1/* SPDX-License-Identifier: GPL-2.0-or-later
2 *
3 * Linux driver for VMware's vmxnet3 ethernet NIC.
4 * Copyright (C) 2008-2023, VMware, Inc. All Rights Reserved.
5 * Maintained by: pv-drivers@vmware.com
6 *
7 */
8
9#ifndef _VMXNET3_XDP_H
10#define _VMXNET3_XDP_H
11
12#include <linux/filter.h>
13#include <linux/bpf_trace.h>
14#include <linux/netlink.h>
15
16#include "vmxnet3_int.h"
17
18#define VMXNET3_XDP_HEADROOM	(XDP_PACKET_HEADROOM + NET_IP_ALIGN)
19#define VMXNET3_XDP_RX_TAILROOM	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
20#define VMXNET3_XDP_RX_OFFSET	VMXNET3_XDP_HEADROOM
21#define VMXNET3_XDP_MAX_FRSIZE	(PAGE_SIZE - VMXNET3_XDP_HEADROOM - \
22				 VMXNET3_XDP_RX_TAILROOM)
23#define VMXNET3_XDP_MAX_MTU	(VMXNET3_XDP_MAX_FRSIZE - ETH_HLEN - \
24				 2 * VLAN_HLEN - ETH_FCS_LEN)
25
26int vmxnet3_xdp(struct net_device *netdev, struct netdev_bpf *bpf);
27int vmxnet3_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
28		     u32 flags);
29int vmxnet3_process_xdp(struct vmxnet3_adapter *adapter,
30			struct vmxnet3_rx_queue *rq,
31			struct Vmxnet3_RxCompDesc *rcd,
32			struct vmxnet3_rx_buf_info *rbi,
33			struct Vmxnet3_RxDesc *rxd,
34			struct sk_buff **skb_xdp_pass);
35int vmxnet3_process_xdp_small(struct vmxnet3_adapter *adapter,
36			      struct vmxnet3_rx_queue *rq,
37			      void *data, int len,
38			      struct sk_buff **skb_xdp_pass);
39void *vmxnet3_pp_get_buff(struct page_pool *pp, dma_addr_t *dma_addr,
40			  gfp_t gfp_mask);
41
42static inline bool vmxnet3_xdp_enabled(struct vmxnet3_adapter *adapter)
43{
44	return !!rcu_access_pointer(adapter->xdp_bpf_prog);
45}
46
47#endif
48