1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * ethtool.h: Defines for Linux ethtool.
4 *
5 * Copyright (C) 1998 David S. Miller (davem@redhat.com)
6 * Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
7 * Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
8 * Portions Copyright 2002 Intel (eli.kupermann@intel.com,
9 * christopher.leech@intel.com,
10 * scott.feldman@intel.com)
11 * Portions Copyright (C) Sun Microsystems 2008
12 */
13 #ifndef _LINUX_ETHTOOL_H
14 #define _LINUX_ETHTOOL_H
15
16 #include <linux/bitmap.h>
17 #include <linux/compat.h>
18 #include <linux/if_ether.h>
19 #include <linux/netlink.h>
20 #include <uapi/linux/ethtool.h>
21
22 struct compat_ethtool_rx_flow_spec {
23 u32 flow_type;
24 union ethtool_flow_union h_u;
25 struct ethtool_flow_ext h_ext;
26 union ethtool_flow_union m_u;
27 struct ethtool_flow_ext m_ext;
28 compat_u64 ring_cookie;
29 u32 location;
30 };
31
32 struct compat_ethtool_rxnfc {
33 u32 cmd;
34 u32 flow_type;
35 compat_u64 data;
36 struct compat_ethtool_rx_flow_spec fs;
37 u32 rule_cnt;
38 u32 rule_locs[];
39 };
40
41 #include <linux/rculist.h>
42
43 /**
44 * enum ethtool_phys_id_state - indicator state for physical identification
45 * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
46 * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
47 * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
48 * is not supported)
49 * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
50 * is not supported)
51 */
52 enum ethtool_phys_id_state {
53 ETHTOOL_ID_INACTIVE,
54 ETHTOOL_ID_ACTIVE,
55 ETHTOOL_ID_ON,
56 ETHTOOL_ID_OFF
57 };
58
59 enum {
60 ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
61 ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
62 ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
63
64 /*
65 * Add your fresh new hash function bits above and remember to update
66 * rss_hash_func_strings[] in ethtool.c
67 */
68 ETH_RSS_HASH_FUNCS_COUNT
69 };
70
71 /**
72 * struct kernel_ethtool_ringparam - RX/TX ring configuration
73 * @rx_buf_len: Current length of buffers on the rx ring.
74 * @tcp_data_split: Scatter packet headers and data to separate buffers
75 * @tx_push: The flag of tx push mode
76 * @rx_push: The flag of rx push mode
77 * @cqe_size: Size of TX/RX completion queue event
78 * @tx_push_buf_len: Size of TX push buffer
79 * @tx_push_buf_max_len: Maximum allowed size of TX push buffer
80 */
81 struct kernel_ethtool_ringparam {
82 u32 rx_buf_len;
83 u8 tcp_data_split;
84 u8 tx_push;
85 u8 rx_push;
86 u32 cqe_size;
87 u32 tx_push_buf_len;
88 u32 tx_push_buf_max_len;
89 };
90
91 /**
92 * enum ethtool_supported_ring_param - indicator caps for setting ring params
93 * @ETHTOOL_RING_USE_RX_BUF_LEN: capture for setting rx_buf_len
94 * @ETHTOOL_RING_USE_CQE_SIZE: capture for setting cqe_size
95 * @ETHTOOL_RING_USE_TX_PUSH: capture for setting tx_push
96 * @ETHTOOL_RING_USE_RX_PUSH: capture for setting rx_push
97 * @ETHTOOL_RING_USE_TX_PUSH_BUF_LEN: capture for setting tx_push_buf_len
98 */
99 enum ethtool_supported_ring_param {
100 ETHTOOL_RING_USE_RX_BUF_LEN = BIT(0),
101 ETHTOOL_RING_USE_CQE_SIZE = BIT(1),
102 ETHTOOL_RING_USE_TX_PUSH = BIT(2),
103 ETHTOOL_RING_USE_RX_PUSH = BIT(3),
104 ETHTOOL_RING_USE_TX_PUSH_BUF_LEN = BIT(4),
105 };
106
107 #define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
108 #define __ETH_RSS_HASH(name) __ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
109
110 #define ETH_RSS_HASH_TOP __ETH_RSS_HASH(TOP)
111 #define ETH_RSS_HASH_XOR __ETH_RSS_HASH(XOR)
112 #define ETH_RSS_HASH_CRC32 __ETH_RSS_HASH(CRC32)
113
114 #define ETH_RSS_HASH_UNKNOWN 0
115 #define ETH_RSS_HASH_NO_CHANGE 0
116
117 struct net_device;
118 struct netlink_ext_ack;
119
120 /* Link extended state and substate. */
121 struct ethtool_link_ext_state_info {
122 enum ethtool_link_ext_state link_ext_state;
123 union {
124 enum ethtool_link_ext_substate_autoneg autoneg;
125 enum ethtool_link_ext_substate_link_training link_training;
126 enum ethtool_link_ext_substate_link_logical_mismatch link_logical_mismatch;
127 enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
128 enum ethtool_link_ext_substate_cable_issue cable_issue;
129 enum ethtool_link_ext_substate_module module;
130 u32 __link_ext_substate;
131 };
132 };
133
134 struct ethtool_link_ext_stats {
135 /* Custom Linux statistic for PHY level link down events.
136 * In a simpler world it should be equal to netdev->carrier_down_count
137 * unfortunately netdev also counts local reconfigurations which don't
138 * actually take the physical link down, not to mention NC-SI which,
139 * if present, keeps the link up regardless of host state.
140 * This statistic counts when PHY _actually_ went down, or lost link.
141 *
142 * Note that we need u64 for ethtool_stats_init() and comparisons
143 * to ETHTOOL_STAT_NOT_SET, but only u32 is exposed to the user.
144 */
145 u64 link_down_events;
146 };
147
148 /**
149 * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
150 * @index: Index in RX flow hash indirection table
151 * @n_rx_rings: Number of RX rings to use
152 *
153 * This function provides the default policy for RX flow hash indirection.
