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1729 lines
84 KiB
1729 lines
84 KiB
============================= |
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Netlink interface for ethtool |
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============================= |
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Basic information |
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================= |
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Netlink interface for ethtool uses generic netlink family ``ethtool`` |
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(userspace application should use macros ``ETHTOOL_GENL_NAME`` and |
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``ETHTOOL_GENL_VERSION`` defined in ``<linux/ethtool_netlink.h>`` uapi |
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header). This family does not use a specific header, all information in |
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requests and replies is passed using netlink attributes. |
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The ethtool netlink interface uses extended ACK for error and warning |
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reporting, userspace application developers are encouraged to make these |
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messages available to user in a suitable way. |
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Requests can be divided into three categories: "get" (retrieving information), |
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"set" (setting parameters) and "action" (invoking an action). |
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All "set" and "action" type requests require admin privileges |
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(``CAP_NET_ADMIN`` in the namespace). Most "get" type requests are allowed for |
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anyone but there are exceptions (where the response contains sensitive |
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information). In some cases, the request as such is allowed for anyone but |
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unprivileged users have attributes with sensitive information (e.g. |
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wake-on-lan password) omitted. |
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Conventions |
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=========== |
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Attributes which represent a boolean value usually use NLA_U8 type so that we |
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can distinguish three states: "on", "off" and "not present" (meaning the |
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information is not available in "get" requests or value is not to be changed |
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in "set" requests). For these attributes, the "true" value should be passed as |
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number 1 but any non-zero value should be understood as "true" by recipient. |
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In the tables below, "bool" denotes NLA_U8 attributes interpreted in this way. |
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In the message structure descriptions below, if an attribute name is suffixed |
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with "+", parent nest can contain multiple attributes of the same type. This |
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implements an array of entries. |
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Attributes that need to be filled-in by device drivers and that are dumped to |
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user space based on whether they are valid or not should not use zero as a |
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valid value. This avoids the need to explicitly signal the validity of the |
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attribute in the device driver API. |
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Request header |
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============== |
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Each request or reply message contains a nested attribute with common header. |
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Structure of this header is |
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============================== ====== ============================= |
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``ETHTOOL_A_HEADER_DEV_INDEX`` u32 device ifindex |
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``ETHTOOL_A_HEADER_DEV_NAME`` string device name |
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``ETHTOOL_A_HEADER_FLAGS`` u32 flags common for all requests |
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============================== ====== ============================= |
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``ETHTOOL_A_HEADER_DEV_INDEX`` and ``ETHTOOL_A_HEADER_DEV_NAME`` identify the |
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device message relates to. One of them is sufficient in requests, if both are |
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used, they must identify the same device. Some requests, e.g. global string |
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sets, do not require device identification. Most ``GET`` requests also allow |
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dump requests without device identification to query the same information for |
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all devices providing it (each device in a separate message). |
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``ETHTOOL_A_HEADER_FLAGS`` is a bitmap of request flags common for all request |
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types. The interpretation of these flags is the same for all request types but |
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the flags may not apply to requests. Recognized flags are: |
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================================= =================================== |
