1/****************************************************************************
   2 * Driver for Solarflare network controllers and boards
   3 * Copyright 2005-2006 Fen Systems Ltd.
   4 * Copyright 2006-2013 Solarflare Communications Inc.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License version 2 as published
   8 * by the Free Software Foundation, incorporated herein by reference.
   9 */
  10
  11#include <linux/netdevice.h>
  12#include <linux/ethtool.h>
  13#include <linux/rtnetlink.h>
  14#include <linux/in.h>
  15#include "net_driver.h"
  16#include "workarounds.h"
  17#include "selftest.h"
  18#include "efx.h"
 
 
 
 
  19#include "filter.h"
  20#include "nic.h"
  21
  22struct efx_sw_stat_desc {
  23	const char *name;
  24	enum {
  25		EFX_ETHTOOL_STAT_SOURCE_nic,
  26		EFX_ETHTOOL_STAT_SOURCE_channel,
  27		EFX_ETHTOOL_STAT_SOURCE_tx_queue
  28	} source;
  29	unsigned offset;
  30	u64(*get_stat) (void *field); /* Reader function */
  31};
  32
  33/* Initialiser for a struct efx_sw_stat_desc with type-checking */
  34#define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  35				get_stat_function) {			\
  36	.name = #stat_name,						\
  37	.source = EFX_ETHTOOL_STAT_SOURCE_##source_name,		\
  38	.offset = ((((field_type *) 0) ==				\
  39		      &((struct efx_##source_name *)0)->field) ?	\
  40		    offsetof(struct efx_##source_name, field) :		\
  41		    offsetof(struct efx_##source_name, field)),		\
  42	.get_stat = get_stat_function,					\
  43}
  44
  45static u64 efx_get_uint_stat(void *field)
  46{
  47	return *(unsigned int *)field;
  48}
  49
  50static u64 efx_get_atomic_stat(void *field)
  51{
  52	return atomic_read((atomic_t *) field);
  53}
  54
  55#define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)		\
  56	EFX_ETHTOOL_STAT(field, nic, field,			\
  57			 atomic_t, efx_get_atomic_stat)
  58
  59#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)			\
  60	EFX_ETHTOOL_STAT(field, channel, n_##field,		\
  61			 unsigned int, efx_get_uint_stat)
  62
  63#define EFX_ETHTOOL_UINT_TXQ_STAT(field)			\
  64	EFX_ETHTOOL_STAT(tx_##field, tx_queue, field,		\
  65			 unsigned int, efx_get_uint_stat)
  66
  67static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
  68	EFX_ETHTOOL_UINT_TXQ_STAT(merge_events),
  69	EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts),
  70	EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers),
  71	EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets),
  72	EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks),
  73	EFX_ETHTOOL_UINT_TXQ_STAT(pushes),
  74	EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets),
  75	EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets),
  76	EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
  77	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
  78	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
  79	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
  80	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err),
  81	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err),
  82	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err),
  83	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err),
  84	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err),
  85	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
  86	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
  87	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events),
  88	EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets),
  89};
  90
  91#define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)
  92
  93#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
  94
  95/**************************************************************************
  96 *
  97 * Ethtool operations
  98 *
  99 **************************************************************************
 100 */
 101
 102/* Identify device by flashing LEDs */
 103static int efx_ethtool_phys_id(struct net_device *net_dev,
 104			       enum ethtool_phys_id_state state)
 105{
 106	struct efx_nic *efx = netdev_priv(net_dev);
 107	enum efx_led_mode mode = EFX_LED_DEFAULT;
 108
 109	switch (state) {
 110	case ETHTOOL_ID_ON:
 111		mode = EFX_LED_ON;
 112		break;
 113	case ETHTOOL_ID_OFF:
 114		mode = EFX_LED_OFF;
 115		break;
 116	case ETHTOOL_ID_INACTIVE:
 117		mode = EFX_LED_DEFAULT;
 118		break;
 119	case ETHTOOL_ID_ACTIVE:
 120		return 1;	/* cycle on/off once per second */
 121	}
 122
 123	efx->type->set_id_led(efx, mode);
 124	return 0;
 125}
 126
 127/* This must be called with rtnl_lock held. */
 128static int
 129efx_ethtool_get_link_ksettings(struct net_device *net_dev,
 130			       struct ethtool_link_ksettings *cmd)
 131{
 132	struct efx_nic *efx = netdev_priv(net_dev);
 133	struct efx_link_state *link_state = &efx->link_state;
 134	u32 supported;
 135
 136	mutex_lock(&efx->mac_lock);
 137	efx->phy_op->get_link_ksettings(efx, cmd);
 138	mutex_unlock(&efx->mac_lock);
 139
 140	/* Both MACs support pause frames (bidirectional and respond-only) */
 141	ethtool_convert_link_mode_to_legacy_u32(&supported,
 142						cmd->link_modes.supported);
 143
 144	supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 145
 146	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 147						supported);
 148
 149	if (LOOPBACK_INTERNAL(efx)) {
 150		cmd->base.speed = link_state->speed;
 151		cmd->base.duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 152	}
 153
 154	return 0;
 155}
 156
 157/* This must be called with rtnl_lock held. */
 158static int
 159efx_ethtool_set_link_ksettings(struct net_device *net_dev,
 160			       const struct ethtool_link_ksettings *cmd)
 161{
 162	struct efx_nic *efx = netdev_priv(net_dev);
 163	int rc;
 164
 165	/* GMAC does not support 1000Mbps HD */
 166	if ((cmd->base.speed == SPEED_1000) &&
 167	    (cmd->base.duplex != DUPLEX_FULL)) {
 168		netif_dbg(efx, drv, efx->net_dev,
 169			  "rejecting unsupported 1000Mbps HD setting\n");
 170		return -EINVAL;
 171	}
 172
 173	mutex_lock(&efx->mac_lock);
 174	rc = efx->phy_op->set_link_ksettings(efx, cmd);
 175	mutex_unlock(&efx->mac_lock);
 176	return rc;
 177}
 178
 179static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 180				    struct ethtool_drvinfo *info)
 181{
 182	struct efx_nic *efx = netdev_priv(net_dev);
 183
 184	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 185	strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 186	efx_mcdi_print_fwver(efx, info->fw_version,
 187			     sizeof(info->fw_version));
 188	strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 189}
 190
 191static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 192{
 193	return efx_nic_get_regs_len(netdev_priv(net_dev));
 194}
 195
 196static void efx_ethtool_get_regs(struct net_device *net_dev,
 197				 struct ethtool_regs *regs, void *buf)
 198{
 199	struct efx_nic *efx = netdev_priv(net_dev);
 200
 201	regs->version = efx->type->revision;
 202	efx_nic_get_regs(efx, buf);
 203}
 204
 205static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 206{
 207	struct efx_nic *efx = netdev_priv(net_dev);
 208	return efx->msg_enable;
 209}
 210
 211static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 212{
 213	struct efx_nic *efx = netdev_priv(net_dev);
 214	efx->msg_enable = msg_enable;
 215}
 216
 217/**
 218 * efx_fill_test - fill in an individual self-test entry
 219 * @test_index:		Index of the test
 220 * @strings:		Ethtool strings, or %NULL
 221 * @data:		Ethtool test results, or %NULL
 222 * @test:		Pointer to test result (used only if data != %NULL)
 223 * @unit_format:	Unit name format (e.g. "chan\%d")
 224 * @unit_id:		Unit id (e.g. 0 for "chan0")
 225 * @test_format:	Test name format (e.g. "loopback.\%s.tx.sent")
 226 * @test_id:		Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 227 *
 228 * Fill in an individual self-test entry.
