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sfc: lower stack usage in efx_ethtool_self_test
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / sfc / ethtool.c
blobca886d98bdc78e6b5a2a618ee7afb6ee271b329e
1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2009 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 } source;
33 unsigned offset;
34 u64(*get_stat) (void *field); /* Reader function */
35 };
36
37 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
38 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
39 get_stat_function) { \
40 .name = #stat_name, \
41 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \
42 .offset = ((((field_type *) 0) == \
43 &((struct efx_##source_name *)0)->field) ? \
44 offsetof(struct efx_##source_name, field) : \
45 offsetof(struct efx_##source_name, field)), \
46 .get_stat = get_stat_function, \
47 }
48
49 static u64 efx_get_uint_stat(void *field)
50 {
51 return *(unsigned int *)field;
52 }
53
54 static u64 efx_get_ulong_stat(void *field)
55 {
56 return *(unsigned long *)field;
57 }
58
59 static u64 efx_get_u64_stat(void *field)
60 {
61 return *(u64 *) field;
62 }
63
64 static u64 efx_get_atomic_stat(void *field)
65 {
66 return atomic_read((atomic_t *) field);
67 }
68
69 #define EFX_ETHTOOL_ULONG_MAC_STAT(field) \
70 EFX_ETHTOOL_STAT(field, mac_stats, field, \
71 unsigned long, efx_get_ulong_stat)
72
73 #define EFX_ETHTOOL_U64_MAC_STAT(field) \
74 EFX_ETHTOOL_STAT(field, mac_stats, field, \
75 u64, efx_get_u64_stat)
76
77 #define EFX_ETHTOOL_UINT_NIC_STAT(name) \
78 EFX_ETHTOOL_STAT(name, nic, n_##name, \
79 unsigned int, efx_get_uint_stat)
80
81 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \
82 EFX_ETHTOOL_STAT(field, nic, field, \
83 atomic_t, efx_get_atomic_stat)
84
85 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
86 EFX_ETHTOOL_STAT(field, channel, n_##field, \
87 unsigned int, efx_get_uint_stat)
88
89 static struct efx_ethtool_stat efx_ethtool_stats[] = {
90 EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
91 EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
92 EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
93 EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
94 EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
95 EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
96 EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
97 EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
98 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
99 EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
100 EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
101 EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
102 EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
103 EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
104 EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
105 EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
106 EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
107 EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
108 EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
109 EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
110 EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
111 EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
112 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
113 EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
114 EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
115 EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
116 EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
117 EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
118 EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
119 EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
120 EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
121 EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
122 EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
123 EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
124 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
125 EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
126 EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
127 EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
128 EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
