drivers/net/ethernet/intel/i40e/i40e_debugfs.c

   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] = "";
 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 #ifdef I40E_FCOE
 701         if (vsi->type == I40E_VSI_FCOE) {
 702                 dev_info(&pf->pdev->dev,
 703                          "    fcoe_stats: rx_packets = %llu, rx_dwords = %llu, rx_dropped = %llu\n",
 704                          vsi->fcoe_stats.rx_fcoe_packets,
 705                          vsi->fcoe_stats.rx_fcoe_dwords,
 706                          vsi->fcoe_stats.rx_fcoe_dropped);
 707                 dev_info(&pf->pdev->dev,
 708                          "    fcoe_stats: tx_packets = %llu, tx_dwords = %llu\n",
 709                          vsi->fcoe_stats.tx_fcoe_packets,
 710                          vsi->fcoe_stats.tx_fcoe_dwords);
 711                 dev_info(&pf->pdev->dev,
 712                          "    fcoe_stats: bad_crc = %llu, last_error = %llu\n",
 713                          vsi->fcoe_stats.fcoe_bad_fccrc,
 714                          vsi->fcoe_stats.fcoe_last_error);
 715                 dev_info(&pf->pdev->dev, "    fcoe_stats: ddp_count = %llu\n",
 716                          vsi->fcoe_stats.fcoe_ddp_count);
 717         }
 718 #endif
 719 }
 720
 721 /**
 722  * i40e_dbg_dump_aq_desc - handles dump aq_desc write into command datum
 723  * @pf: the i40e_pf created in command write
 724  **/
 725 static void i40e_dbg_dump_aq_desc(struct i40e_pf *pf)
 726 {
 727         struct i40e_adminq_ring *ring;
 728         struct i40e_hw *hw = &pf->hw;
 729         char hdr[32];
 730         int i;
 731
 732         snprintf(hdr, sizeof(hdr), "%s %s:         ",
 733                  dev_driver_string(&pf->pdev->dev),
 734                  dev_name(&pf->pdev->dev));
 735
 736         /* first the send (command) ring, then the receive (event) ring */
 737         dev_info(&pf->pdev->dev, "AdminQ Tx Ring\n");
 738         ring = &(hw->aq.asq);
 739         for (i = 0; i < ring->count; i++) {
 740                 struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
 741                 dev_info(&pf->pdev->dev,
 742                          "   at[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
 743                          i, d->flags, d->opcode, d->datalen, d->retval,
 744                          d->cookie_high, d->cookie_low);
 745                 print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
 746                                16, 1, d->params.raw, 16, 0);
 747         }
 748
 749         dev_info(&pf->pdev->dev, "AdminQ Rx Ring\n");
 750         ring = &(hw->aq.arq);
 751         for (i = 0; i < ring->count; i++) {
 752                 struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i);
 753                 dev_info(&pf->pdev->dev,
 754                          "   ar[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n",
 755                          i, d->flags, d->opcode, d->datalen, d->retval,
 756                          d->cookie_high, d->cookie_low);
 757                 print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE,
 758                                16, 1, d->params.raw, 16, 0);
 759         }
 760 }
 761
 762 /**
 763  * i40e_dbg_dump_desc - handles dump desc write into command datum
 764  * @cnt: number of arguments that the user supplied
 765  * @vsi_seid: vsi id entered by user
 766  * @ring_id: ring id entered by user
 767  * @desc_n: descriptor number entered by user
 768  * @pf: the i40e_pf created in command write
 769  * @is_rx_ring: true if rx, false if tx
 770  **/
 771 static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n,
 772                                struct i40e_pf *pf, bool is_rx_ring)
 773 {
 774         struct i40e_tx_desc *txd;
 775         union i40e_rx_desc *rxd;
 776         struct i40e_ring *ring;
 777         struct i40e_vsi *vsi;
 778         int i;
 779
 780         vsi = i40e_dbg_find_vsi(pf, vsi_seid);
 781         if (!vsi) {
 782                 dev_info(&pf->pdev->dev, "vsi %d not found\n", vsi_seid);
 783                 return;
 784         }
 785         if (ring_id >= vsi->num_queue_pairs || ring_id < 0) {
 786                 dev_info(&pf->pdev->dev, "ring %d not found\n", ring_id);
 787                 return;
 788         }
 789         if (!vsi->tx_rings || !vsi->tx_rings[0]->desc) {
 790                 dev_info(&pf->pdev->dev,
 791                          "descriptor rings have not been allocated for vsi %d\n",
 792                          vsi_seid);
 793                 return;
 794         }
 795
 796         ring = kmemdup(is_rx_ring
 797                        ? vsi->rx_rings[ring_id] : vsi->tx_rings[ring_id],
 798                        sizeof(*ring), GFP_KERNEL);
 799         if (!ring)
 800                 return;
 801
 802         if (cnt == 2) {
 803                 dev_info(&pf->pdev->dev, "vsi = %02i %s ring = %02i\n",
 804                          vsi_seid, is_rx_ring ? "rx" : "tx", ring_id);
 805                 for (i = 0; i < ring->count; i++) {
 806                         if (!is_rx_ring) {
 807                                 txd = I40E_TX_DESC(ring, i);
 808                                 dev_info(&pf->pdev->dev,
 809                                          "   d[%03i] = 0x%016llx 0x%016llx\n",
 810                                          i, txd->buffer_addr,
 811                                          txd->cmd_type_offset_bsz);
 812                         } else if (sizeof(union i40e_rx_desc) ==
 813                                    sizeof(union i40e_16byte_rx_desc)) {
 814                                 rxd = I40E_RX_DESC(ring, i);
 815                                 dev_info(&pf->pdev->dev,
 816                                          "   d[%03i] = 0x%016llx 0x%016llx\n",
 817                                          i, rxd->read.pkt_addr,
 818                                          rxd->read.hdr_addr);
 819                         } else {
 820                                 rxd = I40E_RX_DESC(ring, i);
 821                                 dev_info(&pf->pdev->dev,
 822                                          "   d[%03i] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
 823                                          i, rxd->read.pkt_addr,
 824                                          rxd->read.hdr_addr,
 825                                          rxd->read.rsvd1, rxd->read.rsvd2);
 826                         }
 827                 }
 828         } else if (cnt == 3) {
 829                 if (desc_n >= ring->count || desc_n < 0) {
 830                         dev_info(&pf->pdev->dev,
 831                                  "descriptor %d not found\n", desc_n);
 832                         goto out;
 833                 }
 834                 if (!is_rx_ring) {
 835                         txd = I40E_TX_DESC(ring, desc_n);
 836                         dev_info(&pf->pdev->dev,
 837                                  "vsi = %02i tx ring = %02i d[%03i] = 0x%016llx 0x%016llx\n",
 838                                  vsi_seid, ring_id, desc_n,
 839                                  txd->buffer_addr, txd->cmd_type_offset_bsz);
 840                 } else if (sizeof(union i40e_rx_desc) ==
 841                            sizeof(union i40e_16byte_rx_desc)) {
 842                         rxd = I40E_RX_DESC(ring, desc_n);
 843                         dev_info(&pf->pdev->dev,
 844                                  "vsi = %02i rx ring = %02i d[%03i] = 0x%016llx 0x%016llx\n",
 845                                  vsi_seid, ring_id, desc_n,
 846                                  rxd->read.pkt_addr, rxd->read.hdr_addr);
 847                 } else {
 848                         rxd = I40E_RX_DESC(ring, desc_n);
 849                         dev_info(&pf->pdev->dev,
 850                                  "vsi = %02i rx ring = %02i d[%03i] = 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
 851                                  vsi_seid, ring_id, desc_n,
 852                                  rxd->read.pkt_addr, rxd->read.hdr_addr,
 853                                  rxd->read.rsvd1, rxd->read.rsvd2);
 854                 }
 855         } else {
 856                 dev_info(&pf->pdev->dev, "dump desc rx/tx <vsi_seid> <ring_id> [<desc_n>]\n");
 857         }
 858
 859 out:
 860         kfree(ring);
 861 }
 862
 863 /**
 864  * i40e_dbg_dump_vsi_no_seid - handles dump vsi write into command datum
 865  * @pf: the i40e_pf created in command write
 866  **/
 867 static void i40e_dbg_dump_vsi_no_seid(struct i40e_pf *pf)
 868 {
 869         int i;
 870
 871         for (i = 0; i < pf->num_alloc_vsi; i++)
 872                 if (pf->vsi[i])
 873                         dev_info(&pf->pdev->dev, "dump vsi[%d]: %d\n",
 874                                  i, pf->vsi[i]->seid);
 875 }
 876
 877 /**
 878  * i40e_dbg_dump_stats - handles dump stats write into command datum
 879  * @pf: the i40e_pf created in command write
 880  * @estats: the eth stats structure to be dumped
 881  **/
 882 static void i40e_dbg_dump_eth_stats(struct i40e_pf *pf,
 883                                     struct i40e_eth_stats *estats)
 884 {
 885         dev_info(&pf->pdev->dev, "  ethstats:\n");
 886         dev_info(&pf->pdev->dev,
 887                  "    rx_bytes = \t%lld \trx_unicast = \t\t%lld \trx_multicast = \t%lld\n",
 888                 estats->rx_bytes, estats->rx_unicast, estats->rx_multicast);
