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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/* ethtool support for i40e */
28
29#include "i40e.h"
30#include "i40e_diag.h"
31
32struct i40e_stats {
33 char stat_string[ETH_GSTRING_LEN];
34 int sizeof_stat;
35 int stat_offset;
36};
37
38#define I40E_STAT(_type, _name, _stat) { \
39 .stat_string = _name, \
40 .sizeof_stat = FIELD_SIZEOF(_type, _stat), \
41 .stat_offset = offsetof(_type, _stat) \
42}
43#define I40E_NETDEV_STAT(_net_stat) \
44 I40E_STAT(struct net_device_stats, #_net_stat, _net_stat)
45#define I40E_PF_STAT(_name, _stat) \
46 I40E_STAT(struct i40e_pf, _name, _stat)
47#define I40E_VSI_STAT(_name, _stat) \
48 I40E_STAT(struct i40e_vsi, _name, _stat)
49
50static const struct i40e_stats i40e_gstrings_net_stats[] = {
51 I40E_NETDEV_STAT(rx_packets),
52 I40E_NETDEV_STAT(tx_packets),
53 I40E_NETDEV_STAT(rx_bytes),
54 I40E_NETDEV_STAT(tx_bytes),
55 I40E_NETDEV_STAT(rx_errors),
56 I40E_NETDEV_STAT(tx_errors),
57 I40E_NETDEV_STAT(rx_dropped),
58 I40E_NETDEV_STAT(tx_dropped),
59 I40E_NETDEV_STAT(multicast),
60 I40E_NETDEV_STAT(collisions),
61 I40E_NETDEV_STAT(rx_length_errors),
62 I40E_NETDEV_STAT(rx_crc_errors),
63};
64
65static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
66 struct ethtool_rxnfc *cmd);
67
68/* These PF_STATs might look like duplicates of some NETDEV_STATs,
69 * but they are separate. This device supports Virtualization, and
70 * as such might have several netdevs supporting VMDq and FCoE going
71 * through a single port. The NETDEV_STATs are for individual netdevs
72 * seen at the top of the stack, and the PF_STATs are for the physical
73 * function at the bottom of the stack hosting those netdevs.
74 *
75 * The PF_STATs are appended to the netdev stats only when ethtool -S
76 * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
77 */
78static struct i40e_stats i40e_gstrings_stats[] = {
79 I40E_PF_STAT("rx_bytes", stats.eth.rx_bytes),
80 I40E_PF_STAT("tx_bytes", stats.eth.tx_bytes),
81 I40E_PF_STAT("rx_errors", stats.eth.rx_errors),
82 I40E_PF_STAT("tx_errors", stats.eth.tx_errors),
83 I40E_PF_STAT("rx_dropped", stats.eth.rx_discards),
84 I40E_PF_STAT("tx_dropped", stats.eth.tx_discards),
85 I40E_PF_STAT("tx_dropped_link_down", stats.tx_dropped_link_down),
86 I40E_PF_STAT("crc_errors", stats.crc_errors),
87 I40E_PF_STAT("illegal_bytes", stats.illegal_bytes),
88 I40E_PF_STAT("mac_local_faults", stats.mac_local_faults),
89 I40E_PF_STAT("mac_remote_faults", stats.mac_remote_faults),
90 I40E_PF_STAT("tx_timeout", tx_timeout_count),
91 I40E_PF_STAT("rx_length_errors", stats.rx_length_errors),
92 I40E_PF_STAT("link_xon_rx", stats.link_xon_rx),
93 I40E_PF_STAT("link_xoff_rx", stats.link_xoff_rx),
94 I40E_PF_STAT("link_xon_tx", stats.link_xon_tx),
95 I40E_PF_STAT("link_xoff_tx", stats.link_xoff_tx),
96 I40E_PF_STAT("rx_size_64", stats.rx_size_64),
97 I40E_PF_STAT("rx_size_127", stats.rx_size_127),
98 I40E_PF_STAT("rx_size_255", stats.rx_size_255),
99 I40E_PF_STAT("rx_size_511", stats.rx_size_511),
100 I40E_PF_STAT("rx_size_1023", stats.rx_size_1023),
101 I40E_PF_STAT("rx_size_1522", stats.rx_size_1522),
102 I40E_PF_STAT("rx_size_big", stats.rx_size_big),
103 I40E_PF_STAT("tx_size_64", stats.tx_size_64),
104 I40E_PF_STAT("tx_size_127", stats.tx_size_127),
105 I40E_PF_STAT("tx_size_255", stats.tx_size_255),
106 I40E_PF_STAT("tx_size_511", stats.tx_size_511),
107 I40E_PF_STAT("tx_size_1023", stats.tx_size_1023),
108 I40E_PF_STAT("tx_size_1522", stats.tx_size_1522),
109 I40E_PF_STAT("tx_size_big", stats.tx_size_big),
110 I40E_PF_STAT("rx_undersize", stats.rx_undersize),
111 I40E_PF_STAT("rx_fragments", stats.rx_fragments),
112 I40E_PF_STAT("rx_oversize", stats.rx_oversize),
113 I40E_PF_STAT("rx_jabber", stats.rx_jabber),
114 I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests),
115 I40E_PF_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
116 I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
117 /* LPI stats */
118 I40E_PF_STAT("tx_lpi_status", stats.tx_lpi_status),
119 I40E_PF_STAT("rx_lpi_status", stats.rx_lpi_status),
120 I40E_PF_STAT("tx_lpi_count", stats.tx_lpi_count),
121 I40E_PF_STAT("rx_lpi_count", stats.rx_lpi_count),
122};
123
124#define I40E_QUEUE_STATS_LEN(n) \
125 ((((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs + \
126 ((struct i40e_netdev_priv *)netdev_priv((n)))->vsi->num_queue_pairs) * 2)
127#define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats)
128#define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats)
129#define I40E_VSI_STATS_LEN(n) (I40E_NETDEV_STATS_LEN + \
130 I40E_QUEUE_STATS_LEN((n)))
131#define I40E_PFC_STATS_LEN ( \
132 (FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_rx) + \
133 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_rx) + \
134 FIELD_SIZEOF(struct i40e_pf, stats.priority_xoff_tx) + \
135 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_tx) + \
136 FIELD_SIZEOF(struct i40e_pf, stats.priority_xon_2_xoff)) \
137 / sizeof(u64))
138#define I40E_PF_STATS_LEN(n) (I40E_GLOBAL_STATS_LEN + \
139 I40E_PFC_STATS_LEN + \
140 I40E_VSI_STATS_LEN((n)))
141
142enum i40e_ethtool_test_id {
143 I40E_ETH_TEST_REG = 0,
144 I40E_ETH_TEST_EEPROM,
145 I40E_ETH_TEST_INTR,
146 I40E_ETH_TEST_LOOPBACK,
147 I40E_ETH_TEST_LINK,
148};
149
150static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
151 "Register test (offline)",
152 "Eeprom test (offline)",
153 "Interrupt test (offline)",
154 "Loopback test (offline)",
155 "Link test (on/offline)"
156};
157
158#define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
159
160/**
