| ============================= |
| Netlink interface for ethtool |
| ============================= |
| |
| |
| Basic information |
| ================= |
| |
| Netlink interface for ethtool uses generic netlink family ``ethtool`` |
| (userspace application should use macros ``ETHTOOL_GENL_NAME`` and |
| ``ETHTOOL_GENL_VERSION`` defined in ``<linux/ethtool_netlink.h>`` uapi |
| header). This family does not use a specific header, all information in |
| requests and replies is passed using netlink attributes. |
| |
| The ethtool netlink interface uses extended ACK for error and warning |
| reporting, userspace application developers are encouraged to make these |
| messages available to user in a suitable way. |
| |
| Requests can be divided into three categories: "get" (retrieving information), |
| "set" (setting parameters) and "action" (invoking an action). |
| |
| All "set" and "action" type requests require admin privileges |
| (``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for |
| anyone but there are exceptions (where the response contains sensitive |
| information). In some cases, the request as such is allowed for anyone but |
| unprivileged users have attributes with sensitive information (e.g. |
| wake-on-lan password) omitted. |
| |
| |
| Conventions |
| =========== |
| |
| Attributes which represent a boolean value usually use NLA_U8 type so that we |
| can distinguish three states: "on", "off" and "not present" (meaning the |
| information is not available in "get" requests or value is not to be changed |
| in "set" requests). For these attributes, the "true" value should be passed as |
| number 1 but any non-zero value should be understood as "true" by recipient. |
| In the tables below, "bool" denotes NLA_U8 attributes interpreted in this way. |
| |
| In the message structure descriptions below, if an attribute name is suffixed |
| with "+", parent nest can contain multiple attributes of the same type. This |
| implements an array of entries. |
| |
| |
| Request header |
| ============== |
| |
| Each request or reply message contains a nested attribute with common header. |
| Structure of this header is |
| |
| ============================== ====== ============================= |
| ``ETHTOOL_A_HEADER_DEV_INDEX`` u32 device ifindex |
| ``ETHTOOL_A_HEADER_DEV_NAME`` string device name |
| ``ETHTOOL_A_HEADER_FLAGS`` u32 flags common for all requests |
| ============================== ====== ============================= |
| |
| ``ETHTOOL_A_HEADER_DEV_INDEX`` and ``ETHTOOL_A_HEADER_DEV_NAME`` identify the |
| device message relates to. One of them is sufficient in requests, if both are |
| used, they must identify the same device. Some requests, e.g. global string |
| sets, do not require device identification. Most ``GET`` requests also allow |
| dump requests without device identification to query the same information for |
| all devices providing it (each device in a separate message). |
| |
| ``ETHTOOL_A_HEADER_FLAGS`` is a bitmap of request flags common for all request |
| types. The interpretation of these flags is the same for all request types but |
| the flags may not apply to requests. Recognized flags are: |
| |
| ================================= =================================== |
| ``ETHTOOL_FLAG_COMPACT_BITSETS`` use compact format bitsets in reply |
| ``ETHTOOL_FLAG_OMIT_REPLY`` omit optional reply (_SET and _ACT) |
| ``ETHTOOL_FLAG_STATS`` include optional device statistics |
| ================================= =================================== |
| |
| New request flags should follow the general idea that if the flag is not set, |
| the behaviour is backward compatible, i.e. requests from old clients not aware |
| of the flag should be interpreted the way the client expects. A client must |
| not set flags it does not understand. |
| |
| |
| Bit sets |
| ======== |
| |
| For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32`` |
| type is used. For arbitrary length bitmaps, ethtool netlink uses a nested |
| attribute with contents of one of two forms: compact (two binary bitmaps |
| representing bit values and mask of affected bits) and bit-by-bit (list of |
| bits identified by either index or name). |
| |
| Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together |
| with their values which saves a round trip (when the bitset is passed in a |
| request) or at least a second request (when the bitset is in a reply). This is |
| useful for one shot applications like traditional ethtool command. On the |
| other hand, long running applications like ethtool monitor (displaying |
| notifications) or network management daemons may prefer fetching the names |
| only once and using compact form to save message size. Notifications from |
| ethtool netlink interface always use compact form for bitsets. |
| |
| A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK`` |
| not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests |
| modifying a bitmap, the former changes the bit set in mask to values set in |
| value and preserves the rest; the latter sets the bits set in the bitmap and |
| clears the rest. |
| |
| Compact form: nested (bitset) atrribute contents: |
| |
| ============================ ====== ============================ |
| ``ETHTOOL_A_BITSET_NOMASK`` flag no mask, only a list |
| ``ETHTOOL_A_BITSET_SIZE`` u32 number of significant bits |
| ``ETHTOOL_A_BITSET_VALUE`` binary bitmap of bit values |
| ``ETHTOOL_A_BITSET_MASK`` binary bitmap of valid bits |
| ============================ ====== ============================ |
| |
| Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits |
| rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte |
| order, words ordered from least significant to most significant (i.e. the same |
| way as bitmaps are passed with ioctl interface). |
| |
| For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are |
| mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if |
| ``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair); |
| if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not |
| allowed (bitset represents a single bitmap. |
| |
| Kernel bit set length may differ from userspace length if older application is |
| used on newer kernel or vice versa. If userspace bitmap is longer, an error is |
| issued only if the request actually tries to set values of some bits not |
| recognized by kernel. |
| |
| Bit-by-bit form: nested (bitset) attribute contents: |
| |
| +------------------------------------+--------+-----------------------------+ |
| | ``ETHTOOL_A_BITSET_NOMASK`` | flag | no mask, only a list | |
| +------------------------------------+--------+-----------------------------+ |
| | ``ETHTOOL_A_BITSET_SIZE`` | u32 | number of significant bits | |
| +------------------------------------+--------+-----------------------------+ |
| | ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits | |
| +-+----------------------------------+--------+-----------------------------+ |
| | | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit | |
| +-+-+--------------------------------+--------+-----------------------------+ |
| | | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32 | bit index (0 for LSB) | |
| +-+-+--------------------------------+--------+-----------------------------+ |
| | | | ``ETHTOOL_A_BITSET_BIT_NAME`` | string | bit name | |
| +-+-+--------------------------------+--------+-----------------------------+ |
| | | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag | present if bit is set | |
| +-+-+--------------------------------+--------+-----------------------------+ |
| |
| Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can |
| only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an |
| arbitrary number of them. A bit may be identified by its index or by its |
| name. When used in requests, listed bits are set to 0 or 1 according to |
| ``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if |
| index exceeds kernel bit length or if name is not recognized. |
| |
| When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as |
| a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in |
| such case. Such bitset represents a bitmap with listed bits set and the rest |
| zero. |
| |
| In requests, application can use either form. Form used by kernel in reply is |
| determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request |
