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kmemtrace: SLOB hooks.
[linux-2.6/kmemtrace.git] / drivers / net / sfc / ethtool.c
blobe2c75d10161093614d104603e498b68c6d6987ce
1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2008 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 "net_driver.h"
15 #include "selftest.h"
16 #include "efx.h"
17 #include "ethtool.h"
18 #include "falcon.h"
19 #include "gmii.h"
20 #include "mac.h"
21
22 const char *efx_loopback_mode_names[] = {
23 [LOOPBACK_NONE] = "NONE",
24 [LOOPBACK_MAC] = "MAC",
25 [LOOPBACK_XGMII] = "XGMII",
26 [LOOPBACK_XGXS] = "XGXS",
27 [LOOPBACK_XAUI] = "XAUI",
28 [LOOPBACK_PHY] = "PHY",
29 [LOOPBACK_PHYXS] = "PHY(XS)",
30 [LOOPBACK_PCS] = "PHY(PCS)",
31 [LOOPBACK_PMAPMD] = "PHY(PMAPMD)",
32 [LOOPBACK_NETWORK] = "NETWORK",
33 };
34
35 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable);
36
37 struct ethtool_string {
38 char name[ETH_GSTRING_LEN];
39 };
40
41 struct efx_ethtool_stat {
42 const char *name;
43 enum {
44 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
45 EFX_ETHTOOL_STAT_SOURCE_nic,
46 EFX_ETHTOOL_STAT_SOURCE_channel
47 } source;
48 unsigned offset;
49 u64(*get_stat) (void *field); /* Reader function */
50 };
51
52 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
53 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
54 get_stat_function) { \
55 .name = #stat_name, \
56 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
57 .offset = ((((field_type *) 0) == \
58 &((struct efx_##source_name *)0)->field) ? \
59 offsetof(struct efx_##source_name, field) : \
60 offsetof(struct efx_##source_name, field)), \
61 .get_stat = get_stat_function, \
62 }
63
64 static u64 efx_get_uint_stat(void *field)
65 {
66 return *(unsigned int *)field;
67 }
68
69 static u64 efx_get_ulong_stat(void *field)
70 {
71 return *(unsigned long *)field;
72 }
73
74 static u64 efx_get_u64_stat(void *field)
75 {
76 return *(u64 *) field;
77 }
78
79 static u64 efx_get_atomic_stat(void *field)
80 {
81 return atomic_read((atomic_t *) field);
82 }
83
84 #define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
85 EFX_ETHTOOL_STAT(field, mac_stats, field, \
86 unsigned long, efx_get_ulong_stat)
87
88 #define EFX_ETHTOOL_U64_MAC_STAT(field) \
89 EFX_ETHTOOL_STAT(field, mac_stats, field, \
90 u64, efx_get_u64_stat)
91
92 #define EFX_ETHTOOL_UINT_NIC_STAT(name) \
93 EFX_ETHTOOL_STAT(name, nic, n_##name, \
94 unsigned int, efx_get_uint_stat)
95
96 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
97 EFX_ETHTOOL_STAT(field, nic, field, \
98 atomic_t, efx_get_atomic_stat)
99
100 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
101 EFX_ETHTOOL_STAT(field, channel, n_##field, \
102 unsigned int, efx_get_uint_stat)
103
104 static struct efx_ethtool_stat efx_ethtool_stats[] = {
105 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
106 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
107 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
119 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
120 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
121 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
122 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
123 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
124 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
125 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
126 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
127 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
128 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
129 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
130 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
131 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
132 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
133 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
134 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
135 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
136 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
150 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
151 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
152 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
153 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
154 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
155 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
156 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
157 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
158 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
159 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
160 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
161 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
162 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
163 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
164 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
165 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
166 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
167 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
168 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
169 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
170 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
171 };
172
173 /* Number of ethtool statistics */
174 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
175
176 /**************************************************************************
177 *
178 * Ethtool operations
179 *
180 **************************************************************************
181 */
182
183 /* Identify device by flashing LEDs */
184 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
185 {
186 struct efx_nic *efx = net_dev->priv;
187
188 efx->board_info.blink(efx, 1);
189 schedule_timeout_interruptible(seconds * HZ);
190 efx->board_info.blink(efx, 0);
191 return 0;
192 }
193
194 /* This must be called with rtnl_lock held. */
195 int efx_ethtool_get_settings(struct net_device *net_dev,
196 struct ethtool_cmd *ecmd)
197 {
198 struct efx_nic *efx = net_dev->priv;
199 int rc;
200
201 mutex_lock(&efx->mac_lock);
202 rc = falcon_xmac_get_settings(efx, ecmd);
203 mutex_unlock(&efx->mac_lock);
204
205 return rc;
206 }
207
208 /* This must be called with rtnl_lock held. */
209 int efx_ethtool_set_settings(struct net_device *net_dev,
210 struct ethtool_cmd *ecmd)
211 {
212 struct efx_nic *efx = net_dev->priv;
213 int rc;
214
215 mutex_lock(&efx->mac_lock);
216 rc = falcon_xmac_set_settings(efx, ecmd);
217 mutex_unlock(&efx->mac_lock);
218 if (!rc)
219 efx_reconfigure_port(efx);
220
221 return rc;
222 }
223
224 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
225 struct ethtool_drvinfo *info)
226 {
227 struct efx_nic *efx = net_dev->priv;
228
229 strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
230 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
231 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
232 }
233
234 /**
235 * efx_fill_test - fill in an individual self-test entry
236 * @test_index: Index of the test
237 * @strings: Ethtool strings, or %NULL
238 * @data: Ethtool test results, or %NULL
239 * @test: Pointer to test result (used only if data != %NULL)
240 * @unit_format: Unit name format (e.g. "channel\%d")
241 * @unit_id: Unit id (e.g. 0 for "channel0")
242 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
243 * @test_id: Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
244 *
245 * Fill in an individual self-test entry.
246 */
247 static void efx_fill_test(unsigned int test_index,
248 struct ethtool_string *strings, u64 *data,
249 int *test, const char *unit_format, int unit_id,
250 const char *test_format, const char *test_id)
251 {
252 struct ethtool_string unit_str, test_str;
253
254 /* Fill data value, if applicable */
255 if (data)
256 data[test_index] = *test;
257
258 /* Fill string, if applicable */
259 if (strings) {
260 snprintf(unit_str.name, sizeof(unit_str.name),
261 unit_format, unit_id);
262 snprintf(test_str.name, sizeof(test_str.name),
263 test_format, test_id);
264 snprintf(strings[test_index].name,
265 sizeof(strings[test_index].name),
266 "%-9s%-17s", unit_str.name, test_str.name);
267 }
268 }
269
270 #define EFX_PORT_NAME "port%d", 0
271 #define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
272 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
273 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
274 #define EFX_LOOPBACK_NAME(_mode, _counter) \
275 "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
276
277 /**
278 * efx_fill_loopback_test - fill in a block of loopback self-test entries
279 * @efx: Efx NIC
280 * @lb_tests: Efx loopback self-test results structure
281 * @mode: Loopback test mode
282 * @test_index: Starting index of the test
283 * @strings: Ethtool strings, or %NULL
284 * @data: Ethtool test results, or %NULL
285 */
286 static int efx_fill_loopback_test(struct efx_nic *efx,
287 struct efx_loopback_self_tests *lb_tests,
288 enum efx_loopback_mode mode,
289 unsigned int test_index,
290 struct ethtool_string *strings, u64 *data)
291 {
292 struct efx_tx_queue *tx_queue;
