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)    /* Unsupported */
  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  */
  55 struct 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)
  69 struct 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  */
  82 struct 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  */
 100 struct br2684_filter {
 101         __be32 prefix;          /* network byte order */
 102         __be32 netmask;         /* 0 = disable filter */
 103 };
 104
 105 struct br2684_filter_set {
 106         struct br2684_if_spec ifspec;
 107         struct br2684_filter filter;
 108 };
 109
 110 enum 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 */