Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 461 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/netdevice.h b/pfinet/linux-src/include/linux/netdevice.h
new file mode 100644
index 00000000..6d43f98d
--- /dev/null
+++ b/pfinet/linux-src/include/linux/netdevice.h
@@ -0,0 +1,461 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Definitions for the Interfaces handler.
+ *
+ * Version:	@(#)dev.h	1.0.10	08/12/93
+ *
+ * Authors:	Ross Biro, <bir7@leland.Stanford.Edu>
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Corey Minyard <wf-rch!minyard@relay.EU.net>
+ *		Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
+ *		Alan Cox, <Alan.Cox@linux.org>
+ *		Bjorn Ekwall. <bj0rn@blox.se>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *		Moved to /usr/include/linux for NET3
+ */
+#ifndef _LINUX_NETDEVICE_H
+#define _LINUX_NETDEVICE_H
+
+#include <linux/config.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <linux/if_packet.h>
+
+#include <asm/atomic.h>
+
+#ifdef __KERNEL__
+#ifdef CONFIG_NET_PROFILE
+#include <net/profile.h>
+#endif
+#endif
+
+/*
+ *	For future expansion when we will have different priorities. 
+ */
+ 
+#define MAX_ADDR_LEN	7		/* Largest hardware address length */
+
+/*
+ *	Compute the worst case header length according to the protocols
+ *	used.
+ */
+ 
+#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
+#define LL_MAX_HEADER	32
+#else
+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
+#define LL_MAX_HEADER	96
+#else
+#define LL_MAX_HEADER	48
+#endif
+#endif
+
+#if !defined(CONFIG_NET_IPIP) && \
+    !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
+#define MAX_HEADER LL_MAX_HEADER
+#else
+#define MAX_HEADER (LL_MAX_HEADER + 48)
+#endif
+
+/*
+ *	Network device statistics. Akin to the 2.0 ether stats but
+ *	with byte counters.
+ */
+ 
+struct net_device_stats
+{
+	unsigned long	rx_packets;		/* total packets received	*/
+	unsigned long	tx_packets;		/* total packets transmitted	*/
+	unsigned long	rx_bytes;		/* total bytes received 	*/
+	unsigned long	tx_bytes;		/* total bytes transmitted	*/
+	unsigned long	rx_errors;		/* bad packets received		*/
+	unsigned long	tx_errors;		/* packet transmit problems	*/
+	unsigned long	rx_dropped;		/* no space in linux buffers	*/
+	unsigned long	tx_dropped;		/* no space available in linux	*/
+	unsigned long	multicast;		/* multicast packets received	*/
+	unsigned long	collisions;
+
+	/* detailed rx_errors: */
+	unsigned long	rx_length_errors;
+	unsigned long	rx_over_errors;		/* receiver ring buff overflow	*/
+	unsigned long	rx_crc_errors;		/* recved pkt with crc error	*/
+	unsigned long	rx_frame_errors;	/* recv'd frame alignment error */
+	unsigned long	rx_fifo_errors;		/* recv'r fifo overrun		*/
+	unsigned long	rx_missed_errors;	/* receiver missed packet	*/
+
+	/* detailed tx_errors */
+	unsigned long	tx_aborted_errors;
+	unsigned long	tx_carrier_errors;
+	unsigned long	tx_fifo_errors;
+	unsigned long	tx_heartbeat_errors;
+	unsigned long	tx_window_errors;
+	
+	/* for cslip etc */
+	unsigned long	rx_compressed;
+	unsigned long	tx_compressed;
+};
+
+#ifdef CONFIG_NET_FASTROUTE
+struct net_fastroute_stats
+{
+	int		hits;
+	int		succeed;
+	int		deferred;
+	int		latency_reduction;
+};
+#endif
+
+/* Media selection options. */
+enum {
+        IF_PORT_UNKNOWN = 0,
+        IF_PORT_10BASE2,
+        IF_PORT_10BASET,
+        IF_PORT_AUI,
+        IF_PORT_100BASET,
+        IF_PORT_100BASETX,
+        IF_PORT_100BASEFX
+};
+
+#ifdef __KERNEL__
+
+extern const char *if_port_text[];
+
+#include <linux/skbuff.h>
+
+struct neighbour;
+struct neigh_parms;
+struct sk_buff;
+
+/*
+ *	We tag multicasts with these structures.
