1 /*******************************************************************************
2  *
3  * Intel Ethernet Controller XL710 Family Linux Driver
4  * Copyright(c) 2013 - 2014 Intel Corporation.
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms and conditions of the GNU General Public License,
8  * version 2, as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13  * more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
17  *
18  * The full GNU General Public License is included in this distribution in
19  * the file called "COPYING".
20  *
21  * Contact Information:
22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24  *
25  ******************************************************************************/
26 
27 #ifdef CONFIG_DEBUG_FS
28 
29 #include <linux/fs.h>
30 #include <linux/debugfs.h>
31 
32 #include "i40e.h"
33 
34 static struct dentry *i40e_dbg_root;
35 
36 /**
37  * i40e_dbg_find_vsi - searches for the vsi with the given seid
38  * @pf - the pf structure to search for the vsi
39  * @seid - seid of the vsi it is searching for
40  **/
41 static struct i40e_vsi *i40e_dbg_find_vsi(struct i40e_pf *pf, int seid)
42 {
43 	int i;
44 
45 	if (seid < 0)
46 		dev_info(&pf->pdev->dev, "%d: bad seid\n", seid);
47 	else
48 		for (i = 0; i < pf->num_alloc_vsi; i++)
49 			if (pf->vsi[i] && (pf->vsi[i]->seid == seid))
50 				return pf->vsi[i];
51 
52 	return NULL;
53 }
54 
55 /**
56  * i40e_dbg_find_veb - searches for the veb with the given seid
57  * @pf - the pf structure to search for the veb
58  * @seid - seid of the veb it is searching for
59  **/
60 static struct i40e_veb *i40e_dbg_find_veb(struct i40e_pf *pf, int seid)
61 {
62 	int i;
63 
64 	if ((seid < I40E_BASE_VEB_SEID) ||
65 	    (seid > (I40E_BASE_VEB_SEID + I40E_MAX_VEB)))
66 		dev_info(&pf->pdev->dev, "%d: bad seid\n", seid);
67 	else
68 		for (i = 0; i < I40E_MAX_VEB; i++)
69 			if (pf->veb[i] && pf->veb[i]->seid == seid)
70 				return pf->veb[i];
71 	return NULL;
72 }
73 
74 /**************************************************************
75  * dump
76  * The dump entry in debugfs is for getting a data snapshow of
77  * the driver's current configuration and runtime details.
78  * When the filesystem entry is written, a snapshot is taken.
79  * When the entry is read, the most recent snapshot data is dumped.
80  **************************************************************/
81 static char *i40e_dbg_dump_buf;
82 static ssize_t i40e_dbg_dump_data_len;
83 static ssize_t i40e_dbg_dump_buffer_len;
84 
85 /**
86  * i40e_dbg_dump_read - read the dump data
87  * @filp: the opened file
88  * @buffer: where to write the data for the user to read
89  * @count: the size of the user's buffer
90  * @ppos: file position offset
91  **/
92 static ssize_t i40e_dbg_dump_read(struct file *filp, char __user *buffer,
93 				  size_t count, loff_t *ppos)
94 {
95 	int bytes_not_copied;
96 	int len;
97 
98 	/* is *ppos bigger than the available data? */
99 	if (*ppos >= i40e_dbg_dump_data_len || !i40e_dbg_dump_buf)
100 		return 0;
101 
102 	/* be sure to not read beyond the end of available data */
103 	len = min_t(int, count, (i40e_dbg_dump_data_len - *ppos));
104 
105 	bytes_not_copied = copy_to_user(buffer, &i40e_dbg_dump_buf[*ppos], len);
106 	if (bytes_not_copied < 0)
107 		return bytes_not_copied;
108 
109 	*ppos += len;
110 	return len;
111 }
112 
113 /**
114  * i40e_dbg_prep_dump_buf
115  * @pf: the pf we're working with
116  * @buflen: the desired buffer length
117  *
118  * Return positive if success, 0 if failed
119  **/
120 static int i40e_dbg_prep_dump_buf(struct i40e_pf *pf, int buflen)
121 {
122 	/* if not already big enough, prep for re alloc */
123 	if (i40e_dbg_dump_buffer_len && i40e_dbg_dump_buffer_len < buflen) {
124 		kfree(i40e_dbg_dump_buf);
125 		i40e_dbg_dump_buffer_len = 0;
126 		i40e_dbg_dump_buf = NULL;
127 	}
128 
129 	/* get a new buffer if needed */
130 	if (!i40e_dbg_dump_buf) {
131 		i40e_dbg_dump_buf = kzalloc(buflen, GFP_KERNEL);
132 		if (i40e_dbg_dump_buf != NULL)
133 			i40e_dbg_dump_buffer_len = buflen;
134 	}
135 
136 	return i40e_dbg_dump_buffer_len;
137 }
138 
139 /**
140  * i40e_dbg_dump_write - trigger a datadump snapshot
141  * @filp: the opened file
142  * @buffer: where to find the user's data
143  * @count: the length of the user's data
144  * @ppos: file position offset
145  *
146  * Any write clears the stats
147  **/
148 static ssize_t i40e_dbg_dump_write(struct file *filp,
149 				   const char __user *buffer,
150 				   size_t count, loff_t *ppos)
151 {
152 	struct i40e_pf *pf = filp->private_data;
153 	bool seid_found = false;
154 	long seid = -1;
155 	int buflen = 0;
156 	int i, ret;
157 	int len;
158 	u8 *p;
159 
160 	/* don't allow partial writes */
161 	if (*ppos != 0)
162 		return 0;
163 
164 	/* decode the SEID given to be dumped */
165 	ret = kstrtol_from_user(buffer, count, 0, &seid);
166 
167 	if (ret) {
168 		dev_info(&pf->pdev->dev, "bad seid value\n");
169 	} else if (seid == 0) {
170 		seid_found = true;
171 
172 		kfree(i40e_dbg_dump_buf);
173 		i40e_dbg_dump_buffer_len = 0;
174 		i40e_dbg_dump_data_len = 0;
175 		i40e_dbg_dump_buf = NULL;
176 		dev_info(&pf->pdev->dev, "debug buffer freed\n");
177 
178 	} else if (seid == pf->pf_seid || seid == 1) {
179 		seid_found = true;
180 
181 		buflen = sizeof(struct i40e_pf);
182 		buflen += (sizeof(struct i40e_aq_desc)
183 		     * (pf->hw.aq.num_arq_entries + pf->hw.aq.num_asq_entries));
184 
185 		if (i40e_dbg_prep_dump_buf(pf, buflen)) {
186 			p = i40e_dbg_dump_buf;
187 
188 			len = sizeof(struct i40e_pf);
189 			memcpy(p, pf, len);
190 			p += len;
191 
192 			len = (sizeof(struct i40e_aq_desc)
193 					* pf->hw.aq.num_asq_entries);
194 			memcpy(p, pf->hw.aq.asq.desc_buf.va, len);
195 			p += len;
196 
197 			len = (sizeof(struct i40e_aq_desc)
198 					* pf->hw.aq.num_arq_entries);
199 			memcpy(p, pf->hw.aq.arq.desc_buf.va, len);
200 			p += len;
201 
202 			i40e_dbg_dump_data_len = buflen;
203 			dev_info(&pf->pdev->dev,
204 				 "PF seid %ld dumped %d bytes\n",
205 				 seid, (int)i40e_dbg_dump_data_len);
206 		}
207 	} else if (seid >= I40E_BASE_VSI_SEID) {
208 		struct i40e_vsi *vsi = NULL;
209 		struct i40e_mac_filter *f;
210 		int filter_count = 0;
211 
212 		mutex_lock(&pf->switch_mutex);
213 		vsi = i40e_dbg_find_vsi(pf, seid);
214 		if (!vsi) {
215 			mutex_unlock(&pf->switch_mutex);
216 			goto write_exit;
217 		}
218 
219 		buflen = sizeof(struct i40e_vsi);
220 		buflen += sizeof(struct i40e_q_vector) * vsi->num_q_vectors;
221 		buflen += sizeof(struct i40e_ring) * 2 * vsi->num_queue_pairs;
222 		buflen += sizeof(struct i40e_tx_buffer) * vsi->num_queue_pairs;
223 		buflen += sizeof(struct i40e_rx_buffer) * vsi->num_queue_pairs;
224 		list_for_each_entry(f, &vsi->mac_filter_list, list)
225 			filter_count++;
226 		buflen += sizeof(struct i40e_mac_filter) * filter_count;
227 
228 		if (i40e_dbg_prep_dump_buf(pf, buflen)) {
229 			p = i40e_dbg_dump_buf;
230 			seid_found = true;
231 
232 			len = sizeof(struct i40e_vsi);
233 			memcpy(p, vsi, len);
234 			p += len;
235 
236 			if (vsi->num_q_vectors) {
237 				len = (sizeof(struct i40e_q_vector)
238 					* vsi->num_q_vectors);
239 				memcpy(p, vsi->q_vectors, len);
240 				p += len;
241 			}
242 
243 			if (vsi->num_queue_pairs) {
244 				len = (sizeof(struct i40e_ring) *
245 				      vsi->num_queue_pairs);
246 				memcpy(p, vsi->tx_rings, len);
247 				p += len;
248 				memcpy(p, vsi->rx_rings, len);
249 				p += len;
250 			}
251 
252 			if (vsi->tx_rings[0]) {
253 				len = sizeof(struct i40e_tx_buffer);
254 				for (i = 0; i < vsi->num_queue_pairs; i++) {
255 					memcpy(p, vsi->tx_rings[i]->tx_bi, len);
256 					p += len;
257 				}
258 				len = sizeof(struct i40e_rx_buffer);
259 				for (i = 0; i < vsi->num_queue_pairs; i++) {
260 					memcpy(p, vsi->rx_rings[i]->rx_bi, len);
261 					p += len;
262 				}
263 			}
264 
265 			/* macvlan filter list */
266 			len = sizeof(struct i40e_mac_filter);
267 			list_for_each_entry(f, &vsi->mac_filter_list, list) {
268 				memcpy(p, f, len);
269 				p += len;
270 			}
271 
272 			i40e_dbg_dump_data_len = buflen;
273 			dev_info(&pf->pdev->dev,
274 				 "VSI seid %ld dumped %d bytes\n",
275 				 seid, (int)i40e_dbg_dump_data_len);
276 		}
277 		mutex_unlock(&pf->switch_mutex);
278 	} else if (seid >= I40E_BASE_VEB_SEID) {
279 		struct i40e_veb *veb = NULL;
280 
281 		mutex_lock(&pf->switch_mutex);
282 		veb = i40e_dbg_find_veb(pf, seid);
283 		if (!veb) {
284 			mutex_unlock(&pf->switch_mutex);
285 			goto write_exit;
286 		}
287 
288 		buflen = sizeof(struct i40e_veb);
289 		if (i40e_dbg_prep_dump_buf(pf, buflen)) {
290 			seid_found = true;
291 			memcpy(i40e_dbg_dump_buf, veb, buflen);
292 			i40e_dbg_dump_data_len = buflen;
293 			dev_info(&pf->pdev->dev,
294 				 "VEB seid %ld dumped %d bytes\n",
295 				 seid, (int)i40e_dbg_dump_data_len);
296 		}
297 		mutex_unlock(&pf->switch_mutex);
298 	}
299 
300 write_exit:
301 	if (!seid_found)
302 		dev_info(&pf->pdev->dev, "unknown seid %ld\n", seid);
303 
304 	return count;
305 }
306 
307 static const struct file_operations i40e_dbg_dump_fops = {
308 	.owner = THIS_MODULE,
309 	.open =  simple_open,
310 	.read =  i40e_dbg_dump_read,
311 	.write = i40e_dbg_dump_write,
312 };
313 
314 /**************************************************************
315  * command
316  * The command entry in debugfs is for giving the driver commands
317  * to be executed - these may be for changing the internal switch
318  * setup, adding or removing filters, or other things.  Many of
319  * these will be useful for some forms of unit testing.
