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2019-08-06tests: add pidfd poll testsSuren Baghdasaryan3-1/+119
This adds testing for polling on pidfd of a process being killed. Test runs 10000 iterations by default to stress test pidfd polling functionality. It accepts an optional command-line parameter to override the number or iterations to run. Specifically, it tests for: - pidfd_open on a child process succeeds - pidfd_send_signal on a child process succeeds - polling on pidfd succeeds and returns exactly one event - returned event is POLLIN - event is received within 3 secs of the process being killed 10000 iterations was chosen because of the race condition being tested which is not consistently reproducible but usually is revealed after less than 2000 iterations. Reveals race fixed by commit b191d6491be6 ("pidfd: fix a poll race when setting exit_state") Signed-off-by: Suren Baghdasaryan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Christian Brauner <[email protected]>
2019-08-06tests: move common definitions and functions into pidfd.hSuren Baghdasaryan2-5/+5
Move definitions and functions used across different pidfd tests into pidfd.h header. Signed-off-by: Suren Baghdasaryan <[email protected]> Reviewed-by: Christian Brauner <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Christian Brauner <[email protected]>
2019-08-06pidfd: add pidfd_wait testsChristian Brauner5-15/+298
Add tests for pidfd_wait() and CLONE_WAIT_PID: - test that waitid(P_PIDFD) fails on /proc/<pid> - test that waitid(P_PIDFD) fails on /dev/null - test that waitid(P_PIDFD) can wait on a pidfd - test that waitid(P_PIDFD) can wait on a pidfd and return siginfo_t - test that waitid(P_PIDFD) works with WEXITED - test that waitid(P_PIDFD) works with WSTOPPED - test that waitid(P_PIDFD) works with WUNTRACED - test that waitid(P_PIDFD) works with WCONTINUED - test that waitid(P_PIDFD) works with WNOWAIT - test that waitid(P_PIDFD)works with WNOHANG Signed-off-by: Christian Brauner <[email protected]> Reviewed-by: Kees Cook <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Joel Fernandes (Google) <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: David Howells <[email protected]> Cc: Jann Horn <[email protected]> Cc: Andy Lutomirsky <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Aleksa Sarai <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Al Viro <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2019-08-06selftests, arm64: add a selftest for passing tagged pointers to kernelAndrey Konovalov4-0/+53
This patch is a part of a series that extends kernel ABI to allow to pass tagged user pointers (with the top byte set to something else other than 0x00) as syscall arguments. This patch adds a simple test, that calls the uname syscall with a tagged user pointer as an argument. Without the kernel accepting tagged user pointers the test fails with EFAULT. Reviewed-by: Catalin Marinas <[email protected]> Acked-by: Kees Cook <[email protected]> Signed-off-by: Andrey Konovalov <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2019-08-06selftests/bpf: add loop test 5Alexei Starovoitov2-0/+33
Add a test with multiple exit conditions. It's not an infinite loop only when the verifier can properly track all math on variable 'i' through all possible ways of executing this loop. barrier()s are needed to disable llvm optimization that combines multiple branches into fewer branches. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Yonghong Song <[email protected]>
2019-08-06selftests/bpf: add loop test 4Alexei Starovoitov2-0/+19
Add a test that returns a 'random' number between [0, 2^20) If state pruning is not working correctly for loop body the number of processed insns will be 2^20 * num_of_insns_in_loop_body and the program will be rejected. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Acked-by: Yonghong Song <[email protected]>
2019-08-05selftests/tls: add a litmus test for the socket reuse through shutdownJakub Kicinski1-0/+24
Make sure that shutdown never works, and at the same time document how I tested to came to the conclusion that currently reuse is not possible. Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-05Merge tag 'linux-kselftest-5.3-rc4' of ↵Linus Torvalds2-6/+35
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: "A fix to the Kselftest framework to save and restore errno and a fix to livepatch to push and pop dynamic debug config" * tag 'linux-kselftest-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/livepatch: push and pop dynamic debug config kselftest: save-and-restore errno to allow for %m formatting
2019-08-05selftests/bpf: reduce time to execute test_xdp_vlan.shJesper Dangaard Brouer1-5/+5
Given the increasing number of BPF selftests, it makes sense to reduce the time to execute these tests. The ping parameters are adjusted to reduce the time from measures 9 sec to approx 2.8 sec. Signed-off-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-05selftests/bpf: add wrapper scripts for test_xdp_vlan.shJesper Dangaard Brouer4-2/+24
