@@ -12,6 +12,61 @@
static struct dentry *qla2x00_dfs_root;
static atomic_t qla2x00_dfs_root_count;
+#define QLA_DFS_RPORT_DEVLOSS_TMO 1
+
+static int
+qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val)
+{
+ switch (attr_id) {
+ case QLA_DFS_RPORT_DEVLOSS_TMO:
+ /* Only supported for FC-NVMe devices that are registered. */
+ if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
+ return -EIO;
+ *val = fp->nvme_remote_port->dev_loss_tmo;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int
+qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val)
+{
+ switch (attr_id) {
+ case QLA_DFS_RPORT_DEVLOSS_TMO:
+ /* Only supported for FC-NVMe devices that are registered. */
+ if (!(fp->nvme_flag & NVME_FLAG_REGISTERED))
+ return -EIO;
+#if (IS_ENABLED(CONFIG_NVME_FC))
+ return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port,
+ val);
+#else /* CONFIG_NVME_FC */
+ return -EINVAL;
+#endif /* CONFIG_NVME_FC */
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+#define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr) \
+static int qla_dfs_rport_##_attr##_get(void *data, u64 *val) \
+{ \
+ struct fc_port *fp = data; \
+ return qla_dfs_rport_get(fp, _attr_id, val); \
+} \
+static int qla_dfs_rport_##_attr##_set(void *data, u64 val) \
+{ \
+ struct fc_port *fp = data; \
+ return qla_dfs_rport_set(fp, _attr_id, val); \
+} \
+DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops, \
+ qla_dfs_rport_##_attr##_get, \
+ qla_dfs_rport_##_attr##_set, "%llu\n")
+
+DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo);
+
void
qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
{
@@ -24,6 +79,9 @@ qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root);
if (!fp->dfs_rport_dir)
return;
+ if (NVME_TARGET(vha->hw, fp))
+ debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir,
+ fp, &qla_dfs_rport_dev_loss_tmo_fops);
}
void