293
294 efx_for_each_tx_queue(tx_queue, efx) {
295 efx_fill_test(test_index++, strings, data,
296 &lb_tests->tx_sent[tx_queue->queue],
297 EFX_TX_QUEUE_NAME(tx_queue),
298 EFX_LOOPBACK_NAME(mode, "tx_sent"));
299 efx_fill_test(test_index++, strings, data,
300 &lb_tests->tx_done[tx_queue->queue],
301 EFX_TX_QUEUE_NAME(tx_queue),
302 EFX_LOOPBACK_NAME(mode, "tx_done"));
303 }
304 efx_fill_test(test_index++, strings, data,
305 &lb_tests->rx_good,
306 EFX_PORT_NAME,
307 EFX_LOOPBACK_NAME(mode, "rx_good"));
308 efx_fill_test(test_index++, strings, data,
309 &lb_tests->rx_bad,
310 EFX_PORT_NAME,
311 EFX_LOOPBACK_NAME(mode, "rx_bad"));
312
313 return test_index;
314 }
315
316 /**
317 * efx_ethtool_fill_self_tests - get self-test details
318 * @efx: Efx NIC
319 * @tests: Efx self-test results structure, or %NULL
320 * @strings: Ethtool strings, or %NULL
321 * @data: Ethtool test results, or %NULL
322 */
323 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
324 struct efx_self_tests *tests,
325 struct ethtool_string *strings,
326 u64 *data)
327 {
328 struct efx_channel *channel;
329 unsigned int n = 0;
330 enum efx_loopback_mode mode;
331
332 /* Interrupt */
333 efx_fill_test(n++, strings, data, &tests->interrupt,
334 "core", 0, "interrupt", NULL);
335
336 /* Event queues */
337 efx_for_each_channel(channel, efx) {
338 efx_fill_test(n++, strings, data,
339 &tests->eventq_dma[channel->channel],
340 EFX_CHANNEL_NAME(channel),
341 "eventq.dma", NULL);
342 efx_fill_test(n++, strings, data,
343 &tests->eventq_int[channel->channel],
344 EFX_CHANNEL_NAME(channel),
345 "eventq.int", NULL);
346 efx_fill_test(n++, strings, data,
347 &tests->eventq_poll[channel->channel],
348 EFX_CHANNEL_NAME(channel),
349 "eventq.poll", NULL);
350 }
351
352 /* PHY presence */
353 efx_fill_test(n++, strings, data, &tests->phy_ok,
354 EFX_PORT_NAME, "phy_ok", NULL);
355
356 /* Loopback tests */
357 efx_fill_test(n++, strings, data, &tests->loopback_speed,
358 EFX_PORT_NAME, "loopback.speed", NULL);
359 efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
360 EFX_PORT_NAME, "loopback.full_duplex", NULL);
361 for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
362 if (!(efx->loopback_modes & (1 << mode)))
363 continue;
364 n = efx_fill_loopback_test(efx,
365 &tests->loopback[mode], mode, n,
366 strings, data);
367 }
368
369 return n;
370 }
371
372 static int efx_ethtool_get_stats_count(struct net_device *net_dev)
373 {
374 return EFX_ETHTOOL_NUM_STATS;
375 }
376
377 static int efx_ethtool_self_test_count(struct net_device *net_dev)
378 {
379 struct efx_nic *efx = net_dev->priv;
380
381 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
382 }
383
384 static void efx_ethtool_get_strings(struct net_device *net_dev,
385 u32 string_set, u8 *strings)
386 {
387 struct efx_nic *efx = net_dev->priv;
388 struct ethtool_string *ethtool_strings =
389 (struct ethtool_string *)strings;
390 int i;
391
392 switch (string_set) {
393 case ETH_SS_STATS:
394 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
395 strncpy(ethtool_strings[i].name,
396 efx_ethtool_stats[i].name,
397 sizeof(ethtool_strings[i].name));
398 break;
399 case ETH_SS_TEST:
400 efx_ethtool_fill_self_tests(efx, NULL,
401 ethtool_strings, NULL);
402 break;
403 default:
404 /* No other string sets */
405 break;
406 }
407 }
408
409 static void efx_ethtool_get_stats(struct net_device *net_dev,
410 struct ethtool_stats *stats,
411 u64 *data)
412 {
413 struct efx_nic *efx = net_dev->priv;
414 struct efx_mac_stats *mac_stats = &efx->mac_stats;
415 struct efx_ethtool_stat *stat;
416 struct efx_channel *channel;
417 int i;
418
419 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
420
421 /* Update MAC and NIC statistics */
422 net_dev->get_stats(net_dev);
423
424 /* Fill detailed statistics buffer */
425 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
426 stat = &efx_ethtool_stats[i];
427 switch (stat->source) {
428 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
429 data[i] = stat->get_stat((void *)mac_stats +
430 stat->offset);
431 break;
432 case EFX_ETHTOOL_STAT_SOURCE_nic:
433 data[i] = stat->get_stat((void *)efx + stat->offset);
434 break;
435 case EFX_ETHTOOL_STAT_SOURCE_channel:
436 data[i] = 0;
437 efx_for_each_channel(channel, efx)
438 data[i] += stat->get_stat((void *)channel +
439 stat->offset);
440 break;
441 }
442 }
443 }
444
445 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
446 {
447 int rc;
448
449 /* Our TSO requires TX checksumming, so force TX checksumming
450 * on when TSO is enabled.
