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target: pass sense_reason as a return value 

Pass the sense reason as an explicit return value from the I/O submission
path instead of storing it in struct se_cmd and using negative return
values.  This cleans up a lot of the code pathes, and with the sparse
annotations for the new sense_reason_t type allows for much better
error checking.

(nab: Convert spc_emulate_modesense + spc_emulate_modeselect to use
      sense_reason_t with Roland's MODE SELECT changes)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2012-11-06 12:24:09 -08:00 committed by Nicholas Bellinger
parent fecae40abb
commit de103c93af
24 changed files with 856 additions and 1074 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/infiniband/ulp/srpt/ib_srpt.c
View File

@ -1730,7 +1730,7 @@ static int srpt_handle_cmd(struct srpt_rdma_ch *ch,
uint64_t unpacked_lun;
u64 data_len;
enum dma_data_direction dir;
int ret;
sense_reason_t ret;
BUG_ON(!send_ioctx);
@ -1755,12 +1755,10 @@ static int srpt_handle_cmd(struct srpt_rdma_ch *ch,
break;
}
ret = srpt_get_desc_tbl(send_ioctx, srp_cmd, &dir, &data_len);
if (ret) {
if (srpt_get_desc_tbl(send_ioctx, srp_cmd, &dir, &data_len)) {
printk(KERN_ERR "0x%llx: parsing SRP descriptor table failed.\n",
srp_cmd->tag);
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
ret = TCM_INVALID_CDB_FIELD;
kref_put(&send_ioctx->kref, srpt_put_send_ioctx_kref);
goto send_sense;
}
@ -1769,26 +1767,26 @@ static int srpt_handle_cmd(struct srpt_rdma_ch *ch,
cmd->data_direction = dir;
unpacked_lun = srpt_unpack_lun((uint8_t *)&srp_cmd->lun,
sizeof(srp_cmd->lun));
if (transport_lookup_cmd_lun(cmd, unpacked_lun) < 0) {
ret = transport_lookup_cmd_lun(cmd, unpacked_lun);
if (ret) {
kref_put(&send_ioctx->kref, srpt_put_send_ioctx_kref);
goto send_sense;
}
ret = target_setup_cmd_from_cdb(cmd, srp_cmd->cdb);
if (ret < 0) {
if (ret) {
kref_put(&send_ioctx->kref, srpt_put_send_ioctx_kref);
if (cmd->se_cmd_flags & SCF_SCSI_RESERVATION_CONFLICT) {
if (ret == TCM_RESERVATION_CONFLICT) {
srpt_queue_status(cmd);
return 0;
} else
goto send_sense;
}
goto send_sense;
}
transport_handle_cdb_direct(cmd);
return 0;
send_sense:
transport_send_check_condition_and_sense(cmd, cmd->scsi_sense_reason,
0);
transport_send_check_condition_and_sense(cmd, ret, 0);
return -1;
}
@ -1882,16 +1880,14 @@ static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
send_ioctx->tag = srp_tsk->tag;
tcm_tmr = srp_tmr_to_tcm(srp_tsk->tsk_mgmt_func);
if (tcm_tmr < 0) {
send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
send_ioctx->cmd.se_tmr_req->response =
TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
goto process_tmr;
goto fail;
}
res = core_tmr_alloc_req(cmd, NULL, tcm_tmr, GFP_KERNEL);
if (res < 0) {
send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
send_ioctx->cmd.se_tmr_req->response = TMR_FUNCTION_REJECTED;
goto process_tmr;
goto fail;
}
unpacked_lun = srpt_unpack_lun((uint8_t *)&srp_tsk->lun,
@ -1899,22 +1895,19 @@ static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
res = transport_lookup_tmr_lun(&send_ioctx->cmd, unpacked_lun);
if (res) {
pr_debug("rejecting TMR for LUN %lld\n", unpacked_lun);
send_ioctx->cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
send_ioctx->cmd.se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
goto process_tmr;
goto fail;
}
if (srp_tsk->tsk_mgmt_func == SRP_TSK_ABORT_TASK)
srpt_rx_mgmt_fn_tag(send_ioctx, srp_tsk->task_tag);
process_tmr:
kref_get(&send_ioctx->kref);
if (!(send_ioctx->cmd.se_cmd_flags & SCF_SCSI_CDB_EXCEPTION))
transport_generic_handle_tmr(&send_ioctx->cmd);
else
transport_send_check_condition_and_sense(cmd,
cmd->scsi_sense_reason, 0);
transport_generic_handle_tmr(&send_ioctx->cmd);
return;
fail:
kref_get(&send_ioctx->kref);
transport_send_check_condition_and_sense(cmd, 0, 0); // XXX:
}
/**

4
drivers/scsi/qla2xxx/tcm_qla2xxx.c
View File

@ -620,8 +620,8 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
return;
}
cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
transport_generic_request_failure(&cmd->se_cmd);
transport_generic_request_failure(&cmd->se_cmd,
TCM_CHECK_CONDITION_ABORT_CMD);
return;
}

80
drivers/target/iscsi/iscsi_target.c
View File

@ -767,9 +767,8 @@ static int iscsit_handle_scsi_cmd(
struct iscsi_conn *conn,
unsigned char *buf)
{
int data_direction, cmdsn_ret = 0, immed_ret, ret, transport_ret;
int dump_immediate_data = 0, send_check_condition = 0, payload_length;
struct iscsi_cmd *cmd = NULL;
int data_direction, payload_length, cmdsn_ret = 0, immed_ret;
struct iscsi_cmd *cmd = NULL;
struct iscsi_scsi_req *hdr;
int iscsi_task_attr;
int sam_task_attr;
@ -956,38 +955,26 @@ done:
" ExpXferLen: %u, Length: %u, CID: %hu\n", hdr->itt,
hdr->cmdsn, hdr->data_length, payload_length, conn->cid);
/*
* The CDB is going to an se_device_t.
*/
ret = transport_lookup_cmd_lun(&cmd->se_cmd,
scsilun_to_int(&hdr->lun));
if (ret < 0) {
if (cmd->se_cmd.scsi_sense_reason == TCM_NON_EXISTENT_LUN) {
pr_debug("Responding to non-acl'ed,"
" non-existent or non-exported iSCSI LUN:"
" 0x%016Lx\n", get_unaligned_le64(&hdr->lun));
cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd,
scsilun_to_int(&hdr->lun));
if (cmd->sense_reason)
goto attach_cmd;
cmd->sense_reason = target_setup_cmd_from_cdb(&cmd->se_cmd, hdr->cdb);
if (cmd->sense_reason) {
if (cmd->sense_reason == TCM_OUT_OF_RESOURCES) {
return iscsit_add_reject_from_cmd(
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 1, buf, cmd);
}
send_check_condition = 1;
goto attach_cmd;
}
transport_ret = target_setup_cmd_from_cdb(&cmd->se_cmd, hdr->cdb);
if (transport_ret == -ENOMEM) {
if (iscsit_build_pdu_and_seq_lists(cmd, payload_length) < 0) {
return iscsit_add_reject_from_cmd(
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 1, buf, cmd);
} else if (transport_ret < 0) {
/*
* Unsupported SAM Opcode. CHECK_CONDITION will be sent
* in iscsit_execute_cmd() during the CmdSN OOO Execution
* Mechinism.
*/
send_check_condition = 1;
} else {
if (iscsit_build_pdu_and_seq_lists(cmd, payload_length) < 0)
return iscsit_add_reject_from_cmd(
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 1, buf, cmd);
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 1, buf, cmd);
}
attach_cmd:
@ -1000,11 +987,12 @@ attach_cmd:
*/
core_alua_check_nonop_delay(&cmd->se_cmd);
ret = iscsit_allocate_iovecs(cmd);
if (ret < 0)
if (iscsit_allocate_iovecs(cmd) < 0) {
return iscsit_add_reject_from_cmd(
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
1, 0, buf, cmd);
}
/*
* Check the CmdSN against ExpCmdSN/MaxCmdSN here if
* the Immediate Bit is not set, and no Immediate
@ -1031,10 +1019,7 @@ attach_cmd:
* If no Immediate Data is attached, it's OK to return now.
*/
if (!cmd->immediate_data) {
if (send_check_condition)
return 0;
if (cmd->unsolicited_data) {
if (!cmd->sense_reason && cmd->unsolicited_data) {
iscsit_set_dataout_sequence_values(cmd);
spin_lock_bh(&cmd->dataout_timeout_lock);
@ -1050,19 +1035,17 @@ attach_cmd:
* thread. They are processed in CmdSN order by
* iscsit_check_received_cmdsn() below.
*/
if (send_check_condition) {
if (cmd->sense_reason) {
immed_ret = IMMEDIATE_DATA_NORMAL_OPERATION;
dump_immediate_data = 1;
goto after_immediate_data;
}
/*
* Call directly into transport_generic_new_cmd() to perform
* the backend memory allocation.
*/
ret = transport_generic_new_cmd(&cmd->se_cmd);
if (ret < 0) {
cmd->sense_reason = transport_generic_new_cmd(&cmd->se_cmd);
if (cmd->sense_reason) {
immed_ret = IMMEDIATE_DATA_NORMAL_OPERATION;
dump_immediate_data = 1;
goto after_immediate_data;
}
@ -1079,7 +1062,7 @@ after_immediate_data:
* Special case for Unsupported SAM WRITE Opcodes
* and ImmediateData=Yes.
*/
if (dump_immediate_data) {
if (cmd->sense_reason) {
if (iscsit_dump_data_payload(conn, payload_length, 1) < 0)
return -1;
} else if (cmd->unsolicited_data) {
@ -1272,8 +1255,7 @@ static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf)
spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
spin_lock_irqsave(&se_cmd->t_state_lock, flags);
if (!(se_cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE) ||
(se_cmd->se_cmd_flags & SCF_SCSI_CDB_EXCEPTION))
if (!(se_cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE))
dump_unsolicited_data = 1;
spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
@ -1742,7 +1724,6 @@ static int iscsit_handle_task_mgt_cmd(
ret = transport_lookup_tmr_lun(&cmd->se_cmd,
scsilun_to_int(&hdr->lun));
if (ret < 0) {
cmd->se_cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
se_tmr->response = ISCSI_TMF_RSP_NO_LUN;
goto attach;
}
@ -1751,10 +1732,8 @@ static int iscsit_handle_task_mgt_cmd(
switch (function) {
case ISCSI_TM_FUNC_ABORT_TASK:
se_tmr->response = iscsit_tmr_abort_task(cmd, buf);
if (se_tmr->response != ISCSI_TMF_RSP_COMPLETE) {
cmd->se_cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
if (se_tmr->response)
goto attach;
}
break;
case ISCSI_TM_FUNC_ABORT_TASK_SET:
case ISCSI_TM_FUNC_CLEAR_ACA:
@ -1763,14 +1742,12 @@ static int iscsit_handle_task_mgt_cmd(
break;
case ISCSI_TM_FUNC_TARGET_WARM_RESET:
if (iscsit_tmr_task_warm_reset(conn, tmr_req, buf) < 0) {
cmd->se_cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
se_tmr->response = ISCSI_TMF_RSP_AUTH_FAILED;
goto attach;
}
break;
case ISCSI_TM_FUNC_TARGET_COLD_RESET:
if (iscsit_tmr_task_cold_reset(conn, tmr_req, buf) < 0) {
cmd->se_cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
se_tmr->response = ISCSI_TMF_RSP_AUTH_FAILED;
goto attach;
}
@ -1781,7 +1758,7 @@ static int iscsit_handle_task_mgt_cmd(
* Perform sanity checks on the ExpDataSN only if the
* TASK_REASSIGN was successful.
*/
if (se_tmr->response != ISCSI_TMF_RSP_COMPLETE)
if (se_tmr->response)
break;
if (iscsit_check_task_reassign_expdatasn(tmr_req, conn) < 0)
@ -1792,7 +1769,6 @@ static int iscsit_handle_task_mgt_cmd(
default:
pr_err("Unknown TMR function: 0x%02x, protocol"
" error.\n", function);
cmd->se_cmd.se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
se_tmr->response = ISCSI_TMF_RSP_NOT_SUPPORTED;
goto attach;
}

