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2020-03-16kvm: selftests: Support dirty log initial-all-set testJay Zhou2-3/+16
Since the new capability KVM_DIRTY_LOG_INITIALLY_SET of KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 has been introduced, tweak the clear_dirty_log_test to use it. Signed-off-by: Jay Zhou <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Fix unknown ucall command assertsAndrew Jones7-8/+7
The TEST_ASSERT in x86_64/platform_info_test.c would have print 'ucall' instead of 'uc.cmd'. Also fix all uc.cmd format types. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add test for KVM_SET_USER_MEMORY_REGIONSean Christopherson5-0/+175
Add a KVM selftest to test moving the base gfn of a userspace memory region. Although the basic concept of moving memory regions is not x86 specific, the assumptions regarding large pages and MMIO shenanigans used to verify the correctness make this x86_64 only for the time being. Reviewed-by: Peter Xu <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Convert some printf's to pr_info'sAndrew Jones7-13/+13
We leave some printf's because they inform the user the test is being skipped. QUIET should not disable those. We also leave the printf's used for help text. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Rework debug message printingAndrew Jones6-44/+54
There were a few problems with the way we output "debug" messages. The first is that we used DEBUG() which is defined when NDEBUG is not defined, but NDEBUG will never be defined for kselftests because it relies too much on assert(). The next is that most of the DEBUG() messages were actually "info" messages, which users may want to turn off if they just want a silent test that either completes or asserts. Finally, a debug message output from a library function, and thus for all tests, was annoying when its information wasn't interesting for a test. Rework these messages so debug messages only output when DEBUG is defined and info messages output unless QUIET is defined. Also name the functions pr_debug and pr_info and make sure that when they're disabled we eat all the inputs. The later avoids unused variable warnings when the variables were only defined for the purpose of printing. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Time guest demand pagingBen Gardon3-1/+72
In order to quantify demand paging performance, time guest execution during demand paging. Signed-off-by: Ben Gardon <[email protected]> [Move timespec-diff to test_util.h] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Support multiple vCPUs in demand paging testBen Gardon1-82/+171
Most VMs have multiple vCPUs, the concurrent execution of which has a substantial impact on demand paging performance. Add an option to create multiple vCPUs to each access disjoint regions of memory. Signed-off-by: Ben Gardon <[email protected]> [guest_code() can't return, use GUEST_ASSERT(). Ensure the number of guests pages is compatible with the host.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add support for vcpu_args_set to aarch64 and s390xBen Gardon2-0/+71
Currently vcpu_args_set is only implemented for x86. This makes writing tests with multiple vCPUs difficult as each guest vCPU must either a.) do the same thing or b.) derive some kind of unique token from it's registers or the architecture. To simplify the process of writing tests with multiple vCPUs for s390 and aarch64, add set args functions for those architectures. Signed-off-by: Ben Gardon <[email protected]> [Fixed array index (num => i) and made some style changes.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Pass args to vCPU in global vCPU args structBen Gardon1-11/+27
In preparation for supporting multiple vCPUs in the demand paging test, pass arguments to the vCPU in a consolidated global struct instead of syncing multiple globals. Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add memory size parameter to the demand paging testBen Gardon4-22/+90
Add an argument to allow the demand paging test to work on larger and smaller guest sizes. Signed-off-by: Ben Gardon <[email protected]> [Rewrote parse_size() to simplify and provide user more flexibility as to how sizes are input. Also fixed size overflow assert.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add configurable demand paging delayBen Gardon1-7/+25
