tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Declarations of NET/ROM type objects.
4 *
5 * Jonathan Naylor G4KLX 9/4/95
6 */
7
8#ifndef _NETROM_H
9#define _NETROM_H
10
11#include <linux/netrom.h>
12#include <linux/list.h>
13#include <linux/slab.h>
14#include <net/sock.h>
15#include <linux/refcount.h>
16
17#define NR_NETWORK_LEN 15
18#define NR_TRANSPORT_LEN 5
19
20#define NR_PROTO_IP 0x0C
21
22#define NR_PROTOEXT 0x00
23#define NR_CONNREQ 0x01
24#define NR_CONNACK 0x02
25#define NR_DISCREQ 0x03
26#define NR_DISCACK 0x04
27#define NR_INFO 0x05
28#define NR_INFOACK 0x06
29#define NR_RESET 0x07
30
31#define NR_CHOKE_FLAG 0x80
32#define NR_NAK_FLAG 0x40
33#define NR_MORE_FLAG 0x20
34
35/* Define Link State constants. */
36enum {
37 NR_STATE_0,
38 NR_STATE_1,
39 NR_STATE_2,
40 NR_STATE_3
41};
42
43#define NR_COND_ACK_PENDING 0x01
44#define NR_COND_REJECT 0x02
45#define NR_COND_PEER_RX_BUSY 0x04
46#define NR_COND_OWN_RX_BUSY 0x08
47
48#define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */
49#define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */
50#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
51#define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */
52#define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */
53#define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
54#define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
55#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
56#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
57#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
58#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
59#define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
60
61#define NR_MODULUS 256
62#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
63#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
64
65struct nr_sock {
66 struct sock sock;
67 ax25_address user_addr, source_addr, dest_addr;
68 struct net_device *device;
69 unsigned char my_index, my_id;
70 unsigned char your_index, your_id;
71 unsigned char state, condition, bpqext, window;
72 unsigned short vs, vr, va, vl;
73 unsigned char n2, n2count;
74 unsigned long t1, t2, t4, idle;
75 unsigned short fraglen;
76 struct timer_list t1timer;
77 struct timer_list t2timer;
78 struct timer_list t4timer;
79 struct timer_list idletimer;
80 struct sk_buff_head ack_queue;
81 struct sk_buff_head reseq_queue;
82 struct sk_buff_head frag_queue;
83};
84
85#define nr_sk(sk) ((struct nr_sock *)(sk))
86
87struct nr_neigh {
88 struct hlist_node neigh_node;
89 ax25_address callsign;
90 ax25_digi *digipeat;
91 ax25_cb *ax25;
92 struct net_device *dev;
93 unsigned char quality;
94 unsigned char locked;
95 unsigned short count;
96 unsigned int number;
97 unsigned char failed;
98 refcount_t refcount;
99};
100
101struct nr_route {
102 unsigned char quality;
103 unsigned char obs_count;
104 struct nr_neigh *neighbour;
105};
106
107struct nr_node {
108 struct hlist_node node_node;
109 ax25_address callsign;
110 char mnemonic[7];
111 unsigned char which;
112 unsigned char count;
113 struct nr_route routes[3];
114 refcount_t refcount;
115 spinlock_t node_lock;
116};
117
118/*********************************************************************
119 * nr_node & nr_neigh lists, refcounting and locking
120 *********************************************************************/
121
122#define nr_node_hold(__nr_node) \
123 refcount_inc(&((__nr_node)->refcount))
124
125static __inline__ void nr_node_put(struct nr_node *nr_node)
126{
127 if (refcount_dec_and_test(&nr_node->refcount)) {
128 kfree(nr_node);
129 }
130}
131
132#define nr_neigh_hold(__nr_neigh) \
133 refcount_inc(&((__nr_neigh)->refcount))
134
135static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
136{
137 if (refcount_dec_and_test(&nr_neigh->refcount)) {
138 if (nr_neigh->ax25)
139 ax25_cb_put(nr_neigh->ax25);
140 kfree(nr_neigh->digipeat);
141 kfree(nr_neigh);
142 }
143}
144
145/* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
146 */
147static __inline__ void nr_node_lock(struct nr_node *nr_node)
148{
149 nr_node_hold(nr_node);
150 spin_lock_bh(&nr_node->node_lock);
151}
152
