From: Daniel Borkmann Date: Wed, 10 Mar 2021 00:06:34 +0000 (+0100) Subject: Merge branch 'bpf-xdp-redirect' X-Git-Tag: v5.13-rc1~94^2~619^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=32f91529e2bdbe0d92edb3ced41dfba4beffa84a;p=thirdparty%2Flinux.git Merge branch 'bpf-xdp-redirect' Björn Töpel says: ==================== This two patch series contain two optimizations for the bpf_redirect_map() helper and the xdp_do_redirect() function. The bpf_redirect_map() optimization is about avoiding the map lookup dispatching. Instead of having a switch-statement and selecting the correct lookup function, we let bpf_redirect_map() be a map operation, where each map has its own bpf_redirect_map() implementation. This way the run-time lookup is avoided. The xdp_do_redirect() patch restructures the code, so that the map pointer indirection can be avoided. Performance-wise I got 4% improvement for XSKMAP (sample:xdpsock/rx-drop), and 8% (sample:xdp_redirect_map) on my machine. v5->v6: Removed REDIR enum, and instead use map_id and map_type. (Daniel) Applied Daniel's fixups on patch 1. (Daniel) v4->v5: Renamed map operation to map_redirect. (Daniel) v3->v4: Made bpf_redirect_map() a map operation. (Daniel) v2->v3: Fix build when CONFIG_NET is not set. (lkp) v1->v2: Removed warning when CONFIG_BPF_SYSCALL was not set. (lkp) Cleaned up case-clause in xdp_do_generic_redirect_map(). (Toke) Re-added comment. (Toke) rfc->v1: Use map_id, and remove bpf_clear_redirect_map(). (Toke) Get rid of the macro and use __always_inline. (Jesper) ==================== Signed-off-by: Daniel Borkmann --- 32f91529e2bdbe0d92edb3ced41dfba4beffa84a