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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / ethernet / sfc / ethtool.c
blob29b2ebfef19f21d85bb61fca9abfe086b88774b0
1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2010 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
22 struct ethtool_string {
23 char name[ETH_GSTRING_LEN];
24 };
25
26 struct efx_ethtool_stat {
27 const char *name;
28 enum {
29 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
30 EFX_ETHTOOL_STAT_SOURCE_nic,
31 EFX_ETHTOOL_STAT_SOURCE_channel,
32 EFX_ETHTOOL_STAT_SOURCE_tx_queue
33 } source;
34 unsigned offset;
35 u64(*get_stat) (void *field); /* Reader function */
36 };
37
38 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
39 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
40 get_stat_function) { \
41 .name = #stat_name, \
42 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
43 .offset = ((((field_type *) 0) == \
44 &((struct efx_##source_name *)0)->field) ? \
45 offsetof(struct efx_##source_name, field) : \
46 offsetof(struct efx_##source_name, field)), \
47 .get_stat = get_stat_function, \
48 }
49
50 static u64 efx_get_uint_stat(void *field)
51 {
52 return *(unsigned int *)field;
53 }
54
55 static u64 efx_get_ulong_stat(void *field)
56 {
57 return *(unsigned long *)field;
58 }
59
60 static u64 efx_get_u64_stat(void *field)
61 {
62 return *(u64 *) field;
63 }
64
65 static u64 efx_get_atomic_stat(void *field)
66 {
67 return atomic_read((atomic_t *) field);
68 }
69
70 #define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
71 EFX_ETHTOOL_STAT(field, mac_stats, field, \
72 unsigned long, efx_get_ulong_stat)
73
74 #define EFX_ETHTOOL_U64_MAC_STAT(field) \
75 EFX_ETHTOOL_STAT(field, mac_stats, field, \
76 u64, efx_get_u64_stat)
77
78 #define EFX_ETHTOOL_UINT_NIC_STAT(name) \
79 EFX_ETHTOOL_STAT(name, nic, n_##name, \
80 unsigned int, efx_get_uint_stat)
81
82 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
83 EFX_ETHTOOL_STAT(field, nic, field, \
84 atomic_t, efx_get_atomic_stat)
85
86 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
87 EFX_ETHTOOL_STAT(field, channel, n_##field, \
88 unsigned int, efx_get_uint_stat)
89
90 #define EFX_ETHTOOL_UINT_TXQ_STAT(field) \
91 EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \
92 unsigned int, efx_get_uint_stat)
93
94 static struct efx_ethtool_stat efx_ethtool_stats[] = {
95 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
96 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
97 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
98 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
99 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
100 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
101 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
102 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
103 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
104 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
105 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
106 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
107 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
119 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
120 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
121 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
122 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
123 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
124 EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
125 EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
126 EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
127 EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
128 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
129 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
130 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
131 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
132 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
133 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
134 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
135 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
136 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
150 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
151 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
152 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
153 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
154 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
155 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
156 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
157 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
158 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
