/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI__NET_DROPMON_H
#define _UAPI__NET_DROPMON_H

#include <linux/types.h>
#include <linux/netlink.h>

struct net_dm_drop_point {
        __u8 pc[8];
        __u32 count;
};

#define NET_DM_CFG_VERSION  0
#define NET_DM_CFG_ALERT_COUNT  1
#define NET_DM_CFG_ALERT_DELAY 2
#define NET_DM_CFG_MAX 3

struct net_dm_config_entry {
        __u32 type;
        __u64 data __attribute__((aligned(8)));
};

struct net_dm_config_msg {
        __u32 entries;
        struct net_dm_config_entry options[];
};

struct net_dm_alert_msg {
        __u32 entries;
        struct net_dm_drop_point points[];
};

struct net_dm_user_msg {
        union {
                struct net_dm_config_msg user;
                struct net_dm_alert_msg alert;
        } u;
};


/* These are the netlink message types for this protocol */

enum {
        NET_DM_CMD_UNSPEC = 0,
        NET_DM_CMD_ALERT,
        NET_DM_CMD_CONFIG,
        NET_DM_CMD_START,
        NET_DM_CMD_STOP,
        NET_DM_CMD_PACKET_ALERT,
        NET_DM_CMD_CONFIG_GET,
        NET_DM_CMD_CONFIG_NEW,
        NET_DM_CMD_STATS_GET,
        NET_DM_CMD_STATS_NEW,
        _NET_DM_CMD_MAX,
};

#define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1)

/*
 * Our group identifiers
 */
#define NET_DM_GRP_ALERT 1

enum net_dm_attr {
        NET_DM_ATTR_UNSPEC,

        NET_DM_ATTR_ALERT_MODE,                 /* u8 */
        NET_DM_ATTR_PC,                         /* u64 */
        NET_DM_ATTR_SYMBOL,                     /* string */
        NET_DM_ATTR_IN_PORT,                    /* nested */
        NET_DM_ATTR_TIMESTAMP,                  /* u64 */
        NET_DM_ATTR_PROTO,                      /* u16 */
        NET_DM_ATTR_PAYLOAD,                    /* binary */
        NET_DM_ATTR_PAD,
        NET_DM_ATTR_TRUNC_LEN,                  /* u32 */
        NET_DM_ATTR_ORIG_LEN,                   /* u32 */
        NET_DM_ATTR_QUEUE_LEN,                  /* u32 */
        NET_DM_ATTR_STATS,                      /* nested */
        NET_DM_ATTR_HW_STATS,                   /* nested */
        NET_DM_ATTR_ORIGIN,                     /* u16 */
        NET_DM_ATTR_HW_TRAP_GROUP_NAME,         /* string */
        NET_DM_ATTR_HW_TRAP_NAME,               /* string */
        NET_DM_ATTR_HW_ENTRIES,                 /* nested */
        NET_DM_ATTR_HW_ENTRY,                   /* nested */
        NET_DM_ATTR_HW_TRAP_COUNT,              /* u32 */
        NET_DM_ATTR_SW_DROPS,                   /* flag */
        NET_DM_ATTR_HW_DROPS,                   /* flag */
        NET_DM_ATTR_FLOW_ACTION_COOKIE,         /* binary */
        NET_DM_ATTR_REASON,                     /* string */

        __NET_DM_ATTR_MAX,
        NET_DM_ATTR_MAX = __NET_DM_ATTR_MAX - 1
};

/**
 * enum net_dm_alert_mode - Alert mode.
 * @NET_DM_ALERT_MODE_SUMMARY: A summary of recent drops is sent to user space.
 * @NET_DM_ALERT_MODE_PACKET: Each dropped packet is sent to user space along
 *                            with metadata.
 */
enum net_dm_alert_mode {
        NET_DM_ALERT_MODE_SUMMARY,
        NET_DM_ALERT_MODE_PACKET,
};

enum {
        NET_DM_ATTR_PORT_NETDEV_IFINDEX,        /* u32 */
        NET_DM_ATTR_PORT_NETDEV_NAME,           /* string */

        __NET_DM_ATTR_PORT_MAX,
        NET_DM_ATTR_PORT_MAX = __NET_DM_ATTR_PORT_MAX - 1
};

enum {
        NET_DM_ATTR_STATS_DROPPED,              /* u64 */

        __NET_DM_ATTR_STATS_MAX,
        NET_DM_ATTR_STATS_MAX = __NET_DM_ATTR_STATS_MAX - 1
};

enum net_dm_origin {
        NET_DM_ORIGIN_SW,
        NET_DM_ORIGIN_HW,
};

#endif