Date: Mon, 05 Dec 2011 15:16:28 +0100 From: Andre Oppermann <andre@freebsd.org> To: Jack Vogel <jfvogel@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: VLAN HWTSO question/problem Message-ID: <4EDCD23C.8050706@freebsd.org> In-Reply-To: <CAFOYbc=JbAUbqJmsNUoRo_anSomvSLz_O-pR%2B49_f-i5Oy-tVQ@mail.gmail.com> References: <CAFOYbc=JbAUbqJmsNUoRo_anSomvSLz_O-pR%2B49_f-i5Oy-tVQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 02.12.2011 21:06, Jack Vogel wrote: > I have just discovered during some validation testing on the em driver, > that if HWTSO is enabled > at the same time as VLAN_HWTAGGING and/or VLAN_HWFILTER that its broken. > > Looking at the vlan source its not obvious why this would be the case, but > netperf just fails completely. > I can turn TAGGING off and I can get TSO, or turn off TSO and get > TAGGING/FILTERING, but not > both :( > > My tester only has 8.2 to try this on, not sure if its a bug or a design > limitation, can someone > enlighten me? At the moment I'm thinking of just turning HWTSO off by > default? Maybe the HW or drive chokes on the overall ethernet frame being longer than 64K due to the VLAN header even though the IP packet part stays within the limits? -- Andre
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4EDCD23C.8050706>