Make flags more efficient.
Add 'raw' net_addr facility (needed for ARP).
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@ -18,6 +18,12 @@
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/** Maximum length of a network-layer address */
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/** Maximum length of a network-layer address */
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#define MAX_NET_ADDR_LEN 4
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#define MAX_NET_ADDR_LEN 4
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/* Network-layer address may be required to contain a raw link-layer address */
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#if MAX_NET_ADDR_LEN < MAX_LLH_ADDR_LEN
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#undef MAX_NET_ADDR_LEN
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#define MAX_NET_ADDR_LEN MAX_LLH_ADDR_LEN
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#endif
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/** A media-independent link-layer header
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/** A media-independent link-layer header
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*
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*
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* This structure represents a generic link-layer header. It never
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* This structure represents a generic link-layer header. It never
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@ -31,16 +37,12 @@ struct gpxehdr {
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* ETH_P_XXX constant, in network-byte order.
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* ETH_P_XXX constant, in network-byte order.
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*/
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*/
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uint16_t net_proto;
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uint16_t net_proto;
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/** Broadcast flag
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/** Flags
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*
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*
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* Filled in only on outgoing packets.
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* Filled in only on outgoing packets. Value is the
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* bitwise-OR of zero or more GPXE_FL_XXX constants.
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*/
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*/
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int broadcast : 1;
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uint8_t flags;
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/** Multicast flag
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*
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* Filled in only on outgoing packets.
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*/
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int multicast : 1;
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/** Network-layer address length
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/** Network-layer address length
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*
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*
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* Filled in only on outgoing packets.
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* Filled in only on outgoing packets.
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@ -53,4 +55,9 @@ struct gpxehdr {
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uint8_t net_addr[MAX_NET_ADDR_LEN];
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uint8_t net_addr[MAX_NET_ADDR_LEN];
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} __attribute__ (( packed ));
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} __attribute__ (( packed ));
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/* Media-independent link-layer header flags */
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#define GPXE_FL_BROADCAST 0x01
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#define GPXE_FL_MULTICAST 0x02
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#define GPXE_FL_RAW 0x04
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#endif /* _LLH_H */
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#endif /* _LLH_H */
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