| header. Semantics of value and mask depends on the attribute. |
| |
| |
| List of message types |
| ===================== |
| |
| All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix |
| according to message purpose: |
| |
| ============== ====================================== |
| ``_GET`` userspace request to retrieve data |
| ``_SET`` userspace request to set data |
| ``_ACT`` userspace request to perform an action |
| ``_GET_REPLY`` kernel reply to a ``GET`` request |
| ``_SET_REPLY`` kernel reply to a ``SET`` request |
| ``_ACT_REPLY`` kernel reply to an ``ACT`` request |
| ``_NTF`` kernel notification |
| ============== ====================================== |
| |
| Userspace to kernel: |
| |
| ===================================== ================================ |
| ``ETHTOOL_MSG_STRSET_GET`` get string set |
| ``ETHTOOL_MSG_LINKINFO_GET`` get link settings |
| ``ETHTOOL_MSG_LINKINFO_SET`` set link settings |
| ``ETHTOOL_MSG_LINKMODES_GET`` get link modes info |
| ``ETHTOOL_MSG_LINKMODES_SET`` set link modes info |
| ``ETHTOOL_MSG_LINKSTATE_GET`` get link state |
| ``ETHTOOL_MSG_DEBUG_GET`` get debugging settings |
| ``ETHTOOL_MSG_DEBUG_SET`` set debugging settings |
| ``ETHTOOL_MSG_WOL_GET`` get wake-on-lan settings |
| ``ETHTOOL_MSG_WOL_SET`` set wake-on-lan settings |
| ``ETHTOOL_MSG_FEATURES_GET`` get device features |
| ``ETHTOOL_MSG_FEATURES_SET`` set device features |
| ``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags |
| ``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags |
| ``ETHTOOL_MSG_RINGS_GET`` get ring sizes |
| ``ETHTOOL_MSG_RINGS_SET`` set ring sizes |
| ``ETHTOOL_MSG_CHANNELS_GET`` get channel counts |
| ``ETHTOOL_MSG_CHANNELS_SET`` set channel counts |
| ``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters |
| ``ETHTOOL_MSG_COALESCE_SET`` set coalescing parameters |
| ``ETHTOOL_MSG_PAUSE_GET`` get pause parameters |
| ``ETHTOOL_MSG_PAUSE_SET`` set pause parameters |
| ``ETHTOOL_MSG_EEE_GET`` get EEE settings |
| ``ETHTOOL_MSG_EEE_SET`` set EEE settings |
| ``ETHTOOL_MSG_TSINFO_GET`` get timestamping info |
| ``ETHTOOL_MSG_CABLE_TEST_ACT`` action start cable test |
| ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` action start raw TDR cable test |
| ``ETHTOOL_MSG_TUNNEL_INFO_GET`` get tunnel offload info |
| ``ETHTOOL_MSG_FEC_GET`` get FEC settings |
| ``ETHTOOL_MSG_FEC_SET`` set FEC settings |
| ``ETHTOOL_MSG_MODULE_EEPROM_GET`` read SFP module EEPROM |
| ``ETHTOOL_MSG_STATS_GET`` get standard statistics |
| ===================================== ================================ |
| |
| Kernel to userspace: |
| |
| ======================================== ================================= |
| ``ETHTOOL_MSG_STRSET_GET_REPLY`` string set contents |
| ``ETHTOOL_MSG_LINKINFO_GET_REPLY`` link settings |
| ``ETHTOOL_MSG_LINKINFO_NTF`` link settings notification |
| ``ETHTOOL_MSG_LINKMODES_GET_REPLY`` link modes info |
| ``ETHTOOL_MSG_LINKMODES_NTF`` link modes notification |
| ``ETHTOOL_MSG_LINKSTATE_GET_REPLY`` link state info |
| ``ETHTOOL_MSG_DEBUG_GET_REPLY`` debugging settings |
| ``ETHTOOL_MSG_DEBUG_NTF`` debugging settings notification |
| ``ETHTOOL_MSG_WOL_GET_REPLY`` wake-on-lan settings |
| ``ETHTOOL_MSG_WOL_NTF`` wake-on-lan settings notification |
| ``ETHTOOL_MSG_FEATURES_GET_REPLY`` device features |
| ``ETHTOOL_MSG_FEATURES_SET_REPLY`` optional reply to FEATURES_SET |
| ``ETHTOOL_MSG_FEATURES_NTF`` netdev features notification |
| ``ETHTOOL_MSG_PRIVFLAGS_GET_REPLY`` private flags |
| ``ETHTOOL_MSG_PRIVFLAGS_NTF`` private flags |
| ``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes |
| ``ETHTOOL_MSG_RINGS_NTF`` ring sizes |
| ``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts |
| ``ETHTOOL_MSG_CHANNELS_NTF`` channel counts |
| ``ETHTOOL_MSG_COALESCE_GET_REPLY`` coalescing parameters |
| ``ETHTOOL_MSG_COALESCE_NTF`` coalescing parameters |
| ``ETHTOOL_MSG_PAUSE_GET_REPLY`` pause parameters |
| ``ETHTOOL_MSG_PAUSE_NTF`` pause parameters |
| ``ETHTOOL_MSG_EEE_GET_REPLY`` EEE settings |
| ``ETHTOOL_MSG_EEE_NTF`` EEE settings |
| ``ETHTOOL_MSG_TSINFO_GET_REPLY`` timestamping info |
| ``ETHTOOL_MSG_CABLE_TEST_NTF`` Cable test results |
| ``ETHTOOL_MSG_CABLE_TEST_TDR_NTF`` Cable test TDR results |
| ``ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY`` tunnel offload info |
| ``ETHTOOL_MSG_FEC_GET_REPLY`` FEC settings |
| ``ETHTOOL_MSG_FEC_NTF`` FEC settings |
| ``ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY`` read SFP module EEPROM |
| ``ETHTOOL_MSG_STATS_GET_REPLY`` standard statistics |
| ======================================== ================================= |
| |
| ``GET`` requests are sent by userspace applications to retrieve device |
| information. They usually do not contain any message specific attributes. |
| Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET`` |
| request with ``NLM_F_DUMP`` and no device identification can be used to query |
| the information for all devices supporting the request. |
| |
| If the data can be also modified, corresponding ``SET`` message with the same |
| layout as corresponding ``GET_REPLY`` is used to request changes. Only |
| attributes where a change is requested are included in such request (also, not |
| all attributes may be changed). Replies to most ``SET`` request consist only |
| of error code and extack; if kernel provides additional data, it is sent in |
| the form of corresponding ``SET_REPLY`` message which can be suppressed by |
| setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header. |
| |
| Data modification also triggers sending a ``NTF`` message with a notification. |
| These usually bear only a subset of attributes which was affected by the |
| change. The same notification is issued if the data is modified using other |
| means (mostly ioctl ethtool interface). Unlike notifications from ethtool |
| netlink code which are only sent if something actually changed, notifications |
| triggered by ioctl interface may be sent even if the request did not actually |
| change any data. |
| |
| ``ACT`` messages request kernel (driver) to perform a specific action. If some |
| information is reported by kernel (which can be suppressed by setting |
| ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of |
| an ``ACT_REPLY`` message. Performing an action also triggers a notification |
| (``NTF`` message). |
| |
| Later sections describe the format and semantics of these messages. |
| |
| |
| STRSET_GET |
| ========== |
| |
| Requests contents of a string set as provided by ioctl commands |
| ``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user |
| writeable so that the corresponding ``STRSET_SET`` message is only used in |
| kernel replies. There are two types of string sets: global (independent of |
| a device, e.g. device feature names) and device specific (e.g. device private |
| flags). |
| |
| Request contents: |
| |
| +---------------------------------------+--------+------------------------+ |
| | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header | |
| +---------------------------------------+--------+------------------------+ |
| | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request | |
| +-+-------------------------------------+--------+------------------------+ |
| | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | |
| +-+-+-----------------------------------+--------+------------------------+ |
| | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | |
| +-+-+-----------------------------------+--------+------------------------+ |
| |
| Kernel response contents: |
| |
| +---------------------------------------+--------+-----------------------+ |
| | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header | |
| +---------------------------------------+--------+-----------------------+ |
| | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | array of string sets | |
| +-+-------------------------------------+--------+-----------------------+ |
| | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | |
| +-+-+-----------------------------------+--------+-----------------------+ |
| | | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | |
| +-+-+-----------------------------------+--------+-----------------------+ |
| | | | ``ETHTOOL_A_STRINGSET_COUNT`` | u32 | number of strings | |
| +-+-+-----------------------------------+--------+-----------------------+ |