When running the demand paging test with the -u option, the User Fault FD handler essentially adds an arbitrary delay to page fault resolution. To enable better simulation of a real demand paging scenario, add a configurable delay to the UFFD handler. Reviewed-by: Peter Xu <[email protected]> Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add demand paging content to the demand paging testBen Gardon2-4/+209
The demand paging test is currently a simple page access test which, while potentially useful, doesn't add much versus the existing dirty logging test. To improve the demand paging test, add a basic userfaultfd demand paging implementation. Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-15Merge tag 'perf-urgent-2020-03-15' of ↵Linus Torvalds29-124/+132
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: "A pile of perf fixes: Kernel side: - AMD uncore driver: Replace the open coded sanity check with the core variant, which provides the correct error code and also leaves a hint in dmesg Tooling: - Fix the stdio input handling with glibc versions >= 2.28 - Unbreak the futex-wake benchmark which was reduced to 0 test threads due to the conversion to cpumaps - Initialize sigaction structs before invoking sys_sigactio() - Plug the mapfile memory leak in perf jevents - Fix off by one relative directory includes - Fix an undefined string comparison in perf diff" * tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag tools: Fix off-by 1 relative directory includes perf jevents: Fix leak of mapfile memory perf bench: Clear struct sigaction before sigaction() syscall perf bench futex-wake: Restore thread count default to online CPU count perf top: Fix stdio interface input handling with glibc 2.28+ perf diff: Fix undefined string comparision spotted by clang's -Wstring-compare perf symbols: Don't try to find a vmlinux file when looking for kernel modules perf bench: Share some global variables to fix build with gcc 10 perf parse-events: Use asprintf() instead of strncpy() to read tracepoint files perf env: Do not return pointers to local variables perf tests bp_account: Make global variable static
2020-03-14selftests: mlxsw: RED: Test RED ECN nodrop offloadPetr Machata3-8/+61
Extend RED testsuite to cover the new nodrop mode of RED-ECN. This test is really similar to ECN test, diverging only in the last step, where UDP traffic should go to backlog instead of being dropped. Thus extract a common helper, ecn_test_common(), make do_ecn_test() into a relatively simple wrapper, and add another one, do_ecn_nodrop_test(). Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-14selftests: qdiscs: RED: Add nodrop testsPetr Machata1-0/+68
Add tests for the new "nodrop" flag. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-14selftests: qdiscs: Add TDC test for REDPetr Machata1-0/+117
Add a handful of tests for creating RED with different flags. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Roman Mashak <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller65-472/+2380
Daniel Borkmann says: ==================== pull-request: bpf-next 2020-03-13 The following pull-request contains BPF updates for your *net-next* tree. We've added 86 non-merge commits during the last 12 day(s) which contain a total of 107 files changed, 5771 insertions(+), 1700 deletions(-). The main changes are: 1) Add modify_return attach type which allows to attach to a function via BPF trampoline and is run after the fentry and before the fexit programs and can pass a return code to the original caller, from KP Singh. 2) Generalize BPF's kallsyms handling and add BPF trampoline and dispatcher objects to be visible in /proc/kallsyms so they can be annotated in stack traces, from Jiri Olsa. 3) Extend BPF sockmap to allow for UDP next to existing TCP support in order in order to enable this for BPF based socket dispatch, from Lorenz Bauer. 4) Introduce a new bpftool 'prog profile' command which attaches to existing BPF programs via fentry and fexit hooks and reads out hardware counters during that period, from Song Liu. Example usage: bpftool prog profile id 337 duration 3 cycles instructions llc_misses 4228 run_cnt 3403698 cycles (84.08%) 3525294 instructions # 1.04 insn per cycle (84.05%) 13 llc_misses # 3.69 LLC misses per million isns (83.50%) 5) Batch of improvements to libbpf, bpftool and BPF selftests. Also addition of a new bpf_link abstraction to keep in particular BPF tracing programs attached even when the applicaion owning them exits, from Andrii Nakryiko. 