 229 */
 230static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data,
 231			  int *test, const char *unit_format, int unit_id,
 232			  const char *test_format, const char *test_id)
 233{
 234	char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN];
 235
 236	/* Fill data value, if applicable */
 237	if (data)
 238		data[test_index] = *test;
 239
 240	/* Fill string, if applicable */
 241	if (strings) {
 242		if (strchr(unit_format, '%'))
 243			snprintf(unit_str, sizeof(unit_str),
 244				 unit_format, unit_id);
 245		else
 246			strcpy(unit_str, unit_format);
 247		snprintf(test_str, sizeof(test_str), test_format, test_id);
 248		snprintf(strings + test_index * ETH_GSTRING_LEN,
 249			 ETH_GSTRING_LEN,
 250			 "%-6s %-24s", unit_str, test_str);
 251	}
 252}
 253
 254#define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 255#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 256#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 257#define EFX_LOOPBACK_NAME(_mode, _counter)			\
 258	"loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 259
 260/**
 261 * efx_fill_loopback_test - fill in a block of loopback self-test entries
 262 * @efx:		Efx NIC
 263 * @lb_tests:		Efx loopback self-test results structure
 264 * @mode:		Loopback test mode
 265 * @test_index:		Starting index of the test
 266 * @strings:		Ethtool strings, or %NULL
 267 * @data:		Ethtool test results, or %NULL
 268 *
 269 * Fill in a block of loopback self-test entries.  Return new test
 270 * index.
 271 */
 272static int efx_fill_loopback_test(struct efx_nic *efx,
 273				  struct efx_loopback_self_tests *lb_tests,
 274				  enum efx_loopback_mode mode,
 275				  unsigned int test_index,
 276				  u8 *strings, u64 *data)
 277{
 278	struct efx_channel *channel =
 279		efx_get_channel(efx, efx->tx_channel_offset);
 280	struct efx_tx_queue *tx_queue;
 281
 282	efx_for_each_channel_tx_queue(tx_queue, channel) {
 283		efx_fill_test(test_index++, strings, data,
 284			      &lb_tests->tx_sent[tx_queue->queue],
 285			      EFX_TX_QUEUE_NAME(tx_queue),
 286			      EFX_LOOPBACK_NAME(mode, "tx_sent"));
 287		efx_fill_test(test_index++, strings, data,
 288			      &lb_tests->tx_done[tx_queue->queue],
 289			      EFX_TX_QUEUE_NAME(tx_queue),
 290			      EFX_LOOPBACK_NAME(mode, "tx_done"));
 291	}
 292	efx_fill_test(test_index++, strings, data,
 293		      &lb_tests->rx_good,
 294		      "rx", 0,
 295		      EFX_LOOPBACK_NAME(mode, "rx_good"));
 296	efx_fill_test(test_index++, strings, data,
 297		      &lb_tests->rx_bad,
 298		      "rx", 0,
 299		      EFX_LOOPBACK_NAME(mode, "rx_bad"));
 300
 301	return test_index;
 302}
 303
 304/**
 305 * efx_ethtool_fill_self_tests - get self-test details
 306 * @efx:		Efx NIC
 307 * @tests:		Efx self-test results structure, or %NULL
 308 * @strings:		Ethtool strings, or %NULL
 309 * @data:		Ethtool test results, or %NULL
 310 *
 311 * Get self-test number of strings, strings, and/or test results.
 312 * Return number of strings (== number of test results).
 313 *
 314 * The reason for merging these three functions is to make sure that
 315 * they can never be inconsistent.
 316 */
 317static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 318				       struct efx_self_tests *tests,
 319				       u8 *strings, u64 *data)
 320{
 321	struct efx_channel *channel;
 322	unsigned int n = 0, i;
 323	enum efx_loopback_mode mode;
 324
 325	efx_fill_test(n++, strings, data, &tests->phy_alive,
 326		      "phy", 0, "alive", NULL);
 327	efx_fill_test(n++, strings, data, &tests->nvram,
 328		      "core", 0, "nvram", NULL);
 329	efx_fill_test(n++, strings, data, &tests->interrupt,
 330		      "core", 0, "interrupt", NULL);
 331
 332	/* Event queues */
 333	efx_for_each_channel(channel, efx) {
 334		efx_fill_test(n++, strings, data,
 335			      &tests->eventq_dma[channel->channel],
 336			      EFX_CHANNEL_NAME(channel),
 337			      "eventq.dma", NULL);
 338		efx_fill_test(n++, strings, data,
 339			      &tests->eventq_int[channel->channel],
 340			      EFX_CHANNEL_NAME(channel),
 341			      "eventq.int", NULL);
 342	}
 343
 344	efx_fill_test(n++, strings, data, &tests->memory,
 345		      "core", 0, "memory", NULL);
 346	efx_fill_test(n++, strings, data, &tests->registers,
 347		      "core", 0, "registers", NULL);
 348
 349	if (efx->phy_op->run_tests != NULL) {
 350		EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
 351
 352		for (i = 0; true; ++i) {
 353			const char *name;
 354
 355			EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 356			name = efx->phy_op->test_name(efx, i);
 357			if (name == NULL)
 358				break;
 359
 360			efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 361				      "phy", 0, name, NULL);
 362		}
 363	}
 364
 365	/* Loopback tests */
 366	for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 367		if (!(efx->loopback_modes & (1 << mode)))
 368			continue;
 369		n = efx_fill_loopback_test(efx,
 370					   &tests->loopback[mode], mode, n,
 371					   strings, data);
 372	}
 373
 374	return n;
 375}
 376
 377static size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings)
 378{
 379	size_t n_stats = 0;
 380	struct efx_channel *channel;
 381
 382	efx_for_each_channel(channel, efx) {
 383		if (efx_channel_has_tx_queues(channel)) {
 384			n_stats++;
 385			if (strings != NULL) {
 386				snprintf(strings, ETH_GSTRING_LEN,
 387					 "tx-%u.tx_packets",
 388					 channel->tx_queue[0].queue /
 389					 EFX_TXQ_TYPES);
 390
 391				strings += ETH_GSTRING_LEN;
 392			}
 393		}
 394	}
 395	efx_for_each_channel(channel, efx) {
 396		if (efx_channel_has_rx_queue(channel)) {
 397			n_stats++;
 398			if (strings != NULL) {
 399				snprintf(strings, ETH_GSTRING_LEN,
 400					 "rx-%d.rx_packets", channel->channel);
 401				strings += ETH_GSTRING_LEN;
 402			}
 403		}
 404	}
 405	return n_stats;
 406}
 407
 408static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 409				      int string_set)
 410{
 411	struct efx_nic *efx = netdev_priv(net_dev);
 412
 413	switch (string_set) {
 414	case ETH_SS_STATS:
 415		return efx->type->describe_stats(efx, NULL) +
 416		       EFX_ETHTOOL_SW_STAT_COUNT +
 417		       efx_describe_per_queue_stats(efx, NULL) +
 418		       efx_ptp_describe_stats(efx, NULL);
 419	case ETH_SS_TEST:
 420		return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
 421	default:
 422		return -EINVAL;
 423	}
 424}
 425
 426static void efx_ethtool_get_strings(struct net_device *net_dev,
 427				    u32 string_set, u8 *strings)
 428{
 429	struct efx_nic *efx = netdev_priv(net_dev);
 430	int i;
 431
 432	switch (string_set) {
 433	case ETH_SS_STATS:
 434		strings += (efx->type->describe_stats(efx, strings) *
 435			    ETH_GSTRING_LEN);
 436		for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++)
