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 <uapi/linux/ethtool.h>
19
20#ifdef CONFIG_COMPAT
21
22struct 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
32struct 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[0];
39};
40
41#endif /* CONFIG_COMPAT */
42
43#include <linux/rculist.h>
44
45/**
46 * enum ethtool_phys_id_state - indicator state for physical identification
47 * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
48 * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
49 * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
50 * is not supported)
51 * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
52 * is not supported)
53 */
54enum ethtool_phys_id_state {
55 ETHTOOL_ID_INACTIVE,
56 ETHTOOL_ID_ACTIVE,
57 ETHTOOL_ID_ON,
58 ETHTOOL_ID_OFF
59};
60
61enum {
62 ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
63 ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
64 ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
65
66 /*
67 * Add your fresh new hash function bits above and remember to update
68 * rss_hash_func_strings[] in ethtool.c
69 */
70 ETH_RSS_HASH_FUNCS_COUNT
71};
72
73#define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
74#define __ETH_RSS_HASH(name) __ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
75
76#define ETH_RSS_HASH_TOP __ETH_RSS_HASH(TOP)
77#define ETH_RSS_HASH_XOR __ETH_RSS_HASH(XOR)
78#define ETH_RSS_HASH_CRC32 __ETH_RSS_HASH(CRC32)
79
80#define ETH_RSS_HASH_UNKNOWN 0
81#define ETH_RSS_HASH_NO_CHANGE 0
82
83struct net_device;
84
85/* Some generic methods drivers may use in their ethtool_ops */
86u32 ethtool_op_get_link(struct net_device *dev);
87int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
88
89/**
90 * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
91 * @index: Index in RX flow hash indirection table
92 * @n_rx_rings: Number of RX rings to use
93 *
94 * This function provides the default policy for RX flow hash indirection.
95 */
96static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
97{
98 return index % n_rx_rings;
99}
100
101/* declare a link mode bitmap */
102#define __ETHTOOL_DECLARE_LINK_MODE_MASK(name) \
103 DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
104
105/* drivers must ignore base.cmd and base.link_mode_masks_nwords
106 * fields, but they are allowed to overwrite them (will be ignored).
107 */
108struct ethtool_link_ksettings {
109 struct ethtool_link_settings base;
110 struct {
111 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
112 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
113 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
114 } link_modes;
115};
116
117/**
118 * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
119 * @ptr : pointer to struct ethtool_link_ksettings
120 * @name : one of supported/advertising/lp_advertising
121 */
122#define ethtool_link_ksettings_zero_link_mode(ptr, name) \
123 bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
124
125/**
126 * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
127 * link mode mask
128 * @ptr : pointer to struct ethtool_link_ksettings
129 * @name : one of supported/advertising/lp_advertising
130 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
131 * (not atomic, no bound checking)
132 */
133#define ethtool_link_ksettings_add_link_mode(ptr, name, mode) \
134 __set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
135
136/**
137 * ethtool_link_ksettings_del_link_mode - clear bit in link_ksettings
138 * link mode mask
139 * @ptr : pointer to struct ethtool_link_ksettings
140 * @name : one of supported/advertising/lp_advertising
141 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
142 * (not atomic, no bound checking)
143 */
144#define ethtool_link_ksettings_del_link_mode(ptr, name, mode) \
145 __clear_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
146
147/**
148 * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
149 * @ptr : pointer to struct ethtool_link_ksettings
150 * @name : one of supported/advertising/lp_advertising
151 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT
152 * (not atomic, no bound checking)
153 *
154 * Returns true/false.
155 */
156#define ethtool_link_ksettings_test_link_mode(ptr, name, mode) \
157 test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
158
159extern int
160__ethtool_get_link_ksettings(struct net_device *dev,
161 struct ethtool_link_ksettings *link_ksettings);
162
163/**
164 * ethtool_intersect_link_masks - Given two link masks, AND them together
165 * @dst: first mask and where result is stored
166 * @src: second mask to intersect with
167 *
168 * Given two link mode masks, AND them together and save the result in dst.
169 */
170void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
171 struct ethtool_link_ksettings *src);
172
173void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
174 u32 legacy_u32);
175
176/* return false if src had higher bits set. lower bits always updated. */
177bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
178 const unsigned long *src);
179
180/**
181 * struct ethtool_ops - optional netdev operations
182 * @get_drvinfo: Report driver/device information. Should only set the
183 * @driver, @version, @fw_version and @bus_info fields. If not
184 * implemented, the @driver and @bus_info fields will be filled in
185 * according to the netdev's parent device.
186 * @get_regs_len: Get buffer length required for @get_regs
187 * @get_regs: Get device registers
188 * @get_wol: Report whether Wake-on-Lan is enabled
189 * @set_wol: Turn Wake-on-Lan on or off. Returns a negative error code
190 * or zero.
191 * @get_msglevel: Report driver message level. This should be the value
192 * of the @msg_enable field used by netif logging functions.
193 * @set_msglevel: Set driver message level
194 * @nway_reset: Restart autonegotiation. Returns a negative error code
195 * or zero.
