drivers/net/vmxnet3/vmxnet3_xdp.h

   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
  26 int vmxnet3_xdp(struct net_device *netdev, struct netdev_bpf *bpf);
  27 int vmxnet3_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
  28                      u32 flags);
  29 int 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);
  35 int 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);
  39 void *vmxnet3_pp_get_buff(struct page_pool *pp, dma_addr_t *dma_addr,
  40                           gfp_t gfp_mask);
  41
  42 static inline bool vmxnet3_xdp_enabled(struct vmxnet3_adapter *adapter)
  43 {
  44         return !!rcu_access_pointer(adapter->xdp_bpf_prog);
  45 }
  46
  47 #endif