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
 15#ifndef PRISM2_NO_PROCFS_DEBUG
 16static int prism2_debug_proc_show(struct seq_file *m, void *v)
 17{
 18	local_info_t *local = m->private;
 19	int i;
 20
 21	seq_printf(m, "next_txfid=%d next_alloc=%d\n",
 22		   local->next_txfid, local->next_alloc);
 23	for (i = 0; i < PRISM2_TXFID_COUNT; i++)
 24		seq_printf(m, "FID: tx=%04X intransmit=%04X\n",
 25			   local->txfid[i], local->intransmitfid[i]);
 26	seq_printf(m, "FW TX rate control: %d\n", local->fw_tx_rate_control);
 27	seq_printf(m, "beacon_int=%d\n", local->beacon_int);
 28	seq_printf(m, "dtim_period=%d\n", local->dtim_period);
 29	seq_printf(m, "wds_max_connections=%d\n", local->wds_max_connections);
 30	seq_printf(m, "dev_enabled=%d\n", local->dev_enabled);
 31	seq_printf(m, "sw_tick_stuck=%d\n", local->sw_tick_stuck);
 32	for (i = 0; i < WEP_KEYS; i++) {
 33		if (local->crypt_info.crypt[i] &&
 34		    local->crypt_info.crypt[i]->ops) {
 35			seq_printf(m, "crypt[%d]=%s\n", i,
 36				   local->crypt_info.crypt[i]->ops->name);
 37		}
 38	}
 39	seq_printf(m, "pri_only=%d\n", local->pri_only);
 40	seq_printf(m, "pci=%d\n", local->func->hw_type == HOSTAP_HW_PCI);
 41	seq_printf(m, "sram_type=%d\n", local->sram_type);
 42	seq_printf(m, "no_pri=%d\n", local->no_pri);
 43
 44	return 0;
 45}
 46
 47static int prism2_debug_proc_open(struct inode *inode, struct file *file)
 48{
 49	return single_open(file, prism2_debug_proc_show, PDE_DATA(inode));
 50}
 51
 52static const struct file_operations prism2_debug_proc_fops = {
 53	.open		= prism2_debug_proc_open,
 54	.read		= seq_read,
 55	.llseek		= seq_lseek,
 56	.release	= single_release,
 57};
 58#endif /* PRISM2_NO_PROCFS_DEBUG */
 59
 60
 61static int prism2_stats_proc_show(struct seq_file *m, void *v)
 62{
 63	local_info_t *local = m->private;
 64	struct comm_tallies_sums *sums = &local->comm_tallies;
 65
 66	seq_printf(m, "TxUnicastFrames=%u\n", sums->tx_unicast_frames);
 67	seq_printf(m, "TxMulticastframes=%u\n", sums->tx_multicast_frames);
 68	seq_printf(m, "TxFragments=%u\n", sums->tx_fragments);
 69	seq_printf(m, "TxUnicastOctets=%u\n", sums->tx_unicast_octets);
 70	seq_printf(m, "TxMulticastOctets=%u\n", sums->tx_multicast_octets);
 71	seq_printf(m, "TxDeferredTransmissions=%u\n",
 72		   sums->tx_deferred_transmissions);
 73	seq_printf(m, "TxSingleRetryFrames=%u\n", sums->tx_single_retry_frames);
 74	seq_printf(m, "TxMultipleRetryFrames=%u\n",
 75		   sums->tx_multiple_retry_frames);
 76	seq_printf(m, "TxRetryLimitExceeded=%u\n",
 77		   sums->tx_retry_limit_exceeded);
 78	seq_printf(m, "TxDiscards=%u\n", sums->tx_discards);
 79	seq_printf(m, "RxUnicastFrames=%u\n", sums->rx_unicast_frames);
 80	seq_printf(m, "RxMulticastFrames=%u\n", sums->rx_multicast_frames);
 81	seq_printf(m, "RxFragments=%u\n", sums->rx_fragments);
 82	seq_printf(m, "RxUnicastOctets=%u\n", sums->rx_unicast_octets);
 83	seq_printf(m, "RxMulticastOctets=%u\n", sums->rx_multicast_octets);
 84	seq_printf(m, "RxFCSErrors=%u\n", sums->rx_fcs_errors);
 85	seq_printf(m, "RxDiscardsNoBuffer=%u\n", sums->rx_discards_no_buffer);
 86	seq_printf(m, "TxDiscardsWrongSA=%u\n", sums->tx_discards_wrong_sa);
 87	seq_printf(m, "RxDiscardsWEPUndecryptable=%u\n",
 88		   sums->rx_discards_wep_undecryptable);
 89	seq_printf(m, "RxMessageInMsgFragments=%u\n",
 90		   sums->rx_message_in_msg_fragments);
 91	seq_printf(m, "RxMessageInBadMsgFragments=%u\n",
 92		   sums->rx_message_in_bad_msg_fragments);
 93	/* FIX: this may grow too long for one page(?) */
 94
 95	return 0;
 96}
 97
 98static int prism2_stats_proc_open(struct inode *inode, struct file *file)
 99{
100	return single_open(file, prism2_stats_proc_show, PDE_DATA(inode));
101}
