include/linux/ethtool.h

   1 /*
   2  * ethtool.h: Defines for Linux ethtool.
   3  *
   4  * Copyright (C) 1998 David S. Miller (davem@redhat.com)
   5  * Copyright 2001 Jeff Garzik <jgarzik@pobox.com>
   6  * Portions Copyright 2001 Sun Microsystems (thockin@sun.com)
   7  * Portions Copyright 2002 Intel (eli.kupermann@intel.com,
   8  *                                christopher.leech@intel.com,
   9  *                                scott.feldman@intel.com)
  10  * Portions Copyright (C) Sun Microsystems 2008
  11  */
  12 #ifndef _LINUX_ETHTOOL_H
  13 #define _LINUX_ETHTOOL_H
  14
  15 #include <linux/bitmap.h>
  16 #include <linux/compat.h>
  17 #include <uapi/linux/ethtool.h>
  18
  19 #ifdef CONFIG_COMPAT
  20
  21 struct compat_ethtool_rx_flow_spec {
  22         u32             flow_type;
  23         union ethtool_flow_union h_u;
  24         struct ethtool_flow_ext h_ext;
  25         union ethtool_flow_union m_u;
  26         struct ethtool_flow_ext m_ext;
  27         compat_u64      ring_cookie;
  28         u32             location;
  29 };
  30
  31 struct compat_ethtool_rxnfc {
  32         u32                             cmd;
  33         u32                             flow_type;
  34         compat_u64                      data;
  35         struct compat_ethtool_rx_flow_spec fs;
  36         u32                             rule_cnt;
  37         u32                             rule_locs[0];
  38 };
  39
  40 #endif /* CONFIG_COMPAT */
  41
  42 #include <linux/rculist.h>
  43
  44 /**
  45  * enum ethtool_phys_id_state - indicator state for physical identification
  46  * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
  47  * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
  48  * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
  49  *      is not supported)
  50  * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
  51  *      is not supported)
  52  */
  53 enum ethtool_phys_id_state {
  54         ETHTOOL_ID_INACTIVE,
  55         ETHTOOL_ID_ACTIVE,
  56         ETHTOOL_ID_ON,
  57         ETHTOOL_ID_OFF
  58 };
  59
  60 enum {
  61         ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
  62         ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
  63         ETH_RSS_HASH_CRC32_BIT, /* Configurable RSS hash function - Crc32 */
  64
  65         /*
  66          * Add your fresh new hash function bits above and remember to update
  67          * rss_hash_func_strings[] in ethtool.c
  68          */
  69         ETH_RSS_HASH_FUNCS_COUNT
  70 };
  71
  72 #define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))
  73 #define __ETH_RSS_HASH(name)    __ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
  74
  75 #define ETH_RSS_HASH_TOP        __ETH_RSS_HASH(TOP)
  76 #define ETH_RSS_HASH_XOR        __ETH_RSS_HASH(XOR)
  77 #define ETH_RSS_HASH_CRC32      __ETH_RSS_HASH(CRC32)
  78
  79 #define ETH_RSS_HASH_UNKNOWN    0
  80 #define ETH_RSS_HASH_NO_CHANGE  0
  81
  82 struct net_device;
  83
  84 /* Some generic methods drivers may use in their ethtool_ops */
  85 u32 ethtool_op_get_link(struct net_device *dev);
  86 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
  87
  88 /**
  89  * ethtool_rxfh_indir_default - get default value for RX flow hash indirection
  90  * @index: Index in RX flow hash indirection table
  91  * @n_rx_rings: Number of RX rings to use
  92  *
  93  * This function provides the default policy for RX flow hash indirection.
  94  */
  95 static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
  96 {
  97         return index % n_rx_rings;
  98 }
  99
 100 /* number of link mode bits/ulongs handled internally by kernel */
 101 #define __ETHTOOL_LINK_MODE_MASK_NBITS                  \
 102         (__ETHTOOL_LINK_MODE_LAST + 1)
 103
 104 /* declare a link mode bitmap */
 105 #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name)          \
 106         DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
 107
 108 /* drivers must ignore base.cmd and base.link_mode_masks_nwords
 109  * fields, but they are allowed to overwrite them (will be ignored).
