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[0]; 33 }; 34 35 struct net_dm_alert_msg { 36 __u32 entries; 37 struct net_dm_drop_point points[0]; 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_MAX, 58 }; 59 60 #define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1) 61 62 /* 63 * Our group identifiers 64 */ 65 #define NET_DM_GRP_ALERT 1 66 67 enum net_dm_attr { 68 NET_DM_ATTR_UNSPEC, 69 70 NET_DM_ATTR_ALERT_MODE, /* u8 */ 71 NET_DM_ATTR_PC, /* u64 */ 72 NET_DM_ATTR_SYMBOL, /* string */ 73 NET_DM_ATTR_IN_PORT, /* nested */ 74 NET_DM_ATTR_TIMESTAMP, /* struct timespec */ 75 NET_DM_ATTR_PROTO, /* u16 */ 76 NET_DM_ATTR_PAYLOAD, /* binary */ 77 NET_DM_ATTR_PAD, 78 79 __NET_DM_ATTR_MAX, 80 NET_DM_ATTR_MAX = __NET_DM_ATTR_MAX - 1 81 }; 82 83 /** 84 * enum net_dm_alert_mode - Alert mode. 85 * @NET_DM_ALERT_MODE_SUMMARY: A summary of recent drops is sent to user space. 86 * @NET_DM_ALERT_MODE_PACKET: Each dropped packet is sent to user space along 87 * with metadata. 88 */ 89 enum net_dm_alert_mode { 90 NET_DM_ALERT_MODE_SUMMARY, 91 NET_DM_ALERT_MODE_PACKET, 92 }; 93 94 enum { 95 NET_DM_ATTR_PORT_NETDEV_IFINDEX, /* u32 */ 96 97 __NET_DM_ATTR_PORT_MAX, 98 NET_DM_ATTR_PORT_MAX = __NET_DM_ATTR_PORT_MAX - 1 99 }; 100 101 #endif 102