Michael> Thats identical to what I posted till this point - right?
I think I added one blank line, but other than that, yes.
Michael> I thought its important for performance to queue packets
Michael> under mcast->pkt_queue? If not why do we do it? Maybe we
Michael> shouldnt call netif_carrier_on if we drop all packets?
The queueing is there so that we aren't guaranteed to drop the first
multicast packet sent to a given group. I'm not sure that it really
is important, but it does seem like it would be bad to lose that
packet every time.
>From reading the code we can't call netif_carrier_on until after
priv->broadcast has the attached flag set. In ipoib_mcast_join_task(),
we have
if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
ipoib_mcast_join(dev, priv->broadcast, 0);
return;
}
and then at the very bottom
netif_carrier_on(dev);
- R.
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