 110  */
 111 struct ethtool_link_ksettings {
 112         struct ethtool_link_settings base;
 113         struct {
 114                 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
 115                 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
 116                 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
 117         } link_modes;
 118 };
 119
 120 /**
 121  * ethtool_link_ksettings_zero_link_mode - clear link_ksettings link mode mask
 122  *   @ptr : pointer to struct ethtool_link_ksettings
 123  *   @name : one of supported/advertising/lp_advertising
 124  */
 125 #define ethtool_link_ksettings_zero_link_mode(ptr, name)                \
 126         bitmap_zero((ptr)->link_modes.name, __ETHTOOL_LINK_MODE_MASK_NBITS)
 127
 128 /**
 129  * ethtool_link_ksettings_add_link_mode - set bit in link_ksettings
 130  * link mode mask
 131  *   @ptr : pointer to struct ethtool_link_ksettings
 132  *   @name : one of supported/advertising/lp_advertising
 133  *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
 134  * (not atomic, no bound checking)
 135  */
 136 #define ethtool_link_ksettings_add_link_mode(ptr, name, mode)           \
 137         __set_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
 138
 139 /**
 140  * ethtool_link_ksettings_test_link_mode - test bit in ksettings link mode mask
 141  *   @ptr : pointer to struct ethtool_link_ksettings
 142  *   @name : one of supported/advertising/lp_advertising
 143  *   @mode : one of the ETHTOOL_LINK_MODE_*_BIT
 144  * (not atomic, no bound checking)
 145  *
 146  * Returns true/false.
 147  */
 148 #define ethtool_link_ksettings_test_link_mode(ptr, name, mode)          \
 149         test_bit(ETHTOOL_LINK_MODE_ ## mode ## _BIT, (ptr)->link_modes.name)
 150
 151 extern int
 152 __ethtool_get_link_ksettings(struct net_device *dev,
 153                              struct ethtool_link_ksettings *link_ksettings);
 154
 155 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
 156                                              u32 legacy_u32);
 157
 158 /* return false if src had higher bits set. lower bits always updated. */
 159 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
 160                                      const unsigned long *src);
 161
 162 /**
 163  * struct ethtool_ops - optional netdev operations
 164  * @get_settings: DEPRECATED, use %get_link_ksettings/%set_link_ksettings
 165  *      API. Get various device settings including Ethernet link
 166  *      settings. The @cmd parameter is expected to have been cleared
 167  *      before get_settings is called. Returns a negative error code
 168  *      or zero.
 169  * @set_settings: DEPRECATED, use %get_link_ksettings/%set_link_ksettings
 170  *      API. Set various device settings including Ethernet link
 171  *      settings.  Returns a negative error code or zero.
 172  * @get_drvinfo: Report driver/device information.  Should only set the
 173  *      @driver, @version, @fw_version and @bus_info fields.  If not
 174  *      implemented, the @driver and @bus_info fields will be filled in
 175  *      according to the netdev's parent device.
 176  * @get_regs_len: Get buffer length required for @get_regs
 177  * @get_regs: Get device registers
 178  * @get_wol: Report whether Wake-on-Lan is enabled
 179  * @set_wol: Turn Wake-on-Lan on or off.  Returns a negative error code
 180  *      or zero.
 181  * @get_msglevel: Report driver message level.  This should be the value
 182  *      of the @msg_enable field used by netif logging functions.
 183  * @set_msglevel: Set driver message level
 184  * @nway_reset: Restart autonegotiation.  Returns a negative error code
 185  *      or zero.
 186  * @get_link: Report whether physical link is up.  Will only be called if
 187  *      the netdev is up.  Should usually be set to ethtool_op_get_link(),
 188  *      which uses netif_carrier_ok().
 189  * @get_eeprom: Read data from the device EEPROM.
 190  *      Should fill in the magic field.  Don't need to check len for zero
 191  *      or wraparound.  Fill in the data argument with the eeprom values
 192  *      from offset to offset + len.  Update len to the amount read.
 193  *      Returns an error or zero.
 194  * @set_eeprom: Write data to the device EEPROM.
 195  *      Should validate the magic field.  Don't need to check len for zero
 196  *      or wraparound.  Update len to the amount written.  Returns an error
 197  *      or zero.
 198  * @get_coalesce: Get interrupt coalescing parameters.  Returns a negative
 199  *      error code or zero.
 200  * @set_coalesce: Set interrupt coalescing parameters.  Returns a negative
 201  *      error code or zero.
 202  * @get_ringparam: Report ring sizes
 203  * @set_ringparam: Set ring sizes.  Returns a negative error code or zero.
 204  * @get_pauseparam: Report pause parameters
 205  * @set_pauseparam: Set pause parameters.  Returns a negative error code
 206  *      or zero.
