Hello List!

In the issue https://github.com/luigirizzo/netmap/issues/355, Giuseppe made
this patch (
https://github.com/luigirizzo/netmap/issues/355#issuecomment-331156069 )
that fixed a bit the kernel panic issues and after this, he wrote the
following comment:

"

DD it is a flag in the receive descriptor of the ixgbe (the hardware
counterpart of the netmap slot). The datasheet says that when you see this
flag set, then there is a new packet in the slot. Apparently, this is not
always true.
"

So its possible to provide documentation or information to allow this bug
to be properlly fixed - since to me, the best fix is to know the conditions
this DD flag is set or unset - as commented in comment
https://github.com/luigirizzo/netmap/issues/355#issuecomment-331445154 ?

Thanks!

https://github.com/luigirizzo/netmap/issues/355#issuecomment-331156069


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Leonardo Amaral
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