Commit 940e7be3 authored by Jonathan Lemon's avatar Jonathan Lemon Committed by Alexei Starovoitov
Browse files

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: default avatarJonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 91eda599

tools/testing/selftests/bpf/verifier/sock.c

+18 −0
Original line number Diff line number Diff line
@@ -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,

},

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