ktls_utils.h

 1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
 2/* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved. */
 3
 4#ifndef __MLX5E_KTLS_UTILS_H__
 5#define __MLX5E_KTLS_UTILS_H__
 6
 7#include <net/tls.h>
 8#include "en.h"
 9
10enum {
11	MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_NO_OFFLOAD     = 0,
12	MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_OFFLOAD        = 1,
13	MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_AUTHENTICATION = 2,
14};
15
16enum {
17	MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_START     = 0,
18	MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_TRACKING  = 1,
19	MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_SEARCHING = 2,
20};
21
22int mlx5e_ktls_add_tx(struct net_device *netdev, struct sock *sk,
23		      struct tls_crypto_info *crypto_info, u32 start_offload_tcp_sn);
24void mlx5e_ktls_del_tx(struct net_device *netdev, struct tls_context *tls_ctx);
25int mlx5e_ktls_add_rx(struct net_device *netdev, struct sock *sk,
26		      struct tls_crypto_info *crypto_info, u32 start_offload_tcp_sn);
27void mlx5e_ktls_del_rx(struct net_device *netdev, struct tls_context *tls_ctx);
28void mlx5e_ktls_rx_resync(struct net_device *netdev, struct sock *sk, u32 seq, u8 *rcd_sn);
29
30union mlx5e_crypto_info {
31	struct tls_crypto_info crypto_info;
32	struct tls12_crypto_info_aes_gcm_128 crypto_info_128;
33	struct tls12_crypto_info_aes_gcm_256 crypto_info_256;
34};
35
36struct mlx5e_set_tls_static_params_wqe {
37	struct mlx5_wqe_ctrl_seg ctrl;
38	struct mlx5_wqe_umr_ctrl_seg uctrl;
39	struct mlx5_mkey_seg mkc;
40	struct mlx5_wqe_tls_static_params_seg params;
41};
42
43struct mlx5e_set_tls_progress_params_wqe {
44	struct mlx5_wqe_ctrl_seg ctrl;
45	struct mlx5_wqe_tls_progress_params_seg params;
46};
47
48struct mlx5e_get_tls_progress_params_wqe {
49	struct mlx5_wqe_ctrl_seg ctrl;
50	struct mlx5_seg_get_psv  psv;
51};
52
53#define MLX5E_TLS_SET_STATIC_PARAMS_WQEBBS \
54	(DIV_ROUND_UP(sizeof(struct mlx5e_set_tls_static_params_wqe), MLX5_SEND_WQE_BB))
55
56#define MLX5E_TLS_SET_PROGRESS_PARAMS_WQEBBS \
57	(DIV_ROUND_UP(sizeof(struct mlx5e_set_tls_progress_params_wqe), MLX5_SEND_WQE_BB))
58
59#define MLX5E_KTLS_GET_PROGRESS_WQEBBS \
60	(DIV_ROUND_UP(sizeof(struct mlx5e_get_tls_progress_params_wqe), MLX5_SEND_WQE_BB))
61
62#define MLX5E_TLS_FETCH_SET_STATIC_PARAMS_WQE(sq, pi) \
63	((struct mlx5e_set_tls_static_params_wqe *)\
64	 mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5e_set_tls_static_params_wqe)))
65
66#define MLX5E_TLS_FETCH_SET_PROGRESS_PARAMS_WQE(sq, pi) \
67	((struct mlx5e_set_tls_progress_params_wqe *)\
68	 mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5e_set_tls_progress_params_wqe)))
69
70#define MLX5E_TLS_FETCH_GET_PROGRESS_PARAMS_WQE(sq, pi) \
71	((struct mlx5e_get_tls_progress_params_wqe *)\
72	 mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5e_get_tls_progress_params_wqe)))
73
74#define MLX5E_TLS_FETCH_DUMP_WQE(sq, pi) \
75	((struct mlx5e_dump_wqe *)\
76	 mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5e_dump_wqe)))
77
78void
79mlx5e_ktls_build_static_params(struct mlx5e_set_tls_static_params_wqe *wqe,
80			       u16 pc, u32 sqn,
81			       union mlx5e_crypto_info *crypto_info,
82			       u32 tis_tir_num, u32 key_id, u32 resync_tcp_sn,
83			       bool fence, enum tls_offload_ctx_dir direction);
84void
85mlx5e_ktls_build_progress_params(struct mlx5e_set_tls_progress_params_wqe *wqe,
86				 u16 pc, u32 sqn,
87				 u32 tis_tir_num, bool fence,
88				 u32 next_record_tcp_sn,
89				 enum tls_offload_ctx_dir direction);
90
91#endif /* __MLX5E_TLS_UTILS_H__ */