linux/include/linux/atmbr2684.h
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   1#ifndef _LINUX_ATMBR2684_H
   2#define _LINUX_ATMBR2684_H
   3
   4#include <linux/types.h>
   5#include <linux/atm.h>
   6#include <linux/if.h>           /* For IFNAMSIZ */
   7
   8/*
   9 * Type of media we're bridging (ethernet, token ring, etc)  Currently only
  10 * ethernet is supported
  11 */
  12#define BR2684_MEDIA_ETHERNET   (0)     /* 802.3 */
  13#define BR2684_MEDIA_802_4      (1)     /* 802.4 */
  14#define BR2684_MEDIA_TR         (2)     /* 802.5 - token ring */
  15#define BR2684_MEDIA_FDDI       (3)
  16#define BR2684_MEDIA_802_6      (4)     /* 802.6 */
  17
  18                                        /* used only at device creation:  */
  19#define BR2684_FLAG_ROUTED      (1<<16) /* payload is routed, not bridged */
  20
  21/*
  22 * Is there FCS inbound on this VC?  This currently isn't supported.
  23 */
  24#define BR2684_FCSIN_NO         (0)
  25#define BR2684_FCSIN_IGNORE     (1)
  26#define BR2684_FCSIN_VERIFY     (2)
  27
  28/*
  29 * Is there FCS outbound on this VC?  This currently isn't supported.
  30 */
  31#define BR2684_FCSOUT_NO        (0)
  32#define BR2684_FCSOUT_SENDZERO  (1)
  33#define BR2684_FCSOUT_GENERATE  (2)
  34
  35/*
  36 * Does this VC include LLC encapsulation?
  37 */
  38#define BR2684_ENCAPS_VC        (0)     /* VC-mux */
  39#define BR2684_ENCAPS_LLC       (1)
  40#define BR2684_ENCAPS_AUTODETECT (2)    /* Unsuported */
  41
  42/*
  43 * Is this VC bridged or routed?
  44 */
  45
  46#define BR2684_PAYLOAD_ROUTED   (0)
  47#define BR2684_PAYLOAD_BRIDGED  (1)
  48
  49/*
  50 * This is for the ATM_NEWBACKENDIF call - these are like socket families:
  51 * the first element of the structure is the backend number and the rest
  52 * is per-backend specific
  53 */
  54struct atm_newif_br2684 {
  55        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
  56        int media;              /* BR2684_MEDIA_*, flags in upper bits */
  57        char ifname[IFNAMSIZ];
  58        int mtu;
  59};
  60
  61/*
  62 * This structure is used to specify a br2684 interface - either by a
  63 * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name
  64 */
  65#define BR2684_FIND_BYNOTHING   (0)
  66#define BR2684_FIND_BYNUM       (1)
  67#define BR2684_FIND_BYIFNAME    (2)
  68struct br2684_if_spec {
  69        int method;             /* BR2684_FIND_* */
  70        union {
  71                char ifname[IFNAMSIZ];
  72                int devnum;
  73        } spec;
  74};
  75
  76/*
  77 * This is for the ATM_SETBACKEND call - these are like socket families:
  78 * the first element of the structure is the backend number and the rest
  79 * is per-backend specific
  80 */
  81struct atm_backend_br2684 {
  82        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
  83        struct br2684_if_spec ifspec;
  84        int fcs_in;             /* BR2684_FCSIN_* */
  85        int fcs_out;            /* BR2684_FCSOUT_* */
  86        int fcs_auto;           /* 1: fcs_{in,out} disabled if no FCS rx'ed */
  87        int encaps;             /* BR2684_ENCAPS_* */
  88        int has_vpiid;          /* 1: use vpn_id - Unsupported */
  89        __u8 vpn_id[7];
  90        int send_padding;       /* unsupported */
  91        int min_size;           /* we will pad smaller packets than this */
  92};
  93
  94/*
  95 * The BR2684_SETFILT ioctl is an experimental mechanism for folks
  96 * terminating a large number of IP-only vcc's.  When netfilter allows
  97 * efficient per-if in/out filters, this support will be removed
  98 */
  99struct br2684_filter {
 100        __be32 prefix;          /* network byte order */
 101        __be32 netmask;         /* 0 = disable filter */
 102};
 103
 104struct br2684_filter_set {
 105        struct br2684_if_spec ifspec;
 106        struct br2684_filter filter;
 107};
 108
 109enum br2684_payload {
 110        p_routed = BR2684_PAYLOAD_ROUTED,
 111        p_bridged = BR2684_PAYLOAD_BRIDGED,
 112};
 113
 114#define BR2684_SETFILT  _IOW( 'a', ATMIOC_BACKEND + 0, \
 115                                struct br2684_filter_set)
 116
 117#endif /* _LINUX_ATMBR2684_H */
 118
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