This series has some clean up/performance improvements for XDP sockets. The first two patches are cleanups for the AF_XDP core, and the restructure actually give a little performance boost. The last patch adds support for selecting AF_XDP BPF program, based on what the running kernel supports. The patches were earlier part of the bigger "bpf_redirect_xsk()" series [1]. I pulled out the non-controversial parts into this series. Thanks to Maciej and Magnus for the internal review/comments! Thanks to Toke, Alexei, and Andrii for the "auto-detection" help; Instead of basing it on kernel version, a run-time test is performed. Note that I did not add the probing support to libbpf.c, where the other probes reside. Instead it's in xsk.c. The reason for that is that AF_XDP will be moved out from libbpf post-1.0, to libxdp. Thanks, Björn [1] https://lore.kernel.org/bpf/20210119155013.154808-1-bjorn.topel@xxxxxxxxx/ Björn Töpel (3): xsk: remove explicit_free parameter from __xsk_rcv() xsk: fold xp_assign_dev and __xp_assign_dev libbpf, xsk: select AF_XDP BPF program based on kernel version net/xdp/xsk.c | 47 +++++++++++++++-------- net/xdp/xsk_buff_pool.c | 12 ++---- tools/lib/bpf/xsk.c | 82 +++++++++++++++++++++++++++++++++++++++-- 3 files changed, 113 insertions(+), 28 deletions(-) base-commit: 443edcefb8213155c0da22c4a999f4a49858fa39 -- 2.27.0
