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