1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3 
4 #ifdef CONFIG_DEBUG_FS
5 
6 #include <linux/fs.h>
7 #include <linux/debugfs.h>
8 
9 #include "i40e.h"
10 
11 static struct dentry *i40e_dbg_root;
12 
13 /**
14  * i40e_dbg_find_vsi - searches for the vsi with the given seid
15  * @pf: the PF structure to search for the vsi
16  * @seid: seid of the vsi it is searching for
17  **/
18 static struct i40e_vsi *i40e_dbg_find_vsi(struct i40e_pf *pf, int seid)
19 {
20 	int i;
21 
22 	if (seid < 0)
23 		dev_info(&pf->pdev->dev, "%d: bad seid\n", seid);
24 	else
25 		for (i = 0; i < pf->num_alloc_vsi; i++)
26 			if (pf->vsi[i] && (pf->vsi[i]->seid == seid))
27 				return pf->vsi[i];
28 
29 	return NULL;
30 }
31 
32 /**
33  * i40e_dbg_find_veb - searches for the veb with the given seid
34  * @pf: the PF structure to search for the veb
35  * @seid: seid of the veb it is searching for
36  **/
37 static struct i40e_veb *i40e_dbg_find_veb(struct i40e_pf *pf, int seid)
38 {
39 	int i;
40 
41 	for (i = 0; i < I40E_MAX_VEB; i++)
42 		if (pf->veb[i] && pf->veb[i]->seid == seid)
43 			return pf->veb[i];
44 	return NULL;
45 }
46 
47 /**************************************************************
48  * command
49  * The command entry in debugfs is for giving the driver commands
50  * to be executed - these may be for changing the internal switch
51  * setup, adding or removing filters, or other things.  Many of
52  * these will be useful for some forms of unit testing.
53  **************************************************************/
54 static char i40e_dbg_command_buf[256] = "";
55 
56 /**
57  * i40e_dbg_command_read - read for command datum
58  * @filp: the opened file
59  * @buffer: where to write the data for the user to read
60  * @count: the size of the user's buffer
61  * @ppos: file position offset
62  **/
63 static ssize_t i40e_dbg_command_read(struct file *filp, char __user *buffer,
64 				     size_t count, loff_t *ppos)
65 {
66 	struct i40e_pf *pf = filp->private_data;
67 	int bytes_not_copied;
68 	int buf_size = 256;
69 	char *buf;
70 	int len;
71 
72 	/* don't allow partial reads */
73 	if (*ppos != 0)
74 		return 0;
75 	if (count < buf_size)
76 		return -ENOSPC;
77 
78 	buf = kzalloc(buf_size, GFP_KERNEL);
79 	if (!buf)
80 		return -ENOSPC;
81 
82 	len = snprintf(buf, buf_size, "%s: %s\n",
83 		       pf->vsi[pf->lan_vsi]->netdev->name,
84 		       i40e_dbg_command_buf);
85 
86 	bytes_not_copied = copy_to_user(buffer, buf, len);
87 	kfree(buf);
88 
89 	if (bytes_not_copied)
90 		return -EFAULT;
91 
92 	*ppos = len;
93 	return len;
94 }
95 
96 static char *i40e_filter_state_string[] = {
97 	"INVALID",
98 	"NEW",
99 	"ACTIVE",
100 	"FAILED",
101 	"REMOVE",
102 };
103 
104 /**
105  * i40e_dbg_dump_vsi_seid - handles dump vsi seid write into command datum
106  * @pf: the i40e_pf created in command write
107  * @seid: the seid the user put in
108  **/
109 static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
110 {
111 	struct rtnl_link_stats64 *nstat;
112 	struct i40e_mac_filter *f;
113 	struct i40e_vsi *vsi;
114 	int i, bkt;
115 
116 	vsi = i40e_dbg_find_vsi(pf, seid);
117 	if (!vsi) {
118 		dev_info(&pf->pdev->dev,
119 			 "dump %d: seid not found\n", seid);
120 		return;
121 	}
122 	dev_info(&pf->pdev->dev, "vsi seid %d\n", seid);
123 	if (vsi->netdev) {
124 		struct net_device *nd = vsi->netdev;
125 
126 		dev_info(&pf->pdev->dev, "    netdev: name = %s, state = %lu, flags = 0x%08x\n",
127 			 nd->name, nd->state, nd->flags);
128 		dev_info(&pf->pdev->dev, "        features      = 0x%08lx\n",
129 			 (unsigned long int)nd->features);
130 		dev_info(&pf->pdev->dev, "        hw_features   = 0x%08lx\n",
131 			 (unsigned long int)nd->hw_features);
132 		dev_info(&pf->pdev->dev, "        vlan_features = 0x%08lx\n",
133 			 (unsigned long int)nd->vlan_features);
134 	}
135 	dev_info(&pf->pdev->dev, "    active_vlans is %s\n",
136 		 vsi->active_vlans ? "<valid>" : "<null>");
137 	dev_info(&pf->pdev->dev,
138 		 "    flags = 0x%08lx, netdev_registered = %i, current_netdev_flags = 0x%04x\n",
139 		 vsi->flags, vsi->netdev_registered, vsi->current_netdev_flags);
140 	for (i = 0; i < BITS_TO_LONGS(__I40E_VSI_STATE_SIZE__); i++)
141 		dev_info(&pf->pdev->dev,
142 			 "    state[%d] = %08lx\n",
143 			 i, vsi->state[i]);
144 	if (vsi == pf->vsi[pf->lan_vsi])
145 		dev_info(&pf->pdev->dev, "    MAC address: %pM SAN MAC: %pM Port MAC: %pM\n",
146 			 pf->hw.mac.addr,
147 			 pf->hw.mac.san_addr,
148 			 pf->hw.mac.port_addr);
149 	hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
150 		dev_info(&pf->pdev->dev,
151 			 "    mac_filter_hash: %pM vid=%d, state %s\n",
152 			 f->macaddr, f->vlan,
153 			 i40e_filter_state_string[f->state]);
154 	}
155 	dev_info(&pf->pdev->dev, "    active_filters %u, promisc_threshold %u, overflow promisc %s\n",
156 		 vsi->active_filters, vsi->promisc_threshold,
157 		 (test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state) ?
158 		  "ON" : "OFF"));
159 	nstat = i40e_get_vsi_stats_struct(vsi);
160 	dev_info(&pf->pdev->dev,
161 		 "    net_stats: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n",
162 		 (unsigned long int)nstat->rx_packets,
163 		 (unsigned long int)nstat->rx_bytes,
164 		 (unsigned long int)nstat->rx_errors,
165 		 (unsigned long int)nstat->rx_dropped);
166 	dev_info(&pf->pdev->dev,
167 		 "    net_stats: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n",
168 		 (unsigned long int)nstat->tx_packets,
169 		 (unsigned long int)nstat->tx_bytes,
170 		 (unsigned long int)nstat->tx_errors,
171 		 (unsigned long int)nstat->tx_dropped);
172 	dev_info(&pf->pdev->dev,
173 		 "    net_stats: multicast = %lu, collisions = %lu\n",
174 		 (unsigned long int)nstat->multicast,
175 		 (unsigned long int)nstat->collisions);
176 	dev_info(&pf->pdev->dev,
177 		 "    net_stats: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n",
178 		 (unsigned long int)nstat->rx_length_errors,
179 		 (unsigned long int)nstat->rx_over_errors,
180 		 (unsigned long int)nstat->rx_crc_errors);
181 	dev_info(&pf->pdev->dev,
182 		 "    net_stats: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n",
183 		 (unsigned long int)nstat->rx_frame_errors,
184 		 (unsigned long int)nstat->rx_fifo_errors,
185 		 (unsigned long int)nstat->rx_missed_errors);
186 	dev_info(&pf->pdev->dev,
187 		 "    net_stats: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n",
188 		 (unsigned long int)nstat->tx_aborted_errors,
189 		 (unsigned long int)nstat->tx_carrier_errors,
190 		 (unsigned long int)nstat->tx_fifo_errors);
191 	dev_info(&pf->pdev->dev,
192 		 "    net_stats: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n",
193 		 (unsigned long int)nstat->tx_heartbeat_errors,
194 		 (unsigned long int)nstat->tx_window_errors);
195 	dev_info(&pf->pdev->dev,
196 		 "    net_stats: rx_compressed = %lu, tx_compressed = %lu\n",
197 		 (unsigned long int)nstat->rx_compressed,
198 		 (unsigned long int)nstat->tx_compressed);
199 	dev_info(&pf->pdev->dev,
200 		 "    net_stats_offsets: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n",
201 		 (unsigned long int)vsi->net_stats_offsets.rx_packets,
202 		 (unsigned long int)vsi->net_stats_offsets.rx_bytes,
203 		 (unsigned long int)vsi->net_stats_offsets.rx_errors,
204 		 (unsigned long int)vsi->net_stats_offsets.rx_dropped);
205 	dev_info(&pf->pdev->dev,
206 		 "    net_stats_offsets: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n",
207 		 (unsigned long int)vsi->net_stats_offsets.tx_packets,
208 		 (unsigned long int)vsi->net_stats_offsets.tx_bytes,
209 		 (unsigned long int)vsi->net_stats_offsets.tx_errors,
210 		 (unsigned long int)vsi->net_stats_offsets.tx_dropped);
211 	dev_info(&pf->pdev->dev,
212 		 "    net_stats_offsets: multicast = %lu, collisions = %lu\n",
213 		 (unsigned long int)vsi->net_stats_offsets.multicast,
214 		 (unsigned long int)vsi->net_stats_offsets.collisions);
215 	dev_info(&pf->pdev->dev,
216 		 "    net_stats_offsets: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n",
217 		 (unsigned long int)vsi->net_stats_offsets.rx_length_errors,
218 		 (unsigned long int)vsi->net_stats_offsets.rx_over_errors,
219 		 (unsigned long int)vsi->net_stats_offsets.rx_crc_errors);
220 	dev_info(&pf->pdev->dev,
221 		 "    net_stats_offsets: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n",
222 		 (unsigned long int)vsi->net_stats_offsets.rx_frame_errors,
223 		 (unsigned long int)vsi->net_stats_offsets.rx_fifo_errors,
224 		 (unsigned long int)vsi->net_stats_offsets.rx_missed_errors);
225 	dev_info(&pf->pdev->dev,
226 		 "    net_stats_offsets: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n",
227 		 (unsigned long int)vsi->net_stats_offsets.tx_aborted_errors,
228 		 (unsigned long int)vsi->net_stats_offsets.tx_carrier_errors,
229 		 (unsigned long int)vsi->net_stats_offsets.tx_fifo_errors);
230 	dev_info(&pf->pdev->dev,
231 		 "    net_stats_offsets: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n",
232 		 (unsigned long int)vsi->net_stats_offsets.tx_heartbeat_errors,
233 		 (unsigned long int)vsi->net_stats_offsets.tx_window_errors);
234 	dev_info(&pf->pdev->dev,
235 		 "    net_stats_offsets: rx_compressed = %lu, tx_compressed = %lu\n",
236 		 (unsigned long int)vsi->net_stats_offsets.rx_compressed,
237 		 (unsigned long int)vsi->net_stats_offsets.tx_compressed);
238 	dev_info(&pf->pdev->dev,
239 		 "    tx_restart = %d, tx_busy = %d, rx_buf_failed = %d, rx_page_failed = %d\n",
240 		 vsi->tx_restart, vsi->tx_busy,
241 		 vsi->rx_buf_failed, vsi->rx_page_failed);
242 	rcu_read_lock();
243 	for (i = 0; i < vsi->num_queue_pairs; i++) {
244 		struct i40e_ring *rx_ring = READ_ONCE(vsi->rx_rings[i]);
245 
246 		if (!rx_ring)
247 			continue;
248 
249 		dev_info(&pf->pdev->dev,
250 			 "    rx_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n",
251 			 i, *rx_ring->state,
252 			 rx_ring->queue_index,
253 			 rx_ring->reg_idx);
254 		dev_info(&pf->pdev->dev,
255 			 "    rx_rings[%i]: rx_buf_len = %d\n",
256 			 i, rx_ring->rx_buf_len);
257 		dev_info(&pf->pdev->dev,
258 			 "    rx_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n",
259 			 i,
260 			 rx_ring->next_to_use,
261 			 rx_ring->next_to_clean,
262 			 rx_ring->ring_active);
263 		dev_info(&pf->pdev->dev,
264 			 "    rx_rings[%i]: rx_stats: packets = %lld, bytes = %lld, non_eop_descs = %lld\n",
265 			 i, rx_ring->stats.packets,
266 			 rx_ring->stats.bytes,
267 			 rx_ring->rx_stats.non_eop_descs);
268 		dev_info(&pf->pdev->dev,
269 			 "    rx_rings[%i]: rx_stats: alloc_page_failed = %lld, alloc_buff_failed = %lld\n",
270 			 i,
271 			 rx_ring->rx_stats.alloc_page_failed,
272 			 rx_ring->rx_stats.alloc_buff_failed);
273 		dev_info(&pf->pdev->dev,
274 			 "    rx_rings[%i]: rx_stats: realloc_count = %lld, page_reuse_count = %lld\n",
275 			 i,
276 			 rx_ring->rx_stats.realloc_count,
277 			 rx_ring->rx_stats.page_reuse_count);
278 		dev_info(&pf->pdev->dev,
279 			 "    rx_rings[%i]: size = %i\n",
280 			 i, rx_ring->size);
281 		dev_info(&pf->pdev->dev,
282 			 "    rx_rings[%i]: itr_setting = %d (%s)\n",
283 			 i, rx_ring->itr_setting,
284 			 ITR_IS_DYNAMIC(rx_ring->itr_setting) ? "dynamic" : "fixed");
285 	}
286 	for (i = 0; i < vsi->num_queue_pairs; i++) {
287 		struct i40e_ring *tx_ring = READ_ONCE(vsi->tx_rings[i]);
288 
289 		if (!tx_ring)
290 			continue;
291 
292 		dev_info(&pf->pdev->dev,
293 			 "    tx_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n",
294 			 i, *tx_ring->state,
295 			 tx_ring->queue_index,
296 			 tx_ring->reg_idx);
297 		dev_info(&pf->pdev->dev,
298 			 "    tx_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n",
299 			 i,
300 			 tx_ring->next_to_use,
301 			 tx_ring->next_to_clean,
302 			 tx_ring->ring_active);
303 		dev_info(&pf->pdev->dev,
304 			 "    tx_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n",
305 			 i, tx_ring->stats.packets,
306 			 tx_ring->stats.bytes,
307 			 tx_ring->tx_stats.restart_queue);
308 		dev_info(&pf->pdev->dev,
309 			 "    tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n",
310 			 i,
311 			 tx_ring->tx_stats.tx_busy,
312 			 tx_ring->tx_stats.tx_done_old);
313 		dev_info(&pf->pdev->dev,
314 			 "    tx_rings[%i]: size = %i\n",
315 			 i, tx_ring->size);
316 		dev_info(&pf->pdev->dev,
317 			 "    tx_rings[%i]: DCB tc = %d\n",
318 			 i, tx_ring->dcb_tc);
319 		dev_info(&pf->pdev->dev,
320 			 "    tx_rings[%i]: itr_setting = %d (%s)\n",
321 			 i, tx_ring->itr_setting,
322 			 ITR_IS_DYNAMIC(tx_ring->itr_setting) ? "dynamic" : "fixed");
323 	}
324 	rcu_read_unlock();
325 	dev_info(&pf->pdev->dev,
326 		 "    work_limit = %d\n",
327 		 vsi->work_limit);
328 	dev_info(&pf->pdev->dev,
329 		 "    max_frame = %d, rx_buf_len = %d dtype = %d\n",
330 		 vsi->max_frame, vsi->rx_buf_len, 0);
331 	dev_info(&pf->pdev->dev,
332 		 "    num_q_vectors = %i, base_vector = %i\n",
333 		 vsi->num_q_vectors, vsi->base_vector);
334 	dev_info(&pf->pdev->dev,
335 		 "    seid = %d, id = %d, uplink_seid = %d\n",
336 		 vsi->seid, vsi->id, vsi->uplink_seid);
337 	dev_info(&pf->pdev->dev,
338 		 "    base_queue = %d, num_queue_pairs = %d, num_desc = %d\n",
339 		 vsi->base_queue, vsi->num_queue_pairs, vsi->num_desc);
340 	dev_info(&pf->pdev->dev, "    type = %i\n", vsi->type);
341 	if (vsi->type == I40E_VSI_SRIOV)
342 		dev_info(&pf->pdev->dev, "    VF ID = %i\n", vsi->vf_id);
343 	dev_info(&pf->pdev->dev,
344 		 "    info: valid_sections = 0x%04x, switch_id = 0x%04x\n",
345 		 vsi->info.valid_sections, vsi->info.switch_id);
346 	dev_info(&pf->pdev->dev,
347 		 "    info: sw_reserved[] = 0x%02x 0x%02x\n",
348 		 vsi->info.sw_reserved[0], vsi->info.sw_reserved[1]);
349 	dev_info(&pf->pdev->dev,
350 		 "    info: sec_flags = 0x%02x, sec_reserved = 0x%02x\n",
351 		 vsi->info.sec_flags, vsi->info.sec_reserved);
352 	dev_info(&pf->pdev->dev,
353 		 "    info: pvid = 0x%04x, fcoe_pvid = 0x%04x, port_vlan_flags = 0x%02x\n",
354 		 vsi->info.pvid, vsi->info.fcoe_pvid,
355 		 vsi->info.port_vlan_flags);
356 	dev_info(&pf->pdev->dev,
357 		 "    info: pvlan_reserved[] = 0x%02x 0x%02x 0x%02x\n",
358 		 vsi->info.pvlan_reserved[0], vsi->info.pvlan_reserved[1],
359 		 vsi->info.pvlan_reserved[2]);
360 	dev_info(&pf->pdev->dev,
361 		 "    info: ingress_table = 0x%08x, egress_table = 0x%08x\n",
362 		 vsi->info.ingress_table, vsi->info.egress_table);
363 	dev_info(&pf->pdev->dev,
364 		 "    info: cas_pv_stag = 0x%04x, cas_pv_flags= 0x%02x, cas_pv_reserved = 0x%02x\n",
365 		 vsi->info.cas_pv_tag, vsi->info.cas_pv_flags,
366 		 vsi->info.cas_pv_reserved);
367 	dev_info(&pf->pdev->dev,
368 		 "    info: queue_mapping[0..7 ] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
369 		 vsi->info.queue_mapping[0], vsi->info.queue_mapping[1],
370 		 vsi->info.queue_mapping[2], vsi->info.queue_mapping[3],
371 		 vsi->info.queue_mapping[4], vsi->info.queue_mapping[5],
372 		 vsi->info.queue_mapping[6], vsi->info.queue_mapping[7]);
373 	dev_info(&pf->pdev->dev,
374 		 "    info: queue_mapping[8..15] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
375 		 vsi->info.queue_mapping[8], vsi->info.queue_mapping[9],
376 		 vsi->info.queue_mapping[10], vsi->info.queue_mapping[11],
377 		 vsi->info.queue_mapping[12], vsi->info.queue_mapping[13],
378 		 vsi->info.queue_mapping[14], vsi->info.queue_mapping[15]);
379 	dev_info(&pf->pdev->dev,
380 		 "    info: tc_mapping[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
381 		 vsi->info.tc_mapping[0], vsi->info.tc_mapping[1],
382 		 vsi->info.tc_mapping[2], vsi->info.tc_mapping[3],
383 		 vsi->info.tc_mapping[4], vsi->info.tc_mapping[5],
384 		 vsi->info.tc_mapping[6], vsi->info.tc_mapping[7]);
385 	dev_info(&pf->pdev->dev,
386 		 "    info: queueing_opt_flags = 0x%02x  queueing_opt_reserved[0..2] = 0x%02x 0x%02x 0x%02x\n",
387 		 vsi->info.queueing_opt_flags,
388 		 vsi->info.queueing_opt_reserved[0],
389 		 vsi->info.queueing_opt_reserved[1],
390 		 vsi->info.queueing_opt_reserved[2]);
391 	dev_info(&pf->pdev->dev,
392 		 "    info: up_enable_bits = 0x%02x\n",
393 		 vsi->info.up_enable_bits);
394 	dev_info(&pf->pdev->dev,
395 		 "    info: sched_reserved = 0x%02x, outer_up_table = 0x%04x\n",
396 		 vsi->info.sched_reserved, vsi->info.outer_up_table);
397 	dev_info(&pf->pdev->dev,
398 		 "    info: cmd_reserved[] = 0x%02x 0x%02x 0x%02x 0x0%02x 0x%02x 0x%02x 0x%02x 0x0%02x\n",
399 		 vsi->info.cmd_reserved[0], vsi->info.cmd_reserved[1],
400 		 vsi->info.cmd_reserved[2], vsi->info.cmd_reserved[3],
401 		 vsi->info.cmd_reserved[4], vsi->info.cmd_reserved[5],
402 		 vsi->info.cmd_reserved[6], vsi->info.cmd_reserved[7]);
403 	dev_info(&pf->pdev->dev,
404 		 "    info: qs_handle[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n",
