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��R���IEND�B` /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * if_xdp: XDP socket user-space interface * Copyright(c) 2018 Intel Corporation. * * Author(s): Björn Töpel * Magnus Karlsson */ #ifndef _LINUX_IF_XDP_H #define _LINUX_IF_XDP_H #include /* Options for the sxdp_flags field */ #define XDP_SHARED_UMEM (1 << 0) #define XDP_COPY (1 << 1) /* Force copy-mode */ #define XDP_ZEROCOPY (1 << 2) /* Force zero-copy mode */ struct sockaddr_xdp { __u16 sxdp_family; __u16 sxdp_flags; __u32 sxdp_ifindex; __u32 sxdp_queue_id; __u32 sxdp_shared_umem_fd; }; struct xdp_ring_offset { __u64 producer; __u64 consumer; __u64 desc; }; struct xdp_mmap_offsets { struct xdp_ring_offset rx; struct xdp_ring_offset tx; struct xdp_ring_offset fr; /* Fill */ struct xdp_ring_offset cr; /* Completion */ }; /* XDP socket options */ #define XDP_MMAP_OFFSETS 1 #define XDP_RX_RING 2 #define XDP_TX_RING 3 #define XDP_UMEM_REG 4 #define XDP_UMEM_FILL_RING 5 #define XDP_UMEM_COMPLETION_RING 6 #define XDP_STATISTICS 7 struct xdp_umem_reg { __u64 addr; /* Start of packet data area */ __u64 len; /* Length of packet data area */ __u32 chunk_size; __u32 headroom; }; struct xdp_statistics { __u64 rx_dropped; /* Dropped for reasons other than invalid desc */ __u64 rx_invalid_descs; /* Dropped due to invalid descriptor */ __u64 tx_invalid_descs; /* Dropped due to invalid descriptor */ }; /* Pgoff for mmaping the rings */ #define XDP_PGOFF_RX_RING 0 #define XDP_PGOFF_TX_RING 0x80000000 #define XDP_UMEM_PGOFF_FILL_RING 0x100000000ULL #define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000ULL /* Rx/Tx descriptor */ struct xdp_desc { __u64 addr; __u32 len; __u32 options; }; /* UMEM descriptor is __u64 */ #endif /* _LINUX_IF_XDP_H */