1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI__LINUX_BRIDGE_EBT_802_3_H
3 #define _UAPI__LINUX_BRIDGE_EBT_802_3_H
4 
5 #include <linux/types.h>
6 #include <linux/if_ether.h>
7 
8 #define EBT_802_3_SAP 0x01
9 #define EBT_802_3_TYPE 0x02
10 
11 #define EBT_802_3_MATCH "802_3"
12 
13 /*
14  * If frame has DSAP/SSAP value 0xaa you must check the SNAP type
15  * to discover what kind of packet we're carrying.
16  */
17 #define CHECK_TYPE 0xaa
18 
19 /*
20  * Control field may be one or two bytes.  If the first byte has
21  * the value 0x03 then the entire length is one byte, otherwise it is two.
22  * One byte controls are used in Unnumbered Information frames.
23  * Two byte controls are used in Numbered Information frames.
24  */
25 #define IS_UI 0x03
26 
27 #define EBT_802_3_MASK (EBT_802_3_SAP | EBT_802_3_TYPE | EBT_802_3)
28 
29 /* ui has one byte ctrl, ni has two */
30 struct hdr_ui {
31 	__u8 dsap;
32 	__u8 ssap;
33 	__u8 ctrl;
34 	__u8 orig[3];
35 	__be16 type;
36 };
37 
38 struct hdr_ni {
39 	__u8 dsap;
40 	__u8 ssap;
41 	__be16 ctrl;
42 	__u8  orig[3];
43 	__be16 type;
44 };
45 
46 struct ebt_802_3_hdr {
47 	__u8  daddr[ETH_ALEN];
48 	__u8  saddr[ETH_ALEN];
49 	__be16 len;
50 	union {
51 		struct hdr_ui ui;
52 		struct hdr_ni ni;
53 	} llc;
54 };
55 
56 
57 struct ebt_802_3_info {
58 	__u8  sap;
59 	__be16 type;
60 	__u8  bitmask;
61 	__u8  invflags;
62 };
63 
64 #endif /* _UAPI__LINUX_BRIDGE_EBT_802_3_H */
65