]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /***************************************************************************** |
2 | * wanproc.c WAN Router Module. /proc filesystem interface. | |
3 | * | |
4 | * This module is completely hardware-independent and provides | |
5 | * access to the router using Linux /proc filesystem. | |
6 | * | |
7 | * Author: Gideon Hack | |
8 | * | |
9 | * Copyright: (c) 1995-1999 Sangoma Technologies Inc. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * ============================================================================ | |
16 | * Jun 02, 1999 Gideon Hack Updates for Linux 2.2.X kernels. | |
17 | * Jun 29, 1997 Alan Cox Merged with 1.0.3 vendor code | |
18 | * Jan 29, 1997 Gene Kozin v1.0.1. Implemented /proc read routines | |
19 | * Jan 30, 1997 Alan Cox Hacked around for 2.1 | |
20 | * Dec 13, 1996 Gene Kozin Initial version (based on Sangoma's WANPIPE) | |
21 | *****************************************************************************/ | |
22 | ||
1da177e4 LT |
23 | #include <linux/init.h> /* __initfunc et al. */ |
24 | #include <linux/stddef.h> /* offsetof(), etc. */ | |
25 | #include <linux/errno.h> /* return codes */ | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/wanrouter.h> /* WAN router API definitions */ | |
29 | #include <linux/seq_file.h> | |
30 | #include <linux/smp_lock.h> | |
31 | ||
32 | #include <asm/io.h> | |
33 | ||
34 | #define PROC_STATS_FORMAT "%30s: %12lu\n" | |
35 | ||
36 | /****** Defines and Macros **************************************************/ | |
37 | ||
38 | #define PROT_DECODE(prot) ((prot == WANCONFIG_FR) ? " FR" :\ | |
39 | (prot == WANCONFIG_X25) ? " X25" : \ | |
4ba6122b | 40 | (prot == WANCONFIG_PPP) ? " PPP" : \ |
1da177e4 LT |
41 | (prot == WANCONFIG_CHDLC) ? " CHDLC": \ |
42 | (prot == WANCONFIG_MPPP) ? " MPPP" : \ | |
4ba6122b | 43 | " Unknown" ) |
1da177e4 LT |
44 | |
45 | /****** Function Prototypes *************************************************/ | |
46 | ||
47 | #ifdef CONFIG_PROC_FS | |
48 | ||
49 | /* Miscellaneous */ | |
50 | ||
51 | /* | |
52 | * Structures for interfacing with the /proc filesystem. | |
53 | * Router creates its own directory /proc/net/router with the folowing | |
54 | * entries: | |
55 | * config device configuration | |
56 | * status global device statistics | |
57 | * <device> entry for each WAN device | |
58 | */ | |
59 | ||
60 | /* | |
61 | * Generic /proc/net/router/<file> file and inode operations | |
62 | */ | |
63 | ||
64 | /* | |
65 | * /proc/net/router | |
66 | */ | |
67 | ||
68 | static struct proc_dir_entry *proc_router; | |
69 | ||
70 | /* Strings */ | |
71 | ||
72 | /* | |
73 | * Interface functions | |
74 | */ | |
75 | ||
76 | /****** Proc filesystem entry points ****************************************/ | |
77 | ||
78 | /* | |
79 | * Iterator | |
80 | */ | |
81 | static void *r_start(struct seq_file *m, loff_t *pos) | |
82 | { | |
83 | struct wan_device *wandev; | |
84 | loff_t l = *pos; | |
85 | ||
86 | lock_kernel(); | |
87 | if (!l--) | |
88 | return SEQ_START_TOKEN; | |
89 | for (wandev = wanrouter_router_devlist; l-- && wandev; | |
90 | wandev = wandev->next) | |
91 | ; | |
92 | return wandev; | |
93 | } | |
94 | ||
95 | static void *r_next(struct seq_file *m, void *v, loff_t *pos) | |
96 | { | |
97 | struct wan_device *wandev = v; | |
98 | (*pos)++; | |
99 | return (v == SEQ_START_TOKEN) ? wanrouter_router_devlist : wandev->next; | |
100 | } | |
101 | ||
102 | static void r_stop(struct seq_file *m, void *v) | |
103 | { | |
104 | unlock_kernel(); | |
105 | } | |
106 | ||
107 | static int config_show(struct seq_file *m, void *v) | |
108 | { | |
109 | struct wan_device *p = v; | |
110 | if (v == SEQ_START_TOKEN) { | |
111 | seq_puts(m, "Device name | port |IRQ|DMA| mem.addr |" | |
112 | "mem.size|option1|option2|option3|option4\n"); | |
113 | return 0; | |
114 | } | |
115 | if (!p->state) | |
116 | return 0; | |
117 | seq_printf(m, "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7u\n", | |
118 | p->name, p->ioport, p->irq, p->dma, p->maddr, p->msize, | |