 437			strlcpy(strings + i * ETH_GSTRING_LEN,
 438				efx_sw_stat_desc[i].name, ETH_GSTRING_LEN);
 439		strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN;
 440		strings += (efx_describe_per_queue_stats(efx, strings) *
 441			    ETH_GSTRING_LEN);
 442		efx_ptp_describe_stats(efx, strings);
 443		break;
 444	case ETH_SS_TEST:
 445		efx_ethtool_fill_self_tests(efx, NULL, strings, NULL);
 446		break;
 447	default:
 448		/* No other string sets */
 449		break;
 450	}
 451}
 452
 453static void efx_ethtool_get_stats(struct net_device *net_dev,
 454				  struct ethtool_stats *stats,
 455				  u64 *data)
 456{
 457	struct efx_nic *efx = netdev_priv(net_dev);
 458	const struct efx_sw_stat_desc *stat;
 459	struct efx_channel *channel;
 460	struct efx_tx_queue *tx_queue;
 461	struct efx_rx_queue *rx_queue;
 462	int i;
 463
 464	spin_lock_bh(&efx->stats_lock);
 465
 466	/* Get NIC statistics */
 467	data += efx->type->update_stats(efx, data, NULL);
 468
 469	/* Get software statistics */
 470	for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) {
 471		stat = &efx_sw_stat_desc[i];
 472		switch (stat->source) {
 473		case EFX_ETHTOOL_STAT_SOURCE_nic:
 474			data[i] = stat->get_stat((void *)efx + stat->offset);
 475			break;
 476		case EFX_ETHTOOL_STAT_SOURCE_channel:
 477			data[i] = 0;
 478			efx_for_each_channel(channel, efx)
 479				data[i] += stat->get_stat((void *)channel +
 480							  stat->offset);
 481			break;
 482		case EFX_ETHTOOL_STAT_SOURCE_tx_queue:
 483			data[i] = 0;
 484			efx_for_each_channel(channel, efx) {
 485				efx_for_each_channel_tx_queue(tx_queue, channel)
 486					data[i] +=
 487						stat->get_stat((void *)tx_queue
 488							       + stat->offset);
 489			}
 490			break;
 491		}
 492	}
 493	data += EFX_ETHTOOL_SW_STAT_COUNT;
 494
 495	spin_unlock_bh(&efx->stats_lock);
 496
 497	efx_for_each_channel(channel, efx) {
 498		if (efx_channel_has_tx_queues(channel)) {
 499			*data = 0;
 500			efx_for_each_channel_tx_queue(tx_queue, channel) {
 501				*data += tx_queue->tx_packets;
 502			}
 503			data++;
 504		}
 505	}
 506	efx_for_each_channel(channel, efx) {
 507		if (efx_channel_has_rx_queue(channel)) {
 508			*data = 0;
 509			efx_for_each_channel_rx_queue(rx_queue, channel) {
 510				*data += rx_queue->rx_packets;
 511			}
 512			data++;
 513		}
 514	}
 515
 516	efx_ptp_update_stats(efx, data);
 517}
 518
 519static void efx_ethtool_self_test(struct net_device *net_dev,
 520				  struct ethtool_test *test, u64 *data)
 521{
 522	struct efx_nic *efx = netdev_priv(net_dev);
 523	struct efx_self_tests *efx_tests;
 524	bool already_up;
 525	int rc = -ENOMEM;
 526
 527	efx_tests = kzalloc(sizeof(*efx_tests), GFP_KERNEL);
 528	if (!efx_tests)
 529		goto fail;
 530
 531	if (efx->state != STATE_READY) {
 532		rc = -EBUSY;
 533		goto out;
 534	}
 535
 536	netif_info(efx, drv, efx->net_dev, "starting %sline testing\n",
 537		   (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 538
 539	/* We need rx buffers and interrupts. */
 540	already_up = (efx->net_dev->flags & IFF_UP);
 541	if (!already_up) {
 542		rc = dev_open(efx->net_dev);
 543		if (rc) {
 544			netif_err(efx, drv, efx->net_dev,
 545				  "failed opening device.\n");
 546			goto out;
 547		}
 548	}
 549
 550	rc = efx_selftest(efx, efx_tests, test->flags);
 551
 552	if (!already_up)
 553		dev_close(efx->net_dev);
 554
 555	netif_info(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 556		   rc == 0 ? "passed" : "failed",
 557		   (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 558
 559out:
 560	efx_ethtool_fill_self_tests(efx, efx_tests, NULL, data);
 561	kfree(efx_tests);
 562fail:
 563	if (rc)
 564		test->flags |= ETH_TEST_FL_FAILED;
 565}
 566
 567/* Restart autonegotiation */
 568static int efx_ethtool_nway_reset(struct net_device *net_dev)
 569{
 570	struct efx_nic *efx = netdev_priv(net_dev);
 571
 572	return mdio45_nway_restart(&efx->mdio);
 573}
 574
 575/*
 576 * Each channel has a single IRQ and moderation timer, started by any
 577 * completion (or other event).  Unless the module parameter
 578 * separate_tx_channels is set, IRQs and moderation are therefore
 579 * shared between RX and TX completions.  In this case, when RX IRQ
 580 * moderation is explicitly changed then TX IRQ moderation is
 581 * automatically changed too, but otherwise we fail if the two values
 582 * are requested to be different.
 583 *
 584 * The hardware does not support a limit on the number of completions
 585 * before an IRQ, so we do not use the max_frames fields.  We should
 586 * report and require that max_frames == (usecs != 0), but this would
 587 * invalidate existing user documentation.
 588 *
 589 * The hardware does not have distinct settings for interrupt
 590 * moderation while the previous IRQ is being handled, so we should
 591 * not use the 'irq' fields.  However, an earlier developer
 592 * misunderstood the meaning of the 'irq' fields and the driver did
 593 * not support the standard fields.  To avoid invalidating existing
 594 * user documentation, we report and accept changes through either the
 595 * standard or 'irq' fields.  If both are changed at the same time, we
 596 * prefer the standard field.
 597 *
 598 * We implement adaptive IRQ moderation, but use a different algorithm
 599 * from that assumed in the definition of struct ethtool_coalesce.
 600 * Therefore we do not use any of the adaptive moderation parameters
 601 * in it.
 602 */
 603
 604static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 605				    struct ethtool_coalesce *coalesce)
 
 
 606{
 607	struct efx_nic *efx = netdev_priv(net_dev);
 608	unsigned int tx_usecs, rx_usecs;
 609	bool rx_adaptive;
 610
 611	efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
 612
 613	coalesce->tx_coalesce_usecs = tx_usecs;
 614	coalesce->tx_coalesce_usecs_irq = tx_usecs;
 615	coalesce->rx_coalesce_usecs = rx_usecs;
 616	coalesce->rx_coalesce_usecs_irq = rx_usecs;
 617	coalesce->use_adaptive_rx_coalesce = rx_adaptive;
 618
 619	return 0;
 620}
 621
 622static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 623				    struct ethtool_coalesce *coalesce)
 
 
 624{
 625	struct efx_nic *efx = netdev_priv(net_dev);
 626	struct efx_channel *channel;
 627	unsigned int tx_usecs, rx_usecs;
 628	bool adaptive, rx_may_override_tx;
 629	int rc;
 630
 631	if (coalesce->use_adaptive_tx_coalesce)
 632		return -EINVAL;
 633
 634	efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
 635
 636	if (coalesce->rx_coalesce_usecs != rx_usecs)
 637		rx_usecs = coalesce->rx_coalesce_usecs;
 638	else
 639		rx_usecs = coalesce->rx_coalesce_usecs_irq;
 640
 641	adaptive = coalesce->use_adaptive_rx_coalesce;
 642
 643	/* If channels are shared, TX IRQ moderation can be quietly
 644	 * overridden unless it is changed from its old value.
