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1/****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2013 Solarflare Communications Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
9 */
10
11#include <linux/netdevice.h>
12#include <linux/ethtool.h>
13#include <linux/rtnetlink.h>
14#include <linux/in.h>
15#include "net_driver.h"
16#include "workarounds.h"
17#include "selftest.h"
18#include "efx.h"
19#include "filter.h"
20#include "nic.h"
21
22struct efx_sw_stat_desc {
23 const char *name;
24 enum {
25 EFX_ETHTOOL_STAT_SOURCE_nic,
26 EFX_ETHTOOL_STAT_SOURCE_channel,
27 EFX_ETHTOOL_STAT_SOURCE_tx_queue
28 } source;
29 unsigned offset;
30 u64(*get_stat) (void *field); /* Reader function */
31};
32
33/* Initialiser for a struct efx_sw_stat_desc with type-checking */
34#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
35 get_stat_function) { \
36 .name = #stat_name, \
37 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
38 .offset = ((((field_type *) 0) == \
39 &((struct efx_##source_name *)0)->field) ? \
40 offsetof(struct efx_##source_name, field) : \
41 offsetof(struct efx_##source_name, field)), \
42 .get_stat = get_stat_function, \
43}
44
45static u64 efx_get_uint_stat(void *field)
46{
47 return *(unsigned int *)field;
48}
49
50static u64 efx_get_atomic_stat(void *field)
51{
52 return atomic_read((atomic_t *) field);
53}
54
55#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
56 EFX_ETHTOOL_STAT(field, nic, field, \
57 atomic_t, efx_get_atomic_stat)
58
59#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
60 EFX_ETHTOOL_STAT(field, channel, n_##field, \
61 unsigned int, efx_get_uint_stat)
62
63#define EFX_ETHTOOL_UINT_TXQ_STAT(field) \
64 EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \
65 unsigned int, efx_get_uint_stat)
66
67static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
68 EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
69 EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
70 EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
71 EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
72 EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
73 EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
74 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
75 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
76 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
77 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
78 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
79 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
80 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_nodesc_trunc),
81 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
82 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
83};
84
85#define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
86
87#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
88
89/**************************************************************************
90 *
91 * Ethtool operations
92 *
93 **************************************************************************
94 */
95
96/* Identify device by flashing LEDs */
97static int efx_ethtool_phys_id(struct net_device *net_dev,
98 enum ethtool_phys_id_state state)
99{
100 struct efx_nic *efx = netdev_priv(net_dev);
101 enum efx_led_mode mode = EFX_LED_DEFAULT;
102
103 switch (state) {
104 case ETHTOOL_ID_ON:
105 mode = EFX_LED_ON;
106 break;
107 case ETHTOOL_ID_OFF:
108 mode = EFX_LED_OFF;
109 break;
110 case ETHTOOL_ID_INACTIVE:
111 mode = EFX_LED_DEFAULT;
112 break;
113 case ETHTOOL_ID_ACTIVE:
114 return 1; /* cycle on/off once per second */
115 }
116
117 efx->type->set_id_led(efx, mode);
118 return 0;
119}
120
121/* This must be called with rtnl_lock held. */
122static int efx_ethtool_get_settings(struct net_device *net_dev,
123 struct ethtool_cmd *ecmd)
124{
125 struct efx_nic *efx = netdev_priv(net_dev);
126 struct efx_link_state *link_state = &efx->link_state;
127
128 mutex_lock(&efx->mac_lock);
129 efx->phy_op->get_settings(efx, ecmd);
130 mutex_unlock(&efx->mac_lock);
131
132 /* Both MACs support pause frames (bidirectional and respond-only) */
133 ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
134
135 if (LOOPBACK_INTERNAL(efx)) {
136 ethtool_cmd_speed_set(ecmd, link_state->speed);
137 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
138 }
139
140 return 0;
141}
142
143/* This must be called with rtnl_lock held. */
144static int efx_ethtool_set_settings(struct net_device *net_dev,
145 struct ethtool_cmd *ecmd)
146{
147 struct efx_nic *efx = netdev_priv(net_dev);
148 int rc;
149
150 /* GMAC does not support 1000Mbps HD */
151 if ((ethtool_cmd_speed(ecmd) == SPEED_1000) &&
152 (ecmd->duplex != DUPLEX_FULL)) {
153 netif_dbg(efx, drv, efx->net_dev,
154 "rejecting unsupported 1000Mbps HD setting\n");
155 return -EINVAL;
156 }
157
158 mutex_lock(&efx->mac_lock);
159 rc = efx->phy_op->set_settings(efx, ecmd);
160 mutex_unlock(&efx->mac_lock);
161 return rc;
162}
163
164static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
165 struct ethtool_drvinfo *info)
166{
167 struct efx_nic *efx = netdev_priv(net_dev);
168
169 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
170 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
171 if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
172 efx_mcdi_print_fwver(efx, info->fw_version,
173 sizeof(info->fw_version));
174 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
175}
176
177static int efx_ethtool_get_regs_len(struct net_device *net_dev)
178{
179 return efx_nic_get_regs_len(netdev_priv(net_dev));
180}
181
182static void efx_ethtool_get_regs(struct net_device *net_dev,
183 struct ethtool_regs *regs, void *buf)
184{
185 struct efx_nic *efx = netdev_priv(net_dev);
186
187 regs->version = efx->type->revision;
188 efx_nic_get_regs(efx, buf);
189}
190
191static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
192{
193 struct efx_nic *efx = netdev_priv(net_dev);
194 return efx->msg_enable;
195}
196
197static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
198{
199 struct efx_nic *efx = netdev_priv(net_dev);
200 efx->msg_enable = msg_enable;
201}
202
203/**
204 * efx_fill_test - fill in an individual self-test entry
205 * @test_index: Index of the test
206 * @strings: Ethtool strings, or %NULL
207 * @data: Ethtool test results, or %NULL
208 * @test: Pointer to test result (used only if data != %NULL)
209 * @unit_format: Unit name format (e.g. "chan\%d")
210 * @unit_id: Unit id (e.g. 0 for "chan0")
211 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
212 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
213 *
214 * Fill in an individual self-test entry.
