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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/drivers/scsi/iscsi_tcp.c
..
..
@@ -721,13 +721,12 @@
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 		iscsi_set_param(cls_conn, param, buf, buflen);
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 		break;
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 	case ISCSI_PARAM_DATADGST_EN:
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-		iscsi_set_param(cls_conn, param, buf, buflen);
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-
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 		mutex_lock(&tcp_sw_conn->sock_lock);
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 		if (!tcp_sw_conn->sock) {
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 			mutex_unlock(&tcp_sw_conn->sock_lock);
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 			return -ENOTCONN;
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 		}
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+		iscsi_set_param(cls_conn, param, buf, buflen);
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 		tcp_sw_conn->sendpage = conn->datadgst_en ?
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 			sock_no_sendpage : tcp_sw_conn->sock->ops->sendpage;
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 		mutex_unlock(&tcp_sw_conn->sock_lock);
..
..
@@ -802,7 +801,7 @@
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 				       enum iscsi_host_param param, char *buf)
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 {
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 	struct iscsi_sw_tcp_host *tcp_sw_host = iscsi_host_priv(shost);
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-	struct iscsi_session *session = tcp_sw_host->session;
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+	struct iscsi_session *session;
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 	struct iscsi_conn *conn;
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 	struct iscsi_tcp_conn *tcp_conn;
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 	struct iscsi_sw_tcp_conn *tcp_sw_conn;
..
..
@@ -812,6 +811,7 @@
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 	switch (param) {
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 	case ISCSI_HOST_PARAM_IPADDRESS:
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+		session = tcp_sw_host->session;
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 		if (!session)
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 			return -ENOTCONN;
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..
..
@@ -906,12 +906,14 @@
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 	if (!cls_session)
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 		goto remove_host;
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 	session = cls_session->dd_data;
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-	tcp_sw_host = iscsi_host_priv(shost);
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-	tcp_sw_host->session = session;
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 	shost->can_queue = session->scsi_cmds_max;
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 	if (iscsi_tcp_r2tpool_alloc(session))
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 		goto remove_session;
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+
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+	/* We are now fully setup so expose the session to sysfs. */
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+	tcp_sw_host = iscsi_host_priv(shost);
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+	tcp_sw_host->session = session;
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 	return cls_session;
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 remove_session: