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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 __acquires(&local->lock)
153{
154 local_info_t *local = PDE_DATA(file_inode(m->file));
155 spin_lock_bh(&local->lock);
156 return seq_list_start_head(&local->bss_list, *_pos);
157}
158
159static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
160{
161 local_info_t *local = PDE_DATA(file_inode(m->file));
162 return seq_list_next(v, &local->bss_list, _pos);
163}
164
165static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
166 __releases(&local->lock)
167{
168 local_info_t *local = PDE_DATA(file_inode(m->file));
169 spin_unlock_bh(&local->lock);
170}
171
172static const struct seq_operations prism2_bss_list_proc_seqops = {
173 .start = prism2_bss_list_proc_start,
174 .next = prism2_bss_list_proc_next,
175 .stop = prism2_bss_list_proc_stop,
176 .show = prism2_bss_list_proc_show,
177};
178
179#ifdef CONFIG_PROC_FS
180static int prism2_crypt_proc_show(struct seq_file *m, void *v)
181{
182 local_info_t *local = m->private;
183 int i;
184
185 seq_printf(m, "tx_keyidx=%d\n", local->crypt_info.tx_keyidx);
186 for (i = 0; i < WEP_KEYS; i++) {
187 if (local->crypt_info.crypt[i] &&
188 local->crypt_info.crypt[i]->ops &&
189 local->crypt_info.crypt[i]->ops->print_stats) {
190 local->crypt_info.crypt[i]->ops->print_stats(
191 m, local->crypt_info.crypt[i]->priv);
192 }
193 }
194 return 0;
195}
196#endif
197
198static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
199 size_t count, loff_t *_pos)
200{
201 local_info_t *local = PDE_DATA(file_inode(file));
202 size_t off;
203
204 if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
205 return 0;
206
207 off = *_pos;
208 if (count > PRISM2_PDA_SIZE - off)
209 count = PRISM2_PDA_SIZE - off;
210 if (copy_to_user(buf, local->pda + off, count) != 0)
211 return -EFAULT;
212 *_pos += count;
213 return count;
214}
215
216static const struct proc_ops prism2_pda_proc_ops = {
217 .proc_read = prism2_pda_proc_read,
218 .proc_lseek = generic_file_llseek,
219};
220
221
222static ssize_t prism2_aux_dump_proc_no_read(struct file *file, char __user *buf,
223 size_t bufsize, loff_t *_pos)
224{
225 return 0;
226}
227
228static const struct proc_ops prism2_aux_dump_proc_ops = {
229 .proc_read = prism2_aux_dump_proc_no_read,
230};
231
232
233#ifdef PRISM2_IO_DEBUG
234static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
235 int count, int *eof, void *data)
236{
237 local_info_t *local = (local_info_t *) data;
238 int head = local->io_debug_head;
239 int start_bytes, left, copy;
240
241 if (off + count > PRISM2_IO_DEBUG_SIZE * 4) {
242 *eof = 1;
243 if (off >= PRISM2_IO_DEBUG_SIZE * 4)
244 return 0;
245 count = PRISM2_IO_DEBUG_SIZE * 4 - off;
246 }
247
248 start_bytes = (PRISM2_IO_DEBUG_SIZE - head) * 4;
249 left = count;
250
251 if (off < start_bytes) {
252 copy = start_bytes - off;
253 if (copy > count)
254 copy = count;
255 memcpy(page, ((u8 *) &local->io_debug[head]) + off, copy);
256 left -= copy;
257 if (left > 0)
258 memcpy(&page[copy], local->io_debug, left);
259 } else {
260 memcpy(page, ((u8 *) local->io_debug) + (off - start_bytes),
261 left);
262 }
263
264 *start = page;
265
266 return count;
267}
268#endif /* PRISM2_IO_DEBUG */
269
270
271#ifndef PRISM2_NO_STATION_MODES
272static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
273{
274 local_info_t *local = PDE_DATA(file_inode(m->file));
275 unsigned long entry;
276 int i, len;
277 struct hfa384x_hostscan_result *scanres;
278 u8 *p;
279
280 if (v == SEQ_START_TOKEN) {
281 seq_printf(m,
282 "CHID ANL SL BcnInt Capab Rate BSSID ATIM SupRates SSID\n");
283 return 0;
284 }
285
286 entry = (unsigned long)v - 2;
287 scanres = &local->last_scan_results[entry];
288
289 seq_printf(m, "%d %d %d %d 0x%02x %d %pM %d ",
290 le16_to_cpu(scanres->chid),
291 (s16) le16_to_cpu(scanres->anl),
292 (s16) le16_to_cpu(scanres->sl),
293 le16_to_cpu(scanres->beacon_interval),
294 le16_to_cpu(scanres->capability),
295 le16_to_cpu(scanres->rate),
296 scanres->bssid,
297 le16_to_cpu(scanres->atim));
298
299 p = scanres->sup_rates;
300 for (i = 0; i < sizeof(scanres->sup_rates); i++) {
301 if (p[i] == 0)
302 break;
303 seq_printf(m, "<%02x>", p[i]);
304 }
305 seq_putc(m, ' ');
306
307 p = scanres->ssid;
308 len = le16_to_cpu(scanres->ssid_len);
309 if (len > 32)
310 len = 32;
311 for (i = 0; i < len; i++) {
312 unsigned char c = p[i];
313 if (c >= 32 && c < 127)
314 seq_putc(m, c);
315 else
316 seq_printf(m, "<%02x>", c);
317 }
318 seq_putc(m, '\n');
319 return 0;
320}
321
322static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
323{
324 local_info_t *local = PDE_DATA(file_inode(m->file));
325 spin_lock_bh(&local->lock);
326
327 /* We have a header (pos 0) + N results to show (pos 1...N) */
328 if (*_pos > local->last_scan_results_count)
329 return NULL;
330 return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
331}
332
333static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
334{
335 local_info_t *local = PDE_DATA(file_inode(m->file));
336
337 ++*_pos;
338 if (*_pos > local->last_scan_results_count)
339 return NULL;
340 return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
341}
342
343static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
344{
345 local_info_t *local = PDE_DATA(file_inode(m->file));
346 spin_unlock_bh(&local->lock);
347}
348
349static const struct seq_operations prism2_scan_results_proc_seqops = {
350 .start = prism2_scan_results_proc_start,
351 .next = prism2_scan_results_proc_next,
352 .stop = prism2_scan_results_proc_stop,
353 .show = prism2_scan_results_proc_show,
354};
355#endif /* PRISM2_NO_STATION_MODES */
356
357
358void hostap_init_proc(local_info_t *local)
359{
360 local->proc = NULL;
361
362 if (hostap_proc == NULL) {
363 printk(KERN_WARNING "%s: hostap proc directory not created\n",
364 local->dev->name);
365 return;
366 }
367
368 local->proc = proc_mkdir(local->ddev->name, hostap_proc);
369 if (local->proc == NULL) {
370 printk(KERN_INFO "/proc/net/hostap/%s creation failed\n",
371 local->ddev->name);
372 return;
373 }
374
375#ifndef PRISM2_NO_PROCFS_DEBUG
376 proc_create_single_data("debug", 0, local->proc,
377 prism2_debug_proc_show, local);
378#endif /* PRISM2_NO_PROCFS_DEBUG */
379 proc_create_single_data("stats", 0, local->proc, prism2_stats_proc_show,
380 local);
381 proc_create_seq_data("wds", 0, local->proc,
382 &prism2_wds_proc_seqops, local);
383 proc_create_data("pda", 0, local->proc,
384 &prism2_pda_proc_ops, local);
385 proc_create_data("aux_dump", 0, local->proc,
386 local->func->read_aux_proc_ops ?: &prism2_aux_dump_proc_ops,
387 local);
388 proc_create_seq_data("bss_list", 0, local->proc,
389 &prism2_bss_list_proc_seqops, local);
390 proc_create_single_data("crypt", 0, local->proc, prism2_crypt_proc_show,
391 local);
392#ifdef PRISM2_IO_DEBUG
393 proc_create_single_data("io_debug", 0, local->proc,
394 prism2_debug_proc_show, local);
395#endif /* PRISM2_IO_DEBUG */
396#ifndef PRISM2_NO_STATION_MODES
397 proc_create_seq_data("scan_results", 0, local->proc,
398 &prism2_scan_results_proc_seqops, local);
399#endif /* PRISM2_NO_STATION_MODES */
400}
401
402
403void hostap_remove_proc(local_info_t *local)
404{
405 proc_remove(local->proc);
406}
407
408
409EXPORT_SYMBOL(hostap_init_proc);
410EXPORT_SYMBOL(hostap_remove_proc);