scsi: qla2xxx: edif: Add detection of secure device

Some FC adapters from Marvell offer the ability to encrypt data in flight
(EDIF). This feature requires an application to act as an authenticator.

There is no FC switch scan service that can indicate whether a device is
secure or non-secure.

In order to detect whether the remote port supports encrypted operation,
driver must first do a PLOGI with the remote device. On completion of the
PLOGI, driver will query firmware to see if the device supports secure
login. To do that, driver + firmware must advertise the security bit via
PLOGI's service parameter. The remote device shall respond using the same
service parameter whether it supports it or not.

Link: https://lore.kernel.org/r/20210624052606.21613-8-njavali@marvell.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Co-developed-by: Larry Wisneski <Larry.Wisneski@marvell.com>
Signed-off-by: Larry Wisneski <Larry.Wisneski@marvell.com>
Co-developed-by: Duane Grigsby <duane.grigsby@marvell.com>
Signed-off-by: Duane Grigsby <duane.grigsby@marvell.com>
Co-developed-by: Rick Hicksted Jr <rhicksted@marvell.com>
Signed-off-by: Rick Hicksted Jr <rhicksted@marvell.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index 8f486bd1201f..51f96f5882af 100644
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -2366,6 +2366,26 @@ qla28xx_sa_update_iocb_entry(scsi_qla_host_t *v, struct req_que *req,
 	sp->done(sp, 0);
 }
 
+/**********************************************
+ * edif update/delete sa_index list functions *
+ **********************************************/
+
+/* clear the edif_indx_list for this port */
+void qla_edif_list_del(fc_port_t *fcport)
+{
+	struct edif_list_entry *indx_lst;
+	struct edif_list_entry *tindx_lst;
+	struct list_head *indx_list = &fcport->edif.edif_indx_list;
+	unsigned long flags = 0;
+
+	spin_lock_irqsave(&fcport->edif.indx_list_lock, flags);
+	list_for_each_entry_safe(indx_lst, tindx_lst, indx_list, next) {
+		list_del(&indx_lst->next);
+		kfree(indx_lst);
+	}
+	spin_unlock_irqrestore(&fcport->edif.indx_list_lock, flags);
+}
+
 /******************
  * SADB functions *
  ******************/
@@ -2791,3 +2811,14 @@ done_free_sp:
 done:
 	return rval;
 }
+
+void qla_edif_sess_down(struct scsi_qla_host *vha, struct fc_port *sess)
+{
+	if (sess->edif.app_sess_online && vha->e_dbell.db_flags & EDB_ACTIVE) {
+		ql_dbg(ql_dbg_disc, vha, 0xf09c,
+			"%s: sess %8phN send port_offline event\n",
+			__func__, sess->port_name);
+		sess->edif.app_sess_online = 0;
+		qla2x00_post_aen_work(vha, FCH_EVT_PORT_OFFLINE, sess->d_id.b24);
+	}
+}