129 EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
130 EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
131 EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
132 EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
133 EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
134 EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
135 EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
136 EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
137 EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
138 EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
139 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
140 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
141 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
142 EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
143 EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
144 EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
145 EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
146 EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
147 EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
148 EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
149 EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
150 EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
151 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
152 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
153 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
154 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
155 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
156 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
157 };
158
159 /* Number of ethtool statistics */
160 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
161
162 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
163
164 /**************************************************************************
165 *
166 * Ethtool operations
167 *
168 **************************************************************************
169 */
170
171 /* Identify device by flashing LEDs */
172 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
173 {
174 struct efx_nic *efx = netdev_priv(net_dev);
175
176 do {
177 efx->type->set_id_led(efx, EFX_LED_ON);
178 schedule_timeout_interruptible(HZ / 2);
179
180 efx->type->set_id_led(efx, EFX_LED_OFF);
181 schedule_timeout_interruptible(HZ / 2);
182 } while (!signal_pending(current) && --count != 0);
183
184 efx->type->set_id_led(efx, EFX_LED_DEFAULT);
185 return 0;
186 }
187
188 /* This must be called with rtnl_lock held. */
189 static int efx_ethtool_get_settings(struct net_device *net_dev,
190 struct ethtool_cmd *ecmd)
191 {
192 struct efx_nic *efx = netdev_priv(net_dev);
193 struct efx_link_state *link_state = &efx->link_state;
194
195 mutex_lock(&efx->mac_lock);
196 efx->phy_op->get_settings(efx, ecmd);
197 mutex_unlock(&efx->mac_lock);
198
199 /* GMAC does not support 1000Mbps HD */
200 ecmd->supported &= ~SUPPORTED_1000baseT_Half;
201 /* Both MACs support pause frames (bidirectional and respond-only) */
202 ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
203
204 if (LOOPBACK_INTERNAL(efx)) {
205 ecmd->speed = link_state->speed;
206 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
207 }
208
209 return 0;
210 }
211
212 /* This must be called with rtnl_lock held. */
213 static int efx_ethtool_set_settings(struct net_device *net_dev,
214 struct ethtool_cmd *ecmd)
215 {
216 struct efx_nic *efx = netdev_priv(net_dev);
217 int rc;
218
219 /* GMAC does not support 1000Mbps HD */
220 if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
221 netif_dbg(efx, drv, efx->net_dev,
222 "rejecting unsupported 1000Mbps HD setting\n");
223 return -EINVAL;
224 }
225
226 mutex_lock(&efx->mac_lock);
227 rc = efx->phy_op->set_settings(efx, ecmd);
228 mutex_unlock(&efx->mac_lock);
229 return rc;
230 }
231
232 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
233 struct ethtool_drvinfo *info)
234 {
235 struct efx_nic *efx = netdev_priv(net_dev);
236
237 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
238 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
239 if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
240 siena_print_fwver(efx, info->fw_version,
241 sizeof(info->fw_version));
242 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
