linux.git/tools/testing/selftests/bpf/Makefile, branch v4.18

bpf: Use option "help" in the llvm-objcopy test

2018-07-20T08:27:47+00:00

I noticed the "--version" option of the llvm-objcopy command has recently
disappeared from the master llvm branch.  It is currently used as a BTF
support test in tools/testing/selftests/bpf/Makefile.

This patch replaces it with "--help" which should be
less error prone in the future.

Fixes: c0fa1b6c3efc ("bpf: btf: Add BTF tests")
Signed-off-by: Martin KaFai Lau 
Signed-off-by: Daniel Borkmann

selftests: bpf: fix urandom_read build issue

2018-06-11T10:55:56+00:00

gcc complains that urandom_read gets built twice.

gcc -o tools/testing/selftests/bpf/urandom_read
-static urandom_read.c -Wl,--build-id
gcc -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../lib/bpf
-I../../../../include/generated  -I../../../include    urandom_read.c
urandom_read -lcap -lelf -lrt -lpthread -o
tools/testing/selftests/bpf/urandom_read
gcc: fatal error: input file
‘tools/testing/selftests/bpf/urandom_read’ is the
same as output file
compilation terminated.
../lib.mk:110: recipe for target
'tools/testing/selftests/bpf/urandom_read' failed
To fix this issue remove the urandom_read target and so target
TEST_CUSTOM_PROGS gets used.

Fixes: 81f77fd0deeb ("bpf: add selftest for stackmap with BPF_F_STACK_BUILD_ID")
Signed-off-by: Anders Roxell 
Acked-by: Yonghong Song 
Signed-off-by: Daniel Borkmann

tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper

2018-06-04T01:22:41+00:00

Syscall name_to_handle_at() can be used to get cgroup id
for a particular cgroup path in user space. The selftest
got cgroup id from both user and kernel, and compare to
ensure they are equal to each other.

Acked-by: Alexei Starovoitov 
Signed-off-by: Yonghong Song 
Signed-off-by: Alexei Starovoitov

bpf: add selftest for lirc_mode2 type program

2018-05-30T10:40:14+00:00

This is simple test over rc-loopback.

Acked-by: Yonghong Song 
Signed-off-by: Sean Young 
Signed-off-by: Daniel Borkmann

selftests/bpf: Selftest for sys_sendmsg hooks

2018-05-28T15:41:05+00:00

Add selftest for BPF_CGROUP_UDP4_SENDMSG and BPF_CGROUP_UDP6_SENDMSG
attach types.

Try to sendmsg(2) to specific IP:port and test that:
* source IP is overridden as expected.
* remote IP:port pair is overridden as expected;

Both UDPv4 and UDPv6 are tested.

Output:
  # test_sock_addr.sh 2>/dev/null
  Wait for testing IPv4/IPv6 to become available ... OK
  ... pre-existing test-cases skipped ...
  Test case: sendmsg4: load prog with wrong expected attach type .. [PASS]
  Test case: sendmsg4: attach prog with wrong attach type .. [PASS]
  Test case: sendmsg4: rewrite IP & port (asm) .. [PASS]
  Test case: sendmsg4: rewrite IP & port (C) .. [PASS]
  Test case: sendmsg4: deny call .. [PASS]
  Test case: sendmsg6: load prog with wrong expected attach type .. [PASS]
  Test case: sendmsg6: attach prog with wrong attach type .. [PASS]
  Test case: sendmsg6: rewrite IP & port (asm) .. [PASS]
  Test case: sendmsg6: rewrite IP & port (C) .. [PASS]
  Test case: sendmsg6: IPv4-mapped IPv6 .. [PASS]
  Test case: sendmsg6: deny call .. [PASS]
  Summary: 27 PASSED, 0 FAILED

Signed-off-by: Andrey Ignatov 
Acked-by: Alexei Starovoitov 
Acked-by: Martin KaFai Lau 
Signed-off-by: Daniel Borkmann

selftests/bpf: test for seg6local End.BPF action

2018-05-24T09:57:36+00:00

Add a new test for the seg6local End.BPF action. The following helpers
are also tested:

- bpf_lwt_push_encap within the LWT BPF IN hook
- bpf_lwt_seg6_action
- bpf_lwt_seg6_adjust_srh
- bpf_lwt_seg6_store_bytes

A chain of End.BPF actions is built. The SRH is injected through a LWT
BPF IN hook before entering this chain. Each End.BPF action validates
the previous one, otherwise the packet is dropped. The test succeeds
if the last node in the chain receives the packet and the UDP datagram
contained can be retrieved from userspace.

Signed-off-by: Mathieu Xhonneux 
Signed-off-by: Daniel Borkmann

selftests/bpf: Makefile fix "missing" headers on build with -idirafter

2018-05-23T12:32:09+00:00

Selftests fail to build on several distros/architectures because of
	missing headers files.

On a Ubuntu/x86_64 some missing headers are:
	asm/byteorder.h, asm/socket.h, asm/sockios.h

On a Debian/arm32 build already fails at sys/cdefs.h

In both cases, these already exist in /usr/include/,
but Clang does not include these when using '-target bpf' flag,
since it is no longer compiling against the host architecture.

The solution is to:

- run Clang without '-target bpf' and extract the include chain for the
current system

- add these to the bpf build with '-idirafter'

The choice of -idirafter is to catch this error without injecting
unexpected include behavior: if an arch-specific tree is built
for bpf in the future, this will be correctly found by Clang.

Signed-off-by: Sirio Balmelli 
Signed-off-by: Daniel Borkmann

bpf: selftest additions for SOCKHASH

2018-05-16T20:00:12+00:00

This runs existing SOCKMAP tests with SOCKHASH map type. To do this
we push programs into include file and build two BPF programs. One
for SOCKHASH and one for SOCKMAP.

We then run the entire test suite with each type.

Signed-off-by: John Fastabend 
Acked-by: David S. Miller 
Signed-off-by: Daniel Borkmann

selftests/bpf: make sure build-id is on

2018-05-15T08:07:44+00:00

--build-id may not be a default linker config.
Make sure it's used when linking urandom_read test program.
Otherwise test_stacktrace_build_id[_nmi] tests will be failling.

Signed-off-by: Alexei Starovoitov 
Acked-by: Yonghong Song 
Signed-off-by: Daniel Borkmann

tools: bpf: move the event reading loop to libbpf

2018-05-10T23:40:52+00:00

There are two copies of event reading loop - in bpftool and
trace_helpers "library".  Consolidate them and move the code
to libbpf.  Return codes from trace_helpers are kept, but
renamed to include LIBBPF prefix.

Suggested-by: Alexei Starovoitov 
Signed-off-by: Jakub Kicinski 
Reviewed-by: Quentin Monnet 
Signed-off-by: Daniel Borkmann