1fcf3ce44SJohn Forte /* 2fcf3ce44SJohn Forte * CDDL HEADER START 3fcf3ce44SJohn Forte * 4fcf3ce44SJohn Forte * The contents of this file are subject to the terms of the 5fcf3ce44SJohn Forte * Common Development and Distribution License (the "License"). 6fcf3ce44SJohn Forte * You may not use this file except in compliance with the License. 7fcf3ce44SJohn Forte * 8fcf3ce44SJohn Forte * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fcf3ce44SJohn Forte * or http://www.opensolaris.org/os/licensing. 10fcf3ce44SJohn Forte * See the License for the specific language governing permissions 11fcf3ce44SJohn Forte * and limitations under the License. 12fcf3ce44SJohn Forte * 13fcf3ce44SJohn Forte * When distributing Covered Code, include this CDDL HEADER in each 14fcf3ce44SJohn Forte * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fcf3ce44SJohn Forte * If applicable, add the following below this CDDL HEADER, with the 16fcf3ce44SJohn Forte * fields enclosed by brackets "[]" replaced with your own identifying 17fcf3ce44SJohn Forte * information: Portions Copyright [yyyy] [name of copyright owner] 18fcf3ce44SJohn Forte * 19fcf3ce44SJohn Forte * CDDL HEADER END 20fcf3ce44SJohn Forte */ 21fcf3ce44SJohn Forte /* 22fcf3ce44SJohn Forte * Copyright 2000 by Cisco Systems, Inc. All rights reserved. 231a1a84a3SPeter Dunlap * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24fcf3ce44SJohn Forte * Use is subject to license terms. 25fcf3ce44SJohn Forte * 26fcf3ce44SJohn Forte * iSCSI Pseudo HBA Driver 27fcf3ce44SJohn Forte */ 28fcf3ce44SJohn Forte 29fcf3ce44SJohn Forte #include <sys/socket.h> /* networking stuff */ 30fcf3ce44SJohn Forte #include <sys/t_kuser.h> /* networking stuff */ 31fcf3ce44SJohn Forte #include <sys/tihdr.h> /* networking stuff */ 32fcf3ce44SJohn Forte #include <sys/strsubr.h> /* networking stuff */ 33fcf3ce44SJohn Forte #include <netinet/tcp.h> /* TCP_NODELAY */ 34fcf3ce44SJohn Forte #include <sys/socketvar.h> /* _ALLOC_SLEEP */ 35fcf3ce44SJohn Forte #include <sys/strsun.h> /* DB_TYPE() */ 362b79d384Sbing zhao - Sun Microsystems - Beijing China #include <sys/scsi/generic/sense.h> 37fcf3ce44SJohn Forte 38fcf3ce44SJohn Forte #include "iscsi.h" /* iscsi driver */ 391a1a84a3SPeter Dunlap #include <sys/iscsi_protocol.h> /* iscsi protocol */ 40fcf3ce44SJohn Forte 4130e7468fSPeter Dunlap #define ISCSI_INI_TASK_TTT 0xffffffff 42aff4bce5Syi zhang - Sun Microsystems - Beijing China #define ISCSI_CONN_TIEMOUT_DETECT 20 4330e7468fSPeter Dunlap 4430e7468fSPeter Dunlap boolean_t iscsi_io_logging = B_FALSE; 4530e7468fSPeter Dunlap 4630e7468fSPeter Dunlap #define ISCSI_CHECK_SCSI_READ(ICHK_CMD, ICHK_HDR, ICHK_LEN, ICHK_TYPE) \ 4730e7468fSPeter Dunlap if (idm_pattern_checking) { \ 4830e7468fSPeter Dunlap struct scsi_pkt *pkt = (ICHK_CMD)->cmd_un.scsi.pkt; \ 4930e7468fSPeter Dunlap if (((ICHK_HDR)->response == 0) && \ 5030e7468fSPeter Dunlap ((ICHK_HDR)->cmd_status == 0) && \ 5130e7468fSPeter Dunlap ((pkt->pkt_cdbp[0] == SCMD_READ_G1) || \ 5230e7468fSPeter Dunlap (pkt->pkt_cdbp[0] == SCMD_READ_G4) || \ 5330e7468fSPeter Dunlap (pkt->pkt_cdbp[0] == SCMD_READ) || \ 5430e7468fSPeter Dunlap (pkt->pkt_cdbp[0] == SCMD_READ_G5))) { \ 5530e7468fSPeter Dunlap idm_buf_t *idb = (ICHK_CMD)->cmd_un.scsi.ibp_ibuf; \ 5630e7468fSPeter Dunlap IDM_BUFPAT_CHECK(idb, ICHK_LEN, ICHK_TYPE); \ 5730e7468fSPeter Dunlap } \ 5830e7468fSPeter Dunlap } 5930e7468fSPeter Dunlap 60fcf3ce44SJohn Forte /* generic io helpers */ 61fcf3ce44SJohn Forte static uint32_t n2h24(uchar_t *ptr); 62fcf3ce44SJohn Forte static int iscsi_sna_lt(uint32_t n1, uint32_t n2); 6330e7468fSPeter Dunlap void iscsi_update_flow_control(iscsi_sess_t *isp, 64fcf3ce44SJohn Forte uint32_t max, uint32_t exp); 6530e7468fSPeter Dunlap static iscsi_status_t iscsi_rx_process_scsi_itt_to_icmdp(iscsi_sess_t *isp, 6630e7468fSPeter Dunlap idm_conn_t *ic, iscsi_scsi_rsp_hdr_t *ihp, iscsi_cmd_t **icmdp); 67fcf3ce44SJohn Forte static iscsi_status_t iscsi_rx_process_itt_to_icmdp(iscsi_sess_t *isp, 68fcf3ce44SJohn Forte iscsi_hdr_t *ihp, iscsi_cmd_t **icmdp); 6930e7468fSPeter Dunlap static void iscsi_process_rsp_status(iscsi_sess_t *isp, iscsi_conn_t *icp, 7030e7468fSPeter Dunlap idm_status_t status); 7130e7468fSPeter Dunlap static void iscsi_drop_conn_cleanup(iscsi_conn_t *icp); 72aff4bce5Syi zhang - Sun Microsystems - Beijing China static boolean_t iscsi_nop_timeout_checks(iscsi_cmd_t *icmdp); 7330e7468fSPeter Dunlap /* callbacks from idm */ 7430e7468fSPeter Dunlap static idm_pdu_cb_t iscsi_tx_done; 7530e7468fSPeter Dunlap 7630e7468fSPeter Dunlap /* receivers */ 7730e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_nop(idm_conn_t *ic, idm_pdu_t *pdu); 7830e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_data_rsp(idm_conn_t *ic, 7930e7468fSPeter Dunlap idm_pdu_t *pdu); 8030e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_cmd_rsp(idm_conn_t *ic, idm_pdu_t *pdu); 8130e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_reject_rsp(idm_conn_t *ic, 8230e7468fSPeter Dunlap idm_pdu_t *pdu); 8330e7468fSPeter Dunlap 8430e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_rejected_tsk_mgt(idm_conn_t *ic, 8530e7468fSPeter Dunlap iscsi_hdr_t *old_ihp); 8630e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_task_mgt_rsp(idm_conn_t *ic, 8730e7468fSPeter Dunlap idm_pdu_t *pdu); 8830e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_logout_rsp(idm_conn_t *ic, 8930e7468fSPeter Dunlap idm_pdu_t *pdu); 9030e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_async_rsp(idm_conn_t *ic, 9130e7468fSPeter Dunlap idm_pdu_t *pdu); 9230e7468fSPeter Dunlap static idm_status_t iscsi_rx_process_text_rsp(idm_conn_t *ic, 9330e7468fSPeter Dunlap idm_pdu_t *pdu); 94fcf3ce44SJohn Forte 95fcf3ce44SJohn Forte /* senders */ 96fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_scsi(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 97fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_nop(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 98fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_abort(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 99fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_reset(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 100fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_logout(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 101fcf3ce44SJohn Forte static iscsi_status_t iscsi_tx_text(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 102fcf3ce44SJohn Forte 103fcf3ce44SJohn Forte 104fcf3ce44SJohn Forte /* helpers */ 10530e7468fSPeter Dunlap static void iscsi_logout_start(void *arg); 106fcf3ce44SJohn Forte static void iscsi_handle_passthru_callback(struct scsi_pkt *pkt); 107fcf3ce44SJohn Forte static void iscsi_handle_nop(iscsi_conn_t *icp, uint32_t itt, uint32_t ttt); 108fcf3ce44SJohn Forte 109fcf3ce44SJohn Forte static void iscsi_timeout_checks(iscsi_sess_t *isp); 110fcf3ce44SJohn Forte static void iscsi_nop_checks(iscsi_sess_t *isp); 1112b79d384Sbing zhao - Sun Microsystems - Beijing China static boolean_t iscsi_decode_sense(uint8_t *sense_data); 1122b79d384Sbing zhao - Sun Microsystems - Beijing China static void iscsi_flush_cmd_after_reset(uint32_t cmd_sn, uint16_t lun_num, 1132b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_conn_t *icp); 114fcf3ce44SJohn Forte 115fcf3ce44SJohn Forte /* 116fcf3ce44SJohn Forte * This file contains the main guts of the iSCSI protocol layer. 117fcf3ce44SJohn Forte * It's broken into 5 sections; Basic helper functions, RX IO path, 118fcf3ce44SJohn Forte * TX IO path, Completion (IC) IO path, and watchdog (WD) routines. 119fcf3ce44SJohn Forte * 120fcf3ce44SJohn Forte * The IO flow model is similiar to the below diagram. The 121fcf3ce44SJohn Forte * iscsi session, connection and command state machines are used 122fcf3ce44SJohn Forte * to drive IO through this flow diagram. Reference those files 123fcf3ce44SJohn Forte * to get a detailed description of their respective state models 124fcf3ce44SJohn Forte * prior to their xxx_state_machine_function(). 125fcf3ce44SJohn Forte * 126fcf3ce44SJohn Forte * tran_start() -> CMD_E1 TX_THREAD RX_THREAD 127fcf3ce44SJohn Forte * | T T 128fcf3ce44SJohn Forte * V T T 129fcf3ce44SJohn Forte * PENDING_Q --CMD_E2--> ACTIVE_Q - --CMD_E3--+ 130fcf3ce44SJohn Forte * T \ C T | 131fcf3ce44SJohn Forte * T \M T | 132fcf3ce44SJohn Forte * D T | 133fcf3ce44SJohn Forte * WD_THREAD TT|TT T | 134fcf3ce44SJohn Forte * /E T | 135fcf3ce44SJohn Forte * / 6 T | 136fcf3ce44SJohn Forte * ABORTING_Q<- --CMD_E3--+ 137fcf3ce44SJohn Forte * T | 138fcf3ce44SJohn Forte * T T | 139fcf3ce44SJohn Forte * T | 140fcf3ce44SJohn Forte * callback() <--CMD_E#-- COMPLETION_Q <------------+ 141fcf3ce44SJohn Forte * T 142fcf3ce44SJohn Forte * T 143fcf3ce44SJohn Forte * IC_THREAD 144fcf3ce44SJohn Forte * 145fcf3ce44SJohn Forte * External and internal command are ran thru this same state 146fcf3ce44SJohn Forte * machine. All commands enter the state machine by receiving an 147fcf3ce44SJohn Forte * ISCSI_CMD_EVENT_E1. This event places the command into the 148fcf3ce44SJohn Forte * PENDING_Q. Next when resources are available the TX_THREAD 149fcf3ce44SJohn Forte * issues a E2 event on the command. This sends the command 150fcf3ce44SJohn Forte * to the TCP stack and places the command on the ACTIVE_Q. While 151fcf3ce44SJohn Forte * on the PENDIING_Q and ACTIVE_Q, the command is monitored via the 152fcf3ce44SJohn Forte * WD_THREAD to ensure the pkt_time has not elapsed. If elapsed the 153fcf3ce44SJohn Forte * command is issued an E6(timeout) event which moves either (if pending) 154fcf3ce44SJohn Forte * completed the command or (if active) moves the command to the 155fcf3ce44SJohn Forte * aborting queue and issues a SCSI TASK MANAGEMENT ABORT command 156fcf3ce44SJohn Forte * to cancel the IO request. If the original command is completed 157fcf3ce44SJohn Forte * or the TASK MANAGEMENT command completes the command is moved 158fcf3ce44SJohn Forte * to the COMPLETION_Q via a E3 event. The IC_THREAD then processes 159fcf3ce44SJohn Forte * the COMPLETION_Q and issues the scsi_pkt callback. This 160fcf3ce44SJohn Forte * callback can not be processed directly from the RX_THREAD 161fcf3ce44SJohn Forte * because the callback might call back into the iscsi driver 162fcf3ce44SJohn Forte * causing a deadlock condition. 163fcf3ce44SJohn Forte * 164fcf3ce44SJohn Forte * For more details on the complete CMD state machine reference 165fcf3ce44SJohn Forte * the state machine diagram in iscsi_cmd.c. The connection state 166fcf3ce44SJohn Forte * machine is driven via IO events in this file. Then session 167fcf3ce44SJohn Forte * events are driven by the connection events. For complete 168fcf3ce44SJohn Forte * details on these state machines reference iscsi_sess.c and 169fcf3ce44SJohn Forte * iscsi_conn.c 170fcf3ce44SJohn Forte */ 171fcf3ce44SJohn Forte 172fcf3ce44SJohn Forte 173fcf3ce44SJohn Forte /* 174fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 175fcf3ce44SJohn Forte * | io helper routines | 176fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 177fcf3ce44SJohn Forte */ 178fcf3ce44SJohn Forte 179fcf3ce44SJohn Forte /* 180fcf3ce44SJohn Forte * n2h24 - native to host 24 bit integer translation. 181fcf3ce44SJohn Forte */ 182fcf3ce44SJohn Forte static uint32_t 183fcf3ce44SJohn Forte n2h24(uchar_t *ptr) 184fcf3ce44SJohn Forte { 185fcf3ce44SJohn Forte uint32_t idx; 186fcf3ce44SJohn Forte bcopy(ptr, &idx, 3); 187fcf3ce44SJohn Forte return (ntohl(idx) >> 8); 188fcf3ce44SJohn Forte } 189fcf3ce44SJohn Forte 190fcf3ce44SJohn Forte /* 191fcf3ce44SJohn Forte * iscsi_sna_lt - Serial Number Arithmetic, 32 bits, less than, RFC1982 192fcf3ce44SJohn Forte */ 193fcf3ce44SJohn Forte static int 194fcf3ce44SJohn Forte iscsi_sna_lt(uint32_t n1, uint32_t n2) 195fcf3ce44SJohn Forte { 196fcf3ce44SJohn Forte return ((n1 != n2) && 197fcf3ce44SJohn Forte (((n1 < n2) && ((n2 - n1) < ISCSI_SNA32_CHECK)) || 198fcf3ce44SJohn Forte ((n1 > n2) && ((n1 - n2) > ISCSI_SNA32_CHECK)))); 199fcf3ce44SJohn Forte } 200fcf3ce44SJohn Forte 201fcf3ce44SJohn Forte /* 202fcf3ce44SJohn Forte * iscsi_sna_lte - Serial Number Arithmetic, 32 bits, less than or equal, 203fcf3ce44SJohn Forte * RFC1982 204fcf3ce44SJohn Forte */ 205fcf3ce44SJohn Forte int 206fcf3ce44SJohn Forte iscsi_sna_lte(uint32_t n1, uint32_t n2) 207fcf3ce44SJohn Forte { 208fcf3ce44SJohn Forte return ((n1 == n2) || 209fcf3ce44SJohn Forte (((n1 < n2) && ((n2 - n1) < ISCSI_SNA32_CHECK)) || 210fcf3ce44SJohn Forte ((n1 > n2) && ((n1 - n2) > ISCSI_SNA32_CHECK)))); 211fcf3ce44SJohn Forte } 212fcf3ce44SJohn Forte 213fcf3ce44SJohn Forte /* 214fcf3ce44SJohn Forte * iscsi_update_flow_control - Update expcmdsn and maxcmdsn iSCSI 215fcf3ce44SJohn Forte * flow control information for a session 216fcf3ce44SJohn Forte */ 21730e7468fSPeter Dunlap void 218fcf3ce44SJohn Forte iscsi_update_flow_control(iscsi_sess_t *isp, uint32_t max, uint32_t exp) 219fcf3ce44SJohn Forte { 220fcf3ce44SJohn Forte ASSERT(isp != NULL); 221fcf3ce44SJohn Forte ASSERT(mutex_owned(&isp->sess_cmdsn_mutex)); 222fcf3ce44SJohn Forte 223fcf3ce44SJohn Forte if (!iscsi_sna_lt(max, (exp - 1))) { 224fcf3ce44SJohn Forte 225fcf3ce44SJohn Forte if (!iscsi_sna_lte(exp, isp->sess_expcmdsn)) { 226fcf3ce44SJohn Forte isp->sess_expcmdsn = exp; 227fcf3ce44SJohn Forte } 228fcf3ce44SJohn Forte 229fcf3ce44SJohn Forte if (!iscsi_sna_lte(max, isp->sess_maxcmdsn)) { 230fcf3ce44SJohn Forte isp->sess_maxcmdsn = max; 231fcf3ce44SJohn Forte if (iscsi_sna_lte(isp->sess_cmdsn, 232fcf3ce44SJohn Forte isp->sess_maxcmdsn)) { 233fcf3ce44SJohn Forte /* 234fcf3ce44SJohn Forte * the window is open again - schedule 235fcf3ce44SJohn Forte * to send any held tasks soon 236fcf3ce44SJohn Forte */ 237fcf3ce44SJohn Forte iscsi_sess_redrive_io(isp); 238fcf3ce44SJohn Forte } 239fcf3ce44SJohn Forte } 240fcf3ce44SJohn Forte } 241fcf3ce44SJohn Forte } 242fcf3ce44SJohn Forte 243fcf3ce44SJohn Forte 244fcf3ce44SJohn Forte /* 245fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 246fcf3ce44SJohn Forte * | io receive and processing routines | 247fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 248fcf3ce44SJohn Forte */ 249fcf3ce44SJohn Forte 250fcf3ce44SJohn Forte /* 25130e7468fSPeter Dunlap * iscsi_rx_scsi_rsp - called from idm 25230e7468fSPeter Dunlap * For each opcode type fan out the processing. 253fcf3ce44SJohn Forte */ 254fcf3ce44SJohn Forte void 25530e7468fSPeter Dunlap iscsi_rx_scsi_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 256fcf3ce44SJohn Forte { 25730e7468fSPeter Dunlap iscsi_conn_t *icp; 25830e7468fSPeter Dunlap iscsi_sess_t *isp; 25930e7468fSPeter Dunlap iscsi_hdr_t *ihp; 26030e7468fSPeter Dunlap idm_status_t status; 261fcf3ce44SJohn Forte 26230e7468fSPeter Dunlap ASSERT(ic != NULL); 26330e7468fSPeter Dunlap ASSERT(pdu != NULL); 26430e7468fSPeter Dunlap icp = ic->ic_handle; 265fcf3ce44SJohn Forte ASSERT(icp != NULL); 26630e7468fSPeter Dunlap ihp = (iscsi_hdr_t *)pdu->isp_hdr; 267fcf3ce44SJohn Forte ASSERT(ihp != NULL); 26830e7468fSPeter Dunlap isp = icp->conn_sess; 269fcf3ce44SJohn Forte ASSERT(isp != NULL); 270fcf3ce44SJohn Forte 27130e7468fSPeter Dunlap /* reset the session timer when we receive the response */ 27230e7468fSPeter Dunlap isp->sess_rx_lbolt = icp->conn_rx_lbolt = ddi_get_lbolt(); 273fcf3ce44SJohn Forte 274fcf3ce44SJohn Forte /* fan out the hdr processing */ 275fcf3ce44SJohn Forte switch (ihp->opcode & ISCSI_OPCODE_MASK) { 276fcf3ce44SJohn Forte case ISCSI_OP_SCSI_DATA_RSP: 27730e7468fSPeter Dunlap status = iscsi_rx_process_data_rsp(ic, pdu); 278fcf3ce44SJohn Forte break; 279fcf3ce44SJohn Forte case ISCSI_OP_SCSI_RSP: 28030e7468fSPeter Dunlap status = iscsi_rx_process_cmd_rsp(ic, pdu); 28130e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 282fcf3ce44SJohn Forte break; 283fcf3ce44SJohn Forte default: 284fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol error - " 28530e7468fSPeter Dunlap "received pdu with unsupported opcode 0x%02x", 286fcf3ce44SJohn Forte icp->conn_oid, ihp->opcode); 28730e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 288fcf3ce44SJohn Forte } 28930e7468fSPeter Dunlap iscsi_process_rsp_status(isp, icp, status); 290fcf3ce44SJohn Forte } 291fcf3ce44SJohn Forte 29230e7468fSPeter Dunlap void 29330e7468fSPeter Dunlap iscsi_task_cleanup(int opcode, iscsi_cmd_t *icmdp) 294fcf3ce44SJohn Forte { 29530e7468fSPeter Dunlap struct buf *bp; 29630e7468fSPeter Dunlap idm_buf_t *ibp, *obp; 29730e7468fSPeter Dunlap idm_task_t *itp; 298fcf3ce44SJohn Forte 29930e7468fSPeter Dunlap itp = icmdp->cmd_itp; 30030e7468fSPeter Dunlap ASSERT(itp != NULL); 30130e7468fSPeter Dunlap ASSERT((opcode == ISCSI_OP_SCSI_DATA_RSP) || 30230e7468fSPeter Dunlap (opcode == ISCSI_OP_SCSI_RSP)); 303fcf3ce44SJohn Forte 30430e7468fSPeter Dunlap bp = icmdp->cmd_un.scsi.bp; 30530e7468fSPeter Dunlap ibp = icmdp->cmd_un.scsi.ibp_ibuf; 30630e7468fSPeter Dunlap obp = icmdp->cmd_un.scsi.ibp_obuf; 30730e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: task_cleanup: itp: %p opcode: %d " 30830e7468fSPeter Dunlap "icmdp: %p bp: %p ibp: %p", (void *)itp, opcode, 30930e7468fSPeter Dunlap (void *)icmdp, (void *)bp, (void *)ibp); 31030e7468fSPeter Dunlap if (bp && bp->b_bcount) { 31130e7468fSPeter Dunlap if (ibp != NULL && bp->b_flags & B_READ) { 31230e7468fSPeter Dunlap idm_buf_unbind_in(itp, ibp); 31330e7468fSPeter Dunlap idm_buf_free(ibp); 31430e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_ibuf = NULL; 31530e7468fSPeter Dunlap } else if (obp != NULL && !(bp->b_flags & B_READ)) { 31630e7468fSPeter Dunlap idm_buf_unbind_out(itp, obp); 31730e7468fSPeter Dunlap idm_buf_free(obp); 31830e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_obuf = NULL; 319fcf3ce44SJohn Forte } 320fcf3ce44SJohn Forte } 321fcf3ce44SJohn Forte 32230e7468fSPeter Dunlap idm_task_done(itp); 32330e7468fSPeter Dunlap } 32430e7468fSPeter Dunlap 32530e7468fSPeter Dunlap idm_status_t 32630e7468fSPeter Dunlap iscsi_rx_chk(iscsi_conn_t *icp, iscsi_sess_t *isp, 32730e7468fSPeter Dunlap iscsi_scsi_rsp_hdr_t *irhp, iscsi_cmd_t **icmdp) 32830e7468fSPeter Dunlap { 32930e7468fSPeter Dunlap iscsi_status_t rval; 33030e7468fSPeter Dunlap 331fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 33230e7468fSPeter Dunlap 33330e7468fSPeter Dunlap if (icp->conn_expstatsn == ntohl(irhp->statsn)) { 33430e7468fSPeter Dunlap icp->conn_expstatsn++; 33530e7468fSPeter Dunlap } else { 33630e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi connection(%u/%x) protocol error - " 33730e7468fSPeter Dunlap "received status out of order itt:0x%x statsn:0x%x " 33830e7468fSPeter Dunlap "expstatsn:0x%x", icp->conn_oid, irhp->opcode, 33930e7468fSPeter Dunlap irhp->itt, ntohl(irhp->statsn), icp->conn_expstatsn); 340fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 34130e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 34230e7468fSPeter Dunlap } 34330e7468fSPeter Dunlap 34430e7468fSPeter Dunlap /* get icmdp so we can cleanup on error */ 34530e7468fSPeter Dunlap if ((irhp->opcode == ISCSI_OP_SCSI_DATA_RSP) || 34630e7468fSPeter Dunlap (irhp->opcode == ISCSI_OP_SCSI_RSP)) { 34730e7468fSPeter Dunlap rval = iscsi_rx_process_scsi_itt_to_icmdp(isp, icp->conn_ic, 34830e7468fSPeter Dunlap irhp, icmdp); 34930e7468fSPeter Dunlap } else { 35030e7468fSPeter Dunlap rval = iscsi_rx_process_itt_to_icmdp(isp, 35130e7468fSPeter Dunlap (iscsi_hdr_t *)irhp, icmdp); 35230e7468fSPeter Dunlap } 35330e7468fSPeter Dunlap 35430e7468fSPeter Dunlap if (!ISCSI_SUCCESS(rval)) { 35530e7468fSPeter Dunlap mutex_exit(&isp->sess_cmdsn_mutex); 35630e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 357fcf3ce44SJohn Forte } 358fcf3ce44SJohn Forte 359fcf3ce44SJohn Forte /* update expcmdsn and maxcmdsn */ 36030e7468fSPeter Dunlap iscsi_update_flow_control(isp, ntohl(irhp->maxcmdsn), 36130e7468fSPeter Dunlap ntohl(irhp->expcmdsn)); 362fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 36330e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 36430e7468fSPeter Dunlap } 365fcf3ce44SJohn Forte 36630e7468fSPeter Dunlap static void 36730e7468fSPeter Dunlap iscsi_cmd_rsp_chk(iscsi_cmd_t *icmdp, iscsi_scsi_rsp_hdr_t *issrhp) 36830e7468fSPeter Dunlap { 36930e7468fSPeter Dunlap struct scsi_pkt *pkt; 37030e7468fSPeter Dunlap size_t data_transferred; 371fcf3ce44SJohn Forte 37230e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 37330e7468fSPeter Dunlap pkt->pkt_resid = 0; 37430e7468fSPeter Dunlap data_transferred = icmdp->cmd_un.scsi.data_transferred; 37530e7468fSPeter Dunlap /* Check the residual count */ 37630e7468fSPeter Dunlap if ((icmdp->cmd_un.scsi.bp) && 37730e7468fSPeter Dunlap (data_transferred != icmdp->cmd_un.scsi.bp->b_bcount)) { 378fcf3ce44SJohn Forte /* 37930e7468fSPeter Dunlap * We didn't xfer the expected amount of data - 38030e7468fSPeter Dunlap * the residual_count in the header is only 38130e7468fSPeter Dunlap * valid if the underflow flag is set. 382fcf3ce44SJohn Forte */ 38330e7468fSPeter Dunlap if (issrhp->flags & ISCSI_FLAG_CMD_UNDERFLOW) { 38430e7468fSPeter Dunlap pkt->pkt_resid = ntohl(issrhp->residual_count); 38530e7468fSPeter Dunlap } else { 38630e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.bp->b_bcount > 38730e7468fSPeter Dunlap data_transferred) { 38830e7468fSPeter Dunlap /* 38930e7468fSPeter Dunlap * Some data fell on the floor 39030e7468fSPeter Dunlap * somehow - probably a CRC error 39130e7468fSPeter Dunlap */ 39230e7468fSPeter Dunlap pkt->pkt_resid = 39330e7468fSPeter Dunlap icmdp->cmd_un.scsi.bp->b_bcount - 39430e7468fSPeter Dunlap data_transferred; 39530e7468fSPeter Dunlap } 396fcf3ce44SJohn Forte } 39730e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 39830e7468fSPeter Dunlap "DEBUG: iscsi_rx_cmd_rsp_chk: itt: %u" 39930e7468fSPeter Dunlap "data_trans != b_count data_transferred: %lu " 40030e7468fSPeter Dunlap "b_count: %lu cmd_status: %d flags: %d resid: %lu", 40130e7468fSPeter Dunlap issrhp->itt, data_transferred, 40230e7468fSPeter Dunlap icmdp->cmd_un.scsi.bp->b_bcount, 40330e7468fSPeter Dunlap issrhp->cmd_status & STATUS_MASK, 40430e7468fSPeter Dunlap issrhp->flags, pkt->pkt_resid); 40530e7468fSPeter Dunlap } 40630e7468fSPeter Dunlap /* set flags that tell SCSA that the command is complete */ 40730e7468fSPeter Dunlap if (icmdp->cmd_crc_error_seen == B_FALSE) { 40830e7468fSPeter Dunlap /* Set successful completion */ 40930e7468fSPeter Dunlap pkt->pkt_reason = CMD_CMPLT; 41030e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.bp) { 41130e7468fSPeter Dunlap pkt->pkt_state |= (STATE_XFERRED_DATA | 41230e7468fSPeter Dunlap STATE_GOT_STATUS); 41330e7468fSPeter Dunlap } else { 41430e7468fSPeter Dunlap pkt->pkt_state |= STATE_GOT_STATUS; 41530e7468fSPeter Dunlap } 41630e7468fSPeter Dunlap } else { 417fcf3ce44SJohn Forte /* 41830e7468fSPeter Dunlap * Some of the data was found to have an incorrect 41930e7468fSPeter Dunlap * error at the protocol error. 420fcf3ce44SJohn Forte */ 42130e7468fSPeter Dunlap pkt->pkt_reason = CMD_PER_FAIL; 42230e7468fSPeter Dunlap pkt->pkt_statistics |= STAT_PERR; 42330e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.bp) { 42430e7468fSPeter Dunlap pkt->pkt_resid = 42530e7468fSPeter Dunlap icmdp->cmd_un.scsi.bp->b_bcount; 426fcf3ce44SJohn Forte } else { 42730e7468fSPeter Dunlap pkt->pkt_resid = 0; 428fcf3ce44SJohn Forte } 429fcf3ce44SJohn Forte } 43030e7468fSPeter Dunlap } 43130e7468fSPeter Dunlap 4322b79d384Sbing zhao - Sun Microsystems - Beijing China static boolean_t 43330e7468fSPeter Dunlap iscsi_cmd_rsp_cmd_status(iscsi_cmd_t *icmdp, iscsi_scsi_rsp_hdr_t *issrhp, 43430e7468fSPeter Dunlap uint8_t *data) 43530e7468fSPeter Dunlap { 4365279807dSJack Meng int32_t dlength = 0; 43730e7468fSPeter Dunlap struct scsi_arq_status *arqstat = NULL; 43830e7468fSPeter Dunlap size_t senselen = 0; 4395279807dSJack Meng int32_t statuslen = 0; 4405279807dSJack Meng int32_t senselen_to = 0; 44130e7468fSPeter Dunlap struct scsi_pkt *pkt; 4422b79d384Sbing zhao - Sun Microsystems - Beijing China boolean_t affect = B_FALSE; 44330e7468fSPeter Dunlap 44430e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 44530e7468fSPeter Dunlap dlength = n2h24(issrhp->dlength); 446fcf3ce44SJohn Forte 447fcf3ce44SJohn Forte /* 44830e7468fSPeter Dunlap * Process iSCSI Cmd Response Status 44930e7468fSPeter Dunlap * RFC 3720 Sectionn 10.4.2. 