8330 Commits

Author SHA1 Message Date
Ricardo Koller
1883458638 KVM: arm64: selftests: Add test for legacy GICv3 REDIST base partially above IPA range
Add a new test into vgic_init which checks that the first vcpu fails to
run if there is not sufficient REDIST space below the addressable IPA
range.  This only applies to the KVM_VGIC_V3_ADDR_TYPE_REDIST legacy API
as the required REDIST space is not know when setting the DIST region.

Note that using the REDIST_REGION API results in a different check at
first vcpu run: that the number of redist regions is enough for all
vcpus. And there is already a test for that case in, the first step of
test_v3_new_redist_regions.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-11-ricarkol@google.com
2021-10-11 09:31:43 +01:00
Ricardo Koller
2dcd9aa1c3 KVM: arm64: selftests: Add tests for GIC redist/cpuif partially above IPA range
Add tests for checking that KVM returns the right error when trying to
set GICv2 CPU interfaces or GICv3 Redistributors partially above the
addressable IPA range. Also tighten the IPA range by replacing
KVM_CAP_ARM_VM_IPA_SIZE with the IPA range currently configured for the
guest (i.e., the default).

The check for the GICv3 redistributor created using the REDIST legacy
API is not sufficient as this new test only checks the check done using
vcpus already created when setting the base. The next commit will add
the missing test which verifies that the KVM check is done at first vcpu
run.

Signed-off-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-10-ricarkol@google.com
2021-10-11 09:31:42 +01:00
Ricardo Koller
c44df5f9ff KVM: arm64: selftests: Add some tests for GICv2 in vgic_init
Add some GICv2 tests: general KVM device tests and DIST/CPUIF overlap
tests.  Do this by making test_vcpus_then_vgic and test_vgic_then_vcpus
in vgic_init GIC version agnostic.

Signed-off-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-9-ricarkol@google.com
2021-10-11 09:31:42 +01:00
Ricardo Koller
46fb941bc0 KVM: arm64: selftests: Make vgic_init/vm_gic_create version agnostic
Make vm_gic_create GIC version agnostic in the vgic_init test. Also
add a nr_vcpus arg into it instead of defaulting to NR_VCPUS.

No functional change.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-8-ricarkol@google.com
2021-10-11 09:31:42 +01:00
Ricardo Koller
3f4db37e20 KVM: arm64: selftests: Make vgic_init gic version agnostic
As a preparation for the next commits which will add some tests for
GICv2, make aarch64/vgic_init GIC version agnostic. Add a new generic
run_tests function(gic_dev_type) that starts all applicable tests using
GICv3 or GICv2. GICv2 tests are attempted if GICv3 is not available in
the system. There are currently no GICv2 tests, but the test passes now
in GICv2 systems.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211005011921.437353-7-ricarkol@google.com
2021-10-11 09:31:42 +01:00
Ilya Leoshkevich
5319255b8d selftests/bpf: Skip verifier tests that fail to load with ENOTSUPP
The verifier tests added in commit c48e51c8b07a ("bpf: selftests: Add
selftests for module kfunc support") fail on s390, since the JIT does
not support calling kernel functions. This is most likely an issue for
all the other non-Intel arches, as well as on Intel with
!CONFIG_DEBUG_INFO_BTF or !CONFIG_BPF_JIT.