243 }
244
245 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
246 {
247 return efx_nic_get_regs_len(netdev_priv(net_dev));
248 }
249
250 static void efx_ethtool_get_regs(struct net_device *net_dev,
251 struct ethtool_regs *regs, void *buf)
252 {
253 struct efx_nic *efx = netdev_priv(net_dev);
254
255 regs->version = efx->type->revision;
256 efx_nic_get_regs(efx, buf);
257 }
258
259 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
260 {
261 struct efx_nic *efx = netdev_priv(net_dev);
262 return efx->msg_enable;
263 }
264
265 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
266 {
267 struct efx_nic *efx = netdev_priv(net_dev);
268 efx->msg_enable = msg_enable;
269 }
270
271 /**
272 * efx_fill_test - fill in an individual self-test entry
273 * @test_index: Index of the test
274 * @strings: Ethtool strings, or %NULL
275 * @data: Ethtool test results, or %NULL
276 * @test: Pointer to test result (used only if data != %NULL)
277 * @unit_format: Unit name format (e.g. "chan\%d")
278 * @unit_id: Unit id (e.g. 0 for "chan0")
279 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
280 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
281 *
282 * Fill in an individual self-test entry.
283 */
284 static void efx_fill_test(unsigned int test_index,
285 struct ethtool_string *strings, u64 *data,
286 int *test, const char *unit_format, int unit_id,
287 const char *test_format, const char *test_id)
288 {
289 struct ethtool_string unit_str, test_str;
290
291 /* Fill data value, if applicable */
292 if (data)
293 data[test_index] = *test;
294
295 /* Fill string, if applicable */
296 if (strings) {
297 if (strchr(unit_format, '%'))
298 snprintf(unit_str.name, sizeof(unit_str.name),
299 unit_format, unit_id);
300 else
301 strcpy(unit_str.name, unit_format);
302 snprintf(test_str.name, sizeof(test_str.name),
303 test_format, test_id);
304 snprintf(strings[test_index].name,
305 sizeof(strings[test_index].name),
306 "%-6s %-24s", unit_str.name, test_str.name);
307 }
308 }
309
310 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
311 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
312 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
313 #define EFX_LOOPBACK_NAME(_mode, _counter) \
314 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
315
316 /**
317 * efx_fill_loopback_test - fill in a block of loopback self-test entries
318 * @efx: Efx NIC
319 * @lb_tests: Efx loopback self-test results structure
320 * @mode: Loopback test mode
321 * @test_index: Starting index of the test
322 * @strings: Ethtool strings, or %NULL
323 * @data: Ethtool test results, or %NULL
324 */
325 static int efx_fill_loopback_test(struct efx_nic *efx,
326 struct efx_loopback_self_tests *lb_tests,
327 enum efx_loopback_mode mode,
328 unsigned int test_index,
329 struct ethtool_string *strings, u64 *data)
330 {
331 struct efx_channel *channel = efx_get_channel(efx, 0);
332 struct efx_tx_queue *tx_queue;
333
334 efx_for_each_channel_tx_queue(tx_queue, channel) {
335 efx_fill_test(test_index++, strings, data,
336 &lb_tests->tx_sent[tx_queue->queue],
337 EFX_TX_QUEUE_NAME(tx_queue),
338 EFX_LOOPBACK_NAME(mode, "tx_sent"));
339 efx_fill_test(test_index++, strings, data,
340 &lb_tests->tx_done[tx_queue->queue],
341 EFX_TX_QUEUE_NAME(tx_queue),
342 EFX_LOOPBACK_NAME(mode, "tx_done"));
343 }
344 efx_fill_test(test_index++, strings, data,
345 &lb_tests->rx_good,
346 "rx", 0,
347 EFX_LOOPBACK_NAME(mode, "rx_good"));
348 efx_fill_test(test_index++, strings, data,
349 &lb_tests->rx_bad,
350 "rx", 0,
351 EFX_LOOPBACK_NAME(mode, "rx_bad"));
352
353 return test_index;
354 }
355
356 /**
357 * efx_ethtool_fill_self_tests - get self-test details
358 * @efx: Efx NIC
359 * @tests: Efx self-test results structure, or %NULL
360 * @strings: Ethtool strings, or %NULL
361 * @data: Ethtool test results, or %NULL
362 */
363 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
364 struct efx_self_tests *tests,
365 struct ethtool_string *strings,
366 u64 *data)
367 {
368 struct efx_channel *channel;
369 unsigned int n = 0, i;
370 enum efx_loopback_mode mode;
371
372 efx_fill_test(n++, strings, data, &tests->phy_alive,
373 "phy", 0, "alive", NULL);
374 efx_fill_test(n++, strings, data, &tests->nvram,
375 "core", 0, "nvram", NULL);
