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#define NR_COND_ACK_PENDING 0x01 #define NR_COND_REJECT 0x02 #define NR_COND_PEER_RX_BUSY 0x04 #define NR_COND_OWN_RX_BUSY 0x08 #define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */ #define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */ #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */ #define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */ #define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */ #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */ #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */ #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */ #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */ #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */ #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */ #define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */ #define NR_MODULUS 256 #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */ #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */ struct nr_sock { struct sock sock; ax25_address user_addr, source_addr, dest_addr; struct net_device *device; unsigned char my_index, my_id; unsigned char your_index, your_id; unsigned char state, condition, bpqext, window; unsigned short vs, vr, va, vl; unsigned char n2, n2count; unsigned long t1, t2, t4, idle; unsigned short fraglen; struct timer_list t1timer; struct timer_list t2timer; struct timer_list t4timer; struct timer_list idletimer; struct sk_buff_head ack_queue; struct sk_buff_head reseq_queue; struct sk_buff_head frag_queue; }; #define nr_sk(sk) ((struct nr_sock *)(sk)) struct nr_neigh { struct hlist_node neigh_node; ax25_address callsign; ax25_digi *digipeat; ax25_cb *ax25; struct net_device *dev; unsigned char quality; unsigned char locked; unsigned short count; unsigned int number; unsigned char failed; refcount_t refcount; }; struct nr_route { unsigned char quality; unsigned char obs_count; struct nr_neigh *neighbour; }; struct nr_node { struct hlist_node node_node; ax25_address callsign; char mnemonic[7]; unsigned char which; unsigned char count; struct nr_route routes[3]; refcount_t refcount; spinlock_t node_lock; }; /********************************************************************* * nr_node & nr_neigh lists, refcounting and locking *********************************************************************/ #define nr_node_hold(__nr_node) \ refcount_inc(&((__nr_node)->refcount)) static __inline__ void nr_node_put(struct nr_node *nr_node) { if (refcount_dec_and_test(&nr_node->refcount)) { kfree(nr_node); } } #define nr_neigh_hold(__nr_neigh) \ refcount_inc(&((__nr_neigh)->refcount)) static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) { if (refcount_dec_and_test(&nr_neigh->refcount)) { if (nr_neigh->ax25) ax25_cb_put(nr_neigh->ax25); kfree(nr_neigh->digipeat); kfree(nr_neigh); } } /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter. */ static __inline__ void nr_node_lock(struct nr_node *nr_node) { nr_node_hold(nr_node); spin_lock_bh(&nr_node->node_lock); } static __inline__ void nr_node_unlock(struct nr_node *nr_node) { spin_unlock_bh(&nr_node->node_lock); nr_node_put(nr_node); } #define nr_neigh_for_each(__nr_neigh, list) \ hlist_for_each_entry(__nr_neigh, list, neigh_node) #define nr_neigh_for_each_safe(__nr_neigh, node2, list) \ hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node) #define nr_node_for_each(__nr_node, list) \ hlist_for_each_entry(__nr_node, list, node_node) #define nr_node_for_each_safe(__nr_node, node2, list) \ hlist_for_each_entry_safe(__nr_node, node2, list, node_node) /*********************************************************************/ /* af_netrom.c */ extern int sysctl_netrom_default_path_quality; extern int sysctl_netrom_obsolescence_count_initialiser; extern int sysctl_netrom_network_ttl_initialiser; extern int sysctl_netrom_transport_timeout; extern int sysctl_netrom_transport_maximum_tries; extern int sysctl_netrom_transport_acknowledge_delay; extern int sysctl_netrom_transport_busy_delay; extern int sysctl_netrom_transport_requested_window_size; extern int sysctl_netrom_transport_no_activity_timeout; extern int sysctl_netrom_routing_control; extern int sysctl_netrom_link_fails_count; extern int sysctl_netrom_reset_circuit; int nr_rx_frame(struct sk_buff *, struct net_device *); void nr_destroy_socket(struct sock *); /* nr_dev.c */ int nr_rx_ip(struct sk_buff *, struct net_device *); void nr_setup(struct net_device *); /* nr_in.c */ int nr_process_rx_frame(struct sock *, struct sk_buff *); /* nr_loopback.c */ void nr_loopback_init(void); void nr_loopback_clear(void); int nr_loopback_queue(struct sk_buff *); /* nr_out.c */ void nr_output(struct sock *, struct sk_buff *); void nr_send_nak_frame(struct sock *); void nr_kick(struct sock *); void nr_transmit_buffer(struct sock *, struct sk_buff *); void nr_establish_data_link(struct sock *); void nr_enquiry_response(struct sock *); void nr_check_iframes_acked(struct sock *, unsigned short); /* nr_route.c */ void nr_rt_device_down(struct net_device *); struct net_device *nr_dev_first(void); struct net_device *nr_dev_get(ax25_address *); int nr_rt_ioctl(unsigned int, void __user *); void nr_link_failed(ax25_cb *, int); int nr_route_frame(struct sk_buff *, ax25_cb *); extern const struct seq_operations nr_node_seqops; extern const struct seq_operations nr_neigh_seqops; void nr_rt_free(void); /* nr_subr.c */ void nr_clear_queues(struct sock *); void nr_frames_acked(struct sock *, unsigned short); void nr_requeue_frames(struct sock *); int nr_validate_nr(struct sock *, unsigned short); int nr_in_rx_window(struct sock *, unsigned short); void nr_write_internal(struct sock *, int); void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags); /* * This routine is called when a Connect Acknowledge with the Choke Flag * set is needed to refuse a connection. */ #define nr_transmit_refusal(skb, mine) \ do { \ __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \ } while (0) /* * This routine is called when we don't have a circuit matching an incoming * NET/ROM packet. This is an G8PZT Xrouter extension. */ #define nr_transmit_reset(skb, mine) \ do { \ __nr_transmit_reply((skb), (mine), NR_RESET); \ } while (0) void nr_disconnect(struct sock *, int); /* nr_timer.c */ void nr_init_timers(struct sock *sk); void nr_start_heartbeat(struct sock *); void nr_start_t1timer(struct sock *); void nr_start_t2timer(struct sock *); void nr_start_t4timer(struct sock *); void nr_start_idletimer(struct sock *); void nr_stop_heartbeat(struct sock *); void nr_stop_t1timer(struct sock *); void nr_stop_t2timer(struct sock *); void nr_stop_t4timer(struct sock *); void nr_stop_idletimer(struct sock *); int nr_t1timer_running(struct sock *); /* sysctl_net_netrom.c */ int nr_register_sysctl(void); void nr_unregister_sysctl(void); #endif