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Since the following commit:
cd77849a69cf ("objtool: Fix GCC 8 cold subfunction detection for aliased functions")
... if the kernel is built with EXTRA_CFLAGS='-fno-reorder-functions',
objtool can get stuck in an infinite loop.
That flag causes the new GCC 8 cold subfunctions to be placed in .text
instead of .text.unlikely. But it also has an unfortunate quirk: in the
symbol table, the subfunction (e.g., nmi_panic.cold.7) is nested inside
the parent (nmi_panic).
That function overlap confuses objtool, and causes it to get into an
infinite loop in next_insn_same_func(). Here's Allan's description of
the loop:
"Objtool iterates through the instructions in nmi_panic using
next_insn_same_func. Once it reaches the end of nmi_panic at 0x534 it
jumps to 0x528 as that's the start of nmi_panic.cold.7. However, since
the instructions starting at 0x528 are still associated with nmi_panic
objtool will get stuck in a loop, continually jumping back to 0x528
after reaching 0x534."
Fix it by shortening the length of the parent function so that the
functions no longer overlap.
Reported-and-analyzed-by: Allan Xavier <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Cc: Allan Xavier <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/9e704c52bee651129b036be14feda317ae5606ae.1530136978.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <[email protected]>
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We want the staging/iio fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Daniel Borkmann says:
====================
pull-request: bpf 2018-07-01
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) A bpf_fib_lookup() helper fix to change the API before freeze to
return an encoding of the FIB lookup result and return the nexthop
device index in the params struct (instead of device index as return
code that we had before), from David.
2) Various BPF JIT fixes to address syzkaller fallout, that is, do not
reject progs when set_memory_*() fails since it could still be RO.
Also arm32 JIT was not using bpf_jit_binary_lock_ro() API which was
an issue, and a memory leak in s390 JIT found during review, from
Daniel.
3) Multiple fixes for sockmap/hash to address most of the syzkaller
triggered bugs. Usage with IPv6 was crashing, a GPF in bpf_tcp_close(),
a missing sock_map_release() routine to hook up to callbacks, and a
fix for an omitted bucket lock in sock_close(), from John.
4) Two bpftool fixes to remove duplicated error message on program load,
and another one to close the libbpf object after program load. One
additional fix for nfp driver's BPF offload to avoid stopping offload
completely if replace of program failed, from Jakub.
5) Couple of BPF selftest fixes that bail out in some of the test
scripts if the user does not have the right privileges, from Jeffrin.
6) Fixes in test_bpf for s390 when CONFIG_BPF_JIT_ALWAYS_ON is set
where we need to set the flag that some of the test cases are expected
to fail, from Kleber.
7) Fix to detangle BPF_LIRC_MODE2 dependency from CONFIG_CGROUP_BPF
since it has no relation to it and lirc2 users often have configs
without cgroups enabled and thus would not be able to use it, from Sean.
8) Fix a selftest failure in sockmap by removing a useless setrlimit()
call that would set a too low limit where at the same time we are
already including bpf_rlimit.h that does the job, from Yonghong.
9) Fix BPF selftest config with missing missing NET_SCHED, from Anders.
====================
Signed-off-by: David S. Miller <[email protected]>
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Remove options (in getopt() sense, i.e. starting with a dash like
-n or --NAME) while parsing arguments for bash completions. This
allows us to refer to position-dependent parameters better, and
complete options at any point.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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--bpffs is not suggested by bash completions.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Drop my author comments, those are from the early days of
bpftool and make little sense in tree, where we have quite
a few people contributing and git to attribute the work.
While at it bump some copyrights.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Make bpf_program__next() skip over '.text' section if object file
has pseudo calls. The '.text' section is hardly a program in that
case, it's more of a storage for code of functions other than main.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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libbpf used to be able to load programs from the default section
called '.text'. It's not very common to leave sections unnamed,
but if it happens libbpf will fail to load the programs reporting
-EINVAL from the kernel. The -EINVAL comes from bpf_obj_name_cpy()
because since 48cca7e44f9f ("libbpf: add support for bpf_call")
libbpf does not resolve program names for programs in '.text',
defaulting to '.text'. '.text', however, does not pass the
(isalnum(*src) || *src == '_') check in bpf_obj_name_cpy().
With few extra lines of code we can limit the pseudo call
assumptions only to objects which actually contain code relocations.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Users of bpf_object__open()/bpf_object__load() APIs may want to
load the programs and maps onto a device for offload. Allow
setting ifindex on those sub-objects.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Specify default section names for BPF_PROG_TYPE_LIRC_MODE2
and BPF_PROG_TYPE_LWT_SEG6LOCAL, these are the only two
missing right now.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Commit 4bfe3bd3cc35 ("tools/bpftool: use version from the kernel
source tree") added version to bpftool. The version used is
equal to the kernel version and obtained by running make kernelversion
against kernel source tree. Version is then communicated
to the sources with a command line define set in CFLAGS.