 645	 */
 646	rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
 647			      coalesce->tx_coalesce_usecs_irq == tx_usecs);
 648	if (coalesce->tx_coalesce_usecs != tx_usecs)
 649		tx_usecs = coalesce->tx_coalesce_usecs;
 650	else
 651		tx_usecs = coalesce->tx_coalesce_usecs_irq;
 652
 653	rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
 654				     rx_may_override_tx);
 655	if (rc != 0)
 656		return rc;
 657
 658	efx_for_each_channel(channel, efx)
 659		efx->type->push_irq_moderation(channel);
 660
 661	return 0;
 662}
 663
 664static void efx_ethtool_get_ringparam(struct net_device *net_dev,
 665				      struct ethtool_ringparam *ring)
 
 
 
 666{
 667	struct efx_nic *efx = netdev_priv(net_dev);
 668
 669	ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
 670	ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx);
 671	ring->rx_pending = efx->rxq_entries;
 672	ring->tx_pending = efx->txq_entries;
 673}
 674
 675static int efx_ethtool_set_ringparam(struct net_device *net_dev,
 676				     struct ethtool_ringparam *ring)
 
 
 
 677{
 678	struct efx_nic *efx = netdev_priv(net_dev);
 679	u32 txq_entries;
 680
 681	if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
 682	    ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
 683	    ring->tx_pending > EFX_TXQ_MAX_ENT(efx))
 684		return -EINVAL;
 685
 686	if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
 687		netif_err(efx, drv, efx->net_dev,
 688			  "RX queues cannot be smaller than %u\n",
 689			  EFX_RXQ_MIN_ENT);
 690		return -EINVAL;
 691	}
 692
 693	txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
 694	if (txq_entries != ring->tx_pending)
 695		netif_warn(efx, drv, efx->net_dev,
 696			   "increasing TX queue size to minimum of %u\n",
 697			   txq_entries);
 698
 699	return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
 700}
 701
 702static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 703				      struct ethtool_pauseparam *pause)
 704{
 705	struct efx_nic *efx = netdev_priv(net_dev);
 706	u8 wanted_fc, old_fc;
 707	u32 old_adv;
 708	int rc = 0;
 709
 710	mutex_lock(&efx->mac_lock);
 711
 712	wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 713		     (pause->tx_pause ? EFX_FC_TX : 0) |
 714		     (pause->autoneg ? EFX_FC_AUTO : 0));
 715
 716	if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 717		netif_dbg(efx, drv, efx->net_dev,
 718			  "Flow control unsupported: tx ON rx OFF\n");
 719		rc = -EINVAL;
 720		goto out;
 721	}
 722
 723	if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising[0]) {
 724		netif_dbg(efx, drv, efx->net_dev,
 725			  "Autonegotiation is disabled\n");
 726		rc = -EINVAL;
 727		goto out;
 728	}
 729
 730	/* Hook for Falcon bug 11482 workaround */
 731	if (efx->type->prepare_enable_fc_tx &&
 732	    (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX))
 733		efx->type->prepare_enable_fc_tx(efx);
 734
 735	old_adv = efx->link_advertising[0];
 736	old_fc = efx->wanted_fc;
 737	efx_link_set_wanted_fc(efx, wanted_fc);
 738	if (efx->link_advertising[0] != old_adv ||
 739	    (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 740		rc = efx->phy_op->reconfigure(efx);
 741		if (rc) {
 742			netif_err(efx, drv, efx->net_dev,
 743				  "Unable to advertise requested flow "
 744				  "control setting\n");
 745			goto out;
 746		}
 747	}
 748
 749	/* Reconfigure the MAC. The PHY *may* generate a link state change event
 750	 * if the user just changed the advertised capabilities, but there's no
 751	 * harm doing this twice */
 752	efx_mac_reconfigure(efx);
 753
 754out:
 755	mutex_unlock(&efx->mac_lock);
 756
 757	return rc;
 758}
 759
 760static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 761				       struct ethtool_pauseparam *pause)
 762{
 763	struct efx_nic *efx = netdev_priv(net_dev);
 764
 765	pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 766	pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 767	pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 768}
 769
 770static void efx_ethtool_get_wol(struct net_device *net_dev,
 771				struct ethtool_wolinfo *wol)
 772{
 773	struct efx_nic *efx = netdev_priv(net_dev);
 774	return efx->type->get_wol(efx, wol);
 775}
 776
 777
 778static int efx_ethtool_set_wol(struct net_device *net_dev,
 779			       struct ethtool_wolinfo *wol)
 780{
 781	struct efx_nic *efx = netdev_priv(net_dev);
 782	return efx->type->set_wol(efx, wol->wolopts);
 783}
 784
 785static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 786{
 787	struct efx_nic *efx = netdev_priv(net_dev);
 788	int rc;
 789
 790	rc = efx->type->map_reset_flags(flags);
 791	if (rc < 0)
 792		return rc;
 793
 794	return efx_reset(efx, rc);
 795}
 796
 797/* MAC address mask including only I/G bit */
 798static const u8 mac_addr_ig_mask[ETH_ALEN] __aligned(2) = {0x01, 0, 0, 0, 0, 0};
 799
 800#define IP4_ADDR_FULL_MASK	((__force __be32)~0)
 801#define IP_PROTO_FULL_MASK	0xFF
 802#define PORT_FULL_MASK		((__force __be16)~0)
 803#define ETHER_TYPE_FULL_MASK	((__force __be16)~0)
 804
 805static inline void ip6_fill_mask(__be32 *mask)
 806{
 807	mask[0] = mask[1] = mask[2] = mask[3] = ~(__be32)0;
 808}
 809
 810static int efx_ethtool_get_class_rule(struct efx_nic *efx,
 811				      struct ethtool_rx_flow_spec *rule,
 812				      u32 *rss_context)
 813{
 814	struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
 815	struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
 816	struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
 817	struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
 818	struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
 819	struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
 820	struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
 821	struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
 822	struct ethhdr *mac_entry = &rule->h_u.ether_spec;
 823	struct ethhdr *mac_mask = &rule->m_u.ether_spec;
 824	struct efx_filter_spec spec;
 825	int rc;
 826
 827	rc = efx_filter_get_filter_safe(efx, EFX_FILTER_PRI_MANUAL,
 828					rule->location, &spec);
 829	if (rc)
 830		return rc;
 831
 832	if (spec.dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP)
 833		rule->ring_cookie = RX_CLS_FLOW_DISC;
 834	else