154 */
ethtool_rxfh_indir_default(u32 index,u32 n_rx_rings)155 static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
156 {
157 return index % n_rx_rings;
158 }
159
160 /* declare a link mode bitmap */
161 #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name) \
162 DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
163
164 /* drivers must ignore base.cmd and base.link_mode_masks_nwords
165 * fields, but they are allowed to overwrite them (will be ignored).
166 */
167 struct ethtool_link_ksettings {
168 struct ethtool_link_settings base;
169 struct {
170 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
171 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
172 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
173 } link_modes;
174 u32 lanes;
175 };
176
177 /**
178 * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
179 * @ptr : pointer to struct ethtool_link_ksettings
180 * @name : one of supported/advertising/lp_advertising
181 */
182 #define ethtool_link_ksettings_zero_link_mode(ptr, name) \
183 bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
184
185 /**
186 * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
187 * link mode mask
188 * @ptr : pointer to struct ethtool_link_ksettings
189 * @name : one of supported/advertising/lp_advertising
190 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
191 * (not atomic, no bound checking)
192 */
193 #define ethtool_link_ksettings_add_link_mode(ptr, name, mode) \
194 __set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
195
196 /**
197 * ethtool_link_ksettings_del_link_mode - clear bit in link_ksettings
198 * link mode mask
199 * @ptr : pointer to struct ethtool_link_ksettings
200 * @name : one of supported/advertising/lp_advertising
201 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
202 * (not atomic, no bound checking)
203 */
204 #define ethtool_link_ksettings_del_link_mode(ptr, name, mode) \
205 __clear_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
206
207 /**
208 * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
209 * @ptr : pointer to struct ethtool_link_ksettings
210 * @name : one of supported/advertising/lp_advertising
211 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
212 * (not atomic, no bound checking)
213 *
214 * Returns true/false.
215 */
216 #define ethtool_link_ksettings_test_link_mode(ptr, name, mode) \
217 test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
218
219 extern int
220 __ethtool_get_link_ksettings(struct net_device *dev,
221 struct ethtool_link_ksettings *link_ksettings);
222
223 struct kernel_ethtool_coalesce {
224 u8 use_cqe_mode_tx;
225 u8 use_cqe_mode_rx;
226 u32 tx_aggr_max_bytes;
227 u32 tx_aggr_max_frames;
228 u32 tx_aggr_time_usecs;
229 };
230
231 /**
232 * ethtool_intersect_link_masks - Given two link masks, AND them together
233 * @dst: first mask and where result is stored
234 * @src: second mask to intersect with
235 *
236 * Given two link mode masks, AND them together and save the result in dst.
237 */
238 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
239 struct ethtool_link_ksettings *src);
240
241 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
242 u32 legacy_u32);
243
244 /* return false if src had higher bits set. lower bits always updated. */
245 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
246 const unsigned long *src);
247
248 #define ETHTOOL_COALESCE_RX_USECS BIT(0)
249 #define ETHTOOL_COALESCE_RX_MAX_FRAMES BIT(1)
250 #define ETHTOOL_COALESCE_RX_USECS_IRQ BIT(2)
251 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ BIT(3)
252 #define ETHTOOL_COALESCE_TX_USECS BIT(4)
253 #define ETHTOOL_COALESCE_TX_MAX_FRAMES BIT(5)
254 #define ETHTOOL_COALESCE_TX_USECS_IRQ BIT(6)
255 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ BIT(7)
256 #define ETHTOOL_COALESCE_STATS_BLOCK_USECS BIT(8)
257 #define ETHTOOL_COALESCE_USE_ADAPTIVE_RX BIT(9)
258 #define ETHTOOL_COALESCE_USE_ADAPTIVE_TX BIT(10)
259 #define ETHTOOL_COALESCE_PKT_RATE_LOW BIT(11)
260 #define ETHTOOL_COALESCE_RX_USECS_LOW BIT(12)
261 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW BIT(13)
262 #define ETHTOOL_COALESCE_TX_USECS_LOW BIT(14)
263 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW BIT(15)
264 #define ETHTOOL_COALESCE_PKT_RATE_HIGH BIT(16)
265 #define ETHTOOL_COALESCE_RX_USECS_HIGH BIT(17)
266 #define ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH BIT(18)
267 #define ETHTOOL_COALESCE_TX_USECS_HIGH BIT(19)
268 #define ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH BIT(20)
269 #define ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL BIT(21)
270 #define ETHTOOL_COALESCE_USE_CQE_RX BIT(22)
271 #define ETHTOOL_COALESCE_USE_CQE_TX BIT(23)
272 #define ETHTOOL_COALESCE_TX_AGGR_MAX_BYTES BIT(24)
273 #define ETHTOOL_COALESCE_TX_AGGR_MAX_FRAMES BIT(25)
274 #define ETHTOOL_COALESCE_TX_AGGR_TIME_USECS BIT(26)
275 #define ETHTOOL_COALESCE_ALL_PARAMS GENMASK(26, 0)
276
277 #define ETHTOOL_COALESCE_USECS \
278 (ETHTOOL_COALESCE_RX_USECS | ETHTOOL_COALESCE_TX_USECS)
279 #define ETHTOOL_COALESCE_MAX_FRAMES \
280 (ETHTOOL_COALESCE_RX_MAX_FRAMES | ETHTOOL_COALESCE_TX_MAX_FRAMES)
281 #define ETHTOOL_COALESCE_USECS_IRQ \
282 (ETHTOOL_COALESCE_RX_USECS_IRQ | ETHTOOL_COALESCE_TX_USECS_IRQ)
283 #define ETHTOOL_COALESCE_MAX_FRAMES_IRQ \
284 (ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ | \
285 ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ)
286 #define ETHTOOL_COALESCE_USE_ADAPTIVE \
287 (ETHTOOL_COALESCE_USE_ADAPTIVE_RX | ETHTOOL_COALESCE_USE_ADAPTIVE_TX)
288 #define ETHTOOL_COALESCE_USECS_LOW_HIGH \
289 (ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_TX_USECS_LOW | \
290 ETHTOOL_COALESCE_RX_USECS_HIGH | ETHTOOL_COALESCE_TX_USECS_HIGH)
291 #define ETHTOOL_COALESCE_MAX_FRAMES_LOW_HIGH \
292 (ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW | \
293 ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW | \
294 ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH | \
295 ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH)
296 #define ETHTOOL_COALESCE_PKT_RATE_RX_USECS \
297 (ETHTOOL_COALESCE_USE_ADAPTIVE_RX | \
298 ETHTOOL_COALESCE_RX_USECS_LOW | ETHTOOL_COALESCE_RX_USECS_HIGH | \
299 ETHTOOL_COALESCE_PKT_RATE_LOW | ETHTOOL_COALESCE_PKT_RATE_HIGH | \
300 ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL)
301 #define ETHTOOL_COALESCE_USE_CQE \
302 (ETHTOOL_COALESCE_USE_CQE_RX | ETHTOOL_COALESCE_USE_CQE_TX)
303 #define ETHTOOL_COALESCE_TX_AGGR \
304 (ETHTOOL_COALESCE_TX_AGGR_MAX_BYTES | \
305 ETHTOOL_COALESCE_TX_AGGR_MAX_FRAMES | \
306 ETHTOOL_COALESCE_TX_AGGR_TIME_USECS)
307
308 #define ETHTOOL_STAT_NOT_SET (~0ULL)
309
ethtool_stats_init(u64 * stats,unsigned int n)310 static inline void ethtool_stats_init(u64 *stats, unsigned int n)
311 {
312 while (n--)
313 stats[n] = ETHTOOL_STAT_NOT_SET;
314 }
315
316 /* Basic IEEE 802.3 MAC statistics (30.3.1.1.*), not otherwise exposed
317 * via a more targeted API.
