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vhost-user: Add 'VHOST_USER_POSTCOPY_ADVISE' message

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Wire up a notifier to send a VHOST_USER_POSTCOPY_ADVISE
message on an incoming advise.

Later patches will fill in the behaviour/contents of the
message.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2018-03-12 17:21:01 +00:00 • committed by Michael S. Tsirkin
parent 9ccbfe14dd
commit d3dff7a5a1
6 changed files with 79 additions and 0 deletions
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11
contrib/libvhost-user/libvhost-user.c
View file

@ -86,6 +86,7 @@ vu_request_to_string(unsigned int req)
REQ(VHOST_USER_SET_VRING_ENDIAN),
REQ(VHOST_USER_GET_CONFIG),
REQ(VHOST_USER_SET_CONFIG),
REQ(VHOST_USER_POSTCOPY_ADVISE),
REQ(VHOST_USER_MAX),
};
#undef REQ
@ -856,6 +857,14 @@ vu_set_config(VuDev *dev, VhostUserMsg *vmsg)
return false;
}
static bool
vu_set_postcopy_advise(VuDev *dev, VhostUserMsg *vmsg)
{
/* TODO: Open ufd, pass it back in the request */
vmsg->size = 0;
return true; /* = send a reply */
}
static bool
vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
{
@ -927,6 +936,8 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
return vu_set_config(dev, vmsg);
case VHOST_USER_NONE:
break;
case VHOST_USER_POSTCOPY_ADVISE:
return vu_set_postcopy_advise(dev, vmsg);
default:
vmsg_close_fds(vmsg);
vu_panic(dev, "Unhandled request: %d", vmsg->request);