2
drivers/target/iscsi/iscsi_target_core.h
View File

@ -474,7 +474,7 @@ struct iscsi_cmd {
struct scatterlist *first_data_sg;
u32 first_data_sg_off;
u32 kmapped_nents;
sense_reason_t sense_reason;
} ____cacheline_aligned;
struct iscsi_tmr_req {

11
drivers/target/iscsi/iscsi_target_erl1.c
View File

@ -929,11 +929,10 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo)
case ISCSI_OP_SCSI_CMD:
/*
* Go ahead and send the CHECK_CONDITION status for
* any SCSI CDB exceptions that may have occurred, also
* handle the SCF_SCSI_RESERVATION_CONFLICT case here as well.
* any SCSI CDB exceptions that may have occurred.
*/
if (se_cmd->se_cmd_flags & SCF_SCSI_CDB_EXCEPTION) {
if (se_cmd->scsi_sense_reason == TCM_RESERVATION_CONFLICT) {
if (cmd->sense_reason) {
if (cmd->sense_reason == TCM_RESERVATION_CONFLICT) {
cmd->i_state = ISTATE_SEND_STATUS;
spin_unlock_bh(&cmd->istate_lock);
iscsit_add_cmd_to_response_queue(cmd, cmd->conn,
@ -956,7 +955,7 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo)
* exception
*/
return transport_send_check_condition_and_sense(se_cmd,
se_cmd->scsi_sense_reason, 0);
cmd->sense_reason, 0);
}
/*
* Special case for delayed CmdSN with Immediate
@ -1013,7 +1012,7 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo)
iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
break;
case ISCSI_OP_SCSI_TMFUNC:
if (se_cmd->se_cmd_flags & SCF_SCSI_CDB_EXCEPTION) {
if (cmd->se_cmd.se_tmr_req->response) {
spin_unlock_bh(&cmd->istate_lock);
iscsit_add_cmd_to_response_queue(cmd, cmd->conn,
cmd->i_state);

98
drivers/target/target_core_alua.c
View File

@ -41,7 +41,7 @@
#include "target_core_alua.h"
#include "target_core_ua.h"
static int core_alua_check_transition(int state, int *primary);
static sense_reason_t core_alua_check_transition(int state, int *primary);
static int core_alua_set_tg_pt_secondary_state(
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem,
struct se_port *port, int explict, int offline);
@ -59,7 +59,8 @@ struct t10_alua_lu_gp *default_lu_gp;
*
* See spc4r17 section 6.27
*/
int target_emulate_report_target_port_groups(struct se_cmd *cmd)
sense_reason_t
target_emulate_report_target_port_groups(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_port *port;
@ -68,6 +69,7 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
unsigned char *buf;
u32 rd_len = 0, off;
int ext_hdr = (cmd->t_task_cdb[1] & 0x20);
/*
* Skip over RESERVED area to first Target port group descriptor
* depending on the PARAMETER DATA FORMAT type..
@ -81,10 +83,11 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
pr_warn("REPORT TARGET PORT GROUPS allocation length %u too"
" small for %s header\n", cmd->data_length,
(ext_hdr) ? "extended" : "normal");
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
return TCM_INVALID_CDB_FIELD;
}
buf = transport_kmap_data_sg(cmd);
if (!buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
list_for_each_entry(tg_pt_gp, &dev->t10_alua.tg_pt_gps_list,
@ -200,7 +203,8 @@ int target_emulate_report_target_port_groups(struct se_cmd *cmd)
*
* See spc4r17 section 6.35
*/
int target_emulate_set_target_port_groups(struct se_cmd *cmd)
sense_reason_t
target_emulate_set_target_port_groups(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_port *port, *l_port = cmd->se_lun->lun_sep;
@ -209,22 +213,23 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, *l_tg_pt_gp_mem;
unsigned char *buf;
unsigned char *ptr;
sense_reason_t rc;
u32 len = 4; /* Skip over RESERVED area in header */
int alua_access_state, primary = 0, rc;
int alua_access_state, primary = 0;
u16 tg_pt_id, rtpi;
if (!l_port) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -EINVAL;
}
if (!l_port)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (cmd->data_length < 4) {
pr_warn("SET TARGET PORT GROUPS parameter list length %u too"
" small\n", cmd->data_length);
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
return -EINVAL;
return TCM_INVALID_PARAMETER_LIST;
}
buf = transport_kmap_data_sg(cmd);
if (!buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
/*
* Determine if explict ALUA via SET_TARGET_PORT_GROUPS is allowed
@ -233,8 +238,7 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
l_tg_pt_gp_mem = l_port->sep_alua_tg_pt_gp_mem;
if (!l_tg_pt_gp_mem) {
pr_err("Unable to access l_port->sep_alua_tg_pt_gp_mem\n");
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
rc = -EINVAL;
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
spin_lock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
@ -242,24 +246,22 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
if (!l_tg_pt_gp) {
spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
pr_err("Unable to access *l_tg_pt_gp_mem->tg_pt_gp\n");
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
rc = -EINVAL;
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
rc = (l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICT_ALUA);
spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock);
if (!rc) {
if (l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICT_ALUA) {
pr_debug("Unable to process SET_TARGET_PORT_GROUPS"
" while TPGS_EXPLICT_ALUA is disabled\n");
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
rc = -EINVAL;
rc = TCM_UNSUPPORTED_SCSI_OPCODE;
goto out;
}
ptr = &buf[4]; /* Skip over RESERVED area in header */
while (len < cmd->data_length) {
bool found = false;
alua_access_state = (ptr[0] & 0x0f);
/*
* Check the received ALUA access state, and determine if
@ -267,7 +269,7 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
* access state.
*/
rc = core_alua_check_transition(alua_access_state, &primary);
if (rc != 0) {
if (rc) {
/*
* If the SET TARGET PORT GROUPS attempts to establish
* an invalid combination of target port asymmetric
@ -278,11 +280,9 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
* REQUEST, and the additional sense code set to INVALID
* FIELD IN PARAMETER LIST.
*/
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
rc = -EINVAL;
goto out;
}
rc = -1;
/*
* If the ASYMMETRIC ACCESS STATE field (see table 267)
* specifies a primary target port asymmetric access state,
@ -314,11 +314,13 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
atomic_inc(&tg_pt_gp->tg_pt_gp_ref_cnt);
smp_mb__after_atomic_inc();
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
rc = core_alua_do_port_transition(tg_pt_gp,
if (!core_alua_do_port_transition(tg_pt_gp,
dev, l_port, nacl,
alua_access_state, 1);
alua_access_state, 1))
found = true;
spin_lock(&dev->t10_alua.tg_pt_gps_lock);
atomic_dec(&tg_pt_gp->tg_pt_gp_ref_cnt);
@ -326,15 +328,6 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
break;
}
spin_unlock(&dev->t10_alua.tg_pt_gps_lock);
/*
* If not matching target port group ID can be located
* throw an exception with ASCQ: INVALID_PARAMETER_LIST
*/
if (rc != 0) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
rc = -EINVAL;
goto out;
}
} else {
/*
* Extact the RELATIVE TARGET PORT IDENTIFIER to identify
@ -353,25 +346,22 @@ int target_emulate_set_target_port_groups(struct se_cmd *cmd)
continue;
tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
spin_unlock(&dev->se_port_lock);
rc = core_alua_set_tg_pt_secondary_state(
tg_pt_gp_mem, port, 1, 1);
if (!core_alua_set_tg_pt_secondary_state(
tg_pt_gp_mem, port, 1, 1))
found = true;
spin_lock(&dev->se_port_lock);
break;
}
spin_unlock(&dev->se_port_lock);
/*
* If not matching relative target port identifier can
* be located, throw an exception with ASCQ:
* INVALID_PARAMETER_LIST
*/
if (rc != 0) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
rc = -EINVAL;
goto out;
}
}
if (!found) {
rc = TCM_INVALID_PARAMETER_LIST;
goto out;
}
ptr += 4;
@ -526,7 +516,8 @@ static inline int core_alua_state_transition(
* return 0: Used to signal success
* reutrn -1: Used to signal failure, and invalid cdb field
*/
int target_alua_state_check(struct se_cmd *cmd)
sense_reason_t
target_alua_state_check(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
@ -599,8 +590,7 @@ int target_alua_state_check(struct se_cmd *cmd)
default:
pr_err("Unknown ALUA access state: 0x%02x\n",
out_alua_state);
ret = -EINVAL;
break;
return TCM_INVALID_CDB_FIELD;
}
out:
@ -617,15 +607,17 @@ out:
cmd->scsi_asc = 0x04;
cmd->scsi_ascq = alua_ascq;
return TCM_CHECK_CONDITION_NOT_READY;
}
return ret;
return 0;
}
/*
* Check implict and explict ALUA state change request.
*/
static int core_alua_check_transition(int state, int *primary)
static sense_reason_t
core_alua_check_transition(int state, int *primary)
{
switch (state) {
case ALUA_ACCESS_STATE_ACTIVE_OPTMIZED:
@ -647,7 +639,7 @@ static int core_alua_check_transition(int state, int *primary)
break;
default:
pr_err("Unknown ALUA access state: 0x%02x\n", state);
return -EINVAL;
return TCM_INVALID_PARAMETER_LIST;
}
return 0;