376 efx_fill_test(n++, strings, data, &tests->interrupt,
377 "core", 0, "interrupt", NULL);
378
379 /* Event queues */
380 efx_for_each_channel(channel, efx) {
381 efx_fill_test(n++, strings, data,
382 &tests->eventq_dma[channel->channel],
383 EFX_CHANNEL_NAME(channel),
384 "eventq.dma", NULL);
385 efx_fill_test(n++, strings, data,
386 &tests->eventq_int[channel->channel],
387 EFX_CHANNEL_NAME(channel),
388 "eventq.int", NULL);
389 efx_fill_test(n++, strings, data,
390 &tests->eventq_poll[channel->channel],
391 EFX_CHANNEL_NAME(channel),
392 "eventq.poll", NULL);
393 }
394
395 efx_fill_test(n++, strings, data, &tests->registers,
396 "core", 0, "registers", NULL);
397
398 if (efx->phy_op->run_tests != NULL) {
399 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
400
401 for (i = 0; true; ++i) {
402 const char *name;
403
404 EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
405 name = efx->phy_op->test_name(efx, i);
406 if (name == NULL)
407 break;
408
409 efx_fill_test(n++, strings, data, &tests->phy_ext[i],
410 "phy", 0, name, NULL);
411 }
412 }
413
414 /* Loopback tests */
415 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
416 if (!(efx->loopback_modes & (1 << mode)))
417 continue;
418 n = efx_fill_loopback_test(efx,
419 &tests->loopback[mode], mode, n,
420 strings, data);
421 }
422
423 return n;
424 }
425
426 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
427 int string_set)
428 {
429 switch (string_set) {
430 case ETH_SS_STATS:
431 return EFX_ETHTOOL_NUM_STATS;
432 case ETH_SS_TEST:
433 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
434 NULL, NULL, NULL);
435 default:
436 return -EINVAL;
437 }
438 }
439
440 static void efx_ethtool_get_strings(struct net_device *net_dev,
441 u32 string_set, u8 *strings)
442 {
443 struct efx_nic *efx = netdev_priv(net_dev);
444 struct ethtool_string *ethtool_strings =
445 (struct ethtool_string *)strings;
446 int i;
447
448 switch (string_set) {
449 case ETH_SS_STATS:
450 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
451 strncpy(ethtool_strings[i].name,
452 efx_ethtool_stats[i].name,
453 sizeof(ethtool_strings[i].name));
454 break;
455 case ETH_SS_TEST:
456 efx_ethtool_fill_self_tests(efx, NULL,
457 ethtool_strings, NULL);
458 break;
459 default:
460 /* No other string sets */
461 break;
462 }
463 }
464
465 static void efx_ethtool_get_stats(struct net_device *net_dev,
466 struct ethtool_stats *stats,
467 u64 *data)
468 {
469 struct efx_nic *efx = netdev_priv(net_dev);
470 struct efx_mac_stats *mac_stats = &efx->mac_stats;
471 struct efx_ethtool_stat *stat;
472 struct efx_channel *channel;
473 struct rtnl_link_stats64 temp;
474 int i;
475
476 EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
477
478 /* Update MAC and NIC statistics */
479 dev_get_stats(net_dev, &temp);
480
481 /* Fill detailed statistics buffer */
482 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
483 stat = &efx_ethtool_stats[i];
484 switch (stat->source) {
485 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
486 data[i] = stat->get_stat((void *)mac_stats +
487 stat->offset);
488 break;
489 case EFX_ETHTOOL_STAT_SOURCE_nic:
490 data[i] = stat->get_stat((void *)efx + stat->offset);
491 break;
492 case EFX_ETHTOOL_STAT_SOURCE_channel:
493 data[i] = 0;
494 efx_for_each_channel(channel, efx)
495 data[i] += stat->get_stat((void *)channel +
496 stat->offset);
497 break;
498 }
499 }
500 }
501
502 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
503 {
504 struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
505 unsigned long features;
506
507 features = NETIF_F_TSO;
508 if (efx->type->offload_features & NETIF_F_V6_CSUM)
509 features |= NETIF_F_TSO6;
510
511 if (enable)
512 net_dev->features |= features;
513 else
514 net_dev->features &= ~features;
515
516 return 0;
517 }
518
519 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
520 {
521 struct efx_nic *efx = netdev_priv(net_dev);
522 unsigned long features = efx->type->offload_features & NETIF_F_ALL_CSUM;
523
524 if (enable)
525 net_dev->features |= features;
526 else
527 net_dev->features &= ~features;
528
529 return 0;
530 }
531
532 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
533 {
534 struct efx_nic *efx = netdev_priv(net_dev);
535
536 /* No way to stop the hardware doing the checks; we just
