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
;