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| author | Andrew Lunn <andrew@lunn.ch> | 2020-05-27 01:21:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-27 09:22:21 +0300 |
| commit | f2bc8ad31a7f814237bc6301d59296d76505a688 (patch) | |
| tree | 738fb4f9aa7157772793f5c7c5febbedb6d828f4 /Documentation/networking/ethtool-netlink.rst | |
| parent | 0c9bcc1d2394acef2c6e89e652d984cc845c7bea (diff) | |
| download | linux-f2bc8ad31a7f814237bc6301d59296d76505a688.tar.xz | |
net: ethtool: Allow PHY cable test TDR data to configured
Allow the user to configure where on the cable the TDR data should be
retrieved, in terms of first and last sample, and the step between
samples. Also add the ability to ask for TDR data for just one pair.
If this configuration is not provided, it defaults to 1-150m at 1m
intervals for all pairs.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
v3:
Move the TDR configuration into a structure
Add a range check on step
Use NL_SET_ERR_MSG_ATTR() when appropriate
Move TDR configuration into a nest
Document attributes in the request
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ethtool-netlink.rst')
| -rw-r--r-- | Documentation/networking/ethtool-netlink.rst | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst index dae36227d590..d42661b91128 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -1023,9 +1023,25 @@ Start a cable test and report raw TDR data Request contents: - ==================================== ====== ========================== - ``ETHTOOL_A_CABLE_TEST_TDR_HEADER`` nested request header - ==================================== ====== ========================== + +--------------------------------------------+--------+-----------------------+ + | ``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: |