 207  * @self_test: Run specified self-tests
 208  * @get_strings: Return a set of strings that describe the requested objects
 209  * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
 210  *      attached to it.  The implementation may update the indicator
 211  *      asynchronously or synchronously, but in either case it must return
 212  *      quickly.  It is initially called with the argument %ETHTOOL_ID_ACTIVE,
 213  *      and must either activate asynchronous updates and return zero, return
 214  *      a negative error or return a positive frequency for synchronous
 215  *      indication (e.g. 1 for one on/off cycle per second).  If it returns
 216  *      a frequency then it will be called again at intervals with the
 217  *      argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
 218  *      the indicator accordingly.  Finally, it is called with the argument
 219  *      %ETHTOOL_ID_INACTIVE and must deactivate the indicator.  Returns a
 220  *      negative error code or zero.
 221  * @get_ethtool_stats: Return extended statistics about the device.
 222  *      This is only useful if the device maintains statistics not
 223  *      included in &struct rtnl_link_stats64.
 224  * @begin: Function to be called before any other operation.  Returns a
 225  *      negative error code or zero.
 226  * @complete: Function to be called after any other operation except
 227  *      @begin.  Will be called even if the other operation failed.
 228  * @get_priv_flags: Report driver-specific feature flags.
 229  * @set_priv_flags: Set driver-specific feature flags.  Returns a negative
 230  *      error code or zero.
 231  * @get_sset_count: Get number of strings that @get_strings will write.
 232  * @get_rxnfc: Get RX flow classification rules.  Returns a negative
 233  *      error code or zero.
 234  * @set_rxnfc: Set RX flow classification rules.  Returns a negative
 235  *      error code or zero.
 236  * @flash_device: Write a firmware image to device's flash memory.
 237  *      Returns a negative error code or zero.
 238  * @reset: Reset (part of) the device, as specified by a bitmask of
 239  *      flags from &enum ethtool_reset_flags.  Returns a negative
 240  *      error code or zero.
 241  * @get_rxfh_key_size: Get the size of the RX flow hash key.
 242  *      Returns zero if not supported for this specific device.
 243  * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
 244  *      Returns zero if not supported for this specific device.
 245  * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
 246  *      and/or hash function.
 247  *      Returns a negative error code or zero.
 248  * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
 249  *      key, and/or hash function.  Arguments which are set to %NULL or zero
 250  *      will remain unchanged.
 251  *      Returns a negative error code or zero. An error code must be returned
 252  *      if at least one unsupported change was requested.
 253  * @get_channels: Get number of channels.
 254  * @set_channels: Set number of channels.  Returns a negative error code or
 255  *      zero.
 256  * @get_dump_flag: Get dump flag indicating current dump length, version,
 257  *                 and flag of the device.
 258  * @get_dump_data: Get dump data.
 259  * @set_dump: Set dump specific flags to the device.
 260  * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
 261  *      Drivers supporting transmit time stamps in software should set this to
 262  *      ethtool_op_get_ts_info().
 263  * @get_module_info: Get the size and type of the eeprom contained within
 264  *      a plug-in module.
 265  * @get_module_eeprom: Get the eeprom information from the plug-in module
 266  * @get_eee: Get Energy-Efficient (EEE) supported and status.
 267  * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
 268  * @get_per_queue_coalesce: Get interrupt coalescing parameters per queue.
 269  *      It must check that the given queue number is valid. If neither a RX nor
 270  *      a TX queue has this number, return -EINVAL. If only a RX queue or a TX
 271  *      queue has this number, set the inapplicable fields to ~0 and return 0.
 272  *      Returns a negative error code or zero.
 273  * @set_per_queue_coalesce: Set interrupt coalescing parameters per queue.
 274  *      It must check that the given queue number is valid. If neither a RX nor
 275  *      a TX queue has this number, return -EINVAL. If only a RX queue or a TX
 276  *      queue has this number, ignore the inapplicable fields.
 277  *      Returns a negative error code or zero.
 278  * @get_link_ksettings: When defined, takes precedence over the
 279  *      %get_settings method. Get various device settings
 280  *      including Ethernet link settings. The %cmd and
 281  *      %link_mode_masks_nwords fields should be ignored (use
 282  *      %__ETHTOOL_LINK_MODE_MASK_NBITS instead of the latter), any
 283  *      change to them will be overwritten by kernel. Returns a
 284  *      negative error code or zero.
 285  * @set_link_ksettings: When defined, takes precedence over the
 286  *      %set_settings method. Set various device settings including
 287  *      Ethernet link settings. The %cmd and %link_mode_masks_nwords
 288  *      fields should be ignored (use %__ETHTOOL_LINK_MODE_MASK_NBITS
 289  *      instead of the latter), any change to them will be overwritten
 290  *      by kernel. Returns a negative error code or zero.
