Started IB driver rewrite

src/include/gpxe/errfile.h

@@ -123,6 +123,7 @@
 #define ERRFILE_dhcp			( ERRFILE_NET | 0x00100000 )
 #define ERRFILE_dns			( ERRFILE_NET | 0x00110000 )
 #define ERRFILE_tftp			( ERRFILE_NET | 0x00120000 )
+#define ERRFILE_infiniband		( ERRFILE_NET | 0x00130000 )
 
 #define ERRFILE_image		      ( ERRFILE_IMAGE | 0x00000000 )
 #define ERRFILE_elf		      ( ERRFILE_IMAGE | 0x00010000 )

src/include/gpxe/infiniband.h

@@ -0,0 +1,52 @@
+#ifndef _GPXE_INFINIBAND_H
+#define _GPXE_INFINIBAND_H
+
+/** @file
+ *
+ * Infiniband protocol
+ *
+ */
+
+#include <stdint.h>
+#include <gpxe/netdevice.h>
+
+/** Infiniband hardware address length */
+#define IB_ALEN 20
+#define IB_HLEN 24
+
+/** An Infiniband header
+ *
+ * This data structure doesn't represent the on-wire format, but does
+ * contain all the information required by the driver to construct the
+ * packet.
+ */
+struct ibhdr {
+	/** Peer address */
+	uint8_t peer[IB_ALEN];
+	/** Network-layer protocol */
+	uint16_t proto;
+	/** Reserved, must be zero */
+	uint16_t reserved;
+} __attribute__ (( packed ));
+
+extern struct ll_protocol infiniband_protocol;
+
+extern const char * ib_ntoa ( const void *ll_addr );
+
+/**
+ * Allocate Infiniband device
+ *
+ * @v priv_size		Size of driver private data
+ * @ret netdev		Network device, or NULL
+ */
+static inline struct net_device * alloc_ibdev ( size_t priv_size ) {
+	struct net_device *netdev;
+
+	netdev = alloc_netdev ( priv_size );
+	if ( netdev ) {
+		netdev->ll_protocol = &infiniband_protocol;
+	}
+	return netdev;
+}
+
+#endif /* _GPXE_INFINIBAND_H */

src/include/gpxe/netdevice.h

@@ -19,10 +19,10 @@ struct ll_protocol;
 struct device;
 
 /** Maximum length of a link-layer address */
-#define MAX_LL_ADDR_LEN 6
+#define MAX_LL_ADDR_LEN 20
 
 /** Maximum length of a link-layer header */
-#define MAX_LL_HEADER_LEN 16
+#define MAX_LL_HEADER_LEN 32
 
 /** Maximum length of a network-layer address */
 #define MAX_NET_ADDR_LEN 4