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7#ifndef _NETROM_H
8#define _NETROM_H
9
10#include <linux/netrom.h>
11#include <linux/list.h>
12#include <linux/slab.h>
13#include <net/sock.h>
14
15#define NR_NETWORK_LEN 15
16#define NR_TRANSPORT_LEN 5
17
18#define NR_PROTO_IP 0x0C
19
20#define NR_PROTOEXT 0x00
21#define NR_CONNREQ 0x01
22#define NR_CONNACK 0x02
23#define NR_DISCREQ 0x03
24#define NR_DISCACK 0x04
25#define NR_INFO 0x05
26#define NR_INFOACK 0x06
27#define NR_RESET 0x07
28
29#define NR_CHOKE_FLAG 0x80
30#define NR_NAK_FLAG 0x40
31#define NR_MORE_FLAG 0x20
32
33
34enum {
35 NR_STATE_0,
36 NR_STATE_1,
37 NR_STATE_2,
38 NR_STATE_3
39};
40
41#define NR_COND_ACK_PENDING 0x01
42#define NR_COND_REJECT 0x02
43#define NR_COND_PEER_RX_BUSY 0x04
44#define NR_COND_OWN_RX_BUSY 0x08
45
46#define NR_DEFAULT_T1 120000
47#define NR_DEFAULT_T2 5000
48#define NR_DEFAULT_N2 3
49#define NR_DEFAULT_T4 180000
50#define NR_DEFAULT_IDLE 0
51#define NR_DEFAULT_WINDOW 4
52#define NR_DEFAULT_OBS 6
53#define NR_DEFAULT_QUAL 10
54#define NR_DEFAULT_TTL 16
55#define NR_DEFAULT_ROUTING 1
56#define NR_DEFAULT_FAILS 2
57#define NR_DEFAULT_RESET 0
58
59#define NR_MODULUS 256
60#define NR_MAX_WINDOW_SIZE 127
61#define NR_MAX_PACKET_SIZE 236
62
63struct nr_sock {
64 struct sock sock;
65 ax25_address user_addr, source_addr, dest_addr;
66 struct net_device *device;
67 unsigned char my_index, my_id;
68 unsigned char your_index, your_id;
69 unsigned char state, condition, bpqext, window;
70 unsigned short vs, vr, va, vl;
71 unsigned char n2, n2count;
72 unsigned long t1, t2, t4, idle;
73 unsigned short fraglen;
74 struct timer_list t1timer;
75 struct timer_list t2timer;
76 struct timer_list t4timer;
77 struct timer_list idletimer;
78 struct sk_buff_head ack_queue;
79 struct sk_buff_head reseq_queue;
80 struct sk_buff_head frag_queue;
81};
82
83#define nr_sk(sk) ((struct nr_sock *)(sk))
84
85struct nr_neigh {
86 struct hlist_node neigh_node;
87 ax25_address callsign;
88 ax25_digi *digipeat;
89 ax25_cb *ax25;
90 struct net_device *dev;
91 unsigned char quality;
92 unsigned char locked;
93 unsigned short count;
94 unsigned int number;
95 unsigned char failed;
96 atomic_t refcount;
97};
98
99struct nr_route {
100 unsigned char quality;
101 unsigned char obs_count;
102 struct nr_neigh *neighbour;
103};
104
105struct nr_node {
106 struct hlist_node node_node;
107 ax25_address callsign;
108 char mnemonic[7];
109 unsigned char which;
110 unsigned char count;
111 struct nr_route routes[3];
112 atomic_t refcount;
113 spinlock_t node_lock;
114};
115
116
117
118
119
120#define nr_node_hold(__nr_node) \
121 atomic_inc(&((__nr_node)->refcount))
122
123static __inline__ void nr_node_put(struct nr_node *nr_node)
124{
125 if (atomic_dec_and_test(&nr_node->refcount)) {
126 kfree(nr_node);
127 }
128}
129
130#define nr_neigh_hold(__nr_neigh) \
131 atomic_inc(&((__nr_neigh)->refcount))
132
133static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
134{
135 if (atomic_dec_and_test(&nr_neigh->refcount)) {
136 if (nr_neigh->ax25)
137 ax25_cb_put(nr_neigh->ax25);
138 kfree(nr_neigh->digipeat);
139 kfree(nr_neigh);
140 }
141}
142
143
144
145static __inline__ void nr_node_lock(struct nr_node *nr_node)
146{
147 nr_node_hold(nr_node);
148 spin_lock_bh(&nr_node->node_lock);
149}
150
151static __inline__ void nr_node_unlock(struct nr_node *nr_node)
152{
153 spin_unlock_bh(&nr_node->node_lock);
154 nr_node_put(nr_node);
155}
156
157#define nr_neigh_for_each(__nr_neigh, list) \
