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  */
54 struct 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)
68 struct 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  */
81 struct 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  */
99 struct br2684_filter {
100 	__be32 prefix;		/* network byte order */
101 	__be32 netmask;		/* 0 = disable filter */
102 };
103 
104 struct br2684_filter_set {
105 	struct br2684_if_spec ifspec;
106 	struct br2684_filter filter;
107 };
108 
109 enum 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