LXR linux/include/uapi/linux/atmbr2684.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _LINUX_ATMBR2684_H
   3#define _LINUX_ATMBR2684_H
   4
   5#include <linux/types.h>
   6#include <linux/atm.h>
   7#include <linux/if.h>           /* For IFNAMSIZ */
   8
   9/*
  10 * Type of media we're bridging (ethernet, token ring, etc)  Currently only
  11 * ethernet is supported
  12 */
  13#define BR2684_MEDIA_ETHERNET   (0)     /* 802.3 */
  14#define BR2684_MEDIA_802_4      (1)     /* 802.4 */
  15#define BR2684_MEDIA_TR         (2)     /* 802.5 - token ring */
  16#define BR2684_MEDIA_FDDI       (3)
  17#define BR2684_MEDIA_802_6      (4)     /* 802.6 */
  18
  19                                        /* used only at device creation:  */
  20#define BR2684_FLAG_ROUTED      (1<<16) /* payload is routed, not bridged */
  21
  22/*
  23 * Is there FCS inbound on this VC?  This currently isn't supported.
  24 */
  25#define BR2684_FCSIN_NO         (0)
  26#define BR2684_FCSIN_IGNORE     (1)
  27#define BR2684_FCSIN_VERIFY     (2)
  28
  29/*
  30 * Is there FCS outbound on this VC?  This currently isn't supported.
  31 */
  32#define BR2684_FCSOUT_NO        (0)
  33#define BR2684_FCSOUT_SENDZERO  (1)
  34#define BR2684_FCSOUT_GENERATE  (2)
  35
  36/*
  37 * Does this VC include LLC encapsulation?
  38 */
  39#define BR2684_ENCAPS_VC        (0)     /* VC-mux */
  40#define BR2684_ENCAPS_LLC       (1)
  41#define BR2684_ENCAPS_AUTODETECT (2)    /* Unsuported */
  42
  43/*
  44 * Is this VC bridged or routed?
  45 */
  46
  47#define BR2684_PAYLOAD_ROUTED   (0)
  48#define BR2684_PAYLOAD_BRIDGED  (1)
  49
  50/*
  51 * This is for the ATM_NEWBACKENDIF call - these are like socket families:
  52 * the first element of the structure is the backend number and the rest
  53 * is per-backend specific
  54 */
  55struct atm_newif_br2684 {
  56        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
  57        int media;              /* BR2684_MEDIA_*, flags in upper bits */
  58        char ifname[IFNAMSIZ];
  59        int mtu;
  60};
  61
  62/*
  63 * This structure is used to specify a br2684 interface - either by a
  64 * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name
  65 */
  66#define BR2684_FIND_BYNOTHING   (0)
  67#define BR2684_FIND_BYNUM       (1)
  68#define BR2684_FIND_BYIFNAME    (2)
  69struct br2684_if_spec {
  70        int method;             /* BR2684_FIND_* */
  71        union {
  72                char ifname[IFNAMSIZ];
  73                int devnum;
  74        } spec;
  75};
  76
  77/*
  78 * This is for the ATM_SETBACKEND call - these are like socket families:
  79 * the first element of the structure is the backend number and the rest
  80 * is per-backend specific
  81 */
  82struct atm_backend_br2684 {
  83        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
  84        struct br2684_if_spec ifspec;
  85        int fcs_in;             /* BR2684_FCSIN_* */
  86        int fcs_out;            /* BR2684_FCSOUT_* */
  87        int fcs_auto;           /* 1: fcs_{in,out} disabled if no FCS rx'ed */
  88        int encaps;             /* BR2684_ENCAPS_* */
  89        int has_vpiid;          /* 1: use vpn_id - Unsupported */
  90        __u8 vpn_id[7];
  91        int send_padding;       /* unsupported */
  92        int min_size;           /* we will pad smaller packets than this */
  93};
  94
  95/*
  96 * The BR2684_SETFILT ioctl is an experimental mechanism for folks
  97 * terminating a large number of IP-only vcc's.  When netfilter allows
  98 * efficient per-if in/out filters, this support will be removed
  99 */
 100struct br2684_filter {
 101        __be32 prefix;          /* network byte order */
 102        __be32 netmask;         /* 0 = disable filter */
 103};
 104
 105struct br2684_filter_set {
 106        struct br2684_if_spec ifspec;
 107        struct br2684_filter filter;
 108};
 109
 110enum br2684_payload {
 111        p_routed = BR2684_PAYLOAD_ROUTED,
 112        p_bridged = BR2684_PAYLOAD_BRIDGED,
 113};
 114
 115#define BR2684_SETFILT  _IOW( 'a', ATMIOC_BACKEND + 0, \
 116                                struct br2684_filter_set)
 117
 118#endif /* _LINUX_ATMBR2684_H */
 119