79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
|
/* 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 <bjorn.topel@intel.com>
|
||
|
|
* Magnus Karlsson <magnus.karlsson@intel.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _LINUX_IF_XDP_H
|
||
|
|
#define _LINUX_IF_XDP_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
/* 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 */
|