102
103static const struct file_operations prism2_stats_proc_fops = {
104	.open		= prism2_stats_proc_open,
105	.read		= seq_read,
106	.llseek		= seq_lseek,
107	.release	= single_release,
108};
109
110
111static int prism2_wds_proc_show(struct seq_file *m, void *v)
112{
113	struct list_head *ptr = v;
114	struct hostap_interface *iface;
115
116	iface = list_entry(ptr, struct hostap_interface, list);
117	if (iface->type == HOSTAP_INTERFACE_WDS)
118		seq_printf(m, "%s\t%pM\n",
119			   iface->dev->name, iface->u.wds.remote_addr);
120	return 0;
121}
122
123static void *prism2_wds_proc_start(struct seq_file *m, loff_t *_pos)
124{
125	local_info_t *local = m->private;
126	read_lock_bh(&local->iface_lock);
127	return seq_list_start(&local->hostap_interfaces, *_pos);
128}
129
130static void *prism2_wds_proc_next(struct seq_file *m, void *v, loff_t *_pos)
131{
132	local_info_t *local = m->private;
133	return seq_list_next(v, &local->hostap_interfaces, _pos);
134}
135
136static void prism2_wds_proc_stop(struct seq_file *m, void *v)
137{
138	local_info_t *local = m->private;
139	read_unlock_bh(&local->iface_lock);
140}
141
142static const struct seq_operations prism2_wds_proc_seqops = {
143	.start	= prism2_wds_proc_start,
144	.next	= prism2_wds_proc_next,
145	.stop	= prism2_wds_proc_stop,
146	.show	= prism2_wds_proc_show,
147};
148
149static int prism2_wds_proc_open(struct inode *inode, struct file *file)
150{
151	int ret = seq_open(file, &prism2_wds_proc_seqops);
152	if (ret == 0) {
153		struct seq_file *m = file->private_data;
154		m->private = PDE_DATA(inode);
155	}
156	return ret;
157}
158
159static const struct file_operations prism2_wds_proc_fops = {
160	.open		= prism2_wds_proc_open,
161	.read		= seq_read,
162	.llseek		= seq_lseek,
163	.release	= seq_release,
164};
165
166
167static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
168{
169	local_info_t *local = m->private;
170	struct list_head *ptr = v;
171	struct hostap_bss_info *bss;
172
173	if (ptr == &local->bss_list) {
174		seq_printf(m, "#BSSID\tlast_update\tcount\tcapab_info\tSSID(txt)\t"
175			   "SSID(hex)\tWPA IE\n");
176		return 0;
177	}
178
179	bss = list_entry(ptr, struct hostap_bss_info, list);
180	seq_printf(m, "%pM\t%lu\t%u\t0x%x\t",
181		   bss->bssid, bss->last_update,
182		   bss->count, bss->capab_info);
183
184	seq_printf(m, "%*pE", (int)bss->ssid_len, bss->ssid);
185
186	seq_putc(m, '\t');
187	seq_printf(m, "%*phN", (int)bss->ssid_len, bss->ssid);
188	seq_putc(m, '\t');
189	seq_printf(m, "%*phN", (int)bss->wpa_ie_len, bss->wpa_ie);
190	seq_putc(m, '\n');
191	return 0;
192}
193
194static void *prism2_bss_list_proc_start(struct seq_file *m, loff_t *_pos)
195{
196	local_info_t *local = m->private;
197	spin_lock_bh(&local->lock);
198	return seq_list_start_head(&local->bss_list, *_pos);
199}
200
201static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
202{
203	local_info_t *local = m->private;
204	return seq_list_next(v, &local->bss_list, _pos);
205}
206
207static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
208{
209	local_info_t *local = m->private;
210	spin_unlock_bh(&local->lock);
211}
212
213static const struct seq_operations prism2_bss_list_proc_seqops = {
214	.start	= prism2_bss_list_proc_start,
215	.next	= prism2_bss_list_proc_next,
216	.stop	= prism2_bss_list_proc_stop,
217	.show	= prism2_bss_list_proc_show,
218};
219
220static int prism2_bss_list_proc_open(struct inode *inode, struct file *file)
221{
222	int ret = seq_open(file, &prism2_bss_list_proc_seqops);
223	if (ret == 0) {
224		struct seq_file *m = file->private_data;
225		m->private = PDE_DATA(inode);
226	}
227	return ret;
228}
229
230static const struct file_operations prism2_bss_list_proc_fops = {
