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2019-08-13libbpf: attempt to load kernel BTF from sysfs firstAndrii Nakryiko1-7/+57
Add support for loading kernel BTF from sysfs (/sys/kernel/btf/vmlinux) as a target BTF. Also extend the list of on disk search paths for vmlinux ELF image with entries that perf is searching for. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-13selftests/bpf: fix race in flow dissector testsPetar Penkov2-8/+27
Since the "last_dissection" map holds only the flow keys for the most recent packet, there is a small race in the skb-less flow dissector tests if a new packet comes between transmitting the test packet, and reading its keys from the map. If this happens, the test packet keys will be overwritten and the test will fail. Changing the "last_dissection" map to a hash map, keyed on the source/dest port pair resolves this issue. Additionally, let's clear the last test results from the map between tests to prevent previous test cases from interfering with the following test cases. Fixes: 0905beec9f52 ("selftests/bpf: run flow dissector tests in skb-less mode") Signed-off-by: Petar Penkov <ppenkov@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-13tools: bpftool: add feature check for zlibPeter Wu1-3/+8
bpftool requires libelf, and zlib for decompressing /proc/config.gz. zlib is a transitive dependency via libelf, and became mandatory since elfutils 0.165 (Jan 2016). The feature check of libelf is already done in the elfdep target of tools/lib/bpf/Makefile, pulled in by bpftool via a dependency on libbpf.a. Add a similar feature check for zlib. Suggested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Peter Wu <peter@lekensteyn.nl> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-12tools: bpftool: fix reading from /proc/config.gzPeter Wu2-53/+54
/proc/config has never existed as far as I can see, but /proc/config.gz is present on Arch Linux. Add support for decompressing config.gz using zlib which is a mandatory dependency of libelf anyway. Replace existing stdio functions with gzFile operations since the latter transparently handles uncompressed and gzip-compressed files. Cc: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Peter Wu <peter@lekensteyn.nl> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-08-07tools/bpf: fix core_reloc.c compilation errorYonghong Song1-1/+1
On my local machine, I have the following compilation errors: ===== In file included from prog_tests/core_reloc.c:3:0: ./progs/core_reloc_types.h:517:46: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘fancy_char_ptr_t’ typedef const char * const volatile restrict fancy_char_ptr_t; ^ ./progs/core_reloc_types.h:527:2: error: unknown type name ‘fancy_char_ptr_t’ fancy_char_ptr_t d; ^ ===== I am using gcc 4.8.5. Later compilers may change their behavior not emitting the error. Nevertheless, let us fix the issue. "restrict" can be tested without typedef. Fixes: 9654e2ae908e ("selftests/bpf: add CO-RE relocs modifiers/typedef tests") Cc: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs misc testsAndrii Nakryiko4-0/+106
Add tests validating few edge-cases of capturing offset relocations. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs ints testsAndrii Nakryiko11-0/+209
Add various tests validating handling compatible/incompatible integer types. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs ptr-as-array testsAndrii Nakryiko5-0/+69
Add test validating correct relocation handling for cases where pointer to something is used as an array. E.g.: int *ptr = ...; int x = ptr[42]; Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs modifiers/typedef testsAndrii Nakryiko6-0/+170
Add tests validating correct handling of various combinations of typedefs and const/volatile/restrict modifiers. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs enum/ptr/func_proto testsAndrii Nakryiko10-0/+167
Test CO-RE relocation handling of ints, enums, pointers, func protos, etc. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs array testsAndrii Nakryiko11-0/+201
Add tests for various array handling/relocation scenarios. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs nesting testsAndrii Nakryiko16-0/+421
Add a bunch of test validating correct handling of nested structs/unions. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs struct flavors testsAndrii Nakryiko5-0/+117
Add tests verifying that BPF program can use various struct/union "flavors" to extract data from the same target struct/union. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add CO-RE relocs testing setupAndrii Nakryiko2-0/+165
Add CO-RE relocation test runner. Add one simple test validating that libbpf's logic for searching for kernel image and loading BTF out of it works. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07selftests/bpf: add BPF_CORE_READ relocatable read macroAndrii Nakryiko1-0/+20
Add BPF_CORE_READ macro used in tests to do bpf_core_read(), which automatically captures offset relocation. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07libbpf: implement BPF CO-RE offset relocation algorithmAndrii Nakryiko2-18/+864
This patch implements the core logic for BPF CO-RE offsets relocations. Every instruction that needs to be relocated has corresponding bpf_offset_reloc as part of BTF.ext. Relocations are performed by trying to match recorded "local" relocation spec against potentially many compatible "target" types, creating corresponding spec. Details of the algorithm are noted in corresponding comments in the code. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07libbpf: add .BTF.ext offset relocation section loadingAndrii Nakryiko3-42/+136