405 		 vsi->info.qs_handle[0], vsi->info.qs_handle[1],
406 		 vsi->info.qs_handle[2], vsi->info.qs_handle[3],
407 		 vsi->info.qs_handle[4], vsi->info.qs_handle[5],
408 		 vsi->info.qs_handle[6], vsi->info.qs_handle[7]);
409 	dev_info(&pf->pdev->dev,
410 		 "    info: stat_counter_idx = 0x%04x, sched_id = 0x%04x\n",
411 		 vsi->info.stat_counter_idx, vsi->info.sched_id);
412 	dev_info(&pf->pdev->dev,
413 		 "    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",
414 		 vsi->info.resp_reserved[0], vsi->info.resp_reserved[1],
415 		 vsi->info.resp_reserved[2], vsi->info.resp_reserved[3],
416 		 vsi->info.resp_reserved[4], vsi->info.resp_reserved[5],
417 		 vsi->info.resp_reserved[6], vsi->info.resp_reserved[7],
418 		 vsi->info.resp_reserved[8], vsi->info.resp_reserved[9],
419 		 vsi->info.resp_reserved[10], vsi->info.resp_reserved[11]);
420 	dev_info(&pf->pdev->dev, "    idx = %d\n", vsi->idx);
421 	dev_info(&pf->pdev->dev,
422 		 "    tc_config: numtc = %d, enabled_tc = 0x%x\n",
423 		 vsi->tc_config.numtc, vsi->tc_config.enabled_tc);
424 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
425 		dev_info(&pf->pdev->dev,
426 			 "    tc_config: tc = %d, qoffset = %d, qcount = %d, netdev_tc = %d\n",
427 			 i, vsi->tc_config.tc_info[i].qoffset,
428 			 vsi->tc_config.tc_info[i].qcount,
429 			 vsi->tc_config.tc_info[i].netdev_tc);
430 	}
431 	dev_info(&pf->pdev->dev,
432 		 "    bw: bw_limit = %d, bw_max_quanta = %d\n",
433 		 vsi->bw_limit, vsi->bw_max_quanta);
434 	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
435 		dev_info(&pf->pdev->dev,
436 			 "    bw[%d]: ets_share_credits = %d, ets_limit_credits = %d, max_quanta = %d\n",
437 			 i, vsi->bw_ets_share_credits[i],
438 			 vsi->bw_ets_limit_credits[i],
439 			 vsi->bw_ets_max_quanta[i]);
440 	}
441 }
442 
443 /**
444  * i40e_dbg_dump_aq_desc - handles dump aq_desc write into command datum
445  * @pf: the i40e_pf created in command write
446  **/
447 static void i40e_dbg_dump_aq_desc(struct i40e_pf *pf)
448 {
449 	struct i40e_adminq_ring *ring;
450 	struct i40e_hw *hw = &pf->hw;
451 	char hdr[32];
452 	int i;
453 
454 	snprintf(hdr, sizeof(hdr), "%s %s:         ",
455 		 dev_driver_string(&pf->pdev->dev),
456 		 dev_name(&pf->pdev->dev));
457 
458 	/* first the send (command) ring, then the receive (event) ring */
459 	dev_info(&pf->pdev->dev, "AdminQ Tx Ring\n");
460 	ring = &(hw->aq.asq);
461 	for (i = 0; i < ring->count; i++) {
462 		struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
463 
464 		dev_info(&pf->pdev->dev,
465 			 "   at[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
466 			 i, d->flags, d->opcode, d->datalen, d->retval,
467 			 d->cookie_high, d->cookie_low);
468 		print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
469 			       16, 1, d->params.raw, 16, 0);
470 	}
471 
472 	dev_info(&pf->pdev->dev, "AdminQ Rx Ring\n");
473 	ring = &(hw->aq.arq);
474 	for (i = 0; i < ring->count; i++) {
475 		struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
476 
477 		dev_info(&pf->pdev->dev,
478 			 "   ar[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
479 			 i, d->flags, d->opcode, d->datalen, d->retval,
480 			 d->cookie_high, d->cookie_low);
481 		print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
482 			       16, 1, d->params.raw, 16, 0);
483 	}
484 }
485 
486 /**
487  * i40e_dbg_dump_desc - handles dump desc write into command datum
488  * @cnt: number of arguments that the user supplied
489  * @vsi_seid: vsi id entered by user
490  * @ring_id: ring id entered by user
491  * @desc_n: descriptor number entered by user
492  * @pf: the i40e_pf created in command write
493  * @is_rx_ring: true if rx, false if tx
494  **/
495 static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
496 			       struct i40e_pf *pf, bool is_rx_ring)
497 {
498 	struct i40e_tx_desc *txd;
499 	union i40e_rx_desc *rxd;
500 	struct i40e_ring *ring;
501 	struct i40e_vsi *vsi;
502 	int i;
503 
504 	vsi = i40e_dbg_find_vsi(pf, vsi_seid);
505 	if (!vsi) {
506 		dev_info(&pf->pdev->dev, "vsi %d not found\n", vsi_seid);
507 		return;
508 	}
509 	if (ring_id >= vsi->num_queue_pairs || ring_id < 0) {
510 		dev_info(&pf->pdev->dev, "ring %d not found\n", ring_id);
511 		return;
512 	}
513 	if (!vsi->tx_rings || !vsi->tx_rings[0]->desc) {
514 		dev_info(&pf->pdev->dev,
515 			 "descriptor rings have not been allocated for vsi %d\n",
516 			 vsi_seid);
517 		return;
518 	}
519 
520 	ring = kmemdup(is_rx_ring
521 		       ? vsi->rx_rings[ring_id] : vsi->tx_rings[ring_id],
522 		       sizeof(*ring), GFP_KERNEL);
523 	if (!ring)
524 		return;
525 
526 	if (cnt == 2) {
527 		dev_info(&pf->pdev->dev, "vsi = %02i %s ring = %02i\n",
528 			 vsi_seid, is_rx_ring ? "rx" : "tx", ring_id);
529 		for (i = 0; i < ring->count; i++) {
530 			if (!is_rx_ring) {
531 				txd = I40E_TX_DESC(ring, i);
532 				dev_info(&pf->pdev->dev,
533 					 "   d[%03x] = 0x%016llx 0x%016llx\n",
534 					 i, txd->buffer_addr,
535 					 txd->cmd_type_offset_bsz);
536 			} else {
537 				rxd = I40E_RX_DESC(ring, i);
538 				dev_info(&pf->pdev->dev,
539 					 "   d[%03x] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
540 					 i, rxd->read.pkt_addr,
541 					 rxd->read.hdr_addr,
542 					 rxd->read.rsvd1, rxd->read.rsvd2);
543 			}
544 		}
545 	} else if (cnt == 3) {
546 		if (desc_n >= ring->count || desc_n < 0) {
547 			dev_info(&pf->pdev->dev,
548 				 "descriptor %d not found\n", desc_n);
549 			goto out;
550 		}
551 		if (!is_rx_ring) {
552 			txd = I40E_TX_DESC(ring, desc_n);
553 			dev_info(&pf->pdev->dev,
554 				 "vsi = %02i tx ring = %02i d[%03x] = 0x%016llx 0x%016llx\n",
555 				 vsi_seid, ring_id, desc_n,
556 				 txd->buffer_addr, txd->cmd_type_offset_bsz);
557 		} else {
558 			rxd = I40E_RX_DESC(ring, desc_n);
559 			dev_info(&pf->pdev->dev,
560 				 "vsi = %02i rx ring = %02i d[%03x] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
561 				 vsi_seid, ring_id, desc_n,
562 				 rxd->read.pkt_addr, rxd->read.hdr_addr,
563 				 rxd->read.rsvd1, rxd->read.rsvd2);
564 		}
565 	} else {
566 		dev_info(&pf->pdev->dev, "dump desc rx/tx <vsi_seid> <ring_id> [<desc_n>]\n");
567 	}
568 
569 out:
570 	kfree(ring);
571 }
572 
573 /**
574  * i40e_dbg_dump_vsi_no_seid - handles dump vsi write into command datum
575  * @pf: the i40e_pf created in command write
576  **/
577 static void i40e_dbg_dump_vsi_no_seid(struct i40e_pf *pf)
578 {
579 	int i;
580 
581 	for (i = 0; i < pf->num_alloc_vsi; i++)
582 		if (pf->vsi[i])
583 			dev_info(&pf->pdev->dev, "dump vsi[%d]: %d\n",
584 				 i, pf->vsi[i]->seid);
585 }
586 
587 /**
588  * i40e_dbg_dump_stats - handles dump stats write into command datum
589  * @pf: the i40e_pf created in command write
590  * @estats: the eth stats structure to be dumped
591  **/
592 static void i40e_dbg_dump_eth_stats(struct i40e_pf *pf,
593 				    struct i40e_eth_stats *estats)
594 {
595 	dev_info(&pf->pdev->dev, "  ethstats:\n");
596 	dev_info(&pf->pdev->dev,
597 		 "    rx_bytes = \t%lld \trx_unicast = \t\t%lld \trx_multicast = \t%lld\n",
598 		estats->rx_bytes, estats->rx_unicast, estats->rx_multicast);
599 	dev_info(&pf->pdev->dev,
600 		 "    rx_broadcast = \t%lld \trx_discards = \t\t%lld\n",
601 		 estats->rx_broadcast, estats->rx_discards);
602 	dev_info(&pf->pdev->dev,
603 		 "    rx_unknown_protocol = \t%lld \ttx_bytes = \t%lld\n",
604 		 estats->rx_unknown_protocol, estats->tx_bytes);
605 	dev_info(&pf->pdev->dev,
606 		 "    tx_unicast = \t%lld \ttx_multicast = \t\t%lld \ttx_broadcast = \t%lld\n",
607 		 estats->tx_unicast, estats->tx_multicast, estats->tx_broadcast);
608 	dev_info(&pf->pdev->dev,
609 		 "    tx_discards = \t%lld \ttx_errors = \t\t%lld\n",
610 		 estats->tx_discards, estats->tx_errors);
611 }
612 
613 /**
614  * i40e_dbg_dump_veb_seid - handles dump stats of a single given veb
615  * @pf: the i40e_pf created in command write
616  * @seid: the seid the user put in
617  **/
618 static void i40e_dbg_dump_veb_seid(struct i40e_pf *pf, int seid)
619 {
620 	struct i40e_veb *veb;
621 
622 	veb = i40e_dbg_find_veb(pf, seid);
623 	if (!veb) {
624 		dev_info(&pf->pdev->dev, "can't find veb %d\n", seid);
625 		return;
626 	}
627 	dev_info(&pf->pdev->dev,
628 		 "veb idx=%d,%d stats_ic=%d  seid=%d uplink=%d mode=%s\n",
629 		 veb->idx, veb->veb_idx, veb->stats_idx, veb->seid,
630 		 veb->uplink_seid,
631 		 veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
632 	i40e_dbg_dump_eth_stats(pf, &veb->stats);
633 }
634 
635 /**
636  * i40e_dbg_dump_veb_all - dumps all known veb's stats
637  * @pf: the i40e_pf created in command write
638  **/
639 static void i40e_dbg_dump_veb_all(struct i40e_pf *pf)
640 {
641 	struct i40e_veb *veb;
642 	int i;
643 
644 	for (i = 0; i < I40E_MAX_VEB; i++) {
645 		veb = pf->veb[i];
646 		if (veb)
647 			i40e_dbg_dump_veb_seid(pf, veb->seid);
648 	}
649 }
650 
651 /**
652  * i40e_dbg_dump_vf - dump VF info
653  * @pf: the i40e_pf created in command write
654  * @vf_id: the vf_id from the user
655  **/
656 static void i40e_dbg_dump_vf(struct i40e_pf *pf, int vf_id)
657 {
658 	struct i40e_vf *vf;
659 	struct i40e_vsi *vsi;
660 
661 	if (!pf->num_alloc_vfs) {
662 		dev_info(&pf->pdev->dev, "no VFs allocated\n");
663 	} else if ((vf_id >= 0) && (vf_id < pf->num_alloc_vfs)) {
664 		vf = &pf->vf[vf_id];
665 		vsi = pf->vsi[vf->lan_vsi_idx];
666 		dev_info(&pf->pdev->dev, "vf %2d: VSI id=%d, seid=%d, qps=%d\n",
667 			 vf_id, vf->lan_vsi_id, vsi->seid, vf->num_queue_pairs);
668 		dev_info(&pf->pdev->dev, "       num MDD=%lld, invalid msg=%lld, valid msg=%lld\n",
669 			 vf->num_mdd_events,
670 			 vf->num_invalid_msgs,
671 			 vf->num_valid_msgs);
672 	} else {
673 		dev_info(&pf->pdev->dev, "invalid VF id %d\n", vf_id);
674 	}
675 }
676 
677 /**
678  * i40e_dbg_dump_vf_all - dump VF info for all VFs
679  * @pf: the i40e_pf created in command write
680  **/
681 static void i40e_dbg_dump_vf_all(struct i40e_pf *pf)
682 {
683 	int i;
684 
685 	if (!pf->num_alloc_vfs)
686 		dev_info(&pf->pdev->dev, "no VFs enabled!\n");
687 	else
688 		for (i = 0; i < pf->num_alloc_vfs; i++)
689 			i40e_dbg_dump_vf(pf, i);
690 }
691 
692 #define I40E_MAX_DEBUG_OUT_BUFFER (4096*4)
693 /**
694  * i40e_dbg_command_write - write into command datum
695  * @filp: the opened file
696  * @buffer: where to find the user's data
697  * @count: the length of the user's data
698  * @ppos: file position offset
699  **/
700 static ssize_t i40e_dbg_command_write(struct file *filp,
701 				      const char __user *buffer,
702 				      size_t count, loff_t *ppos)
703 {
704 	struct i40e_pf *pf = filp->private_data;
705 	char *cmd_buf, *cmd_buf_tmp;
706 	int bytes_not_copied;
707 	struct i40e_vsi *vsi;
708 	int vsi_seid;
709 	int veb_seid;
710 	int vf_id;
711 	int cnt;
712 
713 	/* don't allow partial writes */
714 	if (*ppos != 0)
715 		return 0;
716 
717 	cmd_buf = kzalloc(count + 1, GFP_KERNEL);
718 	if (!cmd_buf)
719 		return count;
720 	bytes_not_copied = copy_from_user(cmd_buf, buffer, count);
721 	if (bytes_not_copied) {
722 		kfree(cmd_buf);
723 		return -EFAULT;
724 	}
725 	cmd_buf[count] = '\0';
726 
727 	cmd_buf_tmp = strchr(cmd_buf, '\n');
728 	if (cmd_buf_tmp) {
729 		*cmd_buf_tmp = '\0';
730 		count = cmd_buf_tmp - cmd_buf + 1;
731 	}
732 
733 	if (strncmp(cmd_buf, "add vsi", 7) == 0) {
734 		vsi_seid = -1;
735 		cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid);
736 		if (cnt == 0) {
737 			/* default to PF VSI */
738 			vsi_seid = pf->vsi[pf->lan_vsi]->seid;
739 		} else if (vsi_seid < 0) {
740 			dev_info(&pf->pdev->dev, "add VSI %d: bad vsi seid\n",
741 				 vsi_seid);
742 			goto command_write_done;
743 		}
744 
745 		/* By default we are in VEPA mode, if this is the first VF/VMDq
746 		 * VSI to be added switch to VEB mode.
747 		 */
748 		if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
749 			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
750 			i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
751 		}
752 
753 		vsi = i40e_vsi_setup(pf, I40E_VSI_VMDQ2, vsi_seid, 0);
754 		if (vsi)
755 			dev_info(&pf->pdev->dev, "added VSI %d to relay %d\n",
756 				 vsi->seid, vsi->uplink_seid);
757 		else
758 			dev_info(&pf->pdev->dev, "'%s' failed\n", cmd_buf);
759 
760 	} else if (strncmp(cmd_buf, "del vsi", 7) == 0) {
761 		cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid);
762 		if (cnt != 1) {
763 			dev_info(&pf->pdev->dev,
764 				 "del vsi: bad command string, cnt=%d\n",
765 				 cnt);
766 			goto command_write_done;
767 		}
768 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
769 		if (!vsi) {
770 			dev_info(&pf->pdev->dev, "del VSI %d: seid not found\n",
771 				 vsi_seid);
772 			goto command_write_done;
773 		}
774 
775 		dev_info(&pf->pdev->dev, "deleting VSI %d\n", vsi_seid);
776 		i40e_vsi_release(vsi);
777 
778 	} else if (strncmp(cmd_buf, "add relay", 9) == 0) {
779 		struct i40e_veb *veb;
780 		int uplink_seid, i;
781 
782 		cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid);
783 		if (cnt != 2) {
784 			dev_info(&pf->pdev->dev,
785 				 "add relay: bad command string, cnt=%d\n",
786 				 cnt);
787 			goto command_write_done;
788 		} else if (uplink_seid < 0) {
789 			dev_info(&pf->pdev->dev,
790 				 "add relay %d: bad uplink seid\n",
791 				 uplink_seid);
792 			goto command_write_done;
793 		}
794 
795 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
796 		if (!vsi) {
797 			dev_info(&pf->pdev->dev,
798 				 "add relay: VSI %d not found\n", vsi_seid);
799 			goto command_write_done;
800 		}
801 
802 		for (i = 0; i < I40E_MAX_VEB; i++)
803 			if (pf->veb[i] && pf->veb[i]->seid == uplink_seid)
804 				break;
805 		if (i >= I40E_MAX_VEB && uplink_seid != 0 &&
806 		    uplink_seid != pf->mac_seid) {
807 			dev_info(&pf->pdev->dev,
808 				 "add relay: relay uplink %d not found\n",
809 				 uplink_seid);
810 			goto command_write_done;
811 		}
812 
813 		veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid,
814 				     vsi->tc_config.enabled_tc);
815 		if (veb)
816 			dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid);
817 		else
818 			dev_info(&pf->pdev->dev, "add relay failed\n");
819 
820 	} else if (strncmp(cmd_buf, "del relay", 9) == 0) {
821 		int i;
822 		cnt = sscanf(&cmd_buf[9], "%i", &veb_seid);
823 		if (cnt != 1) {
824 			dev_info(&pf->pdev->dev,
825 				 "del relay: bad command string, cnt=%d\n",
826 				 cnt);
827 			goto command_write_done;
828 		} else if (veb_seid < 0) {
829 			dev_info(&pf->pdev->dev,
830 				 "del relay %d: bad relay seid\n", veb_seid);
831 			goto command_write_done;
832 		}
833 
834 		/* find the veb */
835 		for (i = 0; i < I40E_MAX_VEB; i++)
836 			if (pf->veb[i] && pf->veb[i]->seid == veb_seid)
837 				break;
838 		if (i >= I40E_MAX_VEB) {
839 			dev_info(&pf->pdev->dev,
840 				 "del relay: relay %d not found\n", veb_seid);
841 			goto command_write_done;
842 		}
843 
844 		dev_info(&pf->pdev->dev, "deleting relay %d\n", veb_seid);
845 		i40e_veb_release(pf->veb[i]);
846 	} else if (strncmp(cmd_buf, "add pvid", 8) == 0) {
847 		i40e_status ret;
848 		u16 vid;
849 		unsigned int v;
850 
851 		cnt = sscanf(&cmd_buf[8], "%i %u", &vsi_seid, &v);
852 		if (cnt != 2) {
853 			dev_info(&pf->pdev->dev,
854 				 "add pvid: bad command string, cnt=%d\n", cnt);
855 			goto command_write_done;
856 		}
857 
858 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
859 		if (!vsi) {
860 			dev_info(&pf->pdev->dev, "add pvid: VSI %d not found\n",
861 				 vsi_seid);
862 			goto command_write_done;
863 		}
864 
865 		vid = v;
866 		ret = i40e_vsi_add_pvid(vsi, vid);
867 		if (!ret)
868 			dev_info(&pf->pdev->dev,
869 				 "add pvid: %d added to VSI %d\n",
870 				 vid, vsi_seid);
871 		else
872 			dev_info(&pf->pdev->dev,
873 				 "add pvid: %d to VSI %d failed, ret=%d\n",
874 				 vid, vsi_seid, ret);
875 
876 	} else if (strncmp(cmd_buf, "del pvid", 8) == 0) {
877 
878 		cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
879 		if (cnt != 1) {
880 			dev_info(&pf->pdev->dev,
881 				 "del pvid: bad command string, cnt=%d\n",
882 				 cnt);
883 			goto command_write_done;
884 		}
885 
886 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
887 		if (!vsi) {
888 			dev_info(&pf->pdev->dev,
889 				 "del pvid: VSI %d not found\n", vsi_seid);
890 			goto command_write_done;
891 		}
892 
893 		i40e_vsi_remove_pvid(vsi);
894 		dev_info(&pf->pdev->dev,
895 			 "del pvid: removed from VSI %d\n", vsi_seid);
896 
897 	} else if (strncmp(cmd_buf, "dump", 4) == 0) {
898 		if (strncmp(&cmd_buf[5], "switch", 6) == 0) {
899 			i40e_fetch_switch_configuration(pf, true);
900 		} else if (strncmp(&cmd_buf[5], "vsi", 3) == 0) {
901 			cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
902 			if (cnt > 0)
