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selftests/bpf: verifier/helper_packet_access.c converted to inline assembly
Test verifier/helper_packet_access.c automatically converted to use inline assembly. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230325025524.144043-22-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman
Alexei Starovoitov
parent
b37d776b43
commit
fb179fe69e
3 changed files with 552 additions and 460 deletions
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@ -18,6 +18,7 @@
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#include "verifier_div0.skel.h"
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#include "verifier_div_overflow.skel.h"
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#include "verifier_helper_access_var_len.skel.h"
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#include "verifier_helper_packet_access.skel.h"
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__maybe_unused
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static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
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@ -58,3 +59,4 @@ void test_verifier_direct_stack_access_wraparound(void) { RUN(verifier_direct_st
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void test_verifier_div0(void) { RUN(verifier_div0); }
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void test_verifier_div_overflow(void) { RUN(verifier_div_overflow); }
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void test_verifier_helper_access_var_len(void) { RUN(verifier_helper_access_var_len); }
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void test_verifier_helper_packet_access(void) { RUN(verifier_helper_packet_access); }
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@ -0,0 +1,550 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Converted from tools/testing/selftests/bpf/verifier/helper_packet_access.c */
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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struct {
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__uint(type, BPF_MAP_TYPE_HASH);
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__uint(max_entries, 1);
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__type(key, long long);
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__type(value, long long);
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} map_hash_8b SEC(".maps");
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SEC("xdp")
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__description("helper access to packet: test1, valid packet_ptr range")
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__success __retval(0)
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__naked void test1_valid_packet_ptr_range(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[xdp_md_data]); \
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r3 = *(u32*)(r1 + %[xdp_md_data_end]); \
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r1 = r2; \
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r1 += 8; \
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if r1 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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r3 = r2; \
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r4 = 0; \
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call %[bpf_map_update_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_update_elem),
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__imm_addr(map_hash_8b),
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__imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
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__imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
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: __clobber_all);
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}
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SEC("xdp")
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__description("helper access to packet: test2, unchecked packet_ptr")
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__failure __msg("invalid access to packet")
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__naked void packet_test2_unchecked_packet_ptr(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[xdp_md_data]); \
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r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(xdp_md_data, offsetof(struct xdp_md, data))
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: __clobber_all);
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}
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SEC("xdp")
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__description("helper access to packet: test3, variable add")
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__success __retval(0)
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__naked void to_packet_test3_variable_add(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[xdp_md_data]); \
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r3 = *(u32*)(r1 + %[xdp_md_data_end]); \
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r4 = r2; \
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r4 += 8; \
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if r4 > r3 goto l0_%=; \
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r5 = *(u8*)(r2 + 0); \
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r4 = r2; \
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r4 += r5; \
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r5 = r4; \
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r5 += 8; \
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if r5 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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r2 = r4; \
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call %[bpf_map_lookup_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
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__imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
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: __clobber_all);
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}
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SEC("xdp")
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__description("helper access to packet: test4, packet_ptr with bad range")
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__failure __msg("invalid access to packet")
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__naked void packet_ptr_with_bad_range_1(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[xdp_md_data]); \
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r3 = *(u32*)(r1 + %[xdp_md_data_end]); \
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r4 = r2; \
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r4 += 4; \
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if r4 > r3 goto l0_%=; \
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r0 = 0; \
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exit; \
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l0_%=: r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
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__imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
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: __clobber_all);
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}
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SEC("xdp")
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__description("helper access to packet: test5, packet_ptr with too short range")
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__failure __msg("invalid access to packet")
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__naked void ptr_with_too_short_range_1(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[xdp_md_data]); \
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r3 = *(u32*)(r1 + %[xdp_md_data_end]); \
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r2 += 1; \
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r4 = r2; \
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r4 += 7; \
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if r4 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
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__imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test6, cls valid packet_ptr range")
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__success __retval(0)
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__naked void cls_valid_packet_ptr_range(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__sk_buff_data]); \