6
drivers/target/target_core_alua.h
View File

@ -72,8 +72,8 @@ extern struct kmem_cache *t10_alua_lu_gp_mem_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_cache;
extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
extern int target_emulate_report_target_port_groups(struct se_cmd *);
extern int target_emulate_set_target_port_groups(struct se_cmd *);
extern sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *);
extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *);
extern int core_alua_check_nonop_delay(struct se_cmd *);
extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *,
struct se_device *, struct se_port *,
@ -132,6 +132,6 @@ extern ssize_t core_alua_show_secondary_write_metadata(struct se_lun *,
extern ssize_t core_alua_store_secondary_write_metadata(struct se_lun *,
const char *, size_t);
extern int core_setup_alua(struct se_device *);
extern int target_alua_state_check(struct se_cmd *cmd);
extern sense_reason_t target_alua_state_check(struct se_cmd *cmd);
#endif /* TARGET_CORE_ALUA_H */

31
drivers/target/target_core_device.c
View File

@ -54,18 +54,16 @@ static struct se_hba *lun0_hba;
/* not static, needed by tpg.c */
struct se_device *g_lun0_dev;
int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
sense_reason_t
transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
{
struct se_lun *se_lun = NULL;
struct se_session *se_sess = se_cmd->se_sess;
struct se_device *dev;
unsigned long flags;
if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -ENODEV;
}
if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG)
return TCM_NON_EXISTENT_LUN;
spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun];
@ -77,14 +75,12 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
(deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) {
se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
" Access for 0x%08x\n",
se_cmd->se_tfo->get_fabric_name(),
unpacked_lun);
spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
return -EACCES;
return TCM_WRITE_PROTECTED;
}
if (se_cmd->data_direction == DMA_TO_DEVICE)
@ -109,23 +105,18 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
* MappedLUN=0 exists for this Initiator Port.
*/
if (unpacked_lun != 0) {
se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
" Access for 0x%08x\n",
se_cmd->se_tfo->get_fabric_name(),
unpacked_lun);
return -ENODEV;
return TCM_NON_EXISTENT_LUN;
}
/*
* Force WRITE PROTECT for virtual LUN 0
*/
if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
(se_cmd->data_direction != DMA_NONE)) {
se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -EACCES;
}
(se_cmd->data_direction != DMA_NONE))
return TCM_WRITE_PROTECTED;
se_lun = &se_sess->se_tpg->tpg_virt_lun0;
se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
@ -162,11 +153,8 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
unsigned long flags;
if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG)
return -ENODEV;
}
spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun];
@ -186,7 +174,6 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
" Access for 0x%08x\n",
se_cmd->se_tfo->get_fabric_name(),
unpacked_lun);
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
return -ENODEV;
}

22
drivers/target/target_core_file.c
View File

@ -309,7 +309,8 @@ static int fd_do_writev(struct se_cmd *cmd, struct scatterlist *sgl,
return 1;
}
static int fd_execute_sync_cache(struct se_cmd *cmd)
static sense_reason_t
fd_execute_sync_cache(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct fd_dev *fd_dev = FD_DEV(dev);
@ -345,17 +346,16 @@ static int fd_execute_sync_cache(struct se_cmd *cmd)
if (immed)
return 0;
if (ret) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (ret)
target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION);
} else {
else
target_complete_cmd(cmd, SAM_STAT_GOOD);
}
return 0;
}
static int fd_execute_rw(struct se_cmd *cmd)
static sense_reason_t
fd_execute_rw(struct se_cmd *cmd)
{
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
@ -388,10 +388,9 @@ static int fd_execute_rw(struct se_cmd *cmd)
}
}
if (ret < 0) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return ret;
}
if (ret < 0)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (ret)
target_complete_cmd(cmd, SAM_STAT_GOOD);
return 0;
@ -515,7 +514,8 @@ static struct sbc_ops fd_sbc_ops = {
.execute_sync_cache = fd_execute_sync_cache,
};
static int fd_parse_cdb(struct se_cmd *cmd)
static sense_reason_t
fd_parse_cdb(struct se_cmd *cmd)
{
return sbc_parse_cdb(cmd, &fd_sbc_ops);
}

55
drivers/target/target_core_iblock.c
View File

@ -261,13 +261,10 @@ static void iblock_end_io_flush(struct bio *bio, int err)
pr_err("IBLOCK: cache flush failed: %d\n", err);
if (cmd) {
if (err) {
cmd->scsi_sense_reason =
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (err)
target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION);
} else {
else
target_complete_cmd(cmd, SAM_STAT_GOOD);
}
}
bio_put(bio);
@ -277,7 +274,8 @@ static void iblock_end_io_flush(struct bio *bio, int err)
* Implement SYCHRONIZE CACHE. Note that we can't handle lba ranges and must
* always flush the whole cache.
*/
static int iblock_execute_sync_cache(struct se_cmd *cmd)
static sense_reason_t
iblock_execute_sync_cache(struct se_cmd *cmd)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
int immed = (cmd->t_task_cdb[1] & 0x2);
@ -299,7 +297,8 @@ static int iblock_execute_sync_cache(struct se_cmd *cmd)
return 0;
}
static int iblock_execute_unmap(struct se_cmd *cmd)
static sense_reason_t
iblock_execute_unmap(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
@ -307,17 +306,18 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
sector_t lba;
int size;
u32 range;
int ret = 0;
int dl, bd_dl;
sense_reason_t ret = 0;
int dl, bd_dl, err;
if (cmd->data_length < 8) {
pr_warn("UNMAP parameter list length %u too small\n",
cmd->data_length);
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
return -EINVAL;
return TCM_INVALID_PARAMETER_LIST;
}
buf = transport_kmap_data_sg(cmd);
if (!buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
dl = get_unaligned_be16(&buf[0]);
bd_dl = get_unaligned_be16(&buf[2]);
@ -330,8 +330,7 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
size = bd_dl;
if (size / 16 > dev->dev_attrib.max_unmap_block_desc_count) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
ret = -EINVAL;
ret = TCM_INVALID_PARAMETER_LIST;
goto err;
}
@ -347,22 +346,21 @@ static int iblock_execute_unmap(struct se_cmd *cmd)
(unsigned long long)lba, range);
if (range > dev->dev_attrib.max_unmap_lba_count) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
ret = -EINVAL;
ret = TCM_INVALID_PARAMETER_LIST;
goto err;
}
if (lba + range > dev->transport->get_blocks(dev) + 1) {
cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE;
ret = -EINVAL;
ret = TCM_ADDRESS_OUT_OF_RANGE;
goto err;
}
ret = blkdev_issue_discard(ib_dev->ibd_bd, lba, range,
err = blkdev_issue_discard(ib_dev->ibd_bd, lba, range,
GFP_KERNEL, 0);
if (ret < 0) {
if (err < 0) {
pr_err("blkdev_issue_discard() failed: %d\n",
ret);
err);
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
goto err;
}
@ -377,7 +375,8 @@ err:
return ret;
}
static int iblock_execute_write_same(struct se_cmd *cmd)
static sense_reason_t
iblock_execute_write_same(struct se_cmd *cmd)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
int ret;
@ -387,7 +386,7 @@ static int iblock_execute_write_same(struct se_cmd *cmd)
0);
if (ret < 0) {
pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n");
return ret;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
target_complete_cmd(cmd, GOOD);
@ -552,7 +551,8 @@ static void iblock_submit_bios(struct bio_list *list, int rw)
blk_finish_plug(&plug);
}
static int iblock_execute_rw(struct se_cmd *cmd)
static sense_reason_t
iblock_execute_rw(struct se_cmd *cmd)
{
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
@ -598,8 +598,7 @@ static int iblock_execute_rw(struct se_cmd *cmd)
else {
pr_err("Unsupported SCSI -> BLOCK LBA conversion:"
" %u\n", dev->dev_attrib.block_size);
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOSYS;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL);
@ -659,9 +658,8 @@ fail_put_bios:
bio_put(bio);
fail_free_ibr:
kfree(ibr);
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
fail:
return -ENOMEM;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
static sector_t iblock_get_blocks(struct se_device *dev)
@ -706,7 +704,8 @@ static struct sbc_ops iblock_sbc_ops = {
.execute_unmap = iblock_execute_unmap,
};
static int iblock_parse_cdb(struct se_cmd *cmd)
static sense_reason_t
iblock_parse_cdb(struct se_cmd *cmd)
{
return sbc_parse_cdb(cmd, &iblock_sbc_ops);
}

