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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _LINUX_ATMBR2684_H3#define _LINUX_ATMBR2684_H4 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 only11 * ethernet is supported12 */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 rest53 * is per-backend specific54 */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 a64 * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name65 */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 rest80 * is per-backend specific81 */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 folks97 * terminating a large number of IP-only vcc's. When netfilter allows98 * efficient per-if in/out filters, this support will be removed99 */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