6) New bpf_get_current_pid_tgid() helper for tracing to perform PID filtering and which returns the PID as seen by the init namespace, from Carlos Neira. 7) Refactor of RISC-V JIT code to move out common pieces and addition of a new RV32G BPF JIT compiler, from Luke Nelson. 8) Add gso_size context member to __sk_buff in order to be able to know whether a given skb is GSO or not, from Willem de Bruijn. 9) Add a new bpf_xdp_output() helper which reuses XDP's existing perf RB output implementation but can be called from tracepoint programs, from Eelco Chaudron. ==================== Signed-off-by: David S. Miller <[email protected]>
2020-03-13selftests/bpf: Add vmlinux.h selftest exercising tracing of syscallsAndrii Nakryiko3-1/+133
Add vmlinux.h generation to selftest/bpf's Makefile. Use it from newly added test_vmlinux to trace nanosleep syscall using 5 different types of programs: - tracepoint; - raw tracepoint; - raw tracepoint w/ direct memory reads (tp_btf); - kprobe; - fentry. These programs are realistic variants of real-life tracing programs, excercising vmlinux.h's usage with tracing applications. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13libbpf: Provide CO-RE variants of PT_REGS macrosAndrii Nakryiko1-0/+103
Syscall raw tracepoints have struct pt_regs pointer as tracepoint's first argument. After that, reading any of pt_regs fields requires bpf_probe_read(), even for tp_btf programs. Due to that, PT_REGS_PARMx macros are not usable as is. This patch adds CO-RE variants of those macros that use BPF_CORE_READ() to read necessary fields. This provides relocatable architecture-agnostic pt_regs field accesses. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13libbpf: Ignore incompatible types with matching name during CO-RE relocationAndrii Nakryiko1-0/+4
When finding target type candidates, ignore forward declarations, functions, and other named types of incompatible kind. Not doing this can cause false errors. See [0] for one such case (due to struct pt_regs forward declaration). [0] https://github.com/iovisor/bcc/pull/2806#issuecomment-598543645 Fixes: ddc7c3042614 ("libbpf: implement BPF CO-RE offset relocation algorithm") Reported-by: Wenbo Zhang <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13selftests/bpf: Ensure consistent test failure outputAndrii Nakryiko2-9/+9
printf() doesn't seem to honor using overwritten stdout/stderr (as part of stdio hijacking), so ensure all "standard" invocations of printf() do fprintf(stdout, ...) instead. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13selftests/bpf: Fix spurious failures in accept due to EAGAINJakub Sitnicki1-19/+58
Andrii Nakryiko reports that sockmap_listen test suite is frequently failing due to accept() calls erroring out with EAGAIN: ./test_progs:connect_accept_thread:733: accept: Resource temporarily unavailable connect_accept_thread:FAIL:733 This is because we are using a non-blocking listening TCP socket to accept() connections without polling on the socket. While at first switching to blocking mode seems like the right thing to do, this could lead to test process blocking indefinitely in face of a network issue, like loopback interface being down, as Andrii pointed out. Hence, stick to non-blocking mode for TCP listening sockets but with polling for incoming connection for a limited time before giving up. Apply this approach to all socket I/O calls in the test suite that we expect to block indefinitely, that is accept() for TCP and recv() for UDP. Fixes: 44d28be2b8d4 ("selftests/bpf: Tests for sockmap/sockhash holding listening sockets") Reported-by: Andrii Nakryiko <[email protected]> Signed-off-by: Jakub Sitnicki <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13Merge tag 'pm-5.6-rc6' of ↵Linus Torvalds4-3/+5
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix cpupower utility build failures with -fno-common enabled (Mike Gilbert)" * tag 'pm-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpupower: avoid multiple definition with gcc -fno-common
2020-03-13tools/bpf: Move linux/types.h for selftests and bpftoolTobias Klauser3-4/+4