231	.open		= prism2_bss_list_proc_open,
232	.read		= seq_read,
233	.llseek		= seq_lseek,
234	.release	= seq_release,
235};
236
237
238static int prism2_crypt_proc_show(struct seq_file *m, void *v)
239{
240	local_info_t *local = m->private;
241	int i;
242
243	seq_printf(m, "tx_keyidx=%d\n", local->crypt_info.tx_keyidx);
244	for (i = 0; i < WEP_KEYS; i++) {
245		if (local->crypt_info.crypt[i] &&
246		    local->crypt_info.crypt[i]->ops &&
247		    local->crypt_info.crypt[i]->ops->print_stats) {
248			local->crypt_info.crypt[i]->ops->print_stats(
249				m, local->crypt_info.crypt[i]->priv);
250		}
251	}
252	return 0;
253}
254
255static int prism2_crypt_proc_open(struct inode *inode, struct file *file)
256{
257	return single_open(file, prism2_crypt_proc_show, PDE_DATA(inode));
258}
259
260static const struct file_operations prism2_crypt_proc_fops = {
261	.open		= prism2_crypt_proc_open,
262	.read		= seq_read,
263	.llseek		= seq_lseek,
264	.release	= single_release,
265};
266
267
268static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
269				    size_t count, loff_t *_pos)
270{
271	local_info_t *local = PDE_DATA(file_inode(file));
272	size_t off;
273
274	if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
275		return 0;
276
277	off = *_pos;
278	if (count > PRISM2_PDA_SIZE - off)
279		count = PRISM2_PDA_SIZE - off;
280	if (copy_to_user(buf, local->pda + off, count) != 0)
281		return -EFAULT;
282	*_pos += count;
283	return count;
284}
285
286static const struct file_operations prism2_pda_proc_fops = {
287	.read		= prism2_pda_proc_read,
288	.llseek		= generic_file_llseek,
289};
290
291
292static ssize_t prism2_aux_dump_proc_no_read(struct file *file, char __user *buf,
293					    size_t bufsize, loff_t *_pos)
294{
295	return 0;
296}
297
298static const struct file_operations prism2_aux_dump_proc_fops = {
299	.read		= prism2_aux_dump_proc_no_read,
300};
301
302
303#ifdef PRISM2_IO_DEBUG
304static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
305				     int count, int *eof, void *data)
306{
307	local_info_t *local = (local_info_t *) data;
308	int head = local->io_debug_head;
309	int start_bytes, left, copy, copied;
310
311	if (off + count > PRISM2_IO_DEBUG_SIZE * 4) {
312		*eof = 1;
313		if (off >= PRISM2_IO_DEBUG_SIZE * 4)
314			return 0;
315		count = PRISM2_IO_DEBUG_SIZE * 4 - off;
316	}
317
318	copied = 0;
319	start_bytes = (PRISM2_IO_DEBUG_SIZE - head) * 4;
320	left = count;
321
322	if (off < start_bytes) {
323		copy = start_bytes - off;
324		if (copy > count)
325			copy = count;
326		memcpy(page, ((u8 *) &local->io_debug[head]) + off, copy);
327		left -= copy;
328		if (left > 0)
329			memcpy(&page[copy], local->io_debug, left);
330	} else {
331		memcpy(page, ((u8 *) local->io_debug) + (off - start_bytes),
332		       left);
333	}
334
335	*start = page;
336
337	return count;
338}
339#endif /* PRISM2_IO_DEBUG */
340
341
342#ifndef PRISM2_NO_STATION_MODES
343static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
344{
345	local_info_t *local = m->private;
346	unsigned long entry;
347	int i, len;
348	struct hfa384x_hostscan_result *scanres;
349	u8 *p;
350
351	if (v == SEQ_START_TOKEN) {
352		seq_printf(m,
353			   "CHID ANL SL BcnInt Capab Rate BSSID ATIM SupRates SSID\n");
354		return 0;
355	}
356
357	entry = (unsigned long)v - 2;
358	scanres = &local->last_scan_results[entry];
359
360	seq_printf(m, "%d %d %d %d 0x%02x %d %pM %d ",
361		   le16_to_cpu(scanres->chid),
362		   (s16) le16_to_cpu(scanres->anl),
363		   (s16) le16_to_cpu(scanres->sl),
364		   le16_to_cpu(scanres->beacon_interval),
365		   le16_to_cpu(scanres->capability),
366		   le16_to_cpu(scanres->rate),
367		   scanres->bssid,
368		   le16_to_cpu(scanres->atim));
369