| | | | ``ETHTOOL_A_STRINGSET_STRINGS`` | nested | array of strings | |
| +-+-+-+---------------------------------+--------+-----------------------+ |
| | | | | ``ETHTOOL_A_STRINGS_STRING+`` | nested | one string | |
| +-+-+-+-+-------------------------------+--------+-----------------------+ |
| | | | | | ``ETHTOOL_A_STRING_INDEX`` | u32 | string index | |
| +-+-+-+-+-------------------------------+--------+-----------------------+ |
| | | | | | ``ETHTOOL_A_STRING_VALUE`` | string | string value | |
| +-+-+-+-+-------------------------------+--------+-----------------------+ |
| | ``ETHTOOL_A_STRSET_COUNTS_ONLY`` | flag | return only counts | |
| +---------------------------------------+--------+-----------------------+ |
| |
| Device identification in request header is optional. Depending on its presence |
| a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests: |
| |
| - no ``NLM_F_DUMP,`` no device: get "global" stringsets |
| - no ``NLM_F_DUMP``, with device: get string sets related to the device |
| - ``NLM_F_DUMP``, no device: get device related string sets for all devices |
| |
| If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of |
| requested type are returned, otherwise only those specified in the request. |
| Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string |
| counts of the sets, not the actual strings. |
| |
| |
| LINKINFO_GET |
| ============ |
| |
| Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for |
| link modes and autonegotiation related information. The request does not use |
| any attributes. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_LINKINFO_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_LINKINFO_HEADER`` nested reply header |
| ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port |
| ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address |
| ``ETHTOOL_A_LINKINFO_TP_MDIX`` u8 MDI(-X) status |
| ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control |
| ``ETHTOOL_A_LINKINFO_TRANSCEIVER`` u8 transceiver |
| ==================================== ====== ========================== |
| |
| Attributes and their values have the same meaning as matching members of the |
| corresponding ioctl structures. |
| |
| ``LINKINFO_GET`` allows dump requests (kernel returns reply message for all |
| devices supporting the request). |
| |
| |
| LINKINFO_SET |
| ============ |
| |
| ``LINKINFO_SET`` request allows setting some of the attributes reported by |
| ``LINKINFO_GET``. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_LINKINFO_HEADER`` nested request header |
| ``ETHTOOL_A_LINKINFO_PORT`` u8 physical port |
| ``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address |
| ``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control |
| ==================================== ====== ========================== |
| |
| MDI(-X) status and transceiver cannot be set, request with the corresponding |
| attributes is rejected. |
| |
| |
| LINKMODES_GET |
| ============= |
| |
| Requests link modes (supported, advertised and peer advertised) and related |
| information (autonegotiation status, link speed and duplex) as provided by |
| ``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_LINKMODES_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ========================================== ====== ========================== |
| ``ETHTOOL_A_LINKMODES_HEADER`` nested reply header |
| ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status |
| ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes |
| ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes |
| ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s) |
| ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode |
| ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode |
| ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE`` u8 Master/slave port state |
| ========================================== ====== ========================== |
| |
| For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask |
| represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit |
| list. |
| |
| ``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all |
| devices supporting the request). |
| |
| |
| LINKMODES_SET |
| ============= |
| |
| Request contents: |
| |
| ========================================== ====== ========================== |
| ``ETHTOOL_A_LINKMODES_HEADER`` nested request header |
| ``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status |
| ``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes |
| ``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes |
| ``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s) |
| ``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode |
| ``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode |
| ``ETHTOOL_A_LINKMODES_LANES`` u32 lanes |
| ========================================== ====== ========================== |
| |
| ``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If |
| autonegotiation is on (either set now or kept from before), advertised modes |
| are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one |
| of speed, duplex and lanes is specified, kernel adjusts advertised modes to all |
| supported modes matching speed, duplex, lanes or all (whatever is specified). |
| This autoselection is done on ethtool side with ioctl interface, netlink |
| interface is supposed to allow requesting changes without knowing what exactly |
| kernel supports. |
| |
| |
| LINKSTATE_GET |
| ============= |
| |
| Requests link state information. Link up/down flag (as provided by |
| ``ETHTOOL_GLINK`` ioctl command) is provided. Optionally, extended state might |
| be provided as well. In general, extended state describes reasons for why a port |
| is down, or why it operates in some non-obvious mode. This request does not have |
| any attributes. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_LINKSTATE_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ============================ |
| ``ETHTOOL_A_LINKSTATE_HEADER`` nested reply header |
| ``ETHTOOL_A_LINKSTATE_LINK`` bool link state (up/down) |
| ``ETHTOOL_A_LINKSTATE_SQI`` u32 Current Signal Quality Index |
| ``ETHTOOL_A_LINKSTATE_SQI_MAX`` u32 Max support SQI value |
| ``ETHTOOL_A_LINKSTATE_EXT_STATE`` u8 link extended state |
| ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` u8 link extended substate |
| ==================================== ====== ============================ |
| |
| For most NIC drivers, the value of ``ETHTOOL_A_LINKSTATE_LINK`` returns |
| carrier flag provided by ``netif_carrier_ok()`` but there are drivers which |
| define their own handler. |
| |
| ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE`` are |
| optional values. ethtool core can provide either both |
| ``ETHTOOL_A_LINKSTATE_EXT_STATE`` and ``ETHTOOL_A_LINKSTATE_EXT_SUBSTATE``, |
| or only ``ETHTOOL_A_LINKSTATE_EXT_STATE``, or none of them. |
| |
| ``LINKSTATE_GET`` allows dump requests (kernel returns reply messages for all |
| devices supporting the request). |
| |
| |
| Link extended states: |
| |
| ================================================ ============================================ |
| ``ETHTOOL_LINK_EXT_STATE_AUTONEG`` States relating to the autonegotiation or |
| issues therein |
| |
| ``ETHTOOL_LINK_EXT_STATE_LINK_TRAINING_FAILURE`` Failure during link training |
| |
| ``ETHTOOL_LINK_EXT_STATE_LINK_LOGICAL_MISMATCH`` Logical mismatch in physical coding sublayer |
| or forward error correction sublayer |
| |
| ``ETHTOOL_LINK_EXT_STATE_BAD_SIGNAL_INTEGRITY`` Signal integrity issues |
| |
| ``ETHTOOL_LINK_EXT_STATE_NO_CABLE`` No cable connected |
| |
| ``ETHTOOL_LINK_EXT_STATE_CABLE_ISSUE`` Failure is related to cable, |
| e.g., unsupported cable |
| |
| ``ETHTOOL_LINK_EXT_STATE_EEPROM_ISSUE`` Failure is related to EEPROM, e.g., failure |
| during reading or parsing the data |
| |
| ``ETHTOOL_LINK_EXT_STATE_CALIBRATION_FAILURE`` Failure during calibration algorithm |
| |
| ``ETHTOOL_LINK_EXT_STATE_POWER_BUDGET_EXCEEDED`` The hardware is not able to provide the |
| power required from cable or module |
| |
| ``ETHTOOL_LINK_EXT_STATE_OVERHEAT`` The module is overheated |
| ================================================ ============================================ |
| |
| Link extended substates: |
| |
| Autoneg substates: |
| |
