Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 1 | #ifndef ISCSI_TARGET_CORE_H |
| 2 | #define ISCSI_TARGET_CORE_H |
| 3 | |
| 4 | #include <linux/in.h> |
| 5 | #include <linux/configfs.h> |
| 6 | #include <net/sock.h> |
| 7 | #include <net/tcp.h> |
| 8 | #include <scsi/scsi_cmnd.h> |
| 9 | #include <scsi/iscsi_proto.h> |
| 10 | #include <target/target_core_base.h> |
| 11 | |
Nicholas Bellinger | 2999ee7 | 2013-09-05 15:50:24 -0700 | [diff] [blame] | 12 | #define ISCSIT_VERSION "v4.1.0" |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 13 | #define ISCSI_MAX_DATASN_MISSING_COUNT 16 |
| 14 | #define ISCSI_TX_THREAD_TCP_TIMEOUT 2 |
| 15 | #define ISCSI_RX_THREAD_TCP_TIMEOUT 2 |
| 16 | #define SECONDS_FOR_ASYNC_LOGOUT 10 |
| 17 | #define SECONDS_FOR_ASYNC_TEXT 10 |
| 18 | #define SECONDS_FOR_LOGOUT_COMP 15 |
| 19 | #define WHITE_SPACE " \t\v\f\n\r" |
Nicholas Bellinger | 988e3a8 | 2013-08-17 15:49:08 -0700 | [diff] [blame] | 20 | #define ISCSIT_MIN_TAGS 16 |
| 21 | #define ISCSIT_EXTRA_TAGS 8 |
Nicholas Bellinger | 837f645 | 2013-09-09 16:24:46 -0700 | [diff] [blame] | 22 | #define ISCSIT_TCP_BACKLOG 256 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 23 | |
| 24 | /* struct iscsi_node_attrib sanity values */ |
| 25 | #define NA_DATAOUT_TIMEOUT 3 |
| 26 | #define NA_DATAOUT_TIMEOUT_MAX 60 |
| 27 | #define NA_DATAOUT_TIMEOUT_MIX 2 |
| 28 | #define NA_DATAOUT_TIMEOUT_RETRIES 5 |
| 29 | #define NA_DATAOUT_TIMEOUT_RETRIES_MAX 15 |
| 30 | #define NA_DATAOUT_TIMEOUT_RETRIES_MIN 1 |
Nicholas Bellinger | cf0eb28 | 2012-10-03 15:42:48 -0700 | [diff] [blame] | 31 | #define NA_NOPIN_TIMEOUT 15 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 32 | #define NA_NOPIN_TIMEOUT_MAX 60 |
| 33 | #define NA_NOPIN_TIMEOUT_MIN 3 |
Nicholas Bellinger | cf0eb28 | 2012-10-03 15:42:48 -0700 | [diff] [blame] | 34 | #define NA_NOPIN_RESPONSE_TIMEOUT 30 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 35 | #define NA_NOPIN_RESPONSE_TIMEOUT_MAX 60 |
| 36 | #define NA_NOPIN_RESPONSE_TIMEOUT_MIN 3 |
| 37 | #define NA_RANDOM_DATAIN_PDU_OFFSETS 0 |
| 38 | #define NA_RANDOM_DATAIN_SEQ_OFFSETS 0 |
| 39 | #define NA_RANDOM_R2T_OFFSETS 0 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 40 | |
| 41 | /* struct iscsi_tpg_attrib sanity values */ |
| 42 | #define TA_AUTHENTICATION 1 |
| 43 | #define TA_LOGIN_TIMEOUT 15 |
| 44 | #define TA_LOGIN_TIMEOUT_MAX 30 |
| 45 | #define TA_LOGIN_TIMEOUT_MIN 5 |
| 46 | #define TA_NETIF_TIMEOUT 2 |
| 47 | #define TA_NETIF_TIMEOUT_MAX 15 |
| 48 | #define TA_NETIF_TIMEOUT_MIN 2 |
| 49 | #define TA_GENERATE_NODE_ACLS 0 |
Nicholas Bellinger | 38f7d6e | 2013-09-05 15:04:22 -0700 | [diff] [blame] | 50 | #define TA_DEFAULT_CMDSN_DEPTH 64 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 51 | #define TA_DEFAULT_CMDSN_DEPTH_MAX 512 |
| 52 | #define TA_DEFAULT_CMDSN_DEPTH_MIN 1 |
| 53 | #define TA_CACHE_DYNAMIC_ACLS 0 |
| 54 | /* Enabled by default in demo mode (generic_node_acls=1) */ |
| 55 | #define TA_DEMO_MODE_WRITE_PROTECT 1 |
| 56 | /* Disabled by default in production mode w/ explict ACLs */ |
| 57 | #define TA_PROD_MODE_WRITE_PROTECT 0 |
Thomas Glanzmann | 4c54b6c | 2013-10-07 23:12:11 +0200 | [diff] [blame] | 58 | #define TA_DEMO_MODE_DISCOVERY 1 |
Nicholas Bellinger | d1fa7a1 | 2013-11-20 11:57:18 -0800 | [diff] [blame] | 59 | #define TA_DEFAULT_ERL 0 |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 60 | #define TA_CACHE_CORE_NPS 0 |
Sagi Grimberg | 5b168dc | 2014-02-19 17:50:19 +0200 | [diff] [blame] | 61 | /* T10 protection information disabled by default */ |
| 62 | #define TA_DEFAULT_T10_PI 0 |
Christoph Hellwig | c0427f1 | 2011-10-12 11:06:56 -0400 | [diff] [blame] | 63 | |
| 64 | #define ISCSI_IOV_DATA_BUFFER 5 |
| 65 | |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 66 | enum iscsit_transport_type { |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 67 | ISCSI_TCP = 0, |
| 68 | ISCSI_SCTP_TCP = 1, |
| 69 | ISCSI_SCTP_UDP = 2, |
| 70 | ISCSI_IWARP_TCP = 3, |
| 71 | ISCSI_IWARP_SCTP = 4, |
| 72 | ISCSI_INFINIBAND = 5, |
| 73 | }; |
| 74 | |
| 75 | /* RFC-3720 7.1.4 Standard Connection State Diagram for a Target */ |
| 76 | enum target_conn_state_table { |
| 77 | TARG_CONN_STATE_FREE = 0x1, |
| 78 | TARG_CONN_STATE_XPT_UP = 0x3, |
| 79 | TARG_CONN_STATE_IN_LOGIN = 0x4, |
| 80 | TARG_CONN_STATE_LOGGED_IN = 0x5, |
| 81 | TARG_CONN_STATE_IN_LOGOUT = 0x6, |
| 82 | TARG_CONN_STATE_LOGOUT_REQUESTED = 0x7, |
| 83 | TARG_CONN_STATE_CLEANUP_WAIT = 0x8, |
| 84 | }; |
| 85 | |
| 86 | /* RFC-3720 7.3.2 Session State Diagram for a Target */ |
| 87 | enum target_sess_state_table { |
| 88 | TARG_SESS_STATE_FREE = 0x1, |
| 89 | TARG_SESS_STATE_ACTIVE = 0x2, |
| 90 | TARG_SESS_STATE_LOGGED_IN = 0x3, |
| 91 | TARG_SESS_STATE_FAILED = 0x4, |
| 92 | TARG_SESS_STATE_IN_CONTINUE = 0x5, |
| 93 | }; |
| 94 | |
| 95 | /* struct iscsi_data_count->type */ |
| 96 | enum data_count_type { |
| 97 | ISCSI_RX_DATA = 1, |
| 98 | ISCSI_TX_DATA = 2, |
| 99 | }; |
| 100 | |
| 101 | /* struct iscsi_datain_req->dr_complete */ |
| 102 | enum datain_req_comp_table { |
