/*
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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_RXTX_H__
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#define __MLX5E_IPSEC_RXTX_H__
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#include <linux/skbuff.h>
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#include <net/xfrm.h>
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#include "en.h"
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#include "en/txrx.h"
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/* Bit31: IPsec marker, Bit30-24: IPsec syndrome, Bit23-0: IPsec obj id */
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#define MLX5_IPSEC_METADATA_MARKER(metadata) (((metadata) >> 31) & 0x1)
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#define MLX5_IPSEC_METADATA_SYNDROM(metadata) (((metadata) >> 24) & GENMASK(6, 0))
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#define MLX5_IPSEC_METADATA_HANDLE(metadata) ((metadata) & GENMASK(23, 0))
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struct mlx5e_accel_tx_ipsec_state {
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struct xfrm_offload *xo;
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struct xfrm_state *x;
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u32 tailen;
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u32 plen;
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};
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#ifdef CONFIG_MLX5_EN_IPSEC
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struct sk_buff *mlx5e_ipsec_handle_rx_skb(struct net_device *netdev,
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struct sk_buff *skb, u32 *cqe_bcnt);
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void mlx5e_ipsec_inverse_table_init(void);
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bool mlx5e_ipsec_feature_check(struct sk_buff *skb, struct net_device *netdev,
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netdev_features_t features);
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void mlx5e_ipsec_set_iv_esn(struct sk_buff *skb, struct xfrm_state *x,
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struct xfrm_offload *xo);
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void mlx5e_ipsec_set_iv(struct sk_buff *skb, struct xfrm_state *x,
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struct xfrm_offload *xo);
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bool mlx5e_ipsec_handle_tx_skb(struct net_device *netdev,
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struct sk_buff *skb,
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struct mlx5e_accel_tx_ipsec_state *ipsec_st);
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void mlx5e_ipsec_handle_tx_wqe(struct mlx5e_tx_wqe *wqe,
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struct mlx5e_accel_tx_ipsec_state *ipsec_st,
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struct mlx5_wqe_inline_seg *inlseg);
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void mlx5e_ipsec_offload_handle_rx_skb(struct net_device *netdev,
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struct sk_buff *skb,
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struct mlx5_cqe64 *cqe);
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static inline unsigned int mlx5e_ipsec_tx_ids_len(struct mlx5e_accel_tx_ipsec_state *ipsec_st)
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{
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return ipsec_st->tailen;
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}
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static inline bool mlx5_ipsec_is_rx_flow(struct mlx5_cqe64 *cqe)
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{
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return MLX5_IPSEC_METADATA_MARKER(be32_to_cpu(cqe->ft_metadata));
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}
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static inline bool mlx5e_ipsec_is_tx_flow(struct mlx5e_accel_tx_ipsec_state *ipsec_st)
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{
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return ipsec_st->x;
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}
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void mlx5e_ipsec_tx_build_eseg(struct mlx5e_priv *priv, struct sk_buff *skb,
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struct mlx5_wqe_eth_seg *eseg);
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#else
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static inline
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void mlx5e_ipsec_offload_handle_rx_skb(struct net_device *netdev,
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struct sk_buff *skb,
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struct mlx5_cqe64 *cqe)
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{}
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static inline bool mlx5_ipsec_is_rx_flow(struct mlx5_cqe64 *cqe) { return false; }
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#endif /* CONFIG_MLX5_EN_IPSEC */
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#endif /* __MLX5E_IPSEC_RXTX_H__ */
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