1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * Declarations of NET/ROM type objects. 2 * Declarations of NET/ROM type objects.
4 * 3 *
5 * Jonathan Naylor G4KLX 9/4/95 4 * Jonathan Naylor G4KLX 9/4/95
6 */ 5 */
7 6
8 #ifndef _NETROM_H 7 #ifndef _NETROM_H
9 #define _NETROM_H 8 #define _NETROM_H
10 9
11 #include <linux/netrom.h> 10 #include <linux/netrom.h>
12 #include <linux/list.h> 11 #include <linux/list.h>
13 #include <linux/slab.h> 12 #include <linux/slab.h>
14 #include <net/sock.h> 13 #include <net/sock.h>
15 #include <linux/refcount.h> <<
16 #include <linux/seq_file.h> <<
17 #include <net/ax25.h> <<
18 14
19 #define NR_NETWORK_LEN 15 15 #define NR_NETWORK_LEN 15
20 #define NR_TRANSPORT_LEN 5 16 #define NR_TRANSPORT_LEN 5
21 17
22 #define NR_PROTO_IP 0x0C 18 #define NR_PROTO_IP 0x0C
23 19
24 #define NR_PROTOEXT 0x00 20 #define NR_PROTOEXT 0x00
25 #define NR_CONNREQ 0x01 21 #define NR_CONNREQ 0x01
26 #define NR_CONNACK 0x02 22 #define NR_CONNACK 0x02
27 #define NR_DISCREQ 0x03 23 #define NR_DISCREQ 0x03
28 #define NR_DISCACK 0x04 24 #define NR_DISCACK 0x04
29 #define NR_INFO 0x05 25 #define NR_INFO 0x05
30 #define NR_INFOACK 0x06 26 #define NR_INFOACK 0x06
31 #define NR_RESET 0x07 27 #define NR_RESET 0x07
32 28
33 #define NR_CHOKE_FLAG 0x80 29 #define NR_CHOKE_FLAG 0x80
34 #define NR_NAK_FLAG 0x40 30 #define NR_NAK_FLAG 0x40
35 #define NR_MORE_FLAG 0x20 31 #define NR_MORE_FLAG 0x20
36 32
37 /* Define Link State constants. */ 33 /* Define Link State constants. */
38 enum { 34 enum {
39 NR_STATE_0, 35 NR_STATE_0,
40 NR_STATE_1, 36 NR_STATE_1,
41 NR_STATE_2, 37 NR_STATE_2,
42 NR_STATE_3 38 NR_STATE_3
43 }; 39 };
44 40
45 #define NR_COND_ACK_PENDING 0x01 41 #define NR_COND_ACK_PENDING 0x01
46 #define NR_COND_REJECT 0x02 42 #define NR_COND_REJECT 0x02
47 #define NR_COND_PEER_RX_BUSY 0x04 43 #define NR_COND_PEER_RX_BUSY 0x04
48 #define NR_COND_OWN_RX_BUSY 0x08 44 #define NR_COND_OWN_RX_BUSY 0x08
49 45
50 #define NR_DEFAULT_T1 120000 46 #define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */
51 #define NR_DEFAULT_T2 5000 47 #define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */
52 #define NR_DEFAULT_N2 3 48 #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
53 #define NR_DEFAULT_T4 180000 49 #define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */
54 #define NR_DEFAULT_IDLE 0 50 #define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */
55 #define NR_DEFAULT_WINDOW 4 51 #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
56 #define NR_DEFAULT_OBS 6 52 #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
57 #define NR_DEFAULT_QUAL 10 53 #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
58 #define NR_DEFAULT_TTL 16 54 #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
59 #define NR_DEFAULT_ROUTING 1 55 #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
60 #define NR_DEFAULT_FAILS 2 56 #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
61 #define NR_DEFAULT_RESET 0 57 #define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
62 58
63 #define NR_MODULUS 256 59 #define NR_MODULUS 256
64 #define NR_MAX_WINDOW_SIZE 127 60 #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
65 #define NR_MAX_PACKET_SIZE 236 61 #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
66 62
67 struct nr_sock { 63 struct nr_sock {
68 struct sock sock; 64 struct sock sock;
69 ax25_address user_addr, sou 65 ax25_address user_addr, source_addr, dest_addr;
70 struct net_device *devic 66 struct net_device *device;
71 unsigned char my_index, my 67 unsigned char my_index, my_id;
72 unsigned char your_index, yo 68 unsigned char your_index, your_id;
73 unsigned char state, conditi 69 unsigned char state, condition, bpqext, window;
74 unsigned short vs, vr, va, vl 70 unsigned short vs, vr, va, vl;
75 unsigned char n2, n2count; 71 unsigned char n2, n2count;
76 unsigned long t1, t2, t4, id 72 unsigned long t1, t2, t4, idle;
77 unsigned short fraglen; 73 unsigned short fraglen;
78 struct timer_list t1timer; 74 struct timer_list t1timer;
