linux/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_stats.c
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   1/*
   2 * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 *
  32 */
  33
  34#include <linux/ethtool.h>
  35#include <net/sock.h>
  36
  37#include "en.h"
  38#include "fpga/sdk.h"
  39#include "en_accel/tls.h"
  40
  41static const struct counter_desc mlx5e_tls_sw_stats_desc[] = {
  42        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_metadata) },
  43        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_resync_alloc) },
  44        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_no_sync_data) },
  45        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_bypass_required) },
  46};
  47
  48static const struct counter_desc mlx5e_ktls_sw_stats_desc[] = {
  49        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_ctx) },
  50        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_del) },
  51        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, rx_tls_ctx) },
  52        { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, rx_tls_del) },
  53};
  54
  55#define MLX5E_READ_CTR_ATOMIC64(ptr, dsc, i) \
  56        atomic64_read((atomic64_t *)((char *)(ptr) + (dsc)[i].offset))
  57
  58static const struct counter_desc *get_tls_atomic_stats(struct mlx5e_priv *priv)
  59{
  60        if (!priv->tls)
  61                return NULL;
  62        if (mlx5e_accel_is_ktls_device(priv->mdev))
  63                return mlx5e_ktls_sw_stats_desc;
  64        return mlx5e_tls_sw_stats_desc;
  65}
  66
  67int mlx5e_tls_get_count(struct mlx5e_priv *priv)
  68{
  69        if (!priv->tls)
  70                return 0;
  71        if (mlx5e_accel_is_ktls_device(priv->mdev))
  72                return ARRAY_SIZE(mlx5e_ktls_sw_stats_desc);
  73        return ARRAY_SIZE(mlx5e_tls_sw_stats_desc);
  74}
  75
  76int mlx5e_tls_get_strings(struct mlx5e_priv *priv, uint8_t *data)
  77{
  78        const struct counter_desc *stats_desc;
  79        unsigned int i, n, idx = 0;
  80
  81        stats_desc = get_tls_atomic_stats(priv);
  82        n = mlx5e_tls_get_count(priv);
  83
  84        for (i = 0; i < n; i++)
  85                strcpy(data + (idx++) * ETH_GSTRING_LEN,
  86                       stats_desc[i].format);
  87
  88        return n;
  89}
  90
  91int mlx5e_tls_get_stats(struct mlx5e_priv *priv, u64 *data)
  92{
  93        const struct counter_desc *stats_desc;
  94        unsigned int i, n, idx = 0;
  95
  96        stats_desc = get_tls_atomic_stats(priv);
  97        n = mlx5e_tls_get_count(priv);
  98
  99        for (i = 0; i < n; i++)
 100                data[idx++] =
 101                    MLX5E_READ_CTR_ATOMIC64(&priv->tls->sw_stats,
 102                                            stats_desc, i);
 103
 104        return n;
 105}
 106
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