159 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
160 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
161 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
162 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
163 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
164 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
165 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
166 };
167
168 /* Number of ethtool statistics */
169 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
170
171 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
172
173 /**************************************************************************
174 *
175 * Ethtool operations
176 *
177 **************************************************************************
178 */
179
180 /* Identify device by flashing LEDs */
181 static int efx_ethtool_phys_id(struct net_device *net_dev,
182 enum ethtool_phys_id_state state)
183 {
184 struct efx_nic *efx = netdev_priv(net_dev);
185 enum efx_led_mode mode = EFX_LED_DEFAULT;
186
187 switch (state) {
188 case ETHTOOL_ID_ON:
189 mode = EFX_LED_ON;
190 break;
191 case ETHTOOL_ID_OFF:
192 mode = EFX_LED_OFF;
193 break;
194 case ETHTOOL_ID_INACTIVE:
195 mode = EFX_LED_DEFAULT;
196 break;
197 case ETHTOOL_ID_ACTIVE:
198 return 1; /* cycle on/off once per second */
199 }
200
201 efx->type->set_id_led(efx, mode);
202 return 0;
203 }
204
205 /* This must be called with rtnl_lock held. */
206 static int efx_ethtool_get_settings(struct net_device *net_dev,
207 struct ethtool_cmd *ecmd)
208 {
209 struct efx_nic *efx = netdev_priv(net_dev);
210 struct efx_link_state *link_state = &efx->link_state;
211
212 mutex_lock(&efx->mac_lock);
213 efx->phy_op->get_settings(efx, ecmd);
214 mutex_unlock(&efx->mac_lock);
215
216 /* GMAC does not support 1000Mbps HD */
217 ecmd->supported &= ~SUPPORTED_1000baseT_Half;
218 /* Both MACs support pause frames (bidirectional and respond-only) */
219 ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
220
221 if (LOOPBACK_INTERNAL(efx)) {
222 ethtool_cmd_speed_set(ecmd, link_state->speed);
223 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
224 }
225
226 return 0;
227 }
228
229 /* This must be called with rtnl_lock held. */
230 static int efx_ethtool_set_settings(struct net_device *net_dev,
231 struct ethtool_cmd *ecmd)
232 {
233 struct efx_nic *efx = netdev_priv(net_dev);
234 int rc;
235
236 /* GMAC does not support 1000Mbps HD */
237 if ((ethtool_cmd_speed(ecmd) == SPEED_1000) &&
238 (ecmd->duplex != DUPLEX_FULL)) {
239 netif_dbg(efx, drv, efx->net_dev,
240 "rejecting unsupported 1000Mbps HD setting\n");
241 return -EINVAL;
242 }
243
244 mutex_lock(&efx->mac_lock);
245 rc = efx->phy_op->set_settings(efx, ecmd);
246 mutex_unlock(&efx->mac_lock);
247 return rc;
248 }
249
250 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
251 struct ethtool_drvinfo *info)
252 {
253 struct efx_nic *efx = netdev_priv(net_dev);
254
255 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
256 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
257 if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
258 efx_mcdi_print_fwver(efx, info->fw_version,
259 sizeof(info->fw_version));
260 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
261 }
262
263 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
264 {
265 return efx_nic_get_regs_len(netdev_priv(net_dev));
266 }
267
268 static void efx_ethtool_get_regs(struct net_device *net_dev,
269 struct ethtool_regs *regs, void *buf)
270 {
271 struct efx_nic *efx = netdev_priv(net_dev);
272
273 regs->version = efx->type->revision;
274 efx_nic_get_regs(efx, buf);
275 }
276
277 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
278 {
279 struct efx_nic *efx = netdev_priv(net_dev);
280 return efx->msg_enable;
281 }
282
283 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
284 {
285 struct efx_nic *efx = netdev_priv(net_dev);
286 efx->msg_enable = msg_enable;
287 }
288
289 /**
290 * efx_fill_test - fill in an individual self-test entry
291 * @test_index: Index of the test
292 * @strings: Ethtool strings, or %NULL
293 * @data: Ethtool test results, or %NULL
294 * @test: Pointer to test result (used only if data != %NULL)
295 * @unit_format: Unit name format (e.g. "chan\%d")
296 * @unit_id: Unit id (e.g. 0 for "chan0")
297 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
298 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
299 *
300 * Fill in an individual self-test entry.
301 */
302 static void efx_fill_test(unsigned int test_index,
303 struct ethtool_string *strings, u64 *data,
304 int *test, const char *unit_format, int unit_id,
305 const char *test_format, const char *test_id)
306 {
307 struct ethtool_string unit_str, test_str;
308
309 /* Fill data value, if applicable */
