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| author |   Daniel Borkmann <daniel@iogearbox.net> | 2019-04-09 23:20:16 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-04-09 17:05:47 -0700 |
| commit | fb2abb73e575b6fcb428f803faf928ef04d5bb1e (patch) | |
| tree | cb15ca8b67f832fede7ec54d05a7d68664aa0591 /tools/include/linux | |
| parent | bpf: bpftool support for dumping data/bss/rodata sections (diff) | |
| download | linux-dev-fb2abb73e575b6fcb428f803faf928ef04d5bb1e.tar.xz linux-dev-fb2abb73e575b6fcb428f803faf928ef04d5bb1e.zip | |
bpf, selftest: test {rd, wr}only flags and direct value access
Extend test_verifier with various test cases around the two kernel
extensions, that is, {rd,wr}only map support as well as direct map
value access. All passing, one skipped due to xskmap not present
on test machine:
# ./test_verifier
[...]
#948/p XDP pkt read, pkt_meta' <= pkt_data, bad access 1 OK
#949/p XDP pkt read, pkt_meta' <= pkt_data, bad access 2 OK
#950/p XDP pkt read, pkt_data <= pkt_meta', good access OK
#951/p XDP pkt read, pkt_data <= pkt_meta', bad access 1 OK
#952/p XDP pkt read, pkt_data <= pkt_meta', bad access 2 OK
Summary: 1410 PASSED, 1 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/include/linux')
| -rw-r--r-- | tools/include/linux/filter.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/tools/include/linux/filter.h b/tools/include/linux/filter.h index cce0b02c0e28..ca28b6ab8db7 100644 --- a/tools/include/linux/filter.h +++ b/tools/include/linux/filter.h @@ -278,10 +278,29 @@ .off = 0, \ .imm = ((__u64) (IMM)) >> 32 }) +#define BPF_LD_IMM64_RAW_FULL(DST, SRC, OFF1, OFF2, IMM1, IMM2) \ + ((struct bpf_insn) { \ + .code = BPF_LD | BPF_DW | BPF_IMM, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = OFF1, \ + .imm = IMM1 }), \ + ((struct bpf_insn) { \ + .code = 0, /* zero is reserved opcode */ \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = OFF2, \ + .imm = IMM2 }) + /* pseudo BPF_LD_IMM64 insn used to refer to process-local map_fd */ #define BPF_LD_MAP_FD(DST, MAP_FD) \ - BPF_LD_IMM64_RAW(DST, BPF_PSEUDO_MAP_FD, MAP_FD) + BPF_LD_IMM64_RAW_FULL(DST, BPF_PSEUDO_MAP_FD, 0, 0, \ + MAP_FD, 0) + +#define BPF_LD_MAP_VALUE(DST, MAP_FD, VALUE_OFF) \ + BPF_LD_IMM64_RAW_FULL(DST, BPF_PSEUDO_MAP_VALUE, 0, 0, \ + MAP_FD, VALUE_OFF) /* Relative call */ |