161 * i40e_get_settings - Get Link Speed and Duplex settings
162 * @netdev: network interface device structure
163 * @ecmd: ethtool command
164 *
165 * Reports speed/duplex settings based on media_type
166 **/
167static int i40e_get_settings(struct net_device *netdev,
168 struct ethtool_cmd *ecmd)
169{
170 struct i40e_netdev_priv *np = netdev_priv(netdev);
171 struct i40e_pf *pf = np->vsi->back;
172 struct i40e_hw *hw = &pf->hw;
173 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
174 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
175 u32 link_speed = hw_link_info->link_speed;
176
177 /* hardware is either in 40G mode or 10G mode
178 * NOTE: this section initializes supported and advertising
179 */
180 switch (hw_link_info->phy_type) {
181 case I40E_PHY_TYPE_40GBASE_CR4:
182 case I40E_PHY_TYPE_40GBASE_CR4_CU:
183 ecmd->supported = SUPPORTED_40000baseCR4_Full;
184 ecmd->advertising = ADVERTISED_40000baseCR4_Full;
185 break;
186 case I40E_PHY_TYPE_40GBASE_KR4:
187 ecmd->supported = SUPPORTED_40000baseKR4_Full;
188 ecmd->advertising = ADVERTISED_40000baseKR4_Full;
189 break;
190 case I40E_PHY_TYPE_40GBASE_SR4:
191 ecmd->supported = SUPPORTED_40000baseSR4_Full;
192 ecmd->advertising = ADVERTISED_40000baseSR4_Full;
193 break;
194 case I40E_PHY_TYPE_40GBASE_LR4:
195 ecmd->supported = SUPPORTED_40000baseLR4_Full;
196 ecmd->advertising = ADVERTISED_40000baseLR4_Full;
197 break;
198 case I40E_PHY_TYPE_10GBASE_KX4:
199 ecmd->supported = SUPPORTED_10000baseKX4_Full;
200 ecmd->advertising = ADVERTISED_10000baseKX4_Full;
201 break;
202 case I40E_PHY_TYPE_10GBASE_KR:
203 ecmd->supported = SUPPORTED_10000baseKR_Full;
204 ecmd->advertising = ADVERTISED_10000baseKR_Full;
205 break;
206 default:
207 if (i40e_is_40G_device(hw->device_id)) {
208 ecmd->supported = SUPPORTED_40000baseSR4_Full;
209 ecmd->advertising = ADVERTISED_40000baseSR4_Full;
210 } else {
211 ecmd->supported = SUPPORTED_10000baseT_Full;
212 ecmd->advertising = ADVERTISED_10000baseT_Full;
213 }
214 break;
215 }
216
217 ecmd->supported |= SUPPORTED_Autoneg;
218 ecmd->advertising |= ADVERTISED_Autoneg;
219 ecmd->autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
220 AUTONEG_ENABLE : AUTONEG_DISABLE);
221
222 switch (hw->phy.media_type) {
223 case I40E_MEDIA_TYPE_BACKPLANE:
224 ecmd->supported |= SUPPORTED_Backplane;
225 ecmd->advertising |= ADVERTISED_Backplane;
226 ecmd->port = PORT_NONE;
227 break;
228 case I40E_MEDIA_TYPE_BASET:
229 ecmd->supported |= SUPPORTED_TP;
230 ecmd->advertising |= ADVERTISED_TP;
231 ecmd->port = PORT_TP;
232 break;
233 case I40E_MEDIA_TYPE_DA:
234 case I40E_MEDIA_TYPE_CX4:
235 ecmd->supported |= SUPPORTED_FIBRE;
236 ecmd->advertising |= ADVERTISED_FIBRE;
237 ecmd->port = PORT_DA;
238 break;
239 case I40E_MEDIA_TYPE_FIBER:
240 ecmd->supported |= SUPPORTED_FIBRE;
241 ecmd->advertising |= ADVERTISED_FIBRE;
242 ecmd->port = PORT_FIBRE;
243 break;
244 case I40E_MEDIA_TYPE_UNKNOWN:
245 default:
246 ecmd->port = PORT_OTHER;
247 break;
248 }
249
250 ecmd->transceiver = XCVR_EXTERNAL;
251
252 if (link_up) {
253 switch (link_speed) {
254 case I40E_LINK_SPEED_40GB:
255 /* need a SPEED_40000 in ethtool.h */
256 ethtool_cmd_speed_set(ecmd, 40000);
257 break;
258 case I40E_LINK_SPEED_10GB:
259 ethtool_cmd_speed_set(ecmd, SPEED_10000);
260 break;
261 default:
262 break;
263 }
264 ecmd->duplex = DUPLEX_FULL;
265 } else {
266 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
267 ecmd->duplex = DUPLEX_UNKNOWN;
268 }
269
270 return 0;
271}
272
273/**
274 * i40e_get_pauseparam - Get Flow Control status
275 * Return tx/rx-pause status
276 **/
277static void i40e_get_pauseparam(struct net_device *netdev,
278 struct ethtool_pauseparam *pause)
279{
280 struct i40e_netdev_priv *np = netdev_priv(netdev);
281 struct i40e_pf *pf = np->vsi->back;
282 struct i40e_hw *hw = &pf->hw;
283 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
284
285 pause->autoneg =
286 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
287 AUTONEG_ENABLE : AUTONEG_DISABLE);
288
289 if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
290 pause->rx_pause = 1;
291 } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
292 pause->tx_pause = 1;
293 } else if (hw->fc.current_mode == I40E_FC_FULL) {
294 pause->rx_pause = 1;
295 pause->tx_pause = 1;
296 }
297}
298
299static u32 i40e_get_msglevel(struct net_device *netdev)
300{
301 struct i40e_netdev_priv *np = netdev_priv(netdev);
302 struct i40e_pf *pf = np->vsi->back;
303
304 return pf->msg_enable;
305}
306
307static void i40e_set_msglevel(struct net_device *netdev, u32 data)
308{
309 struct i40e_netdev_priv *np = netdev_priv(netdev);
310 struct i40e_pf *pf = np->vsi->back;
311
312 if (I40E_DEBUG_USER & data)
313 pf->hw.debug_mask = data;
314 pf->msg_enable = data;
315}
316
317static int i40e_get_regs_len(struct net_device *netdev)
318{
319 int reg_count = 0;
320 int i;
321
322 for (i = 0; i40e_reg_list[i].offset != 0; i++)
323 reg_count += i40e_reg_list[i].elements;
324
325 return reg_count * sizeof(u32);
326}
327
328static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
329 void *p)
330{
331 struct i40e_netdev_priv *np = netdev_priv(netdev);
332 struct i40e_pf *pf = np->vsi->back;
333 struct i40e_hw *hw = &pf->hw;
334 u32 *reg_buf = p;
335 int i, j, ri;
336 u32 reg;
337
338 /* Tell ethtool which driver-version-specific regs output we have.
339 *
340 * At some point, if we have ethtool doing special formatting of
341 * this data, it will rely on this version number to know how to
342 * interpret things. Hence, this needs to be updated if/when the
343 * diags register table is changed.
