1 /*
2 * Copyright (c) 2018 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_TLS_RXTX_H__
35 #define __MLX5E_TLS_RXTX_H__
36
37 #include "accel/accel.h"
38 #include "en_accel/ktls_txrx.h"
39
40 #ifdef CONFIG_MLX5_EN_TLS
41
42 #include <linux/skbuff.h>
43 #include "en.h"
44 #include "en/txrx.h"
45
46 u16 mlx5e_tls_get_stop_room(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
47
48 bool mlx5e_tls_handle_tx_skb(struct net_device *netdev, struct mlx5e_txqsq *sq,
49 struct sk_buff *skb, struct mlx5e_accel_tx_tls_state *state);
50
mlx5e_tls_skb_offloaded(struct sk_buff * skb)51 static inline bool mlx5e_tls_skb_offloaded(struct sk_buff *skb)
52 {
53 return skb->sk && tls_is_sk_tx_device_offloaded(skb->sk);
54 }
55
56 static inline void
mlx5e_tls_handle_tx_wqe(struct mlx5_wqe_ctrl_seg * cseg,struct mlx5e_accel_tx_tls_state * state)57 mlx5e_tls_handle_tx_wqe(struct mlx5_wqe_ctrl_seg *cseg,
58 struct mlx5e_accel_tx_tls_state *state)
59 {
60 cseg->tis_tir_num = cpu_to_be32(state->tls_tisn << 8);
61 }
62
63 void mlx5e_tls_handle_rx_skb_metadata(struct mlx5e_rq *rq, struct sk_buff *skb,
64 u32 *cqe_bcnt);
65
66 static inline void
mlx5e_tls_handle_rx_skb(struct mlx5e_rq * rq,struct sk_buff * skb,struct mlx5_cqe64 * cqe,u32 * cqe_bcnt)67 mlx5e_tls_handle_rx_skb(struct mlx5e_rq *rq, struct sk_buff *skb,
68 struct mlx5_cqe64 *cqe, u32 *cqe_bcnt)
69 {
70 if (unlikely(get_cqe_tls_offload(cqe))) /* cqe bit indicates a TLS device */
71 return mlx5e_ktls_handle_rx_skb(rq, skb, cqe, cqe_bcnt);
72
73 if (unlikely(test_bit(MLX5E_RQ_STATE_FPGA_TLS, &rq->state) && is_metadata_hdr_valid(skb)))
74 return mlx5e_tls_handle_rx_skb_metadata(rq, skb, cqe_bcnt);
75 }
76
77 #else
78
79 static inline bool
mlx5e_accel_is_tls(struct mlx5_cqe64 * cqe,struct sk_buff * skb)80 mlx5e_accel_is_tls(struct mlx5_cqe64 *cqe, struct sk_buff *skb) { return false; }
81 static inline void
mlx5e_tls_handle_rx_skb(struct mlx5e_rq * rq,struct sk_buff * skb,struct mlx5_cqe64 * cqe,u32 * cqe_bcnt)82 mlx5e_tls_handle_rx_skb(struct mlx5e_rq *rq, struct sk_buff *skb,
83 struct mlx5_cqe64 *cqe, u32 *cqe_bcnt) {}
mlx5e_tls_get_stop_room(struct mlx5_core_dev * mdev,struct mlx5e_params * params)84 static inline u16 mlx5e_tls_get_stop_room(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
85 {
86 return 0;
87 }
88
89 #endif /* CONFIG_MLX5_EN_TLS */
90
91 #endif /* __MLX5E_TLS_RXTX_H__ */
92