320  **************************************************************/
321 static char i40e_dbg_command_buf[256] = "hello world";
322 
323 /**
324  * i40e_dbg_command_read - read for command datum
325  * @filp: the opened file
326  * @buffer: where to write the data for the user to read
327  * @count: the size of the user's buffer
328  * @ppos: file position offset
329  **/
330 static ssize_t i40e_dbg_command_read(struct file *filp, char __user *buffer,
331 				     size_t count, loff_t *ppos)
332 {
333 	struct i40e_pf *pf = filp->private_data;
334 	int bytes_not_copied;
335 	int buf_size = 256;
336 	char *buf;
337 	int len;
338 
339 	/* don't allow partial reads */
340 	if (*ppos != 0)
341 		return 0;
342 	if (count < buf_size)
343 		return -ENOSPC;
344 
345 	buf = kzalloc(buf_size, GFP_KERNEL);
346 	if (!buf)
347 		return -ENOSPC;
348 
349 	len = snprintf(buf, buf_size, "%s: %s\n",
350 		       pf->vsi[pf->lan_vsi]->netdev->name,
351 		       i40e_dbg_command_buf);
352 
353 	bytes_not_copied = copy_to_user(buffer, buf, len);
354 	kfree(buf);
355 
356 	if (bytes_not_copied < 0)
357 		return bytes_not_copied;
358 
359 	*ppos = len;
360 	return len;
361 }
362 
363 /**
364  * i40e_dbg_dump_vsi_seid - handles dump vsi seid write into command datum
365  * @pf: the i40e_pf created in command write
366  * @seid: the seid the user put in
367  **/
368 static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
369 {
370 	struct rtnl_link_stats64 *nstat;
371 	struct i40e_mac_filter *f;
372 	struct i40e_vsi *vsi;
373 	int i;
374 
375 	vsi = i40e_dbg_find_vsi(pf, seid);
376 	if (!vsi) {
377 		dev_info(&pf->pdev->dev,
378 			 "dump %d: seid not found\n", seid);
379 		return;
380 	}
381 	dev_info(&pf->pdev->dev, "vsi seid %d\n", seid);
382 	if (vsi->netdev)
383 		dev_info(&pf->pdev->dev,
384 			 "    netdev: name = %s\n",
385 			 vsi->netdev->name);
386 	if (vsi->active_vlans)
387 		dev_info(&pf->pdev->dev,
388 			 "    vlgrp: & = %p\n", vsi->active_vlans);
389 	dev_info(&pf->pdev->dev,
390 		 "    netdev_registered = %i, current_netdev_flags = 0x%04x, state = %li flags = 0x%08lx\n",
391 		 vsi->netdev_registered,
392 		 vsi->current_netdev_flags, vsi->state, vsi->flags);
393 	list_for_each_entry(f, &vsi->mac_filter_list, list) {
394 		dev_info(&pf->pdev->dev,
395 			 "    mac_filter_list: %pM vid=%d, is_netdev=%d is_vf=%d counter=%d\n",
396 			 f->macaddr, f->vlan, f->is_netdev, f->is_vf,
397 			 f->counter);
398 	}
399 	nstat = i40e_get_vsi_stats_struct(vsi);
400 	dev_info(&pf->pdev->dev,
401 		 "    net_stats: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n",
402 		 (long unsigned int)nstat->rx_packets,
403 		 (long unsigned int)nstat->rx_bytes,
404 		 (long unsigned int)nstat->rx_errors,
405 		 (long unsigned int)nstat->rx_dropped);
406 	dev_info(&pf->pdev->dev,
407 		 "    net_stats: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n",
408 		 (long unsigned int)nstat->tx_packets,
409 		 (long unsigned int)nstat->tx_bytes,
410 		 (long unsigned int)nstat->tx_errors,
411 		 (long unsigned int)nstat->tx_dropped);
412 	dev_info(&pf->pdev->dev,
413 		 "    net_stats: multicast = %lu, collisions = %lu\n",
414 		 (long unsigned int)nstat->multicast,
415 		 (long unsigned int)nstat->collisions);
416 	dev_info(&pf->pdev->dev,
417 		 "    net_stats: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n",
418 		 (long unsigned int)nstat->rx_length_errors,
419 		 (long unsigned int)nstat->rx_over_errors,
420 		 (long unsigned int)nstat->rx_crc_errors);
421 	dev_info(&pf->pdev->dev,
422 		 "    net_stats: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n",
423 		 (long unsigned int)nstat->rx_frame_errors,
424 		 (long unsigned int)nstat->rx_fifo_errors,
425 		 (long unsigned int)nstat->rx_missed_errors);
426 	dev_info(&pf->pdev->dev,
427 		 "    net_stats: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n",
428 		 (long unsigned int)nstat->tx_aborted_errors,
429 		 (long unsigned int)nstat->tx_carrier_errors,
430 		 (long unsigned int)nstat->tx_fifo_errors);
431 	dev_info(&pf->pdev->dev,
432 		 "    net_stats: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n",
433 		 (long unsigned int)nstat->tx_heartbeat_errors,
434 		 (long unsigned int)nstat->tx_window_errors);
435 	dev_info(&pf->pdev->dev,
436 		 "    net_stats: rx_compressed = %lu, tx_compressed = %lu\n",
437 		 (long unsigned int)nstat->rx_compressed,
438 		 (long unsigned int)nstat->tx_compressed);
439 	dev_info(&pf->pdev->dev,
440 		 "    net_stats_offsets: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n",
441 		 (long unsigned int)vsi->net_stats_offsets.rx_packets,
442 		 (long unsigned int)vsi->net_stats_offsets.rx_bytes,
443 		 (long unsigned int)vsi->net_stats_offsets.rx_errors,
444 		 (long unsigned int)vsi->net_stats_offsets.rx_dropped);
445 	dev_info(&pf->pdev->dev,
446 		 "    net_stats_offsets: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n",
447 		 (long unsigned int)vsi->net_stats_offsets.tx_packets,
448 		 (long unsigned int)vsi->net_stats_offsets.tx_bytes,
449 		 (long unsigned int)vsi->net_stats_offsets.tx_errors,
450 		 (long unsigned int)vsi->net_stats_offsets.tx_dropped);
451 	dev_info(&pf->pdev->dev,
452 		 "    net_stats_offsets: multicast = %lu, collisions = %lu\n",
453 		 (long unsigned int)vsi->net_stats_offsets.multicast,
454 		 (long unsigned int)vsi->net_stats_offsets.collisions);
455 	dev_info(&pf->pdev->dev,
456 		 "    net_stats_offsets: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n",
457 		 (long unsigned int)vsi->net_stats_offsets.rx_length_errors,
458 		 (long unsigned int)vsi->net_stats_offsets.rx_over_errors,
459 		 (long unsigned int)vsi->net_stats_offsets.rx_crc_errors);
460 	dev_info(&pf->pdev->dev,
461 		 "    net_stats_offsets: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n",
462 		 (long unsigned int)vsi->net_stats_offsets.rx_frame_errors,
463 		 (long unsigned int)vsi->net_stats_offsets.rx_fifo_errors,
464 		 (long unsigned int)vsi->net_stats_offsets.rx_missed_errors);
465 	dev_info(&pf->pdev->dev,
466 		 "    net_stats_offsets: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n",
467 		 (long unsigned int)vsi->net_stats_offsets.tx_aborted_errors,
468 		 (long unsigned int)vsi->net_stats_offsets.tx_carrier_errors,
469 		 (long unsigned int)vsi->net_stats_offsets.tx_fifo_errors);
470 	dev_info(&pf->pdev->dev,
471 		 "    net_stats_offsets: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n",
472 		 (long unsigned int)vsi->net_stats_offsets.tx_heartbeat_errors,
473 		 (long unsigned int)vsi->net_stats_offsets.tx_window_errors);
474 	dev_info(&pf->pdev->dev,
475 		 "    net_stats_offsets: rx_compressed = %lu, tx_compressed = %lu\n",
476 		 (long unsigned int)vsi->net_stats_offsets.rx_compressed,
477 		 (long unsigned int)vsi->net_stats_offsets.tx_compressed);
478 	dev_info(&pf->pdev->dev,
479 		 "    tx_restart = %d, tx_busy = %d, rx_buf_failed = %d, rx_page_failed = %d\n",
480 		 vsi->tx_restart, vsi->tx_busy,
481 		 vsi->rx_buf_failed, vsi->rx_page_failed);
482 	rcu_read_lock();
483 	for (i = 0; i < vsi->num_queue_pairs; i++) {
484 		struct i40e_ring *rx_ring = ACCESS_ONCE(vsi->rx_rings[i]);
485 		if (!rx_ring)
486 			continue;
487 
488 		dev_info(&pf->pdev->dev,
489 			 "    rx_rings[%i]: desc = %p\n",
490 			 i, rx_ring->desc);
491 		dev_info(&pf->pdev->dev,
492 			 "    rx_rings[%i]: dev = %p, netdev = %p, rx_bi = %p\n",
493 			 i, rx_ring->dev,
494 			 rx_ring->netdev,
495 			 rx_ring->rx_bi);
496 		dev_info(&pf->pdev->dev,
497 			 "    rx_rings[%i]: state = %li, queue_index = %d, reg_idx = %d\n",
498 			 i, rx_ring->state,
499 			 rx_ring->queue_index,
500 			 rx_ring->reg_idx);
501 		dev_info(&pf->pdev->dev,
502 			 "    rx_rings[%i]: rx_hdr_len = %d, rx_buf_len = %d, dtype = %d\n",
503 			 i, rx_ring->rx_hdr_len,
504 			 rx_ring->rx_buf_len,
505 			 rx_ring->dtype);
506 		dev_info(&pf->pdev->dev,
507 			 "    rx_rings[%i]: hsplit = %d, next_to_use = %d, next_to_clean = %d, ring_active = %i\n",
508 			 i, rx_ring->hsplit,
509 			 rx_ring->next_to_use,
510 			 rx_ring->next_to_clean,
511 			 rx_ring->ring_active);
512 		dev_info(&pf->pdev->dev,
513 			 "    rx_rings[%i]: rx_stats: packets = %lld, bytes = %lld, non_eop_descs = %lld\n",
514 			 i, rx_ring->stats.packets,
515 			 rx_ring->stats.bytes,
516 			 rx_ring->rx_stats.non_eop_descs);
517 		dev_info(&pf->pdev->dev,
518 			 "    rx_rings[%i]: rx_stats: alloc_page_failed = %lld, alloc_buff_failed = %lld\n",
519 			 i,
520 			 rx_ring->rx_stats.alloc_page_failed,
521 			 rx_ring->rx_stats.alloc_buff_failed);
522 		dev_info(&pf->pdev->dev,
523 			 "    rx_rings[%i]: size = %i, dma = 0x%08lx\n",
524 			 i, rx_ring->size,
525 			 (long unsigned int)rx_ring->dma);
526 		dev_info(&pf->pdev->dev,
527 			 "    rx_rings[%i]: vsi = %p, q_vector = %p\n",
528 			 i, rx_ring->vsi,
529 			 rx_ring->q_vector);
530 	}
531 	for (i = 0; i < vsi->num_queue_pairs; i++) {
532 		struct i40e_ring *tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
533 		if (!tx_ring)
534 			continue;
535 
536 		dev_info(&pf->pdev->dev,
537 			 "    tx_rings[%i]: desc = %p\n",
538 			 i, tx_ring->desc);
539 		dev_info(&pf->pdev->dev,
540 			 "    tx_rings[%i]: dev = %p, netdev = %p, tx_bi = %p\n",
541 			 i, tx_ring->dev,
542 			 tx_ring->netdev,
543 			 tx_ring->tx_bi);
544 		dev_info(&pf->pdev->dev,
545 			 "    tx_rings[%i]: state = %li, queue_index = %d, reg_idx = %d\n",
546 			 i, tx_ring->state,
547 			 tx_ring->queue_index,
548 			 tx_ring->reg_idx);
549 		dev_info(&pf->pdev->dev,
550 			 "    tx_rings[%i]: dtype = %d\n",
551 			 i, tx_ring->dtype);
552 		dev_info(&pf->pdev->dev,
553 			 "    tx_rings[%i]: hsplit = %d, next_to_use = %d, next_to_clean = %d, ring_active = %i\n",
554 			 i, tx_ring->hsplit,
555 			 tx_ring->next_to_use,
556 			 tx_ring->next_to_clean,
557 			 tx_ring->ring_active);
558 		dev_info(&pf->pdev->dev,
559 			 "    tx_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n",
560 			 i, tx_ring->stats.packets,
561 			 tx_ring->stats.bytes,
562 			 tx_ring->tx_stats.restart_queue);
563 		dev_info(&pf->pdev->dev,
564 			 "    tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n",
565 			 i,
566 			 tx_ring->tx_stats.tx_busy,
567 			 tx_ring->tx_stats.tx_done_old);
568 		dev_info(&pf->pdev->dev,
569 			 "    tx_rings[%i]: size = %i, dma = 0x%08lx\n",
570 			 i, tx_ring->size,
571 			 (long unsigned int)tx_ring->dma);
572 		dev_info(&pf->pdev->dev,
573 			 "    tx_rings[%i]: vsi = %p, q_vector = %p\n",
574 			 i, tx_ring->vsi,
575 			 tx_ring->q_vector);
576 		dev_info(&pf->pdev->dev,
577 			 "    tx_rings[%i]: DCB tc = %d\n",
578 			 i, tx_ring->dcb_tc);
579 	}
580 	rcu_read_unlock();
581 	dev_info(&pf->pdev->dev,
