1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
27 /* ethtool support for i40evf */
30 #include <linux/uaccess.h>
33 char stat_string[ETH_GSTRING_LEN];
37 #define I40EVF_STAT(_name, _stat) { \
38 .stat_string = _name, \
39 .stat_offset = offsetof(struct i40evf_adapter, _stat) \
42 /* All stats are u64, so we don't need to track the size of the field. */
43 static const struct i40evf_stats i40evf_gstrings_stats[] = {
44 I40EVF_STAT("rx_bytes", current_stats.rx_bytes),
45 I40EVF_STAT("rx_unicast", current_stats.rx_unicast),
46 I40EVF_STAT("rx_multicast", current_stats.rx_multicast),
47 I40EVF_STAT("rx_broadcast", current_stats.rx_broadcast),
48 I40EVF_STAT("rx_discards", current_stats.rx_discards),
49 I40EVF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
50 I40EVF_STAT("tx_bytes", current_stats.tx_bytes),
51 I40EVF_STAT("tx_unicast", current_stats.tx_unicast),
52 I40EVF_STAT("tx_multicast", current_stats.tx_multicast),
53 I40EVF_STAT("tx_broadcast", current_stats.tx_broadcast),
54 I40EVF_STAT("tx_discards", current_stats.tx_discards),
55 I40EVF_STAT("tx_errors", current_stats.tx_errors),
58 #define I40EVF_GLOBAL_STATS_LEN ARRAY_SIZE(i40evf_gstrings_stats)
59 #define I40EVF_QUEUE_STATS_LEN(_dev) \
60 (((struct i40evf_adapter *)\
61 netdev_priv(_dev))->num_active_queues \
62 * 2 * (sizeof(struct i40e_queue_stats) / sizeof(u64)))
63 #define I40EVF_STATS_LEN(_dev) \
64 (I40EVF_GLOBAL_STATS_LEN + I40EVF_QUEUE_STATS_LEN(_dev))
67 * i40evf_get_settings - Get Link Speed and Duplex settings
68 * @netdev: network interface device structure
69 * @ecmd: ethtool command
71 * Reports speed/duplex settings. Because this is a VF, we don't know what
72 * kind of link we really have, so we fake it.
74 static int i40evf_get_settings(struct net_device *netdev,
75 struct ethtool_cmd *ecmd)
77 struct i40evf_adapter *adapter = netdev_priv(netdev);
80 ecmd->autoneg = AUTONEG_DISABLE;
81 ecmd->transceiver = XCVR_DUMMY1;
82 ecmd->port = PORT_NONE;
83 /* Set speed and duplex */
84 switch (adapter->link_speed) {
85 case I40E_LINK_SPEED_40GB:
86 ethtool_cmd_speed_set(ecmd, SPEED_40000);
88 case I40E_LINK_SPEED_20GB:
89 ethtool_cmd_speed_set(ecmd, SPEED_20000);
91 case I40E_LINK_SPEED_10GB:
92 ethtool_cmd_speed_set(ecmd, SPEED_10000);
94 case I40E_LINK_SPEED_1GB:
95 ethtool_cmd_speed_set(ecmd, SPEED_1000);
97 case I40E_LINK_SPEED_100MB:
98 ethtool_cmd_speed_set(ecmd, SPEED_100);
103 ecmd->duplex = DUPLEX_FULL;
109 * i40evf_get_sset_count - Get length of string set
110 * @netdev: network interface device structure
111 * @sset: id of string set
113 * Reports size of string table. This driver only supports
114 * strings for statistics.
116 static int i40evf_get_sset_count(struct net_device *netdev, int sset)
118 if (sset == ETH_SS_STATS)
119 return I40EVF_STATS_LEN(netdev);
125 * i40evf_get_ethtool_stats - report device statistics
126 * @netdev: network interface device structure
127 * @stats: ethtool statistics structure
128 * @data: pointer to data buffer
130 * All statistics are added to the data buffer as an array of u64.
132 static void i40evf_get_ethtool_stats(struct net_device *netdev,
133 struct ethtool_stats *stats, u64 *data)
135 struct i40evf_adapter *adapter = netdev_priv(netdev);
139 for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
140 p = (char *)adapter + i40evf_gstrings_stats[i].stat_offset;
143 for (j = 0; j < adapter->num_active_queues; j++) {
144 data[i++] = adapter->tx_rings[j].stats.packets;
145 data[i++] = adapter->tx_rings[j].stats.bytes;
147 for (j = 0; j < adapter->num_active_queues; j++) {
148 data[i++] = adapter->rx_rings[j].stats.packets;
149 data[i++] = adapter->rx_rings[j].stats.bytes;
154 * i40evf_get_strings - Get string set
155 * @netdev: network interface device structure
156 * @sset: id of string set
157 * @data: buffer for string data
159 * Builds stats string table.
161 static void i40evf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
163 struct i40evf_adapter *adapter = netdev_priv(netdev);
167 if (sset == ETH_SS_STATS) {
168 for (i = 0; i < I40EVF_GLOBAL_STATS_LEN; i++) {
169 memcpy(p, i40evf_gstrings_stats[i].stat_string,
171 p += ETH_GSTRING_LEN;
173 for (i = 0; i < adapter->num_active_queues; i++) {
174 snprintf(p, ETH_GSTRING_LEN, "tx-%u.packets", i);
175 p += ETH_GSTRING_LEN;
176 snprintf(p, ETH_GSTRING_LEN, "tx-%u.bytes", i);
177 p += ETH_GSTRING_LEN;
179 for (i = 0; i < adapter->num_active_queues; i++) {
180 snprintf(p, ETH_GSTRING_LEN, "rx-%u.packets", i);
181 p += ETH_GSTRING_LEN;
182 snprintf(p, ETH_GSTRING_LEN, "rx-%u.bytes", i);
183 p += ETH_GSTRING_LEN;
189 * i40evf_get_msglevel - Get debug message level
190 * @netdev: network interface device structure
192 * Returns current debug message level.
194 static u32 i40evf_get_msglevel(struct net_device *netdev)
196 struct i40evf_adapter *adapter = netdev_priv(netdev);
198 return adapter->msg_enable;
202 * i40evf_set_msglevel - Set debug message level
203 * @netdev: network interface device structure
204 * @data: message level
206 * Set current debug message level. Higher values cause the driver to
209 static void i40evf_set_msglevel(struct net_device *netdev, u32 data)
211 struct i40evf_adapter *adapter = netdev_priv(netdev);
213 if (I40E_DEBUG_USER & data)
214 adapter->hw.debug_mask = data;
215 adapter->msg_enable = data;
219 * i40evf_get_drvinfo - Get driver info
220 * @netdev: network interface device structure
221 * @drvinfo: ethool driver info structure
223 * Returns information about the driver and device for display to the user.
225 static void i40evf_get_drvinfo(struct net_device *netdev,
226 struct ethtool_drvinfo *drvinfo)
228 struct i40evf_adapter *adapter = netdev_priv(netdev);
230 strlcpy(drvinfo->driver, i40evf_driver_name, 32);
231 strlcpy(drvinfo->version, i40evf_driver_version, 32);
232 strlcpy(drvinfo->fw_version, "N/A", 4);
233 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
237 * i40evf_get_ringparam - Get ring parameters
238 * @netdev: network interface device structure
239 * @ring: ethtool ringparam structure
241 * Returns current ring parameters. TX and RX rings are reported separately,
242 * but the number of rings is not reported.
244 static void i40evf_get_ringparam(struct net_device *netdev,
245 struct ethtool_ringparam *ring)
247 struct i40evf_adapter *adapter = netdev_priv(netdev);
249 ring->rx_max_pending = I40EVF_MAX_RXD;
250 ring->tx_max_pending = I40EVF_MAX_TXD;
251 ring->rx_pending = adapter->rx_desc_count;
252 ring->tx_pending = adapter->tx_desc_count;
256 * i40evf_set_ringparam - Set ring parameters
257 * @netdev: network interface device structure
258 * @ring: ethtool ringparam structure
260 * Sets ring parameters. TX and RX rings are controlled separately, but the
261 * number of rings is not specified, so all rings get the same settings.
