From aa80ddbb30e9ffd75e2dcaa58abf6383a5520942 Mon Sep 17 00:00:00 2001 From: Ioana Radulescu 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 --- .../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)