2
drivers/target/target_core_internal.h
View File

@ -101,7 +101,7 @@ int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags);
int transport_clear_lun_from_sessions(struct se_lun *);
void transport_send_task_abort(struct se_cmd *);
int target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
void target_qf_do_work(struct work_struct *work);
/* target_core_stat.c */

944
drivers/target/target_core_pr.c
View File

File diff suppressed because it is too large Load Diff

10
drivers/target/target_core_pr.h
View File

@ -47,8 +47,8 @@ extern struct kmem_cache *t10_pr_reg_cache;
extern int core_pr_dump_initiator_port(struct t10_pr_registration *,
char *, u32);
extern int target_scsi2_reservation_release(struct se_cmd *);
extern int target_scsi2_reservation_reserve(struct se_cmd *);
extern sense_reason_t target_scsi2_reservation_release(struct se_cmd *);
extern sense_reason_t target_scsi2_reservation_reserve(struct se_cmd *);
extern int core_scsi3_alloc_aptpl_registration(
struct t10_reservation *, u64,
unsigned char *, unsigned char *, u32,
@ -61,8 +61,8 @@ extern void core_scsi3_free_pr_reg_from_nacl(struct se_device *,
extern void core_scsi3_free_all_registrations(struct se_device *);
extern unsigned char *core_scsi3_pr_dump_type(int);
extern int target_scsi3_emulate_pr_in(struct se_cmd *);
extern int target_scsi3_emulate_pr_out(struct se_cmd *);
extern int target_check_reservation(struct se_cmd *cmd);
extern sense_reason_t target_scsi3_emulate_pr_in(struct se_cmd *);
extern sense_reason_t target_scsi3_emulate_pr_out(struct se_cmd *);
extern sense_reason_t target_check_reservation(struct se_cmd *);
#endif /* TARGET_CORE_PR_H */

51
drivers/target/target_core_pscsi.c
View File

@ -60,7 +60,7 @@ static inline struct pscsi_dev_virt *PSCSI_DEV(struct se_device *dev)
static struct se_subsystem_api pscsi_template;
static int pscsi_execute_cmd(struct se_cmd *cmd);
static sense_reason_t pscsi_execute_cmd(struct se_cmd *cmd);
static void pscsi_req_done(struct request *, int);
/* pscsi_attach_hba():
@ -642,7 +642,11 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg,
if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) &&
(status_byte(result) << 1) == SAM_STAT_GOOD) {
if (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) {
unsigned char *buf = transport_kmap_data_sg(cmd);
unsigned char *buf;
buf = transport_kmap_data_sg(cmd);
if (!buf)
; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */
if (cdb[0] == MODE_SENSE_10) {
if (!(buf[3] & 0x80))
@ -856,9 +860,9 @@ static inline struct bio *pscsi_get_bio(int sg_num)
return bio;
}
static int pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents, enum dma_data_direction data_direction,
struct bio **hbio)
static sense_reason_t
pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
enum dma_data_direction data_direction, struct bio **hbio)
{
struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev);
struct bio *bio = NULL, *tbio = NULL;
@ -946,7 +950,7 @@ static int pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl,
}
}
return sgl_nents;
return 0;
fail:
while (*hbio) {
bio = *hbio;
@ -954,8 +958,7 @@ fail:
bio->bi_next = NULL;
bio_endio(bio, 0); /* XXX: should be error */
}
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOMEM;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
/*
@ -982,15 +985,13 @@ static inline void pscsi_clear_cdb_lun(unsigned char *cdb)
}
}
static int pscsi_parse_cdb(struct se_cmd *cmd)
static sense_reason_t
pscsi_parse_cdb(struct se_cmd *cmd)
{
unsigned char *cdb = cmd->t_task_cdb;
if (cmd->se_cmd_flags & SCF_BIDI) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
return -EINVAL;
}
if (cmd->se_cmd_flags & SCF_BIDI)
return TCM_UNSUPPORTED_SCSI_OPCODE;
pscsi_clear_cdb_lun(cdb);
@ -1020,7 +1021,8 @@ static int pscsi_parse_cdb(struct se_cmd *cmd)
}
}
static int pscsi_execute_cmd(struct se_cmd *cmd)
static sense_reason_t
pscsi_execute_cmd(struct se_cmd *cmd)
{
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
@ -1029,7 +1031,7 @@ static int pscsi_execute_cmd(struct se_cmd *cmd)
struct pscsi_plugin_task *pt;
struct request *req;
struct bio *hbio;
int ret;
sense_reason_t ret;
/*
* Dynamically alloc cdb space, since it may be larger than
@ -1037,8 +1039,7 @@ static int pscsi_execute_cmd(struct se_cmd *cmd)
*/
pt = kzalloc(sizeof(*pt) + scsi_command_size(cmd->t_task_cdb), GFP_KERNEL);
if (!pt) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOMEM;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
cmd->priv = pt;
@ -1052,24 +1053,21 @@ static int pscsi_execute_cmd(struct se_cmd *cmd)
if (!req || IS_ERR(req)) {
pr_err("PSCSI: blk_get_request() failed: %ld\n",
req ? IS_ERR(req) : -ENOMEM);
cmd->scsi_sense_reason =
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
goto fail;
}
} else {
BUG_ON(!cmd->data_length);
ret = pscsi_map_sg(cmd, sgl, sgl_nents, data_direction, &hbio);
if (ret < 0) {
cmd->scsi_sense_reason =
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (ret)
goto fail;
}
req = blk_make_request(pdv->pdv_sd->request_queue, hbio,
GFP_KERNEL);
if (IS_ERR(req)) {
pr_err("pSCSI: blk_make_request() failed\n");
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
goto fail_free_bio;
}
}
@ -1100,10 +1098,10 @@ fail_free_bio:
bio->bi_next = NULL;
bio_endio(bio, 0); /* XXX: should be error */
}
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
fail:
kfree(pt);
return -ENOMEM;
return ret;
}
/* pscsi_get_device_type():
@ -1152,7 +1150,6 @@ static void pscsi_req_done(struct request *req, int uptodate)
pr_debug("PSCSI Host Byte exception at cmd: %p CDB:"
" 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0],
pt->pscsi_result);
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION);
break;
}

10
drivers/target/target_core_rd.c
View File

@ -275,7 +275,8 @@ static struct rd_dev_sg_table *rd_get_sg_table(struct rd_dev *rd_dev, u32 page)
return NULL;
}
static int rd_execute_rw(struct se_cmd *cmd)
static sense_reason_t
rd_execute_rw(struct se_cmd *cmd)
{
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
@ -298,7 +299,7 @@ static int rd_execute_rw(struct se_cmd *cmd)
table = rd_get_sg_table(dev, rd_page);
if (!table)
return -EINVAL;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
rd_sg = &table->sg_table[rd_page - table->page_start_offset];
@ -348,7 +349,7 @@ static int rd_execute_rw(struct se_cmd *cmd)
table = rd_get_sg_table(dev, rd_page);
if (!table) {
sg_miter_stop(&m);
return -EINVAL;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
/* since we increment, the first sg entry is correct */
@ -431,7 +432,8 @@ static struct sbc_ops rd_sbc_ops = {
.execute_rw = rd_execute_rw,
};
static int rd_parse_cdb(struct se_cmd *cmd)
static sense_reason_t
rd_parse_cdb(struct se_cmd *cmd)
{
return sbc_parse_cdb(cmd, &rd_sbc_ops);
}

