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9de2640b06
linux_dsm_epyc7002/tools/testing/selftests/bpf
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Yonghong Song 9de2640b06 bpf: add bpffs multi-dimensional array tests in test_btf 
For multiple dimensional arrays like below,
  int a[2][3]
both llvm and pahole generated one BTF_KIND_ARRAY type like
  . element_type: int
  . index_type: unsigned int
  . number of elements: 6

Such a collapsed BTF_KIND_ARRAY type will cause the divergence
in BTF vs. the user code. In the compile-once-run-everywhere
project, the header file is generated from BTF and used for bpf
program, and the definition in the header file will be different
from what user expects.

But the kernel actually supports chained multi-dimensional array
types properly. The above "int a[2][3]" can be represented as
  Type #n:
    . element_type: int
    . index_type: unsigned int
    . number of elements: 3
  Type #(n+1):
    . element_type: type #n
    . index_type: unsigned int
    . number of elements: 2

The following llvm commit
  https://reviews.llvm.org/rL357215
also enables llvm to generated proper chained multi-dimensional arrays.

The test_btf already has a raw test ("struct test #1") for chained
multi-dimensional arrays. This patch added amended bpffs test for
chained multi-dimensional arrays.

Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-01 15:41:05 +02:00
..
gnu selftests/bpf: get rid of -D__x86_64__ 2017-05-03 09:51:25 -04:00
include/uapi/linux License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
prog_tests selftests: bpf: don't depend on hardcoded perf sample_freq 2019-03-26 12:47:41 -07:00
progs selftests: bpf: tc-bpf flow shaping with EDT 2019-03-22 18:16:44 -07:00
verifier selftests/bpf: Test variable offset stack access 2019-03-29 12:05:35 -07:00
.gitignore selftests/bpf: add tests for bpf_tcp_check_syncookie and bpf_skc_lookup_tcp 2019-03-21 18:59:11 -07:00
bpf_endian.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bpf_helpers.h selftests/bpf: add tests for bpf_tcp_check_syncookie and bpf_skc_lookup_tcp 2019-03-21 18:59:11 -07:00
bpf_rand.h bpf: add ld64 imm test cases 2018-05-14 19:11:45 -07:00
bpf_rlimit.h bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
bpf_util.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2019-02-16 22:56:34 -08:00
cgroup_helpers.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
cgroup_helpers.h selftests/bpf: Fix const'ness in cgroup_helpers 2018-07-15 00:08:41 +02:00
config selftests/bpf: expand bpf tunnel test to ipv6 2019-03-22 13:52:44 -07:00
flow_dissector_load.c selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow dissector 2019-01-29 01:08:29 +01:00
flow_dissector_load.h selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow dissector 2019-01-29 01:08:29 +01:00
get_cgroup_id_user.c tools/bpf: fix selftest get_cgroup_id_user 2018-06-08 00:10:07 +02:00
Makefile selftests: bpf: tc-bpf flow shaping with EDT 2019-03-22 18:16:44 -07:00
netcnt_common.h selftests/bpf: cgroup local storage-based network counters 2018-10-01 16:18:33 +02:00
tcp_client.py selftests/bpf: use localhost in tcp_{server,client}.py 2019-02-04 21:29:27 +01:00
tcp_server.py selftests/bpf: use localhost in tcp_{server,client}.py 2019-02-04 21:29:27 +01:00
test_align.c bpf: Add BPF_F_ANY_ALIGNMENT. 2018-11-30 21:38:48 -08:00
test_btf.c bpf: add bpffs multi-dimensional array tests in test_btf 2019-04-01 15:41:05 +02:00
test_cgroup_storage.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_dev_cgroup.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_flow_dissector.c selftests: bpf: remove duplicated include 2019-01-29 00:09:26 +01:00
test_flow_dissector.sh selftests/bpf: rename flow dissector section to flow_dissector 2018-11-10 15:56:10 -08:00
test_iptunnel_common.h selftests/bpf: add a test for basic XDP functionality 2017-04-01 12:45:57 -07:00
test_kmod.sh selftests: bpf: notification about privilege required to run test_kmod.sh testing script 2018-06-22 00:30:02 +02:00
test_libbpf_open.c tools: libbpf: add a correctly named define for map iteration 2019-03-01 00:53:45 +01:00
test_libbpf.sh selftests/bpf: enable (uncomment) all tests in test_libbpf.sh 2018-11-07 22:20:56 +01:00
