diff options
Diffstat (limited to 'drivers/target/target_core_pr.c')
| -rw-r--r-- | drivers/target/target_core_pr.c | 2379 |
1 files changed, 1093 insertions, 1286 deletions
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 2521f75362c..df357862286 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -4,8 +4,7 @@ * This file contains SPC-3 compliant persistent reservations and * legacy SPC-2 reservations with compatible reservation handling (CRH=1) * - * Copyright (c) 2009, 2010 Rising Tide Systems - * Copyright (c) 2009, 2010 Linux-iSCSI.org + * (c) Copyright 2009-2013 Datera, Inc. * * Nicholas A. Bellinger <nab@kernel.org> * @@ -25,23 +24,20 @@ * ******************************************************************************/ -#include <linux/version.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/list.h> +#include <linux/file.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <asm/unaligned.h> #include <target/target_core_base.h> -#include <target/target_core_device.h> -#include <target/target_core_tmr.h> -#include <target/target_core_tpg.h> -#include <target/target_core_transport.h> -#include <target/target_core_fabric_ops.h> +#include <target/target_core_backend.h> +#include <target/target_core_fabric.h> #include <target/target_core_configfs.h> -#include "target_core_hba.h" +#include "target_core_internal.h" #include "target_core_pr.h" #include "target_core_ua.h" @@ -57,146 +53,56 @@ struct pr_transport_id_holder { struct list_head dest_list; }; -int core_pr_dump_initiator_port( +void core_pr_dump_initiator_port( struct t10_pr_registration *pr_reg, char *buf, u32 size) { - if (!(pr_reg->isid_present_at_reg)) - return 0; + if (!pr_reg->isid_present_at_reg) + buf[0] = '\0'; - snprintf(buf, size, ",i,0x%s", &pr_reg->pr_reg_isid[0]); - return 1; + snprintf(buf, size, ",i,0x%s", pr_reg->pr_reg_isid); } +enum register_type { + REGISTER, + REGISTER_AND_IGNORE_EXISTING_KEY, + REGISTER_AND_MOVE, +}; + +enum preempt_type { + PREEMPT, + PREEMPT_AND_ABORT, +}; + static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *, struct t10_pr_registration *, int); -static int core_scsi2_reservation_seq_non_holder( - struct se_cmd *cmd, - unsigned char *cdb, - u32 pr_reg_type) +static sense_reason_t +target_scsi2_reservation_check(struct se_cmd *cmd) { - switch (cdb[0]) { + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + + switch (cmd->t_task_cdb[0]) { case INQUIRY: case RELEASE: case RELEASE_10: return 0; default: - return 1; - } - - return 1; -} - -static int core_scsi2_reservation_check(struct se_cmd *cmd, u32 *pr_reg_type) -{ - struct se_device *dev = cmd->se_dev; - struct se_session *sess = cmd->se_sess; - int ret; - - if (!(sess)) - return 0; - - spin_lock(&dev->dev_reservation_lock); - if (!dev->dev_reserved_node_acl || !sess) { - spin_unlock(&dev->dev_reservation_lock); - return 0; - } - if (dev->dev_reserved_node_acl != sess->se_node_acl) { - spin_unlock(&dev->dev_reservation_lock); - return -1; - } - if (!(dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID)) { - spin_unlock(&dev->dev_reservation_lock); - return 0; + break; } - ret = (dev->dev_res_bin_isid == sess->sess_bin_isid) ? 0 : -1; - spin_unlock(&dev->dev_reservation_lock); - - return ret; -} - -static int core_scsi2_reservation_release(struct se_cmd *cmd) -{ - struct se_device *dev = cmd->se_dev; - struct se_session *sess = cmd->se_sess; - struct se_portal_group *tpg = sess->se_tpg; - if (!(sess) || !(tpg)) + if (!dev->dev_reserved_node_acl || !sess) return 0; - spin_lock(&dev->dev_reservation_lock); - if (!dev->dev_reserved_node_acl || !sess) { - spin_unlock(&dev->dev_reservation_lock); - return 0; - } + if (dev->dev_reserved_node_acl != sess->se_node_acl) + return TCM_RESERVATION_CONFLICT; - if (dev->dev_reserved_node_acl != sess->se_node_acl) { - spin_unlock(&dev->dev_reservation_lock); - return 0; + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { + if (dev->dev_res_bin_isid != sess->sess_bin_isid) + return TCM_RESERVATION_CONFLICT; } - dev->dev_reserved_node_acl = NULL; - dev->dev_flags &= ~DF_SPC2_RESERVATIONS; - if (dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID) { - dev->dev_res_bin_isid = 0; - dev->dev_flags &= ~DF_SPC2_RESERVATIONS_WITH_ISID; - } - printk(KERN_INFO "SCSI-2 Released reservation for %s LUN: %u ->" - " MAPPED LUN: %u for %s\n", TPG_TFO(tpg)->get_fabric_name(), - SE_LUN(cmd)->unpacked_lun, cmd->se_deve->mapped_lun, - sess->se_node_acl->initiatorname); - spin_unlock(&dev->dev_reservation_lock); - - return 0; -} - -static int core_scsi2_reservation_reserve(struct se_cmd *cmd) -{ - struct se_device *dev = cmd->se_dev; - struct se_session *sess = cmd->se_sess; - struct se_portal_group *tpg = sess->se_tpg; - - if ((T_TASK(cmd)->t_task_cdb[1] & 0x01) && - (T_TASK(cmd)->t_task_cdb[1] & 0x02)) { - printk(KERN_ERR "LongIO and Obselete Bits set, returning" - " ILLEGAL_REQUEST\n"); - return PYX_TRANSPORT_ILLEGAL_REQUEST; - } - /* - * This is currently the case for target_core_mod passthrough struct se_cmd - * ops - */ - if (!(sess) || !(tpg)) - return 0; - - spin_lock(&dev->dev_reservation_lock); - if (dev->dev_reserved_node_acl && - (dev->dev_reserved_node_acl != sess->se_node_acl)) { - printk(KERN_ERR "SCSI-2 RESERVATION CONFLIFT for %s fabric\n", - TPG_TFO(tpg)->get_fabric_name()); - printk(KERN_ERR "Original reserver LUN: %u %s\n", - SE_LUN(cmd)->unpacked_lun, - dev->dev_reserved_node_acl->initiatorname); - printk(KERN_ERR "Current attempt - LUN: %u -> MAPPED LUN: %u" - " from %s \n", SE_LUN(cmd)->unpacked_lun, - cmd->se_deve->mapped_lun, - sess->se_node_acl->initiatorname); - spin_unlock(&dev->dev_reservation_lock); - return PYX_TRANSPORT_RESERVATION_CONFLICT; - } - - dev->dev_reserved_node_acl = sess->se_node_acl; - dev->dev_flags |= DF_SPC2_RESERVATIONS; - if (sess->sess_bin_isid != 0) { - dev->dev_res_bin_isid = sess->sess_bin_isid; - dev->dev_flags |= DF_SPC2_RESERVATIONS_WITH_ISID; - } - printk(KERN_INFO "SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u" - " for %s\n", TPG_TFO(tpg)->get_fabric_name(), - SE_LUN(cmd)->unpacked_lun, cmd->se_deve->mapped_lun, - sess->se_node_acl->initiatorname); - spin_unlock(&dev->dev_reservation_lock); return 0; } @@ -205,27 +111,14 @@ static struct t10_pr_registration *core_scsi3_locate_pr_reg(struct se_device *, struct se_node_acl *, struct se_session *); static void core_scsi3_put_pr_reg(struct t10_pr_registration *); -/* - * Setup in target_core_transport.c:transport_generic_cmd_sequencer() - * and called via struct se_cmd->transport_emulate_cdb() in TCM processing - * thread context. - */ -int core_scsi2_emulate_crh(struct se_cmd *cmd) +static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd) { struct se_session *se_sess = cmd->se_sess; - struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev; + struct se_device *dev = cmd->se_dev; struct t10_pr_registration *pr_reg; - struct t10_reservation_template *pr_tmpl = &su_dev->t10_reservation; - unsigned char *cdb = &T_TASK(cmd)->t_task_cdb[0]; - int crh = (T10_RES(su_dev)->res_type == SPC3_PERSISTENT_RESERVATIONS); + struct t10_reservation *pr_tmpl = &dev->t10_pr; int conflict = 0; - if (!(se_sess)) - return 0; - - if (!(crh)) - goto after_crh; - pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, se_sess); if (pr_reg) { @@ -252,14 +145,14 @@ int core_scsi2_emulate_crh(struct se_cmd *cmd) */ if (pr_reg->pr_res_holder) { core_scsi3_put_pr_reg(pr_reg); - return 0; + return 1; } if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) || (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) || (pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { core_scsi3_put_pr_reg(pr_reg); - return 0; + return 1; } core_scsi3_put_pr_reg(pr_reg); conflict = 1; @@ -280,21 +173,125 @@ int core_scsi2_emulate_crh(struct se_cmd *cmd) } if (conflict) { - printk(KERN_ERR "Received legacy SPC-2 RESERVE/RELEASE" + pr_err("Received legacy SPC-2 RESERVE/RELEASE" " while active SPC-3 registrations exist," " returning RESERVATION_CONFLICT\n"); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return -EBUSY; } -after_crh: - if ((cdb[0] == RESERVE) || (cdb[0] == RESERVE_10)) - return core_scsi2_reservation_reserve(cmd); - else if ((cdb[0] == RELEASE) || (cdb[0] == RELEASE_10)) - return core_scsi2_reservation_release(cmd); - else - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return 0; +} + +sense_reason_t +target_scsi2_reservation_release(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + struct se_portal_group *tpg; + int rc; + + if (!sess || !sess->se_tpg) + goto out; + rc = target_check_scsi2_reservation_conflict(cmd); + if (rc == 1) + goto out; + if (rc < 0) + return TCM_RESERVATION_CONFLICT; + + spin_lock(&dev->dev_reservation_lock); + if (!dev->dev_reserved_node_acl || !sess) + goto out_unlock; + + if (dev->dev_reserved_node_acl != sess->se_node_acl) + goto out_unlock; + + if (dev->dev_res_bin_isid != sess->sess_bin_isid) + goto out_unlock; + + dev->dev_reserved_node_acl = NULL; + dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS; + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { + dev->dev_res_bin_isid = 0; + dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS_WITH_ISID; + } + tpg = sess->se_tpg; + pr_debug("SCSI-2 Released reservation for %s LUN: %u ->" + " MAPPED LUN: %u for %s\n", tpg->se_tpg_tfo->get_fabric_name(), + cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun, + sess->se_node_acl->initiatorname); + +out_unlock: + spin_unlock(&dev->dev_reservation_lock); +out: + target_complete_cmd(cmd, GOOD); + return 0; +} + +sense_reason_t +target_scsi2_reservation_reserve(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + struct se_portal_group *tpg; + sense_reason_t ret = 0; + int rc; + + if ((cmd->t_task_cdb[1] & 0x01) && + (cmd->t_task_cdb[1] & 0x02)) { + pr_err("LongIO and Obselete Bits set, returning" + " ILLEGAL_REQUEST\n"); + return TCM_UNSUPPORTED_SCSI_OPCODE; + } + /* + * This is currently the case for target_core_mod passthrough struct se_cmd + * ops + */ + if (!sess || !sess->se_tpg) + goto out; + rc = target_check_scsi2_reservation_conflict(cmd); + if (rc == 1) + goto out; + + if (rc < 0) + return TCM_RESERVATION_CONFLICT; + + tpg = sess->se_tpg; + spin_lock(&dev->dev_reservation_lock); + if (dev->dev_reserved_node_acl && + (dev->dev_reserved_node_acl != sess->se_node_acl)) { + pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n", + tpg->se_tpg_tfo->get_fabric_name()); + pr_err("Original reserver LUN: %u %s\n", + cmd->se_lun->unpacked_lun, + dev->dev_reserved_node_acl->initiatorname); + pr_err("Current attempt - LUN: %u -> MAPPED LUN: %u" + " from %s \n", cmd->se_lun->unpacked_lun, + cmd->se_deve->mapped_lun, + sess->se_node_acl->initiatorname); + ret = TCM_RESERVATION_CONFLICT; + goto out_unlock; + } + + dev->dev_reserved_node_acl = sess->se_node_acl; + dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS; + if (sess->sess_bin_isid != 0) { + dev->dev_res_bin_isid = sess->sess_bin_isid; + dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS_WITH_ISID; + } + pr_debug("SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u" + " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), + cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun, + sess->se_node_acl->initiatorname); + +out_unlock: + spin_unlock(&dev->dev_reservation_lock); +out: + if (!ret) + target_complete_cmd(cmd, GOOD); + return ret; } + /* * Begin SPC-3/SPC-4 Persistent Reservations emulation support * @@ -303,28 +300,22 @@ after_crh: */ static int core_scsi3_pr_seq_non_holder( struct se_cmd *cmd, - unsigned char *cdb, u32 pr_reg_type) { + unsigned char *cdb = cmd->t_task_cdb; struct se_dev_entry *se_deve; - struct se_session *se_sess = SE_SESS(cmd); + struct se_session *se_sess = cmd->se_sess; int other_cdb = 0, ignore_reg; int registered_nexus = 0, ret = 1; /* Conflict by default */ int all_reg = 0, reg_only = 0; /* ALL_REG, REG_ONLY */ int we = 0; /* Write Exclusive */ int legacy = 0; /* Act like a legacy device and return * RESERVATION CONFLICT on some CDBs */ - /* - * A legacy SPC-2 reservation is being held. - */ - if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) - return core_scsi2_reservation_seq_non_holder(cmd, - cdb, pr_reg_type); - se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; + se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; /* * Determine if the registration should be ignored due to - * non-matching ISIDs in core_scsi3_pr_reservation_check(). + * non-matching ISIDs in target_scsi3_pr_reservation_check(). */ ignore_reg = (pr_reg_type & 0x80000000); if (ignore_reg) @@ -362,7 +353,7 @@ static int core_scsi3_pr_seq_non_holder( registered_nexus = 1; break; default: - return -1; + return -EINVAL; } /* * Referenced from spc4r17 table 45 for *NON* PR holder access @@ -412,19 +403,19 @@ static int core_scsi3_pr_seq_non_holder( ret = (registered_nexus) ? 0 : 1; break; default: - printk(KERN_ERR "Unknown PERSISTENT_RESERVE_OUT service" + pr_err("Unknown PERSISTENT_RESERVE_OUT service" " action: 0x%02x\n", cdb[1] & 0x1f); - return -1; + return -EINVAL; } break; case RELEASE: case RELEASE_10: - /* Handled by CRH=1 in core_scsi2_emulate_crh() */ + /* Handled by CRH=1 in target_scsi2_reservation_release() */ ret = 0; break; case RESERVE: case RESERVE_10: - /* Handled by CRH=1 in core_scsi2_emulate_crh() */ + /* Handled by CRH=1 in target_scsi2_reservation_reserve() */ ret = 0; break; case TEST_UNIT_READY: @@ -459,9 +450,9 @@ static int core_scsi3_pr_seq_non_holder( ret = 0; /* Allowed */ break; default: - printk(KERN_ERR "Unknown MI Service Action: 0x%02x\n", + pr_err("Unknown MI Service Action: 0x%02x\n", (cdb[1] & 0x1f)); - return -1; + return -EINVAL; } break; case ACCESS_CONTROL_IN: @@ -471,6 +462,7 @@ static int core_scsi3_pr_seq_non_holder( case READ_MEDIA_SERIAL_NUMBER: case REPORT_LUNS: case REQUEST_SENSE: + case PERSISTENT_RESERVE_IN: ret = 0; /*/ Allowed CDBs */ break; default: @@ -478,27 +470,26 @@ static int core_scsi3_pr_seq_non_holder( break; } /* - * Case where the CDB is explictly allowed in the above switch + * Case where the CDB is explicitly allowed in the above switch * statement. */ - if (!(ret) && !(other_cdb)) { -#if 0 - printk(KERN_INFO "Allowing explict CDB: 0x%02x for %s" + if (!ret && !other_cdb) { + pr_debug("Allowing explicit CDB: 0x%02x for %s" " reservation holder\n", cdb[0], core_scsi3_pr_dump_type(pr_reg_type)); -#endif + return ret; } /* * Check if write exclusive initiator ports *NOT* holding the * WRITE_EXCLUSIVE_* reservation. */ - if ((we) && !(registered_nexus)) { + if (we && !registered_nexus) { if (cmd->data_direction == DMA_TO_DEVICE) { /* * Conflict for write exclusive */ - printk(KERN_INFO "%s Conflict for unregistered nexus" + pr_debug("%s Conflict for unregistered nexus" " %s CDB: 0x%02x to %s reservation\n", transport_dump_cmd_direction(cmd), se_sess->se_node_acl->initiatorname, cdb[0], @@ -514,14 +505,14 @@ static int core_scsi3_pr_seq_non_holder( * as we expect registered non-reservation holding * nexuses to issue CDBs. */ -#if 0 - if (!