From: Sudhakar Panneerselvam <sudhakar.panneerselvam@oracle.com>
Date: Sun, 7 Jun 2020 19:58:31 +0000
Subject: scsi: target: Initialize LUN in transport_init_se_cmd()
Git-commit: a36840d8002736060f96386cf5dd148f0b0d4fa3
Patch-mainline: v5.8-rc1
References: bsc#1177393
Initialization of orig_fe_lun is moved to transport_init_se_cmd() from
transport_lookup_cmd_lun(). This helps for the cases where the SCSI request
fails before the call to transport_lookup_cmd_lun() so that
trace_target_cmd_complete() can print the LUN information to the trace
buffer. Due to this change, the lun parameter is removed from
transport_lookup_cmd_lun() and transport_lookup_tmr_lun().
Link: https://lore.kernel.org/r/1591559913-8388-3-git-send-email-sudhakar.panneerselvam@oracle.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Sudhakar Panneerselvam <sudhakar.panneerselvam@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/target/iscsi/iscsi_target.c | 11 +++++------
drivers/target/target_core_device.c | 19 ++++++++-----------
drivers/target/target_core_tmr.c | 4 ++--
drivers/target/target_core_transport.c | 12 +++++++-----
drivers/target/target_core_xcopy.c | 4 ++--
drivers/usb/gadget/function/f_tcm.c | 6 ++++--
include/target/target_core_fabric.h | 6 +++---
7 files changed, 31 insertions(+), 31 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 59379d662626..1b453629b516 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1158,7 +1158,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
transport_init_se_cmd(&cmd->se_cmd, &iscsi_ops,
conn->sess->se_sess, be32_to_cpu(hdr->data_length),
cmd->data_direction, sam_task_attr,
- cmd->sense_buffer + 2);
+ cmd->sense_buffer + 2, scsilun_to_int(&hdr->lun));
pr_debug("Got SCSI Command, ITT: 0x%08x, CmdSN: 0x%08x,"
" ExpXferLen: %u, Length: %u, CID: %hu\n", hdr->itt,
@@ -1167,8 +1167,7 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
target_get_sess_cmd(&cmd->se_cmd, true);
- cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd,
- scsilun_to_int(&hdr->lun));
+ cmd->sense_reason = transport_lookup_cmd_lun(&cmd->se_cmd);
if (cmd->sense_reason)
goto attach_cmd;
@@ -2000,7 +1999,8 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
transport_init_se_cmd(&cmd->se_cmd, &iscsi_ops,
conn->sess->se_sess, 0, DMA_NONE,
- TCM_SIMPLE_TAG, cmd->sense_buffer + 2);
+ TCM_SIMPLE_TAG, cmd->sense_buffer + 2,
+ scsilun_to_int(&hdr->lun));
target_get_sess_cmd(&cmd->se_cmd, true);
@@ -2038,8 +2038,7 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
* Locate the struct se_lun for all TMRs not related to ERL=2 TASK_REASSIGN
*/
if (function != ISCSI_TM_FUNC_TASK_REASSIGN) {
- ret = transport_lookup_tmr_lun(&cmd->se_cmd,
- scsilun_to_int(&hdr->lun));
+ ret = transport_lookup_tmr_lun(&cmd->se_cmd);
if (ret < 0) {
se_tmr->response = ISCSI_TMF_RSP_NO_LUN;
goto attach;
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 46b0e1ceb77f..405d82d44717 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -45,7 +45,7 @@ static struct se_hba *lun0_hba;
struct se_device *g_lun0_dev;
sense_reason_t
-transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
+transport_lookup_cmd_lun(struct se_cmd *se_cmd)
{
struct se_lun *se_lun = NULL;
struct se_session *se_sess = se_cmd->se_sess;
@@ -54,7 +54,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
sense_reason_t ret = TCM_NO_SENSE;
rcu_read_lock();
- deve = target_nacl_find_deve(nacl, unpacked_lun);
+ deve = target_nacl_find_deve(nacl, se_cmd->orig_fe_lun);
if (deve) {
atomic_long_inc(&deve->total_cmds);
@@ -74,7 +74,6 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
se_cmd->se_lun = se_lun;
se_cmd->pr_res_key = deve->pr_res_key;
- se_cmd->orig_fe_lun = unpacked_lun;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
se_cmd->lun_ref_active = true;
@@ -83,7 +82,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
" Access for 0x%08llx\n",
se_cmd->se_tfo->fabric_name,
- unpacked_lun);
+ se_cmd->orig_fe_lun);
rcu_read_unlock();
ret = TCM_WRITE_PROTECTED;
goto ref_dev;
@@ -98,18 +97,17 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
* REPORT_LUNS, et al to be returned when no active
* MappedLUN=0 exists for this Initiator Port.
