Re: [PATCH bpf-next v3 1/2] bpf, xdp: per-map bpf_redirect_map functions for XDP
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From: Jesper Dangaard Brouer <hidden>
Date: 2021-02-22 07:24:53
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bpf
On Sun, 21 Feb 2021 21:09:53 +0100 Björn Töpel [off-list ref] wrote:
From: Björn Töpel <redacted> Currently the bpf_redirect_map() implementation dispatches to the correct map-lookup function via a switch-statement. To avoid the dispatching, this change adds one bpf_redirect_map() implementation per map. Correct function is automatically selected by the BPF verifier. v2->v3 : Fix build when CONFIG_NET is not set. (lkp) v1->v2 : Re-added comment. (Toke) rfc->v1: Get rid of the macro and use __always_inline. (Jesper) Acked-by: Toke Høiland-Jørgensen <redacted> Signed-off-by: Björn Töpel <redacted> --- include/linux/bpf.h | 20 +++++++------- include/linux/filter.h | 9 +++++++ include/net/xdp_sock.h | 6 ++--- kernel/bpf/cpumap.c | 2 +- kernel/bpf/devmap.c | 4 +-- kernel/bpf/verifier.c | 17 ++++++++---- net/core/filter.c | 61 ++++++++++++++++++++++++++++-------------- 7 files changed, 78 insertions(+), 41 deletions(-)
Love it! :-) Acked-by: Jesper Dangaard Brouer <redacted> -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer