[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_accel / ipsec.h

/*
 * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef __MLX5E_IPSEC_H__
#define __MLX5E_IPSEC_H__

#ifdef CONFIG_MLX5_EN_IPSEC

#include <linux/mlx5/device.h>
#include <net/xfrm.h>
#include <linux/idr.h>

#include "accel/ipsec.h"

#define MLX5E_IPSEC_SADB_RX_BITS 10
#define MLX5E_IPSEC_ESN_SCOPE_MID 0x80000000L

struct mlx5e_priv;

struct mlx5e_ipsec_sw_stats {
	atomic64_t ipsec_rx_drop_sp_alloc;
	atomic64_t ipsec_rx_drop_sadb_miss;
	atomic64_t ipsec_rx_drop_syndrome;
	atomic64_t ipsec_tx_drop_bundle;
	atomic64_t ipsec_tx_drop_no_state;
	atomic64_t ipsec_tx_drop_not_ip;
	atomic64_t ipsec_tx_drop_trailer;
	atomic64_t ipsec_tx_drop_metadata;
};

struct mlx5e_ipsec_stats {
	u64 ipsec_dec_in_packets;
	u64 ipsec_dec_out_packets;
	u64 ipsec_dec_bypass_packets;
	u64 ipsec_enc_in_packets;
	u64 ipsec_enc_out_packets;
	u64 ipsec_enc_bypass_packets;
	u64 ipsec_dec_drop_packets;
	u64 ipsec_dec_auth_fail_packets;
	u64 ipsec_enc_drop_packets;
	u64 ipsec_add_sa_success;
	u64 ipsec_add_sa_fail;
	u64 ipsec_del_sa_success;
	u64 ipsec_del_sa_fail;
	u64 ipsec_cmd_drop;
};

struct mlx5e_accel_fs_esp;

struct mlx5e_ipsec {
	struct mlx5e_priv *en_priv;
	DECLARE_HASHTABLE(sadb_rx, MLX5E_IPSEC_SADB_RX_BITS);
	bool no_trailer;
	spinlock_t sadb_rx_lock; /* Protects sadb_rx and halloc */
	struct ida halloc;
	struct mlx5e_ipsec_sw_stats sw_stats;
	struct mlx5e_ipsec_stats stats;
	struct workqueue_struct *wq;
	struct mlx5e_accel_fs_esp *rx_fs;
};

struct mlx5e_ipsec_esn_state {
	u32 esn;
	u8 trigger: 1;
	u8 overlap: 1;
};

struct mlx5e_ipsec_rule {
	struct mlx5_flow_handle *rule;
	struct mlx5_modify_hdr *set_modify_hdr;
};

struct mlx5e_ipsec_sa_entry {
	struct hlist_node hlist; /* Item in SADB_RX hashtable */
	struct mlx5e_ipsec_esn_state esn_state;
	unsigned int handle; /* Handle in SADB_RX */
	struct xfrm_state *x;
	struct mlx5e_ipsec *ipsec;
	struct mlx5_accel_esp_xfrm *xfrm;
	void *hw_context;
	void (*set_iv_op)(struct sk_buff *skb, struct xfrm_state *x,
			  struct xfrm_offload *xo);
	u32 ipsec_obj_id;
	struct mlx5e_ipsec_rule ipsec_rule;
};

void mlx5e_ipsec_build_inverse_table(void);
int mlx5e_ipsec_init(struct mlx5e_priv *priv);
void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);

struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev,
					      unsigned int handle);