119 | p->hw_opt[0], p->hw_opt[1], p->hw_opt[2], p->hw_opt[3]); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static int status_show(struct seq_file *m, void *v) | |
124 | { | |
125 | struct wan_device *p = v; | |
126 | if (v == SEQ_START_TOKEN) { | |
127 | seq_puts(m, "Device name |protocol|station|interface|" | |
128 | "clocking|baud rate| MTU |ndev|link state\n"); | |
129 | return 0; | |
130 | } | |
131 | if (!p->state) | |
132 | return 0; | |
133 | seq_printf(m, "%-15s|%-8s| %-7s| %-9s|%-8s|%9u|%5u|%3u |", | |
134 | p->name, | |
135 | PROT_DECODE(p->config_id), | |
136 | p->config_id == WANCONFIG_FR ? | |
137 | (p->station ? "Node" : "CPE") : | |
138 | (p->config_id == WANCONFIG_X25 ? | |
139 | (p->station ? "DCE" : "DTE") : | |
140 | ("N/A")), | |
141 | p->interface ? "V.35" : "RS-232", | |
142 | p->clocking ? "internal" : "external", | |
143 | p->bps, | |
144 | p->mtu, | |
145 | p->ndev); | |
146 | ||
147 | switch (p->state) { | |
148 | case WAN_UNCONFIGURED: | |
149 | seq_printf(m, "%-12s\n", "unconfigured"); | |
150 | break; | |
151 | case WAN_DISCONNECTED: | |
152 | seq_printf(m, "%-12s\n", "disconnected"); | |
153 | break; | |
154 | case WAN_CONNECTING: | |
155 | seq_printf(m, "%-12s\n", "connecting"); | |
156 | break; | |
157 | case WAN_CONNECTED: | |
158 | seq_printf(m, "%-12s\n", "connected"); | |
159 | break; | |
160 | default: | |
161 | seq_printf(m, "%-12s\n", "invalid"); | |
162 | break; | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
56b3d975 | 167 | static const struct seq_operations config_op = { |
1da177e4 LT |
168 | .start = r_start, |
169 | .next = r_next, | |
170 | .stop = r_stop, | |
171 | .show = config_show, | |
172 | }; | |
173 | ||
56b3d975 | 174 | static const struct seq_operations status_op = { |
1da177e4 LT |
175 | .start = r_start, |
176 | .next = r_next, | |
177 | .stop = r_stop, | |
178 | .show = status_show, | |
179 | }; | |
180 | ||
181 | static int config_open(struct inode *inode, struct file *file) | |
182 | { | |
183 | return seq_open(file, &config_op); | |
184 | } | |
185 | ||
186 | static int status_open(struct inode *inode, struct file *file) | |
187 | { | |
188 | return seq_open(file, &status_op); | |
189 | } | |
190 | ||
da7071d7 | 191 | static const struct file_operations config_fops = { |
1da177e4 LT |
192 | .owner = THIS_MODULE, |
193 | .open = config_open, | |
194 | .read = seq_read, | |
195 | .llseek = seq_lseek, | |
196 | .release = seq_release, | |
197 | }; | |
198 | ||
da7071d7 | 199 | static const struct file_operations status_fops = { |
1da177e4 LT |
200 | .owner = THIS_MODULE, |
201 | .open = status_open, | |
202 | .read = seq_read, | |
203 | .llseek = seq_lseek, | |
204 | .release = seq_release, | |
205 | }; | |
206 | ||
207 | static int wandev_show(struct seq_file *m, void *v) | |
208 | { | |
209 | struct wan_device *wandev = m->private; | |
210 | ||
211 | if (wandev->magic != ROUTER_MAGIC) | |
212 | return 0; | |
213 | ||
214 | if (!wandev->state) { | |
215 | seq_puts(m, "device is not configured!\n"); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | /* Update device statistics */ | |
220 | if (wandev->update) { | |
221 | int err = wandev->update(wandev); | |
222 | if (err == -EAGAIN) { | |
223 | seq_puts(m, "Device is busy!\n"); | |
224 | return 0; | |
225 | } | |
226 | if (err) { | |
227 | seq_puts(m, "Device is not configured!\n"); | |
228 | return 0; | |
229 | } | |
230 | } | |
231 | ||
232 | seq_printf(m, PROC_STATS_FORMAT, | |
233 | "total packets received", wandev->stats.rx_packets); | |
234 | seq_printf(m, PROC_STATS_FORMAT, | |
235 | "total packets transmitted", wandev->stats.tx_packets); | |
236 | seq_printf(m, PROC_STATS_FORMAT, | |
237 | "total bytes received", wandev->stats.rx_bytes); | |
238 | seq_printf(m, PROC_STATS_FORMAT, | |
239 | "total bytes transmitted", wandev->stats.tx_bytes); | |
240 | seq_printf(m, PROC_STATS_FORMAT, | |
241 | "bad packets received", wandev->stats.rx_errors); | |
242 | seq_printf(m, PROC_STATS_FORMAT, | |
243 | "packet transmit problems", wandev->stats.tx_errors); | |
244 | seq_printf(m, PROC_STATS_FORMAT, | |
245 | "received frames dropped", wandev->stats.rx_dropped); | |
