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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_ATMBR2684_H
#define _LINUX_ATMBR2684_H
#include <linux/types.h>
#include <linux/atm.h>
#include <linux/if.h> /* For IFNAMSIZ */
/*
* Type of media we're bridging (ethernet, token ring, etc) Currently only
* ethernet is supported
*/
#define BR2684_MEDIA_ETHERNET (0) /* 802.3 */
#define BR2684_MEDIA_802_4 (1) /* 802.4 */
#define BR2684_MEDIA_TR (2) /* 802.5 - token ring */
#define BR2684_MEDIA_FDDI (3)
#define BR2684_MEDIA_802_6 (4) /* 802.6 */
/* used only at device creation: */
#define BR2684_FLAG_ROUTED (1<<16) /* payload is routed, not bridged */
/*
* Is there FCS inbound on this VC? This currently isn't supported.
*/
#define BR2684_FCSIN_NO (0)
#define BR2684_FCSIN_IGNORE (1)
#define BR2684_FCSIN_VERIFY (2)
/*
* Is there FCS outbound on this VC? This currently isn't supported.
*/
#define BR2684_FCSOUT_NO (0)
#define BR2684_FCSOUT_SENDZERO (1)
#define BR2684_FCSOUT_GENERATE (2)
/*
* Does this VC include LLC encapsulation?
*/
#define BR2684_ENCAPS_VC (0) /* VC-mux */
#define BR2684_ENCAPS_LLC (1)
#define BR2684_ENCAPS_AUTODETECT (2) /* Unsuported */
/*
* Is this VC bridged or routed?
*/
#define BR2684_PAYLOAD_ROUTED (0)
#define BR2684_PAYLOAD_BRIDGED (1)
/*
* This is for the ATM_NEWBACKENDIF call - these are like socket families:
* the first element of the structure is the backend number and the rest
* is per-backend specific
*/
struct atm_newif_br2684 {
atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */
int media; /* BR2684_MEDIA_*, flags in upper bits */
char ifname[IFNAMSIZ];
int mtu;
};
/*
* This structure is used to specify a br2684 interface - either by a
* positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name
*/
#define BR2684_FIND_BYNOTHING (0)
#define BR2684_FIND_BYNUM (1)
#define BR2684_FIND_BYIFNAME (2)
struct br2684_if_spec {
int method; /* BR2684_FIND_* */
union {
char ifname[IFNAMSIZ];
int devnum;
} spec;
};
/*
* This is for the ATM_SETBACKEND call - these are like socket families:
* the first element of the structure is the backend number and the rest
* is per-backend specific
*/
struct atm_backend_br2684 {
atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */
struct br2684_if_spec ifspec;
int fcs_in; /* BR2684_FCSIN_* */
int fcs_out; /* BR2684_FCSOUT_* */
int fcs_auto; /* 1: fcs_{in,out} disabled if no FCS rx'ed */
int encaps; /* BR2684_ENCAPS_* */
int has_vpiid; /* 1: use vpn_id - Unsupported */
__u8 vpn_id[7];
int send_padding; /* unsupported */
int min_size; /* we will pad smaller packets than this */
};
/*
* The BR2684_SETFILT ioctl is an experimental mechanism for folks
* terminating a large number of IP-only vcc's. When netfilter allows
* efficient per-if in/out filters, this support will be removed
*/
struct br2684_filter {
__be32 prefix; /* network byte order */
__be32 netmask; /* 0 = disable filter */
};
struct br2684_filter_set {
struct br2684_if_spec ifspec;
struct br2684_filter filter;
};
enum br2684_payload {
p_routed = BR2684_PAYLOAD_ROUTED,
p_bridged = BR2684_PAYLOAD_BRIDGED,
};
#define BR2684_SETFILT _IOW( 'a', ATMIOC_BACKEND + 0, \
struct br2684_filter_set)
#endif /* _LINUX_ATMBR2684_H */