537 * ignore the result.
538 */
539 efx->rx_checksum_enabled = !!enable;
540
541 return 0;
542 }
543
544 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
545 {
546 struct efx_nic *efx = netdev_priv(net_dev);
547
548 return efx->rx_checksum_enabled;
549 }
550
551 static int efx_ethtool_set_flags(struct net_device *net_dev, u32 data)
552 {
553 struct efx_nic *efx = netdev_priv(net_dev);
554 u32 supported = (efx->type->offload_features &
555 (ETH_FLAG_RXHASH | ETH_FLAG_NTUPLE));
556 int rc;
557
558 rc = ethtool_op_set_flags(net_dev, data, supported);
559 if (rc)
560 return rc;
561
562 if (!(data & ETH_FLAG_NTUPLE))
563 efx_filter_clear_rx(efx, EFX_FILTER_PRI_MANUAL);
564
565 return 0;
566 }
567
568 static void efx_ethtool_self_test(struct net_device *net_dev,
569 struct ethtool_test *test, u64 *data)
570 {
571 struct efx_nic *efx = netdev_priv(net_dev);
572 struct efx_self_tests *efx_tests;
573 int already_up;
574 int rc = -ENOMEM;
575
576 efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
577 if (!efx_tests)
578 goto fail;
579
580
581 ASSERT_RTNL();
582 if (efx->state != STATE_RUNNING) {
583 rc = -EIO;
584 goto fail1;
585 }
586
587 netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
588 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
589
590 /* We need rx buffers and interrupts. */
591 already_up = (efx->net_dev->flags & IFF_UP);
592 if (!already_up) {
593 rc = dev_open(efx->net_dev);
594 if (rc) {
595 netif_err(efx, drv, efx->net_dev,
596 "failed opening device.\n");
597 goto fail1;
598 }
599 }
600
601 rc = efx_selftest(efx, efx_tests, test->flags);
602
603 if (!already_up)
604 dev_close(efx->net_dev);
605
606 netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
607 rc == 0 ? "passed" : "failed",
608 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
609
610 fail1:
611 /* Fill ethtool results structures */
612 efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
613 kfree(efx_tests);
614 fail:
615 if (rc)
616 test->flags |= ETH_TEST_FL_FAILED;
617 }
618
619 /* Restart autonegotiation */
620 static int efx_ethtool_nway_reset(struct net_device *net_dev)
621 {
622 struct efx_nic *efx = netdev_priv(net_dev);
623
624 return mdio45_nway_restart(&efx->mdio);
625 }
626
627 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
628 struct ethtool_coalesce *coalesce)
629 {
630 struct efx_nic *efx = netdev_priv(net_dev);
631 struct efx_channel *channel;
632
633 memset(coalesce, 0, sizeof(*coalesce));
634
635 /* Find lowest IRQ moderation across all used TX queues */
636 coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
637 efx_for_each_channel(channel, efx) {
638 if (!efx_channel_get_tx_queue(channel, 0))
639 continue;
640 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
641 if (channel->channel < efx->n_rx_channels)
642 coalesce->tx_coalesce_usecs_irq =
643 channel->irq_moderation;
644 else
645 coalesce->tx_coalesce_usecs_irq = 0;
646 }
647 }
648
649 coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
650 coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
651
652 coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
653 coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
654
655 return 0;
656 }
657
658 /* Set coalescing parameters
659 * The difficulties occur for shared channels
660 */
661 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
662 struct ethtool_coalesce *coalesce)
663 {
664 struct efx_nic *efx = netdev_priv(net_dev);
665 struct efx_channel *channel;
666 unsigned tx_usecs, rx_usecs, adaptive;
667
668 if (coalesce->use_adaptive_tx_coalesce)
669 return -EOPNOTSUPP;
670
671 if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
672 netif_err(efx, drv, efx->net_dev, "invalid coalescing setting. "
673 "Only rx/tx_coalesce_usecs_irq are supported\n");
674 return -EOPNOTSUPP;
675 }
676
677 rx_usecs = coalesce->rx_coalesce_usecs_irq;
678 tx_usecs = coalesce->tx_coalesce_usecs_irq;
679 adaptive = coalesce->use_adaptive_rx_coalesce;
680
681 /* If the channel is shared only allow RX parameters to be set */
682 efx_for_each_channel(channel, efx) {
683 if (efx_channel_get_rx_queue(channel) &&
684 efx_channel_get_tx_queue(channel, 0) &&
685 tx_usecs) {
686 netif_err(efx, drv, efx->net_dev, "Channel is shared. "
