On Fri, Apr 27, 2018 at 8:17 AM, Björn Töpel <bjorn.to...@gmail.com> wrote: > From: Björn Töpel <bjorn.to...@intel.com> > > This patch set introduces a new address family called AF_XDP that is > optimized for high performance packet processing and, in upcoming > patch sets, zero-copy semantics. In this v2 version, we have removed > all zero-copy related code in order to make it smaller, simpler and > hopefully more review friendly. This patch set only supports copy-mode > for the generic XDP path (XDP_SKB) for both RX and TX and copy-mode > for RX using the XDP_DRV path. Zero-copy support requires XDP and > driver changes that Jesper Dangaard Brouer is working on. Some of his > work has already been accepted. We will publish our zero-copy support > for RX and TX on top of his patch sets at a later point in time.
> Changes from V1: > > * Fixes to bugs spotted by Will in his review > * Implemented the performance otimization to BPF_MAP_TYPE_XSKMAP > suggested by Will An xsk may only exist in one map at a time. Is this somehow assured? > * Refactored packet_direct_xmit to become a common function > in core/dev.c as suggested by Will > * Added documentation as suggested by Jesper > * Proper page unpinning as suggested by MST > * Some minor code cleanups Everything else looks great to me. If the above is correct (or corrected) Acked-by: Willem de Bruijn <will...@google.com> I did not read everything again, but applied both patchsets on top of bpf-next to do a diff of diffs. In case others find it useful: https://github.com/wdebruij/linux/tree/bpf-next-afxdp-v1 https://github.com/wdebruij/linux/tree/bpf-next-afxdp-v2