582 		 "    work_limit = %d, rx_itr_setting = %d (%s), tx_itr_setting = %d (%s)\n",
583 		 vsi->work_limit, vsi->rx_itr_setting,
584 		 ITR_IS_DYNAMIC(vsi->rx_itr_setting) ? "dynamic" : "fixed",
585 		 vsi->tx_itr_setting,
586 		 ITR_IS_DYNAMIC(vsi->tx_itr_setting) ? "dynamic" : "fixed");
587 	dev_info(&pf->pdev->dev,
588 		 "    max_frame = %d, rx_hdr_len = %d, rx_buf_len = %d dtype = %d\n",
589 		 vsi->max_frame, vsi->rx_hdr_len, vsi->rx_buf_len, vsi->dtype);
590 	dev_info(&pf->pdev->dev,
591 		 "    num_q_vectors = %i, base_vector = %i\n",
592 		 vsi->num_q_vectors, vsi->base_vector);
593 	dev_info(&pf->pdev->dev,
594 		 "    seid = %d, id = %d, uplink_seid = %d\n",
595 		 vsi->seid, vsi->id, vsi->uplink_seid);
596 	dev_info(&pf->pdev->dev,
597 		 "    base_queue = %d, num_queue_pairs = %d, num_desc = %d\n",
598 		 vsi->base_queue, vsi->num_queue_pairs, vsi->num_desc);
599 	dev_info(&pf->pdev->dev, "    type = %i\n", vsi->type);
600 	dev_info(&pf->pdev->dev,
601 		 "    info: valid_sections = 0x%04x, switch_id = 0x%04x\n",
602 		 vsi->info.valid_sections, vsi->info.switch_id);
603 	dev_info(&pf->pdev->dev,
604 		 "    info: sw_reserved[] = 0x%02x 0x%02x\n",
605 		 vsi->info.sw_reserved[0], vsi->info.sw_reserved[1]);
606 	dev_info(&pf->pdev->dev,
607 		 "    info: sec_flags = 0x%02x, sec_reserved = 0x%02x\n",
608 		 vsi->info.sec_flags, vsi->info.sec_reserved);
609 	dev_info(&pf->pdev->dev,
610 		 "    info: pvid = 0x%04x, fcoe_pvid = 0x%04x, port_vlan_flags = 0x%02x\n",
611 		 vsi->info.pvid, vsi->info.fcoe_pvid,
612 		 vsi->info.port_vlan_flags);
613 	dev_info(&pf->pdev->dev,
614 		 "    info: pvlan_reserved[] = 0x%02x 0x%02x 0x%02x\n",
615 		 vsi->info.pvlan_reserved[0], vsi->info.pvlan_reserved[1],
616 		 vsi->info.pvlan_reserved[2]);
617 	dev_info(&pf->pdev->dev,
618 		 "    info: ingress_table = 0x%08x, egress_table = 0x%08x\n",
619 		 vsi->info.ingress_table, vsi->info.egress_table);
620 	dev_info(&pf->pdev->dev,
621 		 "    info: cas_pv_stag = 0x%04x, cas_pv_flags= 0x%02x, cas_pv_reserved = 0x%02x\n",
622 		 vsi->info.cas_pv_tag, vsi->info.cas_pv_flags,
623 		 vsi->info.cas_pv_reserved);
624 	dev_info(&pf->pdev->dev,
625 		 "    info: queue_mapping[0..7 ] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
626 		 vsi->info.queue_mapping[0], vsi->info.queue_mapping[1],
627 		 vsi->info.queue_mapping[2], vsi->info.queue_mapping[3],
628 		 vsi->info.queue_mapping[4], vsi->info.queue_mapping[5],
629 		 vsi->info.queue_mapping[6], vsi->info.queue_mapping[7]);
630 	dev_info(&pf->pdev->dev,
631 		 "    info: queue_mapping[8..15] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
632 		 vsi->info.queue_mapping[8], vsi->info.queue_mapping[9],
633 		 vsi->info.queue_mapping[10], vsi->info.queue_mapping[11],
634 		 vsi->info.queue_mapping[12], vsi->info.queue_mapping[13],
635 		 vsi->info.queue_mapping[14], vsi->info.queue_mapping[15]);
636 	dev_info(&pf->pdev->dev,
637 		 "    info: tc_mapping[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
638 		 vsi->info.tc_mapping[0], vsi->info.tc_mapping[1],
639 		 vsi->info.tc_mapping[2], vsi->info.tc_mapping[3],
640 		 vsi->info.tc_mapping[4], vsi->info.tc_mapping[5],
641 		 vsi->info.tc_mapping[6], vsi->info.tc_mapping[7]);
642 	dev_info(&pf->pdev->dev,
643 		 "    info: queueing_opt_flags = 0x%02x  queueing_opt_reserved[0..2] = 0x%02x 0x%02x 0x%02x\n",
644 		 vsi->info.queueing_opt_flags,
645 		 vsi->info.queueing_opt_reserved[0],
646 		 vsi->info.queueing_opt_reserved[1],
647 		 vsi->info.queueing_opt_reserved[2]);
648 	dev_info(&pf->pdev->dev,
649 		 "    info: up_enable_bits = 0x%02x\n",
650 		 vsi->info.up_enable_bits);
651 	dev_info(&pf->pdev->dev,
652 		 "    info: sched_reserved = 0x%02x, outer_up_table = 0x%04x\n",
653 		 vsi->info.sched_reserved, vsi->info.outer_up_table);
654 	dev_info(&pf->pdev->dev,
655 		 "    info: cmd_reserved[] = 0x%02x 0x%02x 0x%02x 0x0%02x 0x%02x 0x%02x 0x%02x 0x0%02x\n",
656 		 vsi->info.cmd_reserved[0], vsi->info.cmd_reserved[1],
657 		 vsi->info.cmd_reserved[2], vsi->info.cmd_reserved[3],
658 		 vsi->info.cmd_reserved[4], vsi->info.cmd_reserved[5],
659 		 vsi->info.cmd_reserved[6], vsi->info.cmd_reserved[7]);
660 	dev_info(&pf->pdev->dev,
661 		 "    info: qs_handle[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
662 		 vsi->info.qs_handle[0], vsi->info.qs_handle[1],
663 		 vsi->info.qs_handle[2], vsi->info.qs_handle[3],
664 		 vsi->info.qs_handle[4], vsi->info.qs_handle[5],
665 		 vsi->info.qs_handle[6], vsi->info.qs_handle[7]);
666 	dev_info(&pf->pdev->dev,
667 		 "    info: stat_counter_idx = 0x%04x, sched_id = 0x%04x\n",
668 		 vsi->info.stat_counter_idx, vsi->info.sched_id);
669 	dev_info(&pf->pdev->dev,
670 		 "    info: resp_reserved[] = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n",
671 		 vsi->info.resp_reserved[0], vsi->info.resp_reserved[1],
672 		 vsi->info.resp_reserved[2], vsi->info.resp_reserved[3],
673 		 vsi->info.resp_reserved[4], vsi->info.resp_reserved[5],
674 		 vsi->info.resp_reserved[6], vsi->info.resp_reserved[7],
675 		 vsi->info.resp_reserved[8], vsi->info.resp_reserved[9],
676 		 vsi->info.resp_reserved[10], vsi->info.resp_reserved[11]);
677 	if (vsi->back)
678 		dev_info(&pf->pdev->dev, "    pf = %p\n", vsi->back);
679 	dev_info(&pf->pdev->dev, "    idx = %d\n", vsi->idx);
680 	dev_info(&pf->pdev->dev,
681 		 "    tc_config: numtc = %d, enabled_tc = 0x%x\n",
682 		 vsi->tc_config.numtc, vsi->tc_config.enabled_tc);
683 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
684 		dev_info(&pf->pdev->dev,
685 			 "    tc_config: tc = %d, qoffset = %d, qcount = %d, netdev_tc = %d\n",
686 			 i, vsi->tc_config.tc_info[i].qoffset,
687 			 vsi->tc_config.tc_info[i].qcount,
688 			 vsi->tc_config.tc_info[i].netdev_tc);
689 	}
690 	dev_info(&pf->pdev->dev,
691 		 "    bw: bw_limit = %d, bw_max_quanta = %d\n",
692 		 vsi->bw_limit, vsi->bw_max_quanta);
693 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
694 		dev_info(&pf->pdev->dev,
695 			 "    bw[%d]: ets_share_credits = %d, ets_limit_credits = %d, max_quanta = %d\n",
696 			 i, vsi->bw_ets_share_credits[i],
697 			 vsi->bw_ets_limit_credits[i],
698 			 vsi->bw_ets_max_quanta[i]);
699 	}
700 }
701 
702 /**
703  * i40e_dbg_dump_aq_desc - handles dump aq_desc write into command datum
704  * @pf: the i40e_pf created in command write
705  **/
706 static void i40e_dbg_dump_aq_desc(struct i40e_pf *pf)
707 {
708 	struct i40e_adminq_ring *ring;
709 	struct i40e_hw *hw = &pf->hw;
710 	char hdr[32];
711 	int i;
712 
713 	snprintf(hdr, sizeof(hdr), "%s %s:         ",
714 		 dev_driver_string(&pf->pdev->dev),
715 		 dev_name(&pf->pdev->dev));
716 
717 	/* first the send (command) ring, then the receive (event) ring */
718 	dev_info(&pf->pdev->dev, "AdminQ Tx Ring\n");
719 	ring = &(hw->aq.asq);
720 	for (i = 0; i < ring->count; i++) {
721 		struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
722 		dev_info(&pf->pdev->dev,
723 			 "   at[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
724 			 i, d->flags, d->opcode, d->datalen, d->retval,
725 			 d->cookie_high, d->cookie_low);
726 		print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
727 			       16, 1, d->params.raw, 16, 0);
728 	}
729 
730 	dev_info(&pf->pdev->dev, "AdminQ Rx Ring\n");
731 	ring = &(hw->aq.arq);
732 	for (i = 0; i < ring->count; i++) {
733 		struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
734 		dev_info(&pf->pdev->dev,
735 			 "   ar[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
736 			 i, d->flags, d->opcode, d->datalen, d->retval,
737 			 d->cookie_high, d->cookie_low);
738 		print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
739 			       16, 1, d->params.raw, 16, 0);
740 	}
741 }
742 
743 /**
744  * i40e_dbg_dump_desc - handles dump desc write into command datum
745  * @cnt: number of arguments that the user supplied
746  * @vsi_seid: vsi id entered by user
747  * @ring_id: ring id entered by user
748  * @desc_n: descriptor number entered by user
749  * @pf: the i40e_pf created in command write
750  * @is_rx_ring: true if rx, false if tx
751  **/
752 static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
753 			       struct i40e_pf *pf, bool is_rx_ring)
754 {
755 	struct i40e_tx_desc *txd;
756 	union i40e_rx_desc *rxd;
757 	struct i40e_ring ring;
758 	struct i40e_vsi *vsi;
759 	int i;
760 
761 	vsi = i40e_dbg_find_vsi(pf, vsi_seid);
762 	if (!vsi) {
763 		dev_info(&pf->pdev->dev, "vsi %d not found\n", vsi_seid);
764 		return;
765 	}
766 	if (ring_id >= vsi->num_queue_pairs || ring_id < 0) {
767 		dev_info(&pf->pdev->dev, "ring %d not found\n", ring_id);
768 		return;
769 	}
770 	if (!vsi->tx_rings || !vsi->tx_rings[0]->desc) {
771 		dev_info(&pf->pdev->dev,
772 			 "descriptor rings have not been allocated for vsi %d\n",
773 			 vsi_seid);
774 		return;
775 	}
776 	if (is_rx_ring)
777 		ring = *vsi->rx_rings[ring_id];
778 	else
779 		ring = *vsi->tx_rings[ring_id];
780 	if (cnt == 2) {
781 		dev_info(&pf->pdev->dev, "vsi = %02i %s ring = %02i\n",
782 			 vsi_seid, is_rx_ring ? "rx" : "tx", ring_id);
783 		for (i = 0; i < ring.count; i++) {
784 			if (!is_rx_ring) {
785 				txd = I40E_TX_DESC(&ring, i);
786 				dev_info(&pf->pdev->dev,
787 					 "   d[%03i] = 0x%016llx 0x%016llx\n",
788 					 i, txd->buffer_addr,
789 					 txd->cmd_type_offset_bsz);
790 			} else if (sizeof(union i40e_rx_desc) ==
791 				   sizeof(union i40e_16byte_rx_desc)) {
792 				rxd = I40E_RX_DESC(&ring, i);
793 				dev_info(&pf->pdev->dev,
794 					 "   d[%03i] = 0x%016llx 0x%016llx\n",
795 					 i, rxd->read.pkt_addr,
796 					 rxd->read.hdr_addr);
797 			} else {
798 				rxd = I40E_RX_DESC(&ring, i);
799 				dev_info(&pf->pdev->dev,
800 					 "   d[%03i] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
801 					 i, rxd->read.pkt_addr,
802 					 rxd->read.hdr_addr,
803 					 rxd->read.rsvd1, rxd->read.rsvd2);
804 			}
805 		}
806 	} else if (cnt == 3) {
807 		if (desc_n >= ring.count || desc_n < 0) {
808 			dev_info(&pf->pdev->dev,
809 				 "descriptor %d not found\n", desc_n);
810 			return;
811 		}
812 		if (!is_rx_ring) {
813 			txd = I40E_TX_DESC(&ring, desc_n);
814 			dev_info(&pf->pdev->dev,
815 				 "vsi = %02i tx ring = %02i d[%03i] = 0x%016llx 0x%016llx\n",
816 				 vsi_seid, ring_id, desc_n,
817 				 txd->buffer_addr, txd->cmd_type_offset_bsz);
818 		} else if (sizeof(union i40e_rx_desc) ==
819 			   sizeof(union i40e_16byte_rx_desc)) {
820 			rxd = I40E_RX_DESC(&ring, desc_n);
821 			dev_info(&pf->pdev->dev,
822 				 "vsi = %02i rx ring = %02i d[%03i] = 0x%016llx 0x%016llx\n",
823 				 vsi_seid, ring_id, desc_n,
824 				 rxd->read.pkt_addr, rxd->read.hdr_addr);
825 		} else {
826 			rxd = I40E_RX_DESC(&ring, desc_n);
827 			dev_info(&pf->pdev->dev,
