1 /*
2 * IPX proc routines
3 *
4 * Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
5 */
6
7 #include <linux/init.h>
8 #ifdef CONFIG_PROC_FS
9 #include <linux/proc_fs.h>
10 #include <linux/spinlock.h>
11 #include <linux/seq_file.h>
12 #include <net/net_namespace.h>
13 #include <net/tcp_states.h>
14 #include <net/ipx.h>
15
ipx_get_interface_idx(loff_t pos)16 static __inline__ struct ipx_interface *ipx_get_interface_idx(loff_t pos)
17 {
18 struct ipx_interface *i;
19
20 list_for_each_entry(i, &ipx_interfaces, node)
21 if (!pos--)
22 goto out;
23 i = NULL;
24 out:
25 return i;
26 }
27
ipx_interfaces_next(struct ipx_interface * i)28 static struct ipx_interface *ipx_interfaces_next(struct ipx_interface *i)
29 {
30 struct ipx_interface *rc = NULL;
31
32 if (i->node.next != &ipx_interfaces)
33 rc = list_entry(i->node.next, struct ipx_interface, node);
34 return rc;
35 }
36
ipx_seq_interface_start(struct seq_file * seq,loff_t * pos)37 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
38 {
39 loff_t l = *pos;
40
41 spin_lock_bh(&ipx_interfaces_lock);
42 return l ? ipx_get_interface_idx(--l) : SEQ_START_TOKEN;
43 }
44
ipx_seq_interface_next(struct seq_file * seq,void * v,loff_t * pos)45 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
46 {
47 struct ipx_interface *i;
48
49 ++*pos;
50 if (v == SEQ_START_TOKEN)
51 i = ipx_interfaces_head();
52 else
53 i = ipx_interfaces_next(v);
54 return i;
55 }
56
ipx_seq_interface_stop(struct seq_file * seq,void * v)57 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
58 {
59 spin_unlock_bh(&ipx_interfaces_lock);
60 }
61
ipx_seq_interface_show(struct seq_file * seq,void * v)62 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
63 {
64 struct ipx_interface *i;
65
66 if (v == SEQ_START_TOKEN) {
67 seq_puts(seq, "Network Node_Address Primary Device "
68 "Frame_Type");
69 #ifdef IPX_REFCNT_DEBUG
70 seq_puts(seq, " refcnt");
71 #endif
72 seq_puts(seq, "\n");
73 goto out;
74 }
75
76 i = v;
77 seq_printf(seq, "%08lX ", (unsigned long int)ntohl(i->if_netnum));
78 seq_printf(seq, "%02X%02X%02X%02X%02X%02X ",
79 i->if_node[0], i->if_node[1], i->if_node[2],
80 i->if_node[3], i->if_node[4], i->if_node[5]);
81 seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
82 seq_printf(seq, "%-11s", ipx_device_name(i));
83 seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
84 #ifdef IPX_REFCNT_DEBUG
85 seq_printf(seq, "%6d", atomic_read(&i->refcnt));
86 #endif
87 seq_puts(seq, "\n");
88 out:
89 return 0;
90 }
91
ipx_routes_head(void)92 static struct ipx_route *ipx_routes_head(void)
93 {
94 struct ipx_route *rc = NULL;
95
96 if (!list_empty(&ipx_routes))
97 rc = list_entry(ipx_routes.next, struct ipx_route, node);
98 return rc;
99 }
100
ipx_routes_next(struct ipx_route * r)101 static struct ipx_route *ipx_routes_next(struct ipx_route *r)
102 {
103 struct ipx_route *rc = NULL;
104
105 if (r->node.next != &ipx_routes)
106 rc = list_entry(r->node.next, struct ipx_route, node);
107 return rc;
108 }
109
ipx_get_route_idx(loff_t pos)110 static __inline__ struct ipx_route *ipx_get_route_idx(loff_t pos)
111 {
112 struct ipx_route *r;
113
114 list_for_each_entry(r, &ipx_routes, node)
115 if (!pos--)
116 goto out;
117 r = NULL;
118 out:
119 return r;
120 }
121
ipx_seq_route_start(struct seq_file * seq,loff_t * pos)122 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
123 {
124 loff_t l = *pos;
125 read_lock_bh(&ipx_routes_lock);
126 return l ? ipx_get_route_idx(--l) : SEQ_START_TOKEN;
127 }
128
ipx_seq_route_next(struct seq_file * seq,void * v,loff_t * pos)129 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
130 {
131 struct ipx_route *r;
132
133 ++*pos;
134 if (v == SEQ_START_TOKEN)