#else

static inline void mlx5e_ipsec_build_inverse_table(void)
{
}

static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
{
	return 0;
}

static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
{
}

static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
{
}

#endif

#endif	/* __MLX5E_IPSEC_H__ */
Commit	Line	Data
547eede0 IT	1	/*
	2	* Copyright (c) 2017 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	#ifndef __MLX5E_IPSEC_H__
	35	#define __MLX5E_IPSEC_H__
	36
	37	#ifdef CONFIG_MLX5_EN_IPSEC
	38
	39	#include <linux/mlx5/device.h>
	40	#include <net/xfrm.h>
	41	#include <linux/idr.h>
	42
cb010083 AY	43	#include "accel/ipsec.h"
cb010083 AY	44
547eede0	45	#define MLX5E_IPSEC_SADB_RX_BITS 10
cb010083 AY	46	#define MLX5E_IPSEC_ESN_SCOPE_MID 0x80000000L
cb010083 AY	47
547eede0 IT	48	struct mlx5e_priv;
547eede0 IT	49
899a59d3 IT	50	struct mlx5e_ipsec_sw_stats {
	51	atomic64_t ipsec_rx_drop_sp_alloc;
	52	atomic64_t ipsec_rx_drop_sadb_miss;
	53	atomic64_t ipsec_rx_drop_syndrome;
2ac9cfe7 IT	54	atomic64_t ipsec_tx_drop_bundle;
	55	atomic64_t ipsec_tx_drop_no_state;
	56	atomic64_t ipsec_tx_drop_not_ip;
	57	atomic64_t ipsec_tx_drop_trailer;
	58	atomic64_t ipsec_tx_drop_metadata;
899a59d3 IT	59	};
899a59d3 IT	60
164f16f7 IT	61	struct mlx5e_ipsec_stats {
	62	u64 ipsec_dec_in_packets;
	63	u64 ipsec_dec_out_packets;
	64	u64 ipsec_dec_bypass_packets;
	65	u64 ipsec_enc_in_packets;
	66	u64 ipsec_enc_out_packets;
	67	u64 ipsec_enc_bypass_packets;
	68	u64 ipsec_dec_drop_packets;
	69	u64 ipsec_dec_auth_fail_packets;
	70	u64 ipsec_enc_drop_packets;
	71	u64 ipsec_add_sa_success;
	72	u64 ipsec_add_sa_fail;
	73	u64 ipsec_del_sa_success;
	74	u64 ipsec_del_sa_fail;
	75	u64 ipsec_cmd_drop;
	76	};
	77
5e466345 HN	78	struct mlx5e_accel_fs_esp;
5e466345 HN	79
547eede0 IT	80	struct mlx5e_ipsec {
	81	struct mlx5e_priv *en_priv;
	82	DECLARE_HASHTABLE(sadb_rx, MLX5E_IPSEC_SADB_RX_BITS);
788a8210	83	bool no_trailer;
547eede0 IT	84	spinlock_t sadb_rx_lock; /* Protects sadb_rx and halloc */
547eede0 IT	85	struct ida halloc;
899a59d3	86	struct mlx5e_ipsec_sw_stats sw_stats;
164f16f7	87	struct mlx5e_ipsec_stats stats;
cb010083	88	struct workqueue_struct *wq;
5e466345	89	struct mlx5e_accel_fs_esp *rx_fs;
cb010083 AY	90	};
	91
	92	struct mlx5e_ipsec_esn_state {
	93	u32 esn;
	94	u8 trigger: 1;
	95	u8 overlap: 1;
	96	};
	97
5e466345 HN	98	struct mlx5e_ipsec_rule {
	99	struct mlx5_flow_handle *rule;
	100	struct mlx5_modify_hdr *set_modify_hdr;
	101	};
	102
cb010083 AY	103	struct mlx5e_ipsec_sa_entry {
	104	struct hlist_node hlist; /* Item in SADB_RX hashtable */
	105	struct mlx5e_ipsec_esn_state esn_state;
	106	unsigned int handle; /* Handle in SADB_RX */
	107	struct xfrm_state *x;
	108	struct mlx5e_ipsec *ipsec;
	109	struct mlx5_accel_esp_xfrm *xfrm;
	110	void *hw_context;
	111	void (set_iv_op)(struct sk_buff skb, struct xfrm_state *x,
	112	struct xfrm_offload *xo);
5e466345 HN	113	u32 ipsec_obj_id;
5e466345 HN	114	struct mlx5e_ipsec_rule ipsec_rule;
547eede0 IT	115	};
547eede0 IT	116
2ac9cfe7	117	void mlx5e_ipsec_build_inverse_table(void);
547eede0 IT	118	int mlx5e_ipsec_init(struct mlx5e_priv *priv);
	119	void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
	120	void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
	121
	122	struct xfrm_state mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec dev,
	123	unsigned int handle);
	124
	125	#else
	126
2ac9cfe7 IT	127	static inline void mlx5e_ipsec_build_inverse_table(void)
	128	{
	129	}
	130
547eede0 IT	131	static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
	132	{
	133	return 0;
	134	}
	135
	136	static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
	137	{
	138	}
	139
	140	static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
	141	{
	142	}
	143
	144	#endif
	145
	146	#endif /* __MLX5E_IPSEC_H__ */