1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright(c) 2018 Intel Corporation. */ 3 4#ifndef _I40E_XSK_H_ 5#define _I40E_XSK_H_ 6 7/* This value should match the pragma in the loop_unrolled_for 8 * macro. Why 4? It is strictly empirical. It seems to be a good 9 * compromise between the advantage of having simultaneous outstanding 10 * reads to the DMA array that can hide each others latency and the 11 * disadvantage of having a larger code path. 12 */ 13#define PKTS_PER_BATCH 4 14 15#ifdef __clang__ 16#define loop_unrolled_for _Pragma("clang loop unroll_count(4)") for 17#elif __GNUC__ >= 8 18#define loop_unrolled_for _Pragma("GCC unroll 4") for 19#else 20#define loop_unrolled_for for 21#endif 22 23struct i40e_vsi; 24struct xsk_buff_pool; 25struct zero_copy_allocator; 26 27int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair); 28int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair); 29int i40e_xsk_pool_setup(struct i40e_vsi *vsi, struct xsk_buff_pool *pool, 30 u16 qid); 31bool i40e_alloc_rx_buffers_zc(struct i40e_ring *rx_ring, u16 cleaned_count); 32int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget); 33 34bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring); 35int i40e_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags); 36int i40e_alloc_rx_bi_zc(struct i40e_ring *rx_ring); 37void i40e_clear_rx_bi_zc(struct i40e_ring *rx_ring); 38 39#endif /* _I40E_XSK_H_ */ 40