Trying to check for messages from all the possible add_kfunc_call()
failure cases in test_verifier looks pointless, so do a much simpler
thing instead: just like it's already done in do_prog_test_run(), skip
the tests that fail to load with ENOTSUPP.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211007173329.381754-1-iii@linux.ibm.com
2021-10-08 20:07:05 -07:00
Tianjia Zhang
e506342a03 selftests/tls: add SM4 GCM/CCM to tls selftests
Add new cipher as a variant of standard tls selftests.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20211008091745.42917-1-tianjia.zhang@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-08 16:58:46 -07:00
Yucong Sun
d3f7b1664d selfetest/bpf: Make some tests serial
Change tests that often fails in parallel execution mode to serial.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-15-fallentree@fb.com
2021-10-08 15:17:00 -07:00
Yucong Sun
5db02dd7f0 selftests/bpf: Fix pid check in fexit_sleep test
bpf_get_current_pid_tgid() returns u64, whose upper 32 bits are the same
as userspace getpid() return value.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-13-fallentree@fb.com
2021-10-08 15:17:00 -07:00
Yucong Sun
0f4feacc91 selftests/bpf: Adding pid filtering for atomics test
This make atomics test able to run in parallel with other tests.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-11-fallentree@fb.com
2021-10-08 15:17:00 -07:00
Yucong Sun
445e72c782 selftests/bpf: Make cgroup_v1v2 use its own port
This patch change cgroup_v1v2 use a different port, avoid conflict with
other tests.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-8-fallentree@fb.com
2021-10-08 15:10:43 -07:00
Yucong Sun
d719de0d2f selftests/bpf: Fix race condition in enable_stats
In parallel execution mode, this test now need to use atomic operation
to avoid race condition.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-7-fallentree@fb.com
2021-10-08 15:10:43 -07:00
Yucong Sun
e87c3434f8 selftests/bpf: Add per worker cgroup suffix
This patch make each worker use a unique cgroup base directory, thus
allowing tests that uses cgroups to run concurrently.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-5-fallentree@fb.com
2021-10-08 14:45:18 -07:00
Yucong Sun
6587ff58ce selftests/bpf: Allow some tests to be executed in sequence
This patch allows tests to define serial_test_name() instead of
test_name(), and this will make test_progs execute those in sequence
after all other tests finished executing concurrently.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-3-fallentree@fb.com
2021-10-08 14:38:02 -07:00
Yucong Sun
91b2c0afd0 selftests/bpf: Add parallelism to test_progs
This patch adds "-j" mode to test_progs, executing tests in multiple
process.  "-j" mode is optional, and works with all existing test
selection mechanism, as well as "-v", "-l" etc.

In "-j" mode, main process use UDS/SEQPACKET to communicate to each forked
worker, commanding it to run tests and collect logs. After all tests are
finished, a summary is printed. main process use multiple competing
threads to dispatch work to worker, trying to keep them all busy.

The test status will be printed as soon as it is finished, if there are
error logs, it will be printed after the final summary line.

By specifying "--debug", additional debug information on server/worker
communication will be printed.

Example output:
  > ./test_progs -n 15-20 -j
  [   12.801730] bpf_testmod: loading out-of-tree module taints kernel.
  Launching 8 workers.
  #20 btf_split:OK
  #16 btf_endian:OK
  #18 btf_module:OK
  #17 btf_map_in_map:OK
  #19 btf_skc_cls_ingress:OK
  #15 btf_dump:OK
  Summary: 6/20 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-2-fallentree@fb.com
2021-10-08 14:37:56 -07:00
Hou Tao
fa7f17d066 bpf/selftests: Add test for writable bare tracepoint
Add a writable bare tracepoint in bpf_testmod module, and
trigger its calling when reading /sys/kernel/bpf_testmod
with a specific buffer length. The reading will return
the value in writable context if the early return flag
is enabled in writable context.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211004094857.30868-4-hotforest@gmail.com
2021-10-08 13:22:57 -07:00
Quentin Monnet
d7db0a4e8d bpftool: Add install-bin target to install binary only
With "make install", bpftool installs its binary and its bash completion
file. Usually, this is what we want. But a few components in the kernel
repository (namely, BPF iterators and selftests) also install bpftool
locally before using it. In such a case, bash completion is not
necessary and is just a useless build artifact.

Let's add an "install-bin" target to bpftool, to offer a way to install
the binary only.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-13-quentin@isovalent.com
2021-10-08 12:02:40 -07:00
Quentin Monnet
87ee33bfdd selftests/bpf: Better clean up for runqslower in test_bpftool_build.sh
The script test_bpftool_build.sh attempts to build bpftool in the
various supported ways, to make sure nothing breaks.

One of those ways is to run "make tools/bpf" from the root of the kernel
repository. This command builds bpftool, along with the other tools
under tools/bpf, and runqslower in particular. After running the
command and upon a successful bpftool build, the script attempts to
cleanup the generated objects. However, after building with this target
and in the case of runqslower, the files are not cleaned up as expected.

This is because the "tools/bpf" target sets $(OUTPUT) to
.../tools/bpf/runqslower/ when building the tool, causing the object
files to be placed directly under the runqslower directory. But when
running "cd tools/bpf; make clean", the value for $(OUTPUT) is set to
".output" (relative to the runqslower directory) by runqslower's
Makefile, and this is where the Makefile looks for files to clean up.

