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/compat.h>
  16 #include <uapi/linux/ethtool.h>
  17
  18 #ifdef CONFIG_COMPAT
  19
  20 struct compat_ethtool_rx_flow_spec {
  21         u32             flow_type;
  22         union ethtool_flow_union h_u;
  23         struct ethtool_flow_ext h_ext;
  24         union ethtool_flow_union m_u;
  25         struct ethtool_flow_ext m_ext;
  26         compat_u64      ring_cookie;
  27         u32             location;
  28 };
  29
  30 struct compat_ethtool_rxnfc {
  31         u32                             cmd;
  32         u32                             flow_type;
  33         compat_u64                      data;
  34         struct compat_ethtool_rx_flow_spec fs;
  35         u32                             rule_cnt;
  36         u32                             rule_locs[0];
  37 };
  38
  39 #endif /* CONFIG_COMPAT */
  40
  41 #include <linux/rculist.h>
  42
  43 extern int __ethtool_get_settings(struct net_device *dev,
  44                                   struct ethtool_cmd *cmd);
  45
  46 /**
  47  * enum ethtool_phys_id_state - indicator state for physical identification
  48  * @ETHTOOL_ID_INACTIVE: Physical ID indicator should be deactivated
  49  * @ETHTOOL_ID_ACTIVE: Physical ID indicator should be activated
  50  * @ETHTOOL_ID_ON: LED should be turned on (used iff %ETHTOOL_ID_ACTIVE
  51  *      is not supported)
  52  * @ETHTOOL_ID_OFF: LED should be turned off (used iff %ETHTOOL_ID_ACTIVE
  53  *      is not supported)
  54  */
  55 enum ethtool_phys_id_state {
  56         ETHTOOL_ID_INACTIVE,
  57         ETHTOOL_ID_ACTIVE,
  58         ETHTOOL_ID_ON,
  59         ETHTOOL_ID_OFF
  60 };
  61
  62 enum {
  63         ETH_RSS_HASH_TOP_BIT, /* Configurable RSS hash function - Toeplitz */
  64         ETH_RSS_HASH_XOR_BIT, /* Configurable RSS hash function - Xor */
  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
  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 /**
 101  * struct ethtool_ops - optional netdev operations
 102  * @get_settings: Get various device settings including Ethernet link
 103  *      settings. The @cmd parameter is expected to have been cleared
 104  *      before get_settings is called. Returns a negative error code or
 105  *      zero.
 106  * @set_settings: Set various device settings including Ethernet link
 107  *      settings.  Returns a negative error code or zero.
 108  * @get_drvinfo: Report driver/device information.  Should only set the
 109  *      @driver, @version, @fw_version and @bus_info fields.  If not
 110  *      implemented, the @driver and @bus_info fields will be filled in
 111  *      according to the netdev's parent device.
 112  * @get_regs_len: Get buffer length required for @get_regs
 113  * @get_regs: Get device registers
 114  * @get_wol: Report whether Wake-on-Lan is enabled
 115  * @set_wol: Turn Wake-on-Lan on or off.  Returns a negative error code
 116  *      or zero.
 117  * @get_msglevel: Report driver message level.  This should be the value
 118  *      of the @msg_enable field used by netif logging functions.
 119  * @set_msglevel: Set driver message level
 120  * @nway_reset: Restart autonegotiation.  Returns a negative error code
 121  *      or zero.
 122  * @get_link: Report whether physical link is up.  Will only be called if
 123  *      the netdev is up.  Should usually be set to ethtool_op_get_link(),
 124  *      which uses netif_carrier_ok().
 125  * @get_eeprom: Read data from the device EEPROM.
 126  *      Should fill in the magic field.  Don't need to check len for zero
 127  *      or wraparound.  Fill in the data argument with the eeprom values
 128  *      from offset to offset + len.  Update len to the amount read.
 129  *      Returns an error or zero.
 130  * @set_eeprom: Write data to the device EEPROM.
 131  *      Should validate the magic field.  Don't need to check len for zero
 132  *      or wraparound.  Update len to the amount written.  Returns an error
 133  *      or zero.
 134  * @get_coalesce: Get interrupt coalescing parameters.  Returns a negative
 135  *      error code or zero.
 136  * @set_coalesce: Set interrupt coalescing parameters.  Returns a negative
 137  *      error code or zero.
