1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2/* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
3
4#ifndef __MLX5_EN_SELQ_H__
5#define __MLX5_EN_SELQ_H__
6
7#include <linux/kernel.h>
8
9struct mlx5e_selq_params;
10
11struct mlx5e_selq {
12	struct mlx5e_selq_params __rcu *active;
13	struct mlx5e_selq_params *standby;
14	struct mutex *state_lock; /* points to priv->state_lock */
15	bool is_prepared;
16};
17
18struct mlx5e_params;
19struct net_device;
20struct sk_buff;
21
22int mlx5e_selq_init(struct mlx5e_selq *selq, struct mutex *state_lock);
23void mlx5e_selq_cleanup(struct mlx5e_selq *selq);
24void mlx5e_selq_prepare_params(struct mlx5e_selq *selq, struct mlx5e_params *params);
25void mlx5e_selq_prepare_htb(struct mlx5e_selq *selq, u16 htb_maj_id, u16 htb_defcls);
26bool mlx5e_selq_is_htb_enabled(struct mlx5e_selq *selq);
27void mlx5e_selq_apply(struct mlx5e_selq *selq);
28void mlx5e_selq_cancel(struct mlx5e_selq *selq);
29
30static inline u16 mlx5e_txq_to_ch_ix(u16 txq, u16 num_channels)
31{
32	while (unlikely(txq >= num_channels))
33		txq -= num_channels;
34	return txq;
35}
36
37static inline u16 mlx5e_txq_to_ch_ix_htb(u16 txq, u16 num_channels)
38{
39	if (unlikely(txq >= num_channels)) {
40		if (unlikely(txq >= num_channels << 3))
41			txq %= num_channels;
42		else
43			do
44				txq -= num_channels;
45			while (txq >= num_channels);
46	}
47	return txq;
48}
49
50u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
51		       struct net_device *sb_dev);
52
53#endif /* __MLX5_EN_SELQ_H__ */
54