450fcf3ce44SJohn Forte */ 45130e7468fSPeter Dunlap switch (issrhp->cmd_status & STATUS_MASK) { 45230e7468fSPeter Dunlap case STATUS_GOOD: 45330e7468fSPeter Dunlap /* pass SCSI status up stack */ 45430e7468fSPeter Dunlap if (pkt->pkt_scbp) { 45530e7468fSPeter Dunlap pkt->pkt_scbp[0] = issrhp->cmd_status; 45630e7468fSPeter Dunlap } 45730e7468fSPeter Dunlap break; 45830e7468fSPeter Dunlap case STATUS_CHECK: 45930e7468fSPeter Dunlap /* 46030e7468fSPeter Dunlap * Verify we received a sense buffer and 46130e7468fSPeter Dunlap * that there is the correct amount of 46230e7468fSPeter Dunlap * request sense space to copy it to. 46330e7468fSPeter Dunlap */ 46430e7468fSPeter Dunlap if ((dlength > 1) && 46530e7468fSPeter Dunlap (pkt->pkt_scbp != NULL) && 46630e7468fSPeter Dunlap (icmdp->cmd_un.scsi.statuslen >= 46730e7468fSPeter Dunlap sizeof (struct scsi_arq_status))) { 468fcf3ce44SJohn Forte /* 46930e7468fSPeter Dunlap * If a bad command status is received we 47030e7468fSPeter Dunlap * need to reset the pkt_resid to zero. 47130e7468fSPeter Dunlap * The target driver compares its value 47230e7468fSPeter Dunlap * before checking other error flags. 47330e7468fSPeter Dunlap * (ex. check conditions) 474fcf3ce44SJohn Forte */ 47530e7468fSPeter Dunlap pkt->pkt_resid = 0; 47630e7468fSPeter Dunlap 47730e7468fSPeter Dunlap /* get sense length from first 2 bytes */ 47830e7468fSPeter Dunlap senselen = ((data[0] << 8) | data[1]) & 47930e7468fSPeter Dunlap (size_t)0xFFFF; 48030e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 48130e7468fSPeter Dunlap "DEBUG: iscsi_rx_cmd_rsp_cmd_status status_check: " 48230e7468fSPeter Dunlap "dlen: %d scbp: %p statuslen: %d arq: %d senselen:" 48330e7468fSPeter Dunlap " %lu", dlength, (void *)pkt->pkt_scbp, 48430e7468fSPeter Dunlap icmdp->cmd_un.scsi.statuslen, 48530e7468fSPeter Dunlap (int)sizeof (struct scsi_arq_status), 48630e7468fSPeter Dunlap senselen); 48730e7468fSPeter Dunlap 48830e7468fSPeter Dunlap /* Sanity-check on the sense length */ 48930e7468fSPeter Dunlap if ((senselen + 2) > dlength) { 49030e7468fSPeter Dunlap senselen = dlength - 2; 491fcf3ce44SJohn Forte } 492fcf3ce44SJohn Forte 49330e7468fSPeter Dunlap /* 49430e7468fSPeter Dunlap * If there was a Data Digest error then 49530e7468fSPeter Dunlap * the sense data cannot be trusted. 49630e7468fSPeter Dunlap */ 49730e7468fSPeter Dunlap if (icmdp->cmd_crc_error_seen) { 49830e7468fSPeter Dunlap senselen = 0; 49930e7468fSPeter Dunlap } 500fcf3ce44SJohn Forte 50130e7468fSPeter Dunlap /* automatic request sense */ 50230e7468fSPeter Dunlap arqstat = 50330e7468fSPeter Dunlap (struct scsi_arq_status *)pkt->pkt_scbp; 50430e7468fSPeter Dunlap 50530e7468fSPeter Dunlap /* pass SCSI status up stack */ 50630e7468fSPeter Dunlap *((uchar_t *)&arqstat->sts_status) = 50730e7468fSPeter Dunlap issrhp->cmd_status; 508fcf3ce44SJohn Forte 509fcf3ce44SJohn Forte /* 51030e7468fSPeter Dunlap * Set the status for the automatic 51130e7468fSPeter Dunlap * request sense command 512fcf3ce44SJohn Forte */ 51330e7468fSPeter Dunlap arqstat->sts_rqpkt_state = (STATE_GOT_BUS | 51430e7468fSPeter Dunlap STATE_GOT_TARGET | STATE_SENT_CMD | 51530e7468fSPeter Dunlap STATE_XFERRED_DATA | STATE_GOT_STATUS | 51630e7468fSPeter Dunlap STATE_ARQ_DONE); 517fcf3ce44SJohn Forte 51830e7468fSPeter Dunlap *((uchar_t *)&arqstat->sts_rqpkt_status) = 51930e7468fSPeter Dunlap STATUS_GOOD; 520fcf3ce44SJohn Forte 52130e7468fSPeter Dunlap arqstat->sts_rqpkt_reason = CMD_CMPLT; 52230e7468fSPeter Dunlap statuslen = icmdp->cmd_un.scsi.statuslen; 523fcf3ce44SJohn Forte 52430e7468fSPeter Dunlap if (senselen == 0) { 52530e7468fSPeter Dunlap /* auto request sense failed */ 52630e7468fSPeter Dunlap arqstat->sts_rqpkt_status.sts_chk = 1; 52730e7468fSPeter Dunlap arqstat->sts_rqpkt_resid = statuslen; 52830e7468fSPeter Dunlap } else if (senselen < statuslen) { 52930e7468fSPeter Dunlap /* auto request sense short */ 53030e7468fSPeter Dunlap arqstat->sts_rqpkt_resid = statuslen - senselen; 53130e7468fSPeter Dunlap } else { 53230e7468fSPeter Dunlap /* auto request sense complete */ 53330e7468fSPeter Dunlap arqstat->sts_rqpkt_resid = 0; 53430e7468fSPeter Dunlap } 53530e7468fSPeter Dunlap arqstat->sts_rqpkt_statistics = 0; 53630e7468fSPeter Dunlap pkt->pkt_state |= STATE_ARQ_DONE; 537fcf3ce44SJohn Forte 53830e7468fSPeter Dunlap if (icmdp->cmd_misc_flags & ISCSI_CMD_MISCFLAG_XARQ) { 53930e7468fSPeter Dunlap pkt->pkt_state |= STATE_XARQ_DONE; 54030e7468fSPeter Dunlap } 54130e7468fSPeter Dunlap 5425279807dSJack Meng senselen_to = pkt->pkt_scblen - 5435279807dSJack Meng sizeof (struct scsi_arq_status) + 5445279807dSJack Meng sizeof (struct scsi_extended_sense); 5455279807dSJack Meng 54630e7468fSPeter Dunlap /* copy auto request sense */ 5475279807dSJack Meng dlength = min(senselen, senselen_to); 5485279807dSJack Meng if (dlength > 0) { 54930e7468fSPeter Dunlap bcopy(&data[2], (uchar_t *)&arqstat-> 55030e7468fSPeter Dunlap sts_sensedata, dlength); 5512b79d384Sbing zhao - Sun Microsystems - Beijing China 5522b79d384Sbing zhao - Sun Microsystems - Beijing China affect = iscsi_decode_sense( 5532b79d384Sbing zhao - Sun Microsystems - Beijing China (uint8_t *)&arqstat->sts_sensedata); 55430e7468fSPeter Dunlap } 55530e7468fSPeter Dunlap break; 556fcf3ce44SJohn Forte } 55730e7468fSPeter Dunlap /* FALLTHRU */ 55830e7468fSPeter Dunlap case STATUS_BUSY: 55930e7468fSPeter Dunlap case STATUS_RESERVATION_CONFLICT: 56030e7468fSPeter Dunlap case STATUS_QFULL: 56130e7468fSPeter Dunlap case STATUS_ACA_ACTIVE: 56230e7468fSPeter Dunlap default: 56330e7468fSPeter Dunlap /* 56430e7468fSPeter Dunlap * If a bad command status is received we need to 56530e7468fSPeter Dunlap * reset the pkt_resid to zero. The target driver 56630e7468fSPeter Dunlap * compares its value before checking other error 56730e7468fSPeter Dunlap * flags. (ex. check conditions) 56830e7468fSPeter Dunlap */ 56930e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 57030e7468fSPeter Dunlap "DEBUG: iscsi_rx_cmd_rsp_cmd_status: status: " 57130e7468fSPeter Dunlap "%d cmd_status: %d dlen: %u scbp: %p statuslen: %d " 57230e7468fSPeter Dunlap "arg_len: %d", issrhp->cmd_status & STATUS_MASK, 57330e7468fSPeter Dunlap issrhp->cmd_status, dlength, (void *)pkt->pkt_scbp, 57430e7468fSPeter Dunlap icmdp->cmd_un.scsi.statuslen, 57530e7468fSPeter Dunlap (int)sizeof (struct scsi_arq_status)); 57630e7468fSPeter Dunlap pkt->pkt_resid = 0; 57730e7468fSPeter Dunlap /* pass SCSI status up stack */ 57830e7468fSPeter Dunlap if (pkt->pkt_scbp) { 57930e7468fSPeter Dunlap pkt->pkt_scbp[0] = issrhp->cmd_status; 58030e7468fSPeter Dunlap } 58130e7468fSPeter Dunlap } 5822b79d384Sbing zhao - Sun Microsystems - Beijing China 5832b79d384Sbing zhao - Sun Microsystems - Beijing China return (affect); 58430e7468fSPeter Dunlap } 585fcf3ce44SJohn Forte 58630e7468fSPeter Dunlap /* 58730e7468fSPeter Dunlap * iscsi_rx_process_login_pdup - Process login response PDU. This function 58830e7468fSPeter Dunlap * copies the data into the connection context so that the login code can 58930e7468fSPeter Dunlap * interpret it. 59030e7468fSPeter Dunlap */ 59130e7468fSPeter Dunlap 59230e7468fSPeter Dunlap idm_status_t 59330e7468fSPeter Dunlap iscsi_rx_process_login_pdu(idm_conn_t *ic, idm_pdu_t *pdu) 59430e7468fSPeter Dunlap { 59530e7468fSPeter Dunlap iscsi_conn_t *icp; 59630e7468fSPeter Dunlap 59730e7468fSPeter Dunlap icp = ic->ic_handle; 59830e7468fSPeter Dunlap 59930e7468fSPeter Dunlap /* 60030e7468fSPeter Dunlap * Copy header and data into connection structure so iscsi_login() 60130e7468fSPeter Dunlap * can process it. 60230e7468fSPeter Dunlap */ 60330e7468fSPeter Dunlap mutex_enter(&icp->conn_login_mutex); 60430e7468fSPeter Dunlap /* 60530e7468fSPeter Dunlap * If conn_login_state != LOGIN_TX then we are not ready to handle 60630e7468fSPeter Dunlap * this login response and we should just drop it. 60730e7468fSPeter Dunlap */ 60830e7468fSPeter Dunlap if (icp->conn_login_state == LOGIN_TX) { 60930e7468fSPeter Dunlap icp->conn_login_datalen = pdu->isp_datalen; 61030e7468fSPeter Dunlap bcopy(pdu->isp_hdr, &icp->conn_login_resp_hdr, 61130e7468fSPeter Dunlap sizeof (iscsi_hdr_t)); 61230e7468fSPeter Dunlap /* 61330e7468fSPeter Dunlap * Login code is sloppy with it's NULL handling so make sure 61430e7468fSPeter Dunlap * we don't leave any stale data in there. 61530e7468fSPeter Dunlap */ 61630e7468fSPeter Dunlap bzero(icp->conn_login_data, icp->conn_login_max_data_length); 61730e7468fSPeter Dunlap bcopy(pdu->isp_data, icp->conn_login_data, 61830e7468fSPeter Dunlap MIN(pdu->isp_datalen, icp->conn_login_max_data_length)); 61930e7468fSPeter Dunlap iscsi_login_update_state_locked(icp, LOGIN_RX); 620fcf3ce44SJohn Forte } 62130e7468fSPeter Dunlap mutex_exit(&icp->conn_login_mutex); 622fcf3ce44SJohn Forte 62330e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 624fcf3ce44SJohn Forte } 625fcf3ce44SJohn Forte 626fcf3ce44SJohn Forte /* 627fcf3ce44SJohn Forte * iscsi_rx_process_cmd_rsp - Process received scsi command response. This 628fcf3ce44SJohn Forte * will contain sense data if the command was not successful. This data needs 629fcf3ce44SJohn Forte * to be copied into the scsi_pkt. Otherwise we just complete the IO. 630fcf3ce44SJohn Forte */ 63130e7468fSPeter Dunlap static idm_status_t 63230e7468fSPeter Dunlap iscsi_rx_process_cmd_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 633fcf3ce44SJohn Forte { 63430e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 63530e7468fSPeter Dunlap iscsi_sess_t *isp = icp->conn_sess; 63630e7468fSPeter Dunlap iscsi_scsi_rsp_hdr_t *issrhp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 63730e7468fSPeter Dunlap uint8_t *data = pdu->isp_data; 63830e7468fSPeter Dunlap iscsi_cmd_t *icmdp = NULL; 63930e7468fSPeter Dunlap struct scsi_pkt *pkt = NULL; 64030e7468fSPeter Dunlap idm_status_t rval; 64130e7468fSPeter Dunlap struct buf *bp; 6422b79d384Sbing zhao - Sun Microsystems - Beijing China boolean_t flush = B_FALSE; 6432b79d384Sbing zhao - Sun Microsystems - Beijing China uint32_t cmd_sn = 0; 6442b79d384Sbing zhao - Sun Microsystems - Beijing China uint16_t lun_num = 0; 645fcf3ce44SJohn Forte 646fcf3ce44SJohn Forte /* make sure we get status in order */ 64730e7468fSPeter Dunlap mutex_enter(&icp->conn_queue_active.mutex); 64830e7468fSPeter Dunlap 64930e7468fSPeter Dunlap if ((rval = iscsi_rx_chk(icp, isp, issrhp, 65030e7468fSPeter Dunlap &icmdp)) != IDM_STATUS_SUCCESS) { 65130e7468fSPeter Dunlap if (icmdp != NULL) { 65230e7468fSPeter Dunlap iscsi_task_cleanup(issrhp->opcode, icmdp); 65330e7468fSPeter Dunlap } 65430e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 65530e7468fSPeter Dunlap return (rval); 656fcf3ce44SJohn Forte } 657fcf3ce44SJohn Forte 65830e7468fSPeter Dunlap /* 65930e7468fSPeter Dunlap * If we are in "idm aborting" state then we shouldn't continue 66030e7468fSPeter Dunlap * to process this command. By definition this command is no longer 66130e7468fSPeter Dunlap * on the active queue so we shouldn't try to remove it either. 66230e7468fSPeter Dunlap */ 66330e7468fSPeter Dunlap mutex_enter(&icmdp->cmd_mutex); 66430e7468fSPeter Dunlap if (icmdp->cmd_state == ISCSI_CMD_STATE_IDM_ABORTING) { 66530e7468fSPeter Dunlap mutex_exit(&icmdp->cmd_mutex); 666fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 66730e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 668fcf3ce44SJohn Forte } 66930e7468fSPeter Dunlap mutex_exit(&icmdp->cmd_mutex); 670fcf3ce44SJohn Forte 67130e7468fSPeter Dunlap /* Get the IDM buffer and bytes transferred */ 67230e7468fSPeter Dunlap bp = icmdp->cmd_un.scsi.bp; 67330e7468fSPeter Dunlap if (ic->ic_conn_flags & IDM_CONN_USE_SCOREBOARD) { 67430e7468fSPeter Dunlap /* Transport tracks bytes transferred so use those counts */ 67530e7468fSPeter Dunlap if (bp && (bp->b_flags & B_READ)) { 67630e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred += 67730e7468fSPeter Dunlap icmdp->cmd_itp->idt_rx_bytes; 67830e7468fSPeter Dunlap } else { 67930e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred += 68030e7468fSPeter Dunlap icmdp->cmd_itp->idt_tx_bytes; 68130e7468fSPeter Dunlap } 68230e7468fSPeter Dunlap } else { 68330e7468fSPeter Dunlap /* 68430e7468fSPeter Dunlap * Some transports cannot track the bytes transferred on 68530e7468fSPeter Dunlap * the initiator side (like iSER) so we have to use the 68630e7468fSPeter Dunlap * status info. If the response field indicates that 68730e7468fSPeter Dunlap * the command actually completed then we will assume 68830e7468fSPeter Dunlap * the data_transferred value represents the entire buffer 68930e7468fSPeter Dunlap * unless the resid field says otherwise. This is a bit 69030e7468fSPeter Dunlap * unintuitive but it's really impossible to know what 69130e7468fSPeter Dunlap * has been transferred without detailed consideration 69230e7468fSPeter Dunlap * of the SCSI status and sense key and that is outside 69330e7468fSPeter Dunlap * the scope of the transport. Instead the target/class driver 69430e7468fSPeter Dunlap * can consider these values along with the resid and figure 69530e7468fSPeter Dunlap * it out. The data_transferred concept is just belt and 69630e7468fSPeter Dunlap * suspenders anyway -- RFC 3720 actually explicitly rejects 69730e7468fSPeter Dunlap * scoreboarding ("Initiators SHOULD NOT keep track of the 69830e7468fSPeter Dunlap * data transferred to or from the target (scoreboarding)") 69930e7468fSPeter Dunlap * perhaps for this very reason. 70030e7468fSPeter Dunlap */ 70130e7468fSPeter Dunlap if (issrhp->response != 0) { 70230e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred = 0; 70330e7468fSPeter Dunlap } else { 70430e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred = 70530e7468fSPeter Dunlap (bp == NULL) ? 0 : bp->b_bcount; 70630e7468fSPeter Dunlap if (issrhp->flags & ISCSI_FLAG_CMD_UNDERFLOW) { 70730e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred -= 70830e7468fSPeter Dunlap ntohl(issrhp->residual_count); 70930e7468fSPeter Dunlap } 71030e7468fSPeter Dunlap } 71130e7468fSPeter Dunlap } 712fcf3ce44SJohn Forte 71330e7468fSPeter Dunlap ISCSI_CHECK_SCSI_READ(icmdp, issrhp, 71430e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred, 71530e7468fSPeter Dunlap BP_CHECK_THOROUGH); 71630e7468fSPeter Dunlap 71730e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: rx_process_cmd_rsp: ic: %p pdu: %p itt:" 71830e7468fSPeter Dunlap " %x expcmdsn: %x sess_cmd: %x sess_expcmdsn: %x data_transfered:" 71930e7468fSPeter Dunlap " %lu ibp: %p obp: %p", (void *)ic, (void *)pdu, issrhp->itt, 72030e7468fSPeter Dunlap issrhp->expcmdsn, isp->sess_cmdsn, isp->sess_expcmdsn, 72130e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred, 72230e7468fSPeter Dunlap (void *)icmdp->cmd_un.scsi.ibp_ibuf, 72330e7468fSPeter Dunlap (void *)icmdp->cmd_un.scsi.ibp_obuf); 72430e7468fSPeter Dunlap 72530e7468fSPeter Dunlap iscsi_task_cleanup(issrhp->opcode, icmdp); 726fcf3ce44SJohn Forte 727fcf3ce44SJohn Forte if (issrhp->response) { 728fcf3ce44SJohn Forte /* The target failed the command. */ 72930e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: rx_process_cmd_rsp: ic: %p pdu:" 73030e7468fSPeter Dunlap " %p response: %d bcount: %lu", (void *)ic, (void *)pdu, 73130e7468fSPeter Dunlap issrhp->response, icmdp->cmd_un.scsi.bp->b_bcount); 73230e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 733fcf3ce44SJohn Forte pkt->pkt_reason = CMD_TRAN_ERR; 734fcf3ce44SJohn Forte if (icmdp->cmd_un.scsi.bp) { 735fcf3ce44SJohn Forte pkt->pkt_resid = icmdp->cmd_un.scsi.bp->b_bcount; 736fcf3ce44SJohn Forte } else { 737fcf3ce44SJohn Forte pkt->pkt_resid = 0; 738fcf3ce44SJohn Forte } 739fcf3ce44SJohn Forte } else { 740fcf3ce44SJohn Forte /* success */ 74130e7468fSPeter Dunlap iscsi_cmd_rsp_chk(icmdp, issrhp); 7422b79d384Sbing zhao - Sun Microsystems - Beijing China flush = iscsi_cmd_rsp_cmd_status(icmdp, issrhp, data); 7432b79d384Sbing zhao - Sun Microsystems - Beijing China if (flush == B_TRUE) { 7442b79d384Sbing zhao - Sun Microsystems - Beijing China cmd_sn = icmdp->cmd_sn; 7452b79d384Sbing zhao - Sun Microsystems - Beijing China ASSERT(icmdp->cmd_lun != NULL); 7462b79d384Sbing zhao - Sun Microsystems - Beijing China lun_num = icmdp->cmd_lun->lun_num; 7472b79d384Sbing zhao - Sun Microsystems - Beijing China } 74830e7468fSPeter Dunlap } 749fcf3ce44SJohn Forte 75030e7468fSPeter Dunlap iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E3, isp); 7512b79d384Sbing zhao - Sun Microsystems - Beijing China if (flush == B_TRUE) { 7522b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_flush_cmd_after_reset(cmd_sn, lun_num, icp); 7532b79d384Sbing zhao - Sun Microsystems - Beijing China } 75430e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 75530e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 75630e7468fSPeter Dunlap } 757fcf3ce44SJohn Forte 75830e7468fSPeter Dunlap static void 75930e7468fSPeter Dunlap iscsi_data_rsp_pkt(iscsi_cmd_t *icmdp, iscsi_data_rsp_hdr_t *idrhp) 76030e7468fSPeter Dunlap { 76130e7468fSPeter Dunlap struct buf *bp = NULL; 76230e7468fSPeter Dunlap size_t data_transferred; 76330e7468fSPeter Dunlap struct scsi_pkt *pkt; 764fcf3ce44SJohn Forte 76530e7468fSPeter Dunlap bp = icmdp->cmd_un.scsi.bp; 76630e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 76730e7468fSPeter Dunlap data_transferred = icmdp->cmd_un.scsi.data_transferred; 76830e7468fSPeter Dunlap /* 76930e7468fSPeter Dunlap * The command* must be completed now, since we won't get a command 77030e7468fSPeter Dunlap * response PDU. The cmd_status and residual_count are 77130e7468fSPeter Dunlap * not meaningful unless status_present is set. 77230e7468fSPeter Dunlap */ 77330e7468fSPeter Dunlap pkt->pkt_resid = 0; 77430e7468fSPeter Dunlap /* Check the residual count */ 77530e7468fSPeter Dunlap if (bp && (data_transferred != bp->b_bcount)) { 776fcf3ce44SJohn Forte /* 77730e7468fSPeter Dunlap * We didn't xfer the expected amount of data - 77830e7468fSPeter Dunlap * the residual_count in the header is only valid 77930e7468fSPeter Dunlap * if the underflow flag is set. 780fcf3ce44SJohn Forte */ 78130e7468fSPeter Dunlap if (idrhp->flags & ISCSI_FLAG_DATA_UNDERFLOW) { 78230e7468fSPeter Dunlap pkt->pkt_resid = ntohl(idrhp->residual_count); 78330e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: iscsi_data_rsp_pkt: " 78430e7468fSPeter Dunlap "underflow: itt: %d " 78530e7468fSPeter Dunlap "transferred: %lu count: %lu", idrhp->itt, 78630e7468fSPeter Dunlap data_transferred, bp->b_bcount); 78730e7468fSPeter Dunlap } else { 78830e7468fSPeter Dunlap if (bp->b_bcount > data_transferred) { 78930e7468fSPeter Dunlap /* Some data fell on the floor somehw */ 79030e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: " 79130e7468fSPeter Dunlap "iscsi_data_rsp_pkt: data fell: itt: %d " 79230e7468fSPeter Dunlap "transferred: %lu count: %lu", idrhp->itt, 79330e7468fSPeter Dunlap data_transferred, bp->b_bcount); 79430e7468fSPeter Dunlap pkt->pkt_resid = 79530e7468fSPeter Dunlap bp->b_bcount - data_transferred; 796fcf3ce44SJohn Forte } 79730e7468fSPeter Dunlap } 79830e7468fSPeter Dunlap } 799fcf3ce44SJohn Forte 80030e7468fSPeter Dunlap pkt->pkt_reason = CMD_CMPLT; 80130e7468fSPeter Dunlap pkt->pkt_state |= (STATE_XFERRED_DATA | STATE_GOT_STATUS); 802fcf3ce44SJohn Forte 80330e7468fSPeter Dunlap if (((idrhp->cmd_status & STATUS_MASK) != STATUS_GOOD) && 80430e7468fSPeter Dunlap (icmdp->cmd_un.scsi.statuslen >= 80530e7468fSPeter Dunlap sizeof (struct scsi_arq_status)) && pkt->pkt_scbp) { 806fcf3ce44SJohn Forte 80730e7468fSPeter Dunlap /* 80830e7468fSPeter Dunlap * Not supposed to get exception status here! 80930e7468fSPeter Dunlap * We have no request sense data so just do the 81030e7468fSPeter Dunlap * best we can 81130e7468fSPeter Dunlap */ 81230e7468fSPeter Dunlap struct scsi_arq_status *arqstat = 81330e7468fSPeter Dunlap (struct scsi_arq_status *)pkt->pkt_scbp; 814fcf3ce44SJohn Forte 815fcf3ce44SJohn Forte 81630e7468fSPeter Dunlap bzero(arqstat, sizeof (struct scsi_arq_status)); 817fcf3ce44SJohn Forte 81830e7468fSPeter Dunlap *((uchar_t *)&arqstat->sts_status) = 81930e7468fSPeter Dunlap idrhp->cmd_status; 820fcf3ce44SJohn Forte 82130e7468fSPeter Dunlap arqstat->sts_rqpkt_resid = 82230e7468fSPeter Dunlap sizeof (struct scsi_extended_sense); 82330e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: iscsi_data_rsp_pkt: " 82430e7468fSPeter Dunlap "exception status: itt: %d resid: %d", 82530e7468fSPeter Dunlap idrhp->itt, arqstat->sts_rqpkt_resid); 826b4243054SSheng-Liang Eric Zhang 82730e7468fSPeter Dunlap } else if (pkt->pkt_scbp) { 82830e7468fSPeter Dunlap /* just pass along the status we got */ 82930e7468fSPeter Dunlap pkt->pkt_scbp[0] = idrhp->cmd_status; 830fcf3ce44SJohn Forte } 831fcf3ce44SJohn Forte } 832fcf3ce44SJohn Forte 833fcf3ce44SJohn Forte /* 83430e7468fSPeter Dunlap * iscsi_rx_process_data_rsp - 83530e7468fSPeter Dunlap * This currently processes the final data sequence denoted by the data response 83630e7468fSPeter Dunlap * PDU Status bit being set. We will not receive the SCSI response. 83730e7468fSPeter Dunlap * This bit denotes that the PDU is the successful completion of the 83830e7468fSPeter Dunlap * command. 839fcf3ce44SJohn Forte */ 84030e7468fSPeter Dunlap static idm_status_t 84130e7468fSPeter Dunlap iscsi_rx_process_data_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 842fcf3ce44SJohn Forte { 84330e7468fSPeter Dunlap iscsi_sess_t *isp = NULL; 84430e7468fSPeter Dunlap iscsi_data_rsp_hdr_t *idrhp = (iscsi_data_rsp_hdr_t *)pdu->isp_hdr; 84530e7468fSPeter Dunlap iscsi_cmd_t *icmdp = NULL; 84630e7468fSPeter Dunlap struct buf *bp = NULL; 84730e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 84830e7468fSPeter Dunlap idm_buf_t *ibp; 84930e7468fSPeter Dunlap idm_status_t rval; 850fcf3ce44SJohn Forte 851fcf3ce44SJohn Forte 85230e7468fSPeter Dunlap /* should only call this when the data rsp contains final rsp */ 85330e7468fSPeter Dunlap ASSERT(idrhp->flags & ISCSI_FLAG_DATA_STATUS); 85430e7468fSPeter Dunlap isp = icp->conn_sess; 85530e7468fSPeter Dunlap 856fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 85730e7468fSPeter Dunlap if ((rval = iscsi_rx_chk(icp, isp, (iscsi_scsi_rsp_hdr_t *)idrhp, 85830e7468fSPeter Dunlap &icmdp)) != IDM_STATUS_SUCCESS) { 85930e7468fSPeter Dunlap if (icmdp != NULL) { 86030e7468fSPeter Dunlap iscsi_task_cleanup(idrhp->opcode, icmdp); 86130e7468fSPeter Dunlap } 862fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 86330e7468fSPeter Dunlap return (rval); 864fcf3ce44SJohn Forte } 865fcf3ce44SJohn Forte 86630e7468fSPeter Dunlap /* 86730e7468fSPeter Dunlap * If we are in "idm aborting" state then we shouldn't continue 86830e7468fSPeter Dunlap * to process this command. By definition this command is no longer 86930e7468fSPeter Dunlap * on the active queue so we shouldn't try to remove it either. 87030e7468fSPeter Dunlap */ 871fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 87230e7468fSPeter Dunlap if (icmdp->cmd_state == ISCSI_CMD_STATE_IDM_ABORTING) { 87330e7468fSPeter Dunlap mutex_exit(&icmdp->cmd_mutex); 87430e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 87530e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 87630e7468fSPeter Dunlap } 87730e7468fSPeter Dunlap mutex_exit(&icmdp->cmd_mutex); 87830e7468fSPeter Dunlap 87930e7468fSPeter Dunlap /* 88030e7468fSPeter Dunlap * Holding the pending/active queue locks across the 88130e7468fSPeter Dunlap * iscsi_rx_data call later in this function may cause 88230e7468fSPeter Dunlap * deadlock during fault injections. Instead remove 88330e7468fSPeter Dunlap * the cmd from the active queue and release the locks. 88430e7468fSPeter Dunlap * Then before returning or completing the command 88530e7468fSPeter Dunlap * return the cmd to the active queue and reacquire 88630e7468fSPeter Dunlap * the locks. 88730e7468fSPeter Dunlap */ 88830e7468fSPeter Dunlap iscsi_dequeue_active_cmd(icp, icmdp); 88930e7468fSPeter Dunlap 89030e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 891fcf3ce44SJohn Forte 89230e7468fSPeter Dunlap /* shorthand some values */ 893fcf3ce44SJohn Forte bp = icmdp->cmd_un.scsi.bp; 894fcf3ce44SJohn Forte 89530e7468fSPeter Dunlap /* 89630e7468fSPeter Dunlap * some poorly behaved targets have been observed 89730e7468fSPeter Dunlap * sending data-in pdu's during a write operation 89830e7468fSPeter Dunlap */ 89930e7468fSPeter Dunlap if (bp != NULL) { 90030e7468fSPeter Dunlap if (!