On Fri, 2015-02-06 at 14:31 +0000, David Laight wrote: > From: Eric Dumazet > > On Fri, 2015-02-06 at 05:53 -0800, Eric Dumazet wrote: > > > > > > > wifi could eventually do that, providing in skb->tx_completion_delay_us > > > the time spent in wifi driver. > > > > > > This way, we would have no penalty for network devices doing normal skb > > > orphaning (loopback interface, ethernet, ...) > > > > Another way would be that wifi does an automatic orphaning after 1 or > > 2ms. > > Couldn't you do byte counting? > So orphan enough packets to keep a few ms of tx traffic (at the current > tx rate) orphaned. > You might need to give the hardware both orphaned and non-orphaned (parented?) > packets and orphan some when you get a tx complete for an orphaned packet. We already have byte counting. The thing is : A driver can keep an skb for itself, but calling skb_orphan() in time to allow a socket to send more packets. For say a UDP server, it would be quite mandatory, as it usually uses a single UDP socket to receive and send messages. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