87
drivers/target/target_core_sbc.c
View File

@ -37,7 +37,8 @@
#include "target_core_ua.h"
static int sbc_emulate_readcapacity(struct se_cmd *cmd)
static sense_reason_t
sbc_emulate_readcapacity(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
unsigned long long blocks_long = dev->transport->get_blocks(dev);
@ -60,16 +61,18 @@ static int sbc_emulate_readcapacity(struct se_cmd *cmd)
buf[7] = dev->dev_attrib.block_size & 0xff;
rbuf = transport_kmap_data_sg(cmd);
if (rbuf) {
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
}
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
target_complete_cmd(cmd, GOOD);
return 0;
}
static int sbc_emulate_readcapacity_16(struct se_cmd *cmd)
static sense_reason_t
sbc_emulate_readcapacity_16(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
unsigned char *rbuf;
@ -97,10 +100,11 @@ static int sbc_emulate_readcapacity_16(struct se_cmd *cmd)
buf[14] = 0x80;
rbuf = transport_kmap_data_sg(cmd);
if (rbuf) {
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
}
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
target_complete_cmd(cmd, GOOD);
return 0;
@ -129,7 +133,8 @@ int spc_get_write_same_sectors(struct se_cmd *cmd)
}
EXPORT_SYMBOL(spc_get_write_same_sectors);
static int sbc_emulate_verify(struct se_cmd *cmd)
static sense_reason_t
sbc_emulate_verify(struct se_cmd *cmd)
{
target_complete_cmd(cmd, GOOD);
return 0;
@ -313,13 +318,14 @@ out:
kfree(buf);
}
int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
sense_reason_t
sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
{
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
unsigned int size;
u32 sectors = 0;
int ret;
sense_reason_t ret;
switch (cdb[0]) {
case READ_6:
@ -378,9 +384,9 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
cmd->execute_cmd = ops->execute_rw;
break;
case XDWRITEREAD_10:
if ((cmd->data_direction != DMA_TO_DEVICE) ||
if (cmd->data_direction != DMA_TO_DEVICE ||
!(cmd->se_cmd_flags & SCF_BIDI))
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
sectors = transport_get_sectors_10(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
@ -419,26 +425,26 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
break;
case WRITE_SAME_32:
if (!ops->execute_write_same)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
sectors = transport_get_sectors_32(cdb);
if (!sectors) {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not"
" supported\n");
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
size = sbc_get_size(cmd, 1);
cmd->t_task_lba = get_unaligned_be64(&cdb[12]);
if (sbc_write_same_supported(dev, &cdb[10]) < 0)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->execute_cmd = ops->execute_write_same;
break;
default:
pr_err("VARIABLE_LENGTH_CMD service action"
" 0x%04x not supported\n", service_action);
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
break;
}
@ -454,7 +460,7 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
default:
pr_err("Unsupported SA: 0x%02x\n",
cmd->t_task_cdb[1] & 0x1f);
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
size = (cdb[10] << 24) | (cdb[11] << 16) |
(cdb[12] << 8) | cdb[13];
@ -462,7 +468,7 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
case SYNCHRONIZE_CACHE:
case SYNCHRONIZE_CACHE_16:
if (!ops->execute_sync_cache)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
/*
* Extract LBA and range to be flushed for emulated SYNCHRONIZE_CACHE
@ -483,42 +489,42 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
*/
if (cmd->t_task_lba || sectors) {
if (sbc_check_valid_sectors(cmd) < 0)
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
cmd->execute_cmd = ops->execute_sync_cache;
break;
case UNMAP:
if (!ops->execute_unmap)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
size = get_unaligned_be16(&cdb[7]);
cmd->execute_cmd = ops->execute_unmap;
break;
case WRITE_SAME_16:
if (!ops->execute_write_same)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
sectors = transport_get_sectors_16(cdb);
if (!sectors) {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not supported\n");
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
size = sbc_get_size(cmd, 1);
cmd->t_task_lba = get_unaligned_be64(&cdb[2]);
if (sbc_write_same_supported(dev, &cdb[1]) < 0)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->execute_cmd = ops->execute_write_same;
break;
case WRITE_SAME:
if (!ops->execute_write_same)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
sectors = transport_get_sectors_10(cdb);
if (!sectors) {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not supported\n");
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
size = sbc_get_size(cmd, 1);
@ -529,7 +535,7 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
* of byte 1 bit 3 UNMAP instead of original reserved field
*/
if (sbc_write_same_supported(dev, &cdb[1]) < 0)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->execute_cmd = ops->execute_write_same;
break;
case VERIFY:
@ -556,7 +562,7 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
/* reject any command that we don't have a handler for */
if (!(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) && !cmd->execute_cmd)
goto out_unsupported_cdb;
return TCM_UNSUPPORTED_SCSI_OPCODE;
if (cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) {
unsigned long long end_lba;
@ -566,14 +572,14 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
" big sectors %u exceeds fabric_max_sectors:"
" %u\n", cdb[0], sectors,
dev->dev_attrib.fabric_max_sectors);
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
if (sectors > dev->dev_attrib.hw_max_sectors) {
printk_ratelimited(KERN_ERR "SCSI OP %02xh with too"
" big sectors %u exceeds backend hw_max_sectors:"
" %u\n", cdb[0], sectors,
dev->dev_attrib.hw_max_sectors);
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
end_lba = dev->transport->get_blocks(dev) + 1;
@ -581,26 +587,13 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
pr_err("cmd exceeds last lba %llu "
"(lba %llu, sectors %u)\n",
end_lba, cmd->t_task_lba, sectors);
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
size = sbc_get_size(cmd, sectors);
}
ret = target_cmd_size_check(cmd, size);
if (ret < 0)
return ret;
return 0;
out_unsupported_cdb:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
return -EINVAL;
out_invalid_cdb_field:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
return target_cmd_size_check(cmd, size);
}
EXPORT_SYMBOL(sbc_parse_cdb);

