xdp: Remove map_to_flush and map swap detection

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.

Björn Töpel committed 6 years ago

Commit 332f22a1 parent cdfafe92 files · +3 −25Browse files

Showing the changes to include/linux (1 of 2 files). Show all

Unified · Split

include/linux/filter.h+0−1

@@ -592,7 +592,6 @@ struct bpf_redirect_info { · 591 unmodified lines
592	u32 tgt_index;	592	u32 tgt_index;
593	void *tgt_value;	593	void *tgt_value;
594	struct bpf_map *map;	594	struct bpf_map *map;
595	struct bpf_map *map_to_flush;
596	u32 kern_flags;	595	u32 kern_flags;
597	};	596	};
598		597