318 */
319 struct ethtool_eth_mac_stats {
320 enum ethtool_mac_stats_src src;
321 struct_group(stats,
322 u64 FramesTransmittedOK;
323 u64 SingleCollisionFrames;
324 u64 MultipleCollisionFrames;
325 u64 FramesReceivedOK;
326 u64 FrameCheckSequenceErrors;
327 u64 AlignmentErrors;
328 u64 OctetsTransmittedOK;
329 u64 FramesWithDeferredXmissions;
330 u64 LateCollisions;
331 u64 FramesAbortedDueToXSColls;
332 u64 FramesLostDueToIntMACXmitError;
333 u64 CarrierSenseErrors;
334 u64 OctetsReceivedOK;
335 u64 FramesLostDueToIntMACRcvError;
336 u64 MulticastFramesXmittedOK;
337 u64 BroadcastFramesXmittedOK;
338 u64 FramesWithExcessiveDeferral;
339 u64 MulticastFramesReceivedOK;
340 u64 BroadcastFramesReceivedOK;
341 u64 InRangeLengthErrors;
342 u64 OutOfRangeLengthField;
343 u64 FrameTooLongErrors;
344 );
345 };
346
347 /* Basic IEEE 802.3 PHY statistics (30.3.2.1.*), not otherwise exposed
348 * via a more targeted API.
349 */
350 struct ethtool_eth_phy_stats {
351 enum ethtool_mac_stats_src src;
352 struct_group(stats,
353 u64 SymbolErrorDuringCarrier;
354 );
355 };
356
357 /* Basic IEEE 802.3 MAC Ctrl statistics (30.3.3.*), not otherwise exposed
358 * via a more targeted API.
359 */
360 struct ethtool_eth_ctrl_stats {
361 enum ethtool_mac_stats_src src;
362 struct_group(stats,
363 u64 MACControlFramesTransmitted;
364 u64 MACControlFramesReceived;
365 u64 UnsupportedOpcodesReceived;
366 );
367 };
368
369 /**
370 * struct ethtool_pause_stats - statistics for IEEE 802.3x pause frames
371 * @src: input field denoting whether stats should be queried from the eMAC or
372 * pMAC (if the MM layer is supported). To be ignored otherwise.
373 * @tx_pause_frames: transmitted pause frame count. Reported to user space
374 * as %ETHTOOL_A_PAUSE_STAT_TX_FRAMES.
375 *
376 * Equivalent to `30.3.4.2 aPAUSEMACCtrlFramesTransmitted`
377 * from the standard.
378 *
379 * @rx_pause_frames: received pause frame count. Reported to user space
380 * as %ETHTOOL_A_PAUSE_STAT_RX_FRAMES. Equivalent to:
381 *
382 * Equivalent to `30.3.4.3 aPAUSEMACCtrlFramesReceived`
383 * from the standard.
384 */
385 struct ethtool_pause_stats {
386 enum ethtool_mac_stats_src src;
387 struct_group(stats,
388 u64 tx_pause_frames;
389 u64 rx_pause_frames;
390 );
391 };
392
393 #define ETHTOOL_MAX_LANES 8
394
395 /**
396 * struct ethtool_fec_stats - statistics for IEEE 802.3 FEC
397 * @corrected_blocks: number of received blocks corrected by FEC
398 * Reported to user space as %ETHTOOL_A_FEC_STAT_CORRECTED.
399 *
400 * Equivalent to `30.5.1.1.17 aFECCorrectedBlocks` from the standard.
401 *
402 * @uncorrectable_blocks: number of received blocks FEC was not able to correct
403 * Reported to user space as %ETHTOOL_A_FEC_STAT_UNCORR.
404 *
405 * Equivalent to `30.5.1.1.18 aFECUncorrectableBlocks` from the standard.
406 *
407 * @corrected_bits: number of bits corrected by FEC
408 * Similar to @corrected_blocks but counts individual bit changes,
409 * not entire FEC data blocks. This is a non-standard statistic.
410 * Reported to user space as %ETHTOOL_A_FEC_STAT_CORR_BITS.
411 *
412 * @lane: per-lane/PCS-instance counts as defined by the standard
413 * @total: error counts for the entire port, for drivers incapable of reporting
414 * per-lane stats
415 *
416 * Drivers should fill in either only total or per-lane statistics, core
417 * will take care of adding lane values up to produce the total.