135 r = ipx_routes_head();
136 else
137 r = ipx_routes_next(v);
138 return r;
139 }
140
ipx_seq_route_stop(struct seq_file * seq,void * v)141 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
142 {
143 read_unlock_bh(&ipx_routes_lock);
144 }
145
ipx_seq_route_show(struct seq_file * seq,void * v)146 static int ipx_seq_route_show(struct seq_file *seq, void *v)
147 {
148 struct ipx_route *rt;
149
150 if (v == SEQ_START_TOKEN) {
151 seq_puts(seq, "Network Router_Net Router_Node\n");
152 goto out;
153 }
154 rt = v;
155 seq_printf(seq, "%08lX ", (unsigned long int)ntohl(rt->ir_net));
156 if (rt->ir_routed)
157 seq_printf(seq, "%08lX %02X%02X%02X%02X%02X%02X\n",
158 (long unsigned int)ntohl(rt->ir_intrfc->if_netnum),
159 rt->ir_router_node[0], rt->ir_router_node[1],
160 rt->ir_router_node[2], rt->ir_router_node[3],
161 rt->ir_router_node[4], rt->ir_router_node[5]);
162 else
163 seq_puts(seq, "Directly Connected\n");
164 out:
165 return 0;
166 }
167
ipx_get_socket_idx(loff_t pos)168 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
169 {
170 struct sock *s = NULL;
171 struct hlist_node *node;
172 struct ipx_interface *i;
173
174 list_for_each_entry(i, &ipx_interfaces, node) {
175 spin_lock_bh(&i->if_sklist_lock);
176 sk_for_each(s, node, &i->if_sklist) {
177 if (!pos)
178 break;
179 --pos;
180 }
181 spin_unlock_bh(&i->if_sklist_lock);
182 if (!pos) {
183 if (node)
184 goto found;
185 break;
186 }
187 }
188 s = NULL;
189 found:
190 return s;
191 }
192
ipx_seq_socket_start(struct seq_file * seq,loff_t * pos)193 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
194 {
195 loff_t l = *pos;
196
197 spin_lock_bh(&ipx_interfaces_lock);
198 return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
199 }
200
ipx_seq_socket_next(struct seq_file * seq,void * v,loff_t * pos)201 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
202 {
203 struct sock* sk, *next;
204 struct ipx_interface *i;
205 struct ipx_sock *ipxs;
206
207 ++*pos;
208 if (v == SEQ_START_TOKEN) {
209 sk = NULL;
210 i = ipx_interfaces_head();
211 if (!i)
212 goto out;
213 sk = sk_head(&i->if_sklist);
214 if (sk)
215 spin_lock_bh(&i->if_sklist_lock);
216 goto out;
217 }
218 sk = v;
219 next = sk_next(sk);
220 if (next) {
221 sk = next;
222 goto out;
223 }
224 ipxs = ipx_sk(sk);
225 i = ipxs->intrfc;
226 spin_unlock_bh(&i->if_sklist_lock);
227 sk = NULL;
228 for (;;) {
229 i = ipx_interfaces_next(i);
230 if (!i)
231 break;
232 spin_lock_bh(&i->if_sklist_lock);
233 if (!hlist_empty(&i->if_sklist)) {
234 sk = sk_head(&i->if_sklist);
235 break;
236 }
237 spin_unlock_bh(&i->if_sklist_lock);
238 }
239 out:
240 return sk;
241 }
242
ipx_seq_socket_show(struct seq_file * seq,void * v)243 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
244 {
245 struct sock *s;
246 struct ipx_sock *ipxs;
247
248 if (v == SEQ_START_TOKEN) {
249 #ifdef CONFIG_IPX_INTERN
250 seq_puts(seq, "Local_Address "
251 "Remote_Address Tx_Queue "
252 "Rx_Queue State Uid\n");
253 #else
254 seq_puts(seq, "Local_Address Remote_Address "
255 "Tx_Queue Rx_Queue State Uid\n");
256 #endif
257 goto out;
258 }
259
260 s = v;
261 ipxs = ipx_sk(s);
262 #ifdef CONFIG_IPX_INTERN
263 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
264 (unsigned long)ntohl(ipxs->intrfc->if_netnum),
265 ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
266 ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
267 #else
268 seq_printf(seq, "%08lX:%04X ", (unsigned long) ntohl(ipxs->intrfc->if_netnum),
269 ntohs(ipxs->port));
270 #endif /* CONFIG_IPX_INTERN */
271 if (s->sk_state != TCP_ESTABLISHED)
272 seq_printf(seq, "%-28s", "Not_Connected");
273 else {
