git.armlinux.org.uk/linux-arm.git - Russell King's ARM Linux kernel tree

Age	Commit message (Collapse)	Author
2024-06-13	bpf: crypto: make state and IV dynptr nullable	Vadim Fedorenko
	Some ciphers do not require state and IV buffer, but with current implementation 0-sized dynptr is always needed. With adjustment to verifier we can provide NULL instead of 0-sized dynptr. Make crypto kfuncs ready for this. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Vadim Fedorenko <vadfed@meta.com> Link: https://lore.kernel.org/r/20240613211817.1551967-3-vadfed@meta.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-06-12	bpf: treewide: Align kfunc signatures to prog point-of-view	Daniel Xu
	Previously, kfunc declarations in bpf_kfuncs.h (and others) used "user facing" types for kfuncs prototypes while the actual kfunc definitions used "kernel facing" types. More specifically: bpf_dynptr vs bpf_dynptr_kern, __sk_buff vs sk_buff, and xdp_md vs xdp_buff. It wasn't an issue before, as the verifier allows aliased types. However, since we are now generating kfunc prototypes in vmlinux.h (in addition to keeping bpf_kfuncs.h around), this conflict creates compilation errors. Fix this conflict by using "user facing" types in kfunc definitions. This results in more casts, but otherwise has no additional runtime cost. Note, similar to 5b268d1ebcdc ("bpf: Have bpf_rdonly_cast() take a const pointer"), we also make kfuncs take const arguments where appropriate in order to make the kfunc more permissive. Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Link: https://lore.kernel.org/r/b58346a63a0e66bc9b7504da751b526b0b189a67.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-04-24	bpf: make common crypto API for TC/XDP programs	Vadim Fedorenko
	Add crypto API support to BPF to be able to decrypt or encrypt packets in TC/XDP BPF programs. Special care should be taken for initialization part of crypto algo because crypto alloc) doesn't work with preemtion disabled, it can be run only in sleepable BPF program. Also async crypto is not supported because of the very same issue - TC/XDP BPF programs are not sleepable. Signed-off-by: Vadim Fedorenko <vadfed@meta.com> Link: https://lore.kernel.org/r/20240422225024.2847039-2-vadfed@meta.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>