1 files changed, 100 insertions, 0 deletions
diff --git a/roms/ipxe/src/include/ipxe/ethernet.h b/roms/ipxe/src/include/ipxe/ethernet.h
new file mode 100644
index 000000000..dd04e00ce
--- /dev/null
+++ b/roms/ipxe/src/include/ipxe/ethernet.h
@@ -0,0 +1,100 @@
+#ifndef _IPXE_ETHERNET_H
+#define _IPXE_ETHERNET_H
+
+/** @file
+ *
+ * Ethernet protocol
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/iobuf.h>
+
+/**
+ * Check if Ethernet address is all zeroes
+ *
+ * @v addr		Ethernet address
+ * @ret is_zero		Address is all zeroes
+ */
+static inline int is_zero_ether_addr ( const void *addr ) {
+	const uint8_t *addr_bytes = addr;
+
+	return ( ! ( addr_bytes[0] | addr_bytes[1] | addr_bytes[2] |
+		     addr_bytes[3] | addr_bytes[4] | addr_bytes[5] ) );
+}
+
+/**
+ * Check if Ethernet address is a multicast address
+ *
+ * @v addr		Ethernet address
+ * @ret is_mcast	Address is a multicast address
+ *
+ * Note that the broadcast address is also a multicast address.
+ */
+static inline int is_multicast_ether_addr ( const void *addr ) {
+	const uint8_t *addr_bytes = addr;
+
+	return ( addr_bytes[0] & 0x01 );
+}
+
+/**
+ * Check if Ethernet address is locally assigned
+ *
+ * @v addr		Ethernet address
+ * @ret is_local	Address is locally assigned
+ */
+static inline int is_local_ether_addr ( const void *addr ) {
+	const uint8_t *addr_bytes = addr;
+
+	return ( addr_bytes[0] & 0x02 );
+}
+
+/**
+ * Check if Ethernet address is the broadcast address
+ *
+ * @v addr		Ethernet address
+ * @ret is_bcast	Address is the broadcast address
+ */
+static inline int is_broadcast_ether_addr ( const void *addr ) {
+	const uint8_t *addr_bytes = addr;
+
+	return ( ( addr_bytes[0] & addr_bytes[1] & addr_bytes[2] &
+		   addr_bytes[3] & addr_bytes[4] & addr_bytes[5] ) == 0xff );
+}
+
+/**
+ * Check if Ethernet address is valid
+ *
+ * @v addr		Ethernet address
+ * @ret is_valid	Address is valid
+ *
+ * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is
+ * not a multicast address, and is not ff:ff:ff:ff:ff:ff.
+ */
+static inline int is_valid_ether_addr ( const void *addr ) {
+	return ( ( ! is_multicast_ether_addr ( addr ) ) &&
+		 ( ! is_zero_ether_addr ( addr ) ) );
+}
+
+extern uint8_t eth_broadcast[];
+extern struct ll_protocol ethernet_protocol __ll_protocol;
+
+extern int eth_push ( struct net_device *netdev, struct io_buffer *iobuf,
+		      const void *ll_dest, const void *ll_source,
+		      uint16_t net_proto );
+extern int eth_pull ( struct net_device *netdev, struct io_buffer *iobuf,
+		      const void **ll_dest, const void **ll_source,
+		      uint16_t *net_proto, unsigned int *flags );
+extern void eth_init_addr ( const void *hw_addr, void *ll_addr );
+extern void eth_random_addr ( void *hw_addr );
+extern const char * eth_ntoa ( const void *ll_addr );
+extern int eth_mc_hash ( unsigned int af, const void *net_addr,
+			 void *ll_addr );
+extern int eth_eth_addr ( const void *ll_addr, void *eth_addr );
+extern int eth_eui64 ( const void *ll_addr, void *eui64 );
+extern struct net_device * alloc_etherdev ( size_t priv_size );
+
+#endif /* _IPXE_ETHERNET_H */