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``ETHTOOL_FLAG_COMPACT_BITSETS`` use compact format bitsets in reply |
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``ETHTOOL_FLAG_OMIT_REPLY`` omit optional reply (_SET and _ACT) |
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``ETHTOOL_FLAG_STATS`` include optional device statistics |
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================================= =================================== |
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New request flags should follow the general idea that if the flag is not set, |
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the behaviour is backward compatible, i.e. requests from old clients not aware |
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of the flag should be interpreted the way the client expects. A client must |
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not set flags it does not understand. |
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Bit sets |
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======== |
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For short bitmaps of (reasonably) fixed length, standard ``NLA_BITFIELD32`` |
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type is used. For arbitrary length bitmaps, ethtool netlink uses a nested |
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attribute with contents of one of two forms: compact (two binary bitmaps |
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representing bit values and mask of affected bits) and bit-by-bit (list of |
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bits identified by either index or name). |
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Verbose (bit-by-bit) bitsets allow sending symbolic names for bits together |
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with their values which saves a round trip (when the bitset is passed in a |
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request) or at least a second request (when the bitset is in a reply). This is |
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useful for one shot applications like traditional ethtool command. On the |
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other hand, long running applications like ethtool monitor (displaying |
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notifications) or network management daemons may prefer fetching the names |
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only once and using compact form to save message size. Notifications from |
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ethtool netlink interface always use compact form for bitsets. |
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A bitset can represent either a value/mask pair (``ETHTOOL_A_BITSET_NOMASK`` |
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not set) or a single bitmap (``ETHTOOL_A_BITSET_NOMASK`` set). In requests |
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modifying a bitmap, the former changes the bit set in mask to values set in |
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value and preserves the rest; the latter sets the bits set in the bitmap and |
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clears the rest. |
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Compact form: nested (bitset) atrribute contents: |
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============================ ====== ============================ |
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``ETHTOOL_A_BITSET_NOMASK`` flag no mask, only a list |
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``ETHTOOL_A_BITSET_SIZE`` u32 number of significant bits |
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``ETHTOOL_A_BITSET_VALUE`` binary bitmap of bit values |
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``ETHTOOL_A_BITSET_MASK`` binary bitmap of valid bits |
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============================ ====== ============================ |
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Value and mask must have length at least ``ETHTOOL_A_BITSET_SIZE`` bits |
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rounded up to a multiple of 32 bits. They consist of 32-bit words in host byte |
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order, words ordered from least significant to most significant (i.e. the same |
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way as bitmaps are passed with ioctl interface). |
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For compact form, ``ETHTOOL_A_BITSET_SIZE`` and ``ETHTOOL_A_BITSET_VALUE`` are |
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mandatory. ``ETHTOOL_A_BITSET_MASK`` attribute is mandatory if |
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``ETHTOOL_A_BITSET_NOMASK`` is not set (bitset represents a value/mask pair); |
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if ``ETHTOOL_A_BITSET_NOMASK`` is not set, ``ETHTOOL_A_BITSET_MASK`` is not |
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allowed (bitset represents a single bitmap. |
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Kernel bit set length may differ from userspace length if older application is |
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used on newer kernel or vice versa. If userspace bitmap is longer, an error is |
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issued only if the request actually tries to set values of some bits not |
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recognized by kernel. |
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Bit-by-bit form: nested (bitset) attribute contents: |
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+------------------------------------+--------+-----------------------------+ |
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| ``ETHTOOL_A_BITSET_NOMASK`` | flag | no mask, only a list | |
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+------------------------------------+--------+-----------------------------+ |
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| ``ETHTOOL_A_BITSET_SIZE`` | u32 | number of significant bits | |
