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 48