 889         dev_info(&pf->pdev->dev,
 890                  "    rx_broadcast = \t%lld \trx_discards = \t\t%lld\n",
 891                  estats->rx_broadcast, estats->rx_discards);
 892         dev_info(&pf->pdev->dev,
 893                  "    rx_unknown_protocol = \t%lld \ttx_bytes = \t%lld\n",
 894                  estats->rx_unknown_protocol, estats->tx_bytes);
 895         dev_info(&pf->pdev->dev,
 896                  "    tx_unicast = \t%lld \ttx_multicast = \t\t%lld \ttx_broadcast = \t%lld\n",
 897                  estats->tx_unicast, estats->tx_multicast, estats->tx_broadcast);
 898         dev_info(&pf->pdev->dev,
 899                  "    tx_discards = \t%lld \ttx_errors = \t\t%lld\n",
 900                  estats->tx_discards, estats->tx_errors);
 901 }
 902
 903 /**
 904  * i40e_dbg_dump_veb_seid - handles dump stats of a single given veb
 905  * @pf: the i40e_pf created in command write
 906  * @seid: the seid the user put in
 907  **/
 908 static void i40e_dbg_dump_veb_seid(struct i40e_pf *pf, int seid)
 909 {
 910         struct i40e_veb *veb;
 911
 912         if ((seid < I40E_BASE_VEB_SEID) ||
 913             (seid >= (I40E_MAX_VEB + I40E_BASE_VEB_SEID))) {
 914                 dev_info(&pf->pdev->dev, "%d: bad seid\n", seid);
 915                 return;
 916         }
 917
 918         veb = i40e_dbg_find_veb(pf, seid);
 919         if (!veb) {
 920                 dev_info(&pf->pdev->dev, "can't find veb %d\n", seid);
 921                 return;
 922         }
 923         dev_info(&pf->pdev->dev,
 924                  "veb idx=%d,%d stats_ic=%d  seid=%d uplink=%d mode=%s\n",
 925                  veb->idx, veb->veb_idx, veb->stats_idx, veb->seid,
 926                  veb->uplink_seid,
 927                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
 928         i40e_dbg_dump_eth_stats(pf, &veb->stats);
 929 }
 930
 931 /**
 932  * i40e_dbg_dump_veb_all - dumps all known veb's stats
 933  * @pf: the i40e_pf created in command write
 934  **/
 935 static void i40e_dbg_dump_veb_all(struct i40e_pf *pf)
 936 {
 937         struct i40e_veb *veb;
 938         int i;
 939
 940         for (i = 0; i < I40E_MAX_VEB; i++) {
 941                 veb = pf->veb[i];
 942                 if (veb)
 943                         i40e_dbg_dump_veb_seid(pf, veb->seid);
 944         }
 945 }
 946
 947 /**
 948  * i40e_dbg_cmd_fd_ctrl - Enable/disable FD sideband/ATR
 949  * @pf: the pf that would be altered
 950  * @flag: flag that needs enabling or disabling
 951  * @enable: Enable/disable FD SD/ATR
 952  **/
 953 static void i40e_dbg_cmd_fd_ctrl(struct i40e_pf *pf, u64 flag, bool enable)
 954 {
 955         if (enable) {
 956                 pf->flags |= flag;
 957         } else {
 958                 pf->flags &= ~flag;
 959                 pf->auto_disable_flags |= flag;
 960         }
 961         dev_info(&pf->pdev->dev, "requesting a pf reset\n");
 962         i40e_do_reset_safe(pf, (1 << __I40E_PF_RESET_REQUESTED));
 963 }
 964
 965 #define I40E_MAX_DEBUG_OUT_BUFFER (4096*4)
 966 /**
 967  * i40e_dbg_command_write - write into command datum
 968  * @filp: the opened file
 969  * @buffer: where to find the user's data
 970  * @count: the length of the user's data
 971  * @ppos: file position offset
 972  **/
 973 static ssize_t i40e_dbg_command_write(struct file *filp,
 974                                       const char __user *buffer,
 975                                       size_t count, loff_t *ppos)
 976 {
 977         struct i40e_pf *pf = filp->private_data;
 978         char *cmd_buf, *cmd_buf_tmp;
 979         int bytes_not_copied;
 980         struct i40e_vsi *vsi;
 981         int vsi_seid;
 982         int veb_seid;
 983         int cnt;
 984
 985         /* don't allow partial writes */
 986         if (*ppos != 0)
 987                 return 0;
 988
 989         cmd_buf = kzalloc(count + 1, GFP_KERNEL);
 990         if (!cmd_buf)
 991                 return count;
 992         bytes_not_copied = copy_from_user(cmd_buf, buffer, count);
 993         if (bytes_not_copied < 0) {
 994                 kfree(cmd_buf);
 995                 return bytes_not_copied;
 996         }
 997         if (bytes_not_copied > 0)
 998                 count -= bytes_not_copied;
 999         cmd_buf[count] = '\0';
1000
1001         cmd_buf_tmp = strchr(cmd_buf, '\n');
1002         if (cmd_buf_tmp) {
1003                 *cmd_buf_tmp = '\0';
1004                 count = cmd_buf_tmp - cmd_buf + 1;
1005         }
1006
1007         if (strncmp(cmd_buf, "add vsi", 7) == 0) {
1008                 vsi_seid = -1;
1009                 cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid);
1010                 if (cnt == 0) {
1011                         /* default to PF VSI */
1012                         vsi_seid = pf->vsi[pf->lan_vsi]->seid;
1013                 } else if (vsi_seid < 0) {
1014                         dev_info(&pf->pdev->dev, "add VSI %d: bad vsi seid\n",
1015                                  vsi_seid);
1016                         goto command_write_done;
1017                 }
1018
1019                 vsi = i40e_vsi_setup(pf, I40E_VSI_VMDQ2, vsi_seid, 0);
1020                 if (vsi)
1021                         dev_info(&pf->pdev->dev, "added VSI %d to relay %d\n",
1022                                  vsi->seid, vsi->uplink_seid);
1023                 else
1024                         dev_info(&pf->pdev->dev, "'%s' failed\n", cmd_buf);
1025
1026         } else if (strncmp(cmd_buf, "del vsi", 7) == 0) {
1027                 sscanf(&cmd_buf[7], "%i", &vsi_seid);
1028                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1029                 if (!vsi) {
1030                         dev_info(&pf->pdev->dev, "del VSI %d: seid not found\n",
1031                                  vsi_seid);
1032                         goto command_write_done;
1033                 }
1034
1035                 dev_info(&pf->pdev->dev, "deleting VSI %d\n", vsi_seid);
1036                 i40e_vsi_release(vsi);
1037
1038         } else if (strncmp(cmd_buf, "add relay", 9) == 0) {
1039                 struct i40e_veb *veb;
1040                 int uplink_seid, i;
1041
1042                 cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid);
1043                 if (cnt != 2) {
1044                         dev_info(&pf->pdev->dev,
1045                                  "add relay: bad command string, cnt=%d\n",
1046                                  cnt);
1047                         goto command_write_done;
1048                 } else if (uplink_seid < 0) {
1049                         dev_info(&pf->pdev->dev,
1050                                  "add relay %d: bad uplink seid\n",
1051                                  uplink_seid);
1052                         goto command_write_done;
1053                 }
1054
1055                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1056                 if (!vsi) {
1057                         dev_info(&pf->pdev->dev,
1058                                  "add relay: VSI %d not found\n", vsi_seid);
1059                         goto command_write_done;
1060                 }
1061
1062                 for (i = 0; i < I40E_MAX_VEB; i++)
1063                         if (pf->veb[i] && pf->veb[i]->seid == uplink_seid)
1064                                 break;
1065                 if (i >= I40E_MAX_VEB && uplink_seid != 0 &&
1066                     uplink_seid != pf->mac_seid) {
1067                         dev_info(&pf->pdev->dev,
1068                                  "add relay: relay uplink %d not found\n",
1069                                  uplink_seid);
1070                         goto command_write_done;
1071                 }
1072
1073                 veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid,
1074                                      vsi->tc_config.enabled_tc);
1075                 if (veb)
1076                         dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid);
1077                 else
1078                         dev_info(&pf->pdev->dev, "add relay failed\n");
1079
1080         } else if (strncmp(cmd_buf, "del relay", 9) == 0) {
1081                 int i;
1082                 cnt = sscanf(&cmd_buf[9], "%i", &veb_seid);
1083                 if (cnt != 1) {
1084                         dev_info(&pf->pdev->dev,
1085                                  "del relay: bad command string, cnt=%d\n",
1086                                  cnt);
1087                         goto command_write_done;
1088                 } else if (veb_seid < 0) {
1089                         dev_info(&pf->pdev->dev,
1090                                  "del relay %d: bad relay seid\n", veb_seid);
1091                         goto command_write_done;
1092                 }
1093
1094                 /* find the veb */
1095                 for (i = 0; i < I40E_MAX_VEB; i++)
1096                         if (pf->veb[i] && pf->veb[i]->seid == veb_seid)
1097                                 break;
1098                 if (i >= I40E_MAX_VEB) {
1099                         dev_info(&pf->pdev->dev,
1100                                  "del relay: relay %d not found\n", veb_seid);
1101                         goto command_write_done;
1102                 }
1103
1104                 dev_info(&pf->pdev->dev, "deleting relay %d\n", veb_seid);
1105                 i40e_veb_release(pf->veb[i]);
