Commit Graph

6378 Commits

Author SHA1 Message Date
Amit Cohen
ca264ef6ed selftests: devlink_trap_tunnel_vxlan: Add test case for decap_error
Test that the trap is triggered under the right conditions and that
devlink counters increase.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-19 16:23:52 +01:00
Amit Cohen
740e87bc3d selftests: devlink_trap_l3_drops: Add test cases of irif and erif disabled
Add test cases to check that packets routed through disabled RIFs and
packets routed from disabled RIFs are dropped and devlink counters
increase when the action is trap.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-19 16:23:52 +01:00
Aleksa Sarai
b28a10aedc selftests: add openat2(2) selftests
Test all of the various openat2(2) flags. A small stress-test of a
symlink-rename attack is included to show that the protections against
".."-based attacks are sufficient.

The main things these self-tests are enforcing are:

  * The struct+usize ABI for openat2(2) and copy_struct_from_user() to
    ensure that upgrades will be handled gracefully (in addition,
    ensuring that misaligned structures are also handled correctly).

  * The -EINVAL checks for openat2(2) are all correctly handled to avoid
    userspace passing unknown or conflicting flag sets (most
    importantly, ensuring that invalid flag combinations are checked).

  * All of the RESOLVE_* semantics (including errno values) are
    correctly handled with various combinations of paths and flags.

  * RESOLVE_IN_ROOT correctly protects against the symlink rename(2)
    attack that has been responsible for several CVEs (and likely will
    be responsible for several more).

Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-01-18 09:19:18 -05:00
Yonghong Song
35697c12d7 selftests/bpf: Fix test_progs send_signal flakiness with nmi mode
Alexei observed that test_progs send_signal may fail if run
with command line "./test_progs" and the tests will pass
if just run "./test_progs -n 40".

I observed similar issue with nmi subtest failure
and added a delay 100 us in Commit ab8b7f0cb3
("tools/bpf: Add self tests for bpf_send_signal_thread()")
and the problem is gone for me. But the issue still exists
in Alexei's testing environment.

The current code uses sample_freq = 50 (50 events/second), which
may not be enough. But if the sample_freq value is larger than
sysctl kernel/perf_event_max_sample_rate, the perf_event_open
syscall will fail.

This patch changed nmi perf testing to use sample_period = 1,
which means trying to sampling every event. This seems fixing
the issue.

Fixes: ab8b7f0cb3 ("tools/bpf: Add self tests for bpf_send_signal_thread()")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200116174004.1522812-1-yhs@fb.com
2020-01-16 13:28:57 -08:00
Siddhesh Poyarekar
6b64a650f0 kselftest: Minimise dependency of get_size on C library interfaces
It was observed[1] on arm64 that __builtin_strlen led to an infinite
loop in the get_size selftest.  This is because __builtin_strlen (and
other builtins) may sometimes result in a call to the C library
function.  The C library implementation of strlen uses an IFUNC
resolver to load the most efficient strlen implementation for the
underlying machine and hence has a PLT indirection even for static
binaries.  Because this binary avoids the C library startup routines,
the PLT initialization never happens and hence the program gets stuck
in an infinite loop.

On x86_64 the __builtin_strlen just happens to expand inline and avoid
the call but that is not always guaranteed.

Further, while testing on x86_64 (Fedora 31), it was observed that the
test also failed with a segfault inside write() because the generated
code for the write function in glibc seems to access TLS before the
syscall (probably due to the cancellation point check) and fails
because TLS is not initialised.

To mitigate these problems, this patch reduces the interface with the
C library to just the syscall function.  The syscall function still
sets errno on failure, which is undesirable but for now it only
affects cases where syscalls fail.

[1] https://bugs.linaro.org/show_bug.cgi?id=5479

Signed-off-by: Siddhesh Poyarekar <siddhesh@gotplt.org>
Reported-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Reviewed-by: Tim Bird <tim.bird@sony.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-16 13:08:26 -07:00
Miroslav Benes
e1dae517a0 selftests/livepatch: Remove unused local variable in set_ftrace_enabled()
set_ftrace_enabled() contains unused local variable "sysctl". Remove it.

Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-16 13:05:49 -07:00
Miroslav Benes
b54c82e919 selftests/livepatch: Replace set_dynamic_debug() with setup_config() in README
Commit 35c9e74cff ("selftests/livepatch: Make dynamic debug setup and
restore generic") introduced setup_config() to set up the environment
for each test. It superseded set_dynamic_debug().  README still mentions
set_dynamic_debug(), so update it to setup_config() which should be used
now in every test.

Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-16 13:03:22 -07:00
Andrii Nakryiko
b65053cd94 selftests/bpf: Add whitelist/blacklist of test names to test_progs
Add ability to specify a list of test name substrings for selecting which
tests to run. So now -t is accepting a comma-separated list of strings,
similarly to how -n accepts a comma-separated list of test numbers.

Additionally, add ability to blacklist tests by name. Blacklist takes
precedence over whitelist. Blacklisting is important for cases where it's
known that some tests can't pass (e.g., due to perf hardware events that are
not available within VM). This is going to be used for libbpf testing in
Travis CI in its Github repo.

Example runs with just whitelist and whitelist + blacklist:

  $ sudo ./test_progs -tattach,core/existence
  #1 attach_probe:OK
  #6 cgroup_attach_autodetach:OK
  #7 cgroup_attach_multi:OK
  #8 cgroup_attach_override:OK
  #9 core_extern:OK
  #10/44 existence:OK
  #10/45 existence___minimal:OK
  #10/46 existence__err_int_sz:OK
  #10/47 existence__err_int_type:OK
  #10/48 existence__err_int_kind:OK
  #10/49 existence__err_arr_kind:OK
  #10/50 existence__err_arr_value_type:OK
  #10/51 existence__err_struct_type:OK
  #10 core_reloc:OK
  #19 flow_dissector_reattach:OK
  #60 tp_attach_query:OK
  Summary: 8/8 PASSED, 0 SKIPPED, 0 FAILED

  $ sudo ./test_progs -tattach,core/existence -bcgroup,flow/arr
  #1 attach_probe:OK
  #9 core_extern:OK
  #10/44 existence:OK
  #10/45 existence___minimal:OK
  #10/46 existence__err_int_sz:OK
  #10/47 existence__err_int_type:OK
  #10/48 existence__err_int_kind:OK
  #10/51 existence__err_struct_type:OK
  #10 core_reloc:OK
  #60 tp_attach_query:OK
  Summary: 4/6 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: Julia Kartseva <hex@fb.com>
Link: https://lore.kernel.org/bpf/20200116005549.3644118-1-andriin@fb.com
2020-01-15 18:38:39 -08:00
Brian Vazquez
f0fac2cec2 selftests/bpf: Add batch ops testing to array bpf map
Tested bpf_map_lookup_batch() and bpf_map_update_batch()
functionality.

  $ ./test_maps
      ...
        test_array_map_batch_ops:PASS
      ...

Signed-off-by: Brian Vazquez <brianvv@google.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200115184308.162644-10-brianvv@google.com
2020-01-15 14:00:35 -08:00
Yonghong Song
30ff3c5913 selftests/bpf: Add batch ops testing for htab and htab_percpu map
Tested bpf_map_lookup_batch(), bpf_map_lookup_and_delete_batch(),
bpf_map_update_batch(), and bpf_map_delete_batch() functionality.
  $ ./test_maps
    ...
      test_htab_map_batch_ops:PASS
      test_htab_percpu_map_batch_ops:PASS
    ...

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Brian Vazquez <brianvv@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200115184308.162644-9-brianvv@google.com
2020-01-15 14:00:35 -08:00
Eelco Chaudron
83e4b88be1 selftests/bpf: Add a test for attaching a bpf fentry/fexit trace to an XDP program
Add a test that will attach a FENTRY and FEXIT program to the XDP test
program. It will also verify data from the XDP context on FENTRY and
verifies the return code on exit.

Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157909410480.47481.11202505690938004673.stgit@xdp-tutorial
2020-01-15 13:22:25 -08:00
Yonghong Song
ab8b7f0cb3 tools/bpf: Add self tests for bpf_send_signal_thread()
The test_progs send_signal() is amended to test
bpf_send_signal_thread() as well.

