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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 : :
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[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 : : */
54 : : enum ethtool_phys_id_state {
55 : : ETHTOOL_ID_INACTIVE,
56 : : ETHTOOL_ID_ACTIVE,
57 : : ETHTOOL_ID_ON,
58 : : ETHTOOL_ID_OFF
59 : : };
60 : :
61 : : enum {
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 : :
83 : : struct net_device;
84 : :
85 : : /* Some generic methods drivers may use in their ethtool_ops */
86 : : u32 ethtool_op_get_link(struct net_device *dev);
87 : : int 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 : : */
96 : 5376 : static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
97 : : {
98 : 5376 : 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 : : */
108 : : struct 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 : :
159 : : extern 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 : : */
170 : : void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
171 : : struct ethtool_link_ksettings *src);
172 : :
173 : : void 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. */
177 : : bool 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_rxfh_context: Get the contents of the RX flow hash indirection table,
264 : : * hash key, and/or hash function assiciated to the given rss context.
265 : : * Returns a negative error code or zero.
266 : : * @set_rxfh_context: Create, remove and configure RSS contexts. Allows setting
267 : : * the contents of the RX flow hash indirection table, hash key, and/or
268 : : * hash function associated to the given context. Arguments which are set
269 : : * to %NULL or zero will remain unchanged.
270 : : * Returns a negative error code or zero. An error code must be returned
271 : : * if at least one unsupported change was requested.
272 : : * @get_channels: Get number of channels.
273 : : * @set_channels: Set number of channels. Returns a negative error code or
274 : : * zero.
275 : : * @get_dump_flag: Get dump flag indicating current dump length, version,
276 : : * and flag of the device.
277 : : * @get_dump_data: Get dump data.
278 : : * @set_dump: Set dump specific flags to the device.
279 : : * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
280 : : * Drivers supporting transmit time stamps in software should set this to
281 : : * ethtool_op_get_ts_info().
282 : : * @get_module_info: Get the size and type of the eeprom contained within
283 : : * a plug-in module.
284 : : * @get_module_eeprom: Get the eeprom information from the plug-in module
285 : : * @get_eee: Get Energy-Efficient (EEE) supported and status.
286 : : * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
287 : : * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
288 : : * It must check that the given queue number is valid. If neither a RX nor
289 : : * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
290 : : * queue has this number, set the inapplicable fields to ~0 and return 0.
291 : : * Returns a negative error code or zero.
292 : : * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
293 : : * It must check that the given queue number is valid. If neither a RX nor
294 : : * a TX queue has this number, return -EINVAL. If only a RX queue or a TX
295 : : * queue has this number, ignore the inapplicable fields.
296 : : * Returns a negative error code or zero.
297 : : * @get_link_ksettings: Get various device settings including Ethernet link
298 : : * settings. The %cmd and %link_mode_masks_nwords fields should be
299 : : * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
300 : : * any change to them will be overwritten by kernel. Returns a negative
301 : : * error code or zero.
302 : : * @set_link_ksettings: Set various device settings including Ethernet link
303 : : * settings. The %cmd and %link_mode_masks_nwords fields should be
304 : : * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter),
305 : : * any change to them will be overwritten by kernel. Returns a negative
306 : : * error code or zero.
307 : : * @get_fecparam: Get the network device Forward Error Correction parameters.
308 : : * @set_fecparam: Set the network device Forward Error Correction parameters.
309 : : * @get_ethtool_phy_stats: Return extended statistics about the PHY device.
310 : : * This is only useful if the device maintains PHY statistics and
311 : : * cannot use the standard PHY library helpers.
312 : : *
313 : : * All operations are optional (i.e. the function pointer may be set
314 : : * to %NULL) and callers must take this into account. Callers must
315 : : * hold the RTNL lock.
316 : : *
317 : : * See the structures used by these operations for further documentation.
318 : : * Note that for all operations using a structure ending with a zero-
319 : : * length array, the array is allocated separately in the kernel and
320 : : * is passed to the driver as an additional parameter.
321 : : *
322 : : * See &struct net_device and &struct net_device_ops for documentation
323 : : * of the generic netdev features interface.
