/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef _LINUX_ATMBR2684_H

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#define _LINUX_ATMBR2684_H

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#include <linux/types.h>

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#include <linux/atm.h>

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#include <linux/if.h> /* For IFNAMSIZ */

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/*

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* Type of media we're bridging (ethernet, token ring, etc) Currently only

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* ethernet is supported

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*/

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#define BR2684_MEDIA_ETHERNET (0) /* 802.3 */

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#define BR2684_MEDIA_802_4 (1) /* 802.4 */

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#define BR2684_MEDIA_TR (2) /* 802.5 - token ring */

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#define BR2684_MEDIA_FDDI (3)

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#define BR2684_MEDIA_802_6 (4) /* 802.6 */

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/* used only at device creation: */

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#define BR2684_FLAG_ROUTED (1<<16) /* payload is routed, not bridged */

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/*

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* Is there FCS inbound on this VC? This currently isn't supported.

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*/

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#define BR2684_FCSIN_NO (0)

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#define BR2684_FCSIN_IGNORE (1)

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#define BR2684_FCSIN_VERIFY (2)

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/*

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* Is there FCS outbound on this VC? This currently isn't supported.

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*/

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#define BR2684_FCSOUT_NO (0)

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#define BR2684_FCSOUT_SENDZERO (1)

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#define BR2684_FCSOUT_GENERATE (2)

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/*

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* Does this VC include LLC encapsulation?

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*/

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#define BR2684_ENCAPS_VC (0) /* VC-mux */

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#define BR2684_ENCAPS_LLC (1)

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#define BR2684_ENCAPS_AUTODETECT (2) /* Unsuported */

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/*

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* Is this VC bridged or routed?

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*/

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#define BR2684_PAYLOAD_ROUTED (0)

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#define BR2684_PAYLOAD_BRIDGED (1)

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/*

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* This is for the ATM_NEWBACKENDIF call - these are like socket families:

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* the first element of the structure is the backend number and the rest

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* is per-backend specific

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*/

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struct atm_newif_br2684 {

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atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */

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int media; /* BR2684_MEDIA_*, flags in upper bits */

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char ifname[IFNAMSIZ];

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int mtu;

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};

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/*

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* This structure is used to specify a br2684 interface - either by a

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* positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name

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*/

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#define BR2684_FIND_BYNOTHING (0)

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#define BR2684_FIND_BYNUM (1)

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#define BR2684_FIND_BYIFNAME (2)

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struct br2684_if_spec {

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int method; /* BR2684_FIND_* */

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union {

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char ifname[IFNAMSIZ];

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int devnum;

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} spec;

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};

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/*

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* This is for the ATM_SETBACKEND call - these are like socket families:

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* the first element of the structure is the backend number and the rest

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* is per-backend specific

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*/

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struct atm_backend_br2684 {

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atm_backend_t backend_num; /* ATM_BACKEND_BR2684 */

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struct br2684_if_spec ifspec;

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int fcs_in; /* BR2684_FCSIN_* */

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int fcs_out; /* BR2684_FCSOUT_* */

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int fcs_auto; /* 1: fcs_{in,out} disabled if no FCS rx'ed */

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int encaps; /* BR2684_ENCAPS_* */

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int has_vpiid; /* 1: use vpn_id - Unsupported */

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__u8 vpn_id[7];

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int send_padding; /* unsupported */

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int min_size; /* we will pad smaller packets than this */

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};

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/*

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* The BR2684_SETFILT ioctl is an experimental mechanism for folks

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* terminating a large number of IP-only vcc's. When netfilter allows

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* efficient per-if in/out filters, this support will be removed

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*/

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struct br2684_filter {

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__be32 prefix; /* network byte order */

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__be32 netmask; /* 0 = disable filter */

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};

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struct br2684_filter_set {

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struct br2684_if_spec ifspec;

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struct br2684_filter filter;

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};

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enum br2684_payload {

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p_routed = BR2684_PAYLOAD_ROUTED,

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p_bridged = BR2684_PAYLOAD_BRIDGED,

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};

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#define BR2684_SETFILT _IOW( 'a', ATMIOC_BACKEND + 0, \

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struct br2684_filter_set)

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#endif /* _LINUX_ATMBR2684_H */

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