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1// SPDX-License-Identifier: GPL-2.0
2/* /proc routines for Host AP driver */
3
4#include <linux/types.h>
5#include <linux/proc_fs.h>
6#include <linux/export.h>
7#include <net/lib80211.h>
8
9#include "hostap_wlan.h"
10#include "hostap.h"
11
12#define PROC_LIMIT (PAGE_SIZE - 80)
13
14#if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS)
15static int prism2_debug_proc_show(struct seq_file *m, void *v)
16{
17 local_info_t *local = m->private;
18 int i;
19
20 seq_printf(m, "next_txfid=%d next_alloc=%d\n",
21 local->next_txfid, local->next_alloc);
22 for (i = 0; i < PRISM2_TXFID_COUNT; i++)
23 seq_printf(m, "FID: tx=%04X intransmit=%04X\n",
24 local->txfid[i], local->intransmitfid[i]);
25 seq_printf(m, "FW TX rate control: %d\n", local->fw_tx_rate_control);
26 seq_printf(m, "beacon_int=%d\n", local->beacon_int);
27 seq_printf(m, "dtim_period=%d\n", local->dtim_period);
28 seq_printf(m, "wds_max_connections=%d\n", local->wds_max_connections);
29 seq_printf(m, "dev_enabled=%d\n", local->dev_enabled);
30 seq_printf(m, "sw_tick_stuck=%d\n", local->sw_tick_stuck);
31 for (i = 0; i < WEP_KEYS; i++) {
32 if (local->crypt_info.crypt[i] &&
33 local->crypt_info.crypt[i]->ops) {
34 seq_printf(m, "crypt[%d]=%s\n", i,
35 local->crypt_info.crypt[i]->ops->name);
36 }
37 }
38 seq_printf(m, "pri_only=%d\n", local->pri_only);
39 seq_printf(m, "pci=%d\n", local->func->hw_type == HOSTAP_HW_PCI);
40 seq_printf(m, "sram_type=%d\n", local->sram_type);
41 seq_printf(m, "no_pri=%d\n", local->no_pri);
42
43 return 0;
44}
45#endif
46
47#ifdef CONFIG_PROC_FS
48static int prism2_stats_proc_show(struct seq_file *m, void *v)
49{
50 local_info_t *local = m->private;
51 struct comm_tallies_sums *sums = &local->comm_tallies;
52
53 seq_printf(m, "TxUnicastFrames=%u\n", sums->tx_unicast_frames);
54 seq_printf(m, "TxMulticastframes=%u\n", sums->tx_multicast_frames);
55 seq_printf(m, "TxFragments=%u\n", sums->tx_fragments);
56 seq_printf(m, "TxUnicastOctets=%u\n", sums->tx_unicast_octets);
57 seq_printf(m, "TxMulticastOctets=%u\n", sums->tx_multicast_octets);
58 seq_printf(m, "TxDeferredTransmissions=%u\n",
59 sums->tx_deferred_transmissions);
60 seq_printf(m, "TxSingleRetryFrames=%u\n", sums->tx_single_retry_frames);
61 seq_printf(m, "TxMultipleRetryFrames=%u\n",
62 sums->tx_multiple_retry_frames);
63 seq_printf(m, "TxRetryLimitExceeded=%u\n",
64 sums->tx_retry_limit_exceeded);
65 seq_printf(m, "TxDiscards=%u\n", sums->tx_discards);
66 seq_printf(m, "RxUnicastFrames=%u\n", sums->rx_unicast_frames);
67 seq_printf(m, "RxMulticastFrames=%u\n", sums->rx_multicast_frames);
68 seq_printf(m, "RxFragments=%u\n", sums->rx_fragments);
69 seq_printf(m, "RxUnicastOctets=%u\n", sums->rx_unicast_octets);
70 seq_printf(m, "RxMulticastOctets=%u\n", sums->rx_multicast_octets);
71 seq_printf(m, "RxFCSErrors=%u\n", sums->rx_fcs_errors);
72 seq_printf(m, "RxDiscardsNoBuffer=%u\n", sums->rx_discards_no_buffer);
73 seq_printf(m, "TxDiscardsWrongSA=%u\n", sums->tx_discards_wrong_sa);
74 seq_printf(m, "RxDiscardsWEPUndecryptable=%u\n",
75 sums->rx_discards_wep_undecryptable);