310 if (data)
311 data[test_index] = *test;
312
313 /* Fill string, if applicable */
314 if (strings) {
315 if (strchr(unit_format, '%'))
316 snprintf(unit_str.name, sizeof(unit_str.name),
317 unit_format, unit_id);
318 else
319 strcpy(unit_str.name, unit_format);
320 snprintf(test_str.name, sizeof(test_str.name),
321 test_format, test_id);
322 snprintf(strings[test_index].name,
323 sizeof(strings[test_index].name),
324 "%-6s %-24s", unit_str.name, test_str.name);
325 }
326 }
327
328 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
329 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
330 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
331 #define EFX_LOOPBACK_NAME(_mode, _counter) \
332 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
333
334 /**
335 * efx_fill_loopback_test - fill in a block of loopback self-test entries
336 * @efx: Efx NIC
337 * @lb_tests: Efx loopback self-test results structure
338 * @mode: Loopback test mode
339 * @test_index: Starting index of the test
340 * @strings: Ethtool strings, or %NULL
341 * @data: Ethtool test results, or %NULL
342 */
343 static int efx_fill_loopback_test(struct efx_nic *efx,
344 struct efx_loopback_self_tests *lb_tests,
345 enum efx_loopback_mode mode,
346 unsigned int test_index,
347 struct ethtool_string *strings, u64 *data)
348 {
349 struct efx_channel *channel = efx_get_channel(efx, 0);
350 struct efx_tx_queue *tx_queue;
351
352 efx_for_each_channel_tx_queue(tx_queue, channel) {
353 efx_fill_test(test_index++, strings, data,
354 &lb_tests->tx_sent[tx_queue->queue],
355 EFX_TX_QUEUE_NAME(tx_queue),
356 EFX_LOOPBACK_NAME(mode, "tx_sent"));
357 efx_fill_test(test_index++, strings, data,
358 &lb_tests->tx_done[tx_queue->queue],
359 EFX_TX_QUEUE_NAME(tx_queue),
360 EFX_LOOPBACK_NAME(mode, "tx_done"));
361 }
362 efx_fill_test(test_index++, strings, data,
363 &lb_tests->rx_good,
364 "rx", 0,
365 EFX_LOOPBACK_NAME(mode, "rx_good"));
366 efx_fill_test(test_index++, strings, data,
367 &lb_tests->rx_bad,
368 "rx", 0,
369 EFX_LOOPBACK_NAME(mode, "rx_bad"));
370
371 return test_index;
372 }
373
374 /**
375 * efx_ethtool_fill_self_tests - get self-test details
376 * @efx: Efx NIC
377 * @tests: Efx self-test results structure, or %NULL
378 * @strings: Ethtool strings, or %NULL
379 * @data: Ethtool test results, or %NULL
380 */
381 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
382 struct efx_self_tests *tests,
383 struct ethtool_string *strings,
384 u64 *data)
385 {
386 struct efx_channel *channel;
387 unsigned int n = 0, i;
388 enum efx_loopback_mode mode;
389
390 efx_fill_test(n++, strings, data, &tests->phy_alive,
391 "phy", 0, "alive", NULL);
392 efx_fill_test(n++, strings, data, &tests->nvram,
393 "core", 0, "nvram", NULL);
394 efx_fill_test(n++, strings, data, &tests->interrupt,
395 "core", 0, "interrupt", NULL);
396
397 /* Event queues */
398 efx_for_each_channel(channel, efx) {
399 efx_fill_test(n++, strings, data,
400 &tests->eventq_dma[channel->channel],
401 EFX_CHANNEL_NAME(channel),
402 "eventq.dma", NULL);
403 efx_fill_test(n++, strings, data,
404 &tests->eventq_int[channel->channel],
405 EFX_CHANNEL_NAME(channel),
406 "eventq.int", NULL);
407 efx_fill_test(n++, strings, data,
408 &tests->eventq_poll[channel->channel],
409 EFX_CHANNEL_NAME(channel),
410 "eventq.poll", NULL);
411 }
412
413 efx_fill_test(n++, strings, data, &tests->registers,
414 "core", 0, "registers", NULL);
415
416 if (efx->phy_op->run_tests != NULL) {
417 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
418
419 for (i = 0; true; ++i) {
420 const char *name;
421
422 EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
423 name = efx->phy_op->test_name(efx, i);
424 if (name == NULL)
425 break;
426
427 efx_fill_test(n++, strings, data, &tests->phy_ext[i],
428 "phy", 0, name, NULL);
429 }
430 }
431
432 /* Loopback tests */
433 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
434 if (!(efx->loopback_modes & (1 << mode)))
435 continue;
436 n = efx_fill_loopback_test(efx,
437 &tests->loopback[mode], mode, n,
438 strings, data);
439 }
440
441 return n;
442 }
443
444 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
445 int string_set)
446 {
447 switch (string_set) {
448 case ETH_SS_STATS:
449 return EFX_ETHTOOL_NUM_STATS;
450 case ETH_SS_TEST:
451 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
452 NULL, NULL, NULL);
453 default:
454 return -EINVAL;
455 }
456 }
457
458 static void efx_ethtool_get_strings(struct net_device *net_dev,
459 u32 string_set, u8 *strings)
460 {
461 struct efx_nic *efx = netdev_priv(net_dev);
462 struct ethtool_string *ethtool_strings =
463 (struct ethtool_string *)strings;
464 int i;
465
466 switch (string_set) {
467 case ETH_SS_STATS:
468 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
469 strncpy(ethtool_strings[i].name,
470 efx_ethtool_stats[i].name,
471 sizeof(ethtool_strings[i].name));
472 break;
473 case ETH_SS_TEST:
474 efx_ethtool_fill_self_tests(efx, NULL,
475 ethtool_strings, NULL);
476 break;
477 default:
478 /* No other string sets */
479 break;
480 }
481 }
482
483 static void efx_ethtool_get_stats(struct net_device *net_dev,
484 struct ethtool_stats *stats,
485 u64 *data)
486 {
487 struct efx_nic *efx = netdev_priv(net_dev);
488 struct efx_mac_stats *mac_stats = &efx->mac_stats;
489 struct efx_ethtool_stat *stat;
490 struct efx_channel *channel;
491 struct efx_tx_queue *tx_queue;
492 struct rtnl_link_stats64 temp;
493 int i;
494
495 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
496
497 /* Update MAC and NIC statistics */
498 dev_get_stats(net_dev, &temp);
499
500 /* Fill detailed statistics buffer */
501 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
502 stat = &efx_ethtool_stats[i];
503 switch (stat->source) {
504 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
505 data[i] = stat->get_stat((void *)mac_stats +
506 stat->offset);
507 break;
508 case EFX_ETHTOOL_STAT_SOURCE_nic:
509 data[i] = stat->get_stat((void *)efx + stat->offset);
510 break;
511 case EFX_ETHTOOL_STAT_SOURCE_channel:
512 data[i] = 0;
513 efx_for_each_channel(channel, efx)
514 data[i] += stat->get_stat((void *)channel +
515 stat->offset);
516 break;
517 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
518 data[i] = 0;
519 efx_for_each_channel(channel, efx) {
520 efx_for_each_channel_tx_queue(tx_queue, channel)
521 data[i] +=
522 stat->get_stat((void *)tx_queue
523 + stat->offset);
524 }
525 break;
526 }
527 }
528 }
529
530 static void efx_ethtool_self_test(struct net_device *net_dev,
531 struct ethtool_test *test, u64 *data)
532 {
533 struct efx_nic *efx = netdev_priv(net_dev);
534 struct efx_self_tests *efx_tests;
535 int already_up;
536 int rc = -ENOMEM;
537
538 efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
539 if (!efx_tests)
540 goto fail;
541
542
543 ASSERT_RTNL();
544 if (efx->state != STATE_RUNNING) {
545 rc = -EIO;
546 goto fail1;
547 }
548
549 netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
550 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
551
552 /* We need rx buffers and interrupts. */
553 already_up = (efx->net_dev->flags & IFF_UP);
554 if (!already_up) {
555 rc = dev_open(efx->net_dev);
556 if (rc) {
557 netif_err(efx, drv, efx->net_dev,
558 "failed opening device.\n");
559 goto fail1;
560 }
561 }
562
563 rc = efx_selftest(efx, efx_tests, test->flags);
564
565 if (!already_up)
566 dev_close(efx->net_dev);
567
568 netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
569 rc == 0 ? "passed" : "failed",
570 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
571
572 fail1:
573 /* Fill ethtool results structures */
574 efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
575 kfree(efx_tests);
576 fail:
577 if (rc)
578 test->flags |= ETH_TEST_FL_FAILED;
579 }
580
581 /* Restart autonegotiation */
582 static int efx_ethtool_nway_reset(struct net_device *net_dev)
583 {
584 struct efx_nic *efx = netdev_priv(net_dev);
585
586 return mdio45_nway_restart(&efx->mdio);
587 }
588
589 /*
590 * Each channel has a single IRQ and moderation timer, started by any
591 * completion (or other event). Unless the module parameter
592 * separate_tx_channels is set, IRQs and moderation are therefore
593 * shared between RX and TX completions. In this case, when RX IRQ
594 * moderation is explicitly changed then TX IRQ moderation is
595 * automatically changed too, but otherwise we fail if the two values
596 * are requested to be different.
597 *
598 * The hardware does not support a limit on the number of completions
599 * before an IRQ, so we do not use the max_frames fields. We should
600 * report and require that max_frames == (usecs != 0), but this would
601 * invalidate existing user documentation.
602 *
603 * The hardware does not have distinct settings for interrupt
604 * moderation while the previous IRQ is being handled, so we should
605 * not use the 'irq' fields. However, an earlier developer
606 * misunderstood the meaning of the 'irq' fields and the driver did
607 * not support the standard fields. To avoid invalidating existing
608 * user documentation, we report and accept changes through either the
609 * standard or 'irq' fields. If both are changed at the same time, we
610 * prefer the standard field.
611 *
612 * We implement adaptive IRQ moderation, but use a different algorithm
613 * from that assumed in the definition of struct ethtool_coalesce.
614 * Therefore we do not use any of the adaptive moderation parameters
615 * in it.
