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[Qemu-devel] Re: [PATCH RFC 0/4] Dumping traffic when using netdev devic

From: Miguel Di Ciurcio Filho
Subject: [Qemu-devel] Re: [PATCH RFC 0/4] Dumping traffic when using netdev devices
Date: Fri, 16 Jul 2010 11:39:25 -0300

On Fri, Jul 16, 2010 at 3:34 AM, Jan Kiszka <address@hidden> wrote:
>> - When using virtio-net, I'm not sure how to handle iovec when vnet_hdr=on
> Let the sending peer report (offset field or callback) where to find the
> payload in a frame.

Looking further, do you mean what net.c:vc_sendv_compat() does?

> That channel - or a separate one - could also be used to detect if a
> peer supports dumping at all (vhost...). Then no peer code need to be
> extended with dump management code, all could be moved into net.c

What do you mean by channel? (sorry, I'm kinda new around here :-)
I don't see how to put everything into net.c. Options parsing/setting
go inside each backend that adds a NetClientDump instance (just a few
lines as seen in my patch on net/tap.c as example), and when packets
come through net.c (qemu_deliver_packet_*()) we get them, right?



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