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+------------------------------------+--------+-----------------------------+ |
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| ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits | |
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+-+----------------------------------+--------+-----------------------------+ |
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| | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit | |
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+-+-+--------------------------------+--------+-----------------------------+ |
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| | | ``ETHTOOL_A_BITSET_BIT_INDEX`` | u32 | bit index (0 for LSB) | |
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+-+-+--------------------------------+--------+-----------------------------+ |
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| | | ``ETHTOOL_A_BITSET_BIT_NAME`` | string | bit name | |
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+-+-+--------------------------------+--------+-----------------------------+ |
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| | | ``ETHTOOL_A_BITSET_BIT_VALUE`` | flag | present if bit is set | |
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+-+-+--------------------------------+--------+-----------------------------+ |
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Bit size is optional for bit-by-bit form. ``ETHTOOL_A_BITSET_BITS`` nest can |
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only contain ``ETHTOOL_A_BITSET_BITS_BIT`` attributes but there can be an |
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arbitrary number of them. A bit may be identified by its index or by its |
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name. When used in requests, listed bits are set to 0 or 1 according to |
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``ETHTOOL_A_BITSET_BIT_VALUE``, the rest is preserved. A request fails if |
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index exceeds kernel bit length or if name is not recognized. |
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When ``ETHTOOL_A_BITSET_NOMASK`` flag is present, bitset is interpreted as |
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a simple bitmap. ``ETHTOOL_A_BITSET_BIT_VALUE`` attributes are not used in |
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such case. Such bitset represents a bitmap with listed bits set and the rest |
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zero. |
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In requests, application can use either form. Form used by kernel in reply is |
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determined by ``ETHTOOL_FLAG_COMPACT_BITSETS`` flag in flags field of request |
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header. Semantics of value and mask depends on the attribute. |
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List of message types |
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===================== |
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All constants identifying message types use ``ETHTOOL_CMD_`` prefix and suffix |
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according to message purpose: |
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============== ====================================== |
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``_GET`` userspace request to retrieve data |
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``_SET`` userspace request to set data |
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``_ACT`` userspace request to perform an action |
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``_GET_REPLY`` kernel reply to a ``GET`` request |
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``_SET_REPLY`` kernel reply to a ``SET`` request |
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``_ACT_REPLY`` kernel reply to an ``ACT`` request |
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``_NTF`` kernel notification |
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============== ====================================== |
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Userspace to kernel: |
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===================================== ================================= |
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``ETHTOOL_MSG_STRSET_GET`` get string set |
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``ETHTOOL_MSG_LINKINFO_GET`` get link settings |
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``ETHTOOL_MSG_LINKINFO_SET`` set link settings |
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``ETHTOOL_MSG_LINKMODES_GET`` get link modes info |
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``ETHTOOL_MSG_LINKMODES_SET`` set link modes info |
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``ETHTOOL_MSG_LINKSTATE_GET`` get link state |
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``ETHTOOL_MSG_DEBUG_GET`` get debugging settings |
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``ETHTOOL_MSG_DEBUG_SET`` set debugging settings |
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``ETHTOOL_MSG_WOL_GET`` get wake-on-lan settings |
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``ETHTOOL_MSG_WOL_SET`` set wake-on-lan settings |
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``ETHTOOL_MSG_FEATURES_GET`` get device features |
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``ETHTOOL_MSG_FEATURES_SET`` set device features |
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``ETHTOOL_MSG_PRIVFLAGS_GET`` get private flags |
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``ETHTOOL_MSG_PRIVFLAGS_SET`` set private flags |
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``ETHTOOL_MSG_RINGS_GET`` get ring sizes |
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``ETHTOOL_MSG_RINGS_SET`` set ring sizes |
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``ETHTOOL_MSG_CHANNELS_GET`` get channel counts |
