linux-kernel - [PATCH 5.15 435/779] scsi: iscsi: Allow iscsi_if_stop

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Message-Id: <20220815180355.880296578@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 20:01:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Nilesh Javali <njavali@...vell.com>,
        Mike Christie <michael.christie@...cle.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 435/779] scsi: iscsi: Allow iscsi_if_stop_conn() to be called from kernel

From: Mike Christie <michael.christie@...cle.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@...vell.com>
Reviewed-by: Nilesh Javali <njavali@...vell.com>
Signed-off-by: Mike Christie <michael.christie@...cle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.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 5947b9d5746e..671a03b80c30 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -2283,16 +2283,8 @@ 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
@@ -3739,7 +3731,12 @@ 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