Commit fe4eb069edb7 ("bpftool: Use linux/types.h from source tree for profiler build") added a build dependency on tools/testing/selftests/bpf to tools/bpf/bpftool. This is suboptimal with respect to a possible stand-alone build of bpftool. Fix this by moving tools/testing/selftests/bpf/include/uapi/linux/types.h to tools/include/uapi/linux/types.h. This requires an adjustment in the include search path order for the tests in tools/testing/selftests/bpf so that tools/include/linux/types.h is selected when building host binaries and tools/include/uapi/linux/types.h is selected when building bpf binaries. Verified by compiling bpftool and the bpf selftests on x86_64 with this change. Fixes: fe4eb069edb7 ("bpftool: Use linux/types.h from source tree for profiler build") Suggested-by: Andrii Nakryiko <[email protected]> Signed-off-by: Tobias Klauser <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13selftests/bpf: Fix usleep() implementationAndrii Nakryiko1-1/+10
nanosleep syscall expects pointer to struct timespec, not nanoseconds directly. Current implementation fulfills its purpose of invoking nanosleep syscall, but doesn't really provide sleeping capabilities, which can cause flakiness for tests relying on usleep() to wait for something. Fixes: ec12a57b822c ("selftests/bpf: Guarantee that useep() calls nanosleep() syscall") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2020-03-13selftests/bpf: Make tcp_rtt test more robust to failuresAndrii Nakryiko1-12/+20
Switch to non-blocking accept and wait for server thread to exit before proceeding. I noticed that sometimes tcp_rtt server thread failure would "spill over" into other tests (that would run after tcp_rtt), probably just because server thread exits much later and tcp_rtt doesn't wait for it. v1->v2: - add usleep() while waiting on initial non-blocking accept() (Stanislav); Fixes: 8a03222f508b ("selftests/bpf: test_progs: fix client/server race in tcp_rtt") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Reviewed-by: Stanislav Fomichev <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2020-03-13selftests/bpf: Guarantee that useep() calls nanosleep() syscallAndrii Nakryiko1-0/+9
Some implementations of C runtime library won't call nanosleep() syscall from usleep(). But a bunch of kprobe/tracepoint selftests rely on nanosleep being called to trigger them. To make this more reliable, "override" usleep implementation and call nanosleep explicitly. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Cc: Julia Kartseva <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2020-03-13tools: bpftool: Restore message on failure to guess program typeQuentin Monnet4-11/+35
In commit 4a3d6c6a6e4d ("libbpf: Reduce log level for custom section names"), log level for messages for libbpf_attach_type_by_name() and libbpf_prog_type_by_name() was downgraded from "info" to "debug". The latter function, in particular, is used by bpftool when attempting to load programs, and this change caused bpftool to exit with no hint or error message when it fails to detect the type of the program to load (unless "-d" option was provided). To help users understand why bpftool fails to load the program, let's do a second run of the function with log level in "debug" mode in case of failure. Before: # bpftool prog load sample_ret0.o /sys/fs/bpf/sample_ret0 # echo $? 255 Or really verbose with -d flag: # bpftool -d prog load sample_ret0.o /sys/fs/bpf/sample_ret0 libbpf: loading sample_ret0.o libbpf: section(1) .strtab, size 134, link 0, flags 0, type=3 libbpf: skip section(1) .strtab libbpf: section(2) .text, size 16, link 0, flags 6, type=1 libbpf: found program .text libbpf: section(3) .debug_abbrev, size 55, link 0, flags 0, type=1 libbpf: skip section(3) .debug_abbrev libbpf: section(4) .debug_info, size 75, link 0, flags 0, type=1 libbpf: skip section(4) .debug_info libbpf: section(5) .rel.debug_info, size 32, link 14, flags 0, type=9 libbpf: skip relo .rel.debug_info(5) for section(4) libbpf: section(6) .debug_str, size 150, link 0, flags 30, type=1 libbpf: skip section(6) .debug_str libbpf: section(7) .BTF, size 155, link 0, flags 0, type=1 libbpf: section(8) .BTF.ext, size 80, link 0, flags 0, type=1 libbpf: section(9) .rel.BTF.ext, size 32, link 14, flags 0, type=9 libbpf: skip relo .rel.BTF.ext(9) for section(8) libbpf: section(10) .debug_frame, size 40, link 0, flags 0, type=1 libbpf: skip section(10) .debug_frame libbpf: section(11) .rel.debug_frame, size 16, link 14, flags 0, type=9 libbpf: skip relo .rel.debug_frame(11) for section(10) libbpf: section(12) .debug_line, size 74, link 0, flags 0, type=1 libbpf: skip section(12) .debug_line libbpf: section(13) .rel.debug_line, size 16, link 14, flags 0, type=9 libbpf: skip relo .rel.debug_line(13) for section(12) libbpf: section(14) .symtab, size 96, link 1, flags 0, type=2 libbpf: looking for externs among 4 symbols... libbpf: collected 0 externs total libbpf: failed to guess program type from ELF section '.text' libbpf: supported section(type) names are: socket sk_reuseport kprobe/ [...] After: # bpftool prog load sample_ret0.o /sys/fs/bpf/sample_ret0 libbpf: failed to guess program type from ELF section '.text' libbpf: supported section(type) names are: socket sk_reuseport kprobe/ [...] Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2020-03-13selftests: android: Fix custom install from skipping test progsShuah Khan1-1/+1
Update custom install rule to install all generated test programs. This fixes android/ion tests to be installed correctly. Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests: android: ion: Fix ionmap_test compile errorShuah Khan1-1/+1
ionmap_test compile rule is missing ipcsocket.c dependency. Add it to fix the following compile errors: ..android/ion/ionutils.c:221: undefined reference to `sendtosocket' ..android/ion/ionutils.c:243: undefined reference to `receivefromsocket' Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests: Fix kselftest O=objdir build from cluttering top level objdirShuah Khan1-2/+2
make kselftest-all O=objdir builds create generated objects in objdir. This clutters the top level directory with kselftest objects. Fix it to create sub-directory under objdir for kselftest objects. Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests/seccomp: Adjust test fixture countsKees Cook1-5/+5
The seccomp selftest reported the wrong test counts since it was using slightly the wrong API for defining text fixtures. Adjust the API usage. Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests/ftrace: Fix typo in trigger-multihist.tcMasanari Iida1-1/+1
This patch fix a spelling typo in trigger-multihist.tc Signed-off-by: Masanari Iida <[email protected]> Acked-by: Steven Rostedt (VMware) <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests/timens: Remove duplicated include <time.h>YueHaibing4-4/+0
Remove duplicated include. Signed-off-by: YueHaibing <[email protected]> Reviewed-by: Dmitry Safonov <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-03-13selftests/resctrl: fix spelling mistake "Errror" -> "Error"Colin Ian King1-2/+2
There are two spelling mistakes in error messages. Fix these. Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-03-13perf test: Print if shell directory isn't presentIan Rogers1-1/+4
If the shell test directory isn't present the exit code will be 255 but with no error messages printed. Add an error message. Signed-off-by: Ian Rogers <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Leo Yan <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2020-03-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller4-0/+123
Alexei Starovoitov says: ==================== pull-request: bpf 2020-03-12 The following pull-request contains BPF updates for your *net* tree. We've added 12 non-merge commits during the last 8 day(s) which contain a total of 12 files changed, 161 insertions(+), 15 deletions(-). The main changes are: 1) Andrii fixed two bugs in cgroup-bpf. 2) John fixed sockmap. 3) Luke fixed x32 jit. 4) Martin fixed two issues in struct_ops. 5) Yonghong fixed bpf_send_signal. 6) Yoshiki fixed BTF enum. ==================== Signed-off-by: David S. Miller <[email protected]>
2020-03-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller31-236/+305
Minor overlapping changes, nothing serious. Signed-off-by: David S. Miller <[email protected]>
2020-03-12bpf: Add bpf_xdp_output() helperEelco Chaudron3-1/+102
Introduce new helper that reuses existing xdp perf_event output implementation, but can be called from raw_tracepoint programs that receive 'struct xdp_buff *' as a tracepoint argument. Signed-off-by: Eelco Chaudron <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: John Fastabend <[email protected]> Acked-by: Toke Høiland-Jørgensen <[email protected]> Link: https://lore.kernel.org/bpf/158348514556.2239.11050972434793741444.stgit@xdp-tutorial
2020-03-12tools/testing/selftests/bpf: Add self-tests for new helper ↵Carlos Neira5-1/+287