(registered_nexus)) { - printk(KERN_INFO "Allowing implict CDB: 0x%02x" + + if (!registered_nexus) { + pr_debug("Allowing implicit CDB: 0x%02x" " for %s reservation on unregistered" " nexus\n", cdb[0], core_scsi3_pr_dump_type(pr_reg_type)); } -#endif + return 0; } } else if ((reg_only) || (all_reg)) { @@ -530,15 +521,15 @@ static int core_scsi3_pr_seq_non_holder( * For PR_*_REG_ONLY and PR_*_ALL_REG reservations, * allow commands from registered nexuses. */ -#if 0 - printk(KERN_INFO "Allowing implict CDB: 0x%02x for %s" + + pr_debug("Allowing implicit CDB: 0x%02x for %s" " reservation\n", cdb[0], core_scsi3_pr_dump_type(pr_reg_type)); -#endif + return 0; } } - printk(KERN_INFO "%s Conflict for %sregistered nexus %s CDB: 0x%2x" + pr_debug("%s Conflict for %sregistered nexus %s CDB: 0x%2x" " for %s reservation\n", transport_dump_cmd_direction(cmd), (registered_nexus) ? "" : "un", se_sess->se_node_acl->initiatorname, cdb[0], @@ -547,10 +538,41 @@ static int core_scsi3_pr_seq_non_holder( return 1; /* Conflict by default */ } +static sense_reason_t +target_scsi3_pr_reservation_check(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + u32 pr_reg_type; + + if (!dev->dev_pr_res_holder) + return 0; + + pr_reg_type = dev->dev_pr_res_holder->pr_res_type; + cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key; + if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl) + goto check_nonholder; + + if (dev->dev_pr_res_holder->isid_present_at_reg) { + if (dev->dev_pr_res_holder->pr_reg_bin_isid != + sess->sess_bin_isid) { + pr_reg_type |= 0x80000000; + goto check_nonholder; + } + } + + return 0; + +check_nonholder: + if (core_scsi3_pr_seq_non_holder(cmd, pr_reg_type)) + return TCM_RESERVATION_CONFLICT; + return 0; +} + static u32 core_scsi3_pr_generation(struct se_device *dev) { - struct se_subsystem_dev *su_dev = SU_DEV(dev); u32 prg; + /* * PRGeneration field shall contain the value of a 32-bit wrapping * counter mainted by the device server. @@ -561,56 +583,12 @@ static u32 core_scsi3_pr_generation(struct se_device *dev) * See spc4r17 section 6.3.12 READ_KEYS service action */ spin_lock(&dev->dev_reservation_lock); - prg = T10_RES(su_dev)->pr_generation++; + prg = dev->t10_pr.pr_generation++; spin_unlock(&dev->dev_reservation_lock); return prg; } -static int core_scsi3_pr_reservation_check( - struct se_cmd *cmd, - u32 *pr_reg_type) -{ - struct se_device *dev = cmd->se_dev; - struct se_session *sess = cmd->se_sess; - int ret; - - if (!(sess)) - return 0; - /* - * A legacy SPC-2 reservation is being held. - */ - if (dev->dev_flags & DF_SPC2_RESERVATIONS) - return core_scsi2_reservation_check(cmd, pr_reg_type); - - spin_lock(&dev->dev_reservation_lock); - if (!(dev->dev_pr_res_holder)) { - spin_unlock(&dev->dev_reservation_lock); - return 0; - } - *pr_reg_type = dev->dev_pr_res_holder->pr_res_type; - cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key; - if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl) { - spin_unlock(&dev->dev_reservation_lock); - return -1; - } - if (!(dev->dev_pr_res_holder->isid_present_at_reg)) { - spin_unlock(&dev->dev_reservation_lock); - return 0; - } - ret = (dev->dev_pr_res_holder->pr_reg_bin_isid == - sess->sess_bin_isid) ? 0 : -1; - /* - * Use bit in *pr_reg_type to notify ISID mismatch in - * core_scsi3_pr_seq_non_holder(). - */ - if (ret != 0) - *pr_reg_type |= 0x80000000; - spin_unlock(&dev->dev_reservation_lock); - - return ret; -} - static struct t10_pr_registration *__core_scsi3_do_alloc_registration( struct se_device *dev, struct se_node_acl *nacl, @@ -620,20 +598,11 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration( int all_tg_pt, int aptpl) { - struct se_subsystem_dev *su_dev = SU_DEV(dev); struct t10_pr_registration *pr_reg; pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_ATOMIC); - if (!(pr_reg)) { - printk(KERN_ERR "Unable to allocate struct t10_pr_registration\n"); - return NULL; - } - - pr_reg->pr_aptpl_buf = kzalloc(T10_RES(su_dev)->pr_aptpl_buf_len, - GFP_ATOMIC); - if (!(pr_reg->pr_aptpl_buf)) { - printk(KERN_ERR "Unable to allocate pr_reg->pr_aptpl_buf\n"); - kmem_cache_free(t10_pr_reg_cache, pr_reg); + if (!pr_reg) { + pr_err("Unable to allocate struct t10_pr_registration\n"); return NULL; } @@ -692,12 +661,12 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( */ pr_reg = __core_scsi3_do_alloc_registration(dev, nacl, deve, isid, sa_res_key, all_tg_pt, aptpl); - if (!(pr_reg)) + if (!pr_reg) return NULL; /* * Return pointer to pr_reg for ALL_TG_PT=0 */ - if (!(all_tg_pt)) + if (!all_tg_pt) return pr_reg; /* * Create list of matching SCSI Initiator Port registrations @@ -706,7 +675,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( spin_lock(&dev->se_port_lock); list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) { atomic_inc(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); spin_lock_bh(&port->sep_alua_lock); @@ -714,10 +683,10 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( alua_port_list) { /* * This pointer will be NULL for demo mode MappedLUNs - * that have not been make explict via a ConfigFS + * that have not been make explicit via a ConfigFS * MappedLUN group for the SCSI Initiator Node ACL. */ - if (!(deve_tmp->se_lun_acl)) + if (!deve_tmp->se_lun_acl) continue; nacl_tmp = deve_tmp->se_lun_acl->se_lun_nacl; @@ -741,7 +710,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( continue; atomic_inc(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock_bh(&port->sep_alua_lock); /* * Grab a configfs group dependency that is released @@ -751,12 +720,12 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( */ ret = core_scsi3_lunacl_depend_item(deve_tmp); if (ret < 0) { - printk(KERN_ERR "core_scsi3_lunacl_depend" + pr_err("core_scsi3_lunacl_depend" "_item() failed\n"); atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); atomic_dec(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); goto out; } /* @@ -769,11 +738,11 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( pr_reg_atp = __core_scsi3_do_alloc_registration(dev, nacl_tmp, deve_tmp, NULL, sa_res_key, all_tg_pt, aptpl); - if (!(pr_reg_atp)) { + if (!pr_reg_atp) { atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); atomic_dec(&deve_tmp->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_lunacl_undepend_item(deve_tmp); goto out; } @@ -786,7 +755,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( spin_lock(&dev->se_port_lock); atomic_dec(&port->sep_tg_pt_ref_cnt); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } spin_unlock(&dev->se_port_lock); @@ -803,7 +772,7 @@ out: } int core_scsi3_alloc_aptpl_registration( - struct t10_reservation_template *pr_tmpl, + struct t10_reservation *pr_tmpl, u64 sa_res_key, unsigned char *i_port, unsigned char *isid, @@ -817,17 +786,16 @@ int core_scsi3_alloc_aptpl_registration( { struct t10_pr_registration *pr_reg; - if (!(i_port) || !(t_port) || !(sa_res_key)) { - printk(KERN_ERR "Illegal parameters for APTPL registration\n"); - return -1; + if (!i_port || !t_port || !sa_res_key) { + pr_err("Illegal parameters for APTPL registration\n"); + return -EINVAL; } pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_KERNEL); - if (!(pr_reg)) { - printk(KERN_ERR "Unable to allocate struct t10_pr_registration\n"); - return -1; + if (!pr_reg) { + pr_err("Unable to allocate struct t10_pr_registration\n"); + return -ENOMEM; } - pr_reg->pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, GFP_KERNEL); INIT_LIST_HEAD(&pr_reg->pr_reg_list); INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list); @@ -869,7 +837,7 @@ int core_scsi3_alloc_aptpl_registration( pr_reg->pr_res_holder = res_holder; list_add_tail(&pr_reg->pr_reg_aptpl_list, &pr_tmpl->aptpl_reg_list); - printk(KERN_INFO "SPC-3 PR APTPL Successfully added registration%s from" + pr_debug("SPC-3 PR APTPL Successfully added registration%s from" " metadata\n", (res_holder) ? "+reservation" : ""); return 0; } @@ -881,28 +849,26 @@ static void core_scsi3_aptpl_reserve( struct t10_pr_registration *pr_reg) { char i_buf[PR_REG_ISID_ID_LEN]; - int prf_isid; memset(i_buf, 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); spin_lock(&dev->dev_reservation_lock); dev->dev_pr_res_holder = pr_reg; spin_unlock(&dev->dev_reservation_lock); - printk(KERN_INFO "SPC-3 PR [%s] Service Action: APTPL RESERVE created" + pr_debug("SPC-3 PR [%s] Service Action: APTPL RESERVE created" " new reservation holder TYPE: %s ALL_TG_PT: %d\n", - TPG_TFO(tpg)->get_fabric_name(), + tpg->se_tpg_tfo->get_fabric_name(), core_scsi3_pr_dump_type(pr_reg->pr_res_type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); - printk(KERN_INFO "SPC-3 PR [%s] RESERVE Node: %s%s\n", - TPG_TFO(tpg)->get_fabric_name(), node_acl->initiatorname, - (prf_isid) ? &i_buf[0] : ""); + pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", + tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname, + i_buf); } static void __core_scsi3_add_registration(struct se_device *, struct se_node_acl *, - struct t10_pr_registration *, int, int); + struct t10_pr_registration *, enum register_type, int); static int __core_scsi3_check_aptpl_registration( struct se_device *dev, @@ -913,7 +879,7 @@ static int __core_scsi3_check_aptpl_registration( struct se_dev_entry *deve) { struct t10_pr_registration *pr_reg, *pr_reg_tmp; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; unsigned char i_port[PR_APTPL_MAX_IPORT_LEN]; unsigned char t_port[PR_APTPL_MAX_TPORT_LEN]; u16 tpgt; @@ -925,8 +891,8 @@ static int __core_scsi3_check_aptpl_registration( */ snprintf(i_port, PR_APTPL_MAX_IPORT_LEN, "%s", nacl->initiatorname); snprintf(t_port, PR_APTPL_MAX_TPORT_LEN, "%s", - TPG_TFO(tpg)->tpg_get_wwn(tpg)); - tpgt = TPG_TFO(tpg)->tpg_get_tag(tpg); + tpg->se_tpg_tfo->tpg_get_wwn(tpg)); + tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); /* * Look for the matching registrations+reservation from those * created from APTPL metadata. Note that multiple registrations @@ -936,7 +902,7 @@ static int __core_scsi3_check_aptpl_registration( spin_lock(&pr_tmpl->aptpl_reg_lock); list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list, pr_reg_aptpl_list) { - if (!(strcmp(pr_reg->pr_iport, i_port)) && + if (!strcmp(pr_reg->pr_iport, i_port) && (pr_reg->pr_res_mapped_lun == deve->mapped_lun) && !(strcmp(pr_reg->pr_tport, t_port)) && (pr_reg->pr_reg_tpgt == tpgt) && @@ -980,11 +946,10 @@ int core_scsi3_check_aptpl_registration( struct se_lun *lun, struct se_lun_acl *lun_acl) { - struct se_subsystem_dev *su_dev = SU_DEV(dev); struct se_node_acl *nacl = lun_acl->se_lun_nacl; - struct se_dev_entry *deve = &nacl->device_list[lun_acl->mapped_lun]; + struct se_dev_entry *deve = nacl->device_list[lun_acl->mapped_lun]; - if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) return 0; return __core_scsi3_check_aptpl_registration(dev, tpg, lun, @@ -996,29 +961,27 @@ static void __core_scsi3_dump_registration( struct se_device *dev, struct se_node_acl *nacl, struct t10_pr_registration *pr_reg, - int register_type) + enum register_type register_type) { struct se_portal_group *se_tpg = nacl->se_tpg; char i_buf[PR_REG_ISID_ID_LEN]; - int prf_isid; memset(&i_buf[0], 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); - printk(KERN_INFO "SPC-3 PR [%s] Service Action: REGISTER%s Initiator" - " Node: %s%s\n", tfo->get_fabric_name(), (register_type == 2) ? - "_AND_MOVE" : (register_type == 1) ? + pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator" + " Node: %s%s\n", tfo->get_fabric_name(), (register_type == REGISTER_AND_MOVE) ? + "_AND_MOVE" : (register_type == REGISTER_AND_IGNORE_EXISTING_KEY) ? "_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname, - (prf_isid) ? i_buf : ""); - printk(KERN_INFO "SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n", + i_buf); + pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n", tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg)); - printk(KERN_INFO "SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" + pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" " Port(s)\n", tfo->get_fabric_name(), (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", - TRANSPORT(dev)->name); - printk(KERN_INFO "SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" + dev->transport->name); + pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" " 0x%08x APTPL: %d\n", tfo->get_fabric_name(), pr_reg->pr_res_key, pr_reg->pr_res_generation, pr_reg->pr_reg_aptpl); @@ -1032,13 +995,12 @@ static void __core_scsi3_add_registration( struct se_device *dev, struct se_node_acl *nacl, struct t10_pr_registration *pr_reg, - int register_type, + enum register_type register_type, int register_move) { - struct se_subsystem_dev *su_dev = SU_DEV(dev); struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; /* * Increment PRgeneration counter for struct se_device upon a successful @@ -1050,7 +1012,7 @@ static void __core_scsi3_add_registration( * for the REGISTER. */ pr_reg->pr_res_generation = (register_move) ? - T10_RES(su_dev)->pr_generation++ : + dev->t10_pr.pr_generation++ : core_scsi3_pr_generation(dev); spin_lock(&pr_tmpl->registration_lock); @@ -1062,7 +1024,7 @@ static void __core_scsi3_add_registration( /* * Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE. */ - if (!(pr_reg->pr_reg_all_tg_pt) || (register_move)) + if (!pr_reg->pr_reg_all_tg_pt || register_move) return; /* * Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1 @@ -1099,15 +1061,15 @@ static int core_scsi3_alloc_registration( u64 sa_res_key, int all_tg_pt, int aptpl, - int register_type, + enum register_type register_type, int register_move) { struct t10_pr_registration *pr_reg; pr_reg = __core_scsi3_alloc_registration(dev, nacl, deve, isid, sa_res_key, all_tg_pt, aptpl); - if (!(pr_reg)) - return -1; + if (!pr_reg) + return -EPERM; __core_scsi3_add_registration(dev, nacl, pr_reg, register_type, register_move); @@ -1119,7 +1081,7 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg( struct se_node_acl *nacl, unsigned char *isid) { - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; struct t10_pr_registration *pr_reg, *pr_reg_tmp; struct se_portal_group *tpg; @@ -1137,18 +1099,18 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg( * If this registration does NOT contain a fabric provided * ISID, then we have found a match. */ - if (!(pr_reg->isid_present_at_reg)) { + if (!pr_reg->isid_present_at_reg) { /* * Determine if this SCSI device server requires that * SCSI Intiatior TransportID w/ ISIDs is enforced * for fabric modules (iSCSI) requiring them. */ - if (TPG_TFO(tpg)->sess_get_initiator_sid != NULL) { - if (DEV_ATTRIB(dev)->enforce_pr_isids) + if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) { + if (dev->dev_attrib.enforce_pr_isids) continue; } atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); return pr_reg; } @@ -1157,13 +1119,13 @@ static struct t10_pr_registration *__core_scsi3_locate_pr_reg( * SCSI Initiator Port TransportIDs, then we expect a valid * matching ISID to be provided by the local SCSI Initiator Port. */ - if (!(isid)) + if (!isid) continue; if (strcmp(isid, pr_reg->pr_reg_isid)) continue; atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); return pr_reg; } @@ -1180,9 +1142,9 @@ static struct t10_pr_registration *core_scsi3_locate_pr_reg( struct se_portal_group *tpg = nacl->se_tpg; unsigned char buf[PR_REG_ISID_LEN], *isid_ptr = NULL; - if (TPG_TFO(tpg)->sess_get_initiator_sid != NULL) { + if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) { memset(&buf[0], 0, PR_REG_ISID_LEN); - TPG_TFO(tpg)->sess_get_initiator_sid(sess, &buf[0], + tpg->se_tpg_tfo->sess_get_initiator_sid(sess, &buf[0], PR_REG_ISID_LEN); isid_ptr = &buf[0]; } @@ -1193,10 +1155,10 @@ static struct t10_pr_registration *core_scsi3_locate_pr_reg( static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg) { atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } -static int core_scsi3_check_implict_release( +static int core_scsi3_check_implicit_release( struct se_device *dev, struct t10_pr_registration *pr_reg) { @@ -1206,13 +1168,13 @@ static int core_scsi3_check_implict_release( spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; - if (!