On Thu, Dec 08, 2005 at 01:35:11AM -0800, David S. Miller wrote: > From: Robert Olsson <[EMAIL PROTECTED]> > Date: Thu, 8 Dec 2005 10:20:43 +0100 > > > Why not remove copybreak from the drivers and do eventual copybreak after > > we > > have looked up the packet. This way we can get copybreak for all drivers > > and > > we can do this only for packets with has destination to localhost and > > ignore > > the forwarding packets. > > > > This will lead to an extra alloc in case of copybreak but it could > > possible > > to avoid this with some function giving copybreak feedback to driver i.e > > via > > netif_receive_skb_cpybrk() which tells driver if skb is consumed or not. > > It is not clear if we want to wait the whole netif_receive_skb() > execution to get this status. That can take a long time to execute > :-) > > But it is an interesting idea.
The problem is that there can be a quite long per CPU queue already before lookup - and without copybreak a lot of memory might be wasted in there. -Andi - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
