Commit 091a19ea authored by Ioana Radulescu's avatar Ioana Radulescu Committed by David S. Miller
Browse files

dpaa2-eth: add debugfs statistics 



Export detailed driver counters through debugfs.

Statistics already available in ethtool are presented in a
structured manner. Includes per-core, per-FQ and per-channel statistics.

Also transition from module_fsl_mc_driver to explicit module_init/exit
in order to create the debugfs directory besides registering the driver.

Signed-off-by: default avatarIoana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 186f21be

drivers/net/ethernet/freescale/dpaa2/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ obj-$(CONFIG_FSL_DPAA2_ETH) += fsl-dpaa2-eth.o 
obj-$(CONFIG_FSL_DPAA2_PTP_CLOCK)	+= fsl-dpaa2-ptp.o



fsl-dpaa2-eth-objs	:= dpaa2-eth.o dpaa2-ethtool.o dpni.o

fsl-dpaa2-eth-${CONFIG_DEBUG_FS} += dpaa2-eth-debugfs.o

fsl-dpaa2-ptp-objs	:= dpaa2-ptp.o dprtc.o



# Needed by the tracing framework

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c

0 → 100644
+237 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)

/* Copyright 2015 Freescale Semiconductor Inc.

 * Copyright 2018-2019 NXP

 */

#include <linux/module.h>

#include <linux/debugfs.h>

#include "dpaa2-eth.h"

#include "dpaa2-eth-debugfs.h"



#define DPAA2_ETH_DBG_ROOT "dpaa2-eth"



static struct dentry *dpaa2_dbg_root;



static int dpaa2_dbg_cpu_show(struct seq_file *file, void *offset)

{

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;

	struct rtnl_link_stats64 *stats;

	struct dpaa2_eth_drv_stats *extras;

	int i;



	seq_printf(file, "Per-CPU stats for %s\n", priv->net_dev->name);

	seq_printf(file, "%s%16s%16s%16s%16s%16s%16s%16s%16s%16s\n",

		   "CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf",

		   "Tx SG", "Tx realloc", "Enq busy");



	for_each_online_cpu(i) {

		stats = per_cpu_ptr(priv->percpu_stats, i);

		extras = per_cpu_ptr(priv->percpu_extras, i);

		seq_printf(file, "%3d%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu\n",

			   i,

			   stats->rx_packets,

			   stats->rx_errors,

			   extras->rx_sg_frames,

			   stats->tx_packets,

			   stats->tx_errors,

			   extras->tx_conf_frames,

			   extras->tx_sg_frames,

			   extras->tx_reallocs,

			   extras->tx_portal_busy);

	}



	return 0;

}



static int dpaa2_dbg_cpu_open(struct inode *inode, struct file *file)

{

	int err;

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;



	err = single_open(file, dpaa2_dbg_cpu_show, priv);

	if (err < 0)

		netdev_err(priv->net_dev, "single_open() failed\n");



	return err;

}



static const struct file_operations dpaa2_dbg_cpu_ops = {

	.open = dpaa2_dbg_cpu_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static char *fq_type_to_str(struct dpaa2_eth_fq *fq)

{

	switch (fq->type) {

	case DPAA2_RX_FQ:

		return "Rx";

	case DPAA2_TX_CONF_FQ:

		return "Tx conf";

	default:

		return "N/A";

	}

}



static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset)

{

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;

	struct dpaa2_eth_fq *fq;

	u32 fcnt, bcnt;

	int i, err;



	seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name);

	seq_printf(file, "%s%16s%16s%16s%16s\n",

		   "VFQID", "CPU", "Type", "Frames", "Pending frames");



	for (i = 0; i <  priv->num_fqs; i++) {

		fq = &priv->fq[i];

		err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt);

		if (err)

			fcnt = 0;



		seq_printf(file, "%5d%16d%16s%16llu%16u\n",

			   fq->fqid,

			   fq->target_cpu,

			   fq_type_to_str(fq),

			   fq->stats.frames,

			   fcnt);

	}



	return 0;

}



static int dpaa2_dbg_fqs_open(struct inode *inode, struct file *file)

{

	int err;

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;



	err = single_open(file, dpaa2_dbg_fqs_show, priv);

	if (err < 0)

		netdev_err(priv->net_dev, "single_open() failed\n");



	return err;

}



static const struct file_operations dpaa2_dbg_fq_ops = {

	.open = dpaa2_dbg_fqs_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)

{

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;

	struct dpaa2_eth_channel *ch;

	int i;



	seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);

	seq_printf(file, "%s%16s%16s%16s%16s\n",

		   "CHID", "CPU", "Deq busy", "CDANs", "Buf count");



	for (i = 0; i < priv->num_channels; i++) {

		ch = priv->channel[i];

		seq_printf(file, "%4d%16d%16llu%16llu%16d\n",

			   ch->ch_id,

			   ch->nctx.desired_cpu,

			   ch->stats.dequeue_portal_busy,

			   ch->stats.cdan,

			   ch->buf_count);

	}



	return 0;

}



static int dpaa2_dbg_ch_open(struct inode *inode, struct file *file)

{

	int err;

	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private;



	err = single_open(file, dpaa2_dbg_ch_show, priv);

	if (err < 0)

		netdev_err(priv->net_dev, "single_open() failed\n");



	return err;

}



static const struct file_operations dpaa2_dbg_ch_ops = {

	.open = dpaa2_dbg_ch_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)

{

	if (!dpaa2_dbg_root)

		return;



