kern/124127: [msk] watchdog timeout (missed Tx interrupts) -- recovering

[Mark Atkinson]

The following reply was made to PR kern/124127; it has been noted by GNATS.

From: Mark Atkinson <atkin901 at yahoo.com>
To: pyunyh at gmail.com
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/124127: [msk] watchdog timeout (missed Tx interrupts) -- recovering
Date: Thu, 29 Oct 2009 10:47:47 -0700 (PDT)

 ----- Original Message ----
 
 From: Pyun YongHyeon <pyunyh at gmail.com>
 Sent: Thu, October 29, 2009 9:49:09 AM
 Subject: Re: kern/124127: [msk] watchdog timeout (missed Tx interrupts) -- recovering
 
 >I think it's not a bug of msk(4). Qin Li fixed the bug in arp code.
 >See r198301.
 
 Thanks I saw the intr call in the trace and assumed wrong, the 'lltable'
 should have tipped me off.
 
 >For watchdog timeout issues on 88E8053 controller, did you ever try
 >disabling MSI? 
 
 I haven't tried that lately in -current, last time I did that msk did 
 not work at all.  Will retry and report back.
 
 > msk(4) was changed a lot since 7.0-RELEASE to
 >support newer controllers and added several workarounds to address
 >silicon bugs. So don't blindly apply experimental patches to your
 >controller.
 
 Yes, this box runs -current constantly, only recently did I have to 
 give up my dual Intel adapter and go back to using the on-board
 pci-e yukon, and thus re-experiencing this issue.
 
 > 88E8053 also has a couple of hardware bugs but I guess
 >msk(4) already incorporated required workarounds. So if you can
 >reliably reproduce watchdog timeouts please let me know. 
 
 It still repros on -current, hence me trying out the experimental
 patches in the PR and reporting back.   As I reported in this PR
 earlier I could still hit the watchdog after a week of runtime, but
 as of now I don't have a reliable repro.
 
 BTW thanks for all your hard work on hardware NIC support.  Very
 much appreciated.