On 12/25/2012 4:31 AM, Ryan Stone wrote:
I don't believe that this is fixed in later versions of the driver. The
problem is that when the interface loses link the transmit queue can fill
up. Once that happens the driver never gets any more calls from the network
stack to make it send packets. Pinging the interface fixes it because the
driver processes rx.and tx from the same context, so when it receives a
packet it starts transmitting again.
The patch that I sent fixes the problem by forcing the driver to process
the tx queue when ever links goes from down to up.
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I have not tested it but it is apparently fixed:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/e1000/if_em.c#rev1.21.2.23
--
Best regards.
Hooman Fazaeli
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