[PATCH 5.19 0734/1157] scsi: iscsi: Allow iscsi_if_stop_conn() to be called from kernel

Greg Kroah-Hartman
2022-08-16T00:17:49Z

From: Mike Christie <michael.christie@oracle.com>

[ Upstream commit 3328333b47f4163504267440ec0a36087a407a5f ]

iscsi_if_stop_conn() is only called from the userspace interface but in a
subsequent commit we will want to call it from the kernel interface to
allow drivers like qedi to remove sessions from inside the kernel during
shutdown. This removes the iscsi_uevent code from iscsi_if_stop_conn() so we
can call it in a new helper.

Link: https://lore.kernel.org/r/20220616222738.5722-3-michael.christie@oracle.com
Tested-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/scsi_transport_iscsi.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 5d21f07456c6..a410d0b8a445 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -2264,16 +2264,8 @@ static void iscsi_if_disconnect_bound_ep(struct iscsi_cls_conn *conn,
}
}

-static int iscsi_if_stop_conn(struct iscsi_transport *transport,
- struct iscsi_uevent *ev)
+static int iscsi_if_stop_conn(struct iscsi_cls_conn *conn, int flag)
{
- int flag = ev->u.stop_conn.flag;
- struct iscsi_cls_conn *conn;
-
- conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid);
- if (!conn)
- return -EINVAL;
-
ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop.\n");
/*
* If this is a termination we have to call stop_conn with that flag
@@ -3720,7 +3712,12 @@ static int iscsi_if_transport_conn(struct iscsi_transport *transport,
case ISCSI_UEVENT_DESTROY_CONN:
return iscsi_if_destroy_conn(transport, ev);
case ISCSI_UEVENT_STOP_CONN:
- return iscsi_if_stop_conn(transport, ev);
+ conn = iscsi_conn_lookup(ev->u.stop_conn.sid,
+ ev->u.stop_conn.cid);
+ if (!conn)
+ return -EINVAL;
+
+ return iscsi_if_stop_conn(conn, ev->u.stop_conn.flag);
}

/*
--
2.35.1