616 */
617
618 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
619 struct ethtool_coalesce *coalesce)
620 {
621 struct efx_nic *efx = netdev_priv(net_dev);
622 unsigned int tx_usecs, rx_usecs;
623 bool rx_adaptive;
624
625 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
626
627 coalesce->tx_coalesce_usecs = tx_usecs;
628 coalesce->tx_coalesce_usecs_irq = tx_usecs;
629 coalesce->rx_coalesce_usecs = rx_usecs;
630 coalesce->rx_coalesce_usecs_irq = rx_usecs;
631 coalesce->use_adaptive_rx_coalesce = rx_adaptive;
632
633 return 0;
634 }
635
636 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
637 struct ethtool_coalesce *coalesce)
638 {
639 struct efx_nic *efx = netdev_priv(net_dev);
640 struct efx_channel *channel;
641 unsigned int tx_usecs, rx_usecs;
642 bool adaptive, rx_may_override_tx;
643 int rc;
644
645 if (coalesce->use_adaptive_tx_coalesce)
646 return -EINVAL;
647
648 efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
649
650 if (coalesce->rx_coalesce_usecs != rx_usecs)
651 rx_usecs = coalesce->rx_coalesce_usecs;
652 else
653 rx_usecs = coalesce->rx_coalesce_usecs_irq;
654
655 adaptive = coalesce->use_adaptive_rx_coalesce;
656
657 /* If channels are shared, TX IRQ moderation can be quietly
658 * overridden unless it is changed from its old value.
659 */
660 rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
661 coalesce->tx_coalesce_usecs_irq == tx_usecs);
662 if (coalesce->tx_coalesce_usecs != tx_usecs)
663 tx_usecs = coalesce->tx_coalesce_usecs;
664 else
665 tx_usecs = coalesce->tx_coalesce_usecs_irq;
666
667 rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
668 rx_may_override_tx);
669 if (rc != 0)
670 return rc;
671
672 efx_for_each_channel(channel, efx)
673 efx->type->push_irq_moderation(channel);
674
675 return 0;
676 }
677
678 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
679 struct ethtool_ringparam *ring)
680 {
681 struct efx_nic *efx = netdev_priv(net_dev);
682
683 ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
684 ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
685 ring->rx_pending = efx->rxq_entries;
686 ring->tx_pending = efx->txq_entries;
687 }
688
689 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
690 struct ethtool_ringparam *ring)
691 {
692 struct efx_nic *efx = netdev_priv(net_dev);
693
694 if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
695 ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
696 ring->tx_pending > EFX_MAX_DMAQ_SIZE)
697 return -EINVAL;
698
699 if (ring->rx_pending < EFX_MIN_RING_SIZE ||
700 ring->tx_pending < EFX_MIN_RING_SIZE) {
701 netif_err(efx, drv, efx->net_dev,
702 "TX and RX queues cannot be smaller than %ld\n",
703 EFX_MIN_RING_SIZE);
704 return -EINVAL;
705 }
706
707 return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
708 }
709
710 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
711 struct ethtool_pauseparam *pause)
712 {
713 struct efx_nic *efx = netdev_priv(net_dev);
714 u8 wanted_fc, old_fc;
715 u32 old_adv;
716 bool reset;
717 int rc = 0;
718
719 mutex_lock(&efx->mac_lock);
720
721 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
722 (pause->tx_pause ? EFX_FC_TX : 0) |
723 (pause->autoneg ? EFX_FC_AUTO : 0));
724
725 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
726 netif_dbg(efx, drv, efx->net_dev,
727 "Flow control unsupported: tx ON rx OFF\n");
728 rc = -EINVAL;
729 goto out;
730 }
731
732 if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
733 netif_dbg(efx, drv, efx->net_dev,
734 "Autonegotiation is disabled\n");
735 rc = -EINVAL;
736 goto out;
737 }
738
739 /* TX flow control may automatically turn itself off if the
740 * link partner (intermittently) stops responding to pause
741 * frames. There isn't any indication that this has happened,
742 * so the best we do is leave it up to the user to spot this
743 * and fix it be cycling transmit flow control on this end. */
744 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