344 */
345 regs->version = 1;
346
347 /* loop through the diags reg table for what to print */
348 ri = 0;
349 for (i = 0; i40e_reg_list[i].offset != 0; i++) {
350 for (j = 0; j < i40e_reg_list[i].elements; j++) {
351 reg = i40e_reg_list[i].offset
352 + (j * i40e_reg_list[i].stride);
353 reg_buf[ri++] = rd32(hw, reg);
354 }
355 }
356
357}
358
359static int i40e_get_eeprom(struct net_device *netdev,
360 struct ethtool_eeprom *eeprom, u8 *bytes)
361{
362 struct i40e_netdev_priv *np = netdev_priv(netdev);
363 struct i40e_hw *hw = &np->vsi->back->hw;
364 struct i40e_pf *pf = np->vsi->back;
365 int ret_val = 0, len;
366 u8 *eeprom_buff;
367 u16 i, sectors;
368 bool last;
369#define I40E_NVM_SECTOR_SIZE 4096
370 if (eeprom->len == 0)
371 return -EINVAL;
372
373 eeprom->magic = hw->vendor_id | (hw->device_id << 16);
374
375 eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
376 if (!eeprom_buff)
377 return -ENOMEM;
378
379 ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
380 if (ret_val) {
381 dev_info(&pf->pdev->dev,
382 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
383 ret_val, hw->aq.asq_last_status);
384 goto free_buff;
385 }
386
387 sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
388 sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
389 len = I40E_NVM_SECTOR_SIZE;
390 last = false;
391 for (i = 0; i < sectors; i++) {
392 if (i == (sectors - 1)) {
393 len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
394 last = true;
395 }
396 ret_val = i40e_aq_read_nvm(hw, 0x0,
397 eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
398 len,
399 eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
400 last, NULL);
401 if (ret_val) {
402 dev_info(&pf->pdev->dev,
403 "read NVM failed err=%d status=0x%x\n",
404 ret_val, hw->aq.asq_last_status);
405 goto release_nvm;
406 }
407 }
408
409release_nvm:
410 i40e_release_nvm(hw);
411 memcpy(bytes, eeprom_buff, eeprom->len);
412free_buff:
413 kfree(eeprom_buff);
414 return ret_val;
415}
416
417static int i40e_get_eeprom_len(struct net_device *netdev)
418{
419 struct i40e_netdev_priv *np = netdev_priv(netdev);
420 struct i40e_hw *hw = &np->vsi->back->hw;
421 u32 val;
422
423 val = (rd32(hw, I40E_GLPCI_LBARCTRL)
424 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
425 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
426 /* register returns value in power of 2, 64Kbyte chunks. */
427 val = (64 * 1024) * (1 << val);
428 return val;
429}
430
431static void i40e_get_drvinfo(struct net_device *netdev,
432 struct ethtool_drvinfo *drvinfo)
433{
434 struct i40e_netdev_priv *np = netdev_priv(netdev);
435 struct i40e_vsi *vsi = np->vsi;
436 struct i40e_pf *pf = vsi->back;
437
438 strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
439 strlcpy(drvinfo->version, i40e_driver_version_str,
440 sizeof(drvinfo->version));
441 strlcpy(drvinfo->fw_version, i40e_fw_version_str(&pf->hw),
442 sizeof(drvinfo->fw_version));
443 strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
444 sizeof(drvinfo->bus_info));
445}
446
447static void i40e_get_ringparam(struct net_device *netdev,
448 struct ethtool_ringparam *ring)
449{
450 struct i40e_netdev_priv *np = netdev_priv(netdev);
451 struct i40e_pf *pf = np->vsi->back;
452 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
453
454 ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
455 ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
456 ring->rx_mini_max_pending = 0;
457 ring->rx_jumbo_max_pending = 0;
458 ring->rx_pending = vsi->rx_rings[0]->count;
459 ring->tx_pending = vsi->tx_rings[0]->count;
460 ring->rx_mini_pending = 0;
461 ring->rx_jumbo_pending = 0;
462}
463
464static int i40e_set_ringparam(struct net_device *netdev,
465 struct ethtool_ringparam *ring)
466{
467 struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
468 struct i40e_netdev_priv *np = netdev_priv(netdev);
469 struct i40e_vsi *vsi = np->vsi;
470 struct i40e_pf *pf = vsi->back;
471 u32 new_rx_count, new_tx_count;
472 int i, err = 0;
473
474 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
475 return -EINVAL;
476
477 if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
478 ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
479 ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
480 ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
481 netdev_info(netdev,
482 "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
483 ring->tx_pending, ring->rx_pending,
484 I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
485 return -EINVAL;
486 }
487
488 new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
489 new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
490
491 /* if nothing to do return success */
492 if ((new_tx_count == vsi->tx_rings[0]->count) &&
493 (new_rx_count == vsi->rx_rings[0]->count))
494 return 0;
495
496 while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
497 usleep_range(1000, 2000);
498
499 if (!netif_running(vsi->netdev)) {
500 /* simple case - set for the next time the netdev is started */
501 for (i = 0; i < vsi->num_queue_pairs; i++) {
502 vsi->tx_rings[i]->count = new_tx_count;
503 vsi->rx_rings[i]->count = new_rx_count;
504 }
505 goto done;
506 }
507
508 /* We can't just free everything and then setup again,
509 * because the ISRs in MSI-X mode get passed pointers
510 * to the Tx and Rx ring structs.
511 */
512
513 /* alloc updated Tx resources */
514 if (new_tx_count != vsi->tx_rings[0]->count) {
515 netdev_info(netdev,
516 "Changing Tx descriptor count from %d to %d.\n",
517 vsi->tx_rings[0]->count, new_tx_count);
518 tx_rings = kcalloc(vsi->alloc_queue_pairs,
519 sizeof(struct i40e_ring), GFP_KERNEL);
520 if (!tx_rings) {
521 err = -ENOMEM;
522 goto done;
523 }
524
525 for (i = 0; i < vsi->num_queue_pairs; i++) {
526 /* clone ring and setup updated count */
527 tx_rings[i] = *vsi->tx_rings[i];
528 tx_rings[i].count = new_tx_count;
529 err = i40e_setup_tx_descriptors(&tx_rings[i]);
530 if (err) {
531 while (i) {
532 i--;
533 i40e_free_tx_resources(&tx_rings[i]);
534 }
535 kfree(tx_rings);
536 tx_rings = NULL;
537
538 goto done;
539 }
540 }
541 }
542
543 /* alloc updated Rx resources */
544 if (new_rx_count != vsi->rx_rings[0]->count) {
545 netdev_info(netdev,
546 "Changing Rx descriptor count from %d to %d\n",
547 vsi->rx_rings[0]->count, new_rx_count);
548 rx_rings = kcalloc(vsi->alloc_queue_pairs,
549 sizeof(struct i40e_ring), GFP_KERNEL);
550 if (!rx_rings) {
551 err = -ENOMEM;
552 goto free_tx;
553 }
554
555 for (i = 0; i < vsi->num_queue_pairs; i++) {
556 /* clone ring and setup updated count */
557 rx_rings[i] = *vsi->rx_rings[i];
558 rx_rings[i].count = new_rx_count;
559 err = i40e_setup_rx_descriptors(&rx_rings[i]);
560 if (err) {
561 while (i) {
562 i--;
