xdp: Remove map_to_flush and map swap detection

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Now that all XDP maps that can be used with bpf_redirect_map() tracks
entries to be flushed in a global fashion, there is not need to track
that the map has changed and flush from xdp_do_generic_map()
anymore. All entries will be flushed in xdp_do_flush_map().

This means that the map_to_flush can be removed, and the corresponding
checks. Moving the flush logic to one place, xdp_do_flush_map(), give
a bulking behavior and performance boost.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20191219061006.21980-8-bjorn.topel@gmail.com

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Björn Töpel 2019-12-19 07:10:05 +01:00 • committed by Alexei Starovoitov

parent cdfafe98ca

commit 332f22a60e

2 changed files with 3 additions and 25 deletions

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1

include/linux/filter.h

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27

net/core/filter.c

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