(pr_res_holder)) { + if (!pr_res_holder) { spin_unlock(&dev->dev_reservation_lock); return ret; } if (pr_res_holder == pr_reg) { /* - * Perform an implict RELEASE if the registration that + * Perform an implicit RELEASE if the registration that * is being released is holding the reservation. * * From spc4r17, section 5.7.11.1: @@ -1230,17 +1192,17 @@ static int core_scsi3_check_implict_release( * For 'All Registrants' reservation types, all existing * registrations are still processed as reservation holders * in core_scsi3_pr_seq_non_holder() after the initial - * reservation holder is implictly released here. + * reservation holder is implicitly released here. */ } else if (pr_reg->pr_reg_all_tg_pt && (!strcmp(pr_res_holder->pr_reg_nacl->initiatorname, pr_reg->pr_reg_nacl->initiatorname)) && (pr_res_holder->pr_res_key == pr_reg->pr_res_key)) { - printk(KERN_ERR "SPC-3 PR: Unable to perform ALL_TG_PT=1" + pr_err("SPC-3 PR: Unable to perform ALL_TG_PT=1" " UNREGISTER while existing reservation with matching" " key 0x%016Lx is present from another SCSI Initiator" " Port\n", pr_reg->pr_res_key); - ret = -1; + ret = -EPERM; } spin_unlock(&dev->dev_reservation_lock); @@ -1248,7 +1210,7 @@ static int core_scsi3_check_implict_release( } /* - * Called with struct t10_reservation_template->registration_lock held. + * Called with struct t10_reservation->registration_lock held. */ static void __core_scsi3_free_registration( struct se_device *dev, @@ -1258,13 +1220,11 @@ static void __core_scsi3_free_registration( { struct target_core_fabric_ops *tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; char i_buf[PR_REG_ISID_ID_LEN]; - int prf_isid; memset(i_buf, 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); pr_reg->pr_reg_deve->def_pr_registered = 0; pr_reg->pr_reg_deve->pr_res_key = 0; @@ -1283,28 +1243,27 @@ static void __core_scsi3_free_registration( */ while (atomic_read(&pr_reg->pr_res_holders) != 0) { spin_unlock(&pr_tmpl->registration_lock); - printk("SPC-3 PR [%s] waiting for pr_res_holders\n", + pr_debug("SPC-3 PR [%s] waiting for pr_res_holders\n", tfo->get_fabric_name()); cpu_relax(); spin_lock(&pr_tmpl->registration_lock); } - printk(KERN_INFO "SPC-3 PR [%s] Service Action: UNREGISTER Initiator" + pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator" " Node: %s%s\n", tfo->get_fabric_name(), pr_reg->pr_reg_nacl->initiatorname, - (prf_isid) ? &i_buf[0] : ""); - printk(KERN_INFO "SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" + i_buf); + pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" " Port(s)\n", tfo->get_fabric_name(), (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", - TRANSPORT(dev)->name); - printk(KERN_INFO "SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" + dev->transport->name); + pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" " 0x%08x\n", tfo->get_fabric_name(), pr_reg->pr_res_key, pr_reg->pr_res_generation); - if (!(preempt_and_abort_list)) { + if (!preempt_and_abort_list) { pr_reg->pr_reg_deve = NULL; pr_reg->pr_reg_nacl = NULL; - kfree(pr_reg->pr_aptpl_buf); kmem_cache_free(t10_pr_reg_cache, pr_reg); return; } @@ -1319,7 +1278,7 @@ void core_scsi3_free_pr_reg_from_nacl( struct se_device *dev, struct se_node_acl *nacl) { - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder; /* * If the passed se_node_acl matches the reservation holder, @@ -1349,7 +1308,7 @@ void core_scsi3_free_pr_reg_from_nacl( void core_scsi3_free_all_registrations( struct se_device *dev) { - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder; spin_lock(&dev->dev_reservation_lock); @@ -1373,7 +1332,6 @@ void core_scsi3_free_all_registrations( list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list, pr_reg_aptpl_list) { list_del(&pr_reg->pr_reg_aptpl_list); - kfree(pr_reg->pr_aptpl_buf); kmem_cache_free(t10_pr_reg_cache, pr_reg); } spin_unlock(&pr_tmpl->aptpl_reg_lock); @@ -1381,17 +1339,17 @@ void core_scsi3_free_all_registrations( static int core_scsi3_tpg_depend_item(struct se_portal_group *tpg) { - return configfs_depend_item(TPG_TFO(tpg)->tf_subsys, + return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, &tpg->tpg_group.cg_item); } static void core_scsi3_tpg_undepend_item(struct se_portal_group *tpg) { - configfs_undepend_item(TPG_TFO(tpg)->tf_subsys, + configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, &tpg->tpg_group.cg_item); atomic_dec(&tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl) @@ -1401,7 +1359,7 @@ static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl) if (nacl->dynamic_node_acl) return 0; - return configfs_depend_item(TPG_TFO(tpg)->tf_subsys, + return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, &nacl->acl_group.cg_item); } @@ -1411,15 +1369,15 @@ static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl) if (nacl->dynamic_node_acl) { atomic_dec(&nacl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return; } - configfs_undepend_item(TPG_TFO(tpg)->tf_subsys, + configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, &nacl->acl_group.cg_item); atomic_dec(&nacl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve) @@ -1430,13 +1388,13 @@ static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve) /* * For nacl->dynamic_node_acl=1 */ - if (!(lun_acl)) + if (!lun_acl) return 0; nacl = lun_acl->se_lun_nacl; tpg = nacl->se_tpg; - return configfs_depend_item(TPG_TFO(tpg)->tf_subsys, + return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, &lun_acl->se_lun_group.cg_item); } @@ -1448,22 +1406,23 @@ static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve) /* * For nacl->dynamic_node_acl=1 */ - if (!(lun_acl)) { + if (!lun_acl) { atomic_dec(&se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); return; } nacl = lun_acl->se_lun_nacl; tpg = nacl->se_tpg; - configfs_undepend_item(TPG_TFO(tpg)->tf_subsys, + configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, &lun_acl->se_lun_group.cg_item); atomic_dec(&se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } -static int core_scsi3_decode_spec_i_port( +static sense_reason_t +core_scsi3_decode_spec_i_port( struct se_cmd *cmd, struct se_portal_group *tpg, unsigned char *l_isid, @@ -1471,28 +1430,28 @@ static int core_scsi3_decode_spec_i_port( int all_tg_pt, int aptpl) { - struct se_device *dev = SE_DEV(cmd); + struct se_device *dev = cmd->se_dev; struct se_port *tmp_port; struct se_portal_group *dest_tpg = NULL, *tmp_tpg; - struct se_session *se_sess = SE_SESS(cmd); + struct se_session *se_sess = cmd->se_sess; struct se_node_acl *dest_node_acl = NULL; struct se_dev_entry *dest_se_deve = NULL, *local_se_deve; struct t10_pr_registration *dest_pr_reg, *local_pr_reg, *pr_reg_e; struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe; - struct list_head tid_dest_list; + LIST_HEAD(tid_dest_list); struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp; struct target_core_fabric_ops *tmp_tf_ops; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + unsigned char *buf; unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident; char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; + sense_reason_t ret; u32 tpdl, tid_len = 0; - int ret, dest_local_nexus, prf_isid; + int dest_local_nexus; u32 dest_rtpi = 0; memset(dest_iport, 0, 64); - INIT_LIST_HEAD(&tid_dest_list); - local_se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; + local_se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; /* * Allocate a struct pr_transport_id_holder and setup the * local_node_acl and local_se_deve pointers and add to @@ -1500,21 +1459,21 @@ static int core_scsi3_decode_spec_i_port( * processing in the loop of tid_dest_list below. */ tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), GFP_KERNEL); - if (!(tidh_new)) { - printk(KERN_ERR "Unable to allocate tidh_new\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!tidh_new) { + pr_err("Unable to allocate tidh_new\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } INIT_LIST_HEAD(&tidh_new->dest_list); tidh_new->dest_tpg = tpg; tidh_new->dest_node_acl = se_sess->se_node_acl; tidh_new->dest_se_deve = local_se_deve; - local_pr_reg = __core_scsi3_alloc_registration(SE_DEV(cmd), + local_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev, se_sess->se_node_acl, local_se_deve, l_isid, sa_res_key, all_tg_pt, aptpl); - if (!(local_pr_reg)) { + if (!local_pr_reg) { kfree(tidh_new); - return PYX_TRANSPORT_LU_COMM_FAILURE; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } tidh_new->dest_pr_reg = local_pr_reg; /* @@ -1524,6 +1483,20 @@ static int core_scsi3_decode_spec_i_port( */ tidh_new->dest_local_nexus = 1; list_add_tail(&tidh_new->dest_list, &tid_dest_list); + + if (cmd->data_length < 28) { + pr_warn("SPC-PR: Received PR OUT parameter list" + " length too small: %u\n", cmd->data_length); + ret = TCM_INVALID_PARAMETER_LIST; + goto out; + } + + buf = transport_kmap_data_sg(cmd); + if (!buf) { + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out; + } + /* * For a PERSISTENT RESERVE OUT specify initiator ports payload, * first extract TransportID Parameter Data Length, and make sure @@ -1535,11 +1508,11 @@ static int core_scsi3_decode_spec_i_port( tpdl |= buf[27] & 0xff; if ((tpdl + 28) != cmd->data_length) { - printk(KERN_ERR "SPC-3 PR: Illegal tpdl: %u + 28 byte header" + pr_err("SPC-3 PR: Illegal tpdl: %u + 28 byte header" " does not equal CDB data_length: %u\n", tpdl, cmd->data_length); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; - goto out; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_unmap; } /* * Start processing the received transport IDs using the @@ -1555,13 +1528,13 @@ static int core_scsi3_decode_spec_i_port( spin_lock(&dev->se_port_lock); list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) { tmp_tpg = tmp_port->sep_tpg; - if (!(tmp_tpg)) + if (!tmp_tpg) continue; - tmp_tf_ops = TPG_TFO(tmp_tpg); - if (!(tmp_tf_ops)) + tmp_tf_ops = tmp_tpg->se_tpg_tfo; + if (!tmp_tf_ops) continue; - if (!(tmp_tf_ops->get_fabric_proto_ident) || - !(tmp_tf_ops->tpg_parse_pr_out_transport_id)) + if (!tmp_tf_ops->get_fabric_proto_ident || + !tmp_tf_ops->tpg_parse_pr_out_transport_id) continue; /* * Look for the matching proto_ident provided by @@ -1575,57 +1548,55 @@ static int core_scsi3_decode_spec_i_port( i_str = tmp_tf_ops->tpg_parse_pr_out_transport_id( tmp_tpg, (const char *)ptr, &tid_len, &iport_ptr); - if (!(i_str)) + if (!i_str) continue; atomic_inc(&tmp_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); - ret = core_scsi3_tpg_depend_item(tmp_tpg); - if (ret != 0) { - printk(KERN_ERR " core_scsi3_tpg_depend_item()" + if (core_scsi3_tpg_depend_item(tmp_tpg)) { + pr_err(" core_scsi3_tpg_depend_item()" " for tmp_tpg\n"); atomic_dec(&tmp_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); - ret = PYX_TRANSPORT_LU_COMM_FAILURE; - goto out; + smp_mb__after_atomic(); + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_unmap; } /* - * Locate the desination initiator ACL to be registered + * Locate the destination initiator ACL to be registered * from the decoded fabric module specific TransportID * at *i_str. */ - spin_lock_bh(&tmp_tpg->acl_node_lock); + spin_lock_irq(&tmp_tpg->acl_node_lock); dest_node_acl = __core_tpg_get_initiator_node_acl( tmp_tpg, i_str); if (dest_node_acl) { atomic_inc(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } - spin_unlock_bh(&tmp_tpg->acl_node_lock); + spin_unlock_irq(&tmp_tpg->acl_node_lock); - if (!(dest_node_acl)) { + if (!dest_node_acl) { core_scsi3_tpg_undepend_item(tmp_tpg); spin_lock(&dev->se_port_lock); continue; } - ret = core_scsi3_nodeacl_depend_item(dest_node_acl); - if (ret != 0) { - printk(KERN_ERR "configfs_depend_item() failed" + if (core_scsi3_nodeacl_depend_item(dest_node_acl)) { + pr_err("configfs_depend_item() failed" " for dest_node_acl->acl_group\n"); atomic_dec(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_tpg_undepend_item(tmp_tpg); - ret = PYX_TRANSPORT_LU_COMM_FAILURE; - goto out; + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_unmap; } dest_tpg = tmp_tpg; - printk(KERN_INFO "SPC-3 PR SPEC_I_PT: Located %s Node:" + pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node:" " %s Port RTPI: %hu\n", - TPG_TFO(dest_tpg)->get_fabric_name(), + dest_tpg->se_tpg_tfo->get_fabric_name(), dest_node_acl->initiatorname, dest_rtpi); spin_lock(&dev->se_port_lock); @@ -1633,25 +1604,25 @@ static int core_scsi3_decode_spec_i_port( } spin_unlock(&dev->se_port_lock); - if (!(dest_tpg)) { - printk(KERN_ERR "SPC-3 PR SPEC_I_PT: Unable to locate" + if (!dest_tpg) { + pr_err("SPC-3 PR SPEC_I_PT: Unable to locate" " dest_tpg\n"); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; - goto out; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_unmap; } -#if 0 - printk("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u" + + pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u" " tid_len: %d for %s + %s\n", - TPG_TFO(dest_tpg)->get_fabric_name(), cmd->data_length, + dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length, tpdl, tid_len, i_str, iport_ptr); -#endif + if (tid_len > tpdl) { - printk(KERN_ERR "SPC-3 PR SPEC_I_PT: Illegal tid_len:" + pr_err("SPC-3 PR SPEC_I_PT: Illegal tid_len:" " %u for Transport ID: %s\n", tid_len, ptr); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; - goto out; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_unmap; } /* * Locate the desintation struct se_dev_entry pointer for matching @@ -1660,35 +1631,34 @@ static int core_scsi3_decode_spec_i_port( */ dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, dest_rtpi); - if (!(dest_se_deve)) { - printk(KERN_ERR "Unable to locate %s dest_se_deve" + if (!dest_se_deve) { + pr_err("Unable to locate %s dest_se_deve" " from destination RTPI: %hu\n", - TPG_TFO(dest_tpg)->get_fabric_name(), + dest_tpg->se_tpg_tfo->get_fabric_name(), dest_rtpi); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; - goto out; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_unmap; } - ret = core_scsi3_lunacl_depend_item(dest_se_deve); - if (ret < 0) { - printk(KERN_ERR "core_scsi3_lunacl_depend_item()" + if (core_scsi3_lunacl_depend_item(dest_se_deve)) { + pr_err("core_scsi3_lunacl_depend_item()" " failed\n"); atomic_dec(&dest_se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); - ret = PYX_TRANSPORT_LU_COMM_FAILURE; - goto out; + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_unmap; } -#if 0 - printk(KERN_INFO "SPC-3 PR SPEC_I_PT: Located %s Node: %s" + + pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s" " dest_se_deve mapped_lun: %u\n", - TPG_TFO(dest_tpg)->get_fabric_name(), + dest_tpg->se_tpg_tfo->get_fabric_name(), dest_node_acl->initiatorname, dest_se_deve->mapped_lun); -#endif + /* * Skip any TransportIDs that already have a registration for * this target port. @@ -1712,13 +1682,13 @@ static int core_scsi3_decode_spec_i_port( */ tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), GFP_KERNEL); - if (!(tidh_new)) { - printk(KERN_ERR "Unable to allocate tidh_new\n"); + if (!tidh_new) { + pr_err("Unable to allocate tidh_new\n"); core_scsi3_lunacl_undepend_item(dest_se_deve); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); - ret = PYX_TRANSPORT_LU_COMM_FAILURE; - goto out; + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_unmap; } INIT_LIST_HEAD(&tidh_new->dest_list); tidh_new->dest_tpg = dest_tpg; @@ -1741,16 +1711,16 @@ static int core_scsi3_decode_spec_i_port( * and then call __core_scsi3_add_registration() in the * 2nd loop which will never fail. */ - dest_pr_reg = __core_scsi3_alloc_registration(SE_DEV(cmd), + dest_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev, dest_node_acl, dest_se_deve, iport_ptr, sa_res_key, all_tg_pt, aptpl); - if (!(dest_pr_reg)) { + if (!dest_pr_reg) { core_scsi3_lunacl_undepend_item(dest_se_deve); core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_tpg); kfree(tidh_new); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; - goto out; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_unmap; } tidh_new->dest_pr_reg = dest_pr_reg; list_add_tail(&tidh_new->dest_list, &tid_dest_list); @@ -1760,6 +1730,9 @@ static int core_scsi3_decode_spec_i_port( tid_len = 0; } + + transport_kunmap_data_sg(cmd); + /* * Go ahead and create a registrations from tid_dest_list for the * SPEC_I_PT provided TransportID for the *tidh referenced dest_node_acl @@ -1784,17 +1757,15 @@ static int core_scsi3_decode_spec_i_port( kfree(tidh); memset(i_buf, 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(dest_pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(dest_pr_reg, i_buf, PR_REG_ISID_ID_LEN); - __core_scsi3_add_registration(SE_DEV(cmd), dest_node_acl, + __core_scsi3_add_registration(cmd->se_dev, dest_node_acl, dest_pr_reg, 0, 0); - printk(KERN_INFO "SPC-3 PR [%s] SPEC_I_PT: Successfully" + pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully" " registered Transport ID for Node: %s%s Mapped LUN:" - " %u\n", TPG_TFO(dest_tpg)->get_fabric_name(), - dest_node_acl->initiatorname, (prf_isid) ? - &i_buf[0] : "", dest_se_deve->mapped_lun); + " %u\n", dest_tpg->se_tpg_tfo->get_fabric_name(), + dest_node_acl->initiatorname, i_buf, dest_se_deve->mapped_lun); if (dest_local_nexus) continue; @@ -1805,6 +1776,8 @@ static int core_scsi3_decode_spec_i_port( } return 0; +out_unmap: + transport_kunmap_data_sg(cmd); out: /* * For the failure case, release everything from tid_dest_list @@ -1831,7 +1804,6 @@ out: kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp); } - kfree(dest_pr_reg->pr_aptpl_buf); kmem_cache_free(t10_pr_reg_cache, dest_pr_reg); if (dest_local_nexus) @@ -1844,37 +1816,25 @@ out: return ret; } -/* - * Called with struct se_device->dev_reservation_lock held - */ -static int __core_scsi3_update_aptpl_buf( +static int core_scsi3_update_aptpl_buf( struct se_device *dev, unsigned char *buf, - u32 pr_aptpl_buf_len, - int clear_aptpl_metadata) + u32 pr_aptpl_buf_len) { struct se_lun *lun; struct se_portal_group *tpg; - struct se_subsystem_dev *su_dev = SU_DEV(dev); struct t10_pr_registration *pr_reg; unsigned char tmp[512], isid_buf[32]; ssize_t len = 0; int reg_count = 0; + int ret = 0; - memset(buf, 0, pr_aptpl_buf_len); - /* - * Called to clear metadata once APTPL has been deactivated. - */ - if (clear_aptpl_metadata) { - snprintf(buf, pr_aptpl_buf_len, - "No Registrations or Reservations\n"); - return 0; - } + spin_lock(&dev->dev_reservation_lock); + spin_lock(&dev->t10_pr.registration_lock); /* * Walk the registration list.. */ - spin_lock(&T10_RES(su_dev)->registration_lock); - list_for_each_entry(pr_reg, &T10_RES(su_dev)->registration_list, + list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, pr_reg_list) { tmp[0] = '\0'; @@ -1900,7 +1860,7 @@ static int __core_scsi3_update_aptpl_buf( "res_holder=1\nres_type=%02x\n" "res_scope=%02x\nres_all_tg_pt=%d\n" "mapped_lun=%u\n", reg_count, - TPG_TFO(tpg)->get_fabric_name(), + tpg->se_tpg_tfo->get_fabric_name(), pr_reg->pr_reg_nacl->initiatorname, isid_buf, pr_reg->pr_res_key, pr_reg->pr_res_type, pr_reg->pr_res_scope, pr_reg->pr_reg_all_tg_pt, @@ -1910,17 +1870,17 @@ static int __core_scsi3_update_aptpl_buf( "initiator_fabric=%s\ninitiator_node=%s\n%s" "sa_res_key=%llu\nres_holder=0\n" "res_all_tg_pt=%d\nmapped_lun=%u\n", - reg_count, TPG_TFO(tpg)->get_fabric_name(), + reg_count, tpg->se_tpg_tfo->get_fabric_name(), pr_reg->pr_reg_nacl->initiatorname, isid_buf, pr_reg->pr_res_key, pr_reg->pr_reg_all_tg_pt, pr_reg->pr_res_mapped_lun); } - if ((len + strlen(tmp) > pr_aptpl_buf_len)) { - printk(KERN_ERR "Unable to update renaming" + if ((len + strlen(tmp) >= pr_aptpl_buf_len)) { + pr_err("Unable to update renaming" " APTPL metadata\n"); - spin_unlock(&T10_RES(su_dev)->registration_lock); - return -1; + ret = -EMSGSIZE; + goto out; } len += sprintf(buf+len, "%s", tmp); @@ -1929,202 +1889,170 @@ static int __core_scsi3_update_aptpl_buf( */ snprintf(tmp, 512, "target_fabric=%s\ntarget_node=%s\n" "tpgt=%hu\nport_rtpi=%hu\ntarget_lun=%u\nPR_REG_END:" - " %d\n", TPG_TFO(tpg)->get_fabric_name(), - TPG_TFO(tpg)->tpg_get_wwn(tpg), - TPG_TFO(tpg)->tpg_get_tag(tpg), + " %d\n", tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->tpg_get_wwn(tpg), + tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->lun_sep->sep_rtpi, lun->unpacked_lun, reg_count); - if ((len + strlen(tmp) > pr_aptpl_buf_len)) { - printk(KERN_ERR "Unable to update renaming" + if ((len + strlen(tmp) >= pr_aptpl_buf_len)) { + pr_err("Unable to update renaming" " APTPL metadata\n"); - spin_unlock(&T10_RES(su_dev)->registration_lock); - return -1; + ret = -EMSGSIZE; + goto out; } len += sprintf(buf+len, "%s", tmp); reg_count++; } - spin_unlock(&T10_RES(su_dev)->registration_lock); - if (!(reg_count)) + if (!reg_count) len += sprintf(buf+len, "No Registrations or Reservations"); - return 0; -} - -static int core_scsi3_update_aptpl_buf( - struct se_device *dev, - unsigned char *buf, - u32 pr_aptpl_buf_len, - int clear_aptpl_metadata) -{ - int ret; - - spin_lock(&dev->dev_reservation_lock); - ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len, - clear_aptpl_metadata); +out: + spin_unlock(&dev->t10_pr.registration_lock); spin_unlock(&dev->dev_reservation_lock); return ret; } -/* - * Called with struct se_device->aptpl_file_mutex held - */ static int __core_scsi3_write_aptpl_to_file( struct se_device *dev, - unsigned char *buf, - u32 pr_aptpl_buf_len) + unsigned char *buf) { - struct t10_wwn *wwn = &SU_DEV(dev)->t10_wwn; + struct t10_wwn *wwn = &dev->t10_wwn; struct file *file; - struct iovec iov[1]; - mm_segment_t old_fs; int flags = O_RDWR | O_CREAT | O_TRUNC; char path[512]; + u32 pr_aptpl_buf_len; int ret; - memset(iov, 0, sizeof(struct iovec)); memset(path, 0, 512); - if (strlen(&wwn->unit_serial[0]) > 512) { - printk(KERN_ERR "WWN value for struct se_device does not fit" + if (strlen(&wwn->unit_serial[0]) >= 512) { + pr_err("WWN value for struct se_device does not fit" " into path buffer\n"); - return -1; + return -EMSGSIZE; } snprintf(path, 512, "/var/target/pr/aptpl_%s", &wwn->unit_serial[0]); file = filp_open(path, flags, 0600); - if (IS_ERR(file) || !file || !file->f_dentry) { - printk(KERN_ERR "filp_open(%s) for APTPL metadata" + if (IS_ERR(file)) { + pr_err("filp_open(%s) for APTPL metadata" " failed\n", path); - return -1; + return PTR_ERR(file); } - iov[0].iov_base = &buf[0]; - if (!(pr_aptpl_buf_len)) - iov[0].iov_len = (strlen(&buf[0]) + 1); /* Add extra for NULL */ - else - iov[0].iov_len = pr_aptpl_buf_len; + pr_aptpl_buf_len = (strlen(buf) + 1); /* Add extra for NULL */ - old_fs = get_fs(); - set_fs(get_ds()); - ret = vfs_writev(file, &iov[0], 1, &file->f_pos); - set_fs(old_fs); + ret = kernel_write(file, buf, pr_aptpl_buf_len, 0); - if (ret < 0) { - printk("Error writing APTPL metadata file: %s\n", path); - filp_close(file, NULL); - return -1; - } - filp_close(file, NULL); + if (ret < 0) + pr_debug("Error writing APTPL metadata file: %s\n", path); + fput(file); - return 0; + return (ret < 0) ? -EIO : 0; } -static int core_scsi3_update_and_write_aptpl( - struct se_device *dev, - unsigned char *in_buf, - u32 in_pr_aptpl_buf_len) +/* + * Clear the APTPL metadata if APTPL has been disabled, otherwise + * write out the updated metadata to struct file for this SCSI device. + */ +static sense_reason_t core_scsi3_update_and_write_aptpl(struct se_device *dev, bool aptpl) { - unsigned char null_buf[64], *buf; - u32 pr_aptpl_buf_len; - int ret, clear_aptpl_metadata = 0; - /* - * Can be called with a NULL pointer from PROUT service action CLEAR - */ - if (!(in_buf)) { - memset(null_buf, 0, 64); - buf = &null_buf[0]; - /* - * This will clear the APTPL metadata to: - * "No Registrations or Reservations" status - */ - pr_aptpl_buf_len = 64; - clear_aptpl_metadata = 1; - } else { - buf = in_buf; - pr_aptpl_buf_len = in_pr_aptpl_buf_len; + unsigned char *buf; + int rc; + + if (!aptpl) { + char *null_buf = "No Registrations or Reservations\n"; + + rc = __core_scsi3_write_aptpl_to_file(dev, null_buf); + dev->t10_pr.pr_aptpl_active = 0; + pr_debug("SPC-3 PR: Set APTPL Bit Deactivated\n"); + + if (rc) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + return 0; } - ret = core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len, - clear_aptpl_metadata); - if (ret != 0) - return -1; - /* - * __core_scsi3_write_aptpl_to_file() will call strlen() - * on the passed buf to determine pr_aptpl_buf_len. - */ - ret = __core_scsi3_write_aptpl_to_file(dev, buf, 0); - if (ret != 0) - return -1; + buf = kzalloc(PR_APTPL_BUF_LEN, GFP_KERNEL); + if (!buf) + return TCM_OUT_OF_RESOURCES; - return ret; + rc = core_scsi3_update_aptpl_buf(dev, buf, PR_APTPL_BUF_LEN); + if (rc < 0) { + kfree(buf); + return TCM_OUT_OF_RESOURCES; + } + + rc = __core_scsi3_write_aptpl_to_file(dev, buf); + if (rc != 0) { + pr_err("SPC-3 PR: Could not update APTPL\n"); + kfree(buf); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } + dev->t10_pr.pr_aptpl_active = 1; + kfree(buf); + pr_debug("SPC-3 PR: Set APTPL Bit Activated\n"); + return 0; } -static int core_scsi3_emulate_pro_register( - struct se_cmd *cmd, - u64 res_key, - u64 sa_res_key, - int aptpl, - int all_tg_pt, - int spec_i_pt, - int ignore_key) +static sense_reason_t +core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, + bool aptpl, bool all_tg_pt, bool spec_i_pt, enum register_type register_type) { - struct se_session *se_sess = SE_SESS(cmd); - struct se_device *dev = SE_DEV(cmd); + struct se_session *se_sess = cmd->se_sess; + struct se_device *dev = cmd->se_dev; struct se_dev_entry *se_deve; - struct se_lun *se_lun = SE_LUN(cmd); + struct se_lun *se_lun = cmd->se_lun; struct se_portal_group *se_tpg; - struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; - /* Used for APTPL metadata w/ UNREGISTER */ - unsigned char *pr_aptpl_buf = NULL; + struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp; + struct t10_reservation *pr_tmpl = &dev->t10_pr; unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL; - int pr_holder = 0, ret = 0, type; + sense_reason_t ret = TCM_NO_SENSE; + int pr_holder = 0, type; - if (!(se_sess) || !(se_lun)) { - printk(KERN_ERR "SPC-3 PR: se_sess || struct se_lun is NULL!\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!se_sess || !se_lun) { + pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } se_tpg = se_sess->se_tpg; - se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; + se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; - if (TPG_TFO(se_tpg)->sess_get_initiator_sid != NULL) { + if (se_tpg->se_tpg_tfo->sess_get_initiator_sid) { memset(&isid_buf[0], 0, PR_REG_ISID_LEN); - TPG_TFO(se_tpg)->sess_get_initiator_sid(se_sess, &isid_buf[0], + se_tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, &isid_buf[0], PR_REG_ISID_LEN); isid_ptr = &isid_buf[0]; } /* * Follow logic from spc4r17 Section 5.7.7, Register Behaviors Table 47 */ - pr_reg_e = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg_e)) { + pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); + if (!pr_reg) { if (res_key) { - printk(KERN_WARNING "SPC-3 PR: Reservation Key non-zero" + pr_warn("SPC-3 PR: Reservation Key non-zero" " for SA REGISTER, returning CONFLICT\n"); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return TCM_RESERVATION_CONFLICT; } /* * Do nothing but return GOOD status. */ - if (!(sa_res_key)) - return PYX_TRANSPORT_SENT_TO_TRANSPORT; + if (!sa_res_key) + return 0; - if (!(spec_i_pt)) { + if (!spec_i_pt) { /* * Perform the Service Action REGISTER on the Initiator * Port Endpoint that the PRO was received from on the * Logical Unit of the SCSI device server. */ - ret = core_scsi3_alloc_registration(SE_DEV(cmd), + if (core_scsi3_alloc_registration(cmd->se_dev, se_sess->se_node_acl, se_deve, isid_ptr, sa_res_key, all_tg_pt, aptpl, - ignore_key, 0); - if (ret != 0) { - printk(KERN_ERR "Unable to allocate" + register_type, 0)) { + pr_err("Unable to allocate" " struct t10_pr_registration\n"); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; } } else { /* @@ -2140,213 +2068,137 @@ static int core_scsi3_emulate_pro_register( if (ret != 0) return ret; } + + return core_scsi3_update_and_write_aptpl(dev, aptpl); + } + + /* ok, existing registration */ + + if ((register_type == REGISTER) && (res_key != pr_reg->pr_res_key)) { + pr_err("SPC-3 PR REGISTER: Received" + " res_key: 0x%016Lx does not match" + " existing SA REGISTER res_key:" + " 0x%016Lx\n", res_key, + pr_reg->pr_res_key); + ret = TCM_RESERVATION_CONFLICT; + goto out; + } + + if (spec_i_pt) { + pr_err("SPC-3 PR REGISTER: SPEC_I_PT" + " set on a registered nexus\n"); + ret = TCM_INVALID_PARAMETER_LIST; + goto out; + } + + /* + * An existing ALL_TG_PT=1 registration being released + * must also set ALL_TG_PT=1 in the incoming PROUT. + */ + if (pr_reg->pr_reg_all_tg_pt && !all_tg_pt) { + pr_err("SPC-3 PR REGISTER: ALL_TG_PT=1" + " registration exists, but ALL_TG_PT=1 bit not" + " present in received PROUT\n"); + ret = TCM_INVALID_CDB_FIELD; + goto out; + } + + /* + * sa_res_key=1 Change Reservation Key for registered I_T Nexus. + */ + if (sa_res_key) { /* - * Nothing left to do for the APTPL=0 case. + * Increment PRgeneration counter for struct se_device" + * upon a successful REGISTER, see spc4r17 section 6.3.2 + * READ_KEYS service action. */ - if (!(aptpl)) { - pr_tmpl->pr_aptpl_active = 0; - core_scsi3_update_and_write_aptpl(SE_DEV(cmd), NULL, 0); - printk("SPC-3 PR: Set APTPL Bit Deactivated for" - " REGISTER\n"); - return 0; - } + pr_reg->pr_res_generation = core_scsi3_pr_generation(cmd->se_dev); + pr_reg->pr_res_key = sa_res_key; + pr_debug("SPC-3 PR [%s] REGISTER%s: Changed Reservation" + " Key for %s to: 0x%016Lx PRgeneration:" + " 0x%08x\n", cmd->se_tfo->get_fabric_name(), + (register_type == REGISTER_AND_IGNORE_EXISTING_KEY) ? "_AND_IGNORE_EXISTING_KEY" : "", + pr_reg->pr_reg_nacl->initiatorname, + pr_reg->pr_res_key, pr_reg->pr_res_generation); + + } else { /* - * Locate the newly allocated local I_T Nexus *pr_reg, and - * update the APTPL metadata information using its - * preallocated *pr_reg->pr_aptpl_buf. + * sa_res_key=0 Unregister Reservation Key for registered I_T Nexus. */ - pr_reg = core_scsi3_locate_pr_reg(SE_DEV(cmd), - se_sess->se_node_acl, se_sess); - - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &pr_reg->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) { - pr_tmpl->pr_aptpl_active = 1; - printk("SPC-3 PR: Set APTPL Bit Activated for REGISTER\n"); + pr_holder = core_scsi3_check_implicit_release( + cmd->se_dev, pr_reg); + if (pr_holder < 0) { + ret = TCM_RESERVATION_CONFLICT; + goto out; } + type = pr_reg->pr_res_type; - core_scsi3_put_pr_reg(pr_reg); - return ret; - } else { + spin_lock(&pr_tmpl->registration_lock); /* - * Locate the existing *pr_reg via struct se_node_acl pointers + * Release all ALL_TG_PT=1 for the matching SCSI Initiator Port + * and matching pr_res_key. */ - pr_reg = pr_reg_e; - type = pr_reg->pr_res_type; + if (pr_reg->pr_reg_all_tg_pt) { + list_for_each_entry_safe(pr_reg_p, pr_reg_tmp, + &pr_tmpl->registration_list, + pr_reg_list) { + + if (!pr_reg_p->pr_reg_all_tg_pt) + continue; + if (pr_reg_p->pr_res_key != res_key) + continue; + if (pr_reg == pr_reg_p) + continue; + if (strcmp(pr_reg->pr_reg_nacl->initiatorname, + pr_reg_p->pr_reg_nacl->initiatorname)) + continue; - if (!(ignore_key)) { - if (res_key != pr_reg->pr_res_key) { - printk(KERN_ERR "SPC-3 PR REGISTER: Received" - " res_key: 0x%016Lx does not match" - " existing SA REGISTER res_key:" - " 0x%016Lx\n", res_key, - pr_reg->pr_res_key); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + __core_scsi3_free_registration(dev, + pr_reg_p, NULL, 0); } } - if (spec_i_pt) { - printk(KERN_ERR "SPC-3 PR UNREGISTER: SPEC_I_PT" - " set while sa_res_key=0\n"); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; - } + /* - * An existing ALL_TG_PT=1 registration being released - * must also set ALL_TG_PT=1 in the incoming PROUT. + * Release the calling I_T Nexus registration now.. */ - if (pr_reg->pr_reg_all_tg_pt && !