215 */
216static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
217 int *test, const char *unit_format, int unit_id,
218 const char *test_format, const char *test_id)
219{
220 char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
221
222 /* Fill data value, if applicable */
223 if (data)
224 data[test_index] = *test;
225
226 /* Fill string, if applicable */
227 if (strings) {
228 if (strchr(unit_format, '%'))
229 snprintf(unit_str, sizeof(unit_str),
230 unit_format, unit_id);
231 else
232 strcpy(unit_str, unit_format);
233 snprintf(test_str, sizeof(test_str), test_format, test_id);
234 snprintf(strings + test_index * ETH_GSTRING_LEN,
235 ETH_GSTRING_LEN,
236 "%-6s %-24s", unit_str, test_str);
237 }
238}
239
240#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
241#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
242#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
243#define EFX_LOOPBACK_NAME(_mode, _counter) \
244 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
245
246/**
247 * efx_fill_loopback_test - fill in a block of loopback self-test entries
248 * @efx: Efx NIC
249 * @lb_tests: Efx loopback self-test results structure
250 * @mode: Loopback test mode
251 * @test_index: Starting index of the test
252 * @strings: Ethtool strings, or %NULL
253 * @data: Ethtool test results, or %NULL
254 *
255 * Fill in a block of loopback self-test entries. Return new test
256 * index.
257 */
258static int efx_fill_loopback_test(struct efx_nic *efx,
259 struct efx_loopback_self_tests *lb_tests,
260 enum efx_loopback_mode mode,
261 unsigned int test_index,
262 u8 *strings, u64 *data)
263{
264 struct efx_channel *channel =
265 efx_get_channel(efx, efx->tx_channel_offset);
266 struct efx_tx_queue *tx_queue;
267
268 efx_for_each_channel_tx_queue(tx_queue, channel) {
269 efx_fill_test(test_index++, strings, data,
270 &lb_tests->tx_sent[tx_queue->queue],
271 EFX_TX_QUEUE_NAME(tx_queue),
272 EFX_LOOPBACK_NAME(mode, "tx_sent"));
273 efx_fill_test(test_index++, strings, data,
274 &lb_tests->tx_done[tx_queue->queue],
275 EFX_TX_QUEUE_NAME(tx_queue),
276 EFX_LOOPBACK_NAME(mode, "tx_done"));
277 }
278 efx_fill_test(test_index++, strings, data,
279 &lb_tests->rx_good,
280 "rx", 0,
281 EFX_LOOPBACK_NAME(mode, "rx_good"));
282 efx_fill_test(test_index++, strings, data,
283 &lb_tests->rx_bad,
284 "rx", 0,
285 EFX_LOOPBACK_NAME(mode, "rx_bad"));
286
287 return test_index;
288}
289
290/**
291 * efx_ethtool_fill_self_tests - get self-test details
292 * @efx: Efx NIC
293 * @tests: Efx self-test results structure, or %NULL
294 * @strings: Ethtool strings, or %NULL
295 * @data: Ethtool test results, or %NULL
296 *
297 * Get self-test number of strings, strings, and/or test results.
298 * Return number of strings (== number of test results).
299 *
300 * The reason for merging these three functions is to make sure that
301 * they can never be inconsistent.
302 */
303static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
304 struct efx_self_tests *tests,
305 u8 *strings, u64 *data)
306{
307 struct efx_channel *channel;
308 unsigned int n = 0, i;
309 enum efx_loopback_mode mode;
310
311 efx_fill_test(n++, strings, data, &tests->phy_alive,
312 "phy", 0, "alive", NULL);
313 efx_fill_test(n++, strings, data, &tests->nvram,
314 "core", 0, "nvram", NULL);
315 efx_fill_test(n++, strings, data, &tests->interrupt,
316 "core", 0, "interrupt", NULL);
317
318 /* Event queues */
319 efx_for_each_channel(channel, efx) {
320 efx_fill_test(n++, strings, data,
321 &tests->eventq_dma[channel->channel],
322 EFX_CHANNEL_NAME(channel),
323 "eventq.dma", NULL);
324 efx_fill_test(n++, strings, data,
325 &tests->eventq_int[channel->channel],
326 EFX_CHANNEL_NAME(channel),
327 "eventq.int", NULL);
328 }
329
330 efx_fill_test(n++, strings, data, &tests->memory,
331 "core", 0, "memory", NULL);
332 efx_fill_test(n++, strings, data, &tests->registers,
333 "core", 0, "registers", NULL);
334
335 if (efx->phy_op->run_tests != NULL) {
336 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
337
338 for (i = 0; true; ++i) {
339 const char *name;
340
341 EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
342 name = efx->phy_op->test_name(efx, i);
343 if (name == NULL)
344 break;
345
346 efx_fill_test(n++, strings, data, &tests->phy_ext[i],
347 "phy", 0, name, NULL);
348 }
349 }
350
351 /* Loopback tests */
352 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
353 if (!(efx->loopback_modes & (1 << mode)))
354 continue;
355 n = efx_fill_loopback_test(efx,
356 &tests->loopback[mode], mode, n,
357 strings, data);
358 }
359
360 return n;
361}
362
363static int efx_ethtool_get_sset_count(struct net_device *net_dev,
364 int string_set)
365{
366 struct efx_nic *efx = netdev_priv(net_dev);
367
368 switch (string_set) {
369 case ETH_SS_STATS:
370 return efx->type->describe_stats(efx, NULL) +
371 EFX_ETHTOOL_SW_STAT_COUNT +
372 efx_ptp_describe_stats(efx, NULL);
373 case ETH_SS_TEST:
374 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
375 default:
376 return -EINVAL;
377 }
378}
379
380static void efx_ethtool_get_strings(struct net_device *net_dev,
381 u32 string_set, u8 *strings)
382{
383 struct efx_nic *efx = netdev_priv(net_dev);
384 int i;
385
386 switch (string_set) {
387 case ETH_SS_STATS:
388 strings += (efx->type->describe_stats(efx, strings) *
389 ETH_GSTRING_LEN);
390 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
391 strlcpy(strings + i * ETH_GSTRING_LEN,
392 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
393 strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
394 efx_ptp_describe_stats(efx, strings);
395 break;
396 case ETH_SS_TEST:
