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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_SLOWHZ 10 /* Run timing at 1/10 second */
12:
13: #define NR_NETWORK_LEN 15
14: #define NR_TRANSPORT_LEN 5
15:
16: #define NR_PROTO_IP 0x0C
17:
18: #define NR_PROTOEXT 0x00
19: #define NR_CONNREQ 0x01
20: #define NR_CONNACK 0x02
21: #define NR_DISCREQ 0x03
22: #define NR_DISCACK 0x04
23: #define NR_INFO 0x05
24: #define NR_INFOACK 0x06
25:
26: #define NR_CHOKE_FLAG 0x80
27: #define NR_NAK_FLAG 0x40
28: #define NR_MORE_FLAG 0x20
29:
30: /* Define Link State constants. */
31:
32: #define NR_STATE_0 0
33: #define NR_STATE_1 1
34: #define NR_STATE_2 2
35: #define NR_STATE_3 3
36:
37: #define NR_COND_ACK_PENDING 0x01
38: #define NR_COND_REJECT 0x02
39: #define NR_COND_PEER_RX_BUSY 0x04
40: #define NR_COND_OWN_RX_BUSY 0x08
41:
42: #define NR_DEFAULT_T1 (120 * NR_SLOWHZ) /* Outstanding frames - 120 seconds */
43: #define NR_DEFAULT_T2 (5 * NR_SLOWHZ) /* Response delay - 5 seconds */
44: #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
45: #define NR_DEFAULT_T4 (180 * NR_SLOWHZ) /* Busy Delay - 180 seconds */
46: #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
47: #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
48: #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
49: #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
50: #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
51: #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
52:
53: #define NR_MODULUS 256
54: #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
55: #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
56:
57: typedef struct {
58: ax25_address user_addr, source_addr, dest_addr;
59: struct device *device;
60: unsigned char my_index, my_id;
61: unsigned char your_index, your_id;
62: unsigned char state, condition, bpqext, window;
63: unsigned short vs, vr, va, vl;
64: unsigned char n2, n2count;
65: unsigned short t1, t2, t4;
66: unsigned short t1timer, t2timer, t4timer;
67: unsigned short fraglen;
68: struct sk_buff_head ack_queue;
69: struct sk_buff_head reseq_queue;
70: struct sk_buff_head frag_queue;
71: struct sock *sk; /* Backlink to socket */
72: } nr_cb;
73:
74: struct nr_neigh {
75: struct nr_neigh *next;
76: ax25_address callsign;
77: ax25_digi *digipeat;
78: ax25_cb *ax25;
79: struct device *dev;
80: unsigned char quality;
81: unsigned char locked;
82: unsigned short count;
83: unsigned int number;
84: unsigned char failed;
85: };
86:
87: struct nr_route {
88: unsigned char quality;
89: unsigned char obs_count;
90: struct nr_neigh *neighbour;
91: };
92:
93: struct nr_node {
94: struct nr_node *next;
95: ax25_address callsign;
96: char mnemonic[7];
97: unsigned char which;
98: unsigned char count;
99: struct nr_route routes[3];
100: };
101:
102: /* af_netrom.c */
103: extern int sysctl_netrom_default_path_quality;
104: extern int sysctl_netrom_obsolescence_count_initialiser;
105: extern int sysctl_netrom_network_ttl_initialiser;
106: extern int sysctl_netrom_transport_timeout;
107: extern int sysctl_netrom_transport_maximum_tries;
108: extern int sysctl_netrom_transport_acknowledge_delay;
109: extern int sysctl_netrom_transport_busy_delay;
110: extern int sysctl_netrom_transport_requested_window_size;
111: extern int sysctl_netrom_routing_control;
112: extern int sysctl_netrom_link_fails_count;
113: extern int nr_rx_frame(struct sk_buff *, struct device *);
114: extern void nr_destroy_socket(struct sock *);
115:
116: /* nr_dev.c */
117: extern int nr_rx_ip(struct sk_buff *, struct device *);
118: extern int nr_init(struct device *);
119:
120: #include <net/nrcall.h>
121:
122: /* nr_in.c */
123: extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
124:
125: /* nr_out.c */
126: extern void nr_output(struct sock *, struct sk_buff *);
127: extern void nr_send_nak_frame(struct sock *);
128: extern void nr_kick(struct sock *);
129: extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
130: extern void nr_establish_data_link(struct sock *);
131: extern void nr_enquiry_response(struct sock *);
132: extern void nr_check_iframes_acked(struct sock *, unsigned short);
133:
134: /* nr_route.c */
135: extern void nr_rt_device_down(struct device *);
136: extern struct device *nr_dev_first(void);
137: extern struct device *nr_dev_get(ax25_address *);
138: extern int nr_rt_ioctl(unsigned int, void *);
139: extern void nr_link_failed(ax25_cb *, int);
140: extern int nr_route_frame(struct sk_buff *, ax25_cb *);
141: extern int nr_nodes_get_info(char *, char **, off_t, int, int);
142: extern int nr_neigh_get_info(char *, char **, off_t, int, int);
143: extern void nr_rt_free(void);
144:
145: /* nr_subr.c */
146: extern void nr_clear_queues(struct sock *);
147: extern void nr_frames_acked(struct sock *, unsigned short);
148: extern void nr_requeue_frames(struct sock *);
149: extern int nr_validate_nr(struct sock *, unsigned short);
150: extern int nr_in_rx_window(struct sock *, unsigned short);
151: extern void nr_write_internal(struct sock *, int);
152: extern void nr_transmit_dm(struct sk_buff *, int);
153:
154: /* nr_timer.c */
155: extern void nr_set_timer(struct sock *);
156:
157: /* sysctl_net_netrom.c */
158: extern void nr_register_sysctl(void);
159: extern void nr_unregister_sysctl(void);
160:
161: /* nr_loopback.c */
162: extern void nr_loopback_init(void);
163: extern void nr_loopback_clear(void);
164: extern int nr_loopback_queue(struct sk_buff *);
165:
166: #endif
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