187 lines
4.5 KiB
C
187 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#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 int aarp_proto_init(void);
|
|
|
|
/* Inter module exports */
|
|
|
|
/* Give a device find its atif control structure */
|
|
#if IS_ENABLED(CONFIG_ATALK)
|
|
static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
|
|
{
|
|
return dev->atalk_ptr;
|
|
}
|
|
#endif
|
|
|
|
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;
|
|
|
|
struct aarp_iter_state {
|
|
int bucket;
|
|
struct aarp_entry **table;
|
|
};
|
|
|
|
extern const struct seq_operations aarp_seq_ops;
|
|
|
|
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 int atalk_register_sysctl(void);
|
|
extern void atalk_unregister_sysctl(void);
|
|
#else
|
|
static inline int atalk_register_sysctl(void)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void atalk_unregister_sysctl(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
extern int atalk_proc_init(void);
|
|
extern void atalk_proc_exit(void);
|
|
#else
|
|
static inline int atalk_proc_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void atalk_proc_exit(void)
|
|
{
|
|
}
|
|
#endif /* CONFIG_PROC_FS */
|
|
|
|
#endif /* __LINUX_ATALK_H__ */
|