76 seq_printf(m, "RxMessageInMsgFragments=%u\n",
77 sums->rx_message_in_msg_fragments);
78 seq_printf(m, "RxMessageInBadMsgFragments=%u\n",
79 sums->rx_message_in_bad_msg_fragments);
80 /* FIX: this may grow too long for one page(?) */
81
82 return 0;
83}
84#endif
85
86static int prism2_wds_proc_show(struct seq_file *m, void *v)
87{
88 struct list_head *ptr = v;
89 struct hostap_interface *iface;
90
91 iface = list_entry(ptr, struct hostap_interface, list);
92 if (iface->type == HOSTAP_INTERFACE_WDS)
93 seq_printf(m, "%s\t%pM\n",
94 iface->dev->name, iface->u.wds.remote_addr);
95 return 0;
96}
97
98static void *prism2_wds_proc_start(struct seq_file *m, loff_t *_pos)
99{
100 local_info_t *local = PDE_DATA(file_inode(m->file));
101 read_lock_bh(&local->iface_lock);
102 return seq_list_start(&local->hostap_interfaces, *_pos);
103}
104
105static void *prism2_wds_proc_next(struct seq_file *m, void *v, loff_t *_pos)
106{
107 local_info_t *local = PDE_DATA(file_inode(m->file));
108 return seq_list_next(v, &local->hostap_interfaces, _pos);
109}
110
111static void prism2_wds_proc_stop(struct seq_file *m, void *v)
112{
113 local_info_t *local = PDE_DATA(file_inode(m->file));
114 read_unlock_bh(&local->iface_lock);
115}
116
117static const struct seq_operations prism2_wds_proc_seqops = {
118 .start = prism2_wds_proc_start,
119 .next = prism2_wds_proc_next,
120 .stop = prism2_wds_proc_stop,
121 .show = prism2_wds_proc_show,
122};
123
124static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
125{
126 local_info_t *local = PDE_DATA(file_inode(m->file));
127 struct list_head *ptr = v;
128 struct hostap_bss_info *bss;
129
130 if (ptr == &local->bss_list) {
131 seq_printf(m, "#BSSID\tlast_update\tcount\tcapab_info\tSSID(txt)\t"
132 "SSID(hex)\tWPA IE\n");
133 return 0;
134 }
135
136 bss = list_entry(ptr, struct hostap_bss_info, list);
137 seq_printf(m, "%pM\t%lu\t%u\t0x%x\t",
138 bss->bssid, bss->last_update,
139 bss->count, bss->capab_info);
140
141 seq_printf(m, "%*pE", (int)bss->ssid_len, bss->ssid);
142
143 seq_putc(m, '\t');
144 seq_printf(m, "%*phN", (int)bss->ssid_len, bss->ssid);
145 seq_putc(m, '\t');
146 seq_printf(m, "%*phN", (int)bss->wpa_ie_len, bss->wpa_ie);
147 seq_putc(m, '\n');
148 return 0;
149}
150
151static void *prism2_bss_list_proc_start(struct seq_file *m, loff_t *_pos)
152{
153 local_info_t *local = PDE_DATA(file_inode(m->file));
154 spin_lock_bh(&local->lock);
155 return seq_list_start_head(&local->bss_list, *_pos);
156}
157
158static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
159{
160 local_info_t *local = PDE_DATA(file_inode(m->file));
161 return seq_list_next(v, &local->bss_list, _pos);
162}
163
164static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
165{
166 local_info_t *local = PDE_DATA(file_inode(m->file));
167 spin_unlock_bh(&local->lock);
168}
169
170static const struct seq_operations prism2_bss_list_proc_seqops = {
171 .start = prism2_bss_list_proc_start,
172 .next = prism2_bss_list_proc_next,
173 .stop = prism2_bss_list_proc_stop,
174 .show = prism2_bss_list_proc_show,
175};
176
177#ifdef CONFIG_PROC_FS
178static int prism2_crypt_proc_show(struct seq_file *m, void *v)
179{
