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
8 struct 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
25 struct net_dm_config_entry {
26 __u32 type;
27 __u64 data __attribute__((aligned(8)));
28 };
29
30 struct net_dm_config_msg {
31 __u32 entries;
32 struct net_dm_config_entry options[];
33 };
34
35 struct net_dm_alert_msg {
36 __u32 entries;
37 struct net_dm_drop_point points[];
38 };
39
40 struct 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
50 enum {
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
71 enum 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 NET_DM_ATTR_FLOW_ACTION_COOKIE, /* binary */
96 NET_DM_ATTR_REASON, /* string */
97
98 __NET_DM_ATTR_MAX,
99 NET_DM_ATTR_MAX = __NET_DM_ATTR_MAX - 1
100 };
101
102 /**
103 * enum net_dm_alert_mode - Alert mode.
104 * @NET_DM_ALERT_MODE_SUMMARY: A summary of recent drops is sent to user space.
105 * @NET_DM_ALERT_MODE_PACKET: Each dropped packet is sent to user space along
106 * with metadata.
107 */
108 enum net_dm_alert_mode {
109 NET_DM_ALERT_MODE_SUMMARY,
110 NET_DM_ALERT_MODE_PACKET,
111 };
112
113 enum {
114 NET_DM_ATTR_PORT_NETDEV_IFINDEX, /* u32 */
115 NET_DM_ATTR_PORT_NETDEV_NAME, /* string */
116
117 __NET_DM_ATTR_PORT_MAX,
118 NET_DM_ATTR_PORT_MAX = __NET_DM_ATTR_PORT_MAX - 1
119 };
120
121 enum {
122 NET_DM_ATTR_STATS_DROPPED, /* u64 */
123
124 __NET_DM_ATTR_STATS_MAX,
125 NET_DM_ATTR_STATS_MAX = __NET_DM_ATTR_STATS_MAX - 1
126 };
127
128 enum net_dm_origin {
129 NET_DM_ORIGIN_SW,
130 NET_DM_ORIGIN_HW,
131 };
132
133 #endif
134
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