bpf: Factor out check_map_mem_read helper in verifier

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In the next commit, percpu_array map will add map_direct_value_addr
support.

IOW, it will add a map_type check in the iff condition of the
bpf_map_direct_read() code block, which will reduce the code block
readability.

Hence, factor out check_map_mem_read helper to improve the readability,
and the maintainability for the percpu_array map case.

Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260813152324.97937-3-leon.hwang@linux.dev

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Leon Hwang 2026-08-13 23:23:15 +08:00 • committed by Andrii Nakryiko

parent 0a07e75b16

commit bed7d65ff4

1 changed files with 43 additions and 32 deletions

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kernel/bpf/verifier.c

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