 138  * @get_ringparam: Report ring sizes
 139  * @set_ringparam: Set ring sizes.  Returns a negative error code or zero.
 140  * @get_pauseparam: Report pause parameters
 141  * @set_pauseparam: Set pause parameters.  Returns a negative error code
 142  *      or zero.
 143  * @self_test: Run specified self-tests
 144  * @get_strings: Return a set of strings that describe the requested objects
 145  * @set_phys_id: Identify the physical devices, e.g. by flashing an LED
 146  *      attached to it.  The implementation may update the indicator
 147  *      asynchronously or synchronously, but in either case it must return
 148  *      quickly.  It is initially called with the argument %ETHTOOL_ID_ACTIVE,
 149  *      and must either activate asynchronous updates and return zero, return
 150  *      a negative error or return a positive frequency for synchronous
 151  *      indication (e.g. 1 for one on/off cycle per second).  If it returns
 152  *      a frequency then it will be called again at intervals with the
 153  *      argument %ETHTOOL_ID_ON or %ETHTOOL_ID_OFF and should set the state of
 154  *      the indicator accordingly.  Finally, it is called with the argument
 155  *      %ETHTOOL_ID_INACTIVE and must deactivate the indicator.  Returns a
 156  *      negative error code or zero.
 157  * @get_ethtool_stats: Return extended statistics about the device.
 158  *      This is only useful if the device maintains statistics not
 159  *      included in &struct rtnl_link_stats64.
 160  * @begin: Function to be called before any other operation.  Returns a
 161  *      negative error code or zero.
 162  * @complete: Function to be called after any other operation except
 163  *      @begin.  Will be called even if the other operation failed.
 164  * @get_priv_flags: Report driver-specific feature flags.
 165  * @set_priv_flags: Set driver-specific feature flags.  Returns a negative
 166  *      error code or zero.
 167  * @get_sset_count: Get number of strings that @get_strings will write.
 168  * @get_rxnfc: Get RX flow classification rules.  Returns a negative
 169  *      error code or zero.
 170  * @set_rxnfc: Set RX flow classification rules.  Returns a negative
 171  *      error code or zero.
 172  * @flash_device: Write a firmware image to device's flash memory.
 173  *      Returns a negative error code or zero.
 174  * @reset: Reset (part of) the device, as specified by a bitmask of
 175  *      flags from &enum ethtool_reset_flags.  Returns a negative
 176  *      error code or zero.
 177  * @get_rxfh_key_size: Get the size of the RX flow hash key.
 178  *      Returns zero if not supported for this specific device.
 179  * @get_rxfh_indir_size: Get the size of the RX flow hash indirection table.
 180  *      Returns zero if not supported for this specific device.
 181  * @get_rxfh: Get the contents of the RX flow hash indirection table, hash key
 182  *      and/or hash function.
 183  *      Returns a negative error code or zero.
 184  * @set_rxfh: Set the contents of the RX flow hash indirection table, hash
 185  *      key, and/or hash function.  Arguments which are set to %NULL or zero
 186  *      will remain unchanged.
 187  *      Returns a negative error code or zero. An error code must be returned
 188  *      if at least one unsupported change was requested.
 189  * @get_channels: Get number of channels.
 190  * @set_channels: Set number of channels.  Returns a negative error code or
 191  *      zero.
 192  * @get_dump_flag: Get dump flag indicating current dump length, version,
 193  *                 and flag of the device.
 194  * @get_dump_data: Get dump data.
 195  * @set_dump: Set dump specific flags to the device.
 196  * @get_ts_info: Get the time stamping and PTP hardware clock capabilities.
 197  *      Drivers supporting transmit time stamps in software should set this to
 198  *      ethtool_op_get_ts_info().
 199  * @get_module_info: Get the size and type of the eeprom contained within
 200  *      a plug-in module.
 201  * @get_module_eeprom: Get the eeprom information from the plug-in module
 202  * @get_eee: Get Energy-Efficient (EEE) supported and status.
 203  * @set_eee: Set EEE status (enable/disable) as well as LPI timers.
 204  *
 205  * All operations are optional (i.e. the function pointer may be set
 206  * to %NULL) and callers must take this into account.  Callers must
 207  * hold the RTNL lock.
 208  *
 209  * See the structures used by these operations for further documentation.