| 103 | DATAIN_COMPLETE_NORMAL = 1, |
| 104 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY = 2, |
| 105 | DATAIN_COMPLETE_CONNECTION_RECOVERY = 3, |
| 106 | }; |
| 107 | |
| 108 | /* struct iscsi_datain_req->recovery */ |
| 109 | enum datain_req_rec_table { |
| 110 | DATAIN_WITHIN_COMMAND_RECOVERY = 1, |
| 111 | DATAIN_CONNECTION_RECOVERY = 2, |
| 112 | }; |
| 113 | |
| 114 | /* struct iscsi_portal_group->state */ |
| 115 | enum tpg_state_table { |
| 116 | TPG_STATE_FREE = 0, |
| 117 | TPG_STATE_ACTIVE = 1, |
| 118 | TPG_STATE_INACTIVE = 2, |
| 119 | TPG_STATE_COLD_RESET = 3, |
| 120 | }; |
| 121 | |
| 122 | /* struct iscsi_tiqn->tiqn_state */ |
| 123 | enum tiqn_state_table { |
| 124 | TIQN_STATE_ACTIVE = 1, |
| 125 | TIQN_STATE_SHUTDOWN = 2, |
| 126 | }; |
| 127 | |
| 128 | /* struct iscsi_cmd->cmd_flags */ |
| 129 | enum cmd_flags_table { |
| 130 | ICF_GOT_LAST_DATAOUT = 0x00000001, |
| 131 | ICF_GOT_DATACK_SNACK = 0x00000002, |
| 132 | ICF_NON_IMMEDIATE_UNSOLICITED_DATA = 0x00000004, |
| 133 | ICF_SENT_LAST_R2T = 0x00000008, |
| 134 | ICF_WITHIN_COMMAND_RECOVERY = 0x00000010, |
| 135 | ICF_CONTIG_MEMORY = 0x00000020, |
| 136 | ICF_ATTACHED_TO_RQUEUE = 0x00000040, |
| 137 | ICF_OOO_CMDSN = 0x00000080, |
Andy Grover | 8060b8d | 2015-01-09 15:13:08 -0800 | [diff] [blame] | 138 | ICF_SENDTARGETS_ALL = 0x00000100, |
| 139 | ICF_SENDTARGETS_SINGLE = 0x00000200, |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 140 | }; |
| 141 | |
| 142 | /* struct iscsi_cmd->i_state */ |
| 143 | enum cmd_i_state_table { |
| 144 | ISTATE_NO_STATE = 0, |
| 145 | ISTATE_NEW_CMD = 1, |
| 146 | ISTATE_DEFERRED_CMD = 2, |
| 147 | ISTATE_UNSOLICITED_DATA = 3, |
| 148 | ISTATE_RECEIVE_DATAOUT = 4, |
| 149 | ISTATE_RECEIVE_DATAOUT_RECOVERY = 5, |
| 150 | ISTATE_RECEIVED_LAST_DATAOUT = 6, |
| 151 | ISTATE_WITHIN_DATAOUT_RECOVERY = 7, |
| 152 | ISTATE_IN_CONNECTION_RECOVERY = 8, |
| 153 | ISTATE_RECEIVED_TASKMGT = 9, |
| 154 | ISTATE_SEND_ASYNCMSG = 10, |
| 155 | ISTATE_SENT_ASYNCMSG = 11, |
| 156 | ISTATE_SEND_DATAIN = 12, |
| 157 | ISTATE_SEND_LAST_DATAIN = 13, |
| 158 | ISTATE_SENT_LAST_DATAIN = 14, |
| 159 | ISTATE_SEND_LOGOUTRSP = 15, |
| 160 | ISTATE_SENT_LOGOUTRSP = 16, |
| 161 | ISTATE_SEND_NOPIN = 17, |
| 162 | ISTATE_SENT_NOPIN = 18, |
| 163 | ISTATE_SEND_REJECT = 19, |
| 164 | ISTATE_SENT_REJECT = 20, |
| 165 | ISTATE_SEND_R2T = 21, |
| 166 | ISTATE_SENT_R2T = 22, |
| 167 | ISTATE_SEND_R2T_RECOVERY = 23, |
| 168 | ISTATE_SENT_R2T_RECOVERY = 24, |
| 169 | ISTATE_SEND_LAST_R2T = 25, |
| 170 | ISTATE_SENT_LAST_R2T = 26, |
| 171 | ISTATE_SEND_LAST_R2T_RECOVERY = 27, |
| 172 | ISTATE_SENT_LAST_R2T_RECOVERY = 28, |
| 173 | ISTATE_SEND_STATUS = 29, |
| 174 | ISTATE_SEND_STATUS_BROKEN_PC = 30, |
| 175 | ISTATE_SENT_STATUS = 31, |
| 176 | ISTATE_SEND_STATUS_RECOVERY = 32, |
| 177 | ISTATE_SENT_STATUS_RECOVERY = 33, |
| 178 | ISTATE_SEND_TASKMGTRSP = 34, |
| 179 | ISTATE_SENT_TASKMGTRSP = 35, |
| 180 | ISTATE_SEND_TEXTRSP = 36, |
| 181 | ISTATE_SENT_TEXTRSP = 37, |
| 182 | ISTATE_SEND_NOPIN_WANT_RESPONSE = 38, |
| 183 | ISTATE_SENT_NOPIN_WANT_RESPONSE = 39, |
| 184 | ISTATE_SEND_NOPIN_NO_RESPONSE = 40, |
| 185 | ISTATE_REMOVE = 41, |
| 186 | ISTATE_FREE = 42, |
| 187 | }; |
| 188 | |
| 189 | /* Used for iscsi_recover_cmdsn() return values */ |
| 190 | enum recover_cmdsn_ret_table { |
| 191 | CMDSN_ERROR_CANNOT_RECOVER = -1, |
| 192 | CMDSN_NORMAL_OPERATION = 0, |
| 193 | CMDSN_LOWER_THAN_EXP = 1, |
| 194 | CMDSN_HIGHER_THAN_EXP = 2, |
Nicholas Bellinger | ea7e32b | 2013-11-18 10:55:10 -0800 | [diff] [blame] | 195 | CMDSN_MAXCMDSN_OVERRUN = 3, |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 196 | }; |
| 197 | |
| 198 | /* Used for iscsi_handle_immediate_data() return values */ |
| 199 | enum immedate_data_ret_table { |
| 200 | IMMEDIATE_DATA_CANNOT_RECOVER = -1, |
| 201 | IMMEDIATE_DATA_NORMAL_OPERATION = 0, |
| 202 | IMMEDIATE_DATA_ERL1_CRC_FAILURE = 1, |
| 203 | }; |
| 204 | |
| 205 | /* Used for iscsi_decide_dataout_action() return values */ |
| 206 | enum dataout_action_ret_table { |
| 207 | DATAOUT_CANNOT_RECOVER = -1, |
| 208 | DATAOUT_NORMAL = 0, |
| 209 | DATAOUT_SEND_R2T = 1, |
| 210 | DATAOUT_SEND_TO_TRANSPORT = 2, |
| 211 | DATAOUT_WITHIN_COMMAND_RECOVERY = 3, |
| 212 | }; |
| 213 | |
| 214 | /* Used for struct iscsi_node_auth->naf_flags */ |
| 215 | enum naf_flags_table { |
| 216 | NAF_USERID_SET = 0x01, |
| 217 | NAF_PASSWORD_SET = 0x02, |
| 218 | NAF_USERID_IN_SET = 0x04, |
| 219 | NAF_PASSWORD_IN_SET = 0x08, |
| 220 | }; |
| 221 | |
| 222 | /* Used by various struct timer_list to manage iSCSI specific state */ |
| 223 | enum iscsi_timer_flags_table { |
| 224 | ISCSI_TF_RUNNING = 0x01, |
| 225 | ISCSI_TF_STOP = 0x02, |
| 226 | ISCSI_TF_EXPIRED = 0x04, |
| 227 | }; |
| 228 | |
| 229 | /* Used for struct iscsi_np->np_flags */ |
| 230 | enum np_flags_table { |
| 231 | NPF_IP_NETWORK = 0x00, |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 232 | }; |
| 233 | |
| 234 | /* Used for struct iscsi_np->np_thread_state */ |
| 235 | enum np_thread_state_table { |
| 236 | ISCSI_NP_THREAD_ACTIVE = 1, |