126
drivers/target/target_core_spc.c
View File

@ -69,7 +69,8 @@ static void spc_fill_alua_data(struct se_port *port, unsigned char *buf)
spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
}
static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf)
static sense_reason_t
spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf)
{
struct se_lun *lun = cmd->se_lun;
struct se_device *dev = cmd->se_dev;
@ -108,7 +109,8 @@ static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf)
}
/* unit serial number */
static int spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
u16 len = 0;
@ -161,7 +163,8 @@ static void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
* Device identification VPD, for a complete list of
* DESIGNATOR TYPEs see spc4r17 Table 459.
*/
static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
struct se_lun *lun = cmd->se_lun;
@ -406,7 +409,8 @@ check_scsi_name:
}
/* Extended INQUIRY Data VPD Page */
static int spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
{
buf[3] = 0x3c;
/* Set HEADSUP, ORDSUP, SIMPSUP */
@ -419,7 +423,8 @@ static int spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
}
/* Block Limits VPD page */
static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
u32 max_sectors;
@ -490,7 +495,8 @@ static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
}
/* Block Device Characteristics VPD page */
static int spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
@ -502,7 +508,8 @@ static int spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf)
}
/* Thin Provisioning VPD */
static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
@ -552,11 +559,12 @@ static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
return 0;
}
static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf);
static sense_reason_t
spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf);
static struct {
uint8_t page;
int (*emulate)(struct se_cmd *, unsigned char *);
sense_reason_t (*emulate)(struct se_cmd *, unsigned char *);
} evpd_handlers[] = {
{ .page = 0x00, .emulate = spc_emulate_evpd_00 },
{ .page = 0x80, .emulate = spc_emulate_evpd_80 },
@ -568,7 +576,8 @@ static struct {
};
/* supported vital product data pages */
static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
static sense_reason_t
spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
{
int p;
@ -586,14 +595,16 @@ static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
return 0;
}
static int spc_emulate_inquiry(struct se_cmd *cmd)
static sense_reason_t
spc_emulate_inquiry(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg;
unsigned char *rbuf;
unsigned char *cdb = cmd->t_task_cdb;
unsigned char buf[SE_INQUIRY_BUF];
int p, ret;
sense_reason_t ret;
int p;
memset(buf, 0, SE_INQUIRY_BUF);
@ -606,8 +617,7 @@ static int spc_emulate_inquiry(struct se_cmd *cmd)
if (cdb[2]) {
pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n",
cdb[2]);
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
ret = -EINVAL;
ret = TCM_INVALID_CDB_FIELD;
goto out;
}
@ -624,15 +634,15 @@ static int spc_emulate_inquiry(struct se_cmd *cmd)
}
pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]);
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
ret = -EINVAL;
ret = TCM_INVALID_CDB_FIELD;
out:
rbuf = transport_kmap_data_sg(cmd);
if (rbuf) {
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
}
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
if (!ret)
target_complete_cmd(cmd, GOOD);
@ -834,7 +844,7 @@ static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 bloc
return 17;
}
static int spc_emulate_modesense(struct se_cmd *cmd)
static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
char *cdb = cmd->t_task_cdb;
@ -851,7 +861,8 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
int i;
map_buf = transport_kmap_data_sg(cmd);
if (!map_buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
/*
* If SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC is not set, then we
* know we actually allocated a full page. Otherwise, if the
@ -864,8 +875,7 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
buf = kzalloc(SE_MODE_PAGE_BUF, GFP_KERNEL);
if (!buf) {
transport_kunmap_data_sg(cmd);
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOMEM;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
} else {
buf = map_buf;
@ -920,9 +930,10 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
if (page == 0x3f) {
if (subpage != 0x00 && subpage != 0xff) {
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
length = -EINVAL;
goto out;
pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage);
kfree(buf);
transport_kunmap_data_sg(cmd);
return TCM_INVALID_CDB_FIELD;
}
for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) {
@ -958,8 +969,8 @@ static int spc_emulate_modesense(struct se_cmd *cmd)
pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n",
page, subpage);
cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE;
return -EINVAL;
transport_kunmap_data_sg(cmd);
return TCM_UNKNOWN_MODE_PAGE;
set_length:
if (ten)
@ -967,7 +978,6 @@ set_length:
else
buf[0] = length - 1;
out:
if (buf != map_buf) {
memcpy(map_buf, buf, cmd->data_length);
kfree(buf);
@ -978,7 +988,7 @@ out:
return 0;
}
static int spc_emulate_modeselect(struct se_cmd *cmd)
static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
char *cdb = cmd->t_task_cdb;
@ -993,10 +1003,11 @@ static int spc_emulate_modeselect(struct se_cmd *cmd)
int i;
buf = transport_kmap_data_sg(cmd);
if (!buf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (!pf) {
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
ret = -EINVAL;
ret = TCM_INVALID_CDB_FIELD;
goto out;
}
@ -1011,15 +1022,12 @@ static int spc_emulate_modeselect(struct se_cmd *cmd)
goto check_contents;
}
cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE;
ret = -EINVAL;
ret = TCM_UNKNOWN_MODE_PAGE;
goto out;
check_contents:
if (memcmp(buf + off, tbuf, length)) {
cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
ret = -EINVAL;
}
if (memcmp(buf + off, tbuf, length))
ret = TCM_INVALID_PARAMETER_LIST;
out:
transport_kunmap_data_sg(cmd);
@ -1029,7 +1037,7 @@ out:
return ret;
}
static int spc_emulate_request_sense(struct se_cmd *cmd)
static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd)
{
unsigned char *cdb = cmd->t_task_cdb;
unsigned char *rbuf;
@ -1041,19 +1049,14 @@ static int spc_emulate_request_sense(struct se_cmd *cmd)
if (cdb[1] & 0x01) {
pr_err("REQUEST_SENSE description emulation not"
" supported\n");
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -ENOSYS;
return TCM_INVALID_CDB_FIELD;
}
rbuf = transport_kmap_data_sg(cmd);
if (cmd->scsi_sense_reason != 0) {
/*
* Out of memory. We will fail with CHECK CONDITION, so
* we must not clear the unit attention condition.
*/
target_complete_cmd(cmd, CHECK_CONDITION);
return 0;
} else if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) {
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) {
/*
* CURRENT ERROR, UNIT ATTENTION
*/
@ -1080,16 +1083,14 @@ static int spc_emulate_request_sense(struct se_cmd *cmd)
buf[7] = 0x0A;
}
if (rbuf) {
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
}
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);
target_complete_cmd(cmd, GOOD);
return 0;
}
int spc_emulate_report_luns(struct se_cmd *cmd)
sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd)
{
struct se_dev_entry *deve;
struct se_session *sess = cmd->se_sess;
@ -1099,13 +1100,12 @@ int spc_emulate_report_luns(struct se_cmd *cmd)
if (cmd->data_length < 16) {
pr_warn("REPORT LUNS allocation length %u too small\n",
cmd->data_length);
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
return TCM_INVALID_CDB_FIELD;
}
buf = transport_kmap_data_sg(cmd);
if (!buf)
return -ENOMEM;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
/*
* If no struct se_session pointer is present, this struct se_cmd is
@ -1153,13 +1153,15 @@ done:
}
EXPORT_SYMBOL(spc_emulate_report_luns);
static int spc_emulate_testunitready(struct se_cmd *cmd)
static sense_reason_t
spc_emulate_testunitready(struct se_cmd *cmd)
{
target_complete_cmd(cmd, GOOD);
return 0;
}
int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
sense_reason_t
spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
{
struct se_device *dev = cmd->se_dev;
unsigned char *cdb = cmd->t_task_cdb;
@ -1300,9 +1302,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode"
" 0x%02x, sending CHECK_CONDITION.\n",
cmd->se_tfo->get_fabric_name(), cdb[0]);
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
return -EINVAL;
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
return 0;

