Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / net / ethernet / cisco / enic / enic_ethtool.c
blobefb9333c7cf80179560915f0e251f05252f1baa5
1 /**
2 * Copyright 2013 Cisco Systems, Inc. All rights reserved.
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
19 #include <linux/netdevice.h>
20 #include <linux/ethtool.h>
21 #include <linux/net_tstamp.h>
23 #include "enic_res.h"
24 #include "enic.h"
25 #include "enic_dev.h"
26 #include "enic_clsf.h"
27 #include "vnic_rss.h"
28 #include "vnic_stats.h"
30 struct enic_stat {
31 char name[ETH_GSTRING_LEN];
32 unsigned int index;
35 #define ENIC_TX_STAT(stat) { \
36 .name = #stat, \
37 .index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
40 #define ENIC_RX_STAT(stat) { \
41 .name = #stat, \
42 .index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
45 #define ENIC_GEN_STAT(stat) { \
46 .name = #stat, \
47 .index = offsetof(struct vnic_gen_stats, stat) / sizeof(u64)\
50 static const struct enic_stat enic_tx_stats[] = {
51 ENIC_TX_STAT(tx_frames_ok),
52 ENIC_TX_STAT(tx_unicast_frames_ok),
53 ENIC_TX_STAT(tx_multicast_frames_ok),
54 ENIC_TX_STAT(tx_broadcast_frames_ok),
55 ENIC_TX_STAT(tx_bytes_ok),
56 ENIC_TX_STAT(tx_unicast_bytes_ok),
57 ENIC_TX_STAT(tx_multicast_bytes_ok),
58 ENIC_TX_STAT(tx_broadcast_bytes_ok),
59 ENIC_TX_STAT(tx_drops),
60 ENIC_TX_STAT(tx_errors),
61 ENIC_TX_STAT(tx_tso),
64 static const struct enic_stat enic_rx_stats[] = {
65 ENIC_RX_STAT(rx_frames_ok),
66 ENIC_RX_STAT(rx_frames_total),
67 ENIC_RX_STAT(rx_unicast_frames_ok),
68 ENIC_RX_STAT(rx_multicast_frames_ok),
69 ENIC_RX_STAT(rx_broadcast_frames_ok),
70 ENIC_RX_STAT(rx_bytes_ok),
71 ENIC_RX_STAT(rx_unicast_bytes_ok),
72 ENIC_RX_STAT(rx_multicast_bytes_ok),
73 ENIC_RX_STAT(rx_broadcast_bytes_ok),
74 ENIC_RX_STAT(rx_drop),
75 ENIC_RX_STAT(rx_no_bufs),
76 ENIC_RX_STAT(rx_errors),
77 ENIC_RX_STAT(rx_rss),
78 ENIC_RX_STAT(rx_crc_errors),
79 ENIC_RX_STAT(rx_frames_64),
80 ENIC_RX_STAT(rx_frames_127),
81 ENIC_RX_STAT(rx_frames_255),
82 ENIC_RX_STAT(rx_frames_511),
83 ENIC_RX_STAT(rx_frames_1023),
84 ENIC_RX_STAT(rx_frames_1518),
85 ENIC_RX_STAT(rx_frames_to_max),
88 static const struct enic_stat enic_gen_stats[] = {
89 ENIC_GEN_STAT(dma_map_error),
92 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
93 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
94 static const unsigned int enic_n_gen_stats = ARRAY_SIZE(enic_gen_stats);
96 static void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
98 int i;
99 int intr;
101 for (i = 0; i < enic->rq_count; i++) {
102 intr = enic_msix_rq_intr(enic, i);
103 vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
107 static int enic_get_ksettings(struct net_device *netdev,
108 struct ethtool_link_ksettings *ecmd)
110 struct enic *enic = netdev_priv(netdev);
111 struct ethtool_link_settings *base = &ecmd->base;
113 ethtool_link_ksettings_add_link_mode(ecmd, supported,
114 10000baseT_Full);
115 ethtool_link_ksettings_add_link_mode(ecmd, supported, FIBRE);
116 ethtool_link_ksettings_add_link_mode(ecmd, advertising,
117 10000baseT_Full);
118 ethtool_link_ksettings_add_link_mode(ecmd, advertising, FIBRE);
119 base->port = PORT_FIBRE;
121 if (netif_carrier_ok(netdev)) {
122 base->speed = vnic_dev_port_speed(enic->vdev);
123 base->duplex = DUPLEX_FULL;
124 } else {
125 base->speed = SPEED_UNKNOWN;
126 base->duplex = DUPLEX_UNKNOWN;
129 base->autoneg = AUTONEG_DISABLE;
131 return 0;
134 static void enic_get_drvinfo(struct net_device *netdev,
135 struct ethtool_drvinfo *drvinfo)
137 struct enic *enic = netdev_priv(netdev);
138 struct vnic_devcmd_fw_info *fw_info;
139 int err;
141 err = enic_dev_fw_info(enic, &fw_info);
142 /* return only when pci_zalloc_consistent fails in vnic_dev_fw_info
143 * For other failures, like devcmd failure, we return previously
144 * recorded info.