(bp->b_flags & B_READ)) { 90130e7468fSPeter Dunlap cmn_err(CE_WARN, 90230e7468fSPeter Dunlap "iscsi connection(%u) protocol error - " 90330e7468fSPeter Dunlap "received data response during write operation " 90430e7468fSPeter Dunlap "itt:0x%x", 90530e7468fSPeter Dunlap icp->conn_oid, idrhp->itt); 90630e7468fSPeter Dunlap mutex_enter(&icp->conn_queue_active.mutex); 90730e7468fSPeter Dunlap iscsi_enqueue_active_cmd(icp, icmdp); 90830e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 90930e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 91030e7468fSPeter Dunlap } 91130e7468fSPeter Dunlap } 91230e7468fSPeter Dunlap 91330e7468fSPeter Dunlap ibp = icmdp->cmd_un.scsi.ibp_ibuf; 91430e7468fSPeter Dunlap if (ibp == NULL) { 91530e7468fSPeter Dunlap /* 91630e7468fSPeter Dunlap * After the check of bp above we *should* have a corresponding 91730e7468fSPeter Dunlap * idm_buf_t (ibp). It's possible that the original call 91830e7468fSPeter Dunlap * to idm_buf_alloc failed due to a pending connection state 91930e7468fSPeter Dunlap * transition in which case this value can be NULL. It's 92030e7468fSPeter Dunlap * highly unlikely that the connection would be shutting down 92130e7468fSPeter Dunlap * *and* we manage to process a data response and get to this 92230e7468fSPeter Dunlap * point in the code but just in case we should check for it. 92330e7468fSPeter Dunlap * This isn't really a protocol error -- we are almost certainly 92430e7468fSPeter Dunlap * closing the connection anyway so just return a generic error. 92530e7468fSPeter Dunlap */ 92630e7468fSPeter Dunlap mutex_enter(&icp->conn_queue_active.mutex); 92730e7468fSPeter Dunlap iscsi_enqueue_active_cmd(icp, icmdp); 92830e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 92930e7468fSPeter Dunlap return (IDM_STATUS_FAIL); 93030e7468fSPeter Dunlap } 93130e7468fSPeter Dunlap 93230e7468fSPeter Dunlap if (ic->ic_conn_flags & IDM_CONN_USE_SCOREBOARD) { 93330e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred = 93430e7468fSPeter Dunlap icmdp->cmd_itp->idt_rx_bytes; 935fcf3ce44SJohn Forte } else { 93630e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred = bp->b_bcount; 93730e7468fSPeter Dunlap if (idrhp->flags & ISCSI_FLAG_CMD_UNDERFLOW) { 93830e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred -= 93930e7468fSPeter Dunlap ntohl(idrhp->residual_count); 94030e7468fSPeter Dunlap } 941fcf3ce44SJohn Forte } 942fcf3ce44SJohn Forte 94330e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: rx_process_data_rsp: icp: %p pdu: %p " 94430e7468fSPeter Dunlap "itt: %d ibp: %p icmdp: %p xfer_len: %lu transferred: %lu dlen: %u", 94530e7468fSPeter Dunlap (void *)icp, (void *)pdu, idrhp->itt, (void *)bp, (void *)icmdp, 94630e7468fSPeter Dunlap (ibp == NULL) ? 0 : ibp->idb_xfer_len, 94730e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred, 94830e7468fSPeter Dunlap n2h24(idrhp->dlength)); 94930e7468fSPeter Dunlap 95030e7468fSPeter Dunlap iscsi_task_cleanup(idrhp->opcode, icmdp); 95130e7468fSPeter Dunlap 95230e7468fSPeter Dunlap iscsi_data_rsp_pkt(icmdp, idrhp); 95330e7468fSPeter Dunlap 95430e7468fSPeter Dunlap mutex_enter(&icp->conn_queue_active.mutex); 95530e7468fSPeter Dunlap iscsi_enqueue_active_cmd(icp, icmdp); 95630e7468fSPeter Dunlap iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E3, isp); 957fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 958fcf3ce44SJohn Forte 95930e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 960fcf3ce44SJohn Forte } 961fcf3ce44SJohn Forte 962fcf3ce44SJohn Forte /* 963fcf3ce44SJohn Forte * iscsi_rx_process_nop - Process a received nop. If nop is in response 964fcf3ce44SJohn Forte * to a ping we sent update stats. If initiated by the target we need 965fcf3ce44SJohn Forte * to response back to the target with a nop. Schedule the response. 966fcf3ce44SJohn Forte */ 967fcf3ce44SJohn Forte /* ARGSUSED */ 96830e7468fSPeter Dunlap static idm_status_t 96930e7468fSPeter Dunlap iscsi_rx_process_nop(idm_conn_t *ic, idm_pdu_t *pdu) 970fcf3ce44SJohn Forte { 971fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 97230e7468fSPeter Dunlap iscsi_nop_in_hdr_t *inihp = (iscsi_nop_in_hdr_t *)pdu->isp_hdr; 973fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 97430e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 975fcf3ce44SJohn Forte 976fcf3ce44SJohn Forte if (icp->conn_expstatsn != ntohl(inihp->statsn)) { 97730e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi connection(%u/%x) protocol error - " 978fcf3ce44SJohn Forte "received status out of order itt:0x%x statsn:0x%x " 97930e7468fSPeter Dunlap "expstatsn:0x%x", icp->conn_oid, inihp->opcode, inihp->itt, 980fcf3ce44SJohn Forte ntohl(inihp->statsn), icp->conn_expstatsn); 98130e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 982fcf3ce44SJohn Forte } 98330e7468fSPeter Dunlap isp = icp->conn_sess; 98430e7468fSPeter Dunlap ASSERT(isp != NULL); 985fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 986fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 987fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 988fcf3ce44SJohn Forte if (inihp->itt != ISCSI_RSVD_TASK_TAG) { 989fcf3ce44SJohn Forte if (!ISCSI_SUCCESS(iscsi_rx_process_itt_to_icmdp( 99030e7468fSPeter Dunlap isp, (iscsi_hdr_t *)inihp, &icmdp))) { 99130e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi connection(%u) protocol error " 99230e7468fSPeter Dunlap "- can not find cmd for itt:0x%x", 99330e7468fSPeter Dunlap icp->conn_oid, inihp->itt); 994fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 995fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 996fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 99730e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 998fcf3ce44SJohn Forte } 999fcf3ce44SJohn Forte } 1000fcf3ce44SJohn Forte 1001fcf3ce44SJohn Forte /* update expcmdsn and maxcmdsn */ 1002fcf3ce44SJohn Forte iscsi_update_flow_control(isp, ntohl(inihp->maxcmdsn), 1003fcf3ce44SJohn Forte ntohl(inihp->expcmdsn)); 1004fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1005fcf3ce44SJohn Forte 1006fcf3ce44SJohn Forte if ((inihp->itt != ISCSI_RSVD_TASK_TAG) && 1007fcf3ce44SJohn Forte (inihp->ttt == ISCSI_RSVD_TASK_TAG)) { 1008fcf3ce44SJohn Forte /* This is the only type of nop that incs. the expstatsn */ 1009fcf3ce44SJohn Forte icp->conn_expstatsn++; 1010fcf3ce44SJohn Forte 1011fcf3ce44SJohn Forte /* 1012fcf3ce44SJohn Forte * This is a targets response to our nop 1013fcf3ce44SJohn Forte */ 1014fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E3, isp); 1015fcf3ce44SJohn Forte } else if (inihp->ttt != ISCSI_RSVD_TASK_TAG) { 1016fcf3ce44SJohn Forte /* 1017fcf3ce44SJohn Forte * Target requested a nop. Send one. 1018fcf3ce44SJohn Forte */ 1019fcf3ce44SJohn Forte iscsi_handle_nop(icp, ISCSI_RSVD_TASK_TAG, inihp->ttt); 1020fcf3ce44SJohn Forte } else { 1021fcf3ce44SJohn Forte /* 1022fcf3ce44SJohn Forte * This is a target-initiated ping that doesn't expect 1023fcf3ce44SJohn Forte * a response; nothing to do except update our flow control 1024fcf3ce44SJohn Forte * (which we do in all cases above). 1025fcf3ce44SJohn Forte */ 1026fcf3ce44SJohn Forte /* EMPTY */ 1027fcf3ce44SJohn Forte } 1028fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 1029fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 1030fcf3ce44SJohn Forte 103130e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 1032fcf3ce44SJohn Forte } 1033fcf3ce44SJohn Forte 1034fcf3ce44SJohn Forte 1035fcf3ce44SJohn Forte /* 1036fcf3ce44SJohn Forte * iscsi_rx_process_reject_rsp - The server rejected a PDU 1037fcf3ce44SJohn Forte */ 103830e7468fSPeter Dunlap static idm_status_t 103930e7468fSPeter Dunlap iscsi_rx_process_reject_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 1040fcf3ce44SJohn Forte { 104130e7468fSPeter Dunlap iscsi_reject_rsp_hdr_t *irrhp = (iscsi_reject_rsp_hdr_t *)pdu->isp_hdr; 104230e7468fSPeter Dunlap iscsi_sess_t *isp = NULL; 104330e7468fSPeter Dunlap uint32_t dlength = 0; 104430e7468fSPeter Dunlap iscsi_hdr_t *old_ihp = NULL; 104530e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 104630e7468fSPeter Dunlap uint8_t *data = pdu->isp_data; 1047*aefdd131Sbing zhao - Sun Microsystems - Beijing China idm_status_t status = IDM_STATUS_SUCCESS; 1048*aefdd131Sbing zhao - Sun Microsystems - Beijing China int i = 0; 1049fcf3ce44SJohn Forte 1050fcf3ce44SJohn Forte ASSERT(data != NULL); 105130e7468fSPeter Dunlap isp = icp->conn_sess; 105230e7468fSPeter Dunlap ASSERT(isp != NULL); 1053fcf3ce44SJohn Forte 1054*aefdd131Sbing zhao - Sun Microsystems - Beijing China /* 1055*aefdd131Sbing zhao - Sun Microsystems - Beijing China * In RFC3720 section 10.17, this 4 bytes should be all 0xff. 1056*aefdd131Sbing zhao - Sun Microsystems - Beijing China */ 1057*aefdd131Sbing zhao - Sun Microsystems - Beijing China for (i = 0; i < 4; i++) { 1058*aefdd131Sbing zhao - Sun Microsystems - Beijing China if (irrhp->must_be_ff[i] != 0xff) { 1059*aefdd131Sbing zhao - Sun Microsystems - Beijing China return (IDM_STATUS_PROTOCOL_ERROR); 1060*aefdd131Sbing zhao - Sun Microsystems - Beijing China } 1061*aefdd131Sbing zhao - Sun Microsystems - Beijing China } 1062*aefdd131Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&isp->sess_cmdsn_mutex); 1063*aefdd131Sbing zhao - Sun Microsystems - Beijing China 1064*aefdd131Sbing zhao - Sun Microsystems - Beijing China if (icp->conn_expstatsn == ntohl(irrhp->statsn)) { 1065*aefdd131Sbing zhao - Sun Microsystems - Beijing China icp->conn_expstatsn++; 1066*aefdd131Sbing zhao - Sun Microsystems - Beijing China } else { 1067*aefdd131Sbing zhao - Sun Microsystems - Beijing China cmn_err(CE_WARN, "iscsi connection(%u/%x) protocol error - " 1068*aefdd131Sbing zhao - Sun Microsystems - Beijing China "received status out of order statsn:0x%x " 1069*aefdd131Sbing zhao - Sun Microsystems - Beijing China "expstatsn:0x%x", icp->conn_oid, irrhp->opcode, 1070*aefdd131Sbing zhao - Sun Microsystems - Beijing China ntohl(irrhp->statsn), icp->conn_expstatsn); 1071*aefdd131Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_cmdsn_mutex); 1072*aefdd131Sbing zhao - Sun Microsystems - Beijing China return (IDM_STATUS_PROTOCOL_ERROR); 1073fcf3ce44SJohn Forte } 1074*aefdd131Sbing zhao - Sun Microsystems - Beijing China /* update expcmdsn and maxcmdsn */ 1075*aefdd131Sbing zhao - Sun Microsystems - Beijing China iscsi_update_flow_control(isp, ntohl(irrhp->maxcmdsn), 1076*aefdd131Sbing zhao - Sun Microsystems - Beijing China ntohl(irrhp->expcmdsn)); 1077*aefdd131Sbing zhao - Sun Microsystems - Beijing China 1078*aefdd131Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_cmdsn_mutex); 1079fcf3ce44SJohn Forte 1080fcf3ce44SJohn Forte /* If we don't have the rejected header we can't do anything */ 1081fcf3ce44SJohn Forte dlength = n2h24(irrhp->dlength); 1082fcf3ce44SJohn Forte if (dlength < sizeof (iscsi_hdr_t)) { 108330e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1084fcf3ce44SJohn Forte } 1085fcf3ce44SJohn Forte 1086fcf3ce44SJohn Forte /* map old ihp */ 1087fcf3ce44SJohn Forte old_ihp = (iscsi_hdr_t *)data; 1088fcf3ce44SJohn Forte 1089fcf3ce44SJohn Forte switch (irrhp->reason) { 1090fcf3ce44SJohn Forte /* 1091fcf3ce44SJohn Forte * ISCSI_REJECT_IMM_CMD_REJECT - Immediate Command Reject 1092fcf3ce44SJohn Forte * too many immediate commands (original cmd can be resent) 1093fcf3ce44SJohn Forte */ 1094fcf3ce44SJohn Forte case ISCSI_REJECT_IMM_CMD_REJECT: 1095fcf3ce44SJohn Forte /* 1096fcf3ce44SJohn Forte * We have exceeded the server's capacity for outstanding 1097fcf3ce44SJohn Forte * immediate commands. This must be a task management 1098fcf3ce44SJohn Forte * command so try to find it in the abortingqueue and 1099fcf3ce44SJohn Forte * complete it. 1100fcf3ce44SJohn Forte */ 1101fcf3ce44SJohn Forte if (!(old_ihp->opcode & ISCSI_OP_IMMEDIATE)) { 1102fcf3ce44SJohn Forte /* Rejecting IMM but old old_hdr wasn't IMM */ 110330e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1104fcf3ce44SJohn Forte } 1105fcf3ce44SJohn Forte 1106fcf3ce44SJohn Forte /* 1107fcf3ce44SJohn Forte * We only send NOP and TASK_MGT as IMM. All other 1108fcf3ce44SJohn Forte * cases should be considered as a protocol error. 1109fcf3ce44SJohn Forte */ 1110fcf3ce44SJohn Forte switch (old_ihp->opcode & ISCSI_OPCODE_MASK) { 1111fcf3ce44SJohn Forte case ISCSI_OP_NOOP_OUT: 1112fcf3ce44SJohn Forte /* 1113fcf3ce44SJohn Forte * A ping was rejected - treat this like 1114fcf3ce44SJohn Forte * ping response. The down side is we 1115fcf3ce44SJohn Forte * didn't get an updated MaxCmdSn. 1116fcf3ce44SJohn Forte */ 1117fcf3ce44SJohn Forte break; 1118fcf3ce44SJohn Forte case ISCSI_OP_SCSI_TASK_MGT_MSG: 1119*aefdd131Sbing zhao - Sun Microsystems - Beijing China status = 1120*aefdd131Sbing zhao - Sun Microsystems - Beijing China iscsi_rx_process_rejected_tsk_mgt(ic, old_ihp); 1121fcf3ce44SJohn Forte break; 1122fcf3ce44SJohn Forte default: 1123fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol error " 1124fcf3ce44SJohn Forte "- received a reject for a command(0x%02x) not " 1125fcf3ce44SJohn Forte "sent as an immediate", icp->conn_oid, 1126fcf3ce44SJohn Forte old_ihp->opcode); 112730e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 112830e7468fSPeter Dunlap break; 1129fcf3ce44SJohn Forte } 1130fcf3ce44SJohn Forte break; 1131fcf3ce44SJohn Forte 1132fcf3ce44SJohn Forte /* 1133fcf3ce44SJohn Forte * For the rest of the reject cases just use the general 1134fcf3ce44SJohn Forte * hammer of dis/reconnecting. This will resolve all 1135fcf3ce44SJohn Forte * noted issues although could be more graceful. 1136fcf3ce44SJohn Forte */ 1137fcf3ce44SJohn Forte case ISCSI_REJECT_DATA_DIGEST_ERROR: 1138fcf3ce44SJohn Forte case ISCSI_REJECT_CMD_BEFORE_LOGIN: 1139fcf3ce44SJohn Forte case ISCSI_REJECT_SNACK_REJECT: 1140fcf3ce44SJohn Forte case ISCSI_REJECT_PROTOCOL_ERROR: 1141fcf3ce44SJohn Forte case ISCSI_REJECT_CMD_NOT_SUPPORTED: 1142fcf3ce44SJohn Forte case ISCSI_REJECT_TASK_IN_PROGRESS: 1143fcf3ce44SJohn Forte case ISCSI_REJECT_INVALID_DATA_ACK: 1144fcf3ce44SJohn Forte case ISCSI_REJECT_INVALID_PDU_FIELD: 1145fcf3ce44SJohn Forte case ISCSI_REJECT_LONG_OPERATION_REJECT: 1146fcf3ce44SJohn Forte case ISCSI_REJECT_NEGOTIATION_RESET: 1147fcf3ce44SJohn Forte default: 1148*aefdd131Sbing zhao - Sun Microsystems - Beijing China cmn_err(CE_WARN, "iscsi connection(%u/%x) closing connection - " 1149*aefdd131Sbing zhao - Sun Microsystems - Beijing China "target requested reason:0x%x", 1150*aefdd131Sbing zhao - Sun Microsystems - Beijing China icp->conn_oid, irrhp->opcode, irrhp->reason); 115130e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 115230e7468fSPeter Dunlap break; 1153fcf3ce44SJohn Forte } 1154fcf3ce44SJohn Forte 1155*aefdd131Sbing zhao - Sun Microsystems - Beijing China return (status); 1156fcf3ce44SJohn Forte } 1157fcf3ce44SJohn Forte 1158fcf3ce44SJohn Forte 1159fcf3ce44SJohn Forte /* 1160fcf3ce44SJohn Forte * iscsi_rx_process_rejected_tsk_mgt - 1161fcf3ce44SJohn Forte */ 116230e7468fSPeter Dunlap /* ARGSUSED */ 116330e7468fSPeter Dunlap static idm_status_t 116430e7468fSPeter Dunlap iscsi_rx_process_rejected_tsk_mgt(idm_conn_t *ic, iscsi_hdr_t *old_ihp) 1165fcf3ce44SJohn Forte { 116630e7468fSPeter Dunlap iscsi_sess_t *isp = NULL; 116730e7468fSPeter Dunlap iscsi_cmd_t *icmdp = NULL; 116830e7468fSPeter Dunlap iscsi_conn_t *icp = NULL; 1169fcf3ce44SJohn Forte 1170fcf3ce44SJohn Forte isp = icp->conn_sess; 1171fcf3ce44SJohn Forte ASSERT(old_ihp != NULL); 117230e7468fSPeter Dunlap ASSERT(isp != NULL); 1173fcf3ce44SJohn Forte 1174fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 1175fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 1176fcf3ce44SJohn Forte if (!ISCSI_SUCCESS(iscsi_rx_process_itt_to_icmdp( 1177fcf3ce44SJohn Forte isp, old_ihp, &icmdp))) { 1178fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1179fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 118030e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1181fcf3ce44SJohn Forte } 1182fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1183fcf3ce44SJohn Forte 1184fcf3ce44SJohn Forte switch (icmdp->cmd_type) { 1185fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_ABORT: 1186fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_RESET: 1187fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E4, 1188fcf3ce44SJohn Forte icp->conn_sess); 1189fcf3ce44SJohn Forte break; 1190fcf3ce44SJohn Forte /* We don't send any other task mgr types */ 1191fcf3ce44SJohn Forte default: 1192fcf3ce44SJohn Forte ASSERT(B_FALSE); 1193fcf3ce44SJohn Forte break; 1194fcf3ce44SJohn Forte } 1195fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 1196fcf3ce44SJohn Forte 119730e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 1198fcf3ce44SJohn Forte } 1199fcf3ce44SJohn Forte 1200fcf3ce44SJohn Forte 1201fcf3ce44SJohn Forte /* 1202fcf3ce44SJohn Forte * iscsi_rx_process_task_mgt_rsp - 1203fcf3ce44SJohn Forte */ 1204fcf3ce44SJohn Forte /* ARGSUSED */ 120530e7468fSPeter Dunlap static idm_status_t 120630e7468fSPeter Dunlap iscsi_rx_process_task_mgt_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 1207fcf3ce44SJohn Forte { 1208fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 1209fcf3ce44SJohn Forte iscsi_scsi_task_mgt_rsp_hdr_t *istmrhp = NULL; 1210fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 121130e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 121230e7468fSPeter Dunlap idm_status_t status = IDM_STATUS_SUCCESS; 1213fcf3ce44SJohn Forte 1214fcf3ce44SJohn Forte isp = icp->conn_sess; 121530e7468fSPeter Dunlap istmrhp = (iscsi_scsi_task_mgt_rsp_hdr_t *)pdu->isp_hdr; 1216fcf3ce44SJohn Forte 1217fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 121830e7468fSPeter Dunlap if ((status = iscsi_rx_chk(icp, isp, (iscsi_scsi_rsp_hdr_t *)istmrhp, 121930e7468fSPeter Dunlap &icmdp)) != IDM_STATUS_SUCCESS) { 1220fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 122130e7468fSPeter Dunlap return (status); 1222fcf3ce44SJohn Forte } 1223fcf3ce44SJohn Forte 1224fcf3ce44SJohn Forte switch (icmdp->cmd_type) { 1225fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_ABORT: 1226fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_RESET: 1227fcf3ce44SJohn Forte switch (istmrhp->response) { 1228fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_COMPLETE: 1229fcf3ce44SJohn Forte /* success */ 1230fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, 1231fcf3ce44SJohn Forte ISCSI_CMD_EVENT_E3, isp); 1232fcf3ce44SJohn Forte break; 1233fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_NO_TASK: 1234fcf3ce44SJohn Forte /* 1235fcf3ce44SJohn Forte * If the array no longer knows about 1236fcf3ce44SJohn Forte * an ABORT RTT and we no longer have 1237fcf3ce44SJohn Forte * a parent SCSI command it was just 1238fcf3ce44SJohn Forte * completed, free this ABORT resource. 1239fcf3ce44SJohn Forte * Otherwise FALLTHRU this will flag a 1240fcf3ce44SJohn Forte * protocol problem. 1241fcf3ce44SJohn Forte */ 1242fcf3ce44SJohn Forte if ((icmdp->cmd_type == ISCSI_CMD_TYPE_ABORT) && 1243fcf3ce44SJohn Forte (icmdp->cmd_un.abort.icmdp == NULL)) { 1244fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, 1245fcf3ce44SJohn Forte ISCSI_CMD_EVENT_E4, isp); 1246fcf3ce44SJohn Forte break; 1247fcf3ce44SJohn Forte } 1248fcf3ce44SJohn Forte /* FALLTHRU */ 12492b79d384Sbing zhao - Sun Microsystems - Beijing China case SCSI_TCP_TM_RESP_REJECTED: 12502b79d384Sbing zhao - Sun Microsystems - Beijing China /* 12512b79d384Sbing zhao - Sun Microsystems - Beijing China * If the target rejects our reset task, 12522b79d384Sbing zhao - Sun Microsystems - Beijing China * we should record the response and complete 12532b79d384Sbing zhao - Sun Microsystems - Beijing China * this command with the result. 12542b79d384Sbing zhao - Sun Microsystems - Beijing China */ 12552b79d384Sbing zhao - Sun Microsystems - Beijing China if (icmdp->cmd_type == ISCSI_CMD_TYPE_RESET) { 12562b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_un.reset.response = 12572b79d384Sbing zhao - Sun Microsystems - Beijing China istmrhp->response; 12582b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_state_machine(icmdp, 12592b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_EVENT_E3, isp); 12602b79d384Sbing zhao - Sun Microsystems - Beijing China break; 12612b79d384Sbing zhao - Sun Microsystems - Beijing China } 12622b79d384Sbing zhao - Sun Microsystems - Beijing China /* FALLTHRU */ 1263fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_NO_LUN: 1264fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_TASK_ALLEGIANT: 1265fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_NO_FAILOVER: 1266fcf3ce44SJohn Forte case SCSI_TCP_TM_RESP_IN_PRGRESS: 1267fcf3ce44SJohn Forte default: 1268fcf3ce44SJohn Forte /* 1269fcf3ce44SJohn Forte * Something is out of sync. Flush 1270fcf3ce44SJohn Forte * active queues and resync the 1271fcf3ce44SJohn Forte * the connection to try and recover 1272fcf3ce44SJohn Forte * to a known state. 1273fcf3ce44SJohn Forte */ 127430e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 1275fcf3ce44SJohn Forte } 1276fcf3ce44SJohn Forte break; 1277fcf3ce44SJohn Forte 1278fcf3ce44SJohn Forte default: 1279fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol error - " 1280fcf3ce44SJohn Forte "received a task mgt response for a non-task mgt " 1281fcf3ce44SJohn Forte "cmd itt:0x%x type:%d", icp->conn_oid, istmrhp->itt, 1282fcf3ce44SJohn Forte icmdp->cmd_type); 128330e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 128430e7468fSPeter Dunlap break; 1285fcf3ce44SJohn Forte } 1286fcf3ce44SJohn Forte 1287fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 128830e7468fSPeter Dunlap return (status); 1289fcf3ce44SJohn Forte } 1290fcf3ce44SJohn Forte 1291fcf3ce44SJohn Forte 1292fcf3ce44SJohn Forte /* 129330e7468fSPeter Dunlap * iscsi_rx_process_logout_rsp - 1294fcf3ce44SJohn Forte * 1295fcf3ce44SJohn Forte */ 1296fcf3ce44SJohn Forte /* ARGSUSED */ 129730e7468fSPeter Dunlap idm_status_t 129830e7468fSPeter Dunlap iscsi_rx_process_logout_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 1299fcf3ce44SJohn Forte { 130030e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 130130e7468fSPeter Dunlap iscsi_logout_rsp_hdr_t *ilrhp = 130230e7468fSPeter Dunlap (iscsi_logout_rsp_hdr_t *)pdu->isp_hdr; 1303fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 130430e7468fSPeter Dunlap iscsi_sess_t *isp; 130530e7468fSPeter Dunlap idm_status_t status = IDM_STATUS_SUCCESS; 1306fcf3ce44SJohn Forte 1307fcf3ce44SJohn Forte isp = icp->conn_sess; 1308fcf3ce44SJohn Forte 1309fcf3ce44SJohn Forte if (icp->conn_expstatsn != ntohl(ilrhp->statsn)) { 131030e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi connection(%u/%x) protocol error - " 1311fcf3ce44SJohn Forte "received status out of order itt:0x%x statsn:0x%x " 131230e7468fSPeter Dunlap "expstatsn:0x%x", icp->conn_oid, ilrhp->opcode, ilrhp->itt, 1313fcf3ce44SJohn Forte ntohl(ilrhp->statsn), icp->conn_expstatsn); 131430e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1315fcf3ce44SJohn Forte } 1316fcf3ce44SJohn Forte 1317fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 1318fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 1319fcf3ce44SJohn Forte if (ilrhp->itt != ISCSI_RSVD_TASK_TAG) { 1320fcf3ce44SJohn Forte if (!ISCSI_SUCCESS(iscsi_rx_process_itt_to_icmdp( 132130e7468fSPeter Dunlap isp, (iscsi_hdr_t *)ilrhp, &icmdp))) { 1322fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1323fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 132430e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1325fcf3ce44SJohn Forte } 1326fcf3ce44SJohn Forte } 1327fcf3ce44SJohn Forte 1328fcf3ce44SJohn Forte /* update expcmdsn and maxcmdsn */ 1329fcf3ce44SJohn Forte iscsi_update_flow_control(isp, ntohl(ilrhp->maxcmdsn), 1330fcf3ce44SJohn Forte ntohl(ilrhp->expcmdsn)); 1331fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1332fcf3ce44SJohn Forte 133330e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 133430e7468fSPeter Dunlap "DEBUG: iscsi_rx_process_logout_rsp: response: %d", 133530e7468fSPeter Dunlap ilrhp->response); 1336fcf3ce44SJohn Forte switch (ilrhp->response) { 1337fcf3ce44SJohn Forte case ISCSI_LOGOUT_CID_NOT_FOUND: 1338fcf3ce44SJohn Forte /* 1339fcf3ce44SJohn Forte * If the target doesn't know about our connection 1340fcf3ce44SJohn Forte * then we can consider our self disconnected. 1341fcf3ce44SJohn Forte */ 1342fcf3ce44SJohn Forte /* FALLTHRU */ 1343fcf3ce44SJohn Forte case ISCSI_LOGOUT_RECOVERY_UNSUPPORTED: 1344fcf3ce44SJohn Forte /* 1345fcf3ce44SJohn Forte * We don't support ErrorRecovery levels above 0 1346fcf3ce44SJohn Forte * currently so consider this success. 1347fcf3ce44SJohn Forte */ 1348fcf3ce44SJohn Forte /* FALLTHRU */ 1349fcf3ce44SJohn Forte case ISCSI_LOGOUT_CLEANUP_FAILED: 1350fcf3ce44SJohn Forte /* 1351fcf3ce44SJohn Forte * per spec. "cleanup failed for various reasons." 1352fcf3ce44SJohn Forte * Although those various reasons are undefined. 1353fcf3ce44SJohn Forte * Not sure what to do here. So fake success, 1354fcf3ce44SJohn Forte * which will disconnect the connection. 