196 * @get_link: Report whether physical link is up. Will only be called if
197 * the netdev is up. Should usually be set to ethtool_op_get_link(),
198 * which uses netif_carrier_ok().
199 * @get_eeprom: Read data from the device EEPROM.
200 * Should fill in the magic field. Don't need to check len for zero
201 * or wraparound. Fill in the data argument with the eeprom values
202 * from offset to offset + len. Update len to the amount read.
203 * Returns an error or zero.
204 * @set_eeprom: Write data to the device EEPROM.
205 * Should validate the magic field. Don't need to check len for zero
206 * or wraparound. Update len to the amount written. Returns an error
207 * or zero.
208 * @get_coalesce: Get interrupt coalescing parameters. Returns a negative
209 * error code or zero.
210 * @set_coalesce: Set interrupt coalescing parameters. Returns a negative
211 * error code or zero.
212 * @get_ringparam: Report ring sizes
213 * @set_ringparam: Set ring sizes. Returns a negative error code or zero.
214 * @get_pauseparam: Report pause parameters
215 * @set_pauseparam: Set pause parameters. Returns a negative error code
216 * or zero.
217 * @self_test: Run specified self-tests
218 * @get_strings: Return a set of strings that describe the requested objects
219 * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
220 * attached to it. The implementation may update the indicator
221 * asynchronously or synchronously, but in either case it must return
222 * quickly. It is initially called with the argument %ETHTOOL_ID_ACTIVE,
223 * and must either activate asynchronous updates and return zero, return
224 * a negative error or return a positive frequency for synchronous
225 * indication (e.g. 1 for one on/off cycle per second). If it returns
226 * a frequency then it will be called again at intervals with the
227 * argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
228 * the indicator accordingly. Finally, it is called with the argument
229 * %ETHTOOL_ID_INACTIVE and must deactivate the indicator. Returns a
230 * negative error code or zero.
231 * @get_ethtool_stats: Return extended statistics about the device.
232 * This is only useful if the device maintains statistics not
233 * included in &struct rtnl_link_stats64.
234 * @begin: Function to be called before any other operation. Returns a
235 * negative error code or zero.
236 * @complete: Function to be called after any other operation except
237 * @begin. Will be called even if the other operation failed.
238 * @get_priv_flags: Report driver-specific feature flags.
239 * @set_priv_flags: Set driver-specific feature flags. Returns a negative
240 * error code or zero.
241 * @get_sset_count: Get number of strings that @get_strings will write.
242 * @get_rxnfc: Get RX flow classification rules. Returns a negative
243 * error code or zero.
244 * @set_rxnfc: Set RX flow classification rules. Returns a negative
245 * error code or zero.
246 * @flash_device: Write a firmware image to device's flash memory.
247 * Returns a negative error code or zero.
248 * @reset: Reset (part of) the device, as specified by a bitmask of
249 * flags from &enum ethtool_reset_flags. Returns a negative
250 * error code or zero.
251 * @get_rxfh_key_size: Get the size of the RX flow hash key.
252 * Returns zero if not supported for this specific device.
253 * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
254 * Returns zero if not supported for this specific device.
255 * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
256 * and/or hash function.
257 * Returns a negative error code or zero.
258 * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
259 * key, and/or hash function. Arguments which are set to %NULL or zero
260 * will remain unchanged.
261 * Returns a negative error code or zero. An error code must be returned
262 * if at least one unsupported change was requested.
263 * @get_channels: Get number of channels.
264 * @set_channels: Set number of channels. Returns a negative error code or
265 * zero.
266 * @get_dump_flag: Get dump flag indicating current dump length, version,
267 * and flag of the device.
268 * @get_dump_data: Get dump data.
269 * @set_dump: Set dump specific flags to the device.
270 * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
271 * Drivers supporting transmit time stamps in software should set this to
272 * ethtool_op_get_ts_info().
273 * @get_module_info: Get the size and type of the eeprom contained within
274 * a plug-in module.
275 * @get_module_eeprom: Get the eeprom information from the plug-in module
276 * @get_eee: Get Energy-Efficient (EEE) supported and status.
277 * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
278 * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
279 * It must check that the given queue number is valid. If neither a RX nor
280 * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
281 * queue has this number, set the inapplicable fields to ~0 and return 0.
282 * Returns a negative error code or zero.
283 * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
284 * It must check that the given queue number is valid. If neither a RX nor
285 * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
286 * queue has this number, ignore the inapplicable fields.
287 * Returns a negative error code or zero.
288 * @get_link_ksettings: Get various device settings including Ethernet link
289 * settings. The %cmd and %link_mode_masks_nwords fields should be
290 * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
291 * any change to them will be overwritten by kernel. Returns a negative
292 * error code or zero.
293 * @set_link_ksettings: Set various device settings including Ethernet link
294 * settings. The %cmd and %link_mode_masks_nwords fields should be
295 * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
296 * any change to them will be overwritten by kernel. Returns a negative
297 * error code or zero.
298 * @get_fecparam: Get the network device Forward Error Correction parameters.
299 * @set_fecparam: Set the network device Forward Error Correction parameters.