| =============================================================== ================================ |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED`` Peer side is down |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_ACK_NOT_RECEIVED`` Ack not received from peer side |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NEXT_PAGE_EXCHANGE_FAILED`` Next page exchange failed |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_PARTNER_DETECTED_FORCE_MODE`` Peer side is down during force |
| mode or there is no agreement of |
| speed |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_FEC_MISMATCH_DURING_OVERRIDE`` Forward error correction modes |
| in both sides are mismatched |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_AN_NO_HCD`` No Highest Common Denominator |
| =============================================================== ================================ |
| |
| Link training substates: |
| |
| =========================================================================== ==================== |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_FRAME_LOCK_NOT_ACQUIRED`` Frames were not |
| recognized, the |
| lock failed |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_INHIBIT_TIMEOUT`` The lock did not |
| occur before |
| timeout |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LT_KR_LINK_PARTNER_DID_NOT_SET_RECEIVER_READY`` Peer side did not |
| send ready signal |
| after training |
| process |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LT_REMOTE_FAULT`` Remote side is not |
| ready yet |
| =========================================================================== ==================== |
| |
| Link logical mismatch substates: |
| |
| ================================================================ =============================== |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_BLOCK_LOCK`` Physical coding sublayer was |
| not locked in first phase - |
| block lock |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_ACQUIRE_AM_LOCK`` Physical coding sublayer was |
| not locked in second phase - |
| alignment markers lock |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_PCS_DID_NOT_GET_ALIGN_STATUS`` Physical coding sublayer did |
| not get align status |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_FC_FEC_IS_NOT_LOCKED`` FC forward error correction is |
| not locked |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_LLM_RS_FEC_IS_NOT_LOCKED`` RS forward error correction is |
| not locked |
| ================================================================ =============================== |
| |
| Bad signal integrity substates: |
| |
| ================================================================= ============================= |
| ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_LARGE_NUMBER_OF_PHYSICAL_ERRORS`` Large number of physical |
| errors |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE`` The system attempted to |
| operate the cable at a rate |
| that is not formally |
| supported, which led to |
| signal integrity issues |
| ================================================================= ============================= |
| |
| Cable issue substates: |
| |
| =================================================== ============================================ |
| ``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable |
| |
| ``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure |
| =================================================== ============================================ |
| |
| DEBUG_GET |
| ========= |
| |
| Requests debugging settings of a device. At the moment, only message mask is |
| provided. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_DEBUG_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_DEBUG_HEADER`` nested reply header |
| ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask |
| ==================================== ====== ========================== |
| |
| The message mask (``ETHTOOL_A_DEBUG_MSGMASK``) is equal to message level as |
| provided by ``ETHTOOL_GMSGLVL`` and set by ``ETHTOOL_SMSGLVL`` in ioctl |
| interface. While it is called message level there for historical reasons, most |
| drivers and almost all newer drivers use it as a mask of enabled message |
| classes (represented by ``NETIF_MSG_*`` constants); therefore netlink |
| interface follows its actual use in practice. |
| |
| ``DEBUG_GET`` allows dump requests (kernel returns reply messages for all |
| devices supporting the request). |
| |
| |
| DEBUG_SET |
| ========= |
| |
| Set or update debugging settings of a device. At the moment, only message mask |
| is supported. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_DEBUG_HEADER`` nested request header |
| ``ETHTOOL_A_DEBUG_MSGMASK`` bitset message mask |
| ==================================== ====== ========================== |
| |
| ``ETHTOOL_A_DEBUG_MSGMASK`` bit set allows setting or modifying mask of |
| enabled debugging message types for the device. |
| |
| |
| WOL_GET |
| ======= |
| |
| Query device wake-on-lan settings. Unlike most "GET" type requests, |
| ``ETHTOOL_MSG_WOL_GET`` requires (netns) ``CAP_NET_ADMIN`` privileges as it |
| (potentially) provides SecureOn(tm) password which is confidential. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_WOL_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_WOL_HEADER`` nested reply header |
| ``ETHTOOL_A_WOL_MODES`` bitset mask of enabled WoL modes |
| ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password |
| ==================================== ====== ========================== |
| |
| In reply, ``ETHTOOL_A_WOL_MODES`` mask consists of modes supported by the |
| device, value of modes which are enabled. ``ETHTOOL_A_WOL_SOPASS`` is only |
| included in reply if ``WAKE_MAGICSECURE`` mode is supported. |
| |
| |
| WOL_SET |
| ======= |
| |
| Set or update wake-on-lan settings. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_WOL_HEADER`` nested request header |
| ``ETHTOOL_A_WOL_MODES`` bitset enabled WoL modes |
| ``ETHTOOL_A_WOL_SOPASS`` binary SecureOn(tm) password |
| ==================================== ====== ========================== |
| |
| ``ETHTOOL_A_WOL_SOPASS`` is only allowed for devices supporting |
| ``WAKE_MAGICSECURE`` mode. |
| |
| |
| FEATURES_GET |
| ============ |
| |
| Gets netdev features like ``ETHTOOL_GFEATURES`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_FEATURES_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_FEATURES_HEADER`` nested reply header |
| ``ETHTOOL_A_FEATURES_HW`` bitset dev->hw_features |
| ``ETHTOOL_A_FEATURES_WANTED`` bitset dev->wanted_features |
| ``ETHTOOL_A_FEATURES_ACTIVE`` bitset dev->features |
| ``ETHTOOL_A_FEATURES_NOCHANGE`` bitset NETIF_F_NEVER_CHANGE |
| ==================================== ====== ========================== |
| |
| Bitmaps in kernel response have the same meaning as bitmaps used in ioctl |
| interference but attribute names are different (they are based on |
| corresponding members of struct net_device). Legacy "flags" are not provided, |
| if userspace needs them (most likely only ethtool for backward compatibility), |
| it can calculate their values from related feature bits itself. |
| ETHA_FEATURES_HW uses mask consisting of all features recognized by kernel (to |
| provide all names when using verbose bitmap format), the other three use no |
| mask (simple bit lists). |
| |
| |
| FEATURES_SET |
| ============ |
| |
| Request to set netdev features like ``ETHTOOL_SFEATURES`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_FEATURES_HEADER`` nested request header |
| ``ETHTOOL_A_FEATURES_WANTED`` bitset requested features |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_FEATURES_HEADER`` nested reply header |
| ``ETHTOOL_A_FEATURES_WANTED`` bitset diff wanted vs. result |
| ``ETHTOOL_A_FEATURES_ACTIVE`` bitset diff old vs. new active |
| ==================================== ====== ========================== |
| |
| Request constains only one bitset which can be either value/mask pair (request |
| to change specific feature bits and leave the rest) or only a value (request |
| to set all features to specified set). |
| |
| As request is subject to netdev_change_features() sanity checks, optional |
| kernel reply (can be suppressed by ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request |
| header) informs client about the actual result. ``ETHTOOL_A_FEATURES_WANTED`` |
