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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]>
2020-03-12selftests: 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]>
2020-03-12bpftool: Use linux/types.h from source tree for profiler buildTobias Klauser2-10/+12
When compiling bpftool on a system where the /usr/include/asm symlink doesn't exist (e.g. on an Ubuntu system without gcc-multilib installed), the build fails with: CLANG skeleton/profiler.bpf.o In file included from skeleton/profiler.bpf.c:4: In file included from /usr/include/linux/bpf.h:11: /usr/include/linux/types.h:5:10: fatal error: 'asm/types.h' file not found #include <asm/types.h> ^~~~~~~~~~~~~ 1 error generated. make: *** [Makefile:123: skeleton/profiler.bpf.o] Error 1 This indicates that the build is using linux/types.h from system headers instead of source tree headers. To fix this, adjust the clang search path to include the necessary headers from tools/testing/selftests/bpf/include/uapi and tools/include/uapi. Also use __bitwise__ instead of __bitwise in skeleton/profiler.h to avoid clashing with the definition in tools/testing/selftests/bpf/include/uapi/linux/types.h. 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]
2020-03-11tools/runqslower: Add BPF_F_CURRENT_CPU for running selftest on older kernelsAndrii Nakryiko1-0/+1
Libbpf compiles and runs subset of selftests on each PR in its Github mirror repository. To allow still building up-to-date selftests against outdated kernel images, add back BPF_F_CURRENT_CPU definitions back. N.B. BCC's runqslower version ([0]) doesn't need BPF_F_CURRENT_CPU due to use of locally checked in vmlinux.h, generated against kernel with 1aae4bdd7879 ("bpf: Switch BPF UAPI #define constants used from BPF program side to enums") applied. [0] https://github.com/iovisor/bcc/pull/2809 Fixes: 367d82f17eff (" tools/runqslower: Drop copy/pasted BPF_F_CURRENT_CPU definiton") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[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
2020-03-10bpftool: Fix typo in bash-completionSong Liu1-1/+1
_bpftool_get_map_names => _bpftool_get_prog_names for prog-attach|detach. Fixes: 99f9863a0c45 ("bpftool: Match maps by name") 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]
2020-03-10bpftool: Bash completion for "bpftool prog profile"Song Liu1-1/+44
Add bash completion for "bpftool prog profile" command. 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]
2020-03-10bpftool: Documentation for bpftool prog profileSong Liu1-0/+19
Add documentation for the new bpftool prog profile command. 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]
2020-03-10bpftool: Introduce "prog profile" commandSong Liu5-1/+608
With fentry/fexit programs, it is possible to profile BPF program with hardware counters. Introduce bpftool "prog profile", which measures key metrics of a BPF program. bpftool prog profile command creates per-cpu perf events. Then it attaches fentry/fexit programs to the target BPF program. The fentry program saves perf event value to a map. The fexit program reads the perf event again, and calculates the difference, which is the instructions/cycles used by the target program. Example input and output: ./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%) This command measures cycles and instructions for BPF program with id 337 for 3 seconds. The program has triggered 4228 times. The rest of the output is similar to perf-stat. In this example, the counters were only counting ~84% of the time because of time multiplexing of perf counters. Note that, this approach measures cycles and instructions in very small increments. So the fentry/fexit programs introduce noticeable errors to the measurement results. The fentry/fexit programs are generated with BPF skeletons. Therefore, we build bpftool twice. The first time _bpftool is built without skeletons. Then, _bpftool is used to generate the skeletons. The second time, bpftool is built with skeletons. Signed-off-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Acked-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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]>
2020-03-07Merge 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
2020-03-05tc-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]>
2020-03-04bpf: 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]
2020-03-04tools/libbpf: Add support for BPF_MODIFY_RETURNKP Singh1-0/+4
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: Introduce BPF_MODIFY_RETURNKP Singh1-0/+1
When multiple programs are attached, each program receives the return value from the previous program on the stack and the last program provides the return value to the attached function. The fmod_ret bpf programs are run after the fentry programs and before the fexit programs. The original function is only called if all the fmod_ret programs return 0 to avoid any unintended side-effects. The success value, i.e. 0 is not currently configurable but can be made so where user-space can specify it at load time. For example: int func_to_be_attached(int a, int b) { <--- do_fentry do_fmod_ret: <update ret by calling fmod_ret> if (ret != 0) goto do_fexit; original_function: <side_effects_happen_here> } <--- do_fexit The fmod_ret program attached to this function can be defined as: SEC("fmod_ret/func_to_be_attached") int BPF_PROG(func_name, int a, int b, int ret) { // This will skip the original function logic. return 1; } The first fmod_ret program is passed 0 in its return argument. 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]
2020-03-04tools/runqslower: Drop copy/pasted BPF_F_CURRENT_CPU definitonAndrii Nakryiko1-3/+0
With BPF_F_CURRENT_CPU being an enum, it is now captured in vmlinux.h and is readily usable by runqslower. So drop local copy/pasted definition in favor of the one coming from vmlinux.h. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-04libbpf: Assume unsigned values for BTF_KIND_ENUMAndrii Nakryiko2-5/+5
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]
2020-03-04bpf: Switch BPF UAPI #define constants used from BPF program side to enumsAndrii Nakryiko1-67/+110
Switch BPF UAPI constants, previously defined as #define macro, to anonymous enum values. This preserves constants values and behavior in expressions, but has added advantaged of being captured as part of DWARF and, subsequently, BTF type info. Which, in turn, greatly improves usefulness of generated vmlinux.h for BPF applications, as it will not require BPF users to copy/paste various flags and constants, which are frequently used with BPF helpers. Only those constants that are used/useful from BPF program side are converted. 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]>
2020-03-03selftests: forwarding: lib: Add tc_rule_handle_stats_get()Petr Machata1-0/+11
The function tc_rule_stats_get() fetches a given statistic of a TC rule given the rule preference. Another common way to reference a rule is using its handle. Introduce a dual to the aforementioned function that gets a statistic given rule handle. Signed-off-by: Petr Machata <[email protected]> Reviewed-by: Amit Cohen <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-03libbpf: Fix handling of optional field_name in btf_dump__emit_type_declAndrii Nakryiko1-1/+1
Internal functions, used by btf_dump__emit_type_decl(), assume field_name is never going to be NULL. Ensure it's always the case. Fixes: 9f81654eebe8 ("libbpf: Expose BTF-to-C type declaration emitting API") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-03selftests/bpf: Test new __sk_buff field gso_sizeWillem de Bruijn3-0/+50
Analogous to the gso_segs selftests introduced in commit d9ff286a0f59 ("bpf: allow BPF programs access skb_shared_info->gso_segs field"). Signed-off-by: Willem de Bruijn <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-03bpf: Sync uapi bpf.h to tools/Willem de Bruijn1-0/+1
sync tools/include/uapi/linux/bpf.h to match include/uapi/linux/bpf.h Signed-off-by: Willem de Bruijn <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-03selftests/net/fib_tests: update addr_metric_test for peer route testingHangbin Liu1-3/+31
This patch update {ipv4, ipv6}_addr_metric_test with 1. Set metric of address with peer route and see if the route added correctly. 2. Modify metric and peer address for peer route and see if the route changed correctly. Signed-off-by: Hangbin Liu <[email protected]> Reviewed-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-02selftests/bpf: Add link pinning selftestsAndrii Nakryiko2-0/+130
Add selftests validating link pinning/unpinning and associated BPF link (attachment) lifetime. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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