/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * xdp_diag: interface for query/monitor XDP sockets
 * Copyright(c) 2019 Intel Corporation.
 */

#ifndef _LINUX_XDP_DIAG_H
#define _LINUX_XDP_DIAG_H

#include <linux/types.h>

struct xdp_diag_req {
        __u8    sdiag_family;
        __u8    sdiag_protocol;
        __u16   pad;
        __u32   xdiag_ino;
        __u32   xdiag_show;
        __u32   xdiag_cookie[2];
};

struct xdp_diag_msg {
        __u8    xdiag_family;
        __u8    xdiag_type;
        __u16   pad;
        __u32   xdiag_ino;
        __u32   xdiag_cookie[2];
};

#define XDP_SHOW_INFO           (1 << 0) /* Basic information */
#define XDP_SHOW_RING_CFG       (1 << 1)
#define XDP_SHOW_UMEM           (1 << 2)
#define XDP_SHOW_MEMINFO        (1 << 3)
#define XDP_SHOW_STATS          (1 << 4)

enum {
        XDP_DIAG_NONE,
        XDP_DIAG_INFO,
        XDP_DIAG_UID,
        XDP_DIAG_RX_RING,
        XDP_DIAG_TX_RING,
        XDP_DIAG_UMEM,
        XDP_DIAG_UMEM_FILL_RING,
        XDP_DIAG_UMEM_COMPLETION_RING,
        XDP_DIAG_MEMINFO,
        XDP_DIAG_STATS,
        __XDP_DIAG_MAX,
};

#define XDP_DIAG_MAX (__XDP_DIAG_MAX - 1)

struct xdp_diag_info {
        __u32   ifindex;
        __u32   queue_id;
};

struct xdp_diag_ring {
        __u32   entries; /*num descs */
};

#define XDP_DU_F_ZEROCOPY (1 << 0)

struct xdp_diag_umem {
        __u64   size;
        __u32   id;
        __u32   num_pages;
        __u32   chunk_size;
        __u32   headroom;
        __u32   ifindex;
        __u32   queue_id;
        __u32   flags;
        __u32   refs;
};

struct xdp_diag_stats {
        __u64   n_rx_dropped;
        __u64   n_rx_invalid;
        __u64   n_rx_full;
        __u64   n_fill_ring_empty;
        __u64   n_tx_invalid;
        __u64   n_tx_ring_empty;
};

#endif /* _LINUX_XDP_DIAG_H */