687 "Only RX coalescing may be set\n");
688 return -EOPNOTSUPP;
689 }
690 }
691
692 efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
693 efx_for_each_channel(channel, efx)
694 efx->type->push_irq_moderation(channel);
695
696 return 0;
697 }
698
699 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
700 struct ethtool_ringparam *ring)
701 {
702 struct efx_nic *efx = netdev_priv(net_dev);
703
704 ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
705 ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
706 ring->rx_mini_max_pending = 0;
707 ring->rx_jumbo_max_pending = 0;
708 ring->rx_pending = efx->rxq_entries;
709 ring->tx_pending = efx->txq_entries;
710 ring->rx_mini_pending = 0;
711 ring->rx_jumbo_pending = 0;
712 }
713
714 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
715 struct ethtool_ringparam *ring)
716 {
717 struct efx_nic *efx = netdev_priv(net_dev);
718
719 if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
720 ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
721 ring->tx_pending > EFX_MAX_DMAQ_SIZE)
722 return -EINVAL;
723
724 if (ring->rx_pending < EFX_MIN_RING_SIZE ||
725 ring->tx_pending < EFX_MIN_RING_SIZE) {
726 netif_err(efx, drv, efx->net_dev,
727 "TX and RX queues cannot be smaller than %ld\n",
728 EFX_MIN_RING_SIZE);
729 return -EINVAL;
730 }
731
732 return efx_realloc_channels(efx, ring->rx_pending, ring->tx_pending);
733 }
734
735 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
736 struct ethtool_pauseparam *pause)
737 {
738 struct efx_nic *efx = netdev_priv(net_dev);
739 enum efx_fc_type wanted_fc, old_fc;
740 u32 old_adv;
741 bool reset;
742 int rc = 0;
743
744 mutex_lock(&efx->mac_lock);
745
746 wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
747 (pause->tx_pause ? EFX_FC_TX : 0) |
748 (pause->autoneg ? EFX_FC_AUTO : 0));
749
750 if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
751 netif_dbg(efx, drv, efx->net_dev,
752 "Flow control unsupported: tx ON rx OFF\n");
753 rc = -EINVAL;
754 goto out;
755 }
756
757 if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
758 netif_dbg(efx, drv, efx->net_dev,
759 "Autonegotiation is disabled\n");
760 rc = -EINVAL;
761 goto out;
762 }
763
764 /* TX flow control may automatically turn itself off if the
765 * link partner (intermittently) stops responding to pause
766 * frames. There isn't any indication that this has happened,
767 * so the best we do is leave it up to the user to spot this
768 * and fix it be cycling transmit flow control on this end. */
769 reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
770 if (EFX_WORKAROUND_11482(efx) && reset) {
771 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
772 /* Recover by resetting the EM block */
773 falcon_stop_nic_stats(efx);
774 falcon_drain_tx_fifo(efx);
775 efx->mac_op->reconfigure(efx);
776 falcon_start_nic_stats(efx);
777 } else {
778 /* Schedule a reset to recover */
779 efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
780 }
781 }
782
783 old_adv = efx->link_advertising;
784 old_fc = efx->wanted_fc;
785 efx_link_set_wanted_fc(efx, wanted_fc);
786 if (efx->link_advertising != old_adv ||
787 (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
788 rc = efx->phy_op->reconfigure(efx);
789 if (rc) {
790 netif_err(efx, drv, efx->net_dev,
791 "Unable to advertise requested flow "
792 "control setting\n");
793 goto out;
794 }
795 }
796
797 /* Reconfigure the MAC. The PHY *may* generate a link state change event
798 * if the user just changed the advertised capabilities, but there's no
799 * harm doing this twice */
800 efx->mac_op->reconfigure(efx);
801
802 out:
803 mutex_unlock(&efx->mac_lock);
804
805 return rc;
806 }
807
808 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
809 struct ethtool_pauseparam *pause)
810 {
811 struct efx_nic *efx = netdev_priv(net_dev);
812
813 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
814 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
815 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
816 }
817
818
819 static void efx_ethtool_get_wol(struct net_device *net_dev,
820 struct ethtool_wolinfo *wol)
821 {
822 struct efx_nic *efx = netdev_priv(net_dev);
823 return efx->type->get_wol(efx, wol);
824 }
825
826
827 static int efx_ethtool_set_wol(struct net_device *net_dev,