1355fcf3ce44SJohn Forte */ 1356fcf3ce44SJohn Forte /* FALLTHRU */ 1357fcf3ce44SJohn Forte case ISCSI_LOGOUT_SUCCESS: 1358fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E3, isp); 1359fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 136030e7468fSPeter Dunlap iscsi_drop_conn_cleanup(icp); 1361fcf3ce44SJohn Forte break; 1362fcf3ce44SJohn Forte default: 1363fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 136430e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 136530e7468fSPeter Dunlap break; 1366fcf3ce44SJohn Forte 136730e7468fSPeter Dunlap } 136830e7468fSPeter Dunlap return (status); 1369fcf3ce44SJohn Forte } 1370fcf3ce44SJohn Forte 1371fcf3ce44SJohn Forte /* 137230e7468fSPeter Dunlap * iscsi_rx_process_async_rsp 1373fcf3ce44SJohn Forte * 1374fcf3ce44SJohn Forte */ 1375fcf3ce44SJohn Forte /* ARGSUSED */ 137630e7468fSPeter Dunlap static idm_status_t 137730e7468fSPeter Dunlap iscsi_rx_process_async_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 1378fcf3ce44SJohn Forte { 137930e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 138030e7468fSPeter Dunlap iscsi_sess_t *isp = icp->conn_sess; 138130e7468fSPeter Dunlap idm_status_t rval = IDM_STATUS_SUCCESS; 138230e7468fSPeter Dunlap iscsi_task_t *itp; 138330e7468fSPeter Dunlap iscsi_async_evt_hdr_t *iaehp = 138430e7468fSPeter Dunlap (iscsi_async_evt_hdr_t *)pdu->isp_hdr; 1385fcf3ce44SJohn Forte 1386fcf3ce44SJohn Forte ASSERT(icp != NULL); 138730e7468fSPeter Dunlap ASSERT(pdu != NULL); 138830e7468fSPeter Dunlap ASSERT(isp != NULL); 1389fcf3ce44SJohn Forte 139030e7468fSPeter Dunlap mutex_enter(&isp->sess_cmdsn_mutex); 139130e7468fSPeter Dunlap if (icp->conn_expstatsn == ntohl(iaehp->statsn)) { 139230e7468fSPeter Dunlap icp->conn_expstatsn++; 139330e7468fSPeter Dunlap } else { 1394fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol error - " 139530e7468fSPeter Dunlap "received status out of order statsn:0x%x " 139630e7468fSPeter Dunlap "expstatsn:0x%x", icp->conn_oid, 1397fcf3ce44SJohn Forte ntohl(iaehp->statsn), icp->conn_expstatsn); 139830e7468fSPeter Dunlap mutex_exit(&isp->sess_cmdsn_mutex); 139930e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1400fcf3ce44SJohn Forte } 140130e7468fSPeter Dunlap mutex_exit(&isp->sess_cmdsn_mutex); 1402fcf3ce44SJohn Forte 1403fcf3ce44SJohn Forte switch (iaehp->async_event) { 1404fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_SCSI_EVENT: 1405fcf3ce44SJohn Forte /* 1406fcf3ce44SJohn Forte * SCSI asynchronous event is reported in 1407fcf3ce44SJohn Forte * the sense data. Sense data that accompanies 1408fcf3ce44SJohn Forte * the report in the data segment identifies the 1409fcf3ce44SJohn Forte * condition. If the target supports SCSI 1410fcf3ce44SJohn Forte * asynchronous events reporting (see [SAM2]) 1411fcf3ce44SJohn Forte * as indicated in the stardard INQUIRY data 1412fcf3ce44SJohn Forte * (see [SPC3]), its use may be enabled by 1413fcf3ce44SJohn Forte * parameters in the SCSI control mode page 1414fcf3ce44SJohn Forte * (see [SPC3]). 1415fcf3ce44SJohn Forte * 1416fcf3ce44SJohn Forte * T-10 has removed SCSI asunchronous events 1417fcf3ce44SJohn Forte * from the standard. Although we have seen 1418fcf3ce44SJohn Forte * a couple targets still spending these requests. 1419fcf3ce44SJohn Forte * Those targets were specifically sending them 1420fcf3ce44SJohn Forte * for notification of a LUN/Volume change 1421fcf3ce44SJohn Forte * (ex. LUN addition/removal). Take a general 1422fcf3ce44SJohn Forte * action to these events of dis/reconnecting. 1423fcf3ce44SJohn Forte * Once reconnected we perform a reenumeration. 1424fcf3ce44SJohn Forte */ 142530e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 1426fcf3ce44SJohn Forte break; 1427fcf3ce44SJohn Forte 1428fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_REQUEST_LOGOUT: 142930e7468fSPeter Dunlap /* 143030e7468fSPeter Dunlap * We've been asked to logout by the target -- 143130e7468fSPeter Dunlap * we need to treat this differently from a normal logout 143230e7468fSPeter Dunlap * due to a discovery failure. Normal logouts result in 143330e7468fSPeter Dunlap * an N3 event to the session state machine and an offline 143430e7468fSPeter Dunlap * of the lun. In this case we want to put the connection 143530e7468fSPeter Dunlap * into "failed" state and generate N5 to the session state 143630e7468fSPeter Dunlap * machine since the initiator logged out at the target's 143730e7468fSPeter Dunlap * request. To track this we set a flag indicating we 143830e7468fSPeter Dunlap * received this async logout request from the tharget 143930e7468fSPeter Dunlap */ 1440fcf3ce44SJohn Forte mutex_enter(&icp->conn_state_mutex); 144130e7468fSPeter Dunlap icp->conn_async_logout = B_TRUE; 1442fcf3ce44SJohn Forte mutex_exit(&icp->conn_state_mutex); 144330e7468fSPeter Dunlap 144492adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* Hold is released in iscsi_handle_logout. */ 144592adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States idm_conn_hold(ic); 144692adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States 144730e7468fSPeter Dunlap /* Target has requested this connection to logout. */ 144830e7468fSPeter Dunlap itp = kmem_zalloc(sizeof (iscsi_task_t), KM_SLEEP); 144930e7468fSPeter Dunlap itp->t_arg = icp; 145030e7468fSPeter Dunlap itp->t_blocking = B_FALSE; 145130e7468fSPeter Dunlap if (ddi_taskq_dispatch(isp->sess_taskq, 145230e7468fSPeter Dunlap (void(*)())iscsi_logout_start, itp, DDI_SLEEP) != 145330e7468fSPeter Dunlap DDI_SUCCESS) { 145492adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States idm_conn_rele(ic); 145530e7468fSPeter Dunlap /* Disconnect if we couldn't dispatch the task */ 145630e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 145730e7468fSPeter Dunlap } 1458fcf3ce44SJohn Forte break; 1459fcf3ce44SJohn Forte 1460fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_DROPPING_CONNECTION: 1461fcf3ce44SJohn Forte /* 1462fcf3ce44SJohn Forte * Target is going to drop our connection. 1463fcf3ce44SJohn Forte * param1 - CID which will be dropped. 1464fcf3ce44SJohn Forte * param2 - Min time to reconnect. 1465fcf3ce44SJohn Forte * param3 - Max time to reconnect. 1466fcf3ce44SJohn Forte * 1467fcf3ce44SJohn Forte * For now just let fail as another disconnect. 1468fcf3ce44SJohn Forte * 1469fcf3ce44SJohn Forte * MC/S Once we support > 1 connections then 1470fcf3ce44SJohn Forte * we need to check the CID and drop that 1471fcf3ce44SJohn Forte * specific connection. 1472fcf3ce44SJohn Forte */ 147330e7468fSPeter Dunlap iscsi_conn_set_login_min_max(icp, iaehp->param2, 147430e7468fSPeter Dunlap iaehp->param3); 147530e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 1476fcf3ce44SJohn Forte break; 1477fcf3ce44SJohn Forte 1478fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS: 1479fcf3ce44SJohn Forte /* 1480fcf3ce44SJohn Forte * Target is going to drop ALL connections. 1481fcf3ce44SJohn Forte * param2 - Min time to reconnect. 1482fcf3ce44SJohn Forte * param3 - Max time to reconnect. 1483fcf3ce44SJohn Forte * 1484fcf3ce44SJohn Forte * For now just let fail as anyother disconnect. 1485fcf3ce44SJohn Forte * 1486fcf3ce44SJohn Forte * MC/S Once we support more than > 1 connections 1487fcf3ce44SJohn Forte * then we need to drop all connections on the 1488fcf3ce44SJohn Forte * session. 1489fcf3ce44SJohn Forte */ 149030e7468fSPeter Dunlap iscsi_conn_set_login_min_max(icp, iaehp->param2, 149130e7468fSPeter Dunlap iaehp->param3); 149230e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 1493fcf3ce44SJohn Forte break; 1494fcf3ce44SJohn Forte 1495fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION: 1496fcf3ce44SJohn Forte /* 1497fcf3ce44SJohn Forte * Target requests parameter negotiation 1498fcf3ce44SJohn Forte * on this connection. 1499fcf3ce44SJohn Forte * 1500fcf3ce44SJohn Forte * The initiator must honor this request. For 1501fcf3ce44SJohn Forte * now we will request a logout. We can't 1502fcf3ce44SJohn Forte * just ignore this or it might force corruption? 1503fcf3ce44SJohn Forte */ 150492adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States 150592adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* Hold is released in iscsi_handle_logout */ 150692adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States idm_conn_hold(ic); 150730e7468fSPeter Dunlap itp = kmem_zalloc(sizeof (iscsi_task_t), KM_SLEEP); 150830e7468fSPeter Dunlap itp->t_arg = icp; 150930e7468fSPeter Dunlap itp->t_blocking = B_FALSE; 151030e7468fSPeter Dunlap if (ddi_taskq_dispatch(isp->sess_taskq, 151130e7468fSPeter Dunlap (void(*)())iscsi_logout_start, itp, DDI_SLEEP) != 151230e7468fSPeter Dunlap DDI_SUCCESS) { 151330e7468fSPeter Dunlap /* Disconnect if we couldn't dispatch the task */ 151492adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States idm_conn_rele(ic); 151530e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 151630e7468fSPeter Dunlap } 1517fcf3ce44SJohn Forte break; 1518fcf3ce44SJohn Forte 1519fcf3ce44SJohn Forte case ISCSI_ASYNC_EVENT_VENDOR_SPECIFIC: 1520fcf3ce44SJohn Forte /* 1521fcf3ce44SJohn Forte * We currently don't handle any vendor 1522fcf3ce44SJohn Forte * specific async events. So just ignore 1523fcf3ce44SJohn Forte * the request. 1524fcf3ce44SJohn Forte */ 152530e7468fSPeter Dunlap idm_ini_conn_disconnect(ic); 1526fcf3ce44SJohn Forte break; 1527fcf3ce44SJohn Forte default: 152830e7468fSPeter Dunlap rval = IDM_STATUS_PROTOCOL_ERROR; 1529fcf3ce44SJohn Forte } 1530fcf3ce44SJohn Forte 1531fcf3ce44SJohn Forte return (rval); 1532fcf3ce44SJohn Forte } 1533fcf3ce44SJohn Forte 1534fcf3ce44SJohn Forte /* 1535fcf3ce44SJohn Forte * iscsi_rx_process_text_rsp - processes iSCSI text response. It sets 1536fcf3ce44SJohn Forte * the cmd_result field of the command data structure with the actual 1537fcf3ce44SJohn Forte * status value instead of returning the status value. The return value 1538fcf3ce44SJohn Forte * is SUCCESS in order to let iscsi_handle_text control the operation of 1539fcf3ce44SJohn Forte * a text request. 154030e7468fSPeter Dunlap * Text requests are a handled a little different than other types of 1541fcf3ce44SJohn Forte * iSCSI commands because the initiator sends additional empty text requests 1542fcf3ce44SJohn Forte * in order to obtain the remaining responses required to complete the 1543fcf3ce44SJohn Forte * request. iscsi_handle_text controls the operation of text request, while 1544fcf3ce44SJohn Forte * iscsi_rx_process_text_rsp just process the current response. 1545fcf3ce44SJohn Forte */ 154630e7468fSPeter Dunlap static idm_status_t 154730e7468fSPeter Dunlap iscsi_rx_process_text_rsp(idm_conn_t *ic, idm_pdu_t *pdu) 1548fcf3ce44SJohn Forte { 1549fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 155030e7468fSPeter Dunlap iscsi_text_rsp_hdr_t *ithp = 155130e7468fSPeter Dunlap (iscsi_text_rsp_hdr_t *)pdu->isp_hdr; 155230e7468fSPeter Dunlap iscsi_conn_t *icp = ic->ic_handle; 1553fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 1554fcf3ce44SJohn Forte boolean_t final = B_FALSE; 1555fcf3ce44SJohn Forte uint32_t data_len; 155630e7468fSPeter Dunlap uint8_t *data = pdu->isp_data; 155730e7468fSPeter Dunlap idm_status_t rval; 1558fcf3ce44SJohn Forte 1559fcf3ce44SJohn Forte isp = icp->conn_sess; 1560fcf3ce44SJohn Forte 1561fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 156230e7468fSPeter Dunlap if ((rval = iscsi_rx_chk(icp, isp, (iscsi_scsi_rsp_hdr_t *)ithp, 156330e7468fSPeter Dunlap &icmdp)) != IDM_STATUS_SUCCESS) { 1564fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 156530e7468fSPeter Dunlap return (rval); 1566fcf3ce44SJohn Forte } 1567fcf3ce44SJohn Forte 1568fcf3ce44SJohn Forte /* update local final response flag */ 1569fcf3ce44SJohn Forte if (ithp->flags & ISCSI_FLAG_FINAL) { 1570fcf3ce44SJohn Forte final = B_TRUE; 1571fcf3ce44SJohn Forte } 1572fcf3ce44SJohn Forte 1573fcf3ce44SJohn Forte /* 1574fcf3ce44SJohn Forte * validate received TTT value. RFC3720 specifies the following: 1575fcf3ce44SJohn Forte * - F bit set to 1 MUST have a reserved TTT value 0xffffffff 1576fcf3ce44SJohn Forte * - F bit set to 0 MUST have a non-reserved TTT value !0xffffffff 1577fcf3ce44SJohn Forte * In addition, the received TTT value must not change between 1578fcf3ce44SJohn Forte * responses of a long text response 1579fcf3ce44SJohn Forte */ 1580fcf3ce44SJohn Forte if (((final == B_TRUE) && (ithp->ttt != ISCSI_RSVD_TASK_TAG)) || 1581fcf3ce44SJohn Forte ((final == B_FALSE) && (ithp->ttt == ISCSI_RSVD_TASK_TAG))) { 1582fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_PROTOCOL_ERROR; 1583fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_FINAL_RSP; 1584fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 1585fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol error - " 1586fcf3ce44SJohn Forte "received text response with invalid flags:0x%x or " 1587fcf3ce44SJohn Forte "ttt:0x%x", icp->conn_oid, ithp->flags, ithp->itt); 158830e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1589fcf3ce44SJohn Forte } 1590fcf3ce44SJohn Forte 1591fcf3ce44SJohn Forte if ((icmdp->cmd_un.text.stage == ISCSI_CMD_TEXT_INITIAL_REQ) && 1592fcf3ce44SJohn Forte (ithp->ttt == ISCSI_RSVD_TASK_TAG) && 1593fcf3ce44SJohn Forte (final == B_FALSE)) { 1594fcf3ce44SJohn Forte /* TTT should have matched reserved value */ 1595fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_PROTOCOL_ERROR; 1596fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_FINAL_RSP; 1597fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 1598fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi connection(%u) protocol " 1599fcf3ce44SJohn Forte "error - received text response with invalid " 1600fcf3ce44SJohn Forte "ttt:0x%x", icp->conn_oid, ithp->ttt); 160130e7468fSPeter Dunlap return (IDM_STATUS_PROTOCOL_ERROR); 1602fcf3ce44SJohn Forte } 1603fcf3ce44SJohn Forte 1604fcf3ce44SJohn Forte /* 1605fcf3ce44SJohn Forte * If this is first response, save away TTT value for later use 1606fcf3ce44SJohn Forte * in a long text request/response sequence 1607fcf3ce44SJohn Forte */ 1608fcf3ce44SJohn Forte if (icmdp->cmd_un.text.stage == ISCSI_CMD_TEXT_INITIAL_REQ) { 1609fcf3ce44SJohn Forte icmdp->cmd_un.text.ttt = ithp->ttt; 1610fcf3ce44SJohn Forte } 1611fcf3ce44SJohn Forte 1612fcf3ce44SJohn Forte data_len = ntoh24(ithp->dlength); 1613fcf3ce44SJohn Forte 1614fcf3ce44SJohn Forte /* check whether enough buffer available to copy data */ 1615fcf3ce44SJohn Forte if ((icmdp->cmd_un.text.total_rx_len + data_len) > 1616fcf3ce44SJohn Forte icmdp->cmd_un.text.buf_len) { 1617fcf3ce44SJohn Forte icmdp->cmd_un.text.total_rx_len += data_len; 1618fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_DATA_OVERFLOW; 1619fcf3ce44SJohn Forte /* 1620fcf3ce44SJohn Forte * DATA_OVERFLOW will result in a SUCCESS return so that 1621fcf3ce44SJohn Forte * iscsi_handle_text can continue to obtain the remaining 1622fcf3ce44SJohn Forte * text response if needed. 1623fcf3ce44SJohn Forte */ 1624fcf3ce44SJohn Forte } else { 1625fcf3ce44SJohn Forte char *buf_data = (icmdp->cmd_un.text.buf + 1626fcf3ce44SJohn Forte icmdp->cmd_un.text.offset); 1627fcf3ce44SJohn Forte 1628fcf3ce44SJohn Forte bcopy(data, buf_data, data_len); 1629fcf3ce44SJohn Forte icmdp->cmd_un.text.offset += data_len; 1630fcf3ce44SJohn Forte icmdp->cmd_un.text.total_rx_len += data_len; 1631fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_SUCCESS; 1632fcf3ce44SJohn Forte bcopy(ithp->rsvd4, icmdp->cmd_un.text.lun, 1633fcf3ce44SJohn Forte sizeof (icmdp->cmd_un.text.lun)); 1634fcf3ce44SJohn Forte } 1635fcf3ce44SJohn Forte 1636fcf3ce44SJohn Forte /* update stage */ 1637fcf3ce44SJohn Forte if (final == B_TRUE) { 1638fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_FINAL_RSP; 1639fcf3ce44SJohn Forte } else { 1640fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_CONTINUATION; 1641fcf3ce44SJohn Forte } 1642fcf3ce44SJohn Forte 1643fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E3, isp); 1644fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 164530e7468fSPeter Dunlap return (IDM_STATUS_SUCCESS); 164630e7468fSPeter Dunlap } 164730e7468fSPeter Dunlap 164830e7468fSPeter Dunlap /* 164930e7468fSPeter Dunlap * iscsi_rx_process_scsi_itt_to_icmdp - Lookup itt using IDM to find matching 165030e7468fSPeter Dunlap * icmdp. Verify itt in hdr and icmdp are the same. 165130e7468fSPeter Dunlap */ 165230e7468fSPeter Dunlap static iscsi_status_t 165330e7468fSPeter Dunlap iscsi_rx_process_scsi_itt_to_icmdp(iscsi_sess_t *isp, idm_conn_t *ic, 165430e7468fSPeter Dunlap iscsi_scsi_rsp_hdr_t *ihp, iscsi_cmd_t **icmdp) 165530e7468fSPeter Dunlap { 165630e7468fSPeter Dunlap idm_task_t *itp; 165730e7468fSPeter Dunlap 165830e7468fSPeter Dunlap ASSERT(isp != NULL); 165930e7468fSPeter Dunlap ASSERT(ihp != NULL); 166030e7468fSPeter Dunlap ASSERT(icmdp != NULL); 166130e7468fSPeter Dunlap ASSERT(mutex_owned(&isp->sess_cmdsn_mutex)); 166230e7468fSPeter Dunlap itp = idm_task_find_and_complete(ic, ihp->itt, ISCSI_INI_TASK_TTT); 166330e7468fSPeter Dunlap if (itp == NULL) { 166430e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi session(%u) protocol error - " 166530e7468fSPeter Dunlap "received unknown itt:0x%x - protocol error", 166630e7468fSPeter Dunlap isp->sess_oid, ihp->itt); 166730e7468fSPeter Dunlap return (ISCSI_STATUS_INTERNAL_ERROR); 166830e7468fSPeter Dunlap } 166930e7468fSPeter Dunlap *icmdp = itp->idt_private; 167030e7468fSPeter Dunlap 167130e7468fSPeter Dunlap idm_task_rele(itp); 167230e7468fSPeter Dunlap 1673fcf3ce44SJohn Forte return (ISCSI_STATUS_SUCCESS); 167430e7468fSPeter Dunlap 1675fcf3ce44SJohn Forte } 1676fcf3ce44SJohn Forte 1677fcf3ce44SJohn Forte /* 1678fcf3ce44SJohn Forte * iscsi_rx_process_itt_to_icmdp - Lookup itt in the session's 1679fcf3ce44SJohn Forte * cmd table to find matching icmdp. Verify itt in hdr and 1680fcf3ce44SJohn Forte * icmdp are the same. 1681fcf3ce44SJohn Forte */ 1682fcf3ce44SJohn Forte static iscsi_status_t 1683fcf3ce44SJohn Forte iscsi_rx_process_itt_to_icmdp(iscsi_sess_t *isp, iscsi_hdr_t *ihp, 1684fcf3ce44SJohn Forte iscsi_cmd_t **icmdp) 1685fcf3ce44SJohn Forte { 1686fcf3ce44SJohn Forte int cmd_table_idx = 0; 1687fcf3ce44SJohn Forte 1688fcf3ce44SJohn Forte ASSERT(isp != NULL); 1689fcf3ce44SJohn Forte ASSERT(ihp != NULL); 1690fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 1691fcf3ce44SJohn Forte ASSERT(mutex_owned(&isp->sess_cmdsn_mutex)); 1692fcf3ce44SJohn Forte 1693fcf3ce44SJohn Forte /* try to find an associated iscsi_pkt */ 169430e7468fSPeter Dunlap cmd_table_idx = (ihp->itt - IDM_TASKIDS_MAX) % ISCSI_CMD_TABLE_SIZE; 1695fcf3ce44SJohn Forte if (isp->sess_cmd_table[cmd_table_idx] == NULL) { 1696fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi session(%u) protocol error - " 1697fcf3ce44SJohn Forte "received unknown itt:0x%x - protocol error", 1698fcf3ce44SJohn Forte isp->sess_oid, ihp->itt); 1699fcf3ce44SJohn Forte return (ISCSI_STATUS_INTERNAL_ERROR); 1700fcf3ce44SJohn Forte } 1701fcf3ce44SJohn Forte 1702fcf3ce44SJohn Forte /* verify itt */ 1703fcf3ce44SJohn Forte if (isp->sess_cmd_table[cmd_table_idx]->cmd_itt != ihp->itt) { 1704fcf3ce44SJohn Forte cmn_err(CE_WARN, "iscsi session(%u) received itt:0x%x " 1705fcf3ce44SJohn Forte " which is out of sync with itt:0x%x", isp->sess_oid, 1706fcf3ce44SJohn Forte ihp->itt, isp->sess_cmd_table[cmd_table_idx]->cmd_itt); 1707fcf3ce44SJohn Forte return (ISCSI_STATUS_INTERNAL_ERROR); 1708fcf3ce44SJohn Forte } 1709fcf3ce44SJohn Forte 171029e23f3fSandrew.rutz@sun.com /* ensure that icmdp is still in Active state */ 171129e23f3fSandrew.rutz@sun.com if (isp->sess_cmd_table[cmd_table_idx]->cmd_state != 171229e23f3fSandrew.rutz@sun.com ISCSI_CMD_STATE_ACTIVE) { 171329e23f3fSandrew.rutz@sun.com cmn_err(CE_WARN, "iscsi session(%u) received itt:0x%x " 171429e23f3fSandrew.rutz@sun.com "but icmdp (%p) is not in active state", 171529e23f3fSandrew.rutz@sun.com isp->sess_oid, ihp->itt, 171629e23f3fSandrew.rutz@sun.com (void *)isp->sess_cmd_table[cmd_table_idx]); 171729e23f3fSandrew.rutz@sun.com return (ISCSI_STATUS_INTERNAL_ERROR); 171829e23f3fSandrew.rutz@sun.com } 171929e23f3fSandrew.rutz@sun.com 1720fcf3ce44SJohn Forte /* make sure this is a SCSI cmd */ 1721fcf3ce44SJohn Forte *icmdp = isp->sess_cmd_table[cmd_table_idx]; 1722fcf3ce44SJohn Forte 1723fcf3ce44SJohn Forte return (ISCSI_STATUS_SUCCESS); 1724fcf3ce44SJohn Forte } 1725fcf3ce44SJohn Forte 1726fcf3ce44SJohn Forte /* 1727fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 1728fcf3ce44SJohn Forte * | End of protocol receive routines | 1729fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 1730fcf3ce44SJohn Forte */ 1731fcf3ce44SJohn Forte 1732fcf3ce44SJohn Forte /* 1733fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 1734fcf3ce44SJohn Forte * | Beginning of protocol send routines | 1735fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 1736fcf3ce44SJohn Forte */ 1737fcf3ce44SJohn Forte 1738fcf3ce44SJohn Forte 1739fcf3ce44SJohn Forte /* 1740fcf3ce44SJohn Forte * iscsi_tx_thread - This thread is the driving point for all 174130e7468fSPeter Dunlap * iSCSI PDUs after login. No PDUs should call idm_pdu_tx() 1742fcf3ce44SJohn Forte * directly they should be funneled through iscsi_tx_thread. 1743fcf3ce44SJohn Forte */ 1744fcf3ce44SJohn Forte void 1745fcf3ce44SJohn Forte iscsi_tx_thread(iscsi_thread_t *thread, void *arg) 1746fcf3ce44SJohn Forte { 1747fcf3ce44SJohn Forte iscsi_conn_t *icp = (iscsi_conn_t *)arg; 1748fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 1749fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 1750fcf3ce44SJohn Forte clock_t tout; 1751fcf3ce44SJohn Forte int ret = 1; 1752fcf3ce44SJohn Forte 1753fcf3ce44SJohn Forte ASSERT(icp != NULL); 1754fcf3ce44SJohn Forte isp = icp->conn_sess; 1755fcf3ce44SJohn Forte ASSERT(isp != NULL); 1756fcf3ce44SJohn Forte ASSERT(thread != NULL); 1757fcf3ce44SJohn Forte ASSERT(thread->signature == SIG_ISCSI_THREAD); 1758fcf3ce44SJohn Forte 1759fcf3ce44SJohn Forte tout = SEC_TO_TICK(1); 1760fcf3ce44SJohn Forte /* 1761fcf3ce44SJohn Forte * Transfer icmdps until shutdown by owning session. 1762fcf3ce44SJohn Forte */ 1763fcf3ce44SJohn Forte while (ret != 0) { 1764fcf3ce44SJohn Forte 1765fcf3ce44SJohn Forte isp->sess_window_open = B_TRUE; 1766fcf3ce44SJohn Forte /* 1767fcf3ce44SJohn Forte * While the window is open, there are commands available 1768fcf3ce44SJohn Forte * to send and the session state allows those commands to 1769fcf3ce44SJohn Forte * be sent try to transfer them. 1770fcf3ce44SJohn Forte */ 1771fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 1772fcf3ce44SJohn Forte while ((isp->sess_window_open == B_TRUE) && 1773fcf3ce44SJohn Forte ((icmdp = isp->sess_queue_pending.head) != NULL) && 1774fcf3ce44SJohn Forte (((icmdp->cmd_type != ISCSI_CMD_TYPE_SCSI) && 1775fcf3ce44SJohn Forte (ISCSI_CONN_STATE_FULL_FEATURE(icp->conn_state))) || 1776fcf3ce44SJohn Forte (icp->conn_state == ISCSI_CONN_STATE_LOGGED_IN))) { 1777fcf3ce44SJohn Forte 1778fcf3ce44SJohn Forte /* update command with this connection info */ 1779fcf3ce44SJohn Forte icmdp->cmd_conn = icp; 1780fcf3ce44SJohn Forte /* attempt to send this command */ 1781fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E2, isp); 1782fcf3ce44SJohn Forte 1783fcf3ce44SJohn Forte ASSERT(!mutex_owned(&isp->sess_queue_pending.mutex)); 1784fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 1785fcf3ce44SJohn Forte } 1786fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 1787fcf3ce44SJohn Forte 1788fcf3ce44SJohn Forte /* 1789fcf3ce44SJohn Forte * Go to sleep until there is something new 1790fcf3ce44SJohn Forte * to process (awoken via cv_boardcast). 1791fcf3ce44SJohn Forte * Or the timer goes off. 1792fcf3ce44SJohn Forte */ 1793fcf3ce44SJohn Forte ret = iscsi_thread_wait(thread, tout); 1794fcf3ce44SJohn Forte } 1795fcf3ce44SJohn Forte 1796fcf3ce44SJohn Forte } 1797fcf3ce44SJohn Forte 1798fcf3ce44SJohn Forte 1799fcf3ce44SJohn Forte /* 1800fcf3ce44SJohn Forte * iscsi_tx_cmd - transfers icmdp across wire as iscsi pdu 1801fcf3ce44SJohn Forte * 1802fcf3ce44SJohn Forte * Just prior to sending the command to the networking layer the 1803fcf3ce44SJohn Forte * pending queue lock will be dropped. At this point only local 1804fcf3ce44SJohn Forte * resources will be used, not the icmdp. Holding the queue lock 1805fcf3ce44SJohn Forte * across the networking call can lead to a hang. (This is due 1806fcf3ce44SJohn Forte * to the the target driver and networking layers competing use 1807fcf3ce44SJohn Forte * of the timeout() resources and the queue lock being held for 1808fcf3ce44SJohn Forte * both sides.) Upon the completion of this command the lock 1809fcf3ce44SJohn Forte * will have been re-acquired. 