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#ifndef __LINUX_BRIDGE_EBT_802_3_H
#define __LINUX_BRIDGE_EBT_802_3_H
#define EBT_802_3_SAP 0x01
#define EBT_802_3_TYPE 0x02
#define EBT_802_3_MATCH "802_3"
/*
* If frame has DSAP/SSAP value 0xaa you must check the SNAP type
* to discover what kind of packet we're carrying.
*/
#define CHECK_TYPE 0xaa
/*
* Control field may be one or two bytes. If the first byte has
* the value 0x03 then the entire length is one byte, otherwise it is two.
* One byte controls are used in Unnumbered Information frames.
* Two byte controls are used in Numbered Information frames.
*/
#define IS_UI 0x03
#define EBT_802_3_MASK (EBT_802_3_SAP | EBT_802_3_TYPE | EBT_802_3)
/* ui has one byte ctrl, ni has two */
struct hdr_ui {
uint8_t dsap;
uint8_t ssap;
uint8_t ctrl;
uint8_t orig[3];
__be16 type;
};
struct hdr_ni {
uint8_t dsap;
uint8_t ssap;
__be16 ctrl;
uint8_t orig[3];
__be16 type;
};
struct ebt_802_3_hdr {
uint8_t daddr[6];
uint8_t saddr[6];
__be16 len;
union {
struct hdr_ui ui;
struct hdr_ni ni;
} llc;
};
#ifdef __KERNEL__
#include <linux/skbuff.h>
static inline struct ebt_802_3_hdr *ebt_802_3_hdr(const struct sk_buff *skb)
{
return (struct ebt_802_3_hdr *)skb->mac.raw;
}
#endif
struct ebt_802_3_info
{
uint8_t sap;
__be16 type;
uint8_t bitmask;
uint8_t invflags;
};
#endif
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