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| author | Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> | 2012-04-03 10:41:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-03 23:38:55 +0200 |
| commit | 5d6bd8619db5a30668093c1b2967674645cf0736 (patch) | |
| tree | ced763e4924f0aa3d153a5edd7a56ae8cd87af47 /Documentation/networking/ip-sysctl.txt | |
| parent | tcp: allow splice() to build full TSO packets (diff) | |
| download | linux-5d6bd8619db5a30668093c1b2967674645cf0736.tar.xz linux-5d6bd8619db5a30668093c1b2967674645cf0736.zip | |
TCP: update ip_local_port_range documentation
The explanation of ip_local_port_range in
Documentation/networking/ip-sysctl.txt contains several factual
errors:
- The default value of ip_local_port_range does not depend on the
amount of memory available in the system.
- tcp_tw_recycle is not enabled by default.
- 1024-4999 is not the default value.
- Etc.
Clean up the mess.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index ad3e80e17b4f..bd80ba5847d2 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -604,15 +604,8 @@ IP Variables: ip_local_port_range - 2 INTEGERS Defines the local port range that is used by TCP and UDP to choose the local port. The first number is the first, the - second the last local port number. Default value depends on - amount of memory available on the system: - > 128Mb 32768-61000 - < 128Mb 1024-4999 or even less. - This number defines number of active connections, which this - system can issue simultaneously to systems not supporting - TCP extensions (timestamps). With tcp_tw_recycle enabled - (i.e. by default) range 1024-4999 is enough to issue up to - 2000 connections per second to systems supporting timestamps. + second the last local port number. The default values are + 32768 and 61000 respectively. ip_local_reserved_ports - list of comma separated ranges Specify the ports which are reserved for known third-party |