From owner-freebsd-net Fri Jan 3 4:17:50 2003 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 35E4237B401 for ; Fri, 3 Jan 2003 04:17:49 -0800 (PST) Received: from ares.cs.Virginia.EDU (ares.cs.Virginia.EDU [128.143.137.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4FEC843F13 for ; Fri, 3 Jan 2003 04:17:48 -0800 (PST) (envelope-from nicolas@cs.virginia.edu) Received: from arachnion.cs.Virginia.EDU (arachnion.cs.Virginia.EDU [128.143.136.20]) by ares.cs.Virginia.EDU (8.9.3+Sun/8.9.2/UVACS-2000040300) with ESMTP id HAA11623 for ; Fri, 3 Jan 2003 07:17:47 -0500 (EST) Received: from localhost (nc2y@localhost) by arachnion.cs.Virginia.EDU (8.9.2/8.9.2) with ESMTP id HAA01268 for ; Fri, 3 Jan 2003 07:17:47 -0500 (EST) X-Authentication-Warning: arachnion.cs.Virginia.EDU: nc2y owned process doing -bs Date: Fri, 3 Jan 2003 07:17:47 -0500 (EST) From: Nicolas Christin X-X-Sender: nc2y@arachnion.cs.Virginia.EDU To: freebsd-net@FreeBSD.ORG Subject: Re: Quad ethernet question In-Reply-To: Message-ID: Organization: University of Virginia - CS Dept. MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, 3 Jan 2003, Nicolas Christin wrote: > If there is interest I can try to dig up the old email in which I was > describing the problem... Following is a more accurate description of the problem I saw with the card mentioned in this thread. I don't seem to have a printout of the available mbuf's at hand, but I distinctly remember that everything looked fine on that front. --Nicolas I am experiencing some problems with the sf driver, which I use on the following quad card: Adaptec ANA-62044 SGLQuartet 64 10/100Base TX The driver works just fine most of the time, I can transmit/receive data on all four ports. However, when the link governed by the sf driver gets overloaded, I sometimes get the following error: nc2y@tin $ ping 10.0.4.2 PING 10.0.4.2 (10.0.4.2): 56 data bytes ping: sendto: No buffer space available where sf0 is configured as follows: nc2y@tin $ ifconfig sf0 sf0: flags=8843 mtu 1500 inet 10.0.4.1 netmask 0xffffff00 broadcast 10.0.4.255 inet6 fe80::200:d1ff:feee:3ff1%sf0 prefixlen 64 scopeid 0x3 ether 00:00:d1:ee:3f:f1 media: 100baseTX status: active supported media: autoselect 100baseTX 100baseTX 10baseT/UTP 10baseT/UTP none Interestingly enough, when pinging 10.0.4.1 from 10.0.4.2, I do not get any error, and ICMP replies actually manage to make it. This experiment was run on an Intel Pentium III running FreeBSD 4.3. (I don't think there are any changes to the sf driver in FreeBSD 4.4.) [Note: the same problem is present in 4.5.] -- Nicolas Christin Ph.D. Candidate, University of Virginia, Computer Science http://www.cs.virginia.edu/~nicolas To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message