79 struct timer_list t2timer; 75 struct timer_list t2timer;
80 struct timer_list t4timer; 76 struct timer_list t4timer;
81 struct timer_list idletimer; 77 struct timer_list idletimer;
82 struct sk_buff_head ack_queue; 78 struct sk_buff_head ack_queue;
83 struct sk_buff_head reseq_queue; 79 struct sk_buff_head reseq_queue;
84 struct sk_buff_head frag_queue; 80 struct sk_buff_head frag_queue;
85 }; 81 };
86 82
87 #define nr_sk(sk) ((struct nr_sock *)(sk)) 83 #define nr_sk(sk) ((struct nr_sock *)(sk))
88 84
89 struct nr_neigh { 85 struct nr_neigh {
90 struct hlist_node neigh_node; 86 struct hlist_node neigh_node;
91 ax25_address callsign; 87 ax25_address callsign;
92 ax25_digi *digipeat; 88 ax25_digi *digipeat;
93 ax25_cb *ax25; 89 ax25_cb *ax25;
94 struct net_device *dev; 90 struct net_device *dev;
95 unsigned char quality; 91 unsigned char quality;
96 unsigned char locked; 92 unsigned char locked;
97 unsigned short count; 93 unsigned short count;
98 unsigned int number; 94 unsigned int number;
99 unsigned char failed; 95 unsigned char failed;
100 refcount_t refcount; !! 96 atomic_t refcount;
101 }; 97 };
102 98
103 struct nr_route { 99 struct nr_route {
104 unsigned char quality; 100 unsigned char quality;
105 unsigned char obs_count; 101 unsigned char obs_count;
106 struct nr_neigh *neighbour; 102 struct nr_neigh *neighbour;
107 }; 103 };
108 104
109 struct nr_node { 105 struct nr_node {
110 struct hlist_node node_node; 106 struct hlist_node node_node;
111 ax25_address callsign; 107 ax25_address callsign;
112 char mnemonic[7]; 108 char mnemonic[7];
113 unsigned char which; 109 unsigned char which;
114 unsigned char count; 110 unsigned char count;
115 struct nr_route routes[3]; 111 struct nr_route routes[3];
116 refcount_t refcount; !! 112 atomic_t refcount;
117 spinlock_t node_lock; 113 spinlock_t node_lock;
118 }; 114 };
119 115
120 /********************************************* 116 /*********************************************************************
121 * nr_node & nr_neigh lists, refcounting 117 * nr_node & nr_neigh lists, refcounting and locking
122 ********************************************* 118 *********************************************************************/
123 119
124 #define nr_node_hold(__nr_node) \ 120 #define nr_node_hold(__nr_node) \
125 refcount_inc(&((__nr_node)->refcount)) !! 121 atomic_inc(&((__nr_node)->refcount))
126 122
127 static __inline__ void nr_node_put(struct nr_n 123 static __inline__ void nr_node_put(struct nr_node *nr_node)
128 { 124 {
129 if (refcount_dec_and_test(&nr_node->re !! 125 if (atomic_dec_and_test(&nr_node->refcount)) {
130 kfree(nr_node); 126 kfree(nr_node);
131 } 127 }
132 } 128 }
133 129
134 #define nr_neigh_hold(__nr_neigh) \ 130 #define nr_neigh_hold(__nr_neigh) \
135 refcount_inc(&((__nr_neigh)->refcount) !! 131 atomic_inc(&((__nr_neigh)->refcount))
136 132
137 static __inline__ void nr_neigh_put(struct nr_ 133 static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
138 { 134 {
139 if (refcount_dec_and_test(&nr_neigh->r !! 135 if (atomic_dec_and_test(&nr_neigh->refcount)) {
140 if (nr_neigh->ax25) 136 if (nr_neigh->ax25)
141 ax25_cb_put(nr_neigh-> 137 ax25_cb_put(nr_neigh->ax25);
142 kfree(nr_neigh->digipeat); 138 kfree(nr_neigh->digipeat);
143 kfree(nr_neigh); 139 kfree(nr_neigh);
144 } 140 }
145 } 141 }
146 142
147 /* nr_node_lock and nr_node_unlock also hold/p 143 /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
148 */ 144 */
149 static __inline__ void nr_node_lock(struct nr_ 145 static __inline__ void nr_node_lock(struct nr_node *nr_node)
150 { 146 {
151 nr_node_hold(nr_node); 147 nr_node_hold(nr_node);
152 spin_lock_bh(&nr_node->node_lock); 148 spin_lock_bh(&nr_node->node_lock);
153 } 149 }
154 150
155 static __inline__ void nr_node_unlock(struct n 151 static __inline__ void nr_node_unlock(struct nr_node *nr_node)
156 { 152 {
157 spin_unlock_bh(&nr_node->node_lock); 153 spin_unlock_bh(&nr_node->node_lock);
