bpf: Handle BPF_EXIST and BPF_NOEXIST for LPM trie

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Add the currently missing handling for the BPF_EXIST and BPF_NOEXIST
flags. These flags can be specified by users and are relevant since LPM
trie supports exact matches during update.

Fixes: b95a5c4db0 ("bpf: add a longest prefix match trie map implementation")
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20241206110622.1161752-4-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Hou Tao 2024-12-06 19:06:16 +08:00 • committed by Alexei Starovoitov

parent 3d5611b4d7

commit eae6a075e9

1 changed files with 20 additions and 3 deletions

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kernel/bpf/lpm_trie.c

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