828 struct ethtool_wolinfo *wol)
829 {
830 struct efx_nic *efx = netdev_priv(net_dev);
831 return efx->type->set_wol(efx, wol->wolopts);
832 }
833
834 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
835 {
836 struct efx_nic *efx = netdev_priv(net_dev);
837 enum reset_type method;
838 enum {
839 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
840 ETH_RESET_OFFLOAD | ETH_RESET_MAC)
841 };
842
843 /* Check for minimal reset flags */
844 if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
845 return -EINVAL;
846 *flags ^= ETH_RESET_EFX_INVISIBLE;
847 method = RESET_TYPE_INVISIBLE;
848
849 if (*flags & ETH_RESET_PHY) {
850 *flags ^= ETH_RESET_PHY;
851 method = RESET_TYPE_ALL;
852 }
853
854 if ((*flags & efx->type->reset_world_flags) ==
855 efx->type->reset_world_flags) {
856 *flags ^= efx->type->reset_world_flags;
857 method = RESET_TYPE_WORLD;
858 }
859
860 return efx_reset(efx, method);
861 }
862
863 static int
864 efx_ethtool_get_rxnfc(struct net_device *net_dev,
865 struct ethtool_rxnfc *info, void *rules __always_unused)
866 {
867 struct efx_nic *efx = netdev_priv(net_dev);
868
869 switch (info->cmd) {
870 case ETHTOOL_GRXRINGS:
871 info->data = efx->n_rx_channels;
872 return 0;
873
874 case ETHTOOL_GRXFH: {
875 unsigned min_revision = 0;
876
877 info->data = 0;
878 switch (info->flow_type) {
879 case TCP_V4_FLOW:
880 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
881 /* fall through */
882 case UDP_V4_FLOW:
883 case SCTP_V4_FLOW:
884 case AH_ESP_V4_FLOW:
885 case IPV4_FLOW:
886 info->data |= RXH_IP_SRC | RXH_IP_DST;
887 min_revision = EFX_REV_FALCON_B0;
888 break;
889 case TCP_V6_FLOW:
890 info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
891 /* fall through */
892 case UDP_V6_FLOW:
893 case SCTP_V6_FLOW:
894 case AH_ESP_V6_FLOW:
895 case IPV6_FLOW:
896 info->data |= RXH_IP_SRC | RXH_IP_DST;
897 min_revision = EFX_REV_SIENA_A0;
898 break;
899 default:
900 break;
901 }
902 if (efx_nic_rev(efx) < min_revision)
903 info->data = 0;
904 return 0;
905 }
906
907 default:
908 return -EOPNOTSUPP;
909 }
910 }
911
912 static int efx_ethtool_set_rx_ntuple(struct net_device *net_dev,
913 struct ethtool_rx_ntuple *ntuple)
914 {
915 struct efx_nic *efx = netdev_priv(net_dev);
916 struct ethtool_tcpip4_spec *ip_entry = &ntuple->fs.h_u.tcp_ip4_spec;
917 struct ethtool_tcpip4_spec *ip_mask = &ntuple->fs.m_u.tcp_ip4_spec;
918 struct ethhdr *mac_entry = &ntuple->fs.h_u.ether_spec;
919 struct ethhdr *mac_mask = &ntuple->fs.m_u.ether_spec;
920 struct efx_filter_spec filter;
921 int rc;
922
923 /* Range-check action */
924 if (ntuple->fs.action < ETHTOOL_RXNTUPLE_ACTION_CLEAR ||
925 ntuple->fs.action >= (s32)efx->n_rx_channels)
926 return -EINVAL;
927
928 if (~ntuple->fs.data_mask)
929 return -EINVAL;
930
931 efx_filter_init_rx(&filter, EFX_FILTER_PRI_MANUAL, 0,
932 (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP) ?
933 0xfff : ntuple->fs.action);
934
935 switch (ntuple->fs.flow_type) {
936 case TCP_V4_FLOW:
937 case UDP_V4_FLOW: {
938 u8 proto = (ntuple->fs.flow_type == TCP_V4_FLOW ?
939 IPPROTO_TCP : IPPROTO_UDP);
940
941 /* Must match all of destination, */
942 if (ip_mask->ip4dst | ip_mask->pdst)
943 return -EINVAL;
944 /* all or none of source, */
945 if ((ip_mask->ip4src | ip_mask->psrc) &&
946 ((__force u32)~ip_mask->ip4src |
947 (__force u16)~ip_mask->psrc))
948 return -EINVAL;
949 /* and nothing else */
950 if ((u8)~ip_mask->tos | (u16)~ntuple->fs.vlan_tag_mask)
951 return -EINVAL;
952
953 if (!ip_mask->ip4src)
954 rc = efx_filter_set_ipv4_full(&filter, proto,
955 ip_entry->ip4dst,
956 ip_entry->pdst,
957 ip_entry->ip4src,
958 ip_entry->psrc);
959 else
960 rc = efx_filter_set_ipv4_local(&filter, proto,
961 ip_entry->ip4dst,
962 ip_entry->pdst);
963 if (rc)
964 return rc;
965 break;
966 }
967
968 case ETHER_FLOW:
969 /* Must match all of destination, */
970 if (!is_zero_ether_addr(mac_mask->h_dest))
971 return -EINVAL;
972 /* all or none of VID, */
973 if (ntuple->fs.vlan_tag_mask != 0xf000 &&
974 ntuple->fs.vlan_tag_mask != 0xffff)
975 return -EINVAL;
976 /* and nothing else */
977 if (!is_broadcast_ether_addr(mac_mask->h_source) ||
978 mac_mask->h_proto != htons(0xffff))
979 return -EINVAL;
980
981 rc = efx_filter_set_eth_local(
982 &filter,
983 (ntuple->fs.vlan_tag_mask == 0xf000) ?