 835		rule->ring_cookie = spec.dmaq_id;
 836
 837	if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
 838	    spec.ether_type == htons(ETH_P_IP) &&
 839	    (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
 840	    (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
 841	    !(spec.match_flags &
 842	      ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 843		EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 844		EFX_FILTER_MATCH_IP_PROTO |
 845		EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
 846		rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
 847				   TCP_V4_FLOW : UDP_V4_FLOW);
 848		if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 849			ip_entry->ip4dst = spec.loc_host[0];
 850			ip_mask->ip4dst = IP4_ADDR_FULL_MASK;
 851		}
 852		if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 853			ip_entry->ip4src = spec.rem_host[0];
 854			ip_mask->ip4src = IP4_ADDR_FULL_MASK;
 855		}
 856		if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
 857			ip_entry->pdst = spec.loc_port;
 858			ip_mask->pdst = PORT_FULL_MASK;
 859		}
 860		if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
 861			ip_entry->psrc = spec.rem_port;
 862			ip_mask->psrc = PORT_FULL_MASK;
 863		}
 864	} else if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
 865	    spec.ether_type == htons(ETH_P_IPV6) &&
 866	    (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
 867	    (spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
 868	    !(spec.match_flags &
 869	      ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 870		EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 871		EFX_FILTER_MATCH_IP_PROTO |
 872		EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
 873		rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
 874				   TCP_V6_FLOW : UDP_V6_FLOW);
 875		if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 876			memcpy(ip6_entry->ip6dst, spec.loc_host,
 877			       sizeof(ip6_entry->ip6dst));
 878			ip6_fill_mask(ip6_mask->ip6dst);
 879		}
 880		if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 881			memcpy(ip6_entry->ip6src, spec.rem_host,
 882			       sizeof(ip6_entry->ip6src));
 883			ip6_fill_mask(ip6_mask->ip6src);
 884		}
 885		if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
 886			ip6_entry->pdst = spec.loc_port;
 887			ip6_mask->pdst = PORT_FULL_MASK;
 888		}
 889		if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
 890			ip6_entry->psrc = spec.rem_port;
 891			ip6_mask->psrc = PORT_FULL_MASK;
 892		}
 893	} else if (!(spec.match_flags &
 894		     ~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG |
 895		       EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE |
 896		       EFX_FILTER_MATCH_OUTER_VID))) {
 897		rule->flow_type = ETHER_FLOW;
 898		if (spec.match_flags &
 899		    (EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG)) {
 900			ether_addr_copy(mac_entry->h_dest, spec.loc_mac);
 901			if (spec.match_flags & EFX_FILTER_MATCH_LOC_MAC)
 902				eth_broadcast_addr(mac_mask->h_dest);
 903			else
 904				ether_addr_copy(mac_mask->h_dest,
 905						mac_addr_ig_mask);
 906		}
 907		if (spec.match_flags & EFX_FILTER_MATCH_REM_MAC) {
 908			ether_addr_copy(mac_entry->h_source, spec.rem_mac);
 909			eth_broadcast_addr(mac_mask->h_source);
 910		}
 911		if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
 912			mac_entry->h_proto = spec.ether_type;
 913			mac_mask->h_proto = ETHER_TYPE_FULL_MASK;
 914		}
 915	} else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
 916		   spec.ether_type == htons(ETH_P_IP) &&
 917		   !(spec.match_flags &
 918		     ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 919		       EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 920		       EFX_FILTER_MATCH_IP_PROTO))) {
 921		rule->flow_type = IPV4_USER_FLOW;
 922		uip_entry->ip_ver = ETH_RX_NFC_IP4;
 923		if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
 924			uip_mask->proto = IP_PROTO_FULL_MASK;
 925			uip_entry->proto = spec.ip_proto;
 926		}
 927		if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 928			uip_entry->ip4dst = spec.loc_host[0];
 929			uip_mask->ip4dst = IP4_ADDR_FULL_MASK;
 930		}
 931		if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 932			uip_entry->ip4src = spec.rem_host[0];
 933			uip_mask->ip4src = IP4_ADDR_FULL_MASK;
 934		}
 935	} else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
 936		   spec.ether_type == htons(ETH_P_IPV6) &&
 937		   !(spec.match_flags &
 938		     ~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
 939		       EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
 940		       EFX_FILTER_MATCH_IP_PROTO))) {
 941		rule->flow_type = IPV6_USER_FLOW;
 942		if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
 943			uip6_mask->l4_proto = IP_PROTO_FULL_MASK;
 944			uip6_entry->l4_proto = spec.ip_proto;
 945		}
 946		if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
 947			memcpy(uip6_entry->ip6dst, spec.loc_host,
 948			       sizeof(uip6_entry->ip6dst));
 949			ip6_fill_mask(uip6_mask->ip6dst);
 950		}
 951		if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
 952			memcpy(uip6_entry->ip6src, spec.rem_host,
 953			       sizeof(uip6_entry->ip6src));
 954			ip6_fill_mask(uip6_mask->ip6src);
 955		}
 956	} else {
 957		/* The above should handle all filters that we insert */
 958		WARN_ON(1);
 959		return -EINVAL;
 960	}
 961
 962	if (spec.match_flags & EFX_FILTER_MATCH_OUTER_VID) {
 963		rule->flow_type |= FLOW_EXT;
 964		rule->h_ext.vlan_tci = spec.outer_vid;
 965		rule->m_ext.vlan_tci = htons(0xfff);
 966	}
 967
 968	if (spec.flags & EFX_FILTER_FLAG_RX_RSS) {
 969		rule->flow_type |= FLOW_RSS;
 970		*rss_context = spec.rss_context;
 971	}
 972
 973	return rc;
 974}
 975
 976static int
 977efx_ethtool_get_rxnfc(struct net_device *net_dev,
 978		      struct ethtool_rxnfc *info, u32 *rule_locs)
 979{
 980	struct efx_nic *efx = netdev_priv(net_dev);
 981	u32 rss_context = 0;
 982	s32 rc = 0;
 983
 984	switch (info->cmd) {
 985	case ETHTOOL_GRXRINGS:
 986		info->data = efx->n_rx_channels;
 987		return 0;
 988
 989	case ETHTOOL_GRXFH: {
 990		struct efx_rss_context *ctx = &efx->rss_context;
 991
 992		mutex_lock(&efx->rss_lock);
 993		if (info->flow_type & FLOW_RSS && info->rss_context) {