*/
- if (unpacked_lun != 0) {
+ if (se_cmd->orig_fe_lun != 0) {
pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
" Access for 0x%08llx from %s\n",
se_cmd->se_tfo->fabric_name,
- unpacked_lun,
+ se_cmd->orig_fe_lun,
nacl->initiatorname);
return TCM_NON_EXISTENT_LUN;
}
se_lun = se_sess->se_tpg->tpg_virt_lun0;
se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0;
- se_cmd->orig_fe_lun = 0;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
percpu_ref_get(&se_lun->lun_ref);
@@ -145,7 +143,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
}
EXPORT_SYMBOL(transport_lookup_cmd_lun);
-int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
+int transport_lookup_tmr_lun(struct se_cmd *se_cmd)
{
struct se_dev_entry *deve;
struct se_lun *se_lun = NULL;
@@ -155,7 +153,7 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
unsigned long flags;
rcu_read_lock();
- deve = target_nacl_find_deve(nacl, unpacked_lun);
+ deve = target_nacl_find_deve(nacl, se_cmd->orig_fe_lun);
if (deve) {
se_lun = rcu_dereference(deve->se_lun);
@@ -166,7 +164,6 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
se_cmd->se_lun = se_lun;
se_cmd->pr_res_key = deve->pr_res_key;
- se_cmd->orig_fe_lun = unpacked_lun;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
se_cmd->lun_ref_active = true;
}
@@ -177,7 +174,7 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
" Access for 0x%08llx for %s\n",
se_cmd->se_tfo->fabric_name,
- unpacked_lun,
+ se_cmd->orig_fe_lun,
nacl->initiatorname);
return -ENODEV;
}
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index afbd492c76a9..89c84d472cd7 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -148,8 +148,8 @@ void core_tmr_abort_task(
* code.
*/
if (!tmr->tmr_dev)
- WARN_ON_ONCE(transport_lookup_tmr_lun(tmr->task_cmd,
- se_cmd->orig_fe_lun) < 0);
+ WARN_ON_ONCE(transport_lookup_tmr_lun(tmr->task_cmd) <
+ 0);
target_put_cmd_and_wait(se_cmd);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index f2f7c5b818cc..7ea77933e64d 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1364,7 +1364,7 @@ void transport_init_se_cmd(
u32 data_length,
int data_direction,
int task_attr,
- unsigned char *sense_buffer)
+ unsigned char *sense_buffer, u64 unpacked_lun)
{
INIT_LIST_HEAD(&cmd->se_delayed_node);
INIT_LIST_HEAD(&cmd->se_qf_node);
@@ -1383,6 +1383,7 @@ void transport_init_se_cmd(
cmd->data_direction = data_direction;
cmd->sam_task_attr = task_attr;
cmd->sense_buffer = sense_buffer;
+ cmd->orig_fe_lun = unpacked_lun;
cmd->state_active = false;
}
@@ -1596,7 +1597,8 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess
* target_core_fabric_ops->queue_status() callback
*/
transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
- data_length, data_dir, task_attr, sense);
+ data_length, data_dir, task_attr, sense,
+ unpacked_lun);
if (flags & TARGET_SCF_USE_CPUID)
se_cmd->se_cmd_flags |= SCF_USE_CPUID;
@@ -1622,7 +1624,7 @@ 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
*/
- rc = transport_lookup_cmd_lun(se_cmd, unpacked_lun);
+ rc = transport_lookup_cmd_lun(se_cmd);
if (rc) {
transport_send_check_condition_and_sense(se_cmd, rc, 0);
target_put_sess_cmd(se_cmd);
@@ -1790,7 +1792,7 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
BUG_ON(!se_tpg);
transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
- 0, DMA_NONE, TCM_SIMPLE_TAG, sense);
+ 0, DMA_NONE, TCM_SIMPLE_TAG, sense, unpacked_lun);
/*
* FIXME: Currently expect caller to handle se_cmd->se_tmr_req
* allocation failure.
