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net/mlx5e: kTLS, Add debugfs

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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: Tariq Toukan <tariqt@nvidia.com>
Co-developed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Tariq Toukan 2022-05-03 11:47:54 +03:00 committed by Saeed Mahameed
parent 288eca60cc
commit 0fedee1ae9
3 changed files with 52 additions and 0 deletions
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22
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls.c
View File

@ -1,6 +1,7 @@
// 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;
}

8
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls.h
View File

@ -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);

22
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
View File

@ -1,6 +1,7 @@
// 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 @@ err_out:
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;
}