Commit d3305286 authored by Eduard Zingerman's avatar Eduard Zingerman Committed by Alexei Starovoitov
Browse files

selftests/bpf: verifier/value_or_null.c converted to inline assembly 



Test verifier/value_or_null.c automatically converted to use inline assembly.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-40-eddyz87@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 8f59e87a

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

+2 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ 
#include "verifier_uninit.skel.h"

#include "verifier_value_adj_spill.skel.h"

#include "verifier_value.skel.h"

#include "verifier_value_or_null.skel.h"



__maybe_unused

static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -94,3 +95,4 @@ void test_verifier_stack_ptr(void) { RUN(verifier_stack_ptr); } 
void test_verifier_uninit(void)               { RUN(verifier_uninit); }

void test_verifier_value_adj_spill(void)      { RUN(verifier_value_adj_spill); }

void test_verifier_value(void)                { RUN(verifier_value); }

void test_verifier_value_or_null(void)        { RUN(verifier_value_or_null); }

tools/testing/selftests/bpf/progs/verifier_value_or_null.c

0 → 100644
+288 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/* Converted from tools/testing/selftests/bpf/verifier/value_or_null.c */



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include "bpf_misc.h"



#define MAX_ENTRIES 11



struct test_val {

	unsigned int index;

	int foo[MAX_ENTRIES];

};



struct {

	__uint(type, BPF_MAP_TYPE_HASH);

	__uint(max_entries, 1);

	__type(key, long long);

	__type(value, struct test_val);

} map_hash_48b SEC(".maps");



struct {

	__uint(type, BPF_MAP_TYPE_HASH);

	__uint(max_entries, 1);

	__type(key, long long);

	__type(value, long long);

} map_hash_8b SEC(".maps");



SEC("tc")

__description("multiple registers share map_lookup_elem result")

__success __retval(0)

__naked void share_map_lookup_elem_result(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r4 = r0;					\

	if r0 == 0 goto l0_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("tc")

__description("alu ops on ptr_to_map_value_or_null, 1")

__failure __msg("R4 pointer arithmetic on map_value_or_null")

__naked void map_value_or_null_1(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r4 = r0;					\

	r4 += -2;					\

	r4 += 2;					\

	if r0 == 0 goto l0_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("tc")

__description("alu ops on ptr_to_map_value_or_null, 2")

__failure __msg("R4 pointer arithmetic on map_value_or_null")

__naked void map_value_or_null_2(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r4 = r0;					\

	r4 &= -1;					\

	if r0 == 0 goto l0_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("tc")

__description("alu ops on ptr_to_map_value_or_null, 3")

__failure __msg("R4 pointer arithmetic on map_value_or_null")

__naked void map_value_or_null_3(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r4 = r0;					\

	r4 <<= 1;					\

	if r0 == 0 goto l0_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("tc")

__description("invalid memory access with multiple map_lookup_elem calls")

__failure __msg("R4 !read_ok")

__naked void multiple_map_lookup_elem_calls(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	r8 = r1;					\

	r7 = r2;					\

	call %[bpf_map_lookup_elem];			\

	r4 = r0;					\

	r1 = r8;					\

	r2 = r7;					\

	call %[bpf_map_lookup_elem];			\

	if r0 == 0 goto l0_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("tc")

__description("valid indirect map_lookup_elem access with 2nd lookup in branch")

__success __retval(0)

__naked void with_2nd_lookup_in_branch(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	r8 = r1;					\

	r7 = r2;					\

	call %[bpf_map_lookup_elem];			\

	r2 = 10;					\

	if r2 != 0 goto l0_%=;				\

	r1 = r8;					\

	r2 = r7;					\

	call %[bpf_map_lookup_elem];			\

l0_%=:	r4 = r0;					\

	if r0 == 0 goto l1_%=;				\

	r1 = 0;						\

	*(u64*)(r4 + 0) = r1;				\

l1_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("socket")

__description("invalid map access from else condition")

__failure __msg("R0 unbounded memory access")

__failure_unpriv __msg_unpriv("R0 leaks addr")

__flag(BPF_F_ANY_ALIGNMENT)

__naked void map_access_from_else_condition(void)

{

	asm volatile ("					\

	r1 = 0;						\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_48b] ll;			\

	call %[bpf_map_lookup_elem];			\

	if r0 == 0 goto l0_%=;				\

	r1 = *(u32*)(r0 + 0);				\

	if r1 >= %[__imm_0] goto l1_%=;			\

	r1 += 1;					\

l1_%=:	r1 <<= 2;					\

	r0 += r1;					\

	r1 = %[test_val_foo];				\

	*(u64*)(r0 + 0) = r1;				\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_48b),

	  __imm_const(__imm_0, MAX_ENTRIES-1),

	  __imm_const(test_val_foo, offsetof(struct test_val, foo))

	: __clobber_all);

}



SEC("tc")

__description("map lookup and null branch prediction")

__success __retval(0)

__naked void lookup_and_null_branch_prediction(void)

{

	asm volatile ("					\

	r1 = 10;					\

	*(u64*)(r10 - 8) = r1;				\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r6 = r0;					\

	if r6 == 0 goto l0_%=;				\

	if r6 != 0 goto l0_%=;				\

	r10 += 10;					\

l0_%=:	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



SEC("cgroup/skb")

__description("MAP_VALUE_OR_NULL check_ids() in regsafe()")

__failure __msg("R8 invalid mem access 'map_value_or_null'")

__failure_unpriv __msg_unpriv("")

__flag(BPF_F_TEST_STATE_FREQ)

__naked void null_check_ids_in_regsafe(void)

{

	asm volatile ("					\

	r1 = 0;						\

	*(u64*)(r10 - 8) = r1;				\

	/* r9 = map_lookup_elem(...) */			\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r9 = r0;					\

