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From aa80ddbb30e9ffd75e2dcaa58abf6383a5520942 Mon Sep 17 00:00:00 2001
From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Date: Wed, 13 Feb 2019 12:23:41 +0200
Subject: [PATCH] dpaa2-eth: Add reset controls for debugfs stats
Allow the user to reset statistics counters through debugfs entries.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
---
.../ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c | 64 ++++++++++++++++++++++
1 file changed, 64 insertions(+)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
@@ -167,6 +167,62 @@ static const struct file_operations dpaa
.release = single_release,
};
+static ssize_t dpaa2_dbg_reset_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct dpaa2_eth_priv *priv = file->private_data;
+ struct rtnl_link_stats64 *percpu_stats;
+ struct dpaa2_eth_drv_stats *percpu_extras;
+ struct dpaa2_eth_fq *fq;
+ struct dpaa2_eth_channel *ch;
+ int i;
+
+ for_each_online_cpu(i) {
+ percpu_stats = per_cpu_ptr(priv->percpu_stats, i);
+ memset(percpu_stats, 0, sizeof(*percpu_stats));
+
+ percpu_extras = per_cpu_ptr(priv->percpu_extras, i);
+ memset(percpu_extras, 0, sizeof(*percpu_extras));
+ }
+
+ for (i = 0; i < priv->num_fqs; i++) {
+ fq = &priv->fq[i];
+ memset(&fq->stats, 0, sizeof(fq->stats));
+ }
+
+ for (i = 0; i < priv->num_channels; i++) {
+ ch = priv->channel[i];
+ memset(&ch->stats, 0, sizeof(ch->stats));
+ }
+
+ return count;
+}
+
+static const struct file_operations dpaa2_dbg_reset_ops = {
+ .open = simple_open,
+ .write = dpaa2_dbg_reset_write,
+};
+
+static ssize_t dpaa2_dbg_reset_mc_write(struct file *file,
+ const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct dpaa2_eth_priv *priv = file->private_data;
+ int err;
+
+ err = dpni_reset_statistics(priv->mc_io, 0, priv->mc_token);
+ if (err)
+ netdev_err(priv->net_dev,
+ "dpni_reset_statistics() failed %d\n", err);
+
+ return count;
+}
+
+static const struct file_operations dpaa2_dbg_reset_mc_ops = {
+ .open = simple_open,
+ .write = dpaa2_dbg_reset_mc_write,
+};
+
void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
{
struct dentry *dir;
@@ -183,6 +239,14 @@ void dpaa2_dbg_add(struct dpaa2_eth_priv
/* per-fq stats file */
debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops);
+
+ /* reset stats */
+ debugfs_create_file("reset_stats", 0200, dir, priv,
+ &dpaa2_dbg_reset_ops);
+
+ /* reset MC stats */
+ debugfs_create_file("reset_mc_stats", 0222, dir, priv,
+ &dpaa2_dbg_reset_mc_ops);
}
void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
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