1810fcf3ce44SJohn Forte */ 1811fcf3ce44SJohn Forte iscsi_status_t 1812fcf3ce44SJohn Forte iscsi_tx_cmd(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 1813fcf3ce44SJohn Forte { 1814fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_INTERNAL_ERROR; 1815fcf3ce44SJohn Forte 1816fcf3ce44SJohn Forte ASSERT(isp != NULL); 1817fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 1818fcf3ce44SJohn Forte 1819fcf3ce44SJohn Forte /* transfer specific command type */ 1820fcf3ce44SJohn Forte switch (icmdp->cmd_type) { 1821fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_SCSI: 1822fcf3ce44SJohn Forte rval = iscsi_tx_scsi(isp, icmdp); 1823fcf3ce44SJohn Forte break; 1824fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_NOP: 1825fcf3ce44SJohn Forte rval = iscsi_tx_nop(isp, icmdp); 1826fcf3ce44SJohn Forte break; 1827fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_ABORT: 1828fcf3ce44SJohn Forte rval = iscsi_tx_abort(isp, icmdp); 1829fcf3ce44SJohn Forte break; 1830fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_RESET: 1831fcf3ce44SJohn Forte rval = iscsi_tx_reset(isp, icmdp); 1832fcf3ce44SJohn Forte break; 1833fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_LOGOUT: 1834fcf3ce44SJohn Forte rval = iscsi_tx_logout(isp, icmdp); 1835fcf3ce44SJohn Forte break; 1836fcf3ce44SJohn Forte case ISCSI_CMD_TYPE_TEXT: 1837fcf3ce44SJohn Forte rval = iscsi_tx_text(isp, icmdp); 1838fcf3ce44SJohn Forte break; 1839fcf3ce44SJohn Forte default: 184030e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi_tx_cmd: invalid cmdtype: %d", 184130e7468fSPeter Dunlap icmdp->cmd_type); 1842fcf3ce44SJohn Forte ASSERT(FALSE); 1843fcf3ce44SJohn Forte } 1844fcf3ce44SJohn Forte 1845fcf3ce44SJohn Forte ASSERT(!mutex_owned(&isp->sess_queue_pending.mutex)); 1846fcf3ce44SJohn Forte return (rval); 1847fcf3ce44SJohn Forte } 1848fcf3ce44SJohn Forte 1849fcf3ce44SJohn Forte /* 1850fcf3ce44SJohn Forte * a variable length cdb can be up to 16K, but we obviously don't want 1851fcf3ce44SJohn Forte * to put that on the stack; go with 200 bytes; if we get something 1852fcf3ce44SJohn Forte * bigger than that we will kmem_alloc a buffer 1853fcf3ce44SJohn Forte */ 1854fcf3ce44SJohn Forte #define DEF_CDB_LEN 200 1855fcf3ce44SJohn Forte 1856fcf3ce44SJohn Forte /* 1857fcf3ce44SJohn Forte * given the size of the cdb, return how many bytes the header takes, 1858fcf3ce44SJohn Forte * which is the sizeof addl_hdr_t + the CDB size, minus the 16 bytes 1859fcf3ce44SJohn Forte * stored in the basic header, minus sizeof (ahs_extscb) 1860fcf3ce44SJohn Forte */ 1861fcf3ce44SJohn Forte #define ADDLHDRSZ(x) (sizeof (iscsi_addl_hdr_t) + (x) - \ 1862fcf3ce44SJohn Forte 16 - 4) 1863fcf3ce44SJohn Forte 186430e7468fSPeter Dunlap static void 186530e7468fSPeter Dunlap iscsi_tx_init_hdr(iscsi_sess_t *isp, iscsi_conn_t *icp, 18662b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_text_hdr_t *ihp, int opcode, iscsi_cmd_t *icmdp) 1867fcf3ce44SJohn Forte { 186830e7468fSPeter Dunlap ihp->opcode = opcode; 18692b79d384Sbing zhao - Sun Microsystems - Beijing China ihp->itt = icmdp->cmd_itt; 1870fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 18712b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_sn = isp->sess_cmdsn; 1872fcf3ce44SJohn Forte ihp->cmdsn = htonl(isp->sess_cmdsn); 1873fcf3ce44SJohn Forte isp->sess_cmdsn++; 1874fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 1875fcf3ce44SJohn Forte ihp->expstatsn = htonl(icp->conn_expstatsn); 1876fcf3ce44SJohn Forte icp->conn_laststatsn = icp->conn_expstatsn; 187730e7468fSPeter Dunlap } 1878fcf3ce44SJohn Forte 1879fcf3ce44SJohn Forte 188030e7468fSPeter Dunlap static void 188130e7468fSPeter Dunlap iscsi_tx_scsi_data(iscsi_cmd_t *icmdp, iscsi_scsi_cmd_hdr_t *ihp, 188230e7468fSPeter Dunlap iscsi_conn_t *icp, idm_pdu_t *pdu) 188330e7468fSPeter Dunlap { 188430e7468fSPeter Dunlap struct buf *bp = NULL; 188530e7468fSPeter Dunlap size_t buflen = 0; 188630e7468fSPeter Dunlap uint32_t first_burst_length = 0; 188730e7468fSPeter Dunlap struct scsi_pkt *pkt; 188830e7468fSPeter Dunlap 188930e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 1890fcf3ce44SJohn Forte bp = icmdp->cmd_un.scsi.bp; 1891fcf3ce44SJohn Forte if ((bp != NULL) && bp->b_bcount) { 1892fcf3ce44SJohn Forte buflen = bp->b_bcount; 189330e7468fSPeter Dunlap first_burst_length = 189430e7468fSPeter Dunlap icp->conn_params.first_burst_length; 1895fcf3ce44SJohn Forte 1896fcf3ce44SJohn Forte if (bp->b_flags & B_READ) { 1897fcf3ce44SJohn Forte ihp->flags = ISCSI_FLAG_FINAL; 1898fcf3ce44SJohn Forte /* 1899fcf3ce44SJohn Forte * fix problem where OS sends bp (B_READ & 1900fcf3ce44SJohn Forte * b_bcount!=0) for a TUR or START_STOP. 1901fcf3ce44SJohn Forte * (comment came from cisco code.) 1902fcf3ce44SJohn Forte */ 1903fcf3ce44SJohn Forte if ((pkt->pkt_cdbp[0] != SCMD_TEST_UNIT_READY) && 1904fcf3ce44SJohn Forte (pkt->pkt_cdbp[0] != SCMD_START_STOP)) { 1905fcf3ce44SJohn Forte ihp->flags |= ISCSI_FLAG_CMD_READ; 1906fcf3ce44SJohn Forte ihp->data_length = htonl(buflen); 1907fcf3ce44SJohn Forte } 1908fcf3ce44SJohn Forte } else { 1909fcf3ce44SJohn Forte ihp->flags = ISCSI_FLAG_CMD_WRITE; 1910fcf3ce44SJohn Forte /* 1911fcf3ce44SJohn Forte * FinalBit on the the iSCSI PDU denotes this 1912fcf3ce44SJohn Forte * is the last PDU in the sequence. 1913fcf3ce44SJohn Forte * 1914fcf3ce44SJohn Forte * initial_r2t = true means R2T is required 1915fcf3ce44SJohn Forte * for additional PDU, so there will be no more 1916fcf3ce44SJohn Forte * unsolicited PDUs following 1917fcf3ce44SJohn Forte */ 1918fcf3ce44SJohn Forte if (icp->conn_params.initial_r2t) { 1919fcf3ce44SJohn Forte ihp->flags |= ISCSI_FLAG_FINAL; 1920fcf3ce44SJohn Forte } 1921fcf3ce44SJohn Forte 1922fcf3ce44SJohn Forte /* Check if we should send ImmediateData */ 1923fcf3ce44SJohn Forte if (icp->conn_params.immediate_data) { 192430e7468fSPeter Dunlap pdu->isp_data = 192530e7468fSPeter Dunlap (uint8_t *)icmdp-> 192630e7468fSPeter Dunlap cmd_un.scsi.bp->b_un.b_addr; 192730e7468fSPeter Dunlap 192830e7468fSPeter Dunlap pdu->isp_datalen = MIN(MIN(buflen, 1929fcf3ce44SJohn Forte first_burst_length), 1930fcf3ce44SJohn Forte icmdp->cmd_conn->conn_params. 1931fcf3ce44SJohn Forte max_xmit_data_seg_len); 1932fcf3ce44SJohn Forte 1933fcf3ce44SJohn Forte /* 1934fcf3ce44SJohn Forte * if everything fits immediate, or 1935fcf3ce44SJohn Forte * we can send all burst data immediate 1936fcf3ce44SJohn Forte * (not unsol), set F 1937fcf3ce44SJohn Forte */ 193830e7468fSPeter Dunlap /* 193930e7468fSPeter Dunlap * XXX This doesn't look right -- it's not 194030e7468fSPeter Dunlap * clear how we can handle transmitting 194130e7468fSPeter Dunlap * any unsolicited data. It looks like 194230e7468fSPeter Dunlap * we only support immediate data. So what 194330e7468fSPeter Dunlap * happens if we don't set ISCSI_FLAG_FINAL? 194430e7468fSPeter Dunlap * 194530e7468fSPeter Dunlap * Unless there's magic code somewhere that 194630e7468fSPeter Dunlap * is sending the remaining PDU's we should 194730e7468fSPeter Dunlap * simply set ISCSI_FLAG_FINAL and forget 194830e7468fSPeter Dunlap * about sending unsolicited data. The big 194930e7468fSPeter Dunlap * win is the immediate data anyway for small 195030e7468fSPeter Dunlap * PDU's. 195130e7468fSPeter Dunlap */ 195230e7468fSPeter Dunlap if ((pdu->isp_datalen == buflen) || 195330e7468fSPeter Dunlap (pdu->isp_datalen == first_burst_length)) { 1954fcf3ce44SJohn Forte ihp->flags |= ISCSI_FLAG_FINAL; 1955fcf3ce44SJohn Forte } 1956fcf3ce44SJohn Forte 195730e7468fSPeter Dunlap hton24(ihp->dlength, pdu->isp_datalen); 1958fcf3ce44SJohn Forte } 1959fcf3ce44SJohn Forte /* total data transfer length */ 1960fcf3ce44SJohn Forte ihp->data_length = htonl(buflen); 1961fcf3ce44SJohn Forte } 1962fcf3ce44SJohn Forte } else { 1963fcf3ce44SJohn Forte ihp->flags = ISCSI_FLAG_FINAL; 1964fcf3ce44SJohn Forte } 196530e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred += pdu->isp_datalen; 196630e7468fSPeter Dunlap /* XXX How is this different from the code above? */ 196730e7468fSPeter Dunlap /* will idm send the next data command up to burst length? */ 196830e7468fSPeter Dunlap /* send the burstlen if we haven't sent immediate data */ 196930e7468fSPeter Dunlap /* CRM: should idm send difference min(buflen, first_burst) and imm? */ 197030e7468fSPeter Dunlap /* (MIN(first_burst_length, buflen) - imdata > 0) */ 197130e7468fSPeter Dunlap /* CRM_LATER: change this to generate unsolicited pdu */ 197230e7468fSPeter Dunlap if ((buflen > 0) && 197330e7468fSPeter Dunlap ((bp->b_flags & B_READ) == 0) && 197430e7468fSPeter Dunlap (icp->conn_params.initial_r2t == 0) && 197530e7468fSPeter Dunlap pdu->isp_datalen == 0) { 197630e7468fSPeter Dunlap 197730e7468fSPeter Dunlap pdu->isp_datalen = MIN(first_burst_length, buflen); 197830e7468fSPeter Dunlap if ((pdu->isp_datalen == buflen) || 197930e7468fSPeter Dunlap (pdu->isp_datalen == first_burst_length)) { 198030e7468fSPeter Dunlap ihp->flags |= ISCSI_FLAG_FINAL; 198130e7468fSPeter Dunlap } 198230e7468fSPeter Dunlap pdu->isp_data = (uint8_t *)icmdp->cmd_un.scsi.bp->b_un.b_addr; 198330e7468fSPeter Dunlap hton24(ihp->dlength, pdu->isp_datalen); 198430e7468fSPeter Dunlap } 198530e7468fSPeter Dunlap } 198630e7468fSPeter Dunlap 198730e7468fSPeter Dunlap static void 198830e7468fSPeter Dunlap iscsi_tx_scsi_init_pkt(iscsi_cmd_t *icmdp, iscsi_scsi_cmd_hdr_t *ihp) 198930e7468fSPeter Dunlap { 199030e7468fSPeter Dunlap struct scsi_pkt *pkt; 199130e7468fSPeter Dunlap 199230e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 199330e7468fSPeter Dunlap pkt->pkt_state = (STATE_GOT_BUS | STATE_GOT_TARGET); 199430e7468fSPeter Dunlap pkt->pkt_reason = CMD_INCOMPLETE; 1995fcf3ce44SJohn Forte 1996fcf3ce44SJohn Forte /* tagged queuing */ 1997fcf3ce44SJohn Forte if (pkt->pkt_flags & FLAG_HTAG) { 1998fcf3ce44SJohn Forte ihp->flags |= ISCSI_ATTR_HEAD_OF_QUEUE; 1999fcf3ce44SJohn Forte } else if (pkt->pkt_flags & FLAG_OTAG) { 2000fcf3ce44SJohn Forte ihp->flags |= ISCSI_ATTR_ORDERED; 2001fcf3ce44SJohn Forte } else if (pkt->pkt_flags & FLAG_STAG) { 2002fcf3ce44SJohn Forte ihp->flags |= ISCSI_ATTR_SIMPLE; 2003fcf3ce44SJohn Forte } else { 2004fcf3ce44SJohn Forte /* ihp->flags |= ISCSI_ATTR_UNTAGGED; */ 2005fcf3ce44SJohn Forte /* EMPTY */ 2006fcf3ce44SJohn Forte } 2007fcf3ce44SJohn Forte 2008fcf3ce44SJohn Forte /* iscsi states lun is based on spc.2 */ 2009fcf3ce44SJohn Forte ISCSI_LUN_BYTE_COPY(ihp->lun, icmdp->cmd_un.scsi.lun); 2010fcf3ce44SJohn Forte 2011fcf3ce44SJohn Forte if (icmdp->cmd_un.scsi.cmdlen <= 16) { 2012fcf3ce44SJohn Forte /* copy the SCSI Command Block into the PDU */ 2013fcf3ce44SJohn Forte bcopy(pkt->pkt_cdbp, ihp->scb, 2014fcf3ce44SJohn Forte icmdp->cmd_un.scsi.cmdlen); 2015fcf3ce44SJohn Forte } else { 2016fcf3ce44SJohn Forte iscsi_addl_hdr_t *iahp; 2017fcf3ce44SJohn Forte 2018fcf3ce44SJohn Forte iahp = (iscsi_addl_hdr_t *)ihp; 2019fcf3ce44SJohn Forte 2020fcf3ce44SJohn Forte ihp->hlength = (ADDLHDRSZ(icmdp->cmd_un.scsi.cmdlen) - 2021fcf3ce44SJohn Forte sizeof (iscsi_scsi_cmd_hdr_t) + 3) / 4; 2022fcf3ce44SJohn Forte iahp->ahs_hlen_hi = 0; 2023fcf3ce44SJohn Forte iahp->ahs_hlen_lo = (icmdp->cmd_un.scsi.cmdlen - 15); 2024fcf3ce44SJohn Forte iahp->ahs_key = 0x01; 2025fcf3ce44SJohn Forte iahp->ahs_resv = 0; 2026fcf3ce44SJohn Forte bcopy(pkt->pkt_cdbp, ihp->scb, 16); 202730e7468fSPeter Dunlap bcopy(((char *)pkt->pkt_cdbp) + 16, &iahp->ahs_extscb[0], 202830e7468fSPeter Dunlap icmdp->cmd_un.scsi.cmdlen); 2029fcf3ce44SJohn Forte } 2030fcf3ce44SJohn Forte 203130e7468fSPeter Dunlap /* 203230e7468fSPeter Dunlap * Update all values before transfering. 203330e7468fSPeter Dunlap * We should never touch the icmdp after 203430e7468fSPeter Dunlap * transfering if there is no more data 203530e7468fSPeter Dunlap * to send. The only case the idm_pdu_tx() 203630e7468fSPeter Dunlap * will fail is a on a connection disconnect 203730e7468fSPeter Dunlap * in that case the command will be flushed. 203830e7468fSPeter Dunlap */ 203930e7468fSPeter Dunlap pkt->pkt_state |= STATE_SENT_CMD; 2040fcf3ce44SJohn Forte } 2041fcf3ce44SJohn Forte 204230e7468fSPeter Dunlap static void 204330e7468fSPeter Dunlap iscsi_tx_scsi_init_task(iscsi_cmd_t *icmdp, iscsi_conn_t *icp, 204430e7468fSPeter Dunlap iscsi_scsi_cmd_hdr_t *ihp) 2045fcf3ce44SJohn Forte { 204630e7468fSPeter Dunlap idm_task_t *itp; 204730e7468fSPeter Dunlap struct buf *bp = NULL; 204830e7468fSPeter Dunlap uint32_t data_length; 2049fcf3ce44SJohn Forte 205030e7468fSPeter Dunlap bp = icmdp->cmd_un.scsi.bp; 2051fcf3ce44SJohn Forte 205230e7468fSPeter Dunlap itp = icmdp->cmd_itp; 205330e7468fSPeter Dunlap ASSERT(itp != NULL); 205430e7468fSPeter Dunlap data_length = ntohl(ihp->data_length); 205530e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 205630e7468fSPeter Dunlap "DEBUG: iscsi_tx_init_task: task_start: %p idt_tt: %x cmdsn: %x " 205730e7468fSPeter Dunlap "sess_cmdsn: %x cmd: %p " 205830e7468fSPeter Dunlap "cmdtype: %d datalen: %u", 205930e7468fSPeter Dunlap (void *)itp, itp->idt_tt, ihp->cmdsn, icp->conn_sess->sess_cmdsn, 206030e7468fSPeter Dunlap (void *)icmdp, icmdp->cmd_type, data_length); 206130e7468fSPeter Dunlap if (data_length > 0) { 206230e7468fSPeter Dunlap if (bp->b_flags & B_READ) { 206330e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_ibuf = 206430e7468fSPeter Dunlap idm_buf_alloc(icp->conn_ic, 206530e7468fSPeter Dunlap bp->b_un.b_addr, bp->b_bcount); 206630e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.ibp_ibuf) 206730e7468fSPeter Dunlap idm_buf_bind_in(itp, 206830e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_ibuf); 206930e7468fSPeter Dunlap } else { 207030e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_obuf = 207130e7468fSPeter Dunlap idm_buf_alloc(icp->conn_ic, 207230e7468fSPeter Dunlap bp->b_un.b_addr, bp->b_bcount); 207330e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.ibp_obuf) 207430e7468fSPeter Dunlap idm_buf_bind_out(itp, 207530e7468fSPeter Dunlap icmdp->cmd_un.scsi.ibp_obuf); 207630e7468fSPeter Dunlap } 207730e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, 207830e7468fSPeter Dunlap "DEBUG: pdu_tx: task_start(%s): %p ic: %p idt_tt: %x " 207930e7468fSPeter Dunlap "cmdsn: %x sess_cmdsn: %x sess_expcmdsn: %x obuf: %p " 208030e7468fSPeter Dunlap "cmdp: %p cmdtype: %d " 208130e7468fSPeter Dunlap "buflen: %lu " "bpaddr: %p datalen: %u ", 208230e7468fSPeter Dunlap bp->b_flags & B_READ ? "B_READ" : "B_WRITE", 208330e7468fSPeter Dunlap (void *)itp, (void *)icp->conn_ic, 208430e7468fSPeter Dunlap itp->idt_tt, ihp->cmdsn, 208530e7468fSPeter Dunlap icp->conn_sess->sess_cmdsn, 208630e7468fSPeter Dunlap icp->conn_sess->sess_expcmdsn, 208730e7468fSPeter Dunlap (void *)icmdp->cmd_un.scsi.ibp_ibuf, 208830e7468fSPeter Dunlap (void *)icmdp, icmdp->cmd_type, bp->b_bcount, 208930e7468fSPeter Dunlap (void *)bp->b_un.b_addr, 209030e7468fSPeter Dunlap data_length); 209130e7468fSPeter Dunlap } 2092fcf3ce44SJohn Forte 2093fcf3ce44SJohn Forte /* 209430e7468fSPeter Dunlap * Task is now active 2095fcf3ce44SJohn Forte */ 209630e7468fSPeter Dunlap idm_task_start(itp, ISCSI_INI_TASK_TTT); 2097fcf3ce44SJohn Forte } 2098fcf3ce44SJohn Forte 2099fcf3ce44SJohn Forte /* 210030e7468fSPeter Dunlap * iscsi_tx_scsi - 210130e7468fSPeter Dunlap * 2102fcf3ce44SJohn Forte */ 2103fcf3ce44SJohn Forte static iscsi_status_t 210430e7468fSPeter Dunlap iscsi_tx_scsi(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2105fcf3ce44SJohn Forte { 2106fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 210730e7468fSPeter Dunlap iscsi_conn_t *icp = NULL; 210830e7468fSPeter Dunlap struct scsi_pkt *pkt = NULL; 210930e7468fSPeter Dunlap iscsi_scsi_cmd_hdr_t *ihp = NULL; 211030e7468fSPeter Dunlap int cdblen = 0; 211130e7468fSPeter Dunlap idm_pdu_t *pdu; 211230e7468fSPeter Dunlap int len; 2113fcf3ce44SJohn Forte 2114fcf3ce44SJohn Forte ASSERT(isp != NULL); 2115fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2116fcf3ce44SJohn Forte 211730e7468fSPeter Dunlap pdu = kmem_zalloc(sizeof (idm_pdu_t), KM_SLEEP); 211830e7468fSPeter Dunlap 211930e7468fSPeter Dunlap pkt = icmdp->cmd_un.scsi.pkt; 212030e7468fSPeter Dunlap ASSERT(pkt != NULL); 212130e7468fSPeter Dunlap icp = icmdp->cmd_conn; 212230e7468fSPeter Dunlap ASSERT(icp != NULL); 212330e7468fSPeter Dunlap 212430e7468fSPeter Dunlap /* Reset counts in case we are on a retry */ 212530e7468fSPeter Dunlap icmdp->cmd_un.scsi.data_transferred = 0; 212630e7468fSPeter Dunlap 212730e7468fSPeter Dunlap if (icmdp->cmd_un.scsi.cmdlen > DEF_CDB_LEN) { 212830e7468fSPeter Dunlap cdblen = icmdp->cmd_un.scsi.cmdlen; 212930e7468fSPeter Dunlap ihp = kmem_zalloc(ADDLHDRSZ(cdblen), KM_SLEEP); 213030e7468fSPeter Dunlap len = ADDLHDRSZ(cdblen); 213130e7468fSPeter Dunlap } else { 213230e7468fSPeter Dunlap /* 213330e7468fSPeter Dunlap * only bzero the basic header; the additional header 213430e7468fSPeter Dunlap * will be set up correctly later, if needed 213530e7468fSPeter Dunlap */ 213630e7468fSPeter Dunlap ihp = kmem_zalloc(sizeof (iscsi_scsi_cmd_hdr_t), KM_SLEEP); 213730e7468fSPeter Dunlap len = sizeof (iscsi_scsi_cmd_hdr_t); 2138fcf3ce44SJohn Forte } 2139fcf3ce44SJohn Forte 214030e7468fSPeter Dunlap iscsi_tx_init_hdr(isp, icp, (iscsi_text_hdr_t *)ihp, 21412b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_OP_SCSI_CMD, icmdp); 214230e7468fSPeter Dunlap 214330e7468fSPeter Dunlap idm_pdu_init(pdu, icp->conn_ic, (void *)icmdp, &iscsi_tx_done); 214430e7468fSPeter Dunlap idm_pdu_init_hdr(pdu, (uint8_t *)ihp, len); 214530e7468fSPeter Dunlap pdu->isp_data = NULL; 214630e7468fSPeter Dunlap pdu->isp_datalen = 0; 2147fcf3ce44SJohn Forte 2148fcf3ce44SJohn Forte /* 214930e7468fSPeter Dunlap * Sestion 12.11 of the iSCSI specification has a good table 215030e7468fSPeter Dunlap * describing when uncolicited data and/or immediate data 215130e7468fSPeter Dunlap * should be sent. 2152fcf3ce44SJohn Forte */ 2153fcf3ce44SJohn Forte 215430e7468fSPeter Dunlap iscsi_tx_scsi_data(icmdp, ihp, icp, pdu); 215530e7468fSPeter Dunlap 215630e7468fSPeter Dunlap iscsi_tx_scsi_init_pkt(icmdp, ihp); 215730e7468fSPeter Dunlap 215830e7468fSPeter Dunlap /* Calls idm_task_start */ 215930e7468fSPeter Dunlap iscsi_tx_scsi_init_task(icmdp, icp, ihp); 216030e7468fSPeter Dunlap 2161fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 2162fcf3ce44SJohn Forte 216330e7468fSPeter Dunlap idm_pdu_tx(pdu); 2164fcf3ce44SJohn Forte 21652b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_misc_flags |= ISCSI_CMD_MISCFLAG_SENT; 21662b79d384Sbing zhao - Sun Microsystems - Beijing China 216730e7468fSPeter Dunlap return (rval); 216830e7468fSPeter Dunlap } 2169fcf3ce44SJohn Forte 2170fcf3ce44SJohn Forte 217130e7468fSPeter Dunlap /* ARGSUSED */ 217230e7468fSPeter Dunlap static void 217330e7468fSPeter Dunlap iscsi_tx_done(idm_pdu_t *pdu, idm_status_t status) 217430e7468fSPeter Dunlap { 217530e7468fSPeter Dunlap kmem_free((iscsi_hdr_t *)pdu->isp_hdr, pdu->isp_hdrlen); 217630e7468fSPeter Dunlap kmem_free(pdu, sizeof (idm_pdu_t)); 217730e7468fSPeter Dunlap } 2178fcf3ce44SJohn Forte 2179fcf3ce44SJohn Forte 218030e7468fSPeter Dunlap static void 218130e7468fSPeter Dunlap iscsi_tx_pdu(iscsi_conn_t *icp, int opcode, void *hdr, int hdrlen, 218230e7468fSPeter Dunlap iscsi_cmd_t *icmdp) 218330e7468fSPeter Dunlap { 218430e7468fSPeter Dunlap idm_pdu_t *tx_pdu; 218530e7468fSPeter Dunlap iscsi_hdr_t *ihp = (iscsi_hdr_t *)hdr; 2186fcf3ce44SJohn Forte 218730e7468fSPeter Dunlap tx_pdu = kmem_zalloc(sizeof (idm_pdu_t), KM_SLEEP); 218830e7468fSPeter Dunlap ASSERT(tx_pdu != NULL); 2189fcf3ce44SJohn Forte 219030e7468fSPeter Dunlap idm_pdu_init(tx_pdu, icp->conn_ic, icmdp, &iscsi_tx_done); 219130e7468fSPeter Dunlap idm_pdu_init_hdr(tx_pdu, hdr, hdrlen); 219230e7468fSPeter Dunlap if (opcode == ISCSI_OP_TEXT_CMD) { 219330e7468fSPeter Dunlap idm_pdu_init_data(tx_pdu, 219430e7468fSPeter Dunlap (uint8_t *)icmdp->cmd_un.text.buf, 219530e7468fSPeter Dunlap ntoh24(ihp->dlength)); 2196fcf3ce44SJohn Forte } 2197fcf3ce44SJohn Forte 219830e7468fSPeter Dunlap mutex_exit(&icp->conn_sess->sess_queue_pending.mutex); 219930e7468fSPeter Dunlap idm_pdu_tx(tx_pdu); 22002b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_misc_flags |= ISCSI_CMD_MISCFLAG_SENT; 2201fcf3ce44SJohn Forte } 2202fcf3ce44SJohn Forte 2203fcf3ce44SJohn Forte 2204fcf3ce44SJohn Forte /* 2205fcf3ce44SJohn Forte * iscsi_tx_nop - 2206fcf3ce44SJohn Forte * 2207fcf3ce44SJohn Forte */ 2208fcf3ce44SJohn Forte static iscsi_status_t 2209fcf3ce44SJohn Forte iscsi_tx_nop(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2210fcf3ce44SJohn Forte { 2211fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2212fcf3ce44SJohn Forte iscsi_conn_t *icp = NULL; 221330e7468fSPeter Dunlap iscsi_nop_out_hdr_t *inohp; 2214fcf3ce44SJohn Forte 2215fcf3ce44SJohn Forte ASSERT(isp != NULL); 2216fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2217fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2218fcf3ce44SJohn Forte ASSERT(icp != NULL); 2219fcf3ce44SJohn Forte 222030e7468fSPeter Dunlap inohp = kmem_zalloc(sizeof (iscsi_nop_out_hdr_t), KM_SLEEP); 222130e7468fSPeter Dunlap ASSERT(inohp != NULL); 222230e7468fSPeter Dunlap 222330e7468fSPeter Dunlap inohp->opcode = ISCSI_OP_NOOP_OUT | ISCSI_OP_IMMEDIATE; 222430e7468fSPeter Dunlap inohp->flags = ISCSI_FLAG_FINAL; 222530e7468fSPeter Dunlap inohp->itt = icmdp->cmd_itt; 222630e7468fSPeter Dunlap inohp->ttt = icmdp->cmd_ttt; 2227fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 22282b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_sn = isp->sess_cmdsn; 222930e7468fSPeter Dunlap inohp->cmdsn = htonl(isp->sess_cmdsn); 2230fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 223130e7468fSPeter Dunlap inohp->expstatsn = htonl(icp->conn_expstatsn); 2232fcf3ce44SJohn Forte icp->conn_laststatsn = icp->conn_expstatsn; 223330e7468fSPeter Dunlap iscsi_tx_pdu(icp, ISCSI_OP_NOOP_OUT, inohp, 223430e7468fSPeter Dunlap sizeof (iscsi_nop_out_hdr_t), icmdp); 2235fcf3ce44SJohn Forte return (rval); 2236fcf3ce44SJohn Forte } 2237fcf3ce44SJohn Forte 2238fcf3ce44SJohn Forte 2239fcf3ce44SJohn Forte /* 2240fcf3ce44SJohn Forte * iscsi_tx_abort - 2241fcf3ce44SJohn Forte * 2242fcf3ce44SJohn Forte */ 2243fcf3ce44SJohn Forte static iscsi_status_t 2244fcf3ce44SJohn Forte iscsi_tx_abort(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2245fcf3ce44SJohn Forte { 2246fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2247fcf3ce44SJohn Forte iscsi_conn_t *icp = NULL; 224830e7468fSPeter Dunlap iscsi_scsi_task_mgt_hdr_t *istmh; 2249fcf3ce44SJohn Forte 2250fcf3ce44SJohn Forte ASSERT(isp != NULL); 2251fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2252fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2253fcf3ce44SJohn Forte ASSERT(icp != NULL); 2254fcf3ce44SJohn Forte 225530e7468fSPeter Dunlap istmh = kmem_zalloc(sizeof (iscsi_scsi_task_mgt_hdr_t), KM_SLEEP); 225630e7468fSPeter Dunlap ASSERT(istmh != NULL); 2257fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 22582b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_sn = isp->sess_cmdsn; 225930e7468fSPeter Dunlap istmh->cmdsn = htonl(isp->sess_cmdsn); 2260fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 226130e7468fSPeter Dunlap istmh->expstatsn = htonl(icp->conn_expstatsn); 2262fcf3ce44SJohn Forte icp->conn_laststatsn = icp->conn_expstatsn; 226330e7468fSPeter Dunlap istmh->itt = icmdp->cmd_itt; 226430e7468fSPeter Dunlap istmh->opcode = ISCSI_OP_SCSI_TASK_MGT_MSG | ISCSI_OP_IMMEDIATE; 226530e7468fSPeter Dunlap istmh->function = ISCSI_FLAG_FINAL | ISCSI_TM_FUNC_ABORT_TASK; 226630e7468fSPeter Dunlap ISCSI_LUN_BYTE_COPY(istmh->lun, 2267fcf3ce44SJohn Forte icmdp->cmd_un.abort.icmdp->cmd_un.scsi.lun); 226830e7468fSPeter Dunlap istmh->rtt = icmdp->cmd_un.abort.icmdp->cmd_itt; 226930e7468fSPeter Dunlap iscsi_tx_pdu(icp, ISCSI_OP_SCSI_TASK_MGT_MSG, istmh, 227030e7468fSPeter Dunlap sizeof (iscsi_scsi_task_mgt_hdr_t), icmdp); 2271fcf3ce44SJohn Forte 2272fcf3ce44SJohn Forte return (rval); 2273fcf3ce44SJohn Forte } 2274fcf3ce44SJohn Forte 2275fcf3ce44SJohn Forte 2276fcf3ce44SJohn Forte /* 2277fcf3ce44SJohn Forte * iscsi_tx_reset - 2278fcf3ce44SJohn Forte * 2279fcf3ce44SJohn Forte */ 2280fcf3ce44SJohn Forte static iscsi_status_t 2281fcf3ce44SJohn Forte iscsi_tx_reset(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2282fcf3ce44SJohn Forte { 2283fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2284fcf3ce44SJohn Forte iscsi_conn_t *icp = NULL; 228530e7468fSPeter Dunlap iscsi_scsi_task_mgt_hdr_t *istmh; 2286fcf3ce44SJohn Forte 2287fcf3ce44SJohn Forte ASSERT(isp != NULL); 2288fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2289fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2290fcf3ce44SJohn