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ixgbe vPMD question

DISCUSSION Zoltan Kiss 2 participants 2 messages Sep 17, 2015 – Sep 18, 2015

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Quoted 7 lines · Zoltan Kiss

Hi,

The recv function does a prefetch on cacheline1, however it seems to me that rx_pkts[pos] should be uninitialized pointer at that time:

http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/ixgbe_rxtx_vec.c#n287

Quoted 7 lines

So I guess it prefetches only random value. Or am I missing something?

Regards,

Zoltan

From a look at the code, you may indeed by right here. We'll see about fixing

that up in a future patch.

/Bruce