(all_tg_pt)) { - printk(KERN_ERR "SPC-3 PR UNREGISTER: ALL_TG_PT=1" - " registration exists, but ALL_TG_PT=1 bit not" - " present in received PROUT\n"); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_CDB_FIELD; - } + __core_scsi3_free_registration(cmd->se_dev, pr_reg, NULL, 1); + pr_reg = NULL; + /* - * Allocate APTPL metadata buffer used for UNREGISTER ops + * From spc4r17, section 5.7.11.3 Unregistering + * + * If the persistent reservation is a registrants only + * type, the device server shall establish a unit + * attention condition for the initiator port associated + * with every registered I_T nexus except for the I_T + * nexus on which the PERSISTENT RESERVE OUT command was + * received, with the additional sense code set to + * RESERVATIONS RELEASED. */ - if (aptpl) { - pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, - GFP_KERNEL); - if (!(pr_aptpl_buf)) { - printk(KERN_ERR "Unable to allocate" - " pr_aptpl_buf\n"); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (pr_holder && + (type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY || + type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY)) { + list_for_each_entry(pr_reg_p, + &pr_tmpl->registration_list, + pr_reg_list) { + + core_scsi3_ua_allocate( + pr_reg_p->pr_reg_nacl, + pr_reg_p->pr_res_mapped_lun, + 0x2A, + ASCQ_2AH_RESERVATIONS_RELEASED); } } - /* - * sa_res_key=0 Unregister Reservation Key for registered I_T - * Nexus sa_res_key=1 Change Reservation Key for registered I_T - * Nexus. - */ - if (!(sa_res_key)) { - pr_holder = core_scsi3_check_implict_release( - SE_DEV(cmd), pr_reg); - if (pr_holder < 0) { - kfree(pr_aptpl_buf); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; - } - - spin_lock(&pr_tmpl->registration_lock); - /* - * Release all ALL_TG_PT=1 for the matching SCSI Initiator Port - * and matching pr_res_key. - */ - if (pr_reg->pr_reg_all_tg_pt) { - list_for_each_entry_safe(pr_reg_p, pr_reg_tmp, - &pr_tmpl->registration_list, - pr_reg_list) { - - if (!(pr_reg_p->pr_reg_all_tg_pt)) - continue; - - if (pr_reg_p->pr_res_key != res_key) - continue; - - if (pr_reg == pr_reg_p) - continue; - - if (strcmp(pr_reg->pr_reg_nacl->initiatorname, - pr_reg_p->pr_reg_nacl->initiatorname)) - continue; - - __core_scsi3_free_registration(dev, - pr_reg_p, NULL, 0); - } - } - /* - * Release the calling I_T Nexus registration now.. - */ - __core_scsi3_free_registration(SE_DEV(cmd), pr_reg, - NULL, 1); - /* - * From spc4r17, section 5.7.11.3 Unregistering - * - * If the persistent reservation is a registrants only - * type, the device server shall establish a unit - * attention condition for the initiator port associated - * with every registered I_T nexus except for the I_T - * nexus on which the PERSISTENT RESERVE OUT command was - * received, with the additional sense code set to - * RESERVATIONS RELEASED. - */ - if (pr_holder && - ((type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) || - (type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY))) { - list_for_each_entry(pr_reg_p, - &pr_tmpl->registration_list, - pr_reg_list) { - - core_scsi3_ua_allocate( - pr_reg_p->pr_reg_nacl, - pr_reg_p->pr_res_mapped_lun, - 0x2A, - ASCQ_2AH_RESERVATIONS_RELEASED); - } - } - spin_unlock(&pr_tmpl->registration_lock); - - if (!(aptpl)) { - pr_tmpl->pr_aptpl_active = 0; - core_scsi3_update_and_write_aptpl(dev, NULL, 0); - printk("SPC-3 PR: Set APTPL Bit Deactivated" - " for UNREGISTER\n"); - return 0; - } - - ret = core_scsi3_update_and_write_aptpl(dev, - &pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) { - pr_tmpl->pr_aptpl_active = 1; - printk("SPC-3 PR: Set APTPL Bit Activated" - " for UNREGISTER\n"); - } - kfree(pr_aptpl_buf); - return ret; - } else { - /* - * Increment PRgeneration counter for struct se_device" - * upon a successful REGISTER, see spc4r17 section 6.3.2 - * READ_KEYS service action. - */ - pr_reg->pr_res_generation = core_scsi3_pr_generation( - SE_DEV(cmd)); - pr_reg->pr_res_key = sa_res_key; - printk("SPC-3 PR [%s] REGISTER%s: Changed Reservation" - " Key for %s to: 0x%016Lx PRgeneration:" - " 0x%08x\n", CMD_TFO(cmd)->get_fabric_name(), - (ignore_key) ? "_AND_IGNORE_EXISTING_KEY" : "", - pr_reg->pr_reg_nacl->initiatorname, - pr_reg->pr_res_key, pr_reg->pr_res_generation); - - if (!(aptpl)) { - pr_tmpl->pr_aptpl_active = 0; - core_scsi3_update_and_write_aptpl(dev, NULL, 0); - core_scsi3_put_pr_reg(pr_reg); - printk("SPC-3 PR: Set APTPL Bit Deactivated" - " for REGISTER\n"); - return 0; - } + spin_unlock(&pr_tmpl->registration_lock); + } - ret = core_scsi3_update_and_write_aptpl(dev, - &pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) { - pr_tmpl->pr_aptpl_active = 1; - printk("SPC-3 PR: Set APTPL Bit Activated" - " for REGISTER\n"); - } + ret = core_scsi3_update_and_write_aptpl(dev, aptpl); - kfree(pr_aptpl_buf); - core_scsi3_put_pr_reg(pr_reg); - } - } - return 0; +out: + if (pr_reg) + core_scsi3_put_pr_reg(pr_reg); + return ret; } unsigned char *core_scsi3_pr_dump_type(int type) @@ -2371,39 +2223,32 @@ unsigned char *core_scsi3_pr_dump_type(int type) return "Unknown SPC-3 PR Type"; } -static int core_scsi3_pro_reserve( - struct se_cmd *cmd, - struct se_device *dev, - int type, - int scope, - u64 res_key) +static sense_reason_t +core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) { - struct se_session *se_sess = SE_SESS(cmd); - struct se_dev_entry *se_deve; - struct se_lun *se_lun = SE_LUN(cmd); - struct se_portal_group *se_tpg; + struct se_device *dev = cmd->se_dev; + struct se_session *se_sess = cmd->se_sess; + struct se_lun *se_lun = cmd->se_lun; struct t10_pr_registration *pr_reg, *pr_res_holder; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; char i_buf[PR_REG_ISID_ID_LEN]; - int ret, prf_isid; + sense_reason_t ret; memset(i_buf, 0, PR_REG_ISID_ID_LEN); - if (!(se_sess) || !(se_lun)) { - printk(KERN_ERR "SPC-3 PR: se_sess || struct se_lun is NULL!\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!se_sess || !se_lun) { + pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } - se_tpg = se_sess->se_tpg; - se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; /* * Locate the existing *pr_reg via struct se_node_acl pointers */ - pr_reg = core_scsi3_locate_pr_reg(SE_DEV(cmd), se_sess->se_node_acl, + pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg)) { - printk(KERN_ERR "SPC-3 PR: Unable to locate" + if (!pr_reg) { + pr_err("SPC-3 PR: Unable to locate" " PR_REGISTERED *pr_reg for RESERVE\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } /* * From spc4r17 Section 5.7.9: Reserving: @@ -2415,11 +2260,11 @@ static int core_scsi3_pro_reserve( * registered with the logical unit for the I_T nexus; and */ if (res_key != pr_reg->pr_res_key) { - printk(KERN_ERR "SPC-3 PR RESERVE: Received res_key: 0x%016Lx" + pr_err("SPC-3 PR RESERVE: Received res_key: 0x%016Lx" " does not match existing SA REGISTER res_key:" " 0x%016Lx\n", res_key, pr_reg->pr_res_key); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * From spc4r17 Section 5.7.9: Reserving: @@ -2432,9 +2277,9 @@ static int core_scsi3_pro_reserve( * and that persistent reservation has a scope of LU_SCOPE. */ if (scope != PR_SCOPE_LU_SCOPE) { - printk(KERN_ERR "SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); + ret = TCM_INVALID_PARAMETER_LIST; + goto out_put_pr_reg; } /* * See if we have an existing PR reservation holder pointer at @@ -2443,7 +2288,7 @@ static int core_scsi3_pro_reserve( */ spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; - if ((pr_res_holder)) { + if (pr_res_holder) { /* * From spc4r17 Section 5.7.9: Reserving: * @@ -2456,17 +2301,17 @@ static int core_scsi3_pro_reserve( */ if (pr_res_holder != pr_reg) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; - printk(KERN_ERR "SPC-3 PR: Attempted RESERVE from" + pr_err("SPC-3 PR: Attempted RESERVE from" " [%s]: %s while reservation already held by" " [%s]: %s, returning RESERVATION_CONFLICT\n", - CMD_TFO(cmd)->get_fabric_name(), + cmd->se_tfo->get_fabric_name(), se_sess->se_node_acl->initiatorname, - TPG_TFO(pr_res_nacl->se_tpg)->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * From spc4r17 Section 5.7.9: Reserving: @@ -2478,18 +2323,18 @@ static int core_scsi3_pro_reserve( if ((pr_res_holder->pr_res_type != type) || (pr_res_holder->pr_res_scope != scope)) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; - printk(KERN_ERR "SPC-3 PR: Attempted RESERVE from" + pr_err("SPC-3 PR: Attempted RESERVE from" " [%s]: %s trying to change TYPE and/or SCOPE," " while reservation already held by [%s]: %s," " returning RESERVATION_CONFLICT\n", - CMD_TFO(cmd)->get_fabric_name(), + cmd->se_tfo->get_fabric_name(), se_sess->se_node_acl->initiatorname, - TPG_TFO(pr_res_nacl->se_tpg)->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * From spc4r17 Section 5.7.9: Reserving: @@ -2502,8 +2347,8 @@ static int core_scsi3_pro_reserve( * shall completethe command with GOOD status. */ spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_SENT_TO_TRANSPORT; + ret = 0; + goto out_put_pr_reg; } /* * Otherwise, our *pr_reg becomes the PR reservation holder for said @@ -2513,41 +2358,31 @@ static int core_scsi3_pro_reserve( pr_reg->pr_res_type = type; pr_reg->pr_res_holder = 1; dev->dev_pr_res_holder = pr_reg; - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); - printk(KERN_INFO "SPC-3 PR [%s] Service Action: RESERVE created new" + pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - CMD_TFO(cmd)->get_fabric_name(), core_scsi3_pr_dump_type(type), + cmd->se_tfo->get_fabric_name(), core_scsi3_pr_dump_type(type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); - printk(KERN_INFO "SPC-3 PR [%s] RESERVE Node: %s%s\n", - CMD_TFO(cmd)->get_fabric_name(), + pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", + cmd->se_tfo->get_fabric_name(), se_sess->se_node_acl->initiatorname, - (prf_isid) ? &i_buf[0] : ""); + i_buf); spin_unlock(&dev->dev_reservation_lock); - if (pr_tmpl->pr_aptpl_active) { - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &pr_reg->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) - printk(KERN_INFO "SPC-3 PR: Updated APTPL metadata" - " for RESERVE\n"); - } + if (pr_tmpl->pr_aptpl_active) + core_scsi3_update_and_write_aptpl(cmd->se_dev, true); + ret = 0; +out_put_pr_reg: core_scsi3_put_pr_reg(pr_reg); - return 0; + return ret; } -static int core_scsi3_emulate_pro_reserve( - struct se_cmd *cmd, - int type, - int scope, - u64 res_key) +static sense_reason_t +core_scsi3_emulate_pro_reserve(struct se_cmd *cmd, int type, int scope, + u64 res_key) { - struct se_device *dev = cmd->se_dev; - int ret = 0; - switch (type) { case PR_TYPE_WRITE_EXCLUSIVE: case PR_TYPE_EXCLUSIVE_ACCESS: @@ -2555,15 +2390,12 @@ static int core_scsi3_emulate_pro_reserve( case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: - ret = core_scsi3_pro_reserve(cmd, dev, type, scope, res_key); - break; + return core_scsi3_pro_reserve(cmd, type, scope, res_key); default: - printk(KERN_ERR "SPC-3 PR: Unknown Service Action RESERVE Type:" + pr_err("SPC-3 PR: Unknown Service Action RESERVE Type:" " 0x%02x\n", type); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } - - return ret; } /* @@ -2573,59 +2405,56 @@ static void __core_scsi3_complete_pro_release( struct se_device *dev, struct se_node_acl *se_nacl, struct t10_pr_registration *pr_reg, - int explict) + int explicit) { struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo; char i_buf[PR_REG_ISID_ID_LEN]; - int prf_isid; memset(i_buf, 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); /* * Go ahead and release the current PR reservation holder. */ dev->dev_pr_res_holder = NULL; - printk(KERN_INFO "SPC-3 PR [%s] Service Action: %s RELEASE cleared" + pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - tfo->get_fabric_name(), (explict) ? "explict" : "implict", + tfo->get_fabric_name(), (explicit) ? "explicit" : "implicit", core_scsi3_pr_dump_type(pr_reg->pr_res_type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); - printk(KERN_INFO "SPC-3 PR [%s] RELEASE Node: %s%s\n", + pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n", tfo->get_fabric_name(), se_nacl->initiatorname, - (prf_isid) ? &i_buf[0] : ""); + i_buf); /* * Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE */ pr_reg->pr_res_holder = pr_reg->pr_res_type = pr_reg->pr_res_scope = 0; } -static int core_scsi3_emulate_pro_release( - struct se_cmd *cmd, - int type, - int scope, - u64 res_key) +static sense_reason_t +core_scsi3_emulate_pro_release(struct se_cmd *cmd, int type, int scope, + u64 res_key) { struct se_device *dev = cmd->se_dev; - struct se_session *se_sess = SE_SESS(cmd); - struct se_lun *se_lun = SE_LUN(cmd); + struct se_session *se_sess = cmd->se_sess; + struct se_lun *se_lun = cmd->se_lun; struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_res_holder; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; - int ret, all_reg = 0; + struct t10_reservation *pr_tmpl = &dev->t10_pr; + int all_reg = 0; + sense_reason_t ret = 0; - if (!(se_sess) || !(se_lun)) { - printk(KERN_ERR "SPC-3 PR: se_sess || struct se_lun is NULL!\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!se_sess || !se_lun) { + pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } /* * Locate the existing *pr_reg via struct se_node_acl pointers */ pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg)) { - printk(KERN_ERR "SPC-3 PR: Unable to locate" + if (!pr_reg) { + pr_err("SPC-3 PR: Unable to locate" " PR_REGISTERED *pr_reg for RELEASE\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } /* * From spc4r17 Section 5.7.11.2 Releasing: @@ -2641,13 +2470,12 @@ static int core_scsi3_emulate_pro_release( */ spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; - if (!