153static __inline__ void nr_node_unlock(struct nr_node *nr_node)
154{
155 spin_unlock_bh(&nr_node->node_lock);
156 nr_node_put(nr_node);
157}
158
159#define nr_neigh_for_each(__nr_neigh, list) \
160 hlist_for_each_entry(__nr_neigh, list, neigh_node)
161
162#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
163 hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
164
165#define nr_node_for_each(__nr_node, list) \
166 hlist_for_each_entry(__nr_node, list, node_node)
167
168#define nr_node_for_each_safe(__nr_node, node2, list) \
169 hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
170
171
172/*********************************************************************/
173
174/* af_netrom.c */
175extern int sysctl_netrom_default_path_quality;
176extern int sysctl_netrom_obsolescence_count_initialiser;
177extern int sysctl_netrom_network_ttl_initialiser;
178extern int sysctl_netrom_transport_timeout;
179extern int sysctl_netrom_transport_maximum_tries;
180extern int sysctl_netrom_transport_acknowledge_delay;
181extern int sysctl_netrom_transport_busy_delay;
182extern int sysctl_netrom_transport_requested_window_size;
183extern int sysctl_netrom_transport_no_activity_timeout;
184extern int sysctl_netrom_routing_control;
185extern int sysctl_netrom_link_fails_count;
186extern int sysctl_netrom_reset_circuit;
187
188int nr_rx_frame(struct sk_buff *, struct net_device *);
189void nr_destroy_socket(struct sock *);
190
191/* nr_dev.c */
192int nr_rx_ip(struct sk_buff *, struct net_device *);
193void nr_setup(struct net_device *);
194
195/* nr_in.c */
196int nr_process_rx_frame(struct sock *, struct sk_buff *);
197
198/* nr_loopback.c */
199void nr_loopback_init(void);
200void nr_loopback_clear(void);
201int nr_loopback_queue(struct sk_buff *);
202
203/* nr_out.c */
204void nr_output(struct sock *, struct sk_buff *);
205void nr_send_nak_frame(struct sock *);
206void nr_kick(struct sock *);
207void nr_transmit_buffer(struct sock *, struct sk_buff *);
208void nr_establish_data_link(struct sock *);
209void nr_enquiry_response(struct sock *);
210void nr_check_iframes_acked(struct sock *, unsigned short);
211
212/* nr_route.c */
213void nr_rt_device_down(struct net_device *);
214struct net_device *nr_dev_first(void);
215struct net_device *nr_dev_get(ax25_address *);
216int nr_rt_ioctl(unsigned int, void __user *);
217void nr_link_failed(ax25_cb *, int);
218int nr_route_frame(struct sk_buff *, ax25_cb *);
219extern const struct file_operations nr_nodes_fops;
220extern const struct file_operations nr_neigh_fops;
221void nr_rt_free(void);
222
223/* nr_subr.c */
224void nr_clear_queues(struct sock *);
225void nr_frames_acked(struct sock *, unsigned short);
226void nr_requeue_frames(struct sock *);
227int nr_validate_nr(struct sock *, unsigned short);
228int nr_in_rx_window(struct sock *, unsigned short);
229void nr_write_internal(struct sock *, int);
230
231void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
232
233/*
234 * This routine is called when a Connect Acknowledge with the Choke Flag
235 * set is needed to refuse a connection.
236 */
237#define nr_transmit_refusal(skb, mine) \
238do { \
239 __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
240} while (0)
241
242/*
243 * This routine is called when we don't have a circuit matching an incoming
244 * NET/ROM packet. This is an G8PZT Xrouter extension.
245 */
246#define nr_transmit_reset(skb, mine) \
247do { \
248 __nr_transmit_reply((skb), (mine), NR_RESET); \
249} while (0)
250
251void nr_disconnect(struct sock *, int);
252
253/* nr_timer.c */
254void nr_init_timers(struct sock *sk);
255void nr_start_heartbeat(struct sock *);
256void nr_start_t1timer(struct sock *);
257void nr_start_t2timer(struct sock *);
258void nr_start_t4timer(struct sock *);
259void nr_start_idletimer(struct sock *);
260void nr_stop_heartbeat(struct sock *);
261void nr_stop_t1timer(struct sock *);
262void nr_stop_t2timer(struct sock *);
263void nr_stop_t4timer(struct sock *);
264void nr_stop_idletimer(struct sock *);
265int nr_t1timer_running(struct sock *);
266
267/* sysctl_net_netrom.c */
268void nr_register_sysctl(void);
269void nr_unregister_sysctl(void);
270
271#endif