/*
* 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_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_ipsec_esn_state {
u32 esn;
u8 trigger: 1;
u8 overlap: 1;
};
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);
};
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);
int mlx5e_ipsec_get_count(struct mlx5e_priv *priv);
int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, uint8_t *data);
void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv);
int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data);
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)
{
}
static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv)
{
return 0;
}
static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv,
uint8_t *data)
{
return 0;
}
static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv)
{
}
static inline int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data)
{
return 0;
}
#endif
#endif /* __MLX5E_IPSEC_H__ */