Use a simply expanded variable for the version, otherwise the
recursive make will run every time CFLAGS are used.
This brings the single-job compilation time for me from almost
16 sec down to less than 4 sec.
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"The biggest diffstat comes from self-test updates, plus there's entry
code fixes, 5-level paging related fixes, console debug output fixes,
and misc fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Clean up the printk()s in show_fault_oops()
x86/mm: Drop unneeded __always_inline for p4d page table helpers
x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y
selftests/x86/sigreturn: Do minor cleanups
selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
x86/entry/64/compat: Fix "x86/entry/64/compat: Preserve r8-r11 in int $0x80"
x86/mm: Don't free P4D table when it is folded at runtime
x86/entry/32: Add explicit 'l' instruction suffix
x86/mm: Get rid of KERN_CONT in show_fault_oops()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Tooling fixes mostly, plus a build warning fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
perf/core: Move inline keyword at the beginning of declaration
tools/headers: Pick up latest kernel ABIs
perf tools: Fix crash caused by accessing feat_ops[HEADER_LAST_FEATURE]
perf script: Fix crash because of missing evsel->priv
perf script: Add missing output fields in a hint
perf bench: Fix numa report output code
perf stat: Remove duplicate event counting
perf alias: Rebuild alias expression string to make it comparable
perf alias: Remove trailing newline when reading sysfs files
perf tools: Fix a clang 7.0 compilation error
tools include uapi: Synchronize bpf.h with the kernel
tools include uapi: Update if_link.h to pick IFLA_{BRPORT_ISOLATED,VXLAN_TTL_INHERIT}
tools include powerpc: Update arch/powerpc/include/uapi/asm/unistd.h copy to get 'rseq' syscall
perf tools: Update x86's syscall_64.tbl, adding 'io_pgetevents' and 'rseq'
tools headers uapi: Synchronize drm/drm.h
perf intel-pt: Fix packet decoding of CYC packets
perf tests: Add valid callback for parse-events test
perf tests: Add event parsing error handling to parse events test
perf report powerpc: Fix crash if callchain is empty
perf test session topology: Fix test on s390
...
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Pull block fixes from Jens Axboe:
"Small set of fixes for this series. Mostly just minor fixes, the only
oddball in here is the sg change.
The sg change came out of the stall fix for NVMe, where we added a
mempool and limited us to a single page allocation. CONFIG_SG_DEBUG
sort-of ruins that, since we'd need to account for that. That's
actually a generic problem, since lots of drivers need to allocate SG
lists. So this just removes support for CONFIG_SG_DEBUG, which I added
back in 2007 and to my knowledge it was never useful.
Anyway, outside of that, this pull contains:
- clone of request with special payload fix (Bart)
- drbd discard handling fix (Bart)
- SATA blk-mq stall fix (me)
- chunk size fix (Keith)
- double free nvme rdma fix (Sagi)"
* tag 'for-linus-20180629' of git://git.kernel.dk/linux-block:
sg: remove ->sg_magic member
drbd: Fix drbd_request_prepare() discard handling
blk-mq: don't queue more if we get a busy return
block: Fix cloning of requests with a special payload
nvme-rdma: fix possible double free of controller async event buffer
block: Fix transfer when chunk sectors exceeds max
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Commit 546eb0317cfa "libnvdimm, pmem: Do not flush power-fail protected CPU caches"
fixed the write_cache detection to correctly show the lack of a write
cache based on the platform capabilities described in the ACPI NFIT. The
nfit_test unit tests expected a write cache to be present, so change the
nfit test namespaces to only advertise a persistence domain limited to
the memory controller. This allows the kernel to show a write_cache
attribute, and the test behaviour remains unchanged.
Signed-off-by: Vishal Verma <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
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Add a scale test capable of validating that offloaded network
functionality is indeed functional at scale when configured to
the different KVD profiles available.
Start by testing offloaded routes are functional at scale by
passing traffic on each one of them in turn.
Signed-off-by: Yuval Mintz <[email protected]>
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a wrapper around mlxsw/mirror_gre_scale.sh that parameterized number
of offloadable mirrors on Spectrum machines.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Test that it's possible to offload a given number of mirrors.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a wrapper around mlxsw/tc_flower_scale.sh that parameterizes the
generic tc flower scale test template with Spectrum-specific target
values.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add test of capacity to offload flower.
