1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * ethtool.h: Defines for Linux ethtool. 4 * 5 * Copyright (C) 1998 David S. Miller ([email protected]) 6 * Copyright 2001 Jeff Garzik <[email protected]> 7 * Portions Copyright 2001 Sun Microsystems ([email protected]) 8 * Portions Copyright 2002 Intel ([email protected], 9 * [email protected], 10 * [email protected]) 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 static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings) 97 { 98 return index % n_rx_rings; 99 } 100 101 /* number of link mode bits/ulongs handled internally by kernel */ 102 #define __ETHTOOL_LINK_MODE_MASK_NBITS \ 103 (__ETHTOOL_LINK_MODE_LAST + 1) 104 105 /* declare a link mode bitmap */ 106 #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name) \ 107 DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS) 108 109 /* drivers must ignore base.cmd and base.link_mode_masks_nwords 110 * fields, but they are allowed to overwrite them (will be ignored). 111 */ 112 struct ethtool_link_ksettings { 113 struct ethtool_link_settings base; 114 struct { 115 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); 116 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); 117 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising); 118 } link_modes; 119 }; 120 121 /** 122 * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask 123 * @ptr : pointer to struct ethtool_link_ksettings 124 * @name : one of supported/advertising/lp_advertising 125 */ 126 #define ethtool_link_ksettings_zero_link_mode(ptr, name) \ 127 bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS) 128 129 /** 130 * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings 131 * link mode mask 132 * @ptr : pointer to struct ethtool_link_ksettings 133 * @name : one of supported/advertising/lp_advertising 134 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT 135 * (not atomic, no bound checking) 136 */ 137 #define ethtool_link_ksettings_add_link_mode(ptr, name, mode) \ 138 __set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name) 139 140 /** 141 * ethtool_link_ksettings_del_link_mode - clear bit in link_ksettings 142 * link mode mask 143 * @ptr : pointer to struct ethtool_link_ksettings 144 * @name : one of supported/advertising/lp_advertising 145 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT 146 * (not atomic, no bound checking) 147 */ 148 #define ethtool_link_ksettings_del_link_mode(ptr, name, mode) \ 149 __clear_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name) 150 151 /** 152 * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask 153 * @ptr : pointer to struct ethtool_link_ksettings 154 * @name : one of supported/advertising/lp_advertising 155 * @mode : one of the ETHTOOL_LINK_MODE_*_BIT 156 * (not atomic, no bound checking) 157 * 158 * Returns true/false. 159 */ 160 #define ethtool_link_ksettings_test_link_mode(ptr, name, mode) \ 161 test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name) 162 163 extern int 164 __ethtool_get_link_ksettings(struct net_device *dev, 165 struct ethtool_link_ksettings *link_ksettings); 166 167 /** 168 * ethtool_intersect_link_masks - Given two link masks, AND them together 169 * @dst: first mask and where result is stored 170 * @src: second mask to intersect with 171 * 172 * Given two link mode masks, AND them together and save the result in dst. 173 */ 174 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 175 struct ethtool_link_ksettings *src); 176 177 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 178 u32 legacy_u32); 179 180 /* return false if src had higher bits set. lower bits always updated. */ 181 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 182 const unsigned long *src); 183 184 /** 185 * struct ethtool_ops - optional netdev operations 186 * @get_drvinfo: Report driver/device information. Should only set the 187 * @driver, @version, @fw_version and @bus_info fields. If not 188 * implemented, the @driver and @bus_info fields will be filled in 189 * according to the netdev's parent device. 190 * @get_regs_len: Get buffer length required for @get_regs 191 * @get_regs: Get device registers 192 * @get_wol: Report whether Wake-on-Lan is enabled 193 * @set_wol: Turn Wake-on-Lan on or off. Returns a negative error code 194 * or zero. 195 * @get_msglevel: Report driver message level. This should be the value 196 * of the @msg_enable field used by netif logging functions. 197 * @set_msglevel: Set driver message level 198 * @nway_reset: Restart autonegotiation. Returns a negative error code 199 * or zero. 200 * @get_link: Report whether physical link is up. Will only be called if 201 * the netdev is up. Should usually be set to ethtool_op_get_link(), 202 * which uses netif_carrier_ok(). 203 * @get_eeprom: Read data from the device EEPROM. 204 * Should fill in the magic field. Don't need to check len for zero 205 * or wraparound. Fill in the data argument with the eeprom values 206 * from offset to offset + len. Update len to the amount read. 207 * Returns an error or zero. 208 * @set_eeprom: Write data to the device EEPROM. 