745 if (EFX_WORKAROUND_11482(efx) && reset) {
746 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
747 /* Recover by resetting the EM block */
748 falcon_stop_nic_stats(efx);
749 falcon_drain_tx_fifo(efx);
750 efx->mac_op->reconfigure(efx);
751 falcon_start_nic_stats(efx);
752 } else {
753 /* Schedule a reset to recover */
754 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
755 }
756 }
757
758 old_adv = efx->link_advertising;
759 old_fc = efx->wanted_fc;
760 efx_link_set_wanted_fc(efx, wanted_fc);
761 if (efx->link_advertising != old_adv ||
762 (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
763 rc = efx->phy_op->reconfigure(efx);
764 if (rc) {
765 netif_err(efx, drv, efx->net_dev,
766 "Unable to advertise requested flow "
767 "control setting\n");
768 goto out;
769 }
770 }
771
772 /* Reconfigure the MAC. The PHY *may* generate a link state change event
773 * if the user just changed the advertised capabilities, but there's no
774 * harm doing this twice */
775 efx->mac_op->reconfigure(efx);
776
777 out:
778 mutex_unlock(&efx->mac_lock);
779
780 return rc;
781 }
782
783 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
784 struct ethtool_pauseparam *pause)
785 {
786 struct efx_nic *efx = netdev_priv(net_dev);
787
788 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
789 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
790 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
791 }
792
793
794 static void efx_ethtool_get_wol(struct net_device *net_dev,
795 struct ethtool_wolinfo *wol)
796 {
797 struct efx_nic *efx = netdev_priv(net_dev);
798 return efx->type->get_wol(efx, wol);
799 }
800
801
802 static int efx_ethtool_set_wol(struct net_device *net_dev,
803 struct ethtool_wolinfo *wol)
804 {
805 struct efx_nic *efx = netdev_priv(net_dev);
806 return efx->type->set_wol(efx, wol->wolopts);
807 }
808
809 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
810 {
811 struct efx_nic *efx = netdev_priv(net_dev);
812 int rc;
813
814 rc = efx->type->map_reset_flags(flags);
815 if (rc < 0)
816 return rc;
817
818 return efx_reset(efx, rc);
819 }
820
821 static int efx_ethtool_get_class_rule(struct efx_nic *efx,
822 struct ethtool_rx_flow_spec *rule)
823 {
824 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
825 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
826 struct efx_filter_spec spec;
827 u16 vid;
828 u8 proto;
829 int rc;
830
831 rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL,
832 rule->location, &spec);
833 if (rc)
834 return rc;
835
836 if (spec.dmaq_id == 0xfff)
837 rule->ring_cookie = RX_CLS_FLOW_DISC;
838 else
839 rule->ring_cookie = spec.dmaq_id;
840
841 rc = efx_filter_get_eth_local(&spec, &vid,
842 rule->h_u.ether_spec.h_dest);
843 if (rc == 0) {
844 rule->flow_type = ETHER_FLOW;
845 memset(rule->m_u.ether_spec.h_dest, ~0, ETH_ALEN);
846 if (vid != EFX_FILTER_VID_UNSPEC) {
847 rule->flow_type |= FLOW_EXT;
848 rule->h_ext.vlan_tci = htons(vid);
849 rule->m_ext.vlan_tci = htons(0xfff);
850 }
851 return 0;
852 }
853
854 rc = efx_filter_get_ipv4_local(&spec, &proto,
855 &ip_entry->ip4dst, &ip_entry->pdst);
856 if (rc != 0) {
857 rc = efx_filter_get_ipv4_full(
858 &spec, &proto, &ip_entry->ip4src, &ip_entry->psrc,
859 &ip_entry->ip4dst, &ip_entry->pdst);
860 EFX_WARN_ON_PARANOID(rc);
861 ip_mask->ip4src = ~0;
862 ip_mask->psrc = ~0;
863 }
864 rule->flow_type = (proto == IPPROTO_TCP) ? TCP_V4_FLOW : UDP_V4_FLOW;
865 ip_mask->ip4dst = ~0;
866 ip_mask->pdst = ~0;
867 return rc;
868 }
869
870 static int
871 efx_ethtool_get_rxnfc(struct net_device *net_dev,
872 struct ethtool_rxnfc *info, u32 *rule_locs)
873 {
874 struct efx_nic *efx = netdev_priv(net_dev);
875
876 switch (info->cmd) {
877 case ETHTOOL_GRXRINGS:
878 info->data = efx->n_rx_channels;
879 return 0;
880
881 case ETHTOOL_GRXFH: {
882 unsigned min_revision = 0;
883
884 info->data = 0;
885 switch (info->flow_type) {
886 case TCP_V4_FLOW:
887 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
888 /* fall through */