903 				i40e_dbg_dump_vsi_seid(pf, vsi_seid);
904 			else
905 				i40e_dbg_dump_vsi_no_seid(pf);
906 		} else if (strncmp(&cmd_buf[5], "veb", 3) == 0) {
907 			cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
908 			if (cnt > 0)
909 				i40e_dbg_dump_veb_seid(pf, vsi_seid);
910 			else
911 				i40e_dbg_dump_veb_all(pf);
912 		} else if (strncmp(&cmd_buf[5], "vf", 2) == 0) {
913 			cnt = sscanf(&cmd_buf[7], "%i", &vf_id);
914 			if (cnt > 0)
915 				i40e_dbg_dump_vf(pf, vf_id);
916 			else
917 				i40e_dbg_dump_vf_all(pf);
918 		} else if (strncmp(&cmd_buf[5], "desc", 4) == 0) {
919 			int ring_id, desc_n;
920 			if (strncmp(&cmd_buf[10], "rx", 2) == 0) {
921 				cnt = sscanf(&cmd_buf[12], "%i %i %i",
922 					     &vsi_seid, &ring_id, &desc_n);
923 				i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
924 						   desc_n, pf, true);
925 			} else if (strncmp(&cmd_buf[10], "tx", 2)
926 					== 0) {
927 				cnt = sscanf(&cmd_buf[12], "%i %i %i",
928 					     &vsi_seid, &ring_id, &desc_n);
929 				i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
930 						   desc_n, pf, false);
931 			} else if (strncmp(&cmd_buf[10], "aq", 2) == 0) {
932 				i40e_dbg_dump_aq_desc(pf);
933 			} else {
934 				dev_info(&pf->pdev->dev,
935 					 "dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
936 				dev_info(&pf->pdev->dev,
937 					 "dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
938 				dev_info(&pf->pdev->dev, "dump desc aq\n");
939 			}
940 		} else if (strncmp(&cmd_buf[5], "reset stats", 11) == 0) {
941 			dev_info(&pf->pdev->dev,
942 				 "core reset count: %d\n", pf->corer_count);
943 			dev_info(&pf->pdev->dev,
944 				 "global reset count: %d\n", pf->globr_count);
945 			dev_info(&pf->pdev->dev,
946 				 "emp reset count: %d\n", pf->empr_count);
947 			dev_info(&pf->pdev->dev,
948 				 "pf reset count: %d\n", pf->pfr_count);
949 			dev_info(&pf->pdev->dev,
950 				 "pf tx sluggish count: %d\n",
951 				 pf->tx_sluggish_count);
952 		} else if (strncmp(&cmd_buf[5], "port", 4) == 0) {
953 			struct i40e_aqc_query_port_ets_config_resp *bw_data;
954 			struct i40e_dcbx_config *cfg =
955 						&pf->hw.local_dcbx_config;
956 			struct i40e_dcbx_config *r_cfg =
957 						&pf->hw.remote_dcbx_config;
958 			int i, ret;
959 			u16 switch_id;
960 
961 			bw_data = kzalloc(sizeof(
962 				    struct i40e_aqc_query_port_ets_config_resp),
963 					  GFP_KERNEL);
964 			if (!bw_data) {
965 				ret = -ENOMEM;
966 				goto command_write_done;
967 			}
968 
969 			vsi = pf->vsi[pf->lan_vsi];
970 			switch_id =
971 				le16_to_cpu(vsi->info.switch_id) &
972 					    I40E_AQ_VSI_SW_ID_MASK;
973 
974 			ret = i40e_aq_query_port_ets_config(&pf->hw,
975 							    switch_id,
976 							    bw_data, NULL);
977 			if (ret) {
978 				dev_info(&pf->pdev->dev,
979 					 "Query Port ETS Config AQ command failed =0x%x\n",
980 					 pf->hw.aq.asq_last_status);
981 				kfree(bw_data);
982 				bw_data = NULL;
983 				goto command_write_done;
984 			}
985 			dev_info(&pf->pdev->dev,
986 				 "port bw: tc_valid=0x%x tc_strict_prio=0x%x, tc_bw_max=0x%04x,0x%04x\n",
987 				 bw_data->tc_valid_bits,
988 				 bw_data->tc_strict_priority_bits,
989 				 le16_to_cpu(bw_data->tc_bw_max[0]),
990 				 le16_to_cpu(bw_data->tc_bw_max[1]));
991 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
992 				dev_info(&pf->pdev->dev, "port bw: tc_bw_share=%d tc_bw_limit=%d\n",
993 					 bw_data->tc_bw_share_credits[i],
994 					 le16_to_cpu(bw_data->tc_bw_limits[i]));
995 			}
996 
997 			kfree(bw_data);
998 			bw_data = NULL;
999 
1000 			dev_info(&pf->pdev->dev,
1001 				 "port dcbx_mode=%d\n", cfg->dcbx_mode);
1002 			dev_info(&pf->pdev->dev,
1003 				 "port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1004 				 cfg->etscfg.willing, cfg->etscfg.cbs,
1005 				 cfg->etscfg.maxtcs);
1006 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1007 				dev_info(&pf->pdev->dev, "port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1008 					 i, cfg->etscfg.prioritytable[i],
1009 					 cfg->etscfg.tcbwtable[i],
1010 					 cfg->etscfg.tsatable[i]);
1011 			}
1012 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1013 				dev_info(&pf->pdev->dev, "port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1014 					 i, cfg->etsrec.prioritytable[i],
1015 					 cfg->etsrec.tcbwtable[i],
1016 					 cfg->etsrec.tsatable[i]);
1017 			}
1018 			dev_info(&pf->pdev->dev,
1019 				 "port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1020 				 cfg->pfc.willing, cfg->pfc.mbc,
1021 				 cfg->pfc.pfccap, cfg->pfc.pfcenable);
1022 			dev_info(&pf->pdev->dev,
1023 				 "port app_table: num_apps=%d\n", cfg->numapps);
1024 			for (i = 0; i < cfg->numapps; i++) {
1025 				dev_info(&pf->pdev->dev, "port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1026 					 i, cfg->app[i].priority,
1027 					 cfg->app[i].selector,
1028 					 cfg->app[i].protocolid);
1029 			}
1030 			/* Peer TLV DCBX data */
1031 			dev_info(&pf->pdev->dev,
1032 				 "remote port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1033 				 r_cfg->etscfg.willing,
1034 				 r_cfg->etscfg.cbs, r_cfg->etscfg.maxtcs);
1035 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1036 				dev_info(&pf->pdev->dev, "remote port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1037 					 i, r_cfg->etscfg.prioritytable[i],
1038 					 r_cfg->etscfg.tcbwtable[i],
1039 					 r_cfg->etscfg.tsatable[i]);
1040 			}
1041 			for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1042 				dev_info(&pf->pdev->dev, "remote port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1043 					 i, r_cfg->etsrec.prioritytable[i],
1044 					 r_cfg->etsrec.tcbwtable[i],
1045 					 r_cfg->etsrec.tsatable[i]);
1046 			}
1047 			dev_info(&pf->pdev->dev,
1048 				 "remote port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1049 				 r_cfg->pfc.willing,
1050 				 r_cfg->pfc.mbc,
1051 				 r_cfg->pfc.pfccap,
1052 				 r_cfg->pfc.pfcenable);
1053 			dev_info(&pf->pdev->dev,
1054 				 "remote port app_table: num_apps=%d\n",
1055 				 r_cfg->numapps);
1056 			for (i = 0; i < r_cfg->numapps; i++) {
1057 				dev_info(&pf->pdev->dev, "remote port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1058 					 i, r_cfg->app[i].priority,
1059 					 r_cfg->app[i].selector,
1060 					 r_cfg->app[i].protocolid);
1061 			}
1062 		} else if (strncmp(&cmd_buf[5], "debug fwdata", 12) == 0) {
1063 			int cluster_id, table_id;
1064 			int index, ret;
1065 			u16 buff_len = 4096;
1066 			u32 next_index;
1067 			u8 next_table;
1068 			u8 *buff;
1069 			u16 rlen;
1070 
1071 			cnt = sscanf(&cmd_buf[18], "%i %i %i",
1072 				     &cluster_id, &table_id, &index);
1073 			if (cnt != 3) {
1074 				dev_info(&pf->pdev->dev,
1075 					 "dump debug fwdata <cluster_id> <table_id> <index>\n");
1076 				goto command_write_done;
1077 			}
1078 
1079 			dev_info(&pf->pdev->dev,
1080 				 "AQ debug dump fwdata params %x %x %x %x\n",
1081 				 cluster_id, table_id, index, buff_len);
1082 			buff = kzalloc(buff_len, GFP_KERNEL);
1083 			if (!buff)
1084 				goto command_write_done;
1085 
1086 			ret = i40e_aq_debug_dump(&pf->hw, cluster_id, table_id,
1087 						 index, buff_len, buff, &rlen,
1088 						 &next_table, &next_index,
1089 						 NULL);
1090 			if (ret) {
1091 				dev_info(&pf->pdev->dev,
1092 					 "debug dump fwdata AQ Failed %d 0x%x\n",
1093 					 ret, pf->hw.aq.asq_last_status);
1094 				kfree(buff);
1095 				buff = NULL;
1096 				goto command_write_done;
1097 			}
1098 			dev_info(&pf->pdev->dev,
1099 				 "AQ debug dump fwdata rlen=0x%x next_table=0x%x next_index=0x%x\n",
1100 				 rlen, next_table, next_index);
1101 			print_hex_dump(KERN_INFO, "AQ buffer WB: ",
1102 				       DUMP_PREFIX_OFFSET, 16, 1,
1103 				       buff, rlen, true);
1104 			kfree(buff);
1105 			buff = NULL;
1106 		} else {
1107 			dev_info(&pf->pdev->dev,
1108 				 "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>],\n");
1109 			dev_info(&pf->pdev->dev, "dump switch\n");
1110 			dev_info(&pf->pdev->dev, "dump vsi [seid]\n");
1111 			dev_info(&pf->pdev->dev, "dump reset stats\n");
1112 			dev_info(&pf->pdev->dev, "dump port\n");
1113 			dev_info(&pf->pdev->dev, "dump vf [vf_id]\n");
1114 			dev_info(&pf->pdev->dev,
1115 				 "dump debug fwdata <cluster_id> <table_id> <index>\n");
1116 		}
1117 	} else if (strncmp(cmd_buf, "pfr", 3) == 0) {