158 nr_node_put(nr_node); 154 nr_node_put(nr_node);
159 } 155 }
160 156
161 #define nr_neigh_for_each(__nr_neigh, list) \ 157 #define nr_neigh_for_each(__nr_neigh, list) \
162 hlist_for_each_entry(__nr_neigh, list, 158 hlist_for_each_entry(__nr_neigh, list, neigh_node)
163 159
164 #define nr_neigh_for_each_safe(__nr_neigh, nod 160 #define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
165 hlist_for_each_entry_safe(__nr_neigh, 161 hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
166 162
167 #define nr_node_for_each(__nr_node, list) \ 163 #define nr_node_for_each(__nr_node, list) \
168 hlist_for_each_entry(__nr_node, list, 164 hlist_for_each_entry(__nr_node, list, node_node)
169 165
170 #define nr_node_for_each_safe(__nr_node, node2 166 #define nr_node_for_each_safe(__nr_node, node2, list) \
171 hlist_for_each_entry_safe(__nr_node, n 167 hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
172 168
173 169
174 /********************************************* 170 /*********************************************************************/
175 171
176 /* af_netrom.c */ 172 /* af_netrom.c */
177 extern int sysctl_netrom_default_path_quality 173 extern int sysctl_netrom_default_path_quality;
178 extern int sysctl_netrom_obsolescence_count_i 174 extern int sysctl_netrom_obsolescence_count_initialiser;
179 extern int sysctl_netrom_network_ttl_initiali 175 extern int sysctl_netrom_network_ttl_initialiser;
180 extern int sysctl_netrom_transport_timeout; 176 extern int sysctl_netrom_transport_timeout;
181 extern int sysctl_netrom_transport_maximum_tr 177 extern int sysctl_netrom_transport_maximum_tries;
182 extern int sysctl_netrom_transport_acknowledg 178 extern int sysctl_netrom_transport_acknowledge_delay;
183 extern int sysctl_netrom_transport_busy_delay 179 extern int sysctl_netrom_transport_busy_delay;
184 extern int sysctl_netrom_transport_requested_ 180 extern int sysctl_netrom_transport_requested_window_size;
185 extern int sysctl_netrom_transport_no_activit 181 extern int sysctl_netrom_transport_no_activity_timeout;
186 extern int sysctl_netrom_routing_control; 182 extern int sysctl_netrom_routing_control;
187 extern int sysctl_netrom_link_fails_count; 183 extern int sysctl_netrom_link_fails_count;
188 extern int sysctl_netrom_reset_circuit; 184 extern int sysctl_netrom_reset_circuit;
189 185
190 int nr_rx_frame(struct sk_buff *, struct net_d 186 int nr_rx_frame(struct sk_buff *, struct net_device *);
191 void nr_destroy_socket(struct sock *); 187 void nr_destroy_socket(struct sock *);
192 188
193 /* nr_dev.c */ 189 /* nr_dev.c */
194 int nr_rx_ip(struct sk_buff *, struct net_devi 190 int nr_rx_ip(struct sk_buff *, struct net_device *);
195 void nr_setup(struct net_device *); 191 void nr_setup(struct net_device *);
196 192
197 /* nr_in.c */ 193 /* nr_in.c */
198 int nr_process_rx_frame(struct sock *, struct 194 int nr_process_rx_frame(struct sock *, struct sk_buff *);
199 195
200 /* nr_loopback.c */ 196 /* nr_loopback.c */
201 void nr_loopback_init(void); 197 void nr_loopback_init(void);
202 void nr_loopback_clear(void); 198 void nr_loopback_clear(void);
203 int nr_loopback_queue(struct sk_buff *); 199 int nr_loopback_queue(struct sk_buff *);
204 200
205 /* nr_out.c */ 201 /* nr_out.c */
206 void nr_output(struct sock *, struct sk_buff * 202 void nr_output(struct sock *, struct sk_buff *);
207 void nr_send_nak_frame(struct sock *); 203 void nr_send_nak_frame(struct sock *);
208 void nr_kick(struct sock *); 204 void nr_kick(struct sock *);
209 void nr_transmit_buffer(struct sock *, struct 205 void nr_transmit_buffer(struct sock *, struct sk_buff *);
210 void nr_establish_data_link(struct sock *); 206 void nr_establish_data_link(struct sock *);
211 void nr_enquiry_response(struct sock *); 207 void nr_enquiry_response(struct sock *);
212 void nr_check_iframes_acked(struct sock *, uns 208 void nr_check_iframes_acked(struct sock *, unsigned short);
213 209
214 /* nr_route.c */ 210 /* nr_route.c */
215 void nr_rt_device_down(struct net_device *); 211 void nr_rt_device_down(struct net_device *);
