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-rw-r--r--samples/bpf/test_cgrp2_attach2.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/samples/bpf/test_cgrp2_attach2.c b/samples/bpf/test_cgrp2_attach2.c
index 180f9d813bca..d7b68ef5ba79 100644
--- a/samples/bpf/test_cgrp2_attach2.c
+++ b/samples/bpf/test_cgrp2_attach2.c
@@ -209,7 +209,7 @@ static int map_fd = -1;
static int prog_load_cnt(int verdict, int val)
{
- int cgroup_storage_fd;
+ int cgroup_storage_fd, percpu_cgroup_storage_fd;
if (map_fd < 0)
map_fd = bpf_create_map(BPF_MAP_TYPE_ARRAY, 4, 8, 1, 0);
@@ -225,6 +225,14 @@ static int prog_load_cnt(int verdict, int val)
return -1;
}
+ percpu_cgroup_storage_fd = bpf_create_map(
+ BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
+ sizeof(struct bpf_cgroup_storage_key), 8, 0, 0);
+ if (percpu_cgroup_storage_fd < 0) {
+ printf("failed to create map '%s'\n", strerror(errno));
+ return -1;
+ }
+
struct bpf_insn prog[] = {
BPF_MOV32_IMM(BPF_REG_0, 0),
BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_0, -4), /* *(u32 *)(fp - 4) = r0 */
@@ -235,11 +243,20 @@ static int prog_load_cnt(int verdict, int val)
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_1, val), /* r1 = 1 */
BPF_RAW_INSN(BPF_STX | BPF_XADD | BPF_DW, BPF_REG_0, BPF_REG_1, 0, 0), /* xadd r0 += r1 */
+
BPF_LD_MAP_FD(BPF_REG_1, cgroup_storage_fd),
BPF_MOV64_IMM(BPF_REG_2, 0),
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_local_storage),
BPF_MOV64_IMM(BPF_REG_1, val),
BPF_RAW_INSN(BPF_STX | BPF_XADD | BPF_W, BPF_REG_0, BPF_REG_1, 0, 0),
+
+ BPF_LD_MAP_FD(BPF_REG_1, percpu_cgroup_storage_fd),
+ BPF_MOV64_IMM(BPF_REG_2, 0),
+ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_local_storage),
+ BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_0, 0),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 0x1),
+ BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_3, 0),
+
BPF_MOV64_IMM(BPF_REG_0, verdict), /* r0 = verdict */
BPF_EXIT_INSN(),
};