Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2009 - 2018 Intel Corporation. */

/* ethtool support for igbvf */

#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>

#include "igbvf.h"
#include <linux/if_vlan.h>

struct igbvf_stats {
	char stat_string[ETH_GSTRING_LEN];
	int sizeof_stat;
	int stat_offset;
	int base_stat_offset;
};

#define IGBVF_STAT(current, base) \
		sizeof(((struct igbvf_adapter *)0)->current), \
		offsetof(struct igbvf_adapter, current), \
		offsetof(struct igbvf_adapter, base)

static const struct igbvf_stats igbvf_gstrings_stats[] = {
	{ "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
	{ "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
	{ "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
	{ "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
	{ "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
	{ "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
	{ "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
	{ "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
	{ "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
	{ "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
	{ "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
	{ "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
};

#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)

static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
	"Link test   (on/offline)"
};

#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)

static int igbvf_get_link_ksettings(struct net_device *netdev,
				    struct ethtool_link_ksettings *cmd)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u32 status;

	ethtool_link_ksettings_zero_link_mode(cmd, supported);
	ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
	ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);

	cmd->base.port = -1;

	status = er32(STATUS);
	if (status & E1000_STATUS_LU) {
		if (status & E1000_STATUS_SPEED_1000)
			cmd->base.speed = SPEED_1000;
		else if (status & E1000_STATUS_SPEED_100)
			cmd->base.speed = SPEED_100;
		else
			cmd->base.speed = SPEED_10;

		if (status & E1000_STATUS_FD)
			cmd->base.duplex = DUPLEX_FULL;
		else
			cmd->base.duplex = DUPLEX_HALF;
	} else {
		cmd->base.speed = SPEED_UNKNOWN;
		cmd->base.duplex = DUPLEX_UNKNOWN;
	}

	cmd->base.autoneg = AUTONEG_DISABLE;

	return 0;
}

static int igbvf_set_link_ksettings(struct net_device *netdev,
				    const struct ethtool_link_ksettings *cmd)
{
	return -EOPNOTSUPP;
}

static void igbvf_get_pauseparam(struct net_device *netdev,
				 struct ethtool_pauseparam *pause)
{
}

static int igbvf_set_pauseparam(struct net_device *netdev,
				struct ethtool_pauseparam *pause)
{
	return -EOPNOTSUPP;
}

static u32 igbvf_get_msglevel(struct net_device *netdev)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	return adapter->msg_enable;
}

static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	adapter->msg_enable = data;
}

static int igbvf_get_regs_len(struct net_device *netdev)
{
#define IGBVF_REGS_LEN 8
	return IGBVF_REGS_LEN * sizeof(u32);
}

static void igbvf_get_regs(struct net_device *netdev,
			   struct ethtool_regs *regs, void *p)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;
	u32 *regs_buff = p;

	memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));

	regs->version = (1u << 24) |
			(adapter->pdev->revision << 16) |
			adapter->pdev->device;

	regs_buff[0] = er32(CTRL);
	regs_buff[1] = er32(STATUS);

	regs_buff[2] = er32(RDLEN(0));
	regs_buff[3] = er32(RDH(0));
	regs_buff[4] = er32(RDT(0));

	regs_buff[5] = er32(TDLEN(0));
	regs_buff[6] = er32(TDH(0));
	regs_buff[7] = er32(TDT(0));
}

static int igbvf_get_eeprom_len(struct net_device *netdev)
{
	return 0;
}

static int igbvf_get_eeprom(struct net_device *netdev,
			    struct ethtool_eeprom *eeprom, u8 *bytes)
{
	return -EOPNOTSUPP;
}

static int igbvf_set_eeprom(struct net_device *netdev,
			    struct ethtool_eeprom *eeprom, u8 *bytes)
{
	return -EOPNOTSUPP;
}

static void igbvf_get_drvinfo(struct net_device *netdev,
			      struct ethtool_drvinfo *drvinfo)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	strlcpy(drvinfo->driver,  igbvf_driver_name, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, igbvf_driver_version,
		sizeof(drvinfo->version));
	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
		sizeof(drvinfo->bus_info));
}

