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186 lines
4.5 KiB
186 lines
4.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __LINUX_ATALK_H__ |
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#define __LINUX_ATALK_H__ |
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#include <net/sock.h> |
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#include <uapi/linux/atalk.h> |
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struct atalk_route { |
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struct net_device *dev; |
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struct atalk_addr target; |
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struct atalk_addr gateway; |
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int flags; |
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struct atalk_route *next; |
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}; |
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/** |
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* struct atalk_iface - AppleTalk Interface |
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* @dev - Network device associated with this interface |
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* @address - Our address |
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* @status - What are we doing? |
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* @nets - Associated direct netrange |
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* @next - next element in the list of interfaces |
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*/ |
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struct atalk_iface { |
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struct net_device *dev; |
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struct atalk_addr address; |
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int status; |
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#define ATIF_PROBE 1 /* Probing for an address */ |
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#define ATIF_PROBE_FAIL 2 /* Probe collided */ |
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struct atalk_netrange nets; |
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struct atalk_iface *next; |
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}; |
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struct atalk_sock { |
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/* struct sock has to be the first member of atalk_sock */ |
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struct sock sk; |
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__be16 dest_net; |
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__be16 src_net; |
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unsigned char dest_node; |
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unsigned char src_node; |
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unsigned char dest_port; |
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unsigned char src_port; |
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}; |
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static inline struct atalk_sock *at_sk(struct sock *sk) |
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{ |
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return (struct atalk_sock *)sk; |
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} |
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struct ddpehdr { |
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__be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ |
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__be16 deh_sum; |
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__be16 deh_dnet; |
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__be16 deh_snet; |
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__u8 deh_dnode; |
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__u8 deh_snode; |
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__u8 deh_dport; |
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__u8 deh_sport; |
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/* And netatalk apps expect to stick the type in themselves */ |
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}; |
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static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) |
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{ |
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return (struct ddpehdr *)skb_transport_header(skb); |
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} |
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/* AppleTalk AARP headers */ |
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struct elapaarp { |
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__be16 hw_type; |
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#define AARP_HW_TYPE_ETHERNET 1 |
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#define AARP_HW_TYPE_TOKENRING 2 |
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__be16 pa_type; |
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__u8 hw_len; |
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__u8 pa_len; |
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#define AARP_PA_ALEN 4 |
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__be16 function; |
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#define AARP_REQUEST 1 |
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#define AARP_REPLY 2 |
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#define AARP_PROBE 3 |
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__u8 hw_src[ETH_ALEN]; |
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__u8 pa_src_zero; |
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__be16 pa_src_net; |
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__u8 pa_src_node; |
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__u8 hw_dst[ETH_ALEN]; |
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__u8 pa_dst_zero; |
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__be16 pa_dst_net; |
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__u8 pa_dst_node; |
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} __attribute__ ((packed)); |
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static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) |
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{ |
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return (struct elapaarp *)skb_transport_header(skb); |
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} |
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/* Not specified - how long till we drop a resolved entry */ |
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#define AARP_EXPIRY_TIME (5 * 60 * HZ) |
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/* Size of hash table */ |
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#define AARP_HASH_SIZE 16 |
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/* Fast retransmission timer when resolving */ |
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#define AARP_TICK_TIME (HZ / 5) |
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/* Send 10 requests then give up (2 seconds) */ |
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#define AARP_RETRANSMIT_LIMIT 10 |
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/* |
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* Some value bigger than total retransmit time + a bit for last reply to |
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* appear and to stop continual requests |
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*/ |
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#define AARP_RESOLVE_TIME (10 * HZ) |
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extern struct datalink_proto *ddp_dl, *aarp_dl; |
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extern int aarp_proto_init(void); |
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/* Inter module exports */ |
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/* Give a device find its atif control structure */ |
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#if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK) |
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static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) |
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{ |
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return dev->atalk_ptr; |
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} |
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#endif |
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extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev); |
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extern struct net_device *atrtr_get_dev(struct atalk_addr *sa); |
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extern int aarp_send_ddp(struct net_device *dev, |
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struct sk_buff *skb, |
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struct atalk_addr *sa, void *hwaddr); |
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extern void aarp_device_down(struct net_device *dev); |
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extern void aarp_probe_network(struct atalk_iface *atif); |
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extern int aarp_proxy_probe_network(struct atalk_iface *atif, |
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struct atalk_addr *sa); |
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extern void aarp_proxy_remove(struct net_device *dev, |
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struct atalk_addr *sa); |
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extern void aarp_cleanup_module(void); |
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extern struct hlist_head atalk_sockets; |
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extern rwlock_t atalk_sockets_lock; |
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extern struct atalk_route *atalk_routes; |
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extern rwlock_t atalk_routes_lock; |
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extern struct atalk_iface *atalk_interfaces; |
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extern rwlock_t atalk_interfaces_lock; |
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extern struct atalk_route atrtr_default; |
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struct aarp_iter_state { |
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int bucket; |
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struct aarp_entry **table; |
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}; |
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extern const struct seq_operations aarp_seq_ops; |
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extern int sysctl_aarp_expiry_time; |
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extern int sysctl_aarp_tick_time; |
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extern int sysctl_aarp_retransmit_limit; |
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extern int sysctl_aarp_resolve_time; |
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#ifdef CONFIG_SYSCTL |
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extern int atalk_register_sysctl(void); |
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extern void atalk_unregister_sysctl(void); |
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#else |
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static inline int atalk_register_sysctl(void) |
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{ |
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return 0; |
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} |
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static inline void atalk_unregister_sysctl(void) |
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{ |
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} |
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#endif |
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#ifdef CONFIG_PROC_FS |
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extern int atalk_proc_init(void); |
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extern void atalk_proc_exit(void); |
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#else |
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static inline int atalk_proc_init(void) |
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{ |
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return 0; |
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} |
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static inline void atalk_proc_exit(void) |
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{ |
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} |
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#endif /* CONFIG_PROC_FS */ |
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#endif /* __LINUX_ATALK_H__ */
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