Initial import

1 files changed, 168 insertions, 0 deletions

diff --git a/include/linux/atalk.h b/include/linux/atalk.h
new file mode 100644
index 000000000..73fd8b7e9
--- /dev/null
+++ b/include/linux/atalk.h
@@ -0,0 +1,168 @@
+#ifndef __LINUX_ATALK_H__
+#define __LINUX_ATALK_H__
+
+
+#include <net/sock.h>
+#include <uapi/linux/atalk.h>
+
+struct atalk_route {
+	struct net_device  *dev;
+	struct atalk_addr  target;
+	struct atalk_addr  gateway;
+	int		   flags;
+	struct atalk_route *next;
+};
+
+/**
+ *	struct atalk_iface - AppleTalk Interface
+ *	@dev - Network device associated with this interface
+ *	@address - Our address
+ *	@status - What are we doing?
+ *	@nets - Associated direct netrange
+ *	@next - next element in the list of interfaces
+ */
+struct atalk_iface {
+	struct net_device	*dev;
+	struct atalk_addr	address;
+	int			status;
+#define ATIF_PROBE	1		/* Probing for an address */
+#define ATIF_PROBE_FAIL	2		/* Probe collided */
+	struct atalk_netrange	nets;
+	struct atalk_iface	*next;
+};
+	
+struct atalk_sock {
+	/* struct sock has to be the first member of atalk_sock */
+	struct sock	sk;
+	__be16		dest_net;
+	__be16		src_net;
+	unsigned char	dest_node;
+	unsigned char	src_node;
+	unsigned char	dest_port;
+	unsigned char	src_port;
+};
+
+static inline struct atalk_sock *at_sk(struct sock *sk)
+{
+	return (struct atalk_sock *)sk;
+}
+
+struct ddpehdr {
+	__be16	deh_len_hops;	/* lower 10 bits are length, next 4 - hops */
+	__be16	deh_sum;
+	__be16	deh_dnet;
+	__be16	deh_snet;
+	__u8	deh_dnode;
+	__u8	deh_snode;
+	__u8	deh_dport;
+	__u8	deh_sport;
+	/* And netatalk apps expect to stick the type in themselves */
+};
+
+static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
+{
+	return (struct ddpehdr *)skb_transport_header(skb);
+}
+
+/* AppleTalk AARP headers */
+struct elapaarp {
+	__be16	hw_type;
+#define AARP_HW_TYPE_ETHERNET		1
+#define AARP_HW_TYPE_TOKENRING		2
+	__be16	pa_type;
+	__u8	hw_len;
+	__u8	pa_len;
+#define AARP_PA_ALEN			4
+	__be16	function;
+#define AARP_REQUEST			1
+#define AARP_REPLY			2
+#define AARP_PROBE			3
+	__u8	hw_src[ETH_ALEN];
+	__u8	pa_src_zero;
+	__be16	pa_src_net;
+	__u8	pa_src_node;
+	__u8	hw_dst[ETH_ALEN];
+	__u8	pa_dst_zero;
+	__be16	pa_dst_net;
+	__u8	pa_dst_node;
+} __attribute__ ((packed));
+
+static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
+{
+	return (struct elapaarp *)skb_transport_header(skb);
+}
+
+/* Not specified - how long till we drop a resolved entry */
+#define AARP_EXPIRY_TIME	(5 * 60 * HZ)
+/* Size of hash table */
+#define AARP_HASH_SIZE		16
+/* Fast retransmission timer when resolving */
+#define AARP_TICK_TIME		(HZ / 5)
+/* Send 10 requests then give up (2 seconds) */
+#define AARP_RETRANSMIT_LIMIT	10
+/*
+ * Some value bigger than total retransmit time + a bit for last reply to
+ * appear and to stop continual requests
+ */
+#define AARP_RESOLVE_TIME	(10 * HZ)
+
+extern struct datalink_proto *ddp_dl, *aarp_dl;
+extern void aarp_proto_init(void);
+
+/* Inter module exports */
+
+/* Give a device find its atif control structure */
+static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
+{
+	return dev->atalk_ptr;
+}
+
+extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev);
+extern struct net_device *atrtr_get_dev(struct atalk_addr *sa);
+extern int		 aarp_send_ddp(struct net_device *dev,
+				       struct sk_buff *skb,
+				       struct atalk_addr *sa, void *hwaddr);
+extern void		 aarp_device_down(struct net_device *dev);
+extern void		 aarp_probe_network(struct atalk_iface *atif);
+extern int 		 aarp_proxy_probe_network(struct atalk_iface *atif,
+				     struct atalk_addr *sa);
+extern void		 aarp_proxy_remove(struct net_device *dev,
+					   struct atalk_addr *sa);
+
+extern void		aarp_cleanup_module(void);
+
+extern struct hlist_head atalk_sockets;
+extern rwlock_t atalk_sockets_lock;
+
+extern struct atalk_route *atalk_routes;
+extern rwlock_t atalk_routes_lock;
+
+extern struct atalk_iface *atalk_interfaces;
+extern rwlock_t atalk_interfaces_lock;
+
+extern struct atalk_route atrtr_default;
+
+extern const struct file_operations atalk_seq_arp_fops;
+
+extern int sysctl_aarp_expiry_time;
+extern int sysctl_aarp_tick_time;
+extern int sysctl_aarp_retransmit_limit;
+extern int sysctl_aarp_resolve_time;
+
+#ifdef CONFIG_SYSCTL
+extern void atalk_register_sysctl(void);
+extern void atalk_unregister_sysctl(void);
+#else
+#define atalk_register_sysctl()		do { } while(0)
+#define atalk_unregister_sysctl()	do { } while(0)
+#endif
+
+#ifdef CONFIG_PROC_FS
+extern int atalk_proc_init(void);
+extern void atalk_proc_exit(void);
+#else
+#define atalk_proc_init()	({ 0; })
+#define atalk_proc_exit()	do { } while(0)
+#endif /* CONFIG_PROC_FS */
+
+#endif /* __LINUX_ATALK_H__ */