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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2018
4 */
5
6#define KMSG_COMPONENT "qeth"
7#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
8
9#include <linux/ethtool.h>
10#include "qeth_core.h"
11
12
13#define QETH_TXQ_STAT(_name, _stat) { \
14 .name = _name, \
15 .offset = offsetof(struct qeth_out_q_stats, _stat) \
16}
17
18#define QETH_CARD_STAT(_name, _stat) { \
19 .name = _name, \
20 .offset = offsetof(struct qeth_card_stats, _stat) \
21}
22
23struct qeth_stats {
24 char name[ETH_GSTRING_LEN];
25 unsigned int offset;
26};
27
28static const struct qeth_stats txq_stats[] = {
29 QETH_TXQ_STAT("IO buffers", bufs),
30 QETH_TXQ_STAT("IO buffer elements", buf_elements),
31 QETH_TXQ_STAT("packed IO buffers", bufs_pack),
32 QETH_TXQ_STAT("skbs", tx_packets),
33 QETH_TXQ_STAT("packed skbs", skbs_pack),
34 QETH_TXQ_STAT("SG skbs", skbs_sg),
35 QETH_TXQ_STAT("HW csum skbs", skbs_csum),
36 QETH_TXQ_STAT("TSO skbs", skbs_tso),
37 QETH_TXQ_STAT("linearized skbs", skbs_linearized),
38 QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
39 QETH_TXQ_STAT("TSO bytes", tso_bytes),
40 QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
41 QETH_TXQ_STAT("Queue stopped", stopped),
42 QETH_TXQ_STAT("Doorbell", doorbell),
43 QETH_TXQ_STAT("IRQ for frames", coal_frames),
44 QETH_TXQ_STAT("Completion yield", completion_yield),
45 QETH_TXQ_STAT("Completion timer", completion_timer),
46};
47
48static const struct qeth_stats card_stats[] = {
49 QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
50 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
51 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
52 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
53 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
54 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),
55 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),
56 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),
57};
58
59#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
60#define CARD_STATS_LEN ARRAY_SIZE(card_stats)
61
62static void qeth_add_stat_data(u64 **dst, void *src,
63 const struct qeth_stats stats[],
64 unsigned int size)
65{
66 unsigned int i;
67 char *stat;
68
69 for (i = 0; i < size; i++) {
70 stat = (char *)src + stats[i].offset;
71 **dst = *(u64 *)stat;
72 (*dst)++;
73 }
74}
75
76static void qeth_add_stat_strings(u8 **data, const char *prefix,
77 const struct qeth_stats stats[],
78 unsigned int size)
79{
80 unsigned int i;
81
82 for (i = 0; i < size; i++) {
83 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
84 *data += ETH_GSTRING_LEN;
85 }
86}
87
88static int qeth_get_sset_count(struct net_device *dev, int stringset)
89{
90 struct qeth_card *card = dev->ml_priv;
91
92 switch (stringset) {
93 case ETH_SS_STATS:
94 return CARD_STATS_LEN +
95 card->qdio.no_out_queues * TXQ_STATS_LEN;
96 default:
97 return -EINVAL;
98 }
99}
100
101static void qeth_get_ethtool_stats(struct net_device *dev,
102 struct ethtool_stats *stats, u64 *data)
103{
104 struct qeth_card *card = dev->ml_priv;
105 unsigned int i;
106
107 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
108 for (i = 0; i < card->qdio.no_out_queues; i++)
109 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
110 txq_stats, TXQ_STATS_LEN);
111}
112
113static void __qeth_set_coalesce(struct net_device *dev,
114 struct qeth_qdio_out_q *queue,
115 struct ethtool_coalesce *coal)
116{
117 WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs);
118 WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames);
119
120 if (coal->tx_coalesce_usecs &&
121 netif_running(dev) &&
122 !qeth_out_queue_is_empty(queue))
123 qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs);
124}
125
126static int qeth_set_coalesce(struct net_device *dev,
127 struct ethtool_coalesce *coal)
128{
129 struct qeth_card *card = dev->ml_priv;