1118 		dev_info(&pf->pdev->dev, "debugfs: forcing PFR\n");
1119 		i40e_do_reset_safe(pf, BIT(__I40E_PF_RESET_REQUESTED));
1120 
1121 	} else if (strncmp(cmd_buf, "corer", 5) == 0) {
1122 		dev_info(&pf->pdev->dev, "debugfs: forcing CoreR\n");
1123 		i40e_do_reset_safe(pf, BIT(__I40E_CORE_RESET_REQUESTED));
1124 
1125 	} else if (strncmp(cmd_buf, "globr", 5) == 0) {
1126 		dev_info(&pf->pdev->dev, "debugfs: forcing GlobR\n");
1127 		i40e_do_reset_safe(pf, BIT(__I40E_GLOBAL_RESET_REQUESTED));
1128 
1129 	} else if (strncmp(cmd_buf, "empr", 4) == 0) {
1130 		dev_info(&pf->pdev->dev, "debugfs: forcing EMPR\n");
1131 		i40e_do_reset_safe(pf, BIT(__I40E_EMP_RESET_REQUESTED));
1132 
1133 	} else if (strncmp(cmd_buf, "read", 4) == 0) {
1134 		u32 address;
1135 		u32 value;
1136 
1137 		cnt = sscanf(&cmd_buf[4], "%i", &address);
1138 		if (cnt != 1) {
1139 			dev_info(&pf->pdev->dev, "read <reg>\n");
1140 			goto command_write_done;
1141 		}
1142 
1143 		/* check the range on address */
1144 		if (address > (pf->ioremap_len - sizeof(u32))) {
1145 			dev_info(&pf->pdev->dev, "read reg address 0x%08x too large, max=0x%08lx\n",
1146 				 address, (unsigned long int)(pf->ioremap_len - sizeof(u32)));
1147 			goto command_write_done;
1148 		}
1149 
1150 		value = rd32(&pf->hw, address);
1151 		dev_info(&pf->pdev->dev, "read: 0x%08x = 0x%08x\n",
1152 			 address, value);
1153 
1154 	} else if (strncmp(cmd_buf, "write", 5) == 0) {
1155 		u32 address, value;
1156 
1157 		cnt = sscanf(&cmd_buf[5], "%i %i", &address, &value);
1158 		if (cnt != 2) {
1159 			dev_info(&pf->pdev->dev, "write <reg> <value>\n");
1160 			goto command_write_done;
1161 		}
1162 
1163 		/* check the range on address */
1164 		if (address > (pf->ioremap_len - sizeof(u32))) {
1165 			dev_info(&pf->pdev->dev, "write reg address 0x%08x too large, max=0x%08lx\n",
1166 				 address, (unsigned long int)(pf->ioremap_len - sizeof(u32)));
1167 			goto command_write_done;
1168 		}
1169 		wr32(&pf->hw, address, value);
1170 		value = rd32(&pf->hw, address);
1171 		dev_info(&pf->pdev->dev, "write: 0x%08x = 0x%08x\n",
1172 			 address, value);
1173 	} else if (strncmp(cmd_buf, "clear_stats", 11) == 0) {
1174 		if (strncmp(&cmd_buf[12], "vsi", 3) == 0) {
1175 			cnt = sscanf(&cmd_buf[15], "%i", &vsi_seid);
1176 			if (cnt == 0) {
1177 				int i;
1178 
1179 				for (i = 0; i < pf->num_alloc_vsi; i++)
1180 					i40e_vsi_reset_stats(pf->vsi[i]);
1181 				dev_info(&pf->pdev->dev, "vsi clear stats called for all vsi's\n");
1182 			} else if (cnt == 1) {
1183 				vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1184 				if (!vsi) {
1185 					dev_info(&pf->pdev->dev,
1186 						 "clear_stats vsi: bad vsi %d\n",
1187 						 vsi_seid);
1188 					goto command_write_done;
1189 				}
1190 				i40e_vsi_reset_stats(vsi);
1191 				dev_info(&pf->pdev->dev,
1192 					 "vsi clear stats called for vsi %d\n",
1193 					 vsi_seid);
1194 			} else {
1195 				dev_info(&pf->pdev->dev, "clear_stats vsi [seid]\n");
1196 			}
1197 		} else if (strncmp(&cmd_buf[12], "port", 4) == 0) {
1198 			if (pf->hw.partition_id == 1) {
1199 				i40e_pf_reset_stats(pf);
1200 				dev_info(&pf->pdev->dev, "port stats cleared\n");
1201 			} else {
1202 				dev_info(&pf->pdev->dev, "clear port stats not allowed on this port partition\n");
1203 			}
1204 		} else {
1205 			dev_info(&pf->pdev->dev, "clear_stats vsi [seid] or clear_stats port\n");
1206 		}
1207 	} else if (strncmp(cmd_buf, "send aq_cmd", 11) == 0) {
1208 		struct i40e_aq_desc *desc;
1209 		i40e_status ret;
1210 
1211 		desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1212 		if (!desc)
1213 			goto command_write_done;
1214 		cnt = sscanf(&cmd_buf[11],
1215 			     "%hi %hi %hi %hi %i %i %i %i %i %i",
1216 			     &desc->flags,
1217 			     &desc->opcode, &desc->datalen, &desc->retval,
1218 			     &desc->cookie_high, &desc->cookie_low,
1219 			     &desc->params.internal.param0,
1220 			     &desc->params.internal.param1,
1221 			     &desc->params.internal.param2,
1222 			     &desc->params.internal.param3);
1223 		if (cnt != 10) {
1224 			dev_info(&pf->pdev->dev,
1225 				 "send aq_cmd: bad command string, cnt=%d\n",
1226 				 cnt);
1227 			kfree(desc);
1228 			desc = NULL;
1229 			goto command_write_done;
1230 		}
1231 		ret = i40e_asq_send_command(&pf->hw, desc, NULL, 0, NULL);
1232 		if (!ret) {
1233 			dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1234 		} else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1235 			dev_info(&pf->pdev->dev,
1236 				 "AQ command send failed Opcode %x AQ Error: %d\n",
1237 				 desc->opcode, pf->hw.aq.asq_last_status);
1238 		} else {
1239 			dev_info(&pf->pdev->dev,
1240 				 "AQ command send failed Opcode %x Status: %d\n",
1241 				 desc->opcode, ret);
1242 		}
1243 		dev_info(&pf->pdev->dev,
1244 			 "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1245 			 desc->flags, desc->opcode, desc->datalen, desc->retval,
1246 			 desc->cookie_high, desc->cookie_low,
1247 			 desc->params.internal.param0,
1248 			 desc->params.internal.param1,
1249 			 desc->params.internal.param2,
1250 			 desc->params.internal.param3);
1251 		kfree(desc);
1252 		desc = NULL;
1253 	} else if (strncmp(cmd_buf, "send indirect aq_cmd", 20) == 0) {
1254 		struct i40e_aq_desc *desc;
1255 		i40e_status ret;
1256 		u16 buffer_len;
1257 		u8 *buff;
1258 
1259 		desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1260 		if (!desc)
1261 			goto command_write_done;
1262 		cnt = sscanf(&cmd_buf[20],
1263 			     "%hi %hi %hi %hi %i %i %i %i %i %i %hi",
1264 			     &desc->flags,
1265 			     &desc->opcode, &desc->datalen, &desc->retval,
1266 			     &desc->cookie_high, &desc->cookie_low,
1267 			     &desc->params.internal.param0,
1268 			     &desc->params.internal.param1,
1269 			     &desc->params.internal.param2,
1270 			     &desc->params.internal.param3,
1271 			     &buffer_len);
1272 		if (cnt != 11) {
1273 			dev_info(&pf->pdev->dev,
1274 				 "send indirect aq_cmd: bad command string, cnt=%d\n",
1275 				 cnt);
1276 			kfree(desc);
1277 			desc = NULL;
1278 			goto command_write_done;
1279 		}
1280 		/* Just stub a buffer big enough in case user messed up */
1281 		if (buffer_len == 0)
1282 			buffer_len = 1280;
1283 
1284 		buff = kzalloc(buffer_len, GFP_KERNEL);
1285 		if (!buff) {
1286 			kfree(desc);
1287 			desc = NULL;
1288 			goto command_write_done;
1289 		}
1290 		desc->flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
1291 		ret = i40e_asq_send_command(&pf->hw, desc, buff,
1292 					    buffer_len, NULL);
1293 		if (!ret) {
1294 			dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1295 		} else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1296 			dev_info(&pf->pdev->dev,
1297 				 "AQ command send failed Opcode %x AQ Error: %d\n",
1298 				 desc->opcode, pf->hw.aq.asq_last_status);
1299 		} else {
1300 			dev_info(&pf->pdev->dev,
1301 				 "AQ command send failed Opcode %x Status: %d\n",
1302 				 desc->opcode, ret);
1303 		}
1304 		dev_info(&pf->pdev->dev,
1305 			 "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1306 			 desc->flags, desc->opcode, desc->datalen, desc->retval,
1307 			 desc->cookie_high, desc->cookie_low,
1308 			 desc->params.internal.param0,
1309 			 desc->params.internal.param1,
1310 			 desc->params.internal.param2,
1311 			 desc->params.internal.param3);
1312 		print_hex_dump(KERN_INFO, "AQ buffer WB: ",
1313 			       DUMP_PREFIX_OFFSET, 16, 1,
1314 			       buff, buffer_len, true);
1315 		kfree(buff);
1316 		buff = NULL;
1317 		kfree(desc);
1318 		desc = NULL;
1319 	} else if (strncmp(cmd_buf, "fd current cnt", 14) == 0) {
1320 		dev_info(&pf->pdev->dev, "FD current total filter count for this interface: %d\n",
1321 			 i40e_get_current_fd_count(pf));
1322 	} else if (strncmp(cmd_buf, "lldp", 4) == 0) {
1323 		if (strncmp(&cmd_buf[5], "stop", 4) == 0) {
1324 			int ret;
1325 
1326 			ret = i40e_aq_stop_lldp(&pf->hw, false, NULL);
1327 			if (ret) {
1328 				dev_info(&pf->pdev->dev,
1329 					 "Stop LLDP AQ command failed =0x%x\n",
1330 					 pf->hw.aq.asq_last_status);
1331 				goto command_write_done;
1332 			}
1333 			ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1334 						pf->hw.mac.addr,
1335 						I40E_ETH_P_LLDP, 0,
1336 						pf->vsi[pf->lan_vsi]->seid,
1337 						0, true, NULL, NULL);
1338 			if (ret) {
1339 				dev_info(&pf->pdev->dev,
