Bluetooth: Fix rejecting SMP security request in slave role
[cascardo/linux.git] / drivers / net / ethernet / sfc / ethtool.c
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
22 struct 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
45 static u64 efx_get_uint_stat(void *field)
46 {
47         return *(unsigned int *)field;
48 }
49
50 static 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
67 static 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_ATOMIC_NIC_ERROR_STAT(rx_reset),
74         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
75         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
76         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
77         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
78         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
79         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_nodesc_trunc),
80         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
81         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
82 };
83
84 #define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
85
86 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
87
88 /**************************************************************************
89  *
90  * Ethtool operations
91  *
92  **************************************************************************
93  */
94
95 /* Identify device by flashing LEDs */
96 static int efx_ethtool_phys_id(struct net_device *net_dev,
97                                enum ethtool_phys_id_state state)
98 {
99         struct efx_nic *efx = netdev_priv(net_dev);
100         enum efx_led_mode mode = EFX_LED_DEFAULT;
101
102         switch (state) {
103         case ETHTOOL_ID_ON:
104                 mode = EFX_LED_ON;
105                 break;
106         case ETHTOOL_ID_OFF:
107                 mode = EFX_LED_OFF;
108                 break;
109         case ETHTOOL_ID_INACTIVE:
110                 mode = EFX_LED_DEFAULT;
111                 break;
112         case ETHTOOL_ID_ACTIVE:
113                 return 1;       /* cycle on/off once per second */
114         }
115
116         efx->type->set_id_led(efx, mode);
117         return 0;
118 }
119
120 /* This must be called with rtnl_lock held. */
121 static int efx_ethtool_get_settings(struct net_device *net_dev,
122                                     struct ethtool_cmd *ecmd)
123 {
124         struct efx_nic *efx = netdev_priv(net_dev);
125         struct efx_link_state *link_state = &efx->link_state;
126
127         mutex_lock(&efx->mac_lock);
128         efx->phy_op->get_settings(efx, ecmd);
129         mutex_unlock(&efx->mac_lock);
130
131         /* Both MACs support pause frames (bidirectional and respond-only) */
132         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
133
134         if (LOOPBACK_INTERNAL(efx)) {
135                 ethtool_cmd_speed_set(ecmd, link_state->speed);
136                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
137         }
138
139         return 0;
140 }
141
142 /* This must be called with rtnl_lock held. */
143 static int efx_ethtool_set_settings(struct net_device *net_dev,
144                                     struct ethtool_cmd *ecmd)
145 {
146         struct efx_nic *efx = netdev_priv(net_dev);
147         int rc;
148
149         /* GMAC does not support 1000Mbps HD */
150         if ((ethtool_cmd_speed(ecmd) == SPEED_1000) &&
151             (ecmd->duplex != DUPLEX_FULL)) {
152                 netif_dbg(efx, drv, efx->net_dev,
153                           "rejecting unsupported 1000Mbps HD setting\n");
154                 return -EINVAL;
155         }
156
157         mutex_lock(&efx->mac_lock);
158         rc = efx->phy_op->set_settings(efx, ecmd);
159         mutex_unlock(&efx->mac_lock);
160         return rc;
161 }
162
163 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
164                                     struct ethtool_drvinfo *info)
165 {
166         struct efx_nic *efx = netdev_priv(net_dev);
167
168         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
169         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
170         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
171                 efx_mcdi_print_fwver(efx, info->fw_version,
172                                      sizeof(info->fw_version));
173         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
174 }
175
176 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
177 {
178         return efx_nic_get_regs_len(netdev_priv(net_dev));
179 }
180
181 static void efx_ethtool_get_regs(struct net_device *net_dev,
182                                  struct ethtool_regs *regs, void *buf)
183 {
184         struct efx_nic *efx = netdev_priv(net_dev);
185
186         regs->version = efx->type->revision;
187         efx_nic_get_regs(efx, buf);
188 }
189
190 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
191 {
192         struct efx_nic *efx = netdev_priv(net_dev);
193         return efx->msg_enable;
194 }
195
196 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
197 {
198         struct efx_nic *efx = netdev_priv(net_dev);
199         efx->msg_enable = msg_enable;
200 }
201
202 /**
203  * efx_fill_test - fill in an individual self-test entry
204  * @test_index:         Index of the test
205  * @strings:            Ethtool strings, or %NULL
206  * @data:               Ethtool test results, or %NULL
207  * @test:               Pointer to test result (used only if data != %NULL)
208  * @unit_format:        Unit name format (e.g. "chan\%d")
209  * @unit_id:            Unit id (e.g. 0 for "chan0")
210  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
211  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
212  *
213  * Fill in an individual self-test entry.