209 * Should validate the magic field. Don't need to check len for zero 210 * or wraparound. Update len to the amount written. Returns an error 211 * or zero. 212 * @get_coalesce: Get interrupt coalescing parameters. Returns a negative 213 * error code or zero. 214 * @set_coalesce: Set interrupt coalescing parameters. Returns a negative 215 * error code or zero. 216 * @get_ringparam: Report ring sizes 217 * @set_ringparam: Set ring sizes. Returns a negative error code or zero. 218 * @get_pauseparam: Report pause parameters 219 * @set_pauseparam: Set pause parameters. Returns a negative error code 220 * or zero. 221 * @self_test: Run specified self-tests 222 * @get_strings: Return a set of strings that describe the requested objects 223 * @set_phys_id: Identify the physical devices, e.g. by flashing an LED 224 * attached to it. The implementation may update the indicator 225 * asynchronously or synchronously, but in either case it must return 226 * quickly. It is initially called with the argument %ETHTOOL_ID_ACTIVE, 227 * and must either activate asynchronous updates and return zero, return 228 * a negative error or return a positive frequency for synchronous 229 * indication (e.g. 1 for one on/off cycle per second). If it returns 230 * a frequency then it will be called again at intervals with the 231 * argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of 232 * the indicator accordingly. Finally, it is called with the argument 233 * %ETHTOOL_ID_INACTIVE and must deactivate the indicator. Returns a 234 * negative error code or zero. 235 * @get_ethtool_stats: Return extended statistics about the device. 236 * This is only useful if the device maintains statistics not 237 * included in &struct rtnl_link_stats64. 238 * @begin: Function to be called before any other operation. Returns a 239 * negative error code or zero. 240 * @complete: Function to be called after any other operation except 241 * @begin. Will be called even if the other operation failed. 242 * @get_priv_flags: Report driver-specific feature flags. 243 * @set_priv_flags: Set driver-specific feature flags. Returns a negative 244 * error code or zero. 245 * @get_sset_count: Get number of strings that @get_strings will write. 246 * @get_rxnfc: Get RX flow classification rules. Returns a negative 247 * error code or zero. 248 * @set_rxnfc: Set RX flow classification rules. Returns a negative 249 * error code or zero. 250 * @flash_device: Write a firmware image to device's flash memory. 251 * Returns a negative error code or zero. 252 * @reset: Reset (part of) the device, as specified by a bitmask of 253 * flags from &enum ethtool_reset_flags. Returns a negative 254 * error code or zero. 255 * @get_rxfh_key_size: Get the size of the RX flow hash key. 256 * Returns zero if not supported for this specific device. 257 * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table. 258 * Returns zero if not supported for this specific device. 259 * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key 260 * and/or hash function. 261 * Returns a negative error code or zero. 262 * @set_rxfh: Set the contents of the RX flow hash indirection table, hash 263 * key, and/or hash function. Arguments which are set to %NULL or zero 264 * will remain unchanged. 265 * Returns a negative error code or zero. An error code must be returned 266 * if at least one unsupported change was requested. 267 * @get_channels: Get number of channels. 268 * @set_channels: Set number of channels. Returns a negative error code or 269 * zero. 270 * @get_dump_flag: Get dump flag indicating current dump length, version, 271 * and flag of the device. 272 * @get_dump_data: Get dump data. 273 * @set_dump: Set dump specific flags to the device. 274 * @get_ts_info: Get the time stamping and PTP hardware clock capabilities. 275 * Drivers supporting transmit time stamps in software should set this to 276 * ethtool_op_get_ts_info(). 277 * @get_module_info: Get the size and type of the eeprom contained within 278 * a plug-in module. 279 * @get_module_eeprom: Get the eeprom information from the plug-in module 280 * @get_eee: Get Energy-Efficient (EEE) supported and status. 281 * @set_eee: Set EEE status (enable/disable) as well as LPI timers. 282 * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue. 283 * It must check that the given queue number is valid. If neither a RX nor 284 * a TX queue has this number, return -EINVAL. If only a RX queue or a TX 285 * queue has this number, set the inapplicable fields to ~0 and return 0. 286 * Returns a negative error code or zero. 287 * @set_per_queue_coalesce: Set 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, ignore the inapplicable fields. 291 * Returns a negative error code or zero. 292 * @get_link_ksettings: Get various device settings including Ethernet link 293 * settings. The %cmd and %link_mode_masks_nwords fields should be 294 * ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter), 295 * any change to them will be overwritten by kernel. Returns a negative 296 * error code or zero. 297 * @set_link_ksettings: Set 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 * @get_fecparam: Get the network device Forward Error Correction parameters. 