This series introduces crypto kfuncs to make BPF programs able to utilize kernel crypto subsystem. Crypto operations made pluggable to avoid extensive growth of kernel when it's not needed. Only skcipher is added within this series, but it can be easily extended to other types of operations. No hardware offload supported as it needs sleepable context which is not available for TX or XDP programs. At the same time crypto context initialization kfunc can only run in sleepable context, that's why it should be run separately and store the result in the map. Selftests show the common way to implement crypto actions in BPF programs. Benchmark is also added to have a baseline. Vadim Fedorenko (4): bpf: make common crypto API for TC/XDP programs bpf: crypto: add skcipher to bpf crypto selftests: bpf: crypto skcipher algo selftests selftests: bpf: crypto: add benchmark for crypto functions MAINTAINERS | 8 + crypto/Makefile | 3 + crypto/bpf_crypto_skcipher.c | 82 ++++ include/linux/bpf.h | 1 + include/linux/bpf_crypto.h | 24 ++ kernel/bpf/Makefile | 3 + kernel/bpf/crypto.c | 382 ++++++++++++++++++ kernel/bpf/helpers.c | 2 +- kernel/bpf/verifier.c | 1 + tools/testing/selftests/bpf/Makefile | 2 + tools/testing/selftests/bpf/bench.c | 6 + .../selftests/bpf/benchs/bench_bpf_crypto.c | 185 +++++++++ tools/testing/selftests/bpf/config | 5 + .../selftests/bpf/prog_tests/crypto_sanity.c | 197 +++++++++ .../selftests/bpf/progs/crypto_basic.c | 68 ++++ .../selftests/bpf/progs/crypto_bench.c | 109 +++++ .../selftests/bpf/progs/crypto_common.h | 66 +++ .../selftests/bpf/progs/crypto_sanity.c | 169 ++++++++ 18 files changed, 1312 insertions(+), 1 deletion(-) create mode 100644 crypto/bpf_crypto_skcipher.c create mode 100644 include/linux/bpf_crypto.h create mode 100644 kernel/bpf/crypto.c create mode 100644 tools/testing/selftests/bpf/benchs/bench_bpf_crypto.c create mode 100644 tools/testing/selftests/bpf/prog_tests/crypto_sanity.c create mode 100644 tools/testing/selftests/bpf/progs/crypto_basic.c create mode 100644 tools/testing/selftests/bpf/progs/crypto_bench.c create mode 100644 tools/testing/selftests/bpf/progs/crypto_common.h create mode 100644 tools/testing/selftests/bpf/progs/crypto_sanity.c -- 2.43.0