| 237 | ISCSI_NP_THREAD_INACTIVE = 2, |
| 238 | ISCSI_NP_THREAD_RESET = 3, |
| 239 | ISCSI_NP_THREAD_SHUTDOWN = 4, |
| 240 | ISCSI_NP_THREAD_EXIT = 5, |
| 241 | }; |
| 242 | |
| 243 | struct iscsi_conn_ops { |
| 244 | u8 HeaderDigest; /* [0,1] == [None,CRC32C] */ |
| 245 | u8 DataDigest; /* [0,1] == [None,CRC32C] */ |
| 246 | u32 MaxRecvDataSegmentLength; /* [512..2**24-1] */ |
Nicholas Bellinger | e004cb2 | 2012-09-29 21:47:16 -0700 | [diff] [blame] | 247 | u32 MaxXmitDataSegmentLength; /* [512..2**24-1] */ |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 248 | u8 OFMarker; /* [0,1] == [No,Yes] */ |
| 249 | u8 IFMarker; /* [0,1] == [No,Yes] */ |
| 250 | u32 OFMarkInt; /* [1..65535] */ |
| 251 | u32 IFMarkInt; /* [1..65535] */ |
Nicholas Bellinger | 03aa207 | 2013-03-06 21:54:38 -0800 | [diff] [blame] | 252 | /* |
| 253 | * iSER specific connection parameters |
| 254 | */ |
| 255 | u32 InitiatorRecvDataSegmentLength; /* [512..2**24-1] */ |
| 256 | u32 TargetRecvDataSegmentLength; /* [512..2**24-1] */ |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 257 | }; |
| 258 | |
| 259 | struct iscsi_sess_ops { |
| 260 | char InitiatorName[224]; |
| 261 | char InitiatorAlias[256]; |
| 262 | char TargetName[224]; |
| 263 | char TargetAlias[256]; |
| 264 | char TargetAddress[256]; |
| 265 | u16 TargetPortalGroupTag; /* [0..65535] */ |
| 266 | u16 MaxConnections; /* [1..65535] */ |
| 267 | u8 InitialR2T; /* [0,1] == [No,Yes] */ |
| 268 | u8 ImmediateData; /* [0,1] == [No,Yes] */ |
| 269 | u32 MaxBurstLength; /* [512..2**24-1] */ |
| 270 | u32 FirstBurstLength; /* [512..2**24-1] */ |
| 271 | u16 DefaultTime2Wait; /* [0..3600] */ |
| 272 | u16 DefaultTime2Retain; /* [0..3600] */ |
| 273 | u16 MaxOutstandingR2T; /* [1..65535] */ |
| 274 | u8 DataPDUInOrder; /* [0,1] == [No,Yes] */ |
| 275 | u8 DataSequenceInOrder; /* [0,1] == [No,Yes] */ |
| 276 | u8 ErrorRecoveryLevel; /* [0..2] */ |
| 277 | u8 SessionType; /* [0,1] == [Normal,Discovery]*/ |
Nicholas Bellinger | 03aa207 | 2013-03-06 21:54:38 -0800 | [diff] [blame] | 278 | /* |
| 279 | * iSER specific session parameters |
| 280 | */ |
| 281 | u8 RDMAExtensions; /* [0,1] == [No,Yes] */ |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 282 | }; |
| 283 | |
| 284 | struct iscsi_queue_req { |
| 285 | int state; |
| 286 | struct iscsi_cmd *cmd; |
| 287 | struct list_head qr_list; |
| 288 | }; |
| 289 | |
| 290 | struct iscsi_data_count { |
| 291 | int data_length; |
| 292 | int sync_and_steering; |
| 293 | enum data_count_type type; |
| 294 | u32 iov_count; |
| 295 | u32 ss_iov_count; |
| 296 | u32 ss_marker_count; |
| 297 | struct kvec *iov; |
| 298 | }; |
| 299 | |
| 300 | struct iscsi_param_list { |
Nicholas Bellinger | 03aa207 | 2013-03-06 21:54:38 -0800 | [diff] [blame] | 301 | bool iser; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 302 | struct list_head param_list; |
| 303 | struct list_head extra_response_list; |
| 304 | }; |
| 305 | |
| 306 | struct iscsi_datain_req { |
| 307 | enum datain_req_comp_table dr_complete; |
| 308 | int generate_recovery_values; |
| 309 | enum datain_req_rec_table recovery; |
| 310 | u32 begrun; |
| 311 | u32 runlength; |
| 312 | u32 data_length; |
| 313 | u32 data_offset; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 314 | u32 data_sn; |
| 315 | u32 next_burst_len; |
| 316 | u32 read_data_done; |
| 317 | u32 seq_send_order; |
Andy Grover | 8b1e124 | 2012-04-03 15:51:12 -0700 | [diff] [blame] | 318 | struct list_head cmd_datain_node; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 319 | } ____cacheline_aligned; |
| 320 | |
| 321 | struct iscsi_ooo_cmdsn { |
| 322 | u16 cid; |
| 323 | u32 batch_count; |
| 324 | u32 cmdsn; |
| 325 | u32 exp_cmdsn; |
| 326 | struct iscsi_cmd *cmd; |
| 327 | struct list_head ooo_list; |
| 328 | } ____cacheline_aligned; |
| 329 | |
| 330 | struct iscsi_datain { |
| 331 | u8 flags; |
| 332 | u32 data_sn; |
| 333 | u32 length; |
| 334 | u32 offset; |
| 335 | } ____cacheline_aligned; |
| 336 | |
| 337 | struct iscsi_r2t { |
| 338 | int seq_complete; |
| 339 | int recovery_r2t; |
| 340 | int sent_r2t; |
| 341 | u32 r2t_sn; |
| 342 | u32 offset; |
| 343 | u32 targ_xfer_tag; |
| 344 | u32 xfer_len; |
| 345 | struct list_head r2t_list; |
| 346 | } ____cacheline_aligned; |
| 347 | |
| 348 | struct iscsi_cmd { |
| 349 | enum iscsi_timer_flags_table dataout_timer_flags; |
| 350 | /* DataOUT timeout retries */ |
| 351 | u8 dataout_timeout_retries; |
| 352 | /* Within command recovery count */ |
| 353 | u8 error_recovery_count; |
| 354 | /* iSCSI dependent state for out or order CmdSNs */ |
| 355 | enum cmd_i_state_table deferred_i_state; |
| 356 | /* iSCSI dependent state */ |
| 357 | enum cmd_i_state_table i_state; |
| 358 | /* Command is an immediate command (ISCSI_OP_IMMEDIATE set) */ |
| 359 | u8 immediate_cmd; |
| 360 | /* Immediate data present */ |
| 361 | u8 immediate_data; |
| 362 | /* iSCSI Opcode */ |
| 363 | u8 iscsi_opcode; |
| 364 | /* iSCSI Response Code */ |
| 365 | u8 iscsi_response; |
| 366 | /* Logout reason when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */ |
| 367 | u8 logout_reason; |
| 368 | /* Logout response code when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */ |
| 369 | u8 logout_response; |
| 370 | /* MaxCmdSN has been incremented */ |
| 371 | u8 maxcmdsn_inc; |
| 372 | /* Immediate Unsolicited Dataout */ |
| 373 | u8 unsolicited_data; |
Nicholas Bellinger | ba15991 | 2013-07-03 03:48:24 -0700 | [diff] [blame] | 374 | /* Reject reason code */ |
| 375 | u8 reject_reason; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 376 | /* CID contained in logout PDU when opcode == ISCSI_INIT_LOGOUT_CMND */ |
| 377 | u16 logout_cid; |
| 378 | /* Command flags */ |
| 379 | enum cmd_flags_table cmd_flags; |
| 380 | /* Initiator Task Tag assigned from Initiator */ |
Christoph Hellwig | 66c7db6 | 2012-09-26 08:00:39 -0400 | [diff] [blame] | 381 | itt_t init_task_tag; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 382 | /* Target Transfer Tag assigned from Target */ |
| 383 | u32 targ_xfer_tag; |
| 384 | /* CmdSN assigned from Initiator */ |
| 385 | u32 cmd_sn; |
| 386 | /* ExpStatSN assigned from Initiator */ |
| 387 | u32 exp_stat_sn; |
| 388 | /* StatSN assigned to this ITT */ |
| 389 | u32 stat_sn; |
| 390 | /* DataSN Counter */ |
| 391 | u32 data_sn; |
| 392 | /* R2TSN Counter */ |
| 393 | u32 r2t_sn; |
| 394 | /* Last DataSN acknowledged via DataAck SNACK */ |
| 395 | u32 acked_data_sn; |
| 396 | /* Used for echoing NOPOUT ping data */ |
| 397 | u32 buf_ptr_size; |
| 398 | /* Used to store DataDigest */ |
| 399 | u32 data_crc; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 400 | /* Counter for MaxOutstandingR2T */ |
| 401 | u32 outstanding_r2ts; |
| 402 | /* Next R2T Offset when DataSequenceInOrder=Yes */ |
| 403 | u32 r2t_offset; |
| 404 | /* Iovec current and orig count for iscsi_cmd->iov_data */ |
| 405 | u32 iov_data_count; |
| 406 | u32 orig_iov_data_count; |
| 407 | /* Number of miscellaneous iovecs used for IP stack calls */ |
| 408 | u32 iov_misc_count; |
| 409 | /* Number of struct iscsi_pdu in struct iscsi_cmd->pdu_list */ |
| 410 | u32 pdu_count; |
| 411 | /* Next struct iscsi_pdu to send in struct iscsi_cmd->pdu_list */ |
| 412 | u32 pdu_send_order; |
| 413 | /* Current struct iscsi_pdu in struct iscsi_cmd->pdu_list */ |
| 414 | u32 pdu_start; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 415 | /* Next struct iscsi_seq to send in struct iscsi_cmd->seq_list */ |
| 416 | u32 seq_send_order; |
| 417 | /* Number of struct iscsi_seq in struct iscsi_cmd->seq_list */ |
| 418 | u32 seq_count; |
| 419 | /* Current struct iscsi_seq in struct iscsi_cmd->seq_list */ |
| 420 | u32 seq_no; |
| 421 | /* Lowest offset in current DataOUT sequence */ |
| 422 | u32 seq_start_offset; |
| 423 | /* Highest offset in current DataOUT sequence */ |
| 424 | u32 seq_end_offset; |
| 425 | /* Total size in bytes received so far of READ data */ |
| 426 | u32 read_data_done; |
| 427 | /* Total size in bytes received so far of WRITE data */ |
| 428 | u32 write_data_done; |
| 429 | /* Counter for FirstBurstLength key */ |
| 430 | u32 first_burst_len; |
| 431 | /* Counter for MaxBurstLength key */ |
| 432 | u32 next_burst_len; |
| 433 | /* Transfer size used for IP stack calls */ |
| 434 | u32 tx_size; |
| 435 | /* Buffer used for various purposes */ |
| 436 | void *buf_ptr; |
Nicholas Bellinger | 9864ca9 | 2013-06-19 22:43:11 -0700 | [diff] [blame] | 437 | /* Used by SendTargets=[iqn.,eui.] discovery */ |
| 438 | void *text_in_ptr; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 439 | /* See include/linux/dma-mapping.h */ |
| 440 | enum dma_data_direction data_direction; |
| 441 | /* iSCSI PDU Header + CRC */ |
| 442 | unsigned char pdu[ISCSI_HDR_LEN + ISCSI_CRC_LEN]; |
| 443 | /* Number of times struct iscsi_cmd is present in immediate queue */ |
| 444 | atomic_t immed_queue_count; |
| 445 | atomic_t response_queue_count; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 446 | spinlock_t datain_lock; |
| 447 | spinlock_t dataout_timeout_lock; |
| 448 | /* spinlock for protecting struct iscsi_cmd->i_state */ |
| 449 | spinlock_t istate_lock; |
| 450 | /* spinlock for adding within command recovery entries */ |
| 451 | spinlock_t error_lock; |
| 452 | /* spinlock for adding R2Ts */ |
| 453 | spinlock_t r2t_lock; |
| 454 | /* DataIN List */ |
| 455 | struct list_head datain_list; |
| 456 | /* R2T List */ |
| 457 | struct list_head cmd_r2t_list; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 458 | /* Timer for DataOUT */ |
| 459 | struct timer_list dataout_timer; |
| 460 | /* Iovecs for SCSI data payload RX/TX w/ kernel level sockets */ |
| 461 | struct kvec *iov_data; |
| 462 | /* Iovecs for miscellaneous purposes */ |
| 463 | #define ISCSI_MISC_IOVECS 5 |
| 464 | struct kvec iov_misc[ISCSI_MISC_IOVECS]; |
| 465 | /* Array of struct iscsi_pdu used for DataPDUInOrder=No */ |
| 466 | struct iscsi_pdu *pdu_list; |
| 467 | /* Current struct iscsi_pdu used for DataPDUInOrder=No */ |
| 468 | struct iscsi_pdu *pdu_ptr; |
| 469 | /* Array of struct iscsi_seq used for DataSequenceInOrder=No */ |
| 470 | struct iscsi_seq *seq_list; |
| 471 | /* Current struct iscsi_seq used for DataSequenceInOrder=No */ |
| 472 | struct iscsi_seq *seq_ptr; |
| 473 | /* TMR Request when iscsi_opcode == ISCSI_OP_SCSI_TMFUNC */ |
| 474 | struct iscsi_tmr_req *tmr_req; |
| 475 | /* Connection this command is alligient to */ |
| 476 | struct iscsi_conn *conn; |
| 477 | /* Pointer to connection recovery entry */ |
| 478 | struct iscsi_conn_recovery *cr; |
| 479 | /* Session the command is part of, used for connection recovery */ |
| 480 | struct iscsi_session *sess; |
| 481 | /* list_head for connection list */ |
Andy Grover | 2fbb471 | 2012-04-03 15:51:01 -0700 | [diff] [blame] | 482 | struct list_head i_conn_node; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 483 | /* The TCM I/O descriptor that is accessed via container_of() */ |
| 484 | struct se_cmd se_cmd; |
| 485 | /* Sense buffer that will be mapped into outgoing status */ |
| 486 | #define ISCSI_SENSE_BUFFER_LEN (TRANSPORT_SENSE_BUFFER + 2) |
| 487 | unsigned char sense_buffer[ISCSI_SENSE_BUFFER_LEN]; |
| 488 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 489 | u32 padding; |
| 490 | u8 pad_bytes[4]; |
| 491 | |
| 492 | struct scatterlist *first_data_sg; |
| 493 | u32 first_data_sg_off; |
| 494 | u32 kmapped_nents; |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 495 | sense_reason_t sense_reason; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 496 | } ____cacheline_aligned; |
| 497 | |
| 498 | struct iscsi_tmr_req { |
| 499 | bool task_reassign:1; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 500 | u32 exp_data_sn; |
Christoph Hellwig | 9f3eb93 | 2012-05-20 14:35:02 -0400 | [diff] [blame] | 501 | struct iscsi_cmd *ref_cmd; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 502 | struct iscsi_conn_recovery *conn_recovery; |
| 503 | struct se_tmr_req *se_tmr_req; |
| 504 | }; |
| 505 | |
| 506 | struct iscsi_conn { |
Roland Dreier | d5627ac | 2012-10-31 09:16:46 -0700 | [diff] [blame] | 507 | wait_queue_head_t queues_wq; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 508 | /* Authentication Successful for this connection */ |
| 509 | u8 auth_complete; |
| 510 | /* State connection is currently in */ |
| 511 | u8 conn_state; |
| 512 | u8 conn_logout_reason; |
| 513 | u8 network_transport; |
| 514 | enum iscsi_timer_flags_table nopin_timer_flags; |
| 515 | enum iscsi_timer_flags_table nopin_response_timer_flags; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 516 | /* Used to know what thread encountered a transport failure */ |
| 517 | u8 which_thread; |
| 518 | /* connection id assigned by the Initiator */ |
| 519 | u16 cid; |
| 520 | /* Remote TCP Port */ |
| 521 | u16 login_port; |
Nicholas Bellinger | 2f9bc89 | 2012-01-16 23:33:48 -0800 | [diff] [blame] | 522 | u16 local_port; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 523 | int net_size; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 524 | int login_family; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 525 | u32 auth_id; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 526 | u32 conn_flags; |
| 527 | /* Used for iscsi_tx_login_rsp() */ |
Christoph Hellwig | 66c7db6 | 2012-09-26 08:00:39 -0400 | [diff] [blame] | 528 | itt_t login_itt; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 529 | u32 exp_statsn; |
| 530 | /* Per connection status sequence number */ |
| 531 | u32 stat_sn; |
| 532 | /* IFMarkInt's Current Value */ |
| 533 | u32 if_marker; |
| 534 | /* OFMarkInt's Current Value */ |
| 535 | u32 of_marker; |
| 536 | /* Used for calculating OFMarker offset to next PDU */ |
| 537 | u32 of_marker_offset; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 538 | #define IPV6_ADDRESS_SPACE 48 |
| 539 | unsigned char login_ip[IPV6_ADDRESS_SPACE]; |
Nicholas Bellinger | 2f9bc89 | 2012-01-16 23:33:48 -0800 | [diff] [blame] | 540 | unsigned char local_ip[IPV6_ADDRESS_SPACE]; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 541 | int conn_usage_count; |
| 542 | int conn_waiting_on_uc; |
| 543 | atomic_t check_immediate_queue; |
| 544 | atomic_t conn_logout_remove; |
| 545 | atomic_t connection_exit; |
| 546 | atomic_t connection_recovery; |
| 547 | atomic_t connection_reinstatement; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 548 | atomic_t connection_wait_rcfr; |
| 549 | atomic_t sleep_on_conn_wait_comp; |
| 550 | atomic_t transport_failed; |
| 551 | struct completion conn_post_wait_comp; |
| 552 | struct completion conn_wait_comp; |
| 553 | struct completion conn_wait_rcfr_comp; |
| 554 | struct completion conn_waiting_on_uc_comp; |
| 555 | struct completion conn_logout_comp; |
| 556 | struct completion tx_half_close_comp; |
| 557 | struct completion rx_half_close_comp; |
| 558 | /* socket used by this connection */ |
| 559 | struct socket *sock; |
David S. Miller | 676d236 | 2014-04-11 16:15:36 -0400 | [diff] [blame] | 560 | void (*orig_data_ready)(struct sock *); |
Nicholas Bellinger | bb04835 | 2013-09-05 14:54:04 -0700 | [diff] [blame] | 561 | void (*orig_state_change)(struct sock *); |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 562 | #define LOGIN_FLAGS_READ_ACTIVE 1 |
| 563 | #define LOGIN_FLAGS_CLOSED 2 |
| 564 | #define LOGIN_FLAGS_READY 4 |
| 565 | unsigned long login_flags; |
| 566 | struct delayed_work login_work; |
Nicholas Bellinger | bb04835 | 2013-09-05 14:54:04 -0700 | [diff] [blame] | 567 | struct delayed_work login_cleanup_work; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 568 | struct iscsi_login *login; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 569 | struct timer_list nopin_timer; |
| 570 | struct timer_list nopin_response_timer; |
| 571 | struct timer_list transport_timer; |
Nicholas Bellinger | d381a80 | 2013-08-15 13:40:17 -0700 | [diff] [blame] | 572 | struct task_struct *login_kworker; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 573 | /* Spinlock used for add/deleting cmd's from conn_cmd_list */ |
| 574 | spinlock_t cmd_lock; |
| 575 | spinlock_t conn_usage_lock; |
| 576 | spinlock_t immed_queue_lock; |
| 577 | spinlock_t nopin_timer_lock; |
| 578 | spinlock_t response_queue_lock; |
| 579 | spinlock_t state_lock; |
| 580 | /* libcrypto RX and TX contexts for crc32c */ |
| 581 | struct hash_desc conn_rx_hash; |
| 582 | struct hash_desc conn_tx_hash; |
| 583 | /* Used for scheduling TX and RX connection kthreads */ |
| 584 | cpumask_var_t conn_cpumask; |
Dan Carpenter | f8d48ae | 2012-01-15 14:30:24 +0300 | [diff] [blame] | 585 | unsigned int conn_rx_reset_cpumask:1; |
| 586 | unsigned int conn_tx_reset_cpumask:1; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 587 | /* list_head of struct iscsi_cmd for this connection */ |
| 588 | struct list_head conn_cmd_list; |
| 589 | struct list_head immed_queue_list; |
| 590 | struct list_head response_queue_list; |
| 591 | struct iscsi_conn_ops *conn_ops; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 592 | struct iscsi_login *conn_login; |
| 593 | struct iscsit_transport *conn_transport; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 594 | struct iscsi_param_list *param_list; |
| 595 | /* Used for per connection auth state machine */ |
| 596 | void *auth_protocol; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 597 | void *context; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 598 | struct iscsi_login_thread_s *login_thread; |
| 599 | struct iscsi_portal_group *tpg; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 600 | struct iscsi_tpg_np *tpg_np; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 601 | /* Pointer to parent session */ |
| 602 | struct iscsi_session *sess; |
| 603 | /* Pointer to thread_set in use for this conn's threads */ |
| 604 | struct iscsi_thread_set *thread_set; |
| 605 | /* list_head for session connection list */ |
| 606 | struct list_head conn_list; |
| 607 | } ____cacheline_aligned; |
| 608 | |
| 609 | struct iscsi_conn_recovery { |
| 610 | u16 cid; |
| 611 | u32 cmd_count; |
| 612 | u32 maxrecvdatasegmentlength; |
Nicholas Bellinger | 1c417f3 | 2012-09-29 22:14:51 -0700 | [diff] [blame] | 613 | u32 maxxmitdatasegmentlength; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 614 | int ready_for_reallegiance; |
| 615 | struct list_head conn_recovery_cmd_list; |
| 616 | spinlock_t conn_recovery_cmd_lock; |
| 617 | struct timer_list time2retain_timer; |
| 618 | struct iscsi_session *sess; |
| 619 | struct list_head cr_list; |
| 620 | } ____cacheline_aligned; |
| 621 | |
| 622 | struct iscsi_session { |
| 623 | u8 initiator_vendor; |
| 624 | u8 isid[6]; |
| 625 | enum iscsi_timer_flags_table time2retain_timer_flags; |
| 626 | u8 version_active; |
| 627 | u16 cid_called; |
| 628 | u16 conn_recovery_count; |
| 629 | u16 tsih; |
| 630 | /* state session is currently in */ |
| 631 | u32 session_state; |
| 632 | /* session wide counter: initiator assigned task tag */ |
Christoph Hellwig | 66c7db6 | 2012-09-26 08:00:39 -0400 | [diff] [blame] | 633 | itt_t init_task_tag; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 634 | /* session wide counter: target assigned task tag */ |
| 635 | u32 targ_xfer_tag; |
| 636 | u32 cmdsn_window; |
| 637 | |
| 638 | /* protects cmdsn values */ |
| 639 | struct mutex cmdsn_mutex; |
| 640 | /* session wide counter: expected command sequence number */ |
| 641 | u32 exp_cmd_sn; |
| 642 | /* session wide counter: maximum allowed command sequence number */ |
| 643 | u32 max_cmd_sn; |
| 644 | struct list_head sess_ooo_cmdsn_list; |
| 645 | |
| 646 | /* LIO specific session ID */ |
| 647 | u32 sid; |
| 648 | char auth_type[8]; |
| 649 | /* unique within the target */ |
| 650 | int session_index; |
| 651 | /* Used for session reference counting */ |
| 652 | int session_usage_count; |
| 653 | int session_waiting_on_uc; |
Nicholas Bellinger | 04f3b31 | 2013-11-13 18:54:45 -0800 | [diff] [blame] | 654 | atomic_long_t cmd_pdus; |
| 655 | atomic_long_t rsp_pdus; |
| 656 | atomic_long_t tx_data_octets; |
| 657 | atomic_long_t rx_data_octets; |
| 658 | atomic_long_t conn_digest_errors; |
| 659 | atomic_long_t conn_timeout_errors; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 660 | u64 creation_time; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 661 | /* Number of active connections */ |
