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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. Miller43-327/+1095
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]
2020-03-13selftests/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]
2020-03-13tools/bpf: Move linux/types.h for selftests and bpftoolTobias Klauser2-26/+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]>
2020-03-13selftests: 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]>
2020-03-13Merge 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. Miller6-22/+54
Minor overlapping changes, nothing serious. Signed-off-by: David S. Miller <[email protected]>
2020-03-12bpf: Add bpf_xdp_output() helperEelco Chaudron2-0/+77
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]
2020-03-12Merge 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 ...
2020-03-12tc-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]>
2020-03-12selftests: net: Add SO_REUSEADDR test to check if 4-tuples are fully utilized.Kuniyuki Iwashima4-0/+200
This commit adds a test to check if we can fully utilize 4-tuples for connect() when all ephemeral ports are exhausted. The test program changes the local port range to use only one port and binds two sockets with or without SO_REUSEADDR and SO_REUSEPORT, and with the same EUID or with different EUIDs, then do listen(). We should be able to bind only one socket having both SO_REUSEADDR and SO_REUSEPORT per EUID, which restriction is to prevent unintentional listen(). Signed-off-by: Kuniyuki Iwashima <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-10selftests/bpf: Add test for the packed enum member in struct/unionYoshiki Komachi1-0/+42
Add a simple test to the existing selftest program in order to make sure that a packed enum member in struct unexceeds the struct_size. Signed-off-by: Yoshiki Komachi <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-09mptcp: selftests: add rcvbuf set optionFlorian Westphal2-15/+54
allows to run the tests with fixed receive buffer by passing "-R <value>" to mptcp_connect.sh. While at it, add a default 10 second poll timeout so the "-t" becomes optional -- this makes mptcp_connect simpler to use during manual testing. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-09Merge tag 'ktest-v5.6' of ↵Linus Torvalds2-19/+19
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull Ktest fixes and clean ups from Steven Rostedt: - Make the default option oldconfig instead of randconfig (one too many times I lost my config because I left the build type out) - Add timeout to ssh sync to sync before reboot (prevents test hangs) - A couple of spelling fix patches * tag 'ktest-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Fix typos in ktest.pl ktest: Add timeout for ssh sync testing ktest: Make default build option oldconfig not randconfig ktest: Fix some typos in sample.conf
2020-03-09selftests: bpf: Enable UDP sockmap reuseport testsLorenz Bauer1-6/+0
Remove the guard that disables UDP tests now that sockmap has support for them. Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Jakub Sitnicki <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-09selftests: bpf: Add tests for UDP sockets in sockmapLorenz Bauer1-30/+127
Expand the TCP sockmap test suite to also check UDP sockets. Signed-off-by: Jakub Sitnicki <[email protected]> Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-09selftests: bpf: Don't listen() on UDP socketsLorenz Bauer1-22/+25
Most tests for TCP sockmap can be adapted to UDP sockmap if the listen call is skipped. Rename listen_loopback, etc. to socket_loopback and skip listen() for SOCK_DGRAM. Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Jakub Sitnicki <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-09ktest: Fix typos in ktest.plMasanari Iida1-6/+6
This patch fixes multipe spelling typo found in ktest.pl. Link: http://lkml.kernel.org/r/[email protected] Acked-by: Randy Dunlap <[email protected]> Signed-off-by: Masanari Iida <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2020-03-09ktest: Add timeout for ssh sync testingSteven Rostedt (VMware)1-1/+1
Before rebooting the box, a "ssh sync" is called to the test machine to see if it is alive or not. But if the test machine is in a partial state, that ssh may never actually finish, and the ktest test hangs. Add a 10 second timeout to the sync test, which will fail after 10 seconds and then cause the test to reboot the test machine. Cc: [email protected] Fixes: 6474ace999edd ("ktest.pl: Powercycle the box on reboot if no connection can be made") Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2020-03-09ktest: Make default build option oldconfig not randconfigSteven Rostedt (VMware)2-2/+2
For the last time, I screwed up my ktest config file, and the build went into the default "randconfig", blowing away the .config that I had set up. The reason for the default randconfig was because when this was first written, I wanted to do a bunch of randconfigs. But as time progressed, ktest isn't about randconfig anymore, and because randconfig destroys the config in the build directory, it's a dangerous default to have. Use oldconfig as the default. Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2020-03-09ktest: Fix some typos in sample.confMasanari Iida1-10/+10
This patch fixes some spelling typo in sample.conf Link: http://lkml.kernel.org/r/[email protected] Acked-by: Randy Dunlap <[email protected]> Signed-off-by: Masanari Iida <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2020-03-09Merge 5.6-rc5 into driver-core-nextGreg Kroah-Hartman35-120/+829
We need the driver core and debugfs changes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-03-07Merge tag 'for-linus-2020-03-07' of ↵Linus Torvalds1-0/+1
gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux Pull thread fixes from Christian Brauner: "Here are a few hopefully uncontroversial fixes: - Use RCU_INIT_POINTER() when initializing rcu protected members in task_struct to fix sparse warnings. - Add pidfd_fdinfo_test binary to .gitignore file" * tag 'for-linus-2020-03-07' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux: selftests: pidfd: Add pidfd_fdinfo_test in .gitignore exit: Fix Sparse errors and warnings fork: Use RCU_INIT_POINTER() instead of rcu_access_pointer()
2020-03-06Merge tag 'linux-kselftest-5.6-rc5' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest update from Shuah Khan: "This consists of a cleanup patch to undo changes to global .gitignore that added selftests/lkdtm objects and add them to a local selftests/lkdtm/.gitignore. Summary of Linus's comments on local vs. global gitignore scope: - Keep local gitignore patterns in local files. - Put only global gitignore patterns in the top-level gitignore file. Local scope keeps things much better separated. It also incidentally means that if a directory gets renamed, the gitignore file continues to work unless in the case of renaming the actual files themselves that are named in the gitignore" * tag 'linux-kselftest-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftest/lkdtm: Use local .gitignore
