node_auth) |
| |
| struct iscsi_tpg_attrib { |
| u32 authentication; |
| u32 login_timeout; |
| u32 netif_timeout; |
| u32 generate_node_acls; |
| u32 cache_dynamic_acls; |
| u32 default_cmdsn_depth; |
| u32 demo_mode_write_protect; |
| u32 prod_mode_write_protect; |
| struct iscsi_portal_group *tpg; |
| }; |
| |
| struct iscsi_np { |
| int np_network_transport; |
| int np_ip_proto; |
| int np_sock_type; |
| enum np_thread_state_table np_thread_state; |
| enum iscsi_timer_flags_table np_login_timer_flags; |
| u32 np_exports; |
| enum np_flags_table np_flags; |
| unsigned char np_ip[IPV6_ADDRESS_SPACE]; |
| u16 np_port; |
| spinlock_t np_thread_lock; |
| struct completion np_restart_comp; |
| struct socket *np_socket; |
| struct __kernel_sockaddr_storage np_sockaddr; |
| struct task_struct *np_thread; |
| struct timer_list np_login_timer; |
| void *np_context; |
| struct iscsit_transport *np_transport; |
| struct list_head np_list; |
| } ____cacheline_aligned; |
| |
| struct iscsi_tpg_np { |
| struct iscsi_np *tpg_np; |
| struct iscsi_portal_group *tpg; |
| struct iscsi_tpg_np *tpg_np_parent; |
| struct list_head tpg_np_list; |
| struct list_head tpg_np_child_list; |
| struct list_head tpg_np_parent_list; |
| struct se_tpg_np se_tpg_np; |
| spinlock_t tpg_np_parent_lock; |
| struct completion tpg_np_comp; |
| struct kref tpg_np_kref; |
| }; |
| |
| struct iscsi_portal_group { |
| unsigned char tpg_chap_id; |
| /* TPG State */ |
| enum tpg_state_table tpg_state; |
| /* Target Portal Group Tag */ |
| u16 tpgt; |
| /* Id assigned to target sessions */ |
| u16 ntsih; |
| /* Number of active sessions */ |
| u32 nsessions; |
| /* Number of Network Portals available for this TPG */ |
| u32 num_tpg_nps; |
| /* Per TPG LIO specific session ID. */ |
| u32 sid; |
| /* Spinlock for adding/removing Network Portals */ |
| spinlock_t tpg_np_lock; |
| spinlock_t tpg_state_lock; |
| struct se_portal_group tpg_se_tpg; |
| struct mutex tpg_access_lock; |
| struct semaphore np_login_sem; |
| struct iscsi_tpg_attrib tpg_attrib; |
| struct iscsi_node_auth tpg_demo_auth; |
| /* Pointer to default list of iSCSI parameters for TPG */ |
| struct iscsi_param_list *param_list; |
| struct iscsi_tiqn *tpg_tiqn; |
| struct list_head tpg_gnp_list; |
| struct list_head tpg_list; |
| } ____cacheline_aligned; |
| |
| #define ISCSI_TPG_C(c) ((struct iscsi_portal_group *)(c)->tpg) |
| #define ISCSI_TPG_LUN(c, l) ((iscsi_tpg_list_t *)(c)->tpg->tpg_lun_list_t[l]) |
| #define ISCSI_TPG_S(s) ((struct iscsi_portal_group *)(s)->tpg) |
| #define ISCSI_TPG_ATTRIB(t) (&(t)->tpg_attrib) |
| #define SE_TPG(tpg) (&(tpg)->tpg_se_tpg) |
| |
| struct iscsi_wwn_stat_grps { |
| struct config_group iscsi_stat_group; |
| struct config_group iscsi_instance_group; |
| struct config_group iscsi_sess_err_group; |
| struct config_group iscsi_tgt_attr_group; |
| struct config_group iscsi_login_stats_group; |
| struct config_group iscsi_logout_stats_group; |
| }; |
| |
| struct iscsi_tiqn { |
| #define ISCSI_IQN_LEN 224 |
| unsigned char tiqn[ISCSI_IQN_LEN]; |
| enum tiqn_state_table tiqn_state; |
| int tiqn_access_count; |
| u32 tiqn_active_tpgs; |
| u32 tiqn_ntpgs; |
| u32 tiqn_num_tpg_nps; |
| u32 tiqn_nsessions; |
| struct list_head tiqn_list; |
| struct list_head tiqn_tpg_list; |
| spinlock_t tiqn_state_lock; |
| spinlock_t tiqn_tpg_lock; |
| struct se_wwn tiqn_wwn; |
| struct iscsi_wwn_stat_grps tiqn_stat_grps; |
| int tiqn_index; |
| struct iscsi_sess_err_stats sess_err_stats; |
| struct iscsi_login_stats login_stats; |
| struct iscsi_logout_stats logout_stats; |
| } ____cacheline_aligned; |
| |
| #define WWN_STAT_GRPS(tiqn) (&(tiqn)->tiqn_stat_grps) |
| |
| struct iscsit_global { |
| /* In core shutdown */ |
| u32 in_shutdown; |
| u32 active_ts; |
| /* Unique identifier used for the authentication daemon */ |
| u32 auth_id; |
| u32 inactive_ts; |
| /* Thread Set bitmap count */ |
| int ts_bitmap_count; |
| /* Thread Set bitmap pointer */ |
| unsigned long *ts_bitmap; |
| /* Used for iSCSI discovery session authentication */ |
| struct iscsi_node_acl discovery_acl; |
| struct iscsi_portal_group *discovery_tpg; |
| }; |
| |
| #endif /* ISCSI_TARGET_CORE_H */ |