418 */
419 struct ethtool_fec_stats {
420 struct ethtool_fec_stat {
421 u64 total;
422 u64 lanes[ETHTOOL_MAX_LANES];
423 } corrected_blocks, uncorrectable_blocks, corrected_bits;
424 };
425
426 /**
427 * struct ethtool_rmon_hist_range - byte range for histogram statistics
428 * @low: low bound of the bucket (inclusive)
429 * @high: high bound of the bucket (inclusive)
430 */
431 struct ethtool_rmon_hist_range {
432 u16 low;
433 u16 high;
434 };
435
436 #define ETHTOOL_RMON_HIST_MAX 10
437
438 /**
439 * struct ethtool_rmon_stats - selected RMON (RFC 2819) statistics
440 * @src: input field denoting whether stats should be queried from the eMAC or
441 * pMAC (if the MM layer is supported). To be ignored otherwise.
442 * @undersize_pkts: Equivalent to `etherStatsUndersizePkts` from the RFC.
443 * @oversize_pkts: Equivalent to `etherStatsOversizePkts` from the RFC.
444 * @fragments: Equivalent to `etherStatsFragments` from the RFC.
445 * @jabbers: Equivalent to `etherStatsJabbers` from the RFC.
446 * @hist: Packet counter for packet length buckets (e.g.
447 * `etherStatsPkts128to255Octets` from the RFC).
448 * @hist_tx: Tx counters in similar form to @hist, not defined in the RFC.
449 *
450 * Selection of RMON (RFC 2819) statistics which are not exposed via different
451 * APIs, primarily the packet-length-based counters.
452 * Unfortunately different designs choose different buckets beyond
453 * the 1024B mark (jumbo frame teritory), so the definition of the bucket
454 * ranges is left to the driver.
455 */
456 struct ethtool_rmon_stats {
457 enum ethtool_mac_stats_src src;
458 struct_group(stats,
459 u64 undersize_pkts;
460 u64 oversize_pkts;
461 u64 fragments;
462 u64 jabbers;
463
464 u64 hist[ETHTOOL_RMON_HIST_MAX];
465 u64 hist_tx[ETHTOOL_RMON_HIST_MAX];
466 );
467 };
468
469 #define ETH_MODULE_EEPROM_PAGE_LEN 128
470 #define ETH_MODULE_MAX_I2C_ADDRESS 0x7f
471
472 /**
473 * struct ethtool_module_eeprom - EEPROM dump from specified page
474 * @offset: Offset within the specified EEPROM page to begin read, in bytes.
475 * @length: Number of bytes to read.
476 * @page: Page number to read from.
477 * @bank: Page bank number to read from, if applicable by EEPROM spec.
478 * @i2c_address: I2C address of a page. Value less than 0x7f expected. Most
479 * EEPROMs use 0x50 or 0x51.
480 * @data: Pointer to buffer with EEPROM data of @length size.
481 *
482 * This can be used to manage pages during EEPROM dump in ethtool and pass
483 * required information to the driver.
484 */
485 struct ethtool_module_eeprom {
486 u32 offset;
487 u32 length;
488 u8 page;
489 u8 bank;
490 u8 i2c_address;
491 u8 *data;
492 };
493
494 /**
495 * struct ethtool_module_power_mode_params - module power mode parameters
496 * @policy: The power mode policy enforced by the host for the plug-in module.
497 * @mode: The operational power mode of the plug-in module. Should be filled by
498 * device drivers on get operations.
499 */
500 struct ethtool_module_power_mode_params {
501 enum ethtool_module_power_mode_policy policy;
502 enum ethtool_module_power_mode mode;
503 };
504
505 /**
506 * struct ethtool_mm_state - 802.3 MAC merge layer state
507 * @verify_time:
508 * wait time between verification attempts in ms (according to clause
509 * 30.14.1.6 aMACMergeVerifyTime)
510 * @max_verify_time:
511 * maximum accepted value for the @verify_time variable in set requests
512 * @verify_status:
513 * state of the verification state machine of the MM layer (according to
514 * clause 30.14.1.2 aMACMergeStatusVerify)
515 * @tx_enabled:
516 * set if the MM layer is administratively enabled in the TX direction
517 * (according to clause 30.14.1.3 aMACMergeEnableTx)
518 * @tx_active:
519 * set if the MM layer is enabled in the TX direction, which makes FP
520 * possible (according to 30.14.1.5 aMACMergeStatusTx). This should be
521 * true if MM is enabled, and the verification status is either verified,
522 * or disabled.
523 * @pmac_enabled:
524 * set if the preemptible MAC is powered on and is able to receive
525 * preemptible packets and respond to verification frames.
526 * @verify_enabled:
527 * set if the Verify function of the MM layer (which sends SMD-V
528 * verification requests) is administratively enabled (regardless of
529 * whether it is currently in the ETHTOOL_MM_VERIFY_STATUS_DISABLED state
530 * or not), according to clause 30.14.1.4 aMACMergeVerifyDisableTx (but
531 * using positive rather than negative logic). The device should always
532 * respond to received SMD-V requests as long as @pmac_enabled is set.
533 * @tx_min_frag_size:
534 * the minimum size of non-final mPacket fragments that the link partner
535 * supports receiving, expressed in octets. Compared to the definition
536 * from clause 30.14.1.7 aMACMergeAddFragSize which is expressed in the
537 * range 0 to 3 (requiring a translation to the size in octets according
538 * to the formula 64 * (1 + addFragSize) - 4), a value in a continuous and
539 * unbounded range can be specified here.
540 * @rx_min_frag_size:
541 * the minimum size of non-final mPacket fragments that this device
542 * supports receiving, expressed in octets.