| reports the difference between client request and actual result: mask consists |
| of bits which differ between requested features and result (dev->features |
| after the operation), value consists of values of these bits in the request |
| (i.e. negated values from resulting features). ``ETHTOOL_A_FEATURES_ACTIVE`` |
| reports the difference between old and new dev->features: mask consists of |
| bits which have changed, values are their values in new dev->features (after |
| the operation). |
| |
| ``ETHTOOL_MSG_FEATURES_NTF`` notification is sent not only if device features |
| are modified using ``ETHTOOL_MSG_FEATURES_SET`` request or on of ethtool ioctl |
| request but also each time features are modified with netdev_update_features() |
| or netdev_change_features(). |
| |
| |
| PRIVFLAGS_GET |
| ============= |
| |
| Gets private flags like ``ETHTOOL_GPFLAGS`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested reply header |
| ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags |
| ==================================== ====== ========================== |
| |
| ``ETHTOOL_A_PRIVFLAGS_FLAGS`` is a bitset with values of device private flags. |
| These flags are defined by driver, their number and names (and also meaning) |
| are device dependent. For compact bitset format, names can be retrieved as |
| ``ETH_SS_PRIV_FLAGS`` string set. If verbose bitset format is requested, |
| response uses all private flags supported by the device as mask so that client |
| gets the full information without having to fetch the string set with names. |
| |
| |
| PRIVFLAGS_SET |
| ============= |
| |
| Sets or modifies values of device private flags like ``ETHTOOL_SPFLAGS`` |
| ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_PRIVFLAGS_HEADER`` nested request header |
| ``ETHTOOL_A_PRIVFLAGS_FLAGS`` bitset private flags |
| ==================================== ====== ========================== |
| |
| ``ETHTOOL_A_PRIVFLAGS_FLAGS`` can either set the whole set of private flags or |
| modify only values of some of them. |
| |
| |
| RINGS_GET |
| ========= |
| |
| Gets ring sizes like ``ETHTOOL_GRINGPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_RINGS_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_RINGS_HEADER`` nested reply header |
| ``ETHTOOL_A_RINGS_RX_MAX`` u32 max size of RX ring |
| ``ETHTOOL_A_RINGS_RX_MINI_MAX`` u32 max size of RX mini ring |
| ``ETHTOOL_A_RINGS_RX_JUMBO_MAX`` u32 max size of RX jumbo ring |
| ``ETHTOOL_A_RINGS_TX_MAX`` u32 max size of TX ring |
| ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring |
| ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring |
| ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring |
| ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring |
| ==================================== ====== ========================== |
| |
| |
| RINGS_SET |
| ========= |
| |
| Sets ring sizes like ``ETHTOOL_SRINGPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_RINGS_HEADER`` nested reply header |
| ``ETHTOOL_A_RINGS_RX`` u32 size of RX ring |
| ``ETHTOOL_A_RINGS_RX_MINI`` u32 size of RX mini ring |
| ``ETHTOOL_A_RINGS_RX_JUMBO`` u32 size of RX jumbo ring |
| ``ETHTOOL_A_RINGS_TX`` u32 size of TX ring |
| ==================================== ====== ========================== |
| |
| Kernel checks that requested ring sizes do not exceed limits reported by |
| driver. Driver may impose additional constraints and may not suspport all |
| attributes. |
| |
| |
| CHANNELS_GET |
| ============ |
| |
| Gets channel counts like ``ETHTOOL_GCHANNELS`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_CHANNELS_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_CHANNELS_HEADER`` nested reply header |
| ``ETHTOOL_A_CHANNELS_RX_MAX`` u32 max receive channels |
| ``ETHTOOL_A_CHANNELS_TX_MAX`` u32 max transmit channels |
| ``ETHTOOL_A_CHANNELS_OTHER_MAX`` u32 max other channels |
| ``ETHTOOL_A_CHANNELS_COMBINED_MAX`` u32 max combined channels |
| ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count |
| ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count |
| ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count |
| ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count |
| ===================================== ====== ========================== |
| |
| |
| CHANNELS_SET |
| ============ |
| |
| Sets channel counts like ``ETHTOOL_SCHANNELS`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_CHANNELS_HEADER`` nested request header |
| ``ETHTOOL_A_CHANNELS_RX_COUNT`` u32 receive channel count |
| ``ETHTOOL_A_CHANNELS_TX_COUNT`` u32 transmit channel count |
| ``ETHTOOL_A_CHANNELS_OTHER_COUNT`` u32 other channel count |
| ``ETHTOOL_A_CHANNELS_COMBINED_COUNT`` u32 combined channel count |
| ===================================== ====== ========================== |
| |
| Kernel checks that requested channel counts do not exceed limits reported by |
| driver. Driver may impose additional constraints and may not suspport all |
| attributes. |
| |
| |
| COALESCE_GET |
| ============ |
| |
| Gets coalescing parameters like ``ETHTOOL_GCOALESCE`` ioctl request. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_COALESCE_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| =========================================== ====== ======================= |
| ``ETHTOOL_A_COALESCE_HEADER`` nested reply header |
| ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx |
| ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ |
| ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx |
| ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ |
| ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update |
| ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce |
| ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce |
| ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate |
| ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx |
| ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx |
| ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate |
| ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx |
| ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx |
| ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval |
| =========================================== ====== ======================= |
| |
| Attributes are only included in reply if their value is not zero or the |
| corresponding bit in ``ethtool_ops::supported_coalesce_params`` is set (i.e. |
| they are declared as supported by driver). |
| |
| |
| COALESCE_SET |
| ============ |
| |
| Sets coalescing parameters like ``ETHTOOL_SCOALESCE`` ioctl request. |
| |
| Request contents: |
| |
| =========================================== ====== ======================= |
| ``ETHTOOL_A_COALESCE_HEADER`` nested request header |
| ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx |
| ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ |
| ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx |
| ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ |
| ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update |
| ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce |
| ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce |
| ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate |
| ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx |
| ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx |
| ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate |
| ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx |
| ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx |
| ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx |
| ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx |
| ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval |
| =========================================== ====== ======================= |
| |
| Request is rejected if it attributes declared as unsupported by driver (i.e. |
| such that the corresponding bit in ``ethtool_ops::supported_coalesce_params`` |
| is not set), regardless of their values. Driver may impose additional |
| constraints on coalescing parameters and their values. |
| |
| |
| PAUSE_GET |
| ========= |
| |
| Gets pause frame settings like ``ETHTOOL_GPAUSEPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_PAUSE_HEADER`` nested request header |
| ===================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_PAUSE_HEADER`` nested request header |
| ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation |
| ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames |
| ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames |
| ``ETHTOOL_A_PAUSE_STATS`` nested pause statistics |
| ===================================== ====== ========================== |
| |
| ``ETHTOOL_A_PAUSE_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set |
| in ``ETHTOOL_A_HEADER_FLAGS``. |
| It will be empty if driver did not report any statistics. Drivers fill in |
| the statistics in the following structure: |
| |
| .. kernel-doc:: include/linux/ethtool.h |
| :identifiers: ethtool_pause_stats |
| |
| Each member has a corresponding attribute defined. |
| |
| PAUSE_SET |
| ========= |
| |
| Sets pause parameters like ``ETHTOOL_GPAUSEPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_PAUSE_HEADER`` nested request header |
| ``ETHTOOL_A_PAUSE_AUTONEG`` bool pause autonegotiation |
| ``ETHTOOL_A_PAUSE_RX`` bool receive pause frames |
| ``ETHTOOL_A_PAUSE_TX`` bool transmit pause frames |
| ===================================== ====== ========================== |
| |
| |
| EEE_GET |
| ======= |
| |
| Gets Energy Efficient Ethernet settings like ``ETHTOOL_GEEE`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_EEE_HEADER`` nested request header |
| ===================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_EEE_HEADER`` nested request header |
| ``ETHTOOL_A_EEE_MODES_OURS`` bool supported/advertised modes |
| ``ETHTOOL_A_EEE_MODES_PEER`` bool peer advertised link modes |
| ``ETHTOOL_A_EEE_ACTIVE`` bool EEE is actively used |
| ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled |
| ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled |
| ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us) |
| ===================================== ====== ========================== |
| |
| In ``ETHTOOL_A_EEE_MODES_OURS``, mask consists of link modes for which EEE is |
| enabled, value of link modes for which EEE is advertised. Link modes for which |
| peer advertises EEE are listed in ``ETHTOOL_A_EEE_MODES_PEER`` (no mask). The |
| netlink interface allows reporting EEE status for all link modes but only |
| first 32 are provided by the ``ethtool_ops`` callback. |
| |
| |
| EEE_SET |
| ======= |
| |
| Sets Energy Efficient Ethernet parameters like ``ETHTOOL_SEEE`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_EEE_HEADER`` nested request header |
| ``ETHTOOL_A_EEE_MODES_OURS`` bool advertised modes |
| ``ETHTOOL_A_EEE_ENABLED`` bool EEE is enabled |
| ``ETHTOOL_A_EEE_TX_LPI_ENABLED`` bool Tx lpi enabled |
| ``ETHTOOL_A_EEE_TX_LPI_TIMER`` u32 Tx lpi timeout (in us) |
| ===================================== ====== ========================== |
| |
| ``ETHTOOL_A_EEE_MODES_OURS`` is used to either list link modes to advertise |
| EEE for (if there is no mask) or specify changes to the list (if there is |
| a mask). The netlink interface allows reporting EEE status for all link modes |
| but only first 32 can be set at the moment as that is what the ``ethtool_ops`` |
| callback supports. |
| |
| |
| TSINFO_GET |
| ========== |
| |
| Gets timestamping information like ``ETHTOOL_GET_TS_INFO`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_TSINFO_HEADER`` nested request header |
| ===================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_TSINFO_HEADER`` nested request header |
| ``ETHTOOL_A_TSINFO_TIMESTAMPING`` bitset SO_TIMESTAMPING flags |
| ``ETHTOOL_A_TSINFO_TX_TYPES`` bitset supported Tx types |
| ``ETHTOOL_A_TSINFO_RX_FILTERS`` bitset supported Rx filters |
| ``ETHTOOL_A_TSINFO_PHC_INDEX`` u32 PTP hw clock index |
| ===================================== ====== ========================== |
| |
| ``ETHTOOL_A_TSINFO_PHC_INDEX`` is absent if there is no associated PHC (there |
| is no special value for this case). The bitset attributes are omitted if they |
| would be empty (no bit set). |
| |
| CABLE_TEST |
| ========== |
| |
| Start a cable test. |
| |
| Request contents: |
| |
| ==================================== ====== ========================== |
| ``ETHTOOL_A_CABLE_TEST_HEADER`` nested request header |
| ==================================== ====== ========================== |
| |
| Notification contents: |
| |
| An Ethernet cable typically contains 1, 2 or 4 pairs. The length of |
| the pair can only be measured when there is a fault in the pair and |
| hence a reflection. Information about the fault may not be available, |
| depending on the specific hardware. Hence the contents of the notify |
| message are mostly optional. The attributes can be repeated an |
| arbitrary number of times, in an arbitrary order, for an arbitrary |
| number of pairs. |
| |
| The example shows the notification sent when the test is completed for |
| a T2 cable, i.e. two pairs. One pair is OK and hence has no length |
| information. The second pair has a fault and does have length |
| information. |
| |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_HEADER`` | nested | reply header | |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_STATUS`` | u8 | completed | |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_NTF_NEST`` | nested | all the results | |
| +-+-------------------------------------------+--------+---------------------+ |
| | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test result | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | ``ETHTOOL_A_CABLE_NEST_RESULT`` | nested | cable test results | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_CODE`` | u8 | result code | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | ``ETHTOOL_A_CABLE_NEST_FAULT_LENGTH`` | nested | cable length | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_CABLE_FAULT_LENGTH_CM`` | u32 | length in cm | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| |
| CABLE_TEST TDR |
| ============== |
| |
| Start a cable test and report raw TDR data |
| |
| Request contents: |
| |
| +--------------------------------------------+--------+-----------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header | |
| +--------------------------------------------+--------+-----------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_TDR_CFG`` | nested | test configuration | |
| +-+------------------------------------------+--------+-----------------------+ |
| | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | first data distance | |
| +-+-+----------------------------------------+--------+-----------------------+ |
| | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | last data distance | |
| +-+-+----------------------------------------+--------+-----------------------+ |
| | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step | |
| +-+-+----------------------------------------+--------+-----------------------+ |
| | | ``ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR`` | u8 | pair to test | |
| +-+-+----------------------------------------+--------+-----------------------+ |
| |
| The ETHTOOL_A_CABLE_TEST_TDR_CFG is optional, as well as all members |
| of the nest. All distances are expressed in centimeters. The PHY takes |
| the distances as a guide, and rounds to the nearest distance it |
| actually supports. If a pair is passed, only that one pair will be |
| tested. Otherwise all pairs are tested. |
| |
| Notification contents: |
| |
| Raw TDR data is gathered by sending a pulse down the cable and |
| recording the amplitude of the reflected pulse for a given distance. |
| |
| It can take a number of seconds to collect TDR data, especial if the |
| full 100 meters is probed at 1 meter intervals. When the test is |
| started a notification will be sent containing just |
| ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value |
| ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED. |
| |
| When the test has completed a second notification will be sent |
| containing ETHTOOL_A_CABLE_TEST_TDR_STATUS with the value |
| ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED and the TDR data. |
| |
| The message may optionally contain the amplitude of the pulse send |
| down the cable. This is measured in mV. A reflection should not be |
| bigger than transmitted pulse. |
| |
| Before the raw TDR data should be an ETHTOOL_A_CABLE_TDR_NEST_STEP |
| nest containing information about the distance along the cable for the |
| first reading, the last reading, and the step between each |
