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net/mlx4_en: Manage flow steering rules with ethtool
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / en_ethtool.c
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
38 #include "mlx4_en.h"
39 #include "en_port.h"
40
41 #define EN_ETHTOOL_QP_ATTACH (1ull << 63)
42 #define EN_ETHTOOL_MAC_MASK 0xffffffffffffULL
43 #define EN_ETHTOOL_SHORT_MASK cpu_to_be16(0xffff)
44 #define EN_ETHTOOL_WORD_MASK cpu_to_be32(0xffffffff)
45
46 static void
47 mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
48 {
49 struct mlx4_en_priv *priv = netdev_priv(dev);
50 struct mlx4_en_dev *mdev = priv->mdev;
51
52 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
53 strlcpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")",
54 sizeof(drvinfo->version));
55 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
56 "%d.%d.%d",
57 (u16) (mdev->dev->caps.fw_ver >> 32),
58 (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
59 (u16) (mdev->dev->caps.fw_ver & 0xffff));
60 strlcpy(drvinfo->bus_info, pci_name(mdev->dev->pdev),
61 sizeof(drvinfo->bus_info));
62 drvinfo->n_stats = 0;
63 drvinfo->regdump_len = 0;
64 drvinfo->eedump_len = 0;
65 }
66
67 static const char main_strings[][ETH_GSTRING_LEN] = {
68 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
69 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
70 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
71 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
72 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
73 "tx_heartbeat_errors", "tx_window_errors",
74
75 /* port statistics */
76 "tso_packets",
77 "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
78 "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
79
80 /* packet statistics */
81 "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
82 "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
83 "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
84 "tx_prio_6", "tx_prio_7",
85 };
86 #define NUM_MAIN_STATS 21
87 #define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
88
89 static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
90 "Interrupt Test",
91 "Link Test",
92 "Speed Test",
93 "Register Test",
94 "Loopback Test",
95 };
96
97 static u32 mlx4_en_get_msglevel(struct net_device *dev)
98 {
99 return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
100 }
101
102 static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
103 {
104 ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
105 }
106
107 static void mlx4_en_get_wol(struct net_device *netdev,
108 struct ethtool_wolinfo *wol)
109 {
110 struct mlx4_en_priv *priv = netdev_priv(netdev);
111 int err = 0;
112 u64 config = 0;
113 u64 mask;
114
115 if ((priv->port < 1) || (priv->port > 2)) {
116 en_err(priv, "Failed to get WoL information\n");
117 return;
118 }
119
120 mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
121 MLX4_DEV_CAP_FLAG_WOL_PORT2;
122
123 if (!(priv->mdev->dev->caps.flags & mask)) {
124 wol->supported = 0;
125 wol->wolopts = 0;
126 return;
127 }
128
129 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
130 if (err) {
131 en_err(priv, "Failed to get WoL information\n");
132 return;
133 }
134
135 if (config & MLX4_EN_WOL_MAGIC)
136 wol->supported = WAKE_MAGIC;
137 else
138 wol->supported = 0;
139
140 if (config & MLX4_EN_WOL_ENABLED)
141 wol->wolopts = WAKE_MAGIC;
142 else
143 wol->wolopts = 0;
144 }
145
146 static int mlx4_en_set_wol(struct net_device *netdev,
147 struct ethtool_wolinfo *wol)
