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https://github.com/edk2-porting/linux-next.git
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dac09149d9
Clean up SPDX-License-Identifier and removing licensing leftovers. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* if_xdp: XDP socket user-space interface
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* Copyright(c) 2018 Intel Corporation.
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*
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* Author(s): Björn Töpel <bjorn.topel@intel.com>
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* Magnus Karlsson <magnus.karlsson@intel.com>
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*/
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#ifndef _LINUX_IF_XDP_H
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#define _LINUX_IF_XDP_H
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#include <linux/types.h>
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/* Options for the sxdp_flags field */
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#define XDP_SHARED_UMEM 1
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struct sockaddr_xdp {
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__u16 sxdp_family;
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__u32 sxdp_ifindex;
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__u32 sxdp_queue_id;
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__u32 sxdp_shared_umem_fd;
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__u16 sxdp_flags;
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};
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/* XDP socket options */
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#define XDP_RX_RING 1
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#define XDP_TX_RING 2
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#define XDP_UMEM_REG 3
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#define XDP_UMEM_FILL_RING 4
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#define XDP_UMEM_COMPLETION_RING 5
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#define XDP_STATISTICS 6
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struct xdp_umem_reg {
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__u64 addr; /* Start of packet data area */
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__u64 len; /* Length of packet data area */
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__u32 frame_size; /* Frame size */
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__u32 frame_headroom; /* Frame head room */
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};
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struct xdp_statistics {
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__u64 rx_dropped; /* Dropped for reasons other than invalid desc */
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__u64 rx_invalid_descs; /* Dropped due to invalid descriptor */
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__u64 tx_invalid_descs; /* Dropped due to invalid descriptor */
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};
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/* Pgoff for mmaping the rings */
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#define XDP_PGOFF_RX_RING 0
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#define XDP_PGOFF_TX_RING 0x80000000
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#define XDP_UMEM_PGOFF_FILL_RING 0x100000000
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#define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000
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struct xdp_desc {
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__u32 idx;
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__u32 len;
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__u16 offset;
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__u8 flags;
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__u8 padding[5];
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};
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struct xdp_ring {
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__u32 producer __attribute__((aligned(64)));
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__u32 consumer __attribute__((aligned(64)));
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};
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/* Used for the RX and TX queues for packets */
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struct xdp_rxtx_ring {
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struct xdp_ring ptrs;
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struct xdp_desc desc[0] __attribute__((aligned(64)));
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};
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/* Used for the fill and completion queues for buffers */
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struct xdp_umem_ring {
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struct xdp_ring ptrs;
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__u32 desc[0] __attribute__((aligned(64)));
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};
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#endif /* _LINUX_IF_XDP_H */
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