From: Bart Van Assche <bart.vanassche@sandisk.com>
Date: Tue, 23 May 2017 16:48:44 -0700
Subject: target/iscsi: Simplify iscsit_free_cmd()
Git-commit: d1c26857cdec3e3bdb5cf7179411f6ce8cc0834c
Patch-mainline: v4.13-rc1
References: fate#323946
Since .se_tfo is only set if a command has been submitted to
the LIO core, check .se_tfo instead of .iscsi_opcode. Since
__iscsit_free_cmd() only affects SCSI commands but not TMFs,
calling that function for TMFs does not change behavior. This
patch does not change the behavior of iscsit_free_cmd().
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/target/iscsi/iscsi_target_util.c | 39 ++++----------------------------
1 file changed, 4 insertions(+), 35 deletions(-)
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 41b9e7cc08b8..1e36f83b5961 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -734,49 +734,18 @@ void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool check_queues)
void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown)
{
- struct se_cmd *se_cmd = NULL;
+ struct se_cmd *se_cmd = cmd->se_cmd.se_tfo ? &cmd->se_cmd : NULL;
int rc;
- /*
- * Determine if a struct se_cmd is associated with
- * this struct iscsi_cmd.
- */
- switch (cmd->iscsi_opcode) {
- case ISCSI_OP_SCSI_CMD:
- /*
- * Fallthrough
- */
- case ISCSI_OP_SCSI_TMFUNC:
- se_cmd = &cmd->se_cmd;
- __iscsit_free_cmd(cmd, shutdown);
+ __iscsit_free_cmd(cmd, shutdown);
+ if (se_cmd) {
rc = transport_generic_free_cmd(se_cmd, shutdown);
if (!rc && shutdown && se_cmd->se_sess) {
__iscsit_free_cmd(cmd, shutdown);
target_put_sess_cmd(se_cmd);
}
- break;
- case ISCSI_OP_REJECT:
- /*
- * Handle special case for REJECT when iscsi_add_reject*() has
- * overwritten the original iscsi_opcode assignment, and the
- * associated cmd->se_cmd needs to be released.
- */
- if (cmd->se_cmd.se_tfo != NULL) {
- se_cmd = &cmd->se_cmd;
- __iscsit_free_cmd(cmd, shutdown);
-
- rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown);
- if (!rc && shutdown && se_cmd->se_sess) {
- __iscsit_free_cmd(cmd, shutdown);
- target_put_sess_cmd(se_cmd);
- }
- break;
- }
- /* Fall-through */
- default:
- __iscsit_free_cmd(cmd, shutdown);
+ } else {
iscsit_release_cmd(cmd);
- break;
}
}
EXPORT_SYMBOL(iscsit_free_cmd);