451 */
452 if (enable) {
453 rc = efx_ethtool_set_tx_csum(net_dev, 1);
454 if (rc)
455 return rc;
456 }
457
458 return ethtool_op_set_tso(net_dev, enable);
459 }
460
461 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
462 {
463 struct efx_nic *efx = net_dev->priv;
464 int rc;
465
466 rc = ethtool_op_set_tx_csum(net_dev, enable);
467 if (rc)
468 return rc;
469
470 efx_flush_queues(efx);
471
472 /* Our TSO requires TX checksumming, so disable TSO when
473 * checksumming is disabled
474 */
475 if (!enable) {
476 rc = efx_ethtool_set_tso(net_dev, 0);
477 if (rc)
478 return rc;
479 }
480
481 return 0;
482 }
483
484 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
485 {
486 struct efx_nic *efx = net_dev->priv;
487
488 /* No way to stop the hardware doing the checks; we just
489 * ignore the result.
490 */
491 efx->rx_checksum_enabled = (enable ? 1 : 0);
492
493 return 0;
494 }
495
496 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
497 {
498 struct efx_nic *efx = net_dev->priv;
499
500 return efx->rx_checksum_enabled;
501 }
502
503 static void efx_ethtool_self_test(struct net_device *net_dev,
504 struct ethtool_test *test, u64 *data)
505 {
506 struct efx_nic *efx = net_dev->priv;
507 struct efx_self_tests efx_tests;
508 int offline, already_up;
509 int rc;
510
511 ASSERT_RTNL();
512 if (efx->state != STATE_RUNNING) {
513 rc = -EIO;
514 goto fail1;
515 }
516
517 /* We need rx buffers and interrupts. */
518 already_up = (efx->net_dev->flags & IFF_UP);
519 if (!already_up) {
520 rc = dev_open(efx->net_dev);
521 if (rc) {
522 EFX_ERR(efx, "failed opening device.\n");
523 goto fail2;
524 }
525 }
526
527 memset(&efx_tests, 0, sizeof(efx_tests));
528 offline = (test->flags & ETH_TEST_FL_OFFLINE);
529
530 /* Perform online self tests first */
531 rc = efx_online_test(efx, &efx_tests);
532 if (rc)
533 goto out;
534
535 /* Perform offline tests only if online tests passed */
536 if (offline) {
537 /* Stop the kernel from sending packets during the test. */
538 efx_stop_queue(efx);
539 rc = efx_flush_queues(efx);
540 if (!rc)
541 rc = efx_offline_test(efx, &efx_tests,
542 efx->loopback_modes);
543 efx_wake_queue(efx);
544 }
545
546 out:
547 if (!already_up)
548 dev_close(efx->net_dev);
549
550 EFX_LOG(efx, "%s all %sline self-tests\n",
551 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
552
553 fail2:
554 fail1:
555 /* Fill ethtool results structures */
556 efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
557 if (rc)
558 test->flags |= ETH_TEST_FL_FAILED;
559 }
560
561 /* Restart autonegotiation */
562 static int efx_ethtool_nway_reset(struct net_device *net_dev)
563 {
564 struct efx_nic *efx = net_dev->priv;
565
566 return mii_nway_restart(&efx->mii);
567 }
568
569 static u32 efx_ethtool_get_link(struct net_device *net_dev)
570 {
571 struct efx_nic *efx = net_dev->priv;
572
573 return efx->link_up;
574 }
575
576 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
577 struct ethtool_coalesce *coalesce)
578 {
579 struct efx_nic *efx = net_dev->priv;
580 struct efx_tx_queue *tx_queue;
581 struct efx_rx_queue *rx_queue;
582 struct efx_channel *channel;
583
584 memset(coalesce, 0, sizeof(*coalesce));
585
586 /* Find lowest IRQ moderation across all used TX queues */
587 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
588 efx_for_each_tx_queue(tx_queue, efx) {
589 channel = tx_queue->channel;
590 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
591 if (channel->used_flags != EFX_USED_BY_RX_TX)
592 coalesce->tx_coalesce_usecs_irq =
593 channel->irq_moderation;
594 else
595 coalesce->tx_coalesce_usecs_irq = 0;
596 }
597 }
598
599 /* Find lowest IRQ moderation across all used RX queues */
600 coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
601 efx_for_each_rx_queue(rx_queue, efx) {
602 channel = rx_queue->channel;