1106
1107         } else if (strncmp(cmd_buf, "add macaddr", 11) == 0) {
1108                 struct i40e_mac_filter *f;
1109                 int vlan = 0;
1110                 u8 ma[6];
1111                 int ret;
1112
1113                 cnt = sscanf(&cmd_buf[11],
1114                              "%i %hhx:%hhx:%hhx:%hhx:%hhx:%hhx %i",
1115                              &vsi_seid,
1116                              &ma[0], &ma[1], &ma[2], &ma[3], &ma[4], &ma[5],
1117                              &vlan);
1118                 if (cnt == 7) {
1119                         vlan = 0;
1120                 } else if (cnt != 8) {
1121                         dev_info(&pf->pdev->dev,
1122                                  "add macaddr: bad command string, cnt=%d\n",
1123                                  cnt);
1124                         goto command_write_done;
1125                 }
1126
1127                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1128                 if (!vsi) {
1129                         dev_info(&pf->pdev->dev,
1130                                  "add macaddr: VSI %d not found\n", vsi_seid);
1131                         goto command_write_done;
1132                 }
1133
1134                 f = i40e_add_filter(vsi, ma, vlan, false, false);
1135                 ret = i40e_sync_vsi_filters(vsi);
1136                 if (f && !ret)
1137                         dev_info(&pf->pdev->dev,
1138                                  "add macaddr: %pM vlan=%d added to VSI %d\n",
1139                                  ma, vlan, vsi_seid);
1140                 else
1141                         dev_info(&pf->pdev->dev,
1142                                  "add macaddr: %pM vlan=%d to VSI %d failed, f=%p ret=%d\n",
1143                                  ma, vlan, vsi_seid, f, ret);
1144
1145         } else if (strncmp(cmd_buf, "del macaddr", 11) == 0) {
1146                 int vlan = 0;
1147                 u8 ma[6];
1148                 int ret;
1149
1150                 cnt = sscanf(&cmd_buf[11],
1151                              "%i %hhx:%hhx:%hhx:%hhx:%hhx:%hhx %i",
1152                              &vsi_seid,
1153                              &ma[0], &ma[1], &ma[2], &ma[3], &ma[4], &ma[5],
1154                              &vlan);
1155                 if (cnt == 7) {
1156                         vlan = 0;
1157                 } else if (cnt != 8) {
1158                         dev_info(&pf->pdev->dev,
1159                                  "del macaddr: bad command string, cnt=%d\n",
1160                                  cnt);
1161                         goto command_write_done;
1162                 }
1163
1164                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1165                 if (!vsi) {
1166                         dev_info(&pf->pdev->dev,
1167                                  "del macaddr: VSI %d not found\n", vsi_seid);
1168                         goto command_write_done;
1169                 }
1170
1171                 i40e_del_filter(vsi, ma, vlan, false, false);
1172                 ret = i40e_sync_vsi_filters(vsi);
1173                 if (!ret)
1174                         dev_info(&pf->pdev->dev,
1175                                  "del macaddr: %pM vlan=%d removed from VSI %d\n",
1176                                  ma, vlan, vsi_seid);
1177                 else
1178                         dev_info(&pf->pdev->dev,
1179                                  "del macaddr: %pM vlan=%d from VSI %d failed, ret=%d\n",
1180                                  ma, vlan, vsi_seid, ret);
1181
1182         } else if (strncmp(cmd_buf, "add pvid", 8) == 0) {
1183                 i40e_status ret;
1184                 u16 vid;
1185                 unsigned int v;
1186
1187                 cnt = sscanf(&cmd_buf[8], "%i %u", &vsi_seid, &v);
1188                 if (cnt != 2) {
1189                         dev_info(&pf->pdev->dev,
1190                                  "add pvid: bad command string, cnt=%d\n", cnt);
1191                         goto command_write_done;
1192                 }
1193
1194                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1195                 if (!vsi) {
1196                         dev_info(&pf->pdev->dev, "add pvid: VSI %d not found\n",
1197                                  vsi_seid);
1198                         goto command_write_done;
1199                 }
1200
1201                 vid = v;
1202                 ret = i40e_vsi_add_pvid(vsi, vid);
1203                 if (!ret)
1204                         dev_info(&pf->pdev->dev,
1205                                  "add pvid: %d added to VSI %d\n",
1206                                  vid, vsi_seid);
1207                 else
1208                         dev_info(&pf->pdev->dev,
1209                                  "add pvid: %d to VSI %d failed, ret=%d\n",
1210                                  vid, vsi_seid, ret);
1211
1212         } else if (strncmp(cmd_buf, "del pvid", 8) == 0) {
1213
1214                 cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1215                 if (cnt != 1) {
1216                         dev_info(&pf->pdev->dev,
1217                                  "del pvid: bad command string, cnt=%d\n",
1218                                  cnt);
1219                         goto command_write_done;
1220                 }
1221
1222                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1223                 if (!vsi) {
1224                         dev_info(&pf->pdev->dev,
1225                                  "del pvid: VSI %d not found\n", vsi_seid);
1226                         goto command_write_done;
1227                 }
1228
1229                 i40e_vsi_remove_pvid(vsi);
1230                 dev_info(&pf->pdev->dev,
1231                          "del pvid: removed from VSI %d\n", vsi_seid);
1232
1233         } else if (strncmp(cmd_buf, "dump", 4) == 0) {
1234                 if (strncmp(&cmd_buf[5], "switch", 6) == 0) {
1235                         i40e_fetch_switch_configuration(pf, true);
1236                 } else if (strncmp(&cmd_buf[5], "vsi", 3) == 0) {
1237                         cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1238                         if (cnt > 0)
1239                                 i40e_dbg_dump_vsi_seid(pf, vsi_seid);
1240                         else
1241                                 i40e_dbg_dump_vsi_no_seid(pf);
1242                 } else if (strncmp(&cmd_buf[5], "veb", 3) == 0) {
1243                         cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid);
1244                         if (cnt > 0)
1245                                 i40e_dbg_dump_veb_seid(pf, vsi_seid);
1246                         else
1247                                 i40e_dbg_dump_veb_all(pf);
1248                 } else if (strncmp(&cmd_buf[5], "desc", 4) == 0) {
1249                         int ring_id, desc_n;
1250                         if (strncmp(&cmd_buf[10], "rx", 2) == 0) {
1251                                 cnt = sscanf(&cmd_buf[12], "%i %i %i",
1252                                              &vsi_seid, &ring_id, &desc_n);
1253                                 i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
1254                                                    desc_n, pf, true);
1255                         } else if (strncmp(&cmd_buf[10], "tx", 2)
1256                                         == 0) {
1257                                 cnt = sscanf(&cmd_buf[12], "%i %i %i",
1258                                              &vsi_seid, &ring_id, &desc_n);
1259                                 i40e_dbg_dump_desc(cnt, vsi_seid, ring_id,
1260                                                    desc_n, pf, false);
1261                         } else if (strncmp(&cmd_buf[10], "aq", 2) == 0) {
1262                                 i40e_dbg_dump_aq_desc(pf);
1263                         } else {
1264                                 dev_info(&pf->pdev->dev,
1265                                          "dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
1266                                 dev_info(&pf->pdev->dev,
1267                                          "dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
1268                                 dev_info(&pf->pdev->dev, "dump desc aq\n");
1269                         }
1270                 } else if (strncmp(&cmd_buf[5], "reset stats", 11) == 0) {
1271                         dev_info(&pf->pdev->dev,
1272                                  "core reset count: %d\n", pf->corer_count);
1273                         dev_info(&pf->pdev->dev,
1274                                  "global reset count: %d\n", pf->globr_count);
1275                         dev_info(&pf->pdev->dev,
1276                                  "emp reset count: %d\n", pf->empr_count);
1277                         dev_info(&pf->pdev->dev,
1278                                  "pf reset count: %d\n", pf->pfr_count);
1279                         dev_info(&pf->pdev->dev,
1280                                  "pf tx sluggish count: %d\n",
1281                                  pf->tx_sluggish_count);
1282                 } else if (strncmp(&cmd_buf[5], "port", 4) == 0) {
1283                         struct i40e_aqc_query_port_ets_config_resp *bw_data;
1284                         struct i40e_dcbx_config *cfg =