This is a generic portion of the test that is meant to be called from a
driver that supplies a particular number of rules to be tested with.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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IPv4 routes in Spectrum are based on the kvd single-hash, but as it's
a hash we need to assume we cannot reach 100% of its capacity.
Add a wrapper that provides us with good/bad target numbers for the
Spectrum ASIC.
Signed-off-by: Yuval Mintz <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
[[email protected]: Drop shebang.]
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This test aims for both stand alone and internal usage by the resource
infra. The test receives the number routes to offload and checks:
- The routes were offloaded correctly
- Traffic for each route.
Signed-off-by: Arkadi Sharshevsky <[email protected]>
Signed-off-by: Yuval Mintz <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a selftest that can be used to perform basic sanity of the devlink
resource API as well as test the behavior of KVD manipulation in the
driver.
This is the first case of a HW-only test - in order to test the devlink
resource a driver capable of exposing resources has to be provided
first.
Signed-off-by: Yuval Mintz <[email protected]>
[[email protected]: Extracted two patches out of this patch. Tweaked
commit message.]
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This library builds on top of devlink_lib.sh and contains functionality
specific to Spectrum ASICs, e.g., re-partitioning the various KVD
sub-parts.
Signed-off-by: Yuval Mintz <[email protected]>
[[email protected]: Split this out from another patch. Fix line length
in devlink_sp_read_kvd_defaults().]
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This helper library contains wrappers to devlink functionality agnostic
to the underlying device.
Signed-off-by: Yuval Mintz <[email protected]>
[[email protected]: Split this out from another patch.]
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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setup_wait() and tc_offload_check() both assume that all NUM_NETIFS
interfaces are relevant for a given test. However, the scale test script
acts as an umbrella for a number of sub-tests, some of which may not
require all the interfaces.
Thus it's suboptimal for tc_offload_check() to query all the interfaces.
In case of setup_wait() it's incorrect, because the sub-test in question
of course doesn't configure any interfaces beyond what it needs, and
setup_wait() then ends up waiting indefinitely for the extraneous
interfaces to come up.
For that reason, give setup_wait() and tc_offload_check() an optional
parameter with a number of interfaces to probe. Fall back to global
NUM_NETIFS if the parameter is not given.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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In the scale testing scenarios, one usually has a condition that is
expected to either fail, or pass, depending on which side of the scale
is being tested.
To capture this logic, add a function check_err_fail(), which dispatches
either to check_err() or check_fail(), depending on the value of the
first argument, should_fail.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Yuval Mintz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The devlink related scripts are mlxsw-specific. As a result, they'll
reside in a different directory - but would still need the common logic
implemented in lib.sh.
So as a preliminary step, allow lib.sh to be sourced from other
directories as well.
Signed-off-by: Yuval Mintz <[email protected]>
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Create unittests for the tc tunnel_key action.
v2:
For the tests expecting failures, added non-zero exit codes in the
teardowns. This prevents those tests from failing if the act_tunnel_key
module is unloaded.
Signed-off-by: Keara Leibovitz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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When running the test on soft devices, there's no mechanism to
gratuitously start resolving the neighbor for remote tunnel endpoint.
So instead of passively waiting, wait for the device to be up, and then
probe the neighbor with a ping.
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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When running mirror_gre_bridge_1d_vlan tests on veth, several issues
cause spurious failures:
- vlan_ethtype should be ip, not ipv6 even in mirror-to-ip6gretap case,
because the overlay packet is still IPv4.
- Similarly ip_proto matches the innermost IP protocol, so can't be used
to filter out GRE packet. Drop the corresponding condition.
- Because the above fixes the filters to match in slow path as well,
they need to be made skip_hw so as not to double-count packets.
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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There are several cases where traffic that would normally be forwarded
in silicon needs to be observed in slow path. That's achieved by
trapping such traffic, and the functions trap_install() and
trap_uninstall() realize that. However, such treatment is obviously
wrong if the device in question is actually a soft device not backed by
an ASIC.
Therefore try to trap if possible, but fall back to inserting a continue
if not.
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Split out of setup_wait() a function setup_wait_dev() that waits for a
single device. This gives tests the opportunity to wait for a selected
device after they tinkered with its upness.
Signed-off-by: Petr Machata <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This was introduced more than a decade ago when sg chaining was
added, but we never really caught anything with it. The scatterlist
entry size can be critical, since drivers allocate it, so remove
the magic member. Recently it's been triggering allocation stalls
and failures in NVMe.