828 				 "vsi = %02i rx ring = %02i d[%03i] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
829 				 vsi_seid, ring_id, desc_n,
830 				 rxd->read.pkt_addr, rxd->read.hdr_addr,
831 				 rxd->read.rsvd1, rxd->read.rsvd2);
832 		}
833 	} else {
834 		dev_info(&pf->pdev->dev, "dump desc rx/tx <vsi_seid> <ring_id> [<desc_n>]\n");
835 	}
836 }
837 
838 /**
839  * i40e_dbg_dump_vsi_no_seid - handles dump vsi write into command datum
840  * @pf: the i40e_pf created in command write
841  **/
842 static void i40e_dbg_dump_vsi_no_seid(struct i40e_pf *pf)
843 {
844 	int i;
845 
846 	for (i = 0; i < pf->num_alloc_vsi; i++)
847 		if (pf->vsi[i])
848 			dev_info(&pf->pdev->dev, "dump vsi[%d]: %d\n",
849 				 i, pf->vsi[i]->seid);
850 }
851 
852 /**
853  * i40e_dbg_dump_stats - handles dump stats write into command datum
854  * @pf: the i40e_pf created in command write
855  * @estats: the eth stats structure to be dumped
856  **/
857 static void i40e_dbg_dump_eth_stats(struct i40e_pf *pf,
858 				    struct i40e_eth_stats *estats)
859 {
860 	dev_info(&pf->pdev->dev, "  ethstats:\n");
861 	dev_info(&pf->pdev->dev,
862 		 "    rx_bytes = \t%lld \trx_unicast = \t\t%lld \trx_multicast = \t%lld\n",
863 		estats->rx_bytes, estats->rx_unicast, estats->rx_multicast);
864 	dev_info(&pf->pdev->dev,
865 		 "    rx_broadcast = \t%lld \trx_discards = \t\t%lld\n",
866 		 estats->rx_broadcast, estats->rx_discards);
867 	dev_info(&pf->pdev->dev,
868 		 "    rx_unknown_protocol = \t%lld \ttx_bytes = \t%lld\n",
869 		 estats->rx_unknown_protocol, estats->tx_bytes);
870 	dev_info(&pf->pdev->dev,
871 		 "    tx_unicast = \t%lld \ttx_multicast = \t\t%lld \ttx_broadcast = \t%lld\n",
872 		 estats->tx_unicast, estats->tx_multicast, estats->tx_broadcast);
873 	dev_info(&pf->pdev->dev,
874 		 "    tx_discards = \t%lld \ttx_errors = \t\t%lld\n",
875 		 estats->tx_discards, estats->tx_errors);
876 }
877 
878 /**
879  * i40e_dbg_dump_stats - handles dump stats write into command datum
880  * @pf: the i40e_pf created in command write
881  * @stats: the stats structure to be dumped
882  **/
883 static void i40e_dbg_dump_stats(struct i40e_pf *pf,
884 				struct i40e_hw_port_stats *stats)
885 {
886 	int i;
887 
888 	dev_info(&pf->pdev->dev, "  stats:\n");
889 	dev_info(&pf->pdev->dev,
890 		 "    crc_errors = \t\t%lld \tillegal_bytes = \t%lld \terror_bytes = \t\t%lld\n",
891 		 stats->crc_errors, stats->illegal_bytes, stats->error_bytes);
892 	dev_info(&pf->pdev->dev,
893 		 "    mac_local_faults = \t%lld \tmac_remote_faults = \t%lld \trx_length_errors = \t%lld\n",
894 		 stats->mac_local_faults, stats->mac_remote_faults,
895 		 stats->rx_length_errors);
896 	dev_info(&pf->pdev->dev,
897 		 "    link_xon_rx = \t\t%lld \tlink_xoff_rx = \t\t%lld \tlink_xon_tx = \t\t%lld\n",
898 		 stats->link_xon_rx, stats->link_xoff_rx, stats->link_xon_tx);
899 	dev_info(&pf->pdev->dev,
900 		 "    link_xoff_tx = \t\t%lld \trx_size_64 = \t\t%lld \trx_size_127 = \t\t%lld\n",
901 		 stats->link_xoff_tx, stats->rx_size_64, stats->rx_size_127);
902 	dev_info(&pf->pdev->dev,
903 		 "    rx_size_255 = \t\t%lld \trx_size_511 = \t\t%lld \trx_size_1023 = \t\t%lld\n",
904 		 stats->rx_size_255, stats->rx_size_511, stats->rx_size_1023);
905 	dev_info(&pf->pdev->dev,
906 		 "    rx_size_big = \t\t%lld \trx_undersize = \t\t%lld \trx_jabber = \t\t%lld\n",
907 		 stats->rx_size_big, stats->rx_undersize, stats->rx_jabber);
908 	dev_info(&pf->pdev->dev,
909 		 "    rx_fragments = \t\t%lld \trx_oversize = \t\t%lld \ttx_size_64 = \t\t%lld\n",
910 		 stats->rx_fragments, stats->rx_oversize, stats->tx_size_64);
911 	dev_info(&pf->pdev->dev,
912 		 "    tx_size_127 = \t\t%lld \ttx_size_255 = \t\t%lld \ttx_size_511 = \t\t%lld\n",
913 		 stats->tx_size_127, stats->tx_size_255, stats->tx_size_511);
914 	dev_info(&pf->pdev->dev,
915 		 "    tx_size_1023 = \t\t%lld \ttx_size_big = \t\t%lld \tmac_short_packet_dropped = \t%lld\n",
916 		 stats->tx_size_1023, stats->tx_size_big,
917 		 stats->mac_short_packet_dropped);
918 	for (i = 0; i < 8; i += 4) {
919 		dev_info(&pf->pdev->dev,
920 			 "    priority_xon_rx[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld\n",
921 			 i, stats->priority_xon_rx[i],
922 			 i+1, stats->priority_xon_rx[i+1],
923 			 i+2, stats->priority_xon_rx[i+2],
924 			 i+3, stats->priority_xon_rx[i+3]);
925 	}
926 	for (i = 0; i < 8; i += 4) {
927 		dev_info(&pf->pdev->dev,
928 			 "    priority_xoff_rx[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld\n",
929 			 i, stats->priority_xoff_rx[i],
930 			 i+1, stats->priority_xoff_rx[i+1],
931 			 i+2, stats->priority_xoff_rx[i+2],
932 			 i+3, stats->priority_xoff_rx[i+3]);
933 	}
934 	for (i = 0; i < 8; i += 4) {
935 		dev_info(&pf->pdev->dev,
936 			 "    priority_xon_tx[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld\n",
937 			 i, stats->priority_xon_tx[i],
938 			 i+1, stats->priority_xon_tx[i+1],
939 			 i+2, stats->priority_xon_tx[i+2],
940 			 i+3, stats->priority_xon_rx[i+3]);
941 	}
942 	for (i = 0; i < 8; i += 4) {
943 		dev_info(&pf->pdev->dev,
944 			 "    priority_xoff_tx[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld\n",
945 			 i, stats->priority_xoff_tx[i],
946 			 i+1, stats->priority_xoff_tx[i+1],
947 			 i+2, stats->priority_xoff_tx[i+2],
948 			 i+3, stats->priority_xoff_tx[i+3]);
949 	}
950 	for (i = 0; i < 8; i += 4) {
951 		dev_info(&pf->pdev->dev,
952 			 "    priority_xon_2_xoff[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld \t[%d] = \t%lld\n",
953 			 i, stats->priority_xon_2_xoff[i],
954 			 i+1, stats->priority_xon_2_xoff[i+1],
955 			 i+2, stats->priority_xon_2_xoff[i+2],
956 			 i+3, stats->priority_xon_2_xoff[i+3]);
957 	}
958 
959 	i40e_dbg_dump_eth_stats(pf, &stats->eth);
960 }
961 
962 /**
963  * i40e_dbg_dump_veb_seid - handles dump stats of a single given veb
964  * @pf: the i40e_pf created in command write
965  * @seid: the seid the user put in
966  **/
967 static void i40e_dbg_dump_veb_seid(struct i40e_pf *pf, int seid)
968 {
969 	struct i40e_veb *veb;
970 
971 	if ((seid < I40E_BASE_VEB_SEID) ||
972 	    (seid >= (I40E_MAX_VEB + I40E_BASE_VEB_SEID))) {
973 		dev_info(&pf->pdev->dev, "%d: bad seid\n", seid);
974 		return;
975 	}
976 
977 	veb = i40e_dbg_find_veb(pf, seid);
978 	if (!veb) {
979 		dev_info(&pf->pdev->dev, "can't find veb %d\n", seid);
980 		return;
981 	}
982 	dev_info(&pf->pdev->dev,
983 		 "veb idx=%d,%d stats_ic=%d  seid=%d uplink=%d\n",
984 		 veb->idx, veb->veb_idx, veb->stats_idx, veb->seid,
985 		 veb->uplink_seid);
986 	i40e_dbg_dump_eth_stats(pf, &veb->stats);
987 }
988 
989 /**
990  * i40e_dbg_dump_veb_all - dumps all known veb's stats
991  * @pf: the i40e_pf created in command write
992  **/
993 static void i40e_dbg_dump_veb_all(struct i40e_pf *pf)
994 {
995 	struct i40e_veb *veb;
996 	int i;
997 
998 	for (i = 0; i < I40E_MAX_VEB; i++) {
999 		veb = pf->veb[i];
1000 		if (veb)
1001 			i40e_dbg_dump_veb_seid(pf, veb->seid);
1002 	}
1003 }
1004 
1005 /**
1006  * i40e_dbg_cmd_fd_ctrl - Enable/disable FD sideband/ATR
1007  * @pf: the pf that would be altered
1008  * @flag: flag that needs enabling or disabling
1009  * @enable: Enable/disable FD SD/ATR
1010  **/
1011 static void i40e_dbg_cmd_fd_ctrl(struct i40e_pf *pf, u64 flag, bool enable)
1012 {
1013 	if (enable) {
1014 		pf->flags |= flag;
1015 	} else {
1016 		pf->flags &= ~flag;
1017 		pf->auto_disable_flags |= flag;
1018 	}
1019 	dev_info(&pf->pdev->dev, "requesting a pf reset\n");
1020 	i40e_do_reset_safe(pf, (1 << __I40E_PF_RESET_REQUESTED));
1021 }
1022 
1023 #define I40E_MAX_DEBUG_OUT_BUFFER (4096*4)
1024 /**
1025  * i40e_dbg_command_write - write into command datum
1026  * @filp: the opened file
1027  * @buffer: where to find the user's data
1028  * @count: the length of the user's data
1029  * @ppos: file position offset
1030  **/
1031 static ssize_t i40e_dbg_command_write(struct file *filp,
1032 				      const char __user *buffer,
1033 				      size_t count, loff_t *ppos)
1034 {
1035 	struct i40e_pf *pf = filp->private_data;
1036 	char *cmd_buf, *cmd_buf_tmp;
1037 	int bytes_not_copied;
1038 	struct i40e_vsi *vsi;
1039 	int vsi_seid;
1040 	int veb_seid;
1041 	int cnt;
1042 
1043 	/* don't allow partial writes */
1044 	if (*ppos != 0)
1045 		return 0;
1046 
1047 	cmd_buf = kzalloc(count + 1, GFP_KERNEL);
1048 	if (!cmd_buf)
1049 		return count;
1050 	bytes_not_copied = copy_from_user(cmd_buf, buffer, count);
1051 	if (bytes_not_copied < 0)
1052 		return bytes_not_copied;
1053 	if (bytes_not_copied > 0)
1054 		count -= bytes_not_copied;
1055 	cmd_buf[count] = '\0';
1056 
1057 	cmd_buf_tmp = strchr(cmd_buf, '\n');
1058 	if (cmd_buf_tmp) {
1059 		*cmd_buf_tmp = '\0';
1060 		count = cmd_buf_tmp - cmd_buf + 1;
1061 	}
1062 
1063 	if (strncmp(cmd_buf, "add vsi", 7) == 0) {
1064 		vsi_seid = -1;
1065 		cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid);
1066 		if (cnt == 0) {
1067 			/* default to PF VSI */
1068 			vsi_seid = pf->vsi[pf->lan_vsi]->seid;
1069 		} else if (vsi_seid < 0) {
1070 			dev_info(&pf->pdev->dev, "add VSI %d: bad vsi seid\n",
1071 				 vsi_seid);
1072 			goto command_write_done;
1073 		}
1074 
1075 		vsi = i40e_vsi_setup(pf, I40E_VSI_VMDQ2, vsi_seid, 0);
1076 		if (vsi)
1077 			dev_info(&pf->pdev->dev, "added VSI %d to relay %d\n",
1078 				 vsi->seid, vsi->uplink_seid);
1079 		else
1080 			dev_info(&pf->pdev->dev, "'%s' failed\n", cmd_buf);
1081 
1082 	} else if (strncmp(cmd_buf, "del vsi", 7) == 0) {
1083 		sscanf(&cmd_buf[7], "%i", &vsi_seid);
1084 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1085 		if (!vsi) {
1086 			dev_info(&pf->pdev->dev, "del VSI %d: seid not found\n",
1087 				 vsi_seid);
1088 			goto command_write_done;
1089 		}
1090 
1091 		dev_info(&pf->pdev->dev, "deleting VSI %d\n", vsi_seid);
1092 		i40e_vsi_release(vsi);
1093 
1094 	} else if (strncmp(cmd_buf, "add relay", 9) == 0) {
1095 		struct i40e_veb *veb;
1096 		int uplink_seid, i;
1097 
1098 		cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid);
1099 		if (cnt != 2) {
1100 			dev_info(&pf->pdev->dev,
1101 				 "add relay: bad command string, cnt=%d\n",
1102 				 cnt);
1103 			goto command_write_done;
1104 		} else if (uplink_seid < 0) {
1105 			dev_info(&pf->pdev->dev,
1106 				 "add relay %d: bad uplink seid\n",
1107 				 uplink_seid);
1108 			goto command_write_done;
1109 		}
1110 
1111 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1112 		if (!vsi) {
1113 			dev_info(&pf->pdev->dev,
1114 				 "add relay: VSI %d not found\n", vsi_seid);
1115 			goto command_write_done;
1116 		}
1117 
1118 		for (i = 0; i < I40E_MAX_VEB; i++)
1119 			if (pf->veb[i] && pf->veb[i]->seid == uplink_seid)
1120 				break;
1121 		if (i >= I40E_MAX_VEB && uplink_seid != 0 &&
1122 		    uplink_seid != pf->mac_seid) {