We cannot easily fix in the root Makefile (where "tools/bpf" is defined)
or in tools/scripts/Makefile.include (setting $(OUTPUT)), where changing
the way the output variables are passed would likely have consequences
elsewhere. We could change runqslower's Makefile to build in the
repository instead of in a dedicated ".output/", but doing so just to
accommodate a test script doesn't sound great. Instead, let's just make
sure that we clean up runqslower properly by adding the correct command
to the script.

This will attempt to clean runqslower twice: the first try with command
"cd tools/bpf; make clean" will search for tools/bpf/runqslower/.output
and fail to clean it (but will still clean the other tools, in
particular bpftool), the second one (added in this commit) sets the
$(OUTPUT) variable like for building with the "tool/bpf" target and
should succeed.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-12-quentin@isovalent.com
2021-10-08 12:02:38 -07:00
Quentin Monnet
be79505caf tools/runqslower: Install libbpf headers when building
API headers from libbpf should not be accessed directly from the
library's source directory. Instead, they should be exported with "make
install_headers". Let's make sure that runqslower installs the
headers properly when building.

We use a libbpf_hdrs target to mark the logical dependency on libbpf's
headers export for a number of object files, even though the headers
should have been exported at this time (since bpftool needs them, and is
required to generate the skeleton or the vmlinux.h).

When descending from a parent Makefile, the specific output directories
for building the library and exporting the headers are configurable with
BPFOBJ_OUTPUT and BPF_DESTDIR, respectively. This is in addition to
OUTPUT, on top of which those variables are constructed by default.

Also adjust the Makefile for the BPF selftests. We pass a number of
variables to the "make" invocation, because we want to point runqslower
to the (target) libbpf shared with other tools, instead of building its
own version. In addition, runqslower relies on (target) bpftool, and we
also want to pass the proper variables to its Makefile so that bpftool
itself reuses the same libbpf.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-6-quentin@isovalent.com
2021-10-08 11:54:15 -07:00
Quentin Monnet
1478994aad tools/resolve_btfids: Install libbpf headers when building
API headers from libbpf should not be accessed directly from the
library's source directory. Instead, they should be exported with "make
install_headers". Let's make sure that resolve_btfids installs the
headers properly when building.

When descending from a parent Makefile, the specific output directories
for building the library and exporting the headers are configurable with
LIBBPF_OUT and LIBBPF_DESTDIR, respectively. This is in addition to
OUTPUT, on top of which those variables are constructed by default.

Also adjust the Makefile for the BPF selftests in order to point to the
(target) libbpf shared with other tools, instead of building a version
specific to resolve_btfids. Remove libbpf's order-only dependencies on
the include directories (they are created by libbpf and don't need to
exist beforehand).

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-5-quentin@isovalent.com
2021-10-08 11:54:11 -07:00
Quentin Monnet
f012ade10b bpftool: Install libbpf headers instead of including the dir
Bpftool relies on libbpf, therefore it relies on a number of headers
from the library and must be linked against the library. The Makefile
for bpftool exposes these objects by adding tools/lib as an include
directory ("-I$(srctree)/tools/lib"). This is a working solution, but
this is not the cleanest one. The risk is to involuntarily include
objects that are not intended to be exposed by the libbpf.

The headers needed to compile bpftool should in fact be "installed" from
libbpf, with its "install_headers" Makefile target. In addition, there
is one header which is internal to the library and not supposed to be
used by external applications, but that bpftool uses anyway.

Adjust the Makefile in order to install the header files properly before
compiling bpftool. Also copy the additional internal header file
(nlattr.h), but call it out explicitly. Build (and install headers) in a
subdirectory under bpftool/ instead of tools/lib/bpf/. When descending
from a parent Makefile, this is configurable by setting the OUTPUT,
LIBBPF_OUTPUT and LIBBPF_DESTDIR variables.

Also adjust the Makefile for BPF selftests, so as to reuse the (host)
libbpf compiled earlier and to avoid compiling a separate version of the
library just for bpftool.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-4-quentin@isovalent.com
2021-10-08 11:48:43 -07:00
Yucong Sun
7e3cbd3405 selftests/bpf: Fix btf_dump test under new clang
New clang version changed ([0]) type name in dwarf from "long int" to "long",
this is causing btf_dump tests to fail.