Add support for BPF CO-RE offset relocations. Add section/record iteration macros for .BTF.ext. These macro are useful for iterating over each .BTF.ext record, either for dumping out contents or later for BPF CO-RE relocation handling. To enable other parts of libbpf to work with .BTF.ext contents, moved a bunch of type definitions into libbpf_internal.h. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07libbpf: convert libbpf code to use new btf helpersAndrii Nakryiko3-221/+158
Simplify code by relying on newly added BTF helper functions. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-07libbpf: add helpers for working with BTF typesAndrii Nakryiko1-0/+178
Add lots of frequently used helpers that simplify working with BTF types. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-06selftests/bpf: test_progs: drop extra trailing tabStanislav Fomichev1-1/+1
Small (un)related cleanup. Cc: Andrii Nakryiko <andriin@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-06selftests/bpf: test_progs: test__printf -> printfStanislav Fomichev10-38/+22
Now that test__printf is a simple wraper around printf, let's drop it (and test__vprintf as well). Cc: Andrii Nakryiko <andriin@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-06selftests/bpf: test_progs: switch to open_memstreamStanislav Fomichev2-56/+62
Use open_memstream to override stdout during test execution. The copy of the original stdout is held in env.stdout and used to print subtest info and dump failed log. test_{v,}printf are now simple wrappers around stdout and will be removed in the next patch. v5: * fix -v crash by always setting env.std{in,err} (Alexei Starovoitov) * drop force_log check from stdio_hijack (Andrii Nakryiko) v4: * one field per line for stdout/stderr (Andrii Nakryiko) v3: * don't do strlen over log_buf, log_cnt has it already (Andrii Nakryiko) v2: * add ifdef __GLIBC__ around open_memstream (maybe pointless since we already depend on glibc for argp_parse) * hijack stderr as well (Andrii Nakryiko) * don't hijack for every test, do it once (Andrii Nakryiko) * log_cap -> log_size (Andrii Nakryiko) * do fseeko in a proper place (Andrii Nakryiko) * check open_memstream returned value (Andrii Nakryiko) Cc: Andrii Nakryiko <andriin@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com>
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 <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Yonghong Song <yhs@fb.com>
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 <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <ctakshak@fb.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Reviewed-by: Takshak Chahande <ctakshak@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <ppenkov@google.com> Reviewed-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <ppenkov@google.com> Reviewed-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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 <ppenkov@google.com> Reviewed-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-29tools: Add definitions for devmap_hash map typeToke Høiland-Jørgensen4-4/+21
This adds selftest and bpftool updates for the devmap_hash map type. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-29tools/libbpf_probes: Add new devmap_hash typeToke Høiland-Jørgensen1-0/+1
This adds the definition for BPF_MAP_TYPE_DEVMAP_HASH to libbpf_probes.c in tools/lib/bpf. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-29tools/include/uapi: Add devmap_hash BPF map typeToke Høiland-Jørgensen1-0/+1
This adds the devmap_hash BPF map type to the uapi headers in tools/. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: convert send_signal.c to use subtestsAndrii Nakryiko1-3/+6
Convert send_signal set of tests to be exposed as three sub-tests. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: convert bpf_verif_scale.c to sub-tests APIAndrii Nakryiko1-37/+40
Expose each BPF verifier scale test as individual sub-test to allow independent results output and test selection. Test run results now look like this: $ sudo ./test_progs -t verif/ #3/1 loop3.o:OK #3/2 test_verif_scale1.o:OK #3/3 test_verif_scale2.o:OK #3/4 test_verif_scale3.o:OK #3/5 pyperf50.o:OK #3/6 pyperf100.o:OK #3/7 pyperf180.o:OK #3/8 pyperf600.o:OK #3/9 pyperf600_nounroll.o:OK #3/10 loop1.o:OK #3/11 loop2.o:OK #3/12 strobemeta.o:OK #3/13 strobemeta_nounroll1.o:OK #3/14 strobemeta_nounroll2.o:OK #3/15 test_sysctl_loop1.o:OK #3/16 test_sysctl_loop2.o:OK #3/17 test_xdp_loop.o:OK #3/18 test_seg6_loop.o:OK #3 bpf_verif_scale:OK Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: add sub-tests support for test_progsAndrii Nakryiko2-29/+185
Allow tests to have their own set of sub-tests. Also add ability to do test/subtest selection using `-t <test-name>/<subtest-name>` and `-n <test-nums-set>/<subtest-nums-set>`, as an extension of existing -t/-n selector options. For the <test-num-set> format: it's a comma-separated list of either individual test numbers (1-based), or range of test numbers. E.g., all of the following are valid sets of test numbers: - 10 - 1,2,3 - 1-3 - 5-10,1,3-4 '/<subtest' part is optional, but has the same format. E.g., to select test #3 and its sub-tests #10 through #15, use: -t 3/10-15. Similarly, to select tests by name, use `-t verif/strobe`: $ sudo ./test_progs -t verif/strobe #3/12 strobemeta.o:OK #3/13 strobemeta_nounroll1.o:OK #3/14 strobemeta_nounroll2.o:OK #3 bpf_verif_scale:OK Summary: 1/3 PASSED, 0 FAILED Example of using subtest API is in the next patch, converting bpf_verif_scale.c tests to use sub-tests. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: abstract away test log outputAndrii Nakryiko12-73/+183