263 static int i40evf_set_ringparam(struct net_device *netdev,
264 struct ethtool_ringparam *ring)
266 struct i40evf_adapter *adapter = netdev_priv(netdev);
267 u32 new_rx_count, new_tx_count;
269 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
272 new_tx_count = clamp_t(u32, ring->tx_pending,
275 new_tx_count = ALIGN(new_tx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
277 new_rx_count = clamp_t(u32, ring->rx_pending,
280 new_rx_count = ALIGN(new_rx_count, I40EVF_REQ_DESCRIPTOR_MULTIPLE);
282 /* if nothing to do return success */
283 if ((new_tx_count == adapter->tx_desc_count) &&
284 (new_rx_count == adapter->rx_desc_count))
287 adapter->tx_desc_count = new_tx_count;
288 adapter->rx_desc_count = new_rx_count;
290 if (netif_running(netdev)) {
291 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
292 schedule_work(&adapter->reset_task);
299 * i40evf_get_coalesce - Get interrupt coalescing settings
300 * @netdev: network interface device structure
301 * @ec: ethtool coalesce structure
303 * Returns current coalescing settings. This is referred to elsewhere in the
304 * driver as Interrupt Throttle Rate, as this is how the hardware describes
305 * this functionality.
307 static int i40evf_get_coalesce(struct net_device *netdev,
308 struct ethtool_coalesce *ec)
310 struct i40evf_adapter *adapter = netdev_priv(netdev);
311 struct i40e_vsi *vsi = &adapter->vsi;
313 ec->tx_max_coalesced_frames = vsi->work_limit;
314 ec->rx_max_coalesced_frames = vsi->work_limit;
316 if (ITR_IS_DYNAMIC(vsi->rx_itr_setting))
317 ec->use_adaptive_rx_coalesce = 1;
319 if (ITR_IS_DYNAMIC(vsi->tx_itr_setting))
320 ec->use_adaptive_tx_coalesce = 1;
322 ec->rx_coalesce_usecs = vsi->rx_itr_setting & ~I40E_ITR_DYNAMIC;
323 ec->tx_coalesce_usecs = vsi->tx_itr_setting & ~I40E_ITR_DYNAMIC;
329 * i40evf_set_coalesce - Set interrupt coalescing settings
330 * @netdev: network interface device structure
331 * @ec: ethtool coalesce structure
333 * Change current coalescing settings.
335 static int i40evf_set_coalesce(struct net_device *netdev,
336 struct ethtool_coalesce *ec)
338 struct i40evf_adapter *adapter = netdev_priv(netdev);
339 struct i40e_hw *hw = &adapter->hw;
340 struct i40e_vsi *vsi = &adapter->vsi;
341 struct i40e_q_vector *q_vector;
344 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
345 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
347 if ((ec->rx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
348 (ec->rx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
349 vsi->rx_itr_setting = ec->rx_coalesce_usecs;
354 if ((ec->tx_coalesce_usecs >= (I40E_MIN_ITR << 1)) &&
355 (ec->tx_coalesce_usecs <= (I40E_MAX_ITR << 1)))
356 vsi->tx_itr_setting = ec->tx_coalesce_usecs;
357 else if (ec->use_adaptive_tx_coalesce)
358 vsi->tx_itr_setting = (I40E_ITR_DYNAMIC |
359 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
363 if (ec->use_adaptive_rx_coalesce)
364 vsi->rx_itr_setting |= I40E_ITR_DYNAMIC;
366 vsi->rx_itr_setting &= ~I40E_ITR_DYNAMIC;
368 if (ec->use_adaptive_tx_coalesce)
369 vsi->tx_itr_setting |= I40E_ITR_DYNAMIC;
371 vsi->tx_itr_setting &= ~I40E_ITR_DYNAMIC;
373 for (i = 0; i < adapter->num_msix_vectors - NONQ_VECS; i++) {
374 q_vector = &adapter->q_vectors[i];
375 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
376 wr32(hw, I40E_VFINT_ITRN1(0, i), q_vector->rx.itr);
377 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
378 wr32(hw, I40E_VFINT_ITRN1(1, i), q_vector->tx.itr);
386 * i40evf_get_rxnfc - command to get RX flow classification rules
387 * @netdev: network interface device structure
388 * @cmd: ethtool rxnfc command
390 * Returns Success if the command is supported.
392 static int i40evf_get_rxnfc(struct net_device *netdev,
393 struct ethtool_rxnfc *cmd,
396 struct i40evf_adapter *adapter = netdev_priv(netdev);
397 int ret = -EOPNOTSUPP;
400 case ETHTOOL_GRXRINGS:
401 cmd->data = adapter->num_active_queues;
406 "RSS hash info is not available to vf, use pf.\n");
415 * i40evf_get_channels: get the number of channels supported by the device
416 * @netdev: network interface device structure
417 * @ch: channel information structure
419 * For the purposes of our device, we only use combined channels, i.e. a tx/rx
420 * queue pair. Report one extra channel to match our "other" MSI-X vector.
422 static void i40evf_get_channels(struct net_device *netdev,
423 struct ethtool_channels *ch)
425 struct i40evf_adapter *adapter = netdev_priv(netdev);
427 /* Report maximum channels */
428 ch->max_combined = adapter->num_active_queues;
430 ch->max_other = NONQ_VECS;
431 ch->other_count = NONQ_VECS;
433 ch->combined_count = adapter->num_active_queues;
437 * i40evf_get_rxfh_key_size - get the RSS hash key size
438 * @netdev: network interface device structure
440 * Returns the table size.
442 static u32 i40evf_get_rxfh_key_size(struct net_device *netdev)
444 struct i40evf_adapter *adapter = netdev_priv(netdev);
446 return adapter->rss_key_size;
450 * i40evf_get_rxfh_indir_size - get the rx flow hash indirection table size
451 * @netdev: network interface device structure
453 * Returns the table size.
455 static u32 i40evf_get_rxfh_indir_size(struct net_device *netdev)
457 struct i40evf_adapter *adapter = netdev_priv(netdev);
459 return adapter->rss_lut_size;
463 * i40evf_get_rxfh - get the rx flow hash indirection table
464 * @netdev: network interface device structure
465 * @indir: indirection table
468 * Reads the indirection table directly from the hardware. Always returns 0.
470 static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
473 struct i40evf_adapter *adapter = netdev_priv(netdev);
477 *hfunc = ETH_RSS_HASH_TOP;
481 memcpy(key, adapter->rss_key, adapter->rss_key_size);
483 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
484 for (i = 0; i < adapter->rss_lut_size; i++)
485 indir[i] = (u32)adapter->rss_lut[i];
491 * i40evf_set_rxfh - set the rx flow hash indirection table
492 * @netdev: network interface device structure
493 * @indir: indirection table
496 * Returns -EINVAL if the table specifies an inavlid queue id, otherwise
497 * returns 0 after programming the table.
499 static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
500 const u8 *key, const u8 hfunc)
502 struct i40evf_adapter *adapter = netdev_priv(netdev);
505 /* We do not allow change in unsupported parameters */
507 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
513 memcpy(adapter->rss_key, key, adapter->rss_key_size);
516 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
517 for (i = 0; i < adapter->rss_lut_size; i++)
518 adapter->rss_lut[i] = (u8)(indir[i]);
520 return i40evf_config_rss(adapter);
523 static const struct ethtool_ops i40evf_ethtool_ops = {
524 .get_settings = i40evf_get_settings,
525 .get_drvinfo = i40evf_get_drvinfo,
526 .get_link = ethtool_op_get_link,
527 .get_ringparam = i40evf_get_ringparam,
528 .set_ringparam = i40evf_set_ringparam,
529 .get_strings = i40evf_get_strings,
530 .get_ethtool_stats = i40evf_get_ethtool_stats,
531 .get_sset_count = i40evf_get_sset_count,
532 .get_msglevel = i40evf_get_msglevel,
533 .set_msglevel = i40evf_set_msglevel,
534 .get_coalesce = i40evf_get_coalesce,
535 .set_coalesce = i40evf_set_coalesce,
536 .get_rxnfc = i40evf_get_rxnfc,
537 .get_rxfh_indir_size = i40evf_get_rxfh_indir_size,
538 .get_rxfh = i40evf_get_rxfh,
539 .set_rxfh = i40evf_set_rxfh,
540 .get_channels = i40evf_get_channels,
541 .get_rxfh_key_size = i40evf_get_rxfh_key_size,
545 * i40evf_set_ethtool_ops - Initialize ethtool ops struct
546 * @netdev: network interface device structure
548 * Sets ethtool ops struct in our netdev so that ethtool can call
551 void i40evf_set_ethtool_ops(struct net_device *netdev)
553 netdev->ethtool_ops = &i40evf_ethtool_ops;