(pr_res_holder)) { + if (!pr_res_holder) { /* * No persistent reservation, return GOOD status. */ spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_SENT_TO_TRANSPORT; + goto out_put_pr_reg; } if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) @@ -2660,9 +2488,9 @@ static int core_scsi3_emulate_pro_release( * persistent reservation holder. return GOOD status. */ spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_SENT_TO_TRANSPORT; + goto out_put_pr_reg; } + /* * From spc4r17 Section 5.7.11.2 Releasing: * @@ -2678,12 +2506,12 @@ static int core_scsi3_emulate_pro_release( * that is registered with the logical unit for the I_T nexus; */ if (res_key != pr_reg->pr_res_key) { - printk(KERN_ERR "SPC-3 PR RELEASE: Received res_key: 0x%016Lx" + pr_err("SPC-3 PR RELEASE: Received res_key: 0x%016Lx" " does not match existing SA REGISTER res_key:" " 0x%016Lx\n", res_key, pr_reg->pr_res_key); spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * From spc4r17 Section 5.7.11.2 Releasing and above: @@ -2694,18 +2522,18 @@ static int core_scsi3_emulate_pro_release( if ((pr_res_holder->pr_res_type != type) || (pr_res_holder->pr_res_scope != scope)) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; - printk(KERN_ERR "SPC-3 PR RELEASE: Attempted to release" + pr_err("SPC-3 PR RELEASE: Attempted to release" " reservation from [%s]: %s with different TYPE " "and/or SCOPE while reservation already held by" " [%s]: %s, returning RESERVATION_CONFLICT\n", - CMD_TFO(cmd)->get_fabric_name(), + cmd->se_tfo->get_fabric_name(), se_sess->se_node_acl->initiatorname, - TPG_TFO(pr_res_nacl->se_tpg)->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * In response to a persistent reservation release request from the @@ -2757,38 +2585,33 @@ static int core_scsi3_emulate_pro_release( spin_unlock(&pr_tmpl->registration_lock); write_aptpl: - if (pr_tmpl->pr_aptpl_active) { - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &pr_reg->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) - printk("SPC-3 PR: Updated APTPL metadata for RELEASE\n"); - } + if (pr_tmpl->pr_aptpl_active) + core_scsi3_update_and_write_aptpl(cmd->se_dev, true); +out_put_pr_reg: core_scsi3_put_pr_reg(pr_reg); - return 0; + return ret; } -static int core_scsi3_emulate_pro_clear( - struct se_cmd *cmd, - u64 res_key) +static sense_reason_t +core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key) { struct se_device *dev = cmd->se_dev; struct se_node_acl *pr_reg_nacl; - struct se_session *se_sess = SE_SESS(cmd); - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct se_session *se_sess = cmd->se_sess; + struct t10_reservation *pr_tmpl = &dev->t10_pr; struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder; u32 pr_res_mapped_lun = 0; int calling_it_nexus = 0; /* * Locate the existing *pr_reg via struct se_node_acl pointers */ - pr_reg_n = core_scsi3_locate_pr_reg(SE_DEV(cmd), + pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg_n)) { - printk(KERN_ERR "SPC-3 PR: Unable to locate" + if (!pr_reg_n) { + pr_err("SPC-3 PR: Unable to locate" " PR_REGISTERED *pr_reg for CLEAR\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } /* * From spc4r17 section 5.7.11.6, Clearing: @@ -2802,12 +2625,12 @@ static int core_scsi3_emulate_pro_clear( * that is registered with the logical unit for the I_T nexus. */ if (res_key != pr_reg_n->pr_res_key) { - printk(KERN_ERR "SPC-3 PR REGISTER: Received" + pr_err("SPC-3 PR REGISTER: Received" " res_key: 0x%016Lx does not match" " existing SA REGISTER res_key:" " 0x%016Lx\n", res_key, pr_reg_n->pr_res_key); core_scsi3_put_pr_reg(pr_reg_n); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return TCM_RESERVATION_CONFLICT; } /* * a) Release the persistent reservation, if any; @@ -2839,20 +2662,16 @@ static int core_scsi3_emulate_pro_clear( * command with CLEAR service action was received, with the * additional sense code set to RESERVATIONS PREEMPTED. */ - if (!(calling_it_nexus)) + if (!calling_it_nexus) core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A, ASCQ_2AH_RESERVATIONS_PREEMPTED); } spin_unlock(&pr_tmpl->registration_lock); - printk(KERN_INFO "SPC-3 PR [%s] Service Action: CLEAR complete\n", - CMD_TFO(cmd)->get_fabric_name()); + pr_debug("SPC-3 PR [%s] Service Action: CLEAR complete\n", + cmd->se_tfo->get_fabric_name()); - if (pr_tmpl->pr_aptpl_active) { - core_scsi3_update_and_write_aptpl(SE_DEV(cmd), NULL, 0); - printk(KERN_INFO "SPC-3 PR: Updated APTPL metadata" - " for CLEAR\n"); - } + core_scsi3_update_and_write_aptpl(cmd->se_dev, false); core_scsi3_pr_generation(dev); return 0; @@ -2867,18 +2686,16 @@ static void __core_scsi3_complete_pro_preempt( struct list_head *preempt_and_abort_list, int type, int scope, - int abort) + enum preempt_type preempt_type) { struct se_node_acl *nacl = pr_reg->pr_reg_nacl; struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; char i_buf[PR_REG_ISID_ID_LEN]; - int prf_isid; memset(i_buf, 0, PR_REG_ISID_ID_LEN); - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); /* - * Do an implict RELEASE of the existing reservation. + * Do an implicit RELEASE of the existing reservation. */ if (dev->dev_pr_res_holder) __core_scsi3_complete_pro_release(dev, nacl, @@ -2889,14 +2706,14 @@ static void __core_scsi3_complete_pro_preempt( pr_reg->pr_res_type = type; pr_reg->pr_res_scope = scope; - printk(KERN_INFO "SPC-3 PR [%s] Service Action: PREEMPT%s created new" + pr_debug("SPC-3 PR [%s] Service Action: PREEMPT%s created new" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "", + tfo->get_fabric_name(), (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", core_scsi3_pr_dump_type(type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); - printk(KERN_INFO "SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n", - tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "", - nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); + pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n", + tfo->get_fabric_name(), (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", + nacl->initiatorname, i_buf); /* * For PREEMPT_AND_ABORT, add the preempting reservation's * struct t10_pr_registration to the list that will be compared @@ -2920,73 +2737,50 @@ static void core_scsi3_release_preempt_and_abort( if (pr_reg_holder == pr_reg) continue; if (pr_reg->pr_res_holder) { - printk(KERN_WARNING "pr_reg->pr_res_holder still set\n"); + pr_warn("pr_reg->pr_res_holder still set\n"); continue; } pr_reg->pr_reg_deve = NULL; pr_reg->pr_reg_nacl = NULL; - kfree(pr_reg->pr_aptpl_buf); kmem_cache_free(t10_pr_reg_cache, pr_reg); } } -int core_scsi3_check_cdb_abort_and_preempt( - struct list_head *preempt_and_abort_list, - struct se_cmd *cmd) -{ - struct t10_pr_registration *pr_reg, *pr_reg_tmp; - - list_for_each_entry_safe(pr_reg, pr_reg_tmp, preempt_and_abort_list, - pr_reg_abort_list) { - if (pr_reg->pr_res_key == cmd->pr_res_key) - return 0; - } - - return 1; -} - -static int core_scsi3_pro_preempt( - struct se_cmd *cmd, - int type, - int scope, - u64 res_key, - u64 sa_res_key, - int abort) +static sense_reason_t +core_scsi3_pro_preempt(struct se_cmd *cmd, int type, int scope, u64 res_key, + u64 sa_res_key, enum preempt_type preempt_type) { - struct se_device *dev = SE_DEV(cmd); - struct se_dev_entry *se_deve; + struct se_device *dev = cmd->se_dev; struct se_node_acl *pr_reg_nacl; - struct se_session *se_sess = SE_SESS(cmd); - struct list_head preempt_and_abort_list; + struct se_session *se_sess = cmd->se_sess; + LIST_HEAD(preempt_and_abort_list); struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; + struct t10_reservation *pr_tmpl = &dev->t10_pr; u32 pr_res_mapped_lun = 0; int all_reg = 0, calling_it_nexus = 0, released_regs = 0; - int prh_type = 0, prh_scope = 0, ret; + int prh_type = 0, prh_scope = 0; - if (!(se_sess)) - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!se_sess) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; - pr_reg_n = core_scsi3_locate_pr_reg(SE_DEV(cmd), se_sess->se_node_acl, + pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg_n)) { - printk(KERN_ERR "SPC-3 PR: Unable to locate" + if (!pr_reg_n) { + pr_err("SPC-3 PR: Unable to locate" " PR_REGISTERED *pr_reg for PREEMPT%s\n", - (abort) ? "_AND_ABORT" : ""); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : ""); + return TCM_RESERVATION_CONFLICT; } if (pr_reg_n->pr_res_key != res_key) { core_scsi3_put_pr_reg(pr_reg_n); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return TCM_RESERVATION_CONFLICT; } if (scope != PR_SCOPE_LU_SCOPE) { - printk(KERN_ERR "SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); + pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); core_scsi3_put_pr_reg(pr_reg_n); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; } - INIT_LIST_HEAD(&preempt_and_abort_list); spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; @@ -2995,10 +2789,10 @@ static int core_scsi3_pro_preempt( (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))) all_reg = 1; - if (!(all_reg) && !(sa_res_key)) { + if (!all_reg && !sa_res_key) { spin_unlock(&dev->dev_reservation_lock); core_scsi3_put_pr_reg(pr_reg_n); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; } /* * From spc4r17, section 5.7.11.4.4 Removing Registrations: @@ -3009,7 +2803,7 @@ static int core_scsi3_pro_preempt( * server shall perform a preempt by doing the following in an * uninterrupted series of actions. (See below..) */ - if (!(pr_res_holder) || (pr_res_holder->pr_res_key != sa_res_key)) { + if (!pr_res_holder || (pr_res_holder->pr_res_key != sa_res_key)) { /* * No existing or SA Reservation Key matching reservations.. * @@ -3036,7 +2830,7 @@ static int core_scsi3_pro_preempt( * was received, with the additional sense code set * to REGISTRATIONS PREEMPTED. */ - if (!(all_reg)) { + if (!all_reg) { if (pr_reg->pr_res_key != sa_res_key) continue; @@ -3044,7 +2838,7 @@ static int core_scsi3_pro_preempt( pr_reg_nacl = pr_reg->pr_reg_nacl; pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; __core_scsi3_free_registration(dev, pr_reg, - (abort) ? &preempt_and_abort_list : + (preempt_type == PREEMPT_AND_ABORT) ? &preempt_and_abort_list : NULL, calling_it_nexus); released_regs++; } else { @@ -3054,7 +2848,7 @@ static int core_scsi3_pro_preempt( * 5.7.11.4 Preempting, Table 52 and Figure 7. * * For a ZERO SA Reservation key, release - * all other registrations and do an implict + * all other registrations and do an implicit * release of active persistent reservation. * * For a non-ZERO SA Reservation key, only @@ -3072,14 +2866,14 @@ static int core_scsi3_pro_preempt( pr_reg_nacl = pr_reg->pr_reg_nacl; pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; __core_scsi3_free_registration(dev, pr_reg, - (abort) ? &preempt_and_abort_list : + (preempt_type == PREEMPT_AND_ABORT) ? &preempt_and_abort_list : NULL, 0); released_regs++; } - if (!(calling_it_nexus)) + if (!calling_it_nexus) core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A, - ASCQ_2AH_RESERVATIONS_PREEMPTED); + ASCQ_2AH_REGISTRATIONS_PREEMPTED); } spin_unlock(&pr_tmpl->registration_lock); /* @@ -3089,10 +2883,10 @@ static int core_scsi3_pro_preempt( * registered reservation key, then the device server shall * complete the command with RESERVATION CONFLICT status. */ - if (!(released_regs)) { + if (!released_regs) { spin_unlock(&dev->dev_reservation_lock); core_scsi3_put_pr_reg(pr_reg_n); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return TCM_RESERVATION_CONFLICT; } /* * For an existing all registrants type reservation @@ -3101,27 +2895,20 @@ static int core_scsi3_pro_preempt( */ if (pr_res_holder && all_reg && !(sa_res_key)) { __core_scsi3_complete_pro_preempt(dev, pr_reg_n, - (abort) ? &preempt_and_abort_list : NULL, - type, scope, abort); + (preempt_type == PREEMPT_AND_ABORT) ? &preempt_and_abort_list : NULL, + type, scope, preempt_type); - if (abort) + if (preempt_type == PREEMPT_AND_ABORT) core_scsi3_release_preempt_and_abort( &preempt_and_abort_list, pr_reg_n); } spin_unlock(&dev->dev_reservation_lock); - if (pr_tmpl->pr_aptpl_active) { - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &pr_reg_n->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) - printk(KERN_INFO "SPC-3 PR: Updated APTPL" - " metadata for PREEMPT%s\n", (abort) ? - "_AND_ABORT" : ""); - } + if (pr_tmpl->pr_aptpl_active) + core_scsi3_update_and_write_aptpl(cmd->se_dev, true); core_scsi3_put_pr_reg(pr_reg_n); - core_scsi3_pr_generation(SE_DEV(cmd)); + core_scsi3_pr_generation(cmd->se_dev); return 0; } /* @@ -3182,7 +2969,7 @@ static int core_scsi3_pro_preempt( pr_reg_nacl = pr_reg->pr_reg_nacl; pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; __core_scsi3_free_registration(dev, pr_reg, - (abort) ? &preempt_and_abort_list : NULL, + (preempt_type == PREEMPT_AND_ABORT) ? &preempt_and_abort_list : NULL, calling_it_nexus); /* * e) Establish a unit attention condition for the initiator @@ -3191,7 +2978,7 @@ static int core_scsi3_pro_preempt( * additional sense code set to REGISTRATIONS PREEMPTED; */ core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A, - ASCQ_2AH_RESERVATIONS_PREEMPTED); + ASCQ_2AH_REGISTRATIONS_PREEMPTED); } spin_unlock(&pr_tmpl->registration_lock); /* @@ -3199,8 +2986,8 @@ static int core_scsi3_pro_preempt( * I_T nexus using the contents of the SCOPE and TYPE fields; */ __core_scsi3_complete_pro_preempt(dev, pr_reg_n, - (abort) ? &preempt_and_abort_list : NULL, - type, scope, abort); + (preempt_type == PREEMPT_AND_ABORT) ? &preempt_and_abort_list : NULL, + type, scope, preempt_type); /* * d) Process tasks as defined in 5.7.1; * e) See above.. @@ -3240,36 +3027,24 @@ static int core_scsi3_pro_preempt( * been removed from the primary pr_reg list), except the * new persistent reservation holder, the calling Initiator Port. */ - if (abort) { + if (preempt_type == PREEMPT_AND_ABORT) { core_tmr_lun_reset(dev, NULL, &preempt_and_abort_list, cmd); core_scsi3_release_preempt_and_abort(&preempt_and_abort_list, pr_reg_n); } - if (pr_tmpl->pr_aptpl_active) { - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &pr_reg_n->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) - printk("SPC-3 PR: Updated APTPL metadata for PREEMPT" - "%s\n", (abort) ? "_AND_ABORT" : ""); - } + if (pr_tmpl->pr_aptpl_active) + core_scsi3_update_and_write_aptpl(cmd->se_dev, true); core_scsi3_put_pr_reg(pr_reg_n); - core_scsi3_pr_generation(SE_DEV(cmd)); + core_scsi3_pr_generation(cmd->se_dev); return 0; } -static int core_scsi3_emulate_pro_preempt( - struct se_cmd *cmd, - int type, - int scope, - u64 res_key, - u64 sa_res_key, - int abort) +static sense_reason_t +core_scsi3_emulate_pro_preempt(struct se_cmd *cmd, int type, int scope, + u64 res_key, u64 sa_res_key, enum preempt_type preempt_type) { - int ret = 0; - switch (type) { case PR_TYPE_WRITE_EXCLUSIVE: case PR_TYPE_EXCLUSIVE_ACCESS: @@ -3277,104 +3052,108 @@ static int core_scsi3_emulate_pro_preempt( case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: - ret = core_scsi3_pro_preempt(cmd, type, scope, - res_key, sa_res_key, abort); - break; + return core_scsi3_pro_preempt(cmd, type, scope, res_key, + sa_res_key, preempt_type); default: - printk(KERN_ERR "SPC-3 PR: Unknown Service Action PREEMPT%s" - " Type: 0x%02x\n", (abort) ? "_AND_ABORT" : "", type); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + pr_err("SPC-3 PR: Unknown Service Action PREEMPT%s" + " Type: 0x%02x\n", (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", type); + return TCM_INVALID_CDB_FIELD; } - - return ret; } -static int core_scsi3_emulate_pro_register_and_move( - struct se_cmd *cmd, - u64 res_key, - u64 sa_res_key, - int aptpl, - int unreg) +static sense_reason_t +core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, + u64 sa_res_key, int aptpl, int unreg) { - struct se_session *se_sess = SE_SESS(cmd); - struct se_device *dev = SE_DEV(cmd); - struct se_dev_entry *se_deve, *dest_se_deve = NULL; - struct se_lun *se_lun = SE_LUN(cmd); + struct se_session *se_sess = cmd->se_sess; + struct se_device *dev = cmd->se_dev; + struct se_dev_entry *dest_se_deve = NULL; + struct se_lun *se_lun = cmd->se_lun; struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL; struct se_port *se_port; struct se_portal_group *se_tpg, *dest_se_tpg = NULL; struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops; struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg; - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + struct t10_reservation *pr_tmpl = &dev->t10_pr; + unsigned char *buf; unsigned char *initiator_str; char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; u32 tid_len, tmp_tid_len; - int new_reg = 0, type, scope, ret, matching_iname, prf_isid; + int new_reg = 0, type, scope, matching_iname; + sense_reason_t ret; unsigned short rtpi; unsigned char proto_ident; - if (!(se_sess) || !(se_lun)) { - printk(KERN_ERR "SPC-3 PR: se_sess || struct se_lun is NULL!\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!se_sess || !se_lun) { + pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } + memset(dest_iport, 0, 64); memset(i_buf, 0, PR_REG_ISID_ID_LEN); se_tpg = se_sess->se_tpg; - tf_ops = TPG_TFO(se_tpg); - se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; + tf_ops = se_tpg->se_tpg_tfo; /* * Follow logic from spc4r17 Section 5.7.8, Table 50 -- * Register behaviors for a REGISTER AND MOVE service action * * Locate the existing *pr_reg via struct se_node_acl pointers */ - pr_reg = core_scsi3_locate_pr_reg(SE_DEV(cmd), se_sess->se_node_acl, + pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, se_sess); - if (!