In-order to test both native-XDP (xdpdrv) and generic-XDP (xdpgeneric) create two wrapper test scripts, that start the test_xdp_vlan.sh script with these modes. Signed-off-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-05bpf: fix XDP vlan selftests test_xdp_vlan.shJesper Dangaard Brouer1-6/+36
Change BPF selftest test_xdp_vlan.sh to (default) use generic XDP. This selftest was created together with a fix for generic XDP, in commit 297249569932 ("net: fix generic XDP to handle if eth header was mangled"). And was suppose to catch if generic XDP was broken again. The tests are using veth and assumed that veth driver didn't support native driver XDP, thus it used the (ip link set) 'xdp' attach that fell back to generic-XDP. But veth gained native-XDP support in 948d4f214fde ("veth: Add driver XDP"), which caused this test script to use native-XDP. Fixes: 948d4f214fde ("veth: Add driver XDP") Fixes: 97396ff0bc2d ("selftests/bpf: add XDP selftests for modifying and popping VLAN headers") Signed-off-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-05][next] selftests: nettest: fix spelling mistake: "potocol" -> "protocol"Colin Ian King1-1/+1
There is a spelling mistake in an error messgae. Fix it. Signed-off-by: Colin Ian King <[email protected]> Acked-by: Shuah Khan <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-05selftests: netfilter: extend flowtable test script for ipsecFlorian Westphal1-0/+48
'flow offload' expression should not offload flows that will be subject to ipsec, but it does. This results in a connectivity blackhole for the affected flows -- first packets will go through (offload happens after established state is reached), but all remaining ones bypass ipsec encryption and are thus discarded by the peer. This can be worked around by adding "rt ipsec exists accept" before the 'flow offload' rule matches. This test case will fail, support for such flows is added in next patch. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2019-08-03Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds20-35/+352
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf tooling fixes from Thomas Gleixner: "A set of updates for perf tools and documentation: perf header: - Prevent a division by zero - Deal with an uninitialized warning proper libbpf: - Fix the missiong __WORDSIZE definition for musl & al UAPI headers: - Synchronize kernel headers Documentation: - Fix the memory units for perf.data size" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: libbpf: fix missing __WORDSIZE definition perf tools: Fix perf.data documentation units for memory size perf header: Fix use of unitialized value warning perf header: Fix divide by zero error if f_header.attr_size==0 tools headers UAPI: Sync if_link.h with the kernel tools headers UAPI: Sync sched.h with the kernel tools headers UAPI: Sync usbdevice_fs.h with the kernels to get new ioctl tools perf beauty: Fix usbdevfs_ioctl table generator to handle _IOC() tools headers UAPI: Update tools's copy of drm.h headers tools headers UAPI: Update tools's copy of mman.h headers tools headers UAPI: Update tools's copy of kvm.h headers tools include UAPI: Sync x86's syscalls_64.tbl and generic unistd.h to pick up clone3 and pidfd_open
2019-08-03selftests: Add use case section to fcnal-testDavid Ahern1-0/+124
Add use case section to fcnal-test. Initial test is VRF based with a bridge and vlans. The commands stem from bug reports fixed by: a173f066c7cf ("netfilter: bridge: Don't sabotage nf_hook calls from an l3mdev") cd6428988bf4 ("netfilter: bridge: Don't sabotage nf_hook calls for an l3mdev slave") Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 netfilter tests to fcnal-testDavid Ahern1-1/+64
Add IPv6 netfilter tests to send tcp reset or icmp unreachable for a port. Initial tests are VRF only. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 netfilter tests to fcnal-testDavid Ahern1-1/+68
Add netfilter tests to send tcp reset or icmp unreachable for a port. Initial tests are VRF only. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 runtime tests to fcnal-testDavid Ahern1-1/+187
Add IPv6 runtime tests where passive (no traffic flowing) and active (with traffic) sockets are expected to be reset on device deletes. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 runtime tests to fcnal-testDavid Ahern1-1/+184
Add runtime tests where passive (no traffic flowing) and active (with traffic) sockets are expected to be reset on device deletes. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 address bind tests to fcnal-testDavid Ahern1-1/+109
Add IPv6 address bind tests to fcnal-test.sh. Verifies socket binding to local addresses for raw, tcp and udp including device and VRF cases. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 address bind tests to fcnal-testDavid Ahern1-1/+110
Add address bind tests to fcnal-test.sh. Verifies socket binding to local addresses for raw, tcp and udp including device and VRF cases. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 udp tests to fcnal-testDavid Ahern1-1/+491
