10a714186SBjörn Töpel /* SPDX-License-Identifier: GPL-2.0 */ 20a714186SBjörn Töpel /* Copyright(c) 2018 Intel Corporation. */ 30a714186SBjörn Töpel 40a714186SBjörn Töpel #ifndef _I40E_XSK_H_ 50a714186SBjörn Töpel #define _I40E_XSK_H_ 60a714186SBjörn Töpel 7*3106c580SMagnus Karlsson /* This value should match the pragma in the loop_unrolled_for 8*3106c580SMagnus Karlsson * macro. Why 4? It is strictly empirical. It seems to be a good 9*3106c580SMagnus Karlsson * compromise between the advantage of having simultaneous outstanding 10*3106c580SMagnus Karlsson * reads to the DMA array that can hide each others latency and the 11*3106c580SMagnus Karlsson * disadvantage of having a larger code path. 12*3106c580SMagnus Karlsson */ 13*3106c580SMagnus Karlsson #define PKTS_PER_BATCH 4 14*3106c580SMagnus Karlsson 15*3106c580SMagnus Karlsson #ifdef __clang__ 16*3106c580SMagnus Karlsson #define loop_unrolled_for _Pragma("clang loop unroll_count(4)") for 17*3106c580SMagnus Karlsson #elif __GNUC__ >= 8 18*3106c580SMagnus Karlsson #define loop_unrolled_for _Pragma("GCC unroll 4") for 19*3106c580SMagnus Karlsson #else 20*3106c580SMagnus Karlsson #define loop_unrolled_for for 21*3106c580SMagnus Karlsson #endif 22*3106c580SMagnus Karlsson 230a714186SBjörn Töpel struct i40e_vsi; 241742b3d5SMagnus Karlsson struct xsk_buff_pool; 250a714186SBjörn Töpel struct zero_copy_allocator; 260a714186SBjörn Töpel 270a714186SBjörn Töpel int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair); 280a714186SBjörn Töpel int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair); 291742b3d5SMagnus Karlsson int i40e_xsk_pool_setup(struct i40e_vsi *vsi, struct xsk_buff_pool *pool, 300a714186SBjörn Töpel u16 qid); 310a714186SBjörn Töpel bool i40e_alloc_rx_buffers_zc(struct i40e_ring *rx_ring, u16 cleaned_count); 320a714186SBjörn Töpel int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget); 330a714186SBjörn Töpel 345574ff7bSMagnus Karlsson bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring); 359116e5e2SMagnus Karlsson int i40e_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags); 36be1222b5SBjörn Töpel int i40e_alloc_rx_bi_zc(struct i40e_ring *rx_ring); 37be1222b5SBjörn Töpel void i40e_clear_rx_bi_zc(struct i40e_ring *rx_ring); 381328dcddSMagnus Karlsson 390a714186SBjörn Töpel #endif /* _I40E_XSK_H_ */ 40