Tested-by: Jordan Glover <[email protected]>
Acked-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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fib_tests.sh became non-executable at some point. This is
what happens:
selftests: net: fib_tests.sh: Warning: file fib_tests.sh is
not executable, correct this.
not ok 1..11 selftests: net: fib_tests.sh [FAIL]
Fixes: d69faad76584 ("selftests: fib_tests: Add prefix route tests with metric")
Signed-off-by: Daniel Díaz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Using the netdevsim as a device for testing, try out the XFRM commands
for setting up IPsec hardware offloads.
Signed-off-by: Shannon Nelson <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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We really shouldn't mess with local system settings, so let's
use the already created dummy device instead for ipsec testing.
Oh, and let's put the temp file into a proper directory.
Signed-off-by: Shannon Nelson <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Following the custom from the other functions, clear the global
ret code before starting the test so as to not have previously
failed tests cause us to thing this test has failed.
Reported-by: Anders Roxell <[email protected]>
Signed-off-by: Shannon Nelson <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Added an extreme-case test for all 7 csum action headers.
Signed-off-by: Keara Leibovitz <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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TCP Fast Open is triggered by sys_sendmsg with MSG_FASTOPEN flag for
SOCK_STREAM socket.
Even though it's sys_sendmsg, it eventually calls __inet_stream_connect
the same way sys_connect does for TCP. __inet_stream_connect, in turn,
already has BPF hooks for sys_connect.
That means TFO is already covered by BPF_CGROUP_INET{4,6}_CONNECT and
the only missing piece is selftest. The patch adds selftest for TFO.
Signed-off-by: Andrey Ignatov <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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Add two new helper functions to trace_helpers that supports polling
multiple perf file descriptors for events. These are used to the XDP
perf_event_output example, which needs to work with one perf fd per CPU.
Reviewed-by: Jakub Kicinski <[email protected]>
Signed-off-by: Toke Høiland-Jørgensen <[email protected]>
Acked-by: Song Liu <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
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We have short names for the requested and resulting register values.
Use them instead of spelling out the whole register entry for each
case.
Signed-off-by: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/bb3bc1f923a2f6fe7912d22a1068fe29d6033d38.1530076529.git.luto@kernel.org
Signed-off-by: Ingo Molnar <[email protected]>
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When I wrote the sigreturn test, I didn't realize that AMD's busted
IRET behavior was different from Intel's busted IRET behavior:
On AMD CPUs, the CPU leaks the high 32 bits of the kernel stack pointer
to certain userspace contexts. Gee, thanks. There's very little
the kernel can do about it. Modify the test so it passes.
Signed-off-by: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/86e7fd3564497f657de30a36da4505799eebef01.1530076529.git.luto@kernel.org
Signed-off-by: Ingo Molnar <[email protected]>
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ASCII art diagrams are well suited for presenting the topology that a
test uses while being easy to embed directly in the test file iteslf.
They make the information very easy to grasp even for simple topologies,
and for more complex ones they are almost essential, as figuring out the
interconnects from the script itself proves to be difficult.
Therefore state the requirement for topology ASCII art in README.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Add a GRE-tunneling test such that there are two tunnels involved, with
a multipath route listing both as next hops. Similarly to
router_multipath.sh, test that the distribution of traffic to the
tunnels honors the configured weights.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The function simple_if_init() does two things: it creates a VRF, then
moves an interface into this VRF and configures addresses. The latter
comes in handy when adding more interfaces into a VRF later on. The
situation is similar for simple_if_fini().
Therefore split the interface remastering and address de/initialization
logic to a new pair of helpers __simple_if_init() / __simple_if_fini(),
and defer to these helpers from simple_if_init() and simple_if_fini().
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The GRE multipath tests need stats on an egress counter. Change
tc_rule_stats_get() to take direction as an optional argument, with
default of ingress.
Take the opportunity to change line continuation character from | to \.
Move the | to the next line, which indent.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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- Change the indentation of the function body from 7 spaces to one tab.
- Move initialization of weights_ratio up so that it can be referenced
from the error message about packet difference being zero.
- Move |'s consistently to continuation line, which reindent.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This function will be useful for the GRE multipath test that is coming
later.
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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The IP addresses of tunnel endpoint at H3 are set at the VLAN device
$h3.555. Therefore when test_gretap_untagged_egress() sets vlan 555 to
egress untagged at $swp3, $h3's rp_filter rejects these packets. The
test then spuriously fails.
Therefore turn off net.ipv4.conf.{all, $h3}.rp_filter.
Fixes: 9c7c8a82442c ("selftests: forwarding: mirror_gre_vlan_bridge_1q: Add more tests")
Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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