543 */
544 struct ethtool_mm_state {
545 u32 verify_time;
546 u32 max_verify_time;
547 enum ethtool_mm_verify_status verify_status;
548 bool tx_enabled;
549 bool tx_active;
550 bool pmac_enabled;
551 bool verify_enabled;
552 u32 tx_min_frag_size;
553 u32 rx_min_frag_size;
554 };
555
556 /**
557 * struct ethtool_mm_cfg - 802.3 MAC merge layer configuration
558 * @verify_time: see struct ethtool_mm_state
559 * @verify_enabled: see struct ethtool_mm_state
560 * @tx_enabled: see struct ethtool_mm_state
561 * @pmac_enabled: see struct ethtool_mm_state
562 * @tx_min_frag_size: see struct ethtool_mm_state
563 */
564 struct ethtool_mm_cfg {
565 u32 verify_time;
566 bool verify_enabled;
567 bool tx_enabled;
568 bool pmac_enabled;
569 u32 tx_min_frag_size;
570 };
571
572 /**
573 * struct ethtool_mm_stats - 802.3 MAC merge layer statistics
574 * @MACMergeFrameAssErrorCount:
575 * received MAC frames with reassembly errors
576 * @MACMergeFrameSmdErrorCount:
577 * received MAC frames/fragments rejected due to unknown or incorrect SMD
578 * @MACMergeFrameAssOkCount:
579 * received MAC frames that were successfully reassembled and passed up
580 * @MACMergeFragCountRx:
581 * number of additional correct SMD-C mPackets received due to preemption
582 * @MACMergeFragCountTx:
583 * number of additional mPackets sent due to preemption
584 * @MACMergeHoldCount:
585 * number of times the MM layer entered the HOLD state, which blocks
586 * transmission of preemptible traffic
587 */
588 struct ethtool_mm_stats {
589 u64 MACMergeFrameAssErrorCount;
590 u64 MACMergeFrameSmdErrorCount;
591 u64 MACMergeFrameAssOkCount;
592 u64 MACMergeFragCountRx;
593 u64 MACMergeFragCountTx;
594 u64 MACMergeHoldCount;
595 };
596
597 /**
598 * struct ethtool_ops - optional netdev operations
599 * @cap_link_lanes_supported: indicates if the driver supports lanes
600 * parameter.
601 * @supported_coalesce_params: supported types of interrupt coalescing.
602 * @supported_ring_params: supported ring params.
603 * @get_drvinfo: Report driver/device information. Modern drivers no
604 * longer have to implement this callback. Most fields are
605 * correctly filled in by the core using system information, or
606 * populated using other driver operations.
607 * @get_regs_len: Get buffer length required for @get_regs
608 * @get_regs: Get device registers
609 * @get_wol: Report whether Wake-on-Lan is enabled
610 * @set_wol: Turn Wake-on-Lan on or off. Returns a negative error code
611 * or zero.
612 * @get_msglevel: Report driver message level. This should be the value
613 * of the @msg_enable field used by netif logging functions.
614 * @set_msglevel: Set driver message level
615 * @nway_reset: Restart autonegotiation. Returns a negative error code
616 * or zero.
617 * @get_link: Report whether physical link is up. Will only be called if
618 * the netdev is up. Should usually be set to ethtool_op_get_link(),
619 * which uses netif_carrier_ok().
620 * @get_link_ext_state: Report link extended state. Should set link_ext_state and
621 * link_ext_substate (link_ext_substate of 0 means link_ext_substate is unknown,
622 * do not attach ext_substate attribute to netlink message). If link_ext_state
623 * and link_ext_substate are unknown, return -ENODATA. If not implemented,
624 * link_ext_state and link_ext_substate will not be sent to userspace.
625 * @get_link_ext_stats: Read extra link-related counters.
626 * @get_eeprom_len: Read range of EEPROM addresses for validation of
627 * @get_eeprom and @set_eeprom requests.
628 * Returns 0 if device does not support EEPROM access.
629 * @get_eeprom: Read data from the device EEPROM.
630 * Should fill in the magic field. Don't need to check len for zero
631 * or wraparound. Fill in the data argument with the eeprom values
632 * from offset to offset + len. Update len to the amount read.
633 * Returns an error or zero.
634 * @set_eeprom: Write data to the device EEPROM.
635 * Should validate the magic field. Don't need to check len for zero
636 * or wraparound. Update len to the amount written. Returns an error
637 * or zero.
638 * @get_coalesce: Get interrupt coalescing parameters. Returns a negative
639 * error code or zero.
640 * @set_coalesce: Set interrupt coalescing parameters. Supported coalescing
641 * types should be set in @supported_coalesce_params.
642 * Returns a negative error code or zero.
643 * @get_ringparam: Report ring sizes
644 * @set_ringparam: Set ring sizes. Returns a negative error code or zero.
645 * @get_pause_stats: Report pause frame statistics. Drivers must not zero
646 * statistics which they don't report. The stats structure is initialized
647 * to ETHTOOL_STAT_NOT_SET indicating driver does not report statistics.
648 * @get_pauseparam: Report pause parameters
649 * @set_pauseparam: Set pause parameters. Returns a negative error code
650 * or zero.
651 * @self_test: Run specified self-tests
652 * @get_strings: Return a set of strings that describe the requested objects
653 * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
654 * attached to it. The implementation may update the indicator
655 * asynchronously or synchronously, but in either case it must return
656 * quickly. It is initially called with the argument %ETHTOOL_ID_ACTIVE,
657 * and must either activate asynchronous updates and return zero, return
658 * a negative error or return a positive frequency for synchronous
659 * indication (e.g. 1 for one on/off cycle per second). If it returns
660 * a frequency then it will be called again at intervals with the
661 * argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
662 * the indicator accordingly. Finally, it is called with the argument
663 * %ETHTOOL_ID_INACTIVE and must deactivate the indicator. Returns a
664 * negative error code or zero.
665 * @get_ethtool_stats: Return extended statistics about the device.
666 * This is only useful if the device maintains statistics not
667 * included in &struct rtnl_link_stats64.
668 * @begin: Function to be called before any other operation. Returns a
669 * negative error code or zero.
670 * @complete: Function to be called after any other operation except
671 * @begin. Will be called even if the other operation failed.
672 * @get_priv_flags: Report driver-specific feature flags.
673 * @set_priv_flags: Set driver-specific feature flags. Returns a negative
674 * error code or zero.
675 * @get_sset_count: Get number of strings that @get_strings will write.
676 * @get_rxnfc: Get RX flow classification rules. Returns a negative
677 * error code or zero.
678 * @set_rxnfc: Set RX flow classification rules. Returns a negative
679 * error code or zero.
680 * @flash_device: Write a firmware image to device's flash memory.
681 * Returns a negative error code or zero.
682 * @reset: Reset (part of) the device, as specified by a bitmask of
683 * flags from &enum ethtool_reset_flags. Returns a negative
684 * error code or zero.
685 * @get_rxfh_key_size: Get the size of the RX flow hash key.
686 * Returns zero if not supported for this specific device.
687 * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
688 * Returns zero if not supported for this specific device.
689 * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
690 * and/or hash function.
691 * Returns a negative error code or zero.
692 * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
693 * key, and/or hash function. Arguments which are set to %NULL or zero
694 * will remain unchanged.
695 * Returns a negative error code or zero. An error code must be returned
696 * if at least one unsupported change was requested.
697 * @get_rxfh_context: Get the contents of the RX flow hash indirection table,
698 * hash key, and/or hash function assiciated to the given rss context.
699 * Returns a negative error code or zero.
700 * @set_rxfh_context: Create, remove and configure RSS contexts. Allows setting
701 * the contents of the RX flow hash indirection table, hash key, and/or
702 * hash function associated to the given context. Arguments which are set
703 * to %NULL or zero will remain unchanged.
704 * Returns a negative error code or zero. An error code must be returned
705 * if at least one unsupported change was requested.
706 * @get_channels: Get number of channels.
707 * @set_channels: Set number of channels. Returns a negative error code or
708 * zero.
709 * @get_dump_flag: Get dump flag indicating current dump length, version,
710 * and flag of the device.
711 * @get_dump_data: Get dump data.
712 * @set_dump: Set dump specific flags to the device.
713 * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
714 * It may be called with RCU, or rtnl or reference on the device.
715 * Drivers supporting transmit time stamps in software should set this to
716 * ethtool_op_get_ts_info().
717 * @get_module_info: Get the size and type of the eeprom contained within
718 * a plug-in module.
719 * @get_module_eeprom: Get the eeprom information from the plug-in module
720 * @get_eee: Get Energy-Efficient (EEE) supported and status.
721 * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
722 * @get_tunable: Read the value of a driver / device tunable.
723 * @set_tunable: Set the value of a driver / device tunable.
724 * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
725 * It must check that the given queue number is valid. If neither a RX nor
726 * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
727 * queue has this number, set the inapplicable fields to ~0 and return 0.
728 * Returns a negative error code or zero.
729 * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
730 * It must check that the given queue number is valid. If neither a RX nor
731 * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
732 * queue has this number, ignore the inapplicable fields. Supported
733 * coalescing types should be set in @supported_coalesce_params.
734 * Returns a negative error code or zero.
735 * @get_link_ksettings: Get various device settings including Ethernet link
736 * settings. The %cmd and %link_mode_masks_nwords fields should be
737 * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
738 * any change to them will be overwritten by kernel. Returns a negative
739 * error code or zero.
740 * @set_link_ksettings: Set various device settings including Ethernet link
741 * settings. The %cmd and %link_mode_masks_nwords fields should be
742 * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
743 * any change to them will be overwritten by kernel. Returns a negative
744 * error code or zero.
745 * @get_fec_stats: Report FEC statistics.
746 * Core will sum up per-lane stats to get the total.
747 * Drivers must not zero statistics which they don't report. The stats
748 * structure is initialized to ETHTOOL_STAT_NOT_SET indicating driver does
749 * not report statistics.
750 * @get_fecparam: Get the network device Forward Error Correction parameters.
751 * @set_fecparam: Set the network device Forward Error Correction parameters.
752 * @get_ethtool_phy_stats: Return extended statistics about the PHY device.
753 * This is only useful if the device maintains PHY statistics and
754 * cannot use the standard PHY library helpers.
755 * @get_phy_tunable: Read the value of a PHY tunable.
756 * @set_phy_tunable: Set the value of a PHY tunable.
757 * @get_module_eeprom_by_page: Get a region of plug-in module EEPROM data from
758 * specified page. Returns a negative error code or the amount of bytes
759 * read.
760 * @get_eth_phy_stats: Query some of the IEEE 802.3 PHY statistics.
761 * @get_eth_mac_stats: Query some of the IEEE 802.3 MAC statistics.
762 * @get_eth_ctrl_stats: Query some of the IEEE 802.3 MAC Ctrl statistics.
763 * @get_rmon_stats: Query some of the RMON (RFC 2819) statistics.
764 * Set %ranges to a pointer to zero-terminated array of byte ranges.
765 * @get_module_power_mode: Get the power mode policy for the plug-in module
766 * used by the network device and its operational power mode, if
767 * plugged-in.
768 * @set_module_power_mode: Set the power mode policy for the plug-in module
769 * used by the network device.
770 * @get_mm: Query the 802.3 MAC Merge layer state.
771 * @set_mm: Set the 802.3 MAC Merge layer parameters.
772 * @get_mm_stats: Query the 802.3 MAC Merge layer statistics.
773 *
774 * All operations are optional (i.e. the function pointer may be set
775 * to %NULL) and callers must take this into account. Callers must
776 * hold the RTNL lock.
777 *
778 * See the structures used by these operations for further documentation.
779 * Note that for all operations using a structure ending with a zero-
780 * length array, the array is allocated separately in the kernel and
781 * is passed to the driver as an additional parameter.
782 *
783 * See &struct net_device and &struct net_device_ops for documentation
784 * of the generic netdev features interface.