  [0] f6a561c4d6

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211008173139.1457407-1-fallentree@fb.com
2021-10-08 11:08:11 -07:00
Amit Cohen
7f63cdde50 selftests: mlxsw: devlink_trap_tunnel_ipip: Send a full-length key
As part of adding same test for GRE tunnel with IPv6 underlay, missing
bytes for key were found.

mausezahn does not fill zeros between two colons, so send them
explicitly. For example, use "00:00:00:E9:" instead of ":E9:"

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:59 +01:00
Amit Cohen
8bb0ebd522 selftests: mlxsw: devlink_trap_tunnel_ipip: Remove code duplication
As part of adding same test for GRE tunnel with IPv6 underlay, an
optional improvement was found - call ipip_payload_get from
ecn_payload_get, so do not duplicate the code which creates the payload.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:59 +01:00
Amit Cohen
c473f723f9 selftests: mlxsw: devlink_trap_tunnel_ipip: Align topology drawing correctly
As part of adding same test for GRE tunnel with IPv6 underlay, wrong
alignments were found, fix them.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:59 +01:00
Amit Cohen
4bb6cce00a selftests: mlxsw: devlink_trap_tunnel_ipip6: Add test case for IPv6 decap_error
IPv6 underlay support was added, add test to check that "decap_error" trap
is triggered under the right conditions and that devlink counters increase.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:58 +01:00
Amit Cohen
4b3d967b5c selftests: forwarding: Add IPv6 GRE hierarchical tests
Add tests that check IPv6-in-IPv6, IPv4-in-IPv6 and MTU change of GRE
tunnel. The tests use hierarchical model - the tunnel is bound to a device
in a different VRF.

These tests can be run with TC_FLAG=skip_sw, so then they will verify
that packets go through hardware as part of enacp and decap phases.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:58 +01:00
Amit Cohen
7df29960fa selftests: forwarding: Add IPv6 GRE flat tests
Add tests that check IPv6-in-IPv6, IPv4-in-IPv6 and MTU change of GRE
tunnel. The tests use flat model - overlay and underlay share the same VRF.

These tests can be run with TC_FLAG=skip_sw, so then they will verify
that packets go through hardware as part of enacp and decap phases.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:58 +01:00
Amit Cohen
c08d227290 testing: selftests: tc_common: Add tc_check_at_least_x_packets()
Add function that checks that at least X packets hit the tc rule.
There are cases that it is not possible to catch only the interesting
packets, so then, it is possible to send many packets and verify that at
least this amount of packets hit the rule.

This function will be used in the next patch for general tc rule that
can be used to test both software and hardware.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:58 +01:00
Amit Cohen
45d45e5323 testing: selftests: forwarding.config.sample: Add tc flag
Add TC_FLAG value to tests topology.
This flag supposed to be skip_sw/skip_hw which means do not filter by
software/hardware.

This can be useful for adding tests to forwarding directory, and be able
to verify that packets go through the hardware.

When the flag is not set or set to 'skip_hw', tests can still be executed
with veth pairs.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-08 16:40:57 +01:00
Dave Marchevsky
dd65acf72d selftests/bpf: Remove SEC("version") from test progs
Since commit 6c4fc209fcf9d ("bpf: remove useless version check for prog
load") these "version" sections, which result in bpf_attr.kern_version
being set, have been unnecessary.

Remove them so that it's obvious to folks using selftests as a guide that
"modern" BPF progs don't need this section.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007231234.2223081-1-davemarchevsky@fb.com
2021-10-07 22:01:56 -07:00
Song Liu
aa67fdb464 selftests/bpf: Skip the second half of get_branch_snapshot in vm
VMs running on upstream 5.12+ kernel support LBR. However,
bpf_get_branch_snapshot couldn't stop the LBR before too many entries
are flushed. Skip the hit/waste test for VMs before we find a proper fix
for LBR in VM.

