bpf: Add cookie object to bpf maps

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[ Upstream commit 12df58ad29 ]

Add a cookie to BPF maps to uniquely identify BPF maps for the timespan
when the node is up. This is different to comparing a pointer or BPF map
id which could get rolled over and reused.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250730234733.530041-1-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Daniel Borkmann 2025-07-31 01:47:30 +02:00 • committed by Greg Kroah-Hartman

parent 7a6c2d093c

commit 23099792bb

2 changed files with 7 additions and 0 deletions

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1

include/linux/bpf.h

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6

kernel/bpf/syscall.c

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