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/*
* Declarations of NET/ROM type objects.
*
* Jonathan Naylor G4KLX 9/4/95
*/
#ifndef _NETROM_H
#define _NETROM_H
#include <linux/netrom.h>
#define NR_T1CLAMPLO (1 * PR_SLOWHZ) /* If defined, clamp at 1 second **/
#define NR_T1CLAMPHI (300 * PR_SLOWHZ) /* If defined, clamp at 30 seconds **/
#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. */
#define NR_STATE_0 0
#define NR_STATE_1 1
#define NR_STATE_2 2
#define NR_STATE_3 3
#define NR_DEFAULT_T1 (120 * PR_SLOWHZ) /* Outstanding frames - 120 seconds */
#define NR_DEFAULT_T2 (5 * PR_SLOWHZ) /* Response delay - 5 seconds */
#define NR_DEFAULT_N2 3 /* Number of Retries */
#define NR_DEFAULT_T4 (180 * PR_SLOWHZ) /* Transport Busy Delay */
#define NR_DEFAULT_WINDOW 4 /* Default Window Size */
#define NR_DEFAULT_OBS 6 /* Default Obscolesence Count */
#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality */
#define NR_DEFAULT_TTL 16 /* Default Time To Live */
#define NR_MODULUS 256
#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable */
typedef struct {
ax25_address user_addr, source_addr, dest_addr;
struct device *device;
unsigned char my_index, my_id;
unsigned char your_index, your_id;
unsigned char state, condition, bpqext, hdrincl;
unsigned short vs, vr, va, vl;
unsigned char n2, n2count;
unsigned short t1, t2, rtt;
unsigned short t1timer, t2timer, t4timer;
unsigned short fraglen;
struct sk_buff_head ack_queue;
struct sk_buff_head reseq_queue;
struct sk_buff_head frag_queue;
struct sock *sk; /* Backlink to socket */
} nr_cb;
struct nr_route {
unsigned char quality;
unsigned char obs_count;
unsigned short neighbour;
};
struct nr_node {
struct nr_node *next;
ax25_address callsign;
char mnemonic[7];
unsigned char which;
unsigned char count;
struct nr_route routes[3];
};
struct nr_neigh {
struct nr_neigh *next;
ax25_address callsign;
ax25_digi *digipeat;
struct device *dev;
unsigned char quality;
unsigned char locked;
unsigned short count;
unsigned short number;
};
/* af_netrom.c */
extern struct nr_parms_struct nr_default;
extern int nr_rx_frame(struct sk_buff *, struct device *);
extern void nr_destroy_socket(struct sock *);
/* nr_dev.c */
extern int nr_rx_ip(struct sk_buff *, struct device *);
extern int nr_init(struct device *);
#include <net/nrcall.h>
/* nr_in.c */
extern int nr_process_rx_frame(struct sock *, 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 device *);
extern struct device *nr_dev_first(void);
extern struct device *nr_dev_get(ax25_address *);
extern int nr_rt_ioctl(unsigned int, void *);
extern void nr_link_failed(ax25_address *, struct device *);
extern int nr_route_frame(struct sk_buff *, ax25_cb *);
extern int nr_nodes_get_info(char *, char **, off_t, int, int);
extern int nr_neigh_get_info(char *, char **, off_t, int, int);
/* 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_dm(struct sk_buff *);
extern unsigned short nr_calculate_t1(struct sock *);
extern void nr_calculate_rtt(struct sock *);
/* ax25_timer */
extern void nr_set_timer(struct sock *);
#endif
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