563 i40e_free_rx_resources(&rx_rings[i]);
564 }
565 kfree(rx_rings);
566 rx_rings = NULL;
567
568 goto free_tx;
569 }
570 }
571 }
572
573 /* Bring interface down, copy in the new ring info,
574 * then restore the interface
575 */
576 i40e_down(vsi);
577
578 if (tx_rings) {
579 for (i = 0; i < vsi->num_queue_pairs; i++) {
580 i40e_free_tx_resources(vsi->tx_rings[i]);
581 *vsi->tx_rings[i] = tx_rings[i];
582 }
583 kfree(tx_rings);
584 tx_rings = NULL;
585 }
586
587 if (rx_rings) {
588 for (i = 0; i < vsi->num_queue_pairs; i++) {
589 i40e_free_rx_resources(vsi->rx_rings[i]);
590 *vsi->rx_rings[i] = rx_rings[i];
591 }
592 kfree(rx_rings);
593 rx_rings = NULL;
594 }
595
596 i40e_up(vsi);
597
598free_tx:
599 /* error cleanup if the Rx allocations failed after getting Tx */
600 if (tx_rings) {
601 for (i = 0; i < vsi->num_queue_pairs; i++)
602 i40e_free_tx_resources(&tx_rings[i]);
603 kfree(tx_rings);
604 tx_rings = NULL;
605 }
606
607done:
608 clear_bit(__I40E_CONFIG_BUSY, &pf->state);
609
610 return err;
611}
612
613static int i40e_get_sset_count(struct net_device *netdev, int sset)
614{
615 struct i40e_netdev_priv *np = netdev_priv(netdev);
616 struct i40e_vsi *vsi = np->vsi;
617 struct i40e_pf *pf = vsi->back;
618
619 switch (sset) {
620 case ETH_SS_TEST:
621 return I40E_TEST_LEN;
622 case ETH_SS_STATS:
623 if (vsi == pf->vsi[pf->lan_vsi])
624 return I40E_PF_STATS_LEN(netdev);
625 else
626 return I40E_VSI_STATS_LEN(netdev);
627 default:
628 return -EOPNOTSUPP;
629 }
630}
631
632static void i40e_get_ethtool_stats(struct net_device *netdev,
633 struct ethtool_stats *stats, u64 *data)
634{
635 struct i40e_netdev_priv *np = netdev_priv(netdev);
636 struct i40e_vsi *vsi = np->vsi;
637 struct i40e_pf *pf = vsi->back;
638 int i = 0;
639 char *p;
640 int j;
641 struct rtnl_link_stats64 *net_stats = i40e_get_vsi_stats_struct(vsi);
642 unsigned int start;
643
644 i40e_update_stats(vsi);
645
646 for (j = 0; j < I40E_NETDEV_STATS_LEN; j++) {
647 p = (char *)net_stats + i40e_gstrings_net_stats[j].stat_offset;
648 data[i++] = (i40e_gstrings_net_stats[j].sizeof_stat ==
649 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
650 }
651 rcu_read_lock();
652 for (j = 0; j < vsi->num_queue_pairs; j++, i += 4) {
653 struct i40e_ring *tx_ring = ACCESS_ONCE(vsi->tx_rings[j]);
654 struct i40e_ring *rx_ring;
655
656 if (!tx_ring)
657 continue;
658
659 /* process Tx ring statistics */
660 do {
661 start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
662 data[i] = tx_ring->stats.packets;
663 data[i + 1] = tx_ring->stats.bytes;
664 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
665
666 /* Rx ring is the 2nd half of the queue pair */
667 rx_ring = &tx_ring[1];
668 do {
669 start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
670 data[i + 2] = rx_ring->stats.packets;
671 data[i + 3] = rx_ring->stats.bytes;
672 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
673 }
674 rcu_read_unlock();
675 if (vsi == pf->vsi[pf->lan_vsi]) {
676 for (j = 0; j < I40E_GLOBAL_STATS_LEN; j++) {
677 p = (char *)pf + i40e_gstrings_stats[j].stat_offset;
678 data[i++] = (i40e_gstrings_stats[j].sizeof_stat ==
679 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
680 }
681 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
682 data[i++] = pf->stats.priority_xon_tx[j];
683 data[i++] = pf->stats.priority_xoff_tx[j];
684 }
685 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++) {
686 data[i++] = pf->stats.priority_xon_rx[j];
687 data[i++] = pf->stats.priority_xoff_rx[j];
688 }
689 for (j = 0; j < I40E_MAX_USER_PRIORITY; j++)
690 data[i++] = pf->stats.priority_xon_2_xoff[j];
691 }
692}
693
694static void i40e_get_strings(struct net_device *netdev, u32 stringset,
695 u8 *data)
696{
697 struct i40e_netdev_priv *np = netdev_priv(netdev);
698 struct i40e_vsi *vsi = np->vsi;
699 struct i40e_pf *pf = vsi->back;
700 char *p = (char *)data;
701 int i;
702
703 switch (stringset) {
704 case ETH_SS_TEST:
705 for (i = 0; i < I40E_TEST_LEN; i++) {
706 memcpy(data, i40e_gstrings_test[i], ETH_GSTRING_LEN);
707 data += ETH_GSTRING_LEN;
708 }
709 break;
710 case ETH_SS_STATS:
711 for (i = 0; i < I40E_NETDEV_STATS_LEN; i++) {
712 snprintf(p, ETH_GSTRING_LEN, "%s",
713 i40e_gstrings_net_stats[i].stat_string);
714 p += ETH_GSTRING_LEN;
715 }
716 for (i = 0; i < vsi->num_queue_pairs; i++) {
717 snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_packets", i);
718 p += ETH_GSTRING_LEN;
719 snprintf(p, ETH_GSTRING_LEN, "tx-%u.tx_bytes", i);
720 p += ETH_GSTRING_LEN;
721 snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_packets", i);
722 p += ETH_GSTRING_LEN;
723 snprintf(p, ETH_GSTRING_LEN, "rx-%u.rx_bytes", i);
724 p += ETH_GSTRING_LEN;
725 }
726 if (vsi == pf->vsi[pf->lan_vsi]) {
727 for (i = 0; i < I40E_GLOBAL_STATS_LEN; i++) {
728 snprintf(p, ETH_GSTRING_LEN, "port.%s",
729 i40e_gstrings_stats[i].stat_string);
730 p += ETH_GSTRING_LEN;
731 }
732 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
733 snprintf(p, ETH_GSTRING_LEN,
734 "port.tx_priority_%u_xon", i);
735 p += ETH_GSTRING_LEN;
736 snprintf(p, ETH_GSTRING_LEN,
737 "port.tx_priority_%u_xoff", i);
738 p += ETH_GSTRING_LEN;
739 }
740 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
741 snprintf(p, ETH_GSTRING_LEN,
742 "port.rx_priority_%u_xon", i);
743 p += ETH_GSTRING_LEN;
744 snprintf(p, ETH_GSTRING_LEN,
745 "port.rx_priority_%u_xoff", i);
746 p += ETH_GSTRING_LEN;
747 }
748 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
749 snprintf(p, ETH_GSTRING_LEN,
750 "port.rx_priority_%u_xon_2_xoff", i);
751 p += ETH_GSTRING_LEN;
752 }
753 }
754 /* BUG_ON(p - data != I40E_STATS_LEN * ETH_GSTRING_LEN); */
755 break;
756 }
757}
758
759static int i40e_get_ts_info(struct net_device *dev,
760 struct ethtool_ts_info *info)
761{
762 struct i40e_pf *pf = i40e_netdev_to_pf(dev);
763
764 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
765 SOF_TIMESTAMPING_RX_SOFTWARE |
766 SOF_TIMESTAMPING_SOFTWARE |
767 SOF_TIMESTAMPING_TX_HARDWARE |
768 SOF_TIMESTAMPING_RX_HARDWARE |
769 SOF_TIMESTAMPING_RAW_HARDWARE;
770
771 if (pf->ptp_clock)
772 info->phc_index = ptp_clock_index(pf->ptp_clock);
773 else
774 info->phc_index = -1;
775
776 info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
777
778 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
779 (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
780 (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
781 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
782 (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
783 (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
784 (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
785 (1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
786 (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
