diff options
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index c60afba69e3c..76a411d3102d 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -185,6 +185,7 @@ Userspace to kernel: ``ETHTOOL_MSG_LINKMODES_GET`` get link modes info ``ETHTOOL_MSG_LINKMODES_SET`` set link modes info ``ETHTOOL_MSG_LINKSTATE_GET`` get link state + ``ETHTOOL_MSG_DEBUG_GET`` get debugging settings ===================================== ================================ Kernel to userspace: @@ -196,6 +197,7 @@ Kernel to userspace: ``ETHTOOL_MSG_LINKMODES_GET_REPLY`` link modes info ``ETHTOOL_MSG_LINKMODES_NTF`` link modes notification ``ETHTOOL_MSG_LINKSTATE_GET_REPLY`` link state info + ``ETHTOOL_MSG_DEBUG_GET_REPLY`` debugging settings ===================================== ================================ ``GET`` requests are sent by userspace applications to retrieve device @@ -423,6 +425,36 @@ define their own handler. devices supporting the request). +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). + + Request translation =================== @@ -441,7 +473,7 @@ have their netlink replacement yet. ``ETHTOOL_GREGS`` n/a ``ETHTOOL_GWOL`` n/a ``ETHTOOL_SWOL`` n/a - ``ETHTOOL_GMSGLVL`` n/a + ``ETHTOOL_GMSGLVL`` ``ETHTOOL_MSG_DEBUG_GET`` ``ETHTOOL_SMSGLVL`` n/a ``ETHTOOL_NWAY_RST`` n/a ``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET`` |