214  */
215 static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
216                           int *test, const char *unit_format, int unit_id,
217                           const char *test_format, const char *test_id)
218 {
219         char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
220
221         /* Fill data value, if applicable */
222         if (data)
223                 data[test_index] = *test;
224
225         /* Fill string, if applicable */
226         if (strings) {
227                 if (strchr(unit_format, '%'))
228                         snprintf(unit_str, sizeof(unit_str),
229                                  unit_format, unit_id);
230                 else
231                         strcpy(unit_str, unit_format);
232                 snprintf(test_str, sizeof(test_str), test_format, test_id);
233                 snprintf(strings + test_index * ETH_GSTRING_LEN,
234                          ETH_GSTRING_LEN,
235                          "%-6s %-24s", unit_str, test_str);
236         }
237 }
238
239 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
240 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
241 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
242 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
243         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
244
245 /**
246  * efx_fill_loopback_test - fill in a block of loopback self-test entries
247  * @efx:                Efx NIC
248  * @lb_tests:           Efx loopback self-test results structure
249  * @mode:               Loopback test mode
250  * @test_index:         Starting index of the test
251  * @strings:            Ethtool strings, or %NULL
252  * @data:               Ethtool test results, or %NULL
253  */
254 static int efx_fill_loopback_test(struct efx_nic *efx,
255                                   struct efx_loopback_self_tests *lb_tests,
256                                   enum efx_loopback_mode mode,
257                                   unsigned int test_index,
258                                   u8 *strings, u64 *data)
259 {
260         struct efx_channel *channel =
261                 efx_get_channel(efx, efx->tx_channel_offset);
262         struct efx_tx_queue *tx_queue;
263
264         efx_for_each_channel_tx_queue(tx_queue, channel) {
265                 efx_fill_test(test_index++, strings, data,
266                               &lb_tests->tx_sent[tx_queue->queue],
267                               EFX_TX_QUEUE_NAME(tx_queue),
268                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
269                 efx_fill_test(test_index++, strings, data,
270                               &lb_tests->tx_done[tx_queue->queue],
271                               EFX_TX_QUEUE_NAME(tx_queue),
272                               EFX_LOOPBACK_NAME(mode, "tx_done"));
273         }
274         efx_fill_test(test_index++, strings, data,
275                       &lb_tests->rx_good,
276                       "rx", 0,
277                       EFX_LOOPBACK_NAME(mode, "rx_good"));
278         efx_fill_test(test_index++, strings, data,
279                       &lb_tests->rx_bad,
280                       "rx", 0,
281                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
282
283         return test_index;
284 }
285
286 /**
287  * efx_ethtool_fill_self_tests - get self-test details
288  * @efx:                Efx NIC
289  * @tests:              Efx self-test results structure, or %NULL
290  * @strings:            Ethtool strings, or %NULL
291  * @data:               Ethtool test results, or %NULL
292  */
293 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
294                                        struct efx_self_tests *tests,
295                                        u8 *strings, u64 *data)
296 {
297         struct efx_channel *channel;
298         unsigned int n = 0, i;
299         enum efx_loopback_mode mode;
300
301         efx_fill_test(n++, strings, data, &tests->phy_alive,
302                       "phy", 0, "alive", NULL);
303         efx_fill_test(n++, strings, data, &tests->nvram,
304                       "core", 0, "nvram", NULL);
305         efx_fill_test(n++, strings, data, &tests->interrupt,
306                       "core", 0, "interrupt", NULL);
307
308         /* Event queues */
309         efx_for_each_channel(channel, efx) {
310                 efx_fill_test(n++, strings, data,
311                               &tests->eventq_dma[channel->channel],
312                               EFX_CHANNEL_NAME(channel),
313                               "eventq.dma", NULL);
314                 efx_fill_test(n++, strings, data,
315                               &tests->eventq_int[channel->channel],
316                               EFX_CHANNEL_NAME(channel),
317                               "eventq.int", NULL);
318         }
319
320         efx_fill_test(n++, strings, data, &tests->registers,
321                       "core", 0, "registers", NULL);
322
323         if (efx->phy_op->run_tests != NULL) {
324                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
325
326                 for (i = 0; true; ++i) {
327                         const char *name;
328
329                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
330                         name = efx->phy_op->test_name(efx, i);
331                         if (name == NULL)
332                                 break;
333
334                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
335                                       "phy", 0, name, NULL);
336                 }
337         }
338
339         /* Loopback tests */
340         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
341                 if (!(efx->loopback_modes & (1 << mode)))
342                         continue;
343                 n = efx_fill_loopback_test(efx,
344                                            &tests->loopback[mode], mode, n,