| reading. Distances are measured in centimeters. These should be the |
| exact values the PHY used. These may be different to what the user |
| requested, if the native measurement resolution is greater than 1 cm. |
| |
| For each step along the cable, a ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE is |
| used to report the amplitude of the reflection for a given pair. |
| |
| +---------------------------------------------+--------+----------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` | nested | reply header | |
| +---------------------------------------------+--------+----------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_TDR_STATUS`` | u8 | completed | |
| +---------------------------------------------+--------+----------------------+ |
| | ``ETHTOOL_A_CABLE_TEST_TDR_NTF_NEST`` | nested | all the results | |
| +-+-------------------------------------------+--------+----------------------+ |
| | | ``ETHTOOL_A_CABLE_TDR_NEST_PULSE`` | nested | TX Pulse amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_PULSE_mV`` | s16 | Pulse amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | ``ETHTOOL_A_CABLE_NEST_STEP`` | nested | TDR step info | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE`` | u32 | First data distance | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_STEP_LAST_DISTANCE`` | u32 | Last data distance | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_STEP_STEP_DISTANCE`` | u32 | distance of each step| |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | ``ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE`` | nested | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_RESULTS_PAIR`` | u8 | pair number | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| | | | ``ETHTOOL_A_CABLE_AMPLITUDE_mV`` | s16 | Reflection amplitude | |
| +-+-+-----------------------------------------+--------+----------------------+ |
| |
| TUNNEL_INFO |
| =========== |
| |
| Gets information about the tunnel state NIC is aware of. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_TUNNEL_INFO_HEADER`` nested request header |
| ===================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_TUNNEL_INFO_HEADER`` | nested | reply header | |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_TUNNEL_INFO_UDP_PORTS`` | nested | all UDP port tables | |
| +-+-------------------------------------------+--------+---------------------+ |
| | | ``ETHTOOL_A_TUNNEL_UDP_TABLE`` | nested | one UDP port table | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE`` | u32 | max size of the | |
| | | | | | table | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` | bitset | tunnel types which | |
| | | | | | table can hold | |
| +-+-+-----------------------------------------+--------+---------------------+ |
| | | | ``ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY`` | nested | offloaded UDP port | |
| +-+-+-+---------------------------------------+--------+---------------------+ |
| | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT`` | be16 | UDP port | |
| +-+-+-+---------------------------------------+--------+---------------------+ |
| | | | | ``ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE`` | u32 | tunnel type | |
| +-+-+-+---------------------------------------+--------+---------------------+ |
| |
| For UDP tunnel table empty ``ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES`` indicates that |
| the table contains static entries, hard-coded by the NIC. |
| |
| FEC_GET |
| ======= |
| |
| Gets FEC configuration and state like ``ETHTOOL_GFECPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_FEC_HEADER`` nested request header |
| ===================================== ====== ========================== |
| |
| Kernel response contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_FEC_HEADER`` nested request header |
| ``ETHTOOL_A_FEC_MODES`` bitset configured modes |
| ``ETHTOOL_A_FEC_AUTO`` bool FEC mode auto selection |
| ``ETHTOOL_A_FEC_ACTIVE`` u32 index of active FEC mode |
| ``ETHTOOL_A_FEC_STATS`` nested FEC statistics |
| ===================================== ====== ========================== |
| |
| ``ETHTOOL_A_FEC_ACTIVE`` is the bit index of the FEC link mode currently |
| active on the interface. This attribute may not be present if device does |
| not support FEC. |
| |
| ``ETHTOOL_A_FEC_MODES`` and ``ETHTOOL_A_FEC_AUTO`` are only meaningful when |
| autonegotiation is disabled. If ``ETHTOOL_A_FEC_AUTO`` is non-zero driver will |
| select the FEC mode automatically based on the parameters of the SFP module. |
| This is equivalent to the ``ETHTOOL_FEC_AUTO`` bit of the ioctl interface. |
| ``ETHTOOL_A_FEC_MODES`` carry the current FEC configuration using link mode |
| bits (rather than old ``ETHTOOL_FEC_*`` bits). |
| |
| ``ETHTOOL_A_FEC_STATS`` are reported if ``ETHTOOL_FLAG_STATS`` was set in |
| ``ETHTOOL_A_HEADER_FLAGS``. |
| Each attribute carries an array of 64bit statistics. First entry in the array |
| contains the total number of events on the port, while the following entries |
| are counters corresponding to lanes/PCS instances. The number of entries in |
| the array will be: |
| |
| +--------------+---------------------------------------------+ |
| | `0` | device does not support FEC statistics | |
| +--------------+---------------------------------------------+ |
| | `1` | device does not support per-lane break down | |
| +--------------+---------------------------------------------+ |
| | `1 + #lanes` | device has full support for FEC stats | |
| +--------------+---------------------------------------------+ |
| |
| Drivers fill in the statistics in the following structure: |
| |
| .. kernel-doc:: include/linux/ethtool.h |
| :identifiers: ethtool_fec_stats |
| |
| FEC_SET |
| ======= |
| |
| Sets FEC parameters like ``ETHTOOL_SFECPARAM`` ioctl request. |
| |
| Request contents: |
| |
| ===================================== ====== ========================== |
| ``ETHTOOL_A_FEC_HEADER`` nested request header |
| ``ETHTOOL_A_FEC_MODES`` bitset configured modes |
| ``ETHTOOL_A_FEC_AUTO`` bool FEC mode auto selection |
| ===================================== ====== ========================== |
| |
| ``FEC_SET`` is only meaningful when autonegotiation is disabled. Otherwise |
| FEC mode is selected as part of autonegotiation. |
| |
| ``ETHTOOL_A_FEC_MODES`` selects which FEC mode should be used. It's recommended |
| to set only one bit, if multiple bits are set driver may choose between them |
| in an implementation specific way. |
| |
| ``ETHTOOL_A_FEC_AUTO`` requests the driver to choose FEC mode based on SFP |
| module parameters. This does not mean autonegotiation. |
| |
| MODULE_EEPROM |
| ============= |
| |
| Fetch module EEPROM data dump. |
| This interface is designed to allow dumps of at most 1/2 page at once. This |
| means only dumps of 128 (or less) bytes are allowed, without crossing half page |
| boundary located at offset 128. For pages other than 0 only high 128 bytes are |
| accessible. |
| |
| Request contents: |
| |
| ======================================= ====== ========================== |
| ``ETHTOOL_A_MODULE_EEPROM_HEADER`` nested request header |
| ``ETHTOOL_A_MODULE_EEPROM_OFFSET`` u32 offset within a page |
| ``ETHTOOL_A_MODULE_EEPROM_LENGTH`` u32 amount of bytes to read |
| ``ETHTOOL_A_MODULE_EEPROM_PAGE`` u8 page number |
| ``ETHTOOL_A_MODULE_EEPROM_BANK`` u8 bank number |
| ``ETHTOOL_A_MODULE_EEPROM_I2C_ADDRESS`` u8 page I2C address |
| ======================================= ====== ========================== |
| |
| Kernel response contents: |
| |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_MODULE_EEPROM_HEADER`` | nested | reply header | |
| +---------------------------------------------+--------+---------------------+ |
| | ``ETHTOOL_A_MODULE_EEPROM_DATA`` | nested | array of bytes from | |
| | | | module EEPROM | |
| +---------------------------------------------+--------+---------------------+ |
| |
| ``ETHTOOL_A_MODULE_EEPROM_DATA`` has an attribute length equal to the amount of |
| bytes driver actually read. |
| |
| STATS_GET |
| ========= |
| |
| Get standard statistics for the interface. Note that this is not |
| a re-implementation of ``ETHTOOL_GSTATS`` which exposed driver-defined |
| stats. |
| |
| Request contents: |
| |
| ======================================= ====== ========================== |
| ``ETHTOOL_A_STATS_HEADER`` nested request header |