static void igbvf_get_ringparam(struct net_device *netdev,
				struct ethtool_ringparam *ring)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	struct igbvf_ring *tx_ring = adapter->tx_ring;
	struct igbvf_ring *rx_ring = adapter->rx_ring;

	ring->rx_max_pending = IGBVF_MAX_RXD;
	ring->tx_max_pending = IGBVF_MAX_TXD;
	ring->rx_pending = rx_ring->count;
	ring->tx_pending = tx_ring->count;
}

static int igbvf_set_ringparam(struct net_device *netdev,
			       struct ethtool_ringparam *ring)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	struct igbvf_ring *temp_ring;
	int err = 0;
	u32 new_rx_count, new_tx_count;

	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
		return -EINVAL;

	new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD);
	new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD);
	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);

	new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD);
	new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD);
	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);

	if ((new_tx_count == adapter->tx_ring->count) &&
	    (new_rx_count == adapter->rx_ring->count)) {
		/* nothing to do */
		return 0;
	}

	while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
		usleep_range(1000, 2000);

	if (!netif_running(adapter->netdev)) {
		adapter->tx_ring->count = new_tx_count;
		adapter->rx_ring->count = new_rx_count;
		goto clear_reset;
	}

	temp_ring = vmalloc(sizeof(struct igbvf_ring));
	if (!temp_ring) {
		err = -ENOMEM;
		goto clear_reset;
	}

	igbvf_down(adapter);

	/* We can't just free everything and then setup again,
	 * because the ISRs in MSI-X mode get passed pointers
	 * to the Tx and Rx ring structs.
	 */
	if (new_tx_count != adapter->tx_ring->count) {
		memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));

		temp_ring->count = new_tx_count;
		err = igbvf_setup_tx_resources(adapter, temp_ring);
		if (err)
			goto err_setup;

		igbvf_free_tx_resources(adapter->tx_ring);

		memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
	}

	if (new_rx_count != adapter->rx_ring->count) {
		memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));

		temp_ring->count = new_rx_count;
		err = igbvf_setup_rx_resources(adapter, temp_ring);
		if (err)
			goto err_setup;

		igbvf_free_rx_resources(adapter->rx_ring);

		memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring));
	}
err_setup:
	igbvf_up(adapter);
	vfree(temp_ring);
clear_reset:
	clear_bit(__IGBVF_RESETTING, &adapter->state);
	return err;
}

static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
{
	struct e1000_hw *hw = &adapter->hw;
	*data = 0;

	spin_lock_bh(&hw->mbx_lock);

	hw->mac.ops.check_for_link(hw);

	spin_unlock_bh(&hw->mbx_lock);

	if (!(er32(STATUS) & E1000_STATUS_LU))
		*data = 1;

	return *data;
}

static void igbvf_diag_test(struct net_device *netdev,
			    struct ethtool_test *eth_test, u64 *data)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	set_bit(__IGBVF_TESTING, &adapter->state);

	/* Link test performed before hardware reset so autoneg doesn't
	 * interfere with test result
	 */
	if (igbvf_link_test(adapter, &data[0]))
		eth_test->flags |= ETH_TEST_FL_FAILED;

	clear_bit(__IGBVF_TESTING, &adapter->state);
	msleep_interruptible(4 * 1000);
}

static void igbvf_get_wol(struct net_device *netdev,
			  struct ethtool_wolinfo *wol)
{
	wol->supported = 0;
	wol->wolopts = 0;
}

static int igbvf_set_wol(struct net_device *netdev,
			 struct ethtool_wolinfo *wol)
{
	return -EOPNOTSUPP;
}

static int igbvf_get_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	if (adapter->requested_itr <= 3)
		ec->rx_coalesce_usecs = adapter->requested_itr;
	else
		ec->rx_coalesce_usecs = adapter->current_itr >> 2;

	return 0;
}

static int igbvf_set_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	struct e1000_hw *hw = &adapter->hw;

	if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) &&
	    (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) {
		adapter->current_itr = ec->rx_coalesce_usecs << 2;
		adapter->requested_itr = 1000000000 /
					(adapter->current_itr * 256);
	} else if ((ec->rx_coalesce_usecs == 3) ||
		   (ec->rx_coalesce_usecs == 2)) {
		adapter->current_itr = IGBVF_START_ITR;
		adapter->requested_itr = ec->rx_coalesce_usecs;
	} else if (ec->rx_coalesce_usecs == 0) {
		/* The user's desire is to turn off interrupt throttling
		 * altogether, but due to HW limitations, we can't do that.
		 * Instead we set a very small value in EITR, which would
		 * allow ~967k interrupts per second, but allow the adapter's
		 * internal clocking to still function properly.
		 */
		adapter->current_itr = 4;
		adapter->requested_itr = 1000000000 /
					(adapter->current_itr * 256);
	} else {
		return -EINVAL;
	}

	writel(adapter->current_itr,
	       hw->hw_addr + adapter->rx_ring->itr_register);

	return 0;
}

static int igbvf_nway_reset(struct net_device *netdev)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);

	if (netif_running(netdev))
		igbvf_reinit_locked(adapter);
	return 0;
}

static void igbvf_get_ethtool_stats(struct net_device *netdev,
				    struct ethtool_stats *stats,
				    u64 *data)
{
	struct igbvf_adapter *adapter = netdev_priv(netdev);
	int i;

	igbvf_update_stats(adapter);
	for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
		char *p = (char *)adapter +
			  igbvf_gstrings_stats[i].stat_offset;
		char *b = (char *)adapter +
			  igbvf_gstrings_stats[i].base_stat_offset;
		data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
			    sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
			    (*(u32 *)p - *(u32 *)b));
	}
}

static int igbvf_get_sset_count(struct net_device *dev, int stringset)
{
	switch (stringset) {
	case ETH_SS_TEST:
		return IGBVF_TEST_LEN;
	case ETH_SS_STATS:
		return IGBVF_GLOBAL_STATS_LEN;
	default:
		return -EINVAL;
	}
}

static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
			      u8 *data)
{
	u8 *p = data;
	int i;

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
		break;
	case ETH_SS_STATS:
		for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
			memcpy(p, igbvf_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		break;
	}
}

static const struct ethtool_ops igbvf_ethtool_ops = {
	.get_drvinfo		= igbvf_get_drvinfo,
	.get_regs_len		= igbvf_get_regs_len,
	.get_regs		= igbvf_get_regs,
	.get_wol		= igbvf_get_wol,
	.set_wol		= igbvf_set_wol,
	.get_msglevel		= igbvf_get_msglevel,
	.set_msglevel		= igbvf_set_msglevel,
	.nway_reset		= igbvf_nway_reset,
	.get_link		= ethtool_op_get_link,
	.get_eeprom_len		= igbvf_get_eeprom_len,
	.get_eeprom		= igbvf_get_eeprom,
	.set_eeprom		= igbvf_set_eeprom,
	.get_ringparam		= igbvf_get_ringparam,
	.set_ringparam		= igbvf_set_ringparam,
	.get_pauseparam		= igbvf_get_pauseparam,
	.set_pauseparam		= igbvf_set_pauseparam,
	.self_test		= igbvf_diag_test,
	.get_sset_count		= igbvf_get_sset_count,
	.get_strings		= igbvf_get_strings,
	.get_ethtool_stats	= igbvf_get_ethtool_stats,
	.get_coalesce		= igbvf_get_coalesce,
	.set_coalesce		= igbvf_set_coalesce,
	.get_link_ksettings	= igbvf_get_link_ksettings,
	.set_link_ksettings	= igbvf_set_link_ksettings,
};

void igbvf_set_ethtool_ops(struct net_device *netdev)
{
	netdev->ethtool_ops = &igbvf_ethtool_ops;
}