1123 			dev_info(&pf->pdev->dev,
1124 				 "add relay: relay uplink %d not found\n",
1125 				 uplink_seid);
1126 			goto command_write_done;
1127 		}
1128 
1129 		veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid,
1130 				     vsi->tc_config.enabled_tc);
1131 		if (veb)
1132 			dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid);
1133 		else
1134 			dev_info(&pf->pdev->dev, "add relay failed\n");
1135 
1136 	} else if (strncmp(cmd_buf, "del relay", 9) == 0) {
1137 		int i;
1138 		cnt = sscanf(&cmd_buf[9], "%i", &veb_seid);
1139 		if (cnt != 1) {
1140 			dev_info(&pf->pdev->dev,
1141 				 "del relay: bad command string, cnt=%d\n",
1142 				 cnt);
1143 			goto command_write_done;
1144 		} else if (veb_seid < 0) {
1145 			dev_info(&pf->pdev->dev,
1146 				 "del relay %d: bad relay seid\n", veb_seid);
1147 			goto command_write_done;
1148 		}
1149 
1150 		/* find the veb */
1151 		for (i = 0; i < I40E_MAX_VEB; i++)
1152 			if (pf->veb[i] && pf->veb[i]->seid == veb_seid)
1153 				break;
1154 		if (i >= I40E_MAX_VEB) {
1155 			dev_info(&pf->pdev->dev,
1156 				 "del relay: relay %d not found\n", veb_seid);
1157 			goto command_write_done;
1158 		}
1159 
1160 		dev_info(&pf->pdev->dev, "deleting relay %d\n", veb_seid);
1161 		i40e_veb_release(pf->veb[i]);
1162 
1163 	} else if (strncmp(cmd_buf, "add macaddr", 11) == 0) {
1164 		struct i40e_mac_filter *f;
1165 		int vlan = 0;
1166 		u8 ma[6];
1167 		int ret;
1168 
1169 		cnt = sscanf(&cmd_buf[11],
1170 			     "%i %hhx:%hhx:%hhx:%hhx:%hhx:%hhx %i",
1171 			     &vsi_seid,
1172 			     &ma[0], &ma[1], &ma[2], &ma[3], &ma[4], &ma[5],
1173 			     &vlan);
1174 		if (cnt == 7) {
1175 			vlan = 0;
1176 		} else if (cnt != 8) {
1177 			dev_info(&pf->pdev->dev,
1178 				 "add macaddr: bad command string, cnt=%d\n",
1179 				 cnt);
1180 			goto command_write_done;
1181 		}
1182 
1183 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1184 		if (!vsi) {
1185 			dev_info(&pf->pdev->dev,
1186 				 "add macaddr: VSI %d not found\n", vsi_seid);
1187 			goto command_write_done;
1188 		}
1189 
1190 		f = i40e_add_filter(vsi, ma, vlan, false, false);
1191 		ret = i40e_sync_vsi_filters(vsi);
1192 		if (f && !ret)
1193 			dev_info(&pf->pdev->dev,
1194 				 "add macaddr: %pM vlan=%d added to VSI %d\n",
1195 				 ma, vlan, vsi_seid);
1196 		else
1197 			dev_info(&pf->pdev->dev,
1198 				 "add macaddr: %pM vlan=%d to VSI %d failed, f=%p ret=%d\n",
1199 				 ma, vlan, vsi_seid, f, ret);
1200 
1201 	} else if (strncmp(cmd_buf, "del macaddr", 11) == 0) {
1202 		int vlan = 0;
1203 		u8 ma[6];
1204 		int ret;
1205 
1206 		cnt = sscanf(&cmd_buf[11],
1207 			     "%i %hhx:%hhx:%hhx:%hhx:%hhx:%hhx %i",
1208 			     &vsi_seid,
1209 			     &ma[0], &ma[1], &ma[2], &ma[3], &ma[4], &ma[5],
1210 			     &vlan);
1211 		if (cnt == 7) {
1212 			vlan = 0;
1213 		} else if (cnt != 8) {
1214 			dev_info(&pf->pdev->dev,
1215 				 "del macaddr: bad command string, cnt=%d\n",
1216 				 cnt);
1217 			goto command_write_done;
1218 		}
1219 
1220 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1221 		if (!vsi) {
1222 			dev_info(&pf->pdev->dev,
1223 				 "del macaddr: VSI %d not found\n", vsi_seid);
1224 			goto command_write_done;
1225 		}
1226 
1227 		i40e_del_filter(vsi, ma, vlan, false, false);
1228 		ret = i40e_sync_vsi_filters(vsi);
1229 		if (!ret)
1230 			dev_info(&pf->pdev->dev,
1231 				 "del macaddr: %pM vlan=%d removed from VSI %d\n",
1232 				 ma, vlan, vsi_seid);
1233 		else
1234 			dev_info(&pf->pdev->dev,
1235 				 "del macaddr: %pM vlan=%d from VSI %d failed, ret=%d\n",
1236 				 ma, vlan, vsi_seid, ret);
1237 
1238 	} else if (strncmp(cmd_buf, "add pvid", 8) == 0) {
1239 		i40e_status ret;
1240 		u16 vid;
1241 		int v;
1242 
1243 		cnt = sscanf(&cmd_buf[8], "%i %u", &vsi_seid, &v);
1244 		if (cnt != 2) {
1245 			dev_info(&pf->pdev->dev,
1246 				 "add pvid: bad command string, cnt=%d\n", cnt);
1247 			goto command_write_done;
1248 		}
1249 
1250 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1251 		if (!vsi) {
1252 			dev_info(&pf->pdev->dev, "add pvid: VSI %d not found\n",
1253 				 vsi_seid);
1254 			goto command_write_done;
1255 		}
1256 
1257 		vid = (unsigned)v;
1258 		ret = i40e_vsi_add_pvid(vsi, vid);
1259 		if (!ret)
1260 			dev_info(&pf->pdev->dev,
1261 				 "add pvid: %d added to VSI %d\n",
1262 				 vid, vsi_seid);
1263 		else
1264 			dev_info(&pf->pdev->dev,
1265 				 "add pvid: %d to VSI %d failed, ret=%d\n",
1266 				 vid, vsi_seid, ret);
1267 
1268 	} else if (strncmp(cmd_buf, "del pvid", 8) == 0) {
1269 
1270 		cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1271 		if (cnt != 1) {
1272 			dev_info(&pf->pdev->dev,
1273 				 "del pvid: bad command string, cnt=%d\n",
1274 				 cnt);
1275 			goto command_write_done;
1276 		}
1277 
1278 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1279 		if (!vsi) {
1280 			dev_info(&pf->pdev->dev,
1281 				 "del pvid: VSI %d not found\n", vsi_seid);
1282 			goto command_write_done;
1283 		}
1284 
1285 		i40e_vsi_remove_pvid(vsi);
1286 		dev_info(&pf->pdev->dev,
1287 			 "del pvid: removed from VSI %d\n", vsi_seid);
1288 
1289 	} else if (strncmp(cmd_buf, "dump", 4) == 0) {
1290 		if (strncmp(&cmd_buf[5], "switch", 6) == 0) {
1291 			i40e_fetch_switch_configuration(pf, true);
1292 		} else if (strncmp(&cmd_buf[5], "vsi", 3) == 0) {
1293 			cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1294 			if (cnt > 0)
1295 				i40e_dbg_dump_vsi_seid(pf, vsi_seid);
1296 			else
1297 				i40e_dbg_dump_vsi_no_seid(pf);
1298 		} else if (strncmp(&cmd_buf[5], "veb", 3) == 0) {
1299 			cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1300 			if (cnt > 0)
1301 				i40e_dbg_dump_veb_seid(pf, vsi_seid);
1302 			else
1303 				i40e_dbg_dump_veb_all(pf);
1304 		} else if (strncmp(&cmd_buf[5], "desc", 4) == 0) {
1305 			int ring_id, desc_n;
1306 			if (strncmp(&cmd_buf[10], "rx", 2) == 0) {
1307 				cnt = sscanf(&cmd_buf[12], "%i %i %i",
1308 					     &vsi_seid, &ring_id, &desc_n);
1309 				i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
1310 						   desc_n, pf, true);
1311 			} else if (strncmp(&cmd_buf[10], "tx", 2)
1312 					== 0) {
1313 				cnt = sscanf(&cmd_buf[12], "%i %i %i",
1314 					     &vsi_seid, &ring_id, &desc_n);
1315 				i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
1316 						   desc_n, pf, false);
1317 			} else if (strncmp(&cmd_buf[10], "aq", 2) == 0) {
1318 				i40e_dbg_dump_aq_desc(pf);
1319 			} else {
1320 				dev_info(&pf->pdev->dev,
1321 					 "dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
1322 				dev_info(&pf->pdev->dev,
1323 					 "dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
1324 				dev_info(&pf->pdev->dev, "dump desc aq\n");
1325 			}
1326 		} else if (strncmp(&cmd_buf[5], "stats", 5) == 0) {
1327 			dev_info(&pf->pdev->dev, "pf stats:\n");
1328 			i40e_dbg_dump_stats(pf, &pf->stats);
1329 			dev_info(&pf->pdev->dev, "pf stats_offsets:\n");
1330 			i40e_dbg_dump_stats(pf, &pf->stats_offsets);
1331 		} else if (strncmp(&cmd_buf[5], "reset stats", 11) == 0) {
1332 			dev_info(&pf->pdev->dev,
1333 				 "core reset count: %d\n", pf->corer_count);
1334 			dev_info(&pf->pdev->dev,
1335 				 "global reset count: %d\n", pf->globr_count);
1336 			dev_info(&pf->pdev->dev,
1337 				 "emp reset count: %d\n", pf->empr_count);
1338 			dev_info(&pf->pdev->dev,
1339 				 "pf reset count: %d\n", pf->pfr_count);
1340 		} else if (strncmp(&cmd_buf[5], "port", 4) == 0) {
1341 			struct i40e_aqc_query_port_ets_config_resp *bw_data;
1342 			struct i40e_dcbx_config *cfg =
1343 						&pf->hw.local_dcbx_config;
1344 			struct i40e_dcbx_config *r_cfg =
1345 						&pf->hw.remote_dcbx_config;
1346 			int i, ret;
1347 
1348 			bw_data = kzalloc(sizeof(
1349 				    struct i40e_aqc_query_port_ets_config_resp),
1350 					  GFP_KERNEL);
1351 			if (!bw_data) {
1352 				ret = -ENOMEM;
1353 				goto command_write_done;
1354 			}
1355 
1356 			ret = i40e_aq_query_port_ets_config(&pf->hw,
1357 							    pf->mac_seid,
1358 							    bw_data, NULL);
1359 			if (ret) {
1360 				dev_info(&pf->pdev->dev,
1361 					 "Query Port ETS Config AQ command failed =0x%x\n",
1362 					 pf->hw.aq.asq_last_status);
1363 				kfree(bw_data);
1364 				bw_data = NULL;
1365 				goto command_write_done;
1366 			}
1367 			dev_info(&pf->pdev->dev,
1368 				 "port bw: tc_valid=0x%x tc_strict_prio=0x%x, tc_bw_max=0x%04x,0x%04x\n",
1369 				 bw_data->tc_valid_bits,
1370 				 bw_data->tc_strict_priority_bits,
1371 				 le16_to_cpu(bw_data->tc_bw_max[0]),
1372 				 le16_to_cpu(bw_data->tc_bw_max[1]));
1373 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1374 				dev_info(&pf->pdev->dev, "port bw: tc_bw_share=%d tc_bw_limit=%d\n",
1375 					 bw_data->tc_bw_share_credits[i],
1376 					 le16_to_cpu(bw_data->tc_bw_limits[i]));
1377 			}
1378 
1379 			kfree(bw_data);
1380 			bw_data = NULL;
1381 
1382 			dev_info(&pf->pdev->dev,
1383 				 "port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1384 				 cfg->etscfg.willing, cfg->etscfg.cbs,
1385 				 cfg->etscfg.maxtcs);
1386 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1387 				dev_info(&pf->pdev->dev, "port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1388 					 i, cfg->etscfg.prioritytable[i],
1389 					 cfg->etscfg.tcbwtable[i],
1390 					 cfg->etscfg.tsatable[i]);
1391 			}
1392 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1393 				dev_info(&pf->pdev->dev, "port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1394 					 i, cfg->etsrec.prioritytable[i],
1395 					 cfg->etsrec.tcbwtable[i],
1396 					 cfg->etsrec.tsatable[i]);
1397 			}
1398 			dev_info(&pf->pdev->dev,
1399 				 "port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1400 				 cfg->pfc.willing, cfg->pfc.mbc,
1401 				 cfg->pfc.pfccap, cfg->pfc.pfcenable);
1402 			dev_info(&pf->pdev->dev,
1403 				 "port app_table: num_apps=%d\n", cfg->numapps);
1404 			for (i = 0; i < cfg->numapps; i++) {
1405 				dev_info(&pf->pdev->dev, "port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1406 					 i, cfg->app[i].priority,
1407 					 cfg->app[i].selector,
1408 					 cfg->app[i].protocolid);
1409 			}
1410 			/* Peer TLV DCBX data */
1411 			dev_info(&pf->pdev->dev,
1412 				 "remote port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1413 				 r_cfg->etscfg.willing,
1414 				 r_cfg->etscfg.cbs, r_cfg->etscfg.maxtcs);
1415 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1416 				dev_info(&pf->pdev->dev, "remote port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1417 					 i, r_cfg->etscfg.prioritytable[i],
1418 					 r_cfg->etscfg.tcbwtable[i],
1419 					 r_cfg->etscfg.tsatable[i]);
1420 			}