397 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
398 break;
399 default:
400 /* No other string sets */
401 break;
402 }
403}
404
405static void efx_ethtool_get_stats(struct net_device *net_dev,
406 struct ethtool_stats *stats,
407 u64 *data)
408{
409 struct efx_nic *efx = netdev_priv(net_dev);
410 const struct efx_sw_stat_desc *stat;
411 struct efx_channel *channel;
412 struct efx_tx_queue *tx_queue;
413 int i;
414
415 spin_lock_bh(&efx->stats_lock);
416
417 /* Get NIC statistics */
418 data += efx->type->update_stats(efx, data, NULL);
419
420 /* Get software statistics */
421 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
422 stat = &efx_sw_stat_desc[i];
423 switch (stat->source) {
424 case EFX_ETHTOOL_STAT_SOURCE_nic:
425 data[i] = stat->get_stat((void *)efx + stat->offset);
426 break;
427 case EFX_ETHTOOL_STAT_SOURCE_channel:
428 data[i] = 0;
429 efx_for_each_channel(channel, efx)
430 data[i] += stat->get_stat((void *)channel +
431 stat->offset);
432 break;
433 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
434 data[i] = 0;
435 efx_for_each_channel(channel, efx) {
436 efx_for_each_channel_tx_queue(tx_queue, channel)
437 data[i] +=
438 stat->get_stat((void *)tx_queue
439 + stat->offset);
440 }
441 break;
442 }
443 }
444 data += EFX_ETHTOOL_SW_STAT_COUNT;
445
446 spin_unlock_bh(&efx->stats_lock);
447
448 efx_ptp_update_stats(efx, data);
449}
450
451static void efx_ethtool_self_test(struct net_device *net_dev,
452 struct ethtool_test *test, u64 *data)
453{
454 struct efx_nic *efx = netdev_priv(net_dev);
455 struct efx_self_tests *efx_tests;
456 bool already_up;
457 int rc = -ENOMEM;
458
459 efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
460 if (!efx_tests)
461 goto fail;
462
463 if (efx->state != STATE_READY) {
464 rc = -EBUSY;
465 goto out;
466 }
467
468 netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
469 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
470
471 /* We need rx buffers and interrupts. */
472 already_up = (efx->net_dev->flags & IFF_UP);
473 if (!already_up) {
474 rc = dev_open(efx->net_dev);
475 if (rc) {
476 netif_err(efx, drv, efx->net_dev,
477 "failed opening device.\n");
478 goto out;
479 }
480 }
481
482 rc = efx_selftest(efx, efx_tests, test->flags);
483
484 if (!already_up)
485 dev_close(efx->net_dev);
486
487 netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
488 rc == 0 ? "passed" : "failed",
489 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
490
491out:
492 efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
493 kfree(efx_tests);
494fail:
495 if (rc)
496 test->flags |= ETH_TEST_FL_FAILED;
497}
498
499/* Restart autonegotiation */
500static int efx_ethtool_nway_reset(struct net_device *net_dev)
501{
502 struct efx_nic *efx = netdev_priv(net_dev);
503
504 return mdio45_nway_restart(&efx->mdio);
505}
506
507/*
508 * Each channel has a single IRQ and moderation timer, started by any
509 * completion (or other event). Unless the module parameter
510 * separate_tx_channels is set, IRQs and moderation are therefore
511 * shared between RX and TX completions. In this case, when RX IRQ
512 * moderation is explicitly changed then TX IRQ moderation is
513 * automatically changed too, but otherwise we fail if the two values
514 * are requested to be different.
515 *
516 * The hardware does not support a limit on the number of completions
517 * before an IRQ, so we do not use the max_frames fields. We should
518 * report and require that max_frames == (usecs != 0), but this would
519 * invalidate existing user documentation.
520 *
521 * The hardware does not have distinct settings for interrupt
522 * moderation while the previous IRQ is being handled, so we should
523 * not use the 'irq' fields. However, an earlier developer
524 * misunderstood the meaning of the 'irq' fields and the driver did
525 * not support the standard fields. To avoid invalidating existing
526 * user documentation, we report and accept changes through either the
527 * standard or 'irq' fields. If both are changed at the same time, we
528 * prefer the standard field.
529 *
530 * We implement adaptive IRQ moderation, but use a different algorithm
531 * from that assumed in the definition of struct ethtool_coalesce.
532 * Therefore we do not use any of the adaptive moderation parameters
533 * in it.
534 */
535
536static int efx_ethtool_get_coalesce(struct net_device *net_dev,
537 struct ethtool_coalesce *coalesce)
538{
539 struct efx_nic *efx = netdev_priv(net_dev);
540 unsigned int tx_usecs, rx_usecs;
541 bool rx_adaptive;
542
543 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
544
545 coalesce->tx_coalesce_usecs = tx_usecs;
546 coalesce->tx_coalesce_usecs_irq = tx_usecs;
547 coalesce->rx_coalesce_usecs = rx_usecs;
548 coalesce->rx_coalesce_usecs_irq = rx_usecs;
549 coalesce->use_adaptive_rx_coalesce = rx_adaptive;
550
551 return 0;
552}
553
554static int efx_ethtool_set_coalesce(struct net_device *net_dev,
555 struct ethtool_coalesce *coalesce)
556{
557 struct efx_nic *efx = netdev_priv(net_dev);
558 struct efx_channel *channel;
559 unsigned int tx_usecs, rx_usecs;
560 bool adaptive, rx_may_override_tx;
561 int rc;
562
563 if (coalesce->use_adaptive_tx_coalesce)
564 return -EINVAL;
565
566 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
567
568 if (coalesce->rx_coalesce_usecs != rx_usecs)
569 rx_usecs = coalesce->rx_coalesce_usecs;
570 else
571 rx_usecs = coalesce->rx_coalesce_usecs_irq;
572
573 adaptive = coalesce->use_adaptive_rx_coalesce;
574
575 /* If channels are shared, TX IRQ moderation can be quietly
576 * overridden unless it is changed from its old value.
