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Re: [Qemu-devel] [vhost-net] handle_tx: extract data from vq when !zcopy
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From: |
Greg Kurz |
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Subject: |
Re: [Qemu-devel] [vhost-net] handle_tx: extract data from vq when !zcopy_used |
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Date: |
Fri, 10 Apr 2015 17:14:34 +0200 |
On Fri, 10 Apr 2015 15:58:33 +0300
Catalin Vasile <address@hidden> wrote:
> I'm really confused.
> Where does vhost-net (handle_tx) actually extract data from vq when zero
> copy is not used?
> I just see it popping a vq element, but not actually copying anything from
> there.
vhost-net just passes the pointers to the socket, whether zero copy is used
or not:
err = sock->ops->sendmsg(NULL, sock, &msg, len);
BTW, I think address@hidden would have been more
appropriate since this isn't a about QEMU.
Cheers.
--
Greg