130 struct qeth_qdio_out_q *queue;
131 unsigned int i;
132
133 if (!IS_IQD(card))
134 return -EOPNOTSUPP;
135
136 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
137 return -EINVAL;
138
139 qeth_for_each_output_queue(card, queue, i)
140 __qeth_set_coalesce(dev, queue, coal);
141
142 return 0;
143}
144
145static void qeth_get_ringparam(struct net_device *dev,
146 struct ethtool_ringparam *param)
147{
148 struct qeth_card *card = dev->ml_priv;
149
150 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
151 param->rx_mini_max_pending = 0;
152 param->rx_jumbo_max_pending = 0;
153 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
154
155 param->rx_pending = card->qdio.in_buf_pool.buf_count;
156 param->rx_mini_pending = 0;
157 param->rx_jumbo_pending = 0;
158 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
159}
160
161static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
162{
163 struct qeth_card *card = dev->ml_priv;
164 char prefix[ETH_GSTRING_LEN] = "";
165 unsigned int i;
166
167 switch (stringset) {
168 case ETH_SS_STATS:
169 qeth_add_stat_strings(&data, prefix, card_stats,
170 CARD_STATS_LEN);
171 for (i = 0; i < card->qdio.no_out_queues; i++) {
172 snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
173 qeth_add_stat_strings(&data, prefix, txq_stats,
174 TXQ_STATS_LEN);
175 }
176 break;
177 default:
178 WARN_ON(1);
179 break;
180 }
181}
182
183static void qeth_get_drvinfo(struct net_device *dev,
184 struct ethtool_drvinfo *info)
185{
186 struct qeth_card *card = dev->ml_priv;
187
188 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
189 sizeof(info->driver));
190 strlcpy(info->fw_version, card->info.mcl_level,
191 sizeof(info->fw_version));
192 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
193 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
194}
195
196static void qeth_get_channels(struct net_device *dev,
197 struct ethtool_channels *channels)
198{
199 struct qeth_card *card = dev->ml_priv;
200
201 channels->max_rx = dev->num_rx_queues;
202 channels->max_tx = card->qdio.no_out_queues;
203 channels->max_other = 0;
204 channels->max_combined = 0;
205 channels->rx_count = dev->real_num_rx_queues;
206 channels->tx_count = dev->real_num_tx_queues;
207 channels->other_count = 0;
208 channels->combined_count = 0;
209}
210
211static int qeth_set_channels(struct net_device *dev,
212 struct ethtool_channels *channels)
213{
214 struct qeth_card *card = dev->ml_priv;
215
216 if (channels->rx_count == 0 || channels->tx_count == 0)
217 return -EINVAL;
218 if (channels->tx_count > card->qdio.no_out_queues)
219 return -EINVAL;
220
221 if (IS_IQD(card)) {
222 if (channels->tx_count < QETH_IQD_MIN_TXQ)
223 return -EINVAL;
224
225 /* Reject downgrade while running. It could push displaced
226 * ucast flows onto txq0, which is reserved for mcast.
227 */
228 if (netif_running(dev) &&
229 channels->tx_count < dev->real_num_tx_queues)
230 return -EPERM;
231 } else {
232 /* OSA still uses the legacy prio-queue mechanism: */
233 if (!IS_VM_NIC(card))
234 return -EOPNOTSUPP;
235 }
236
237 return qeth_set_real_num_tx_queues(card, channels->tx_count);
238}
239
240static int qeth_get_ts_info(struct net_device *dev,
241 struct ethtool_ts_info *info)
242{
243 struct qeth_card *card = dev->ml_priv;
244
245 if (!IS_IQD(card))
246 return -EOPNOTSUPP;
247
248 return ethtool_op_get_ts_info(dev, info);
249}
250
251static int qeth_get_tunable(struct net_device *dev,
252 const struct ethtool_tunable *tuna, void *data)
253{
254 struct qeth_priv *priv = netdev_priv(dev);
255
256 switch (tuna->id) {
257 case ETHTOOL_RX_COPYBREAK:
258 *(u32 *)data = priv->rx_copybreak;
259 return 0;
260 default:
261 return -EOPNOTSUPP;
262 }
263}
264
265static int qeth_set_tunable(struct net_device *dev,
266 const struct ethtool_tunable *tuna,
267 const void *data)
268{
269 struct qeth_priv *priv = netdev_priv(dev);