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``ETHTOOL_MSG_CHANNELS_SET`` set channel counts |
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``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters |
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``ETHTOOL_MSG_COALESCE_SET`` set coalescing parameters |
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``ETHTOOL_MSG_PAUSE_GET`` get pause parameters |
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``ETHTOOL_MSG_PAUSE_SET`` set pause parameters |
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``ETHTOOL_MSG_EEE_GET`` get EEE settings |
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``ETHTOOL_MSG_EEE_SET`` set EEE settings |
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``ETHTOOL_MSG_TSINFO_GET`` get timestamping info |
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``ETHTOOL_MSG_CABLE_TEST_ACT`` action start cable test |
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``ETHTOOL_MSG_CABLE_TEST_TDR_ACT`` action start raw TDR cable test |
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``ETHTOOL_MSG_TUNNEL_INFO_GET`` get tunnel offload info |
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``ETHTOOL_MSG_FEC_GET`` get FEC settings |
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``ETHTOOL_MSG_FEC_SET`` set FEC settings |
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``ETHTOOL_MSG_MODULE_EEPROM_GET`` read SFP module EEPROM |
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``ETHTOOL_MSG_STATS_GET`` get standard statistics |
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``ETHTOOL_MSG_PHC_VCLOCKS_GET`` get PHC virtual clocks info |
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``ETHTOOL_MSG_MODULE_SET`` set transceiver module parameters |
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``ETHTOOL_MSG_MODULE_GET`` get transceiver module parameters |
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===================================== ================================= |
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Kernel to userspace: |
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======================================== ================================= |
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``ETHTOOL_MSG_STRSET_GET_REPLY`` string set contents |
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``ETHTOOL_MSG_LINKINFO_GET_REPLY`` link settings |
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``ETHTOOL_MSG_LINKINFO_NTF`` link settings notification |
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``ETHTOOL_MSG_LINKMODES_GET_REPLY`` link modes info |
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``ETHTOOL_MSG_LINKMODES_NTF`` link modes notification |
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``ETHTOOL_MSG_LINKSTATE_GET_REPLY`` link state info |
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``ETHTOOL_MSG_DEBUG_GET_REPLY`` debugging settings |
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``ETHTOOL_MSG_DEBUG_NTF`` debugging settings notification |
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``ETHTOOL_MSG_WOL_GET_REPLY`` wake-on-lan settings |
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``ETHTOOL_MSG_WOL_NTF`` wake-on-lan settings notification |
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``ETHTOOL_MSG_FEATURES_GET_REPLY`` device features |
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``ETHTOOL_MSG_FEATURES_SET_REPLY`` optional reply to FEATURES_SET |
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``ETHTOOL_MSG_FEATURES_NTF`` netdev features notification |
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``ETHTOOL_MSG_PRIVFLAGS_GET_REPLY`` private flags |
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``ETHTOOL_MSG_PRIVFLAGS_NTF`` private flags |
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``ETHTOOL_MSG_RINGS_GET_REPLY`` ring sizes |
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``ETHTOOL_MSG_RINGS_NTF`` ring sizes |
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``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts |
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``ETHTOOL_MSG_CHANNELS_NTF`` channel counts |
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``ETHTOOL_MSG_COALESCE_GET_REPLY`` coalescing parameters |
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``ETHTOOL_MSG_COALESCE_NTF`` coalescing parameters |
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``ETHTOOL_MSG_PAUSE_GET_REPLY`` pause parameters |
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``ETHTOOL_MSG_PAUSE_NTF`` pause parameters |
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``ETHTOOL_MSG_EEE_GET_REPLY`` EEE settings |
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``ETHTOOL_MSG_EEE_NTF`` EEE settings |
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``ETHTOOL_MSG_TSINFO_GET_REPLY`` timestamping info |
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``ETHTOOL_MSG_CABLE_TEST_NTF`` Cable test results |
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``ETHTOOL_MSG_CABLE_TEST_TDR_NTF`` Cable test TDR results |
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``ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY`` tunnel offload info |
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``ETHTOOL_MSG_FEC_GET_REPLY`` FEC settings |
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``ETHTOOL_MSG_FEC_NTF`` FEC settings |
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``ETHTOOL_MSG_MODULE_EEPROM_GET_REPLY`` read SFP module EEPROM |
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``ETHTOOL_MSG_STATS_GET_REPLY`` standard statistics |
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``ETHTOOL_MSG_PHC_VCLOCKS_GET_REPLY`` PHC virtual clocks info |
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``ETHTOOL_MSG_MODULE_GET_REPLY`` transceiver module parameters |
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======================================== ================================= |
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``GET`` requests are sent by userspace applications to retrieve device |
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information. They usually do not contain any message specific attributes. |