577 */
578 rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
579 coalesce->tx_coalesce_usecs_irq == tx_usecs);
580 if (coalesce->tx_coalesce_usecs != tx_usecs)
581 tx_usecs = coalesce->tx_coalesce_usecs;
582 else
583 tx_usecs = coalesce->tx_coalesce_usecs_irq;
584
585 rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
586 rx_may_override_tx);
587 if (rc != 0)
588 return rc;
589
590 efx_for_each_channel(channel, efx)
591 efx->type->push_irq_moderation(channel);
592
593 return 0;
594}
595
596static void efx_ethtool_get_ringparam(struct net_device *net_dev,
597 struct ethtool_ringparam *ring)
598{
599 struct efx_nic *efx = netdev_priv(net_dev);
600
601 ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
602 ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx);
603 ring->rx_pending = efx->rxq_entries;
604 ring->tx_pending = efx->txq_entries;
605}
606
607static int efx_ethtool_set_ringparam(struct net_device *net_dev,
608 struct ethtool_ringparam *ring)
609{
610 struct efx_nic *efx = netdev_priv(net_dev);
611 u32 txq_entries;
612
613 if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
614 ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
615 ring->tx_pending > EFX_TXQ_MAX_ENT(efx))
616 return -EINVAL;
617
618 if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
619 netif_err(efx, drv, efx->net_dev,
620 "RX queues cannot be smaller than %u\n",
621 EFX_RXQ_MIN_ENT);
622 return -EINVAL;
623 }
624
625 txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
626 if (txq_entries != ring->tx_pending)
627 netif_warn(efx, drv, efx->net_dev,
628 "increasing TX queue size to minimum of %u\n",
629 txq_entries);
630
631 return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
632}
633
634static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
635 struct ethtool_pauseparam *pause)
636{
637 struct efx_nic *efx = netdev_priv(net_dev);
638 u8 wanted_fc, old_fc;
639 u32 old_adv;
640 int rc = 0;
641
642 mutex_lock(&efx->mac_lock);
643
644 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
645 (pause->tx_pause ? EFX_FC_TX : 0) |
646 (pause->autoneg ? EFX_FC_AUTO : 0));
647
648 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
649 netif_dbg(efx, drv, efx->net_dev,
650 "Flow control unsupported: tx ON rx OFF\n");
651 rc = -EINVAL;
652 goto out;
653 }
654
655 if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
656 netif_dbg(efx, drv, efx->net_dev,
657 "Autonegotiation is disabled\n");
658 rc = -EINVAL;
659 goto out;
660 }
661
662 /* Hook for Falcon bug 11482 workaround */
663 if (efx->type->prepare_enable_fc_tx &&
664 (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX))
665 efx->type->prepare_enable_fc_tx(efx);
666
667 old_adv = efx->link_advertising;
668 old_fc = efx->wanted_fc;
669 efx_link_set_wanted_fc(efx, wanted_fc);
670 if (efx->link_advertising != old_adv ||
671 (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
672 rc = efx->phy_op->reconfigure(efx);
673 if (rc) {
674 netif_err(efx, drv, efx->net_dev,
675 "Unable to advertise requested flow "
676 "control setting\n");
677 goto out;
678 }
679 }
680
681 /* Reconfigure the MAC. The PHY *may* generate a link state change event
682 * if the user just changed the advertised capabilities, but there's no
683 * harm doing this twice */
684 efx->type->reconfigure_mac(efx);
685
686out:
687 mutex_unlock(&efx->mac_lock);
688
689 return rc;
690}
691
692static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
693 struct ethtool_pauseparam *pause)
694{
695 struct efx_nic *efx = netdev_priv(net_dev);
696
697 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
698 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
699 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
700}
701
702static void efx_ethtool_get_wol(struct net_device *net_dev,
703 struct ethtool_wolinfo *wol)
704{
705 struct efx_nic *efx = netdev_priv(net_dev);
706 return efx->type->get_wol(efx, wol);
707}
708
709
710static int efx_ethtool_set_wol(struct net_device *net_dev,
711 struct ethtool_wolinfo *wol)
712{
713 struct efx_nic *efx = netdev_priv(net_dev);
714 return efx->type->set_wol(efx, wol->wolopts);
715}
716
717static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
718{
719 struct efx_nic *efx = netdev_priv(net_dev);
720 int rc;
721
722 rc = efx->type->map_reset_flags(flags);
723 if (rc < 0)
724 return rc;
725
726 return efx_reset(efx, rc);
727}
728
729/* MAC address mask including only I/G bit */
730static const u8 mac_addr_ig_mask[ETH_ALEN] __aligned(2) = {0x01, 0, 0, 0, 0, 0};
731
732#define IP4_ADDR_FULL_MASK ((__force __be32)~0)
733#define PORT_FULL_MASK ((__force __be16)~0)
734#define ETHER_TYPE_FULL_MASK ((__force __be16)~0)
735
736static int efx_ethtool_get_class_rule(struct efx_nic *efx,
737 struct ethtool_rx_flow_spec *rule)
738{
739 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
740 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
741 struct ethhdr *mac_entry = &rule->h_u.ether_spec;
742 struct ethhdr *mac_mask = &rule->m_u.ether_spec;
743 struct efx_filter_spec spec;
744 int rc;
745
746 rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL,
747 rule->location, &spec);
748 if (rc)
749 return rc;
750
751 if (spec.dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP)
752 rule->ring_cookie = RX_CLS_FLOW_DISC;
753 else
754 rule->ring_cookie = spec.dmaq_id;
755
756 if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
757 spec.ether_type == htons(ETH_P_IP) &&