216 struct net_device *nr_dev_first(void); 212 struct net_device *nr_dev_first(void);
217 struct net_device *nr_dev_get(ax25_address *); 213 struct net_device *nr_dev_get(ax25_address *);
218 int nr_rt_ioctl(unsigned int, void __user *); 214 int nr_rt_ioctl(unsigned int, void __user *);
219 void nr_link_failed(ax25_cb *, int); 215 void nr_link_failed(ax25_cb *, int);
220 int nr_route_frame(struct sk_buff *, ax25_cb * 216 int nr_route_frame(struct sk_buff *, ax25_cb *);
221 extern const struct seq_operations nr_node_seq !! 217 extern const struct file_operations nr_nodes_fops;
222 extern const struct seq_operations nr_neigh_se !! 218 extern const struct file_operations nr_neigh_fops;
223 void nr_rt_free(void); 219 void nr_rt_free(void);
224 220
225 /* nr_subr.c */ 221 /* nr_subr.c */
226 void nr_clear_queues(struct sock *); 222 void nr_clear_queues(struct sock *);
227 void nr_frames_acked(struct sock *, unsigned s 223 void nr_frames_acked(struct sock *, unsigned short);
228 void nr_requeue_frames(struct sock *); 224 void nr_requeue_frames(struct sock *);
229 int nr_validate_nr(struct sock *, unsigned sho 225 int nr_validate_nr(struct sock *, unsigned short);
230 int nr_in_rx_window(struct sock *, unsigned sh 226 int nr_in_rx_window(struct sock *, unsigned short);
231 void nr_write_internal(struct sock *, int); 227 void nr_write_internal(struct sock *, int);
232 228
233 void __nr_transmit_reply(struct sk_buff *skb, 229 void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
234 230
235 /* 231 /*
236 * This routine is called when a Connect Ackno 232 * This routine is called when a Connect Acknowledge with the Choke Flag
237 * set is needed to refuse a connection. 233 * set is needed to refuse a connection.
238 */ 234 */
239 #define nr_transmit_refusal(skb, mine) 235 #define nr_transmit_refusal(skb, mine) \
240 do { 236 do { \
241 __nr_transmit_reply((skb), (mine), NR_ 237 __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
242 } while (0) 238 } while (0)
243 239
244 /* 240 /*
245 * This routine is called when we don't have a 241 * This routine is called when we don't have a circuit matching an incoming
246 * NET/ROM packet. This is an G8PZT Xrouter e 242 * NET/ROM packet. This is an G8PZT Xrouter extension.
247 */ 243 */
248 #define nr_transmit_reset(skb, mine) 244 #define nr_transmit_reset(skb, mine) \
249 do { 245 do { \
250 __nr_transmit_reply((skb), (mine), NR_ 246 __nr_transmit_reply((skb), (mine), NR_RESET); \
251 } while (0) 247 } while (0)
252 248
253 void nr_disconnect(struct sock *, int); 249 void nr_disconnect(struct sock *, int);
254 250
255 /* nr_timer.c */ 251 /* nr_timer.c */
256 void nr_init_timers(struct sock *sk); 252 void nr_init_timers(struct sock *sk);
257 void nr_start_heartbeat(struct sock *); 253 void nr_start_heartbeat(struct sock *);
258 void nr_start_t1timer(struct sock *); 254 void nr_start_t1timer(struct sock *);
259 void nr_start_t2timer(struct sock *); 255 void nr_start_t2timer(struct sock *);
260 void nr_start_t4timer(struct sock *); 256 void nr_start_t4timer(struct sock *);
261 void nr_start_idletimer(struct sock *); 257 void nr_start_idletimer(struct sock *);
262 void nr_stop_heartbeat(struct sock *); 258 void nr_stop_heartbeat(struct sock *);
263 void nr_stop_t1timer(struct sock *); 259 void nr_stop_t1timer(struct sock *);
264 void nr_stop_t2timer(struct sock *); 260 void nr_stop_t2timer(struct sock *);
265 void nr_stop_t4timer(struct sock *); 261 void nr_stop_t4timer(struct sock *);
266 void nr_stop_idletimer(struct sock *); 262 void nr_stop_idletimer(struct sock *);
267 int nr_t1timer_running(struct sock *); 263 int nr_t1timer_running(struct sock *);
268 264
269 /* sysctl_net_netrom.c */ 265 /* sysctl_net_netrom.c */
270 int nr_register_sysctl(void); !! 266 void nr_register_sysctl(void);
271 void nr_unregister_sysctl(void); 267 void nr_unregister_sysctl(void);
272 268
273 #endif 269 #endif
274 270
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