Date: Thu, 2 Apr 2009 23:22:05 -0300 From: "Luiz Otavio O Souza" <lists.br@gmail.com> To: "Thomas Wahyudi" <thomas@sanbe-farma.com>, <freebsd-current@freebsd.org> Subject: Re: Setting the mss for socket Message-ID: <B57379C05A9B4BCB95E376C807735C02@adnote989> References: <3FD46C21A487490FB15B89E890790121@adnote989><49D4C9A0.9000804@freebsdbrasil.com.br> <49D56212.1000702@sanbe-farma.com>
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> Patrick Tracanelli wrote: >> Luiz Otavio O Souza escreveu: >>> Hello hackers, >>> >>> Is there a way to set the mss for a socket ? Like you can do in linux >>> with setsockopt(TCP_MAXSEG) ? >>> >>> So i can set the maximum size of packets (or sort of) from a simple >>> userland program. >>> > you mean sysctl -w net.inet.tcp.mssdflt=512 ? Not really... I don't want this to be a system wide option, i need this to be able to generate some traffic under a certain pattern of packet sizes. I really should read the code for more than 30 minutes... it's simple than i first think, i already have a simple patch for this, but it is too ugly for anything more than get iperf running... This is the patch (just for reference - may work for someone else): http://pastebin.com/m706da25b And the iperf patch: http://pastebin.com/m2f8f1100 Luiz
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