+ */
+ 
+struct dev_mc_list
+{	
+	struct dev_mc_list	*next;
+	__u8			dmi_addr[MAX_ADDR_LEN];
+	unsigned char		dmi_addrlen;
+	int			dmi_users;
+	int			dmi_gusers;
+};
+
+struct hh_cache
+{
+	struct hh_cache *hh_next;	/* Next entry			     */
+	atomic_t	hh_refcnt;	/* number of users                   */
+	unsigned short  hh_type;	/* protocol identifier, f.e ETH_P_IP */
+	int		(*hh_output)(struct sk_buff *skb);
+	rwlock_t	hh_lock;
+	/* cached hardware header; allow for machine alignment needs.        */
+	unsigned long	hh_data[16/sizeof(unsigned long)];
+};
+
+
+/*
+ *	The DEVICE structure.
+ *	Actually, this whole structure is a big mistake.  It mixes I/O
+ *	data with strictly "high-level" data, and it has to know about
+ *	almost every data structure used in the INET module.
+ *
+ *	FIXME: cleanup struct device such that network protocol info
+ *	moves out.
+ */
+
+struct device
+{
+
+	/*
+	 * This is the first field of the "visible" part of this structure
+	 * (i.e. as seen by users in the "Space.c" file).  It is the name
+	 * the interface.
+	 */
+	char			*name;
+
+	/*
+	 *	I/O specific fields
+	 *	FIXME: Merge these and struct ifmap into one
+	 */
+	unsigned long		rmem_end;	/* shmem "recv" end	*/
+	unsigned long		rmem_start;	/* shmem "recv" start	*/
+	unsigned long		mem_end;	/* shared mem end	*/
+	unsigned long		mem_start;	/* shared mem start	*/
+	unsigned long		base_addr;	/* device I/O address	*/
+	unsigned int		irq;		/* device IRQ number	*/
+	
+	/* Low-level status flags. */
+	volatile unsigned char	start;		/* start an operation	*/
+	/*
+	 * These two are just single-bit flags, but due to atomicity
+	 * reasons they have to be inside a "unsigned long". However,
+	 * they should be inside the SAME unsigned long instead of
+	 * this wasteful use of memory..
+	 */
+	unsigned long		interrupt;	/* bitops.. */
+	unsigned long		tbusy;		/* transmitter busy */
+	
+	struct device		*next;
+	
+	/* The device initialization function. Called only once. */
+	int			(*init)(struct device *dev);
+	void			(*destructor)(struct device *dev);
+
+	/* Interface index. Unique device identifier	*/
+	int			ifindex;
+	int			iflink;
+
+	/*
+	 *	Some hardware also needs these fields, but they are not
+	 *	part of the usual set specified in Space.c.
+	 */
+
+	unsigned char		if_port;	/* Selectable AUI, TP,..*/
+	unsigned char		dma;		/* DMA channel		*/
+
+	struct net_device_stats* (*get_stats)(struct device *dev);
+	struct iw_statistics*	(*get_wireless_stats)(struct device *dev);
+
+	/*
+	 * This marks the end of the "visible" part of the structure. All
+	 * fields hereafter are internal to the system, and may change at
+	 * will (read: may be cleaned up at will).