2020-03-06selftests: bpf: Add test for JMP32 JSET BPF_X with upper bits setLuke Nelson1-0/+15
The existing tests attempt to check that JMP32 JSET ignores the upper bits in the operand registers. However, the tests missed one such bug in the x32 JIT that is only uncovered when a previous instruction pollutes the upper 32 bits of the registers. This patch adds a new test case that catches the bug by first executing a 64-bit JSET to pollute the upper 32-bits of the temporary registers, followed by a 32-bit JSET which should ignore the upper 32 bits. Co-developed-by: Xi Wang <[email protected]> Signed-off-by: Xi Wang <[email protected]> Signed-off-by: Luke Nelson <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-05tc-testing: updated tdc tests for basic filter with canid extended match rulesRoman Mashak1-0/+220
Signed-off-by: Roman Mashak <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-05tc-testing: list kernel options for basic filter with canid ematch.Roman Mashak1-0/+6
Signed-off-by: Roman Mashak <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-05selftests: forwarding: ETS: Use Qdisc countersPetr Machata4-13/+30
Currently the SW-datapath ETS selftests use "ip link" stats to obtain the number of packets that went through a given band. mlxsw then uses ethtool per-priority counters. Instead, change both to use qdiscs. In SW datapath this is the obvious choice, and now that mlxsw offloads FIFO, this should work on the offloaded datapath as well. This has the effect of verifying that the FIFO offload works. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-05selftests/bpf: Add send_signal_sched_switch testYonghong Song2-0/+66
Added one test, send_signal_sched_switch, to test bpf_send_signal() helper triggered by sched/sched_switch tracepoint. This test can be used to verify kernel deadlocks fixed by the previous commit. The test itself is heavily borrowed from Commit eac9153f2b58 ("bpf/stackmap: Fix deadlock with rq_lock in bpf_get_stack()"). Signed-off-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Cc: Song Liu <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-04seccomp: allow TSYNC and USER_NOTIF togetherTycho Andersen1-1/+73
The restriction introduced in 7a0df7fbc145 ("seccomp: Make NEW_LISTENER and TSYNC flags exclusive") is mostly artificial: there is enough information in a seccomp user notification to tell which thread triggered a notification. The reason it was introduced is because TSYNC makes the syscall return a thread-id on failure, and NEW_LISTENER returns an fd, and there's no way to distinguish between these two cases (well, I suppose the caller could check all fds it has, then do the syscall, and if the return value was an fd that already existed, then it must be a thread id, but bleh). Matthew would like to use these two flags together in the Chrome sandbox which wants to use TSYNC for video drivers and NEW_LISTENER to proxy syscalls. So, let's fix this ugliness by adding another flag, TSYNC_ESRCH, which tells the kernel to just return -ESRCH on a TSYNC error. This way, NEW_LISTENER (and any subsequent seccomp() commands that want to return positive values) don't conflict with each other. Suggested-by: Matthew Denton <[email protected]> Signed-off-by: Tycho Andersen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Kees Cook <[email protected]>
2020-03-04bpf: Add selftests for BPF_MODIFY_RETURNKP Singh2-0/+114
Test for two scenarios: * When the fmod_ret program returns 0, the original function should be called along with fentry and fexit programs. * When the fmod_ret program returns a non-zero value, the original function should not be called, no side effect should be observed and fentry and fexit programs should be called. The result from the kernel function call and whether a side-effect is observed is returned via the retval attr of the BPF_PROG_TEST_RUN (bpf) syscall. Signed-off-by: KP Singh <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-04bpf: Add test ops for BPF_PROG_TYPE_TRACINGKP Singh3-67/+28
The current fexit and fentry tests rely on a different program to exercise the functions they attach to. Instead of doing this, implement the test operations for tracing which will also be used for BPF_MODIFY_RETURN in a subsequent patch. Also, clean up the fexit test to use the generated skeleton. Signed-off-by: KP Singh <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-04selftests/bpf: Support out-of-tree vmlinux builds for VMLINUX_BTFAndrii Nakryiko1-4/+7
Add detection of out-of-tree built vmlinux image for the purpose of VMLINUX_BTF detection. According to Documentation/kbuild/kbuild.rst, O takes precedence over KBUILD_OUTPUT. Also ensure ~/path/to/build/dir also works by relying on wildcard's resolution first, but then applying $(abspath) at the end to also handle O=../../whatever cases. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-04libbpf: Assume unsigned values for BTF_KIND_ENUMAndrii Nakryiko1-1/+1
Currently, BTF_KIND_ENUM type doesn't record whether enum values should be interpreted as signed or unsigned. In Linux, most enums are unsigned, though, so interpreting them as unsigned matches real world better. Change btf_dump test case to test maximum 32-bit value, instead of negative value. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-03selftests: mlxsw: qos_defprio: Use until_counter_isPetr Machata1-14/+4
Instead of hand-coding the busywait() predicate, use the until_counter_is() introduced recently. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Amit Cohen <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-03selftests: forwarding: tc_common: Convert to use busywaitPetr Machata1-28/+4
A function busywait() was recently added based on the logic in __tc_check_packets(). Convert the code in tc_common to use the new function. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Amit Cohen <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-03selftests: forwarding: Convert until_counter_is() to take expressionPetr Machata2-6/+6
until_counter_is() currently takes as an argument a number and the condition holds when the current counter value is >= that number. Make the function more generic by taking a partial expression instead of just the number. Convert the two existing users. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Amit Cohen <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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