| ``ETHTOOL_A_STATS_GROUPS`` bitset requested groups of stats |
| ======================================= ====== ========================== |
| |
| Kernel response contents: |
| |
| +-----------------------------------+--------+--------------------------------+ |
| | ``ETHTOOL_A_STATS_HEADER`` | nested | reply header | |
| +-----------------------------------+--------+--------------------------------+ |
| | ``ETHTOOL_A_STATS_GRP`` | nested | one or more group of stats | |
| +-+---------------------------------+--------+--------------------------------+ |
| | | ``ETHTOOL_A_STATS_GRP_ID`` | u32 | group ID - ``ETHTOOL_STATS_*`` | |
| +-+---------------------------------+--------+--------------------------------+ |
| | | ``ETHTOOL_A_STATS_GRP_SS_ID`` | u32 | string set ID for names | |
| +-+---------------------------------+--------+--------------------------------+ |
| | | ``ETHTOOL_A_STATS_GRP_STAT`` | nested | nest containing a statistic | |
| +-+---------------------------------+--------+--------------------------------+ |
| | | ``ETHTOOL_A_STATS_GRP_HIST_RX`` | nested | histogram statistic (Rx) | |
| +-+---------------------------------+--------+--------------------------------+ |
| | | ``ETHTOOL_A_STATS_GRP_HIST_TX`` | nested | histogram statistic (Tx) | |
| +-+---------------------------------+--------+--------------------------------+ |
| |
| Users specify which groups of statistics they are requesting via |
| the ``ETHTOOL_A_STATS_GROUPS`` bitset. Currently defined values are: |
| |
| ====================== ======== =============================================== |
| ETHTOOL_STATS_ETH_MAC eth-mac Basic IEEE 802.3 MAC statistics (30.3.1.1.*) |
| ETHTOOL_STATS_ETH_PHY eth-phy Basic IEEE 802.3 PHY statistics (30.3.2.1.*) |
| ETHTOOL_STATS_ETH_CTRL eth-ctrl Basic IEEE 802.3 MAC Ctrl statistics (30.3.3.*) |
| ETHTOOL_STATS_RMON rmon RMON (RFC 2819) statistics |
| ====================== ======== =============================================== |
| |
| Each group should have a corresponding ``ETHTOOL_A_STATS_GRP`` in the reply. |
| ``ETHTOOL_A_STATS_GRP_ID`` identifies which group's statistics nest contains. |
| ``ETHTOOL_A_STATS_GRP_SS_ID`` identifies the string set ID for the names of |
| the statistics in the group, if available. |
| |
| Statistics are added to the ``ETHTOOL_A_STATS_GRP`` nest under |
| ``ETHTOOL_A_STATS_GRP_STAT``. ``ETHTOOL_A_STATS_GRP_STAT`` should contain |
| single 8 byte (u64) attribute inside - the type of that attribute is |
| the statistic ID and the value is the value of the statistic. |
| Each group has its own interpretation of statistic IDs. |
| Attribute IDs correspond to strings from the string set identified |
| by ``ETHTOOL_A_STATS_GRP_SS_ID``. Complex statistics (such as RMON histogram |
| entries) are also listed inside ``ETHTOOL_A_STATS_GRP`` and do not have |
| a string defined in the string set. |
| |
| RMON "histogram" counters count number of packets within given size range. |
| Because RFC does not specify the ranges beyond the standard 1518 MTU devices |
| differ in definition of buckets. For this reason the definition of packet ranges |
| is left to each driver. |
| |
| ``ETHTOOL_A_STATS_GRP_HIST_RX`` and ``ETHTOOL_A_STATS_GRP_HIST_TX`` nests |
| contain the following attributes: |
| |
| ================================= ====== =================================== |
| ETHTOOL_A_STATS_RMON_HIST_BKT_LOW u32 low bound of the packet size bucket |
| ETHTOOL_A_STATS_RMON_HIST_BKT_HI u32 high bound of the bucket |
| ETHTOOL_A_STATS_RMON_HIST_VAL u64 packet counter |
| ================================= ====== =================================== |
| |
| Low and high bounds are inclusive, for example: |
| |
| ============================= ==== ==== |
| RFC statistic low high |
| ============================= ==== ==== |
| etherStatsPkts64Octets 0 64 |
| etherStatsPkts512to1023Octets 512 1023 |
| ============================= ==== ==== |
| |
| Request translation |
| =================== |
| |
| The following table maps ioctl commands to netlink commands providing their |
| functionality. Entries with "n/a" in right column are commands which do not |
| have their netlink replacement yet. Entries which "n/a" in the left column |
| are netlink only. |
| |
| =================================== ===================================== |
| ioctl command netlink command |
| =================================== ===================================== |
| ``ETHTOOL_GSET`` ``ETHTOOL_MSG_LINKINFO_GET`` |
| ``ETHTOOL_MSG_LINKMODES_GET`` |
| ``ETHTOOL_SSET`` ``ETHTOOL_MSG_LINKINFO_SET`` |
| ``ETHTOOL_MSG_LINKMODES_SET`` |
| ``ETHTOOL_GDRVINFO`` n/a |
| ``ETHTOOL_GREGS`` n/a |
| ``ETHTOOL_GWOL`` ``ETHTOOL_MSG_WOL_GET`` |
| ``ETHTOOL_SWOL`` ``ETHTOOL_MSG_WOL_SET`` |
| ``ETHTOOL_GMSGLVL`` ``ETHTOOL_MSG_DEBUG_GET`` |
| ``ETHTOOL_SMSGLVL`` ``ETHTOOL_MSG_DEBUG_SET`` |
| ``ETHTOOL_NWAY_RST`` n/a |
| ``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET`` |
| ``ETHTOOL_GEEPROM`` n/a |
| ``ETHTOOL_SEEPROM`` n/a |
| ``ETHTOOL_GCOALESCE`` ``ETHTOOL_MSG_COALESCE_GET`` |
| ``ETHTOOL_SCOALESCE`` ``ETHTOOL_MSG_COALESCE_SET`` |
| ``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET`` |
| ``ETHTOOL_SRINGPARAM`` ``ETHTOOL_MSG_RINGS_SET`` |
| ``ETHTOOL_GPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_GET`` |
| ``ETHTOOL_SPAUSEPARAM`` ``ETHTOOL_MSG_PAUSE_SET`` |
| ``ETHTOOL_GRXCSUM`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SRXCSUM`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GTXCSUM`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_STXCSUM`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GSG`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SSG`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_TEST`` n/a |
| ``ETHTOOL_GSTRINGS`` ``ETHTOOL_MSG_STRSET_GET`` |
| ``ETHTOOL_PHYS_ID`` n/a |
| ``ETHTOOL_GSTATS`` n/a |
| ``ETHTOOL_GTSO`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_STSO`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GPERMADDR`` rtnetlink ``RTM_GETLINK`` |
| ``ETHTOOL_GUFO`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SUFO`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GGSO`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SGSO`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GFLAGS`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SFLAGS`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_GET`` |
| ``ETHTOOL_SPFLAGS`` ``ETHTOOL_MSG_PRIVFLAGS_SET`` |
| ``ETHTOOL_GRXFH`` n/a |
| ``ETHTOOL_SRXFH`` n/a |
| ``ETHTOOL_GGRO`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SGRO`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GRXRINGS`` n/a |
| ``ETHTOOL_GRXCLSRLCNT`` n/a |
| ``ETHTOOL_GRXCLSRULE`` n/a |
| ``ETHTOOL_GRXCLSRLALL`` n/a |
| ``ETHTOOL_SRXCLSRLDEL`` n/a |
| ``ETHTOOL_SRXCLSRLINS`` n/a |
| ``ETHTOOL_FLASHDEV`` n/a |
| ``ETHTOOL_RESET`` n/a |
| ``ETHTOOL_SRXNTUPLE`` n/a |
| ``ETHTOOL_GRXNTUPLE`` n/a |
| ``ETHTOOL_GSSET_INFO`` ``ETHTOOL_MSG_STRSET_GET`` |
| ``ETHTOOL_GRXFHINDIR`` n/a |
| ``ETHTOOL_SRXFHINDIR`` n/a |
| ``ETHTOOL_GFEATURES`` ``ETHTOOL_MSG_FEATURES_GET`` |
| ``ETHTOOL_SFEATURES`` ``ETHTOOL_MSG_FEATURES_SET`` |
| ``ETHTOOL_GCHANNELS`` ``ETHTOOL_MSG_CHANNELS_GET`` |
| ``ETHTOOL_SCHANNELS`` ``ETHTOOL_MSG_CHANNELS_SET`` |
| ``ETHTOOL_SET_DUMP`` n/a |
| ``ETHTOOL_GET_DUMP_FLAG`` n/a |
| ``ETHTOOL_GET_DUMP_DATA`` n/a |
| ``ETHTOOL_GET_TS_INFO`` ``ETHTOOL_MSG_TSINFO_GET`` |
| ``ETHTOOL_GMODULEINFO`` ``ETHTOOL_MSG_MODULE_EEPROM_GET`` |
| ``ETHTOOL_GMODULEEEPROM`` ``ETHTOOL_MSG_MODULE_EEPROM_GET`` |
| ``ETHTOOL_GEEE`` ``ETHTOOL_MSG_EEE_GET`` |
| ``ETHTOOL_SEEE`` ``ETHTOOL_MSG_EEE_SET`` |
| ``ETHTOOL_GRSSH`` n/a |
| ``ETHTOOL_SRSSH`` n/a |
| ``ETHTOOL_GTUNABLE`` n/a |
| ``ETHTOOL_STUNABLE`` n/a |
| ``ETHTOOL_GPHYSTATS`` n/a |
| ``ETHTOOL_PERQUEUE`` n/a |
| ``ETHTOOL_GLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_GET`` |
| ``ETHTOOL_MSG_LINKMODES_GET`` |
| ``ETHTOOL_SLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_SET`` |
| ``ETHTOOL_MSG_LINKMODES_SET`` |
| ``ETHTOOL_PHY_GTUNABLE`` n/a |
| ``ETHTOOL_PHY_STUNABLE`` n/a |
| ``ETHTOOL_GFECPARAM`` ``ETHTOOL_MSG_FEC_GET`` |
| ``ETHTOOL_SFECPARAM`` ``ETHTOOL_MSG_FEC_SET`` |
| n/a ``ETHTOOL_MSG_CABLE_TEST_ACT`` |
| n/a ``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` |
| n/a ``ETHTOOL_MSG_TUNNEL_INFO_GET`` |
| =================================== ===================================== |