Forte ASSERT(icp != NULL); 2291fcf3ce44SJohn Forte 229230e7468fSPeter Dunlap istmh = kmem_zalloc(sizeof (iscsi_scsi_task_mgt_hdr_t), KM_SLEEP); 229330e7468fSPeter Dunlap ASSERT(istmh != NULL); 229430e7468fSPeter Dunlap istmh->opcode = ISCSI_OP_SCSI_TASK_MGT_MSG | ISCSI_OP_IMMEDIATE; 2295fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 22962b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_sn = isp->sess_cmdsn; 229730e7468fSPeter Dunlap istmh->cmdsn = htonl(isp->sess_cmdsn); 2298fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 229930e7468fSPeter Dunlap istmh->expstatsn = htonl(icp->conn_expstatsn); 230030e7468fSPeter Dunlap istmh->itt = icmdp->cmd_itt; 2301fcf3ce44SJohn Forte 2302fcf3ce44SJohn Forte switch (icmdp->cmd_un.reset.level) { 2303fcf3ce44SJohn Forte case RESET_LUN: 230430e7468fSPeter Dunlap istmh->function = ISCSI_FLAG_FINAL | 2305fcf3ce44SJohn Forte ISCSI_TM_FUNC_LOGICAL_UNIT_RESET; 230630e7468fSPeter Dunlap ISCSI_LUN_BYTE_COPY(istmh->lun, icmdp->cmd_lun->lun_num); 2307fcf3ce44SJohn Forte break; 2308fcf3ce44SJohn Forte case RESET_TARGET: 2309fcf3ce44SJohn Forte case RESET_BUS: 231030e7468fSPeter Dunlap istmh->function = ISCSI_FLAG_FINAL | 2311fcf3ce44SJohn Forte ISCSI_TM_FUNC_TARGET_WARM_RESET; 2312fcf3ce44SJohn Forte break; 2313fcf3ce44SJohn Forte default: 2314fcf3ce44SJohn Forte /* unsupported / unknown level */ 2315fcf3ce44SJohn Forte ASSERT(FALSE); 2316fcf3ce44SJohn Forte break; 2317fcf3ce44SJohn Forte } 2318fcf3ce44SJohn Forte 231930e7468fSPeter Dunlap iscsi_tx_pdu(icp, ISCSI_OP_SCSI_TASK_MGT_MSG, istmh, 232030e7468fSPeter Dunlap sizeof (iscsi_scsi_task_mgt_hdr_t), icmdp); 2321fcf3ce44SJohn Forte 2322fcf3ce44SJohn Forte return (rval); 2323fcf3ce44SJohn Forte } 2324fcf3ce44SJohn Forte 2325fcf3ce44SJohn Forte 2326fcf3ce44SJohn Forte /* 2327fcf3ce44SJohn Forte * iscsi_tx_logout - 2328fcf3ce44SJohn Forte * 2329fcf3ce44SJohn Forte */ 2330fcf3ce44SJohn Forte static iscsi_status_t 2331fcf3ce44SJohn Forte iscsi_tx_logout(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2332fcf3ce44SJohn Forte { 2333fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2334fcf3ce44SJohn Forte iscsi_conn_t *icp = NULL; 233530e7468fSPeter Dunlap iscsi_logout_hdr_t *ilh; 2336fcf3ce44SJohn Forte 2337fcf3ce44SJohn Forte ASSERT(isp != NULL); 2338fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2339fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2340fcf3ce44SJohn Forte ASSERT(icp != NULL); 2341fcf3ce44SJohn Forte 234230e7468fSPeter Dunlap ilh = kmem_zalloc(sizeof (iscsi_logout_hdr_t), KM_SLEEP); 234330e7468fSPeter Dunlap ilh->opcode = ISCSI_OP_LOGOUT_CMD | ISCSI_OP_IMMEDIATE; 234430e7468fSPeter Dunlap ilh->flags = ISCSI_FLAG_FINAL | ISCSI_LOGOUT_REASON_CLOSE_SESSION; 234530e7468fSPeter Dunlap ilh->itt = icmdp->cmd_itt; 234630e7468fSPeter Dunlap ilh->cid = icp->conn_cid; 2347fcf3ce44SJohn Forte mutex_enter(&isp->sess_cmdsn_mutex); 23482b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_sn = isp->sess_cmdsn; 234930e7468fSPeter Dunlap ilh->cmdsn = htonl(isp->sess_cmdsn); 2350fcf3ce44SJohn Forte mutex_exit(&isp->sess_cmdsn_mutex); 235130e7468fSPeter Dunlap ilh->expstatsn = htonl(icp->conn_expstatsn); 235230e7468fSPeter Dunlap iscsi_tx_pdu(icp, ISCSI_OP_LOGOUT_CMD, ilh, 235330e7468fSPeter Dunlap sizeof (iscsi_logout_hdr_t), icmdp); 2354fcf3ce44SJohn Forte 2355fcf3ce44SJohn Forte return (rval); 2356fcf3ce44SJohn Forte } 2357fcf3ce44SJohn Forte 2358fcf3ce44SJohn Forte /* 2359fcf3ce44SJohn Forte * iscsi_tx_text - setup iSCSI text request header and send PDU with 2360fcf3ce44SJohn Forte * data given in the buffer attached to the command. For a single 2361fcf3ce44SJohn Forte * text request, the target may need to send its response in multiple 2362fcf3ce44SJohn Forte * text response. In this case, empty text requests are sent after 2363fcf3ce44SJohn Forte * each received response to notify the target the initiator is ready 2364fcf3ce44SJohn Forte * for more response. For the initial request, the data_len field in 2365fcf3ce44SJohn Forte * the text specific portion of a command is set to the amount of data 2366fcf3ce44SJohn Forte * the initiator wants to send as part of the request. If additional 2367fcf3ce44SJohn Forte * empty text requests are required for long responses, the data_len 2368fcf3ce44SJohn Forte * field is set to 0 by the iscsi_handle_text function. 2369fcf3ce44SJohn Forte */ 2370fcf3ce44SJohn Forte static iscsi_status_t 2371fcf3ce44SJohn Forte iscsi_tx_text(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 2372fcf3ce44SJohn Forte { 2373fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2374fcf3ce44SJohn Forte iscsi_conn_t *icp = NULL; 237530e7468fSPeter Dunlap iscsi_text_hdr_t *ith; 2376fcf3ce44SJohn Forte 2377fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2378fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2379fcf3ce44SJohn Forte ASSERT(icp != NULL); 2380fcf3ce44SJohn Forte 238130e7468fSPeter Dunlap ith = kmem_zalloc(sizeof (iscsi_text_hdr_t), KM_SLEEP); 238230e7468fSPeter Dunlap ASSERT(ith != NULL); 238330e7468fSPeter Dunlap ith->flags = ISCSI_FLAG_FINAL; 238430e7468fSPeter Dunlap hton24(ith->dlength, icmdp->cmd_un.text.data_len); 238530e7468fSPeter Dunlap ith->ttt = icmdp->cmd_un.text.ttt; 238630e7468fSPeter Dunlap iscsi_tx_init_hdr(isp, icp, (iscsi_text_hdr_t *)ith, 23872b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_OP_TEXT_CMD, icmdp); 238830e7468fSPeter Dunlap bcopy(icmdp->cmd_un.text.lun, ith->rsvd4, sizeof (ith->rsvd4)); 2389fcf3ce44SJohn Forte 239030e7468fSPeter Dunlap iscsi_tx_pdu(icp, ISCSI_OP_TEXT_CMD, ith, sizeof (iscsi_text_hdr_t), 239130e7468fSPeter Dunlap icmdp); 2392fcf3ce44SJohn Forte 2393fcf3ce44SJohn Forte return (rval); 2394fcf3ce44SJohn Forte } 2395fcf3ce44SJohn Forte 2396fcf3ce44SJohn Forte /* 2397fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 2398fcf3ce44SJohn Forte * | End of protocol send routines | 2399fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 2400fcf3ce44SJohn Forte */ 2401fcf3ce44SJohn Forte 2402fcf3ce44SJohn Forte /* 2403fcf3ce44SJohn Forte * iscsi_handle_abort - 2404fcf3ce44SJohn Forte * 2405fcf3ce44SJohn Forte */ 2406fcf3ce44SJohn Forte void 2407fcf3ce44SJohn Forte iscsi_handle_abort(void *arg) 2408fcf3ce44SJohn Forte { 2409fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 2410fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = (iscsi_cmd_t *)arg; 2411fcf3ce44SJohn Forte iscsi_cmd_t *new_icmdp; 2412fcf3ce44SJohn Forte iscsi_conn_t *icp; 2413fcf3ce44SJohn Forte 2414fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2415fcf3ce44SJohn Forte icp = icmdp->cmd_conn; 2416fcf3ce44SJohn Forte ASSERT(icp != NULL); 2417fcf3ce44SJohn Forte isp = icp->conn_sess; 2418fcf3ce44SJohn Forte ASSERT(isp != NULL); 2419fcf3ce44SJohn Forte 2420fcf3ce44SJohn Forte /* there should only be one abort */ 2421fcf3ce44SJohn Forte ASSERT(icmdp->cmd_un.scsi.abort_icmdp == NULL); 2422fcf3ce44SJohn Forte 2423fcf3ce44SJohn Forte new_icmdp = iscsi_cmd_alloc(icp, KM_SLEEP); 24242b79d384Sbing zhao - Sun Microsystems - Beijing China new_icmdp->cmd_type = ISCSI_CMD_TYPE_ABORT; 24252b79d384Sbing zhao - Sun Microsystems - Beijing China new_icmdp->cmd_lun = icmdp->cmd_lun; 24262b79d384Sbing zhao - Sun Microsystems - Beijing China new_icmdp->cmd_un.abort.icmdp = icmdp; 24272b79d384Sbing zhao - Sun Microsystems - Beijing China new_icmdp->cmd_conn = icmdp->cmd_conn; 24282b79d384Sbing zhao - Sun Microsystems - Beijing China icmdp->cmd_un.scsi.abort_icmdp = new_icmdp; 2429fcf3ce44SJohn Forte 2430fcf3ce44SJohn Forte /* pending queue mutex is already held by timeout_checks */ 2431fcf3ce44SJohn Forte iscsi_cmd_state_machine(new_icmdp, ISCSI_CMD_EVENT_E1, isp); 2432fcf3ce44SJohn Forte } 2433fcf3ce44SJohn Forte 243430e7468fSPeter Dunlap /* 243530e7468fSPeter Dunlap * Callback from IDM indicating that the task has been suspended or aborted. 243630e7468fSPeter Dunlap */ 243730e7468fSPeter Dunlap void 243830e7468fSPeter Dunlap iscsi_task_aborted(idm_task_t *idt, idm_status_t status) 243930e7468fSPeter Dunlap { 244030e7468fSPeter Dunlap iscsi_cmd_t *icmdp = idt->idt_private; 244130e7468fSPeter Dunlap iscsi_conn_t *icp = icmdp->cmd_conn; 244230e7468fSPeter Dunlap iscsi_sess_t *isp = icp->conn_sess; 244330e7468fSPeter Dunlap 244430e7468fSPeter Dunlap ASSERT(icmdp->cmd_conn != NULL); 244530e7468fSPeter Dunlap 244630e7468fSPeter Dunlap switch (status) { 244730e7468fSPeter Dunlap case IDM_STATUS_SUSPENDED: 244830e7468fSPeter Dunlap /* 244930e7468fSPeter Dunlap * If the task is suspended, it may be aborted later, 245030e7468fSPeter Dunlap * so we can ignore this notification. 245130e7468fSPeter Dunlap */ 245230e7468fSPeter Dunlap break; 245330e7468fSPeter Dunlap 245430e7468fSPeter Dunlap case IDM_STATUS_ABORTED: 245530e7468fSPeter Dunlap mutex_enter(&icp->conn_queue_active.mutex); 245630e7468fSPeter Dunlap iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E9, isp); 245730e7468fSPeter Dunlap mutex_exit(&icp->conn_queue_active.mutex); 245830e7468fSPeter Dunlap break; 245930e7468fSPeter Dunlap 246030e7468fSPeter Dunlap default: 246130e7468fSPeter Dunlap /* 246230e7468fSPeter Dunlap * Unexpected status. 246330e7468fSPeter Dunlap */ 246430e7468fSPeter Dunlap ASSERT(0); 246530e7468fSPeter Dunlap } 246630e7468fSPeter Dunlap 246730e7468fSPeter Dunlap } 2468fcf3ce44SJohn Forte 2469fcf3ce44SJohn Forte /* 2470fcf3ce44SJohn Forte * iscsi_handle_nop - 2471fcf3ce44SJohn Forte * 2472fcf3ce44SJohn Forte */ 2473fcf3ce44SJohn Forte static void 2474fcf3ce44SJohn Forte iscsi_handle_nop(iscsi_conn_t *icp, uint32_t itt, uint32_t ttt) 2475fcf3ce44SJohn Forte { 2476fcf3ce44SJohn Forte iscsi_sess_t *isp = NULL; 2477fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 2478fcf3ce44SJohn Forte 2479fcf3ce44SJohn Forte ASSERT(icp != NULL); 2480fcf3ce44SJohn Forte isp = icp->conn_sess; 2481fcf3ce44SJohn Forte ASSERT(isp != NULL); 2482fcf3ce44SJohn Forte 2483fcf3ce44SJohn Forte icmdp = iscsi_cmd_alloc(icp, KM_NOSLEEP); 2484fcf3ce44SJohn Forte if (icmdp == NULL) { 2485fcf3ce44SJohn Forte return; 2486fcf3ce44SJohn Forte } 2487fcf3ce44SJohn Forte 2488fcf3ce44SJohn Forte icmdp->cmd_type = ISCSI_CMD_TYPE_NOP; 2489fcf3ce44SJohn Forte icmdp->cmd_itt = itt; 2490fcf3ce44SJohn Forte icmdp->cmd_ttt = ttt; 2491fcf3ce44SJohn Forte icmdp->cmd_lun = NULL; 2492fcf3ce44SJohn Forte icp->conn_nop_lbolt = ddi_get_lbolt(); 2493fcf3ce44SJohn Forte 2494fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E1, isp); 2495fcf3ce44SJohn Forte } 2496fcf3ce44SJohn Forte 2497fcf3ce44SJohn Forte /* 24982b79d384Sbing zhao - Sun Microsystems - Beijing China * iscsi_handle_reset - send reset request to the target 2499fcf3ce44SJohn Forte * 2500fcf3ce44SJohn Forte */ 2501fcf3ce44SJohn Forte iscsi_status_t 2502fcf3ce44SJohn Forte iscsi_handle_reset(iscsi_sess_t *isp, int level, iscsi_lun_t *ilp) 2503fcf3ce44SJohn Forte { 2504fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2505fcf3ce44SJohn Forte iscsi_conn_t *icp; 2506fcf3ce44SJohn Forte iscsi_cmd_t icmd; 2507fcf3ce44SJohn Forte 2508fcf3ce44SJohn Forte ASSERT(isp != NULL); 2509fcf3ce44SJohn Forte 25102b79d384Sbing zhao - Sun Microsystems - Beijing China if (level == RESET_LUN) { 25112b79d384Sbing zhao - Sun Microsystems - Beijing China rw_enter(&isp->sess_lun_list_rwlock, RW_WRITER); 25122b79d384Sbing zhao - Sun Microsystems - Beijing China ASSERT(ilp != NULL); 25132b79d384Sbing zhao - Sun Microsystems - Beijing China if (ilp->lun_state & ISCSI_LUN_STATE_BUSY) { 25142b79d384Sbing zhao - Sun Microsystems - Beijing China rw_exit(&isp->sess_lun_list_rwlock); 25152b79d384Sbing zhao - Sun Microsystems - Beijing China return (ISCSI_STATUS_SUCCESS); 25162b79d384Sbing zhao - Sun Microsystems - Beijing China } 25172b79d384Sbing zhao - Sun Microsystems - Beijing China ilp->lun_state |= ISCSI_LUN_STATE_BUSY; 25182b79d384Sbing zhao - Sun Microsystems - Beijing China rw_exit(&isp->sess_lun_list_rwlock); 25192b79d384Sbing zhao - Sun Microsystems - Beijing China } else { 25202b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&isp->sess_reset_mutex); 25212b79d384Sbing zhao - Sun Microsystems - Beijing China if (isp->sess_reset_in_progress == B_TRUE) { 25222b79d384Sbing zhao - Sun Microsystems - Beijing China /* 25232b79d384Sbing zhao - Sun Microsystems - Beijing China * If the reset is in progress, it is unnecessary 25242b79d384Sbing zhao - Sun Microsystems - Beijing China * to send reset to the target redunantly. 25252b79d384Sbing zhao - Sun Microsystems - Beijing China */ 25262b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_reset_mutex); 25272b79d384Sbing zhao - Sun Microsystems - Beijing China return (ISCSI_STATUS_SUCCESS); 25282b79d384Sbing zhao - Sun Microsystems - Beijing China } 25292b79d384Sbing zhao - Sun Microsystems - Beijing China isp->sess_reset_in_progress = B_TRUE; 25302b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_reset_mutex); 25312b79d384Sbing zhao - Sun Microsystems - Beijing China } 25322b79d384Sbing zhao - Sun Microsystems - Beijing China 2533fcf3ce44SJohn Forte bzero(&icmd, sizeof (iscsi_cmd_t)); 2534fcf3ce44SJohn Forte icmd.cmd_sig = ISCSI_SIG_CMD; 2535fcf3ce44SJohn Forte icmd.cmd_state = ISCSI_CMD_STATE_FREE; 2536fcf3ce44SJohn Forte icmd.cmd_type = ISCSI_CMD_TYPE_RESET; 2537fcf3ce44SJohn Forte icmd.cmd_lun = ilp; 2538fcf3ce44SJohn Forte icmd.cmd_un.reset.level = level; 2539fcf3ce44SJohn Forte icmd.cmd_result = ISCSI_STATUS_SUCCESS; 2540fcf3ce44SJohn Forte icmd.cmd_completed = B_FALSE; 25412b79d384Sbing zhao - Sun Microsystems - Beijing China icmd.cmd_un.reset.response = SCSI_TCP_TM_RESP_COMPLETE; 25422b79d384Sbing zhao - Sun Microsystems - Beijing China 2543fcf3ce44SJohn Forte mutex_init(&icmd.cmd_mutex, NULL, MUTEX_DRIVER, NULL); 2544fcf3ce44SJohn Forte cv_init(&icmd.cmd_completion, NULL, CV_DRIVER, NULL); 2545fcf3ce44SJohn Forte /* 2546fcf3ce44SJohn Forte * If we received an IO and we are not in the 2547fcf3ce44SJohn Forte * LOGGED_IN state we are in the process of 2548fcf3ce44SJohn Forte * failing. Just respond that we are BUSY. 2549fcf3ce44SJohn Forte */ 2550fcf3ce44SJohn Forte mutex_enter(&isp->sess_state_mutex); 2551fcf3ce44SJohn Forte if (!ISCSI_SESS_STATE_FULL_FEATURE(isp->sess_state)) { 2552fcf3ce44SJohn Forte /* We aren't connected to the target fake success */ 2553fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 25542b79d384Sbing zhao - Sun Microsystems - Beijing China 25552b79d384Sbing zhao - Sun Microsystems - Beijing China if (level == RESET_LUN) { 25562b79d384Sbing zhao - Sun Microsystems - Beijing China rw_enter(&isp->sess_lun_list_rwlock, RW_WRITER); 25572b79d384Sbing zhao - Sun Microsystems - Beijing China ilp->lun_state &= ~ISCSI_LUN_STATE_BUSY; 25582b79d384Sbing zhao - Sun Microsystems - Beijing China rw_exit(&isp->sess_lun_list_rwlock); 25592b79d384Sbing zhao - Sun Microsystems - Beijing China } else { 25602b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&isp->sess_reset_mutex); 25612b79d384Sbing zhao - Sun Microsystems - Beijing China isp->sess_reset_in_progress = B_FALSE; 25622b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_reset_mutex); 25632b79d384Sbing zhao - Sun Microsystems - Beijing China } 25642b79d384Sbing zhao - Sun Microsystems - Beijing China 2565fcf3ce44SJohn Forte return (ISCSI_STATUS_SUCCESS); 2566fcf3ce44SJohn Forte } 2567fcf3ce44SJohn Forte 2568fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 2569fcf3ce44SJohn Forte iscsi_cmd_state_machine(&icmd, ISCSI_CMD_EVENT_E1, isp); 2570fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 2571fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 2572fcf3ce44SJohn Forte 2573fcf3ce44SJohn Forte /* stall until completed */ 2574fcf3ce44SJohn Forte mutex_enter(&icmd.cmd_mutex); 2575fcf3ce44SJohn Forte while (icmd.cmd_completed == B_FALSE) { 2576fcf3ce44SJohn Forte cv_wait(&icmd.cmd_completion, &icmd.cmd_mutex); 2577fcf3ce44SJohn Forte } 2578fcf3ce44SJohn Forte mutex_exit(&icmd.cmd_mutex); 2579fcf3ce44SJohn Forte 2580fcf3ce44SJohn Forte /* copy rval */ 2581fcf3ce44SJohn Forte rval = icmd.cmd_result; 2582fcf3ce44SJohn Forte 2583fcf3ce44SJohn Forte if (rval == ISCSI_STATUS_SUCCESS) { 2584fcf3ce44SJohn Forte /* 2585fcf3ce44SJohn Forte * Reset was successful. We need to flush 2586fcf3ce44SJohn Forte * all active IOs. 2587fcf3ce44SJohn Forte */ 2588fcf3ce44SJohn Forte rw_enter(&isp->sess_conn_list_rwlock, RW_READER); 2589fcf3ce44SJohn Forte icp = isp->sess_conn_list; 2590fcf3ce44SJohn Forte while (icp != NULL) { 2591fcf3ce44SJohn Forte iscsi_cmd_t *t_icmdp = NULL; 25922b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_t *next_icmdp = NULL; 2593fcf3ce44SJohn Forte 2594fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 2595fcf3ce44SJohn Forte t_icmdp = icp->conn_queue_active.head; 2596fcf3ce44SJohn Forte while (t_icmdp != NULL) { 25972b79d384Sbing zhao - Sun Microsystems - Beijing China next_icmdp = t_icmdp->cmd_next; 25982b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&t_icmdp->cmd_mutex); 25992b79d384Sbing zhao - Sun Microsystems - Beijing China if (!(t_icmdp->cmd_misc_flags & 26002b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_MISCFLAG_SENT)) { 26012b79d384Sbing zhao - Sun Microsystems - Beijing China /* 26022b79d384Sbing zhao - Sun Microsystems - Beijing China * Although this command is in the 26032b79d384Sbing zhao - Sun Microsystems - Beijing China * active queue, it has not been sent. 26042b79d384Sbing zhao - Sun Microsystems - Beijing China * Skip it. 26052b79d384Sbing zhao - Sun Microsystems - Beijing China */ 26062b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 26072b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp = next_icmdp; 26082b79d384Sbing zhao - Sun Microsystems - Beijing China continue; 26092b79d384Sbing zhao - Sun Microsystems - Beijing China } 26102b79d384Sbing zhao - Sun Microsystems - Beijing China if (level == RESET_LUN) { 26112b79d384Sbing zhao - Sun Microsystems - Beijing China if (icmd.cmd_lun == NULL || 26122b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_lun == NULL || 26132b79d384Sbing zhao - Sun Microsystems - Beijing China (icmd.cmd_lun->lun_num != 26142b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_lun->lun_num)) { 26152b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 26162b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp = next_icmdp; 26172b79d384Sbing zhao - Sun Microsystems - Beijing China continue; 26182b79d384Sbing zhao - Sun Microsystems - Beijing China } 26192b79d384Sbing zhao - Sun Microsystems - Beijing China } 26202b79d384Sbing zhao - Sun Microsystems - Beijing China 26212b79d384Sbing zhao - Sun Microsystems - Beijing China if (icmd.cmd_sn == t_icmdp->cmd_sn) { 26222b79d384Sbing zhao - Sun Microsystems - Beijing China /* 26232b79d384Sbing zhao - Sun Microsystems - Beijing China * This command may be replied with 26242b79d384Sbing zhao - Sun Microsystems - Beijing China * UA sense key later. So currently 26252b79d384Sbing zhao - Sun Microsystems - Beijing China * it is not a suitable time to flush 26262b79d384Sbing zhao - Sun Microsystems - Beijing China * it. Mark its flag with FLUSH. There 26272b79d384Sbing zhao - Sun Microsystems - Beijing China * is no harm to keep it for a while. 26282b79d384Sbing zhao - Sun Microsystems - Beijing China */ 26292b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_misc_flags |= 26302b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_MISCFLAG_FLUSH; 26312b79d384Sbing zhao - Sun Microsystems - Beijing China if (t_icmdp->cmd_type == 26322b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_TYPE_SCSI) { 26332b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_un.scsi.pkt_stat |= 26342b79d384Sbing zhao - Sun Microsystems - Beijing China STAT_BUS_RESET; 26352b79d384Sbing zhao - Sun Microsystems - Beijing China } 26362b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 26372b79d384Sbing zhao - Sun Microsystems - Beijing China } else if ((icmd.cmd_sn > t_icmdp->cmd_sn) || 26382b79d384Sbing zhao - Sun Microsystems - Beijing China ((t_icmdp->cmd_sn - icmd.cmd_sn) > 26392b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_SN_WRAP)) { 26402b79d384Sbing zhao - Sun Microsystems - Beijing China /* 26412b79d384Sbing zhao - Sun Microsystems - Beijing China * This reset request must act on all 26422b79d384Sbing zhao - Sun Microsystems - Beijing China * the commnds from the same session 26432b79d384Sbing zhao - Sun Microsystems - Beijing China * having a CmdSN lower than the task 26442b79d384Sbing zhao - Sun Microsystems - Beijing China * mangement CmdSN. So flush these 26452b79d384Sbing zhao - Sun Microsystems - Beijing China * commands here. 26462b79d384Sbing zhao - Sun Microsystems - Beijing China */ 26472b79d384Sbing zhao - Sun Microsystems - Beijing China if (t_icmdp->cmd_type == 26482b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_TYPE_SCSI) { 26492b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_un.scsi.pkt_stat |= 26502b79d384Sbing zhao - Sun Microsystems - Beijing China STAT_BUS_RESET; 26512b79d384Sbing zhao - Sun Microsystems - Beijing China } 26522b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 26532b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_state_machine(t_icmdp, 26542b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_EVENT_E7, isp); 26552b79d384Sbing zhao - Sun Microsystems - Beijing China } else { 26562b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 26572b79d384Sbing zhao - Sun Microsystems - Beijing China } 26582b79d384Sbing zhao - Sun Microsystems - Beijing China 26592b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp = next_icmdp; 2660fcf3ce44SJohn Forte } 2661fcf3ce44SJohn Forte 2662fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 2663fcf3ce44SJohn Forte icp = icp->conn_next; 2664fcf3ce44SJohn Forte } 2665fcf3ce44SJohn Forte rw_exit(&isp->sess_conn_list_rwlock); 2666fcf3ce44SJohn Forte } 2667fcf3ce44SJohn Forte 2668fcf3ce44SJohn Forte /* clean up */ 2669fcf3ce44SJohn Forte cv_destroy(&icmd.cmd_completion); 2670fcf3ce44SJohn Forte mutex_destroy(&icmd.cmd_mutex); 2671fcf3ce44SJohn Forte 26722b79d384Sbing zhao - Sun Microsystems - Beijing China if (level == RESET_LUN) { 26732b79d384Sbing zhao - Sun Microsystems - Beijing China rw_enter(&isp->sess_lun_list_rwlock, RW_WRITER); 26742b79d384Sbing zhao - Sun Microsystems - Beijing China ilp->lun_state &= ~ISCSI_LUN_STATE_BUSY; 26752b79d384Sbing zhao - Sun Microsystems - Beijing China rw_exit(&isp->sess_lun_list_rwlock); 26762b79d384Sbing zhao - Sun Microsystems - Beijing China } else { 26772b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&isp->sess_reset_mutex); 26782b79d384Sbing zhao - Sun Microsystems - Beijing China isp->sess_reset_in_progress = B_FALSE; 26792b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&isp->sess_reset_mutex); 26802b79d384Sbing zhao - Sun Microsystems - Beijing China } 26812b79d384Sbing zhao - Sun Microsystems - Beijing China 2682fcf3ce44SJohn Forte return (rval); 2683fcf3ce44SJohn Forte } 2684fcf3ce44SJohn Forte 268530e7468fSPeter Dunlap /* 268692adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * iscsi_logout_start - task handler for deferred logout 268792adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * Acquire a hold before call, released in iscsi_handle_logout 268830e7468fSPeter Dunlap */ 268930e7468fSPeter Dunlap static void 269030e7468fSPeter Dunlap iscsi_logout_start(void *arg) 269130e7468fSPeter Dunlap { 269230e7468fSPeter Dunlap iscsi_task_t *itp = (iscsi_task_t *)arg; 269330e7468fSPeter Dunlap iscsi_conn_t *icp; 269430e7468fSPeter Dunlap 269530e7468fSPeter Dunlap icp = (iscsi_conn_t *)itp->t_arg; 269630e7468fSPeter Dunlap 269730e7468fSPeter Dunlap mutex_enter(&icp->conn_state_mutex); 269830e7468fSPeter Dunlap (void) iscsi_handle_logout(icp); 269930e7468fSPeter Dunlap mutex_exit(&icp->conn_state_mutex); 270030e7468fSPeter Dunlap } 2701fcf3ce44SJohn Forte 2702fcf3ce44SJohn Forte /* 2703fcf3ce44SJohn Forte * iscsi_handle_logout - This function will issue a logout for 2704fcf3ce44SJohn Forte * the session from a specific connection. 270592adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * Acquire idm_conn_hold before call. Released internally. 