 291  *
 292  * All operations are optional (i.e. the function pointer may be set
 293  * to %NULL) and callers must take this into account.  Callers must
 294  * hold the RTNL lock.
 295  *
 296  * See the structures used by these operations for further documentation.
 297  * Note that for all operations using a structure ending with a zero-
 298  * length array, the array is allocated separately in the kernel and
 299  * is passed to the driver as an additional parameter.
 300  *
 301  * See &struct net_device and &struct net_device_ops for documentation
 302  * of the generic netdev features interface.
 303  */
 304 struct ethtool_ops {
 305         int     (*get_settings)(struct net_device *, struct ethtool_cmd *);
 306         int     (*set_settings)(struct net_device *, struct ethtool_cmd *);
 307         void    (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
 308         int     (*get_regs_len)(struct net_device *);
 309         void    (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
 310         void    (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
 311         int     (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
 312         u32     (*get_msglevel)(struct net_device *);
 313         void    (*set_msglevel)(struct net_device *, u32);
 314         int     (*nway_reset)(struct net_device *);
 315         u32     (*get_link)(struct net_device *);
 316         int     (*get_eeprom_len)(struct net_device *);
 317         int     (*get_eeprom)(struct net_device *,
 318                               struct ethtool_eeprom *, u8 *);
 319         int     (*set_eeprom)(struct net_device *,
 320                               struct ethtool_eeprom *, u8 *);
 321         int     (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
 322         int     (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
 323         void    (*get_ringparam)(struct net_device *,
 324                                  struct ethtool_ringparam *);
 325         int     (*set_ringparam)(struct net_device *,
 326                                  struct ethtool_ringparam *);
 327         void    (*get_pauseparam)(struct net_device *,
 328                                   struct ethtool_pauseparam*);
 329         int     (*set_pauseparam)(struct net_device *,
 330                                   struct ethtool_pauseparam*);
 331         void    (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
 332         void    (*get_strings)(struct net_device *, u32 stringset, u8 *);
 333         int     (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
 334         void    (*get_ethtool_stats)(struct net_device *,
 335                                      struct ethtool_stats *, u64 *);
 336         int     (*begin)(struct net_device *);
 337         void    (*complete)(struct net_device *);
 338         u32     (*get_priv_flags)(struct net_device *);
 339         int     (*set_priv_flags)(struct net_device *, u32);
 340         int     (*get_sset_count)(struct net_device *, int);
 341         int     (*get_rxnfc)(struct net_device *,
 342                              struct ethtool_rxnfc *, u32 *rule_locs);
 343         int     (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
 344         int     (*flash_device)(struct net_device *, struct ethtool_flash *);
 345         int     (*reset)(struct net_device *, u32 *);
 346         u32     (*get_rxfh_key_size)(struct net_device *);
 347         u32     (*get_rxfh_indir_size)(struct net_device *);
 348         int     (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
 349                             u8 *hfunc);
 350         int     (*set_rxfh)(struct net_device *, const u32 *indir,
 351                             const u8 *key, const u8 hfunc);
 352         void    (*get_channels)(struct net_device *, struct ethtool_channels *);
 353         int     (*set_channels)(struct net_device *, struct ethtool_channels *);
 354         int     (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
 355         int     (*get_dump_data)(struct net_device *,
 356                                  struct ethtool_dump *, void *);
 357         int     (*set_dump)(struct net_device *, struct ethtool_dump *);
 358         int     (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
 359         int     (*get_module_info)(struct net_device *,
 360                                    struct ethtool_modinfo *);
 361         int     (*get_module_eeprom)(struct net_device *,
 362                                      struct ethtool_eeprom *, u8 *);
 363         int     (*get_eee)(struct net_device *, struct ethtool_eee *);
 364         int     (*set_eee)(struct net_device *, struct ethtool_eee *);
 365         int     (*get_tunable)(struct net_device *,
 366                                const struct ethtool_tunable *, void *);
 367         int     (*set_tunable)(struct net_device *,
 368                                const struct ethtool_tunable *, const void *);
 369         int     (*get_per_queue_coalesce)(struct net_device *, u32,
 370                                           struct ethtool_coalesce *);
 371         int     (*set_per_queue_coalesce)(struct net_device *, u32,
 372                                           struct ethtool_coalesce *);
 373         int     (*get_link_ksettings)(struct net_device *,
 374                                       struct ethtool_link_ksettings *);
 375         int     (*set_link_ksettings)(struct net_device *,
 376                                       const struct ethtool_link_ksettings *);
 377 };
 378 #endif /* _LINUX_ETHTOOL_H */