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-rw-r--r--ethtool.813
1 files changed, 12 insertions, 1 deletions
diff --git a/ethtool.8 b/ethtool.8
index 679f6bc..bffde30 100644
--- a/ethtool.8
+++ b/ethtool.8
@@ -126,6 +126,8 @@ ethtool \- Display or change ethernet card settings
.B ethtool \-d|\-\-register\-dump
.I ethX
.B2 raw on off
+.RB [ file
+.IR name ]
.B ethtool \-e|\-\-eeprom\-dump
.I ethX
@@ -244,7 +246,16 @@ queries the specified ethernet device for associated driver information.
.TP
.B \-d \-\-register\-dump
retrieves and prints a register dump for the specified ethernet device.
-When raw is enabled, then it dumps the raw register data to stdout.
+The register format for some devices is known and decoded others
+are printed in hex.
+When
+.I raw
+is enabled, then it dumps the raw register data to stdout.
+If
+.I file
+is specified, then use contents of previous raw register dump, rather
+than reading from the device.
+
.TP
.B \-e \-\-eeprom\-dump
retrieves and prints an EEPROM dump for the specified ethernet device.