1340 					"%s: Add Control Packet Filter AQ command failed =0x%x\n",
1341 					__func__, pf->hw.aq.asq_last_status);
1342 				goto command_write_done;
1343 			}
1344 #ifdef CONFIG_I40E_DCB
1345 			pf->dcbx_cap = DCB_CAP_DCBX_HOST |
1346 				       DCB_CAP_DCBX_VER_IEEE;
1347 #endif /* CONFIG_I40E_DCB */
1348 		} else if (strncmp(&cmd_buf[5], "start", 5) == 0) {
1349 			int ret;
1350 
1351 			ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1352 						pf->hw.mac.addr,
1353 						I40E_ETH_P_LLDP, 0,
1354 						pf->vsi[pf->lan_vsi]->seid,
1355 						0, false, NULL, NULL);
1356 			if (ret) {
1357 				dev_info(&pf->pdev->dev,
1358 					"%s: Remove Control Packet Filter AQ command failed =0x%x\n",
1359 					__func__, pf->hw.aq.asq_last_status);
1360 				/* Continue and start FW LLDP anyways */
1361 			}
1362 
1363 			ret = i40e_aq_start_lldp(&pf->hw, NULL);
1364 			if (ret) {
1365 				dev_info(&pf->pdev->dev,
1366 					 "Start LLDP AQ command failed =0x%x\n",
1367 					 pf->hw.aq.asq_last_status);
1368 				goto command_write_done;
1369 			}
1370 #ifdef CONFIG_I40E_DCB
1371 			pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
1372 				       DCB_CAP_DCBX_VER_IEEE;
1373 #endif /* CONFIG_I40E_DCB */
1374 		} else if (strncmp(&cmd_buf[5],
1375 			   "get local", 9) == 0) {
1376 			u16 llen, rlen;
1377 			int ret;
1378 			u8 *buff;
1379 
1380 			buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1381 			if (!buff)
1382 				goto command_write_done;
1383 
1384 			ret = i40e_aq_get_lldp_mib(&pf->hw, 0,
1385 						   I40E_AQ_LLDP_MIB_LOCAL,
1386 						   buff, I40E_LLDPDU_SIZE,
1387 						   &llen, &rlen, NULL);
1388 			if (ret) {
1389 				dev_info(&pf->pdev->dev,
1390 					 "Get LLDP MIB (local) AQ command failed =0x%x\n",
1391 					 pf->hw.aq.asq_last_status);
1392 				kfree(buff);
1393 				buff = NULL;
1394 				goto command_write_done;
1395 			}
1396 			dev_info(&pf->pdev->dev, "LLDP MIB (local)\n");
1397 			print_hex_dump(KERN_INFO, "LLDP MIB (local): ",
1398 				       DUMP_PREFIX_OFFSET, 16, 1,
1399 				       buff, I40E_LLDPDU_SIZE, true);
1400 			kfree(buff);
1401 			buff = NULL;
1402 		} else if (strncmp(&cmd_buf[5], "get remote", 10) == 0) {
1403 			u16 llen, rlen;
1404 			int ret;
1405 			u8 *buff;
1406 
1407 			buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1408 			if (!buff)
1409 				goto command_write_done;
1410 
1411 			ret = i40e_aq_get_lldp_mib(&pf->hw,
1412 					I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
1413 					I40E_AQ_LLDP_MIB_REMOTE,
1414 					buff, I40E_LLDPDU_SIZE,
1415 					&llen, &rlen, NULL);
1416 			if (ret) {
1417 				dev_info(&pf->pdev->dev,
1418 					 "Get LLDP MIB (remote) AQ command failed =0x%x\n",
1419 					 pf->hw.aq.asq_last_status);
1420 				kfree(buff);
1421 				buff = NULL;
1422 				goto command_write_done;
1423 			}
1424 			dev_info(&pf->pdev->dev, "LLDP MIB (remote)\n");
1425 			print_hex_dump(KERN_INFO, "LLDP MIB (remote): ",
1426 				       DUMP_PREFIX_OFFSET, 16, 1,
1427 				       buff, I40E_LLDPDU_SIZE, true);
1428 			kfree(buff);
1429 			buff = NULL;
1430 		} else if (strncmp(&cmd_buf[5], "event on", 8) == 0) {
1431 			int ret;
1432 
1433 			ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1434 								true, NULL);
1435 			if (ret) {
1436 				dev_info(&pf->pdev->dev,
1437 					 "Config LLDP MIB Change Event (on) AQ command failed =0x%x\n",
1438 					 pf->hw.aq.asq_last_status);
1439 				goto command_write_done;
1440 			}
1441 		} else if (strncmp(&cmd_buf[5], "event off", 9) == 0) {
1442 			int ret;
1443 
1444 			ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1445 								false, NULL);
1446 			if (ret) {
1447 				dev_info(&pf->pdev->dev,
1448 					 "Config LLDP MIB Change Event (off) AQ command failed =0x%x\n",
1449 					 pf->hw.aq.asq_last_status);
1450 				goto command_write_done;
1451 			}
1452 		}
1453 	} else if (strncmp(cmd_buf, "nvm read", 8) == 0) {
1454 		u16 buffer_len, bytes;
1455 		u16 module;
1456 		u32 offset;
1457 		u16 *buff;
1458 		int ret;
1459 
1460 		cnt = sscanf(&cmd_buf[8], "%hx %x %hx",
1461 			     &module, &offset, &buffer_len);
1462 		if (cnt == 0) {
1463 			module = 0;
1464 			offset = 0;
1465 			buffer_len = 0;
1466 		} else if (cnt == 1) {
1467 			offset = 0;
1468 			buffer_len = 0;
1469 		} else if (cnt == 2) {
1470 			buffer_len = 0;
1471 		} else if (cnt > 3) {
1472 			dev_info(&pf->pdev->dev,
1473 				 "nvm read: bad command string, cnt=%d\n", cnt);
1474 			goto command_write_done;
1475 		}
1476 
1477 		/* set the max length */
1478 		buffer_len = min_t(u16, buffer_len, I40E_MAX_AQ_BUF_SIZE/2);
1479 
1480 		bytes = 2 * buffer_len;
1481 
1482 		/* read at least 1k bytes, no more than 4kB */
1483 		bytes = clamp(bytes, (u16)1024, (u16)I40E_MAX_AQ_BUF_SIZE);
1484 		buff = kzalloc(bytes, GFP_KERNEL);
1485 		if (!buff)
1486 			goto command_write_done;
1487 
1488 		ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
1489 		if (ret) {
1490 			dev_info(&pf->pdev->dev,
1491 				 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1492 				 ret, pf->hw.aq.asq_last_status);
1493 			kfree(buff);
1494 			goto command_write_done;
1495 		}
1496 
1497 		ret = i40e_aq_read_nvm(&pf->hw, module, (2 * offset),
1498 				       bytes, (u8 *)buff, true, NULL);
1499 		i40e_release_nvm(&pf->hw);
1500 		if (ret) {
1501 			dev_info(&pf->pdev->dev,
1502 				 "Read NVM AQ failed err=%d status=0x%x\n",
1503 				 ret, pf->hw.aq.asq_last_status);
1504 		} else {
1505 			dev_info(&pf->pdev->dev,
1506 				 "Read NVM module=0x%x offset=0x%x words=%d\n",
1507 				 module, offset, buffer_len);
1508 			if (bytes)
1509 				print_hex_dump(KERN_INFO, "NVM Dump: ",
1510 					DUMP_PREFIX_OFFSET, 16, 2,
1511 					buff, bytes, true);
1512 		}
1513 		kfree(buff);
1514 		buff = NULL;
1515 	} else {
1516 		dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf);
1517 		dev_info(&pf->pdev->dev, "available commands\n");
1518 		dev_info(&pf->pdev->dev, "  add vsi [relay_seid]\n");
1519 		dev_info(&pf->pdev->dev, "  del vsi [vsi_seid]\n");
1520 		dev_info(&pf->pdev->dev, "  add relay <uplink_seid> <vsi_seid>\n");
1521 		dev_info(&pf->pdev->dev, "  del relay <relay_seid>\n");
1522 		dev_info(&pf->pdev->dev, "  add pvid <vsi_seid> <vid>\n");
1523 		dev_info(&pf->pdev->dev, "  del pvid <vsi_seid>\n");
1524 		dev_info(&pf->pdev->dev, "  dump switch\n");
1525 		dev_info(&pf->pdev->dev, "  dump vsi [seid]\n");
1526 		dev_info(&pf->pdev->dev, "  dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
1527 		dev_info(&pf->pdev->dev, "  dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
1528 		dev_info(&pf->pdev->dev, "  dump desc aq\n");
1529 		dev_info(&pf->pdev->dev, "  dump reset stats\n");
1530 		dev_info(&pf->pdev->dev, "  dump debug fwdata <cluster_id> <table_id> <index>\n");
1531 		dev_info(&pf->pdev->dev, "  read <reg>\n");
1532 		dev_info(&pf->pdev->dev, "  write <reg> <value>\n");
1533 		dev_info(&pf->pdev->dev, "  clear_stats vsi [seid]\n");
1534 		dev_info(&pf->pdev->dev, "  clear_stats port\n");
1535 		dev_info(&pf->pdev->dev, "  pfr\n");
1536 		dev_info(&pf->pdev->dev, "  corer\n");
1537 		dev_info(&pf->pdev->dev, "  globr\n");
1538 		dev_info(&pf->pdev->dev, "  send aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3>\n");
1539 		dev_info(&pf->pdev->dev, "  send indirect aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3> <buffer_len>\n");
1540 		dev_info(&pf->pdev->dev, "  fd current cnt");
1541 		dev_info(&pf->pdev->dev, "  lldp start\n");
1542 		dev_info(&pf->pdev->dev, "  lldp stop\n");
1543 		dev_info(&pf->pdev->dev, "  lldp get local\n");
1544 		dev_info(&pf->pdev->dev, "  lldp get remote\n");
1545 		dev_info(&pf->pdev->dev, "  lldp event on\n");
1546 		dev_info(&pf->pdev->dev, "  lldp event off\n");
1547 		dev_info(&pf->pdev->dev, "  nvm read [module] [word_offset] [word_count]\n");
1548 	}
1549 
1550 command_write_done:
1551 	kfree(cmd_buf);
1552 	cmd_buf = NULL;
1553 	return count;
1554 }
1555 
1556 static const struct file_operations i40e_dbg_command_fops = {
1557 	.owner = THIS_MODULE,
1558 	.open =  simple_open,
1559 	.read =  i40e_dbg_command_read,
1560 	.write = i40e_dbg_command_write,
1561 };
1562 
1563 /**************************************************************
1564  * netdev_ops
1565  * The netdev_ops entry in debugfs is for giving the driver commands
1566  * to be executed from the netdev operations.
