Date: Fri, 21 Sep 2001 17:54:33 -0700 (PDT) From: Lamont Granquist <lamont@scriptkiddie.org> To: <stable@FreeBSD.ORG> Subject: xl0 tx underrun / watchdog errors Message-ID: <20010921173030.I13955-100000@coredump.scriptkiddie.org> In-Reply-To: <20010921152009.D980@blossom.cjclark.org>
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When doing an NMAP scan on a FreeBSD 4.4 (RELENG_4_4 Tag) Dell Lattitude C600 (as the target of the scan) I get the following errors: Sep 21 17:28:00 segflt /kernel: xl0: transmission error: 90 Sep 21 17:28:00 segflt /kernel: xl0: tx underrun, increasing tx start threshold to 900 bytes Sep 21 17:28:01 segflt /kernel: xl0: transmission error: 90 Sep 21 17:28:01 segflt /kernel: xl0: tx underrun, increasing tx start threshold to 960 bytes Sep 21 17:28:05 segflt /kernel: xl0: transmission error: 90 Sep 21 17:28:05 segflt /kernel: xl0: tx underrun, increasing tx start threshold to 1020 bytes Sep 21 17:28:10 segflt /kernel: xl0: watchdog timeout Sep 21 17:28:13 segflt /kernel: xl0: transmission error: 90 Sep 21 17:28:13 segflt /kernel: xl0: tx underrun, increasing tx start threshold to 120 bytes Sep 21 17:28:18 segflt /kernel: xl0: watchdog timeout Sep 21 17:28:20 segflt /kernel: xl0: transmission error: 90 Sep 21 17:28:20 segflt /kernel: xl0: tx underrun, increasing tx start threshold to 120 bytes This is demonstrated easiest with: nmap -T Insane -sS -p 1- 192.168.69.10 Although -T Normal will also produce these errors. And I have set: sysctl -w net.inet.icmp.icmplim=200 (default) The dmesg output for the xl0 driver is: xl0: <3Com 3c556 Fast Etherlink XL> port 0xd400-0xd4ff mem 0xfbffd800-0xfbffd87f,0xfbffdc00-0xfbffdc7f irq 11 at device 16.0 on pci0 xl0: Ethernet address: 00:01:03:82:df:00 miibus0: <MII bus> on xl0 I don't think that that behavior occured under the 4.3-ish -STABLE builds I had on here previously (at least I haven't noticed it before, have reason to believe I've scanned this machine previously and can't find it in my old logfiles -- i could be mistaken about having scanned this machine before though). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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