2706fcf3ce44SJohn Forte */ 2707fcf3ce44SJohn Forte iscsi_status_t 2708fcf3ce44SJohn Forte iscsi_handle_logout(iscsi_conn_t *icp) 2709fcf3ce44SJohn Forte { 2710fcf3ce44SJohn Forte iscsi_sess_t *isp; 271130e7468fSPeter Dunlap idm_conn_t *ic; 2712fcf3ce44SJohn Forte iscsi_cmd_t *icmdp; 2713fcf3ce44SJohn Forte int rval; 2714fcf3ce44SJohn Forte 2715fcf3ce44SJohn Forte ASSERT(icp != NULL); 2716fcf3ce44SJohn Forte isp = icp->conn_sess; 271730e7468fSPeter Dunlap ic = icp->conn_ic; 2718fcf3ce44SJohn Forte ASSERT(isp != NULL); 2719fcf3ce44SJohn Forte ASSERT(isp->sess_hba != NULL); 272030e7468fSPeter Dunlap ASSERT(mutex_owned(&icp->conn_state_mutex)); 272130e7468fSPeter Dunlap 272230e7468fSPeter Dunlap /* 272392adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * If the connection has already gone down (e.g. if the transport 272492adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * failed between when this LOGOUT was generated and now) then we 272592adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * can and must skip sending the LOGOUT. Check the same condition 272692adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States * we use below to determine that connection has "settled". 272730e7468fSPeter Dunlap */ 272892adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States if ((icp->conn_state == ISCSI_CONN_STATE_FREE) || 272992adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States (icp->conn_state == ISCSI_CONN_STATE_FAILED) || 273092adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States (icp->conn_state == ISCSI_CONN_STATE_POLLING)) { 273192adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States idm_conn_rele(ic); 273292adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States return (0); 273392adbba7SPeter Cudhea - Sun Microsystems - Burlington, MA United States } 2734fcf3ce44SJohn Forte 2735fcf3ce44SJohn Forte icmdp = iscsi_cmd_alloc(icp, KM_SLEEP); 2736fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2737fcf3ce44SJohn Forte icmdp->cmd_type = ISCSI_CMD_TYPE_LOGOUT; 2738fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_SUCCESS; 2739fcf3ce44SJohn Forte icmdp->cmd_completed = B_FALSE; 2740fcf3ce44SJohn Forte 2741fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 2742fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E1, isp); 2743fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 2744fcf3ce44SJohn Forte 2745fcf3ce44SJohn Forte /* 2746fcf3ce44SJohn Forte * release connection state mutex to avoid a deadlock. This 2747fcf3ce44SJohn Forte * function is called from within the connection state 2748fcf3ce44SJohn Forte * machine with the lock held. When the logout response is 2749fcf3ce44SJohn Forte * received another call to the connection state machine 2750fcf3ce44SJohn Forte * occurs which causes the deadlock 2751fcf3ce44SJohn Forte */ 2752fcf3ce44SJohn Forte mutex_exit(&icp->conn_state_mutex); 2753fcf3ce44SJohn Forte 2754fcf3ce44SJohn Forte /* stall until completed */ 2755fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 2756fcf3ce44SJohn Forte while (icmdp->cmd_completed == B_FALSE) { 2757fcf3ce44SJohn Forte cv_wait(&icmdp->cmd_completion, &icmdp->cmd_mutex); 2758fcf3ce44SJohn Forte } 2759fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 2760fcf3ce44SJohn Forte mutex_enter(&icp->conn_state_mutex); 2761fcf3ce44SJohn Forte 2762fcf3ce44SJohn Forte /* copy rval */ 2763fcf3ce44SJohn Forte rval = icmdp->cmd_result; 2764fcf3ce44SJohn Forte 2765fcf3ce44SJohn Forte /* clean up */ 2766fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 2767fcf3ce44SJohn Forte 276830e7468fSPeter Dunlap if (rval != 0) { 276930e7468fSPeter Dunlap /* If the logout failed then drop the connection */ 277030e7468fSPeter Dunlap idm_ini_conn_disconnect(icp->conn_ic); 277130e7468fSPeter Dunlap } 277230e7468fSPeter Dunlap 277330e7468fSPeter Dunlap /* stall until connection settles */ 277430e7468fSPeter Dunlap while ((icp->conn_state != ISCSI_CONN_STATE_FREE) && 277530e7468fSPeter Dunlap (icp->conn_state != ISCSI_CONN_STATE_FAILED) && 277630e7468fSPeter Dunlap (icp->conn_state != ISCSI_CONN_STATE_POLLING)) { 277730e7468fSPeter Dunlap /* wait for transition */ 277830e7468fSPeter Dunlap cv_wait(&icp->conn_state_change, &icp->conn_state_mutex); 277930e7468fSPeter Dunlap } 278030e7468fSPeter Dunlap 278130e7468fSPeter Dunlap idm_conn_rele(ic); 278230e7468fSPeter Dunlap 278330e7468fSPeter Dunlap /* 278430e7468fSPeter Dunlap * Return value reflects whether the logout command completed -- 278530e7468fSPeter Dunlap * regardless of the return value the connection is closed and 278630e7468fSPeter Dunlap * ready for reconnection. 278730e7468fSPeter Dunlap */ 2788fcf3ce44SJohn Forte return (rval); 2789fcf3ce44SJohn Forte } 2790fcf3ce44SJohn Forte 279130e7468fSPeter Dunlap 2792fcf3ce44SJohn Forte /* 2793fcf3ce44SJohn Forte * iscsi_handle_text - main control function for iSCSI text requests. This 2794fcf3ce44SJohn Forte * function handles allocating the command, sending initial text request, and 2795fcf3ce44SJohn Forte * handling long response sequence. 2796fcf3ce44SJohn Forte * If a data overflow condition occurs, iscsi_handle_text continues to 2797fcf3ce44SJohn Forte * receive responses until the all data has been recieved. This allows 2798fcf3ce44SJohn Forte * the full data length to be returned to the caller. 2799fcf3ce44SJohn Forte */ 2800fcf3ce44SJohn Forte iscsi_status_t 2801fcf3ce44SJohn Forte iscsi_handle_text(iscsi_conn_t *icp, char *buf, uint32_t buf_len, 2802fcf3ce44SJohn Forte uint32_t data_len, uint32_t *rx_data_len) 2803fcf3ce44SJohn Forte { 2804fcf3ce44SJohn Forte iscsi_sess_t *isp; 2805fcf3ce44SJohn Forte iscsi_cmd_t *icmdp; 2806fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2807fcf3ce44SJohn Forte 2808fcf3ce44SJohn Forte ASSERT(icp != NULL); 2809fcf3ce44SJohn Forte ASSERT(buf != NULL); 2810fcf3ce44SJohn Forte ASSERT(rx_data_len != NULL); 2811fcf3ce44SJohn Forte 2812fcf3ce44SJohn Forte isp = icp->conn_sess; 2813fcf3ce44SJohn Forte ASSERT(isp != NULL); 2814fcf3ce44SJohn Forte 2815fcf3ce44SJohn Forte /* 2816fcf3ce44SJohn Forte * Ensure data for text request command is not greater 2817fcf3ce44SJohn Forte * than the negotiated maximum receive data seqment length. 2818fcf3ce44SJohn Forte * 2819fcf3ce44SJohn Forte * Although iSCSI allows for long text requests (multiple 2820fcf3ce44SJohn Forte * pdus), this function places a restriction on text 2821fcf3ce44SJohn Forte * requests to ensure it is handled by a single PDU. 2822fcf3ce44SJohn Forte */ 2823fcf3ce44SJohn Forte if (data_len > icp->conn_params.max_xmit_data_seg_len) { 2824fcf3ce44SJohn Forte return (ISCSI_STATUS_CMD_FAILED); 2825fcf3ce44SJohn Forte } 2826fcf3ce44SJohn Forte 2827fcf3ce44SJohn Forte icmdp = iscsi_cmd_alloc(icp, KM_SLEEP); 2828fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2829fcf3ce44SJohn Forte 2830fcf3ce44SJohn Forte icmdp->cmd_type = ISCSI_CMD_TYPE_TEXT; 2831fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_SUCCESS; 2832d233de7eSJack Meng icmdp->cmd_misc_flags &= ~ISCSI_CMD_MISCFLAG_FREE; 2833fcf3ce44SJohn Forte icmdp->cmd_completed = B_FALSE; 2834fcf3ce44SJohn Forte 2835fcf3ce44SJohn Forte icmdp->cmd_un.text.buf = buf; 2836fcf3ce44SJohn Forte icmdp->cmd_un.text.buf_len = buf_len; 2837fcf3ce44SJohn Forte icmdp->cmd_un.text.offset = 0; 2838fcf3ce44SJohn Forte icmdp->cmd_un.text.data_len = data_len; 2839fcf3ce44SJohn Forte icmdp->cmd_un.text.total_rx_len = 0; 2840fcf3ce44SJohn Forte icmdp->cmd_un.text.ttt = ISCSI_RSVD_TASK_TAG; 2841fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_INITIAL_REQ; 2842fcf3ce44SJohn Forte 2843fcf3ce44SJohn Forte long_text_response: 2844fcf3ce44SJohn Forte mutex_enter(&isp->sess_state_mutex); 2845fcf3ce44SJohn Forte if (!ISCSI_SESS_STATE_FULL_FEATURE(isp->sess_state)) { 2846fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 2847fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 2848fcf3ce44SJohn Forte return (ISCSI_STATUS_NO_CONN_LOGGED_IN); 2849fcf3ce44SJohn Forte } 2850fcf3ce44SJohn Forte 2851fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 2852fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E1, isp); 2853fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 2854fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 2855fcf3ce44SJohn Forte 2856fcf3ce44SJohn Forte /* stall until completed */ 2857fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 2858fcf3ce44SJohn Forte while (icmdp->cmd_completed == B_FALSE) { 2859fcf3ce44SJohn Forte cv_wait(&icmdp->cmd_completion, &icmdp->cmd_mutex); 2860fcf3ce44SJohn Forte } 2861fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 2862fcf3ce44SJohn Forte 2863fcf3ce44SJohn Forte /* 2864fcf3ce44SJohn Forte * check if error occured. If data overflow occured, continue on 2865fcf3ce44SJohn Forte * to ensure we get all data so that the full data length can be 2866fcf3ce44SJohn Forte * returned to the user 2867fcf3ce44SJohn Forte */ 2868fcf3ce44SJohn Forte if ((icmdp->cmd_result != ISCSI_STATUS_SUCCESS) && 2869fcf3ce44SJohn Forte (icmdp->cmd_result != ISCSI_STATUS_DATA_OVERFLOW)) { 2870fcf3ce44SJohn Forte cmn_err(CE_NOTE, "iscsi: SendTarget discovery failed (%d)", 2871fcf3ce44SJohn Forte icmdp->cmd_result); 2872fcf3ce44SJohn Forte rval = icmdp->cmd_result; 2873fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 2874fcf3ce44SJohn Forte return (rval); 2875fcf3ce44SJohn Forte } 2876fcf3ce44SJohn Forte 2877fcf3ce44SJohn Forte /* check if this was a partial text PDU */ 2878fcf3ce44SJohn Forte if (icmdp->cmd_un.text.stage != ISCSI_CMD_TEXT_FINAL_RSP) { 2879fcf3ce44SJohn Forte /* 2880fcf3ce44SJohn Forte * If a paritial text rexponse received, send an empty 2881fcf3ce44SJohn Forte * text request. This follows the behaviour specified 2882fcf3ce44SJohn Forte * in RFC3720 regarding long text responses. 2883fcf3ce44SJohn Forte */ 2884d233de7eSJack Meng icmdp->cmd_misc_flags &= ~ISCSI_CMD_MISCFLAG_FREE; 2885fcf3ce44SJohn Forte icmdp->cmd_completed = B_FALSE; 2886fcf3ce44SJohn Forte icmdp->cmd_un.text.data_len = 0; 2887fcf3ce44SJohn Forte icmdp->cmd_un.text.stage = ISCSI_CMD_TEXT_CONTINUATION; 2888fcf3ce44SJohn Forte goto long_text_response; 2889fcf3ce44SJohn Forte } 2890fcf3ce44SJohn Forte 2891fcf3ce44SJohn Forte /* 2892fcf3ce44SJohn Forte * set total received data length. If data overflow this would be 2893fcf3ce44SJohn Forte * amount of data that would have been received if buffer large 2894fcf3ce44SJohn Forte * enough. 2895fcf3ce44SJohn Forte */ 2896fcf3ce44SJohn Forte *rx_data_len = icmdp->cmd_un.text.total_rx_len; 2897fcf3ce44SJohn Forte 2898fcf3ce44SJohn Forte /* copy rval */ 2899fcf3ce44SJohn Forte rval = icmdp->cmd_result; 2900fcf3ce44SJohn Forte 2901fcf3ce44SJohn Forte /* clean up */ 2902fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 2903fcf3ce44SJohn Forte 2904fcf3ce44SJohn Forte return (rval); 2905fcf3ce44SJohn Forte } 2906fcf3ce44SJohn Forte 2907fcf3ce44SJohn Forte /* 2908fcf3ce44SJohn Forte * iscsi_handle_passthru - This function is used to send a uscsi_cmd 2909fcf3ce44SJohn Forte * to a specific target lun. This routine is used for internal purposes 2910fcf3ce44SJohn Forte * during enumeration and via the ISCSI_USCSICMD IOCTL. We restrict 2911fcf3ce44SJohn Forte * the CDBs that can be issued to a target/lun to INQUIRY, REPORT_LUNS, 2912fcf3ce44SJohn Forte * and READ_CAPACITY for security purposes. 2913fcf3ce44SJohn Forte * 2914fcf3ce44SJohn Forte * The logic here is broken into three phases. 2915fcf3ce44SJohn Forte * 1) Allocate and initialize a pkt/icmdp 2916fcf3ce44SJohn Forte * 2) Send the pkt/icmdp 2917fcf3ce44SJohn Forte * 3) cv_wait for completion 2918fcf3ce44SJohn Forte */ 2919fcf3ce44SJohn Forte iscsi_status_t 2920fcf3ce44SJohn Forte iscsi_handle_passthru(iscsi_sess_t *isp, uint16_t lun, struct uscsi_cmd *ucmdp) 2921fcf3ce44SJohn Forte { 2922fcf3ce44SJohn Forte iscsi_status_t rval = ISCSI_STATUS_SUCCESS; 2923fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 2924fcf3ce44SJohn Forte struct scsi_pkt *pkt = NULL; 2925fcf3ce44SJohn Forte struct buf *bp = NULL; 2926fcf3ce44SJohn Forte struct scsi_arq_status *arqstat = NULL; 2927fcf3ce44SJohn Forte int rqlen = SENSE_LENGTH; 2928fcf3ce44SJohn Forte 2929fcf3ce44SJohn Forte ASSERT(isp != NULL); 2930fcf3ce44SJohn Forte ASSERT(ucmdp != NULL); 2931fcf3ce44SJohn Forte 2932fcf3ce44SJohn Forte /* 2933fcf3ce44SJohn Forte * If the caller didn't provide a sense buffer we need 2934fcf3ce44SJohn Forte * to allocation one to get the scsi status. 2935fcf3ce44SJohn Forte */ 2936fcf3ce44SJohn Forte if (ucmdp->uscsi_rqlen > SENSE_LENGTH) { 2937fcf3ce44SJohn Forte rqlen = ucmdp->uscsi_rqlen; 2938fcf3ce44SJohn Forte } 2939fcf3ce44SJohn Forte 2940fcf3ce44SJohn Forte /* 2941fcf3ce44SJohn Forte * Step 1. Setup structs - KM_SLEEP will always succeed 2942fcf3ce44SJohn Forte */ 2943fcf3ce44SJohn Forte bp = kmem_zalloc(sizeof (struct buf), KM_SLEEP); 2944fcf3ce44SJohn Forte ASSERT(bp != NULL); 2945fcf3ce44SJohn Forte pkt = kmem_zalloc(sizeof (struct scsi_pkt), KM_SLEEP); 2946fcf3ce44SJohn Forte ASSERT(pkt != NULL); 2947fcf3ce44SJohn Forte icmdp = iscsi_cmd_alloc(NULL, KM_SLEEP); 2948fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 2949fcf3ce44SJohn Forte 2950fcf3ce44SJohn Forte /* setup bp structure */ 2951fcf3ce44SJohn Forte bp->b_flags = B_READ; 2952fcf3ce44SJohn Forte bp->b_bcount = ucmdp->uscsi_buflen; 2953fcf3ce44SJohn Forte bp->b_un.b_addr = ucmdp->uscsi_bufaddr; 2954fcf3ce44SJohn Forte 2955fcf3ce44SJohn Forte /* setup scsi_pkt structure */ 2956fcf3ce44SJohn Forte pkt->pkt_ha_private = icmdp; 2957fcf3ce44SJohn Forte pkt->pkt_scbp = kmem_zalloc(rqlen, KM_SLEEP); 2958fcf3ce44SJohn Forte pkt->pkt_cdbp = kmem_zalloc(ucmdp->uscsi_cdblen, KM_SLEEP); 2959fcf3ce44SJohn Forte /* callback routine for passthru, will wake cv_wait */ 2960fcf3ce44SJohn Forte pkt->pkt_comp = iscsi_handle_passthru_callback; 2961fcf3ce44SJohn Forte pkt->pkt_time = ucmdp->uscsi_timeout; 2962fcf3ce44SJohn Forte 2963fcf3ce44SJohn Forte /* setup iscsi_cmd structure */ 2964fcf3ce44SJohn Forte icmdp->cmd_lun = NULL; 2965fcf3ce44SJohn Forte icmdp->cmd_type = ISCSI_CMD_TYPE_SCSI; 2966fcf3ce44SJohn Forte icmdp->cmd_un.scsi.lun = lun; 2967fcf3ce44SJohn Forte icmdp->cmd_un.scsi.pkt = pkt; 2968fcf3ce44SJohn Forte icmdp->cmd_un.scsi.bp = bp; 2969fcf3ce44SJohn Forte bcopy(ucmdp->uscsi_cdb, pkt->pkt_cdbp, ucmdp->uscsi_cdblen); 2970fcf3ce44SJohn Forte icmdp->cmd_un.scsi.cmdlen = ucmdp->uscsi_cdblen; 2971fcf3ce44SJohn Forte icmdp->cmd_un.scsi.statuslen = rqlen; 2972fcf3ce44SJohn Forte icmdp->cmd_crc_error_seen = B_FALSE; 2973fcf3ce44SJohn Forte icmdp->cmd_completed = B_FALSE; 2974fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_SUCCESS; 2975fcf3ce44SJohn Forte 2976fcf3ce44SJohn Forte /* 2977fcf3ce44SJohn Forte * Step 2. Push IO onto pending queue. If we aren't in 2978fcf3ce44SJohn Forte * FULL_FEATURE we need to fail the IO. 2979fcf3ce44SJohn Forte */ 2980fcf3ce44SJohn Forte mutex_enter(&isp->sess_state_mutex); 2981fcf3ce44SJohn Forte if (!ISCSI_SESS_STATE_FULL_FEATURE(isp->sess_state)) { 2982fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 2983fcf3ce44SJohn Forte 2984fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 2985fcf3ce44SJohn Forte kmem_free(pkt->pkt_cdbp, ucmdp->uscsi_cdblen); 2986fcf3ce44SJohn Forte kmem_free(pkt->pkt_scbp, rqlen); 2987fcf3ce44SJohn Forte kmem_free(pkt, sizeof (struct scsi_pkt)); 2988fcf3ce44SJohn Forte kmem_free(bp, sizeof (struct buf)); 2989fcf3ce44SJohn Forte 2990fcf3ce44SJohn Forte return (ISCSI_STATUS_CMD_FAILED); 2991fcf3ce44SJohn Forte } 2992fcf3ce44SJohn Forte 2993fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 2994fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E1, isp); 2995fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 2996fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 2997fcf3ce44SJohn Forte 2998fcf3ce44SJohn Forte /* 2999fcf3ce44SJohn Forte * Step 3. Wait on cv_wait for completion routine 3000fcf3ce44SJohn Forte */ 3001fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 3002fcf3ce44SJohn Forte while (icmdp->cmd_completed == B_FALSE) { 3003fcf3ce44SJohn Forte cv_wait(&icmdp->cmd_completion, &icmdp->cmd_mutex); 3004fcf3ce44SJohn Forte } 3005fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 3006fcf3ce44SJohn Forte 3007fcf3ce44SJohn Forte /* copy rval */ 3008fcf3ce44SJohn Forte rval = icmdp->cmd_result; 3009fcf3ce44SJohn Forte 3010fcf3ce44SJohn Forte ucmdp->uscsi_resid = pkt->pkt_resid; 3011fcf3ce44SJohn Forte 3012fcf3ce44SJohn Forte /* update scsi status */ 3013fcf3ce44SJohn Forte arqstat = (struct scsi_arq_status *)pkt->pkt_scbp; 3014fcf3ce44SJohn Forte ucmdp->uscsi_status = ((char *)&arqstat->sts_status)[0]; 3015fcf3ce44SJohn Forte 3016fcf3ce44SJohn Forte /* copy request sense buffers if caller gave space */ 3017fcf3ce44SJohn Forte if ((ucmdp->uscsi_rqlen > 0) && 3018fcf3ce44SJohn Forte (ucmdp->uscsi_rqbuf != NULL)) { 3019fcf3ce44SJohn Forte bcopy(arqstat, ucmdp->uscsi_rqbuf, 3020fcf3ce44SJohn Forte MIN(sizeof (struct scsi_arq_status), rqlen)); 3021fcf3ce44SJohn Forte } 3022fcf3ce44SJohn Forte 3023fcf3ce44SJohn Forte /* clean up */ 3024fcf3ce44SJohn Forte iscsi_cmd_free(icmdp); 3025fcf3ce44SJohn Forte kmem_free(pkt->pkt_cdbp, ucmdp->uscsi_cdblen); 3026fcf3ce44SJohn Forte kmem_free(pkt->pkt_scbp, rqlen); 3027fcf3ce44SJohn Forte kmem_free(pkt, sizeof (struct scsi_pkt)); 3028fcf3ce44SJohn Forte kmem_free(bp, sizeof (struct buf)); 3029fcf3ce44SJohn Forte 3030fcf3ce44SJohn Forte return (rval); 3031fcf3ce44SJohn Forte } 3032fcf3ce44SJohn Forte 3033fcf3ce44SJohn Forte 3034fcf3ce44SJohn Forte /* 3035fcf3ce44SJohn Forte * iscsi_handle_passthru_callback - 3036fcf3ce44SJohn Forte * 3037fcf3ce44SJohn Forte */ 3038fcf3ce44SJohn Forte static void 3039fcf3ce44SJohn Forte iscsi_handle_passthru_callback(struct scsi_pkt *pkt) 3040fcf3ce44SJohn Forte { 3041fcf3ce44SJohn Forte iscsi_cmd_t *icmdp = NULL; 3042fcf3ce44SJohn Forte 3043fcf3ce44SJohn Forte ASSERT(pkt != NULL); 3044fcf3ce44SJohn Forte icmdp = (iscsi_cmd_t *)pkt->pkt_ha_private; 3045fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 3046fcf3ce44SJohn Forte 3047fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 3048fcf3ce44SJohn Forte icmdp->cmd_completed = B_TRUE; 3049fcf3ce44SJohn Forte icmdp->cmd_result = ISCSI_STATUS_SUCCESS; 3050fcf3ce44SJohn Forte cv_broadcast(&icmdp->cmd_completion); 3051fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 3052fcf3ce44SJohn Forte 3053fcf3ce44SJohn Forte } 3054fcf3ce44SJohn Forte 305530e7468fSPeter Dunlap /* 305630e7468fSPeter Dunlap * IDM callbacks 305730e7468fSPeter Dunlap */ 305830e7468fSPeter Dunlap void 305930e7468fSPeter Dunlap iscsi_build_hdr(idm_task_t *idm_task, idm_pdu_t *pdu, uint8_t opcode) 306030e7468fSPeter Dunlap { 306130e7468fSPeter Dunlap iscsi_cmd_t *icmdp = idm_task->idt_private; 306230e7468fSPeter Dunlap iscsi_conn_t *icp = icmdp->cmd_conn; 306330e7468fSPeter Dunlap iscsi_data_hdr_t *ihp = (iscsi_data_hdr_t *)pdu->isp_hdr; 306430e7468fSPeter Dunlap 306530e7468fSPeter Dunlap mutex_enter(&icmdp->cmd_mutex); 306630e7468fSPeter Dunlap if (opcode == ISCSI_OP_SCSI_DATA) { 306730e7468fSPeter Dunlap uint32_t data_sn; 306830e7468fSPeter Dunlap uint32_t lun; 306930e7468fSPeter Dunlap icmdp = idm_task->idt_private; 307030e7468fSPeter Dunlap icp = icmdp->cmd_conn; 307130e7468fSPeter Dunlap ihp->opcode = opcode; 307230e7468fSPeter Dunlap ihp->itt = icmdp->cmd_itt; 307330e7468fSPeter Dunlap ihp->ttt = idm_task->idt_r2t_ttt; 307430e7468fSPeter Dunlap ihp->expstatsn = htonl(icp->conn_expstatsn); 307530e7468fSPeter Dunlap icp->conn_laststatsn = icp->conn_expstatsn; 307630e7468fSPeter Dunlap data_sn = ntohl(ihp->datasn); 307730e7468fSPeter Dunlap data_sn++; 307830e7468fSPeter Dunlap lun = icmdp->cmd_un.scsi.lun; 307930e7468fSPeter Dunlap ISCSI_LUN_BYTE_COPY(ihp->lun, lun); 308030e7468fSPeter Dunlap /* CRM: upate_flow_control */ 308130e7468fSPeter Dunlap ISCSI_IO_LOG(CE_NOTE, "DEBUG: iscsi_build_hdr" 308230e7468fSPeter Dunlap "(ISCSI_OP_SCSI_DATA): task: %p icp: %p ic: %p itt: %x " 308330e7468fSPeter Dunlap "exp: %d data_sn: %d", (void *)idm_task, (void *)icp, 308430e7468fSPeter Dunlap (void *)icp->conn_ic, ihp->itt, icp->conn_expstatsn, 308530e7468fSPeter Dunlap data_sn); 308630e7468fSPeter Dunlap } else { 308730e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi_build_hdr: unprocessed build " 308830e7468fSPeter Dunlap "header opcode: %x", opcode); 308930e7468fSPeter Dunlap } 309030e7468fSPeter Dunlap mutex_exit(&icmdp->cmd_mutex); 309130e7468fSPeter Dunlap } 309230e7468fSPeter Dunlap 309330e7468fSPeter Dunlap static void 309430e7468fSPeter Dunlap iscsi_process_rsp_status(iscsi_sess_t *isp, iscsi_conn_t *icp, 309530e7468fSPeter Dunlap idm_status_t status) 309630e7468fSPeter Dunlap { 309730e7468fSPeter Dunlap switch (status) { 309830e7468fSPeter Dunlap case IDM_STATUS_SUCCESS: 309930e7468fSPeter Dunlap if ((isp->sess_state == ISCSI_SESS_STATE_IN_FLUSH) && 310030e7468fSPeter Dunlap (icp->conn_queue_active.count == 0)) { 310130e7468fSPeter Dunlap iscsi_drop_conn_cleanup(icp); 310230e7468fSPeter Dunlap } 310330e7468fSPeter Dunlap break; 310430e7468fSPeter Dunlap case IDM_STATUS_PROTOCOL_ERROR: 310530e7468fSPeter Dunlap KSTAT_INC_CONN_ERR_PROTOCOL(icp); 310630e7468fSPeter Dunlap iscsi_drop_conn_cleanup(icp); 310730e7468fSPeter Dunlap break; 310830e7468fSPeter Dunlap default: 310930e7468fSPeter Dunlap break; 311030e7468fSPeter Dunlap } 311130e7468fSPeter Dunlap } 311230e7468fSPeter Dunlap 311330e7468fSPeter Dunlap static void 311430e7468fSPeter Dunlap iscsi_drop_conn_cleanup(iscsi_conn_t *icp) { 311530e7468fSPeter Dunlap mutex_enter(&icp->conn_state_mutex); 311630e7468fSPeter Dunlap idm_ini_conn_disconnect(icp->conn_ic); 311730e7468fSPeter Dunlap mutex_exit(&icp->conn_state_mutex); 311830e7468fSPeter Dunlap } 311930e7468fSPeter Dunlap 312030e7468fSPeter Dunlap void 312130e7468fSPeter Dunlap iscsi_rx_error_pdu(idm_conn_t *ic, idm_pdu_t *pdu, idm_status_t status) 312230e7468fSPeter Dunlap { 312330e7468fSPeter Dunlap iscsi_conn_t *icp = (iscsi_conn_t *)ic->ic_handle; 312430e7468fSPeter Dunlap iscsi_sess_t *isp; 312530e7468fSPeter Dunlap 312630e7468fSPeter Dunlap ASSERT(icp != NULL); 312730e7468fSPeter Dunlap isp = icp->conn_sess; 312830e7468fSPeter Dunlap ASSERT(isp != NULL); 312930e7468fSPeter Dunlap iscsi_process_rsp_status(isp, icp, status); 313030e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 313130e7468fSPeter Dunlap } 313230e7468fSPeter Dunlap 313330e7468fSPeter Dunlap void 313430e7468fSPeter Dunlap iscsi_rx_misc_pdu(idm_conn_t *ic, idm_pdu_t *pdu) 313530e7468fSPeter Dunlap { 313630e7468fSPeter Dunlap iscsi_conn_t *icp; 313730e7468fSPeter Dunlap iscsi_hdr_t *ihp = (iscsi_hdr_t *)pdu->isp_hdr; 313830e7468fSPeter Dunlap iscsi_sess_t *isp; 313930e7468fSPeter Dunlap idm_status_t status; 314030e7468fSPeter Dunlap 314130e7468fSPeter Dunlap icp = ic->ic_handle; 314230e7468fSPeter Dunlap isp = icp->conn_sess; 314330e7468fSPeter Dunlap isp->sess_rx_lbolt = icp->conn_rx_lbolt = ddi_get_lbolt(); 314430e7468fSPeter Dunlap switch (ihp->opcode & ISCSI_OPCODE_MASK) { 314530e7468fSPeter Dunlap case ISCSI_OP_LOGIN_RSP: 314630e7468fSPeter Dunlap status = iscsi_rx_process_login_pdu(ic, pdu); 314730e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 314830e7468fSPeter Dunlap break; 314930e7468fSPeter Dunlap case ISCSI_OP_LOGOUT_RSP: 315030e7468fSPeter Dunlap status = iscsi_rx_process_logout_rsp(ic, pdu); 315130e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 315230e7468fSPeter Dunlap break; 315330e7468fSPeter Dunlap case ISCSI_OP_REJECT_MSG: 315430e7468fSPeter Dunlap status = iscsi_rx_process_reject_rsp(ic, pdu); 315530e7468fSPeter Dunlap break; 315630e7468fSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_RSP: 315730e7468fSPeter Dunlap status = iscsi_rx_process_task_mgt_rsp(ic, pdu); 315830e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 315930e7468fSPeter Dunlap break; 316030e7468fSPeter Dunlap case ISCSI_OP_NOOP_IN: 316130e7468fSPeter Dunlap status = iscsi_rx_process_nop(ic, pdu); 316230e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 316330e7468fSPeter Dunlap break; 316430e7468fSPeter Dunlap case ISCSI_OP_ASYNC_EVENT: 316530e7468fSPeter Dunlap status = iscsi_rx_process_async_rsp(ic, pdu); 316630e7468fSPeter Dunlap break; 316730e7468fSPeter Dunlap case ISCSI_OP_TEXT_RSP: 316830e7468fSPeter Dunlap status = iscsi_rx_process_text_rsp(ic, pdu); 316930e7468fSPeter Dunlap idm_pdu_complete(pdu, status); 317030e7468fSPeter Dunlap break; 317130e7468fSPeter Dunlap default: 317230e7468fSPeter Dunlap cmn_err(CE_WARN, "iscsi connection(%u) protocol error " 317330e7468fSPeter Dunlap "- received misc unsupported opcode 0x%02x", 317430e7468fSPeter Dunlap icp->conn_oid, ihp->opcode); 317530e7468fSPeter Dunlap status = IDM_STATUS_PROTOCOL_ERROR; 317630e7468fSPeter Dunlap break; 317730e7468fSPeter Dunlap } 317830e7468fSPeter Dunlap iscsi_process_rsp_status(isp, icp, status); 317930e7468fSPeter Dunlap } 318030e7468fSPeter Dunlap 3181fcf3ce44SJohn Forte /* 3182fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3183fcf3ce44SJohn Forte * | Beginning of completion routines | 3184fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3185fcf3ce44SJohn Forte */ 3186fcf3ce44SJohn Forte 3187fcf3ce44SJohn Forte /* 3188fcf3ce44SJohn Forte * iscsi_ic_thread - 3189fcf3ce44SJohn Forte */ 3190fcf3ce44SJohn Forte void 3191fcf3ce44SJohn Forte iscsi_ic_thread(iscsi_thread_t *thread, void *arg) 3192fcf3ce44SJohn Forte { 3193fcf3ce44SJohn Forte iscsi_sess_t *isp = (iscsi_sess_t *)arg; 3194fcf3ce44SJohn Forte int ret; 3195fcf3ce44SJohn Forte iscsi_queue_t q; 3196fcf3ce44SJohn Forte iscsi_cmd_t *icmdp; 3197fcf3ce44SJohn Forte iscsi_cmd_t *next_icmdp; 3198fcf3ce44SJohn Forte 3199fcf3ce44SJohn Forte ASSERT(isp != NULL); 3200fcf3ce44SJohn Forte ASSERT(thread != NULL); 3201fcf3ce44SJohn Forte ASSERT(thread->signature == SIG_ISCSI_THREAD); 3202fcf3ce44SJohn Forte 3203fcf3ce44SJohn Forte for (;;) { 3204fcf3ce44SJohn Forte 3205fcf3ce44SJohn Forte /* 3206fcf3ce44SJohn Forte * We wait till iodone or somebody else wakes us up. 3207fcf3ce44SJohn Forte */ 3208fcf3ce44SJohn Forte ret = iscsi_thread_wait(thread, -1); 3209fcf3ce44SJohn Forte 3210fcf3ce44SJohn Forte /* 3211fcf3ce44SJohn Forte * The value should never be negative since we never timeout. 