246 | seq_printf(m, PROC_STATS_FORMAT, | |
247 | "transmit frames dropped", wandev->stats.tx_dropped); | |
248 | seq_printf(m, PROC_STATS_FORMAT, | |
249 | "multicast packets received", wandev->stats.multicast); | |
250 | seq_printf(m, PROC_STATS_FORMAT, | |
251 | "transmit collisions", wandev->stats.collisions); | |
252 | seq_printf(m, PROC_STATS_FORMAT, | |
253 | "receive length errors", wandev->stats.rx_length_errors); | |
254 | seq_printf(m, PROC_STATS_FORMAT, | |
255 | "receiver overrun errors", wandev->stats.rx_over_errors); | |
256 | seq_printf(m, PROC_STATS_FORMAT, | |
257 | "CRC errors", wandev->stats.rx_crc_errors); | |
258 | seq_printf(m, PROC_STATS_FORMAT, | |
259 | "frame format errors (aborts)", wandev->stats.rx_frame_errors); | |
260 | seq_printf(m, PROC_STATS_FORMAT, | |
261 | "receiver fifo overrun", wandev->stats.rx_fifo_errors); | |
262 | seq_printf(m, PROC_STATS_FORMAT, | |
263 | "receiver missed packet", wandev->stats.rx_missed_errors); | |
264 | seq_printf(m, PROC_STATS_FORMAT, | |
265 | "aborted frames transmitted", wandev->stats.tx_aborted_errors); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | static int wandev_open(struct inode *inode, struct file *file) | |
270 | { | |
271 | return single_open(file, wandev_show, PDE(inode)->data); | |
272 | } | |
273 | ||
da7071d7 | 274 | static const struct file_operations wandev_fops = { |
1da177e4 LT |
275 | .owner = THIS_MODULE, |
276 | .open = wandev_open, | |
277 | .read = seq_read, | |
278 | .llseek = seq_lseek, | |
279 | .release = single_release, | |
280 | .ioctl = wanrouter_ioctl, | |
281 | }; | |
282 | ||
283 | /* | |
284 | * Initialize router proc interface. | |
285 | */ | |
286 | ||
287 | int __init wanrouter_proc_init(void) | |
288 | { | |
289 | struct proc_dir_entry *p; | |
290 | proc_router = proc_mkdir(ROUTER_NAME, proc_net); | |
291 | if (!proc_router) | |
292 | goto fail; | |
293 | ||
294 | p = create_proc_entry("config", S_IRUGO, proc_router); | |
295 | if (!p) | |
296 | goto fail_config; | |
297 | p->proc_fops = &config_fops; | |
298 | p = create_proc_entry("status", S_IRUGO, proc_router); | |
299 | if (!p) | |
300 | goto fail_stat; | |
301 | p->proc_fops = &status_fops; | |
302 | return 0; | |
303 | fail_stat: | |
304 | remove_proc_entry("config", proc_router); | |
305 | fail_config: | |
306 | remove_proc_entry(ROUTER_NAME, proc_net); | |
307 | fail: | |
308 | return -ENOMEM; | |
309 | } | |
310 | ||
311 | /* | |
312 | * Clean up router proc interface. | |
313 | */ | |
314 | ||
315 | void wanrouter_proc_cleanup(void) | |
316 | { | |
317 | remove_proc_entry("config", proc_router); | |
318 | remove_proc_entry("status", proc_router); | |
319 | remove_proc_entry(ROUTER_NAME, proc_net); | |
320 | } | |
321 | ||
322 | /* | |
323 | * Add directory entry for WAN device. | |
324 | */ | |
325 | ||
326 | int wanrouter_proc_add(struct wan_device* wandev) | |
327 | { | |
328 | if (wandev->magic != ROUTER_MAGIC) | |
329 | return -EINVAL; | |
330 | ||
331 | wandev->dent = create_proc_entry(wandev->name, S_IRUGO, proc_router); | |
332 | if (!wandev->dent) | |
333 | return -ENOMEM; | |
334 | wandev->dent->proc_fops = &wandev_fops; | |
335 | wandev->dent->data = wandev; | |
336 | return 0; | |
337 | } | |
338 | ||
339 | /* | |
340 | * Delete directory entry for WAN device. | |
341 | */ | |
342 | int wanrouter_proc_delete(struct wan_device* wandev) | |
343 | { | |
344 | if (wandev->magic != ROUTER_MAGIC) | |
345 | return -EINVAL; | |
346 | remove_proc_entry(wandev->name, proc_router); | |
347 | return 0; | |
348 | } | |
349 | ||
350 | #else | |
351 | ||
352 | /* | |
353 | * No /proc - output stubs | |
354 | */ | |
355 | ||
356 | int __init wanrouter_proc_init(void) | |
357 | { | |
358 | return 0; | |
359 | } | |
360 | ||
361 | void wanrouter_proc_cleanup(void) | |
362 | { | |
363 | } | |
364 | ||
365 | int wanrouter_proc_add(struct wan_device *wandev) | |
366 | { | |
367 | return 0; | |
368 | } | |
369 | ||
370 | int wanrouter_proc_delete(struct wan_device *wandev) | |
371 | { | |
372 | return 0; | |
373 | } | |
374 | ||
375 | #endif | |
376 | ||
377 | /* | |
378 | * End | |
379 | */ | |
380 |