758 (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
759 (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
760 !(spec.match_flags &
761 ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
762 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
763 EFX_FILTER_MATCH_IP_PROTO |
764 EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
765 rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
766 TCP_V4_FLOW : UDP_V4_FLOW);
767 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
768 ip_entry->ip4dst = spec.loc_host[0];
769 ip_mask->ip4dst = IP4_ADDR_FULL_MASK;
770 }
771 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
772 ip_entry->ip4src = spec.rem_host[0];
773 ip_mask->ip4src = IP4_ADDR_FULL_MASK;
774 }
775 if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
776 ip_entry->pdst = spec.loc_port;
777 ip_mask->pdst = PORT_FULL_MASK;
778 }
779 if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
780 ip_entry->psrc = spec.rem_port;
781 ip_mask->psrc = PORT_FULL_MASK;
782 }
783 } else if (!(spec.match_flags &
784 ~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG |
785 EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE |
786 EFX_FILTER_MATCH_OUTER_VID))) {
787 rule->flow_type = ETHER_FLOW;
788 if (spec.match_flags &
789 (EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG)) {
790 ether_addr_copy(mac_entry->h_dest, spec.loc_mac);
791 if (spec.match_flags & EFX_FILTER_MATCH_LOC_MAC)
792 eth_broadcast_addr(mac_mask->h_dest);
793 else
794 ether_addr_copy(mac_mask->h_dest,
795 mac_addr_ig_mask);
796 }
797 if (spec.match_flags & EFX_FILTER_MATCH_REM_MAC) {
798 ether_addr_copy(mac_entry->h_source, spec.rem_mac);
799 eth_broadcast_addr(mac_mask->h_source);
800 }
801 if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
802 mac_entry->h_proto = spec.ether_type;
803 mac_mask->h_proto = ETHER_TYPE_FULL_MASK;
804 }
805 } else {
806 /* The above should handle all filters that we insert */
807 WARN_ON(1);
808 return -EINVAL;
809 }
810
811 if (spec.match_flags & EFX_FILTER_MATCH_OUTER_VID) {
812 rule->flow_type |= FLOW_EXT;
813 rule->h_ext.vlan_tci = spec.outer_vid;
814 rule->m_ext.vlan_tci = htons(0xfff);
815 }
816
817 return rc;
818}
819
820static int
821efx_ethtool_get_rxnfc(struct net_device *net_dev,
822 struct ethtool_rxnfc *info, u32 *rule_locs)
823{
824 struct efx_nic *efx = netdev_priv(net_dev);
825
826 switch (info->cmd) {
827 case ETHTOOL_GRXRINGS:
828 info->data = efx->n_rx_channels;
829 return 0;
830
831 case ETHTOOL_GRXFH: {
832 unsigned min_revision = 0;
833
834 info->data = 0;
835 switch (info->flow_type) {
836 case TCP_V4_FLOW:
837 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
838 /* fall through */
839 case UDP_V4_FLOW:
840 case SCTP_V4_FLOW:
841 case AH_ESP_V4_FLOW:
842 case IPV4_FLOW:
843 info->data |= RXH_IP_SRC | RXH_IP_DST;
844 min_revision = EFX_REV_FALCON_B0;
845 break;
846 case TCP_V6_FLOW:
847 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
848 /* fall through */
849 case UDP_V6_FLOW:
850 case SCTP_V6_FLOW:
851 case AH_ESP_V6_FLOW:
852 case IPV6_FLOW:
853 info->data |= RXH_IP_SRC | RXH_IP_DST;
854 min_revision = EFX_REV_SIENA_A0;
855 break;
856 default:
857 break;
858 }
859 if (efx_nic_rev(efx) < min_revision)
860 info->data = 0;
861 return 0;
862 }
863
864 case ETHTOOL_GRXCLSRLCNT:
865 info->data = efx_filter_get_rx_id_limit(efx);
866 if (info->data == 0)
867 return -EOPNOTSUPP;
868 info->data |= RX_CLS_LOC_SPECIAL;
869 info->rule_cnt =
870 efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL);
871 return 0;
872
873 case ETHTOOL_GRXCLSRULE:
874 if (efx_filter_get_rx_id_limit(efx) == 0)
875 return -EOPNOTSUPP;
876 return efx_ethtool_get_class_rule(efx, &info->fs);
877
878 case ETHTOOL_GRXCLSRLALL: {
879 s32 rc;
880 info->data = efx_filter_get_rx_id_limit(efx);
881 if (info->data == 0)
882 return -EOPNOTSUPP;
883 rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL,
884 rule_locs, info->rule_cnt);
885 if (rc < 0)
886 return rc;
887 info->rule_cnt = rc;
888 return 0;
889 }
890
891 default:
892 return -EOPNOTSUPP;
893 }
894}
895
896static int efx_ethtool_set_class_rule(struct efx_nic *efx,
897 struct ethtool_rx_flow_spec *rule)
898{
899 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
900 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
901 struct ethhdr *mac_entry = &rule->h_u.ether_spec;
902 struct ethhdr *mac_mask = &rule->m_u.ether_spec;
903 struct efx_filter_spec spec;
904 int rc;
905
906 /* Check that user wants us to choose the location */
907 if (rule->location != RX_CLS_LOC_ANY)
908 return -EINVAL;
909
910 /* Range-check ring_cookie */
911 if (rule->ring_cookie >= efx->n_rx_channels &&
912 rule->ring_cookie != RX_CLS_FLOW_DISC)
913 return -EINVAL;
914
915 /* Check for unsupported extensions */
916 if ((rule->flow_type & FLOW_EXT) &&
917 (rule->m_ext.vlan_etype || rule->m_ext.data[0] ||
918 rule->m_ext.data[1]))
919 return -EINVAL;
920
921 efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL,
922 efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0,
923 (rule->ring_cookie == RX_CLS_FLOW_DISC) ?
924 EFX_FILTER_RX_DMAQ_ID_DROP : rule->ring_cookie);
925
926 switch (rule->flow_type & ~FLOW_EXT) {
927 case TCP_V4_FLOW:
928 case UDP_V4_FLOW:
929 spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
930 EFX_FILTER_MATCH_IP_PROTO);
931 spec.ether_type = htons(ETH_P_IP);
932 spec.ip_proto = ((rule->flow_type & ~FLOW_EXT) == TCP_V4_FLOW ?