345                                            strings, data);
346         }
347
348         return n;
349 }
350
351 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
352                                       int string_set)
353 {
354         struct efx_nic *efx = netdev_priv(net_dev);
355
356         switch (string_set) {
357         case ETH_SS_STATS:
358                 return efx->type->describe_stats(efx, NULL) +
359                         EFX_ETHTOOL_SW_STAT_COUNT;
360         case ETH_SS_TEST:
361                 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
362         default:
363                 return -EINVAL;
364         }
365 }
366
367 static void efx_ethtool_get_strings(struct net_device *net_dev,
368                                     u32 string_set, u8 *strings)
369 {
370         struct efx_nic *efx = netdev_priv(net_dev);
371         int i;
372
373         switch (string_set) {
374         case ETH_SS_STATS:
375                 strings += (efx->type->describe_stats(efx, strings) *
376                             ETH_GSTRING_LEN);
377                 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
378                         strlcpy(strings + i * ETH_GSTRING_LEN,
379                                 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
380                 break;
381         case ETH_SS_TEST:
382                 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
383                 break;
384         default:
385                 /* No other string sets */
386                 break;
387         }
388 }
389
390 static void efx_ethtool_get_stats(struct net_device *net_dev,
391                                   struct ethtool_stats *stats,
392                                   u64 *data)
393 {
394         struct efx_nic *efx = netdev_priv(net_dev);
395         const struct efx_sw_stat_desc *stat;
396         struct efx_channel *channel;
397         struct efx_tx_queue *tx_queue;
398         int i;
399
400         spin_lock_bh(&efx->stats_lock);
401
402         /* Get NIC statistics */
403         data += efx->type->update_stats(efx, data, NULL);
404
405         /* Get software statistics */
406         for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
407                 stat = &efx_sw_stat_desc[i];
408                 switch (stat->source) {
409                 case EFX_ETHTOOL_STAT_SOURCE_nic:
410                         data[i] = stat->get_stat((void *)efx + stat->offset);
411                         break;
412                 case EFX_ETHTOOL_STAT_SOURCE_channel:
413                         data[i] = 0;
414                         efx_for_each_channel(channel, efx)
415                                 data[i] += stat->get_stat((void *)channel +
416                                                           stat->offset);
417                         break;
418                 case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
419                         data[i] = 0;
420                         efx_for_each_channel(channel, efx) {
421                                 efx_for_each_channel_tx_queue(tx_queue, channel)
422                                         data[i] +=
423                                                 stat->get_stat((void *)tx_queue
424                                                                + stat->offset);
425                         }
426                         break;
427                 }
428         }
429
430         spin_unlock_bh(&efx->stats_lock);
431 }
432
433 static void efx_ethtool_self_test(struct net_device *net_dev,
434                                   struct ethtool_test *test, u64 *data)
435 {
436         struct efx_nic *efx = netdev_priv(net_dev);
437         struct efx_self_tests *efx_tests;
438         int already_up;
439         int rc = -ENOMEM;
440
441         efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
442         if (!efx_tests)
443                 goto fail;
444
445         if (efx->state != STATE_READY) {
446                 rc = -EIO;
447                 goto fail1;
448         }
449
450         netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
451                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
452
453         /* We need rx buffers and interrupts. */
454         already_up = (efx->net_dev->flags & IFF_UP);
455         if (!already_up) {
456                 rc = dev_open(efx->net_dev);
457                 if (rc) {
458                         netif_err(efx, drv, efx->net_dev,
459                                   "failed opening device.\n");
460                         goto fail1;
461                 }
462         }
463
464         rc = efx_selftest(efx, efx_tests, test->flags);
465
466         if (!already_up)
467                 dev_close(efx->net_dev);
468
469         netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
470                    rc == 0 ? "passed" : "failed",
471                    (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
472
473 fail1:
474         /* Fill ethtool results structures */
475         efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
476         kfree(efx_tests);
477 fail:
478         if (rc)
479                 test->flags |= ETH_TEST_FL_FAILED;
480 }
481
482 /* Restart autonegotiation */
483 static int efx_ethtool_nway_reset(struct net_device *net_dev)
484 {
485         struct efx_nic *efx = netdev_priv(net_dev);
486
487         return mdio45_nway_restart(&efx->mdio);
488 }
489
490 /*
491  * Each channel has a single IRQ and moderation timer, started by any
492  * completion (or other event).  Unless the module parameter
493  * separate_tx_channels is set, IRQs and moderation are therefore
494  * shared between RX and TX completions.  In this case, when RX IRQ
495  * moderation is explicitly changed then TX IRQ moderation is
496  * automatically changed too, but otherwise we fail if the two values
497  * are requested to be different.
