Date: Sun, 05 Apr 2015 14:53:22 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199174] em tx and rx hang Message-ID: <bug-199174-8-Qobh0SSUok@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-199174-8@https.bugs.freebsd.org/bugzilla/> References: <bug-199174-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199174 --- Comment #1 from david.keller@litchis.fr --- The card is definitely not sending: 1) dev.em.0.queue0.tx_irq is *not* increasing, so no signal from the card that data has been sent 2) hence sysctl dev.em.0.debug=1 shows that TX descriptors avail is decreasing 3) when it drops bellow EM_MAX_SCATTER, em_txeof() is finally called: https://svnweb.freebsd.org/base/releng/10.1/sys/dev/e1000/if_em.c?view=markup#l962 4) em_txoef() examines descriptors and detects that the card has not processed any of them and marks the queue as EM_QUEUE_HUNG: https://svnweb.freebsd.org/base/releng/10.1/sys/dev/e1000/if_em.c?view=markup#l3925 5) The queue status is read and the card reset is performed: https://svnweb.freebsd.org/base/releng/10.1/sys/dev/e1000/if_em.c?view=markup#l2297 -- You are receiving this mail because: You are the assignee for the bug.
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