Fixes: 025bd7c753aa ("selftests/bpf: Add test for bpf_get_branch_snapshot")
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007050231.728496-1-songliubraving@fb.com
2021-10-07 21:51:04 -07:00
Jakub Kicinski
9fe1155233 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-07 15:24:06 -07:00
André Almeida
9d57f7c797 selftests: futex: Test sys_futex_waitv() wouldblock
Test if futex_waitv() returns -EWOULDBLOCK correctly when the expected
value is different from the actual value for a waiter.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-22-andrealmeid@collabora.com
2021-10-07 13:51:12 +02:00
André Almeida
02e56ccbae selftests: futex: Test sys_futex_waitv() timeout
Test if the futex_waitv timeout is working as expected, using the
supported clockid options.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-21-andrealmeid@collabora.com
2021-10-07 13:51:12 +02:00
André Almeida
5e59c1d1c7 selftests: futex: Add sys_futex_waitv() test
Create a new file to test the waitv mechanism. Test both private and
shared futexes. Wake the last futex in the array, and check if the
return value from futex_waitv() is the right index.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-20-andrealmeid@collabora.com
2021-10-07 13:51:12 +02:00
Mark Brown
0ba1ce1e86 selftests: arm64: Add coverage of ptrace flags for SVE VL inheritance
Add a test that covers enabling and disabling of SVE vector length
inheritance via the ptrace interface.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20211005123537.976795-1-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2021-10-07 09:20:52 +01:00
Hengqi Chen
6f2b219b62 selftests/bpf: Switch to new bpf_object__next_{map,program} APIs
Replace deprecated bpf_{map,program}__next APIs with newly added
bpf_object__next_{map,program} APIs, so that no compilation warnings
emit.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211003165844.4054931-3-hengqi.chen@gmail.com
2021-10-06 12:34:02 -07:00
Jiri Olsa
189c83bdde selftest/bpf: Switch recursion test to use htab_map_delete_elem
Currently the recursion test is hooking __htab_map_lookup_elem
function, which is invoked both from bpf_prog and bpf syscall.

But in our kernel build, the __htab_map_lookup_elem gets inlined
within the htab_map_lookup_elem, so it's not trigered and the
test fails.

Fixing this by using htab_map_delete_elem, which is not inlined
for bpf_prog calls (like htab_map_lookup_elem is) and is used
directly as pointer for map_delete_elem, so it won't disappear
by inlining.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/YVnfFTL/3T6jOwHI@krava
2021-10-06 12:34:02 -07:00
Andrii Nakryiko
9d05787223 selftests/bpf: Test new btf__add_btf() API
Add a test that validates that btf__add_btf() API is correctly copying
all the types from the source BTF into destination BTF object and
adjusts type IDs and string offsets properly.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211006051107.17921-4-andrii@kernel.org
2021-10-06 15:36:30 +02:00
Andrii Nakryiko
c65eb8082d selftests/bpf: Refactor btf_write selftest to reuse BTF generation logic
Next patch will need to reuse BTF generation logic, which tests every
supported BTF kind, for testing btf__add_btf() APIs. So restructure
existing selftests and make it as a single subtest that uses bulk
VALIDATE_RAW_BTF() macro for raw BTF dump checking.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211006051107.17921-3-andrii@kernel.org
2021-10-06 15:36:29 +02:00
Jie Meng
57a610f1c5 bpf, x64: Save bytes for DIV by reducing reg copies
Instead of unconditionally performing push/pop on %rax/%rdx in case of
division/modulo, we can save a few bytes in case of destination register
being either BPF r0 (%rax) or r3 (%rdx) since the result is written in
there anyway.

Also, we do not need to copy the source to %r11 unless the source is either
%rax, %rdx or an immediate.

For example, before the patch:

  22:   push   %rax
  23:   push   %rdx
  24:   mov    %rsi,%r11
  27:   xor    %edx,%edx
  29:   div    %r11
  2c:   mov    %rax,%r11
  2f:   pop    %rdx
  30:   pop    %rax
  31:   mov    %r11,%rax

After:

  22:   push   %rdx
  23:   xor    %edx,%edx
  25:   div    %rsi
  28:   pop    %rdx

Signed-off-by: Jie Meng <jmeng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211002035626.2041910-1-jmeng@fb.com
2021-10-06 15:24:36 +02:00
Kumar Kartikeya Dwivedi
c48e51c8b0 bpf: selftests: Add selftests for module kfunc support
This adds selftests that tests the success and failure path for modules
kfuncs (in presence of invalid kfunc calls) for both libbpf and
gen_loader. It also adds a prog_test kfunc_btf_id_list so that we can
add module BTF ID set from bpf_testmod.