   $ ./test_progs -n 40
   #40/1 send_signal_tracepoint:OK
   #40/2 send_signal_perf:OK
   #40/3 send_signal_nmi:OK
   #40/4 send_signal_tracepoint_thread:OK
   #40/5 send_signal_perf_thread:OK
   #40/6 send_signal_nmi_thread:OK
   #40 send_signal:OK
   Summary: 1/6 PASSED, 0 SKIPPED, 0 FAILED

Also took this opportunity to rewrite the send_signal test
using skeleton framework and array mmap to make code
simpler and more readable.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200115035003.602425-1-yhs@fb.com
2020-01-15 11:44:51 -08:00
Petr Machata
fef6d67049 selftests: mlxsw: qos_mc_aware: Fix mausezahn invocation
Mausezahn does not recognize "own" as a keyword on source IP address. As a
result, the MC stream is not running at all, and therefore no UC
degradation can be observed even in principle.

Fix the invocation, and tighten the test: due to the minimum shaper
configured at the MC TCs, we always expect about 20% degradation. Fail the
test if it is lower.

Fixes: 573363a68f ("selftests: mlxsw: Add qos_lib.sh")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-15 04:16:30 -08:00
Ido Schimmel
212a37c225 selftests: mlxsw: Add test for FIB offload API
The test reuses the common FIB offload tests in order to make sure that
mlxsw correctly implements FIB offload.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-14 18:53:35 -08:00
Ido Schimmel
ffdc5149c5 selftests: netdevsim: Add test for FIB offload API
Test various aspects of the FIB offload API on top of the netdevsim
implementation. Both good and bad flows are tested.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-14 18:53:35 -08:00
Ido Schimmel
c662455b64 selftests: forwarding: Add helpers and tests for FIB offload
Implement a set of common helpers and tests for FIB offload that can be
used by multiple drivers to check their FIB offload implementations.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-14 18:53:35 -08:00
Andrii Nakryiko
3a0d3092a4 selftests/bpf: Build runqslower from selftests
Ensure runqslower tool is built as part of selftests to prevent it from bit
rotting.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200113073143.1779940-7-andriin@fb.com
2020-01-14 09:23:12 -08:00
Andrei Vagin
a750c7474a selftests/timens: Check for right timens offsets after fork and exec
Output on success:
 1..1
 ok 1 exec
 # Pass 1 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output on failure:
 1..1
 not ok 1 36016 16
 Bail out!

Output with lack of permissions:
 1..1
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..1
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-35-dima@arista.com
2020-01-14 12:21:02 +01:00
Andrei Vagin
1854b97e4f selftests/timens: Add a simple perf test for clock_gettime()
Output on success:
1..4
 ok 1 host:	clock:  monotonic	cycles:	 148323947
 ok 2 host:	clock:   boottime	cycles:	 148577503
 ok 3 ns:	clock:  monotonic	cycles:	 137659217
 ok 4 ns:	clock:   boottime	cycles:	 137959154
 # Pass 4 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output with lack of permissions:
 1..4
 ok 1 host:	clock:  monotonic	cycles:	 145671139
 ok 2 host:	clock:   boottime	cycles:	 146958357
 not ok 3 # SKIP need to run as root

Output without support of time namespaces:
 1..4
 ok 1 host:	clock:  monotonic	cycles:	 145671139
 ok 2 host:	clock:   boottime	cycles:	 146958357
 not ok 3 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-34-dima@arista.com
2020-01-14 12:21:02 +01:00
Andrei Vagin
d5b0117ddd selftests/timens: Add timer offsets test
Check that timer_create() takes into account clock offsets.

Output on success:
 1..3
 ok 1 clockid=7
 ok 2 clockid=1
 ok 3 clockid=9
 # Pass 3 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output with lack of permissions:
 1..3
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..3
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-33-dima@arista.com
2020-01-14 12:21:01 +01:00
Dmitry Safonov
9d1f5a8c9d selftests/timens: Add procfs selftest
Check that /proc/uptime is correct inside a new time namespace.