785 */
786 struct ethtool_ops {
787 u32 cap_link_lanes_supported:1;
788 u32 supported_coalesce_params;
789 u32 supported_ring_params;
790 void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
791 int (*get_regs_len)(struct net_device *);
792 void (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
793 void (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
794 int (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
795 u32 (*get_msglevel)(struct net_device *);
796 void (*set_msglevel)(struct net_device *, u32);
797 int (*nway_reset)(struct net_device *);
798 u32 (*get_link)(struct net_device *);
799 int (*get_link_ext_state)(struct net_device *,
800 struct ethtool_link_ext_state_info *);
801 void (*get_link_ext_stats)(struct net_device *dev,
802 struct ethtool_link_ext_stats *stats);
803 int (*get_eeprom_len)(struct net_device *);
804 int (*get_eeprom)(struct net_device *,
805 struct ethtool_eeprom *, u8 *);
806 int (*set_eeprom)(struct net_device *,
807 struct ethtool_eeprom *, u8 *);
808 int (*get_coalesce)(struct net_device *,
809 struct ethtool_coalesce *,
810 struct kernel_ethtool_coalesce *,
811 struct netlink_ext_ack *);
812 int (*set_coalesce)(struct net_device *,
813 struct ethtool_coalesce *,
814 struct kernel_ethtool_coalesce *,
815 struct netlink_ext_ack *);
816 void (*get_ringparam)(struct net_device *,
817 struct ethtool_ringparam *,
818 struct kernel_ethtool_ringparam *,
819 struct netlink_ext_ack *);
820 int (*set_ringparam)(struct net_device *,
821 struct ethtool_ringparam *,
822 struct kernel_ethtool_ringparam *,
823 struct netlink_ext_ack *);
824 void (*get_pause_stats)(struct net_device *dev,
825 struct ethtool_pause_stats *pause_stats);
826 void (*get_pauseparam)(struct net_device *,
827 struct ethtool_pauseparam*);
828 int (*set_pauseparam)(struct net_device *,
829 struct ethtool_pauseparam*);
830 void (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
831 void (*get_strings)(struct net_device *, u32 stringset, u8 *);
832 int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
833 void (*get_ethtool_stats)(struct net_device *,
834 struct ethtool_stats *, u64 *);
835 int (*begin)(struct net_device *);
836 void (*complete)(struct net_device *);
837 u32 (*get_priv_flags)(struct net_device *);
838 int (*set_priv_flags)(struct net_device *, u32);
839 int (*get_sset_count)(struct net_device *, int);
840 int (*get_rxnfc)(struct net_device *,
841 struct ethtool_rxnfc *, u32 *rule_locs);
842 int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
843 int (*flash_device)(struct net_device *, struct ethtool_flash *);
844 int (*reset)(struct net_device *, u32 *);
845 u32 (*get_rxfh_key_size)(struct net_device *);
846 u32 (*get_rxfh_indir_size)(struct net_device *);
847 int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
848 u8 *hfunc);
849 int (*set_rxfh)(struct net_device *, const u32 *indir,
850 const u8 *key, const u8 hfunc);
851 int (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,
852 u8 *hfunc, u32 rss_context);
853 int (*set_rxfh_context)(struct net_device *, const u32 *indir,
854 const u8 *key, const u8 hfunc,
855 u32 *rss_context, bool delete);
856 void (*get_channels)(struct net_device *, struct ethtool_channels *);
857 int (*set_channels)(struct net_device *, struct ethtool_channels *);
858 int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
859 int (*get_dump_data)(struct net_device *,
860 struct ethtool_dump *, void *);
861 int (*set_dump)(struct net_device *, struct ethtool_dump *);
862 int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
863 int (*get_module_info)(struct net_device *,
864 struct ethtool_modinfo *);
865 int (*get_module_eeprom)(struct net_device *,
866 struct ethtool_eeprom *, u8 *);
867 int (*get_eee)(struct net_device *, struct ethtool_eee *);
868 int (*set_eee)(struct net_device *, struct ethtool_eee *);
869 int (*get_tunable)(struct net_device *,
870 const struct ethtool_tunable *, void *);
871 int (*set_tunable)(struct net_device *,
872 const struct ethtool_tunable *, const void *);
873 int (*get_per_queue_coalesce)(struct net_device *, u32,
874 struct ethtool_coalesce *);
875 int (*set_per_queue_coalesce)(struct net_device *, u32,
876 struct ethtool_coalesce *);
877 int (*get_link_ksettings)(struct net_device *,
878 struct ethtool_link_ksettings *);
879 int (*set_link_ksettings)(struct net_device *,
880 const struct ethtool_link_ksettings *);
881 void (*get_fec_stats)(struct net_device *dev,
882 struct ethtool_fec_stats *fec_stats);
883 int (*get_fecparam)(struct net_device *,
884 struct ethtool_fecparam *);
885 int (*set_fecparam)(struct net_device *,
886 struct ethtool_fecparam *);
887 void (*get_ethtool_phy_stats)(struct net_device *,
888 struct ethtool_stats *, u64 *);
889 int (*get_phy_tunable)(struct net_device *,
890 const struct ethtool_tunable *, void *);
891 int (*set_phy_tunable)(struct net_device *,
892 const struct ethtool_tunable *, const void *);
893 int (*get_module_eeprom_by_page)(struct net_device *dev,
894 const struct ethtool_module_eeprom *page,
895 struct netlink_ext_ack *extack);
896 void (*get_eth_phy_stats)(struct net_device *dev,
897 struct ethtool_eth_phy_stats *phy_stats);
898 void (*get_eth_mac_stats)(struct net_device *dev,
899 struct ethtool_eth_mac_stats *mac_stats);
900 void (*get_eth_ctrl_stats)(struct net_device *dev,
901 struct ethtool_eth_ctrl_stats *ctrl_stats);
902 void (*get_rmon_stats)(struct net_device *dev,
903 struct ethtool_rmon_stats *rmon_stats,
904 const struct ethtool_rmon_hist_range **ranges);
905 int (*get_module_power_mode)(struct net_device *dev,
906 struct ethtool_module_power_mode_params *params,
907 struct netlink_ext_ack *extack);
908 int (*set_module_power_mode)(struct net_device *dev,
909 const struct ethtool_module_power_mode_params *params,
910 struct netlink_ext_ack *extack);
911 int (*get_mm)(struct net_device *dev, struct ethtool_mm_state *state);
912 int (*set_mm)(struct net_device *dev, struct ethtool_mm_cfg *cfg,
913 struct netlink_ext_ack *extack);
914 void (*get_mm_stats)(struct net_device *dev, struct ethtool_mm_stats *stats);
915 };
916
917 int ethtool_check_ops(const struct ethtool_ops *ops);
918
919 struct ethtool_rx_flow_rule {
920 struct flow_rule *rule;
921 unsigned long priv[];
922 };
923
924 struct ethtool_rx_flow_spec_input {
925 const struct ethtool_rx_flow_spec *fs;
926 u32 rss_ctx;
927 };
928
929 struct ethtool_rx_flow_rule *
930 ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
931 void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
932
933 bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd);
934 int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
935 const struct ethtool_link_ksettings *cmd,
936 u32 *dev_speed, u8 *dev_duplex);
937
938 struct phy_device;
939 struct phy_tdr_config;
940 struct phy_plca_cfg;
941 struct phy_plca_status;
942
943 /**
944 * struct ethtool_phy_ops - Optional PHY device options
945 * @get_sset_count: Get number of strings that @get_strings will write.
946 * @get_strings: Return a set of strings that describe the requested objects
947 * @get_stats: Return extended statistics about the PHY device.
948 * @get_plca_cfg: Return PLCA configuration.
949 * @set_plca_cfg: Set PLCA configuration.
950 * @get_plca_status: Get PLCA configuration.
951 * @start_cable_test: Start a cable test
952 * @start_cable_test_tdr: Start a Time Domain Reflectometry cable test
953 *
954 * All operations are optional (i.e. the function pointer may be set to %NULL)
955 * and callers must take this into account. Callers must hold the RTNL lock.
956 */
957 struct ethtool_phy_ops {
958 int (*get_sset_count)(struct phy_device *dev);
959 int (*get_strings)(struct phy_device *dev, u8 *data);
960 int (*get_stats)(struct phy_device *dev,
961 struct ethtool_stats *stats, u64 *data);
962 int (*get_plca_cfg)(struct phy_device *dev,
963 struct phy_plca_cfg *plca_cfg);
964 int (*set_plca_cfg)(struct phy_device *dev,
965 const struct phy_plca_cfg *plca_cfg,
966 struct netlink_ext_ack *extack);
967 int (*get_plca_status)(struct phy_device *dev,
968 struct phy_plca_status *plca_st);
969 int (*start_cable_test)(struct phy_device *phydev,
970 struct netlink_ext_ack *extack);
971 int (*start_cable_test_tdr)(struct phy_device *phydev,
972 struct netlink_ext_ack *extack,
973 const struct phy_tdr_config *config);
974 };
975
976 /**
977 * ethtool_set_ethtool_phy_ops - Set the ethtool_phy_ops singleton
978 * @ops: Ethtool PHY operations to set
979 */
980 void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops);
981
982 /**
983 * ethtool_params_from_link_mode - Derive link parameters from a given link mode
984 * @link_ksettings: Link parameters to be derived from the link mode
985 * @link_mode: Link mode
986 */
987 void
988 ethtool_params_from_link_mode(struct ethtool_link_ksettings *link_ksettings,
989 enum ethtool_link_mode_bit_indices link_mode);
990
991 /**
992 * ethtool_get_phc_vclocks - Derive phc vclocks information, and caller
993 * is responsible to free memory of vclock_index
994 * @dev: pointer to net_device structure
995 * @vclock_index: pointer to pointer of vclock index
996 *
997 * Return number of phc vclocks
998 */
999 int ethtool_get_phc_vclocks(struct net_device *dev, int **vclock_index);
1000
1001 /* Some generic methods drivers may use in their ethtool_ops */
1002 u32 ethtool_op_get_link(struct net_device *dev);
1003 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
1004
1005 /**
1006 * ethtool_mm_frag_size_add_to_min - Translate (standard) additional fragment
1007 * size expressed as multiplier into (absolute) minimum fragment size
1008 * value expressed in octets
1009 * @val_add: Value of addFragSize multiplier
1010 */
ethtool_mm_frag_size_add_to_min(u32 val_add)1011 static inline u32 ethtool_mm_frag_size_add_to_min(u32 val_add)
1012 {
1013 return (ETH_ZLEN + ETH_FCS_LEN) * (1 + val_add) - ETH_FCS_LEN;
1014 }
1015
1016 /**
1017 * ethtool_mm_frag_size_min_to_add - Translate (absolute) minimum fragment size
1018 * expressed in octets into (standard) additional fragment size expressed
1019 * as multiplier
1020 * @val_min: Value of addFragSize variable in octets
1021 * @val_add: Pointer where the standard addFragSize value is to be returned
1022 * @extack: Netlink extended ack
1023 *
1024 * Translate a value in octets to one of 0, 1, 2, 3 according to the reverse
1025 * application of the 802.3 formula 64 * (1 + addFragSize) - 4. To be called
1026 * by drivers which do not support programming the minimum fragment size to a
1027 * continuous range. Returns error on other fragment length values.
1028 */
ethtool_mm_frag_size_min_to_add(u32 val_min,u32 * val_add,struct netlink_ext_ack * extack)1029 static inline int ethtool_mm_frag_size_min_to_add(u32 val_min, u32 *val_add,
1030 struct netlink_ext_ack *extack)
1031 {
1032 u32 add_frag_size;
1033
1034 for (add_frag_size = 0; add_frag_size < 4; add_frag_size++) {
1035 if (ethtool_mm_frag_size_add_to_min(add_frag_size) == val_min) {
1036 *val_add = add_frag_size;
1037 return 0;
1038 }
1039 }
1040
1041 NL_SET_ERR_MSG_MOD(extack,
1042 "minFragSize required to be one of 60, 124, 188 or 252");
1043 return -EINVAL;
1044 }
1045
1046 /**
1047 * ethtool_sprintf - Write formatted string to ethtool string data
1048 * @data: Pointer to start of string to update
1049 * @fmt: Format of string to write
1050 *
1051 * Write formatted string to data. Update data to point at start of
1052 * next string.
1053 */
1054 extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
1055 #endif /* _LINUX_ETHTOOL_H */
1056
