/*
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* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef __MLX5E_IPSEC_H__
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#define __MLX5E_IPSEC_H__
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#ifdef CONFIG_MLX5_EN_IPSEC
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#include <linux/mlx5/device.h>
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#include <net/xfrm.h>
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#include <linux/idr.h>
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#include "accel/ipsec.h"
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#define MLX5E_IPSEC_SADB_RX_BITS 10
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#define MLX5E_IPSEC_ESN_SCOPE_MID 0x80000000L
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struct mlx5e_priv;
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struct mlx5e_ipsec_sw_stats {
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atomic64_t ipsec_rx_drop_sp_alloc;
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atomic64_t ipsec_rx_drop_sadb_miss;
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atomic64_t ipsec_rx_drop_syndrome;
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atomic64_t ipsec_tx_drop_bundle;
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atomic64_t ipsec_tx_drop_no_state;
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atomic64_t ipsec_tx_drop_not_ip;
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atomic64_t ipsec_tx_drop_trailer;
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atomic64_t ipsec_tx_drop_metadata;
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};
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struct mlx5e_ipsec_stats {
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u64 ipsec_dec_in_packets;
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u64 ipsec_dec_out_packets;
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u64 ipsec_dec_bypass_packets;
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u64 ipsec_enc_in_packets;
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u64 ipsec_enc_out_packets;
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u64 ipsec_enc_bypass_packets;
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u64 ipsec_dec_drop_packets;
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u64 ipsec_dec_auth_fail_packets;
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u64 ipsec_enc_drop_packets;
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u64 ipsec_add_sa_success;
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u64 ipsec_add_sa_fail;
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u64 ipsec_del_sa_success;
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u64 ipsec_del_sa_fail;
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u64 ipsec_cmd_drop;
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};
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struct mlx5e_accel_fs_esp;
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struct mlx5e_ipsec_tx;
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struct mlx5e_ipsec {
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struct mlx5e_priv *en_priv;
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DECLARE_HASHTABLE(sadb_rx, MLX5E_IPSEC_SADB_RX_BITS);
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bool no_trailer;
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spinlock_t sadb_rx_lock; /* Protects sadb_rx and halloc */
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struct ida halloc;
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struct mlx5e_ipsec_sw_stats sw_stats;
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struct mlx5e_ipsec_stats stats;
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struct workqueue_struct *wq;
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struct mlx5e_accel_fs_esp *rx_fs;
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struct mlx5e_ipsec_tx *tx_fs;
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};
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struct mlx5e_ipsec_esn_state {
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u32 esn;
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u8 trigger: 1;
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u8 overlap: 1;
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};
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struct mlx5e_ipsec_rule {
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struct mlx5_flow_handle *rule;
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struct mlx5_modify_hdr *set_modify_hdr;
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};
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struct mlx5e_ipsec_sa_entry {
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struct hlist_node hlist; /* Item in SADB_RX hashtable */
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struct mlx5e_ipsec_esn_state esn_state;
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unsigned int handle; /* Handle in SADB_RX */
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struct xfrm_state *x;
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struct mlx5e_ipsec *ipsec;
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struct mlx5_accel_esp_xfrm *xfrm;
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void *hw_context;
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void (*set_iv_op)(struct sk_buff *skb, struct xfrm_state *x,
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struct xfrm_offload *xo);
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u32 ipsec_obj_id;
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struct mlx5e_ipsec_rule ipsec_rule;
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};
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void mlx5e_ipsec_build_inverse_table(void);
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int mlx5e_ipsec_init(struct mlx5e_priv *priv);
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void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
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void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
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struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev,
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unsigned int handle);
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#else
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static inline void mlx5e_ipsec_build_inverse_table(void)
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{
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}
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static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
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{
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return 0;
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}
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static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
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{
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}
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static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
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{
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}
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#endif
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#endif /* __MLX5E_IPSEC_H__ */
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