Add IPv6 udp tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures for both clients and servers. Includes permutations with net.ipv4.udp_l3mdev_accept set to 0 and 1. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 udp tests to fcnal-testDavid Ahern1-1/+380
Add udp tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures for both clients and servers. Includes permutations with net.ipv4.udp_l3mdev_accept set to 0 and 1. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 tcp tests to fcnal-testDavid Ahern1-1/+369
Add IPv6 tcp tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures for both clients and servers. Includes permutations with net.ipv4.tcp_l3mdev_accept set to 0 and 1. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 tcp tests to fcnal-testDavid Ahern1-1/+314
Add tcp tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures for both clients and servers. Includes permutations with net.ipv4.tcp_l3mdev_accept set to 0 and 1. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv6 ping tests to fcnal-testDavid Ahern1-1/+283
Add IPv6 ping tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures. Setup includes unreachable routes and fib rules blocking traffic. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add ipv4 ping tests to fcnal-testDavid Ahern1-1/+267
Add ping tests to fcnal-test.sh. Covers the permutations of directly connected addresses, routed destinations, VRF and non-VRF, and expected failures. Setup includes unreachable routes and fib rules blocking traffic. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Setup for functional tests for fib and socket lookupsDavid Ahern2-1/+521
Initial commit for functional test suite for fib and socket lookups. This commit contains the namespace setup, networking config, test options and other basic infrastructure. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03selftests: Add nettestDavid Ahern2-1/+1757
Add nettest - a simple program with an implementation for various networking APIs. nettest is used for tcp, udp and raw functional tests for both IPv4 and IPv6. Point of this command versus existing utilities: - controlled implementation of the APIs and the order in which they are called, - ability to verify ingress device, local and remote addresses, - timeout for controlled test length, - ability to discriminate a timeout from a system call failure, and - simplicity with test scripts. The command returns: 0 on success, 1 for any system call failure, and 2 on timeout. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-08-03cgroup: kselftest: relax fs_spec checksChris Down1-2/+1
On my laptop most memcg kselftests were being skipped because it claimed cgroup v2 hierarchy wasn't mounted, but this isn't correct. Instead, it seems current systemd HEAD mounts it with the name "cgroup2" instead of "cgroup": % grep cgroup /proc/mounts cgroup2 /sys/fs/cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate 0 0 I can't think of a reason to need to check fs_spec explicitly since it's arbitrary, so we can just rely on fs_vfstype. After these changes, `make TARGETS=cgroup kselftest` actually runs the cgroup v2 tests in more cases. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Chris Down <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Roman Gushchin <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2019-08-02KVM: selftests: Enable dirty_log_test on s390xThomas Huth2-7/+53
To run the dirty_log_test on s390x, we have to make sure that we access the dirty log bitmap with little endian byte ordering and we have to properly align the memslot of the guest. Also all dirty bits of a segment are set once on s390x when one of the pages of a segment are written to for the first time, so we have to make sure that we touch all pages during the first iteration to keep the test in sync here. DEFAULT_GUEST_TEST_MEM needs an adjustment, too. On some s390x distributions, the ELF binary is linked to address 0x80000000, so we have to avoid that our test region overlaps into this area. 0xc0000000 seems to be a good alternative that should work on x86 and aarch64, too. Acked-by: Paolo Bonzini <[email protected]> Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Thomas Huth <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Christian Borntraeger <[email protected]>
2019-08-02KVM: selftests: Implement ucall() for s390xThomas Huth3-3/+61
On s390x, we can neither exit via PIO nor MMIO, but have to use an instruction like DIAGNOSE. Now that ucall() is implemented, we can use it in the sync_reg_test on s390x, too. Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Thomas Huth <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Christian Borntraeger <[email protected]>
2019-08-02KVM: selftests: Split ucall.c into architecture specific filesThomas Huth6-168/+173