test_lirc_mode2_user.c media: bpf: add bpf function to report mouse movement 2018-12-09 14:37:18 -08:00
test_lirc_mode2.sh media: bpf: add bpf function to report mouse movement 2018-12-09 14:37:18 -08:00
test_lpm_map.c bpf, lpm: fix lookup bug in map_delete_elem 2019-02-22 16:17:53 +01:00
test_lru_map.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_lwt_ip_encap.sh selftests/bpf: test that GSO works in lwt_ip_encap 2019-03-07 10:41:40 +01:00
test_lwt_seg6local.sh selftests/bpf: update test_lwt_seg6local.sh according to iproute2 2018-08-03 10:19:33 +02:00
test_maps.c bpf: test_maps: fix possible out of bound access warning 2019-02-06 15:48:43 +01:00
test_netcnt.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_offload.py selftests/bpf: test reading the offloaded program 2019-02-06 15:35:42 +01:00
test_progs.c selftests: bpf: break up test_progs - misc 2019-03-02 11:10:40 -08:00
test_progs.h selftests: bpf: break up test_progs - misc 2019-03-02 11:10:40 -08:00
test_queue_stack_map.h selftests/bpf: add test cases for queue and stack maps 2018-10-19 13:24:31 -07:00
test_section_names.c selftests/bpf: Test libbpf_{prog,attach}_type_by_name 2018-09-27 21:14:59 +02:00
test_select_reuseport_common.h bpf: Test BPF_PROG_TYPE_SK_REUSEPORT 2018-08-11 01:58:46 +02:00
test_select_reuseport.c bpf: Test BPF_PROG_TYPE_SK_REUSEPORT 2018-08-11 01:58:46 +02:00
test_skb_cgroup_id_user.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_skb_cgroup_id.sh kselftests/bpf: use ping6 as the default ipv6 ping binary if it exists 2018-10-31 23:05:30 +01:00
test_sock_addr.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_sock_addr.sh kselftests/bpf: use ping6 as the default ipv6 ping binary if it exists 2018-10-31 23:05:30 +01:00
test_sock_fields.c bpf: Add an example for bpf_get_listener_sock 2019-03-13 12:04:35 -07:00
test_sock.c tools/bpf: add log_level to bpf_load_program_attr 2019-02-07 18:22:31 -08:00
test_socket_cookie.c libbpf: Show supported ELF section names when failing to guess prog/attach type 2019-01-23 12:27:04 +01:00
test_sockmap_kern.h bpf: test_sockmap, add options for msg_pop_data() helper 2018-11-28 22:07:57 +01:00
test_sockmap.c selftests: bpf: remove duplicated include 2019-01-29 00:09:26 +01:00
test_tag.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_tc_edt.sh selftests: bpf: tc-bpf flow shaping with EDT 2019-03-22 18:16:44 -07:00
test_tc_tunnel.sh bpf: test_tc_tunnel.sh needs reverse path filtering disabled 2019-03-25 15:01:54 +01:00
test_tcp_check_syncookie_user.c selftests/bpf: add tests for bpf_tcp_check_syncookie and bpf_skc_lookup_tcp 2019-03-21 18:59:11 -07:00
test_tcp_check_syncookie.sh selftests/bpf: add tests for bpf_tcp_check_syncookie and bpf_skc_lookup_tcp 2019-03-21 18:59:11 -07:00
test_tcpbpf_user.c selftests/bpf: fix incorrect users of create_and_get_cgroup 2019-01-07 13:15:55 -08:00
test_tcpbpf.h selftests/bpf: Test case for BPF_SOCK_OPS_TCP_LISTEN_CB 2018-07-15 00:08:41 +02:00
test_tcpnotify_user.c selftests/bpf: don't hardcode iptables/nc path in test_tcpnotify_user 2019-01-23 12:56:30 +01:00
test_tcpnotify.h selftests/bpf: add a test case for sock_ops perf-event notification 2018-11-09 09:40:17 +01:00
test_tunnel.sh bpf, selftests: delete xfrm tunnel when test exits. 2018-06-15 03:31:52 +02:00
test_verifier_log.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_verifier.c selftests/bpf: allow specifying helper for BPF_SK_LOOKUP 2019-03-21 18:59:11 -07:00
test_xdp_meta.sh tools/bpf: fix batch-mode test failure of test_xdp_redirect.sh 2018-02-06 11:34:42 +01:00
test_xdp_redirect.sh tools/bpf: fix batch-mode test failure of test_xdp_redirect.sh 2018-02-06 11:34:42 +01:00
test_xdp_vlan.sh selftests/bpf: add XDP selftests for modifying and popping VLAN headers 2018-10-09 21:59:09 -07:00
trace_helpers.c bpf, libbpf: simplify and cleanup perf ring buffer walk 2018-10-20 23:13:32 -07:00
trace_helpers.h trace_helpers.c: Add helpers to poll multiple perf FDs for events 2018-06-27 11:01:03 +02:00
urandom_read.c selftests: bpf: modify urandom_read and link it non-statically 2019-03-21 19:37:30 -07:00
with_addr.sh selftests/bpf: test bpf flow dissection 2018-09-14 12:04:33 -07:00
with_tunnels.sh selftests/bpf: test bpf flow dissection 2018-09-14 12:04:33 -07:00