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Kernel replies with corresponding "GET_REPLY" message. For most types, ``GET`` |
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request with ``NLM_F_DUMP`` and no device identification can be used to query |
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the information for all devices supporting the request. |
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If the data can be also modified, corresponding ``SET`` message with the same |
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layout as corresponding ``GET_REPLY`` is used to request changes. Only |
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attributes where a change is requested are included in such request (also, not |
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all attributes may be changed). Replies to most ``SET`` request consist only |
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of error code and extack; if kernel provides additional data, it is sent in |
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the form of corresponding ``SET_REPLY`` message which can be suppressed by |
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setting ``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header. |
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Data modification also triggers sending a ``NTF`` message with a notification. |
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These usually bear only a subset of attributes which was affected by the |
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change. The same notification is issued if the data is modified using other |
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means (mostly ioctl ethtool interface). Unlike notifications from ethtool |
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netlink code which are only sent if something actually changed, notifications |
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triggered by ioctl interface may be sent even if the request did not actually |
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change any data. |
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``ACT`` messages request kernel (driver) to perform a specific action. If some |
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information is reported by kernel (which can be suppressed by setting |
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``ETHTOOL_FLAG_OMIT_REPLY`` flag in request header), the reply takes form of |
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an ``ACT_REPLY`` message. Performing an action also triggers a notification |
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(``NTF`` message). |
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Later sections describe the format and semantics of these messages. |
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STRSET_GET |
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========== |
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Requests contents of a string set as provided by ioctl commands |
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``ETHTOOL_GSSET_INFO`` and ``ETHTOOL_GSTRINGS.`` String sets are not user |
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writeable so that the corresponding ``STRSET_SET`` message is only used in |
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kernel replies. There are two types of string sets: global (independent of |
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a device, e.g. device feature names) and device specific (e.g. device private |
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flags). |
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Request contents: |
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+---------------------------------------+--------+------------------------+ |
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| ``ETHTOOL_A_STRSET_HEADER`` | nested | request header | |
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+---------------------------------------+--------+------------------------+ |
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| ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request | |
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+-+-------------------------------------+--------+------------------------+ |
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| | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | |
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+-+-+-----------------------------------+--------+------------------------+ |
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| | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | |
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+-+-+-----------------------------------+--------+------------------------+ |
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Kernel response contents: |
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+---------------------------------------+--------+-----------------------+ |
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| ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header | |
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+---------------------------------------+--------+-----------------------+ |
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| ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | array of string sets | |
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+-+-------------------------------------+--------+-----------------------+ |
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| | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set | |
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+-+-+-----------------------------------+--------+-----------------------+ |
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| | | ``ETHTOOL_A_STRINGSET_ID`` | u32 | set id | |
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+-+-+-----------------------------------+--------+-----------------------+ |
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| | | ``ETHTOOL_A_STRINGSET_COUNT`` | u32 | number of strings | |