1285                                                 &pf->hw.local_dcbx_config;
1286                         struct i40e_dcbx_config *r_cfg =
1287                                                 &pf->hw.remote_dcbx_config;
1288                         int i, ret;
1289
1290                         bw_data = kzalloc(sizeof(
1291                                     struct i40e_aqc_query_port_ets_config_resp),
1292                                           GFP_KERNEL);
1293                         if (!bw_data) {
1294                                 ret = -ENOMEM;
1295                                 goto command_write_done;
1296                         }
1297
1298                         ret = i40e_aq_query_port_ets_config(&pf->hw,
1299                                                             pf->mac_seid,
1300                                                             bw_data, NULL);
1301                         if (ret) {
1302                                 dev_info(&pf->pdev->dev,
1303                                          "Query Port ETS Config AQ command failed =0x%x\n",
1304                                          pf->hw.aq.asq_last_status);
1305                                 kfree(bw_data);
1306                                 bw_data = NULL;
1307                                 goto command_write_done;
1308                         }
1309                         dev_info(&pf->pdev->dev,
1310                                  "port bw: tc_valid=0x%x tc_strict_prio=0x%x, tc_bw_max=0x%04x,0x%04x\n",
1311                                  bw_data->tc_valid_bits,
1312                                  bw_data->tc_strict_priority_bits,
1313                                  le16_to_cpu(bw_data->tc_bw_max[0]),
1314                                  le16_to_cpu(bw_data->tc_bw_max[1]));
1315                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1316                                 dev_info(&pf->pdev->dev, "port bw: tc_bw_share=%d tc_bw_limit=%d\n",
1317                                          bw_data->tc_bw_share_credits[i],
1318                                          le16_to_cpu(bw_data->tc_bw_limits[i]));
1319                         }
1320
1321                         kfree(bw_data);
1322                         bw_data = NULL;
1323
1324                         dev_info(&pf->pdev->dev,
1325                                  "port dcbx_mode=%d\n", cfg->dcbx_mode);
1326                         dev_info(&pf->pdev->dev,
1327                                  "port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1328                                  cfg->etscfg.willing, cfg->etscfg.cbs,
1329                                  cfg->etscfg.maxtcs);
1330                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1331                                 dev_info(&pf->pdev->dev, "port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1332                                          i, cfg->etscfg.prioritytable[i],
1333                                          cfg->etscfg.tcbwtable[i],
1334                                          cfg->etscfg.tsatable[i]);
1335                         }
1336                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1337                                 dev_info(&pf->pdev->dev, "port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1338                                          i, cfg->etsrec.prioritytable[i],
1339                                          cfg->etsrec.tcbwtable[i],
1340                                          cfg->etsrec.tsatable[i]);
1341                         }
1342                         dev_info(&pf->pdev->dev,
1343                                  "port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1344                                  cfg->pfc.willing, cfg->pfc.mbc,
1345                                  cfg->pfc.pfccap, cfg->pfc.pfcenable);
1346                         dev_info(&pf->pdev->dev,
1347                                  "port app_table: num_apps=%d\n", cfg->numapps);
1348                         for (i = 0; i < cfg->numapps; i++) {
1349                                 dev_info(&pf->pdev->dev, "port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1350                                          i, cfg->app[i].priority,
1351                                          cfg->app[i].selector,
1352                                          cfg->app[i].protocolid);
1353                         }
1354                         /* Peer TLV DCBX data */
1355                         dev_info(&pf->pdev->dev,
1356                                  "remote port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n",
1357                                  r_cfg->etscfg.willing,
1358                                  r_cfg->etscfg.cbs, r_cfg->etscfg.maxtcs);
1359                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1360                                 dev_info(&pf->pdev->dev, "remote port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1361                                          i, r_cfg->etscfg.prioritytable[i],
1362                                          r_cfg->etscfg.tcbwtable[i],
1363                                          r_cfg->etscfg.tsatable[i]);
1364                         }
1365                         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1366                                 dev_info(&pf->pdev->dev, "remote port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n",
1367                                          i, r_cfg->etsrec.prioritytable[i],
1368                                          r_cfg->etsrec.tcbwtable[i],
1369                                          r_cfg->etsrec.tsatable[i]);
1370                         }
1371                         dev_info(&pf->pdev->dev,
1372                                  "remote port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n",
1373                                  r_cfg->pfc.willing,
1374                                  r_cfg->pfc.mbc,
1375                                  r_cfg->pfc.pfccap,
1376                                  r_cfg->pfc.pfcenable);
1377                         dev_info(&pf->pdev->dev,
1378                                  "remote port app_table: num_apps=%d\n",
1379                                  r_cfg->numapps);
1380                         for (i = 0; i < r_cfg->numapps; i++) {
1381                                 dev_info(&pf->pdev->dev, "remote port app_table: %d prio=%d selector=%d protocol=0x%x\n",
1382                                          i, r_cfg->app[i].priority,
1383                                          r_cfg->app[i].selector,
1384                                          r_cfg->app[i].protocolid);
1385                         }
1386                 } else {
1387                         dev_info(&pf->pdev->dev,
1388                                  "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>],\n");
1389                         dev_info(&pf->pdev->dev, "dump switch\n");
1390                         dev_info(&pf->pdev->dev, "dump vsi [seid]\n");
1391                         dev_info(&pf->pdev->dev, "dump reset stats\n");
1392                         dev_info(&pf->pdev->dev, "dump port\n");
1393                         dev_info(&pf->pdev->dev,
1394                                  "dump debug fwdata <cluster_id> <table_id> <index>\n");
1395                 }
1396
1397         } else if (strncmp(cmd_buf, "msg_enable", 10) == 0) {
1398                 u32 level;
1399                 cnt = sscanf(&cmd_buf[10], "%i", &level);
1400                 if (cnt) {
1401                         if (I40E_DEBUG_USER & level) {
1402                                 pf->hw.debug_mask = level;
1403                                 dev_info(&pf->pdev->dev,
1404                                          "set hw.debug_mask = 0x%08x\n",
1405                                          pf->hw.debug_mask);
1406                         }
1407                         pf->msg_enable = level;
1408                         dev_info(&pf->pdev->dev, "set msg_enable = 0x%08x\n",
1409                                  pf->msg_enable);
1410                 } else {
1411                         dev_info(&pf->pdev->dev, "msg_enable = 0x%08x\n",
1412                                  pf->msg_enable);
1413                 }
1414         } else if (strncmp(cmd_buf, "pfr", 3) == 0) {
1415                 dev_info(&pf->pdev->dev, "debugfs: forcing PFR\n");
1416                 i40e_do_reset_safe(pf, (1 << __I40E_PF_RESET_REQUESTED));
1417
1418         } else if (strncmp(cmd_buf, "corer", 5) == 0) {
1419                 dev_info(&pf->pdev->dev, "debugfs: forcing CoreR\n");
1420                 i40e_do_reset_safe(pf, (1 << __I40E_CORE_RESET_REQUESTED));
1421
1422         } else if (strncmp(cmd_buf, "globr", 5) == 0) {
1423                 dev_info(&pf->pdev->dev, "debugfs: forcing GlobR\n");
1424                 i40e_do_reset_safe(pf, (1 << __I40E_GLOBAL_RESET_REQUESTED));
1425
1426         } else if (strncmp(cmd_buf, "empr", 4) == 0) {
1427                 dev_info(&pf->pdev->dev, "debugfs: forcing EMPR\n");
1428                 i40e_do_reset_safe(pf, (1 << __I40E_EMP_RESET_REQUESTED));
1429
1430         } else if (strncmp(cmd_buf, "read", 4) == 0) {
1431                 u32 address;
1432                 u32 value;
1433                 cnt = sscanf(&cmd_buf[4], "%i", &address);
1434                 if (cnt != 1) {