300 * @get_ethtool_phy_stats: Return extended statistics about the PHY device.
301 * This is only useful if the device maintains PHY statistics and
302 * cannot use the standard PHY library helpers.
303 *
304 * All operations are optional (i.e. the function pointer may be set
305 * to %NULL) and callers must take this into account. Callers must
306 * hold the RTNL lock.
307 *
308 * See the structures used by these operations for further documentation.
309 * Note that for all operations using a structure ending with a zero-
310 * length array, the array is allocated separately in the kernel and
311 * is passed to the driver as an additional parameter.
312 *
313 * See &struct net_device and &struct net_device_ops for documentation
314 * of the generic netdev features interface.
315 */
316struct ethtool_ops {
317 void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
318 int (*get_regs_len)(struct net_device *);
319 void (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
320 void (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
321 int (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
322 u32 (*get_msglevel)(struct net_device *);
323 void (*set_msglevel)(struct net_device *, u32);
324 int (*nway_reset)(struct net_device *);
325 u32 (*get_link)(struct net_device *);
326 int (*get_eeprom_len)(struct net_device *);
327 int (*get_eeprom)(struct net_device *,
328 struct ethtool_eeprom *, u8 *);
329 int (*set_eeprom)(struct net_device *,
330 struct ethtool_eeprom *, u8 *);
331 int (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
332 int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
333 void (*get_ringparam)(struct net_device *,
334 struct ethtool_ringparam *);
335 int (*set_ringparam)(struct net_device *,
336 struct ethtool_ringparam *);
337 void (*get_pauseparam)(struct net_device *,
338 struct ethtool_pauseparam*);
339 int (*set_pauseparam)(struct net_device *,
340 struct ethtool_pauseparam*);
341 void (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
342 void (*get_strings)(struct net_device *, u32 stringset, u8 *);
343 int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
344 void (*get_ethtool_stats)(struct net_device *,
345 struct ethtool_stats *, u64 *);
346 int (*begin)(struct net_device *);
347 void (*complete)(struct net_device *);
348 u32 (*get_priv_flags)(struct net_device *);
349 int (*set_priv_flags)(struct net_device *, u32);
350 int (*get_sset_count)(struct net_device *, int);
351 int (*get_rxnfc)(struct net_device *,
352 struct ethtool_rxnfc *, u32 *rule_locs);
353 int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
354 int (*flash_device)(struct net_device *, struct ethtool_flash *);
355 int (*reset)(struct net_device *, u32 *);
356 u32 (*get_rxfh_key_size)(struct net_device *);
357 u32 (*get_rxfh_indir_size)(struct net_device *);
358 int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
359 u8 *hfunc);
360 int (*set_rxfh)(struct net_device *, const u32 *indir,
361 const u8 *key, const u8 hfunc);
362 int (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,
363 u8 *hfunc, u32 rss_context);
364 int (*set_rxfh_context)(struct net_device *, const u32 *indir,
365 const u8 *key, const u8 hfunc,
366 u32 *rss_context, bool delete);
367 void (*get_channels)(struct net_device *, struct ethtool_channels *);
368 int (*set_channels)(struct net_device *, struct ethtool_channels *);
369 int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
370 int (*get_dump_data)(struct net_device *,
371 struct ethtool_dump *, void *);
372 int (*set_dump)(struct net_device *, struct ethtool_dump *);
373 int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
374 int (*get_module_info)(struct net_device *,
375 struct ethtool_modinfo *);
376 int (*get_module_eeprom)(struct net_device *,
377 struct ethtool_eeprom *, u8 *);
378 int (*get_eee)(struct net_device *, struct ethtool_eee *);
379 int (*set_eee)(struct net_device *, struct ethtool_eee *);
380 int (*get_tunable)(struct net_device *,
381 const struct ethtool_tunable *, void *);
382 int (*set_tunable)(struct net_device *,
383 const struct ethtool_tunable *, const void *);
384 int (*get_per_queue_coalesce)(struct net_device *, u32,
385 struct ethtool_coalesce *);
386 int (*set_per_queue_coalesce)(struct net_device *, u32,
387 struct ethtool_coalesce *);
388 int (*get_link_ksettings)(struct net_device *,
389 struct ethtool_link_ksettings *);
390 int (*set_link_ksettings)(struct net_device *,
391 const struct ethtool_link_ksettings *);
392 int (*get_fecparam)(struct net_device *,
393 struct ethtool_fecparam *);
394 int (*set_fecparam)(struct net_device *,
395 struct ethtool_fecparam *);
396 void (*get_ethtool_phy_stats)(struct net_device *,
397 struct ethtool_stats *, u64 *);
398};
399
400struct ethtool_rx_flow_rule {
401 struct flow_rule *rule;
402 unsigned long priv[0];
403};
404
405struct ethtool_rx_flow_spec_input {
406 const struct ethtool_rx_flow_spec *fs;
407 u32 rss_ctx;
408};
409
410struct ethtool_rx_flow_rule *
411ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
412void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
413
414#endif /* _LINUX_ETHTOOL_H */
415