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1/* $OpenBSD: ip_ether.h,v 1.30 2019/10/04 05:00:49 dlg Exp $ */
2/*
3 * The author of this code is Angelos D. Keromytis (angelos@adk.gr)
4 *
5 * This code was written by Angelos D. Keromytis in October 1999.
6 *
7 * Copyright (C) 1999-2001 Angelos D. Keromytis.
8 *
9 * Permission to use, copy, and modify this software with or without fee
10 * is hereby granted, provided that this entire notice is included in
11 * all copies of any software which is or includes a copy or
12 * modification of this software.
13 * You may use this code under the GNU public license if you so wish. Please
14 * contribute changes back to the authors under this freer than GPL license
15 * so that we may further the use of strong encryption without limitations to
16 * all.
17 *
18 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
19 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
20 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
21 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
22 * PURPOSE.
23 */
24
25#ifndef _NETINET_IP_ETHER_H_
26#define _NETINET_IP_ETHER_H_
27
28/*
29 * Ethernet-inside-IP processing.
30 */
31
32struct etheripstat {
33 u_int64_t etherips_hdrops; /* packet shorter than header shows */
34 u_int64_t etherips_qfull; /* bridge queue full, packet dropped */
35 u_int64_t etherips_noifdrops; /* no interface/bridge information */
36 u_int64_t etherips_pdrops; /* packet dropped due to policy */
37 u_int64_t etherips_adrops; /* all other drops */
38 u_int64_t etherips_ipackets; /* total input packets */
39 u_int64_t etherips_opackets; /* total output packets */
40 u_int64_t etherips_ibytes; /* input bytes */
41 u_int64_t etherips_obytes; /* output bytes */
42};
43
44struct etherip_header {
45#if BYTE_ORDER == LITTLE_ENDIAN
46 u_int eip_res:4; /* reserved */
47 u_int eip_ver:4; /* version */
48#endif
49#if BYTE_ORDER == BIG_ENDIAN
50 u_int eip_ver:4; /* version */
51 u_int eip_res:4; /* reserved */
52#endif
53 u_int8_t eip_pad; /* required padding byte */
54} __packed;
55
56#define ETHERIP_VERSION 0x03
57
58/*
59 * Names for Ether-IP sysctl objects
60 */
61#define ETHERIPCTL_ALLOW 1 /* accept incoming EtherIP packets */
62#define ETHERIPCTL_STATS 2 /* etherip stats */
63#define ETHERIPCTL_MAXID 3
64
65#define ETHERIPCTL_NAMES { \
66 { 0, 0 }, \
67 { "allow", CTLTYPE_INT }, \
68 { "stats", CTLTYPE_STRUCT }, \
69}
70
71#ifdef _KERNEL
72
73#include <sys/percpu.h>
74
75enum etheripstat_counters {
76 etherips_hdrops, /* packet shorter than header shows */
77 etherips_qfull, /* bridge queue full, packet dropped */
78 etherips_noifdrops, /* no interface/bridge information */
79 etherips_pdrops, /* packet dropped due to policy */
80 etherips_adrops, /* all other drops */
81 etherips_ipackets, /* total input packets */
82 etherips_opackets, /* total output packets */
83 etherips_ibytes, /* input bytes */
84 etherips_obytes, /* output bytes */
85
86 etherips_ncounters
87};
88
89extern struct cpumem *etheripcounters;
90
91static inline void
92etheripstat_inc(enum etheripstat_counters c)
93{
94 counters_inc(etheripcounters, c);
95}
96
97static inline void
98etheripstat_add(enum etheripstat_counters c, uint64_t v)
99{
100 counters_add(etheripcounters, c, v);
101}
102
103static inline void
104etheripstat_pkt(enum etheripstat_counters pcounter,
105 enum etheripstat_counters bcounter, uint64_t v)
106{
107 counters_pkt(etheripcounters, pcounter, bcounter, v);
108}
109
110#endif /* _KERNEL */
111#endif /* _NETINET_IP_ETHER_H_ */