@@ -1818,7 +1820,7 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
goto failure;
}
- ret = transport_lookup_tmr_lun(se_cmd, unpacked_lun);
+ ret = transport_lookup_tmr_lun(se_cmd);
if (ret)
goto failure;
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index bd3ed6ce7571..5f1bab37a6bf 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -585,7 +585,7 @@ static int target_xcopy_read_source(
(unsigned long long)src_lba, src_sectors, length);
transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
- DMA_FROM_DEVICE, 0, &xpt_cmd.sense_buffer[0]);
+ DMA_FROM_DEVICE, 0, &xpt_cmd.sense_buffer[0], 0);
rc = target_xcopy_setup_pt_cmd(&xpt_cmd, xop, src_dev, &cdb[0],
remote_port);
@@ -630,7 +630,7 @@ static int target_xcopy_write_destination(
(unsigned long long)dst_lba, dst_sectors, length);
transport_init_se_cmd(se_cmd, &xcopy_pt_tfo, &xcopy_pt_sess, length,
- DMA_TO_DEVICE, 0, &xpt_cmd.sense_buffer[0]);
+ DMA_TO_DEVICE, 0, &xpt_cmd.sense_buffer[0], 0);
rc = target_xcopy_setup_pt_cmd(&xpt_cmd, xop, dst_dev, &cdb[0],
remote_port);
diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 36504931b2d1..ac049909a8bf 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -1049,7 +1049,8 @@ static void usbg_cmd_work(struct work_struct *work)
transport_init_se_cmd(se_cmd,
tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo,
tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE,
- cmd->prio_attr, cmd->sense_iu.sense);
+ cmd->prio_attr, cmd->sense_iu.sense,
+ cmd->unpacked_lun);
goto out;
}
@@ -1179,7 +1180,8 @@ static void bot_cmd_work(struct work_struct *work)
transport_init_se_cmd(se_cmd,
tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo,
tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE,
- cmd->prio_attr, cmd->sense_iu.sense);
+ cmd->prio_attr, cmd->sense_iu.sense,
+ cmd->unpacked_lun);
goto out;
}
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 6a2bfcca0c98..92f6cb20775e 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -150,8 +150,8 @@ void transport_deregister_session(struct se_session *);
void transport_init_se_cmd(struct se_cmd *,
const struct target_core_fabric_ops *,
- struct se_session *, u32, int, int, unsigned char *);
-sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u64);
+ struct se_session *, u32, int, int, unsigned char *, u64);
+sense_reason_t transport_lookup_cmd_lun(struct se_cmd *);
sense_reason_t target_cmd_init_cdb(struct se_cmd *, unsigned char *);
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 *,
@@ -188,7 +188,7 @@ 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 *, sense_reason_t);
-int transport_lookup_tmr_lun(struct se_cmd *, u64);
+int transport_lookup_tmr_lun(struct se_cmd *);
void core_allocate_nexus_loss_ua(struct se_node_acl *acl);
struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,