1421 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1422 				dev_info(&pf->pdev->dev, "remote port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1423 					 i, r_cfg->etsrec.prioritytable[i],
1424 					 r_cfg->etsrec.tcbwtable[i],
1425 					 r_cfg->etsrec.tsatable[i]);
1426 			}
1427 			dev_info(&pf->pdev->dev,
1428 				 "remote port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1429 				 r_cfg->pfc.willing,
1430 				 r_cfg->pfc.mbc,
1431 				 r_cfg->pfc.pfccap,
1432 				 r_cfg->pfc.pfcenable);
1433 			dev_info(&pf->pdev->dev,
1434 				 "remote port app_table: num_apps=%d\n",
1435 				 r_cfg->numapps);
1436 			for (i = 0; i < r_cfg->numapps; i++) {
1437 				dev_info(&pf->pdev->dev, "remote port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1438 					 i, r_cfg->app[i].priority,
1439 					 r_cfg->app[i].selector,
1440 					 r_cfg->app[i].protocolid);
1441 			}
1442 		} else {
1443 			dev_info(&pf->pdev->dev,
1444 				 "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>],\n");
1445 			dev_info(&pf->pdev->dev, "dump switch, dump vsi [seid] or\n");
1446 			dev_info(&pf->pdev->dev, "dump stats\n");
1447 			dev_info(&pf->pdev->dev, "dump reset stats\n");
1448 			dev_info(&pf->pdev->dev, "dump port\n");
1449 			dev_info(&pf->pdev->dev,
1450 				 "dump debug fwdata <cluster_id> <table_id> <index>\n");
1451 		}
1452 
1453 	} else if (strncmp(cmd_buf, "msg_enable", 10) == 0) {
1454 		u32 level;
1455 		cnt = sscanf(&cmd_buf[10], "%i", &level);
1456 		if (cnt) {
1457 			if (I40E_DEBUG_USER & level) {
1458 				pf->hw.debug_mask = level;
1459 				dev_info(&pf->pdev->dev,
1460 					 "set hw.debug_mask = 0x%08x\n",
1461 					 pf->hw.debug_mask);
1462 			}
1463 			pf->msg_enable = level;
1464 			dev_info(&pf->pdev->dev, "set msg_enable = 0x%08x\n",
1465 				 pf->msg_enable);
1466 		} else {
1467 			dev_info(&pf->pdev->dev, "msg_enable = 0x%08x\n",
1468 				 pf->msg_enable);
1469 		}
1470 	} else if (strncmp(cmd_buf, "pfr", 3) == 0) {
1471 		dev_info(&pf->pdev->dev, "debugfs: forcing PFR\n");
1472 		i40e_do_reset_safe(pf, (1 << __I40E_PF_RESET_REQUESTED));
1473 
1474 	} else if (strncmp(cmd_buf, "corer", 5) == 0) {
1475 		dev_info(&pf->pdev->dev, "debugfs: forcing CoreR\n");
1476 		i40e_do_reset_safe(pf, (1 << __I40E_CORE_RESET_REQUESTED));
1477 
1478 	} else if (strncmp(cmd_buf, "globr", 5) == 0) {
1479 		dev_info(&pf->pdev->dev, "debugfs: forcing GlobR\n");
1480 		i40e_do_reset_safe(pf, (1 << __I40E_GLOBAL_RESET_REQUESTED));
1481 
1482 	} else if (strncmp(cmd_buf, "empr", 4) == 0) {
1483 		dev_info(&pf->pdev->dev, "debugfs: forcing EMPR\n");
1484 		i40e_do_reset_safe(pf, (1 << __I40E_EMP_RESET_REQUESTED));
1485 
1486 	} else if (strncmp(cmd_buf, "read", 4) == 0) {
1487 		u32 address;
1488 		u32 value;
1489 		cnt = sscanf(&cmd_buf[4], "%i", &address);
1490 		if (cnt != 1) {
1491 			dev_info(&pf->pdev->dev, "read <reg>\n");
1492 			goto command_write_done;
1493 		}
1494 
1495 		/* check the range on address */
1496 		if (address >= I40E_MAX_REGISTER) {
1497 			dev_info(&pf->pdev->dev, "read reg address 0x%08x too large\n",
1498 				 address);
1499 			goto command_write_done;
1500 		}
1501 
1502 		value = rd32(&pf->hw, address);
1503 		dev_info(&pf->pdev->dev, "read: 0x%08x = 0x%08x\n",
1504 			 address, value);
1505 
1506 	} else if (strncmp(cmd_buf, "write", 5) == 0) {
1507 		u32 address, value;
1508 		cnt = sscanf(&cmd_buf[5], "%i %i", &address, &value);
1509 		if (cnt != 2) {
1510 			dev_info(&pf->pdev->dev, "write <reg> <value>\n");
1511 			goto command_write_done;
1512 		}
1513 
1514 		/* check the range on address */
1515 		if (address >= I40E_MAX_REGISTER) {
1516 			dev_info(&pf->pdev->dev, "write reg address 0x%08x too large\n",
1517 				 address);
1518 			goto command_write_done;
1519 		}
1520 		wr32(&pf->hw, address, value);
1521 		value = rd32(&pf->hw, address);
1522 		dev_info(&pf->pdev->dev, "write: 0x%08x = 0x%08x\n",
1523 			 address, value);
1524 	} else if (strncmp(cmd_buf, "clear_stats", 11) == 0) {
1525 		if (strncmp(&cmd_buf[12], "vsi", 3) == 0) {
1526 			cnt = sscanf(&cmd_buf[15], "%i", &vsi_seid);
1527 			if (cnt == 0) {
1528 				int i;
1529 				for (i = 0; i < pf->num_alloc_vsi; i++)
1530 					i40e_vsi_reset_stats(pf->vsi[i]);
1531 				dev_info(&pf->pdev->dev, "vsi clear stats called for all vsi's\n");
1532 			} else if (cnt == 1) {
1533 				vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1534 				if (!vsi) {
1535 					dev_info(&pf->pdev->dev,
1536 						 "clear_stats vsi: bad vsi %d\n",
1537 						 vsi_seid);
1538 					goto command_write_done;
1539 				}
1540 				i40e_vsi_reset_stats(vsi);
1541 				dev_info(&pf->pdev->dev,
1542 					 "vsi clear stats called for vsi %d\n",
1543 					 vsi_seid);
1544 			} else {
1545 				dev_info(&pf->pdev->dev, "clear_stats vsi [seid]\n");
1546 			}
1547 		} else if (strncmp(&cmd_buf[12], "pf", 2) == 0) {
1548 			i40e_pf_reset_stats(pf);
1549 			dev_info(&pf->pdev->dev, "pf clear stats called\n");
1550 		} else {
1551 			dev_info(&pf->pdev->dev, "clear_stats vsi [seid] or clear_stats pf\n");
1552 		}
1553 	} else if (strncmp(cmd_buf, "send aq_cmd", 11) == 0) {
1554 		struct i40e_aq_desc *desc;
1555 		i40e_status ret;
1556 
1557 		desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1558 		if (!desc)
1559 			goto command_write_done;
1560 		cnt = sscanf(&cmd_buf[11],
1561 			     "%hx %hx %hx %hx %x %x %x %x %x %x",
1562 			     &desc->flags,
1563 			     &desc->opcode, &desc->datalen, &desc->retval,
1564 			     &desc->cookie_high, &desc->cookie_low,
1565 			     &desc->params.internal.param0,
1566 			     &desc->params.internal.param1,
1567 			     &desc->params.internal.param2,
1568 			     &desc->params.internal.param3);
1569 		if (cnt != 10) {
1570 			dev_info(&pf->pdev->dev,
1571 				 "send aq_cmd: bad command string, cnt=%d\n",
1572 				 cnt);
1573 			kfree(desc);
1574 			desc = NULL;
1575 			goto command_write_done;
1576 		}
1577 		ret = i40e_asq_send_command(&pf->hw, desc, NULL, 0, NULL);
1578 		if (!ret) {
1579 			dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1580 		} else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1581 			dev_info(&pf->pdev->dev,
1582 				 "AQ command send failed Opcode %x AQ Error: %d\n",
1583 				 desc->opcode, pf->hw.aq.asq_last_status);
1584 		} else {
1585 			dev_info(&pf->pdev->dev,
1586 				 "AQ command send failed Opcode %x Status: %d\n",
1587 				 desc->opcode, ret);
1588 		}
1589 		dev_info(&pf->pdev->dev,
1590 			 "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1591 			 desc->flags, desc->opcode, desc->datalen, desc->retval,
1592 			 desc->cookie_high, desc->cookie_low,
1593 			 desc->params.internal.param0,
1594 			 desc->params.internal.param1,
1595 			 desc->params.internal.param2,
1596 			 desc->params.internal.param3);
1597 		kfree(desc);
1598 		desc = NULL;
1599 	} else if (strncmp(cmd_buf, "send indirect aq_cmd", 20) == 0) {
1600 		struct i40e_aq_desc *desc;
1601 		i40e_status ret;
1602 		u16 buffer_len;
1603 		u8 *buff;
1604 
1605 		desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1606 		if (!desc)
1607 			goto command_write_done;
1608 		cnt = sscanf(&cmd_buf[20],
1609 			     "%hx %hx %hx %hx %x %x %x %x %x %x %hd",
1610 			     &desc->flags,
1611 			     &desc->opcode, &desc->datalen, &desc->retval,
1612 			     &desc->cookie_high, &desc->cookie_low,
1613 			     &desc->params.internal.param0,
1614 			     &desc->params.internal.param1,
1615 			     &desc->params.internal.param2,
1616 			     &desc->params.internal.param3,
1617 			     &buffer_len);
1618 		if (cnt != 11) {
1619 			dev_info(&pf->pdev->dev,
1620 				 "send indirect aq_cmd: bad command string, cnt=%d\n",
1621 				 cnt);
1622 			kfree(desc);
1623 			desc = NULL;
1624 			goto command_write_done;
1625 		}
1626 		/* Just stub a buffer big enough in case user messed up */
1627 		if (buffer_len == 0)
1628 			buffer_len = 1280;
1629 
1630 		buff = kzalloc(buffer_len, GFP_KERNEL);
1631 		if (!buff) {
1632 			kfree(desc);
1633 			desc = NULL;
1634 			goto command_write_done;
1635 		}
1636 		desc->flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
1637 		ret = i40e_asq_send_command(&pf->hw, desc, buff,
1638 					    buffer_len, NULL);
1639 		if (!ret) {
1640 			dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1641 		} else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1642 			dev_info(&pf->pdev->dev,
1643 				 "AQ command send failed Opcode %x AQ Error: %d\n",
1644 				 desc->opcode, pf->hw.aq.asq_last_status);
1645 		} else {
1646 			dev_info(&pf->pdev->dev,
1647 				 "AQ command send failed Opcode %x Status: %d\n",
1648 				 desc->opcode, ret);
1649 		}
1650 		dev_info(&pf->pdev->dev,
1651 			 "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1652 			 desc->flags, desc->opcode, desc->datalen, desc->retval,
1653 			 desc->cookie_high, desc->cookie_low,
1654 			 desc->params.internal.param0,
1655 			 desc->params.internal.param1,
1656 			 desc->params.internal.param2,
1657 			 desc->params.internal.param3);
1658 		print_hex_dump(KERN_INFO, "AQ buffer WB: ",
1659 			       DUMP_PREFIX_OFFSET, 16, 1,
1660 			       buff, buffer_len, true);
1661 		kfree(buff);
1662 		buff = NULL;
1663 		kfree(desc);
1664 		desc = NULL;
1665 	} else if ((strncmp(cmd_buf, "add fd_filter", 13) == 0) ||
1666 		   (strncmp(cmd_buf, "rem fd_filter", 13) == 0)) {
1667 		struct i40e_fdir_filter fd_data;
1668 		u16 packet_len, i, j = 0;
1669 		char *asc_packet;
1670 		u8 *raw_packet;
1671 		bool add = false;
1672 		int ret;
1673 
1674 		if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1675 			goto command_write_done;
1676 
1677 		if (strncmp(cmd_buf, "add", 3) == 0)
1678 			add = true;
1679 
1680 		if (add && (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1681 			goto command_write_done;
1682 
1683 		asc_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE,
1684 				     GFP_KERNEL);
1685 		if (!asc_packet)
1686 			goto command_write_done;
1687 
1688 		raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE,
1689 				     GFP_KERNEL);
1690 
1691 		if (!raw_packet) {
1692 			kfree(asc_packet);
1693 			asc_packet = NULL;
1694 			goto command_write_done;
1695 		}
1696 
1697 		cnt = sscanf(&cmd_buf[13],
1698 			     "%hx %2hhx %2hhx %hx %2hhx %2hhx %hx %x %hd %511s",
1699 			     &fd_data.q_index,
1700 			     &fd_data.flex_off, &fd_data.pctype,
1701 			     &fd_data.dest_vsi, &fd_data.dest_ctl,
1702 			     &fd_data.fd_status, &fd_data.cnt_index,
1703 			     &fd_data.fd_id, &packet_len, asc_packet);
1704 		if (cnt != 10) {
1705 			dev_info(&pf->pdev->dev,
1706 				 "program fd_filter: bad command string, cnt=%d\n",
1707 				 cnt);
1708 			kfree(asc_packet);
1709 			asc_packet = NULL;
1710 			kfree(raw_packet);
1711 			goto command_write_done;
1712 		}
1713 
1714 		/* fix packet length if user entered 0 */