Output on success:
 1..1
 ok 1 Passed for /proc/uptime
 # Pass 1 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output with lack of permissions:
 1..1
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..1
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-32-dima@arista.com
2020-01-14 12:21:01 +01:00
Andrei Vagin
46e003433f selftests/timens: Add a test for clock_nanosleep()
Check that clock_nanosleep() takes into account clock offsets.

Output on success:
 1..4
 ok 1 clockid: 1 abs:0
 ok 2 clockid: 1 abs:1
 ok 3 clockid: 9 abs:0
 ok 4 clockid: 9 abs:1

Output with lack of permissions:
 1..4
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..4
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-31-dima@arista.com
2020-01-14 12:21:01 +01:00
Andrei Vagin
11873de3ce selftests/timens: Add a test for timerfd
Check that timerfd_create() takes into account clock offsets.

Output on success:
 1..3
 ok 1 clockid=7
 ok 2 clockid=1
 ok 3 clockid=9
 # Pass 3 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output on failure:
 1..3
 not ok 1 clockid: 7 elapsed: 0
 not ok 2 clockid: 1 elapsed: 0
 not ok 3 clockid: 9 elapsed: 0
 Bail out!

Output with lack of permissions:
 1..3
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..3
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-30-dima@arista.com
2020-01-14 12:21:00 +01:00
Dmitry Safonov
61c5767603 selftests/timens: Add Time Namespace test for supported clocks
A test to check that all supported clocks work on host and inside
a new time namespace. Use both ways to get time: through VDSO and
by entering the kernel with implicit syscall.

Introduce a new timens directory in selftests framework for
the next timens tests.

Output on success:
 1..10
 ok 1 Passed for CLOCK_BOOTTIME (syscall)
 ok 2 Passed for CLOCK_BOOTTIME (vdso)
 ok 3 Passed for CLOCK_BOOTTIME_ALARM (syscall)
 ok 4 Passed for CLOCK_BOOTTIME_ALARM (vdso)
 ok 5 Passed for CLOCK_MONOTONIC (syscall)
 ok 6 Passed for CLOCK_MONOTONIC (vdso)
 ok 7 Passed for CLOCK_MONOTONIC_COARSE (syscall)
 ok 8 Passed for CLOCK_MONOTONIC_COARSE (vdso)
 ok 9 Passed for CLOCK_MONOTONIC_RAW (syscall)
 ok 10 Passed for CLOCK_MONOTONIC_RAW (vdso)
 # Pass 10 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0

Output with lack of permissions:
 1..10
 not ok 1 # SKIP need to run as root

Output without support of time namespaces:
 1..10
 not ok 1 # SKIP Time namespaces are not supported

Co-developed-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-29-dima@arista.com
2020-01-14 12:21:00 +01:00
Andrii Nakryiko
2cc51d34d9 selftests/bpf: Conform selftests/bpf Makefile output to libbpf and bpftool
Bring selftest/bpf's Makefile output to the same format used by libbpf and
bpftool: 2 spaces of padding on the left + 8-character left-aligned build step
identifier.

Also, hide feature detection output by default. Can be enabled back by setting
V=1.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200113073143.1779940-4-andriin@fb.com
2020-01-13 17:48:13 -08:00
Sargun Dhillon
873dfd7881 test: Add test for pidfd getfd
The following tests:
  * Fetch FD, and then compare via kcmp
  * Make sure getfd can be blocked by blocking ptrace_may_access
  * Making sure fetching bad FDs fails
  * Make sure trying to set flags to non-zero results in an EINVAL

Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20200107175927.4558-5-sargun@sargun.me
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2020-01-13 21:49:54 +01:00
Sean Christopherson
f6505c88bf tools/x86: Sync msr-index.h from kernel sources
Sync msr-index.h to pull in recent renames of the IA32_FEATURE_CONTROL
MSR definitions.  Update KVM's VMX selftest and turbostat accordingly.
Keep the full name in turbostat's output to avoid breaking someone's
workflow, e.g. if a script is looking for the full name.

While using the renamed defines is by no means necessary, do the sync
now to avoid leaving a landmine that will get stepped on the next time
msr-index.h needs to be refreshed for some other reason.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-4-sean.j.christopherson@intel.com
2020-01-13 17:42:57 +01:00
Sean Christopherson
a5543d3456 selftests, kvm: Replace manual MSR defs with common msr-index.h
The kernel's version of msr-index.h was pulled wholesale into tools by
commit

  444e2ff34d ("tools arch x86: Grab a copy of the file containing the MSR numbers"),

Use the common msr-index.h instead of manually redefining everything in
a KVM-only header.