148 {
149 struct mlx4_en_priv *priv = netdev_priv(netdev);
150 u64 config = 0;
151 int err = 0;
152 u64 mask;
153
154 if ((priv->port < 1) || (priv->port > 2))
155 return -EOPNOTSUPP;
156
157 mask = (priv->port == 1) ? MLX4_DEV_CAP_FLAG_WOL_PORT1 :
158 MLX4_DEV_CAP_FLAG_WOL_PORT2;
159
160 if (!(priv->mdev->dev->caps.flags & mask))
161 return -EOPNOTSUPP;
162
163 if (wol->supported & ~WAKE_MAGIC)
164 return -EINVAL;
165
166 err = mlx4_wol_read(priv->mdev->dev, &config, priv->port);
167 if (err) {
168 en_err(priv, "Failed to get WoL info, unable to modify\n");
169 return err;
170 }
171
172 if (wol->wolopts & WAKE_MAGIC) {
173 config |= MLX4_EN_WOL_DO_MODIFY | MLX4_EN_WOL_ENABLED |
174 MLX4_EN_WOL_MAGIC;
175 } else {
176 config &= ~(MLX4_EN_WOL_ENABLED | MLX4_EN_WOL_MAGIC);
177 config |= MLX4_EN_WOL_DO_MODIFY;
178 }
179
180 err = mlx4_wol_write(priv->mdev->dev, config, priv->port);
181 if (err)
182 en_err(priv, "Failed to set WoL information\n");
183
184 return err;
185 }
186
187 static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
188 {
189 struct mlx4_en_priv *priv = netdev_priv(dev);
190 int bit_count = hweight64(priv->stats_bitmap);
191
192 switch (sset) {
193 case ETH_SS_STATS:
194 return (priv->stats_bitmap ? bit_count : NUM_ALL_STATS) +
195 (priv->tx_ring_num + priv->rx_ring_num) * 2;
196 case ETH_SS_TEST:
197 return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
198 & MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
199 default:
200 return -EOPNOTSUPP;
201 }
202 }
203
204 static void mlx4_en_get_ethtool_stats(struct net_device *dev,
205 struct ethtool_stats *stats, uint64_t *data)
206 {
207 struct mlx4_en_priv *priv = netdev_priv(dev);
208 int index = 0;
209 int i, j = 0;
210
211 spin_lock_bh(&priv->stats_lock);
212
213 if (!(priv->stats_bitmap)) {
214 for (i = 0; i < NUM_MAIN_STATS; i++)
215 data[index++] =
216 ((unsigned long *) &priv->stats)[i];
217 for (i = 0; i < NUM_PORT_STATS; i++)
218 data[index++] =
219 ((unsigned long *) &priv->port_stats)[i];
220 for (i = 0; i < NUM_PKT_STATS; i++)
221 data[index++] =
222 ((unsigned long *) &priv->pkstats)[i];
223 } else {
224 for (i = 0; i < NUM_MAIN_STATS; i++) {
225 if ((priv->stats_bitmap >> j) & 1)
226 data[index++] =
227 ((unsigned long *) &priv->stats)[i];
228 j++;
229 }
230 for (i = 0; i < NUM_PORT_STATS; i++) {
231 if ((priv->stats_bitmap >> j) & 1)
232 data[index++] =
233 ((unsigned long *) &priv->port_stats)[i];
234 j++;
235 }
236 }
237 for (i = 0; i < priv->tx_ring_num; i++) {
238 data[index++] = priv->tx_ring[i].packets;
239 data[index++] = priv->tx_ring[i].bytes;
240 }
241 for (i = 0; i < priv->rx_ring_num; i++) {
242 data[index++] = priv->rx_ring[i].packets;
243 data[index++] = priv->rx_ring[i].bytes;
244 }
245 spin_unlock_bh(&priv->stats_lock);
246
247 }
248
249 static void mlx4_en_self_test(struct net_device *dev,
250 struct ethtool_test *etest, u64 *buf)
251 {
252 mlx4_en_ex_selftest(dev, &etest->flags, buf);
253 }
254
255 static void mlx4_en_get_strings(struct net_device *dev,
256 uint32_t stringset, uint8_t *data)
257 {
258 struct mlx4_en_priv *priv = netdev_priv(dev);
259 int index = 0;
260 int i;
261
262 switch (stringset) {
263 case ETH_SS_TEST:
264 for (i = 0; i < MLX4_EN_NUM_SELF_TEST - 2; i++)
265 strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
266 if (priv->mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UC_LOOPBACK)
267 for (; i < MLX4_EN_NUM_SELF_TEST; i++)
268 strcpy(data + i * ETH_GSTRING_LEN, mlx4_en_test_names[i]);
269 break;
270
271 case ETH_SS_STATS:
272 /* Add main counters */
273 if (!priv->stats_bitmap) {
274 for (i = 0; i < NUM_MAIN_STATS; i++)
275 strcpy(data + (index++) * ETH_GSTRING_LEN,
276 main_strings[i]);
277 for (i = 0; i < NUM_PORT_STATS; i++)
278 strcpy(data + (index++) * ETH_GSTRING_LEN,
279 main_strings[i +
280 NUM_MAIN_STATS]);
281 for (i = 0; i < NUM_PKT_STATS; i++)
282 strcpy(data + (index++) * ETH_GSTRING_LEN,
283 main_strings[i +
284 NUM_MAIN_STATS +
285 NUM_PORT_STATS]);
286 } else
287 for (i = 0; i < NUM_MAIN_STATS + NUM_PORT_STATS; i++) {
288 if ((priv->stats_bitmap >> i) & 1) {
289 strcpy(data +
290 (index++) * ETH_GSTRING_LEN,
291 main_strings[i]);
292 }
293 if (!(priv->stats_bitmap >> i))
294 break;
295 }
296 for (i = 0; i < priv->tx_ring_num; i++) {
297 sprintf(data + (index++) * ETH_GSTRING_LEN,
298 "tx%d_packets", i);
299 sprintf(data + (index++) * ETH_GSTRING_LEN,
300 "tx%d_bytes", i);
301 }
302 for (i = 0; i < priv->rx_ring_num; i++) {
303 sprintf(data + (index++) * ETH_GSTRING_LEN,
304 "rx%d_packets", i);
305 sprintf(data + (index++) * ETH_GSTRING_LEN,
306 "rx%d_bytes", i);
307 }
308 break;
309 }
310 }
311
312 static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
313 {
314 struct mlx4_en_priv *priv = netdev_priv(dev);
315 int trans_type;
316
317 cmd->autoneg = AUTONEG_DISABLE;
318 cmd->supported = SUPPORTED_10000baseT_Full;
319 cmd->advertising = ADVERTISED_10000baseT_Full;
320
321 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
322 return -ENOMEM;
323
324 trans_type = priv->port_state.transciver;
325 if (netif_carrier_ok(dev)) {
326 ethtool_cmd_speed_set(cmd, priv->port_state.link_speed);
327 cmd->duplex = DUPLEX_FULL;
328 } else {
329 ethtool_cmd_speed_set(cmd, -1);
330 cmd->duplex = -1;
331 }
332
333 if (trans_type > 0 && trans_type <= 0xC) {
334 cmd->port = PORT_FIBRE;
335 cmd->transceiver = XCVR_EXTERNAL;
336 cmd->supported |= SUPPORTED_FIBRE;
337 cmd->advertising |= ADVERTISED_FIBRE;
338 } else if (trans_type == 0x80 || trans_type == 0) {
339 cmd->port = PORT_TP;
340 cmd->transceiver = XCVR_INTERNAL;
341 cmd->supported |= SUPPORTED_TP;
342 cmd->advertising |= ADVERTISED_TP;
343 } else {
344 cmd->port = -1;
345 cmd->transceiver = -1;
346 }
347 return 0;
348 }
349
350 static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
351 {
352 if ((cmd->autoneg == AUTONEG_ENABLE) ||
353 (ethtool_cmd_speed(cmd) != SPEED_10000) ||
354 (cmd->duplex != DUPLEX_FULL))
355 return -EINVAL;
356
357 /* Nothing to change */
358 return 0;
359 }
360
361 static int mlx4_en_get_coalesce(struct net_device *dev,
362 struct ethtool_coalesce *coal)
363 {
364 struct mlx4_en_priv *priv = netdev_priv(dev);
365
366 coal->tx_coalesce_usecs = priv->tx_usecs;
367 coal->tx_max_coalesced_frames = priv->tx_frames;
368 coal->rx_coalesce_usecs = priv->rx_usecs;
369 coal->rx_max_coalesced_frames = priv->rx_frames;
370
371 coal->pkt_rate_low = priv->pkt_rate_low;
372 coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
373 coal->pkt_rate_high = priv->pkt_rate_high;
374 coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
375 coal->rate_sample_interval = priv->sample_interval;
376 coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
377 return 0;
378 }
379
380 static int mlx4_en_set_coalesce(struct net_device *dev,
381 struct ethtool_coalesce *coal)
382 {
383 struct mlx4_en_priv *priv = netdev_priv(dev);
384 int err, i;
385
386 priv->rx_frames = (coal->rx_max_coalesced_frames ==
387 MLX4_EN_AUTO_CONF) ?
388 MLX4_EN_RX_COAL_TARGET :
389 coal->rx_max_coalesced_frames;
390 priv->rx_usecs = (coal->rx_coalesce_usecs ==
391 MLX4_EN_AUTO_CONF) ?
392 MLX4_EN_RX_COAL_TIME :
393 coal->rx_coalesce_usecs;
394
395 /* Setting TX coalescing parameters */
396 if (coal->tx_coalesce_usecs != priv->tx_usecs ||
397 coal->tx_max_coalesced_frames != priv->tx_frames) {
398 priv->tx_usecs = coal->tx_coalesce_usecs;
399 priv->tx_frames = coal->tx_max_coalesced_frames;
400 for (i = 0; i < priv->tx_ring_num; i++) {
401 priv->tx_cq[i].moder_cnt = priv->tx_frames;
402 priv->tx_cq[i].moder_time = priv->tx_usecs;
403 if (mlx4_en_set_cq_moder(priv, &priv->tx_cq[i])) {
404 en_warn(priv, "Failed changing moderation "
405 "for TX cq %d\n", i);
406 }
407 }
408 }
409
410 /* Set adaptive coalescing params */
411 priv->pkt_rate_low = coal->pkt_rate_low;
412 priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
413 priv->pkt_rate_high = coal->pkt_rate_high;
414 priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
415 priv->sample_interval = coal->rate_sample_interval;
416 priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
417 if (priv->adaptive_rx_coal)
418 return 0;
419
420 for (i = 0; i < priv->rx_ring_num; i++) {
421 priv->rx_cq[i].moder_cnt = priv->rx_frames;
422 priv->rx_cq[i].moder_time = priv->rx_usecs;
423 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
424 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
425 if (err)
426 return err;
427 }
428 return 0;
429 }
430
431 static int mlx4_en_set_pauseparam(struct net_device *dev,
432 struct ethtool_pauseparam *pause)
433 {
434 struct mlx4_en_priv *priv = netdev_priv(dev);
435 struct mlx4_en_dev *mdev = priv->mdev;
436 int err;
437
438 priv->prof->tx_pause = pause->tx_pause != 0;
439 priv->prof->rx_pause = pause->rx_pause != 0;
440 err = mlx4_SET_PORT_general(mdev->dev, priv->port,
441 priv->rx_skb_size + ETH_FCS_LEN,
442 priv->prof->tx_pause,
443 priv->prof->tx_ppp,
444 priv->prof->rx_pause,
445 priv->prof->rx_ppp);
446 if (err)
447 en_err(priv, "Failed setting pause params\n");
448
449 return err;
450 }
451
452 static void mlx4_en_get_pauseparam(struct net_device *dev,
453 struct ethtool_pauseparam *pause)
454 {
455 struct mlx4_en_priv *priv = netdev_priv(dev);
456
457 pause->tx_pause = priv->prof->tx_pause;
458 pause->rx_pause = priv->prof->rx_pause;
459 }
460
461 static int mlx4_en_set_ringparam(struct net_device *dev,
462 struct ethtool_ringparam *param)
463 {
464 struct mlx4_en_priv *priv = netdev_priv(dev);
465 struct mlx4_en_dev *mdev = priv->mdev;
466 u32 rx_size, tx_size;
467 int port_up = 0;
468 int err = 0;
469 int i;
470
471 if (param->rx_jumbo_pending || param->rx_mini_pending)
472 return -EINVAL;
473
474 rx_size = roundup_pow_of_two(param->rx_pending);
475 rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
476 rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
477 tx_size = roundup_pow_of_two(param->tx_pending);
478 tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
479 tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
480
481 if (rx_size == (priv->port_up ? priv->rx_ring[0].actual_size :
482 priv->rx_ring[0].size) &&
483 tx_size == priv->tx_ring[0].size)
484 return 0;
485
486 mutex_lock(&mdev->state_lock);
487 if (priv->port_up) {
488 port_up = 1;
489 mlx4_en_stop_port(dev);
490 }
491
492 mlx4_en_free_resources(priv);
493
494 priv->prof->tx_ring_size = tx_size;
495 priv->prof->rx_ring_size = rx_size;
496
497 err = mlx4_en_alloc_resources(priv);
498 if (err) {
499 en_err(priv, "Failed reallocating port resources\n");
500 goto out;
501 }
502 if (port_up) {
503 err = mlx4_en_start_port(dev);
504 if (err)
505 en_err(priv, "Failed starting port\n");
506 }
507
508 for (i = 0; i < priv->rx_ring_num; i++) {
509 priv->rx_cq[i].moder_cnt = priv->rx_frames;
510 priv->rx_cq[i].moder_time = priv->rx_usecs;
511 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
512 err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
513 if (err)
514 goto out;
515 }
516
517 out:
518 mutex_unlock(&mdev->state_lock);
519 return err;
520 }
521
522 static void mlx4_en_get_ringparam(struct net_device *dev,
523 struct ethtool_ringparam *param)
524 {
525 struct mlx4_en_priv *priv = netdev_priv(dev);
526
527 memset(param, 0, sizeof(*param));
528 param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
529 param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
530 param->rx_pending = priv->port_up ?
531 priv->rx_ring[0].actual_size : priv->rx_ring[0].size;
532 param->tx_pending = priv->tx_ring[0].size;
533 }
534
535 static u32 mlx4_en_get_rxfh_indir_size(struct net_device *dev)
536 {
537 struct mlx4_en_priv *priv = netdev_priv(dev);
538
539 return priv->rx_ring_num;
540 }
541
542 static int mlx4_en_get_rxfh_indir(struct net_device *dev, u32 *ring_index)
543 {
544 struct mlx4_en_priv *priv = netdev_priv(dev);
545 struct mlx4_en_rss_map *rss_map = &priv->rss_map;
546 int rss_rings;
547 size_t n = priv->rx_ring_num;
548 int err = 0;
549
550 rss_rings = priv->prof->rss_rings ?: priv->rx_ring_num;
551
552 while (n--) {
553 ring_index[n] = rss_map->qps[n % rss_rings].qpn -
554 rss_map->base_qpn;
555 }
556
557 return err;
558 }
559
560 static int mlx4_en_set_rxfh_indir(struct net_device *dev,
561 const u32 *ring_index)
562 {
563 struct mlx4_en_priv *priv = netdev_priv(dev);
564 struct mlx4_en_dev *mdev = priv->mdev;
565 int port_up = 0;
566 int err = 0;
567 int i;
568 int rss_rings = 0;
569
570 /* Calculate RSS table size and make sure flows are spread evenly
571 * between rings
572 */
573 for (i = 0; i < priv->rx_ring_num; i++) {
574 if (i > 0 && !ring_index[i] && !rss_rings)
575 rss_rings = i;
576
577 if (ring_index[i] != (i % (rss_rings ?: priv->rx_ring_num)))
578 return -EINVAL;
579 }
580
581 if (!rss_rings)
582 rss_rings = priv->rx_ring_num;
583
584 /* RSS table size must be an order of 2 */
585 if (!is_power_of_2(rss_rings))
586 return -EINVAL;
587
588 mutex_lock(&mdev->state_lock);
589 if (priv->port_up) {
590 port_up = 1;
591 mlx4_en_stop_port(dev);
592 }
593
594 priv->prof->rss_rings = rss_rings;
595
596 if (port_up) {
597 err = mlx4_en_start_port(dev);
598 if (err)
599 en_err(priv, "Failed starting port\n");
600 }
601
602 mutex_unlock(&mdev->state_lock);
603 return err;
604 }
605
606 #define all_zeros_or_all_ones(field) \
607 ((field) == 0 || (field) == (__force typeof(field))-1)
608
609 static int mlx4_en_validate_flow(struct net_device *dev,
610 struct ethtool_rxnfc *cmd)
611 {
612 struct ethtool_usrip4_spec *l3_mask;
613 struct ethtool_tcpip4_spec *l4_mask;
614 struct ethhdr *eth_mask;
615 u64 full_mac = ~0ull;
616 u64 zero_mac = 0;
617
618 if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
619 return -EINVAL;
620
621 switch (cmd->fs.flow_type & ~FLOW_EXT) {
622 case TCP_V4_FLOW:
623 case UDP_V4_FLOW:
624 if (cmd->fs.m_u.tcp_ip4_spec.tos)
625 return -EINVAL;
626 l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
627 /* don't allow mask which isn't all 0 or 1 */
628 if (!all_zeros_or_all_ones(l4_mask->ip4src) ||
629 !all_zeros_or_all_ones(l4_mask->ip4dst) ||
630 !all_zeros_or_all_ones(l4_mask->psrc) ||
631 !all_zeros_or_all_ones(l4_mask->pdst))
632 return -EINVAL;
633 break;
634 case IP_USER_FLOW:
635 l3_mask = &cmd->fs.m_u.usr_ip4_spec;
636 if (l3_mask->l4_4_bytes || l3_mask->tos || l3_mask->proto ||
637 cmd->fs.h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4 ||
638 (!l3_mask->ip4src && !l3_mask->ip4dst) ||
639 !all_zeros_or_all_ones(l3_mask->ip4src) ||
640 !all_zeros_or_all_ones(l3_mask->ip4dst))
641 return -EINVAL;
642 break;
643 case ETHER_FLOW:
644 eth_mask = &cmd->fs.m_u.ether_spec;
645 /* source mac mask must not be set */
646 if (memcmp(eth_mask->h_source, &zero_mac, ETH_ALEN))
647 return -EINVAL;
648
649 /* dest mac mask must be ff:ff:ff:ff:ff:ff */
650 if (memcmp(eth_mask->h_dest, &full_mac, ETH_ALEN))
651 return -EINVAL;
652
653 if (!all_zeros_or_all_ones(eth_mask->h_proto))
654 return -EINVAL;
655 break;
656 default:
657 return -EINVAL;
658 }
659
660 if ((cmd->fs.flow_type & FLOW_EXT)) {
661 if (cmd->fs.m_ext.vlan_etype ||
662 !(cmd->fs.m_ext.vlan_tci == 0 ||
663 cmd->fs.m_ext.vlan_tci == cpu_to_be16(0xfff)))
664 return -EINVAL;
665 }
666
667 return 0;
668 }
669
670 static int add_ip_rule(struct mlx4_en_priv *priv,
671 struct ethtool_rxnfc *cmd,
672 struct list_head *list_h)
673 {
674 struct mlx4_spec_list *spec_l3;
675 struct ethtool_usrip4_spec *l3_mask = &cmd->fs.m_u.usr_ip4_spec;
676
677 spec_l3 = kzalloc(sizeof *spec_l3, GFP_KERNEL);
678 if (!spec_l3) {
679 en_err(priv, "Fail to alloc ethtool rule.\n");
680 return -ENOMEM;
681 }
682
683 spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
684 spec_l3->ipv4.src_ip = cmd->fs.h_u.usr_ip4_spec.ip4src;
685 if (l3_mask->ip4src)
686 spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
687 spec_l3->ipv4.dst_ip = cmd->fs.h_u.usr_ip4_spec.ip4dst;
688 if (l3_mask->ip4dst)
689 spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
690 list_add_tail(&spec_l3->list, list_h);
691
692 return 0;
693 }
694
695 static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
696 struct ethtool_rxnfc *cmd,
697 struct list_head *list_h, int proto)
698 {
699 struct mlx4_spec_list *spec_l3;
700 struct mlx4_spec_list *spec_l4;
701 struct ethtool_tcpip4_spec *l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
702
703 spec_l3 = kzalloc(sizeof *spec_l3, GFP_KERNEL);
704 spec_l4 = kzalloc(sizeof *spec_l4, GFP_KERNEL);
705 if (!spec_l4 || !spec_l3) {
706 en_err(priv, "Fail to alloc ethtool rule.\n");
707 kfree(spec_l3);
708 kfree(spec_l4);
709 return -ENOMEM;
710 }
711
712 spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
713
714 if (proto == TCP_V4_FLOW) {
715 spec_l4->id = MLX4_NET_TRANS_RULE_ID_TCP;
716 spec_l3->ipv4.src_ip = cmd->fs.h_u.tcp_ip4_spec.ip4src;
717 spec_l3->ipv4.dst_ip = cmd->fs.h_u.tcp_ip4_spec.ip4dst;
718 spec_l4->tcp_udp.src_port = cmd->fs.h_u.tcp_ip4_spec.psrc;
719 spec_l4->tcp_udp.dst_port = cmd->fs.h_u.tcp_ip4_spec.pdst;
720 } else {
721 spec_l4->id = MLX4_NET_TRANS_RULE_ID_UDP;
722 spec_l3->ipv4.src_ip = cmd->fs.h_u.udp_ip4_spec.ip4src;
723 spec_l3->ipv4.dst_ip = cmd->fs.h_u.udp_ip4_spec.ip4dst;
724 spec_l4->tcp_udp.src_port = cmd->fs.h_u.udp_ip4_spec.psrc;
725 spec_l4->tcp_udp.dst_port = cmd->fs.h_u.udp_ip4_spec.pdst;
726 }
727
728 if (l4_mask->ip4src)
729 spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
730 if (l4_mask->ip4dst)
731 spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
732
733 if (l4_mask->psrc)
734 spec_l4->tcp_udp.src_port_msk = EN_ETHTOOL_SHORT_MASK;
735 if (l4_mask->pdst)
736 spec_l4->tcp_udp.dst_port_msk = EN_ETHTOOL_SHORT_MASK;
737
738 list_add_tail(&spec_l3->list, list_h);
739 list_add_tail(&spec_l4->list, list_h);
740
741 return 0;
742 }
743
744 static int mlx4_en_ethtool_to_net_trans_rule(struct net_device *dev,
745 struct ethtool_rxnfc *cmd,
746 struct list_head *rule_list_h)
747 {
748 int err;
749 u64 mac;
750 __be64 be_mac;
751 struct ethhdr *eth_spec;
752 struct mlx4_en_priv *priv = netdev_priv(dev);
753 struct mlx4_spec_list *spec_l2;
754 __be64 mac_msk = cpu_to_be64(EN_ETHTOOL_MAC_MASK << 16);
755
756 err = mlx4_en_validate_flow(dev, cmd);
757 if (err)
758 return err;
759
760 spec_l2 = kzalloc(sizeof *spec_l2, GFP_KERNEL);
761 if (!spec_l2)
762 return -ENOMEM;
763
764 mac = priv->mac & EN_ETHTOOL_MAC_MASK;
765 be_mac = cpu_to_be64(mac << 16);
766
767 spec_l2->id = MLX4_NET_TRANS_RULE_ID_ETH;
768 memcpy(spec_l2->eth.dst_mac_msk, &mac_msk, ETH_ALEN);
769 if ((cmd->fs.flow_type & ~FLOW_EXT) != ETHER_FLOW)
770 memcpy(spec_l2->eth.dst_mac, &be_mac, ETH_ALEN);
771
772 if ((cmd->fs.flow_type & FLOW_EXT) && cmd->fs.m_ext.vlan_tci) {
773 spec_l2->eth.vlan_id = cmd->fs.h_ext.vlan_tci;
774 spec_l2->eth.vlan_id_msk = cpu_to_be16(0xfff);
775 }
776
777 list_add_tail(&spec_l2->list, rule_list_h);
778
779 switch (cmd->fs.flow_type & ~FLOW_EXT) {
780 case ETHER_FLOW:
781 eth_spec = &cmd->fs.h_u.ether_spec;
782 memcpy(&spec_l2->eth.dst_mac, eth_spec->h_dest, ETH_ALEN);
783 spec_l2->eth.ether_type = eth_spec->h_proto;
784 if (eth_spec->h_proto)
785 spec_l2->eth.ether_type_enable = 1;
786 break;
787 case IP_USER_FLOW:
788 err = add_ip_rule(priv, cmd, rule_list_h);
789 break;
790 case TCP_V4_FLOW:
791 err = add_tcp_udp_rule(priv, cmd, rule_list_h, TCP_V4_FLOW);
792 break;
793 case UDP_V4_FLOW:
794 err = add_tcp_udp_rule(priv, cmd, rule_list_h, UDP_V4_FLOW);
795 break;
796 }
797
798 return err;
799 }
800
801 static int mlx4_en_flow_replace(struct net_device *dev,
802 struct ethtool_rxnfc *cmd)
803 {
804 int err;
805 struct mlx4_en_priv *priv = netdev_priv(dev);
806 struct ethtool_flow_id *loc_rule;
807 struct mlx4_spec_list *spec, *tmp_spec;
808 u32 qpn;
809 u64 reg_id;
810
811 struct mlx4_net_trans_rule rule = {
812 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
813 .exclusive = 0,
814 .allow_loopback = 1,
815 .promisc_mode = MLX4_FS_PROMISC_NONE,
816 };
817
818 rule.port = priv->port;
819 rule.priority = MLX4_DOMAIN_ETHTOOL | cmd->fs.location;
820 INIT_LIST_HEAD(&rule.list);
821
822 /* Allow direct QP attaches if the EN_ETHTOOL_QP_ATTACH flag is set */
823 if (cmd->fs.ring_cookie == RX_CLS_FLOW_DISC)
824 return -EINVAL;
825 else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) {
826 qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1);
827 } else {
828 if (cmd->fs.ring_cookie >= priv->rx_ring_num) {
829 en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist.\n",
830 cmd->fs.ring_cookie);
831 return -EINVAL;
832 }
833 qpn = priv->rss_map.qps[cmd->fs.ring_cookie].qpn;
834 if (!qpn) {
835 en_warn(priv, "rxnfc: RX ring (%llu) is inactive.\n",
836 cmd->fs.ring_cookie);
837 return -EINVAL;
838 }
839 }
840 rule.qpn = qpn;
841 err = mlx4_en_ethtool_to_net_trans_rule(dev, cmd, &rule.list);
842 if (err)
843 goto out_free_list;
844
845 loc_rule = &priv->ethtool_rules[cmd->fs.location];
846 if (loc_rule->id) {
847 err = mlx4_flow_detach(priv->mdev->dev, loc_rule->id);
848 if (err) {
849 en_err(priv, "Fail to detach network rule at location %d. registration id = %llx\n",
850 cmd->fs.location, loc_rule->id);
851 goto out_free_list;
852 }
853 loc_rule->id = 0;
854 memset(&loc_rule->flow_spec, 0,
855 sizeof(struct ethtool_rx_flow_spec));
856 }
857 err = mlx4_flow_attach(priv->mdev->dev, &rule, &reg_id);
858 if (err) {
859 en_err(priv, "Fail to attach network rule at location %d.\n",
860 cmd->fs.location);
861 goto out_free_list;
862 }
863 loc_rule->id = reg_id;
864 memcpy(&loc_rule->flow_spec, &cmd->fs,
865 sizeof(struct ethtool_rx_flow_spec));
866
867 out_free_list:
868 list_for_each_entry_safe(spec, tmp_spec, &rule.list, list) {
869 list_del(&spec->list);
870 kfree(spec);
871 }
872 return err;
873 }
874
875 static int mlx4_en_flow_detach(struct net_device *dev,
876 struct ethtool_rxnfc *cmd)
877 {
878 int err = 0;
879 struct ethtool_flow_id *rule;
880 struct mlx4_en_priv *priv = netdev_priv(dev);
881
882 if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
883 return -EINVAL;
884
885 rule = &priv->ethtool_rules[cmd->fs.location];
886 if (!rule->id) {
887 err = -ENOENT;
888 goto out;
889 }
890
891 err = mlx4_flow_detach(priv->mdev->dev, rule->id);
892 if (err) {
893 en_err(priv, "Fail to detach network rule at location %d. registration id = 0x%llx\n",
894 cmd->fs.location, rule->id);
895 goto out;
896 }
897 rule->id = 0;
898 memset(&rule->flow_spec, 0, sizeof(struct ethtool_rx_flow_spec));
899 out:
900 return err;
901
902 }
903
904 static int mlx4_en_get_flow(struct net_device *dev, struct ethtool_rxnfc *cmd,
905 int loc)
906 {
907 int err = 0;
908 struct ethtool_flow_id *rule;
909 struct mlx4_en_priv *priv = netdev_priv(dev);
910
911 if (loc < 0 || loc >= MAX_NUM_OF_FS_RULES)
912 return -EINVAL;
913
914 rule = &priv->ethtool_rules[loc];
915 if (rule->id)
916 memcpy(&cmd->fs, &rule->flow_spec,
917 sizeof(struct ethtool_rx_flow_spec));
918 else
919 err = -ENOENT;
920
921 return err;
922 }
923
924 static int mlx4_en_get_num_flows(struct mlx4_en_priv *priv)
925 {
926
927 int i, res = 0;
928 for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) {
929 if (priv->ethtool_rules[i].id)
930 res++;
931 }
932 return res;
933
934 }
935
936 static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
937 u32 *rule_locs)
938 {
939 struct mlx4_en_priv *priv = netdev_priv(dev);
940 struct mlx4_en_dev *mdev = priv->mdev;
941 int err = 0;
942 int i = 0, priority = 0;
943
944 if ((cmd->cmd == ETHTOOL_GRXCLSRLCNT ||
945 cmd->cmd == ETHTOOL_GRXCLSRULE ||
946 cmd->cmd == ETHTOOL_GRXCLSRLALL) &&
947 mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
948 return -EINVAL;
949
950 switch (cmd->cmd) {
951 case ETHTOOL_GRXRINGS:
952 cmd->data = priv->rx_ring_num;
953 break;
954 case ETHTOOL_GRXCLSRLCNT:
955 cmd->rule_cnt = mlx4_en_get_num_flows(priv);
956 break;
957 case ETHTOOL_GRXCLSRULE:
958 err = mlx4_en_get_flow(dev, cmd, cmd->fs.location);
959 break;
960 case ETHTOOL_GRXCLSRLALL:
961 while ((!err || err == -ENOENT) && priority < cmd->rule_cnt) {
962 err = mlx4_en_get_flow(dev, cmd, i);
963 if (!err)
964 rule_locs[priority++] = i;
965 i++;
966 }
967 err = 0;
968 break;
969 default:
970 err = -EOPNOTSUPP;
971 break;
972 }
973
974 return err;
975 }
976
977 static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
978 {
979 int err = 0;
980 struct mlx4_en_priv *priv = netdev_priv(dev);
981 struct mlx4_en_dev *mdev = priv->mdev;
982
983 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
984 return -EINVAL;
985
986 switch (cmd->cmd) {
987 case ETHTOOL_SRXCLSRLINS:
988 err = mlx4_en_flow_replace(dev, cmd);
989 break;
990 case ETHTOOL_SRXCLSRLDEL:
991 err = mlx4_en_flow_detach(dev, cmd);
992 break;
993 default:
994 en_warn(priv, "Unsupported ethtool command. (%d)\n", cmd->cmd);
995 return -EINVAL;
996 }
997
998 return err;
999 }
1000
1001 const struct ethtool_ops mlx4_en_ethtool_ops = {
1002 .get_drvinfo = mlx4_en_get_drvinfo,
1003 .get_settings = mlx4_en_get_settings,
1004 .set_settings = mlx4_en_set_settings,
1005 .get_link = ethtool_op_get_link,
1006 .get_strings = mlx4_en_get_strings,
1007 .get_sset_count = mlx4_en_get_sset_count,
1008 .get_ethtool_stats = mlx4_en_get_ethtool_stats,
1009 .self_test = mlx4_en_self_test,
1010 .get_wol = mlx4_en_get_wol,
1011 .set_wol = mlx4_en_set_wol,
1012 .get_msglevel = mlx4_en_get_msglevel,
1013 .set_msglevel = mlx4_en_set_msglevel,
1014 .get_coalesce = mlx4_en_get_coalesce,
1015 .set_coalesce = mlx4_en_set_coalesce,
1016 .get_pauseparam = mlx4_en_get_pauseparam,
1017 .set_pauseparam = mlx4_en_set_pauseparam,
1018 .get_ringparam = mlx4_en_get_ringparam,
1019 .set_ringparam = mlx4_en_set_ringparam,
1020 .get_rxnfc = mlx4_en_get_rxnfc,
1021 .set_rxnfc = mlx4_en_set_rxnfc,
1022 .get_rxfh_indir_size = mlx4_en_get_rxfh_indir_size,
1023 .get_rxfh_indir = mlx4_en_get_rxfh_indir,
1024 .set_rxfh_indir = mlx4_en_set_rxfh_indir,
1025 };
1026
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1030
Linux kernel - Deliverables
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