933 IPPROTO_TCP : IPPROTO_UDP);
934 if (ip_mask->ip4dst) {
935 if (ip_mask->ip4dst != IP4_ADDR_FULL_MASK)
936 return -EINVAL;
937 spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
938 spec.loc_host[0] = ip_entry->ip4dst;
939 }
940 if (ip_mask->ip4src) {
941 if (ip_mask->ip4src != IP4_ADDR_FULL_MASK)
942 return -EINVAL;
943 spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
944 spec.rem_host[0] = ip_entry->ip4src;
945 }
946 if (ip_mask->pdst) {
947 if (ip_mask->pdst != PORT_FULL_MASK)
948 return -EINVAL;
949 spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
950 spec.loc_port = ip_entry->pdst;
951 }
952 if (ip_mask->psrc) {
953 if (ip_mask->psrc != PORT_FULL_MASK)
954 return -EINVAL;
955 spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
956 spec.rem_port = ip_entry->psrc;
957 }
958 if (ip_mask->tos)
959 return -EINVAL;
960 break;
961
962 case ETHER_FLOW:
963 if (!is_zero_ether_addr(mac_mask->h_dest)) {
964 if (ether_addr_equal(mac_mask->h_dest,
965 mac_addr_ig_mask))
966 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
967 else if (is_broadcast_ether_addr(mac_mask->h_dest))
968 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC;
969 else
970 return -EINVAL;
971 ether_addr_copy(spec.loc_mac, mac_entry->h_dest);
972 }
973 if (!is_zero_ether_addr(mac_mask->h_source)) {
974 if (!is_broadcast_ether_addr(mac_mask->h_source))
975 return -EINVAL;
976 spec.match_flags |= EFX_FILTER_MATCH_REM_MAC;
977 ether_addr_copy(spec.rem_mac, mac_entry->h_source);
978 }
979 if (mac_mask->h_proto) {
980 if (mac_mask->h_proto != ETHER_TYPE_FULL_MASK)
981 return -EINVAL;
982 spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
983 spec.ether_type = mac_entry->h_proto;
984 }
985 break;
986
987 default:
988 return -EINVAL;
989 }
990
991 if ((rule->flow_type & FLOW_EXT) && rule->m_ext.vlan_tci) {
992 if (rule->m_ext.vlan_tci != htons(0xfff))
993 return -EINVAL;
994 spec.match_flags |= EFX_FILTER_MATCH_OUTER_VID;
995 spec.outer_vid = rule->h_ext.vlan_tci;
996 }
997
998 rc = efx_filter_insert_filter(efx, &spec, true);
999 if (rc < 0)
1000 return rc;
1001
1002 rule->location = rc;
1003 return 0;
1004}
1005
1006static int efx_ethtool_set_rxnfc(struct net_device *net_dev,
1007 struct ethtool_rxnfc *info)
1008{
1009 struct efx_nic *efx = netdev_priv(net_dev);
1010
1011 if (efx_filter_get_rx_id_limit(efx) == 0)
1012 return -EOPNOTSUPP;
1013
1014 switch (info->cmd) {
1015 case ETHTOOL_SRXCLSRLINS:
1016 return efx_ethtool_set_class_rule(efx, &info->fs);
1017
1018 case ETHTOOL_SRXCLSRLDEL:
1019 return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL,
1020 info->fs.location);
1021
1022 default:
1023 return -EOPNOTSUPP;
1024 }
1025}
1026
1027static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
1028{
1029 struct efx_nic *efx = netdev_priv(net_dev);
1030
1031 return ((efx_nic_rev(efx) < EFX_REV_FALCON_B0 ||
1032 efx->n_rx_channels == 1) ?
1033 0 : ARRAY_SIZE(efx->rx_indir_table));
1034}
1035
1036static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev, u32 *indir)
1037{
1038 struct efx_nic *efx = netdev_priv(net_dev);
1039
1040 memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
1041 return 0;
1042}
1043
1044static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
1045 const u32 *indir)
1046{
1047 struct efx_nic *efx = netdev_priv(net_dev);
1048
1049 memcpy(efx->rx_indir_table, indir, sizeof(efx->rx_indir_table));
1050 efx->type->rx_push_rss_config(efx);
1051 return 0;
1052}
1053
1054static int efx_ethtool_get_ts_info(struct net_device *net_dev,
1055 struct ethtool_ts_info *ts_info)
1056{
1057 struct efx_nic *efx = netdev_priv(net_dev);
1058
1059 /* Software capabilities */
1060 ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE |
1061 SOF_TIMESTAMPING_SOFTWARE);
1062 ts_info->phc_index = -1;
1063
1064 efx_ptp_get_ts_info(efx, ts_info);
1065 return 0;
1066}
1067
1068static int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
1069 struct ethtool_eeprom *ee,
1070 u8 *data)
1071{
1072 struct efx_nic *efx = netdev_priv(net_dev);
1073 int ret;
1074
1075 if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
1076 return -EOPNOTSUPP;
1077
1078 mutex_lock(&efx->mac_lock);
1079 ret = efx->phy_op->get_module_eeprom(efx, ee, data);
1080 mutex_unlock(&efx->mac_lock);
1081
1082 return ret;
1083}
1084
1085static int efx_ethtool_get_module_info(struct net_device *net_dev,
1086 struct ethtool_modinfo *modinfo)
1087{
1088 struct efx_nic *efx = netdev_priv(net_dev);
1089 int ret;
1090
1091 if (!efx->phy_op || !efx->phy_op->get_module_info)
1092 return -EOPNOTSUPP;
1093
1094 mutex_lock(&efx->mac_lock);
1095 ret = efx->phy_op->get_module_info(efx, modinfo);
1096 mutex_unlock(&efx->mac_lock);
1097
1098 return ret;
1099}
1100
1101const struct ethtool_ops efx_ethtool_ops = {
1102 .get_settings = efx_ethtool_get_settings,
1103 .set_settings = efx_ethtool_set_settings,
1104 .get_drvinfo = efx_ethtool_get_drvinfo,
1105 .get_regs_len = efx_ethtool_get_regs_len,
1106 .get_regs = efx_ethtool_get_regs,
1107 .get_msglevel = efx_ethtool_get_msglevel,
1108 .set_msglevel = efx_ethtool_set_msglevel,
1109 .nway_reset = efx_ethtool_nway_reset,
1110 .get_link = ethtool_op_get_link,
1111 .get_coalesce = efx_ethtool_get_coalesce,
1112 .set_coalesce = efx_ethtool_set_coalesce,
1113 .get_ringparam = efx_ethtool_get_ringparam,
1114 .set_ringparam = efx_ethtool_set_ringparam,
1115 .get_pauseparam = efx_ethtool_get_pauseparam,
1116 .set_pauseparam = efx_ethtool_set_pauseparam,
1117 .get_sset_count = efx_ethtool_get_sset_count,
1118 .self_test = efx_ethtool_self_test,
1119 .get_strings = efx_ethtool_get_strings,
1120 .set_phys_id = efx_ethtool_phys_id,
1121 .get_ethtool_stats = efx_ethtool_get_stats,
1122 .get_wol = efx_ethtool_get_wol,
1123 .set_wol = efx_ethtool_set_wol,
1124 .reset = efx_ethtool_reset,
1125 .get_rxnfc = efx_ethtool_get_rxnfc,
1126 .set_rxnfc = efx_ethtool_set_rxnfc,
1127 .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size,
1128 .get_rxfh_indir = efx_ethtool_get_rxfh_indir,
1129 .set_rxfh_indir = efx_ethtool_set_rxfh_indir,
1130 .get_ts_info = efx_ethtool_get_ts_info,
1131 .get_module_info = efx_ethtool_get_module_info,
1132 .get_module_eeprom = efx_ethtool_get_module_eeprom,
1133};
1// SPDX-License-Identifier: GPL-2.0-only
2/****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2005-2006 Fen Systems Ltd.
