Add "name" field to struct device to allow human-readable hardware device

names.

Add "dev" pointer in struct net_device to tie network interfaces back to a
hardware device.

Force natural alignment of data types in __table() macros.  This seems to
prevent gcc from taking the unilateral decision to occasionally increase
their alignment (which screws up the table packing).

src/include/gpxe/arp.h

@@ -27,7 +27,8 @@ struct arp_net_protocol {
 };
 
 /** Declare an ARP protocol */
-#define __arp_net_protocol __table ( arp_net_protocols, 01 )
+#define __arp_net_protocol \
+	__table ( struct arp_net_protocol, arp_net_protocols, 01 )
 
 extern int arp_resolve ( struct net_device *netdev,
 			 struct net_protocol *net_protocol,

src/include/gpxe/command.h

@@ -17,6 +17,6 @@ struct command {
 	int ( * exec ) ( int argc, char **argv );
 };
 
-#define __command __table ( commands, 01 )
+#define __command __table ( struct command, commands, 01 )
 
 #endif /* _GPXE_COMMAND_H */

src/include/gpxe/device.h

@@ -13,6 +13,8 @@
 
 /** A hardware device */
 struct device {
+	/** Name */
+	char name[16];
 	/** Devices on the same bus */
 	struct list_head siblings;
 	/** Devices attached to this device */
@@ -28,8 +30,6 @@ struct device {
  *
  */
 struct root_device {
-	/** Name */
-	const char *name;
 	/** Device chain
 	 *
 	 * A root device has a NULL parent field.
@@ -62,7 +62,7 @@ struct root_driver {
 };
 
 /** Declare a root device */
-#define __root_device __table ( root_devices, 01 )
+#define __root_device __table ( struct root_device, root_devices, 01 )
 
 extern int probe_devices ( void );
 extern void remove_devices ( void );

src/include/gpxe/errortab.h

@@ -15,6 +15,6 @@ struct errortab {
 	const char *text;
 };
 
-#define __errortab __table ( errortab, 01 )
+#define __errortab __table ( struct errortab, errortab, 01 )
 
 #endif /* _GPXE_ERRORTAB_H */

src/include/gpxe/init.h

@@ -46,7 +46,7 @@ struct init_fn {
 /* Macro for creating an initialisation function table entry */
 #define INIT_FN( init_order, init_func, reset_func, exit_func )	\
 	struct init_fn PREFIX_OBJECT(init_fn__)			\
-	    __table ( init_fn, init_order ) = {			\
+	    __table ( struct init_fn, init_fn, init_order ) = {	\
 		.init = init_func,				\
 		.reset = reset_func,				\
 		.exit = exit_func,				\

src/include/gpxe/netdevice.h

@@ -16,6 +16,7 @@ struct pk_buff;
 struct net_device;
 struct net_protocol;
 struct ll_protocol;
+struct device;
 
 /** Maximum length of a link-layer address */
 #define MAX_LL_ADDR_LEN 6
@@ -140,6 +141,8 @@ struct net_device {
 	struct list_head list;
 	/** Name of this network device */
 	char name[8];
+	/** Underlying hardware device */
+	struct device *dev;
 	/** List of persistent reference holders */
 	struct list_head references;
 
@@ -219,10 +222,10 @@ struct net_device {
 #define NETDEV_OPEN 0x0001
 
 /** Declare a link-layer protocol */
-#define __ll_protocol  __table ( ll_protocols, 01 )
+#define __ll_protocol  __table ( struct ll_protocol, ll_protocols, 01 )
 
 /** Declare a network-layer protocol */
-#define __net_protocol __table ( net_protocols, 01 )
+#define __net_protocol __table ( struct net_protocol, net_protocols, 01 )
 
 extern struct list_head net_devices;
 

src/include/gpxe/pci.h

@@ -277,8 +277,8 @@ struct pci_device {
 	 * field.
 	 */
 	void *priv;
-	/** Device name */
-	const char *name;
+	/** Driver name */
+	const char *driver_name;
 };
 