1435                         dev_info(&pf->pdev->dev, "read <reg>\n");
1436                         goto command_write_done;
1437                 }
1438
1439                 /* check the range on address */
1440                 if (address >= I40E_MAX_REGISTER) {
1441                         dev_info(&pf->pdev->dev, "read reg address 0x%08x too large\n",
1442                                  address);
1443                         goto command_write_done;
1444                 }
1445
1446                 value = rd32(&pf->hw, address);
1447                 dev_info(&pf->pdev->dev, "read: 0x%08x = 0x%08x\n",
1448                          address, value);
1449
1450         } else if (strncmp(cmd_buf, "write", 5) == 0) {
1451                 u32 address, value;
1452                 cnt = sscanf(&cmd_buf[5], "%i %i", &address, &value);
1453                 if (cnt != 2) {
1454                         dev_info(&pf->pdev->dev, "write <reg> <value>\n");
1455                         goto command_write_done;
1456                 }
1457
1458                 /* check the range on address */
1459                 if (address >= I40E_MAX_REGISTER) {
1460                         dev_info(&pf->pdev->dev, "write reg address 0x%08x too large\n",
1461                                  address);
1462                         goto command_write_done;
1463                 }
1464                 wr32(&pf->hw, address, value);
1465                 value = rd32(&pf->hw, address);
1466                 dev_info(&pf->pdev->dev, "write: 0x%08x = 0x%08x\n",
1467                          address, value);
1468         } else if (strncmp(cmd_buf, "clear_stats", 11) == 0) {
1469                 if (strncmp(&cmd_buf[12], "vsi", 3) == 0) {
1470                         cnt = sscanf(&cmd_buf[15], "%i", &vsi_seid);
1471                         if (cnt == 0) {
1472                                 int i;
1473                                 for (i = 0; i < pf->num_alloc_vsi; i++)
1474                                         i40e_vsi_reset_stats(pf->vsi[i]);
1475                                 dev_info(&pf->pdev->dev, "vsi clear stats called for all vsi's\n");
1476                         } else if (cnt == 1) {
1477                                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
1478                                 if (!vsi) {
1479                                         dev_info(&pf->pdev->dev,
1480                                                  "clear_stats vsi: bad vsi %d\n",
1481                                                  vsi_seid);
1482                                         goto command_write_done;
1483                                 }
1484                                 i40e_vsi_reset_stats(vsi);
1485                                 dev_info(&pf->pdev->dev,
1486                                          "vsi clear stats called for vsi %d\n",
1487                                          vsi_seid);
1488                         } else {
1489                                 dev_info(&pf->pdev->dev, "clear_stats vsi [seid]\n");
1490                         }
1491                 } else if (strncmp(&cmd_buf[12], "port", 4) == 0) {
1492                         if (pf->hw.partition_id == 1) {
1493                                 i40e_pf_reset_stats(pf);
1494                                 dev_info(&pf->pdev->dev, "port stats cleared\n");
1495                         } else {
1496                                 dev_info(&pf->pdev->dev, "clear port stats not allowed on this port partition\n");
1497                         }
1498                 } else {
1499                         dev_info(&pf->pdev->dev, "clear_stats vsi [seid] or clear_stats port\n");
1500                 }
1501         } else if (strncmp(cmd_buf, "send aq_cmd", 11) == 0) {
1502                 struct i40e_aq_desc *desc;
1503                 i40e_status ret;
1504
1505                 desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1506                 if (!desc)
1507                         goto command_write_done;
1508                 cnt = sscanf(&cmd_buf[11],
1509                              "%hi %hi %hi %hi %i %i %i %i %i %i",
1510                              &desc->flags,
1511                              &desc->opcode, &desc->datalen, &desc->retval,
1512                              &desc->cookie_high, &desc->cookie_low,
1513                              &desc->params.internal.param0,
1514                              &desc->params.internal.param1,
1515                              &desc->params.internal.param2,
1516                              &desc->params.internal.param3);
1517                 if (cnt != 10) {
1518                         dev_info(&pf->pdev->dev,
1519                                  "send aq_cmd: bad command string, cnt=%d\n",
1520                                  cnt);
1521                         kfree(desc);
1522                         desc = NULL;
1523                         goto command_write_done;
1524                 }
1525                 ret = i40e_asq_send_command(&pf->hw, desc, NULL, 0, NULL);
1526                 if (!ret) {
1527                         dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1528                 } else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1529                         dev_info(&pf->pdev->dev,
1530                                  "AQ command send failed Opcode %x AQ Error: %d\n",
1531                                  desc->opcode, pf->hw.aq.asq_last_status);
1532                 } else {
1533                         dev_info(&pf->pdev->dev,
1534                                  "AQ command send failed Opcode %x Status: %d\n",
1535                                  desc->opcode, ret);
1536                 }
1537                 dev_info(&pf->pdev->dev,
1538                          "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1539                          desc->flags, desc->opcode, desc->datalen, desc->retval,
1540                          desc->cookie_high, desc->cookie_low,
1541                          desc->params.internal.param0,
1542                          desc->params.internal.param1,
1543                          desc->params.internal.param2,
1544                          desc->params.internal.param3);
1545                 kfree(desc);
1546                 desc = NULL;
1547         } else if (strncmp(cmd_buf, "send indirect aq_cmd", 20) == 0) {
1548                 struct i40e_aq_desc *desc;
1549                 i40e_status ret;
1550                 u16 buffer_len;
1551                 u8 *buff;
1552
1553                 desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL);
1554                 if (!desc)
1555                         goto command_write_done;
1556                 cnt = sscanf(&cmd_buf[20],
1557                              "%hi %hi %hi %hi %i %i %i %i %i %i %hi",
1558                              &desc->flags,
1559                              &desc->opcode, &desc->datalen, &desc->retval,
1560                              &desc->cookie_high, &desc->cookie_low,
1561                              &desc->params.internal.param0,
1562                              &desc->params.internal.param1,
1563                              &desc->params.internal.param2,
1564                              &desc->params.internal.param3,
1565                              &buffer_len);
1566                 if (cnt != 11) {
1567                         dev_info(&pf->pdev->dev,
1568                                  "send indirect aq_cmd: bad command string, cnt=%d\n",
1569                                  cnt);
1570                         kfree(desc);
1571                         desc = NULL;
1572                         goto command_write_done;
1573                 }
1574                 /* Just stub a buffer big enough in case user messed up */
1575                 if (buffer_len == 0)
1576                         buffer_len = 1280;
1577
1578                 buff = kzalloc(buffer_len, GFP_KERNEL);
1579                 if (!buff) {
1580                         kfree(desc);
1581                         desc = NULL;
1582                         goto command_write_done;
1583                 }
1584                 desc->flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
1585                 ret = i40e_asq_send_command(&pf->hw, desc, buff,
1586                                             buffer_len, NULL);
1587                 if (!ret) {
1588                         dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n");
1589                 } else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) {
1590                         dev_info(&pf->pdev->dev,
1591                                  "AQ command send failed Opcode %x AQ Error: %d\n",
1592                                  desc->opcode, pf->hw.aq.asq_last_status);
1593                 } else {
1594                         dev_info(&pf->pdev->dev,
1595                                  "AQ command send failed Opcode %x Status: %d\n",
1596                                  desc->opcode, ret);
1597                 }
1598                 dev_info(&pf->pdev->dev,
1599                          "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
1600                          desc->flags, desc->opcode, desc->datalen, desc->retval,
1601                          desc->cookie_high, desc->cookie_low,
1602                          desc->params.internal.param0,
