Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef __NET_DROPMON_H
3#define __NET_DROPMON_H
4
5#include <linux/types.h>
6#include <linux/netlink.h>
7
8struct net_dm_drop_point {
9 __u8 pc[8];
10 __u32 count;
11};
12
13#define is_drop_point_hw(x) do {\
14 int ____i, ____j;\
15 for (____i = 0; ____i < 8; i ____i++)\
16 ____j |= x[____i];\
17 ____j;\
18} while (0)
19
20#define NET_DM_CFG_VERSION 0
21#define NET_DM_CFG_ALERT_COUNT 1
22#define NET_DM_CFG_ALERT_DELAY 2
23#define NET_DM_CFG_MAX 3
24
25struct net_dm_config_entry {
26 __u32 type;
27 __u64 data __attribute__((aligned(8)));
28};
29
30struct net_dm_config_msg {
31 __u32 entries;
32 struct net_dm_config_entry options[0];
33};
34
35struct net_dm_alert_msg {
36 __u32 entries;
37 struct net_dm_drop_point points[0];
38};
39
40struct net_dm_user_msg {
41 union {
42 struct net_dm_config_msg user;
43 struct net_dm_alert_msg alert;
44 } u;
45};
46
47
48/* These are the netlink message types for this protocol */
49
50enum {
51 NET_DM_CMD_UNSPEC = 0,
52 NET_DM_CMD_ALERT,
53 NET_DM_CMD_CONFIG,
54 NET_DM_CMD_START,
55 NET_DM_CMD_STOP,
56 NET_DM_CMD_PACKET_ALERT,
57 NET_DM_CMD_CONFIG_GET,
58 NET_DM_CMD_CONFIG_NEW,
59 NET_DM_CMD_STATS_GET,
60 NET_DM_CMD_STATS_NEW,
61 _NET_DM_CMD_MAX,
62};
63
64#define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1)
65
66/*
67 * Our group identifiers
68 */
69#define NET_DM_GRP_ALERT 1
70
71enum net_dm_attr {
72 NET_DM_ATTR_UNSPEC,
73
74 NET_DM_ATTR_ALERT_MODE, /* u8 */
75 NET_DM_ATTR_PC, /* u64 */
76 NET_DM_ATTR_SYMBOL, /* string */
77 NET_DM_ATTR_IN_PORT, /* nested */
78 NET_DM_ATTR_TIMESTAMP, /* u64 */
79 NET_DM_ATTR_PROTO, /* u16 */
80 NET_DM_ATTR_PAYLOAD, /* binary */
81 NET_DM_ATTR_PAD,
82 NET_DM_ATTR_TRUNC_LEN, /* u32 */
83 NET_DM_ATTR_ORIG_LEN, /* u32 */
84 NET_DM_ATTR_QUEUE_LEN, /* u32 */
85 NET_DM_ATTR_STATS, /* nested */
86 NET_DM_ATTR_HW_STATS, /* nested */
87 NET_DM_ATTR_ORIGIN, /* u16 */
88 NET_DM_ATTR_HW_TRAP_GROUP_NAME, /* string */
89 NET_DM_ATTR_HW_TRAP_NAME, /* string */
90 NET_DM_ATTR_HW_ENTRIES, /* nested */
91 NET_DM_ATTR_HW_ENTRY, /* nested */
92 NET_DM_ATTR_HW_TRAP_COUNT, /* u32 */
93 NET_DM_ATTR_SW_DROPS, /* flag */
94 NET_DM_ATTR_HW_DROPS, /* flag */
95
96 __NET_DM_ATTR_MAX,
97 NET_DM_ATTR_MAX = __NET_DM_ATTR_MAX - 1
98};
99
100/**
101 * enum net_dm_alert_mode - Alert mode.
102 * @NET_DM_ALERT_MODE_SUMMARY: A summary of recent drops is sent to user space.
103 * @NET_DM_ALERT_MODE_PACKET: Each dropped packet is sent to user space along
104 * with metadata.
105 */
106enum net_dm_alert_mode {
107 NET_DM_ALERT_MODE_SUMMARY,
108 NET_DM_ALERT_MODE_PACKET,
109};
110
111enum {
112 NET_DM_ATTR_PORT_NETDEV_IFINDEX, /* u32 */
113 NET_DM_ATTR_PORT_NETDEV_NAME, /* string */
114
115 __NET_DM_ATTR_PORT_MAX,
116 NET_DM_ATTR_PORT_MAX = __NET_DM_ATTR_PORT_MAX - 1
117};
118
119enum {
120 NET_DM_ATTR_STATS_DROPPED, /* u64 */
121
122 __NET_DM_ATTR_STATS_MAX,
123 NET_DM_ATTR_STATS_MAX = __NET_DM_ATTR_STATS_MAX - 1
124};
125
126enum net_dm_origin {
127 NET_DM_ORIGIN_SW,
128 NET_DM_ORIGIN_HW,
129};
130
131#endif