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authorMichael Kerrisk <mtk.manpages@gmail.com>2017-05-22 14:11:07 +0200
committerMichael Kerrisk <mtk.manpages@gmail.com>2017-05-22 14:11:07 +0200
commitcb4975dfbe30e799c95eed59b1d702e9893c985a (patch)
tree37349d58b207bf6910d80d0d29cd1bb776db89d1 /man7
parente0a73a311f2cd628e1780d3567ddf0531e303211 (diff)
downloadman-pages-cb4975dfbe30e799c95eed59b1d702e9893c985a.tar.gz
tcp.7: Document value '2' for tcp_timestamps
Since Linux 4.10, the value '2' is meaningful for tcp_timestamps Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man7')
-rw-r--r--man7/tcp.718
1 files changed, 16 insertions, 2 deletions
diff --git a/man7/tcp.7 b/man7/tcp.7
index 94ab356081..e654f02420 100644
--- a/man7/tcp.7
+++ b/man7/tcp.7
@@ -840,9 +840,23 @@ For recommended alternatives see
and
.IR tcp_abort_on_overflow .
.TP
-.IR tcp_timestamps " (Boolean; default: enabled; since Linux 2.2)"
+.IR tcp_timestamps " (integer; default: 1; since Linux 2.2)"
.\" Since 2.1.36
-Enable RFC\ 1323 TCP timestamps.
+Set to one of the following values to enable or disable RFC\ 1323
+TCP timestamps:
+.RS
+.IP 0 3
+Disable timestamps.
+.IP 1
+Enable timestamps as defined in RFC1323 and use random offset for
+each connection rather than only using the current time.
+.IP 2
+As for the value 1, but without random offsets.
+.\" commit 25429d7b7dca01dc4f17205de023a30ca09390d0
+Setting
+.I tcp_timestamps
+to this value is meaningful since Linux 4.10.
+.RE
.TP
.IR tcp_tso_win_divisor " (integer; default: 3; since Linux 2.6.9)"
This parameter controls what percentage of the congestion window