 994			ctx = efx_find_rss_context_entry(efx, info->rss_context);
 995			if (!ctx) {
 996				rc = -ENOENT;
 997				goto out_unlock;
 998			}
 999		}
1000		info->data = 0;
1001		if (!efx_rss_active(ctx)) /* No RSS */
1002			goto out_unlock;
1003		switch (info->flow_type & ~FLOW_RSS) {
1004		case UDP_V4_FLOW:
1005			if (ctx->rx_hash_udp_4tuple)
1006				/* fall through */
1007		case TCP_V4_FLOW:
1008				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1009			/* fall through */
1010		case SCTP_V4_FLOW:
1011		case AH_ESP_V4_FLOW:
1012		case IPV4_FLOW:
1013			info->data |= RXH_IP_SRC | RXH_IP_DST;
1014			break;
1015		case UDP_V6_FLOW:
1016			if (ctx->rx_hash_udp_4tuple)
1017				/* fall through */
1018		case TCP_V6_FLOW:
1019				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1020			/* fall through */
1021		case SCTP_V6_FLOW:
1022		case AH_ESP_V6_FLOW:
1023		case IPV6_FLOW:
1024			info->data |= RXH_IP_SRC | RXH_IP_DST;
1025			break;
1026		default:
1027			break;
1028		}
1029out_unlock:
1030		mutex_unlock(&efx->rss_lock);
1031		return rc;
1032	}
1033
1034	case ETHTOOL_GRXCLSRLCNT:
1035		info->data = efx_filter_get_rx_id_limit(efx);
1036		if (info->data == 0)
1037			return -EOPNOTSUPP;
1038		info->data |= RX_CLS_LOC_SPECIAL;
1039		info->rule_cnt =
1040			efx_filter_count_rx_used(efx, EFX_FILTER_PRI_MANUAL);
1041		return 0;
1042
1043	case ETHTOOL_GRXCLSRULE:
1044		if (efx_filter_get_rx_id_limit(efx) == 0)
1045			return -EOPNOTSUPP;
1046		rc = efx_ethtool_get_class_rule(efx, &info->fs, &rss_context);
1047		if (rc < 0)
1048			return rc;
1049		if (info->fs.flow_type & FLOW_RSS)
1050			info->rss_context = rss_context;
1051		return 0;
1052
1053	case ETHTOOL_GRXCLSRLALL:
1054		info->data = efx_filter_get_rx_id_limit(efx);
1055		if (info->data == 0)
1056			return -EOPNOTSUPP;
1057		rc = efx_filter_get_rx_ids(efx, EFX_FILTER_PRI_MANUAL,
1058					   rule_locs, info->rule_cnt);
1059		if (rc < 0)
1060			return rc;
1061		info->rule_cnt = rc;
1062		return 0;
1063
1064	default:
1065		return -EOPNOTSUPP;
1066	}
1067}
1068
1069static inline bool ip6_mask_is_full(__be32 mask[4])
1070{
1071	return !~(mask[0] & mask[1] & mask[2] & mask[3]);
1072}
1073
1074static inline bool ip6_mask_is_empty(__be32 mask[4])
1075{
1076	return !(mask[0] | mask[1] | mask[2] | mask[3]);
1077}
1078
1079static int efx_ethtool_set_class_rule(struct efx_nic *efx,
1080				      struct ethtool_rx_flow_spec *rule,
1081				      u32 rss_context)
1082{
1083	struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
1084	struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
1085	struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
1086	struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
1087	struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
1088	struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
1089	struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
1090	struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
1091	u32 flow_type = rule->flow_type & ~(FLOW_EXT | FLOW_RSS);
1092	struct ethhdr *mac_entry = &rule->h_u.ether_spec;
1093	struct ethhdr *mac_mask = &rule->m_u.ether_spec;
1094	enum efx_filter_flags flags = 0;
1095	struct efx_filter_spec spec;
1096	int rc;
1097
1098	/* Check that user wants us to choose the location */
1099	if (rule->location != RX_CLS_LOC_ANY)
1100		return -EINVAL;
1101
1102	/* Range-check ring_cookie */
1103	if (rule->ring_cookie >= efx->n_rx_channels &&
1104	    rule->ring_cookie != RX_CLS_FLOW_DISC)
1105		return -EINVAL;
1106
1107	/* Check for unsupported extensions */
1108	if ((rule->flow_type & FLOW_EXT) &&
1109	    (rule->m_ext.vlan_etype || rule->m_ext.data[0] ||
1110	     rule->m_ext.data[1]))
1111		return -EINVAL;
1112
1113	if (efx->rx_scatter)
1114		flags |= EFX_FILTER_FLAG_RX_SCATTER;
1115	if (rule->flow_type & FLOW_RSS)
1116		flags |= EFX_FILTER_FLAG_RX_RSS;
1117
1118	efx_filter_init_rx(&spec, EFX_FILTER_PRI_MANUAL, flags,
1119			   (rule->ring_cookie == RX_CLS_FLOW_DISC) ?
1120			   EFX_FILTER_RX_DMAQ_ID_DROP : rule->ring_cookie);
1121
1122	if (rule->flow_type & FLOW_RSS)
1123		spec.rss_context = rss_context;
1124
1125	switch (flow_type) {
1126	case TCP_V4_FLOW:
1127	case UDP_V4_FLOW:
1128		spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
1129				    EFX_FILTER_MATCH_IP_PROTO);
1130		spec.ether_type = htons(ETH_P_IP);
1131		spec.ip_proto = flow_type == TCP_V4_FLOW ? IPPROTO_TCP
1132							 : IPPROTO_UDP;
1133		if (ip_mask->ip4dst) {
1134			if (ip_mask->ip4dst != IP4_ADDR_FULL_MASK)
1135				return -EINVAL;
1136			spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1137			spec.loc_host[0] = ip_entry->ip4dst;
1138		}
1139		if (ip_mask->ip4src) {
1140			if (ip_mask->ip4src != IP4_ADDR_FULL_MASK)
1141				return -EINVAL;
1142			spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1143			spec.rem_host[0] = ip_entry->ip4src;
1144		}
1145		if (ip_mask->pdst) {
1146			if (ip_mask->pdst != PORT_FULL_MASK)
1147				return -EINVAL;
1148			spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
1149			spec.loc_port = ip_entry->pdst;
1150		}
1151		if (ip_mask->psrc) {
1152			if (ip_mask->psrc != PORT_FULL_MASK)
1153				return -EINVAL;
1154			spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
1155			spec.rem_port = ip_entry->psrc;
1156		}
1157		if (ip_mask->tos)
1158			return -EINVAL;
1159		break;
1160
1161	case TCP_V6_FLOW:
1162	case UDP_V6_FLOW:
1163		spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
1164				    EFX_FILTER_MATCH_IP_PROTO);
1165		spec.ether_type = htons(ETH_P_IPV6);
1166		spec.ip_proto = flow_type == TCP_V6_FLOW ? IPPROTO_TCP
1167							 : IPPROTO_UDP;
1168		if (!ip6_mask_is_empty(ip6_mask->ip6dst)) {
1169			if (!ip6_mask_is_full(ip6_mask->ip6dst))
1170				return -EINVAL;
1171			spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1172			memcpy(spec.loc_host, ip6_entry->ip6dst, sizeof(spec.loc_host));
1173		}
1174		if (!ip6_mask_is_empty(ip6_mask->ip6src)) {
1175			if (!ip6_mask_is_full(ip6_mask->ip6src))
1176				return -EINVAL;
1177			spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1178			memcpy(spec.rem_host, ip6_entry->ip6src, sizeof(spec.rem_host));
1179		}
1180		if (ip6_mask->pdst) {
1181			if (ip6_mask->pdst != PORT_FULL_MASK)
1182				return -EINVAL;