3212fcf3ce44SJohn Forte */ 3213fcf3ce44SJohn Forte ASSERT(ret >= 0); 3214fcf3ce44SJohn Forte 3215fcf3ce44SJohn Forte q.count = 0; 3216fcf3ce44SJohn Forte q.head = NULL; 3217fcf3ce44SJohn Forte q.tail = NULL; 3218fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_completion.mutex); 3219fcf3ce44SJohn Forte icmdp = isp->sess_queue_completion.head; 3220fcf3ce44SJohn Forte while (icmdp != NULL) { 3221fcf3ce44SJohn Forte next_icmdp = icmdp->cmd_next; 3222fcf3ce44SJohn Forte mutex_enter(&icmdp->cmd_mutex); 3223fcf3ce44SJohn Forte /* 3224fcf3ce44SJohn Forte * check if the associated r2t/abort has finished 322530e7468fSPeter Dunlap * yet. If not, don't complete the command. 3226fcf3ce44SJohn Forte */ 3227fcf3ce44SJohn Forte if ((icmdp->cmd_un.scsi.r2t_icmdp == NULL) && 322830e7468fSPeter Dunlap (icmdp->cmd_un.scsi.abort_icmdp == NULL)) { 3229fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 3230fcf3ce44SJohn Forte (void) iscsi_dequeue_cmd(&isp-> 3231fcf3ce44SJohn Forte sess_queue_completion.head, 3232fcf3ce44SJohn Forte &isp->sess_queue_completion.tail, 3233fcf3ce44SJohn Forte icmdp); 3234fcf3ce44SJohn Forte --isp->sess_queue_completion.count; 3235fcf3ce44SJohn Forte iscsi_enqueue_cmd_head(&q.head, 3236fcf3ce44SJohn Forte &q.tail, icmdp); 323730e7468fSPeter Dunlap } else { 3238fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 323930e7468fSPeter Dunlap } 3240fcf3ce44SJohn Forte icmdp = next_icmdp; 3241fcf3ce44SJohn Forte } 3242fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_completion.mutex); 3243fcf3ce44SJohn Forte icmdp = q.head; 3244fcf3ce44SJohn Forte while (icmdp != NULL) { 3245fcf3ce44SJohn Forte next_icmdp = icmdp->cmd_next; 3246fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E8, isp); 3247fcf3ce44SJohn Forte icmdp = next_icmdp; 3248fcf3ce44SJohn Forte } 3249fcf3ce44SJohn Forte 3250fcf3ce44SJohn Forte if (ret > 0) 3251fcf3ce44SJohn Forte /* Somebody woke us up to work */ 3252fcf3ce44SJohn Forte continue; 3253fcf3ce44SJohn Forte else 3254fcf3ce44SJohn Forte /* 3255fcf3ce44SJohn Forte * Somebody woke us up to kill ourselves. We will 3256fcf3ce44SJohn Forte * make sure, however that the completion queue is 3257fcf3ce44SJohn Forte * empty before leaving. After we've done that it 3258fcf3ce44SJohn Forte * is the originator of the signal that has to make 3259fcf3ce44SJohn Forte * sure no other SCSI command is posted. 3260fcf3ce44SJohn Forte */ 3261fcf3ce44SJohn Forte break; 3262fcf3ce44SJohn Forte } 3263fcf3ce44SJohn Forte 3264fcf3ce44SJohn Forte } 3265fcf3ce44SJohn Forte 3266fcf3ce44SJohn Forte /* 3267fcf3ce44SJohn Forte * iscsi_iodone - 3268fcf3ce44SJohn Forte * 3269fcf3ce44SJohn Forte */ 3270fcf3ce44SJohn Forte void 3271fcf3ce44SJohn Forte iscsi_iodone(iscsi_sess_t *isp, iscsi_cmd_t *icmdp) 3272fcf3ce44SJohn Forte { 3273fcf3ce44SJohn Forte struct scsi_pkt *pkt = NULL; 3274fcf3ce44SJohn Forte struct buf *bp = icmdp->cmd_un.scsi.bp; 3275fcf3ce44SJohn Forte 3276fcf3ce44SJohn Forte ASSERT(isp != NULL); 3277fcf3ce44SJohn Forte ASSERT(icmdp != NULL); 3278fcf3ce44SJohn Forte pkt = icmdp->cmd_un.scsi.pkt; 3279fcf3ce44SJohn Forte ASSERT(pkt != NULL); 3280fcf3ce44SJohn Forte 3281fcf3ce44SJohn Forte ASSERT(icmdp->cmd_un.scsi.abort_icmdp == NULL); 3282fcf3ce44SJohn Forte ASSERT(icmdp->cmd_un.scsi.r2t_icmdp == NULL); 3283fcf3ce44SJohn Forte if (pkt->pkt_reason == CMD_CMPLT) { 3284fcf3ce44SJohn Forte if (bp) { 3285fcf3ce44SJohn Forte if (bp->b_flags & B_READ) { 3286fcf3ce44SJohn Forte KSTAT_SESS_RX_IO_DONE(isp, bp->b_bcount); 3287fcf3ce44SJohn Forte } else { 3288fcf3ce44SJohn Forte KSTAT_SESS_TX_IO_DONE(isp, bp->b_bcount); 3289fcf3ce44SJohn Forte } 3290fcf3ce44SJohn Forte } 3291fcf3ce44SJohn Forte } 3292fcf3ce44SJohn Forte 3293fcf3ce44SJohn Forte if (pkt->pkt_flags & FLAG_NOINTR) { 3294fcf3ce44SJohn Forte cv_broadcast(&icmdp->cmd_completion); 3295fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 3296fcf3ce44SJohn Forte } else { 3297fcf3ce44SJohn Forte /* 3298fcf3ce44SJohn Forte * Release mutex. As soon as callback is 3299fcf3ce44SJohn Forte * issued the caller may destroy the command. 3300fcf3ce44SJohn Forte */ 3301fcf3ce44SJohn Forte mutex_exit(&icmdp->cmd_mutex); 3302fcf3ce44SJohn Forte /* 3303fcf3ce44SJohn Forte * We can't just directly call the pk_comp routine. In 3304fcf3ce44SJohn Forte * many error cases the target driver will use the calling 3305fcf3ce44SJohn Forte * thread to re-drive error handling (reset, retries...) 3306fcf3ce44SJohn Forte * back into the hba driver (iscsi). If the target redrives 3307fcf3ce44SJohn Forte * a reset back into the iscsi driver off this thead we have 3308fcf3ce44SJohn Forte * a chance of deadlocking. So instead use the io completion 3309fcf3ce44SJohn Forte * thread. 3310fcf3ce44SJohn Forte */ 3311fcf3ce44SJohn Forte (*icmdp->cmd_un.scsi.pkt->pkt_comp)(icmdp->cmd_un.scsi.pkt); 3312fcf3ce44SJohn Forte } 3313fcf3ce44SJohn Forte } 3314fcf3ce44SJohn Forte 3315fcf3ce44SJohn Forte /* 3316fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3317fcf3ce44SJohn Forte * | End of completion routines | 3318fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3319fcf3ce44SJohn Forte */ 3320fcf3ce44SJohn Forte 3321fcf3ce44SJohn Forte /* 3322fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3323fcf3ce44SJohn Forte * | Beginning of watchdog routines | 3324fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3325fcf3ce44SJohn Forte */ 3326fcf3ce44SJohn Forte 3327fcf3ce44SJohn Forte /* 3328fcf3ce44SJohn Forte * iscsi_watchdog_thread - 3329fcf3ce44SJohn Forte * 3330fcf3ce44SJohn Forte */ 3331fcf3ce44SJohn Forte void 3332fcf3ce44SJohn Forte iscsi_wd_thread(iscsi_thread_t *thread, void *arg) 3333fcf3ce44SJohn Forte { 3334fcf3ce44SJohn Forte iscsi_sess_t *isp = (iscsi_sess_t *)arg; 3335fcf3ce44SJohn Forte int rc = 1; 3336fcf3ce44SJohn Forte 3337fcf3ce44SJohn Forte ASSERT(isp != NULL); 3338fcf3ce44SJohn Forte 3339fcf3ce44SJohn Forte while (rc != NULL) { 3340fcf3ce44SJohn Forte 3341fcf3ce44SJohn Forte iscsi_timeout_checks(isp); 3342fcf3ce44SJohn Forte iscsi_nop_checks(isp); 3343fcf3ce44SJohn Forte 3344fcf3ce44SJohn Forte rc = iscsi_thread_wait(thread, SEC_TO_TICK(1)); 3345fcf3ce44SJohn Forte } 3346fcf3ce44SJohn Forte } 3347fcf3ce44SJohn Forte 3348fcf3ce44SJohn Forte /* 3349fcf3ce44SJohn Forte * iscsi_timeout_checks - 3350fcf3ce44SJohn Forte * 3351fcf3ce44SJohn Forte */ 3352fcf3ce44SJohn Forte static void 3353fcf3ce44SJohn Forte iscsi_timeout_checks(iscsi_sess_t *isp) 3354fcf3ce44SJohn Forte { 3355fcf3ce44SJohn Forte clock_t now = ddi_get_lbolt(); 3356fcf3ce44SJohn Forte iscsi_conn_t *icp; 335730e7468fSPeter Dunlap iscsi_cmd_t *icmdp, *nicmdp; 3358fcf3ce44SJohn Forte 3359fcf3ce44SJohn Forte ASSERT(isp != NULL); 3360fcf3ce44SJohn Forte 3361fcf3ce44SJohn Forte /* PENDING */ 3362fcf3ce44SJohn Forte mutex_enter(&isp->sess_state_mutex); 3363fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 3364fcf3ce44SJohn Forte for (icmdp = isp->sess_queue_pending.head; 3365fcf3ce44SJohn Forte icmdp; icmdp = nicmdp) { 3366fcf3ce44SJohn Forte nicmdp = icmdp->cmd_next; 3367fcf3ce44SJohn Forte 3368fcf3ce44SJohn Forte /* Skip entries with no timeout */ 3369fcf3ce44SJohn Forte if (icmdp->cmd_lbolt_timeout == 0) 3370fcf3ce44SJohn Forte continue; 3371fcf3ce44SJohn Forte 3372fcf3ce44SJohn Forte /* 3373fcf3ce44SJohn Forte * Skip pending queue entries for cmd_type values that depend 3374fcf3ce44SJohn Forte * on having an open cmdsn window for successfull transition 3375fcf3ce44SJohn Forte * from pending to the active (i.e. ones that depend on 3376fcf3ce44SJohn Forte * sess_cmdsn .vs. sess_maxcmdsn). For them, the timer starts 3377fcf3ce44SJohn Forte * when they are successfully moved to the active queue by 3378fcf3ce44SJohn Forte * iscsi_cmd_state_pending() code. 3379fcf3ce44SJohn Forte */ 3380d233de7eSJack Meng /* 3381d233de7eSJack Meng * If the cmd is stuck, at least give it a chance 3382d233de7eSJack Meng * to timeout 3383d233de7eSJack Meng */ 3384d233de7eSJack Meng if (((icmdp->cmd_type == ISCSI_CMD_TYPE_SCSI) || 3385d233de7eSJack Meng (icmdp->cmd_type == ISCSI_CMD_TYPE_TEXT)) && 3386d233de7eSJack Meng !(icmdp->cmd_misc_flags & ISCSI_CMD_MISCFLAG_STUCK)) 3387fcf3ce44SJohn Forte continue; 3388fcf3ce44SJohn Forte 3389fcf3ce44SJohn Forte /* Skip if timeout still in the future */ 3390fcf3ce44SJohn Forte if (now <= icmdp->cmd_lbolt_timeout) 3391fcf3ce44SJohn Forte continue; 3392fcf3ce44SJohn Forte 3393fcf3ce44SJohn Forte /* timeout */ 3394fcf3ce44SJohn Forte iscsi_cmd_state_machine(icmdp, ISCSI_CMD_EVENT_E6, isp); 3395fcf3ce44SJohn Forte } 3396fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 3397fcf3ce44SJohn Forte mutex_exit(&isp->sess_state_mutex); 3398fcf3ce44SJohn Forte 3399fcf3ce44SJohn Forte rw_enter(&isp->sess_conn_list_rwlock, RW_READER); 3400fcf3ce44SJohn Forte icp = isp->sess_conn_list; 3401fcf3ce44SJohn Forte while (icp != NULL) { 3402fcf3ce44SJohn Forte 3403aff4bce5Syi zhang - Sun Microsystems - Beijing China icp->conn_timeout = B_FALSE; 3404fcf3ce44SJohn Forte /* ACTIVE */ 3405fcf3ce44SJohn Forte mutex_enter(&icp->conn_state_mutex); 3406fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 3407fcf3ce44SJohn Forte mutex_enter(&icp->conn_queue_active.mutex); 3408fcf3ce44SJohn Forte for (icmdp = icp->conn_queue_active.head; 3409fcf3ce44SJohn Forte icmdp; icmdp = nicmdp) { 3410fcf3ce44SJohn Forte nicmdp = icmdp->cmd_next; 3411fcf3ce44SJohn Forte 3412aff4bce5Syi zhang - Sun Microsystems - Beijing China if (iscsi_nop_timeout_checks(icmdp) == B_TRUE) { 3413aff4bce5Syi zhang - Sun Microsystems - Beijing China icp->conn_timeout = B_TRUE; 3414aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3415aff4bce5Syi zhang - Sun Microsystems - Beijing China 3416fcf3ce44SJohn Forte /* Skip entries with no timeout */ 3417fcf3ce44SJohn Forte if (icmdp->cmd_lbolt_timeout == 0) 3418fcf3ce44SJohn Forte continue; 3419fcf3ce44SJohn Forte 34202b79d384Sbing zhao - Sun Microsystems - Beijing China /* 34212b79d384Sbing zhao - Sun Microsystems - Beijing China * Skip if command is not active or not needed 34222b79d384Sbing zhao - Sun Microsystems - Beijing China * to flush. 34232b79d384Sbing zhao - Sun Microsystems - Beijing China */ 34242b79d384Sbing zhao - Sun Microsystems - Beijing China if (icmdp->cmd_state != ISCSI_CMD_STATE_ACTIVE && 34252b79d384Sbing zhao - Sun Microsystems - Beijing China !(icmdp->cmd_misc_flags & ISCSI_CMD_MISCFLAG_FLUSH)) 3426fcf3ce44SJohn Forte continue; 3427fcf3ce44SJohn Forte 3428fcf3ce44SJohn Forte /* Skip if timeout still in the future */ 3429fcf3ce44SJohn Forte if (now <= icmdp->cmd_lbolt_timeout) 3430fcf3ce44SJohn Forte continue; 3431fcf3ce44SJohn Forte 34322b79d384Sbing zhao - Sun Microsystems - Beijing China if (icmdp->cmd_misc_flags & ISCSI_CMD_MISCFLAG_FLUSH) { 34332b79d384Sbing zhao - Sun Microsystems - Beijing China /* 34342b79d384Sbing zhao - Sun Microsystems - Beijing China * This command is left during target reset, 34352b79d384Sbing zhao - Sun Microsystems - Beijing China * we can flush it now. 34362b79d384Sbing zhao - Sun Microsystems - Beijing China */ 34372b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_state_machine(icmdp, 34382b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_EVENT_E7, isp); 34392b79d384Sbing zhao - Sun Microsystems - Beijing China } else if (icmdp->cmd_state == ISCSI_CMD_STATE_ACTIVE) { 34402b79d384Sbing zhao - Sun Microsystems - Beijing China /* timeout */ 34412b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_state_machine(icmdp, 34422b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_EVENT_E6, isp); 34432b79d384Sbing zhao - Sun Microsystems - Beijing China } 34442b79d384Sbing zhao - Sun Microsystems - Beijing China 3445fcf3ce44SJohn Forte } 3446fcf3ce44SJohn Forte mutex_exit(&icp->conn_queue_active.mutex); 3447fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 3448fcf3ce44SJohn Forte mutex_exit(&icp->conn_state_mutex); 3449fcf3ce44SJohn Forte 3450fcf3ce44SJohn Forte icp = icp->conn_next; 3451fcf3ce44SJohn Forte } 3452aff4bce5Syi zhang - Sun Microsystems - Beijing China 3453aff4bce5Syi zhang - Sun Microsystems - Beijing China icp = isp->sess_conn_list; 3454aff4bce5Syi zhang - Sun Microsystems - Beijing China while (icp != NULL) { 3455aff4bce5Syi zhang - Sun Microsystems - Beijing China if (icp->conn_timeout == B_TRUE) { 3456aff4bce5Syi zhang - Sun Microsystems - Beijing China /* timeout on this connect detected */ 3457aff4bce5Syi zhang - Sun Microsystems - Beijing China idm_ini_conn_disconnect(icp->conn_ic); 3458aff4bce5Syi zhang - Sun Microsystems - Beijing China icp->conn_timeout = B_FALSE; 3459aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3460aff4bce5Syi zhang - Sun Microsystems - Beijing China icp = icp->conn_next; 3461aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3462fcf3ce44SJohn Forte rw_exit(&isp->sess_conn_list_rwlock); 3463fcf3ce44SJohn Forte } 3464fcf3ce44SJohn Forte 3465fcf3ce44SJohn Forte /* 3466fcf3ce44SJohn Forte * iscsi_nop_checks - sends a NOP on idle connections 3467fcf3ce44SJohn Forte * 3468fcf3ce44SJohn Forte * This function walks the connections on a session and 3469fcf3ce44SJohn Forte * issues NOPs on those connections that are in FULL 3470fcf3ce44SJohn Forte * FEATURE mode and have not received data for the 3471fcf3ce44SJohn Forte * time period specified by iscsi_nop_delay (global). 3472fcf3ce44SJohn Forte */ 3473fcf3ce44SJohn Forte static void 3474fcf3ce44SJohn Forte iscsi_nop_checks(iscsi_sess_t *isp) 3475fcf3ce44SJohn Forte { 3476fcf3ce44SJohn Forte iscsi_conn_t *icp; 3477fcf3ce44SJohn Forte 3478fcf3ce44SJohn Forte ASSERT(isp != NULL); 3479fcf3ce44SJohn Forte 3480fcf3ce44SJohn Forte if (isp->sess_type == ISCSI_SESS_TYPE_DISCOVERY) { 3481fcf3ce44SJohn Forte return; 3482fcf3ce44SJohn Forte } 3483fcf3ce44SJohn Forte 3484fcf3ce44SJohn Forte rw_enter(&isp->sess_conn_list_rwlock, RW_READER); 3485fcf3ce44SJohn Forte icp = isp->sess_conn_act; 3486fcf3ce44SJohn Forte if (icp != NULL) { 3487fcf3ce44SJohn Forte 3488fcf3ce44SJohn Forte mutex_enter(&icp->conn_state_mutex); 3489fcf3ce44SJohn Forte if ((ISCSI_CONN_STATE_FULL_FEATURE(icp->conn_state)) && 3490fcf3ce44SJohn Forte (ddi_get_lbolt() > isp->sess_conn_act->conn_rx_lbolt + 3491fcf3ce44SJohn Forte SEC_TO_TICK(iscsi_nop_delay)) && (ddi_get_lbolt() > 3492fcf3ce44SJohn Forte isp->sess_conn_act->conn_nop_lbolt + 3493fcf3ce44SJohn Forte SEC_TO_TICK(iscsi_nop_delay))) { 3494fcf3ce44SJohn Forte 3495fcf3ce44SJohn Forte /* 3496fcf3ce44SJohn Forte * We haven't received anything from the 3497fcf3ce44SJohn Forte * target is a defined period of time, 3498fcf3ce44SJohn Forte * send NOP to see if the target is alive. 3499fcf3ce44SJohn Forte */ 3500fcf3ce44SJohn Forte mutex_enter(&isp->sess_queue_pending.mutex); 3501fcf3ce44SJohn Forte iscsi_handle_nop(isp->sess_conn_act, 3502fcf3ce44SJohn Forte 0, ISCSI_RSVD_TASK_TAG); 3503fcf3ce44SJohn Forte mutex_exit(&isp->sess_queue_pending.mutex); 3504fcf3ce44SJohn Forte } 3505fcf3ce44SJohn Forte mutex_exit(&icp->conn_state_mutex); 3506fcf3ce44SJohn Forte 3507fcf3ce44SJohn Forte icp = icp->conn_next; 3508fcf3ce44SJohn Forte } 3509fcf3ce44SJohn Forte rw_exit(&isp->sess_conn_list_rwlock); 3510fcf3ce44SJohn Forte } 3511fcf3ce44SJohn Forte 3512aff4bce5Syi zhang - Sun Microsystems - Beijing China static boolean_t 3513aff4bce5Syi zhang - Sun Microsystems - Beijing China iscsi_nop_timeout_checks(iscsi_cmd_t *icmdp) 3514aff4bce5Syi zhang - Sun Microsystems - Beijing China { 3515aff4bce5Syi zhang - Sun Microsystems - Beijing China if (icmdp->cmd_type == ISCSI_CMD_TYPE_NOP) { 3516aff4bce5Syi zhang - Sun Microsystems - Beijing China if ((ddi_get_lbolt() - icmdp->cmd_lbolt_active) > 3517aff4bce5Syi zhang - Sun Microsystems - Beijing China SEC_TO_TICK(ISCSI_CONN_TIEMOUT_DETECT)) { 3518aff4bce5Syi zhang - Sun Microsystems - Beijing China return (B_TRUE); 3519aff4bce5Syi zhang - Sun Microsystems - Beijing China } else { 3520aff4bce5Syi zhang - Sun Microsystems - Beijing China return (B_FALSE); 3521aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3522aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3523aff4bce5Syi zhang - Sun Microsystems - Beijing China return (B_FALSE); 3524aff4bce5Syi zhang - Sun Microsystems - Beijing China } 3525fcf3ce44SJohn Forte /* 3526fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3527fcf3ce44SJohn Forte * | End of wd routines | 3528fcf3ce44SJohn Forte * +--------------------------------------------------------------------+ 3529fcf3ce44SJohn Forte */ 35302b79d384Sbing zhao - Sun Microsystems - Beijing China 35312b79d384Sbing zhao - Sun Microsystems - Beijing China /* 35322b79d384Sbing zhao - Sun Microsystems - Beijing China * iscsi_flush_cmd_after_reset - flush commands after reset 35332b79d384Sbing zhao - Sun Microsystems - Beijing China * 35342b79d384Sbing zhao - Sun Microsystems - Beijing China * Here we will flush all the commands in the same connection whose cmdsn is 35352b79d384Sbing zhao - Sun Microsystems - Beijing China * less than the one received with the Unit Attention. 35362b79d384Sbing zhao - Sun Microsystems - Beijing China */ 35372b79d384Sbing zhao - Sun Microsystems - Beijing China static void 35382b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_flush_cmd_after_reset(uint32_t cmd_sn, uint16_t lun_num, 35392b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_conn_t *icp) 35402b79d384Sbing zhao - Sun Microsystems - Beijing China { 35412b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_t *t_icmdp = NULL; 35422b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_cmd_t *next_icmdp = NULL; 35432b79d384Sbing zhao - Sun Microsystems - Beijing China 35442b79d384Sbing zhao - Sun Microsystems - Beijing China ASSERT(icp != NULL); 35452b79d384Sbing zhao - Sun Microsystems - Beijing China 35462b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp = icp->conn_queue_active.head; 35472b79d384Sbing zhao - Sun Microsystems - Beijing China while (t_icmdp != NULL) { 35482b79d384Sbing zhao - Sun Microsystems - Beijing China next_icmdp = t_icmdp->cmd_next; 35492b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_enter(&t_icmdp->cmd_mutex); 35502b79d384Sbing zhao - Sun Microsystems - Beijing China /* 35512b79d384Sbing zhao - Sun Microsystems - Beijing China * We will flush the commands whose cmdsn is less than the one 35522b79d384Sbing zhao - Sun Microsystems - Beijing China * got Unit Attention. 35532b79d384Sbing zhao - Sun Microsystems - Beijing China * Here we will check for wrap by subtracting and compare to 35542b79d384Sbing zhao - Sun Microsystems - Beijing China * 1/2 of a 32 bit number, if greater then we wrapped. 35552b79d384Sbing zhao - Sun Microsystems - Beijing China */ 35562b79d384Sbing zhao - Sun Microsystems - Beijing China if ((t_icmdp->cmd_misc_flags & ISCSI_CMD_MISCFLAG_SENT) && 35572b79d384Sbing zhao - Sun Microsystems - Beijing China ((cmd_sn > t_icmdp->cmd_sn) || 35582b79d384Sbing zhao - Sun Microsystems - Beijing China ((t_icmdp->cmd_sn - cmd_sn) > 35592b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_SN_WRAP))) { 35602b79d384Sbing zhao - Sun Microsystems - Beijing China if (t_icmdp->cmd_lun != NULL && 35612b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_lun->lun_num == lun_num) { 35622b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_misc_flags |= 35632b79d384Sbing zhao - Sun Microsystems - Beijing China ISCSI_CMD_MISCFLAG_FLUSH; 35642b79d384Sbing zhao - Sun Microsystems - Beijing China if (t_icmdp->cmd_type == ISCSI_CMD_TYPE_SCSI) { 35652b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp->cmd_un.scsi.pkt_stat |= 35662b79d384Sbing zhao - Sun Microsystems - Beijing China STAT_BUS_RESET; 35672b79d384Sbing zhao - Sun Microsystems - Beijing China } 35682b79d384Sbing zhao - Sun Microsystems - Beijing China } 35692b79d384Sbing zhao - Sun Microsystems - Beijing China } 35702b79d384Sbing zhao - Sun Microsystems - Beijing China mutex_exit(&t_icmdp->cmd_mutex); 35712b79d384Sbing zhao - Sun Microsystems - Beijing China t_icmdp = next_icmdp; 35722b79d384Sbing zhao - Sun Microsystems - Beijing China } 35732b79d384Sbing zhao - Sun Microsystems - Beijing China } 35742b79d384Sbing zhao - Sun Microsystems - Beijing China 35752b79d384Sbing zhao - Sun Microsystems - Beijing China /* 35762b79d384Sbing zhao - Sun Microsystems - Beijing China * iscsi_decode_sense - decode the sense data in the cmd response 35772b79d384Sbing zhao - Sun Microsystems - Beijing China * 35782b79d384Sbing zhao - Sun Microsystems - Beijing China * Here we only care about Unit Attention with 0x29. 35792b79d384Sbing zhao - Sun Microsystems - Beijing China */ 35802b79d384Sbing zhao - Sun Microsystems - Beijing China static boolean_t 35812b79d384Sbing zhao - Sun Microsystems - Beijing China iscsi_decode_sense(uint8_t *sense_data) 35822b79d384Sbing zhao - Sun Microsystems - Beijing China { 35832b79d384Sbing zhao - Sun Microsystems - Beijing China uint8_t sense_key = 0; 35842b79d384Sbing zhao - Sun Microsystems - Beijing China uint8_t asc = 0; 35852b79d384Sbing zhao - Sun Microsystems - Beijing China boolean_t affect = B_FALSE; 35862b79d384Sbing zhao - Sun Microsystems - Beijing China 35872b79d384Sbing zhao - Sun Microsystems - Beijing China ASSERT(sense_data != NULL); 35882b79d384Sbing zhao - Sun Microsystems - Beijing China 35892b79d384Sbing zhao - Sun Microsystems - Beijing China sense_key = scsi_sense_key(sense_data); 35902b79d384Sbing zhao - Sun Microsystems - Beijing China switch (sense_key) { 35912b79d384Sbing zhao - Sun Microsystems - Beijing China case KEY_UNIT_ATTENTION: 35922b79d384Sbing zhao - Sun Microsystems - Beijing China asc = scsi_sense_asc(sense_data); 35932b79d384Sbing zhao - Sun Microsystems - Beijing China switch (asc) { 35942b79d384Sbing zhao - Sun Microsystems - Beijing China case ISCSI_SCSI_RESET_SENSE_CODE: 35952b79d384Sbing zhao - Sun Microsystems - Beijing China /* 35962b79d384Sbing zhao - Sun Microsystems - Beijing China * POWER ON, RESET, OR BUS_DEVICE RESET 35972b79d384Sbing zhao - Sun Microsystems - Beijing China * OCCURRED 35982b79d384Sbing zhao - Sun Microsystems - Beijing China */ 35992b79d384Sbing zhao - Sun Microsystems - Beijing China affect = B_TRUE; 36002b79d384Sbing zhao - Sun Microsystems - Beijing China break; 36012b79d384Sbing zhao - Sun Microsystems - Beijing China default: 36022b79d384Sbing zhao - Sun Microsystems - Beijing China /* 36032b79d384Sbing zhao - Sun Microsystems - Beijing China * Currently we don't care 36042b79d384Sbing zhao - Sun Microsystems - Beijing China * about other sense key. 36052b79d384Sbing zhao - Sun Microsystems - Beijing China */ 36062b79d384Sbing zhao - Sun Microsystems - Beijing China break; 36072b79d384Sbing zhao - Sun Microsystems - Beijing China } 36082b79d384Sbing zhao - Sun Microsystems - Beijing China break; 36092b79d384Sbing zhao - Sun Microsystems - Beijing China default: 36102b79d384Sbing zhao - Sun Microsystems - Beijing China /* 36112b79d384Sbing zhao - Sun Microsystems - Beijing China * Currently we don't care 36122b79d384Sbing zhao - Sun Microsystems - Beijing China * about other sense key. 36132b79d384Sbing zhao - Sun Microsystems - Beijing China */ 36142b79d384Sbing zhao - Sun Microsystems - Beijing China break; 36152b79d384Sbing zhao - Sun Microsystems - Beijing China } 36162b79d384Sbing zhao - Sun Microsystems - Beijing China return (affect); 36172b79d384Sbing zhao - Sun Microsystems - Beijing China } 3618