889 case UDP_V4_FLOW:
890 case SCTP_V4_FLOW:
891 case AH_ESP_V4_FLOW:
892 case IPV4_FLOW:
893 info->data |= RXH_IP_SRC | RXH_IP_DST;
894 min_revision = EFX_REV_FALCON_B0;
895 break;
896 case TCP_V6_FLOW:
897 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
898 /* fall through */
899 case UDP_V6_FLOW:
900 case SCTP_V6_FLOW:
901 case AH_ESP_V6_FLOW:
902 case IPV6_FLOW:
903 info->data |= RXH_IP_SRC | RXH_IP_DST;
904 min_revision = EFX_REV_SIENA_A0;
905 break;
906 default:
907 break;
908 }
909 if (efx_nic_rev(efx) < min_revision)
910 info->data = 0;
911 return 0;
912 }
913
914 case ETHTOOL_GRXCLSRLCNT:
915 info->data = efx_filter_get_rx_id_limit(efx);
916 if (info->data == 0)
917 return -EOPNOTSUPP;
918 info->data |= RX_CLS_LOC_SPECIAL;
919 info->rule_cnt =
920 efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL);
921 return 0;
922
923 case ETHTOOL_GRXCLSRULE:
924 if (efx_filter_get_rx_id_limit(efx) == 0)
925 return -EOPNOTSUPP;
926 return efx_ethtool_get_class_rule(efx, &info->fs);
927
928 case ETHTOOL_GRXCLSRLALL: {
929 s32 rc;
930 info->data = efx_filter_get_rx_id_limit(efx);
931 if (info->data == 0)
932 return -EOPNOTSUPP;
933 rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL,
934 rule_locs, info->rule_cnt);
935 if (rc < 0)
936 return rc;
937 info->rule_cnt = rc;
938 return 0;
939 }
940
941 default:
942 return -EOPNOTSUPP;
943 }
944 }
945
946 static int efx_ethtool_set_class_rule(struct efx_nic *efx,
947 struct ethtool_rx_flow_spec *rule)
948 {
949 struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
950 struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
951 struct ethhdr *mac_entry = &rule->h_u.ether_spec;
952 struct ethhdr *mac_mask = &rule->m_u.ether_spec;
953 struct efx_filter_spec spec;
954 int rc;
955
956 /* Check that user wants us to choose the location */
957 if (rule->location != RX_CLS_LOC_ANY &&
958 rule->location != RX_CLS_LOC_FIRST &&
959 rule->location != RX_CLS_LOC_LAST)
960 return -EINVAL;
961
962 /* Range-check ring_cookie */
963 if (rule->ring_cookie >= efx->n_rx_channels &&
964 rule->ring_cookie != RX_CLS_FLOW_DISC)
965 return -EINVAL;
966
967 /* Check for unsupported extensions */
968 if ((rule->flow_type & FLOW_EXT) &&
969 (rule->m_ext.vlan_etype | rule->m_ext.data[0] |
970 rule->m_ext.data[1]))
971 return -EINVAL;
972
973 efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL,
974 (rule->location == RX_CLS_LOC_FIRST) ?
975 EFX_FILTER_FLAG_RX_OVERRIDE_IP : 0,
976 (rule->ring_cookie == RX_CLS_FLOW_DISC) ?
977 0xfff : rule->ring_cookie);
978
979 switch (rule->flow_type) {
980 case TCP_V4_FLOW:
981 case UDP_V4_FLOW: {
982 u8 proto = (rule->flow_type == TCP_V4_FLOW ?
983 IPPROTO_TCP : IPPROTO_UDP);
984
985 /* Must match all of destination, */
986 if ((__force u32)~ip_mask->ip4dst |
987 (__force u16)~ip_mask->pdst)
988 return -EINVAL;
989 /* all or none of source, */
990 if ((ip_mask->ip4src | ip_mask->psrc) &&
991 ((__force u32)~ip_mask->ip4src |
992 (__force u16)~ip_mask->psrc))
993 return -EINVAL;
994 /* and nothing else */
995 if (ip_mask->tos | rule->m_ext.vlan_tci)
996 return -EINVAL;
997
998 if (ip_mask->ip4src)
999 rc = efx_filter_set_ipv4_full(&spec, proto,
1000 ip_entry->ip4dst,
1001 ip_entry->pdst,
1002 ip_entry->ip4src,
1003 ip_entry->psrc);
1004 else
1005 rc = efx_filter_set_ipv4_local(&spec, proto,
1006 ip_entry->ip4dst,
1007 ip_entry->pdst);
1008 if (rc)
1009 return rc;
1010 break;
1011 }
1012
1013 case ETHER_FLOW | FLOW_EXT:
1014 /* Must match all or none of VID */
1015 if (rule->m_ext.vlan_tci != htons(0xfff) &&
1016 rule->m_ext.vlan_tci != 0)
1017 return -EINVAL;
1018 case ETHER_FLOW:
1019 /* Must match all of destination */
1020 if (!is_broadcast_ether_addr(mac_mask->h_dest))
1021 return -EINVAL;
1022 /* and nothing else */
1023 if (!is_zero_ether_addr(mac_mask->h_source) ||
1024 mac_mask->h_proto)
1025 return -EINVAL;
1026
1027 rc = efx_filter_set_eth_local(
1028 &spec,
1029 (rule->flow_type & FLOW_EXT && rule->m_ext.vlan_tci) ?
1030 ntohs(rule->h_ext.vlan_tci) : EFX_FILTER_VID_UNSPEC,
1031 mac_entry->h_dest);
1032 if (rc)
1033 return rc;
1034 break;
1035
1036 default:
1037 return -EINVAL;
1038 }
1039
1040 rc = efx_filter_insert_filter(efx, &spec, true);
1041 if (rc < 0)
1042 return rc;
1043
1044 rule->location = rc;
1045 return 0;
1046 }
1047
1048 static int efx_ethtool_set_rxnfc(struct net_device *net_dev,
1049 struct ethtool_rxnfc *info)
1050 {
1051 struct efx_nic *efx = netdev_priv(net_dev);
1052
1053 if (efx_filter_get_rx_id_limit(efx) == 0)
1054 return -EOPNOTSUPP;
1055
1056 switch (info->cmd) {
1057 case ETHTOOL_SRXCLSRLINS:
1058 return efx_ethtool_set_class_rule(efx, &info->fs);
1059
1060 case ETHTOOL_SRXCLSRLDEL:
1061 return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL,
1062 info->fs.location);
1063
1064 default:
1065 return -EOPNOTSUPP;
1066 }
1067 }
1068
1069 static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
1070 {
1071 struct efx_nic *efx = netdev_priv(net_dev);
1072
1073 return (efx_nic_rev(efx) < EFX_REV_FALCON_B0 ?
1074 0 : ARRAY_SIZE(efx->rx_indir_table));
1075 }
1076
1077 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev, u32 *indir)
1078 {
1079 struct efx_nic *efx = netdev_priv(net_dev);
1080
1081 memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
1082 return 0;
1083 }
1084
1085 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
1086 const u32 *indir)
1087 {
1088 struct efx_nic *efx = netdev_priv(net_dev);
1089
1090 memcpy(efx->rx_indir_table, indir, sizeof(efx->rx_indir_table));
1091 efx_nic_push_rx_indir_table(efx);
1092 return 0;
1093 }
1094
1095 const struct ethtool_ops efx_ethtool_ops = {
1096 .get_settings = efx_ethtool_get_settings,
1097 .set_settings = efx_ethtool_set_settings,
1098 .get_drvinfo = efx_ethtool_get_drvinfo,
1099 .get_regs_len = efx_ethtool_get_regs_len,
1100 .get_regs = efx_ethtool_get_regs,
1101 .get_msglevel = efx_ethtool_get_msglevel,
1102 .set_msglevel = efx_ethtool_set_msglevel,
1103 .nway_reset = efx_ethtool_nway_reset,
1104 .get_link = ethtool_op_get_link,
1105 .get_coalesce = efx_ethtool_get_coalesce,
1106 .set_coalesce = efx_ethtool_set_coalesce,
1107 .get_ringparam = efx_ethtool_get_ringparam,
1108 .set_ringparam = efx_ethtool_set_ringparam,
1109 .get_pauseparam = efx_ethtool_get_pauseparam,
1110 .set_pauseparam = efx_ethtool_set_pauseparam,
1111 .get_sset_count = efx_ethtool_get_sset_count,
1112 .self_test = efx_ethtool_self_test,
1113 .get_strings = efx_ethtool_get_strings,
1114 .set_phys_id = efx_ethtool_phys_id,
1115 .get_ethtool_stats = efx_ethtool_get_stats,
1116 .get_wol = efx_ethtool_get_wol,
1117 .set_wol = efx_ethtool_set_wol,
1118 .reset = efx_ethtool_reset,
1119 .get_rxnfc = efx_ethtool_get_rxnfc,
1120 .set_rxnfc = efx_ethtool_set_rxnfc,
1121 .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size,
1122 .get_rxfh_indir = efx_ethtool_get_rxfh_indir,
1123 .set_rxfh_indir = efx_ethtool_set_rxfh_indir,
1124 };