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selftests/bpf: allow specifying helper for BPF_SK_LOOKUP

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Make the BPF_SK_LOOKUP macro take a helper function, to ease
writing tests for new helpers.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Lorenz Bauer
2019-03-22 09:54:04 +08:00
committed by Alexei Starovoitov
parent 253c8dde3c
commit dbaf2877e9
3 changed files with 46 additions and 46 deletions
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6
tools/testing/selftests/bpf/test_verifier.c
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@@ -198,7 +198,7 @@ static void bpf_fill_rand_ld_dw(struct bpf_test *self)
}
/* BPF_SK_LOOKUP contains 13 instructions, if you need to fix up maps */
#define BPF_SK_LOOKUP \
#define BPF_SK_LOOKUP(func) \
/* struct bpf_sock_tuple tuple = {} */ \
BPF_MOV64_IMM(BPF_REG_2, 0), \
BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_2, -8), \
@@ -207,13 +207,13 @@ static void bpf_fill_rand_ld_dw(struct bpf_test *self)
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -32), \
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -40), \
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_2, -48), \
/* sk = sk_lookup_tcp(ctx, &tuple, sizeof tuple, 0, 0) */ \
/* sk = func(ctx, &tuple, sizeof tuple, 0, 0) */ \
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), \
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -48), \
BPF_MOV64_IMM(BPF_REG_3, sizeof(struct bpf_sock_tuple)), \
BPF_MOV64_IMM(BPF_REG_4, 0), \
BPF_MOV64_IMM(BPF_REG_5, 0), \
BPF_EMIT_CALL(BPF_FUNC_sk_lookup_tcp)
BPF_EMIT_CALL(BPF_FUNC_ ## func)
/* BPF_DIRECT_PKT_R2 contains 7 instructions, it initializes default return
* value into 0 and does necessary preparation for direct packet access