Date: Sat, 19 Apr 2014 19:19:01 +0200 From: Andrea Venturoli <ml@netfence.it> To: John Nielsen <lists@jnielsen.net> Cc: freebsd-net@freebsd.org Subject: Re: Network troubles after 8.3 -> 8.4 upgrade Message-ID: <5352B005.8090405@netfence.it> In-Reply-To: <CDFEE4B3-CFAD-4E99-B5FE-731FB3C3C6FC@jnielsen.net> References: <53503BC3.6040806@netfence.it> <CDFEE4B3-CFAD-4E99-B5FE-731FB3C3C6FC@jnielsen.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On 04/17/14 23:45, John Nielsen wrote: Thanks for answering John. > My first thought was TSO as well, since I've seen the symptoms you describe a few times on systems running 10.0. > Do you use IPFW or any kind of NAT on this system? Yes, I use ipfw to firewall, to divert packets to natd and also to forward specific traffic to three different gateways. I think I added a "10 allow ip from any to any" rule for a brief period of time to exclude ipfw's interference, but I'm not sure and eventually I'll try again next week. > When an application encounters a network problem, > does it report or log anything at all? Simply a timeout. > Anything in the kernel log/dmesg? I wished so; unfortunately, as I wrote, unless there's some sysctl to tweak I get no suck info. > Otherwise my only other thought would be the driver. > Can you try reverting only the em(4) driver back to 8.3? Worth a try I guess! > Build modules and a kernel without em(4) from unmodified 8.4 src, load em(4) as a module, > confirm that the problem persists. Ok, easy. > Replace the contents of src/sys/dev/e1000, src/sys/modules/em and > src/sys/conf/files with those from an 8.3 src tree (or otherwise > revert revision 247430), rebuild em module, unload/reload or reboot, > see if problem goes away. (Could be somewhat complicated by the fact > that you also have igb interfaces which also use code from the e1000 > directory, but rather than speculate I'll leave solving that as an > exercise for someone else.) Hmmm, sounds a bit complicated... would simply dropping if_em.ko in from a 8.3 box work? bye & Thanks av.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?5352B005.8090405>