270
271 switch (tuna->id) {
272 case ETHTOOL_RX_COPYBREAK:
273 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);
274 return 0;
275 default:
276 return -EOPNOTSUPP;
277 }
278}
279
280static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,
281 struct ethtool_coalesce *coal)
282{
283 struct qeth_card *card = dev->ml_priv;
284 struct qeth_qdio_out_q *queue;
285
286 if (!IS_IQD(card))
287 return -EOPNOTSUPP;
288
289 if (__queue >= card->qdio.no_out_queues)
290 return -EINVAL;
291
292 queue = card->qdio.out_qs[__queue];
293
294 coal->tx_coalesce_usecs = queue->coalesce_usecs;
295 coal->tx_max_coalesced_frames = queue->max_coalesced_frames;
296 return 0;
297}
298
299static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
300 struct ethtool_coalesce *coal)
301{
302 struct qeth_card *card = dev->ml_priv;
303
304 if (!IS_IQD(card))
305 return -EOPNOTSUPP;
306
307 if (queue >= card->qdio.no_out_queues)
308 return -EINVAL;
309
310 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
311 return -EINVAL;
312
313 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);
314 return 0;
315}
316
317/* Helper function to fill 'advertising' and 'supported' which are the same. */
318/* Autoneg and full-duplex are supported and advertised unconditionally. */
319/* Always advertise and support all speeds up to specified, and only one */
320/* specified port type. */
321static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
322 int maxspeed, int porttype)
323{
324 ethtool_link_ksettings_zero_link_mode(cmd, supported);
325 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
326 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
327
328 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
329 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
330
331 switch (porttype) {
332 case PORT_TP:
333 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
334 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
335 break;
336 case PORT_FIBRE:
337 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
338 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
339 break;
340 default:
341 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
342 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
343 WARN_ON_ONCE(1);
344 }
345
346 /* partially does fall through, to also select lower speeds */
347 switch (maxspeed) {
348 case SPEED_25000:
349 ethtool_link_ksettings_add_link_mode(cmd, supported,
350 25000baseSR_Full);
351 ethtool_link_ksettings_add_link_mode(cmd, advertising,
352 25000baseSR_Full);
353 break;
354 case SPEED_10000:
355 ethtool_link_ksettings_add_link_mode(cmd, supported,
356 10000baseT_Full);
357 ethtool_link_ksettings_add_link_mode(cmd, advertising,
358 10000baseT_Full);
359 fallthrough;
360 case SPEED_1000:
361 ethtool_link_ksettings_add_link_mode(cmd, supported,
362 1000baseT_Full);
363 ethtool_link_ksettings_add_link_mode(cmd, advertising,
364 1000baseT_Full);
365 ethtool_link_ksettings_add_link_mode(cmd, supported,
366 1000baseT_Half);
367 ethtool_link_ksettings_add_link_mode(cmd, advertising,
368 1000baseT_Half);
369 fallthrough;
370 case SPEED_100:
371 ethtool_link_ksettings_add_link_mode(cmd, supported,
372 100baseT_Full);
373 ethtool_link_ksettings_add_link_mode(cmd, advertising,
374 100baseT_Full);
375 ethtool_link_ksettings_add_link_mode(cmd, supported,
376 100baseT_Half);
377 ethtool_link_ksettings_add_link_mode(cmd, advertising,
378 100baseT_Half);
379 fallthrough;
380 case SPEED_10:
381 ethtool_link_ksettings_add_link_mode(cmd, supported,
382 10baseT_Full);
383 ethtool_link_ksettings_add_link_mode(cmd, advertising,
384 10baseT_Full);
385 ethtool_link_ksettings_add_link_mode(cmd, supported,
386 10baseT_Half);
387 ethtool_link_ksettings_add_link_mode(cmd, advertising,
388 10baseT_Half);
389 break;
390 default:
391 ethtool_link_ksettings_add_link_mode(cmd, supported,
392 10baseT_Full);
393 ethtool_link_ksettings_add_link_mode(cmd, advertising,
394 10baseT_Full);
395 ethtool_link_ksettings_add_link_mode(cmd, supported,
396 10baseT_Half);
397 ethtool_link_ksettings_add_link_mode(cmd, advertising,
398 10baseT_Half);
399 WARN_ON_ONCE(1);
400 }
401}
402
403
404static int qeth_get_link_ksettings(struct net_device *netdev,
405 struct ethtool_link_ksettings *cmd)
406{
407 struct qeth_card *card = netdev->ml_priv;
408 enum qeth_link_types link_type;
409 struct carrier_info carrier_info;
410 int rc;
411
412 if (IS_IQD(card) || IS_VM_NIC(card))
413 link_type = QETH_LINK_TYPE_10GBIT_ETH;
414 else
415 link_type = card->info.link_type;
416
417 cmd->base.duplex = DUPLEX_FULL;
418 cmd->base.autoneg = AUTONEG_ENABLE;
419 cmd->base.phy_address = 0;
420 cmd->base.mdio_support = 0;
421 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
422 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
423
424 switch (link_type) {
425 case QETH_LINK_TYPE_FAST_ETH:
426 case QETH_LINK_TYPE_LANE_ETH100:
427 cmd->base.speed = SPEED_100;
428 cmd->base.port = PORT_TP;
429 break;
430 case QETH_LINK_TYPE_GBIT_ETH:
431 case QETH_LINK_TYPE_LANE_ETH1000:
432 cmd->base.speed = SPEED_1000;
433 cmd->base.port = PORT_FIBRE;
434 break;
435 case QETH_LINK_TYPE_10GBIT_ETH:
436 cmd->base.speed = SPEED_10000;
437 cmd->base.port = PORT_FIBRE;
438 break;
439 case QETH_LINK_TYPE_25GBIT_ETH:
440 cmd->base.speed = SPEED_25000;
441 cmd->base.port = PORT_FIBRE;
442 break;
443 default:
444 cmd->base.speed = SPEED_10;
445 cmd->base.port = PORT_TP;
446 }
447 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
448
449 /* Check if we can obtain more accurate information. */
450 /* If QUERY_CARD_INFO command is not supported or fails, */
451 /* just return the heuristics that was filled above. */
452 rc = qeth_query_card_info(card, &carrier_info);
453 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
454 return 0;
455 if (rc) /* report error from the hardware operation */
456 return rc;
457 /* on success, fill in the information got from the hardware */
458
459 netdev_dbg(netdev,
460 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
461 carrier_info.card_type,
462 carrier_info.port_mode,
463 carrier_info.port_speed);
464
465 /* Update attributes for which we've obtained more authoritative */
466 /* information, leave the rest the way they where filled above. */
467 switch (carrier_info.card_type) {
468 case CARD_INFO_TYPE_1G_COPPER_A:
469 case CARD_INFO_TYPE_1G_COPPER_B:
470 cmd->base.port = PORT_TP;
471 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
472 break;
473 case CARD_INFO_TYPE_1G_FIBRE_A:
474 case CARD_INFO_TYPE_1G_FIBRE_B:
475 cmd->base.port = PORT_FIBRE;
476 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
477 break;
478 case CARD_INFO_TYPE_10G_FIBRE_A:
479 case CARD_INFO_TYPE_10G_FIBRE_B:
480 cmd->base.port = PORT_FIBRE;
481 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
482 break;
483 }
484
485 switch (carrier_info.port_mode) {
486 case CARD_INFO_PORTM_FULLDUPLEX:
487 cmd->base.duplex = DUPLEX_FULL;
488 break;
489 case CARD_INFO_PORTM_HALFDUPLEX:
490 cmd->base.duplex = DUPLEX_HALF;
491 break;
492 }
493
494 switch (carrier_info.port_speed) {
495 case CARD_INFO_PORTS_10M:
496 cmd->base.speed = SPEED_10;
497 break;
498 case CARD_INFO_PORTS_100M:
499 cmd->base.speed = SPEED_100;
500 break;
501 case CARD_INFO_PORTS_1G:
502 cmd->base.speed = SPEED_1000;
503 break;
504 case CARD_INFO_PORTS_10G:
505 cmd->base.speed = SPEED_10000;
506 break;
507 case CARD_INFO_PORTS_25G:
508 cmd->base.speed = SPEED_25000;
509 break;
510 }
511
512 return 0;
513}
514
515const struct ethtool_ops qeth_ethtool_ops = {
516 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |
517 ETHTOOL_COALESCE_TX_MAX_FRAMES,
518 .get_link = ethtool_op_get_link,
519 .set_coalesce = qeth_set_coalesce,
520 .get_ringparam = qeth_get_ringparam,
521 .get_strings = qeth_get_strings,
522 .get_ethtool_stats = qeth_get_ethtool_stats,
523 .get_sset_count = qeth_get_sset_count,
524 .get_drvinfo = qeth_get_drvinfo,
525 .get_channels = qeth_get_channels,
526 .set_channels = qeth_set_channels,
527 .get_ts_info = qeth_get_ts_info,
528 .get_tunable = qeth_get_tunable,
529 .set_tunable = qeth_set_tunable,
530 .get_per_queue_coalesce = qeth_get_per_queue_coalesce,
531 .set_per_queue_coalesce = qeth_set_per_queue_coalesce,
532 .get_link_ksettings = qeth_get_link_ksettings,
533};
534
535const struct ethtool_ops qeth_osn_ethtool_ops = {
536 .get_strings = qeth_get_strings,
537 .get_ethtool_stats = qeth_get_ethtool_stats,
538 .get_sset_count = qeth_get_sset_count,
539 .get_drvinfo = qeth_get_drvinfo,
540};
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2018
4 */
5
6#define KMSG_COMPONENT "qeth"
7#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
8
9#include <linux/ethtool.h>
10#include "qeth_core.h"
11
12
13#define QETH_TXQ_STAT(_name, _stat) { \
14 .name = _name, \
15 .offset = offsetof(struct qeth_out_q_stats, _stat) \
16}
17
18#define QETH_CARD_STAT(_name, _stat) { \
19 .name = _name, \
20 .offset = offsetof(struct qeth_card_stats, _stat) \
21}
22
23struct qeth_stats {
24 char name[ETH_GSTRING_LEN];
25 unsigned int offset;
26};
27
28static const struct qeth_stats txq_stats[] = {
29 QETH_TXQ_STAT("IO buffers", bufs),
30 QETH_TXQ_STAT("IO buffer elements", buf_elements),
31 QETH_TXQ_STAT("packed IO buffers", bufs_pack),
32 QETH_TXQ_STAT("skbs", tx_packets),
33 QETH_TXQ_STAT("packed skbs", skbs_pack),
34 QETH_TXQ_STAT("SG skbs", skbs_sg),
35 QETH_TXQ_STAT("HW csum skbs", skbs_csum),
36 QETH_TXQ_STAT("TSO skbs", skbs_tso),
37 QETH_TXQ_STAT("linearized skbs", skbs_linearized),
38 QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
39 QETH_TXQ_STAT("TSO bytes", tso_bytes),
40 QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
41 QETH_TXQ_STAT("Queue stopped", stopped),
42 QETH_TXQ_STAT("Doorbell", doorbell),
43 QETH_TXQ_STAT("IRQ for frames", coal_frames),
44 QETH_TXQ_STAT("Completion IRQ", completion_irq),
45 QETH_TXQ_STAT("Completion yield", completion_yield),
46 QETH_TXQ_STAT("Completion timer", completion_timer),
47};
48
49static const struct qeth_stats card_stats[] = {
50 QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
51 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
52 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
53 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
54 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
55 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),
56 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),
57 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),
58};
59
60#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
61#define CARD_STATS_LEN ARRAY_SIZE(card_stats)
62
63static void qeth_add_stat_data(u64 **dst, void *src,
64 const struct qeth_stats stats[],
65 unsigned int size)
66{
67 unsigned int i;
68 char *stat;
69
70 for (i = 0; i < size; i++) {
71 stat = (char *)src + stats[i].offset;
72 **dst = *(u64 *)stat;
73 (*dst)++;
74 }
75}
76
77static void qeth_add_stat_strings(u8 **data, const char *prefix,
78 const struct qeth_stats stats[],
79 unsigned int size)
80{
81 unsigned int i;
82
83 for (i = 0; i < size; i++)
84 ethtool_sprintf(data, "%s%s", prefix, stats[i].name);
85}
86
87static int qeth_get_sset_count(struct net_device *dev, int stringset)
88{
89 struct qeth_card *card = dev->ml_priv;
90
91 switch (stringset) {
92 case ETH_SS_STATS:
93 return CARD_STATS_LEN +
94 card->qdio.no_out_queues * TXQ_STATS_LEN;
95 default:
96 return -EINVAL;
97 }
98}
99
100static void qeth_get_ethtool_stats(struct net_device *dev,
101 struct ethtool_stats *stats, u64 *data)
102{
103 struct qeth_card *card = dev->ml_priv;
104 unsigned int i;
105
106 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
107 for (i = 0; i < card->qdio.no_out_queues; i++)
108 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
109 txq_stats, TXQ_STATS_LEN);
110}
111
112static void __qeth_set_coalesce(struct net_device *dev,
113 struct qeth_qdio_out_q *queue,
114 struct ethtool_coalesce *coal)
115{
116 WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs);
117 WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames);
118
119 if (coal->tx_coalesce_usecs &&
120 netif_running(dev) &&
121 !qeth_out_queue_is_empty(queue))
122 qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs);
123}
124
125static int qeth_set_coalesce(struct net_device *dev,
126 struct ethtool_coalesce *coal,
127 struct kernel_ethtool_coalesce *kernel_coal,
128 struct netlink_ext_ack *extack)
129{
130 struct qeth_card *card = dev->ml_priv;
131 struct qeth_qdio_out_q *queue;
132 unsigned int i;
133
134 if (!IS_IQD(card))
135 return -EOPNOTSUPP;
136
137 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
138 return -EINVAL;
139
140 qeth_for_each_output_queue(card, queue, i)
141 __qeth_set_coalesce(dev, queue, coal);
142
143 return 0;
144}
145
146static void qeth_get_ringparam(struct net_device *dev,
147 struct ethtool_ringparam *param,
148 struct kernel_ethtool_ringparam *kernel_param,
149 struct netlink_ext_ack *extack)
150{
151 struct qeth_card *card = dev->ml_priv;
152
153 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
154 param->rx_mini_max_pending = 0;
155 param->rx_jumbo_max_pending = 0;
156 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
157
158 param->rx_pending = card->qdio.in_buf_pool.buf_count;
159 param->rx_mini_pending = 0;
160 param->rx_jumbo_pending = 0;
161 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
162}
163
164static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
165{
166 struct qeth_card *card = dev->ml_priv;
167 char prefix[ETH_GSTRING_LEN] = "";
168 unsigned int i;
169
170 switch (stringset) {
171 case ETH_SS_STATS:
172 qeth_add_stat_strings(&data, prefix, card_stats,
173 CARD_STATS_LEN);
174 for (i = 0; i < card->qdio.no_out_queues; i++) {
175 scnprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
176 qeth_add_stat_strings(&data, prefix, txq_stats,
177 TXQ_STATS_LEN);
178 }
179 break;
180 default:
181 WARN_ON(1);
182 break;
183 }
184}
185
186static void qeth_get_drvinfo(struct net_device *dev,
187 struct ethtool_drvinfo *info)
188{
189 struct qeth_card *card = dev->ml_priv;
190
191 strscpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
192 sizeof(info->driver));
193 strscpy(info->fw_version, card->info.mcl_level,
194 sizeof(info->fw_version));
195 scnprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
196 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
197}
198
199static void qeth_get_channels(struct net_device *dev,
200 struct ethtool_channels *channels)
201{
202 struct qeth_card *card = dev->ml_priv;
203
204 channels->max_rx = dev->num_rx_queues;
205 channels->max_tx = card->qdio.no_out_queues;
206 channels->max_other = 0;
207 channels->max_combined = 0;
208 channels->rx_count = dev->real_num_rx_queues;
209 channels->tx_count = dev->real_num_tx_queues;
210 channels->other_count = 0;
211 channels->combined_count = 0;
212}
213
214static int qeth_set_channels(struct net_device *dev,
215 struct ethtool_channels *channels)
216{
217 struct qeth_priv *priv = netdev_priv(dev);
218 struct qeth_card *card = dev->ml_priv;
219 int rc;
220
221 if (channels->rx_count == 0 || channels->tx_count == 0)
222 return -EINVAL;
223 if (channels->tx_count > card->qdio.no_out_queues)
224 return -EINVAL;
225
226 /* Prio-queueing needs all TX queues: */
227 if (qeth_uses_tx_prio_queueing(card))
228 return -EPERM;
229
230 if (IS_IQD(card)) {
231 if (channels->tx_count < QETH_IQD_MIN_TXQ)
232 return -EINVAL;
233
234 /* Reject downgrade while running. It could push displaced
235 * ucast flows onto txq0, which is reserved for mcast.
236 */
237 if (netif_running(dev) &&
238 channels->tx_count < dev->real_num_tx_queues)
239 return -EPERM;
240 }
241
242 rc = qeth_set_real_num_tx_queues(card, channels->tx_count);
243 if (!rc)
244 priv->tx_wanted_queues = channels->tx_count;
245
246 return rc;
247}
248
249static int qeth_get_ts_info(struct net_device *dev,
250 struct kernel_ethtool_ts_info *info)
251{
252 struct qeth_card *card = dev->ml_priv;
253
254 if (!IS_IQD(card))
255 return -EOPNOTSUPP;
256
257 return ethtool_op_get_ts_info(dev, info);
258}
259
260static int qeth_get_tunable(struct net_device *dev,
261 const struct ethtool_tunable *tuna, void *data)
262{
263 struct qeth_priv *priv = netdev_priv(dev);
264
265 switch (tuna->id) {
266 case ETHTOOL_RX_COPYBREAK:
267 *(u32 *)data = priv->rx_copybreak;
268 return 0;
269 default:
270 return -EOPNOTSUPP;
271 }
272}
273
274static int qeth_set_tunable(struct net_device *dev,
275 const struct ethtool_tunable *tuna,
276 const void *data)
277{
278 struct qeth_priv *priv = netdev_priv(dev);
279
280 switch (tuna->id) {
281 case ETHTOOL_RX_COPYBREAK:
282 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);
283 return 0;
284 default:
285 return -EOPNOTSUPP;
286 }
287}
288
289static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,
290 struct ethtool_coalesce *coal)
291{
292 struct qeth_card *card = dev->ml_priv;
293 struct qeth_qdio_out_q *queue;
294
295 if (!IS_IQD(card))
296 return -EOPNOTSUPP;
297
298 if (__queue >= card->qdio.no_out_queues)
299 return -EINVAL;
300
301 queue = card->qdio.out_qs[__queue];
302
303 coal->tx_coalesce_usecs = queue->coalesce_usecs;
304 coal->tx_max_coalesced_frames = queue->max_coalesced_frames;
305 return 0;
306}
307
308static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
309 struct ethtool_coalesce *coal)
310{
311 struct qeth_card *card = dev->ml_priv;
312
313 if (!IS_IQD(card))
314 return -EOPNOTSUPP;
315
316 if (queue >= card->qdio.no_out_queues)
317 return -EINVAL;
318
319 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
320 return -EINVAL;
321
322 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);
323 return 0;
324}
325
326/* Helper function to fill 'advertising' and 'supported' which are the same. */
327/* Autoneg and full-duplex are supported and advertised unconditionally. */
328/* Always advertise and support all speeds up to specified, and only one */
329/* specified port type. */
330static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd,
331 enum qeth_link_mode link_mode)
332{
333 ethtool_link_ksettings_zero_link_mode(cmd, supported);
334 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
335 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
336
337 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
338 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
339
340 switch (cmd->base.port) {
341 case PORT_TP:
342 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
343 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
344
345 switch (cmd->base.speed) {
346 case SPEED_10000:
347 ethtool_link_ksettings_add_link_mode(cmd, supported,
348 10000baseT_Full);
349 ethtool_link_ksettings_add_link_mode(cmd, advertising,
350 10000baseT_Full);
351 fallthrough;
352 case SPEED_1000:
353 ethtool_link_ksettings_add_link_mode(cmd, supported,
354 1000baseT_Full);
355 ethtool_link_ksettings_add_link_mode(cmd, advertising,
356 1000baseT_Full);
357 ethtool_link_ksettings_add_link_mode(cmd, supported,
358 1000baseT_Half);
359 ethtool_link_ksettings_add_link_mode(cmd, advertising,
360 1000baseT_Half);
361 fallthrough;
362 case SPEED_100:
363 ethtool_link_ksettings_add_link_mode(cmd, supported,
364 100baseT_Full);
365 ethtool_link_ksettings_add_link_mode(cmd, advertising,
366 100baseT_Full);
367 ethtool_link_ksettings_add_link_mode(cmd, supported,
368 100baseT_Half);
369 ethtool_link_ksettings_add_link_mode(cmd, advertising,
370 100baseT_Half);
371 fallthrough;
372 case SPEED_10:
373 ethtool_link_ksettings_add_link_mode(cmd, supported,
374 10baseT_Full);
375 ethtool_link_ksettings_add_link_mode(cmd, advertising,
376 10baseT_Full);
377 ethtool_link_ksettings_add_link_mode(cmd, supported,
378 10baseT_Half);
379 ethtool_link_ksettings_add_link_mode(cmd, advertising,
380 10baseT_Half);
381 break;
382 default:
383 break;
384 }
385
386 break;
387 case PORT_FIBRE:
388 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
389 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
390
391 switch (cmd->base.speed) {
392 case SPEED_25000:
393 ethtool_link_ksettings_add_link_mode(cmd, supported,
394 25000baseSR_Full);
395 ethtool_link_ksettings_add_link_mode(cmd, advertising,
396 25000baseSR_Full);
397 break;
398 case SPEED_10000:
399 if (link_mode == QETH_LINK_MODE_FIBRE_LONG) {
400 ethtool_link_ksettings_add_link_mode(cmd, supported,
401 10000baseLR_Full);
402 ethtool_link_ksettings_add_link_mode(cmd, advertising,
403 10000baseLR_Full);
404 } else if (link_mode == QETH_LINK_MODE_FIBRE_SHORT) {
405 ethtool_link_ksettings_add_link_mode(cmd, supported,
406 10000baseSR_Full);
407 ethtool_link_ksettings_add_link_mode(cmd, advertising,
408 10000baseSR_Full);
409 }
410 break;
411 case SPEED_1000:
412 ethtool_link_ksettings_add_link_mode(cmd, supported,
413 1000baseX_Full);
414 ethtool_link_ksettings_add_link_mode(cmd, advertising,
415 1000baseX_Full);
416 break;
417 default:
418 break;
419 }
420
421 break;
422 default:
423 break;
424 }
425}
426
427static int qeth_get_link_ksettings(struct net_device *netdev,
428 struct ethtool_link_ksettings *cmd)
429{
430 struct qeth_card *card = netdev->ml_priv;
431
432 QETH_CARD_TEXT(card, 4, "ethtglks");
433 cmd->base.speed = card->info.link_info.speed;
434 cmd->base.duplex = card->info.link_info.duplex;
435 cmd->base.port = card->info.link_info.port;
436 cmd->base.autoneg = AUTONEG_ENABLE;
437 cmd->base.phy_address = 0;
438 cmd->base.mdio_support = 0;
439 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
440 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
441
442 qeth_set_ethtool_link_modes(cmd, card->info.link_info.link_mode);
443
444 return 0;
445}
446
447const struct ethtool_ops qeth_ethtool_ops = {
448 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |
449 ETHTOOL_COALESCE_TX_MAX_FRAMES,
450 .get_link = ethtool_op_get_link,
451 .set_coalesce = qeth_set_coalesce,
452 .get_ringparam = qeth_get_ringparam,
453 .get_strings = qeth_get_strings,
454 .get_ethtool_stats = qeth_get_ethtool_stats,
455 .get_sset_count = qeth_get_sset_count,
456 .get_drvinfo = qeth_get_drvinfo,
457 .get_channels = qeth_get_channels,
458 .set_channels = qeth_set_channels,
459 .get_ts_info = qeth_get_ts_info,
460 .get_tunable = qeth_get_tunable,
461 .set_tunable = qeth_set_tunable,
462 .get_per_queue_coalesce = qeth_get_per_queue_coalesce,
463 .set_per_queue_coalesce = qeth_set_per_queue_coalesce,
464 .get_link_ksettings = qeth_get_link_ksettings,
465};