(pr_reg)) { - printk(KERN_ERR "SPC-3 PR: Unable to locate PR_REGISTERED" + if (!pr_reg) { + pr_err("SPC-3 PR: Unable to locate PR_REGISTERED" " *pr_reg for REGISTER_AND_MOVE\n"); - return PYX_TRANSPORT_LU_COMM_FAILURE; + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } /* * The provided reservation key much match the existing reservation key * provided during this initiator's I_T nexus registration. */ if (res_key != pr_reg->pr_res_key) { - printk(KERN_WARNING "SPC-3 PR REGISTER_AND_MOVE: Received" + pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received" " res_key: 0x%016Lx does not match existing SA REGISTER" " res_key: 0x%016Lx\n", res_key, pr_reg->pr_res_key); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; + goto out_put_pr_reg; } /* * The service active reservation key needs to be non zero */ - if (!(sa_res_key)) { - printk(KERN_WARNING "SPC-3 PR REGISTER_AND_MOVE: Received zero" + if (!sa_res_key) { + pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received zero" " sa_res_key\n"); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_put_pr_reg; } + /* * Determine the Relative Target Port Identifier where the reservation * will be moved to for the TransportID containing SCSI initiator WWN * information. */ + buf = transport_kmap_data_sg(cmd); + if (!buf) { + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_put_pr_reg; + } + rtpi = (buf[18] & 0xff) << 8; rtpi |= buf[19] & 0xff; tid_len = (buf[20] & 0xff) << 24; tid_len |= (buf[21] & 0xff) << 16; tid_len |= (buf[22] & 0xff) << 8; tid_len |= buf[23] & 0xff; + transport_kunmap_data_sg(cmd); + buf = NULL; if ((tid_len + 24) != cmd->data_length) { - printk(KERN_ERR "SPC-3 PR: Illegal tid_len: %u + 24 byte header" + pr_err("SPC-3 PR: Illegal tid_len: %u + 24 byte header" " does not equal CDB data_length: %u\n", tid_len, cmd->data_length); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_put_pr_reg; } spin_lock(&dev->se_port_lock); @@ -3382,24 +3161,23 @@ static int core_scsi3_emulate_pro_register_and_move( if (se_port->sep_rtpi != rtpi) continue; dest_se_tpg = se_port->sep_tpg; - if (!(dest_se_tpg)) + if (!dest_se_tpg) continue; - dest_tf_ops = TPG_TFO(dest_se_tpg); - if (!(dest_tf_ops)) + dest_tf_ops = dest_se_tpg->se_tpg_tfo; + if (!dest_tf_ops) continue; atomic_inc(&dest_se_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&dev->se_port_lock); - ret = core_scsi3_tpg_depend_item(dest_se_tpg); - if (ret != 0) { - printk(KERN_ERR "core_scsi3_tpg_depend_item() failed" + if (core_scsi3_tpg_depend_item(dest_se_tpg)) { + pr_err("core_scsi3_tpg_depend_item() failed" " for dest_se_tpg\n"); atomic_dec(&dest_se_tpg->tpg_pr_ref_count); - smp_mb__after_atomic_dec(); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_LU_COMM_FAILURE; + smp_mb__after_atomic(); + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_put_pr_reg; } spin_lock(&dev->se_port_lock); @@ -3407,44 +3185,53 @@ static int core_scsi3_emulate_pro_register_and_move( } spin_unlock(&dev->se_port_lock); - if (!(dest_se_tpg) || (!dest_tf_ops)) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: Unable to locate" + if (!dest_se_tpg || !dest_tf_ops) { + pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate" " fabric ops from Relative Target Port Identifier:" " %hu\n", rtpi); - core_scsi3_put_pr_reg(pr_reg); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; + goto out_put_pr_reg; + } + + buf = transport_kmap_data_sg(cmd); + if (!buf) { + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + goto out_put_pr_reg; } proto_ident = (buf[24] & 0x0f); -#if 0 - printk("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:" + + pr_debug("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:" " 0x%02x\n", proto_ident); -#endif + if (proto_ident != dest_tf_ops->get_fabric_proto_ident(dest_se_tpg)) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: Received" + pr_err("SPC-3 PR REGISTER_AND_MOVE: Received" " proto_ident: 0x%02x does not match ident: 0x%02x" " from fabric: %s\n", proto_ident, dest_tf_ops->get_fabric_proto_ident(dest_se_tpg), dest_tf_ops->get_fabric_name()); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } if (dest_tf_ops->tpg_parse_pr_out_transport_id == NULL) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: Fabric does not" + pr_err("SPC-3 PR REGISTER_AND_MOVE: Fabric does not" " containg a valid tpg_parse_pr_out_transport_id" " function pointer\n"); - ret = PYX_TRANSPORT_LU_COMM_FAILURE; + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out; } initiator_str = dest_tf_ops->tpg_parse_pr_out_transport_id(dest_se_tpg, (const char *)&buf[24], &tmp_tid_len, &iport_ptr); - if (!(initiator_str)) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: Unable to locate" + if (!initiator_str) { + pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate" " initiator_str from Transport ID\n"); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } - printk(KERN_INFO "SPC-3 PR [%s] Extracted initiator %s identifier: %s" + transport_kunmap_data_sg(cmd); + buf = NULL; + + pr_debug("SPC-3 PR [%s] Extracted initiator %s identifier: %s" " %s\n", dest_tf_ops->get_fabric_name(), (iport_ptr != NULL) ? "port" : "device", initiator_str, (iport_ptr != NULL) ? iport_ptr : ""); @@ -3459,97 +3246,96 @@ static int core_scsi3_emulate_pro_register_and_move( pr_reg_nacl = pr_reg->pr_reg_nacl; matching_iname = (!strcmp(initiator_str, pr_reg_nacl->initiatorname)) ? 1 : 0; - if (!(matching_iname)) + if (!matching_iname) goto after_iport_check; - if (!(iport_ptr) || !(pr_reg->isid_present_at_reg)) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: TransportID: %s" + if (!iport_ptr || !pr_reg->isid_present_at_reg) { + pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s" " matches: %s on received I_T Nexus\n", initiator_str, pr_reg_nacl->initiatorname); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } - if (!(strcmp(iport_ptr, pr_reg->pr_reg_isid))) { - printk(KERN_ERR "SPC-3 PR REGISTER_AND_MOVE: TransportID: %s %s" + if (!strcmp(iport_ptr, pr_reg->pr_reg_isid)) { + pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s %s" " matches: %s %s on received I_T Nexus\n", initiator_str, iport_ptr, pr_reg_nacl->initiatorname, pr_reg->pr_reg_isid); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } after_iport_check: /* * Locate the destination struct se_node_acl from the received Transport ID */ - spin_lock_bh(&dest_se_tpg->acl_node_lock); + spin_lock_irq(&dest_se_tpg->acl_node_lock); dest_node_acl = __core_tpg_get_initiator_node_acl(dest_se_tpg, initiator_str); if (dest_node_acl) { atomic_inc(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } - spin_unlock_bh(&dest_se_tpg->acl_node_lock); + spin_unlock_irq(&dest_se_tpg->acl_node_lock); - if (!(dest_node_acl)) { - printk(KERN_ERR "Unable to locate %s dest_node_acl for" + if (!dest_node_acl) { + pr_err("Unable to locate %s dest_node_acl for" " TransportID%s\n", dest_tf_ops->get_fabric_name(), initiator_str); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } - ret = core_scsi3_nodeacl_depend_item(dest_node_acl); - if (ret != 0) { - printk(KERN_ERR "core_scsi3_nodeacl_depend_item() for" + + if (core_scsi3_nodeacl_depend_item(dest_node_acl)) { + pr_err("core_scsi3_nodeacl_depend_item() for" " dest_node_acl\n"); atomic_dec(&dest_node_acl->acl_pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dest_node_acl = NULL; - ret = PYX_TRANSPORT_LU_COMM_FAILURE; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } -#if 0 - printk(KERN_INFO "SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:" + + pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:" " %s from TransportID\n", dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname); -#endif + /* * Locate the struct se_dev_entry pointer for the matching RELATIVE TARGET * PORT IDENTIFIER. */ dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, rtpi); - if (!(dest_se_deve)) { - printk(KERN_ERR "Unable to locate %s dest_se_deve from RTPI:" + if (!dest_se_deve) { + pr_err("Unable to locate %s dest_se_deve from RTPI:" " %hu\n", dest_tf_ops->get_fabric_name(), rtpi); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } - ret = core_scsi3_lunacl_depend_item(dest_se_deve); - if (ret < 0) { - printk(KERN_ERR "core_scsi3_lunacl_depend_item() failed\n"); + if (core_scsi3_lunacl_depend_item(dest_se_deve)) { + pr_err("core_scsi3_lunacl_depend_item() failed\n"); atomic_dec(&dest_se_deve->pr_ref_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); dest_se_deve = NULL; - ret = PYX_TRANSPORT_LU_COMM_FAILURE; + ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; goto out; } -#if 0 - printk(KERN_INFO "SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN" + + pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN" " ACL for dest_se_deve->mapped_lun: %u\n", dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname, dest_se_deve->mapped_lun); -#endif + /* * A persistent reservation needs to already existing in order to * successfully complete the REGISTER_AND_MOVE service action.. */ spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; - if (!(pr_res_holder)) { - printk(KERN_WARNING "SPC-3 PR REGISTER_AND_MOVE: No reservation" + if (!pr_res_holder) { + pr_warn("SPC-3 PR REGISTER_AND_MOVE: No reservation" " currently held\n"); spin_unlock(&dev->dev_reservation_lock); - ret = PYX_TRANSPORT_INVALID_CDB_FIELD; + ret = TCM_INVALID_CDB_FIELD; goto out; } /* @@ -3559,10 +3345,10 @@ after_iport_check: * Register behaviors for a REGISTER AND MOVE service action */ if (pr_res_holder != pr_reg) { - printk(KERN_WARNING "SPC-3 PR REGISTER_AND_MOVE: Calling I_T" + pr_warn("SPC-3 PR REGISTER_AND_MOVE: Calling I_T" " Nexus is not reservation holder\n"); spin_unlock(&dev->dev_reservation_lock); - ret = PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; goto out; } /* @@ -3576,11 +3362,11 @@ after_iport_check: */ if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { - printk(KERN_WARNING "SPC-3 PR REGISTER_AND_MOVE: Unable to move" + pr_warn("SPC-3 PR REGISTER_AND_MOVE: Unable to move" " reservation for type: %s\n", core_scsi3_pr_dump_type(pr_res_holder->pr_res_type)); spin_unlock(&dev->dev_reservation_lock); - ret = PYX_TRANSPORT_RESERVATION_CONFLICT; + ret = TCM_RESERVATION_CONFLICT; goto out; } pr_res_nacl = pr_res_holder->pr_reg_nacl; @@ -3611,13 +3397,12 @@ after_iport_check: */ dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl, iport_ptr); - if (!(dest_pr_reg)) { - ret = core_scsi3_alloc_registration(SE_DEV(cmd), + if (!dest_pr_reg) { + if (core_scsi3_alloc_registration(cmd->se_dev, dest_node_acl, dest_se_deve, iport_ptr, - sa_res_key, 0, aptpl, 2, 1); - if (ret != 0) { + sa_res_key, 0, aptpl, 2, 1)) { spin_unlock(&dev->dev_reservation_lock); - ret = PYX_TRANSPORT_INVALID_PARAMETER_LIST; + ret = TCM_INVALID_PARAMETER_LIST; goto out; } dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl, @@ -3639,24 +3424,23 @@ after_iport_check: dest_pr_reg->pr_res_holder = 1; dest_pr_reg->pr_res_type = type; pr_reg->pr_res_scope = scope; - prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], - PR_REG_ISID_ID_LEN); + core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); /* * Increment PRGeneration for existing registrations.. */ - if (!(new_reg)) + if (!new_reg) dest_pr_reg->pr_res_generation = pr_tmpl->pr_generation++; spin_unlock(&dev->dev_reservation_lock); - printk(KERN_INFO "SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE" + pr_debug("SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE" " created new reservation holder TYPE: %s on object RTPI:" " %hu PRGeneration: 0x%08x\n", dest_tf_ops->get_fabric_name(), core_scsi3_pr_dump_type(type), rtpi, dest_pr_reg->pr_res_generation); - printk(KERN_INFO "SPC-3 PR Successfully moved reservation from" + pr_debug("SPC-3 PR Successfully moved reservation from" " %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n", tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname, - (prf_isid) ? &i_buf[0] : "", dest_tf_ops->get_fabric_name(), + i_buf, dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname, (iport_ptr != NULL) ? iport_ptr : ""); /* @@ -3677,33 +3461,22 @@ after_iport_check: } else core_scsi3_put_pr_reg(pr_reg); - /* - * Clear the APTPL metadata if APTPL has been disabled, otherwise - * write out the updated metadata to struct file for this SCSI device. - */ - if (!(aptpl)) { - pr_tmpl->pr_aptpl_active = 0; - core_scsi3_update_and_write_aptpl(SE_DEV(cmd), NULL, 0); - printk("SPC-3 PR: Set APTPL Bit Deactivated for" - " REGISTER_AND_MOVE\n"); - } else { - pr_tmpl->pr_aptpl_active = 1; - ret = core_scsi3_update_and_write_aptpl(SE_DEV(cmd), - &dest_pr_reg->pr_aptpl_buf[0], - pr_tmpl->pr_aptpl_buf_len); - if (!(ret)) - printk("SPC-3 PR: Set APTPL Bit Activated for" - " REGISTER_AND_MOVE\n"); - } + core_scsi3_update_and_write_aptpl(cmd->se_dev, aptpl); + + transport_kunmap_data_sg(cmd); core_scsi3_put_pr_reg(dest_pr_reg); return 0; out: + if (buf) + transport_kunmap_data_sg(cmd); if (dest_se_deve) core_scsi3_lunacl_undepend_item(dest_se_deve); if (dest_node_acl) core_scsi3_nodeacl_undepend_item(dest_node_acl); core_scsi3_tpg_undepend_item(dest_se_tpg); + +out_put_pr_reg: core_scsi3_put_pr_reg(pr_reg); return ret; } @@ -3721,30 +3494,56 @@ static unsigned long long core_scsi3_extract_reservation_key(unsigned char *cdb) /* * See spc4r17 section 6.14 Table 170 */ -static int core_scsi3_emulate_pr_out(struct se_cmd *cmd, unsigned char *cdb) +sense_reason_t +target_scsi3_emulate_pr_out(struct se_cmd *cmd) { - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + unsigned char *cdb = &cmd->t_task_cdb[0]; + unsigned char *buf; u64 res_key, sa_res_key; int sa, scope, type, aptpl; int spec_i_pt = 0, all_tg_pt = 0, unreg = 0; + sense_reason_t ret; + + /* + * Following spc2r20 5.5.1 Reservations overview: + * + * If a logical unit has been reserved by any RESERVE command and is + * still reserved by any initiator, all PERSISTENT RESERVE IN and all + * PERSISTENT RESERVE OUT commands shall conflict regardless of + * initiator or service action and shall terminate with a RESERVATION + * CONFLICT status. + */ + if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) { + pr_err("Received PERSISTENT_RESERVE CDB while legacy" + " SPC-2 reservation is held, returning" + " RESERVATION_CONFLICT\n"); + return TCM_RESERVATION_CONFLICT; + } + /* * FIXME: A NULL struct se_session pointer means an this is not coming from * a $FABRIC_MOD's nexus, but from internal passthrough ops. */ - if (!(SE_SESS(cmd))) - return PYX_TRANSPORT_LU_COMM_FAILURE; + if (!cmd->se_sess) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; if (cmd->data_length < 24) { - printk(KERN_WARNING "SPC-PR: Recieved PR OUT parameter list" + pr_warn("SPC-PR: Received PR OUT parameter list" " length too small: %u\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; } + /* * From the PERSISTENT_RESERVE_OUT command descriptor block (CDB) */ sa = (cdb[1] & 0x1f); scope = (cdb[2] & 0xf0); type = (cdb[2] & 0x0f); + + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + /* * From PERSISTENT_RESERVE_OUT parameter list (payload) */ @@ -3762,11 +3561,15 @@ static int core_scsi3_emulate_pr_out(struct se_cmd *cmd, unsigned char *cdb) aptpl = (buf[17] & 0x01); unreg = (buf[17] & 0x02); } + transport_kunmap_data_sg(cmd); + buf = NULL; + /* * SPEC_I_PT=1 is only valid for Service action: REGISTER */ if (spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER)) - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; + /* * From spc4r17 section 6.14: * @@ -3776,12 +3579,13 @@ static int core_scsi3_emulate_pr_out(struct se_cmd *cmd, unsigned char *cdb) * the sense key set to ILLEGAL REQUEST, and the additional sense * code set to PARAMETER LIST LENGTH ERROR. */ - if (!