1567  **************************************************************/
1568 static char i40e_dbg_netdev_ops_buf[256] = "";
1569 
1570 /**
1571  * i40e_dbg_netdev_ops - read for netdev_ops datum
1572  * @filp: the opened file
1573  * @buffer: where to write the data for the user to read
1574  * @count: the size of the user's buffer
1575  * @ppos: file position offset
1576  **/
1577 static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer,
1578 					size_t count, loff_t *ppos)
1579 {
1580 	struct i40e_pf *pf = filp->private_data;
1581 	int bytes_not_copied;
1582 	int buf_size = 256;
1583 	char *buf;
1584 	int len;
1585 
1586 	/* don't allow partal reads */
1587 	if (*ppos != 0)
1588 		return 0;
1589 	if (count < buf_size)
1590 		return -ENOSPC;
1591 
1592 	buf = kzalloc(buf_size, GFP_KERNEL);
1593 	if (!buf)
1594 		return -ENOSPC;
1595 
1596 	len = snprintf(buf, buf_size, "%s: %s\n",
1597 		       pf->vsi[pf->lan_vsi]->netdev->name,
1598 		       i40e_dbg_netdev_ops_buf);
1599 
1600 	bytes_not_copied = copy_to_user(buffer, buf, len);
1601 	kfree(buf);
1602 
1603 	if (bytes_not_copied)
1604 		return -EFAULT;
1605 
1606 	*ppos = len;
1607 	return len;
1608 }
1609 
1610 /**
1611  * i40e_dbg_netdev_ops_write - write into netdev_ops datum
1612  * @filp: the opened file
1613  * @buffer: where to find the user's data
1614  * @count: the length of the user's data
1615  * @ppos: file position offset
1616  **/
1617 static ssize_t i40e_dbg_netdev_ops_write(struct file *filp,
1618 					 const char __user *buffer,
1619 					 size_t count, loff_t *ppos)
1620 {
1621 	struct i40e_pf *pf = filp->private_data;
1622 	int bytes_not_copied;
1623 	struct i40e_vsi *vsi;
1624 	char *buf_tmp;
1625 	int vsi_seid;
1626 	int i, cnt;
1627 
1628 	/* don't allow partial writes */
1629 	if (*ppos != 0)
1630 		return 0;
1631 	if (count >= sizeof(i40e_dbg_netdev_ops_buf))
1632 		return -ENOSPC;
1633 
1634 	memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf));
1635 	bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf,
1636 					  buffer, count);
1637 	if (bytes_not_copied)
1638 		return -EFAULT;
1639 	i40e_dbg_netdev_ops_buf[count] = '\0';
1640 
1641 	buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n');
1642 	if (buf_tmp) {
1643 		*buf_tmp = '\0';
1644 		count = buf_tmp - i40e_dbg_netdev_ops_buf + 1;
1645 	}
1646 
1647 	if (strncmp(i40e_dbg_netdev_ops_buf, "tx_timeout", 10) == 0) {
1648 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
1649 		if (cnt != 1) {
1650 			dev_info(&pf->pdev->dev, "tx_timeout <vsi_seid>\n");
1651 			goto netdev_ops_write_done;
1652 		}
1653 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1654 		if (!vsi) {
1655 			dev_info(&pf->pdev->dev,
1656 				 "tx_timeout: VSI %d not found\n", vsi_seid);
1657 		} else if (!vsi->netdev) {
1658 			dev_info(&pf->pdev->dev, "tx_timeout: no netdev for VSI %d\n",
1659 				 vsi_seid);
1660 		} else if (test_bit(__I40E_VSI_DOWN, vsi->state)) {
1661 			dev_info(&pf->pdev->dev, "tx_timeout: VSI %d not UP\n",
1662 				 vsi_seid);
1663 		} else if (rtnl_trylock()) {
1664 			vsi->netdev->netdev_ops->ndo_tx_timeout(vsi->netdev);
1665 			rtnl_unlock();
1666 			dev_info(&pf->pdev->dev, "tx_timeout called\n");
1667 		} else {
1668 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
1669 		}
1670 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) {
1671 		int mtu;
1672 
1673 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i",
1674 			     &vsi_seid, &mtu);
1675 		if (cnt != 2) {
1676 			dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n");
1677 			goto netdev_ops_write_done;
1678 		}
1679 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1680 		if (!vsi) {
1681 			dev_info(&pf->pdev->dev,
1682 				 "change_mtu: VSI %d not found\n", vsi_seid);
1683 		} else if (!vsi->netdev) {
1684 			dev_info(&pf->pdev->dev, "change_mtu: no netdev for VSI %d\n",
1685 				 vsi_seid);
1686 		} else if (rtnl_trylock()) {
1687 			vsi->netdev->netdev_ops->ndo_change_mtu(vsi->netdev,
1688 								mtu);
1689 			rtnl_unlock();
1690 			dev_info(&pf->pdev->dev, "change_mtu called\n");
1691 		} else {
1692 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
1693 		}
1694 
1695 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) {
1696 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
1697 		if (cnt != 1) {
1698 			dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n");
1699 			goto netdev_ops_write_done;
1700 		}
1701 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1702 		if (!vsi) {
1703 			dev_info(&pf->pdev->dev,
1704 				 "set_rx_mode: VSI %d not found\n", vsi_seid);
1705 		} else if (!vsi->netdev) {
1706 			dev_info(&pf->pdev->dev, "set_rx_mode: no netdev for VSI %d\n",
1707 				 vsi_seid);
1708 		} else if (rtnl_trylock()) {
1709 			vsi->netdev->netdev_ops->ndo_set_rx_mode(vsi->netdev);
1710 			rtnl_unlock();
1711 			dev_info(&pf->pdev->dev, "set_rx_mode called\n");
1712 		} else {
1713 			dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
1714 		}
1715 
1716 	} else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) {
1717 		cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid);
1718 		if (cnt != 1) {
1719 			dev_info(&pf->pdev->dev, "napi <vsi_seid>\n");
1720 			goto netdev_ops_write_done;
1721 		}
1722 		vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1723 		if (!vsi) {
1724 			dev_info(&pf->pdev->dev, "napi: VSI %d not found\n",
1725 				 vsi_seid);
1726 		} else if (!vsi->netdev) {
1727 			dev_info(&pf->pdev->dev, "napi: no netdev for VSI %d\n",
1728 				 vsi_seid);
1729 		} else {
1730 			for (i = 0; i < vsi->num_q_vectors; i++)
1731 				napi_schedule(&vsi->q_vectors[i]->napi);
1732 			dev_info(&pf->pdev->dev, "napi called\n");
1733 		}
1734 	} else {
1735 		dev_info(&pf->pdev->dev, "unknown command '%s'\n",
1736 			 i40e_dbg_netdev_ops_buf);
1737 		dev_info(&pf->pdev->dev, "available commands\n");
1738 		dev_info(&pf->pdev->dev, "  tx_timeout <vsi_seid>\n");
1739 		dev_info(&pf->pdev->dev, "  change_mtu <vsi_seid> <mtu>\n");
1740 		dev_info(&pf->pdev->dev, "  set_rx_mode <vsi_seid>\n");
1741 		dev_info(&pf->pdev->dev, "  napi <vsi_seid>\n");
1742 	}
1743 netdev_ops_write_done:
1744 	return count;
1745 }
1746 
1747 static const struct file_operations i40e_dbg_netdev_ops_fops = {
1748 	.owner = THIS_MODULE,
1749 	.open = simple_open,
1750 	.read = i40e_dbg_netdev_ops_read,
1751 	.write = i40e_dbg_netdev_ops_write,
1752 };
1753 
1754 /**
1755  * i40e_dbg_pf_init - setup the debugfs directory for the PF
1756  * @pf: the PF that is starting up
1757  **/
1758 void i40e_dbg_pf_init(struct i40e_pf *pf)
1759 {
1760 	struct dentry *pfile;
1761 	const char *name = pci_name(pf->pdev);
1762 	const struct device *dev = &pf->pdev->dev;
1763 
1764 	pf->i40e_dbg_pf = debugfs_create_dir(name, i40e_dbg_root);
1765 	if (!pf->i40e_dbg_pf)
1766 		return;
1767 
1768 	pfile = debugfs_create_file("command", 0600, pf->i40e_dbg_pf, pf,
1769 				    &i40e_dbg_command_fops);
1770 	if (!pfile)
1771 		goto create_failed;
1772 
1773 	pfile = debugfs_create_file("netdev_ops", 0600, pf->i40e_dbg_pf, pf,
1774 				    &i40e_dbg_netdev_ops_fops);
1775 	if (!pfile)
1776 		goto create_failed;
1777 
1778 	return;
1779 
1780 create_failed:
1781 	dev_info(dev, "debugfs dir/file for %s failed\n", name);
1782 	debugfs_remove_recursive(pf->i40e_dbg_pf);
1783 }
1784 
1785 /**
1786  * i40e_dbg_pf_exit - clear out the PF's debugfs entries
1787  * @pf: the PF that is stopping
1788  **/
1789 void i40e_dbg_pf_exit(struct i40e_pf *pf)
1790 {
1791 	debugfs_remove_recursive(pf->i40e_dbg_pf);
1792 	pf->i40e_dbg_pf = NULL;
1793 }
1794 
1795 /**
1796  * i40e_dbg_init - start up debugfs for the driver
1797  **/
1798 void i40e_dbg_init(void)
1799 {
1800 	i40e_dbg_root = debugfs_create_dir(i40e_driver_name, NULL);
1801 	if (!i40e_dbg_root)
1802 		pr_info("init of debugfs failed\n");
1803 }
1804 
1805 /**
1806  * i40e_dbg_exit - clean out the driver's debugfs entries
1807  **/
1808 void i40e_dbg_exit(void)
1809 {
1810 	debugfs_remove_recursive(i40e_dbg_root);
1811 	i40e_dbg_root = NULL;
1812 }
1813 
1814 #endif /* CONFIG_DEBUG_FS */
1815