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1.1 root 1: /*
2: * Declarations of NET/ROM type objects.
3: *
4: * Jonathan Naylor G4KLX 9/4/95
5: */
6:
7: #ifndef _NETROM_H
8: #define _NETROM_H
9: #include <linux/netrom.h>
10:
11: #define NR_T1CLAMPLO (1 * PR_SLOWHZ) /* If defined, clamp at 1 second **/
12: #define NR_T1CLAMPHI (300 * PR_SLOWHZ) /* If defined, clamp at 30 seconds **/
13:
14: #define NR_NETWORK_LEN 15
15: #define NR_TRANSPORT_LEN 5
16:
17: #define NR_PROTO_IP 0x0C
18:
19: #define NR_PROTOEXT 0x00
20: #define NR_CONNREQ 0x01
21: #define NR_CONNACK 0x02
22: #define NR_DISCREQ 0x03
23: #define NR_DISCACK 0x04
24: #define NR_INFO 0x05
25: #define NR_INFOACK 0x06
26:
27: #define NR_CHOKE_FLAG 0x80
28: #define NR_NAK_FLAG 0x40
29: #define NR_MORE_FLAG 0x20
30:
31: /* Define Link State constants. */
32:
33: #define NR_STATE_0 0
34: #define NR_STATE_1 1
35: #define NR_STATE_2 2
36: #define NR_STATE_3 3
37:
38: #define NR_DEFAULT_T1 (120 * PR_SLOWHZ) /* Outstanding frames - 120 seconds */
39: #define NR_DEFAULT_T2 (5 * PR_SLOWHZ) /* Response delay - 5 seconds */
40: #define NR_DEFAULT_N2 3 /* Number of Retries */
41: #define NR_DEFAULT_T4 (180 * PR_SLOWHZ) /* Transport Busy Delay */
42: #define NR_DEFAULT_WINDOW 4 /* Default Window Size */
43: #define NR_DEFAULT_OBS 6 /* Default Obscolesence Count */
44: #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality */
45: #define NR_DEFAULT_TTL 16 /* Default Time To Live */
46: #define NR_MODULUS 256
47: #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable */
48:
49: typedef struct {
50: ax25_address user_addr, source_addr, dest_addr;
51: struct device *device;
52: unsigned char my_index, my_id;
53: unsigned char your_index, your_id;
54: unsigned char state, condition, bpqext, hdrincl;
55: unsigned short vs, vr, va, vl;
56: unsigned char n2, n2count;
57: unsigned short t1, t2, rtt;
58: unsigned short t1timer, t2timer, t4timer;
59: unsigned short fraglen;
60: struct sk_buff_head ack_queue;
61: struct sk_buff_head reseq_queue;
62: struct sk_buff_head frag_queue;
63: struct sock *sk; /* Backlink to socket */
64: } nr_cb;
65:
66: struct nr_route {
67: unsigned char quality;
68: unsigned char obs_count;
69: unsigned short neighbour;
70: };
71:
72: struct nr_node {
73: struct nr_node *next;
74: ax25_address callsign;
75: char mnemonic[7];
76: unsigned char which;
77: unsigned char count;
78: struct nr_route routes[3];
79: };
80:
81: struct nr_neigh {
82: struct nr_neigh *next;
83: ax25_address callsign;
84: ax25_digi *digipeat;
85: struct device *dev;
86: unsigned char quality;
87: unsigned char locked;
88: unsigned short count;
89: unsigned short number;
90: };
91:
92: /* af_netrom.c */
93: extern struct nr_parms_struct nr_default;
94: extern int nr_rx_frame(struct sk_buff *, struct device *);
95: extern void nr_destroy_socket(struct sock *);
96:
97: /* nr_dev.c */
98: extern int nr_rx_ip(struct sk_buff *, struct device *);
99: extern int nr_init(struct device *);
100:
101: #include <net/nrcall.h>
102:
103: /* nr_in.c */
104: extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
105:
106: /* nr_out.c */
107: extern void nr_output(struct sock *, struct sk_buff *);
108: extern void nr_send_nak_frame(struct sock *);
109: extern void nr_kick(struct sock *);
110: extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
111: extern void nr_establish_data_link(struct sock *);
112: extern void nr_enquiry_response(struct sock *);
113: extern void nr_check_iframes_acked(struct sock *, unsigned short);
114:
115: /* nr_route.c */
116: extern void nr_rt_device_down(struct device *);
117: extern struct device *nr_dev_first(void);
118: extern struct device *nr_dev_get(ax25_address *);
119: extern int nr_rt_ioctl(unsigned int, void *);
120: extern void nr_link_failed(ax25_address *, struct device *);
121: extern int nr_route_frame(struct sk_buff *, ax25_cb *);
122: extern int nr_nodes_get_info(char *, char **, off_t, int, int);
123: extern int nr_neigh_get_info(char *, char **, off_t, int, int);
124:
125: /* nr_subr.c */
126: extern void nr_clear_queues(struct sock *);
127: extern void nr_frames_acked(struct sock *, unsigned short);
128: extern void nr_requeue_frames(struct sock *);
129: extern int nr_validate_nr(struct sock *, unsigned short);
130: extern int nr_in_rx_window(struct sock *, unsigned short);
131: extern void nr_write_internal(struct sock *, int);
132: extern void nr_transmit_dm(struct sk_buff *);
133: extern unsigned short nr_calculate_t1(struct sock *);
134: extern void nr_calculate_rtt(struct sock *);
135:
136: /* ax25_timer */
137: extern void nr_set_timer(struct sock *);
138:
139: #endif
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