274 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
275 (unsigned long)ntohl(ipxs->dest_addr.net),
276 ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
277 ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
278 ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
279 ntohs(ipxs->dest_addr.sock));
280 }
281
282 seq_printf(seq, "%08X %08X %02X %03d\n",
283 atomic_read(&s->sk_wmem_alloc),
284 atomic_read(&s->sk_rmem_alloc),
285 s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
286 out:
287 return 0;
288 }
289
290 static const struct seq_operations ipx_seq_interface_ops = {
291 .start = ipx_seq_interface_start,
292 .next = ipx_seq_interface_next,
293 .stop = ipx_seq_interface_stop,
294 .show = ipx_seq_interface_show,
295 };
296
297 static const struct seq_operations ipx_seq_route_ops = {
298 .start = ipx_seq_route_start,
299 .next = ipx_seq_route_next,
300 .stop = ipx_seq_route_stop,
301 .show = ipx_seq_route_show,
302 };
303
304 static const struct seq_operations ipx_seq_socket_ops = {
305 .start = ipx_seq_socket_start,
306 .next = ipx_seq_socket_next,
307 .stop = ipx_seq_interface_stop,
308 .show = ipx_seq_socket_show,
309 };
310
ipx_seq_route_open(struct inode * inode,struct file * file)311 static int ipx_seq_route_open(struct inode *inode, struct file *file)
312 {
313 return seq_open(file, &ipx_seq_route_ops);
314 }
315
ipx_seq_interface_open(struct inode * inode,struct file * file)316 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
317 {
318 return seq_open(file, &ipx_seq_interface_ops);
319 }
320
ipx_seq_socket_open(struct inode * inode,struct file * file)321 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
322 {
323 return seq_open(file, &ipx_seq_socket_ops);
324 }
325
326 static const struct file_operations ipx_seq_interface_fops = {
327 .owner = THIS_MODULE,
328 .open = ipx_seq_interface_open,
329 .read = seq_read,
330 .llseek = seq_lseek,
331 .release = seq_release,
332 };
333
334 static const struct file_operations ipx_seq_route_fops = {
335 .owner = THIS_MODULE,
336 .open = ipx_seq_route_open,
337 .read = seq_read,
338 .llseek = seq_lseek,
339 .release = seq_release,
340 };
341
342 static const struct file_operations ipx_seq_socket_fops = {
343 .owner = THIS_MODULE,
344 .open = ipx_seq_socket_open,
345 .read = seq_read,
346 .llseek = seq_lseek,
347 .release = seq_release,
348 };
349
350 static struct proc_dir_entry *ipx_proc_dir;
351
ipx_proc_init(void)352 int __init ipx_proc_init(void)
353 {
354 struct proc_dir_entry *p;
355 int rc = -ENOMEM;
356
357 ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
358
359 if (!ipx_proc_dir)
360 goto out;
361 p = proc_create("interface", S_IRUGO,
362 ipx_proc_dir, &ipx_seq_interface_fops);
363 if (!p)
364 goto out_interface;
365
366 p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
367 if (!p)
368 goto out_route;
369
370 p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
371 if (!p)
372 goto out_socket;
373
374 rc = 0;
375 out:
376 return rc;
377 out_socket:
378 remove_proc_entry("route", ipx_proc_dir);
379 out_route:
380 remove_proc_entry("interface", ipx_proc_dir);
381 out_interface:
382 remove_proc_entry("ipx", init_net.proc_net);
383 goto out;
384 }
385
ipx_proc_exit(void)386 void __exit ipx_proc_exit(void)
387 {
388 remove_proc_entry("interface", ipx_proc_dir);
389 remove_proc_entry("route", ipx_proc_dir);
390 remove_proc_entry("socket", ipx_proc_dir);
391 remove_proc_entry("ipx", init_net.proc_net);
392 }
393
394 #else /* CONFIG_PROC_FS */
395
ipx_proc_init(void)396 int __init ipx_proc_init(void)
397 {
398 return 0;
399 }
400
ipx_proc_exit(void)401 void __exit ipx_proc_exit(void)
402 {
403 }
404
405 #endif /* CONFIG_PROC_FS */
406