drivers/net/ethernet/netronome/nfp/nfp_net_xsk.h

   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_ */