1715 		if (packet_len == 0)
1716 			packet_len = I40E_FDIR_MAX_RAW_PACKET_SIZE;
1717 
1718 		/* make sure to check the max as well */
1719 		packet_len = min_t(u16,
1720 				   packet_len, I40E_FDIR_MAX_RAW_PACKET_SIZE);
1721 
1722 		for (i = 0; i < packet_len; i++) {
1723 			sscanf(&asc_packet[j], "%2hhx ",
1724 			       &raw_packet[i]);
1725 			j += 3;
1726 		}
1727 		dev_info(&pf->pdev->dev, "FD raw packet dump\n");
1728 		print_hex_dump(KERN_INFO, "FD raw packet: ",
1729 			       DUMP_PREFIX_OFFSET, 16, 1,
1730 			       raw_packet, packet_len, true);
1731 		ret = i40e_program_fdir_filter(&fd_data, raw_packet, pf, add);
1732 		if (!ret) {
1733 			dev_info(&pf->pdev->dev, "Filter command send Status : Success\n");
1734 		} else {
1735 			dev_info(&pf->pdev->dev,
1736 				 "Filter command send failed %d\n", ret);
1737 		}
1738 		kfree(raw_packet);
1739 		raw_packet = NULL;
1740 		kfree(asc_packet);
1741 		asc_packet = NULL;
1742 	} else if (strncmp(cmd_buf, "fd-atr off", 10) == 0) {
1743 		i40e_dbg_cmd_fd_ctrl(pf, I40E_FLAG_FD_ATR_ENABLED, false);
1744 	} else if (strncmp(cmd_buf, "fd-atr on", 9) == 0) {
1745 		i40e_dbg_cmd_fd_ctrl(pf, I40E_FLAG_FD_ATR_ENABLED, true);
1746 	} else if (strncmp(cmd_buf, "lldp", 4) == 0) {
1747 		if (strncmp(&cmd_buf[5], "stop", 4) == 0) {
1748 			int ret;
1749 			ret = i40e_aq_stop_lldp(&pf->hw, false, NULL);
1750 			if (ret) {
1751 				dev_info(&pf->pdev->dev,
1752 					 "Stop LLDP AQ command failed =0x%x\n",
1753 					 pf->hw.aq.asq_last_status);
1754 				goto command_write_done;
1755 			}
1756 			ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1757 						pf->hw.mac.addr,
1758 						I40E_ETH_P_LLDP, 0,
1759 						pf->vsi[pf->lan_vsi]->seid,
1760 						0, true, NULL, NULL);
1761 			if (ret) {
1762 				dev_info(&pf->pdev->dev,
1763 					"%s: Add Control Packet Filter AQ command failed =0x%x\n",
1764 					__func__, pf->hw.aq.asq_last_status);
1765 				goto command_write_done;
1766 			}
1767 #ifdef CONFIG_I40E_DCB
1768 			pf->dcbx_cap = DCB_CAP_DCBX_HOST |
1769 				       DCB_CAP_DCBX_VER_IEEE;
1770 #endif /* CONFIG_I40E_DCB */
1771 		} else if (strncmp(&cmd_buf[5], "start", 5) == 0) {
1772 			int ret;
1773 			ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1774 						pf->hw.mac.addr,
1775 						I40E_ETH_P_LLDP, 0,
1776 						pf->vsi[pf->lan_vsi]->seid,
1777 						0, false, NULL, NULL);
1778 			if (ret) {
1779 				dev_info(&pf->pdev->dev,
1780 					"%s: Remove Control Packet Filter AQ command failed =0x%x\n",
1781 					__func__, pf->hw.aq.asq_last_status);
1782 				/* Continue and start FW LLDP anyways */
1783 			}
1784 
1785 			ret = i40e_aq_start_lldp(&pf->hw, NULL);
1786 			if (ret) {
1787 				dev_info(&pf->pdev->dev,
1788 					 "Start LLDP AQ command failed =0x%x\n",
1789 					 pf->hw.aq.asq_last_status);
1790 				goto command_write_done;
1791 			}
1792 #ifdef CONFIG_I40E_DCB
1793 			pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
1794 				       DCB_CAP_DCBX_VER_IEEE;
1795 #endif /* CONFIG_I40E_DCB */
1796 		} else if (strncmp(&cmd_buf[5],
1797 			   "get local", 9) == 0) {
1798 			u16 llen, rlen;
1799 			int ret;
1800 			u8 *buff;
1801 			buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1802 			if (!buff)
1803 				goto command_write_done;
1804 
1805 			ret = i40e_aq_get_lldp_mib(&pf->hw, 0,
1806 						   I40E_AQ_LLDP_MIB_LOCAL,
1807 						   buff, I40E_LLDPDU_SIZE,
1808 						   &llen, &rlen, NULL);
1809 			if (ret) {
1810 				dev_info(&pf->pdev->dev,
1811 					 "Get LLDP MIB (local) AQ command failed =0x%x\n",
1812 					 pf->hw.aq.asq_last_status);
1813 				kfree(buff);
1814 				buff = NULL;
1815 				goto command_write_done;
1816 			}
1817 			dev_info(&pf->pdev->dev, "LLDP MIB (local)\n");
1818 			print_hex_dump(KERN_INFO, "LLDP MIB (local): ",
1819 				       DUMP_PREFIX_OFFSET, 16, 1,
1820 				       buff, I40E_LLDPDU_SIZE, true);
1821 			kfree(buff);
1822 			buff = NULL;
1823 		} else if (strncmp(&cmd_buf[5], "get remote", 10) == 0) {
1824 			u16 llen, rlen;
1825 			int ret;
1826 			u8 *buff;
1827 			buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1828 			if (!buff)
1829 				goto command_write_done;
1830 
1831 			ret = i40e_aq_get_lldp_mib(&pf->hw,
1832 					I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
1833 					I40E_AQ_LLDP_MIB_LOCAL,
1834 					buff, I40E_LLDPDU_SIZE,
1835 					&llen, &rlen, NULL);
1836 			if (ret) {
1837 				dev_info(&pf->pdev->dev,
1838 					 "Get LLDP MIB (remote) AQ command failed =0x%x\n",
1839 					 pf->hw.aq.asq_last_status);
1840 				kfree(buff);
1841 				buff = NULL;
1842 				goto command_write_done;
1843 			}
1844 			dev_info(&pf->pdev->dev, "LLDP MIB (remote)\n");
1845 			print_hex_dump(KERN_INFO, "LLDP MIB (remote): ",
1846 				       DUMP_PREFIX_OFFSET, 16, 1,
1847 				       buff, I40E_LLDPDU_SIZE, true);
1848 			kfree(buff);
1849 			buff = NULL;
1850 		} else if (strncmp(&cmd_buf[5], "event on", 8) == 0) {
1851 			int ret;
1852 			ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1853 								true, NULL);
1854 			if (ret) {
1855 				dev_info(&pf->pdev->dev,
1856 					 "Config LLDP MIB Change Event (on) AQ command failed =0x%x\n",
1857 					 pf->hw.aq.asq_last_status);
1858 				goto command_write_done;
1859 			}
1860 		} else if (strncmp(&cmd_buf[5], "event off", 9) == 0) {
1861 			int ret;
1862 			ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1863 								false, NULL);
1864 			if (ret) {
1865 				dev_info(&pf->pdev->dev,
1866 					 "Config LLDP MIB Change Event (off) AQ command failed =0x%x\n",
1867 					 pf->hw.aq.asq_last_status);
1868 				goto command_write_done;
1869 			}
1870 		}
1871 	} else if (strncmp(cmd_buf, "nvm read", 8) == 0) {
1872 		u16 buffer_len, bytes;
1873 		u16 module;
1874 		u32 offset;
1875 		u16 *buff;
1876 		int ret;
1877 
1878 		cnt = sscanf(&cmd_buf[8], "%hx %x %hx",
1879 			     &module, &offset, &buffer_len);
1880 		if (cnt == 0) {
1881 			module = 0;
1882 			offset = 0;
1883 			buffer_len = 0;
1884 		} else if (cnt == 1) {
1885 			offset = 0;
1886 			buffer_len = 0;
1887 		} else if (cnt == 2) {
1888 			buffer_len = 0;
1889 		} else if (cnt > 3) {
1890 			dev_info(&pf->pdev->dev,
1891 				 "nvm read: bad command string, cnt=%d\n", cnt);
1892 			goto command_write_done;
1893 		}
1894 
1895 		/* set the max length */
1896 		buffer_len = min_t(u16, buffer_len, I40E_MAX_AQ_BUF_SIZE/2);
1897 
1898 		bytes = 2 * buffer_len;
1899 
1900 		/* read at least 1k bytes, no more than 4kB */
1901 		bytes = clamp(bytes, (u16)1024, (u16)I40E_MAX_AQ_BUF_SIZE);
1902 		buff = kzalloc(bytes, GFP_KERNEL);
1903 		if (!buff)
1904 			goto command_write_done;
1905 
1906 		ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
1907 		if (ret) {
1908 			dev_info(&pf->pdev->dev,
1909 				 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1910 				 ret, pf->hw.aq.asq_last_status);
1911 			kfree(buff);
1912 			goto command_write_done;
1913 		}
1914 
1915 		ret = i40e_aq_read_nvm(&pf->hw, module, (2 * offset),
1916 				       bytes, (u8 *)buff, true, NULL);
1917 		i40e_release_nvm(&pf->hw);
1918 		if (ret) {
1919 			dev_info(&pf->pdev->dev,
1920 				 "Read NVM AQ failed err=%d status=0x%x\n",
1921 				 ret, pf->hw.aq.asq_last_status);
1922 		} else {
1923 			dev_info(&pf->pdev->dev,
1924 				 "Read NVM module=0x%x offset=0x%x words=%d\n",
1925 				 module, offset, buffer_len);
1926 			if (bytes)
1927 				print_hex_dump(KERN_INFO, "NVM Dump: ",
1928 					DUMP_PREFIX_OFFSET, 16, 2,
1929 					buff, bytes, true);
1930 		}
1931 		kfree(buff);
1932 		buff = NULL;
1933 	} else {
1934 		dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf);
1935 		dev_info(&pf->pdev->dev, "available commands\n");
1936 		dev_info(&pf->pdev->dev, "  add vsi [relay_seid]\n");
1937 		dev_info(&pf->pdev->dev, "  del vsi [vsi_seid]\n");
1938 		dev_info(&pf->pdev->dev, "  add relay <uplink_seid> <vsi_seid>\n");
1939 		dev_info(&pf->pdev->dev, "  del relay <relay_seid>\n");
1940 		dev_info(&pf->pdev->dev, "  add macaddr <vsi_seid> <aa:bb:cc:dd:ee:ff> [vlan]\n");
1941 		dev_info(&pf->pdev->dev, "  del macaddr <vsi_seid> <aa:bb:cc:dd:ee:ff> [vlan]\n");
1942 		dev_info(&pf->pdev->dev, "  add pvid <vsi_seid> <vid>\n");
1943 		dev_info(&pf->pdev->dev, "  del pvid <vsi_seid>\n");
1944 		dev_info(&pf->pdev->dev, "  dump switch\n");
1945 		dev_info(&pf->pdev->dev, "  dump vsi [seid]\n");
1946 		dev_info(&pf->pdev->dev, "  dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
1947 		dev_info(&pf->pdev->dev, "  dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
1948 		dev_info(&pf->pdev->dev, "  dump desc aq\n");
1949 		dev_info(&pf->pdev->dev, "  dump stats\n");
1950 		dev_info(&pf->pdev->dev, "  dump reset stats\n");
1951 		dev_info(&pf->pdev->dev, "  msg_enable [level]\n");
1952 		dev_info(&pf->pdev->dev, "  read <reg>\n");
1953 		dev_info(&pf->pdev->dev, "  write <reg> <value>\n");
1954 		dev_info(&pf->pdev->dev, "  clear_stats vsi [seid]\n");
1955 		dev_info(&pf->pdev->dev, "  clear_stats pf\n");
1956 		dev_info(&pf->pdev->dev, "  pfr\n");
1957 		dev_info(&pf->pdev->dev, "  corer\n");
1958 		dev_info(&pf->pdev->dev, "  globr\n");
1959 		dev_info(&pf->pdev->dev, "  send aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3>\n");
1960 		dev_info(&pf->pdev->dev, "  send indirect aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3> <buffer_len>\n");
1961 		dev_info(&pf->pdev->dev, "  add fd_filter <dest q_index> <flex_off> <pctype> <dest_vsi> <dest_ctl> <fd_status> <cnt_index> <fd_id> <packet_len> <packet>\n");
1962 		dev_info(&pf->pdev->dev, "  rem fd_filter <dest q_index> <flex_off> <pctype> <dest_vsi> <dest_ctl> <fd_status> <cnt_index> <fd_id> <packet_len> <packet>\n");
1963 		dev_info(&pf->pdev->dev, "  fd-atr off\n");
1964 		dev_info(&pf->pdev->dev, "  fd-atr on\n");
1965 		dev_info(&pf->pdev->dev, "  lldp start\n");
1966 		dev_info(&pf->pdev->dev, "  lldp stop\n");
1967 		dev_info(&pf->pdev->dev, "  lldp get local\n");
1968 		dev_info(&pf->pdev->dev, "  lldp get remote\n");
1969 		dev_info(&pf->pdev->dev, "  lldp event on\n");
1970 		dev_info(&pf->pdev->dev, "  lldp event off\n");
1971 		dev_info(&pf->pdev->dev, "  nvm read [module] [word_offset] [word_count]\n");
1972 	}
1973 
1974 command_write_done:
1975 	kfree(cmd_buf);
1976 	cmd_buf = NULL;
1977 	return count;
1978 }
1979 
1980 static const struct file_operations i40e_dbg_command_fops = {
1981 	.owner = THIS_MODULE,
1982 	.open =  simple_open,
1983 	.read =  i40e_dbg_command_read,
1984 	.write = i40e_dbg_command_write,
1985 };
1986 
1987 /**************************************************************
1988  * netdev_ops
1989  * The netdev_ops entry in debugfs is for giving the driver commands
1990  * to be executed from the netdev operations.