787 (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
788 (1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
789 (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
790
791 return 0;
792}
793
794static int i40e_link_test(struct net_device *netdev, u64 *data)
795{
796 struct i40e_netdev_priv *np = netdev_priv(netdev);
797 struct i40e_pf *pf = np->vsi->back;
798
799 netif_info(pf, hw, netdev, "link test\n");
800 if (i40e_get_link_status(&pf->hw))
801 *data = 0;
802 else
803 *data = 1;
804
805 return *data;
806}
807
808static int i40e_reg_test(struct net_device *netdev, u64 *data)
809{
810 struct i40e_netdev_priv *np = netdev_priv(netdev);
811 struct i40e_pf *pf = np->vsi->back;
812
813 netif_info(pf, hw, netdev, "register test\n");
814 *data = i40e_diag_reg_test(&pf->hw);
815
816 return *data;
817}
818
819static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
820{
821 struct i40e_netdev_priv *np = netdev_priv(netdev);
822 struct i40e_pf *pf = np->vsi->back;
823
824 netif_info(pf, hw, netdev, "eeprom test\n");
825 *data = i40e_diag_eeprom_test(&pf->hw);
826
827 return *data;
828}
829
830static int i40e_intr_test(struct net_device *netdev, u64 *data)
831{
832 struct i40e_netdev_priv *np = netdev_priv(netdev);
833 struct i40e_pf *pf = np->vsi->back;
834 u16 swc_old = pf->sw_int_count;
835
836 netif_info(pf, hw, netdev, "interrupt test\n");
837 wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
838 (I40E_PFINT_DYN_CTL0_INTENA_MASK |
839 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
840 usleep_range(1000, 2000);
841 *data = (swc_old == pf->sw_int_count);
842
843 return *data;
844}
845
846static int i40e_loopback_test(struct net_device *netdev, u64 *data)
847{
848 struct i40e_netdev_priv *np = netdev_priv(netdev);
849 struct i40e_pf *pf = np->vsi->back;
850
851 netif_info(pf, hw, netdev, "loopback test not implemented\n");
852 *data = 0;
853
854 return *data;
855}
856
857static void i40e_diag_test(struct net_device *netdev,
858 struct ethtool_test *eth_test, u64 *data)
859{
860 struct i40e_netdev_priv *np = netdev_priv(netdev);
861 struct i40e_pf *pf = np->vsi->back;
862
863 if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
864 /* Offline tests */
865 netif_info(pf, drv, netdev, "offline testing starting\n");
866
867 set_bit(__I40E_TESTING, &pf->state);
868
869 /* Link test performed before hardware reset
870 * so autoneg doesn't interfere with test result
871 */
872 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
873 eth_test->flags |= ETH_TEST_FL_FAILED;
874
875 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
876 eth_test->flags |= ETH_TEST_FL_FAILED;
877
878 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
879 eth_test->flags |= ETH_TEST_FL_FAILED;
880
881 if (i40e_loopback_test(netdev, &data[I40E_ETH_TEST_LOOPBACK]))
882 eth_test->flags |= ETH_TEST_FL_FAILED;
883
884 /* run reg test last, a reset is required after it */
885 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
886 eth_test->flags |= ETH_TEST_FL_FAILED;
887
888 clear_bit(__I40E_TESTING, &pf->state);
889 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
890 } else {
891 /* Online tests */
892 netif_info(pf, drv, netdev, "online testing starting\n");
893
894 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
895 eth_test->flags |= ETH_TEST_FL_FAILED;
896
897 /* Offline only tests, not run in online; pass by default */
898 data[I40E_ETH_TEST_REG] = 0;
899 data[I40E_ETH_TEST_EEPROM] = 0;
900 data[I40E_ETH_TEST_INTR] = 0;
901 data[I40E_ETH_TEST_LOOPBACK] = 0;
902 }
903
904 netif_info(pf, drv, netdev, "testing finished\n");
905}
906
907static void i40e_get_wol(struct net_device *netdev,
908 struct ethtool_wolinfo *wol)
909{
910 struct i40e_netdev_priv *np = netdev_priv(netdev);
911 struct i40e_pf *pf = np->vsi->back;
912 struct i40e_hw *hw = &pf->hw;
913 u16 wol_nvm_bits;
914
915 /* NVM bit on means WoL disabled for the port */
916 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
917 if ((1 << hw->port) & wol_nvm_bits) {
918 wol->supported = 0;
919 wol->wolopts = 0;
920 } else {
921 wol->supported = WAKE_MAGIC;
922 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
923 }
924}
925
926static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
927{
928 struct i40e_netdev_priv *np = netdev_priv(netdev);
929 struct i40e_pf *pf = np->vsi->back;
930 struct i40e_hw *hw = &pf->hw;
931 u16 wol_nvm_bits;
932
933 /* NVM bit on means WoL disabled for the port */
934 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
935 if (((1 << hw->port) & wol_nvm_bits))
936 return -EOPNOTSUPP;
937
938 /* only magic packet is supported */
939 if (wol->wolopts && (wol->wolopts != WAKE_MAGIC))
940 return -EOPNOTSUPP;
941
942 /* is this a new value? */
943 if (pf->wol_en != !!wol->wolopts) {
944 pf->wol_en = !!wol->wolopts;
945 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
946 }
947
948 return 0;
949}
950
951static int i40e_nway_reset(struct net_device *netdev)
952{
953 /* restart autonegotiation */
954 struct i40e_netdev_priv *np = netdev_priv(netdev);
955 struct i40e_pf *pf = np->vsi->back;
956 struct i40e_hw *hw = &pf->hw;
957 i40e_status ret = 0;
958
959 ret = i40e_aq_set_link_restart_an(hw, NULL);
960 if (ret) {
961 netdev_info(netdev, "link restart failed, aq_err=%d\n",
962 pf->hw.aq.asq_last_status);
963 return -EIO;
964 }
965
966 return 0;
967}
968
969static int i40e_set_phys_id(struct net_device *netdev,
970 enum ethtool_phys_id_state state)
971{
972 struct i40e_netdev_priv *np = netdev_priv(netdev);
973 struct i40e_pf *pf = np->vsi->back;
974 struct i40e_hw *hw = &pf->hw;
975 int blink_freq = 2;
976
977 switch (state) {
978 case ETHTOOL_ID_ACTIVE:
979 pf->led_status = i40e_led_get(hw);
980 return blink_freq;
981 case ETHTOOL_ID_ON:
982 i40e_led_set(hw, 0xF, false);
983 break;
984 case ETHTOOL_ID_OFF:
985 i40e_led_set(hw, 0x0, false);
986 break;
987 case ETHTOOL_ID_INACTIVE:
988 i40e_led_set(hw, pf->led_status, false);
989 break;
990 }
991
992 return 0;
993}
994
995/* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
996 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
997 * 125us (8000 interrupts per second) == ITR(62)
998 */
999
1000static int i40e_get_coalesce(struct net_device *netdev,
1001 struct ethtool_coalesce *ec)
1002{
1003 struct i40e_netdev_priv *np = netdev_priv(netdev);
1004 struct i40e_vsi *vsi = np->vsi;
1005
1006 ec->tx_max_coalesced_frames_irq = vsi->work_limit;
1007 ec->rx_max_coalesced_frames_irq = vsi->work_limit;
1008
1009 if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
1010 ec->rx_coalesce_usecs = 1;
1011 else
1012 ec->rx_coalesce_usecs = vsi->rx_itr_setting;
1013
1014 if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
1015 ec->tx_coalesce_usecs = 1;