498  *
499  * The hardware does not support a limit on the number of completions
500  * before an IRQ, so we do not use the max_frames fields.  We should
501  * report and require that max_frames == (usecs != 0), but this would
502  * invalidate existing user documentation.
503  *
504  * The hardware does not have distinct settings for interrupt
505  * moderation while the previous IRQ is being handled, so we should
506  * not use the 'irq' fields.  However, an earlier developer
507  * misunderstood the meaning of the 'irq' fields and the driver did
508  * not support the standard fields.  To avoid invalidating existing
509  * user documentation, we report and accept changes through either the
510  * standard or 'irq' fields.  If both are changed at the same time, we
511  * prefer the standard field.
512  *
513  * We implement adaptive IRQ moderation, but use a different algorithm
514  * from that assumed in the definition of struct ethtool_coalesce.
515  * Therefore we do not use any of the adaptive moderation parameters
516  * in it.
517  */
518
519 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
520                                     struct ethtool_coalesce *coalesce)
521 {
522         struct efx_nic *efx = netdev_priv(net_dev);
523         unsigned int tx_usecs, rx_usecs;
524         bool rx_adaptive;
525
526         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
527
528         coalesce->tx_coalesce_usecs = tx_usecs;
529         coalesce->tx_coalesce_usecs_irq = tx_usecs;
530         coalesce->rx_coalesce_usecs = rx_usecs;
531         coalesce->rx_coalesce_usecs_irq = rx_usecs;
532         coalesce->use_adaptive_rx_coalesce = rx_adaptive;
533
534         return 0;
535 }
536
537 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
538                                     struct ethtool_coalesce *coalesce)
539 {
540         struct efx_nic *efx = netdev_priv(net_dev);
541         struct efx_channel *channel;
542         unsigned int tx_usecs, rx_usecs;
543         bool adaptive, rx_may_override_tx;
544         int rc;
545
546         if (coalesce->use_adaptive_tx_coalesce)
547                 return -EINVAL;
548
549         efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
550
551         if (coalesce->rx_coalesce_usecs != rx_usecs)
552                 rx_usecs = coalesce->rx_coalesce_usecs;
553         else
554                 rx_usecs = coalesce->rx_coalesce_usecs_irq;
555
556         adaptive = coalesce->use_adaptive_rx_coalesce;
557
558         /* If channels are shared, TX IRQ moderation can be quietly
559          * overridden unless it is changed from its old value.
560          */
561         rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
562                               coalesce->tx_coalesce_usecs_irq == tx_usecs);
563         if (coalesce->tx_coalesce_usecs != tx_usecs)
564                 tx_usecs = coalesce->tx_coalesce_usecs;
565         else
566                 tx_usecs = coalesce->tx_coalesce_usecs_irq;
567
568         rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
569                                      rx_may_override_tx);
570         if (rc != 0)
571                 return rc;
572
573         efx_for_each_channel(channel, efx)
574                 efx->type->push_irq_moderation(channel);
575
576         return 0;
577 }
578
579 static void efx_ethtool_get_ringparam(struct net_device *net_dev,
580                                       struct ethtool_ringparam *ring)
581 {
582         struct efx_nic *efx = netdev_priv(net_dev);
583
584         ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
585         ring->tx_max_pending = EFX_MAX_DMAQ_SIZE;
586         ring->rx_pending = efx->rxq_entries;
587         ring->tx_pending = efx->txq_entries;
588 }
589
590 static int efx_ethtool_set_ringparam(struct net_device *net_dev,
591                                      struct ethtool_ringparam *ring)
592 {
593         struct efx_nic *efx = netdev_priv(net_dev);
594         u32 txq_entries;
595
596         if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
597             ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
598             ring->tx_pending > EFX_MAX_DMAQ_SIZE)
599                 return -EINVAL;
600
601         if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
602                 netif_err(efx, drv, efx->net_dev,
603                           "RX queues cannot be smaller than %u\n",
604                           EFX_RXQ_MIN_ENT);
605                 return -EINVAL;
606         }
607
608         txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
609         if (txq_entries != ring->tx_pending)
610                 netif_warn(efx, drv, efx->net_dev,
611                            "increasing TX queue size to minimum of %u\n",
612                            txq_entries);
613
614         return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
615 }
616
617 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
618                                       struct ethtool_pauseparam *pause)
619 {
620         struct efx_nic *efx = netdev_priv(net_dev);
621         u8 wanted_fc, old_fc;
622         u32 old_adv;
623         int rc = 0;
624
625         mutex_lock(&efx->mac_lock);
626
627         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
628                      (pause->tx_pause ? EFX_FC_TX : 0) |
629                      (pause->autoneg ? EFX_FC_AUTO : 0));
630
631         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
632                 netif_dbg(efx, drv, efx->net_dev,
633                           "Flow control unsupported: tx ON rx OFF\n");
634                 rc = -EINVAL;
635                 goto out;
636         }
637
638         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