1183			spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
1184			spec.loc_port = ip6_entry->pdst;
1185		}
1186		if (ip6_mask->psrc) {
1187			if (ip6_mask->psrc != PORT_FULL_MASK)
1188				return -EINVAL;
1189			spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
1190			spec.rem_port = ip6_entry->psrc;
1191		}
1192		if (ip6_mask->tclass)
1193			return -EINVAL;
1194		break;
1195
1196	case IPV4_USER_FLOW:
1197		if (uip_mask->l4_4_bytes || uip_mask->tos || uip_mask->ip_ver ||
1198		    uip_entry->ip_ver != ETH_RX_NFC_IP4)
1199			return -EINVAL;
1200		spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
1201		spec.ether_type = htons(ETH_P_IP);
1202		if (uip_mask->ip4dst) {
1203			if (uip_mask->ip4dst != IP4_ADDR_FULL_MASK)
1204				return -EINVAL;
1205			spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1206			spec.loc_host[0] = uip_entry->ip4dst;
1207		}
1208		if (uip_mask->ip4src) {
1209			if (uip_mask->ip4src != IP4_ADDR_FULL_MASK)
1210				return -EINVAL;
1211			spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1212			spec.rem_host[0] = uip_entry->ip4src;
1213		}
1214		if (uip_mask->proto) {
1215			if (uip_mask->proto != IP_PROTO_FULL_MASK)
1216				return -EINVAL;
1217			spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
1218			spec.ip_proto = uip_entry->proto;
1219		}
1220		break;
1221
1222	case IPV6_USER_FLOW:
1223		if (uip6_mask->l4_4_bytes || uip6_mask->tclass)
1224			return -EINVAL;
1225		spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
1226		spec.ether_type = htons(ETH_P_IPV6);
1227		if (!ip6_mask_is_empty(uip6_mask->ip6dst)) {
1228			if (!ip6_mask_is_full(uip6_mask->ip6dst))
1229				return -EINVAL;
1230			spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
1231			memcpy(spec.loc_host, uip6_entry->ip6dst, sizeof(spec.loc_host));
1232		}
1233		if (!ip6_mask_is_empty(uip6_mask->ip6src)) {
1234			if (!ip6_mask_is_full(uip6_mask->ip6src))
1235				return -EINVAL;
1236			spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
1237			memcpy(spec.rem_host, uip6_entry->ip6src, sizeof(spec.rem_host));
1238		}
1239		if (uip6_mask->l4_proto) {
1240			if (uip6_mask->l4_proto != IP_PROTO_FULL_MASK)
1241				return -EINVAL;
1242			spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
1243			spec.ip_proto = uip6_entry->l4_proto;
1244		}
1245		break;
1246
1247	case ETHER_FLOW:
1248		if (!is_zero_ether_addr(mac_mask->h_dest)) {
1249			if (ether_addr_equal(mac_mask->h_dest,
1250					     mac_addr_ig_mask))
1251				spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
1252			else if (is_broadcast_ether_addr(mac_mask->h_dest))
1253				spec.match_flags |= EFX_FILTER_MATCH_LOC_MAC;
1254			else
1255				return -EINVAL;
1256			ether_addr_copy(spec.loc_mac, mac_entry->h_dest);
1257		}
1258		if (!is_zero_ether_addr(mac_mask->h_source)) {
1259			if (!is_broadcast_ether_addr(mac_mask->h_source))
1260				return -EINVAL;
1261			spec.match_flags |= EFX_FILTER_MATCH_REM_MAC;
1262			ether_addr_copy(spec.rem_mac, mac_entry->h_source);
1263		}
1264		if (mac_mask->h_proto) {
1265			if (mac_mask->h_proto != ETHER_TYPE_FULL_MASK)
1266				return -EINVAL;
1267			spec.match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
1268			spec.ether_type = mac_entry->h_proto;
1269		}
1270		break;
1271
1272	default:
1273		return -EINVAL;
1274	}
1275
1276	if ((rule->flow_type & FLOW_EXT) && rule->m_ext.vlan_tci) {
1277		if (rule->m_ext.vlan_tci != htons(0xfff))
1278			return -EINVAL;
1279		spec.match_flags |= EFX_FILTER_MATCH_OUTER_VID;
1280		spec.outer_vid = rule->h_ext.vlan_tci;
1281	}
1282
1283	rc = efx_filter_insert_filter(efx, &spec, true);
1284	if (rc < 0)
1285		return rc;
1286
1287	rule->location = rc;
1288	return 0;
1289}
1290
1291static int efx_ethtool_set_rxnfc(struct net_device *net_dev,
1292				 struct ethtool_rxnfc *info)
1293{
1294	struct efx_nic *efx = netdev_priv(net_dev);
1295
1296	if (efx_filter_get_rx_id_limit(efx) == 0)
1297		return -EOPNOTSUPP;
1298
1299	switch (info->cmd) {
1300	case ETHTOOL_SRXCLSRLINS:
1301		return efx_ethtool_set_class_rule(efx, &info->fs,
1302						  info->rss_context);
1303
1304	case ETHTOOL_SRXCLSRLDEL:
1305		return efx_filter_remove_id_safe(efx, EFX_FILTER_PRI_MANUAL,
1306						 info->fs.location);
1307
1308	default:
1309		return -EOPNOTSUPP;
1310	}
1311}
1312
1313static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
1314{
1315	struct efx_nic *efx = netdev_priv(net_dev);
1316
1317	if (efx->n_rx_channels == 1)
1318		return 0;
1319	return ARRAY_SIZE(efx->rss_context.rx_indir_table);
1320}
1321
1322static u32 efx_ethtool_get_rxfh_key_size(struct net_device *net_dev)
1323{
1324	struct efx_nic *efx = netdev_priv(net_dev);
1325
1326	return efx->type->rx_hash_key_size;
1327}
1328
1329static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,
1330				u8 *hfunc)
1331{
1332	struct efx_nic *efx = netdev_priv(net_dev);
1333	int rc;
1334
1335	rc = efx->type->rx_pull_rss_config(efx);
1336	if (rc)
1337		return rc;
1338
1339	if (hfunc)
1340		*hfunc = ETH_RSS_HASH_TOP;
1341	if (indir)
1342		memcpy(indir, efx->rss_context.rx_indir_table,
1343		       sizeof(efx->rss_context.rx_indir_table));
1344	if (key)
1345		memcpy(key, efx->rss_context.rx_hash_key,
1346		       efx->type->rx_hash_key_size);
1347	return 0;
1348}
1349
1350static int efx_ethtool_set_rxfh(struct net_device *net_dev, const u32 *indir,
1351				const u8 *key, const u8 hfunc)
1352{
1353	struct efx_nic *efx = netdev_priv(net_dev);
1354
1355	/* Hash function is Toeplitz, cannot be changed */
1356	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1357		return -EOPNOTSUPP;
1358	if (!indir && !key)
1359		return 0;
1360
1361	if (!key)
1362		key = efx->rss_context.rx_hash_key;
1363	if (!indir)
1364		indir = efx->rss_context.rx_indir_table;
1365
1366	return efx->type->rx_push_rss_config(efx, true, indir, key);
1367}
1368
1369static int efx_ethtool_get_rxfh_context(struct net_device *net_dev, u32 *indir,
1370					u8 *key, u8 *hfunc, u32 rss_context)
1371{
1372	struct efx_nic *efx = netdev_priv(net_dev);
1373	struct efx_rss_context *ctx;
1374	int rc = 0;
1375
1376	if (!efx->type->rx_pull_rss_context_config)
1377		return -EOPNOTSUPP;
1378
1379	mutex_lock(&efx->rss_lock);
1380	ctx = efx_find_rss_context_entry(efx, rss_context);
1381	if (!ctx) {