256
drivers/target/target_core_transport.c
View File

@ -557,7 +557,8 @@ static void target_complete_failure_work(struct work_struct *work)
{
struct se_cmd *cmd = container_of(work, struct se_cmd, work);
transport_generic_request_failure(cmd);
transport_generic_request_failure(cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE);
}
/*
@ -625,7 +626,6 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
complete(&cmd->t_transport_stop_comp);
return;
} else if (cmd->transport_state & CMD_T_FAILED) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
INIT_WORK(&cmd->work, target_complete_failure_work);
} else {
INIT_WORK(&cmd->work, target_complete_ok_work);
@ -976,7 +976,8 @@ transport_set_vpd_ident(struct t10_vpd *vpd, unsigned char *page_83)
}
EXPORT_SYMBOL(transport_set_vpd_ident);
int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
sense_reason_t
target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
{
struct se_device *dev = cmd->se_dev;
@ -991,7 +992,7 @@ int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
if (cmd->data_direction == DMA_TO_DEVICE) {
pr_err("Rejecting underflow/overflow"
" WRITE data\n");
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
/*
* Reject READ_* or WRITE_* with overflow/underflow for
@ -1002,7 +1003,7 @@ int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
" CDB on non 512-byte sector setup subsystem"
" plugin: %s\n", dev->transport->name);
/* Returns CHECK_CONDITION + INVALID_CDB_FIELD */
goto out_invalid_cdb_field;
return TCM_INVALID_CDB_FIELD;
}
/*
* For the overflow case keep the existing fabric provided
@ -1022,10 +1023,6 @@ int target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
return 0;
out_invalid_cdb_field:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
}
/*
@ -1065,7 +1062,8 @@ void transport_init_se_cmd(
}
EXPORT_SYMBOL(transport_init_se_cmd);
static int transport_check_alloc_task_attr(struct se_cmd *cmd)
static sense_reason_t
transport_check_alloc_task_attr(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
@ -1079,7 +1077,7 @@ static int transport_check_alloc_task_attr(struct se_cmd *cmd)
if (cmd->sam_task_attr == MSG_ACA_TAG) {
pr_debug("SAM Task Attribute ACA"
" emulation is not supported\n");
return -EINVAL;
return TCM_INVALID_CDB_FIELD;
}
/*
* Used to determine when ORDERED commands should go from
@ -1093,17 +1091,12 @@ static int transport_check_alloc_task_attr(struct se_cmd *cmd)
return 0;
}
/* target_setup_cmd_from_cdb():
*
* Called from fabric RX Thread.
*/
int target_setup_cmd_from_cdb(
struct se_cmd *cmd,
unsigned char *cdb)
sense_reason_t
target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
{
struct se_device *dev = cmd->se_dev;
unsigned long flags;
int ret;
sense_reason_t ret;
/*
* Ensure that the received CDB is less than the max (252 + 8) bytes
@ -1113,9 +1106,7 @@ int target_setup_cmd_from_cdb(
pr_err("Received SCSI CDB with command_size: %d that"
" exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n",
scsi_command_size(cdb), SCSI_MAX_VARLEN_CDB_SIZE);
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
return TCM_INVALID_CDB_FIELD;
}
/*
* If the received CDB is larger than TCM_MAX_COMMAND_SIZE,
@ -1130,10 +1121,7 @@ int target_setup_cmd_from_cdb(
" %u > sizeof(cmd->__t_task_cdb): %lu ops\n",
scsi_command_size(cdb),
(unsigned long)sizeof(cmd->__t_task_cdb));
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason =
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -ENOMEM;
return TCM_OUT_OF_RESOURCES;
}
} else
cmd->t_task_cdb = &cmd->__t_task_cdb[0];
@ -1145,50 +1133,30 @@ int target_setup_cmd_from_cdb(
/*
* Check for an existing UNIT ATTENTION condition
*/
if (core_scsi3_ua_check(cmd, cdb) < 0) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_CHECK_CONDITION_UNIT_ATTENTION;
return -EINVAL;
}
ret = target_scsi3_ua_check(cmd);
if (ret)
return ret;
ret = target_alua_state_check(cmd);
if (ret) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
if (ret > 0)
cmd->scsi_sense_reason = TCM_CHECK_CONDITION_NOT_READY;
else
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
}
/*
* Check status for SPC-3 Persistent Reservations
*/
ret = target_check_reservation(cmd);
if (ret) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->se_cmd_flags |= SCF_SCSI_RESERVATION_CONFLICT;
cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
if (ret)
return ret;
ret = target_check_reservation(cmd);
if (ret)
return ret;
}
ret = dev->transport->parse_cdb(cmd);
if (ret < 0)
if (ret)
return ret;
ret = transport_check_alloc_task_attr(cmd);
if (ret)
return ret;
spin_lock_irqsave(&cmd->t_state_lock, flags);
cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE;
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
/*
* Check for SAM Task Attribute Emulation
*/
if (transport_check_alloc_task_attr(cmd) < 0) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
}
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep)
cmd->se_lun->lun_sep->sep_stats.cmd_pdus++;
@ -1204,7 +1172,7 @@ EXPORT_SYMBOL(target_setup_cmd_from_cdb);
int transport_handle_cdb_direct(
struct se_cmd *cmd)
{
int ret;
sense_reason_t ret;
if (!cmd->se_lun) {
dump_stack();
@ -1234,13 +1202,41 @@ int transport_handle_cdb_direct(
* and call transport_generic_request_failure() if necessary..
*/
ret = transport_generic_new_cmd(cmd);
if (ret < 0)
transport_generic_request_failure(cmd);
if (ret)
transport_generic_request_failure(cmd, ret);
return 0;
}
EXPORT_SYMBOL(transport_handle_cdb_direct);
static sense_reason_t
transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_count, struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
{
if (!sgl || !sgl_count)
return 0;
/*
* Reject SCSI data overflow with map_mem_to_cmd() as incoming
* scatterlists already have been set to follow what the fabric
* passes for the original expected data transfer length.
*/
if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
pr_warn("Rejecting SCSI DATA overflow for fabric using"
" SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC\n");
return TCM_INVALID_CDB_FIELD;
}
cmd->t_data_sg = sgl;
cmd->t_data_nents = sgl_count;
if (sgl_bidi && sgl_bidi_count) {
cmd->t_bidi_data_sg = sgl_bidi;
cmd->t_bidi_data_nents = sgl_bidi_count;
}
cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
return 0;
}
/*
* target_submit_cmd_map_sgls - lookup unpacked lun and submit uninitialized
* se_cmd + use pre-allocated SGL memory.
@ -1273,7 +1269,8 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
{
struct se_portal_group *se_tpg;
int rc;
sense_reason_t rc;
int ret;
se_tpg = se_sess->se_tpg;
BUG_ON(!se_tpg);
@ -1294,9 +1291,9 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
* for fabrics using TARGET_SCF_ACK_KREF that expect a second
* kref_put() to happen during fabric packet acknowledgement.
*/
rc = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
if (rc)
return rc;
ret = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
if (ret)
return ret;
/*
* Signal bidirectional data payloads to target-core
*/
@ -1305,16 +1302,16 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
/*
* Locate se_lun pointer and attach it to struct se_cmd
*/
if (transport_lookup_cmd_lun(se_cmd, unpacked_lun) < 0) {
transport_send_check_condition_and_sense(se_cmd,
se_cmd->scsi_sense_reason, 0);
rc = transport_lookup_cmd_lun(se_cmd, unpacked_lun);
if (rc) {
transport_send_check_condition_and_sense(se_cmd, rc, 0);
target_put_sess_cmd(se_sess, se_cmd);
return 0;
}
rc = target_setup_cmd_from_cdb(se_cmd, cdb);
if (rc != 0) {
transport_generic_request_failure(se_cmd);
transport_generic_request_failure(se_cmd, rc);
return 0;
}
/*
@ -1349,7 +1346,7 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
rc = transport_generic_map_mem_to_cmd(se_cmd, sgl, sgl_count,
sgl_bidi, sgl_bidi_count);
if (rc != 0) {
transport_generic_request_failure(se_cmd);
transport_generic_request_failure(se_cmd, rc);
return 0;
}
}
@ -1495,16 +1492,17 @@ bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags)
/*
* Handle SAM-esque emulation for generic transport request failures.
*/
void transport_generic_request_failure(struct se_cmd *cmd)
void transport_generic_request_failure(struct se_cmd *cmd,
sense_reason_t sense_reason)
{
int ret = 0;
pr_debug("-----[ Storage Engine Exception for cmd: %p ITT: 0x%08x"
" CDB: 0x%02x\n", cmd, cmd->se_tfo->get_task_tag(cmd),
cmd->t_task_cdb[0]);
pr_debug("-----[ i_state: %d t_state: %d scsi_sense_reason: %d\n",
pr_debug("-----[ i_state: %d t_state: %d sense_reason: %d\n",
cmd->se_tfo->get_cmd_state(cmd),
cmd->t_state, cmd->scsi_sense_reason);
cmd->t_state, sense_reason);
pr_debug("-----[ CMD_T_ACTIVE: %d CMD_T_STOP: %d CMD_T_SENT: %d\n",
(cmd->transport_state & CMD_T_ACTIVE) != 0,
(cmd->transport_state & CMD_T_STOP) != 0,
@ -1515,7 +1513,7 @@ void transport_generic_request_failure(struct se_cmd *cmd)
*/
transport_complete_task_attr(cmd);
switch (cmd->scsi_sense_reason) {
switch (sense_reason) {
case TCM_NON_EXISTENT_LUN:
case TCM_UNSUPPORTED_SCSI_OPCODE:
case TCM_INVALID_CDB_FIELD:
@ -1528,6 +1526,9 @@ void transport_generic_request_failure(struct se_cmd *cmd)
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
case TCM_CHECK_CONDITION_NOT_READY:
break;
case TCM_OUT_OF_RESOURCES:
sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
break;
case TCM_RESERVATION_CONFLICT:
/*
* No SENSE Data payload for this case, set SCSI Status
@ -1555,13 +1556,12 @@ void transport_generic_request_failure(struct se_cmd *cmd)
goto check_stop;
default:
pr_err("Unknown transport error for CDB 0x%02x: %d\n",
cmd->t_task_cdb[0], cmd->scsi_sense_reason);
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
cmd->t_task_cdb[0], sense_reason);
sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
break;
}
ret = transport_send_check_condition_and_sense(cmd,
cmd->scsi_sense_reason, 0);
ret = transport_send_check_condition_and_sense(cmd, sense_reason, 0);
if (ret == -EAGAIN || ret == -ENOMEM)
goto queue_full;
@ -1579,21 +1579,21 @@ EXPORT_SYMBOL(transport_generic_request_failure);
static void __target_execute_cmd(struct se_cmd *cmd)
{
int error = 0;
sense_reason_t ret;
spin_lock_irq(&cmd->t_state_lock);
cmd->transport_state |= (CMD_T_BUSY|CMD_T_SENT);
spin_unlock_irq(&cmd->t_state_lock);
if (cmd->execute_cmd)
error = cmd->execute_cmd(cmd);
if (cmd->execute_cmd) {
ret = cmd->execute_cmd(cmd);
if (ret) {
spin_lock_irq(&cmd->t_state_lock);
cmd->transport_state &= ~(CMD_T_BUSY|CMD_T_SENT);
spin_unlock_irq(&cmd->t_state_lock);
if (error) {
spin_lock_irq(&cmd->t_state_lock);
cmd->transport_state &= ~(CMD_T_BUSY|CMD_T_SENT);
spin_unlock_irq(&cmd->t_state_lock);
transport_generic_request_failure(cmd);
transport_generic_request_failure(cmd, ret);
}
}
}
@ -1987,53 +1987,6 @@ out_busy:
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
}
/*
* transport_generic_map_mem_to_cmd - Use fabric-alloced pages instead of
* allocating in the core.
* @cmd: Associated se_cmd descriptor
* @mem: SGL style memory for TCM WRITE / READ
* @sg_mem_num: Number of SGL elements
* @mem_bidi_in: SGL style memory for TCM BIDI READ
* @sg_mem_bidi_num: Number of BIDI READ SGL elements
*
* Return: nonzero return cmd was rejected for -ENOMEM or inproper usage
* of parameters.
*/
int transport_generic_map_mem_to_cmd(
struct se_cmd *cmd,
struct scatterlist *sgl,
u32 sgl_count,
struct scatterlist *sgl_bidi,
u32 sgl_bidi_count)
{
if (!sgl || !sgl_count)
return 0;
/*
* Reject SCSI data overflow with map_mem_to_cmd() as incoming
* scatterlists already have been set to follow what the fabric
* passes for the original expected data transfer length.
*/
if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
pr_warn("Rejecting SCSI DATA overflow for fabric using"
" SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC\n");
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
return -EINVAL;
}
cmd->t_data_sg = sgl;
cmd->t_data_nents = sgl_count;
if (sgl_bidi && sgl_bidi_count) {
cmd->t_bidi_data_sg = sgl_bidi;
cmd->t_bidi_data_nents = sgl_bidi_count;
}
cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
return 0;
}
EXPORT_SYMBOL(transport_generic_map_mem_to_cmd);
void *transport_kmap_data_sg(struct se_cmd *cmd)
{
struct scatterlist *sg = cmd->t_data_sg;
@ -2054,10 +2007,8 @@ void *transport_kmap_data_sg(struct se_cmd *cmd)
/* >1 page. use vmap */
pages = kmalloc(sizeof(*pages) * cmd->t_data_nents, GFP_KERNEL);
if (!pages) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (!pages)
return NULL;
}
/* convert sg[] to pages[] */
for_each_sg(cmd->t_data_sg, sg, cmd->t_data_nents, i) {
@ -2066,10 +2017,8 @@ void *transport_kmap_data_sg(struct se_cmd *cmd)
cmd->t_data_vmap = vmap(pages, cmd->t_data_nents, VM_MAP, PAGE_KERNEL);
kfree(pages);
if (!cmd->t_data_vmap) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (!cmd->t_data_vmap)
return NULL;
}
return cmd->t_data_vmap + cmd->t_data_sg[0].offset;
}
@ -2135,7 +2084,8 @@ out:
* might not have the payload yet, so notify the fabric via a call to
* ->write_pending instead. Otherwise place it on the execution queue.
*/
int transport_generic_new_cmd(struct se_cmd *cmd)
sense_reason_t
transport_generic_new_cmd(struct se_cmd *cmd)
{
int ret = 0;
@ -2148,7 +2098,7 @@ int transport_generic_new_cmd(struct se_cmd *cmd)
cmd->data_length) {
ret = transport_generic_get_mem(cmd);
if (ret < 0)
goto out_fail;
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
atomic_inc(&cmd->t_fe_count);
@ -2174,14 +2124,11 @@ int transport_generic_new_cmd(struct se_cmd *cmd)
if (ret == -EAGAIN || ret == -ENOMEM)
goto queue_full;
if (ret < 0)
return ret;
return 1;
/* fabric drivers should only return -EAGAIN or -ENOMEM as error */
WARN_ON(ret);
return 0;
out_fail:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return -EINVAL;
queue_full:
pr_debug("Handling write_pending QUEUE__FULL: se_cmd: %p\n", cmd);
cmd->t_state = TRANSPORT_COMPLETE_QF_WP;
@ -2625,10 +2572,9 @@ static int transport_get_sense_codes(
return 0;
}
int transport_send_check_condition_and_sense(
struct se_cmd *cmd,
u8 reason,
int from_transport)
int
transport_send_check_condition_and_sense(struct se_cmd *cmd,
sense_reason_t reason, int from_transport)
{
unsigned char *buffer = cmd->sense_buffer;
unsigned long flags;