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+-+-+-----------------------------------+--------+-----------------------+ |
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| | | ``ETHTOOL_A_STRINGSET_STRINGS`` | nested | array of strings | |
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+-+-+-+---------------------------------+--------+-----------------------+ |
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| | | | ``ETHTOOL_A_STRINGS_STRING+`` | nested | one string | |
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+-+-+-+-+-------------------------------+--------+-----------------------+ |
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| | | | | ``ETHTOOL_A_STRING_INDEX`` | u32 | string index | |
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+-+-+-+-+-------------------------------+--------+-----------------------+ |
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| | | | | ``ETHTOOL_A_STRING_VALUE`` | string | string value | |
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+-+-+-+-+-------------------------------+--------+-----------------------+ |
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| ``ETHTOOL_A_STRSET_COUNTS_ONLY`` | flag | return only counts | |
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+---------------------------------------+--------+-----------------------+ |
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Device identification in request header is optional. Depending on its presence |
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a and ``NLM_F_DUMP`` flag, there are three type of ``STRSET_GET`` requests: |
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- no ``NLM_F_DUMP,`` no device: get "global" stringsets |
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- no ``NLM_F_DUMP``, with device: get string sets related to the device |
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- ``NLM_F_DUMP``, no device: get device related string sets for all devices |
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If there is no ``ETHTOOL_A_STRSET_STRINGSETS`` array, all string sets of |
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requested type are returned, otherwise only those specified in the request. |
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Flag ``ETHTOOL_A_STRSET_COUNTS_ONLY`` tells kernel to only return string |
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counts of the sets, not the actual strings. |
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LINKINFO_GET |
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============ |
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Requests link settings as provided by ``ETHTOOL_GLINKSETTINGS`` except for |
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link modes and autonegotiation related information. The request does not use |
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any attributes. |
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Request contents: |
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==================================== ====== ========================== |
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``ETHTOOL_A_LINKINFO_HEADER`` nested request header |
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==================================== ====== ========================== |
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Kernel response contents: |
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==================================== ====== ========================== |
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``ETHTOOL_A_LINKINFO_HEADER`` nested reply header |
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``ETHTOOL_A_LINKINFO_PORT`` u8 physical port |
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``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address |
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``ETHTOOL_A_LINKINFO_TP_MDIX`` u8 MDI(-X) status |
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``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control |
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``ETHTOOL_A_LINKINFO_TRANSCEIVER`` u8 transceiver |
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==================================== ====== ========================== |
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Attributes and their values have the same meaning as matching members of the |
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corresponding ioctl structures. |
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``LINKINFO_GET`` allows dump requests (kernel returns reply message for all |
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devices supporting the request). |
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LINKINFO_SET |
|
============ |
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``LINKINFO_SET`` request allows setting some of the attributes reported by |
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``LINKINFO_GET``. |
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Request contents: |
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|
==================================== ====== ========================== |
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``ETHTOOL_A_LINKINFO_HEADER`` nested request header |
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``ETHTOOL_A_LINKINFO_PORT`` u8 physical port |
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``ETHTOOL_A_LINKINFO_PHYADDR`` u8 phy MDIO address |
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``ETHTOOL_A_LINKINFO_TP_MDIX_CTRL`` u8 MDI(-X) control |
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==================================== ====== ========================== |
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MDI(-X) status and transceiver cannot be set, request with the corresponding |
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attributes is rejected. |
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LINKMODES_GET |
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============= |
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Requests link modes (supported, advertised and peer advertised) and related |
