Date: Sun, 29 Nov 2009 17:03:44 -0700 From: Brett Glass <brett@lariat.net> To: pyunyh@gmail.com Cc: usb@freebsd.org Subject: Re: ASIX USB-to-Ethernet drivers Message-ID: <200911300004.RAA15867@lariat.net> In-Reply-To: <20091129212335.GA1128@michelle.cdnetworks.com> References: <200911282040.NAA05930@lariat.net> <20091129212335.GA1128@michelle.cdnetworks.com>
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At 02:23 PM 11/29/2009, Pyun YongHyeon wrote: >I think the large number of interrupts has nothing to do with >axe(4). Almost all USB ethernet controllers are poorly designed >to save cost so you can't expect reasonable performance from it and >you should have fast CPU to copy received frames in a buffer. >It's worse than rl(4) controllers. Are there any that are better? I have several machines here that I will be using as embedded systems. They have one Ethernet interface each, and I need some of them to have two. The only other non-USB ports on these machines are video and CompactFlash. I've thought about using VLAN tagging and VLAN switch to double up the Ethernet port, but this is quite expensive. So, I need the best USB Ethernet I can get. I chose the AX88772A because it seems to be a better solution than the Davicom DM9601 (which is USB 1.0 only). The AX88178 has more buffer space, but I am having trouble finding reasonably priced adapters that use it. --Brett Glass
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