Line data    Source code

       1             : /*      $OpenBSD: ip_ether.h,v 1.28 2017/11/17 18:21:33 jca 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             : 
      32             : struct 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             : 
      44             : struct 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             : 
      75             : enum 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             : 
      89             : extern struct cpumem *etheripcounters;
      90             : 
      91             : static inline void
      92           0 : etheripstat_inc(enum etheripstat_counters c)
      93             : {
      94           0 :         counters_inc(etheripcounters, c);
      95           0 : }
      96             : 
      97             : static inline void
      98             : etheripstat_add(enum etheripstat_counters c, uint64_t v)
      99             : {
     100             :         counters_add(etheripcounters, c, v);
     101             : }
     102             : 
     103             : static inline void
     104           0 : etheripstat_pkt(enum etheripstat_counters pcounter,
     105             :     enum etheripstat_counters bcounter, uint64_t v)
     106             : {
     107           0 :         counters_pkt(etheripcounters, pcounter, bcounter, v);
     108           0 : }
     109             : 
     110             : struct tdb;     /* XXX within #ifdef MPLS? */
     111             : 
     112             : #ifdef MPLS
     113             : int     mplsip_output(struct mbuf *, struct tdb *, struct mbuf **, int);
     114             : int     mplsip_input(struct mbuf **, int *, int, int);
     115             : #endif /* MPLS */
     116             : 
     117             : #endif /* _KERNEL */
     118             : #endif /* _NETINET_IP_ETHER_H_ */