639                 netif_dbg(efx, drv, efx->net_dev,
640                           "Autonegotiation is disabled\n");
641                 rc = -EINVAL;
642                 goto out;
643         }
644
645         /* Hook for Falcon bug 11482 workaround */
646         if (efx->type->prepare_enable_fc_tx &&
647             (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX))
648                 efx->type->prepare_enable_fc_tx(efx);
649
650         old_adv = efx->link_advertising;
651         old_fc = efx->wanted_fc;
652         efx_link_set_wanted_fc(efx, wanted_fc);
653         if (efx->link_advertising != old_adv ||
654             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
655                 rc = efx->phy_op->reconfigure(efx);
656                 if (rc) {
657                         netif_err(efx, drv, efx->net_dev,
658                                   "Unable to advertise requested flow "
659                                   "control setting\n");
660                         goto out;
661                 }
662         }
663
664         /* Reconfigure the MAC. The PHY *may* generate a link state change event
665          * if the user just changed the advertised capabilities, but there's no
666          * harm doing this twice */
667         efx->type->reconfigure_mac(efx);
668
669 out:
670         mutex_unlock(&efx->mac_lock);
671
672         return rc;
673 }
674
675 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
676                                        struct ethtool_pauseparam *pause)
677 {
678         struct efx_nic *efx = netdev_priv(net_dev);
679
680         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
681         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
682         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
683 }
684
685
686 static void efx_ethtool_get_wol(struct net_device *net_dev,
687                                 struct ethtool_wolinfo *wol)
688 {
689         struct efx_nic *efx = netdev_priv(net_dev);
690         return efx->type->get_wol(efx, wol);
691 }
692
693
694 static int efx_ethtool_set_wol(struct net_device *net_dev,
695                                struct ethtool_wolinfo *wol)
696 {
697         struct efx_nic *efx = netdev_priv(net_dev);
698         return efx->type->set_wol(efx, wol->wolopts);
699 }
700
701 static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
702 {
703         struct efx_nic *efx = netdev_priv(net_dev);
704         int rc;
705
706         rc = efx->type->map_reset_flags(flags);
707         if (rc < 0)
708                 return rc;
709
710         return efx_reset(efx, rc);
711 }
712
713 /* MAC address mask including only I/G bit */
714 static const u8 mac_addr_ig_mask[ETH_ALEN] = { 0x01, 0, 0, 0, 0, 0 };
715
716 #define IP4_ADDR_FULL_MASK      ((__force __be32)~0)
717 #define PORT_FULL_MASK          ((__force __be16)~0)
718 #define ETHER_TYPE_FULL_MASK    ((__force __be16)~0)
719
720 static int efx_ethtool_get_class_rule(struct efx_nic *efx,
721                                       struct ethtool_rx_flow_spec *rule)
722 {
723         struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
724         struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
725         struct ethhdr *mac_entry = &rule->h_u.ether_spec;
726         struct ethhdr *mac_mask = &rule->m_u.ether_spec;
727         struct efx_filter_spec spec;
728         int rc;
729
730         rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL,
731                                         rule->location, &spec);
732         if (rc)
733                 return rc;
734
735         if (spec.dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP)
736                 rule->ring_cookie = RX_CLS_FLOW_DISC;
737         else
738                 rule->ring_cookie = spec.dmaq_id;
739
740         if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
741             spec.ether_type == htons(ETH_P_IP) &&
742             (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
743             (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
744             !(spec.match_flags &
745               ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
746                 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
747                 EFX_FILTER_MATCH_IP_PROTO |
748                 EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
749                 rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
750                                    TCP_V4_FLOW : UDP_V4_FLOW);
751                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
752                         ip_entry->ip4dst = spec.loc_host[0];
753                         ip_mask->ip4dst = IP4_ADDR_FULL_MASK;
754                 }
755                 if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
756                         ip_entry->ip4src = spec.rem_host[0];
757                         ip_mask->ip4src = IP4_ADDR_FULL_MASK;
758                 }
759                 if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
760                         ip_entry->pdst = spec.loc_port;
761                         ip_mask->pdst = PORT_FULL_MASK;
762                 }
763                 if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
764                         ip_entry->psrc = spec.rem_port;
765                         ip_mask->psrc = PORT_FULL_MASK;
766                 }
767         } else if (!(spec.match_flags &
768                      ~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG |
769                        EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE |
770                        EFX_FILTER_MATCH_OUTER_VID))) {
771                 rule->flow_type = ETHER_FLOW;