1991  **************************************************************/
1992 static char i40e_dbg_netdev_ops_buf[256] = "hello world";
1993 
1994 /**
1995  * i40e_dbg_netdev_ops - read for netdev_ops datum
1996  * @filp: the opened file
1997  * @buffer: where to write the data for the user to read
1998  * @count: the size of the user's buffer
1999  * @ppos: file position offset
2000  **/
2001 static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer,
2002 					size_t count, loff_t *ppos)
2003 {
2004 	struct i40e_pf *pf = filp->private_data;
2005 	int bytes_not_copied;
2006 	int buf_size = 256;
2007 	char *buf;
2008 	int len;
2009 
2010 	/* don't allow partal reads */
2011 	if (*ppos != 0)
2012 		return 0;
2013 	if (count < buf_size)
2014 		return -ENOSPC;
2015 
2016 	buf = kzalloc(buf_size, GFP_KERNEL);
2017 	if (!buf)
2018 		return -ENOSPC;
2019 
2020 	len = snprintf(buf, buf_size, "%s: %s\n",
2021 		       pf->vsi[pf->lan_vsi]->netdev->name,
2022 		       i40e_dbg_netdev_ops_buf);
2023 
2024 	bytes_not_copied = copy_to_user(buffer, buf, len);
2025 	kfree(buf);
2026 
2027 	if (bytes_not_copied < 0)
2028 		return bytes_not_copied;
2029 
2030 	*ppos = len;
2031 	return len;
2032 }
2033 
2034 /**
2035  * i40e_dbg_netdev_ops_write - write into netdev_ops datum
2036  * @filp: the opened file
2037  * @buffer: where to find the user's data
2038  * @count: the length of the user's data
2039  * @ppos: file position offset
2040  **/
2041 static ssize_t i40e_dbg_netdev_ops_write(struct file *filp,
2042 					 const char __user *buffer,
2043 					 size_t count, loff_t *ppos)
2044 {
2045 	struct i40e_pf *pf = filp->private_data;
2046 	int bytes_not_copied;
2047 	struct i40e_vsi *vsi;
2048 	char *buf_tmp;
2049 	int vsi_seid;
2050 	int i, cnt;
2051 
2052 	/* don't allow partial writes */
2053 	if (*ppos != 0)
2054 		return 0;
2055 	if (count >= sizeof(i40e_dbg_netdev_ops_buf))
2056 		return -ENOSPC;
2057 
2058 	memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf));
2059 	bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf,
2060 					  buffer, count);
2061 	if (bytes_not_copied < 0)
2062 		return bytes_not_copied;
2063 	else if (bytes_not_copied > 0)
2064 		count -= bytes_not_copied;
2065 	i40e_dbg_netdev_ops_buf[count] = '\0';
2066 
2067 	buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n');
2068 	if (buf_tmp) {
2069 		*buf_tmp = '\0';
2070 		count = buf_tmp - i40e_dbg_netdev_ops_buf + 1;
2071 	}
2072 
2073 	if (strncmp(i40e_dbg_netdev_ops_buf, "tx_timeout", 10) == 0) {
2074 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
2075 		if (cnt != 1) {
2076 			dev_info(&pf->pdev->dev, "tx_timeout <vsi_seid>\n");
2077 			goto netdev_ops_write_done;
2078 		}
2079 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2080 		if (!vsi) {
2081 			dev_info(&pf->pdev->dev,
2082 				 "tx_timeout: VSI %d not found\n", vsi_seid);
2083 		} else if (!vsi->netdev) {
2084 			dev_info(&pf->pdev->dev, "tx_timeout: no netdev for VSI %d\n",
2085 				 vsi_seid);
2086 		} else if (test_bit(__I40E_DOWN, &vsi->state)) {
2087 			dev_info(&pf->pdev->dev, "tx_timeout: VSI %d not UP\n",
2088 				 vsi_seid);
2089 		} else if (rtnl_trylock()) {
2090 			vsi->netdev->netdev_ops->ndo_tx_timeout(vsi->netdev);
2091 			rtnl_unlock();
2092 			dev_info(&pf->pdev->dev, "tx_timeout called\n");
2093 		} else {
2094 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2095 		}
2096 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) {
2097 		int mtu;
2098 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i",
2099 			     &vsi_seid, &mtu);
2100 		if (cnt != 2) {
2101 			dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n");
2102 			goto netdev_ops_write_done;
2103 		}
2104 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2105 		if (!vsi) {
2106 			dev_info(&pf->pdev->dev,
2107 				 "change_mtu: VSI %d not found\n", vsi_seid);
2108 		} else if (!vsi->netdev) {
2109 			dev_info(&pf->pdev->dev, "change_mtu: no netdev for VSI %d\n",
2110 				 vsi_seid);
2111 		} else if (rtnl_trylock()) {
2112 			vsi->netdev->netdev_ops->ndo_change_mtu(vsi->netdev,
2113 								mtu);
2114 			rtnl_unlock();
2115 			dev_info(&pf->pdev->dev, "change_mtu called\n");
2116 		} else {
2117 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2118 		}
2119 
2120 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) {
2121 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
2122 		if (cnt != 1) {
2123 			dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n");
2124 			goto netdev_ops_write_done;
2125 		}
2126 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2127 		if (!vsi) {
2128 			dev_info(&pf->pdev->dev,
2129 				 "set_rx_mode: VSI %d not found\n", vsi_seid);
2130 		} else if (!vsi->netdev) {
2131 			dev_info(&pf->pdev->dev, "set_rx_mode: no netdev for VSI %d\n",
2132 				 vsi_seid);
2133 		} else if (rtnl_trylock()) {
2134 			vsi->netdev->netdev_ops->ndo_set_rx_mode(vsi->netdev);
2135 			rtnl_unlock();
2136 			dev_info(&pf->pdev->dev, "set_rx_mode called\n");
2137 		} else {
2138 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2139 		}
2140 
2141 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) {
2142 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid);
2143 		if (cnt != 1) {
2144 			dev_info(&pf->pdev->dev, "napi <vsi_seid>\n");
2145 			goto netdev_ops_write_done;
2146 		}
2147 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2148 		if (!vsi) {
2149 			dev_info(&pf->pdev->dev, "napi: VSI %d not found\n",
2150 				 vsi_seid);
2151 		} else if (!vsi->netdev) {
2152 			dev_info(&pf->pdev->dev, "napi: no netdev for VSI %d\n",
2153 				 vsi_seid);
2154 		} else {
2155 			for (i = 0; i < vsi->num_q_vectors; i++)
2156 				napi_schedule(&vsi->q_vectors[i]->napi);
2157 			dev_info(&pf->pdev->dev, "napi called\n");
2158 		}
2159 	} else {
2160 		dev_info(&pf->pdev->dev, "unknown command '%s'\n",
2161 			 i40e_dbg_netdev_ops_buf);
2162 		dev_info(&pf->pdev->dev, "available commands\n");
2163 		dev_info(&pf->pdev->dev, "  tx_timeout <vsi_seid>\n");
2164 		dev_info(&pf->pdev->dev, "  change_mtu <vsi_seid> <mtu>\n");
2165 		dev_info(&pf->pdev->dev, "  set_rx_mode <vsi_seid>\n");
2166 		dev_info(&pf->pdev->dev, "  napi <vsi_seid>\n");
2167 	}
2168 netdev_ops_write_done:
2169 	return count;
2170 }
2171 
2172 static const struct file_operations i40e_dbg_netdev_ops_fops = {
2173 	.owner = THIS_MODULE,
2174 	.open = simple_open,
2175 	.read = i40e_dbg_netdev_ops_read,
2176 	.write = i40e_dbg_netdev_ops_write,
2177 };
2178 
2179 /**
2180  * i40e_dbg_pf_init - setup the debugfs directory for the pf
2181  * @pf: the pf that is starting up
2182  **/
2183 void i40e_dbg_pf_init(struct i40e_pf *pf)
2184 {
2185 	struct dentry *pfile;
2186 	const char *name = pci_name(pf->pdev);
2187 	const struct device *dev = &pf->pdev->dev;
2188 
2189 	pf->i40e_dbg_pf = debugfs_create_dir(name, i40e_dbg_root);
2190 	if (!pf->i40e_dbg_pf)
2191 		return;
2192 
2193 	pfile = debugfs_create_file("command", 0600, pf->i40e_dbg_pf, pf,
2194 				    &i40e_dbg_command_fops);
2195 	if (!pfile)
2196 		goto create_failed;
2197 
2198 	pfile = debugfs_create_file("dump", 0600, pf->i40e_dbg_pf, pf,
2199 				    &i40e_dbg_dump_fops);
2200 	if (!pfile)
2201 		goto create_failed;
2202 
2203 	pfile = debugfs_create_file("netdev_ops", 0600, pf->i40e_dbg_pf, pf,
2204 				    &i40e_dbg_netdev_ops_fops);
2205 	if (!pfile)
2206 		goto create_failed;
2207 
2208 	return;
2209 
2210 create_failed:
2211 	dev_info(dev, "debugfs dir/file for %s failed\n", name);
2212 	debugfs_remove_recursive(pf->i40e_dbg_pf);
2213 	return;
2214 }
2215 
2216 /**
2217  * i40e_dbg_pf_exit - clear out the pf's debugfs entries
2218  * @pf: the pf that is stopping
2219  **/
2220 void i40e_dbg_pf_exit(struct i40e_pf *pf)
2221 {
2222 	debugfs_remove_recursive(pf->i40e_dbg_pf);
2223 	pf->i40e_dbg_pf = NULL;
2224 
2225 	kfree(i40e_dbg_dump_buf);
2226 	i40e_dbg_dump_buf = NULL;
2227 }
2228 
2229 /**
2230  * i40e_dbg_init - start up debugfs for the driver
2231  **/
2232 void i40e_dbg_init(void)
2233 {
2234 	i40e_dbg_root = debugfs_create_dir(i40e_driver_name, NULL);
2235 	if (!i40e_dbg_root)
2236 		pr_info("init of debugfs failed\n");
2237 }
2238 
2239 /**
2240  * i40e_dbg_exit - clean out the driver's debugfs entries
2241  **/
2242 void i40e_dbg_exit(void)
2243 {
2244 	debugfs_remove_recursive(i40e_dbg_root);
2245 	i40e_dbg_root = NULL;
2246 }
2247 
2248 #endif /* CONFIG_DEBUG_FS */
2249