bpf_get_ns_current_pid_tgid. Self tests added for new helper bpf_get_ns_current_pid_tgid Signed-off-by: Carlos Neira <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-12bpf: Added new helper bpf_get_ns_current_pid_tgidCarlos Neira1-1/+19
New bpf helper bpf_get_ns_current_pid_tgid, This helper will return pid and tgid from current task which namespace matches dev_t and inode number provided, this will allows us to instrument a process inside a container. Signed-off-by: Carlos Neira <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13tools: bpftool: Fix minor bash completion mistakesQuentin Monnet1-8/+21
Minor fixes for bash completion: addition of program name completion for two subcommands, and correction for program test-runs and map pinning. The completion for the following commands is fixed or improved: # bpftool prog run [TAB] # bpftool prog pin [TAB] # bpftool map pin [TAB] # bpftool net attach xdp name [TAB] Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13tools: bpftool: Allow all prog/map handles for pinning objectsQuentin Monnet4-32/+7
Documentation and interactive help for bpftool have always explained that the regular handles for programs (id|name|tag|pinned) and maps (id|name|pinned) can be passed to the utility when attempting to pin objects (bpftool prog pin PROG / bpftool map pin MAP). THIS IS A LIE!! The tool actually accepts only ids, as the parsing is done in do_pin_any() in common.c instead of reusing the parsing functions that have long been generic for program and map handles. Instead of fixing the doc, fix the code. It is trivial to reuse the generic parsing, and to simplify do_pin_any() in the process. Do not accept to pin multiple objects at the same time with prog_parse_fds() or map_parse_fds() (this would require a more complex syntax for passing multiple sysfs paths and validating that they correspond to the number of e.g. programs we find for a given name or tag). Signed-off-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds2-3/+32
Pull networking fixes from David Miller: "It looks like a decent sized set of fixes, but a lot of these are one liner off-by-one and similar type changes: 1) Fix netlink header pointer to calcular bad attribute offset reported to user. From Pablo Neira Ayuso. 2) Don't double clear PHY interrupts when ->did_interrupt is set, from Heiner Kallweit. 3) Add missing validation of various (devlink, nl802154, fib, etc.) attributes, from Jakub Kicinski. 4) Missing *pos increments in various netfilter seq_next ops, from Vasily Averin. 5) Missing break in of_mdiobus_register() loop, from Dajun Jin. 6) Don't double bump tx_dropped in veth driver, from Jiang Lidong. 7) Work around FMAN erratum A050385, from Madalin Bucur. 8) Make sure ARP header is pulled early enough in bonding driver, from Eric Dumazet. 9) Do a cond_resched() during multicast processing of ipvlan and macvlan, from Mahesh Bandewar. 10) Don't attach cgroups to unrelated sockets when in interrupt context, from Shakeel Butt. 11) Fix tpacket ring state management when encountering unknown GSO types. From Willem de Bruijn. 12) Fix MDIO bus PHY resume by checking mdio_bus_phy_may_suspend() only in the suspend context. From Heiner Kallweit" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (112 commits) net: systemport: fix index check to avoid an array out of bounds access tc-testing: add ETS scheduler to tdc build configuration net: phy: fix MDIO bus PM PHY resuming net: hns3: clear port base VLAN when unload PF net: hns3: fix RMW issue for VLAN filter switch net: hns3: fix VF VLAN table entries inconsistent issue net: hns3: fix "tc qdisc del" failed issue taprio: Fix sending packets without dequeueing them net: mvmdio: avoid error message for optional IRQ net: dsa: mv88e6xxx: Add missing mask of ATU occupancy register net: memcg: fix lockdep splat in inet_csk_accept() s390/qeth: implement smarter resizing of the RX buffer pool s390/qeth: refactor buffer pool code s390/qeth: use page pointers to manage RX buffer pool seg6: fix SRv6 L2 tunnels to use IANA-assigned protocol number net: dsa: Don't instantiate phylink for CPU/DSA ports unless needed net/packet: tpacket_rcv: do not increment ring index on drop sxgbe: Fix off by one in samsung driver strncpy size arg net: caif: Add lockdep expression to RCU traversal primitive MAINTAINERS: remove Sathya Perla as Emulex NIC maintainer ...
