As first step extend struct rte_bpf_xsym with new fields to provide extra information for allowed external varaibles and helper functions. That allows to extend bpf validation with new checks for: - use/return uninitialized registers and/or stack data - possible memory access boundaries violation - invalid arguments for the function
Konstantin Ananyev (3): bpf: add extra information for external symbol definitions bpf: add extra validation for input BPF program test/bpf: add new test-case for external function call app/test-pmd/bpf_cmd.c | 27 +- lib/librte_bpf/bpf_def.h | 5 + lib/librte_bpf/bpf_exec.c | 2 +- lib/librte_bpf/bpf_impl.h | 14 + lib/librte_bpf/bpf_jit_x86.c | 17 +- lib/librte_bpf/bpf_load.c | 49 +- lib/librte_bpf/bpf_load_elf.c | 4 +- lib/librte_bpf/bpf_validate.c | 1136 +++++++++++++++++++++++++++++++++++++++-- lib/librte_bpf/rte_bpf.h | 21 +- test/test/test_bpf.c | 169 +++++- 10 files changed, 1382 insertions(+), 62 deletions(-) -- 2.13.6