5 * Copyright 2006-2013 Solarflare Communications Inc.
6 */
7
8#include <linux/netdevice.h>
9#include <linux/ethtool.h>
10#include <linux/rtnetlink.h>
11#include <linux/in.h>
12#include "net_driver.h"
13#include "workarounds.h"
14#include "selftest.h"
15#include "efx.h"
16#include "efx_channels.h"
17#include "rx_common.h"
18#include "tx_common.h"
19#include "ethtool_common.h"
20#include "filter.h"
21#include "nic.h"
22
23#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
24
25/**************************************************************************
26 *
27 * Ethtool operations
28 *
29 **************************************************************************
30 */
31
32/* Identify device by flashing LEDs */
33static int efx_ethtool_phys_id(struct net_device *net_dev,
34 enum ethtool_phys_id_state state)
35{
36 struct efx_nic *efx = efx_netdev_priv(net_dev);
37 enum efx_led_mode mode = EFX_LED_DEFAULT;
38
39 switch (state) {
40 case ETHTOOL_ID_ON:
41 mode = EFX_LED_ON;
42 break;
43 case ETHTOOL_ID_OFF:
44 mode = EFX_LED_OFF;
45 break;
46 case ETHTOOL_ID_INACTIVE:
47 mode = EFX_LED_DEFAULT;
48 break;
49 case ETHTOOL_ID_ACTIVE:
50 return 1; /* cycle on/off once per second */
51 }
52
53 return efx_mcdi_set_id_led(efx, mode);
54}
55
56static int efx_ethtool_get_regs_len(struct net_device *net_dev)
57{
58 return efx_nic_get_regs_len(efx_netdev_priv(net_dev));
59}
60
61static void efx_ethtool_get_regs(struct net_device *net_dev,
62 struct ethtool_regs *regs, void *buf)
63{
64 struct efx_nic *efx = efx_netdev_priv(net_dev);
65
66 regs->version = efx->type->revision;
67 efx_nic_get_regs(efx, buf);
68}
69
70/*
71 * Each channel has a single IRQ and moderation timer, started by any
72 * completion (or other event). Unless the module parameter
73 * separate_tx_channels is set, IRQs and moderation are therefore
74 * shared between RX and TX completions. In this case, when RX IRQ
75 * moderation is explicitly changed then TX IRQ moderation is
76 * automatically changed too, but otherwise we fail if the two values
77 * are requested to be different.
78 *
79 * The hardware does not support a limit on the number of completions
80 * before an IRQ, so we do not use the max_frames fields. We should
81 * report and require that max_frames == (usecs != 0), but this would
82 * invalidate existing user documentation.
83 *
84 * The hardware does not have distinct settings for interrupt
85 * moderation while the previous IRQ is being handled, so we should
86 * not use the 'irq' fields. However, an earlier developer
87 * misunderstood the meaning of the 'irq' fields and the driver did
88 * not support the standard fields. To avoid invalidating existing
89 * user documentation, we report and accept changes through either the
90 * standard or 'irq' fields. If both are changed at the same time, we
91 * prefer the standard field.
92 *
93 * We implement adaptive IRQ moderation, but use a different algorithm
94 * from that assumed in the definition of struct ethtool_coalesce.
95 * Therefore we do not use any of the adaptive moderation parameters
96 * in it.
97 */
98
99static int efx_ethtool_get_coalesce(struct net_device *net_dev,
100 struct ethtool_coalesce *coalesce,
101 struct kernel_ethtool_coalesce *kernel_coal,
102 struct netlink_ext_ack *extack)
103{
104 struct efx_nic *efx = efx_netdev_priv(net_dev);
105 unsigned int tx_usecs, rx_usecs;
106 bool rx_adaptive;
107
108 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
109
110 coalesce->tx_coalesce_usecs = tx_usecs;
111 coalesce->tx_coalesce_usecs_irq = tx_usecs;
112 coalesce->rx_coalesce_usecs = rx_usecs;
113 coalesce->rx_coalesce_usecs_irq = rx_usecs;
114 coalesce->use_adaptive_rx_coalesce = rx_adaptive;
115
116 return 0;
117}
118
119static int efx_ethtool_set_coalesce(struct net_device *net_dev,
120 struct ethtool_coalesce *coalesce,
121 struct kernel_ethtool_coalesce *kernel_coal,
122 struct netlink_ext_ack *extack)
123{
124 struct efx_nic *efx = efx_netdev_priv(net_dev);
125 struct efx_channel *channel;
126 unsigned int tx_usecs, rx_usecs;
127 bool adaptive, rx_may_override_tx;
128 int rc;
129
130 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
131
132 if (coalesce->rx_coalesce_usecs != rx_usecs)
133 rx_usecs = coalesce->rx_coalesce_usecs;
134 else
135 rx_usecs = coalesce->rx_coalesce_usecs_irq;
136
137 adaptive = coalesce->use_adaptive_rx_coalesce;
138
139 /* If channels are shared, TX IRQ moderation can be quietly
140 * overridden unless it is changed from its old value.