+	 */
+
+	/* These may be needed for future network-power-down code. */
+	unsigned long		trans_start;	/* Time (in jiffies) of last Tx	*/
+	unsigned long		last_rx;	/* Time of last Rx	*/
+	
+	unsigned short		flags;	/* interface flags (a la BSD)	*/
+	unsigned short		gflags;
+	unsigned		mtu;	/* interface MTU value		*/
+	unsigned short		type;	/* interface hardware type	*/
+	unsigned short		hard_header_len;	/* hardware hdr length	*/
+	void			*priv;	/* pointer to private data	*/
+	
+	/* Interface address info. */
+	unsigned char		broadcast[MAX_ADDR_LEN];	/* hw bcast add	*/
+	unsigned char		pad;		/* make dev_addr aligned to 8 bytes */
+	unsigned char		dev_addr[MAX_ADDR_LEN];	/* hw address	*/
+	unsigned char		addr_len;	/* hardware address length	*/
+
+	struct dev_mc_list	*mc_list;	/* Multicast mac addresses	*/
+	int			mc_count;	/* Number of installed mcasts	*/
+	int			promiscuity;
+	int			allmulti;
+    
+	/* For load balancing driver pair support */
+  
+	unsigned long		pkt_queue;	/* Packets queued	*/
+	struct device		*slave;		/* Slave device		*/
+
+	/* Protocol specific pointers */
+	
+	void 			*atalk_ptr;	/* AppleTalk link 	*/
+	void			*ip_ptr;	/* IPv4 specific data	*/  
+	void                    *dn_ptr;        /* DECnet specific data */
+
+	struct Qdisc		*qdisc;
+	struct Qdisc		*qdisc_sleeping;
+	struct Qdisc		*qdisc_list;
+	unsigned long		tx_queue_len;	/* Max frames per queue allowed */
+
+	/* Pointers to interface service routines.	*/
+	int			(*open)(struct device *dev);
+	int			(*stop)(struct device *dev);
+	int			(*hard_start_xmit) (struct sk_buff *skb,
+						    struct device *dev);
+	int			(*hard_header) (struct sk_buff *skb,
+						struct device *dev,
+						unsigned short type,
+						void *daddr,
+						void *saddr,
+						unsigned len);
+	int			(*rebuild_header)(struct sk_buff *skb);
+#define HAVE_MULTICAST			 
+	void			(*set_multicast_list)(struct device *dev);
+#define HAVE_SET_MAC_ADDR  		 
+	int			(*set_mac_address)(struct device *dev,
+						   void *addr);
+#define HAVE_PRIVATE_IOCTL
+	int			(*do_ioctl)(struct device *dev,
+					    struct ifreq *ifr, int cmd);
+#define HAVE_SET_CONFIG
+	int			(*set_config)(struct device *dev,
+					      struct ifmap *map);
+#define HAVE_HEADER_CACHE
+	int			(*hard_header_cache)(struct neighbour *neigh,
+						     struct hh_cache *hh);
+	void			(*header_cache_update)(struct hh_cache *hh,
+						       struct device *dev,
+						       unsigned char *  haddr);
+#define HAVE_CHANGE_MTU
+	int			(*change_mtu)(struct device *dev, int new_mtu);
+
+	int			(*hard_header_parse)(struct sk_buff *skb,
+						     unsigned char *haddr);
+	int			(*neigh_setup)(struct device *dev, struct neigh_parms *);
+	int			(*accept_fastpath)(struct device *, struct dst_entry*);
+
+#ifdef CONFIG_NET_FASTROUTE
+	/* Really, this semaphore may be necessary and for not fastroute code;
+	   f.e. SMP??
+	 */
+	int			tx_semaphore;
+#define NETDEV_FASTROUTE_HMASK 0xF
+	/* Semi-private data. Keep it at the end of device struct. */
+	struct dst_entry	*fastpath[NETDEV_FASTROUTE_HMASK+1];
+#endif
+};
+
+
+struct packet_type 
+{
+	unsigned short		type;	/* This is really htons(ether_type).	*/
+	struct device		*dev;	/* NULL is wildcarded here		*/
+	int			(*func) (struct sk_buff *, struct device *,
+					 struct packet_type *);
+	void			*data;	/* Private to the packet type		*/
+	struct packet_type	*next;
+};
+
+
+#include <linux/interrupt.h>
+#include <linux/notifier.h>
+
+extern struct device		loopback_dev;		/* The loopback */
+extern struct device		*dev_base;		/* All devices */
+extern struct packet_type 	*ptype_base[16];	/* Hashed types */
+extern int			netdev_dropping;
+extern int			net_cpu_congestion;
+
+extern struct device    *dev_getbyhwaddr(unsigned short type, char *hwaddr);
+extern void		dev_add_pack(struct packet_type *pt);
+extern void		dev_remove_pack(struct packet_type *pt);
+extern struct device	*dev_get(const char *name);
+extern struct device	*dev_alloc(const char *name, int *err);
+extern int		dev_alloc_name(struct device *dev, const char *name);
+extern int		dev_open(struct device *dev);
+extern int		dev_close(struct device *dev);
+extern int		dev_queue_xmit(struct sk_buff *skb);
+extern void		dev_loopback_xmit(struct sk_buff *skb);
+extern int		register_netdevice(struct device *dev);
+extern int		unregister_netdevice(struct device *dev);
+extern int 		register_netdevice_notifier(struct notifier_block *nb);
+extern int		unregister_netdevice_notifier(struct notifier_block *nb);
+extern int		dev_new_index(void);
+extern struct device	*dev_get_by_index(int ifindex);
+extern int		dev_restart(struct device *dev);
+
+typedef int gifconf_func_t(struct device * dev, char * bufptr, int len);
+extern int		register_gifconf(unsigned int family, gifconf_func_t * gifconf);
+extern __inline__ int unregister_gifconf(unsigned int family)
+{
+	return register_gifconf(family, 0);
+}
+
+#define HAVE_NETIF_RX 1
+extern void		netif_rx(struct sk_buff *skb);
+extern void		net_bh(void);
+extern int		dev_get_info(char *buffer, char **start, off_t offset, int length, int dummy);
+extern int		dev_ioctl(unsigned int cmd, void *);
+extern int		dev_change_flags(struct device *, unsigned);
+extern void		dev_queue_xmit_nit(struct sk_buff *skb, struct device *dev);
+
+extern void		dev_init(void);
+
+extern int		netdev_nit;
+
+/* Locking protection for page faults during outputs to devices unloaded during the fault */
+
+extern atomic_t		dev_lockct;
+
+/*
+ *	These two don't currently need to be atomic
+ *	but they may do soon. Do it properly anyway.
