Date: Tue, 15 Apr 2008 22:00:09 +0300 From: "Mr Y" <yonyossef.lists@gmail.com> To: freebsd-questions@freebsd.org Subject: mbuf chains / records in networking Message-ID: <20def4870804151200u49f54563scabd8c19460c20b5@mail.gmail.com>
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I'm porting an Ethernet driver LRO mechanism (Large Recieve Offload) from Linux to FreeBSD. I learned a bit about mbuf chains and records, but i couldn't understand whether the OS is capable of "eating" a whole mbuf record (mbuf linked using m_cat, by their m_nextpkt pointer) on the RX side. Can I simply concat my incoming network mbufs, each one with his own TCP/IP headers, and push the whole record up the stack in one operation? or should I strip all the packets and build a single TCP/IP header in the first mbuf before I push the record up? Thanks -Yony
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