772                 if (spec.match_flags &
773                     (EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG)) {
774                         memcpy(mac_entry->h_dest, spec.loc_mac, ETH_ALEN);
775                         if (spec.match_flags & EFX_FILTER_MATCH_LOC_MAC)
776                                 memset(mac_mask->h_dest, ~0, ETH_ALEN);
777                         else
778                                 memcpy(mac_mask->h_dest, mac_addr_ig_mask,
779                                        ETH_ALEN);
780                 }
781                 if (spec.match_flags & EFX_FILTER_MATCH_REM_MAC) {
782                         memcpy(mac_entry->h_source, spec.rem_mac, ETH_ALEN);
783                         memset(mac_mask->h_source, ~0, ETH_ALEN);
784                 }
785                 if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
786                         mac_entry->h_proto = spec.ether_type;
787                         mac_mask->h_proto = ETHER_TYPE_FULL_MASK;
788                 }
789         } else {
790                 /* The above should handle all filters that we insert */
791                 WARN_ON(1);
792                 return -EINVAL;
793         }
794
795         if (spec.match_flags & EFX_FILTER_MATCH_OUTER_VID) {
796                 rule->flow_type |= FLOW_EXT;
797                 rule->h_ext.vlan_tci = spec.outer_vid;
798                 rule->m_ext.vlan_tci = htons(0xfff);
799         }
800
801         return rc;
802 }
803
804 static int
805 efx_ethtool_get_rxnfc(struct net_device *net_dev,
806                       struct ethtool_rxnfc *info, u32 *rule_locs)
807 {
808         struct efx_nic *efx = netdev_priv(net_dev);
809
810         switch (info->cmd) {
811         case ETHTOOL_GRXRINGS:
812                 info->data = efx->n_rx_channels;
813                 return 0;
814
815         case ETHTOOL_GRXFH: {
816                 unsigned min_revision = 0;
817
818                 info->data = 0;
819                 switch (info->flow_type) {
820                 case TCP_V4_FLOW:
821                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
822                         /* fall through */
823                 case UDP_V4_FLOW:
824                 case SCTP_V4_FLOW:
825                 case AH_ESP_V4_FLOW:
826                 case IPV4_FLOW:
827                         info->data |= RXH_IP_SRC | RXH_IP_DST;
828                         min_revision = EFX_REV_FALCON_B0;
829                         break;
830                 case TCP_V6_FLOW:
831                         info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
832                         /* fall through */
833                 case UDP_V6_FLOW:
834                 case SCTP_V6_FLOW:
835                 case AH_ESP_V6_FLOW:
836                 case IPV6_FLOW:
837                         info->data |= RXH_IP_SRC | RXH_IP_DST;
838                         min_revision = EFX_REV_SIENA_A0;
839                         break;
840                 default:
841                         break;
842                 }
843                 if (efx_nic_rev(efx) < min_revision)
844                         info->data = 0;
845                 return 0;
846         }
847
848         case ETHTOOL_GRXCLSRLCNT:
849                 info->data = efx_filter_get_rx_id_limit(efx);
850                 if (info->data == 0)
851                         return -EOPNOTSUPP;
852                 info->data |= RX_CLS_LOC_SPECIAL;
853                 info->rule_cnt =
854                         efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL);
855                 return 0;
856
857         case ETHTOOL_GRXCLSRULE:
858                 if (efx_filter_get_rx_id_limit(efx) == 0)
859                         return -EOPNOTSUPP;
860                 return efx_ethtool_get_class_rule(efx, &info->fs);
861
862         case ETHTOOL_GRXCLSRLALL: {
863                 s32 rc;
864                 info->data = efx_filter_get_rx_id_limit(efx);
865                 if (info->data == 0)
866                         return -EOPNOTSUPP;
867                 rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL,
868                                            rule_locs, info->rule_cnt);
869                 if (rc < 0)
870                         return rc;
871                 info->rule_cnt = rc;
872                 return 0;
873         }
874
875         default:
876                 return -EOPNOTSUPP;
877         }
878 }
879
880 static int efx_ethtool_set_class_rule(struct efx_nic *efx,
881                                       struct ethtool_rx_flow_spec *rule)
882 {
883         struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
884         struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
885         struct ethhdr *mac_entry = &rule->h_u.ether_spec;
886         struct ethhdr *mac_mask = &rule->m_u.ether_spec;
887         struct efx_filter_spec spec;
888         int rc;
889
890         /* Check that user wants us to choose the location */
891         if (rule->location != RX_CLS_LOC_ANY)
892                 return -EINVAL;
893
894         /* Range-check ring_cookie */
895         if (rule->ring_cookie >= efx->n_rx_channels &&
896             rule->ring_cookie != RX_CLS_FLOW_DISC)
897                 return -EINVAL;
898
899         /* Check for unsupported extensions */
900         if ((rule->flow_type & FLOW_EXT) &&
901             (rule->m_ext.vlan_etype || rule->m_ext.data[0] ||
902              rule->m_ext.data[1]))
903                 return -EINVAL;
904
905         efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL,
906                            efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0,
907                            (rule->ring_cookie == RX_CLS_FLOW_DISC) ?