370	p = scanres->sup_rates;
371	for (i = 0; i < sizeof(scanres->sup_rates); i++) {
372		if (p[i] == 0)
373			break;
374		seq_printf(m, "<%02x>", p[i]);
375	}
376	seq_putc(m, ' ');
377
378	p = scanres->ssid;
379	len = le16_to_cpu(scanres->ssid_len);
380	if (len > 32)
381		len = 32;
382	for (i = 0; i < len; i++) {
383		unsigned char c = p[i];
384		if (c >= 32 && c < 127)
385			seq_putc(m, c);
386		else
387			seq_printf(m, "<%02x>", c);
388	}
389	seq_putc(m, '\n');
390	return 0;
391}
392
393static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
394{
395	local_info_t *local = m->private;
396	spin_lock_bh(&local->lock);
397
398	/* We have a header (pos 0) + N results to show (pos 1...N) */
399	if (*_pos > local->last_scan_results_count)
400		return NULL;
401	return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
402}
403
404static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
405{
406	local_info_t *local = m->private;
407
408	++*_pos;
409	if (*_pos > local->last_scan_results_count)
410		return NULL;
411	return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
412}
413
414static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
415{
416	local_info_t *local = m->private;
417	spin_unlock_bh(&local->lock);
418}
419
420static const struct seq_operations prism2_scan_results_proc_seqops = {
421	.start	= prism2_scan_results_proc_start,
422	.next	= prism2_scan_results_proc_next,
423	.stop	= prism2_scan_results_proc_stop,
424	.show	= prism2_scan_results_proc_show,
425};
426
427static int prism2_scan_results_proc_open(struct inode *inode, struct file *file)
428{
429	int ret = seq_open(file, &prism2_scan_results_proc_seqops);
430	if (ret == 0) {
431		struct seq_file *m = file->private_data;
432		m->private = PDE_DATA(inode);
433	}
434	return ret;
435}
436
437static const struct file_operations prism2_scan_results_proc_fops = {
438	.open		= prism2_scan_results_proc_open,
439	.read		= seq_read,
440	.llseek		= seq_lseek,
441	.release	= seq_release,
442};
443
444
445#endif /* PRISM2_NO_STATION_MODES */
446
447
448void hostap_init_proc(local_info_t *local)
449{
450	local->proc = NULL;
451
452	if (hostap_proc == NULL) {
453		printk(KERN_WARNING "%s: hostap proc directory not created\n",
454		       local->dev->name);
455		return;
456	}
457
458	local->proc = proc_mkdir(local->ddev->name, hostap_proc);
459	if (local->proc == NULL) {
460		printk(KERN_INFO "/proc/net/hostap/%s creation failed\n",
461		       local->ddev->name);
462		return;
463	}
464
465#ifndef PRISM2_NO_PROCFS_DEBUG
466	proc_create_data("debug", 0, local->proc,
467			 &prism2_debug_proc_fops, local);
468#endif /* PRISM2_NO_PROCFS_DEBUG */
469	proc_create_data("stats", 0, local->proc,
470			 &prism2_stats_proc_fops, local);
471	proc_create_data("wds", 0, local->proc,
472			 &prism2_wds_proc_fops, local);
473	proc_create_data("pda", 0, local->proc,
474			 &prism2_pda_proc_fops, local);
475	proc_create_data("aux_dump", 0, local->proc,
476			 local->func->read_aux_fops ?: &prism2_aux_dump_proc_fops,
477			 local);
478	proc_create_data("bss_list", 0, local->proc,
479			 &prism2_bss_list_proc_fops, local);
480	proc_create_data("crypt", 0, local->proc,
481			 &prism2_crypt_proc_fops, local);
482#ifdef PRISM2_IO_DEBUG
483	proc_create_data("io_debug", 0, local->proc,
484			 &prism2_io_debug_proc_fops, local);
485#endif /* PRISM2_IO_DEBUG */
486#ifndef PRISM2_NO_STATION_MODES
487	proc_create_data("scan_results", 0, local->proc,
488			 &prism2_scan_results_proc_fops, local);
489#endif /* PRISM2_NO_STATION_MODES */
490}
491
492
493void hostap_remove_proc(local_info_t *local)
494{
495	proc_remove(local->proc);
496}
497
498
499EXPORT_SYMBOL(hostap_init_proc);
500EXPORT_SYMBOL(hostap_remove_proc);