1#ifndef __LINUX_BRIDGE_EBT_802_3_H 2#define __LINUX_BRIDGE_EBT_802_3_H 3 4#define EBT_802_3_SAP 0x01 5#define EBT_802_3_TYPE 0x02 6 7#define EBT_802_3_MATCH "802_3" 8 9/* 10 * If frame has DSAP/SSAP value 0xaa you must check the SNAP type 11 * to discover what kind of packet we're carrying. 12 */ 13#define CHECK_TYPE 0xaa 14 15/* 16 * Control field may be one or two bytes. If the first byte has 17 * the value 0x03 then the entire length is one byte, otherwise it is two. 18 * One byte controls are used in Unnumbered Information frames. 19 * Two byte controls are used in Numbered Information frames. 20 */ 21#define IS_UI 0x03 22 23#define EBT_802_3_MASK (EBT_802_3_SAP | EBT_802_3_TYPE | EBT_802_3) 24 25/* ui has one byte ctrl, ni has two */ 26struct hdr_ui { 27 uint8_t dsap; 28 uint8_t ssap; 29 uint8_t ctrl; 30 uint8_t orig[3]; 31 __be16 type; 32}; 33 34struct hdr_ni { 35 uint8_t dsap; 36 uint8_t ssap; 37 __be16 ctrl; 38 uint8_t orig[3]; 39 __be16 type; 40}; 41 42struct ebt_802_3_hdr { 43 uint8_t daddr[6]; 44 uint8_t saddr[6]; 45 __be16 len; 46 union { 47 struct hdr_ui ui; 48 struct hdr_ni ni; 49 } llc; 50}; 51 52 53struct ebt_802_3_info { 54 uint8_t sap; 55 __be16 type; 56 uint8_t bitmask; 57 uint8_t invflags; 58}; 59 60#endif 61