	/* r8 = map_lookup_elem(...) */			\

	r2 = r10;					\

	r2 += -8;					\

	r1 = %[map_hash_8b] ll;				\

	call %[bpf_map_lookup_elem];			\

	r8 = r0;					\

	/* r7 = ktime_get_ns() */			\

	call %[bpf_ktime_get_ns];			\

	r7 = r0;					\

	/* r6 = ktime_get_ns() */			\

	call %[bpf_ktime_get_ns];			\

	r6 = r0;					\

	/* if r6 > r7 goto +1    ; no new information about the state is derived from\

	 *                       ; this check, thus produced verifier states differ\

	 *                       ; only in 'insn_idx'	\

	 * r9 = r8               ; optionally share ID between r9 and r8\

	 */						\

	if r6 > r7 goto l0_%=;				\

	r9 = r8;					\

l0_%=:	/* if r9 == 0 goto <exit> */			\

	if r9 == 0 goto l1_%=;				\

	/* read map value via r8, this is not always	\

	 * safe because r8 might be not equal to r9.	\

	 */						\

	r0 = *(u64*)(r8 + 0);				\

l1_%=:	/* exit 0 */					\

	r0 = 0;						\

	exit;						\

"	:

	: __imm(bpf_ktime_get_ns),

	  __imm(bpf_map_lookup_elem),

	  __imm_addr(map_hash_8b)

	: __clobber_all);

}



char _license[] SEC("license") = "GPL";

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

deleted100644 → 0
+0 −220
Original line number Diff line number Diff line 
{

	"multiple registers share map_lookup_elem result",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.result = ACCEPT,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"alu ops on ptr_to_map_value_or_null, 1",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, -2),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 2),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.errstr = "R4 pointer arithmetic on map_value_or_null",

	.result = REJECT,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"alu ops on ptr_to_map_value_or_null, 2",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_ALU64_IMM(BPF_AND, BPF_REG_4, -1),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.errstr = "R4 pointer arithmetic on map_value_or_null",

	.result = REJECT,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"alu ops on ptr_to_map_value_or_null, 3",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_ALU64_IMM(BPF_LSH, BPF_REG_4, 1),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.errstr = "R4 pointer arithmetic on map_value_or_null",

	.result = REJECT,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"invalid memory access with multiple map_lookup_elem calls",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_MOV64_REG(BPF_REG_8, BPF_REG_1),

	BPF_MOV64_REG(BPF_REG_7, BPF_REG_2),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_8),

	BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.result = REJECT,

	.errstr = "R4 !read_ok",

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"valid indirect map_lookup_elem access with 2nd lookup in branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_MOV64_REG(BPF_REG_8, BPF_REG_1),

	BPF_MOV64_REG(BPF_REG_7, BPF_REG_2),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_IMM(BPF_REG_2, 10),

	BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0, 3),

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_8),

	BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_4, BPF_REG_0),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),

	BPF_ST_MEM(BPF_DW, BPF_REG_4, 0, 0),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.result = ACCEPT,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS

},

{

	"invalid map access from else condition",

	.insns = {

	BPF_ST_MEM(BPF_DW, 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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6),

	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),

	BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES-1, 1),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 1),

	BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),

	BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_48b = { 3 },

	.errstr = "R0 unbounded memory access",

	.result = REJECT,

	.errstr_unpriv = "R0 leaks addr",

	.result_unpriv = REJECT,

	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,

},

{

	"map lookup and null branch prediction",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 10),

	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),

	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_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),

	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_6, 0, 2),

	BPF_JMP_IMM(BPF_JNE, BPF_REG_6, 0, 1),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_10, 10),

	BPF_EXIT_INSN(),

	},

	.fixup_map_hash_8b = { 4 },

	.prog_type = BPF_PROG_TYPE_SCHED_CLS,

	.result = ACCEPT,

},

{

	"MAP_VALUE_OR_NULL check_ids() in regsafe()",

	.insns = {

	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),

	/* r9 = map_lookup_elem(...) */

	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_MOV64_REG(BPF_REG_9, BPF_REG_0),

	/* r8 = map_lookup_elem(...) */

	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_MOV64_REG(BPF_REG_8, BPF_REG_0),

	/* r7 = ktime_get_ns() */

	BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),

	BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),

	/* r6 = ktime_get_ns() */

	BPF_EMIT_CALL(BPF_FUNC_ktime_get_ns),

	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),

	/* if r6 > r7 goto +1    ; no new information about the state is derived from

	 *                       ; this check, thus produced verifier states differ

	 *                       ; only in 'insn_idx'

	 * r9 = r8               ; optionally share ID between r9 and r8

	 */

	BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 1),

	BPF_MOV64_REG(BPF_REG_9, BPF_REG_8),

	/* if r9 == 0 goto <exit> */

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_9, 0, 1),

	/* read map value via r8, this is not always

	 * safe because r8 might be not equal to r9.

	 */

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_8, 0),

	/* exit 0 */

	BPF_MOV64_IMM(BPF_REG_0, 0),

	BPF_EXIT_INSN(),

	},

	.flags = BPF_F_TEST_STATE_FREQ,

	.fixup_map_hash_8b = { 3, 9 },

	.result = REJECT,

	.errstr = "R8 invalid mem access 'map_value_or_null'",

	.result_unpriv = REJECT,

	.errstr_unpriv = "",

	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,

},