11
drivers/target/target_core_ua.c
View File

@ -38,9 +38,8 @@
#include "target_core_pr.h"
#include "target_core_ua.h"
int core_scsi3_ua_check(
struct se_cmd *cmd,
unsigned char *cdb)
sense_reason_t
target_scsi3_ua_check(struct se_cmd *cmd)
{
struct se_dev_entry *deve;
struct se_session *sess = cmd->se_sess;
@ -71,16 +70,14 @@ int core_scsi3_ua_check(
* was received, then the device server shall process the command
* and either:
*/
switch (cdb[0]) {
switch (cmd->t_task_cdb[0]) {
case INQUIRY:
case REPORT_LUNS:
case REQUEST_SENSE:
return 0;
default:
return -EINVAL;
return TCM_CHECK_CONDITION_UNIT_ATTENTION;
}
return -EINVAL;
}
int core_scsi3_ua_allocate(

2
drivers/target/target_core_ua.h
View File

@ -26,7 +26,7 @@
extern struct kmem_cache *se_ua_cache;
extern int core_scsi3_ua_check(struct se_cmd *, unsigned char *);
extern sense_reason_t target_scsi3_ua_check(struct se_cmd *);
extern int core_scsi3_ua_allocate(struct se_node_acl *, u32, u8, u8);
extern void core_scsi3_ua_release_all(struct se_dev_entry *);
extern void core_scsi3_ua_for_check_condition(struct se_cmd *, u8 *, u8 *);

4
drivers/vhost/tcm_vhost.c
View File

@ -541,10 +541,6 @@ static void tcm_vhost_submission_work(struct work_struct *work)
if (tv_cmd->tvc_sgl_count) {
sg_ptr = tv_cmd->tvc_sgl;
/*
* For BIDI commands, pass in the extra READ buffer
* to transport_generic_map_mem_to_cmd() below..
*/
/* FIXME: Fix BIDI operation in tcm_vhost_submission_work() */
#if 0
if (se_cmd->se_cmd_flags & SCF_BIDI) {

16
include/target/target_core_backend.h
View File

@ -31,17 +31,17 @@ struct se_subsystem_api {
struct scatterlist *,
unsigned char *);
int (*parse_cdb)(struct se_cmd *cmd);
sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
u32 (*get_device_type)(struct se_device *);
sector_t (*get_blocks)(struct se_device *);
unsigned char *(*get_sense_buffer)(struct se_cmd *);
};
struct sbc_ops {
int (*execute_rw)(struct se_cmd *cmd);
int (*execute_sync_cache)(struct se_cmd *cmd);
int (*execute_write_same)(struct se_cmd *cmd);
int (*execute_unmap)(struct se_cmd *cmd);
sense_reason_t (*execute_rw)(struct se_cmd *cmd);
sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
};
int transport_subsystem_register(struct se_subsystem_api *);
@ -49,11 +49,11 @@ void transport_subsystem_release(struct se_subsystem_api *);
void target_complete_cmd(struct se_cmd *, u8);
int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
int spc_emulate_report_luns(struct se_cmd *cmd);
sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
int spc_get_write_same_sectors(struct se_cmd *cmd);
int sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
u32 sbc_get_device_rev(struct se_device *dev);
u32 sbc_get_device_type(struct se_device *dev);

46
include/target/target_core_base.h
View File

@ -144,8 +144,6 @@ enum se_cmd_flags_table {
SCF_EMULATED_TASK_SENSE = 0x00000004,
SCF_SCSI_DATA_CDB = 0x00000008,
SCF_SCSI_TMR_CDB = 0x00000010,
SCF_SCSI_CDB_EXCEPTION = 0x00000020,
SCF_SCSI_RESERVATION_CONFLICT = 0x00000040,
SCF_FUA = 0x00000080,
SCF_SE_LUN_CMD = 0x00000100,
SCF_BIDI = 0x00000400,
@ -167,27 +165,32 @@ enum transport_lunflags_table {
};
/*
* Used by transport_send_check_condition_and_sense() and se_cmd->scsi_sense_reason
* Used by transport_send_check_condition_and_sense()
* to signal which ASC/ASCQ sense payload should be built.
*/
typedef unsigned __bitwise__ sense_reason_t;
enum tcm_sense_reason_table {
TCM_NON_EXISTENT_LUN = 0x01,
TCM_UNSUPPORTED_SCSI_OPCODE = 0x02,
TCM_INCORRECT_AMOUNT_OF_DATA = 0x03,
TCM_UNEXPECTED_UNSOLICITED_DATA = 0x04,
TCM_SERVICE_CRC_ERROR = 0x05,
TCM_SNACK_REJECTED = 0x06,
TCM_SECTOR_COUNT_TOO_MANY = 0x07,
TCM_INVALID_CDB_FIELD = 0x08,
TCM_INVALID_PARAMETER_LIST = 0x09,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = 0x0a,
TCM_UNKNOWN_MODE_PAGE = 0x0b,
TCM_WRITE_PROTECTED = 0x0c,
TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
TCM_CHECK_CONDITION_NOT_READY = 0x0f,
TCM_RESERVATION_CONFLICT = 0x10,
TCM_ADDRESS_OUT_OF_RANGE = 0x11,
#define R(x) (__force sense_reason_t )(x)
TCM_NON_EXISTENT_LUN = R(0x01),
TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
TCM_SERVICE_CRC_ERROR = R(0x05),
TCM_SNACK_REJECTED = R(0x06),
TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
TCM_INVALID_CDB_FIELD = R(0x08),
TCM_INVALID_PARAMETER_LIST = R(0x09),
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
TCM_UNKNOWN_MODE_PAGE = R(0x0b),
TCM_WRITE_PROTECTED = R(0x0c),
TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
TCM_RESERVATION_CONFLICT = R(0x10),
TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
TCM_OUT_OF_RESOURCES = R(0x12),
#undef R
};
enum target_sc_flags_table {
@ -407,7 +410,6 @@ struct se_cmd {
u8 scsi_status;
u8 scsi_asc;
u8 scsi_ascq;
u8 scsi_sense_reason;
u16 scsi_sense_length;
/* Delay for ALUA Active/NonOptimized state access in milliseconds */
int alua_nonop_delay;
@ -445,7 +447,7 @@ struct se_cmd {
struct completion cmd_wait_comp;
struct kref cmd_kref;
struct target_core_fabric_ops *se_tfo;
int (*execute_cmd)(struct se_cmd *);
sense_reason_t (*execute_cmd)(struct se_cmd *);
void (*transport_complete_callback)(struct se_cmd *);
unsigned char *t_task_cdb;

13
include/target/target_core_fabric.h
View File

@ -98,8 +98,8 @@ void transport_deregister_session(struct se_session *);
void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
struct se_session *, u32, int, int, unsigned char *);
int transport_lookup_cmd_lun(struct se_cmd *, u32);
int target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *,
unsigned char *, unsigned char *, u32, u32, int, int, int,
struct scatterlist *, u32, struct scatterlist *, u32);
@ -110,9 +110,7 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
void *fabric_tmr_ptr, unsigned char tm_type,
gfp_t, unsigned int, int);
int transport_handle_cdb_direct(struct se_cmd *);
int transport_generic_map_mem_to_cmd(struct se_cmd *cmd,
struct scatterlist *, u32, struct scatterlist *, u32);
int transport_generic_new_cmd(struct se_cmd *);
sense_reason_t transport_generic_new_cmd(struct se_cmd *);
void target_execute_cmd(struct se_cmd *cmd);
@ -120,7 +118,8 @@ void transport_generic_free_cmd(struct se_cmd *, int);
bool transport_wait_for_tasks(struct se_cmd *);
int transport_check_aborted_status(struct se_cmd *, int);
int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
int transport_send_check_condition_and_sense(struct se_cmd *,
sense_reason_t, int);
int target_put_sess_cmd(struct se_session *, struct se_cmd *);
void target_sess_cmd_list_set_waiting(struct se_session *);
@ -131,7 +130,7 @@ int core_alua_check_nonop_delay(struct se_cmd *);
int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
void core_tmr_release_req(struct se_tmr_req *);
int transport_generic_handle_tmr(struct se_cmd *);
void transport_generic_request_failure(struct se_cmd *);
void transport_generic_request_failure(struct se_cmd *, sense_reason_t);
int transport_lookup_tmr_lun(struct se_cmd *, u32);
struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,