[linux-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_accel / ktls.h

/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2019 Mellanox Technologies. */

#ifndef __MLX5E_KTLS_H__
#define __MLX5E_KTLS_H__

#include <linux/debugfs.h>
#include <linux/tls.h>
#include <net/tls.h>
#include "en.h"

#ifdef CONFIG_MLX5_EN_TLS
#include "lib/crypto.h"

struct mlx5_crypto_dek *mlx5_ktls_create_key(struct mlx5_crypto_dek_pool *dek_pool,
					     struct tls_crypto_info *crypto_info);
void mlx5_ktls_destroy_key(struct mlx5_crypto_dek_pool *dek_pool,
			   struct mlx5_crypto_dek *dek);

static inline bool mlx5e_is_ktls_device(struct mlx5_core_dev *mdev)
{
	if (is_kdump_kernel())
		return false;

	if (!MLX5_CAP_GEN(mdev, tls_tx) && !MLX5_CAP_GEN(mdev, tls_rx))
		return false;

	if (!MLX5_CAP_GEN(mdev, log_max_dek))
		return false;

	return (MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128) ||
		MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_256));
}

static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
					 struct tls_crypto_info *crypto_info)
{
	switch (crypto_info->cipher_type) {
	case TLS_CIPHER_AES_GCM_128:
		if (crypto_info->version == TLS_1_2_VERSION)
			return MLX5_CAP_TLS(mdev,  tls_1_2_aes_gcm_128);
		break;
	case TLS_CIPHER_AES_GCM_256:
		if (crypto_info->version == TLS_1_2_VERSION)
			return MLX5_CAP_TLS(mdev,  tls_1_2_aes_gcm_256);
		break;
	}

	return false;
}

void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv);
int mlx5e_ktls_init_tx(struct mlx5e_priv *priv);
void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv);
int mlx5e_ktls_init_rx(struct mlx5e_priv *priv);
void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv);
int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable);
struct mlx5e_ktls_resync_resp *
mlx5e_ktls_rx_resync_create_resp_list(void);
void mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list);

static inline bool mlx5e_is_ktls_tx(struct mlx5_core_dev *mdev)
{
	return !is_kdump_kernel() && MLX5_CAP_GEN(mdev, tls_tx);
}

bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev);

struct mlx5e_tls_sw_stats {
	atomic64_t tx_tls_ctx;
	atomic64_t tx_tls_del;
	atomic64_t tx_tls_pool_alloc;
	atomic64_t tx_tls_pool_free;
	atomic64_t rx_tls_ctx;
	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 mlx5_crypto_dek_pool *dek_pool;
	struct mlx5e_tls_debugfs debugfs;
};

int mlx5e_ktls_init(struct mlx5e_priv *priv);
void mlx5e_ktls_cleanup(struct mlx5e_priv *priv);

int mlx5e_ktls_get_count(struct mlx5e_priv *priv);
int mlx5e_ktls_get_strings(struct mlx5e_priv *priv, uint8_t *data);
int mlx5e_ktls_get_stats(struct mlx5e_priv *priv, u64 *data);

#else
static inline void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv)
{
}

static inline int mlx5e_ktls_init_tx(struct mlx5e_priv *priv)
{
	return 0;
}

static inline void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv)
{
}

static inline int mlx5e_ktls_init_rx(struct mlx5e_priv *priv)
{
	return 0;
}

static inline void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv)
{
}

static inline int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable)
{
	netdev_warn(netdev, "kTLS is not supported\n");
	return -EOPNOTSUPP;
}

static inline struct mlx5e_ktls_resync_resp *
mlx5e_ktls_rx_resync_create_resp_list(void)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline void
mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list) {}

static inline bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev)
{
	return false;
}

static inline int mlx5e_ktls_init(struct mlx5e_priv *priv) { return 0; }
static inline void mlx5e_ktls_cleanup(struct mlx5e_priv *priv) { }
static inline int mlx5e_ktls_get_count(struct mlx5e_priv *priv) { return 0; }
static inline int mlx5e_ktls_get_strings(struct mlx5e_priv *priv, uint8_t *data)
{
	return 0;
}

static inline int mlx5e_ktls_get_stats(struct mlx5e_priv *priv, u64 *data)
{
	return 0;
}
#endif