1382		rc = -ENOENT;
1383		goto out_unlock;
1384	}
1385	rc = efx->type->rx_pull_rss_context_config(efx, ctx);
1386	if (rc)
1387		goto out_unlock;
1388
1389	if (hfunc)
1390		*hfunc = ETH_RSS_HASH_TOP;
1391	if (indir)
1392		memcpy(indir, ctx->rx_indir_table, sizeof(ctx->rx_indir_table));
1393	if (key)
1394		memcpy(key, ctx->rx_hash_key, efx->type->rx_hash_key_size);
1395out_unlock:
1396	mutex_unlock(&efx->rss_lock);
1397	return rc;
1398}
1399
1400static int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
1401					const u32 *indir, const u8 *key,
1402					const u8 hfunc, u32 *rss_context,
1403					bool delete)
1404{
1405	struct efx_nic *efx = netdev_priv(net_dev);
1406	struct efx_rss_context *ctx;
1407	bool allocated = false;
1408	int rc;
1409
1410	if (!efx->type->rx_push_rss_context_config)
1411		return -EOPNOTSUPP;
1412	/* Hash function is Toeplitz, cannot be changed */
1413	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1414		return -EOPNOTSUPP;
1415
1416	mutex_lock(&efx->rss_lock);
1417
1418	if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
1419		if (delete) {
1420			/* alloc + delete == Nothing to do */
1421			rc = -EINVAL;
1422			goto out_unlock;
1423		}
1424		ctx = efx_alloc_rss_context_entry(efx);
1425		if (!ctx) {
1426			rc = -ENOMEM;
1427			goto out_unlock;
1428		}
1429		ctx->context_id = EFX_EF10_RSS_CONTEXT_INVALID;
1430		/* Initialise indir table and key to defaults */
1431		efx_set_default_rx_indir_table(efx, ctx);
1432		netdev_rss_key_fill(ctx->rx_hash_key, sizeof(ctx->rx_hash_key));
1433		allocated = true;
1434	} else {
1435		ctx = efx_find_rss_context_entry(efx, *rss_context);
1436		if (!ctx) {
1437			rc = -ENOENT;
1438			goto out_unlock;
1439		}
1440	}
1441
1442	if (delete) {
1443		/* delete this context */
1444		rc = efx->type->rx_push_rss_context_config(efx, ctx, NULL, NULL);
1445		if (!rc)
1446			efx_free_rss_context_entry(ctx);
1447		goto out_unlock;
1448	}
1449
1450	if (!key)
1451		key = ctx->rx_hash_key;
1452	if (!indir)
1453		indir = ctx->rx_indir_table;
1454
1455	rc = efx->type->rx_push_rss_context_config(efx, ctx, indir, key);
1456	if (rc && allocated)
1457		efx_free_rss_context_entry(ctx);
1458	else
1459		*rss_context = ctx->user_id;
1460out_unlock:
1461	mutex_unlock(&efx->rss_lock);
1462	return rc;
1463}
1464
1465static int efx_ethtool_get_ts_info(struct net_device *net_dev,
1466				   struct ethtool_ts_info *ts_info)
1467{
1468	struct efx_nic *efx = netdev_priv(net_dev);
1469
1470	/* Software capabilities */
1471	ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE |
1472				    SOF_TIMESTAMPING_SOFTWARE);
1473	ts_info->phc_index = -1;
1474
1475	efx_ptp_get_ts_info(efx, ts_info);
1476	return 0;
1477}
1478
1479static int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
1480					 struct ethtool_eeprom *ee,
1481					 u8 *data)
1482{
1483	struct efx_nic *efx = netdev_priv(net_dev);
1484	int ret;
1485
1486	if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
1487		return -EOPNOTSUPP;
1488
1489	mutex_lock(&efx->mac_lock);
1490	ret = efx->phy_op->get_module_eeprom(efx, ee, data);
1491	mutex_unlock(&efx->mac_lock);
1492
1493	return ret;
1494}
1495
1496static int efx_ethtool_get_module_info(struct net_device *net_dev,
1497				       struct ethtool_modinfo *modinfo)
1498{
1499	struct efx_nic *efx = netdev_priv(net_dev);
1500	int ret;
1501
1502	if (!efx->phy_op || !efx->phy_op->get_module_info)
1503		return -EOPNOTSUPP;
1504
1505	mutex_lock(&efx->mac_lock);
1506	ret = efx->phy_op->get_module_info(efx, modinfo);
1507	mutex_unlock(&efx->mac_lock);
1508
1509	return ret;
1510}
1511
1512static int efx_ethtool_get_fecparam(struct net_device *net_dev,
1513				    struct ethtool_fecparam *fecparam)
1514{
1515	struct efx_nic *efx = netdev_priv(net_dev);
1516	int rc;
1517
1518	if (!efx->phy_op || !efx->phy_op->get_fecparam)
1519		return -EOPNOTSUPP;
1520	mutex_lock(&efx->mac_lock);
1521	rc = efx->phy_op->get_fecparam(efx, fecparam);
1522	mutex_unlock(&efx->mac_lock);
1523
1524	return rc;
1525}
1526
1527static int efx_ethtool_set_fecparam(struct net_device *net_dev,
1528				    struct ethtool_fecparam *fecparam)
1529{
1530	struct efx_nic *efx = netdev_priv(net_dev);
1531	int rc;
1532
1533	if (!efx->phy_op || !efx->phy_op->get_fecparam)
1534		return -EOPNOTSUPP;
1535	mutex_lock(&efx->mac_lock);
1536	rc = efx->phy_op->set_fecparam(efx, fecparam);
1537	mutex_unlock(&efx->mac_lock);
1538
1539	return rc;
1540}
1541
1542const struct ethtool_ops efx_ethtool_ops = {
 
 
 
1543	.get_drvinfo		= efx_ethtool_get_drvinfo,
1544	.get_regs_len		= efx_ethtool_get_regs_len,
1545	.get_regs		= efx_ethtool_get_regs,
1546	.get_msglevel		= efx_ethtool_get_msglevel,
1547	.set_msglevel		= efx_ethtool_set_msglevel,
1548	.nway_reset		= efx_ethtool_nway_reset,
1549	.get_link		= ethtool_op_get_link,
1550	.get_coalesce		= efx_ethtool_get_coalesce,
1551	.set_coalesce		= efx_ethtool_set_coalesce,
1552	.get_ringparam		= efx_ethtool_get_ringparam,
1553	.set_ringparam		= efx_ethtool_set_ringparam,
1554	.get_pauseparam         = efx_ethtool_get_pauseparam,
1555	.set_pauseparam         = efx_ethtool_set_pauseparam,
1556	.get_sset_count		= efx_ethtool_get_sset_count,
1557	.self_test		= efx_ethtool_self_test,
1558	.get_strings		= efx_ethtool_get_strings,
1559	.set_phys_id		= efx_ethtool_phys_id,
1560	.get_ethtool_stats	= efx_ethtool_get_stats,
1561	.get_wol                = efx_ethtool_get_wol,
1562	.set_wol                = efx_ethtool_set_wol,
1563	.reset			= efx_ethtool_reset,
1564	.get_rxnfc		= efx_ethtool_get_rxnfc,
1565	.set_rxnfc		= efx_ethtool_set_rxnfc,
1566	.get_rxfh_indir_size	= efx_ethtool_get_rxfh_indir_size,
1567	.get_rxfh_key_size	= efx_ethtool_get_rxfh_key_size,
 
 
 
1568	.get_rxfh		= efx_ethtool_get_rxfh,
1569	.set_rxfh		= efx_ethtool_set_rxfh,
1570	.get_rxfh_context	= efx_ethtool_get_rxfh_context,
1571	.set_rxfh_context	= efx_ethtool_set_rxfh_context,
 
1572	.get_ts_info		= efx_ethtool_get_ts_info,
1573	.get_module_info	= efx_ethtool_get_module_info,
1574	.get_module_eeprom	= efx_ethtool_get_module_eeprom,
1575	.get_link_ksettings	= efx_ethtool_get_link_ksettings,
1576	.set_link_ksettings	= efx_ethtool_set_link_ksettings,
 
1577	.get_fecparam		= efx_ethtool_get_fecparam,
1578	.set_fecparam		= efx_ethtool_set_fecparam,
1579};