1016 else
1017 ec->tx_coalesce_usecs = vsi->tx_itr_setting;
1018
1019 return 0;
1020}
1021
1022static int i40e_set_coalesce(struct net_device *netdev,
1023 struct ethtool_coalesce *ec)
1024{
1025 struct i40e_netdev_priv *np = netdev_priv(netdev);
1026 struct i40e_q_vector *q_vector;
1027 struct i40e_vsi *vsi = np->vsi;
1028 struct i40e_pf *pf = vsi->back;
1029 struct i40e_hw *hw = &pf->hw;
1030 u16 vector;
1031 int i;
1032
1033 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
1034 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
1035
1036 switch (ec->rx_coalesce_usecs) {
1037 case 0:
1038 vsi->rx_itr_setting = 0;
1039 break;
1040 case 1:
1041 vsi->rx_itr_setting = (I40E_ITR_DYNAMIC |
1042 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
1043 break;
1044 default:
1045 if ((ec->rx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1046 (ec->rx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1047 return -EINVAL;
1048 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
1049 break;
1050 }
1051
1052 switch (ec->tx_coalesce_usecs) {
1053 case 0:
1054 vsi->tx_itr_setting = 0;
1055 break;
1056 case 1:
1057 vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
1058 ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
1059 break;
1060 default:
1061 if ((ec->tx_coalesce_usecs < (I40E_MIN_ITR << 1)) ||
1062 (ec->tx_coalesce_usecs > (I40E_MAX_ITR << 1)))
1063 return -EINVAL;
1064 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
1065 break;
1066 }
1067
1068 vector = vsi->base_vector;
1069 for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
1070 q_vector = vsi->q_vectors[i];
1071 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
1072 wr32(hw, I40E_PFINT_ITRN(0, vector - 1), q_vector->rx.itr);
1073 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
1074 wr32(hw, I40E_PFINT_ITRN(1, vector - 1), q_vector->tx.itr);
1075 i40e_flush(hw);
1076 }
1077
1078 return 0;
1079}
1080
1081/**
1082 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
1083 * @pf: pointer to the physical function struct
1084 * @cmd: ethtool rxnfc command
1085 *
1086 * Returns Success if the flow is supported, else Invalid Input.
1087 **/
1088static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
1089{
1090 cmd->data = 0;
1091
1092 /* Report default options for RSS on i40e */
1093 switch (cmd->flow_type) {
1094 case TCP_V4_FLOW:
1095 case UDP_V4_FLOW:
1096 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1097 /* fall through to add IP fields */
1098 case SCTP_V4_FLOW:
1099 case AH_ESP_V4_FLOW:
1100 case AH_V4_FLOW:
1101 case ESP_V4_FLOW:
1102 case IPV4_FLOW:
1103 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1104 break;
1105 case TCP_V6_FLOW:
1106 case UDP_V6_FLOW:
1107 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1108 /* fall through to add IP fields */
1109 case SCTP_V6_FLOW:
1110 case AH_ESP_V6_FLOW:
1111 case AH_V6_FLOW:
1112 case ESP_V6_FLOW:
1113 case IPV6_FLOW:
1114 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1115 break;
1116 default:
1117 return -EINVAL;
1118 }
1119
1120 return 0;
1121}
1122
1123/**
1124 * i40e_get_ethtool_fdir_all - Populates the rule count of a command
1125 * @pf: Pointer to the physical function struct
1126 * @cmd: The command to get or set Rx flow classification rules
1127 * @rule_locs: Array of used rule locations
1128 *
1129 * This function populates both the total and actual rule count of
1130 * the ethtool flow classification command
1131 *
1132 * Returns 0 on success or -EMSGSIZE if entry not found
1133 **/
1134static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
1135 struct ethtool_rxnfc *cmd,
1136 u32 *rule_locs)
1137{
1138 struct i40e_fdir_filter *rule;
1139 struct hlist_node *node2;
1140 int cnt = 0;
1141
1142 /* report total rule count */
1143 cmd->data = pf->hw.fdir_shared_filter_count +
1144 pf->fdir_pf_filter_count;
1145
1146 hlist_for_each_entry_safe(rule, node2,
1147 &pf->fdir_filter_list, fdir_node) {
1148 if (cnt == cmd->rule_cnt)
1149 return -EMSGSIZE;
1150
1151 rule_locs[cnt] = rule->fd_id;
1152 cnt++;
1153 }
1154
1155 cmd->rule_cnt = cnt;
1156
1157 return 0;
1158}
1159
1160/**
1161 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
1162 * @pf: Pointer to the physical function struct
1163 * @cmd: The command to get or set Rx flow classification rules
1164 *
1165 * This function looks up a filter based on the Rx flow classification
1166 * command and fills the flow spec info for it if found
1167 *
1168 * Returns 0 on success or -EINVAL if filter not found
1169 **/
1170static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
1171 struct ethtool_rxnfc *cmd)
1172{
1173 struct ethtool_rx_flow_spec *fsp =
1174 (struct ethtool_rx_flow_spec *)&cmd->fs;
1175 struct i40e_fdir_filter *rule = NULL;
1176 struct hlist_node *node2;
1177
1178 /* report total rule count */
1179 cmd->data = pf->hw.fdir_shared_filter_count +
1180 pf->fdir_pf_filter_count;
1181
1182 hlist_for_each_entry_safe(rule, node2,
1183 &pf->fdir_filter_list, fdir_node) {
1184 if (fsp->location <= rule->fd_id)
1185 break;
1186 }
1187
1188 if (!rule || fsp->location != rule->fd_id)
1189 return -EINVAL;
1190
1191 fsp->flow_type = rule->flow_type;
1192 fsp->h_u.tcp_ip4_spec.psrc = rule->src_port;
1193 fsp->h_u.tcp_ip4_spec.pdst = rule->dst_port;
1194 fsp->h_u.tcp_ip4_spec.ip4src = rule->src_ip[0];
1195 fsp->h_u.tcp_ip4_spec.ip4dst = rule->dst_ip[0];
1196 fsp->ring_cookie = rule->q_index;
1197
1198 return 0;
1199}
1200
1201/**
1202 * i40e_get_rxnfc - command to get RX flow classification rules
1203 * @netdev: network interface device structure
1204 * @cmd: ethtool rxnfc command
1205 *
1206 * Returns Success if the command is supported.
1207 **/
1208static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1209 u32 *rule_locs)
1210{
1211 struct i40e_netdev_priv *np = netdev_priv(netdev);
1212 struct i40e_vsi *vsi = np->vsi;
1213 struct i40e_pf *pf = vsi->back;
1214 int ret = -EOPNOTSUPP;
1215
1216 switch (cmd->cmd) {
1217 case ETHTOOL_GRXRINGS:
1218 cmd->data = vsi->alloc_queue_pairs;
1219 ret = 0;
1220 break;
1221 case ETHTOOL_GRXFH:
1222 ret = i40e_get_rss_hash_opts(pf, cmd);
1223 break;
1224 case ETHTOOL_GRXCLSRLCNT:
1225 cmd->rule_cnt = pf->fdir_pf_active_filters;
1226 ret = 0;
1227 break;
1228 case ETHTOOL_GRXCLSRULE:
1229 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
1230 break;
1231 case ETHTOOL_GRXCLSRLALL:
1232 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
1233 break;
1234 default:
1235 break;
1236 }
1237
1238 return ret;
1239}
1240
1241/**
1242 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
1243 * @pf: pointer to the physical function struct
1244 * @cmd: ethtool rxnfc command
1245 *
1246 * Returns Success if the flow input set is supported.
