Date: Sun, 29 Nov 2009 16:30:37 -0800 From: Pyun YongHyeon <pyunyh@gmail.com> To: Brett Glass <brett@lariat.net> Cc: freebsd-usb@freebsd.org Subject: Re: usb/140883: [axe] USB gigabit ethernet hangs after short period of traffic Message-ID: <20091130003037.GA1123@michelle.cdnetworks.com> In-Reply-To: <200911300004.RAA15864@lariat.net> References: <200911290250.nAT2o3L7086305@freefall.freebsd.org> <20091129213831.GB1128@michelle.cdnetworks.com> <200911300004.RAA15864@lariat.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Nov 29, 2009 at 04:51:09PM -0700, Brett Glass wrote: > At 02:38 PM 11/29/2009, Pyun YongHyeon wrote: > > >I'm not sure buffer size allowed in driver is 4K. Long time ago I > >increased Rx buffer size to 16KB from 2KB for 88178/88772. That > >change was essential to get 220Mbps for 88178/88772 on Rx. The > >patch was not made into 8.0-RELEASE though. > > If not, it certainly ought to get into 8.1-RELEASE and 7.3-RELEASE... > so long as it doesn't cause the USB stack to freeze up. 16 KB is a > much more reasonable buffer size. > Actually 16KB was controller default buffer size of AX88178. axe(4) just used to set 2KB for Rx buffer which could be safely set for all ASIX controllers. > By the way, I've done some stress testing with the patch I posted, and > it seems very solid. It appears that the AX88772A chip can safely be > treated like an AX88772. > That's great! > --Brett Glass > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20091130003037.GA1123>