 210  * Note that for all operations using a structure ending with a zero-
 211  * length array, the array is allocated separately in the kernel and
 212  * is passed to the driver as an additional parameter.
 213  *
 214  * See &struct net_device and &struct net_device_ops for documentation
 215  * of the generic netdev features interface.
 216  */
 217 struct ethtool_ops {
 218         int     (*get_settings)(struct net_device *, struct ethtool_cmd *);
 219         int     (*set_settings)(struct net_device *, struct ethtool_cmd *);
 220         void    (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
 221         int     (*get_regs_len)(struct net_device *);
 222         void    (*get_regs)(struct net_device *, struct ethtool_regs *, void *);
 223         void    (*get_wol)(struct net_device *, struct ethtool_wolinfo *);
 224         int     (*set_wol)(struct net_device *, struct ethtool_wolinfo *);
 225         u32     (*get_msglevel)(struct net_device *);
 226         void    (*set_msglevel)(struct net_device *, u32);
 227         int     (*nway_reset)(struct net_device *);
 228         u32     (*get_link)(struct net_device *);
 229         int     (*get_eeprom_len)(struct net_device *);
 230         int     (*get_eeprom)(struct net_device *,
 231                               struct ethtool_eeprom *, u8 *);
 232         int     (*set_eeprom)(struct net_device *,
 233                               struct ethtool_eeprom *, u8 *);
 234         int     (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);
 235         int     (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);
 236         void    (*get_ringparam)(struct net_device *,
 237                                  struct ethtool_ringparam *);
 238         int     (*set_ringparam)(struct net_device *,
 239                                  struct ethtool_ringparam *);
 240         void    (*get_pauseparam)(struct net_device *,
 241                                   struct ethtool_pauseparam*);
 242         int     (*set_pauseparam)(struct net_device *,
 243                                   struct ethtool_pauseparam*);
 244         void    (*self_test)(struct net_device *, struct ethtool_test *, u64 *);
 245         void    (*get_strings)(struct net_device *, u32 stringset, u8 *);
 246         int     (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);
 247         void    (*get_ethtool_stats)(struct net_device *,
 248                                      struct ethtool_stats *, u64 *);
 249         int     (*begin)(struct net_device *);
 250         void    (*complete)(struct net_device *);
 251         u32     (*get_priv_flags)(struct net_device *);
 252         int     (*set_priv_flags)(struct net_device *, u32);
 253         int     (*get_sset_count)(struct net_device *, int);
 254         int     (*get_rxnfc)(struct net_device *,
 255                              struct ethtool_rxnfc *, u32 *rule_locs);
 256         int     (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);
 257         int     (*flash_device)(struct net_device *, struct ethtool_flash *);
 258         int     (*reset)(struct net_device *, u32 *);
 259         u32     (*get_rxfh_key_size)(struct net_device *);
 260         u32     (*get_rxfh_indir_size)(struct net_device *);
 261         int     (*get_rxfh)(struct net_device *, u32 *indir, u8 *key,
 262                             u8 *hfunc);
 263         int     (*set_rxfh)(struct net_device *, const u32 *indir,
 264                             const u8 *key, const u8 hfunc);
 265         void    (*get_channels)(struct net_device *, struct ethtool_channels *);
 266         int     (*set_channels)(struct net_device *, struct ethtool_channels *);
 267         int     (*get_dump_flag)(struct net_device *, struct ethtool_dump *);
 268         int     (*get_dump_data)(struct net_device *,
 269                                  struct ethtool_dump *, void *);
 270         int     (*set_dump)(struct net_device *, struct ethtool_dump *);
 271         int     (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);
 272         int     (*get_module_info)(struct net_device *,
 273                                    struct ethtool_modinfo *);
 274         int     (*get_module_eeprom)(struct net_device *,
 275                                      struct ethtool_eeprom *, u8 *);
 276         int     (*get_eee)(struct net_device *, struct ethtool_eee *);
 277         int     (*set_eee)(struct net_device *, struct ethtool_eee *);
 278         int     (*get_tunable)(struct net_device *,
 279                                const struct ethtool_tunable *, void *);
 280         int     (*set_tunable)(struct net_device *,
 281                                const struct ethtool_tunable *, const void *);
 282
 283
 284 };
 285 #endif /* _LINUX_ETHTOOL_H */