This also introduces  a couple of test cases to verifier selftests for
validating whether we get an error or not depending on if invalid kfunc
call remains after elimination of unreachable instructions.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211002011757.311265-10-memxor@gmail.com
2021-10-05 17:07:42 -07:00
Kumar Kartikeya Dwivedi
f614f2c755 tools: Allow specifying base BTF file in resolve_btfids
This commit allows specifying the base BTF for resolving btf id
lists/sets during link time in the resolve_btfids tool. The base BTF is
set to NULL if no path is passed. This allows resolving BTF ids for
module kernel objects.

Also, drop the --no-fail option, as it is only used in case .BTF_ids
section is not present, instead make no-fail the default mode. The long
option name is same as that of pahole.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211002011757.311265-5-memxor@gmail.com
2021-10-05 17:07:41 -07:00
Li Zhijian
1c36432b27 kselftests/sched: cleanup the child processes
Previously, 'make -C sched run_tests' will block forever when it occurs
something wrong where the *selftests framework* is waiting for its child
processes to exit.

[root@iaas-rpma sched]# ./cs_prctl_test

 ## Create a thread/process/process group hiearchy
Not a core sched system
tid=74985, / tgid=74985 / pgid=74985: ffffffffffffffff
Not a core sched system
    tid=74986, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74988, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74989, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74990, / tgid=74986 / pgid=74985: ffffffffffffffff
Not a core sched system
    tid=74987, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74991, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74992, / tgid=74987 / pgid=74985: ffffffffffffffff
Not a core sched system
        tid=74993, / tgid=74987 / pgid=74985: ffffffffffffffff

Not a core sched system
(268) FAILED: get_cs_cookie(0) == 0

 ## Set a cookie on entire process group
-1 = prctl(62, 1, 0, 2, 0)
core_sched create failed -- PGID: Invalid argument
(cs_prctl_test.c:272) -
[root@iaas-rpma sched]# ps
    PID TTY          TIME CMD
   4605 pts/2    00:00:00 bash
  74986 pts/2    00:00:00 cs_prctl_test
  74987 pts/2    00:00:00 cs_prctl_test
  74999 pts/2    00:00:00 ps

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Chris Hyser <chris.hyser@oracle.com>
Link: https://lore.kernel.org/r/20210902024333.75983-1-lizhijian@cn.fujitsu.com
2021-10-05 15:51:43 +02:00
Linus Torvalds
f6274b06e3 linux-kselftest-fixes-5.15-rc5
This Kselftest fixes update for Linux 5.15-rc5 consists of a fix
 to implicit declaration warns in drivers/dma-buf test.
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Merge tag 'linux-kselftest-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "A fix to implicit declaration warns in drivers/dma-buf test"

* tag 'linux-kselftest-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: drivers/dma-buf: Fix implicit declaration warns
2021-10-04 14:33:30 -07:00
Justin Iurman
bf77b1400a selftests: net: Test for the IOAM encapsulation with IPv6
This patch adds support for testing the encap (ip6ip6) mode of IOAM.

Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-04 12:53:36 +01:00
Vladimir Oltean
434ef35095 selftests: net: mscc: ocelot: add a test for egress VLAN modification
For this test we are exercising the VCAP ES0 block's ability to match on
a packet with a given VLAN ID, and push an ES0 TAG A with a VID derived
from VID_A_VAL plus the classified VLAN.

$eth3.200 is the generator port
$eth0 is the bridged DUT port that receives
$eth1 is the bridged DUT port that forwards and rewrites VID 200 to 300
      on egress via VCAP ES0
$eth2 is the port that receives from the DUT port $eth1

Since the egress rewriting happens outside the bridging service, VID 300
does not need to be in the bridge VLAN table of $eth1.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-02 14:15:57 +01:00
Vladimir Oltean
4a907f6594 selftests: net: mscc: ocelot: rename the VLAN modification test to ingress
There will be one more VLAN modification selftest added, this time for
egress. Rename the one that exists right now to be more specific.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-02 14:15:57 +01:00
Vladimir Oltean
239f163cea selftests: net: mscc: ocelot: bring up the ports automatically
Looks like when I wrote the selftests I was using a network manager that
brought up the ports automatically. In order to not rely on that, let
the script open them up.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-02 14:15:57 +01:00