Commit 0fedee1a authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed
Browse files

net/mlx5e: kTLS, Add debugfs 



Add TLS debugfs to improve observability by exposing the size of the tls
TX pool.

To observe the size of the TX pool:
$ cat /sys/kernel/debug/mlx5/<pci>/nic/tls/tx/pool_size

Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Co-developed-by: default avatarGal Pressman <gal@nvidia.com>
Signed-off-by: default avatarGal Pressman <gal@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent 288eca60

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls.c

+22 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

// Copyright (c) 2019 Mellanox Technologies.



#include <linux/debugfs.h>

#include "en.h"

#include "lib/mlx5.h"

#include "en_accel/ktls.h"
@@ -177,6 +178,15 @@ void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv) 
	destroy_workqueue(priv->tls->rx_wq);

}



static void mlx5e_tls_debugfs_init(struct mlx5e_tls *tls,

				   struct dentry *dfs_root)

{

	if (IS_ERR_OR_NULL(dfs_root))

		return;



	tls->debugfs.dfs = debugfs_create_dir("tls", dfs_root);

}



int mlx5e_ktls_init(struct mlx5e_priv *priv)

{

	struct mlx5e_tls *tls;
@@ -189,11 +199,23 @@ int mlx5e_ktls_init(struct mlx5e_priv *priv) 
		return -ENOMEM;



	priv->tls = tls;

	priv->tls->mdev = priv->mdev;



	mlx5e_tls_debugfs_init(tls, priv->dfs_root);



	return 0;

}



void mlx5e_ktls_cleanup(struct mlx5e_priv *priv)

{

	struct mlx5e_tls *tls = priv->tls;



	if (!mlx5e_is_ktls_device(priv->mdev))

		return;



	debugfs_remove_recursive(tls->debugfs.dfs);

	tls->debugfs.dfs = NULL;



	kfree(priv->tls);

	priv->tls = NULL;

}

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls.h

+8 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
#ifndef __MLX5E_KTLS_H__

#define __MLX5E_KTLS_H__



#include <linux/debugfs.h>

#include <linux/tls.h>

#include <net/tls.h>

#include "en.h"
@@ -72,10 +73,17 @@ struct mlx5e_tls_sw_stats { 
	atomic64_t rx_tls_del;

};



struct mlx5e_tls_debugfs {

	struct dentry *dfs;

	struct dentry *dfs_tx;

};



struct mlx5e_tls {

	struct mlx5_core_dev *mdev;

	struct mlx5e_tls_sw_stats sw_stats;

	struct workqueue_struct *rx_wq;

	struct mlx5e_tls_tx_pool *tx_pool;

	struct mlx5e_tls_debugfs debugfs;

};



int mlx5e_ktls_init(struct mlx5e_priv *priv);

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c

+22 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

// Copyright (c) 2019 Mellanox Technologies.



#include <linux/debugfs.h>

#include "en_accel/ktls.h"

#include "en_accel/ktls_txrx.h"

#include "en_accel/ktls_utils.h"
@@ -886,8 +887,24 @@ bool mlx5e_ktls_handle_tx_skb(struct net_device *netdev, struct mlx5e_txqsq *sq, 
	return false;

}



static void mlx5e_tls_tx_debugfs_init(struct mlx5e_tls *tls,

				      struct dentry *dfs_root)

{

	if (IS_ERR_OR_NULL(dfs_root))

		return;



	tls->debugfs.dfs_tx = debugfs_create_dir("tx", dfs_root);

	if (!tls->debugfs.dfs_tx)

		return;



	debugfs_create_size_t("pool_size", 0400, tls->debugfs.dfs_tx,

			      &tls->tx_pool->size);

}



int mlx5e_ktls_init_tx(struct mlx5e_priv *priv)

{

	struct mlx5e_tls *tls = priv->tls;



	if (!mlx5e_is_ktls_tx(priv->mdev))

		return 0;
@@ -895,6 +912,8 @@ int mlx5e_ktls_init_tx(struct mlx5e_priv *priv) 
	if (!priv->tls->tx_pool)

		return -ENOMEM;



	mlx5e_tls_tx_debugfs_init(tls, tls->debugfs.dfs);



	return 0;

}
@@ -903,6 +922,9 @@ void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv) 
	if (!mlx5e_is_ktls_tx(priv->mdev))

		return;



	debugfs_remove_recursive(priv->tls->debugfs.dfs_tx);

	priv->tls->debugfs.dfs_tx = NULL;



	mlx5e_tls_tx_pool_cleanup(priv->tls->tx_pool);

	priv->tls->tx_pool = NULL;

}