[ofa-general] IPoIB post_send failed

[Hal Rosenstock]

Hi,

I'm seeing the following messages from IPoIB:
ib0: post_send failed
ib0: post_send failed
ib0: post_send failed
ib0: post_send failed
ib0: post_send failed
ib0: post_send failed
NETDEV WATCHDOG: ib0: transmit timed out
ib0: transmit timeout: latency 1374 msecs
ib0: queue stopped 1, tx_head 140245691, tx_tail 140245565

What are the possible (and most likely) causes of post_send failures ? I
went through the code for all the errors (some at the driver level) but none
popped out at me.

Once the transmit queue is stopped, does the interface need to be taken down
and then back up to restart this ?

Thanks.

-- Hal
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