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Luca Boccassi
d75fe9cb1d
libbpf and bpftool have been dual-licensed to facilitate inclusion in software that is not compatible with GPL2-only (ie: Apache2), but the samples are still GPL2-only. Given these files are samples, they get naturally copied around. For example, it is the case for samples/bpf/bpf_insn.h which was copied into the systemd tree: https://github.com/systemd/systemd/blob/main/src/shared/linux/bpf_insn.h Some more context on systemd's needs specifically: Most of systemd is (L)GPL2-or-later, which means there is no perceived incompatibility with Apache2 software and can thus be linked with OpenSSL 3.0. But given this GPL2-only header is included this is currently not possible. Dual-licensing this header solves this problem for us as we are scoping a move to OpenSSL 3.0, see: https://lists.freedesktop.org/archives/systemd-devel/2021-September/046882.html Dual-license this header as GPL-2.0-only OR BSD-2-Clause to follow the same licensing used by libbpf and bpftool:1bc38b8ff6("libbpf: relicense libbpf as LGPL-2.1 OR BSD-2-Clause")907b223651("tools: bpftool: dual license all files") Signed-off-by: Luca Boccassi <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Simon Horman <[email protected]> Acked-by: Daniel Mack <[email protected]> Acked-by: Josef Bacik <[email protected]> Acked-by: Joe Stringer <[email protected]> Acked-by: Chenbo Feng <[email protected]> Acked-by: Björn Töpel <[email protected]> Acked-by: Magnus Karlsson <[email protected]> Acked-by: Brendan Jackman <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]