This patch changes how test output is printed out. By default, if test had no errors, the only output will be a single line with test number, name, and verdict at the end, e.g.: #31 xdp:OK If test had any errors, all log output captured during test execution will be output after test completes. It's possible to force output of log with `-v` (`--verbose`) option, in which case output won't be buffered and will be output immediately. To support this, individual tests are required to use helper methods for logging: `test__printf()` and `test__vprintf()`. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftest/bpf: centralize libbpf logging management for test_progsAndrii Nakryiko3-12/+38
Make test_progs test runner own libbpf logging. Also introduce two levels of verbosity: -v and -vv. First one will be used in subsequent patches to enable test log output always. Second one increases verbosity level of libbpf logging further to include debug output as well. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27libbpf: return previous print callback from libbpf_set_printAndrii Nakryiko2-2/+5
By returning previously set print callback from libbpf_set_print, it's possible to restore it, eventually. This is useful when running many independent test with one default print function, but overriding log verbosity for particular subset of tests. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: add test selectors by number and name to test_progsAndrii Nakryiko1-4/+39
Add ability to specify either test number or test name substring to narrow down a set of test to run. Usage: sudo ./test_progs -n 1 sudo ./test_progs -t attach_probe Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: revamp test_progs to allow more controlAndrii Nakryiko2-15/+77
Refactor test_progs to allow better control on what's being run. Also use argp to do argument parsing, so that it's easier to keep adding more options. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-27selftests/bpf: prevent headers to be compiled as C codeAndrii Nakryiko1-3/+3
Apprently listing header as a normal dependency for a binary output makes it go through compilation as if it was C code. This currently works without a problem, but in subsequent commits causes problems for differently generated test.h for test_progs. Marking those headers as order-only dependency solves the issue. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25selftests/bpf: support BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAPStanislav Fomichev2-0/+72
Exit as soon as we found that packet is encapped when BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAP is passed. Add appropriate selftest cases. v2: * Subtract sizeof(struct iphdr) from .iph_inner.tot_len (Willem de Bruijn) Acked-by: Petar Penkov <ppenkov@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Cc: Song Liu <songliubraving@fb.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Petar Penkov <ppenkov@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25bpf/flow_dissector: support ipv6 flow_label and BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABELStanislav Fomichev3-0/+57
Add support for exporting ipv6 flow label via bpf_flow_keys. Export flow label from bpf_flow.c and also return early when BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL is passed. Acked-by: Petar Penkov <ppenkov@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Cc: Song Liu <songliubraving@fb.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Petar Penkov <ppenkov@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25selftests/bpf: support BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAGStanislav Fomichev2-7/+155
bpf_flow.c: exit early unless BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG is passed in flags. Also, set ip_proto earlier, this makes sure we have correct value with fragmented packets. Add selftest cases to test ipv4/ipv6 fragments and skip eth_get_headlen tests that don't have BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG flag. eth_get_headlen calls flow dissector with BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG flag so we can't run tests that have different set of input flags against it. v2: * sefltests -> selftests (Willem de Bruijn) * Reword a comment about eth_get_headlen flags (Song Liu) Acked-by: Petar Penkov <ppenkov@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Cc: Song Liu <songliubraving@fb.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Petar Penkov <ppenkov@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25tools/bpf: sync bpf_flow_keys flagsStanislav Fomichev1-0/+5
Export bpf_flow_keys flags to tools/libbpf/selftests. Acked-by: Petar Penkov <ppenkov@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Cc: Song Liu <songliubraving@fb.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Petar Penkov <ppenkov@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-25selftests/bpf: Add selftests for bpf_perf_event_outputAllan Zhang2-1/+105
Software event output is only enabled by a few prog types. This test is to ensure that all supported types are enabled for bpf_perf_event_output successfully. Signed-off-by: Allan Zhang <allanzhang@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-23selftests/bpf: remove perf buffer helpersAndrii Nakryiko2-134/+0
libbpf's perf_buffer API supersedes trace_helper.h's helpers. Remove those helpers after all existing users were already moved to perf_buffer API. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-23selftests/bpf: switch test_tcpnotify to perf_buffer APIAndrii Nakryiko1-54/+36
Switch test_tcpnotify test to use libbpf's perf_buffer API instead of re-implementing portion of it. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-23selftests/bpf: convert test_get_stack_raw_tp to perf_buffer APIAndrii Nakryiko2-36/+44
Convert test_get_stack_raw_tp test to new perf_buffer API. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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