1603                          desc->params.internal.param1,
1604                          desc->params.internal.param2,
1605                          desc->params.internal.param3);
1606                 print_hex_dump(KERN_INFO, "AQ buffer WB: ",
1607                                DUMP_PREFIX_OFFSET, 16, 1,
1608                                buff, buffer_len, true);
1609                 kfree(buff);
1610                 buff = NULL;
1611                 kfree(desc);
1612                 desc = NULL;
1613         } else if ((strncmp(cmd_buf, "add fd_filter", 13) == 0) ||
1614                    (strncmp(cmd_buf, "rem fd_filter", 13) == 0)) {
1615                 struct i40e_fdir_filter fd_data;
1616                 u16 packet_len, i, j = 0;
1617                 char *asc_packet;
1618                 u8 *raw_packet;
1619                 bool add = false;
1620                 int ret;
1621
1622                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1623                         goto command_write_done;
1624
1625                 if (strncmp(cmd_buf, "add", 3) == 0)
1626                         add = true;
1627
1628                 if (add && (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1629                         goto command_write_done;
1630
1631                 asc_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE,
1632                                      GFP_KERNEL);
1633                 if (!asc_packet)
1634                         goto command_write_done;
1635
1636                 raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE,
1637                                      GFP_KERNEL);
1638
1639                 if (!raw_packet) {
1640                         kfree(asc_packet);
1641                         asc_packet = NULL;
1642                         goto command_write_done;
1643                 }
1644
1645                 cnt = sscanf(&cmd_buf[13],
1646                              "%hx %2hhx %2hhx %hx %2hhx %2hhx %hx %x %hd %511s",
1647                              &fd_data.q_index,
1648                              &fd_data.flex_off, &fd_data.pctype,
1649                              &fd_data.dest_vsi, &fd_data.dest_ctl,
1650                              &fd_data.fd_status, &fd_data.cnt_index,
1651                              &fd_data.fd_id, &packet_len, asc_packet);
1652                 if (cnt != 10) {
1653                         dev_info(&pf->pdev->dev,
1654                                  "program fd_filter: bad command string, cnt=%d\n",
1655                                  cnt);
1656                         kfree(asc_packet);
1657                         asc_packet = NULL;
1658                         kfree(raw_packet);
1659                         goto command_write_done;
1660                 }
1661
1662                 /* fix packet length if user entered 0 */
1663                 if (packet_len == 0)
1664                         packet_len = I40E_FDIR_MAX_RAW_PACKET_SIZE;
1665
1666                 /* make sure to check the max as well */
1667                 packet_len = min_t(u16,
1668                                    packet_len, I40E_FDIR_MAX_RAW_PACKET_SIZE);
1669
1670                 for (i = 0; i < packet_len; i++) {
1671                         sscanf(&asc_packet[j], "%2hhx ",
1672                                &raw_packet[i]);
1673                         j += 3;
1674                 }
1675                 dev_info(&pf->pdev->dev, "FD raw packet dump\n");
1676                 print_hex_dump(KERN_INFO, "FD raw packet: ",
1677                                DUMP_PREFIX_OFFSET, 16, 1,
1678                                raw_packet, packet_len, true);
1679                 ret = i40e_program_fdir_filter(&fd_data, raw_packet, pf, add);
1680                 if (!ret) {
1681                         dev_info(&pf->pdev->dev, "Filter command send Status : Success\n");
1682                 } else {
1683                         dev_info(&pf->pdev->dev,
1684                                  "Filter command send failed %d\n", ret);
1685                 }
1686                 kfree(raw_packet);
1687                 raw_packet = NULL;
1688                 kfree(asc_packet);
1689                 asc_packet = NULL;
1690         } else if (strncmp(cmd_buf, "fd-atr off", 10) == 0) {
1691                 i40e_dbg_cmd_fd_ctrl(pf, I40E_FLAG_FD_ATR_ENABLED, false);
1692         } else if (strncmp(cmd_buf, "fd-atr on", 9) == 0) {
1693                 i40e_dbg_cmd_fd_ctrl(pf, I40E_FLAG_FD_ATR_ENABLED, true);
1694         } else if (strncmp(cmd_buf, "fd current cnt", 14) == 0) {
1695                 dev_info(&pf->pdev->dev, "FD current total filter count for this interface: %d\n",
1696                          i40e_get_current_fd_count(pf));
1697         } else if (strncmp(cmd_buf, "lldp", 4) == 0) {
1698                 if (strncmp(&cmd_buf[5], "stop", 4) == 0) {
1699                         int ret;
1700                         ret = i40e_aq_stop_lldp(&pf->hw, false, NULL);
1701                         if (ret) {
1702                                 dev_info(&pf->pdev->dev,
1703                                          "Stop LLDP AQ command failed =0x%x\n",
1704                                          pf->hw.aq.asq_last_status);
1705                                 goto command_write_done;
1706                         }
1707                         ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1708                                                 pf->hw.mac.addr,
1709                                                 I40E_ETH_P_LLDP, 0,
1710                                                 pf->vsi[pf->lan_vsi]->seid,
1711                                                 0, true, NULL, NULL);
1712                         if (ret) {
1713                                 dev_info(&pf->pdev->dev,
1714                                         "%s: Add Control Packet Filter AQ command failed =0x%x\n",
1715                                         __func__, pf->hw.aq.asq_last_status);
1716                                 goto command_write_done;
1717                         }
1718 #ifdef CONFIG_I40E_DCB
1719                         pf->dcbx_cap = DCB_CAP_DCBX_HOST |
1720                                        DCB_CAP_DCBX_VER_IEEE;
1721 #endif /* CONFIG_I40E_DCB */
1722                 } else if (strncmp(&cmd_buf[5], "start", 5) == 0) {
1723                         int ret;
1724                         ret = i40e_aq_add_rem_control_packet_filter(&pf->hw,
1725                                                 pf->hw.mac.addr,
1726                                                 I40E_ETH_P_LLDP, 0,
1727                                                 pf->vsi[pf->lan_vsi]->seid,
1728                                                 0, false, NULL, NULL);
1729                         if (ret) {
1730                                 dev_info(&pf->pdev->dev,
1731                                         "%s: Remove Control Packet Filter AQ command failed =0x%x\n",
1732                                         __func__, pf->hw.aq.asq_last_status);
1733                                 /* Continue and start FW LLDP anyways */
1734                         }
1735
1736                         ret = i40e_aq_start_lldp(&pf->hw, NULL);
1737                         if (ret) {
1738                                 dev_info(&pf->pdev->dev,
1739                                          "Start LLDP AQ command failed =0x%x\n",
1740                                          pf->hw.aq.asq_last_status);
1741                                 goto command_write_done;
1742                         }
1743 #ifdef CONFIG_I40E_DCB
1744                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
1745                                        DCB_CAP_DCBX_VER_IEEE;
1746 #endif /* CONFIG_I40E_DCB */
1747                 } else if (strncmp(&cmd_buf[5],
1748                            "get local", 9) == 0) {
1749                         u16 llen, rlen;
1750                         int ret;
1751                         u8 *buff;
1752                         buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1753                         if (!buff)
1754                                 goto command_write_done;
1755
1756                         ret = i40e_aq_get_lldp_mib(&pf->hw, 0,
1757                                                    I40E_AQ_LLDP_MIB_LOCAL,
1758                                                    buff, I40E_LLDPDU_SIZE,
1759                                                    &llen, &rlen, NULL);
1760                         if (ret) {
1761                                 dev_info(&pf->pdev->dev,
1762                                          "Get LLDP MIB (local) AQ command failed =0x%x\n",
1763                                          pf->hw.aq.asq_last_status);
1764                                 kfree(buff);
1765                                 buff = NULL;
1766                                 goto command_write_done;
1767                         }
1768                         dev_info(&pf->pdev->dev, "LLDP MIB (local)\n");
1769                         print_hex_dump(KERN_INFO, "LLDP MIB (local): ",
1770                                        DUMP_PREFIX_OFFSET, 16, 1,
1771                                        buff, I40E_LLDPDU_SIZE, true);
1772                         kfree(buff);
1773                         buff = NULL;
1774                 } else if (strncmp(&cmd_buf[5], "get remote", 10) == 0) {