The way we exit from a guest to userspace is very specific to the architecture: On x86, we use PIO, on aarch64 we are using MMIO and on s390x we're going to use an instruction instead. The possibility to select a type via the ucall_type_t enum is currently also completely unused, so the code in ucall.c currently looks more complex than required. Let's split this up into architecture specific ucall.c files instead, so we can get rid of the #ifdefs and the unnecessary ucall_type_t handling. Reviewed-by: Andrew Jones <[email protected]> Signed-off-by: Thomas Huth <[email protected]> Acked-by: Paolo Bonzini <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Christian Borntraeger <[email protected]>
2019-08-01rcutorture: Test TREE03 with the threadirqs kernel boot parameterPaul E. McKenney1-0/+1
Since commit 05f415715ce45 ("rcu: Speed up expedited GPs when interrupting RCU reader") in v5.0 and through v5.1, booting with the threadirqs kernel boot parameter caused self-deadlocks, which can be reproduced using the following command on an 8-CPU system: tools/testing/selftests/rcutorture/bin/kvm.sh --duration 5 --configs "TREE03" --bootargs "threadirqs" This commit therefore adds the threadirqs kernel boot parameter to the TREE03 rcutorture scenario in order to more quickly detect future similar bugs. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Paul E. McKenney <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Joel Fernandes <[email protected]>
2019-08-01torture: Expand last_ts variable in kvm-test-1-run.shPaul E. McKenney1-1/+1
The kvm-test-1-run.sh script says 'test -z "last_ts"' which always evaluates to true (AKA zero) regardless of the value of the last_ts shell variable. This commit therefore inserts the needed dollar sign ("$"). Signed-off-by: Paul E. McKenney <[email protected]>
2019-08-01selftests/bpf: extend sockopt_sk selftest with TCP_CONGESTION use caseStanislav Fomichev2-0/+47
Ignore SOL_TCP:TCP_CONGESTION in getsockopt and always override SOL_TCP:TCP_CONGESTION with "cubic" in setsockopt hook. Call setsockopt(SOL_TCP, TCP_CONGESTION) with short optval ("nv") to make sure BPF program has enough buffer space to replace it with "cubic". Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-08-01selftests/bpf: tests for jmp to 1st insnAlexei Starovoitov1-0/+28
Add 2 tests that check JIT code generation to jumps to 1st insn. 1st test is similar to syzbot reproducer. The backwards branch is never taken at runtime. 2nd test has branch to 1st insn that executes. The test is written as two bpf functions, since it's not possible to construct valid single bpf program that jumps to 1st insn. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Song Liu <[email protected]>
2019-08-01libbpf: set BTF FD for prog only when there is supported .BTF.ext dataAndrii Nakryiko1-1/+5
5d01ab7bac46 ("libbpf: fix erroneous multi-closing of BTF FD") introduced backwards-compatibility issue, manifesting itself as -E2BIG error returned on program load due to unknown non-zero btf_fd attribute value for BPF_PROG_LOAD sys_bpf() sub-command. This patch fixes bug by ensuring that we only ever associate BTF FD with program if there is a BTF.ext data that was successfully loaded into kernel, which automatically means kernel supports func_info/line_info and associated BTF FD for progs (checked and ensured also by BTF sanitization code). Fixes: 5d01ab7bac46 ("libbpf: fix erroneous multi-closing of BTF FD") Reported-by: Andrey Ignatov <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-08-01tools/memory-model: Make scripts be executablePaul E. McKenney8-0/+0
This commit simplifies life a bit by making all of the scripts in tools/memory-model/scripts be executable. Signed-off-by: Paul E. McKenney <[email protected]>
2019-08-01perf bench numa: Fix cpu0 bindingJiri Olsa1-2/+4
Michael reported an issue with perf bench numa failing with binding to cpu0 with '-0' option. # perf bench numa mem -p 3 -t 1 -P 512 -s 100 -zZcm0 --thp 1 -M 1 -ddd # Running 'numa/mem' benchmark: # Running main, "perf bench numa numa-mem -p 3 -t 1 -P 512 -s 100 -zZcm0 --thp 1 -M 1 -ddd" binding to node 0, mask: 0000000000000001 => -1 perf: bench/numa.c:356: bind_to_memnode: Assertion `!(ret)' failed. Aborted (core dumped) This happens when the cpu0 is not part of node0, which is the benchmark assumption and we can see that's not the case for some powerpc servers. Using correct node for cpu0 binding. Reported-by: Michael Petlan <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Satheesh Rajendran <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2019-07-31libbpf : make libbpf_num_possible_cpus function thread safeTakshak Chahande1-7/+11
Having static variable `cpus` in libbpf_num_possible_cpus function without guarding it with mutex makes this function thread-unsafe. If multiple threads accessing this function, in the current form; it leads to incrementing the static variable value `cpus` in the multiple of total available CPUs. Used local stack variable to calculate the number of possible CPUs and then updated the static variable using WRITE_ONCE(). Changes since v1: * added stack variable to calculate cpus * serialized static variable update using WRITE_ONCE() * fixed Fixes tag Fixes: 6446b3155521 ("bpf: add a new API libbpf_num_possible_cpus()") Signed-off-by: Takshak Chahande <[email protected]> Acked-by: Andrey Ignatov <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-07-31tc-testing: Clarify the use of tdc's -d optionLucas Bates2-5/+11