 /** A PCI driver */
@@ -305,7 +305,7 @@ struct pci_driver {
 };
 
 /** Declare a PCI driver */
-#define __pci_driver __table ( pci_drivers, 01 )
+#define __pci_driver __table ( struct pci_driver, pci_drivers, 01 )
 
 #define PCI_DEVFN( slot, func )	( ( (slot) << 3 ) | (func) )
 #define PCI_SLOT( devfn )	( ( (devfn) >> 3 ) & 0x1f )

src/include/gpxe/settings.h

@@ -66,7 +66,8 @@ struct config_setting_type {
 };
 
 /** Declare a configuration setting type */
-#define	__config_setting_type __table ( config_setting_types, 01 )
+#define	__config_setting_type \
+	__table ( struct config_setting_type, config_setting_types, 01 )
 
 /**
  * A configuration setting
@@ -98,7 +99,7 @@ struct config_setting {
 };
 
 /** Declare a configuration setting */
-#define	__config_setting __table ( config_settings, 01 )
+#define	__config_setting __table ( struct config_setting, config_settings, 01 )
 
 /**
  * Show value of setting

src/include/gpxe/tables.h

@@ -165,16 +165,17 @@
  */
 
 #ifdef DOXYGEN
-#define __attribute__(x)
+#define __attribute__( x )
 #endif
 
-#define __table_str(x) #x
-#define __table_section(table,idx) \
-	__section__ ( ".tbl." __table_str(table) "." __table_str(idx) )
+#define __table_str( x ) #x
+#define __table_section( table, idx ) \
+	__section__ ( ".tbl." __table_str ( table ) "." __table_str ( idx ) )
 
-#define __table_section_start(table) __table_section(table,00)
-#define __table_section_end(table) __table_section(table,99)
+#define __table_section_start( table ) __table_section ( table, 00 )
+#define __table_section_end( table ) __table_section ( table, 99 )
 
+#define __natural_alignment( type ) __aligned__ ( __alignof__ ( type ) )
 
 /**
  * Linker table entry.
@@ -191,8 +192,9 @@
  * @endcode
  *
  */
-#define __table(table,idx) \
-	__attribute__ (( __table_section(table,idx) ))
+#define __table( type, table, idx )				\
+	__attribute__ (( __table_section ( table, idx ),	\
+			 __natural_alignment ( type ) ))
 
 /**
  * Linker table start marker.
@@ -207,8 +209,7 @@
  * @endcode
  *
  */
-#define __table_start(table) \
-	__attribute__ (( __table_section_start(table) ))
+#define __table_start( type, table ) __table ( type, table, 00 )
 
 /**
  * Linker table end marker.
@@ -223,7 +224,6 @@
  * @endcode
  *
  */
-#define __table_end(table) \
-	__attribute__ (( __table_section_end(table) ))
+#define __table_end( type, table ) __table ( type, table, 99 )
 
 #endif /* _GPXE_TABLES_H */

src/include/gpxe/tcpip.h

@@ -99,10 +99,12 @@ struct tcpip_net_protocol {
 };
 
 /** Declare a TCP/IP transport-layer protocol */
-#define	__tcpip_protocol __table ( tcpip_protocols, 01 )
+#define	__tcpip_protocol \
+	__table ( struct tcpip_protocol, tcpip_protocols, 01 )
 
 /** Declare a TCP/IP network-layer protocol */
-#define	__tcpip_net_protocol __table ( tcpip_net_protocols, 01 )
+#define	__tcpip_net_protocol \
+	__table ( struct tcpip_net_protocol, tcpip_net_protocols, 01 )
 
 extern int tcpip_rx ( struct pk_buff *pkb, uint8_t tcpip_proto,
 		      struct sockaddr_tcpip *st_src,