1247 **/
1248static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
1249{
1250 struct i40e_hw *hw = &pf->hw;
1251 u64 hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
1252 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
1253
1254 /* RSS does not support anything other than hashing
1255 * to queues on src and dst IPs and ports
1256 */
1257 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1258 RXH_L4_B_0_1 | RXH_L4_B_2_3))
1259 return -EINVAL;
1260
1261 /* We need at least the IP SRC and DEST fields for hashing */
1262 if (!(nfc->data & RXH_IP_SRC) ||
1263 !(nfc->data & RXH_IP_DST))
1264 return -EINVAL;
1265
1266 switch (nfc->flow_type) {
1267 case TCP_V4_FLOW:
1268 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1269 case 0:
1270 hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1271 break;
1272 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1273 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP);
1274 break;
1275 default:
1276 return -EINVAL;
1277 }
1278 break;
1279 case TCP_V6_FLOW:
1280 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1281 case 0:
1282 hena &= ~((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1283 break;
1284 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1285 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP);
1286 break;
1287 default:
1288 return -EINVAL;
1289 }
1290 break;
1291 case UDP_V4_FLOW:
1292 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1293 case 0:
1294 hena &=
1295 ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
1296 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1297 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1298 break;
1299 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1300 hena |=
1301 (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
1302 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
1303 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4));
1304 break;
1305 default:
1306 return -EINVAL;
1307 }
1308 break;
1309 case UDP_V6_FLOW:
1310 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1311 case 0:
1312 hena &=
1313 ~(((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
1314 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1315 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1316 break;
1317 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1318 hena |=
1319 (((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
1320 ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
1321 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6));
1322 break;
1323 default:
1324 return -EINVAL;
1325 }
1326 break;
1327 case AH_ESP_V4_FLOW:
1328 case AH_V4_FLOW:
1329 case ESP_V4_FLOW:
1330 case SCTP_V4_FLOW:
1331 if ((nfc->data & RXH_L4_B_0_1) ||
1332 (nfc->data & RXH_L4_B_2_3))
1333 return -EINVAL;
1334 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
1335 break;
1336 case AH_ESP_V6_FLOW:
1337 case AH_V6_FLOW:
1338 case ESP_V6_FLOW:
1339 case SCTP_V6_FLOW:
1340 if ((nfc->data & RXH_L4_B_0_1) ||
1341 (nfc->data & RXH_L4_B_2_3))
1342 return -EINVAL;
1343 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
1344 break;
1345 case IPV4_FLOW:
1346 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
1347 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4);
1348 break;
1349 case IPV6_FLOW:
1350 hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
1351 ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6);
1352 break;
1353 default:
1354 return -EINVAL;
1355 }
1356
1357 wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
1358 wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
1359 i40e_flush(hw);
1360
1361 return 0;
1362}
1363
1364/**
1365 * i40e_match_fdir_input_set - Match a new filter against an existing one
1366 * @rule: The filter already added
1367 * @input: The new filter to comapre against
1368 *
1369 * Returns true if the two input set match
1370 **/
1371static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
1372 struct i40e_fdir_filter *input)
1373{
1374 if ((rule->dst_ip[0] != input->dst_ip[0]) ||
1375 (rule->src_ip[0] != input->src_ip[0]) ||
1376 (rule->dst_port != input->dst_port) ||
1377 (rule->src_port != input->src_port))
1378 return false;
1379 return true;
1380}
1381
1382/**
1383 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
1384 * @vsi: Pointer to the targeted VSI
1385 * @input: The filter to update or NULL to indicate deletion
1386 * @sw_idx: Software index to the filter
1387 * @cmd: The command to get or set Rx flow classification rules
1388 *
1389 * This function updates (or deletes) a Flow Director entry from
1390 * the hlist of the corresponding PF
1391 *
1392 * Returns 0 on success
1393 **/
1394static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
1395 struct i40e_fdir_filter *input,
1396 u16 sw_idx,
1397 struct ethtool_rxnfc *cmd)
1398{
1399 struct i40e_fdir_filter *rule, *parent;
1400 struct i40e_pf *pf = vsi->back;
1401 struct hlist_node *node2;
1402 int err = -EINVAL;
1403
1404 parent = NULL;
1405 rule = NULL;
1406
1407 hlist_for_each_entry_safe(rule, node2,
1408 &pf->fdir_filter_list, fdir_node) {
1409 /* hash found, or no matching entry */
1410 if (rule->fd_id >= sw_idx)
1411 break;
1412 parent = rule;
1413 }
1414
1415 /* if there is an old rule occupying our place remove it */
1416 if (rule && (rule->fd_id == sw_idx)) {
1417 if (input && !i40e_match_fdir_input_set(rule, input))
1418 err = i40e_add_del_fdir(vsi, rule, false);
1419 else if (!input)
1420 err = i40e_add_del_fdir(vsi, rule, false);
1421 hlist_del(&rule->fdir_node);
1422 kfree(rule);
1423 pf->fdir_pf_active_filters--;
1424 }
1425
1426 /* If no input this was a delete, err should be 0 if a rule was
1427 * successfully found and removed from the list else -EINVAL
1428 */
1429 if (!input)
1430 return err;
1431
1432 /* initialize node and set software index */
1433 INIT_HLIST_NODE(&input->fdir_node);
1434
1435 /* add filter to the list */
1436 if (parent)
1437 hlist_add_after(&parent->fdir_node, &input->fdir_node);
1438 else
1439 hlist_add_head(&input->fdir_node,
1440 &pf->fdir_filter_list);
1441
1442 /* update counts */
1443 pf->fdir_pf_active_filters++;
1444
1445 return 0;
1446}
1447
1448/**
1449 * i40e_del_fdir_entry - Deletes a Flow Director filter entry
1450 * @vsi: Pointer to the targeted VSI
1451 * @cmd: The command to get or set Rx flow classification rules
1452 *
1453 * The function removes a Flow Director filter entry from the
1454 * hlist of the corresponding PF
1455 *
1456 * Returns 0 on success
1457 */
1458static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
1459 struct ethtool_rxnfc *cmd)
1460{
1461 struct ethtool_rx_flow_spec *fsp =
1462 (struct ethtool_rx_flow_spec *)&cmd->fs;
1463 struct i40e_pf *pf = vsi->back;
1464 int ret = 0;
1465
1466 ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
1467
1468 i40e_fdir_check_and_reenable(pf);
1469 return ret;
1470}
1471
1472/**
1473 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
1474 * @vsi: pointer to the targeted VSI
1475 * @cmd: command to get or set RX flow classification rules
1476 *
1477 * Add Flow Director filters for a specific flow spec based on their
1478 * protocol. Returns 0 if the filters were successfully added.