1775                         u16 llen, rlen;
1776                         int ret;
1777                         u8 *buff;
1778                         buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL);
1779                         if (!buff)
1780                                 goto command_write_done;
1781
1782                         ret = i40e_aq_get_lldp_mib(&pf->hw,
1783                                         I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
1784                                         I40E_AQ_LLDP_MIB_REMOTE,
1785                                         buff, I40E_LLDPDU_SIZE,
1786                                         &llen, &rlen, NULL);
1787                         if (ret) {
1788                                 dev_info(&pf->pdev->dev,
1789                                          "Get LLDP MIB (remote) AQ command failed =0x%x\n",
1790                                          pf->hw.aq.asq_last_status);
1791                                 kfree(buff);
1792                                 buff = NULL;
1793                                 goto command_write_done;
1794                         }
1795                         dev_info(&pf->pdev->dev, "LLDP MIB (remote)\n");
1796                         print_hex_dump(KERN_INFO, "LLDP MIB (remote): ",
1797                                        DUMP_PREFIX_OFFSET, 16, 1,
1798                                        buff, I40E_LLDPDU_SIZE, true);
1799                         kfree(buff);
1800                         buff = NULL;
1801                 } else if (strncmp(&cmd_buf[5], "event on", 8) == 0) {
1802                         int ret;
1803                         ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1804                                                                 true, NULL);
1805                         if (ret) {
1806                                 dev_info(&pf->pdev->dev,
1807                                          "Config LLDP MIB Change Event (on) AQ command failed =0x%x\n",
1808                                          pf->hw.aq.asq_last_status);
1809                                 goto command_write_done;
1810                         }
1811                 } else if (strncmp(&cmd_buf[5], "event off", 9) == 0) {
1812                         int ret;
1813                         ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw,
1814                                                                 false, NULL);
1815                         if (ret) {
1816                                 dev_info(&pf->pdev->dev,
1817                                          "Config LLDP MIB Change Event (off) AQ command failed =0x%x\n",
1818                                          pf->hw.aq.asq_last_status);
1819                                 goto command_write_done;
1820                         }
1821                 }
1822         } else if (strncmp(cmd_buf, "nvm read", 8) == 0) {
1823                 u16 buffer_len, bytes;
1824                 u16 module;
1825                 u32 offset;
1826                 u16 *buff;
1827                 int ret;
1828
1829                 cnt = sscanf(&cmd_buf[8], "%hx %x %hx",
1830                              &module, &offset, &buffer_len);
1831                 if (cnt == 0) {
1832                         module = 0;
1833                         offset = 0;
1834                         buffer_len = 0;
1835                 } else if (cnt == 1) {
1836                         offset = 0;
1837                         buffer_len = 0;
1838                 } else if (cnt == 2) {
1839                         buffer_len = 0;
1840                 } else if (cnt > 3) {
1841                         dev_info(&pf->pdev->dev,
1842                                  "nvm read: bad command string, cnt=%d\n", cnt);
1843                         goto command_write_done;
1844                 }
1845
1846                 /* set the max length */
1847                 buffer_len = min_t(u16, buffer_len, I40E_MAX_AQ_BUF_SIZE/2);
1848
1849                 bytes = 2 * buffer_len;
1850
1851                 /* read at least 1k bytes, no more than 4kB */
1852                 bytes = clamp(bytes, (u16)1024, (u16)I40E_MAX_AQ_BUF_SIZE);
1853                 buff = kzalloc(bytes, GFP_KERNEL);
1854                 if (!buff)
1855                         goto command_write_done;
1856
1857                 ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
1858                 if (ret) {
1859                         dev_info(&pf->pdev->dev,
1860                                  "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1861                                  ret, pf->hw.aq.asq_last_status);
1862                         kfree(buff);
1863                         goto command_write_done;
1864                 }
1865
1866                 ret = i40e_aq_read_nvm(&pf->hw, module, (2 * offset),
1867                                        bytes, (u8 *)buff, true, NULL);
1868                 i40e_release_nvm(&pf->hw);
1869                 if (ret) {
1870                         dev_info(&pf->pdev->dev,
1871                                  "Read NVM AQ failed err=%d status=0x%x\n",
1872                                  ret, pf->hw.aq.asq_last_status);
1873                 } else {
1874                         dev_info(&pf->pdev->dev,
1875                                  "Read NVM module=0x%x offset=0x%x words=%d\n",
1876                                  module, offset, buffer_len);
1877                         if (bytes)
1878                                 print_hex_dump(KERN_INFO, "NVM Dump: ",
1879                                         DUMP_PREFIX_OFFSET, 16, 2,
1880                                         buff, bytes, true);
1881                 }
1882                 kfree(buff);
1883                 buff = NULL;
1884         } else {
1885                 dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf);
1886                 dev_info(&pf->pdev->dev, "available commands\n");
1887                 dev_info(&pf->pdev->dev, "  add vsi [relay_seid]\n");
1888                 dev_info(&pf->pdev->dev, "  del vsi [vsi_seid]\n");
1889                 dev_info(&pf->pdev->dev, "  add relay <uplink_seid> <vsi_seid>\n");
1890                 dev_info(&pf->pdev->dev, "  del relay <relay_seid>\n");
1891                 dev_info(&pf->pdev->dev, "  add macaddr <vsi_seid> <aa:bb:cc:dd:ee:ff> [vlan]\n");
1892                 dev_info(&pf->pdev->dev, "  del macaddr <vsi_seid> <aa:bb:cc:dd:ee:ff> [vlan]\n");
1893                 dev_info(&pf->pdev->dev, "  add pvid <vsi_seid> <vid>\n");
1894                 dev_info(&pf->pdev->dev, "  del pvid <vsi_seid>\n");
1895                 dev_info(&pf->pdev->dev, "  dump switch\n");
1896                 dev_info(&pf->pdev->dev, "  dump vsi [seid]\n");
1897                 dev_info(&pf->pdev->dev, "  dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n");
1898                 dev_info(&pf->pdev->dev, "  dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n");
1899                 dev_info(&pf->pdev->dev, "  dump desc aq\n");
1900                 dev_info(&pf->pdev->dev, "  dump reset stats\n");
1901                 dev_info(&pf->pdev->dev, "  msg_enable [level]\n");
1902                 dev_info(&pf->pdev->dev, "  read <reg>\n");
1903                 dev_info(&pf->pdev->dev, "  write <reg> <value>\n");
1904                 dev_info(&pf->pdev->dev, "  clear_stats vsi [seid]\n");
1905                 dev_info(&pf->pdev->dev, "  clear_stats port\n");
1906                 dev_info(&pf->pdev->dev, "  pfr\n");
1907                 dev_info(&pf->pdev->dev, "  corer\n");
1908                 dev_info(&pf->pdev->dev, "  globr\n");
1909                 dev_info(&pf->pdev->dev, "  send aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3>\n");
1910                 dev_info(&pf->pdev->dev, "  send indirect aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3> <buffer_len>\n");
1911                 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");
1912                 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");
1913                 dev_info(&pf->pdev->dev, "  fd-atr off\n");
1914                 dev_info(&pf->pdev->dev, "  fd-atr on\n");
1915                 dev_info(&pf->pdev->dev, "  fd current cnt");
1916                 dev_info(&pf->pdev->dev, "  lldp start\n");
1917                 dev_info(&pf->pdev->dev, "  lldp stop\n");
1918                 dev_info(&pf->pdev->dev, "  lldp get local\n");
1919                 dev_info(&pf->pdev->dev, "  lldp get remote\n");
1920                 dev_info(&pf->pdev->dev, "  lldp event on\n");
1921                 dev_info(&pf->pdev->dev, "  lldp event off\n");
1922                 dev_info(&pf->pdev->dev, "  nvm read [module] [word_offset] [word_count]\n");
1923         }
1924
1925 command_write_done:
1926         kfree(cmd_buf);
1927         cmd_buf = NULL;
1928         return count;
1929 }
1930
1931 static const struct file_operations i40e_dbg_command_fops = {
1932         .owner = THIS_MODULE,
1933         .open =  simple_open,
1934         .read =  i40e_dbg_command_read,
1935         .write = i40e_dbg_command_write,
1936 };
1937
1938 /**************************************************************
1939  * netdev_ops
1940  * The netdev_ops entry in debugfs is for giving the driver commands
1941  * to be executed from the netdev operations.
