bpf: Implement map_gen_lookup() callback for XSKMAP

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Inline the xsk_map_lookup_elem() via implementing the map_gen_lookup()
callback. This results in emitting the bpf instructions in place of
bpf_map_lookup_elem() helper call and better performance of bpf
programs.

Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Link: https://lore.kernel.org/bpf/20191101110346.15004-3-bjorn.topel@gmail.com

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Maciej Fijalkowski 2019-11-01 12:03:45 +01:00 • committed by Daniel Borkmann

parent 64fe8c061d

commit e65650f291

1 changed files with 17 additions and 0 deletions

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kernel/bpf/xskmap.c

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