1 /*
2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  *
32  */
33 
34 #include <linux/kernel.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/mlx4/driver.h>
38 #include <linux/in.h>
39 #include <net/ip.h>
40 
41 #include "mlx4_en.h"
42 #include "en_port.h"
43 
44 #define EN_ETHTOOL_QP_ATTACH (1ull << 63)
45 #define EN_ETHTOOL_SHORT_MASK cpu_to_be16(0xffff)
46 #define EN_ETHTOOL_WORD_MASK  cpu_to_be32(0xffffffff)
47 
48 static int mlx4_en_moderation_update(struct mlx4_en_priv *priv)
49 {
50 	int i;
51 	int err = 0;
52 
53 	for (i = 0; i < priv->tx_ring_num; i++) {
54 		priv->tx_cq[i]->moder_cnt = priv->tx_frames;
55 		priv->tx_cq[i]->moder_time = priv->tx_usecs;
56 		if (priv->port_up) {
57 			err = mlx4_en_set_cq_moder(priv, priv->tx_cq[i]);
58 			if (err)
59 				return err;
60 		}
61 	}
62 
63 	if (priv->adaptive_rx_coal)
64 		return 0;
65 
66 	for (i = 0; i < priv->rx_ring_num; i++) {
67 		priv->rx_cq[i]->moder_cnt = priv->rx_frames;
68 		priv->rx_cq[i]->moder_time = priv->rx_usecs;
69 		priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
70 		if (priv->port_up) {
71 			err = mlx4_en_set_cq_moder(priv, priv->rx_cq[i]);
72 			if (err)
73 				return err;
74 		}
75 	}
76 
77 	return err;
78 }
79 
80 static void
81 mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
82 {
83 	struct mlx4_en_priv *priv = netdev_priv(dev);
84 	struct mlx4_en_dev *mdev = priv->mdev;
85 
86 	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
87 	strlcpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")",
88 		sizeof(drvinfo->version));
89 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
90 		"%d.%d.%d",
91 		(u16) (mdev->dev->caps.fw_ver >> 32),
92 		(u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
93 		(u16) (mdev->dev->caps.fw_ver & 0xffff));
94 	strlcpy(drvinfo->bus_info, pci_name(mdev->dev->pdev),
95 		sizeof(drvinfo->bus_info));
96 	drvinfo->n_stats = 0;
97 	drvinfo->regdump_len = 0;
98 	drvinfo->eedump_len = 0;
99 }
100 
101 static const char main_strings[][ETH_GSTRING_LEN] = {
102 	"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
103 	"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
104 	"rx_length_errors", "rx_over_errors", "rx_crc_errors",
105 	"rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
106 	"tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
107 	"tx_heartbeat_errors", "tx_window_errors",
108 
109 	/* port statistics */
110 	"tso_packets",
111 	"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
112 	"rx_csum_good", "rx_csum_none", "tx_chksum_offload",
113 
114 	/* packet statistics */
115 	"broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
116 	"rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
117 	"tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
118 	"tx_prio_6", "tx_prio_7",
119 };
120 #define NUM_MAIN_STATS	21
121 #define NUM_ALL_STATS	(NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
122 
123 static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
124 	"Interrupt Test",
125 	"Link Test",
126 	"Speed Test",
127 	"Register Test",
128 	"Loopback Test",
129 };
130 
131 static u32 mlx4_en_get_msglevel(struct net_device *dev)
132 {
133 	return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
134 }
135 
136 static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
137 {
138 	((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
139 }
140 
141 static void mlx4_en_get_wol(struct net_device *netdev,
142 			    struct ethtool_wolinfo *wol)
143 {
144 	struct mlx4_en_priv *priv = netdev_priv(netdev);
145 	int err = 0;
146 	u64 config = 0;
147 	u64 mask;
148 
149 	if ((priv->port < 1) || (priv->port > 2)) {
150 		en_err(priv, "Failed to get WoL information\n");
151 		return;
152 	}
153 
154 	mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
155 		MLX4_DEV_CAP_FLAG_WOL_PORT2;
156 
157 	if (!(priv->mdev->dev->caps.flags & mask)) {
158 		wol->supported = 0;
159 		wol->wolopts = 0;
160 		return;
161 	}
162 
163 	err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
164 	if (err) {
165 		en_err(priv, "Failed to get WoL information\n");
166 		return;
167 	}
168 
169 	if (config & MLX4_EN_WOL_MAGIC)
170 		wol->supported = WAKE_MAGIC;
171 	else
172 		wol->supported = 0;
173 
174 	if (config & MLX4_EN_WOL_ENABLED)
175 		wol->wolopts = WAKE_MAGIC;
176 	else
177 		wol->wolopts = 0;
178 }
179 
180 static int mlx4_en_set_wol(struct net_device *netdev,
181 			    struct ethtool_wolinfo *wol)
182 {
183 	struct mlx4_en_priv *priv = netdev_priv(netdev);
184 	u64 config = 0;
185 	int err = 0;
186 	u64 mask;
187 
188 	if ((priv->port < 1) || (priv->port > 2))
189 		return -EOPNOTSUPP;
190 
191 	mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
192 		MLX4_DEV_CAP_FLAG_WOL_PORT2;
193 
194 	if (!(priv->mdev->dev->caps.flags & mask))
195 		return -EOPNOTSUPP;
196 
197 	if (wol->supported & ~WAKE_MAGIC)
198 		return -EINVAL;
199 
200 	err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
201 	if (err) {
202 		en_err(priv, "Failed to get WoL info, unable to modify\n");
203 		return err;
204 	}
205 
206 	if (wol->wolopts & WAKE_MAGIC) {
207 		config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
208 				MLX4_EN_WOL_MAGIC;
209 	} else {
210 		config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
211 		config |= MLX4_EN_WOL_DO_MODIFY;
212 	}
213 
214 	err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
215 	if (err)
216 		en_err(priv, "Failed to set WoL information\n");
217 
218 	return err;
219 }
220 
221 static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
222 {
223 	struct mlx4_en_priv *priv = netdev_priv(dev);
224 	int bit_count = hweight64(priv->stats_bitmap);
225 
226 	switch (sset) {
227 	case ETH_SS_STATS:
228 		return (priv->stats_bitmap ? bit_count : NUM_ALL_STATS) +
229 			(priv->tx_ring_num * 2) +
230 #ifdef CONFIG_NET_RX_BUSY_POLL
231 			(priv->rx_ring_num * 5);
232 #else
233 			(priv->rx_ring_num * 2);
234 #endif
235 	case ETH_SS_TEST:
236 		return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
237 					& MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
238 	default:
239 		return -EOPNOTSUPP;
240 	}
241 }
242 
243 static void mlx4_en_get_ethtool_stats(struct net_device *dev,
244 		struct ethtool_stats *stats, uint64_t *data)
245 {
246 	struct mlx4_en_priv *priv = netdev_priv(dev);
247 	int index = 0;
248 	int i, j = 0;
249 
250 	spin_lock_bh(&priv->stats_lock);
251 
252 	if (!(priv->stats_bitmap)) {
253 		for (i = 0; i < NUM_MAIN_STATS; i++)
254 			data[index++] =
255 				((unsigned long *) &priv->stats)[i];
256 		for (i = 0; i < NUM_PORT_STATS; i++)
257 			data[index++] =
258 				((unsigned long *) &priv->port_stats)[i];
259 		for (i = 0; i < NUM_PKT_STATS; i++)
260 			data[index++] =
261 				((unsigned long *) &priv->pkstats)[i];
262 	} else {
263 		for (i = 0; i < NUM_MAIN_STATS; i++) {
264 			if ((priv->stats_bitmap >> j) & 1)
265 				data[index++] =
266 				((unsigned long *) &priv->stats)[i];
267 			j++;
268 		}
269 		for (i = 0; i < NUM_PORT_STATS; i++) {
270 			if ((priv->stats_bitmap >> j) & 1)
271 				data[index++] =
272 				((unsigned long *) &priv->port_stats)[i];
273 			j++;
274 		}
275 	}
276 	for (i = 0; i < priv->tx_ring_num; i++) {
277 		data[index++] = priv->tx_ring[i]->packets;
278 		data[index++] = priv->tx_ring[i]->bytes;
279 	}
280 	for (i = 0; i < priv->rx_ring_num; i++) {
281 		data[index++] = priv->rx_ring[i]->packets;
282 		data[index++] = priv->rx_ring[i]->bytes;
283 #ifdef CONFIG_NET_RX_BUSY_POLL
284 		data[index++] = priv->rx_ring[i]->yields;
285 		data[index++] = priv->rx_ring[i]->misses;
286 		data[index++] = priv->rx_ring[i]->cleaned;
287 #endif
288 	}
289 	spin_unlock_bh(&priv->stats_lock);
290 
291 }
292 
293 static void mlx4_en_self_test(struct net_device *dev,
294 			      struct ethtool_test *etest, u64 *buf)
295 {
296 	mlx4_en_ex_selftest(dev, &etest->flags, buf);
297 }
298 
299 static void mlx4_en_get_strings(struct net_device *dev,
300 				uint32_t stringset, uint8_t *data)
301 {
302 	struct mlx4_en_priv *priv = netdev_priv(dev);
303 	int index = 0;
304 	int i;
305 
306 	switch (stringset) {
307 	case ETH_SS_TEST:
308 		for (i = 0; i < MLX4_EN_NUM_SELF_TEST - 2; i++)
309 			strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
310 		if (priv->mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UC_LOOPBACK)
311 			for (; i < MLX4_EN_NUM_SELF_TEST; i++)
312 				strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
313 		break;
314 
315 	case ETH_SS_STATS:
316 		/* Add main counters */
317 		if (!priv->stats_bitmap) {
318 			for (i = 0; i < NUM_MAIN_STATS; i++)
319 				strcpy(data + (index++) * ETH_GSTRING_LEN,
320 					main_strings[i]);
321 			for (i = 0; i < NUM_PORT_STATS; i++)
322 				strcpy(data + (index++) * ETH_GSTRING_LEN,
323 					main_strings[i +
324 					NUM_MAIN_STATS]);
325 			for (i = 0; i < NUM_PKT_STATS; i++)
326 				strcpy(data + (index++) * ETH_GSTRING_LEN,
327 					main_strings[i +
328 					NUM_MAIN_STATS +
329 					NUM_PORT_STATS]);
330 		} else
331 			for (i = 0; i < NUM_MAIN_STATS + NUM_PORT_STATS; i++) {
332 				if ((priv->stats_bitmap >> i) & 1) {
333 					strcpy(data +
334 					       (index++) * ETH_GSTRING_LEN,
335 					       main_strings[i]);
336 				}
337 				if (!(priv->stats_bitmap >> i))
338 					break;
339 			}
340 		for (i = 0; i < priv->tx_ring_num; i++) {
341 			sprintf(data + (index++) * ETH_GSTRING_LEN,
342 				"tx%d_packets", i);
343 			sprintf(data + (index++) * ETH_GSTRING_LEN,
344 				"tx%d_bytes", i);
345 		}
346 		for (i = 0; i < priv->rx_ring_num; i++) {
347 			sprintf(data + (index++) * ETH_GSTRING_LEN,
348 				"rx%d_packets", i);
349 			sprintf(data + (index++) * ETH_GSTRING_LEN,
350 				"rx%d_bytes", i);
351 #ifdef CONFIG_NET_RX_BUSY_POLL
352 			sprintf(data + (index++) * ETH_GSTRING_LEN,
353 				"rx%d_napi_yield", i);
354 			sprintf(data + (index++) * ETH_GSTRING_LEN,
355 				"rx%d_misses", i);
356 			sprintf(data + (index++) * ETH_GSTRING_LEN,
357 				"rx%d_cleaned", i);
358 #endif
359 		}
360 		break;
361 	}
362 }
363 
364 static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
365 {
366 	struct mlx4_en_priv *priv = netdev_priv(dev);
367 	int trans_type;
368 
369 	cmd->autoneg = AUTONEG_DISABLE;
370 	cmd->supported = SUPPORTED_10000baseT_Full;
371 	cmd->advertising = ADVERTISED_10000baseT_Full;
372 
373 	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
374 		return -ENOMEM;
375 
376 	trans_type = priv->port_state.transciver;
377 	if (netif_carrier_ok(dev)) {
378 		ethtool_cmd_speed_set(cmd, priv->port_state.link_speed);
379 		cmd->duplex = DUPLEX_FULL;
380 	} else {
381 		ethtool_cmd_speed_set(cmd, SPEED_UNKNOWN);
382 		cmd->duplex = DUPLEX_UNKNOWN;
383 	}
384 
385 	if (trans_type > 0 && trans_type <= 0xC) {
386 		cmd->port = PORT_FIBRE;
387 		cmd->transceiver = XCVR_EXTERNAL;
388 		cmd->supported |= SUPPORTED_FIBRE;
389 		cmd->advertising |= ADVERTISED_FIBRE;
390 	} else if (trans_type == 0x80 || trans_type == 0) {
391 		cmd->port = PORT_TP;
392 		cmd->transceiver = XCVR_INTERNAL;
393 		cmd->supported |= SUPPORTED_TP;
394 		cmd->advertising |= ADVERTISED_TP;
395 	} else  {
396 		cmd->port = -1;
397 		cmd->transceiver = -1;
398 	}
399 	return 0;
400 }
401 
402 static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
403 {
404 	if ((cmd->autoneg == AUTONEG_ENABLE) ||
405 	    (ethtool_cmd_speed(cmd) != SPEED_10000) ||
406 	    (cmd->duplex != DUPLEX_FULL))
407 		return -EINVAL;
408 
409 	/* Nothing to change */
410 	return 0;
411 }
412 
413 static int mlx4_en_get_coalesce(struct net_device *dev,
414 			      struct ethtool_coalesce *coal)
415 {
416 	struct mlx4_en_priv *priv = netdev_priv(dev);
417 
418 	coal->tx_coalesce_usecs = priv->tx_usecs;
419 	coal->tx_max_coalesced_frames = priv->tx_frames;
420 	coal->rx_coalesce_usecs = priv->rx_usecs;
421 	coal->rx_max_coalesced_frames = priv->rx_frames;
422 
423 	coal->pkt_rate_low = priv->pkt_rate_low;
424 	coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
425 	coal->pkt_rate_high = priv->pkt_rate_high;
426 	coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
427 	coal->rate_sample_interval = priv->sample_interval;
428 	coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
429 	return 0;
430 }
431 
432 static int mlx4_en_set_coalesce(struct net_device *dev,
433 			      struct ethtool_coalesce *coal)
434 {
435 	struct mlx4_en_priv *priv = netdev_priv(dev);
436 
437 	priv->rx_frames = (coal->rx_max_coalesced_frames ==
438 			   MLX4_EN_AUTO_CONF) ?
439 				MLX4_EN_RX_COAL_TARGET :
440 				coal->rx_max_coalesced_frames;
441 	priv->rx_usecs = (coal->rx_coalesce_usecs ==
442 			  MLX4_EN_AUTO_CONF) ?
443 				MLX4_EN_RX_COAL_TIME :
444 				coal->rx_coalesce_usecs;
445 
446 	/* Setting TX coalescing parameters */
447 	if (coal->tx_coalesce_usecs != priv->tx_usecs ||
448 	    coal->tx_max_coalesced_frames != priv->tx_frames) {
449 		priv->tx_usecs = coal->tx_coalesce_usecs;
450 		priv->tx_frames = coal->tx_max_coalesced_frames;
451 	}
452 
453 	/* Set adaptive coalescing params */
454 	priv->pkt_rate_low = coal->pkt_rate_low;
455 	priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
456 	priv->pkt_rate_high = coal->pkt_rate_high;
457 	priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
458 	priv->sample_interval = coal->rate_sample_interval;
459 	priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
460 
461 	return mlx4_en_moderation_update(priv);
462 }
463 
464 static int mlx4_en_set_pauseparam(struct net_device *dev,
465 				struct ethtool_pauseparam *pause)
466 {
467 	struct mlx4_en_priv *priv = netdev_priv(dev);
468 	struct mlx4_en_dev *mdev = priv->mdev;
469 	int err;
470 
471 	priv->prof->tx_pause = pause->tx_pause != 0;
472 	priv->prof->rx_pause = pause->rx_pause != 0;
473 	err = mlx4_SET_PORT_general(mdev->dev, priv->port,
474 				    priv->rx_skb_size + ETH_FCS_LEN,
475 				    priv->prof->tx_pause,
476 				    priv->prof->tx_ppp,
477 				    priv->prof->rx_pause,
478 				    priv->prof->rx_ppp);
479 	if (err)
480 		en_err(priv, "Failed setting pause params\n");
481 
482 	return err;
483 }
484 
485 static void mlx4_en_get_pauseparam(struct net_device *dev,
486 				 struct ethtool_pauseparam *pause)
487 {
488 	struct mlx4_en_priv *priv = netdev_priv(dev);
489 
490 	pause->tx_pause = priv->prof->tx_pause;
491 	pause->rx_pause = priv->prof->rx_pause;
492 }
493 
494 static int mlx4_en_set_ringparam(struct net_device *dev,
495 				 struct ethtool_ringparam *param)
496 {
497 	struct mlx4_en_priv *priv = netdev_priv(dev);
498 	struct mlx4_en_dev *mdev = priv->mdev;
499 	u32 rx_size, tx_size;
500 	int port_up = 0;
501 	int err = 0;
502 
503 	if (param->rx_jumbo_pending || param->rx_mini_pending)
504 		return -EINVAL;
505 
506 	rx_size = roundup_pow_of_two(param->rx_pending);
507 	rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
508 	rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
509 	tx_size = roundup_pow_of_two(param->tx_pending);
510 	tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
511 	tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
512 
513 	if (rx_size == (priv->port_up ? priv->rx_ring[0]->actual_size :
514 					priv->rx_ring[0]->size) &&
515 	    tx_size == priv->tx_ring[0]->size)
516 		return 0;
517 
518 	mutex_lock(&mdev->state_lock);
519 	if (priv->port_up) {
520 		port_up = 1;
521 		mlx4_en_stop_port(dev, 1);
522 	}
523 
524 	mlx4_en_free_resources(priv);
525 
526 	priv->prof->tx_ring_size = tx_size;
527 	priv->prof->rx_ring_size = rx_size;
528 
529 	err = mlx4_en_alloc_resources(priv);
530 	if (err) {
531 		en_err(priv, "Failed reallocating port resources\n");
532 		goto out;
533 	}
534 	if (port_up) {
535 		err = mlx4_en_start_port(dev);
536 		if (err)
537 			en_err(priv, "Failed starting port\n");
538 	}
539 
540 	err = mlx4_en_moderation_update(priv);
541 
542 out:
543 	mutex_unlock(&mdev->state_lock);
544 	return err;
545 }
546 
547 static void mlx4_en_get_ringparam(struct net_device *dev,
548 				  struct ethtool_ringparam *param)
549 {
550 	struct mlx4_en_priv *priv = netdev_priv(dev);
551 
552 	memset(param, 0, sizeof(*param));
553 	param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
554 	param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
555 	param->rx_pending = priv->port_up ?
556 		priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size;
557 	param->tx_pending = priv->tx_ring[0]->size;
558 }
559 
560 static u32 mlx4_en_get_rxfh_indir_size(struct net_device *dev)
561 {
562 	struct mlx4_en_priv *priv = netdev_priv(dev);
563 
564 	return priv->rx_ring_num;
565 }
566 
567 static int mlx4_en_get_rxfh(struct net_device *dev, u32 *ring_index, u8 *key)
568 {
569 	struct mlx4_en_priv *priv = netdev_priv(dev);
570 	struct mlx4_en_rss_map *rss_map = &priv->rss_map;
571 	int rss_rings;
572 	size_t n = priv->rx_ring_num;
573 	int err = 0;
574 
575 	rss_rings = priv->prof->rss_rings ?: priv->rx_ring_num;
576 
577 	while (n--) {
578 		ring_index[n] = rss_map->qps[n % rss_rings].qpn -
579 			rss_map->base_qpn;
580 	}
581 
582 	return err;
583 }
584 
585 static int mlx4_en_set_rxfh(struct net_device *dev, const u32 *ring_index,
586 			    const u8 *key)
587 {
588 	struct mlx4_en_priv *priv = netdev_priv(dev);
589 	struct mlx4_en_dev *mdev = priv->mdev;
590 	int port_up = 0;
591 	int err = 0;
592 	int i;
593 	int rss_rings = 0;
594 
595 	/* Calculate RSS table size and make sure flows are spread evenly
596 	 * between rings
597 	 */
598 	for (i = 0; i < priv->rx_ring_num; i++) {
599 		if (i > 0 && !ring_index[i] && !rss_rings)
600 			rss_rings = i;
601 
602 		if (ring_index[i] != (i % (rss_rings ?: priv->rx_ring_num)))
603 			return -EINVAL;
604 	}
605 
606 	if (!rss_rings)
607 		rss_rings = priv->rx_ring_num;
608 
609 	/* RSS table size must be an order of 2 */
610 	if (!is_power_of_2(rss_rings))
611 		return -EINVAL;
612 
613 	mutex_lock(&mdev->state_lock);
614 	if (priv->port_up) {
615 		port_up = 1;
616 		mlx4_en_stop_port(dev, 1);
617 	}
618 
619 	priv->prof->rss_rings = rss_rings;
620 
621 	if (port_up) {
622 		err = mlx4_en_start_port(dev);
623 		if (err)
624 			en_err(priv, "Failed starting port\n");
625 	}
626 
627 	mutex_unlock(&mdev->state_lock);
628 	return err;
629 }
630 
631 #define all_zeros_or_all_ones(field)		\
632 	((field) == 0 || (field) == (__force typeof(field))-1)
633 
634 static int mlx4_en_validate_flow(struct net_device *dev,
635 				 struct ethtool_rxnfc *cmd)
636 {
637 	struct ethtool_usrip4_spec *l3_mask;
638 	struct ethtool_tcpip4_spec *l4_mask;
639 	struct ethhdr *eth_mask;
640 
641 	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
642 		return -EINVAL;
643 
644 	if (cmd->fs.flow_type & FLOW_MAC_EXT) {
645 		/* dest mac mask must be ff:ff:ff:ff:ff:ff */
646 		if (!is_broadcast_ether_addr(cmd->fs.m_ext.h_dest))
647 			return -EINVAL;
648 	}
649 
650 	switch (cmd->fs.flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
651 	case TCP_V4_FLOW:
652 	case UDP_V4_FLOW:
653 		if (cmd->fs.m_u.tcp_ip4_spec.tos)
654 			return -EINVAL;
655 		l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
656 		/* don't allow mask which isn't all 0 or 1 */
657 		if (!all_zeros_or_all_ones(l4_mask->ip4src) ||
658 		    !all_zeros_or_all_ones(l4_mask->ip4dst) ||
659 		    !all_zeros_or_all_ones(l4_mask->psrc) ||
660 		    !all_zeros_or_all_ones(l4_mask->pdst))
661 			return -EINVAL;
662 		break;
663 	case IP_USER_FLOW:
664 		l3_mask = &cmd->fs.m_u.usr_ip4_spec;
665 		if (l3_mask->l4_4_bytes || l3_mask->tos || l3_mask->proto ||
666 		    cmd->fs.h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4 ||
667 		    (!l3_mask->ip4src && !l3_mask->ip4dst) ||
668 		    !all_zeros_or_all_ones(l3_mask->ip4src) ||
669 		    !all_zeros_or_all_ones(l3_mask->ip4dst))
670 			return -EINVAL;
671 		break;
672 	case ETHER_FLOW:
673 		eth_mask = &cmd->fs.m_u.ether_spec;
674 		/* source mac mask must not be set */
675 		if (!is_zero_ether_addr(eth_mask->h_source))
676 			return -EINVAL;
677 
678 		/* dest mac mask must be ff:ff:ff:ff:ff:ff */
679 		if (!is_broadcast_ether_addr(eth_mask->h_dest))
680 			return -EINVAL;
681 
682 		if (!all_zeros_or_all_ones(eth_mask->h_proto))
683 			return -EINVAL;
684 		break;
685 	default:
686 		return -EINVAL;
687 	}
688 
689 	if ((cmd->fs.flow_type & FLOW_EXT)) {
690 		if (cmd->fs.m_ext.vlan_etype ||
691 		    !((cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK)) ==
692 		      0 ||
693 		      (cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK)) ==
694 		      cpu_to_be16(VLAN_VID_MASK)))
695 			return -EINVAL;
696 
697 		if (cmd->fs.m_ext.vlan_tci) {
698 			if (be16_to_cpu(cmd->fs.h_ext.vlan_tci) >= VLAN_N_VID)
699 				return -EINVAL;
700 
701 		}
702 	}
703 
704 	return 0;
705 }
706 
707 static int mlx4_en_ethtool_add_mac_rule(struct ethtool_rxnfc *cmd,
708 					struct list_head *rule_list_h,
709 					struct mlx4_spec_list *spec_l2,
710 					unsigned char *mac)
711 {
712 	int err = 0;
713 	__be64 mac_msk = cpu_to_be64(MLX4_MAC_MASK << 16);
714 
715 	spec_l2->id = MLX4_NET_TRANS_RULE_ID_ETH;
716 	memcpy(spec_l2->eth.dst_mac_msk, &mac_msk, ETH_ALEN);
717 	memcpy(spec_l2->eth.dst_mac, mac, ETH_ALEN);
718 
719 	if ((cmd->fs.flow_type & FLOW_EXT) &&
720 	    (cmd->fs.m_ext.vlan_tci & cpu_to_be16(VLAN_VID_MASK))) {
721 		spec_l2->eth.vlan_id = cmd->fs.h_ext.vlan_tci;
722 		spec_l2->eth.vlan_id_msk = cpu_to_be16(VLAN_VID_MASK);
723 	}
724 
725 	list_add_tail(&spec_l2->list, rule_list_h);
726 
727 	return err;
728 }
729 
730 static int mlx4_en_ethtool_add_mac_rule_by_ipv4(struct mlx4_en_priv *priv,
731 						struct ethtool_rxnfc *cmd,
732 						struct list_head *rule_list_h,
733 						struct mlx4_spec_list *spec_l2,
734 						__be32 ipv4_dst)
735 {
736 #ifdef CONFIG_INET
737 	unsigned char mac[ETH_ALEN];
738 
739 	if (!ipv4_is_multicast(ipv4_dst)) {
740 		if (cmd->fs.flow_type & FLOW_MAC_EXT)
741 			memcpy(&mac, cmd->fs.h_ext.h_dest, ETH_ALEN);
742 		else
743 			memcpy(&mac, priv->dev->dev_addr, ETH_ALEN);
744 	} else {
745 		ip_eth_mc_map(ipv4_dst, mac);
746 	}
747 
748 	return mlx4_en_ethtool_add_mac_rule(cmd, rule_list_h, spec_l2, &mac[0]);
749 #else
750 	return -EINVAL;
751 #endif
752 }
753 
754 static int add_ip_rule(struct mlx4_en_priv *priv,
755 		       struct ethtool_rxnfc *cmd,
756 		       struct list_head *list_h)
757 {
758 	int err;
759 	struct mlx4_spec_list *spec_l2 = NULL;
760 	struct mlx4_spec_list *spec_l3 = NULL;
761 	struct ethtool_usrip4_spec *l3_mask = &cmd->fs.m_u.usr_ip4_spec;
762 
763 	spec_l3 = kzalloc(sizeof(*spec_l3), GFP_KERNEL);
764 	spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
765 	if (!spec_l2 || !spec_l3) {
766 		err = -ENOMEM;
767 		goto free_spec;
768 	}
769 
770 	err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h, spec_l2,
771 						   cmd->fs.h_u.
772 						   usr_ip4_spec.ip4dst);
773 	if (err)
774 		goto free_spec;
775 	spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
776 	spec_l3->ipv4.src_ip = cmd->fs.h_u.usr_ip4_spec.ip4src;
777 	if (l3_mask->ip4src)
778 		spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
779 	spec_l3->ipv4.dst_ip = cmd->fs.h_u.usr_ip4_spec.ip4dst;
780 	if (l3_mask->ip4dst)
781 		spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
782 	list_add_tail(&spec_l3->list, list_h);
783 
784 	return 0;
785 
786 free_spec:
787 	kfree(spec_l2);
788 	kfree(spec_l3);
789 	return err;
790 }
791 
792 static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
793 			     struct ethtool_rxnfc *cmd,
794 			     struct list_head *list_h, int proto)
795 {
796 	int err;
797 	struct mlx4_spec_list *spec_l2 = NULL;
798 	struct mlx4_spec_list *spec_l3 = NULL;
799 	struct mlx4_spec_list *spec_l4 = NULL;
800 	struct ethtool_tcpip4_spec *l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
801 
802 	spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
803 	spec_l3 = kzalloc(sizeof(*spec_l3), GFP_KERNEL);
804 	spec_l4 = kzalloc(sizeof(*spec_l4), GFP_KERNEL);
805 	if (!spec_l2 || !spec_l3 || !spec_l4) {
806 		err = -ENOMEM;
807 		goto free_spec;
808 	}
809 
810 	spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
811 
812 	if (proto == TCP_V4_FLOW) {
813 		err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
814 							   spec_l2,
815 							   cmd->fs.h_u.
816 							   tcp_ip4_spec.ip4dst);
817 		if (err)
818 			goto free_spec;
819 		spec_l4->id = MLX4_NET_TRANS_RULE_ID_TCP;
820 		spec_l3->ipv4.src_ip = cmd->fs.h_u.tcp_ip4_spec.ip4src;
821 		spec_l3->ipv4.dst_ip = cmd->fs.h_u.tcp_ip4_spec.ip4dst;
822 		spec_l4->tcp_udp.src_port = cmd->fs.h_u.tcp_ip4_spec.psrc;
823 		spec_l4->tcp_udp.dst_port = cmd->fs.h_u.tcp_ip4_spec.pdst;
824 	} else {
825 		err = mlx4_en_ethtool_add_mac_rule_by_ipv4(priv, cmd, list_h,
826 							   spec_l2,
827 							   cmd->fs.h_u.
828 							   udp_ip4_spec.ip4dst);
829 		if (err)
830 			goto free_spec;
831 		spec_l4->id = MLX4_NET_TRANS_RULE_ID_UDP;
832 		spec_l3->ipv4.src_ip = cmd->fs.h_u.udp_ip4_spec.ip4src;
833 		spec_l3->ipv4.dst_ip = cmd->fs.h_u.udp_ip4_spec.ip4dst;
834 		spec_l4->tcp_udp.src_port = cmd->fs.h_u.udp_ip4_spec.psrc;
835 		spec_l4->tcp_udp.dst_port = cmd->fs.h_u.udp_ip4_spec.pdst;
836 	}
837 
838 	if (l4_mask->ip4src)
839 		spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
840 	if (l4_mask->ip4dst)
841 		spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
842 
843 	if (l4_mask->psrc)
844 		spec_l4->tcp_udp.src_port_msk = EN_ETHTOOL_SHORT_MASK;
845 	if (l4_mask->pdst)
846 		spec_l4->tcp_udp.dst_port_msk = EN_ETHTOOL_SHORT_MASK;
847 
848 	list_add_tail(&spec_l3->list, list_h);
849 	list_add_tail(&spec_l4->list, list_h);
850 
851 	return 0;
852 
853 free_spec:
854 	kfree(spec_l2);
855 	kfree(spec_l3);
856 	kfree(spec_l4);
857 	return err;
858 }
859 
860 static int mlx4_en_ethtool_to_net_trans_rule(struct net_device *dev,
861 					     struct ethtool_rxnfc *cmd,
862 					     struct list_head *rule_list_h)
863 {
864 	int err;
865 	struct ethhdr *eth_spec;
866 	struct mlx4_spec_list *spec_l2;
867 	struct mlx4_en_priv *priv = netdev_priv(dev);
868 
869 	err = mlx4_en_validate_flow(dev, cmd);
870 	if (err)
871 		return err;
872 
873 	switch (cmd->fs.flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
874 	case ETHER_FLOW:
875 		spec_l2 = kzalloc(sizeof(*spec_l2), GFP_KERNEL);
876 		if (!spec_l2)
877 			return -ENOMEM;
878 
879 		eth_spec = &cmd->fs.h_u.ether_spec;
880 		mlx4_en_ethtool_add_mac_rule(cmd, rule_list_h, spec_l2,
881 					     &eth_spec->h_dest[0]);
882 		spec_l2->eth.ether_type = eth_spec->h_proto;
883 		if (eth_spec->h_proto)
884 			spec_l2->eth.ether_type_enable = 1;
885 		break;
886 	case IP_USER_FLOW:
887 		err = add_ip_rule(priv, cmd, rule_list_h);
888 		break;
889 	case TCP_V4_FLOW:
890 		err = add_tcp_udp_rule(priv, cmd, rule_list_h, TCP_V4_FLOW);
891 		break;
892 	case UDP_V4_FLOW:
893 		err = add_tcp_udp_rule(priv, cmd, rule_list_h, UDP_V4_FLOW);
894 		break;
895 	}
896 
897 	return err;
898 }
899 
900 static int mlx4_en_flow_replace(struct net_device *dev,
901 				struct ethtool_rxnfc *cmd)
902 {
903 	int err;
904 	struct mlx4_en_priv *priv = netdev_priv(dev);
905 	struct ethtool_flow_id *loc_rule;
906 	struct mlx4_spec_list *spec, *tmp_spec;
907 	u32 qpn;
908 	u64 reg_id;
909 
910 	struct mlx4_net_trans_rule rule = {
911 		.queue_mode = MLX4_NET_TRANS_Q_FIFO,
912 		.exclusive = 0,
913 		.allow_loopback = 1,
914 		.promisc_mode = MLX4_FS_REGULAR,
915 	};
916 
917 	rule.port = priv->port;
918 	rule.priority = MLX4_DOMAIN_ETHTOOL | cmd->fs.location;
919 	INIT_LIST_HEAD(&rule.list);
920 
921 	/* Allow direct QP attaches if the EN_ETHTOOL_QP_ATTACH flag is set */
922 	if (cmd->fs.ring_cookie == RX_CLS_FLOW_DISC)
923 		qpn = priv->drop_qp.qpn;
924 	else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) {
925 		qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1);
926 	} else {
927 		if (cmd->fs.ring_cookie >= priv->rx_ring_num) {
928 			en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist\n",
929 				cmd->fs.ring_cookie);
930 			return -EINVAL;
931 		}
932 		qpn = priv->rss_map.qps[cmd->fs.ring_cookie].qpn;
933 		if (!qpn) {
934 			en_warn(priv, "rxnfc: RX ring (%llu) is inactive\n",
935 				cmd->fs.ring_cookie);
936 			return -EINVAL;
937 		}
938 	}
939 	rule.qpn = qpn;
940 	err = mlx4_en_ethtool_to_net_trans_rule(dev, cmd, &rule.list);
941 	if (err)
942 		goto out_free_list;
943 
944 	loc_rule = &priv->ethtool_rules[cmd->fs.location];
945 	if (loc_rule->id) {
946 		err = mlx4_flow_detach(priv->mdev->dev, loc_rule->id);
947 		if (err) {
948 			en_err(priv, "Fail to detach network rule at location %d. registration id = %llx\n",
949 			       cmd->fs.location, loc_rule->id);
950 			goto out_free_list;
951 		}
952 		loc_rule->id = 0;
953 		memset(&loc_rule->flow_spec, 0,
954 		       sizeof(struct ethtool_rx_flow_spec));
955 		list_del(&loc_rule->list);
956 	}
957 	err = mlx4_flow_attach(priv->mdev->dev, &rule, &reg_id);
958 	if (err) {
959 		en_err(priv, "Fail to attach network rule at location %d\n",
960 		       cmd->fs.location);
961 		goto out_free_list;
962 	}
963 	loc_rule->id = reg_id;
964 	memcpy(&loc_rule->flow_spec, &cmd->fs,
965 	       sizeof(struct ethtool_rx_flow_spec));
966 	list_add_tail(&loc_rule->list, &priv->ethtool_list);
967 
968 out_free_list:
969 	list_for_each_entry_safe(spec, tmp_spec, &rule.list, list) {
970 		list_del(&spec->list);
971 		kfree(spec);
972 	}
973 	return err;
974 }
975 
976 static int mlx4_en_flow_detach(struct net_device *dev,
977 			       struct ethtool_rxnfc *cmd)
978 {
979 	int err = 0;
980 	struct ethtool_flow_id *rule;
981 	struct mlx4_en_priv *priv = netdev_priv(dev);
982 
983 	if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
984 		return -EINVAL;
985 
986 	rule = &priv->ethtool_rules[cmd->fs.location];
987 	if (!rule->id) {
988 		err =  -ENOENT;
989 		goto out;
990 	}
991 
992 	err = mlx4_flow_detach(priv->mdev->dev, rule->id);
993 	if (err) {
994 		en_err(priv, "Fail to detach network rule at location %d. registration id = 0x%llx\n",
995 		       cmd->fs.location, rule->id);
996 		goto out;
997 	}
998 	rule->id = 0;
999 	memset(&rule->flow_spec, 0, sizeof(struct ethtool_rx_flow_spec));
1000 	list_del(&rule->list);
1001 out:
1002 	return err;
1003 
1004 }
1005 
1006 static int mlx4_en_get_flow(struct net_device *dev, struct ethtool_rxnfc *cmd,
1007 			    int loc)
1008 {
1009 	int err = 0;
1010 	struct ethtool_flow_id *rule;
1011 	struct mlx4_en_priv *priv = netdev_priv(dev);
1012 
1013 	if (loc < 0 || loc >= MAX_NUM_OF_FS_RULES)
1014 		return -EINVAL;
1015 
1016 	rule = &priv->ethtool_rules[loc];
1017 	if (rule->id)
1018 		memcpy(&cmd->fs, &rule->flow_spec,
1019 		       sizeof(struct ethtool_rx_flow_spec));
1020 	else
1021 		err = -ENOENT;
1022 
1023 	return err;
1024 }
1025 
1026 static int mlx4_en_get_num_flows(struct mlx4_en_priv *priv)
1027 {
1028 
1029 	int i, res = 0;
1030 	for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) {
1031 		if (priv->ethtool_rules[i].id)
1032 			res++;
1033 	}
1034 	return res;
1035 
1036 }
1037 
1038 static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1039 			     u32 *rule_locs)
1040 {
1041 	struct mlx4_en_priv *priv = netdev_priv(dev);
1042 	struct mlx4_en_dev *mdev = priv->mdev;
1043 	int err = 0;
1044 	int i = 0, priority = 0;
1045 
1046 	if ((cmd->cmd == ETHTOOL_GRXCLSRLCNT ||
1047 	     cmd->cmd == ETHTOOL_GRXCLSRULE ||
1048 	     cmd->cmd == ETHTOOL_GRXCLSRLALL) &&
1049 	    (mdev->dev->caps.steering_mode !=
1050 	     MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up))
1051 		return -EINVAL;
1052 
1053 	switch (cmd->cmd) {
1054 	case ETHTOOL_GRXRINGS:
1055 		cmd->data = priv->rx_ring_num;
1056 		break;
1057 	case ETHTOOL_GRXCLSRLCNT:
1058 		cmd->rule_cnt = mlx4_en_get_num_flows(priv);
1059 		break;
1060 	case ETHTOOL_GRXCLSRULE:
1061 		err = mlx4_en_get_flow(dev, cmd, cmd->fs.location);
1062 		break;
1063 	case ETHTOOL_GRXCLSRLALL:
1064 		while ((!err || err == -ENOENT) && priority < cmd->rule_cnt) {
1065 			err = mlx4_en_get_flow(dev, cmd, i);
1066 			if (!err)
1067 				rule_locs[priority++] = i;
1068 			i++;
1069 		}
1070 		err = 0;
1071 		break;
1072 	default:
1073 		err = -EOPNOTSUPP;
1074 		break;
1075 	}
1076 
1077 	return err;
1078 }
1079 
1080 static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1081 {
1082 	int err = 0;
1083 	struct mlx4_en_priv *priv = netdev_priv(dev);
1084 	struct mlx4_en_dev *mdev = priv->mdev;
1085 
1086 	if (mdev->dev->caps.steering_mode !=
1087 	    MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up)
1088 		return -EINVAL;
1089 
1090 	switch (cmd->cmd) {
1091 	case ETHTOOL_SRXCLSRLINS:
1092 		err = mlx4_en_flow_replace(dev, cmd);
1093 		break;
1094 	case ETHTOOL_SRXCLSRLDEL:
1095 		err = mlx4_en_flow_detach(dev, cmd);
1096 		break;
1097 	default:
1098 		en_warn(priv, "Unsupported ethtool command. (%d)\n", cmd->cmd);
1099 		return -EINVAL;
1100 	}
1101 
1102 	return err;
1103 }
1104 
1105 static void mlx4_en_get_channels(struct net_device *dev,
1106 				 struct ethtool_channels *channel)
1107 {
1108 	struct mlx4_en_priv *priv = netdev_priv(dev);
1109 
1110 	memset(channel, 0, sizeof(*channel));
1111 
1112 	channel->max_rx = MAX_RX_RINGS;
1113 	channel->max_tx = MLX4_EN_MAX_TX_RING_P_UP;
1114 
1115 	channel->rx_count = priv->rx_ring_num;
1116 	channel->tx_count = priv->tx_ring_num / MLX4_EN_NUM_UP;
1117 }
1118 
1119 static int mlx4_en_set_channels(struct net_device *dev,
1120 				struct ethtool_channels *channel)
1121 {
1122 	struct mlx4_en_priv *priv = netdev_priv(dev);
1123 	struct mlx4_en_dev *mdev = priv->mdev;
1124 	int port_up = 0;
1125 	int err = 0;
1126 
1127 	if (channel->other_count || channel->combined_count ||
1128 	    channel->tx_count > MLX4_EN_MAX_TX_RING_P_UP ||
1129 	    channel->rx_count > MAX_RX_RINGS ||
1130 	    !channel->tx_count || !channel->rx_count)
1131 		return -EINVAL;
1132 
1133 	mutex_lock(&mdev->state_lock);
1134 	if (priv->port_up) {
1135 		port_up = 1;
1136 		mlx4_en_stop_port(dev, 1);
1137 	}
1138 
1139 	mlx4_en_free_resources(priv);
1140 
1141 	priv->num_tx_rings_p_up = channel->tx_count;
1142 	priv->tx_ring_num = channel->tx_count * MLX4_EN_NUM_UP;
1143 	priv->rx_ring_num = channel->rx_count;
1144 
1145 	err = mlx4_en_alloc_resources(priv);
1146 	if (err) {
1147 		en_err(priv, "Failed reallocating port resources\n");
1148 		goto out;
1149 	}
1150 
1151 	netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
1152 	netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
1153 
1154 	if (dev->num_tc)
1155 		mlx4_en_setup_tc(dev, MLX4_EN_NUM_UP);
1156 
1157 	en_warn(priv, "Using %d TX rings\n", priv->tx_ring_num);
1158 	en_warn(priv, "Using %d RX rings\n", priv->rx_ring_num);
1159 
1160 	if (port_up) {
1161 		err = mlx4_en_start_port(dev);
1162 		if (err)
1163 			en_err(priv, "Failed starting port\n");
1164 	}
1165 
1166 	err = mlx4_en_moderation_update(priv);
1167 
1168 out:
1169 	mutex_unlock(&mdev->state_lock);
1170 	return err;
1171 }
1172 
1173 static int mlx4_en_get_ts_info(struct net_device *dev,
1174 			       struct ethtool_ts_info *info)
1175 {
1176 	struct mlx4_en_priv *priv = netdev_priv(dev);
1177 	struct mlx4_en_dev *mdev = priv->mdev;
1178 	int ret;
1179 
1180 	ret = ethtool_op_get_ts_info(dev, info);
1181 	if (ret)
1182 		return ret;
1183 
1184 	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
1185 		info->so_timestamping |=
1186 			SOF_TIMESTAMPING_TX_HARDWARE |
1187 			SOF_TIMESTAMPING_RX_HARDWARE |
1188 			SOF_TIMESTAMPING_RAW_HARDWARE;
1189 
1190 		info->tx_types =
1191 			(1 << HWTSTAMP_TX_OFF) |
1192 			(1 << HWTSTAMP_TX_ON);
1193 
1194 		info->rx_filters =
1195 			(1 << HWTSTAMP_FILTER_NONE) |
1196 			(1 << HWTSTAMP_FILTER_ALL);
1197 
1198 		if (mdev->ptp_clock)
1199 			info->phc_index = ptp_clock_index(mdev->ptp_clock);
1200 	}
1201 
1202 	return ret;
1203 }
1204 
1205 const struct ethtool_ops mlx4_en_ethtool_ops = {
1206 	.get_drvinfo = mlx4_en_get_drvinfo,
1207 	.get_settings = mlx4_en_get_settings,
1208 	.set_settings = mlx4_en_set_settings,
1209 	.get_link = ethtool_op_get_link,
1210 	.get_strings = mlx4_en_get_strings,
1211 	.get_sset_count = mlx4_en_get_sset_count,
1212 	.get_ethtool_stats = mlx4_en_get_ethtool_stats,
1213 	.self_test = mlx4_en_self_test,
1214 	.get_wol = mlx4_en_get_wol,
1215 	.set_wol = mlx4_en_set_wol,
1216 	.get_msglevel = mlx4_en_get_msglevel,
1217 	.set_msglevel = mlx4_en_set_msglevel,
1218 	.get_coalesce = mlx4_en_get_coalesce,
1219 	.set_coalesce = mlx4_en_set_coalesce,
1220 	.get_pauseparam = mlx4_en_get_pauseparam,
1221 	.set_pauseparam = mlx4_en_set_pauseparam,
1222 	.get_ringparam = mlx4_en_get_ringparam,
1223 	.set_ringparam = mlx4_en_set_ringparam,
1224 	.get_rxnfc = mlx4_en_get_rxnfc,
1225 	.set_rxnfc = mlx4_en_set_rxnfc,
1226 	.get_rxfh_indir_size = mlx4_en_get_rxfh_indir_size,
1227 	.get_rxfh = mlx4_en_get_rxfh,
1228 	.set_rxfh = mlx4_en_set_rxfh,
1229 	.get_channels = mlx4_en_get_channels,
1230 	.set_channels = mlx4_en_set_channels,
1231 	.get_ts_info = mlx4_en_get_ts_info,
1232 };
1233 
1234 
1235 
1236 
1237 
1238