Author: jfv
Date: Wed Aug 15 17:12:40 2012
New Revision: 239304
URL: http://svn.freebsd.org/changeset/base/239304
Log:
Customer report of a panic on boot due to the old
"m_getjcl:invalid cluster type" that occurred some
time back with the igb driver. This happens often when
booting over the net. I believe the NIC hardware is left
in a warm state when handed over to the driver, and a stray
RX interrupt happens earlier than the code is prepared for
it to happen. This change was verified to fix the problem,
its kind of a bandaid... but it is similar to what was done
in the igb code.
Modified:
head/sys/dev/e1000/if_em.c
Modified: head/sys/dev/e1000/if_em.c
==============================================================================
--- head/sys/dev/e1000/if_em.c Wed Aug 15 16:19:39 2012 (r239303)
+++ head/sys/dev/e1000/if_em.c Wed Aug 15 17:12:40 2012 (r239304)
@@ -1570,6 +1570,8 @@ em_msix_rx(void *arg)
bool more;
++rxr->rx_irq;
+ if (!(adapter->ifp->if_drv_flags & IFF_DRV_RUNNING))
+ return;
more = em_rxeof(rxr, adapter->rx_process_limit, NULL);
if (more)
taskqueue_enqueue(rxr->tq, &rxr->rx_task);
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