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authorArun Easi <aeasi@marvell.com>2020-09-04 07:51:18 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2020-09-23 01:42:39 +0300
commit27c8aa5e1b069b7629e41bba83b522f99132a6b6 (patch)
treec7d97c2c9185ba32d93e621fddaf391d48e726e6 /drivers/scsi/qla2xxx
parent1e98fb0f9208da058e2b6627f9f19fa0a95d05cd (diff)
downloadlinux-27c8aa5e1b069b7629e41bba83b522f99132a6b6.tar.xz
scsi: qla2xxx: Allow dev_loss_tmo setting for FC-NVMe devices
Add a remote port debugfs entry to get/set dev_loss_tmo for NVMe devices. Link: https://lore.kernel.org/r/20200904045128.23631-4-njavali@marvell.com Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Arun Easi <aeasi@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r--drivers/scsi/qla2xxx/qla_dfs.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index 3c4b9b549b17..616ce891818d 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -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