303 * @set_fecparam: Set the network device Forward Error Correction parameters. 304 * @get_ethtool_phy_stats: Return extended statistics about the PHY device. 305 * This is only useful if the device maintains PHY statistics and 306 * cannot use the standard PHY library helpers. 307 * 308 * All operations are optional (i.e. the function pointer may be set 309 * to %NULL) and callers must take this into account. Callers must 310 * hold the RTNL lock. 311 * 312 * See the structures used by these operations for further documentation. 313 * Note that for all operations using a structure ending with a zero- 314 * length array, the array is allocated separately in the kernel and 315 * is passed to the driver as an additional parameter. 316 * 317 * See &struct net_device and &struct net_device_ops for documentation 318 * of the generic netdev features interface. 319 */ 320 struct ethtool_ops { 321 void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *); 322 int (*get_regs_len)(struct net_device *); 323 void (*get_regs)(struct net_device *, struct ethtool_regs *, void *); 324 void (*get_wol)(struct net_device *, struct ethtool_wolinfo *); 325 int (*set_wol)(struct net_device *, struct ethtool_wolinfo *); 326 u32 (*get_msglevel)(struct net_device *); 327 void (*set_msglevel)(struct net_device *, u32); 328 int (*nway_reset)(struct net_device *); 329 u32 (*get_link)(struct net_device *); 330 int (*get_eeprom_len)(struct net_device *); 331 int (*get_eeprom)(struct net_device *, 332 struct ethtool_eeprom *, u8 *); 333 int (*set_eeprom)(struct net_device *, 334 struct ethtool_eeprom *, u8 *); 335 int (*get_coalesce)(struct net_device *, struct ethtool_coalesce *); 336 int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *); 337 void (*get_ringparam)(struct net_device *, 338 struct ethtool_ringparam *); 339 int (*set_ringparam)(struct net_device *, 340 struct ethtool_ringparam *); 341 void (*get_pauseparam)(struct net_device *, 342 struct ethtool_pauseparam*); 343 int (*set_pauseparam)(struct net_device *, 344 struct ethtool_pauseparam*); 345 void (*self_test)(struct net_device *, struct ethtool_test *, u64 *); 346 void (*get_strings)(struct net_device *, u32 stringset, u8 *); 347 int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state); 348 void (*get_ethtool_stats)(struct net_device *, 349 struct ethtool_stats *, u64 *); 350 int (*begin)(struct net_device *); 351 void (*complete)(struct net_device *); 352 u32 (*get_priv_flags)(struct net_device *); 353 int (*set_priv_flags)(struct net_device *, u32); 354 int (*get_sset_count)(struct net_device *, int); 355 int (*get_rxnfc)(struct net_device *, 356 struct ethtool_rxnfc *, u32 *rule_locs); 357 int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *); 358 int (*flash_device)(struct net_device *, struct ethtool_flash *); 359 int (*reset)(struct net_device *, u32 *); 360 u32 (*get_rxfh_key_size)(struct net_device *); 361 u32 (*get_rxfh_indir_size)(struct net_device *); 362 int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key, 363 u8 *hfunc); 364 int (*set_rxfh)(struct net_device *, const u32 *indir, 365 const u8 *key, const u8 hfunc); 366 int (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key, 367 u8 *hfunc, u32 rss_context); 368 int (*set_rxfh_context)(struct net_device *, const u32 *indir, 369 const u8 *key, const u8 hfunc, 370 u32 *rss_context, bool delete); 371 void (*get_channels)(struct net_device *, struct ethtool_channels *); 372 int (*set_channels)(struct net_device *, struct ethtool_channels *); 373 int (*get_dump_flag)(struct net_device *, struct ethtool_dump *); 374 int (*get_dump_data)(struct net_device *, 375 struct ethtool_dump *, void *); 376 int (*set_dump)(struct net_device *, struct ethtool_dump *); 377 int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *); 378 int (*get_module_info)(struct net_device *, 379 struct ethtool_modinfo *); 380 int (*get_module_eeprom)(struct net_device *, 381 struct ethtool_eeprom *, u8 *); 382 int (*get_eee)(struct net_device *, struct ethtool_eee *); 383 int (*set_eee)(struct net_device *, struct ethtool_eee *); 384 int (*get_tunable)(struct net_device *, 385 const struct ethtool_tunable *, void *); 386 int (*set_tunable)(struct net_device *, 387 const struct ethtool_tunable *, const void *); 388 int (*get_per_queue_coalesce)(struct net_device *, u32, 389 struct ethtool_coalesce *); 390 int (*set_per_queue_coalesce)(struct net_device *, u32, 391 struct ethtool_coalesce *); 392 int (*get_link_ksettings)(struct net_device *, 393 struct ethtool_link_ksettings *); 394 int (*set_link_ksettings)(struct net_device *, 395 const struct ethtool_link_ksettings *); 396 int (*get_fecparam)(struct net_device *, 397 struct ethtool_fecparam *); 398 int (*set_fecparam)(struct net_device *, 399 struct ethtool_fecparam *); 400 void (*get_ethtool_phy_stats)(struct net_device *, 401 struct ethtool_stats *, u64 *); 402 }; 403 #endif /* _LINUX_ETHTOOL_H */ 404