141 */
142 rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
143 coalesce->tx_coalesce_usecs_irq == tx_usecs);
144 if (coalesce->tx_coalesce_usecs != tx_usecs)
145 tx_usecs = coalesce->tx_coalesce_usecs;
146 else
147 tx_usecs = coalesce->tx_coalesce_usecs_irq;
148
149 rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
150 rx_may_override_tx);
151 if (rc != 0)
152 return rc;
153
154 efx_for_each_channel(channel, efx)
155 efx->type->push_irq_moderation(channel);
156
157 return 0;
158}
159
160static void
161efx_ethtool_get_ringparam(struct net_device *net_dev,
162 struct ethtool_ringparam *ring,
163 struct kernel_ethtool_ringparam *kernel_ring,
164 struct netlink_ext_ack *extack)
165{
166 struct efx_nic *efx = efx_netdev_priv(net_dev);
167
168 ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
169 ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx);
170 ring->rx_pending = efx->rxq_entries;
171 ring->tx_pending = efx->txq_entries;
172}
173
174static int
175efx_ethtool_set_ringparam(struct net_device *net_dev,
176 struct ethtool_ringparam *ring,
177 struct kernel_ethtool_ringparam *kernel_ring,
178 struct netlink_ext_ack *extack)
179{
180 struct efx_nic *efx = efx_netdev_priv(net_dev);
181 u32 txq_entries;
182
183 if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
184 ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
185 ring->tx_pending > EFX_TXQ_MAX_ENT(efx))
186 return -EINVAL;
187
188 if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
189 netif_err(efx, drv, efx->net_dev,
190 "RX queues cannot be smaller than %u\n",
191 EFX_RXQ_MIN_ENT);
192 return -EINVAL;
193 }
194
195 txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
196 if (txq_entries != ring->tx_pending)
197 netif_warn(efx, drv, efx->net_dev,
198 "increasing TX queue size to minimum of %u\n",
199 txq_entries);
200
201 return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
202}
203
204static void efx_ethtool_get_wol(struct net_device *net_dev,
205 struct ethtool_wolinfo *wol)
206{
207 struct efx_nic *efx = efx_netdev_priv(net_dev);
208 return efx->type->get_wol(efx, wol);
209}
210
211
212static int efx_ethtool_set_wol(struct net_device *net_dev,
213 struct ethtool_wolinfo *wol)
214{
215 struct efx_nic *efx = efx_netdev_priv(net_dev);
216 return efx->type->set_wol(efx, wol->wolopts);
217}
218
219static void efx_ethtool_get_fec_stats(struct net_device *net_dev,
220 struct ethtool_fec_stats *fec_stats)
221{
222 struct efx_nic *efx = efx_netdev_priv(net_dev);
223
224 if (efx->type->get_fec_stats)
225 efx->type->get_fec_stats(efx, fec_stats);
226}
227
228static int efx_ethtool_get_ts_info(struct net_device *net_dev,
229 struct kernel_ethtool_ts_info *ts_info)
230{
231 struct efx_nic *efx = efx_netdev_priv(net_dev);
232
233 efx_ptp_get_ts_info(efx, ts_info);
234 return 0;
235}
236
237const struct ethtool_ops efx_ethtool_ops = {
238 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
239 ETHTOOL_COALESCE_USECS_IRQ |
240 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
241 .get_drvinfo = efx_ethtool_get_drvinfo,
242 .get_regs_len = efx_ethtool_get_regs_len,
243 .get_regs = efx_ethtool_get_regs,
244 .get_msglevel = efx_ethtool_get_msglevel,
245 .set_msglevel = efx_ethtool_set_msglevel,
246 .get_link = ethtool_op_get_link,
247 .get_coalesce = efx_ethtool_get_coalesce,
248 .set_coalesce = efx_ethtool_set_coalesce,
249 .get_ringparam = efx_ethtool_get_ringparam,
250 .set_ringparam = efx_ethtool_set_ringparam,
251 .get_pauseparam = efx_ethtool_get_pauseparam,
252 .set_pauseparam = efx_ethtool_set_pauseparam,
253 .get_sset_count = efx_ethtool_get_sset_count,
254 .self_test = efx_ethtool_self_test,
255 .get_strings = efx_ethtool_get_strings,
256 .set_phys_id = efx_ethtool_phys_id,
257 .get_ethtool_stats = efx_ethtool_get_stats,
258 .get_wol = efx_ethtool_get_wol,
259 .set_wol = efx_ethtool_set_wol,
260 .reset = efx_ethtool_reset,
261 .get_rxnfc = efx_ethtool_get_rxnfc,
262 .set_rxnfc = efx_ethtool_set_rxnfc,
263 .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size,
264 .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size,
265 .rxfh_per_ctx_key = true,
266 .cap_rss_rxnfc_adds = true,
267 .rxfh_priv_size = sizeof(struct efx_rss_context_priv),
268 .get_rxfh = efx_ethtool_get_rxfh,
269 .set_rxfh = efx_ethtool_set_rxfh,
270 .create_rxfh_context = efx_ethtool_create_rxfh_context,
271 .modify_rxfh_context = efx_ethtool_modify_rxfh_context,
272 .remove_rxfh_context = efx_ethtool_remove_rxfh_context,
273 .get_ts_info = efx_ethtool_get_ts_info,
274 .get_module_info = efx_ethtool_get_module_info,
275 .get_module_eeprom = efx_ethtool_get_module_eeprom,
276 .get_link_ksettings = efx_ethtool_get_link_ksettings,
277 .set_link_ksettings = efx_ethtool_set_link_ksettings,
278 .get_fec_stats = efx_ethtool_get_fec_stats,
279 .get_fecparam = efx_ethtool_get_fecparam,
280 .set_fecparam = efx_ethtool_set_fecparam,
281};