1942  **************************************************************/
1943 static char i40e_dbg_netdev_ops_buf[256] = "";
1944
1945 /**
1946  * i40e_dbg_netdev_ops - read for netdev_ops datum
1947  * @filp: the opened file
1948  * @buffer: where to write the data for the user to read
1949  * @count: the size of the user's buffer
1950  * @ppos: file position offset
1951  **/
1952 static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer,
1953                                         size_t count, loff_t *ppos)
1954 {
1955         struct i40e_pf *pf = filp->private_data;
1956         int bytes_not_copied;
1957         int buf_size = 256;
1958         char *buf;
1959         int len;
1960
1961         /* don't allow partal reads */
1962         if (*ppos != 0)
1963                 return 0;
1964         if (count < buf_size)
1965                 return -ENOSPC;
1966
1967         buf = kzalloc(buf_size, GFP_KERNEL);
1968         if (!buf)
1969                 return -ENOSPC;
1970
1971         len = snprintf(buf, buf_size, "%s: %s\n",
1972                        pf->vsi[pf->lan_vsi]->netdev->name,
1973                        i40e_dbg_netdev_ops_buf);
1974
1975         bytes_not_copied = copy_to_user(buffer, buf, len);
1976         kfree(buf);
1977
1978         if (bytes_not_copied < 0)
1979                 return bytes_not_copied;
1980
1981         *ppos = len;
1982         return len;
1983 }
1984
1985 /**
1986  * i40e_dbg_netdev_ops_write - write into netdev_ops datum
1987  * @filp: the opened file
1988  * @buffer: where to find the user's data
1989  * @count: the length of the user's data
1990  * @ppos: file position offset
1991  **/
1992 static ssize_t i40e_dbg_netdev_ops_write(struct file *filp,
1993                                          const char __user *buffer,
1994                                          size_t count, loff_t *ppos)
1995 {
1996         struct i40e_pf *pf = filp->private_data;
1997         int bytes_not_copied;
1998         struct i40e_vsi *vsi;
1999         char *buf_tmp;
2000         int vsi_seid;
2001         int i, cnt;
2002
2003         /* don't allow partial writes */
2004         if (*ppos != 0)
2005                 return 0;
2006         if (count >= sizeof(i40e_dbg_netdev_ops_buf))
2007                 return -ENOSPC;
2008
2009         memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf));
2010         bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf,
2011                                           buffer, count);
2012         if (bytes_not_copied < 0)
2013                 return bytes_not_copied;
2014         else if (bytes_not_copied > 0)
2015                 count -= bytes_not_copied;
2016         i40e_dbg_netdev_ops_buf[count] = '\0';
2017
2018         buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n');
2019         if (buf_tmp) {
2020                 *buf_tmp = '\0';
2021                 count = buf_tmp - i40e_dbg_netdev_ops_buf + 1;
2022         }
2023
2024         if (strncmp(i40e_dbg_netdev_ops_buf, "tx_timeout", 10) == 0) {
2025                 cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
2026                 if (cnt != 1) {
2027                         dev_info(&pf->pdev->dev, "tx_timeout <vsi_seid>\n");
2028                         goto netdev_ops_write_done;
2029                 }
2030                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2031                 if (!vsi) {
2032                         dev_info(&pf->pdev->dev,
2033                                  "tx_timeout: VSI %d not found\n", vsi_seid);
2034                 } else if (!vsi->netdev) {
2035                         dev_info(&pf->pdev->dev, "tx_timeout: no netdev for VSI %d\n",
2036                                  vsi_seid);
2037                 } else if (test_bit(__I40E_DOWN, &vsi->state)) {
2038                         dev_info(&pf->pdev->dev, "tx_timeout: VSI %d not UP\n",
2039                                  vsi_seid);
2040                 } else if (rtnl_trylock()) {
2041                         vsi->netdev->netdev_ops->ndo_tx_timeout(vsi->netdev);
2042                         rtnl_unlock();
2043                         dev_info(&pf->pdev->dev, "tx_timeout called\n");
2044                 } else {
2045                         dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2046                 }
2047         } else if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) {
2048                 int mtu;
2049                 cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i",
2050                              &vsi_seid, &mtu);
2051                 if (cnt != 2) {
2052                         dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n");
2053                         goto netdev_ops_write_done;
2054                 }
2055                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2056                 if (!vsi) {
2057                         dev_info(&pf->pdev->dev,
2058                                  "change_mtu: VSI %d not found\n", vsi_seid);
2059                 } else if (!vsi->netdev) {
2060                         dev_info(&pf->pdev->dev, "change_mtu: no netdev for VSI %d\n",
2061                                  vsi_seid);
2062                 } else if (rtnl_trylock()) {
2063                         vsi->netdev->netdev_ops->ndo_change_mtu(vsi->netdev,
2064                                                                 mtu);
2065                         rtnl_unlock();
2066                         dev_info(&pf->pdev->dev, "change_mtu called\n");
2067                 } else {
2068                         dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2069                 }
2070
2071         } else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) {
2072                 cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid);
2073                 if (cnt != 1) {
2074                         dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n");
2075                         goto netdev_ops_write_done;
2076                 }
2077                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2078                 if (!vsi) {
2079                         dev_info(&pf->pdev->dev,
2080                                  "set_rx_mode: VSI %d not found\n", vsi_seid);
2081                 } else if (!vsi->netdev) {
2082                         dev_info(&pf->pdev->dev, "set_rx_mode: no netdev for VSI %d\n",
2083                                  vsi_seid);
2084                 } else if (rtnl_trylock()) {
2085                         vsi->netdev->netdev_ops->ndo_set_rx_mode(vsi->netdev);
2086                         rtnl_unlock();
2087                         dev_info(&pf->pdev->dev, "set_rx_mode called\n");
2088                 } else {
2089                         dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n");
2090                 }
2091
2092         } else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) {
2093                 cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid);
2094                 if (cnt != 1) {
2095                         dev_info(&pf->pdev->dev, "napi <vsi_seid>\n");
2096                         goto netdev_ops_write_done;
2097                 }
2098                 vsi = i40e_dbg_find_vsi(pf, vsi_seid);
2099                 if (!vsi) {
2100                         dev_info(&pf->pdev->dev, "napi: VSI %d not found\n",
2101                                  vsi_seid);
2102                 } else if (!vsi->netdev) {
2103                         dev_info(&pf->pdev->dev, "napi: no netdev for VSI %d\n",
2104                                  vsi_seid);
2105                 } else {
2106                         for (i = 0; i < vsi->num_q_vectors; i++)
2107                                 napi_schedule(&vsi->q_vectors[i]->napi);
2108                         dev_info(&pf->pdev->dev, "napi called\n");
2109                 }
2110         } else {
2111                 dev_info(&pf->pdev->dev, "unknown command '%s'\n",
2112                          i40e_dbg_netdev_ops_buf);
2113                 dev_info(&pf->pdev->dev, "available commands\n");
2114                 dev_info(&pf->pdev->dev, "  tx_timeout <vsi_seid>\n");
2115                 dev_info(&pf->pdev->dev, "  change_mtu <vsi_seid> <mtu>\n");
2116                 dev_info(&pf->pdev->dev, "  set_rx_mode <vsi_seid>\n");
2117                 dev_info(&pf->pdev->dev, "  napi <vsi_seid>\n");
2118         }
2119 netdev_ops_write_done:
2120         return count;
2121 }
2122
2123 static const struct file_operations i40e_dbg_netdev_ops_fops = {
2124         .owner = THIS_MODULE,
2125         .open = simple_open,
2126         .read = i40e_dbg_netdev_ops_read,
2127         .write = i40e_dbg_netdev_ops_write,
2128 };
2129
2130 /**
2131  * i40e_dbg_pf_init - setup the debugfs directory for the pf
2132  * @pf: the pf that is starting up
2133  **/
2134 void i40e_dbg_pf_init(struct i40e_pf *pf)
2135 {
2136         struct dentry *pfile;
2137         const char *name = pci_name(pf->pdev);
2138         const struct device *dev = &pf->pdev->dev;
2139
2140         pf->i40e_dbg_pf = debugfs_create_dir(name, i40e_dbg_root);
2141         if (!pf->i40e_dbg_pf)
2142                 return;
2143
2144         pfile = debugfs_create_file("command", 0600, pf->i40e_dbg_pf, pf,
2145                                     &i40e_dbg_command_fops);
2146         if (!pfile)
2147                 goto create_failed;
2148
2149         pfile = debugfs_create_file("dump", 0600, pf->i40e_dbg_pf, pf,
2150                                     &i40e_dbg_dump_fops);
2151         if (!pfile)
2152                 goto create_failed;
2153
2154         pfile = debugfs_create_file("netdev_ops", 0600, pf->i40e_dbg_pf, pf,
2155                                     &i40e_dbg_netdev_ops_fops);
2156         if (!pfile)
2157                 goto create_failed;
2158
2159         return;
2160
2161 create_failed:
2162         dev_info(dev, "debugfs dir/file for %s failed\n", name);
2163         debugfs_remove_recursive(pf->i40e_dbg_pf);
2164         return;
2165 }
2166
2167 /**
2168  * i40e_dbg_pf_exit - clear out the pf's debugfs entries
2169  * @pf: the pf that is stopping
2170  **/
2171 void i40e_dbg_pf_exit(struct i40e_pf *pf)
2172 {
2173         debugfs_remove_recursive(pf->i40e_dbg_pf);
2174         pf->i40e_dbg_pf = NULL;
2175
2176         kfree(i40e_dbg_dump_buf);
2177         i40e_dbg_dump_buf = NULL;
2178 }
2179
2180 /**
2181  * i40e_dbg_init - start up debugfs for the driver
2182  **/
2183 void i40e_dbg_init(void)
2184 {
2185         i40e_dbg_root = debugfs_create_dir(i40e_driver_name, NULL);
2186         if (!i40e_dbg_root)
2187                 pr_info("init of debugfs failed\n");
2188 }
2189
2190 /**
2191  * i40e_dbg_exit - clean out the driver's debugfs entries
2192  **/
2193 void i40e_dbg_exit(void)
2194 {
2195         debugfs_remove_recursive(i40e_dbg_root);
2196         i40e_dbg_root = NULL;
2197 }
2198
2199 #endif /* CONFIG_DEBUG_FS */