diff options
Diffstat (limited to 'include/net/netrom.h')
| -rw-r--r-- | include/net/netrom.h | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/include/net/netrom.h b/include/net/netrom.h new file mode 100644 index 000000000000..45f2c7616d8b --- /dev/null +++ b/include/net/netrom.h @@ -0,0 +1,242 @@ +/* + * Declarations of NET/ROM type objects. + * + * Jonathan Naylor G4KLX 9/4/95 + */ + +#ifndef _NETROM_H +#define _NETROM_H +#include <linux/netrom.h> +#include <linux/list.h> +#include <net/sock.h> + +#define NR_NETWORK_LEN 15 +#define NR_TRANSPORT_LEN 5 + +#define NR_PROTO_IP 0x0C + +#define NR_PROTOEXT 0x00 +#define NR_CONNREQ 0x01 +#define NR_CONNACK 0x02 +#define NR_DISCREQ 0x03 +#define NR_DISCACK 0x04 +#define NR_INFO 0x05 +#define NR_INFOACK 0x06 + +#define NR_CHOKE_FLAG 0x80 +#define NR_NAK_FLAG 0x40 +#define NR_MORE_FLAG 0x20 + +/* Define Link State constants. */ +enum { + NR_STATE_0, + NR_STATE_1, + NR_STATE_2, + NR_STATE_3 +}; + +#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 (120 * HZ) /* Outstanding frames - 120 seconds */ +#define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */ +#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */ +#define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */ +#define NR_DEFAULT_IDLE (0 * 60 * HZ) /* 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_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; + atomic_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]; + atomic_t refcount; + spinlock_t node_lock; +}; + +/********************************************************************* + * nr_node & nr_neigh lists, refcounting and locking + *********************************************************************/ + +#define nr_node_hold(__nr_node) \ + atomic_inc(&((__nr_node)->refcount)) + +static __inline__ void nr_node_put(struct nr_node *nr_node) +{ + if (atomic_dec_and_test(&nr_node->refcount)) { + kfree(nr_node); + } +} + +#define nr_neigh_hold(__nr_neigh) \ + atomic_inc(&((__nr_neigh)->refcount)) + +static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) +{ + if (atomic_dec_and_test(&nr_neigh->refcount)) { + if (nr_neigh->digipeat != NULL) + 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, node, list) \ + hlist_for_each_entry(__nr_neigh, node, list, neigh_node) + +#define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \ + hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node) + +#define nr_node_for_each(__nr_node, node, list) \ + hlist_for_each_entry(__nr_node, node, list, node_node) + +#define nr_node_for_each_safe(__nr_node, node, node2, list) \ + hlist_for_each_entry_safe(__nr_node, 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 nr_rx_frame(struct sk_buff *, struct net_device *); +extern void nr_destroy_socket(struct sock *); + +/* nr_dev.c */ +extern int nr_rx_ip(struct sk_buff *, struct net_device *); +extern void nr_setup(struct net_device *); + +/* nr_in.c */ +extern int nr_process_rx_frame(struct sock *, struct sk_buff *); + +/* nr_loopback.c */ +extern void nr_loopback_init(void); +extern void nr_loopback_clear(void); +extern int nr_loopback_queue(struct sk_buff *); + +/* nr_out.c */ +extern void nr_output(struct sock *, struct sk_buff *); +extern void nr_send_nak_frame(struct sock *); +extern void nr_kick(struct sock *); +extern void nr_transmit_buffer(struct sock *, struct sk_buff *); +extern void nr_establish_data_link(struct sock *); +extern void nr_enquiry_response(struct sock *); +extern void nr_check_iframes_acked(struct sock *, unsigned short); + +/* nr_route.c */ +extern void nr_rt_device_down(struct net_device *); +extern struct net_device *nr_dev_first(void); +extern struct net_device *nr_dev_get(ax25_address *); +extern int nr_rt_ioctl(unsigned int, void __user *); +extern void nr_link_failed(ax25_cb *, int); +extern int nr_route_frame(struct sk_buff *, ax25_cb *); +extern struct file_operations nr_nodes_fops; +extern struct file_operations nr_neigh_fops; +extern void nr_rt_free(void); + +/* nr_subr.c */ +extern void nr_clear_queues(struct sock *); +extern void nr_frames_acked(struct sock *, unsigned short); +extern void nr_requeue_frames(struct sock *); +extern int nr_validate_nr(struct sock *, unsigned short); +extern int nr_in_rx_window(struct sock *, unsigned short); +extern void nr_write_internal(struct sock *, int); +extern void nr_transmit_refusal(struct sk_buff *, int); +extern void nr_disconnect(struct sock *, int); + +/* nr_timer.c */ +extern void nr_init_timers(struct sock *sk); +extern void nr_start_heartbeat(struct sock *); +extern void nr_start_t1timer(struct sock *); +extern void nr_start_t2timer(struct sock *); +extern void nr_start_t4timer(struct sock *); +extern void nr_start_idletimer(struct sock *); +extern void nr_stop_heartbeat(struct sock *); +extern void nr_stop_t1timer(struct sock *); +extern void nr_stop_t2timer(struct sock *); +extern void nr_stop_t4timer(struct sock *); +extern void nr_stop_idletimer(struct sock *); +extern int nr_t1timer_running(struct sock *); + +/* sysctl_net_netrom.c */ +extern void nr_register_sysctl(void); +extern void nr_unregister_sysctl(void); + +#endif |