bpf: Refactor verifier dynptr into get_dynptr_arg_reg

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This commit refactors the logic for determining which register in a
function is the dynptr into "get_dynptr_arg_reg". This will be used
in the future when the dynptr reg for BPF_FUNC_dynptr_write will need
to be obtained in order to support writes for skb dynptrs.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Link: https://lore.kernel.org/r/20230301154953.641654-6-joannelkoong@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Joanne Koong 2023-03-01 07:49:48 -08:00 • committed by Alexei Starovoitov

parent 8357b366cb

commit 485ec51ef9

1 changed files with 50 additions and 30 deletions

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kernel/bpf/verifier.c

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