| 662 | atomic_t nconn; |
| 663 | atomic_t session_continuation; |
| 664 | atomic_t session_fall_back_to_erl0; |
| 665 | atomic_t session_logout; |
| 666 | atomic_t session_reinstatement; |
| 667 | atomic_t session_stop_active; |
| 668 | atomic_t sleep_on_sess_wait_comp; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 669 | /* connection list */ |
| 670 | struct list_head sess_conn_list; |
| 671 | struct list_head cr_active_list; |
| 672 | struct list_head cr_inactive_list; |
| 673 | spinlock_t conn_lock; |
| 674 | spinlock_t cr_a_lock; |
| 675 | spinlock_t cr_i_lock; |
| 676 | spinlock_t session_usage_lock; |
| 677 | spinlock_t ttt_lock; |
| 678 | struct completion async_msg_comp; |
| 679 | struct completion reinstatement_comp; |
| 680 | struct completion session_wait_comp; |
| 681 | struct completion session_waiting_on_uc_comp; |
| 682 | struct timer_list time2retain_timer; |
| 683 | struct iscsi_sess_ops *sess_ops; |
| 684 | struct se_session *se_sess; |
| 685 | struct iscsi_portal_group *tpg; |
| 686 | } ____cacheline_aligned; |
| 687 | |
| 688 | struct iscsi_login { |
| 689 | u8 auth_complete; |
| 690 | u8 checked_for_existing; |
| 691 | u8 current_stage; |
| 692 | u8 leading_connection; |
| 693 | u8 first_request; |
| 694 | u8 version_min; |
| 695 | u8 version_max; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 696 | u8 login_complete; |
| 697 | u8 login_failed; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 698 | bool zero_tsih; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 699 | char isid[6]; |
| 700 | u32 cmd_sn; |
Christoph Hellwig | 66c7db6 | 2012-09-26 08:00:39 -0400 | [diff] [blame] | 701 | itt_t init_task_tag; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 702 | u32 initial_exp_statsn; |
| 703 | u32 rsp_length; |
| 704 | u16 cid; |
| 705 | u16 tsih; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 706 | char req[ISCSI_HDR_LEN]; |
| 707 | char rsp[ISCSI_HDR_LEN]; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 708 | char *req_buf; |
| 709 | char *rsp_buf; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 710 | struct iscsi_conn *conn; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 711 | struct iscsi_np *np; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 712 | } ____cacheline_aligned; |
| 713 | |
| 714 | struct iscsi_node_attrib { |
| 715 | u32 dataout_timeout; |
| 716 | u32 dataout_timeout_retries; |
| 717 | u32 default_erl; |
| 718 | u32 nopin_timeout; |
| 719 | u32 nopin_response_timeout; |
| 720 | u32 random_datain_pdu_offsets; |
| 721 | u32 random_datain_seq_offsets; |
| 722 | u32 random_r2t_offsets; |
| 723 | u32 tmr_cold_reset; |
| 724 | u32 tmr_warm_reset; |
| 725 | struct iscsi_node_acl *nacl; |
| 726 | }; |
| 727 | |
| 728 | struct se_dev_entry_s; |
| 729 | |
| 730 | struct iscsi_node_auth { |
| 731 | enum naf_flags_table naf_flags; |
| 732 | int authenticate_target; |
| 733 | /* Used for iscsit_global->discovery_auth, |
| 734 | * set to zero (auth disabled) by default */ |
| 735 | int enforce_discovery_auth; |
| 736 | #define MAX_USER_LEN 256 |
| 737 | #define MAX_PASS_LEN 256 |
| 738 | char userid[MAX_USER_LEN]; |
| 739 | char password[MAX_PASS_LEN]; |
| 740 | char userid_mutual[MAX_USER_LEN]; |
| 741 | char password_mutual[MAX_PASS_LEN]; |
| 742 | }; |
| 743 | |
| 744 | #include "iscsi_target_stat.h" |
| 745 | |
| 746 | struct iscsi_node_stat_grps { |
| 747 | struct config_group iscsi_sess_stats_group; |
| 748 | struct config_group iscsi_conn_stats_group; |
| 749 | }; |
| 750 | |
| 751 | struct iscsi_node_acl { |
| 752 | struct iscsi_node_attrib node_attrib; |
| 753 | struct iscsi_node_auth node_auth; |
| 754 | struct iscsi_node_stat_grps node_stat_grps; |
| 755 | struct se_node_acl se_node_acl; |
| 756 | }; |
| 757 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 758 | struct iscsi_tpg_attrib { |
| 759 | u32 authentication; |
| 760 | u32 login_timeout; |
| 761 | u32 netif_timeout; |
| 762 | u32 generate_node_acls; |
| 763 | u32 cache_dynamic_acls; |
| 764 | u32 default_cmdsn_depth; |
| 765 | u32 demo_mode_write_protect; |
| 766 | u32 prod_mode_write_protect; |
Thomas Glanzmann | 4c54b6c | 2013-10-07 23:12:11 +0200 | [diff] [blame] | 767 | u32 demo_mode_discovery; |
Nicholas Bellinger | d1fa7a1 | 2013-11-20 11:57:18 -0800 | [diff] [blame] | 768 | u32 default_erl; |
Sagi Grimberg | 5b168dc | 2014-02-19 17:50:19 +0200 | [diff] [blame] | 769 | u8 t10_pi; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 770 | struct iscsi_portal_group *tpg; |
| 771 | }; |
| 772 | |
| 773 | struct iscsi_np { |
| 774 | int np_network_transport; |
| 775 | int np_ip_proto; |
| 776 | int np_sock_type; |
| 777 | enum np_thread_state_table np_thread_state; |
Sagi Grimberg | 14f4b54 | 2014-04-29 13:13:47 +0300 | [diff] [blame] | 778 | bool enabled; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 779 | enum iscsi_timer_flags_table np_login_timer_flags; |
| 780 | u32 np_exports; |
| 781 | enum np_flags_table np_flags; |