Note, a few MSR-related definitions remain in processor.h because they
are not covered by msr-index.h, including the awesomely named
APIC_BASE_MSR, which refers to starting index of the x2APIC MSRs, not
the actual MSR_IA32_APICBASE, which *is* defined by msr-index.h.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-3-sean.j.christopherson@intel.com
2020-01-13 17:30:04 +01:00
Andrii Nakryiko
ac065870d9 selftests/bpf: Add BPF_PROG, BPF_KPROBE, and BPF_KRETPROBE macros
Streamline BPF_TRACE_x macro by moving out return type and section attribute
definition out of macro itself. That makes those function look in source code
similar to other BPF programs. Additionally, simplify its usage by determining
number of arguments automatically (so just single BPF_TRACE vs a family of
BPF_TRACE_1, BPF_TRACE_2, etc). Also, allow more natural function argument
syntax without commas inbetween argument type and name.

Given this helper is useful not only for tracing tp_btf/fenty/fexit programs,
but could be used for LSM programs and others following the same pattern,
rename BPF_TRACE macro into more generic BPF_PROG. Existing BPF_TRACE_x
usages in selftests are converted to new BPF_PROG macro.

Following the same pattern, define BPF_KPROBE and BPF_KRETPROBE macros for
nicer usage of kprobe/kretprobe arguments, respectively. BPF_KRETPROBE, adopts
same convention used by fexit programs, that last defined argument is probed
function's return result.

v4->v5:
- fix test_overhead test (__set_task_comm is void) (Alexei);

v3->v4:
- rebased and fixed one more BPF_TRACE_x occurence (Alexei);

v2->v3:
- rename to shorter and as generic BPF_PROG (Alexei);

v1->v2:
- verified GCC handles pragmas as expected;
- added descriptions to macros;
- converted new STRUCT_OPS selftest to BPF_HANDLER (worked as expected);
- added original context as 'ctx' parameter, for cases where it has to be
  passed into BPF helpers. This might cause an accidental naming collision,
  unfortunately, but at least it's easy to work around. Fortunately, this
  situation produces quite legible compilation error:

progs/bpf_dctcp.c:46:6: error: redefinition of 'ctx' with a different type: 'int' vs 'unsigned long long *'
        int ctx = 123;
            ^
progs/bpf_dctcp.c:42:6: note: previous definition is here
void BPF_HANDLER(dctcp_init, struct sock *sk)
     ^
./bpf_trace_helpers.h:58:32: note: expanded from macro 'BPF_HANDLER'
____##name(unsigned long long *ctx, ##args)

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200110211634.1614739-1-andriin@fb.com
2020-01-10 14:02:07 -08:00
Kees Cook
46d1a0f03d selftests/lkdtm: Add tests for LKDTM targets
This adds a basic framework for running all the "safe" LKDTM tests. This
will allow easy introspection into any selftest logs to examine the
results of most LKDTM tests.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-10 14:50:28 -07:00
Alexei Starovoitov
360301a6c2 selftests/bpf: Add unit tests for global functions
test_global_func[12] - check 512 stack limit.
test_global_func[34] - check 8 frame call chain limit.
test_global_func5    - check that non-ctx pointer cannot be passed into
                       a function that expects context.
test_global_func6    - check that ctx pointer is unmodified.
test_global_func7    - check that global function returns scalar.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200110064124.1760511-7-ast@kernel.org
2020-01-10 17:20:07 +01:00
Alexei Starovoitov
e528d1c012 selftests/bpf: Modify a test to check global functions
Make two static functions in test_xdp_noinline.c global:
before: processed 2790 insns
after: processed 2598 insns

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200110064124.1760511-6-ast@kernel.org
2020-01-10 17:20:07 +01:00
Alexei Starovoitov
6db2d81a46 selftests/bpf: Add a test for a large global function
test results:
pyperf50 with always_inlined the same function five times: processed 46378 insns
pyperf50 with global function: processed 6102 insns