908                            EFX_FILTER_RX_DMAQ_ID_DROP : rule->ring_cookie);
909
910         switch (rule->flow_type & ~FLOW_EXT) {
911         case TCP_V4_FLOW:
912         case UDP_V4_FLOW:
913                 spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
914                                     EFX_FILTER_MATCH_IP_PROTO);
915                 spec.ether_type = htons(ETH_P_IP);
916                 spec.ip_proto = ((rule->flow_type & ~FLOW_EXT) == TCP_V4_FLOW ?
917                                  IPPROTO_TCP : IPPROTO_UDP);
918                 if (ip_mask->ip4dst) {
919                         if (ip_mask->ip4dst != IP4_ADDR_FULL_MASK)
920                                 return -EINVAL;
921                         spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
922                         spec.loc_host[0] = ip_entry->ip4dst;
923                 }
924                 if (ip_mask->ip4src) {
925                         if (ip_mask->ip4src != IP4_ADDR_FULL_MASK)
926                                 return -EINVAL;
927                         spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
928                         spec.rem_host[0] = ip_entry->ip4src;
929                 }
930                 if (ip_mask->pdst) {
931                         if (ip_mask->pdst != PORT_FULL_MASK)
932                                 return -EINVAL;
933                         spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
934                         spec.loc_port = ip_entry->pdst;
935                 }
936                 if (ip_mask->psrc) {
937                         if (ip_mask->psrc != PORT_FULL_MASK)
938                                 return -EINVAL;
939                         spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
940                         spec.rem_port = ip_entry->psrc;
941                 }
942                 if (ip_mask->tos)
943                         return -EINVAL;
944                 break;
945
946         case ETHER_FLOW:
947                 if (!is_zero_ether_addr(mac_mask->h_dest)) {
948                         if (ether_addr_equal(mac_mask->h_dest,
949                                              mac_addr_ig_mask))
950                                 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
951                         else if (is_broadcast_ether_addr(mac_mask->h_dest))
952                                 spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC;
953                         else
954                                 return -EINVAL;
955                         memcpy(spec.loc_mac, mac_entry->h_dest, ETH_ALEN);
956                 }
957                 if (!is_zero_ether_addr(mac_mask->h_source)) {
958                         if (!is_broadcast_ether_addr(mac_mask->h_source))
959                                 return -EINVAL;
960                         spec.match_flags |= EFX_FILTER_MATCH_REM_MAC;
961                         memcpy(spec.rem_mac, mac_entry->h_source, ETH_ALEN);
962                 }
963                 if (mac_mask->h_proto) {
964                         if (mac_mask->h_proto != ETHER_TYPE_FULL_MASK)
965                                 return -EINVAL;
966                         spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
967                         spec.ether_type = mac_entry->h_proto;
968                 }
969                 break;
970
971         default:
972                 return -EINVAL;
973         }
974
975         if ((rule->flow_type & FLOW_EXT) && rule->m_ext.vlan_tci) {
976                 if (rule->m_ext.vlan_tci != htons(0xfff))
977                         return -EINVAL;
978                 spec.match_flags |= EFX_FILTER_MATCH_OUTER_VID;
979                 spec.outer_vid = rule->h_ext.vlan_tci;
980         }
981
982         rc = efx_filter_insert_filter(efx, &spec, true);
983         if (rc < 0)
984                 return rc;
985
986         rule->location = rc;
987         return 0;
988 }
989
990 static int efx_ethtool_set_rxnfc(struct net_device *net_dev,
991                                  struct ethtool_rxnfc *info)
992 {
993         struct efx_nic *efx = netdev_priv(net_dev);
994
995         if (efx_filter_get_rx_id_limit(efx) == 0)
996                 return -EOPNOTSUPP;
997
998         switch (info->cmd) {
999         case ETHTOOL_SRXCLSRLINS:
1000                 return efx_ethtool_set_class_rule(efx, &info->fs);
1001
1002         case ETHTOOL_SRXCLSRLDEL:
1003                 return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL,
1004                                                  info->fs.location);
1005
1006         default:
1007                 return -EOPNOTSUPP;
1008         }
1009 }
1010
1011 static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
1012 {
1013         struct efx_nic *efx = netdev_priv(net_dev);
1014
1015         return ((efx_nic_rev(efx) < EFX_REV_FALCON_B0 ||
1016                  efx->n_rx_channels == 1) ?
