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authorJonathan Lemon <jonathan.lemon@gmail.com>2019-06-06 13:59:42 -0700
committerAlexei Starovoitov <ast@kernel.org>2019-06-10 23:31:26 -0700
commit940e7be34ab3d04b7e0b6dd57bdbda1d225c3d8c (patch)
treebd14d555613cd7c13e3e5f73f33fdfff80eabb19 /tools/testing/selftests/bpf/verifier
parentbpf/tools: sync bpf.h (diff)
downloadlinux-dev-940e7be34ab3d04b7e0b6dd57bdbda1d225c3d8c.tar.xz
linux-dev-940e7be34ab3d04b7e0b6dd57bdbda1d225c3d8c.zip
tools/bpf: Add bpf_map_lookup_elem selftest for xskmap
Check that bpf_map_lookup_elem lookup and structure access operats correctly. Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier')
-rw-r--r--tools/testing/selftests/bpf/verifier/sock.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/sock.c b/tools/testing/selftests/bpf/verifier/sock.c
index b31cd2cf50d0..9ed192e14f5f 100644
--- a/tools/testing/selftests/bpf/verifier/sock.c
+++ b/tools/testing/selftests/bpf/verifier/sock.c
@@ -498,3 +498,21 @@
.result = REJECT,
.errstr = "cannot pass map_type 24 into func bpf_map_lookup_elem",
},
+{
+ "bpf_map_lookup_elem(xskmap, &key); xs->queue_id",
+ .insns = {
+ BPF_ST_MEM(BPF_W, BPF_REG_10, -8, 0),
+ BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
+ BPF_LD_MAP_FD(BPF_REG_1, 0),
+ BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
+ BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
+ BPF_EXIT_INSN(),
+ BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, offsetof(struct bpf_xdp_sock, queue_id)),
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_EXIT_INSN(),
+ },
+ .fixup_map_xskmap = { 3 },
+ .prog_type = BPF_PROG_TYPE_XDP,
+ .result = ACCEPT,
+},