984 ntuple->fs.vlan_tag : EFX_FILTER_VID_UNSPEC,
985 mac_entry->h_dest);
986 if (rc)
987 return rc;
988 break;
989
990 default:
991 return -EINVAL;
992 }
993
994 if (ntuple->fs.action == ETHTOOL_RXNTUPLE_ACTION_CLEAR)
995 return efx_filter_remove_filter(efx, &filter);
996 else
997 return efx_filter_insert_filter(efx, &filter, true);
998 }
999
1000 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev,
1001 struct ethtool_rxfh_indir *indir)
1002 {
1003 struct efx_nic *efx = netdev_priv(net_dev);
1004 size_t copy_size =
1005 min_t(size_t, indir->size, ARRAY_SIZE(efx->rx_indir_table));
1006
1007 if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
1008 return -EOPNOTSUPP;
1009
1010 indir->size = ARRAY_SIZE(efx->rx_indir_table);
1011 memcpy(indir->ring_index, efx->rx_indir_table,
1012 copy_size * sizeof(indir->ring_index[0]));
1013 return 0;
1014 }
1015
1016 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
1017 const struct ethtool_rxfh_indir *indir)
1018 {
1019 struct efx_nic *efx = netdev_priv(net_dev);
1020 size_t i;
1021
1022 if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
1023 return -EOPNOTSUPP;
1024
1025 /* Validate size and indices */
1026 if (indir->size != ARRAY_SIZE(efx->rx_indir_table))
1027 return -EINVAL;
1028 for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++)
1029 if (indir->ring_index[i] >= efx->n_rx_channels)
1030 return -EINVAL;
1031
1032 memcpy(efx->rx_indir_table, indir->ring_index,
1033 sizeof(efx->rx_indir_table));
1034 efx_nic_push_rx_indir_table(efx);
1035 return 0;
1036 }
1037
1038 const struct ethtool_ops efx_ethtool_ops = {
1039 .get_settings = efx_ethtool_get_settings,
1040 .set_settings = efx_ethtool_set_settings,
1041 .get_drvinfo = efx_ethtool_get_drvinfo,
1042 .get_regs_len = efx_ethtool_get_regs_len,
1043 .get_regs = efx_ethtool_get_regs,
1044 .get_msglevel = efx_ethtool_get_msglevel,
1045 .set_msglevel = efx_ethtool_set_msglevel,
1046 .nway_reset = efx_ethtool_nway_reset,
1047 .get_link = ethtool_op_get_link,
1048 .get_coalesce = efx_ethtool_get_coalesce,
1049 .set_coalesce = efx_ethtool_set_coalesce,
1050 .get_ringparam = efx_ethtool_get_ringparam,
1051 .set_ringparam = efx_ethtool_set_ringparam,
1052 .get_pauseparam = efx_ethtool_get_pauseparam,
1053 .set_pauseparam = efx_ethtool_set_pauseparam,
1054 .get_rx_csum = efx_ethtool_get_rx_csum,
1055 .set_rx_csum = efx_ethtool_set_rx_csum,
1056 .get_tx_csum = ethtool_op_get_tx_csum,
1057 /* Need to enable/disable IPv6 too */
1058 .set_tx_csum = efx_ethtool_set_tx_csum,
1059 .get_sg = ethtool_op_get_sg,
1060 .set_sg = ethtool_op_set_sg,
1061 .get_tso = ethtool_op_get_tso,
1062 /* Need to enable/disable TSO-IPv6 too */
1063 .set_tso = efx_ethtool_set_tso,
1064 .get_flags = ethtool_op_get_flags,
1065 .set_flags = efx_ethtool_set_flags,
1066 .get_sset_count = efx_ethtool_get_sset_count,
1067 .self_test = efx_ethtool_self_test,
1068 .get_strings = efx_ethtool_get_strings,
1069 .phys_id = efx_ethtool_phys_id,
1070 .get_ethtool_stats = efx_ethtool_get_stats,
1071 .get_wol = efx_ethtool_get_wol,
1072 .set_wol = efx_ethtool_set_wol,
1073 .reset = efx_ethtool_reset,
1074 .get_rxnfc = efx_ethtool_get_rxnfc,
1075 .set_rx_ntuple = efx_ethtool_set_rx_ntuple,
1076 .get_rxfh_indir = efx_ethtool_get_rxfh_indir,
1077 .set_rxfh_indir = efx_ethtool_set_rxfh_indir,
1078 };
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree