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path: root/drivers/target/loopback
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-rw-r--r--drivers/target/loopback/tcm_loop.c66
-rw-r--r--drivers/target/loopback/tcm_loop.h7
2 files changed, 24 insertions, 49 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index dda9a08c939f..6b3c32954689 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -138,7 +138,7 @@ static void tcm_loop_submission_work(struct work_struct *work)
set_host_byte(sc, DID_TRANSPORT_DISRUPTED);
goto out_done;
}
- tl_nexus = tl_hba->tl_nexus;
+ tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus) {
scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus"
" does not exist\n");
@@ -218,16 +218,26 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
* to struct scsi_device
*/
static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
- struct tcm_loop_nexus *tl_nexus,
int lun, int task, enum tcm_tmreq_table tmr)
{
struct se_cmd *se_cmd = NULL;
struct se_session *se_sess;
struct se_portal_group *se_tpg;
+ struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_cmd *tl_cmd = NULL;
struct tcm_loop_tmr *tl_tmr = NULL;
int ret = TMR_FUNCTION_FAILED, rc;
+ /*
+ * Locate the tl_nexus and se_sess pointers
+ */
+ tl_nexus = tl_tpg->tl_nexus;
+ if (!tl_nexus) {
+ pr_err("Unable to perform device reset without"
+ " active I_T Nexus\n");
+ return ret;
+ }
+
tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
if (!tl_cmd) {
pr_err("Unable to allocate memory for tl_cmd\n");
@@ -243,7 +253,7 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
se_cmd = &tl_cmd->tl_se_cmd;
se_tpg = &tl_tpg->tl_se_tpg;
- se_sess = tl_nexus->se_sess;
+ se_sess = tl_tpg->tl_nexus->se_sess;
/*
* Initialize struct se_cmd descriptor from target_core_mod infrastructure
*/
@@ -288,7 +298,6 @@ release:
static int tcm_loop_abort_task(struct scsi_cmnd *sc)
{
struct tcm_loop_hba *tl_hba;
- struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_tpg *tl_tpg;
int ret = FAILED;
@@ -296,21 +305,8 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
* Locate the tcm_loop_hba_t pointer
*/
tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
- /*
- * Locate the tl_nexus and se_sess pointers
- */
- tl_nexus = tl_hba->tl_nexus;
- if (!tl_nexus) {
- pr_err("Unable to perform device reset without"
- " active I_T Nexus\n");
- return FAILED;
- }
-
- /*
- * Locate the tl_tpg pointer from TargetID in sc->device->id
- */
tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
- ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+ ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
sc->request->tag, TMR_ABORT_TASK);
return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
}
@@ -322,7 +318,6 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
static int tcm_loop_device_reset(struct scsi_cmnd *sc)
{
struct tcm_loop_hba *tl_hba;
- struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_tpg *tl_tpg;
int ret = FAILED;
@@ -330,20 +325,9 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
* Locate the tcm_loop_hba_t pointer
*/
tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
- /*
- * Locate the tl_nexus and se_sess pointers
- */
- tl_nexus = tl_hba->tl_nexus;
- if (!tl_nexus) {
- pr_err("Unable to perform device reset without"
- " active I_T Nexus\n");
- return FAILED;
- }
- /*
- * Locate the tl_tpg pointer from TargetID in sc->device->id
- */
tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
- ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+
+ ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
0, TMR_LUN_RESET);
return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
}
@@ -939,8 +923,8 @@ static int tcm_loop_make_nexus(
struct tcm_loop_nexus *tl_nexus;
int ret = -ENOMEM;
- if (tl_tpg->tl_hba->tl_nexus) {
- pr_debug("tl_tpg->tl_hba->tl_nexus already exists\n");
+ if (tl_tpg->tl_nexus) {
+ pr_debug("tl_tpg->tl_nexus already exists\n");
return -EEXIST;
}
se_tpg = &tl_tpg->tl_se_tpg;
@@ -975,7 +959,7 @@ static int tcm_loop_make_nexus(
*/
__transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl,
tl_nexus->se_sess, tl_nexus);
- tl_tpg->tl_hba->tl_nexus = tl_nexus;
+ tl_tpg->tl_nexus = tl_nexus;
pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
name);
@@ -991,12 +975,8 @@ static int tcm_loop_drop_nexus(
{
struct se_session *se_sess;
struct tcm_loop_nexus *tl_nexus;
- struct tcm_loop_hba *tl_hba = tpg->tl_hba;
- if (!tl_hba)
- return -ENODEV;
-
- tl_nexus = tl_hba->tl_nexus;
+ tl_nexus = tpg->tl_nexus;
if (!tl_nexus)
return -ENODEV;
@@ -1012,13 +992,13 @@ static int tcm_loop_drop_nexus(
}
pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated"
- " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
+ " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba),
tl_nexus->se_sess->se_node_acl->initiatorname);
/*
* Release the SCSI I_T Nexus to the emulated SAS Target Port
*/
transport_deregister_session(tl_nexus->se_sess);
- tpg->tl_hba->tl_nexus = NULL;
+ tpg->tl_nexus = NULL;
kfree(tl_nexus);
return 0;
}
@@ -1034,7 +1014,7 @@ static ssize_t tcm_loop_tpg_show_nexus(
struct tcm_loop_nexus *tl_nexus;
ssize_t ret;
- tl_nexus = tl_tpg->tl_hba->tl_nexus;
+ tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus)
return -ENODEV;
diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h
index 54c59d0b6608..6ae49f272ba6 100644
--- a/drivers/target/loopback/tcm_loop.h
+++ b/drivers/target/loopback/tcm_loop.h
@@ -27,11 +27,6 @@ struct tcm_loop_tmr {
};
struct tcm_loop_nexus {
- int it_nexus_active;
- /*
- * Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
- */
- struct scsi_host *sh;
/*
* Pointer to TCM session for I_T Nexus
*/
@@ -51,6 +46,7 @@ struct tcm_loop_tpg {
atomic_t tl_tpg_port_count;
struct se_portal_group tl_se_tpg;
struct tcm_loop_hba *tl_hba;
+ struct tcm_loop_nexus *tl_nexus;
};
struct tcm_loop_hba {
@@ -59,7 +55,6 @@ struct tcm_loop_hba {
struct se_hba_s *se_hba;
struct se_lun *tl_hba_lun;
struct se_port *tl_hba_lun_sep;
- struct tcm_loop_nexus *tl_nexus;
struct device dev;
struct Scsi_Host *sh;
struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];

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