Date: Tue, 10 Jun 2008 11:03:19 +0300 From: "Yony Yossef" <yonyossef.lists@gmail.com> To: freebsd-net@freebsd.org Subject: TCP messages go OUT OF ORDER on FreeBSD 7 Message-ID: <20def4870806100103o6fcc70e3t78adf8f94d0b3b47@mail.gmail.com>
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Hi All. I'm working on a 10GigE driver for FreeBSD 7, supporting both LRO and TSO (LSO). I get a stable connection enabling LRO alone and TSO alone, but when I enable both offloads I get OUT OF ORDER packets on the sender side. Meaning the sending OS sends the same packet several times without getting any ACKs in between. The wireshark timestamps show that the sender did not even wait too long in order to retransmit the packets, there is only a 10-20 microsecs gap between the first and second sends of the same packet. I'm a TCP/IP newbee, can anybody explain to me how can this happen? Yony
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