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information (autonegotiation status, link speed and duplex) as provided by |
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``ETHTOOL_GLINKSETTINGS``. The request does not use any attributes. |
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Request contents: |
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==================================== ====== ========================== |
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``ETHTOOL_A_LINKMODES_HEADER`` nested request header |
|
==================================== ====== ========================== |
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Kernel response contents: |
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|
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========================================== ====== ========================== |
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``ETHTOOL_A_LINKMODES_HEADER`` nested reply header |
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``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status |
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``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes |
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``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes |
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``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s) |
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``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode |
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``ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG`` u8 Master/slave port mode |
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``ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE`` u8 Master/slave port state |
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========================================== ====== ========================== |
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For ``ETHTOOL_A_LINKMODES_OURS``, value represents advertised modes and mask |
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represents supported modes. ``ETHTOOL_A_LINKMODES_PEER`` in the reply is a bit |
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list. |
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``LINKMODES_GET`` allows dump requests (kernel returns reply messages for all |
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devices supporting the request). |
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LINKMODES_SET |
|
============= |
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|
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Request contents: |
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|
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========================================== ====== ========================== |
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``ETHTOOL_A_LINKMODES_HEADER`` nested request header |
|
``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status |
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``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes |
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``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes |
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``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 |
|
|
|
``ETHTOOL_LINK_EXT_STATE_MODULE`` Transceiver module issue |
|
================================================ ============================================ |
|
|
|
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 |
|
|
|
``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_REFERENCE_CLOCK_LOST`` The external clock signal for |
|
SerDes is too weak or |
|
unavailable. |
|
|
|
``ETHTOOL_LINK_EXT_SUBSTATE_BSI_SERDES_ALOS`` The received signal for |
|
SerDes is too weak because |
|
analog loss of signal. |
|
================================================================= ============================= |
|
|
|
Cable issue substates: |
|
|
|
=================================================== ============================================ |
|
``ETHTOOL_LINK_EXT_SUBSTATE_CI_UNSUPPORTED_CABLE`` Unsupported cable |
|
|
|
``ETHTOOL_LINK_EXT_SUBSTATE_CI_CABLE_TEST_FAILURE`` Cable test failure |
|
=================================================== ============================================ |
|
|
|
Transceiver module issue substates: |
|
|
|
=================================================== ============================================ |
|
``ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY`` The CMIS Module State Machine did not reach |
|
the ModuleReady state. For example, if the |
|
module is stuck at ModuleFault state |
|
=================================================== ============================================ |
|
|
|
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 |
|
``ETHTOOL_A_RINGS_RX_BUF_LEN`` u32 size of buffers on the ring |
|
``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` u8 TCP header / data split |
|
``ETHTOOL_A_RINGS_CQE_SIZE`` u32 Size of TX/RX CQE |
|
``ETHTOOL_A_RINGS_TX_PUSH`` u8 flag of TX Push mode |
|
==================================== ====== =========================== |
|
|
|
``ETHTOOL_A_RINGS_TCP_DATA_SPLIT`` indicates whether the device is usable with |
|
page-flipping TCP zero-copy receive (``getsockopt(TCP_ZEROCOPY_RECEIVE)``). |
|
If enabled the device is configured to place frame headers and data into |
|
separate buffers. The device configuration must make it possible to receive |
|
full memory pages of data, for example because MTU is high enough or through |
|
HW-GRO. |
|
|
|
``ETHTOOL_A_RINGS_TX_PUSH`` flag is used to enable descriptor fast |
|
path to send packets. In ordinary path, driver fills descriptors in DRAM and |
|
notifies NIC hardware. In fast path, driver pushes descriptors to the device |
|
through MMIO writes, thus reducing the latency. However, enabling this feature |
|
may increase the CPU cost. Drivers may enforce additional per-packet |
|
eligibility checks (e.g. on packet size). |
|
|
|
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 |
|
``ETHTOOL_A_RINGS_RX_BUF_LEN`` u32 size of buffers on the ring |
|
