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authorHannes Reinecke <hare@suse.de>2013-10-16 11:12:56 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2013-10-17 02:42:52 +0400
commit8f4a1fb0d029feef385986f320c7b4c13d9fce40 (patch)
tree4a9de2474eaaba3d83510b733b130bc9c43c4653 /drivers/target
parent969871cdc2d0f5a81d6733450b5334d14fce2b75 (diff)
downloadlinux-8f4a1fb0d029feef385986f320c7b4c13d9fce40.tar.xz
tcm_loop: Implement target reset
Implement target reset by resetting the transport status. (nab: Remove unused ret in tcm_loop_target_reset) Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/loopback/tcm_loop.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 04811caac487..1b41e6776152 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -392,6 +392,31 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc)
return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
}
+static int tcm_loop_target_reset(struct scsi_cmnd *sc)
+{
+ struct tcm_loop_hba *tl_hba;
+ struct tcm_loop_tpg *tl_tpg;
+
+ /*
+ * Locate the tcm_loop_hba_t pointer
+ */
+ tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
+ if (!tl_hba) {
+ 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];
+ if (tl_tpg) {
+ tl_tpg->tl_transport_status = TCM_TRANSPORT_ONLINE;
+ return SUCCESS;
+ }
+ return FAILED;
+}
+
static int tcm_loop_slave_alloc(struct scsi_device *sd)
{
set_bit(QUEUE_FLAG_BIDI, &sd->request_queue->queue_flags);
@@ -421,6 +446,7 @@ static struct scsi_host_template tcm_loop_driver_template = {
.change_queue_type = tcm_loop_change_queue_type,
.eh_abort_handler = tcm_loop_abort_task,
.eh_device_reset_handler = tcm_loop_device_reset,
+ .eh_target_reset_handler = tcm_loop_target_reset,
.can_queue = 1024,
.this_id = -1,
.sg_tablesize = 256,