Patrick McHardy <kaber@xxxxxxxxx> wrote: > The following patches contain an implementation of memory mapped I/O for > netlink. The implementation is modelled after AF_PACKET memory mapped I/O > with a few differences: [..] > Following are some numbers collected by Florian Westphal based on a > slightly older version, which included an experimental patch for the > nfnetlink_queue ordering issue. I'd like to see a comparision with Eric Dumazets nfnetlink_queue zerocopy patch [ ae08ce0021087a5d812d2714fb2a326ef9f8c450, netfilter: nfnetlink_queue: zero copy support ]. The nice thing about that patch is its transparency to userspace, and the avoidance of the 'nfnetlink_queue packet reordering' issue. Sorry :) Another issue with mmap is the need to preallocate the ring frame size. After the gso avoidance change [ no skb_gso_segment calls anymore ], we will need to be able to queue GSO/GRO skbs, which makes it necessary to cope with 64k payload in the mmap case... Cheers, Florian -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