| 782 | unsigned char np_ip[IPV6_ADDRESS_SPACE]; |
| 783 | u16 np_port; |
| 784 | spinlock_t np_thread_lock; |
| 785 | struct completion np_restart_comp; |
| 786 | struct socket *np_socket; |
| 787 | struct __kernel_sockaddr_storage np_sockaddr; |
| 788 | struct task_struct *np_thread; |
| 789 | struct timer_list np_login_timer; |
Nicholas Bellinger | baa4d64 | 2013-03-06 21:54:13 -0800 | [diff] [blame] | 790 | void *np_context; |
| 791 | struct iscsit_transport *np_transport; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 792 | struct list_head np_list; |
| 793 | } ____cacheline_aligned; |
| 794 | |
| 795 | struct iscsi_tpg_np { |
| 796 | struct iscsi_np *tpg_np; |
| 797 | struct iscsi_portal_group *tpg; |
| 798 | struct iscsi_tpg_np *tpg_np_parent; |
| 799 | struct list_head tpg_np_list; |
| 800 | struct list_head tpg_np_child_list; |
| 801 | struct list_head tpg_np_parent_list; |
| 802 | struct se_tpg_np se_tpg_np; |
| 803 | spinlock_t tpg_np_parent_lock; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 804 | struct completion tpg_np_comp; |
| 805 | struct kref tpg_np_kref; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 806 | }; |
| 807 | |
| 808 | struct iscsi_portal_group { |
| 809 | unsigned char tpg_chap_id; |
| 810 | /* TPG State */ |
| 811 | enum tpg_state_table tpg_state; |
| 812 | /* Target Portal Group Tag */ |
| 813 | u16 tpgt; |
| 814 | /* Id assigned to target sessions */ |
| 815 | u16 ntsih; |
| 816 | /* Number of active sessions */ |
| 817 | u32 nsessions; |
| 818 | /* Number of Network Portals available for this TPG */ |
| 819 | u32 num_tpg_nps; |
| 820 | /* Per TPG LIO specific session ID. */ |
| 821 | u32 sid; |
| 822 | /* Spinlock for adding/removing Network Portals */ |
| 823 | spinlock_t tpg_np_lock; |
| 824 | spinlock_t tpg_state_lock; |
| 825 | struct se_portal_group tpg_se_tpg; |
| 826 | struct mutex tpg_access_lock; |
Nicholas Bellinger | a91eb7d | 2013-08-15 12:49:02 -0700 | [diff] [blame] | 827 | struct semaphore np_login_sem; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 828 | struct iscsi_tpg_attrib tpg_attrib; |
Nicholas Bellinger | c3e5144 | 2013-06-19 18:48:51 -0700 | [diff] [blame] | 829 | struct iscsi_node_auth tpg_demo_auth; |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 830 | /* Pointer to default list of iSCSI parameters for TPG */ |
| 831 | struct iscsi_param_list *param_list; |
| 832 | struct iscsi_tiqn *tpg_tiqn; |
| 833 | struct list_head tpg_gnp_list; |
| 834 | struct list_head tpg_list; |
| 835 | } ____cacheline_aligned; |
| 836 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 837 | struct iscsi_wwn_stat_grps { |
| 838 | struct config_group iscsi_stat_group; |
| 839 | struct config_group iscsi_instance_group; |
| 840 | struct config_group iscsi_sess_err_group; |
| 841 | struct config_group iscsi_tgt_attr_group; |
| 842 | struct config_group iscsi_login_stats_group; |
| 843 | struct config_group iscsi_logout_stats_group; |
| 844 | }; |
| 845 | |
| 846 | struct iscsi_tiqn { |
| 847 | #define ISCSI_IQN_LEN 224 |
| 848 | unsigned char tiqn[ISCSI_IQN_LEN]; |
| 849 | enum tiqn_state_table tiqn_state; |
| 850 | int tiqn_access_count; |
| 851 | u32 tiqn_active_tpgs; |
| 852 | u32 tiqn_ntpgs; |
| 853 | u32 tiqn_num_tpg_nps; |
| 854 | u32 tiqn_nsessions; |
| 855 | struct list_head tiqn_list; |
| 856 | struct list_head tiqn_tpg_list; |
| 857 | spinlock_t tiqn_state_lock; |
| 858 | spinlock_t tiqn_tpg_lock; |
| 859 | struct se_wwn tiqn_wwn; |
| 860 | struct iscsi_wwn_stat_grps tiqn_stat_grps; |
| 861 | int tiqn_index; |
| 862 | struct iscsi_sess_err_stats sess_err_stats; |
| 863 | struct iscsi_login_stats login_stats; |
| 864 | struct iscsi_logout_stats logout_stats; |
| 865 | } ____cacheline_aligned; |
| 866 | |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 867 | struct iscsit_global { |
| 868 | /* In core shutdown */ |
| 869 | u32 in_shutdown; |
| 870 | u32 active_ts; |
| 871 | /* Unique identifier used for the authentication daemon */ |
| 872 | u32 auth_id; |
| 873 | u32 inactive_ts; |
| 874 | /* Thread Set bitmap count */ |
| 875 | int ts_bitmap_count; |
| 876 | /* Thread Set bitmap pointer */ |
| 877 | unsigned long *ts_bitmap; |
| 878 | /* Used for iSCSI discovery session authentication */ |
| 879 | struct iscsi_node_acl discovery_acl; |
| 880 | struct iscsi_portal_group *discovery_tpg; |
| 881 | }; |
| 882 | |
Sagi Grimberg | c1e34b6 | 2015-01-26 12:49:05 +0200 | [diff] [blame] | 883 | static inline u32 session_get_next_ttt(struct iscsi_session *session) |
| 884 | { |
| 885 | u32 ttt; |
| 886 | |
| 887 | spin_lock_bh(&session->ttt_lock); |
| 888 | ttt = session->targ_xfer_tag++; |
| 889 | if (ttt == 0xFFFFFFFF) |
| 890 | ttt = session->targ_xfer_tag++; |
| 891 | spin_unlock_bh(&session->ttt_lock); |
| 892 | |
| 893 | return ttt; |
| 894 | } |
| 895 | |
Sagi Grimberg | e4f4e80 | 2015-02-09 18:07:25 +0200 | [diff] [blame] | 896 | extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t); |
Nicholas Bellinger | e48354c | 2011-07-23 06:43:04 +0000 | [diff] [blame] | 897 | #endif /* ISCSI_TARGET_CORE_H */ |