Add description of new PHY tunable Fast Link Down to ethtool man page. v2: - improve wording
Signed-off-by: Heiner Kallweit <hkallwe...@gmail.com> --- ethtool.8.in | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/ethtool.8.in b/ethtool.8.in index b878521..868af35 100644 --- a/ethtool.8.in +++ b/ethtool.8.in @@ -355,10 +355,16 @@ ethtool \- query or control network driver and hardware settings .A1 on off .BN count .RB ] +.RB [ +.B fast\-link\-down +.A1 on off +.BN msecs +.RB ] .HP .B ethtool \-\-get\-phy\-tunable .I devname .RB [ downshift ] +.RB [ fast-link-down ] .HP .B ethtool \-\-reset .I devname @@ -1069,12 +1075,22 @@ Sets the PHY tunable parameters. .RS 4 .TP .A2 downshift on off -Specifies whether downshift should be enabled +Specifies whether downshift should be enabled. .TS nokeep; lB l. .BI count \ N -Sets the PHY downshift re-tries count. + Sets the PHY downshift re-tries count. +.TE +.TP +.A2 fast-link-down on off +Specifies whether Fast Link Down should be enabled and time until link down (if supported). +.TS +nokeep; +lB l. +.BI msecs \ N + Sets the period after which the link is reported as down. Note that the PHY may choose + the closest supported value. Only on reading back the tunable do you get the actual value. .TE .PD .RE @@ -1090,6 +1106,14 @@ Link speed downshift after N failed 1000BASE-T auto-negotiation attempts. Downshift is useful where cable does not have the 4 pairs instance. Gets the PHY downshift count/status. +.TP +.B fast\-link\-down +Depending on the mode it may take 0.5s - 1s until a broken link is reported as down. +In certain use cases a link-down event needs to be reported as soon as possible. +Some PHYs support a Fast Link Down Feature and may allow configuration of the delay +before a broken link is reported as being down. + +Gets the PHY Fast Link Down status / period. .RE .TP .B \-\-reset -- 2.21.0
