ipv4: Raise tcp PMTU probe mss base size
authorFan Du <fan.du@intel.com>
Fri, 6 Mar 2015 03:18:22 +0000 (11:18 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 6 Mar 2015 19:57:41 +0000 (14:57 -0500)
commitdcd8fb8533ceb493146ce030d15f7965b82d0c27
tree9e33b585cda6ed2cbebc6cf4841fc04eafb58e41
parentaaa4e70404c7b38a8792dc69af54afd7218b2ec0
ipv4: Raise tcp PMTU probe mss base size

Quotes from RFC4821 7.2.  Selecting Initial Values

   It is RECOMMENDED that search_low be initially set to an MTU size
   that is likely to work over a very wide range of environments.  Given
   today's technologies, a value of 1024 bytes is probably safe enough.
   The initial value for search_low SHOULD be configurable.

Moreover, set a small value will introduce extra time for the search
to converge. So set the initial probe base mss size to 1024 Bytes.

Signed-off-by: Fan Du <fan.du@intel.com>
Acked-by: John Heffner <johnwheffner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/tcp.h