146 if (err == -ENOMEM)
147 return;
149 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
150 strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
151 strlcpy(drvinfo->fw_version, fw_info->fw_version,
152 sizeof(drvinfo->fw_version));
153 strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
154 sizeof(drvinfo->bus_info));
157 static void enic_get_strings(struct net_device *netdev, u32 stringset,
158 u8 *data)
160 unsigned int i;
162 switch (stringset) {
163 case ETH_SS_STATS:
164 for (i = 0; i < enic_n_tx_stats; i++) {
165 memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
166 data += ETH_GSTRING_LEN;
168 for (i = 0; i < enic_n_rx_stats; i++) {
169 memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
170 data += ETH_GSTRING_LEN;
172 for (i = 0; i < enic_n_gen_stats; i++) {
173 memcpy(data, enic_gen_stats[i].name, ETH_GSTRING_LEN);
174 data += ETH_GSTRING_LEN;
176 break;
180 static void enic_get_ringparam(struct net_device *netdev,
181 struct ethtool_ringparam *ring)
183 struct enic *enic = netdev_priv(netdev);
184 struct vnic_enet_config *c = &enic->config;
186 ring->rx_max_pending = ENIC_MAX_RQ_DESCS;
187 ring->rx_pending = c->rq_desc_count;
188 ring->tx_max_pending = ENIC_MAX_WQ_DESCS;
189 ring->tx_pending = c->wq_desc_count;
192 static int enic_set_ringparam(struct net_device *netdev,
193 struct ethtool_ringparam *ring)
195 struct enic *enic = netdev_priv(netdev);
196 struct vnic_enet_config *c = &enic->config;
197 int running = netif_running(netdev);
198 unsigned int rx_pending;
199 unsigned int tx_pending;
200 int err = 0;
202 if (ring->rx_mini_max_pending || ring->rx_mini_pending) {
203 netdev_info(netdev,
204 "modifying mini ring params is not supported");
205 return -EINVAL;
207 if (ring->rx_jumbo_max_pending || ring->rx_jumbo_pending) {
208 netdev_info(netdev,
209 "modifying jumbo ring params is not supported");
210 return -EINVAL;
212 rx_pending = c->rq_desc_count;
213 tx_pending = c->wq_desc_count;
214 if (ring->rx_pending > ENIC_MAX_RQ_DESCS ||
215 ring->rx_pending < ENIC_MIN_RQ_DESCS) {
216 netdev_info(netdev, "rx pending (%u) not in range [%u,%u]",
217 ring->rx_pending, ENIC_MIN_RQ_DESCS,
218 ENIC_MAX_RQ_DESCS);
219 return -EINVAL;
221 if (ring->tx_pending > ENIC_MAX_WQ_DESCS ||
222 ring->tx_pending < ENIC_MIN_WQ_DESCS) {
223 netdev_info(netdev, "tx pending (%u) not in range [%u,%u]",
224 ring->tx_pending, ENIC_MIN_WQ_DESCS,
225 ENIC_MAX_WQ_DESCS);
226 return -EINVAL;
228 if (running)
229 dev_close(netdev);
230 c->rq_desc_count =
231 ring->rx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
232 c->wq_desc_count =
233 ring->tx_pending & 0xffffffe0; /* must be aligned to groups of 32 */
234 enic_free_vnic_resources(enic);
235 err = enic_alloc_vnic_resources(enic);
236 if (err) {
237 netdev_err(netdev,
238 "Failed to alloc vNIC resources, aborting\n");
239 enic_free_vnic_resources(enic);
240 goto err_out;
242 enic_init_vnic_resources(enic);
243 if (running) {
244 err = dev_open(netdev);
245 if (err)
246 goto err_out;
248 return 0;
249 err_out:
250 c->rq_desc_count = rx_pending;
251 c->wq_desc_count = tx_pending;
252 return err;
255 static int enic_get_sset_count(struct net_device *netdev, int sset)
257 switch (sset) {
258 case ETH_SS_STATS:
259 return enic_n_tx_stats + enic_n_rx_stats + enic_n_gen_stats;
260 default:
261 return -EOPNOTSUPP;
265 static void enic_get_ethtool_stats(struct net_device *netdev,
266 struct ethtool_stats *stats, u64 *data)
268 struct enic *enic = netdev_priv(netdev);
269 struct vnic_stats *vstats;
270 unsigned int i;
271 int err;
273 err = enic_dev_stats_dump(enic, &vstats);
274 /* return only when pci_zalloc_consistent fails in vnic_dev_stats_dump
275 * For other failures, like devcmd failure, we return previously
276 * recorded stats.
278 if (err == -ENOMEM)
279 return;
281 for (i = 0; i < enic_n_tx_stats; i++)
282 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
283 for (i = 0; i < enic_n_rx_stats; i++)
284 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
285 for (i = 0; i < enic_n_gen_stats; i++)
286 *(data++) = ((u64 *)&enic->gen_stats)[enic_gen_stats[i].index];
289 static u32 enic_get_msglevel(struct net_device *netdev)
291 struct enic *enic = netdev_priv(netdev);
292 return enic->msg_enable;
295 static void enic_set_msglevel(struct net_device *netdev, u32 value)
297 struct enic *enic = netdev_priv(netdev);
298 enic->msg_enable = value;
301 static int enic_get_coalesce(struct net_device *netdev,
302 struct ethtool_coalesce *ecmd)
304 struct enic *enic = netdev_priv(netdev);
305 struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
307 if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX)
308 ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
309 ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
310 if (rxcoal->use_adaptive_rx_coalesce)
311 ecmd->use_adaptive_rx_coalesce = 1;
312 ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
313 ecmd->rx_coalesce_usecs_high = rxcoal->range_end;
315 return 0;
318 static int enic_coalesce_valid(struct enic *enic,
319 struct ethtool_coalesce *ec)
321 u32 coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
322 u32 rx_coalesce_usecs_high = min_t(u32, coalesce_usecs_max,
323 ec->rx_coalesce_usecs_high);
324 u32 rx_coalesce_usecs_low = min_t(u32, coalesce_usecs_max,
325 ec->rx_coalesce_usecs_low);
327 if (ec->rx_max_coalesced_frames ||
328 ec->rx_coalesce_usecs_irq ||
329 ec->rx_max_coalesced_frames_irq ||
330 ec->tx_max_coalesced_frames ||
331 ec->tx_coalesce_usecs_irq ||
332 ec->tx_max_coalesced_frames_irq ||
333 ec->stats_block_coalesce_usecs ||
334 ec->use_adaptive_tx_coalesce ||
335 ec->pkt_rate_low ||
336 ec->rx_max_coalesced_frames_low ||
337 ec->tx_coalesce_usecs_low ||
338 ec->tx_max_coalesced_frames_low ||
339 ec->pkt_rate_high ||
340 ec->rx_max_coalesced_frames_high ||
341 ec->tx_coalesce_usecs_high ||
342 ec->tx_max_coalesced_frames_high ||
343 ec->rate_sample_interval)
344 return -EINVAL;
346 if ((vnic_dev_get_intr_mode(enic->vdev) != VNIC_DEV_INTR_MODE_MSIX) &&
347 ec->tx_coalesce_usecs)
348 return -EINVAL;
350 if ((ec->tx_coalesce_usecs > coalesce_usecs_max) ||
351 (ec->rx_coalesce_usecs > coalesce_usecs_max) ||
352 (ec->rx_coalesce_usecs_low > coalesce_usecs_max) ||
353 (ec->rx_coalesce_usecs_high > coalesce_usecs_max))
354 netdev_info(enic->netdev, "ethtool_set_coalesce: adaptor supports max coalesce value of %d. Setting max value.\n",
355 coalesce_usecs_max);
357 if (ec->rx_coalesce_usecs_high &&
358 (rx_coalesce_usecs_high <
359 rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
360 return -EINVAL;
362 return 0;
365 static int enic_set_coalesce(struct net_device *netdev,
366 struct ethtool_coalesce *ecmd)
368 struct enic *enic = netdev_priv(netdev);
369 u32 tx_coalesce_usecs;
370 u32 rx_coalesce_usecs;
371 u32 rx_coalesce_usecs_low;
372 u32 rx_coalesce_usecs_high;
373 u32 coalesce_usecs_max;
374 unsigned int i, intr;
375 int ret;
376 struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
378 ret = enic_coalesce_valid(enic, ecmd);
379 if (ret)
380 return ret;
381 coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
382 tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
383 coalesce_usecs_max);
384 rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
385 coalesce_usecs_max);
387 rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
388 coalesce_usecs_max);
389 rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
390 coalesce_usecs_max);
392 if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) {
393 for (i = 0; i < enic->wq_count; i++) {
394 intr = enic_msix_wq_intr(enic, i);
395 vnic_intr_coalescing_timer_set(&enic->intr[intr],
396 tx_coalesce_usecs);
398 enic->tx_coalesce_usecs = tx_coalesce_usecs;
400 rxcoal->use_adaptive_rx_coalesce = !!ecmd->use_adaptive_rx_coalesce;
401 if (!rxcoal->use_adaptive_rx_coalesce)
402 enic_intr_coal_set_rx(enic, rx_coalesce_usecs);
403 if (ecmd->rx_coalesce_usecs_high) {
404 rxcoal->range_end = rx_coalesce_usecs_high;
405 rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
406 rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
407 ENIC_AIC_LARGE_PKT_DIFF;
410 enic->rx_coalesce_usecs = rx_coalesce_usecs;
412 return 0;
415 static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
416 u32 *rule_locs)
418 int j, ret = 0, cnt = 0;
420 cmd->data = enic->rfs_h.max - enic->rfs_h.free;
421 for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
422 struct hlist_head *hhead;
423 struct hlist_node *tmp;
424 struct enic_rfs_fltr_node *n;
426 hhead = &enic->rfs_h.ht_head[j];
427 hlist_for_each_entry_safe(n, tmp, hhead, node) {
428 if (cnt == cmd->rule_cnt)
429 return -EMSGSIZE;
430 rule_locs[cnt] = n->fltr_id;
431 cnt++;
434 cmd->rule_cnt = cnt;
436 return ret;
439 static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
441 struct ethtool_rx_flow_spec *fsp =
442 (struct ethtool_rx_flow_spec *)&cmd->fs;
443 struct enic_rfs_fltr_node *n;
445 n = htbl_fltr_search(enic, (u16)fsp->location);
446 if (!n)
447 return -EINVAL;
448 switch (n->keys.basic.ip_proto) {
449 case IPPROTO_TCP:
450 fsp->flow_type = TCP_V4_FLOW;
451 break;
452 case IPPROTO_UDP:
453 fsp->flow_type = UDP_V4_FLOW;
454 break;
455 default:
456 return -EINVAL;
457 break;
460 fsp->h_u.tcp_ip4_spec.ip4src = flow_get_u32_src(&n->keys);
461 fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;
463 fsp->h_u.tcp_ip4_spec.ip4dst = flow_get_u32_dst(&n->keys);
464 fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;
466 fsp->h_u.tcp_ip4_spec.psrc = n->keys.ports.src;
467 fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;
469 fsp->h_u.tcp_ip4_spec.pdst = n->keys.ports.dst;
470 fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;
472 fsp->ring_cookie = n->rq_id;
474 return 0;
477 static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