The -d command line argument to tdc requires the name of a physical device on the system where the tests will be run. If -d has not been used, tdc will skip tests that require a physical device. This patch is intended to better document what the -d option does and how it is used. Signed-off-by: Lucas Bates <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-31selftests/tls: fix TLS tests with CONFIG_TLS=nJakub Kicinski1-9/+14
Build bot reports some recent TLS tests are failing with CONFIG_TLS=n. Correct the expected return code and skip TLS installation if not supported. Tested with CONFIG_TLS=n and CONFIG_TLS=m. Reported-by: kernel test robot <[email protected]> Fixes: cf32526c8842 ("selftests/tls: add a test for ULP but no keys") Fixes: 65d41fb317c6 ("selftests/tls: add a bidirectional test") Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-31selftests: mlxsw: Add a test for leftover DSCP rulePetr Machata1-0/+19
Commit dedfde2fe1c4 ("mlxsw: spectrum_dcb: Configure DSCP map as the last rule is removed") fixed a problem in mlxsw where last DSCP rule to be removed remained in effect when DSCP rewrite was applied. Add a selftest that covers this problem. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-31selftests: mlxsw: Fix local variable declarations in DSCP testsPetr Machata2-4/+7
These two tests have some problems in the global scope pollution and on contrary, contain unnecessary local declarations. Fix them. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-30tools: bpftool: add support for reporting the effective cgroup progsJakub Kicinski3-38/+76
Takshak said in the original submission: With different bpf attach_flags available to attach bpf programs specially with BPF_F_ALLOW_OVERRIDE and BPF_F_ALLOW_MULTI, the list of effective bpf-programs available to any sub-cgroups really needs to be available for easy debugging. Using BPF_F_QUERY_EFFECTIVE flag, one can get the list of not only attached bpf-programs to a cgroup but also the inherited ones from parent cgroup. So a new option is introduced to use BPF_F_QUERY_EFFECTIVE query flag here to list all the effective bpf-programs available for execution at a specified cgroup. Reused modified test program test_cgroup_attach from tools/testing/selftests/bpf: # ./test_cgroup_attach With old bpftool: # bpftool cgroup show /sys/fs/cgroup/cgroup-test-work-dir/cg1/ ID AttachType AttachFlags Name 271 egress multi pkt_cntr_1 272 egress multi pkt_cntr_2 Attached new program pkt_cntr_4 in cg2 gives following: # bpftool cgroup show /sys/fs/cgroup/cgroup-test-work-dir/cg1/cg2 ID AttachType AttachFlags Name 273 egress override pkt_cntr_4 And with new "effective" option it shows all effective programs for cg2: # bpftool cgroup show /sys/fs/cgroup/cgroup-test-work-dir/cg1/cg2 effective ID AttachType AttachFlags Name 273 egress override pkt_cntr_4 271 egress override pkt_cntr_1 272 egress override pkt_cntr_2 Compared to original submission use a local flag instead of global option. We need to clear query_flags on every command, in case batch mode wants to use varying settings. v2: (Takshak) - forbid duplicated flags; - fix cgroup path freeing. Signed-off-by: Takshak Chahande <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Reviewed-by: Takshak Chahande <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-07-30selftests/bpf: fix clearing buffered output between tests/subtestsAndrii Nakryiko1-1/+1
Clear buffered output once test or subtests finishes even if test was successful. Not doing this leads to accumulation of output from previous tests and on first failed tests lots of irrelevant output will be dumped, greatly confusing things. v1->v2: fix Fixes tag, add more context to patch Fixes: 3a516a0a3a7b ("selftests/bpf: add sub-tests support for test_progs") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-07-30selftests/bpf: add test for bpf_tcp_gen_syncookiePetar Penkov3-13/+99
Modify the existing bpf_tcp_check_syncookie test to also generate a SYN cookie, pass the packet to the kernel, and verify that the two cookies are the same (and both valid). Since cloned SKBs are skipped during generic XDP, this test does not issue a SYN cookie when run in XDP mode. We therefore only check that a valid SYN cookie was issued at the TC hook. Additionally, verify that the MSS for that SYN cookie is within expected range. Signed-off-by: Petar Penkov <[email protected]> Reviewed-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-07-30selftests/bpf: bpf_tcp_gen_syncookie->bpf_helpersPetar Penkov1-0/+3
Expose bpf_tcp_gen_syncookie to selftests. Signed-off-by: Petar Penkov <[email protected]> Reviewed-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2019-07-30bpf: sync bpf.h to tools/Petar Penkov1-3/+34
Sync updated documentation for bpf_redirect_map. Sync the bpf_tcp_gen_syncookie helper function definition with the one in tools/uapi. Signed-off-by: Petar Penkov <[email protected]> Reviewed-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
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