Make x86 JIT to generate native code for
(BPF_ABS | <size> | BPF_LD) and (BPF_IND | <size> | BPF_LD)
instructions.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
x86 jit can generate invalid code for (BPF_LD | BPF_IMM | EBPF_DW)
instructions, when immediate value is bigger then INT32_MAX.
Fixes: cc752e43e079 ("bpf: add JIT compilation for x86_64 ISA")
Cc: stable@dpdk.org
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Extend struct rte_bpf_xsym with new fields to provide information about:
- for variables - type and size
- for functions - number of arguments and type/size of each argument
and return value
Such information would allow validate code to perform
more extensive checking on input BPF program and catch
misbehaving BPF code.
That change would cause ABI/API breakage for librte_bpf.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
