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>

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