	/* Create a directory for the interface */

	priv->dbg.dir = debugfs_create_dir(priv->net_dev->name,

					   dpaa2_dbg_root);

	if (!priv->dbg.dir) {

		netdev_err(priv->net_dev, "debugfs_create_dir() failed\n");

		return;

	}



	/* per-cpu stats file */

	priv->dbg.cpu_stats = debugfs_create_file("cpu_stats", 0444,

						  priv->dbg.dir, priv,

						  &dpaa2_dbg_cpu_ops);

	if (!priv->dbg.cpu_stats) {

		netdev_err(priv->net_dev, "debugfs_create_file() failed\n");

		goto err_cpu_stats;

	}



	/* per-fq stats file */

	priv->dbg.fq_stats = debugfs_create_file("fq_stats", 0444,

						 priv->dbg.dir, priv,

						 &dpaa2_dbg_fq_ops);

	if (!priv->dbg.fq_stats) {

		netdev_err(priv->net_dev, "debugfs_create_file() failed\n");

		goto err_fq_stats;

	}



	/* per-fq stats file */

	priv->dbg.ch_stats = debugfs_create_file("ch_stats", 0444,

						 priv->dbg.dir, priv,

						 &dpaa2_dbg_ch_ops);

	if (!priv->dbg.fq_stats) {

		netdev_err(priv->net_dev, "debugfs_create_file() failed\n");

		goto err_ch_stats;

	}



	return;



err_ch_stats:

	debugfs_remove(priv->dbg.fq_stats);

err_fq_stats:

	debugfs_remove(priv->dbg.cpu_stats);

err_cpu_stats:

	debugfs_remove(priv->dbg.dir);

}



void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)

{

	debugfs_remove(priv->dbg.fq_stats);

	debugfs_remove(priv->dbg.ch_stats);

	debugfs_remove(priv->dbg.cpu_stats);

	debugfs_remove(priv->dbg.dir);

}



void dpaa2_eth_dbg_init(void)

{

	dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);

	if (!dpaa2_dbg_root) {

		pr_err("DPAA2-ETH: debugfs create failed\n");

		return;

	}



	pr_debug("DPAA2-ETH: debugfs created\n");

}



void dpaa2_eth_dbg_exit(void)

{

	debugfs_remove(dpaa2_dbg_root);

}

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h

0 → 100644
+31 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */

/* Copyright 2015 Freescale Semiconductor Inc.

 * Copyright 2018-2019 NXP

 */

#ifndef DPAA2_ETH_DEBUGFS_H

#define DPAA2_ETH_DEBUGFS_H



#include <linux/dcache.h>



struct dpaa2_eth_priv;



struct dpaa2_debugfs {

	struct dentry *dir;

	struct dentry *fq_stats;

	struct dentry *ch_stats;

	struct dentry *cpu_stats;

};



#ifdef CONFIG_DEBUG_FS

void dpaa2_eth_dbg_init(void);

void dpaa2_eth_dbg_exit(void);

void dpaa2_dbg_add(struct dpaa2_eth_priv *priv);

void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv);

#else

static inline void dpaa2_eth_dbg_init(void) {}

static inline void dpaa2_eth_dbg_exit(void) {}

static inline void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) {}

static inline void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) {}

#endif /* CONFIG_DEBUG_FS */



#endif /* DPAA2_ETH_DEBUGFS_H */

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

+29 −1
Original line number Diff line number Diff line
@@ -3083,6 +3083,10 @@ static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev) 
		goto err_netdev_reg;

	}



#ifdef CONFIG_DEBUG_FS

	dpaa2_dbg_add(priv);

#endif



	dev_info(dev, "Probed interface %s\n", net_dev->name);

	return 0;
@@ -3126,6 +3130,9 @@ static int dpaa2_eth_remove(struct fsl_mc_device *ls_dev) 
	net_dev = dev_get_drvdata(dev);

	priv = netdev_priv(net_dev);



#ifdef CONFIG_DEBUG_FS

	dpaa2_dbg_remove(priv);

#endif

	unregister_netdev(net_dev);



	if (priv->do_link_poll)
@@ -3170,4 +3177,25 @@ static struct fsl_mc_driver dpaa2_eth_driver = { 
	.match_id_table = dpaa2_eth_match_id_table

};



module_fsl_mc_driver(dpaa2_eth_driver);
 
static int __init dpaa2_eth_driver_init(void)

{

	int err;



	dpaa2_eth_dbg_init();

	err = fsl_mc_driver_register(&dpaa2_eth_driver);

	if (err) {

		dpaa2_eth_dbg_exit();

		return err;

	}



	return 0;

}



static void __exit dpaa2_eth_driver_exit(void)

{

	dpaa2_eth_dbg_exit();

	fsl_mc_driver_unregister(&dpaa2_eth_driver);

}



module_init(dpaa2_eth_driver_init);

module_exit(dpaa2_eth_driver_exit);

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h

+4 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include "dpni-cmd.h"



#include "dpaa2-eth-trace.h"

#include "dpaa2-eth-debugfs.h"



#define DPAA2_WRIOP_VERSION(x, y, z) ((x) << 10 | (y) << 5 | (z) << 0)
@@ -365,6 +366,9 @@ struct dpaa2_eth_priv { 
	struct dpaa2_eth_cls_rule *cls_rules;

	u8 rx_cls_enabled;

	struct bpf_prog *xdp_prog;

#ifdef CONFIG_DEBUG_FS

	struct dpaa2_debugfs dbg;

#endif

};



#define DPAA2_RXH_SUPPORTED	(RXH_L2DA | RXH_VLAN | RXH_L3_PROTO \

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