1479 **/
1480static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
1481 struct ethtool_rxnfc *cmd)
1482{
1483 struct ethtool_rx_flow_spec *fsp;
1484 struct i40e_fdir_filter *input;
1485 struct i40e_pf *pf;
1486 int ret = -EINVAL;
1487
1488 if (!vsi)
1489 return -EINVAL;
1490
1491 pf = vsi->back;
1492
1493 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
1494 return -EOPNOTSUPP;
1495
1496 if (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)
1497 return -ENOSPC;
1498
1499 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1500
1501 if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
1502 pf->hw.func_caps.fd_filters_guaranteed)) {
1503 return -EINVAL;
1504 }
1505
1506 if (fsp->ring_cookie >= vsi->num_queue_pairs)
1507 return -EINVAL;
1508
1509 input = kzalloc(sizeof(*input), GFP_KERNEL);
1510
1511 if (!input)
1512 return -ENOMEM;
1513
1514 input->fd_id = fsp->location;
1515
1516 if (fsp->ring_cookie == RX_CLS_FLOW_DISC)
1517 input->dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
1518 else
1519 input->dest_ctl =
1520 I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
1521
1522 input->q_index = fsp->ring_cookie;
1523 input->flex_off = 0;
1524 input->pctype = 0;
1525 input->dest_vsi = vsi->id;
1526 input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
1527 input->cnt_index = 0;
1528 input->flow_type = fsp->flow_type;
1529 input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
1530 input->src_port = fsp->h_u.tcp_ip4_spec.psrc;
1531 input->dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1532 input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
1533 input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
1534
1535 ret = i40e_add_del_fdir(vsi, input, true);
1536 if (ret)
1537 kfree(input);
1538 else
1539 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
1540
1541 return ret;
1542}
1543
1544/**
1545 * i40e_set_rxnfc - command to set RX flow classification rules
1546 * @netdev: network interface device structure
1547 * @cmd: ethtool rxnfc command
1548 *
1549 * Returns Success if the command is supported.
1550 **/
1551static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1552{
1553 struct i40e_netdev_priv *np = netdev_priv(netdev);
1554 struct i40e_vsi *vsi = np->vsi;
1555 struct i40e_pf *pf = vsi->back;
1556 int ret = -EOPNOTSUPP;
1557
1558 switch (cmd->cmd) {
1559 case ETHTOOL_SRXFH:
1560 ret = i40e_set_rss_hash_opt(pf, cmd);
1561 break;
1562 case ETHTOOL_SRXCLSRLINS:
1563 ret = i40e_add_fdir_ethtool(vsi, cmd);
1564 break;
1565 case ETHTOOL_SRXCLSRLDEL:
1566 ret = i40e_del_fdir_entry(vsi, cmd);
1567 break;
1568 default:
1569 break;
1570 }
1571
1572 return ret;
1573}
1574
1575/**
1576 * i40e_max_channels - get Max number of combined channels supported
1577 * @vsi: vsi pointer
1578 **/
1579static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
1580{
1581 /* TODO: This code assumes DCB and FD is disabled for now. */
1582 return vsi->alloc_queue_pairs;
1583}
1584
1585/**
1586 * i40e_get_channels - Get the current channels enabled and max supported etc.
1587 * @netdev: network interface device structure
1588 * @ch: ethtool channels structure
1589 *
1590 * We don't support separate tx and rx queues as channels. The other count
1591 * represents how many queues are being used for control. max_combined counts
1592 * how many queue pairs we can support. They may not be mapped 1 to 1 with
1593 * q_vectors since we support a lot more queue pairs than q_vectors.
1594 **/
1595static void i40e_get_channels(struct net_device *dev,
1596 struct ethtool_channels *ch)
1597{
1598 struct i40e_netdev_priv *np = netdev_priv(dev);
1599 struct i40e_vsi *vsi = np->vsi;
1600 struct i40e_pf *pf = vsi->back;
1601
1602 /* report maximum channels */
1603 ch->max_combined = i40e_max_channels(vsi);
1604
1605 /* report info for other vector */
1606 ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
1607 ch->max_other = ch->other_count;
1608
1609 /* Note: This code assumes DCB is disabled for now. */
1610 ch->combined_count = vsi->num_queue_pairs;
1611}
1612
1613/**
1614 * i40e_set_channels - Set the new channels count.
1615 * @netdev: network interface device structure
1616 * @ch: ethtool channels structure
1617 *
1618 * The new channels count may not be the same as requested by the user
1619 * since it gets rounded down to a power of 2 value.
1620 **/
1621static int i40e_set_channels(struct net_device *dev,
1622 struct ethtool_channels *ch)
1623{
1624 struct i40e_netdev_priv *np = netdev_priv(dev);
1625 unsigned int count = ch->combined_count;
1626 struct i40e_vsi *vsi = np->vsi;
1627 struct i40e_pf *pf = vsi->back;
1628 int new_count;
1629
1630 /* We do not support setting channels for any other VSI at present */
1631 if (vsi->type != I40E_VSI_MAIN)
1632 return -EINVAL;
1633
1634 /* verify they are not requesting separate vectors */
1635 if (!count || ch->rx_count || ch->tx_count)
1636 return -EINVAL;
1637
1638 /* verify other_count has not changed */
1639 if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
1640 return -EINVAL;
1641
1642 /* verify the number of channels does not exceed hardware limits */
1643 if (count > i40e_max_channels(vsi))
1644 return -EINVAL;
1645
1646 /* update feature limits from largest to smallest supported values */
1647 /* TODO: Flow director limit, DCB etc */
1648
1649 /* cap RSS limit */
1650 if (count > pf->rss_size_max)
1651 count = pf->rss_size_max;
1652
1653 /* use rss_reconfig to rebuild with new queue count and update traffic
1654 * class queue mapping
1655 */
1656 new_count = i40e_reconfig_rss_queues(pf, count);
1657 if (new_count > 0)
1658 return 0;
1659 else
1660 return -EINVAL;
1661}
1662
1663static const struct ethtool_ops i40e_ethtool_ops = {
1664 .get_settings = i40e_get_settings,
1665 .get_drvinfo = i40e_get_drvinfo,
1666 .get_regs_len = i40e_get_regs_len,
1667 .get_regs = i40e_get_regs,
1668 .nway_reset = i40e_nway_reset,
1669 .get_link = ethtool_op_get_link,
1670 .get_wol = i40e_get_wol,
1671 .set_wol = i40e_set_wol,
1672 .get_eeprom_len = i40e_get_eeprom_len,
1673 .get_eeprom = i40e_get_eeprom,
1674 .get_ringparam = i40e_get_ringparam,
1675 .set_ringparam = i40e_set_ringparam,
1676 .get_pauseparam = i40e_get_pauseparam,
1677 .get_msglevel = i40e_get_msglevel,
1678 .set_msglevel = i40e_set_msglevel,
1679 .get_rxnfc = i40e_get_rxnfc,
1680 .set_rxnfc = i40e_set_rxnfc,
1681 .self_test = i40e_diag_test,
1682 .get_strings = i40e_get_strings,
1683 .set_phys_id = i40e_set_phys_id,
1684 .get_sset_count = i40e_get_sset_count,
1685 .get_ethtool_stats = i40e_get_ethtool_stats,
1686 .get_coalesce = i40e_get_coalesce,
1687 .set_coalesce = i40e_set_coalesce,
1688 .get_channels = i40e_get_channels,
1689 .set_channels = i40e_set_channels,
1690 .get_ts_info = i40e_get_ts_info,
1691};
1692
1693void i40e_set_ethtool_ops(struct net_device *netdev)
1694{
1695 SET_ETHTOOL_OPS(netdev, &i40e_ethtool_ops);
1696}