2020-03-13libbpf: Split BTF presence checks into libbpf- and kernel-specific partsAndrii Nakryiko1-5/+12
Needs for application BTF being present differs between user-space libbpf needs and kernel needs. Currently, BTF is mandatory only in kernel only when BPF application is using STRUCT_OPS. While libbpf itself relies more heavily on presense of BTF: - for BTF-defined maps; - for Kconfig externs; - for STRUCT_OPS as well. Thus, checks for presence and validness of bpf_object's BPF needs to be performed separately, which is patch does. Fixes: 5327644614a1 ("libbpf: Relax check whether BTF is mandatory") Reported-by: Michal Rostecki <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Cc: Quentin Monnet <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13bpftool: Add _bpftool and profiler.skel.h to .gitignoreSong Liu1-0/+2
These files are generated, so ignore them. Signed-off-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13bpftool: Skeleton should depend on libbpfSong Liu1-2/+3
Add the dependency to libbpf, to fix build errors like: In file included from skeleton/profiler.bpf.c:5: .../bpf_helpers.h:5:10: fatal error: 'bpf_helper_defs.h' file not found #include "bpf_helper_defs.h" ^~~~~~~~~~~~~~~~~~~ 1 error generated. make: *** [skeleton/profiler.bpf.o] Error 1 make: *** Waiting for unfinished jobs.... Fixes: 47c09d6a9f67 ("bpftool: Introduce "prog profile" command") Suggested-by: Quentin Monnet <[email protected]> Signed-off-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-13bpftool: Only build bpftool-prog-profile if supported by clangSong Liu4-5/+24
bpftool-prog-profile requires clang to generate BTF for global variables. When compared with older clang, skip this command. This is achieved by adding a new feature, clang-bpf-global-var, to tools/build/feature. Signed-off-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-12tc-testing: add ETS scheduler to tdc build configurationDavide Caratti1-0/+1
add CONFIG_NET_SCH_ETS to 'config', otherwise test suites using this file to perform a full tdc run will encounter the following warning: ok 645 e90e - Add ETS qdisc using bands # skipped - "-----> teardown stage" did not complete successfully Fixes: 82c664b69c8b ("selftests: qdiscs: Add test coverage for ETS Qdisc") Reported-by: Jamal Hadi Salim <[email protected]> Signed-off-by: Davide Caratti <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-12xarray: Fix early termination of xas_for_each_markedMatthew Wilcox (Oracle)4-2/+91
xas_for_each_marked() is using entry == NULL as a termination condition of the iteration. When xas_for_each_marked() is used protected only by RCU, this can however race with xas_store(xas, NULL) in the following way: TASK1 TASK2 page_cache_delete() find_get_pages_range_tag() xas_for_each_marked() xas_find_marked() off = xas_find_chunk() xas_store(&xas, NULL) xas_init_marks(&xas); ... rcu_assign_pointer(*slot, NULL); entry = xa_entry(off); And thus xas_for_each_marked() terminates prematurely possibly leading to missed entries in the iteration (translating to missing writeback of some pages or a similar problem). If we find a NULL entry that has been marked, skip it (unless we're trying to allocate an entry). Reported-by: Jan Kara <[email protected]> CC: [email protected] Fixes: ef8e5717db01 ("page cache: Convert delete_batch to XArray") Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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