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r3 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r1 = r2; \
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r1 += 8; \
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if r1 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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r3 = r2; \
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r4 = 0; \
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call %[bpf_map_update_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_update_elem),
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__imm_addr(map_hash_8b),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test7, cls unchecked packet_ptr")
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__failure __msg("invalid access to packet")
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__naked void test7_cls_unchecked_packet_ptr(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__sk_buff_data]); \
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r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test8, cls variable add")
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__success __retval(0)
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__naked void packet_test8_cls_variable_add(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__sk_buff_data]); \
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r3 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r4 = r2; \
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r4 += 8; \
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if r4 > r3 goto l0_%=; \
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r5 = *(u8*)(r2 + 0); \
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r4 = r2; \
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r4 += r5; \
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r5 = r4; \
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r5 += 8; \
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if r5 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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r2 = r4; \
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call %[bpf_map_lookup_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test9, cls packet_ptr with bad range")
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__failure __msg("invalid access to packet")
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__naked void packet_ptr_with_bad_range_2(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__sk_buff_data]); \
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r3 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r4 = r2; \
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r4 += 4; \
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if r4 > r3 goto l0_%=; \
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r0 = 0; \
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exit; \
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l0_%=: r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test10, cls packet_ptr with too short range")
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__failure __msg("invalid access to packet")
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__naked void ptr_with_too_short_range_2(void)
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{
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asm volatile (" \
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r2 = *(u32*)(r1 + %[__sk_buff_data]); \
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r3 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r2 += 1; \
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r4 = r2; \
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r4 += 7; \
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if r4 > r3 goto l0_%=; \
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r1 = %[map_hash_8b] ll; \
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call %[bpf_map_lookup_elem]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_map_lookup_elem),
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__imm_addr(map_hash_8b),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test11, cls unsuitable helper 1")
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__failure __msg("helper access to the packet")
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__naked void test11_cls_unsuitable_helper_1(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r6 += 1; \
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r3 = r6; \
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r3 += 7; \
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if r3 > r7 goto l0_%=; \
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r2 = 0; \
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r4 = 42; \
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r5 = 0; \
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call %[bpf_skb_store_bytes]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_skb_store_bytes),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test12, cls unsuitable helper 2")
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__failure __msg("helper access to the packet")
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__naked void test12_cls_unsuitable_helper_2(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r3 = r6; \
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r6 += 8; \
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if r6 > r7 goto l0_%=; \
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r2 = 0; \
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r4 = 4; \
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call %[bpf_skb_load_bytes]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_skb_load_bytes),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test13, cls helper ok")
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__success __retval(0)
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__naked void packet_test13_cls_helper_ok(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r6 += 1; \
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r1 = r6; \
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r1 += 7; \
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if r1 > r7 goto l0_%=; \
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r1 = r6; \
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r2 = 4; \
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r3 = 0; \
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r4 = 0; \
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r5 = 0; \
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call %[bpf_csum_diff]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_csum_diff),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test14, cls helper ok sub")
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__success __retval(0)
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__naked void test14_cls_helper_ok_sub(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r6 += 1; \
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r1 = r6; \
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r1 += 7; \
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if r1 > r7 goto l0_%=; \
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r1 -= 4; \
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r2 = 4; \
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r3 = 0; \
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r4 = 0; \
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r5 = 0; \
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call %[bpf_csum_diff]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_csum_diff),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test15, cls helper fail sub")
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__failure __msg("invalid access to packet")
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__naked void test15_cls_helper_fail_sub(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r6 += 1; \
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r1 = r6; \
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r1 += 7; \
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if r1 > r7 goto l0_%=; \
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r1 -= 12; \
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r2 = 4; \
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r3 = 0; \
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r4 = 0; \
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r5 = 0; \
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call %[bpf_csum_diff]; \
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l0_%=: r0 = 0; \
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exit; \
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" :
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: __imm(bpf_csum_diff),
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__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
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__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
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: __clobber_all);
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}
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SEC("tc")
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__description("helper access to packet: test16, cls helper fail range 1")
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__failure __msg("invalid access to packet")
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__naked void cls_helper_fail_range_1(void)
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{
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asm volatile (" \
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r6 = *(u32*)(r1 + %[__sk_buff_data]); \
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r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
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r6 += 1; \
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r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r1 = r6; \
|
||||
r2 = 8; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
__description("helper access to packet: test17, cls helper fail range 2")
|
||||
__failure __msg("R2 min value is negative")
|
||||
__naked void cls_helper_fail_range_2(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r6 = *(u32*)(r1 + %[__sk_buff_data]); \
|
||||
r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
|
||||
r6 += 1; \
|
||||
r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r1 = r6; \
|
||||
r2 = -9; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
__description("helper access to packet: test18, cls helper fail range 3")
|
||||
__failure __msg("R2 min value is negative")
|
||||
__naked void cls_helper_fail_range_3(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r6 = *(u32*)(r1 + %[__sk_buff_data]); \
|
||||
r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
|
||||
r6 += 1; \
|
||||
r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r1 = r6; \
|
||||
r2 = %[__imm_0]; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__imm_0, ~0),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
__description("helper access to packet: test19, cls helper range zero")
|
||||
__success __retval(0)
|
||||
__naked void test19_cls_helper_range_zero(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r6 = *(u32*)(r1 + %[__sk_buff_data]); \
|
||||
r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
|
||||
r6 += 1; \
|
||||
r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r1 = r6; \
|
||||
r2 = 0; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
__description("helper access to packet: test20, pkt end as input")
|
||||
__failure __msg("R1 type=pkt_end expected=fp")
|
||||
__naked void test20_pkt_end_as_input(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r6 = *(u32*)(r1 + %[__sk_buff_data]); \
|
||||
r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
|
||||
r6 += 1; \
|
||||
r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r1 = r7; \
|
||||
r2 = 4; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
l0_%=: r0 = 0; \
|
||||
exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
SEC("tc")
|
||||
__description("helper access to packet: test21, wrong reg")
|
||||
__failure __msg("invalid access to packet")
|
||||
__naked void to_packet_test21_wrong_reg(void)
|
||||
{
|
||||
asm volatile (" \
|
||||
r6 = *(u32*)(r1 + %[__sk_buff_data]); \
|
||||
r7 = *(u32*)(r1 + %[__sk_buff_data_end]); \
|
||||
r6 += 1; \
|
||||
r1 = r6; \
|
||||
r1 += 7; \
|
||||
if r1 > r7 goto l0_%=; \
|
||||
r2 = 4; \
|
||||
r3 = 0; \
|
||||
r4 = 0; \
|
||||
r5 = 0; \
|
||||
call %[bpf_csum_diff]; \
|
||||
r0 = 0; \
|
||||
l0_%=: exit; \
|
||||
" :
|
||||
: __imm(bpf_csum_diff),
|
||||
__imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
|
||||
__imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
|
||||
: __clobber_all);
|
||||
}
|
||||
|
||||
char _license[] SEC("license") = "GPL";
|
||||
|
|
@ -1,460 +0,0 @@
|
|||
{
|
||||
"helper access to packet: test1, valid packet_ptr range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct xdp_md, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_update_elem),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.result_unpriv = ACCEPT,
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_XDP,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test2, unchecked packet_ptr",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 1 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_XDP,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test3, variable add",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct xdp_md, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
|
||||
BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 11 },
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_XDP,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test4, packet_ptr with bad range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct xdp_md, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 7 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_XDP,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test5, packet_ptr with too short range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct xdp_md, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 6 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_XDP,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test6, cls valid packet_ptr range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_update_elem),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 5 },
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test7, cls unchecked packet_ptr",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 1 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test8, cls variable add",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
|
||||
BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 11 },
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test9, cls packet_ptr with bad range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 7 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test10, cls packet_ptr with too short range",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
|
||||
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
|
||||
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_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_hash_8b = { 6 },
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test11, cls unsuitable helper 1",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_7, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 42),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_store_bytes),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "helper access to the packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test12, cls unsuitable helper 2",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 3),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 4),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "helper access to the packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test13, cls helper ok",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test14, cls helper ok sub",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test15, cls helper fail sub",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 12),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test16, cls helper fail range 1",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 8),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test17, cls helper fail range 2",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -9),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "R2 min value is negative",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test18, cls helper fail range 3",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, ~0),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "R2 min value is negative",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test19, cls helper range zero",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = ACCEPT,
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test20, pkt end as input",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "R1 type=pkt_end expected=fp",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test21, wrong reg",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
Loading…
Reference in a new issue