[dpdk-dev] [PATCH v3 1/5] vhost: rewrite enqueue
Yuanhan Liu
yuanhan.liu at linux.intel.com
Thu Aug 25 06:00:45 CEST 2016
On Mon, Aug 22, 2016 at 11:35:47AM +0200, Maxime Coquelin wrote:
> >- virtio_enqueue_offload(m, &virtio_hdr.hdr);
> >- copy_virtio_net_hdr(dev, desc_addr, virtio_hdr);
> >+ /* handle virtio header */
> >+ virtio_hdr = (struct virtio_net_hdr_mrg_rxbuf *)(uintptr_t)desc_addr;
> >+ virtio_enqueue_offload(mbuf, &(virtio_hdr->hdr));
> Parenthesis around virtio_hdr->hdr shouldn't be needed.
> > vhost_log_write(dev, desc->addr, dev->vhost_hlen);
> >- PRINT_PACKET(dev, (uintptr_t)desc_addr, dev->vhost_hlen, 0);
> Looks like you remove the PRINT_PACKET calls.
> Does it impact performance?
Yes, it does. But it's only enabled for debug mode. Besides that,
it's just a NOOP.
> In any case, it should be mentionned in the commit message.
Agreed. But for this case, we should not remove it: it breaks the
debug-ability.
--yliu
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