``ETHTOOL_A_RINGS_CQE_SIZE`` u32 Size of TX/RX CQE |
|
``ETHTOOL_A_RINGS_TX_PUSH`` u8 flag of TX Push mode |
|
==================================== ====== =========================== |
|
|
|
Kernel checks that requested ring sizes do not exceed limits reported by |
|
driver. Driver may impose additional constraints and may not suspport all |
|
attributes. |
|
|
|
|
|
``ETHTOOL_A_RINGS_CQE_SIZE`` specifies the completion queue event size. |
|
Completion queue events(CQE) are the events posted by NIC to indicate the |
|
completion status of a packet when the packet is sent(like send success or |
|
error) or received(like pointers to packet fragments). The CQE size parameter |
|
enables to modify the CQE size other than default size if NIC supports it. |
|
A bigger CQE can have more receive buffer pointers inturn NIC can transfer |
|
a bigger frame from wire. Based on the NIC hardware, the overall completion |
|
queue size can be adjusted in the driver if CQE size is modified. |
|
|
|
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 |
|
``ETHTOOL_A_COALESCE_USE_CQE_TX`` bool timer reset mode, Tx |
|
``ETHTOOL_A_COALESCE_USE_CQE_RX`` bool timer reset mode, Rx |
|
=========================================== ====== ======================= |
|
|
|
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). |
|
|
|
Timer reset mode (``ETHTOOL_A_COALESCE_USE_CQE_TX`` and |
|
``ETHTOOL_A_COALESCE_USE_CQE_RX``) controls the interaction between packet |
|
arrival and the various time based delay parameters. By default timers are |
|
expected to limit the max delay between any packet arrival/departure and a |
|
corresponding interrupt. In this mode timer should be started by packet |
|
arrival (sometimes delivery of previous interrupt) and reset when interrupt |
|
is delivered. |
|
Setting the appropriate attribute to 1 will enable ``CQE`` mode, where |
|
each packet event resets the timer. In this mode timer is used to force |
|
the interrupt if queue goes idle, while busy queues depend on the packet |
|
limit to trigger interrupts. |
|
|
|
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 |
|
``ETHTOOL_A_COALESCE_USE_CQE_TX`` bool timer reset mode, Tx |
|
``ETHTOOL_A_COALESCE_USE_CQE_RX`` bool timer reset mode, Rx |
|
=========================================== ====== ======================= |
|
|
|
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_GET |
|
================= |
|
|
|
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 |
|
======================================= ====== ========================== |
|
|
|
If ``ETHTOOL_A_MODULE_EEPROM_BANK`` is not specified, bank 0 is assumed. |
|
|
|
Kernel response contents: |
|
|
|
+---------------------------------------------+--------+---------------------+ |
|
| ``ETHTOOL_A_MODULE_EEPROM_HEADER`` | nested | reply header | |
|
+---------------------------------------------+--------+---------------------+ |
|
| ``ETHTOOL_A_MODULE_EEPROM_DATA`` | binary | 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 |
|
============================= ==== ==== |
|
|
|
PHC_VCLOCKS_GET |
|
=============== |
|
|
|
Query device PHC virtual clocks information. |
|
|
|
Request contents: |
|
|
|
==================================== ====== ========================== |
|
``ETHTOOL_A_PHC_VCLOCKS_HEADER`` nested request header |
|
==================================== ====== ========================== |
|
|
|
Kernel response contents: |
|
|
|
==================================== ====== ========================== |
|
``ETHTOOL_A_PHC_VCLOCKS_HEADER`` nested reply header |
|
``ETHTOOL_A_PHC_VCLOCKS_NUM`` u32 PHC virtual clocks number |
|
``ETHTOOL_A_PHC_VCLOCKS_INDEX`` s32 PHC index array |
|
==================================== ====== ========================== |
|
|
|
MODULE_GET |
|
========== |
|
|
|
Gets transceiver module parameters. |
|
|
|
Request contents: |
|
|
|
===================================== ====== ========================== |
|
``ETHTOOL_A_MODULE_HEADER`` nested request header |
|
===================================== ====== ========================== |
|
|
|
Kernel response contents: |
|
|
|
====================================== ====== ========================== |
|
``ETHTOOL_A_MODULE_HEADER`` nested reply header |
|
``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` u8 power mode policy |
|
``ETHTOOL_A_MODULE_POWER_MODE`` u8 operational power mode |
|
====================================== ====== ========================== |
|
|
|
The optional ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` attribute encodes the |
|
transceiver module power mode policy enforced by the host. The default policy |
|
is driver-dependent, but "auto" is the recommended default and it should be |
|
implemented by new drivers and drivers where conformance to a legacy behavior |
|
is not critical. |
|
|
|
The optional ``ETHTHOOL_A_MODULE_POWER_MODE`` attribute encodes the operational |
|
power mode policy of the transceiver module. It is only reported when a module |
|
is plugged-in. Possible values are: |
|
|
|
.. kernel-doc:: include/uapi/linux/ethtool.h |
|
:identifiers: ethtool_module_power_mode |
|
|
|
MODULE_SET |
|
========== |
|
|
|
Sets transceiver module parameters. |
|
|
|
Request contents: |
|
|
|
====================================== ====== ========================== |
|
``ETHTOOL_A_MODULE_HEADER`` nested request header |
|
``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` u8 power mode policy |
|
====================================== ====== ========================== |
|
|
|
When set, the optional ``ETHTOOL_A_MODULE_POWER_MODE_POLICY`` attribute is used |
|
to set the transceiver module power policy enforced by the host. Possible |
|
values are: |
|
|
|
.. kernel-doc:: include/uapi/linux/ethtool.h |
|
:identifiers: ethtool_module_power_mode_policy |
|
|
|
For SFF-8636 modules, low power mode is forced by the host according to table |
|
6-10 in revision 2.10a of the specification. |
|
|
|
For CMIS modules, low power mode is forced by the host according to table 6-12 |
|
in revision 5.0 of the specification. |
|
|
|
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`` |
|
n/a ``ETHTOOL_MSG_PHC_VCLOCKS_GET`` |
|
n/a ``ETHTOOL_MSG_MODULE_GET`` |
|
n/a ``ETHTOOL_MSG_MODULE_SET`` |
|
=================================== =====================================
|
|
|