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Make flags more efficient. 

Add 'raw' net_addr facility (needed for ARP).
This commit is contained in:
Michael Brown 2006-04-19 01:53:49 +00:00
parent 49f933fbc3
commit 744b895077
1 changed files with 15 additions and 8 deletions
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23
src/include/gpxe/llh.h
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@ -18,6 +18,12 @@
/** Maximum length of a network-layer address */
#define MAX_NET_ADDR_LEN 4
/* Network-layer address may be required to contain a raw link-layer address */
#if MAX_NET_ADDR_LEN < MAX_LLH_ADDR_LEN
#undef MAX_NET_ADDR_LEN
#define MAX_NET_ADDR_LEN MAX_LLH_ADDR_LEN
#endif
/** A media-independent link-layer header
*
* This structure represents a generic link-layer header. It never
@ -31,16 +37,12 @@ struct gpxehdr {
* ETH_P_XXX constant, in network-byte order.
*/
uint16_t net_proto;
/** Broadcast flag
/** Flags
*
* Filled in only on outgoing packets.
* Filled in only on outgoing packets. Value is the
* bitwise-OR of zero or more GPXE_FL_XXX constants.
*/
int broadcast : 1;
/** Multicast flag
*
* Filled in only on outgoing packets.
*/
int multicast : 1;
uint8_t flags;
/** Network-layer address length
*
* Filled in only on outgoing packets.
@ -53,4 +55,9 @@ struct gpxehdr {
uint8_t net_addr[MAX_NET_ADDR_LEN];
} __attribute__ (( packed ));
/* Media-independent link-layer header flags */
#define GPXE_FL_BROADCAST 0x01
#define GPXE_FL_MULTICAST 0x02
#define GPXE_FL_RAW 0x04
#endif /* _LLH_H */