603 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
604 coalesce->rx_coalesce_usecs_irq =
605 channel->irq_moderation;
606 }
607
608 return 0;
609 }
610
611 /* Set coalescing parameters
612 * The difficulties occur for shared channels
613 */
614 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
615 struct ethtool_coalesce *coalesce)
616 {
617 struct efx_nic *efx = net_dev->priv;
618 struct efx_channel *channel;
619 struct efx_tx_queue *tx_queue;
620 unsigned tx_usecs, rx_usecs;
621
622 if (coalesce->use_adaptive_rx_coalesce ||
623 coalesce->use_adaptive_tx_coalesce)
624 return -EOPNOTSUPP;
625
626 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
627 EFX_ERR(efx, "invalid coalescing setting. "
628 "Only rx/tx_coalesce_usecs_irq are supported\n");
629 return -EOPNOTSUPP;
630 }
631
632 rx_usecs = coalesce->rx_coalesce_usecs_irq;
633 tx_usecs = coalesce->tx_coalesce_usecs_irq;
634
635 /* If the channel is shared only allow RX parameters to be set */
636 efx_for_each_tx_queue(tx_queue, efx) {
637 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
638 tx_usecs) {
639 EFX_ERR(efx, "Channel is shared. "
640 "Only RX coalescing may be set\n");
641 return -EOPNOTSUPP;
642 }
643 }
644
645 efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
646
647 /* Reset channel to pick up new moderation value. Note that
648 * this may change the value of the irq_moderation field
649 * (e.g. to allow for hardware timer granularity).
650 */
651 efx_for_each_channel(channel, efx)
652 falcon_set_int_moderation(channel);
653
654 return 0;
655 }
656
657 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
658 struct ethtool_pauseparam *pause)
659 {
660 struct efx_nic *efx = net_dev->priv;
661 enum efx_fc_type flow_control = efx->flow_control;
662 int rc;
663
664 flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
665 flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
666 flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
667 flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
668
669 /* Try to push the pause parameters */
670 mutex_lock(&efx->mac_lock);
671 rc = falcon_xmac_set_pause(efx, flow_control);
672 mutex_unlock(&efx->mac_lock);
673
674 if (!rc)
675 efx_reconfigure_port(efx);
676
677 return rc;
678 }
679
680 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
681 struct ethtool_pauseparam *pause)
682 {
683 struct efx_nic *efx = net_dev->priv;
684
685 pause->rx_pause = (efx->flow_control & EFX_FC_RX) ? 1 : 0;
686 pause->tx_pause = (efx->flow_control & EFX_FC_TX) ? 1 : 0;
687 pause->autoneg = (efx->flow_control & EFX_FC_AUTO) ? 1 : 0;
688 }
689
690
691 struct ethtool_ops efx_ethtool_ops = {
692 .get_settings = efx_ethtool_get_settings,
693 .set_settings = efx_ethtool_set_settings,
694 .get_drvinfo = efx_ethtool_get_drvinfo,
695 .nway_reset = efx_ethtool_nway_reset,
696 .get_link = efx_ethtool_get_link,
697 .get_coalesce = efx_ethtool_get_coalesce,
698 .set_coalesce = efx_ethtool_set_coalesce,
699 .get_pauseparam = efx_ethtool_get_pauseparam,
700 .set_pauseparam = efx_ethtool_set_pauseparam,
701 .get_rx_csum = efx_ethtool_get_rx_csum,
702 .set_rx_csum = efx_ethtool_set_rx_csum,
703 .get_tx_csum = ethtool_op_get_tx_csum,
704 .set_tx_csum = efx_ethtool_set_tx_csum,
705 .get_sg = ethtool_op_get_sg,
706 .set_sg = ethtool_op_set_sg,
707 .get_tso = ethtool_op_get_tso,
708 .set_tso = efx_ethtool_set_tso,
709 .get_flags = ethtool_op_get_flags,
710 .set_flags = ethtool_op_set_flags,
711 .self_test_count = efx_ethtool_self_test_count,
712 .self_test = efx_ethtool_self_test,
713 .get_strings = efx_ethtool_get_strings,
714 .phys_id = efx_ethtool_phys_id,
715 .get_stats_count = efx_ethtool_get_stats_count,
716 .get_ethtool_stats = efx_ethtool_get_stats,
717 };
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