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200110064124.1760511-5-ast@kernel.org
2020-01-10 17:20:07 +01:00
Alexei Starovoitov
7608e4db6d selftests/bpf: Add fexit-to-skb test for global funcs
Add simple fexit prog type to skb prog type test when subprogram is a global
function.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200110064124.1760511-4-ast@kernel.org
2020-01-10 17:20:07 +01:00
Andrii Nakryiko
965b9fee28 selftests/bpf: Further clean up Makefile output
Further clean up Makefile output:
- hide "entering directory" messages;
- silvence sub-Make command echoing;
- succinct MKDIR messages.

Also remove few test binaries that are not produced anymore from .gitignore.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200110051716.1591485-4-andriin@fb.com
2020-01-09 21:55:08 -08:00
Andrii Nakryiko
6910d7d386 selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir
Reorder includes search path to ensure $(OUTPUT) and $(CURDIR) go before
libbpf's directory. Also fix bpf_helpers.h to include bpf_helper_defs.h in
such a way as to leverage includes search path. This allows selftests to not
use libbpf's local and potentially stale bpf_helper_defs.h. It's important
because selftests/bpf's Makefile only re-generates bpf_helper_defs.h in
seltests' output directory, not the one in libbpf's directory.

Also force regeneration of bpf_helper_defs.h when libbpf.a is updated to
reduce staleness.

Fixes: fa633a0f89 ("libbpf: Fix build on read-only filesystems")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200110051716.1591485-3-andriin@fb.com
2020-01-09 21:55:08 -08:00
Andrii Nakryiko
2031af28a4 libbpf,selftests/bpf: Fix clean targets
Libbpf's clean target should clean out generated files in $(OUTPUT) directory
and not make assumption that $(OUTPUT) directory is current working directory.

Selftest's Makefile should delegate cleaning of libbpf-generated files to
libbpf's Makefile. This ensures more robust clean up.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200110051716.1591485-2-andriin@fb.com
2020-01-09 21:55:08 -08:00
Dan Carpenter
192c197cbc selftests: Uninitialized variable in test_cgcore_proc_migration()
The "c_threads" variable is used in the error handling code before it
has been initialized

Fixes: 11318989c3 ("selftests: cgroup: Add task migration tests")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-09 16:21:23 -07:00
David S. Miller
a2d6d7ae59 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
The ungrafting from PRIO bug fixes in net, when merged into net-next,
merge cleanly but create a build failure.  The resolution used here is
from Petr Machata.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-09 12:13:43 -08:00
Linus Torvalds
a5f48c7878 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:

 1) Missing netns pointer init in arp_tables, from Florian Westphal.

 2) Fix normal tcp SACK being treated as D-SACK, from Pengcheng Yang.

 3) Fix divide by zero in sch_cake, from Wen Yang.

 4) Len passed to skb_put_padto() is wrong in qrtr code, from Carl
    Huang.

 5) cmd->obj.chunk is leaked in sctp code error paths, from Xin Long.

 6) cgroup bpf programs can be released out of order, fix from Roman
    Gushchin.

 7) Make sure stmmac debugfs entry name is changed when device name
    changes, from Jiping Ma.

 8) Fix memory leak in vlan_dev_set_egress_priority(), from Eric
    Dumazet.

 9) SKB leak in lan78xx usb driver, also from Eric Dumazet.

10) Ridiculous TCA_FQ_QUANTUM values configured can cause loops in fq
    packet scheduler, reject them. From Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
  tipc: fix wrong connect() return code
  tipc: fix link overflow issue at socket shutdown
  netfilter: ipset: avoid null deref when IPSET_ATTR_LINENO is present
  netfilter: conntrack: dccp, sctp: handle null timeout argument
  atm: eni: fix uninitialized variable warning
  macvlan: do not assume mac_header is set in macvlan_broadcast()
  net: sch_prio: When ungrafting, replace with FIFO
  mlxsw: spectrum_qdisc: Ignore grafting of invisible FIFO
  MAINTAINERS: Remove myself as co-maintainer for qcom-ethqos
  gtp: fix bad unlock balance in gtp_encap_enable_socket
  pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
  tipc: remove meaningless assignment in Makefile
  tipc: do not add socket.o to tipc-y twice
  net: stmmac: dwmac-sun8i: Allow all RGMII modes
  net: stmmac: dwmac-sunxi: Allow all RGMII modes
  net: usb: lan78xx: fix possible skb leak
  net: stmmac: Fixed link does not need MDIO Bus
  vlan: vlan_changelink() should propagate errors
  vlan: fix memory leak in vlan_dev_set_egress_priority
  stmmac: debugfs entry name is not be changed when udev rename device name.
  ...
2020-01-09 10:34:07 -08:00
Martin KaFai Lau
09903869f6 bpf: Add bpf_dctcp example
This patch adds a bpf_dctcp example.  It currently does not do
no-ECN fallback but the same could be done through the cgrp2-bpf.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200109003517.3856825-1-kafai@fb.com
2020-01-09 08:46:18 -08:00
Stanislav Fomichev
e43002242a selftests/bpf: Restore original comm in test_overhead
test_overhead changes task comm in order to estimate BPF trampoline
overhead but never sets the comm back to the original one.
We have the tests (like core_reloc.c) that have 'test_progs'
as hard-coded expected comm, so let's try to preserve the
original comm.

Currently, everything works because the order of execution is:
first core_recloc, then test_overhead; but let's make it a bit
future-proof.

Other related changes: use 'test_overhead' as new comm instead of
'test' to make it easy to debug and drop '\n' at the end.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Petar Penkov <ppenkov@google.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200108192132.189221-1-sdf@google.com
2020-01-09 08:42:07 -08:00
Xiaoyao Li
5e3d394fdd KVM: VMX: Fix the spelling of CPU_BASED_USE_TSC_OFFSETTING
The mis-spelling is found by checkpatch.pl, so fix them.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-08 18:15:59 +01:00
Xiaoyao Li
4e2a0bc56a KVM: VMX: Rename NMI_PENDING to NMI_WINDOW
Rename the NMI-window exiting related definitions to match the latest
Intel SDM. No functional changes.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-08 18:15:59 +01:00
Xiaoyao Li
9dadc2f918 KVM: VMX: Rename INTERRUPT_PENDING to INTERRUPT_WINDOW
Rename interrupt-windown exiting related definitions to match the
latest Intel SDM. No functional changes.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-08 18:15:59 +01:00
David Ahern
17aa23ee72 fcnal-test: Fix vrf argument in local tcp tests
The recent MD5 tests added duplicate configuration in the default VRF.
This change exposed a bug in existing tests designed to verify no
connection when client and server are not in the same domain. The
server should be running bound to the vrf device with the client run
in the default VRF (the -2 option is meant for validating connection
data). Fix the option for both tests.

While technically this is a bug in previous releases, the tests are
properly failing since the default VRF does not have any routing
configuration so there really is no need to backport to prior releases.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-06 13:46:39 -08:00
Amit Cohen
ef11ffa21b selftests: forwarding: router: Add test case for destination IP link-local
Add test case to check that packets are not dropped when they need to be
routed and their destination is link-local, i.e., 169.254.0.0/16.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-06 13:38:37 -08:00
Amit Cohen
6e734f863c selftests: forwarding: router: Add test case for source IP equals destination IP
Add test case to check that packets are not dropped when they need to be
routed and their source IP equals to their destination IP.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-06 13:38:36 -08:00
Amit Cohen
59b3a4f348 selftests: forwarding: router: Add test case for multicast destination MAC mismatch
Add test case to check that packets are not dropped when they need to be
routed and their multicast MAC mismatched to their multicast destination
IP.

i.e., destination IP is multicast and
	* for IPV4: DMAC !=  {01-00-5E-0 (25 bits), DIP[22:0]}
	* for IPV6: DMAC !=  {33-33-0 (16 bits), DIP[31:0]}

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-06 13:38:36 -08:00
Amit Cohen
383dbf70d9 selftests: forwarding: router: Add test case for source IP in class E
Add test case to check that packets are not dropped when they need to be
routed and their source IP in class E, (i.e., 240.0.0.0 –
255.255.255.254).

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-06 13:38:36 -08:00