#endif /* __MLX5E_TLS_H__ */
Commit	Line	Data
d2ead1f3 TT	1	/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
	2	/* Copyright (c) 2019 Mellanox Technologies. */
	3
	4	#ifndef __MLX5E_KTLS_H__
	5	#define __MLX5E_KTLS_H__
	6
0fedee1a	7	#include <linux/debugfs.h>
691f17b9	8	#include <linux/tls.h>
943aa7bd	9	#include <net/tls.h>
d2ead1f3 TT	10	#include "en.h"
	11
	12	#ifdef CONFIG_MLX5_EN_TLS
f741db1a JL	13	#include "lib/crypto.h"
	14
	15	struct mlx5_crypto_dek mlx5_ktls_create_key(struct mlx5_crypto_dek_pool dek_pool,
	16	struct tls_crypto_info *crypto_info);
	17	void mlx5_ktls_destroy_key(struct mlx5_crypto_dek_pool *dek_pool,
	18	struct mlx5_crypto_dek *dek);
691f17b9	19
7a9104ea	20	static inline bool mlx5e_is_ktls_device(struct mlx5_core_dev *mdev)
691f17b9	21	{
7a9104ea LR	22	if (is_kdump_kernel())
	23	return false;
	24
691f17b9 LR	25	if (!MLX5_CAP_GEN(mdev, tls_tx) && !MLX5_CAP_GEN(mdev, tls_rx))
	26	return false;
	27
	28	if (!MLX5_CAP_GEN(mdev, log_max_dek))
	29	return false;
	30
4960c414 GP	31	return (MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128) \|\|
4960c414 GP	32	MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_256));
691f17b9 LR	33	}
	34
	35	static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
	36	struct tls_crypto_info *crypto_info)
	37	{
	38	switch (crypto_info->cipher_type) {
	39	case TLS_CIPHER_AES_GCM_128:
	40	if (crypto_info->version == TLS_1_2_VERSION)
	41	return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128);
	42	break;
4960c414 GP	43	case TLS_CIPHER_AES_GCM_256:
	44	if (crypto_info->version == TLS_1_2_VERSION)
	45	return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_256);
	46	break;
691f17b9 LR	47	}
	48
	49	return false;
	50	}
d2ead1f3 TT	51
d2ead1f3 TT	52	void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv);
c4dfe704 TT	53	int mlx5e_ktls_init_tx(struct mlx5e_priv *priv);
c4dfe704 TT	54	void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv);
1182f365 TT	55	int mlx5e_ktls_init_rx(struct mlx5e_priv *priv);
	56	void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv);
	57	int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable);
e9ce991b TT	58	struct mlx5e_ktls_resync_resp *
	59	mlx5e_ktls_rx_resync_create_resp_list(void);
	60	void mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list);
39e8cc6d	61
7a9104ea	62	static inline bool mlx5e_is_ktls_tx(struct mlx5_core_dev *mdev)
39e8cc6d	63	{
3fbf6120	64	return !is_kdump_kernel() && MLX5_CAP_GEN(mdev, tls_tx);
39e8cc6d AH	65	}
39e8cc6d AH	66
4c78782e	67	bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev);
39e8cc6d	68
943aa7bd LR	69	struct mlx5e_tls_sw_stats {
	70	atomic64_t tx_tls_ctx;
	71	atomic64_t tx_tls_del;
c4dfe704 TT	72	atomic64_t tx_tls_pool_alloc;
c4dfe704 TT	73	atomic64_t tx_tls_pool_free;
943aa7bd LR	74	atomic64_t rx_tls_ctx;
	75	atomic64_t rx_tls_del;
	76	};
	77
0fedee1a TT	78	struct mlx5e_tls_debugfs {
	79	struct dentry *dfs;
	80	struct dentry *dfs_tx;
	81	};
	82
943aa7bd	83	struct mlx5e_tls {
0fedee1a	84	struct mlx5_core_dev *mdev;
943aa7bd LR	85	struct mlx5e_tls_sw_stats sw_stats;
943aa7bd LR	86	struct workqueue_struct *rx_wq;
c4dfe704	87	struct mlx5e_tls_tx_pool *tx_pool;
f741db1a	88	struct mlx5_crypto_dek_pool *dek_pool;
0fedee1a	89	struct mlx5e_tls_debugfs debugfs;
943aa7bd LR	90	};
	91
	92	int mlx5e_ktls_init(struct mlx5e_priv *priv);
	93	void mlx5e_ktls_cleanup(struct mlx5e_priv *priv);
	94
	95	int mlx5e_ktls_get_count(struct mlx5e_priv *priv);
	96	int mlx5e_ktls_get_strings(struct mlx5e_priv priv, uint8_t data);
	97	int mlx5e_ktls_get_stats(struct mlx5e_priv priv, u64 data);
	98
d2ead1f3	99	#else
d2ead1f3 TT	100	static inline void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv)
	101	{
	102	}
	103
c4dfe704 TT	104	static inline int mlx5e_ktls_init_tx(struct mlx5e_priv *priv)
	105	{
	106	return 0;
	107	}
	108
	109	static inline void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv)
	110	{
	111	}
	112
1182f365 TT	113	static inline int mlx5e_ktls_init_rx(struct mlx5e_priv *priv)
	114	{
	115	return 0;
	116	}
	117
	118	static inline void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv)
	119	{
	120	}
	121
	122	static inline int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable)
	123	{
	124	netdev_warn(netdev, "kTLS is not supported\n");
	125	return -EOPNOTSUPP;
	126	}
	127
e9ce991b TT	128	static inline struct mlx5e_ktls_resync_resp *
	129	mlx5e_ktls_rx_resync_create_resp_list(void)
	130	{
	131	return ERR_PTR(-EOPNOTSUPP);
	132	}
	133
	134	static inline void
	135	mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list) {}
39e8cc6d	136
7a9104ea LR	137	static inline bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev)
	138	{
	139	return false;
	140	}
39e8cc6d	141
943aa7bd LR	142	static inline int mlx5e_ktls_init(struct mlx5e_priv *priv) { return 0; }
	143	static inline void mlx5e_ktls_cleanup(struct mlx5e_priv *priv) { }
	144	static inline int mlx5e_ktls_get_count(struct mlx5e_priv *priv) { return 0; }
	145	static inline int mlx5e_ktls_get_strings(struct mlx5e_priv priv, uint8_t data)
	146	{
	147	return 0;
	148	}
	149
	150	static inline int mlx5e_ktls_get_stats(struct mlx5e_priv priv, u64 data)
	151	{
	152	return 0;
	153	}
d2ead1f3 TT	154	#endif
	155
	156	#endif /* __MLX5E_TLS_H__ */