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Date: Fri, 02 Oct 2009 11:36:37 -0700
From: Rudy <crapsh@monkeybrains.net>
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Cc: freebsdnic@mailbox.cps.intel.com, freebsd-stable@freebsd.org
Subject: Re: em0 watchdog timeouts
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I noticed something interesting.

I set the rc_int_delay to 0:
 sysctl dev.em.5.rx_int_delay=0

Chcking via sysctl dev.em.5.debug=1 shows ex_int_delay is indeed 0:
 Oct  1 17:32:41 mango kernel: em5: rx_int_delay = 0, rx_abs_int_delay = 66

After a watchdog event, sysctl dev.em.5.debug=1 shows ex_int_delay is
now 32:
 Oct  2 11:29:49 mango kernel: em5: rx_int_delay = 32, rx_abs_int_delay = 66

However, running sysctl dev.em.5 shows it as 0:
dev.em.5.rx_int_delay: 0
dev.em.5.tx_int_delay: 66

Seems like the adapter and the kernel don't agree on the rx_int_delay value.

Rudy