linux/drivers/net/ethernet/amazon/ena/ena_xdp.h

/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
 * Copyright 2015-2021 Amazon.com, Inc. or its affiliates. All rights reserved.
 */

#ifndef ENA_XDP_H
#define ENA_XDP_H

#include "ena_netdev.h"
#include <linux/bpf_trace.h>

/* The max MTU size is configured to be the ethernet frame size without
 * the overhead of the ethernet header, which can have a VLAN header, and
 * a frame check sequence (FCS).
 * The buffer size we share with the device is defined to be ENA_PAGE_SIZE
 */
#define ENA_XDP_MAX_MTU …

#define ENA_IS_XDP_INDEX(adapter, index) …

enum ENA_XDP_ACTIONS { … };

#define ENA_XDP_FORWARDED …

int ena_setup_and_create_all_xdp_queues(struct ena_adapter *adapter);
void ena_xdp_exchange_program_rx_in_range(struct ena_adapter *adapter,
					  struct bpf_prog *prog,
					  int first, int count);
int ena_xdp_io_poll(struct napi_struct *napi, int budget);
int ena_xdp_xmit_frame(struct ena_ring *tx_ring,
		       struct ena_adapter *adapter,
		       struct xdp_frame *xdpf,
		       int flags);
int ena_xdp_xmit(struct net_device *dev, int n,
		 struct xdp_frame **frames, u32 flags);
int ena_xdp(struct net_device *netdev, struct netdev_bpf *bpf);
int ena_xdp_register_rxq_info(struct ena_ring *rx_ring);
void ena_xdp_unregister_rxq_info(struct ena_ring *rx_ring);

enum ena_xdp_errors_t { … };

static inline bool ena_xdp_present(struct ena_adapter *adapter)
{ … }

static inline bool ena_xdp_present_ring(struct ena_ring *ring)
{ … }

static inline bool ena_xdp_legal_queue_count(struct ena_adapter *adapter,
					     u32 queues)
{ … }

static inline enum ena_xdp_errors_t ena_xdp_allowed(struct ena_adapter *adapter)
{ … }

static inline int ena_xdp_execute(struct ena_ring *rx_ring, struct xdp_buff *xdp)
{ … }
#endif /* ENA_XDP_H */