1017                 0 : ARRAY_SIZE(efx->rx_indir_table));
1018 }
1019
1020 static int efx_ethtool_get_rxfh_indir(struct net_device *net_dev, u32 *indir)
1021 {
1022         struct efx_nic *efx = netdev_priv(net_dev);
1023
1024         memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
1025         return 0;
1026 }
1027
1028 static int efx_ethtool_set_rxfh_indir(struct net_device *net_dev,
1029                                       const u32 *indir)
1030 {
1031         struct efx_nic *efx = netdev_priv(net_dev);
1032
1033         memcpy(efx->rx_indir_table, indir, sizeof(efx->rx_indir_table));
1034         efx_nic_push_rx_indir_table(efx);
1035         return 0;
1036 }
1037
1038 int efx_ethtool_get_ts_info(struct net_device *net_dev,
1039                             struct ethtool_ts_info *ts_info)
1040 {
1041         struct efx_nic *efx = netdev_priv(net_dev);
1042
1043         /* Software capabilities */
1044         ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE |
1045                                     SOF_TIMESTAMPING_SOFTWARE);
1046         ts_info->phc_index = -1;
1047
1048         efx_ptp_get_ts_info(efx, ts_info);
1049         return 0;
1050 }
1051
1052 static int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
1053                                          struct ethtool_eeprom *ee,
1054                                          u8 *data)
1055 {
1056         struct efx_nic *efx = netdev_priv(net_dev);
1057         int ret;
1058
1059         if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
1060                 return -EOPNOTSUPP;
1061
1062         mutex_lock(&efx->mac_lock);
1063         ret = efx->phy_op->get_module_eeprom(efx, ee, data);
1064         mutex_unlock(&efx->mac_lock);
1065
1066         return ret;
1067 }
1068
1069 static int efx_ethtool_get_module_info(struct net_device *net_dev,
1070                                        struct ethtool_modinfo *modinfo)
1071 {
1072         struct efx_nic *efx = netdev_priv(net_dev);
1073         int ret;
1074
1075         if (!efx->phy_op || !efx->phy_op->get_module_info)
1076                 return -EOPNOTSUPP;
1077
1078         mutex_lock(&efx->mac_lock);
1079         ret = efx->phy_op->get_module_info(efx, modinfo);
1080         mutex_unlock(&efx->mac_lock);
1081
1082         return ret;
1083 }
1084
1085 const struct ethtool_ops efx_ethtool_ops = {
1086         .get_settings           = efx_ethtool_get_settings,
1087         .set_settings           = efx_ethtool_set_settings,
1088         .get_drvinfo            = efx_ethtool_get_drvinfo,
1089         .get_regs_len           = efx_ethtool_get_regs_len,
1090         .get_regs               = efx_ethtool_get_regs,
1091         .get_msglevel           = efx_ethtool_get_msglevel,
1092         .set_msglevel           = efx_ethtool_set_msglevel,
1093         .nway_reset             = efx_ethtool_nway_reset,
1094         .get_link               = ethtool_op_get_link,
1095         .get_coalesce           = efx_ethtool_get_coalesce,
1096         .set_coalesce           = efx_ethtool_set_coalesce,
1097         .get_ringparam          = efx_ethtool_get_ringparam,
1098         .set_ringparam          = efx_ethtool_set_ringparam,
1099         .get_pauseparam         = efx_ethtool_get_pauseparam,
1100         .set_pauseparam         = efx_ethtool_set_pauseparam,
1101         .get_sset_count         = efx_ethtool_get_sset_count,
1102         .self_test              = efx_ethtool_self_test,
1103         .get_strings            = efx_ethtool_get_strings,
1104         .set_phys_id            = efx_ethtool_phys_id,
1105         .get_ethtool_stats      = efx_ethtool_get_stats,
1106         .get_wol                = efx_ethtool_get_wol,
1107         .set_wol                = efx_ethtool_set_wol,
1108         .reset                  = efx_ethtool_reset,
1109         .get_rxnfc              = efx_ethtool_get_rxnfc,
1110         .set_rxnfc              = efx_ethtool_set_rxnfc,
1111         .get_rxfh_indir_size    = efx_ethtool_get_rxfh_indir_size,
1112         .get_rxfh_indir         = efx_ethtool_get_rxfh_indir,
1113         .set_rxfh_indir         = efx_ethtool_set_rxfh_indir,
1114         .get_ts_info            = efx_ethtool_get_ts_info,
1115         .get_module_info        = efx_ethtool_get_module_info,
1116         .get_module_eeprom      = efx_ethtool_get_module_eeprom,
1117 };