478 u32 *rule_locs)
480 struct enic *enic = netdev_priv(dev);
481 int ret = 0;
483 switch (cmd->cmd) {
484 case ETHTOOL_GRXRINGS:
485 cmd->data = enic->rq_count;
486 break;
487 case ETHTOOL_GRXCLSRLCNT:
488 spin_lock_bh(&enic->rfs_h.lock);
489 cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
490 cmd->data = enic->rfs_h.max;
491 spin_unlock_bh(&enic->rfs_h.lock);
492 break;
493 case ETHTOOL_GRXCLSRLALL:
494 spin_lock_bh(&enic->rfs_h.lock);
495 ret = enic_grxclsrlall(enic, cmd, rule_locs);
496 spin_unlock_bh(&enic->rfs_h.lock);
497 break;
498 case ETHTOOL_GRXCLSRULE:
499 spin_lock_bh(&enic->rfs_h.lock);
500 ret = enic_grxclsrule(enic, cmd);
501 spin_unlock_bh(&enic->rfs_h.lock);
502 break;
503 default:
504 ret = -EOPNOTSUPP;
505 break;
508 return ret;
511 static int enic_get_tunable(struct net_device *dev,
512 const struct ethtool_tunable *tuna, void *data)
514 struct enic *enic = netdev_priv(dev);
515 int ret = 0;
517 switch (tuna->id) {
518 case ETHTOOL_RX_COPYBREAK:
519 *(u32 *)data = enic->rx_copybreak;
520 break;
521 default:
522 ret = -EINVAL;
523 break;
526 return ret;
529 static int enic_set_tunable(struct net_device *dev,
530 const struct ethtool_tunable *tuna,
531 const void *data)
533 struct enic *enic = netdev_priv(dev);
534 int ret = 0;
536 switch (tuna->id) {
537 case ETHTOOL_RX_COPYBREAK:
538 enic->rx_copybreak = *(u32 *)data;
539 break;
540 default:
541 ret = -EINVAL;
542 break;
545 return ret;
548 static u32 enic_get_rxfh_key_size(struct net_device *netdev)
550 return ENIC_RSS_LEN;
553 static int enic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
554 u8 *hfunc)
556 struct enic *enic = netdev_priv(netdev);
558 if (hkey)
559 memcpy(hkey, enic->rss_key, ENIC_RSS_LEN);
561 if (hfunc)
562 *hfunc = ETH_RSS_HASH_TOP;
564 return 0;
567 static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
568 const u8 *hkey, const u8 hfunc)
570 struct enic *enic = netdev_priv(netdev);
572 if ((hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) ||
573 indir)
574 return -EINVAL;
576 if (hkey)
577 memcpy(enic->rss_key, hkey, ENIC_RSS_LEN);
579 return __enic_set_rsskey(enic);
582 static int enic_get_ts_info(struct net_device *netdev,
583 struct ethtool_ts_info *info)
585 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
586 SOF_TIMESTAMPING_RX_SOFTWARE |
587 SOF_TIMESTAMPING_SOFTWARE;
589 return 0;
592 static const struct ethtool_ops enic_ethtool_ops = {
593 .get_drvinfo = enic_get_drvinfo,
594 .get_msglevel = enic_get_msglevel,
595 .set_msglevel = enic_set_msglevel,
596 .get_link = ethtool_op_get_link,
597 .get_strings = enic_get_strings,
598 .get_ringparam = enic_get_ringparam,
599 .set_ringparam = enic_set_ringparam,
600 .get_sset_count = enic_get_sset_count,
601 .get_ethtool_stats = enic_get_ethtool_stats,
602 .get_coalesce = enic_get_coalesce,
603 .set_coalesce = enic_set_coalesce,
604 .get_rxnfc = enic_get_rxnfc,
605 .get_tunable = enic_get_tunable,
606 .set_tunable = enic_set_tunable,
607 .get_rxfh_key_size = enic_get_rxfh_key_size,
608 .get_rxfh = enic_get_rxfh,
609 .set_rxfh = enic_set_rxfh,
610 .get_link_ksettings = enic_get_ksettings,
611 .get_ts_info = enic_get_ts_info,
614 void enic_set_ethtool_ops(struct net_device *netdev)
616 netdev->ethtool_ops = &enic_ethtool_ops;