+ */
+
+extern __inline__ void  dev_lock_list(void)
+{
+	atomic_inc(&dev_lockct);
+}
+
+extern __inline__ void  dev_unlock_list(void)
+{
+	atomic_dec(&dev_lockct);
+}
+
+/*
+ *	This almost never occurs, isn't in performance critical paths
+ *	and we can thus be relaxed about it. 
+ *
+ *	FIXME: What if this is being run as a real time process ??
+ *		Linus: We need a way to force a yield here ?
+ *
+ *	FIXME: Though dev_lockct is atomic varible, locking procedure
+ *		is not atomic.
+ */
+
+extern __inline__ void dev_lock_wait(void)
+{
+	while (atomic_read(&dev_lockct)) {
+		current->policy |= SCHED_YIELD;
+		schedule();
+	}
+}
+
+extern __inline__ void dev_init_buffers(struct device *dev)
+{
+	/* DO NOTHING */
+}
+
+/* These functions live elsewhere (drivers/net/net_init.c, but related) */
+
+extern void		ether_setup(struct device *dev);
+extern void		fddi_setup(struct device *dev);
+extern void		tr_setup(struct device *dev);
+extern void		fc_setup(struct device *dev);
+extern void		tr_freedev(struct device *dev);
+extern void		fc_freedev(struct device *dev);
+extern int		ether_config(struct device *dev, struct ifmap *map);
+/* Support for loadable net-drivers */
+extern int		register_netdev(struct device *dev);
+extern void		unregister_netdev(struct device *dev);
+extern int		register_trdev(struct device *dev);
+extern void		unregister_trdev(struct device *dev);
+extern int		register_fcdev(struct device *dev);
+extern void		unregister_fcdev(struct device *dev);
+/* Functions used for multicast support */
+extern void		dev_mc_upload(struct device *dev);
+extern int 		dev_mc_delete(struct device *dev, void *addr, int alen, int all);
+extern int		dev_mc_add(struct device *dev, void *addr, int alen, int newonly);
+extern void		dev_mc_discard(struct device *dev);
+extern void		dev_set_promiscuity(struct device *dev, int inc);
+extern void		dev_set_allmulti(struct device *dev, int inc);
+extern void		netdev_state_change(struct device *dev);
+/* Load a device via the kmod */
+extern void		dev_load(const char *name);
+extern void		dev_mcast_init(void);
+extern int		netdev_register_fc(struct device *dev, void (*stimul)(struct device *dev));
+extern void		netdev_unregister_fc(int bit);
+extern int		netdev_dropping;
+extern int		netdev_max_backlog;
+extern atomic_t		netdev_rx_dropped;
+extern unsigned long	netdev_fc_xoff;
+#ifdef CONFIG_NET_FASTROUTE
+extern int		netdev_fastroute;
+extern int		netdev_fastroute_obstacles;
+extern void		dev_clear_fastroute(struct device *dev);
+extern struct net_fastroute_stats dev_fastroute_stat;
+#endif
+
+
+#endif /* __KERNEL__ */
+
+#endif	/* _LINUX_DEV_H */