324 : : */
325 : : struct ethtool_ops {
326 : : void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
327 : : int (*get_regs_len)(struct net_device *);
328 : : void (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
329 : : void (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
330 : : int (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
331 : : u32 (*get_msglevel)(struct net_device *);
332 : : void (*set_msglevel)(struct net_device *, u32);
333 : : int (*nway_reset)(struct net_device *);
334 : : u32 (*get_link)(struct net_device *);
335 : : int (*get_eeprom_len)(struct net_device *);
336 : : int (*get_eeprom)(struct net_device *,
337 : : struct ethtool_eeprom *, u8 *);
338 : : int (*set_eeprom)(struct net_device *,
339 : : struct ethtool_eeprom *, u8 *);
340 : : int (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
341 : : int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
342 : : void (*get_ringparam)(struct net_device *,
343 : : struct ethtool_ringparam *);
344 : : int (*set_ringparam)(struct net_device *,
345 : : struct ethtool_ringparam *);
346 : : void (*get_pauseparam)(struct net_device *,
347 : : struct ethtool_pauseparam*);
348 : : int (*set_pauseparam)(struct net_device *,
349 : : struct ethtool_pauseparam*);
350 : : void (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
351 : : void (*get_strings)(struct net_device *, u32 stringset, u8 *);
352 : : int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
353 : : void (*get_ethtool_stats)(struct net_device *,
354 : : struct ethtool_stats *, u64 *);
355 : : int (*begin)(struct net_device *);
356 : : void (*complete)(struct net_device *);
357 : : u32 (*get_priv_flags)(struct net_device *);
358 : : int (*set_priv_flags)(struct net_device *, u32);
359 : : int (*get_sset_count)(struct net_device *, int);
360 : : int (*get_rxnfc)(struct net_device *,
361 : : struct ethtool_rxnfc *, u32 *rule_locs);
362 : : int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
363 : : int (*flash_device)(struct net_device *, struct ethtool_flash *);
364 : : int (*reset)(struct net_device *, u32 *);
365 : : u32 (*get_rxfh_key_size)(struct net_device *);
366 : : u32 (*get_rxfh_indir_size)(struct net_device *);
367 : : int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
368 : : u8 *hfunc);
369 : : int (*set_rxfh)(struct net_device *, const u32 *indir,
370 : : const u8 *key, const u8 hfunc);
371 : : int (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,
372 : : u8 *hfunc, u32 rss_context);
373 : : int (*set_rxfh_context)(struct net_device *, const u32 *indir,
374 : : const u8 *key, const u8 hfunc,
375 : : u32 *rss_context, bool delete);
376 : : void (*get_channels)(struct net_device *, struct ethtool_channels *);
377 : : int (*set_channels)(struct net_device *, struct ethtool_channels *);
378 : : int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
379 : : int (*get_dump_data)(struct net_device *,
380 : : struct ethtool_dump *, void *);
381 : : int (*set_dump)(struct net_device *, struct ethtool_dump *);
382 : : int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
383 : : int (*get_module_info)(struct net_device *,
384 : : struct ethtool_modinfo *);
385 : : int (*get_module_eeprom)(struct net_device *,
386 : : struct ethtool_eeprom *, u8 *);
387 : : int (*get_eee)(struct net_device *, struct ethtool_eee *);
388 : : int (*set_eee)(struct net_device *, struct ethtool_eee *);
389 : : int (*get_tunable)(struct net_device *,
390 : : const struct ethtool_tunable *, void *);
391 : : int (*set_tunable)(struct net_device *,
392 : : const struct ethtool_tunable *, const void *);
393 : : int (*get_per_queue_coalesce)(struct net_device *, u32,
394 : : struct ethtool_coalesce *);
395 : : int (*set_per_queue_coalesce)(struct net_device *, u32,
396 : : struct ethtool_coalesce *);
397 : : int (*get_link_ksettings)(struct net_device *,
398 : : struct ethtool_link_ksettings *);
399 : : int (*set_link_ksettings)(struct net_device *,
400 : : const struct ethtool_link_ksettings *);
401 : : int (*get_fecparam)(struct net_device *,
402 : : struct ethtool_fecparam *);
403 : : int (*set_fecparam)(struct net_device *,
404 : : struct ethtool_fecparam *);
405 : : void (*get_ethtool_phy_stats)(struct net_device *,
406 : : struct ethtool_stats *, u64 *);
407 : : };
408 : :
409 : : struct ethtool_rx_flow_rule {
410 : : struct flow_rule *rule;
411 : : unsigned long priv[0];
412 : : };
413 : :
414 : : struct ethtool_rx_flow_spec_input {
415 : : const struct ethtool_rx_flow_spec *fs;
416 : : u32 rss_ctx;
417 : : };
418 : :
419 : : struct ethtool_rx_flow_rule *
420 : : ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
421 : : void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
422 : :
423 : : #endif /* _LINUX_ETHTOOL_H */
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