Hi, Michael Clark wrote: > > An obvious kernel improvement for userspace meters like NeTraMet would > be to give libpcap's pcap_read a kernel interface that can return more > than one packet at a time (the libpcap interface has this capability). It's already there - the turbo packet interface (PACKET_RX_RING sockopt). Very nice and fast. Direct transfer to mmapped memory. > An additional feature for network devices that could support it (not > sure if this is feasible) would be to switch to an 'interrupt when > packet buffer full' when in promiscuous mode. With the RX_RING you can poll a memory location in the mmapped memory to detect whether there are new packets. You basically only perform a system call (poll/select) if there's nothing more to do. Ciao, ET. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
