Date: Fri, 12 Jun 2009 17:38:46 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: Navdeep Parhar <np@FreeBSD.org> Cc: Pyun YongHyeon <pyunyh@gmail.com>, FreeBSD net mailing list <freebsd-net@freebsd.org>, "George V. Neville-Neil" <gnn@freebsd.org>, Michael Tuexen <tuexen@freebsd.org>, Andrew Thompson <thompsa@freebsd.org>, Jack F Vogel <jfv@freebsd.org>, Andrew Gallatin <gallatin@freebsd.org>, Pyun YongHyeon <yongari@freebsd.org> Subject: Re: Ethernet NIC drivers depending unconditionally on INET Message-ID: <20090612173728.B22887@maildrop.int.zabbadoz.net> In-Reply-To: <20090612170703.GA994@hub.freebsd.org> References: <20090611184555.J22887@maildrop.int.zabbadoz.net> <20090612013406.GB72855@michelle.cdnetworks.co.kr> <20090612100900.M22887@maildrop.int.zabbadoz.net> <20090612170703.GA994@hub.freebsd.org>
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On Fri, 12 Jun 2009, Navdeep Parhar wrote: > On Fri, Jun 12, 2009 at 10:56:31AM +0000, Bjoern A. Zeeb wrote: >> On Fri, 12 Jun 2009, Pyun YongHyeon wrote: >> >> Hi, >> >>> Yeah, there are no checksum offloading support for IPv6 under >>> FreeBSD so there are no cases the frames are IPv6 when >>> CSUM_IP/CSUM_TCP/CSUM_UDP/CSUM_TSO was set. >> >> The thing that scared me was sys/netinet/tcp_subr.c:tcp_maxmtu6(). >> >> What I had missed was the CSUM_TSO6 (the 6 at the end) part. >> grepping through the tree I am even wondering a lot more now when I >> see what cxgb(4) is doing with that;) > > I can't find a CSUM_TSO6 in head, did you mean IFCAP_TSO6? yes I did. > cxgb(4) > will not let you enable IFCAP_TSO6 on the interface. It has always > been disallowed as far as I can tell. Yes, you have it in the logic bu you define it to 0;) #define IFCAP_TSO6 0x0 /bz -- Bjoern A. Zeeb The greatest risk is not taking one.
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