(spec_i_pt) && ((cdb[1] & 0x1f) != PRO_REGISTER_AND_MOVE) && + if (!spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER_AND_MOVE) && (cmd->data_length != 24)) { - printk(KERN_WARNING "SPC-PR: Recieved PR OUT illegal parameter" + pr_warn("SPC-PR: Received PR OUT illegal parameter" " list length: %u\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_PARAMETER_LIST; + return TCM_INVALID_PARAMETER_LIST; } + /* * (core_scsi3_emulate_pro_* function parameters * are defined by spc4r17 Table 174: @@ -3789,35 +3593,43 @@ static int core_scsi3_emulate_pr_out(struct se_cmd *cmd, unsigned char *cdb) */ switch (sa) { case PRO_REGISTER: - return core_scsi3_emulate_pro_register(cmd, - res_key, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 0); + ret = core_scsi3_emulate_pro_register(cmd, + res_key, sa_res_key, aptpl, all_tg_pt, spec_i_pt, REGISTER); + break; case PRO_RESERVE: - return core_scsi3_emulate_pro_reserve(cmd, - type, scope, res_key); + ret = core_scsi3_emulate_pro_reserve(cmd, type, scope, res_key); + break; case PRO_RELEASE: - return core_scsi3_emulate_pro_release(cmd, - type, scope, res_key); + ret = core_scsi3_emulate_pro_release(cmd, type, scope, res_key); + break; case PRO_CLEAR: - return core_scsi3_emulate_pro_clear(cmd, res_key); + ret = core_scsi3_emulate_pro_clear(cmd, res_key); + break; case PRO_PREEMPT: - return core_scsi3_emulate_pro_preempt(cmd, type, scope, - res_key, sa_res_key, 0); + ret = core_scsi3_emulate_pro_preempt(cmd, type, scope, + res_key, sa_res_key, PREEMPT); + break; case PRO_PREEMPT_AND_ABORT: - return core_scsi3_emulate_pro_preempt(cmd, type, scope, - res_key, sa_res_key, 1); + ret = core_scsi3_emulate_pro_preempt(cmd, type, scope, + res_key, sa_res_key, PREEMPT_AND_ABORT); + break; case PRO_REGISTER_AND_IGNORE_EXISTING_KEY: - return core_scsi3_emulate_pro_register(cmd, - 0, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 1); + ret = core_scsi3_emulate_pro_register(cmd, + 0, sa_res_key, aptpl, all_tg_pt, spec_i_pt, REGISTER_AND_IGNORE_EXISTING_KEY); + break; case PRO_REGISTER_AND_MOVE: - return core_scsi3_emulate_pro_register_and_move(cmd, res_key, + ret = core_scsi3_emulate_pro_register_and_move(cmd, res_key, sa_res_key, aptpl, unreg); + break; default: - printk(KERN_ERR "Unknown PERSISTENT_RESERVE_OUT service" + pr_err("Unknown PERSISTENT_RESERVE_OUT service" " action: 0x%02x\n", cdb[1] & 0x1f); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } - return PYX_TRANSPORT_INVALID_CDB_FIELD; + if (!ret) + target_complete_cmd(cmd, GOOD); + return ret; } /* @@ -3825,27 +3637,31 @@ static int core_scsi3_emulate_pr_out(struct se_cmd *cmd, unsigned char *cdb) * * See spc4r17 section 5.7.6.2 and section 6.13.2, Table 160 */ -static int core_scsi3_pri_read_keys(struct se_cmd *cmd) +static sense_reason_t +core_scsi3_pri_read_keys(struct se_cmd *cmd) { - struct se_device *se_dev = SE_DEV(cmd); - struct se_subsystem_dev *su_dev = SU_DEV(se_dev); + struct se_device *dev = cmd->se_dev; struct t10_pr_registration *pr_reg; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + unsigned char *buf; u32 add_len = 0, off = 8; if (cmd->data_length < 8) { - printk(KERN_ERR "PRIN SA READ_KEYS SCSI Data Length: %u" + pr_err("PRIN SA READ_KEYS SCSI Data Length: %u" " too small\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } - buf[0] = ((T10_RES(su_dev)->pr_generation >> 24) & 0xff); - buf[1] = ((T10_RES(su_dev)->pr_generation >> 16) & 0xff); - buf[2] = ((T10_RES(su_dev)->pr_generation >> 8) & 0xff); - buf[3] = (T10_RES(su_dev)->pr_generation & 0xff); + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff); + buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff); + buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff); + buf[3] = (dev->t10_pr.pr_generation & 0xff); - spin_lock(&T10_RES(su_dev)->registration_lock); - list_for_each_entry(pr_reg, &T10_RES(su_dev)->registration_list, + spin_lock(&dev->t10_pr.registration_lock); + list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, pr_reg_list) { /* * Check for overflow of 8byte PRI READ_KEYS payload and @@ -3865,13 +3681,15 @@ static int core_scsi3_pri_read_keys(struct se_cmd *cmd) add_len += 8; } - spin_unlock(&T10_RES(su_dev)->registration_lock); + spin_unlock(&dev->t10_pr.registration_lock); buf[4] = ((add_len >> 24) & 0xff); buf[5] = ((add_len >> 16) & 0xff); buf[6] = ((add_len >> 8) & 0xff); buf[7] = (add_len & 0xff); + transport_kunmap_data_sg(cmd); + return 0; } @@ -3880,29 +3698,33 @@ static int core_scsi3_pri_read_keys(struct se_cmd *cmd) * * See spc4r17 section 5.7.6.3 and section 6.13.3.2 Table 161 and 162 */ -static int core_scsi3_pri_read_reservation(struct se_cmd *cmd) +static sense_reason_t +core_scsi3_pri_read_reservation(struct se_cmd *cmd) { - struct se_device *se_dev = SE_DEV(cmd); - struct se_subsystem_dev *su_dev = SU_DEV(se_dev); + struct se_device *dev = cmd->se_dev; struct t10_pr_registration *pr_reg; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + unsigned char *buf; u64 pr_res_key; u32 add_len = 16; /* Hardcoded to 16 when a reservation is held. */ if (cmd->data_length < 8) { - printk(KERN_ERR "PRIN SA READ_RESERVATIONS SCSI Data Length: %u" + pr_err("PRIN SA READ_RESERVATIONS SCSI Data Length: %u" " too small\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } - buf[0] = ((T10_RES(su_dev)->pr_generation >> 24) & 0xff); - buf[1] = ((T10_RES(su_dev)->pr_generation >> 16) & 0xff); - buf[2] = ((T10_RES(su_dev)->pr_generation >> 8) & 0xff); - buf[3] = (T10_RES(su_dev)->pr_generation & 0xff); + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff); + buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff); + buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff); + buf[3] = (dev->t10_pr.pr_generation & 0xff); - spin_lock(&se_dev->dev_reservation_lock); - pr_reg = se_dev->dev_pr_res_holder; - if ((pr_reg)) { + spin_lock(&dev->dev_reservation_lock); + pr_reg = dev->dev_pr_res_holder; + if (pr_reg) { /* * Set the hardcoded Additional Length */ @@ -3911,10 +3733,9 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd) buf[6] = ((add_len >> 8) & 0xff); buf[7] = (add_len & 0xff); - if (cmd->data_length < 22) { - spin_unlock(&se_dev->dev_reservation_lock); - return 0; - } + if (cmd->data_length < 22) + goto err; + /* * Set the Reservation key. * @@ -3951,7 +3772,10 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd) buf[21] = (pr_reg->pr_res_scope & 0xf0) | (pr_reg->pr_res_type & 0x0f); } - spin_unlock(&se_dev->dev_reservation_lock); + +err: + spin_unlock(&dev->dev_reservation_lock); + transport_kunmap_data_sg(cmd); return 0; } @@ -3961,19 +3785,24 @@ static int core_scsi3_pri_read_reservation(struct se_cmd *cmd) * * See spc4r17 section 6.13.4 Table 165 */ -static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd) +static sense_reason_t +core_scsi3_pri_report_capabilities(struct se_cmd *cmd) { - struct se_device *dev = SE_DEV(cmd); - struct t10_reservation_template *pr_tmpl = &SU_DEV(dev)->t10_reservation; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + struct se_device *dev = cmd->se_dev; + struct t10_reservation *pr_tmpl = &dev->t10_pr; + unsigned char *buf; u16 add_len = 8; /* Hardcoded to 8. */ if (cmd->data_length < 6) { - printk(KERN_ERR "PRIN SA REPORT_CAPABILITIES SCSI Data Length:" + pr_err("PRIN SA REPORT_CAPABILITIES SCSI Data Length:" " %u too small\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + buf[0] = ((add_len << 8) & 0xff); buf[1] = (add_len & 0xff); buf[2] |= 0x10; /* CRH: Compatible Reservation Hanlding bit. */ @@ -4004,6 +3833,8 @@ static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd) buf[4] |= 0x02; /* PR_TYPE_WRITE_EXCLUSIVE */ buf[5] |= 0x01; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */ + transport_kunmap_data_sg(cmd); + return 0; } @@ -4012,29 +3843,33 @@ static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd) * * See spc4r17 section 6.13.5 Table 168 and 169 */ -static int core_scsi3_pri_read_full_status(struct se_cmd *cmd) +static sense_reason_t +core_scsi3_pri_read_full_status(struct se_cmd *cmd) { - struct se_device *se_dev = SE_DEV(cmd); + struct se_device *dev = cmd->se_dev; struct se_node_acl *se_nacl; - struct se_subsystem_dev *su_dev = SU_DEV(se_dev); struct se_portal_group *se_tpg; struct t10_pr_registration *pr_reg, *pr_reg_tmp; - struct t10_reservation_template *pr_tmpl = &SU_DEV(se_dev)->t10_reservation; - unsigned char *buf = (unsigned char *)T_TASK(cmd)->t_task_buf; + struct t10_reservation *pr_tmpl = &dev->t10_pr; + unsigned char *buf; u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len; u32 off = 8; /* off into first Full Status descriptor */ int format_code = 0; if (cmd->data_length < 8) { - printk(KERN_ERR "PRIN SA READ_FULL_STATUS SCSI Data Length: %u" + pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u" " too small\n", cmd->data_length); - return PYX_TRANSPORT_INVALID_CDB_FIELD; + return TCM_INVALID_CDB_FIELD; } - buf[0] = ((T10_RES(su_dev)->pr_generation >> 24) & 0xff); - buf[1] = ((T10_RES(su_dev)->pr_generation >> 16) & 0xff); - buf[2] = ((T10_RES(su_dev)->pr_generation >> 8) & 0xff); - buf[3] = (T10_RES(su_dev)->pr_generation & 0xff); + buf = transport_kmap_data_sg(cmd); + if (!buf) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff); + buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff); + buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff); + buf[3] = (dev->t10_pr.pr_generation & 0xff); spin_lock(&pr_tmpl->registration_lock); list_for_each_entry_safe(pr_reg, pr_reg_tmp, @@ -4045,21 +3880,21 @@ static int core_scsi3_pri_read_full_status(struct se_cmd *cmd) add_desc_len = 0; atomic_inc(&pr_reg->pr_res_holders); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&pr_tmpl->registration_lock); /* * Determine expected length of $FABRIC_MOD specific * TransportID full status descriptor.. */ - exp_desc_len = TPG_TFO(se_tpg)->tpg_get_pr_transport_id_len( + exp_desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id_len( se_tpg, se_nacl, pr_reg, &format_code); if ((exp_desc_len + add_len) > cmd->data_length) { - printk(KERN_WARNING "SPC-3 PRIN READ_FULL_STATUS ran" + pr_warn("SPC-3 PRIN READ_FULL_STATUS ran" " out of buffer: %d\n", cmd->data_length); spin_lock(&pr_tmpl->registration_lock); atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); break; } /* @@ -4105,23 +3940,23 @@ static int core_scsi3_pri_read_full_status(struct se_cmd *cmd) * bit is set to one, the contents of the RELATIVE TARGET PORT * IDENTIFIER field are not defined by this standard. */ - if (!(pr_reg->pr_reg_all_tg_pt)) { + if (!pr_reg->pr_reg_all_tg_pt) { struct se_port *port = pr_reg->pr_reg_tg_pt_lun->lun_sep; buf[off++] = ((port->sep_rtpi >> 8) & 0xff); buf[off++] = (port->sep_rtpi & 0xff); } else - off += 2; /* Skip over RELATIVE TARGET PORT IDENTIFER */ + off += 2; /* Skip over RELATIVE TARGET PORT IDENTIFIER */ /* * Now, have the $FABRIC_MOD fill in the protocol identifier */ - desc_len = TPG_TFO(se_tpg)->tpg_get_pr_transport_id(se_tpg, + desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id(se_tpg, se_nacl, pr_reg, &format_code, &buf[off+4]); spin_lock(&pr_tmpl->registration_lock); atomic_dec(&pr_reg->pr_res_holders); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); /* * Set the ADDITIONAL DESCRIPTOR LENGTH */ @@ -4150,32 +3985,16 @@ static int core_scsi3_pri_read_full_status(struct se_cmd *cmd) buf[6] = ((add_len >> 8) & 0xff); buf[7] = (add_len & 0xff); + transport_kunmap_data_sg(cmd); + return 0; } -static int core_scsi3_emulate_pr_in(struct se_cmd *cmd, unsigned char *cdb) +sense_reason_t +target_scsi3_emulate_pr_in(struct se_cmd *cmd) { - switch (cdb[1] & 0x1f) { - case PRI_READ_KEYS: - return core_scsi3_pri_read_keys(cmd); - case PRI_READ_RESERVATION: - return core_scsi3_pri_read_reservation(cmd); - case PRI_REPORT_CAPABILITIES: - return core_scsi3_pri_report_capabilities(cmd); - case PRI_READ_FULL_STATUS: - return core_scsi3_pri_read_full_status(cmd); - default: - printk(KERN_ERR "Unknown PERSISTENT_RESERVE_IN service" - " action: 0x%02x\n", cdb[1] & 0x1f); - return PYX_TRANSPORT_INVALID_CDB_FIELD; - } + sense_reason_t ret; -} - -int core_scsi3_emulate_pr(struct se_cmd *cmd) -{ - unsigned char *cdb = &T_TASK(cmd)->t_task_cdb[0]; - struct se_device *dev = cmd->se_dev; /* * Following spc2r20 5.5.1 Reservations overview: * @@ -4185,68 +4004,56 @@ int core_scsi3_emulate_pr(struct se_cmd *cmd) * initiator or service action and shall terminate with a RESERVATION * CONFLICT status. */ - if (dev->dev_flags & DF_SPC2_RESERVATIONS) { - printk(KERN_ERR "Received PERSISTENT_RESERVE CDB while legacy" + if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) { + pr_err("Received PERSISTENT_RESERVE CDB while legacy" " SPC-2 reservation is held, returning" " RESERVATION_CONFLICT\n"); - return PYX_TRANSPORT_RESERVATION_CONFLICT; + return TCM_RESERVATION_CONFLICT; } - return (cdb[0] == PERSISTENT_RESERVE_OUT) ? - core_scsi3_emulate_pr_out(cmd, cdb) : - core_scsi3_emulate_pr_in(cmd, cdb); -} + switch (cmd->t_task_cdb[1] & 0x1f) { + case PRI_READ_KEYS: + ret = core_scsi3_pri_read_keys(cmd); + break; + case PRI_READ_RESERVATION: + ret = core_scsi3_pri_read_reservation(cmd); + break; + case PRI_REPORT_CAPABILITIES: + ret = core_scsi3_pri_report_capabilities(cmd); + break; + case PRI_READ_FULL_STATUS: + ret = core_scsi3_pri_read_full_status(cmd); + break; + default: + pr_err("Unknown PERSISTENT_RESERVE_IN service" + " action: 0x%02x\n", cmd->t_task_cdb[1] & 0x1f); + return TCM_INVALID_CDB_FIELD; + } -static int core_pt_reservation_check(struct se_cmd *cmd, u32 *pr_res_type) -{ - return 0; + if (!ret) + target_complete_cmd(cmd, GOOD); + return ret; } -static int core_pt_seq_non_holder( - struct se_cmd *cmd, - unsigned char *cdb, - u32 pr_reg_type) +sense_reason_t +target_check_reservation(struct se_cmd *cmd) { - return 0; -} + struct se_device *dev = cmd->se_dev; + sense_reason_t ret; -int core_setup_reservations(struct se_device *dev, int force_pt) -{ - struct se_subsystem_dev *su_dev = dev->se_sub_dev; - struct t10_reservation_template *rest = &su_dev->t10_reservation; - /* - * If this device is from Target_Core_Mod/pSCSI, use the reservations - * of the Underlying SCSI hardware. In Linux/SCSI terms, this can - * cause a problem because libata and some SATA RAID HBAs appear - * under Linux/SCSI, but to emulate reservations themselves. - */ - if (((TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) && - !(DEV_ATTRIB(dev)->emulate_reservations)) || force_pt) { - rest->res_type = SPC_PASSTHROUGH; - rest->pr_ops.t10_reservation_check = &core_pt_reservation_check; - rest->pr_ops.t10_seq_non_holder = &core_pt_seq_non_holder; - printk(KERN_INFO "%s: Using SPC_PASSTHROUGH, no reservation" - " emulation\n", TRANSPORT(dev)->name); + if (!cmd->se_sess) + return 0; + if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) + return 0; + if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) return 0; - } - /* - * If SPC-3 or above is reported by real or emulated struct se_device, - * use emulated Persistent Reservations. - */ - if (TRANSPORT(dev)->get_device_rev(dev) >= SCSI_3) { - rest->res_type = SPC3_PERSISTENT_RESERVATIONS; - rest->pr_ops.t10_reservation_check = &core_scsi3_pr_reservation_check; - rest->pr_ops.t10_seq_non_holder = &core_scsi3_pr_seq_non_holder; - printk(KERN_INFO "%s: Using SPC3_PERSISTENT_RESERVATIONS" - " emulation\n", TRANSPORT(dev)->name); - } else { - rest->res_type = SPC2_RESERVATIONS; - rest->pr_ops.t10_reservation_check = &core_scsi2_reservation_check; - rest->pr_ops.t10_seq_non_holder = - &core_scsi2_reservation_seq_non_holder; - printk(KERN_INFO "%s: Using SPC2_RESERVATIONS emulation\n", - TRANSPORT(dev)->name); - } - return 0; + spin_lock(&dev->dev_reservation_lock); + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) + ret = target_scsi2_reservation_check(cmd); + else + ret = target_scsi3_pr_reservation_check(cmd); + spin_unlock(&dev->dev_reservation_lock); + + return ret; } |