158 hlist_for_each_entry(__nr_neigh, list, neigh_node)
159
160#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
161 hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
162
163#define nr_node_for_each(__nr_node, list) \
164 hlist_for_each_entry(__nr_node, list, node_node)
165
166#define nr_node_for_each_safe(__nr_node, node2, list) \
167 hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
168
169
170
171
172
173extern int sysctl_netrom_default_path_quality;
174extern int sysctl_netrom_obsolescence_count_initialiser;
175extern int sysctl_netrom_network_ttl_initialiser;
176extern int sysctl_netrom_transport_timeout;
177extern int sysctl_netrom_transport_maximum_tries;
178extern int sysctl_netrom_transport_acknowledge_delay;
179extern int sysctl_netrom_transport_busy_delay;
180extern int sysctl_netrom_transport_requested_window_size;
181extern int sysctl_netrom_transport_no_activity_timeout;
182extern int sysctl_netrom_routing_control;
183extern int sysctl_netrom_link_fails_count;
184extern int sysctl_netrom_reset_circuit;
185
186int nr_rx_frame(struct sk_buff *, struct net_device *);
187void nr_destroy_socket(struct sock *);
188
189
190int nr_rx_ip(struct sk_buff *, struct net_device *);
191void nr_setup(struct net_device *);
192
193
194int nr_process_rx_frame(struct sock *, struct sk_buff *);
195
196
197void nr_loopback_init(void);
198void nr_loopback_clear(void);
199int nr_loopback_queue(struct sk_buff *);
200
201
202void nr_output(struct sock *, struct sk_buff *);
203void nr_send_nak_frame(struct sock *);
204void nr_kick(struct sock *);
205void nr_transmit_buffer(struct sock *, struct sk_buff *);
206void nr_establish_data_link(struct sock *);
207void nr_enquiry_response(struct sock *);
208void nr_check_iframes_acked(struct sock *, unsigned short);
209
210
211void nr_rt_device_down(struct net_device *);
212struct net_device *nr_dev_first(void);
213struct net_device *nr_dev_get(ax25_address *);
214int nr_rt_ioctl(unsigned int, void __user *);
215void nr_link_failed(ax25_cb *, int);
216int nr_route_frame(struct sk_buff *, ax25_cb *);
217extern const struct file_operations nr_nodes_fops;
218extern const struct file_operations nr_neigh_fops;
219void nr_rt_free(void);
220
221
222void nr_clear_queues(struct sock *);
223void nr_frames_acked(struct sock *, unsigned short);
224void nr_requeue_frames(struct sock *);
225int nr_validate_nr(struct sock *, unsigned short);
226int nr_in_rx_window(struct sock *, unsigned short);
227void nr_write_internal(struct sock *, int);
228
229void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
230
231
232
233
234
235#define nr_transmit_refusal(skb, mine) \
236do { \
237 __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
238} while (0)
239
240
241
242
243
244#define nr_transmit_reset(skb, mine) \
245do { \
246 __nr_transmit_reply((skb), (mine), NR_RESET); \
247} while (0)
248
249void nr_disconnect(struct sock *, int);
250
251
252void nr_init_timers(struct sock *sk);
253void nr_start_heartbeat(struct sock *);
254void nr_start_t1timer(struct sock *);
255void nr_start_t2timer(struct sock *);
256void nr_start_t4timer(struct sock *);
257void nr_start_idletimer(struct sock *);
258void nr_stop_heartbeat(struct sock *);
259void nr_stop_t1timer(struct sock *);
260void nr_stop_t2timer(struct sock *);
261void nr_stop_t4timer(struct sock *);
262void nr_stop_idletimer(struct sock *);
263int nr_t1timer_running(struct sock *);
264
265
266void nr_register_sysctl(void);
267void nr_unregister_sysctl(void);
268
269#endif
270
