1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ 2 /* Copyright (C) 2018 Netronome Systems, Inc */ 3 /* Copyright (C) 2021 Corigine, Inc */ 4 5 #ifndef _NFP_XSK_H_ 6 #define _NFP_XSK_H_ 7 8 #include <net/xdp_sock_drv.h> 9 10 #define NFP_NET_XSK_TX_BATCH 16 /* XSK TX transmission batch size. */ 11 12 static inline bool nfp_net_has_xsk_pool_slow(struct nfp_net_dp *dp, 13 unsigned int qid) 14 { 15 return dp->xdp_prog && dp->xsk_pools[qid]; 16 } 17 18 static inline int nfp_net_rx_space(struct nfp_net_rx_ring *rx_ring) 19 { 20 return rx_ring->cnt - rx_ring->wr_p + rx_ring->rd_p - 1; 21 } 22 23 static inline int nfp_net_tx_space(struct nfp_net_tx_ring *tx_ring) 24 { 25 return tx_ring->cnt - tx_ring->wr_p + tx_ring->rd_p - 1; 26 } 27 28 void nfp_net_xsk_rx_unstash(struct nfp_net_xsk_rx_buf *rxbuf); 29 void nfp_net_xsk_rx_free(struct nfp_net_xsk_rx_buf *rxbuf); 30 void nfp_net_xsk_rx_drop(struct nfp_net_r_vector *r_vec, 31 struct nfp_net_xsk_rx_buf *xrxbuf); 32 int nfp_net_xsk_setup_pool(struct net_device *netdev, struct xsk_buff_pool *pool, 33 u16 queue_id); 34 35 void nfp_net_xsk_rx_bufs_free(struct nfp_net_rx_ring *rx_ring); 36 37 void nfp_net_xsk_rx_ring_fill_freelist(struct nfp_net_rx_ring *rx_ring); 38 39 int nfp_net_xsk_wakeup(struct net_device *netdev, u32 queue_id, u32 flags); 40 41 #endif /* _NFP_XSK_H_ */ 42