180 local_info_t *local = m->private;
181 int i;
182
183 seq_printf(m, "tx_keyidx=%d\n", local->crypt_info.tx_keyidx);
184 for (i = 0; i < WEP_KEYS; i++) {
185 if (local->crypt_info.crypt[i] &&
186 local->crypt_info.crypt[i]->ops &&
187 local->crypt_info.crypt[i]->ops->print_stats) {
188 local->crypt_info.crypt[i]->ops->print_stats(
189 m, local->crypt_info.crypt[i]->priv);
190 }
191 }
192 return 0;
193}
194#endif
195
196static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
197 size_t count, loff_t *_pos)
198{
199 local_info_t *local = PDE_DATA(file_inode(file));
200 size_t off;
201
202 if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
203 return 0;
204
205 off = *_pos;
206 if (count > PRISM2_PDA_SIZE - off)
207 count = PRISM2_PDA_SIZE - off;
208 if (copy_to_user(buf, local->pda + off, count) != 0)
209 return -EFAULT;
210 *_pos += count;
211 return count;
212}
213
214static const struct file_operations prism2_pda_proc_fops = {
215 .read = prism2_pda_proc_read,
216 .llseek = generic_file_llseek,
217};
218
219
220static ssize_t prism2_aux_dump_proc_no_read(struct file *file, char __user *buf,
221 size_t bufsize, loff_t *_pos)
222{
223 return 0;
224}
225
226static const struct file_operations prism2_aux_dump_proc_fops = {
227 .read = prism2_aux_dump_proc_no_read,
228};
229
230
231#ifdef PRISM2_IO_DEBUG
232static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
233 int count, int *eof, void *data)
234{
235 local_info_t *local = (local_info_t *) data;
236 int head = local->io_debug_head;
237 int start_bytes, left, copy;
238
239 if (off + count > PRISM2_IO_DEBUG_SIZE * 4) {
240 *eof = 1;
241 if (off >= PRISM2_IO_DEBUG_SIZE * 4)
242 return 0;
243 count = PRISM2_IO_DEBUG_SIZE * 4 - off;
244 }
245
246 start_bytes = (PRISM2_IO_DEBUG_SIZE - head) * 4;
247 left = count;
248
249 if (off < start_bytes) {
250 copy = start_bytes - off;
251 if (copy > count)
252 copy = count;
253 memcpy(page, ((u8 *) &local->io_debug[head]) + off, copy);
254 left -= copy;
255 if (left > 0)
256 memcpy(&page[copy], local->io_debug, left);
257 } else {
258 memcpy(page, ((u8 *) local->io_debug) + (off - start_bytes),
259 left);
260 }
261
262 *start = page;
263
264 return count;
265}
266#endif /* PRISM2_IO_DEBUG */
267
268
269#ifndef PRISM2_NO_STATION_MODES
270static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
271{
272 local_info_t *local = PDE_DATA(file_inode(m->file));
273 unsigned long entry;
274 int i, len;
275 struct hfa384x_hostscan_result *scanres;
276 u8 *p;
277
278 if (v == SEQ_START_TOKEN) {
279 seq_printf(m,
280 "CHID ANL SL BcnInt Capab Rate BSSID ATIM SupRates SSID\n");
281 return 0;
282 }
283
284 entry = (unsigned long)v - 2;
285 scanres = &local->last_scan_results[entry];
286
287 seq_printf(m, "%d %d %d %d 0x%02x %d %pM %d ",
288 le16_to_cpu(scanres->chid),
289 (s16) le16_to_cpu(scanres->anl),
290 (s16) le16_to_cpu(scanres->sl),
291 le16_to_cpu(scanres->beacon_interval),
292 le16_to_cpu(scanres->capability),
293 le16_to_cpu(scanres->rate),
294 scanres->bssid,
295 le16_to_cpu(scanres->atim));
296
297 p = scanres->sup_rates;
298 for (i = 0; i < sizeof(scanres->sup_rates); i++) {
299 if (p[i] == 0)
300 break;
301 seq_printf(m, "<%02x>", p[i]);
302 }
303 seq_putc(m, ' ');
304
305 p = scanres->ssid;
306 len = le16_to_cpu(scanres->ssid_len);
307 if (len > 32)
308 len = 32;
309 for (i = 0; i < len; i++) {
310 unsigned char c = p[i];
311 if (c >= 32 && c < 127)
312 seq_putc(m, c);
313 else
314 seq_printf(m, "<%02x>", c);
315 }
316 seq_putc(m, '\n');
317 return 0;
318}
319
320static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
321{
322 local_info_t *local = PDE_DATA(file_inode(m->file));
323 spin_lock_bh(&local->lock);
324
325 /* We have a header (pos 0) + N results to show (pos 1...N) */
326 if (*_pos > local->last_scan_results_count)
327 return NULL;
328 return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
329}
330
331static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
332{
333 local_info_t *local = PDE_DATA(file_inode(m->file));
334
335 ++*_pos;
336 if (*_pos > local->last_scan_results_count)
337 return NULL;
338 return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
339}
340
341static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
342{
343 local_info_t *local = PDE_DATA(file_inode(m->file));
344 spin_unlock_bh(&local->lock);
345}
346
347static const struct seq_operations prism2_scan_results_proc_seqops = {
348 .start = prism2_scan_results_proc_start,
349 .next = prism2_scan_results_proc_next,
350 .stop = prism2_scan_results_proc_stop,
351 .show = prism2_scan_results_proc_show,
352};
353#endif /* PRISM2_NO_STATION_MODES */
354
355
356void hostap_init_proc(local_info_t *local)
357{
358 local->proc = NULL;
359
360 if (hostap_proc == NULL) {
361 printk(KERN_WARNING "%s: hostap proc directory not created\n",
362 local->dev->name);
363 return;
364 }
365
366 local->proc = proc_mkdir(local->ddev->name, hostap_proc);
367 if (local->proc == NULL) {
368 printk(KERN_INFO "/proc/net/hostap/%s creation failed\n",
369 local->ddev->name);
370 return;
371 }
372
373#ifndef PRISM2_NO_PROCFS_DEBUG
374 proc_create_single_data("debug", 0, local->proc,
375 prism2_debug_proc_show, local);
376#endif /* PRISM2_NO_PROCFS_DEBUG */
377 proc_create_single_data("stats", 0, local->proc, prism2_stats_proc_show,
378 local);
379 proc_create_seq_data("wds", 0, local->proc,
380 &prism2_wds_proc_seqops, local);
381 proc_create_data("pda", 0, local->proc,
382 &prism2_pda_proc_fops, local);
383 proc_create_data("aux_dump", 0, local->proc,
384 local->func->read_aux_fops ?: &prism2_aux_dump_proc_fops,
385 local);
386 proc_create_seq_data("bss_list", 0, local->proc,
387 &prism2_bss_list_proc_seqops, local);
388 proc_create_single_data("crypt", 0, local->proc, prism2_crypt_proc_show,
389 local);
390#ifdef PRISM2_IO_DEBUG
391 proc_create_single_data("io_debug", 0, local->proc,
392 prism2_debug_proc_show, local);
393#endif /* PRISM2_IO_DEBUG */
394#ifndef PRISM2_NO_STATION_MODES
395 proc_create_seq_data("scan_results", 0, local->proc,
396 &prism2_scan_results_proc_seqops, local);
397#endif /* PRISM2_NO_STATION_MODES */
398}
399
400
401void hostap_remove_proc(local_info_t *local)
402{
403 proc_remove(local->proc);
404}
405
406
407EXPORT_SYMBOL(hostap_init_proc);
408EXPORT_SYMBOL(hostap_remove_proc);