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2024-07-02selftests/bpf: Add testcase where 7th argment is structPu Lehui1-0/+35
Add testcase where 7th argument is struct for architectures with 8 argument registers, and increase the complexity of the struct. Signed-off-by: Pu Lehui <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Björn Töpel <[email protected]> Acked-by: Björn Töpel <[email protected]> Acked-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-07-02selftests/bpf: Factor out many args tests from tracing_structPu Lehui2-54/+60
Factor out many args tests from tracing_struct and rename some function names to make more sense. Meanwhile, remove unnecessary skeleton detach operation as it will be covered by skeleton destroy operation. Signed-off-by: Pu Lehui <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-07-01selftests/bpf: Add selftest for bpf_xdp_flow_lookup kfuncLorenzo Bianconi1-0/+144
Introduce e2e selftest for bpf_xdp_flow_lookup kfunc through xdp_flowtable utility. Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/b74393fb4539aecbbd5ac7883605f86a95fb0b6b.1719698275.git.lorenzo@kernel.org
2024-06-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski3-0/+255
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: e3f02f32a050 ("ionic: fix kernel panic due to multi-buffer handling") d9c04209990b ("ionic: Mark error paths in the data path as unlikely") Signed-off-by: Jakub Kicinski <[email protected]>
2024-06-26selftests/bpf: Move ARRAY_SIZE to bpf_misc.hJiri Olsa14-40/+13
ARRAY_SIZE is used on multiple places, move its definition in bpf_misc.h header. Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Reviewed-by: Alan Maguire <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-26bpf: add new negative selftests to cover missing check_func_arg_reg_off() ↵Matt Bobrowski4-2/+48
and reg->type check Add new negative selftests which are intended to cover the out-of-bounds memory access that could be performed on a CONST_PTR_TO_DYNPTR within functions taking a ARG_PTR_TO_DYNPTR | MEM_RDONLY as an argument, and acceptance of invalid register types i.e. PTR_TO_BTF_ID within functions taking a ARG_PTR_TO_DYNPTR | MEM_RDONLY. Reported-by: Kumar Kartikeya Dwivedi <[email protected]> Acked-by: Kumar Kartikeya Dwivedi <[email protected]> Acked-by: Eduard Zingerman <[email protected]> Signed-off-by: Matt Bobrowski <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-25selftests/bpf: add test validating uprobe/uretprobe stack tracesAndrii Nakryiko1-0/+96
Add a set of tests to validate that stack traces captured from or in the presence of active uprobes and uretprobes are valid and complete. For this we use BPF program that are installed either on entry or exit of user function, plus deep-nested USDT. One of target funtions (target_1) is recursive to generate two different entries in the stack trace for the same uprobe/uretprobe, testing potential edge conditions. If there is no fixes, we get something like this for one of the scenarios: caller: 0x758fff - 0x7595ab target_1: 0x758fd5 - 0x758fff target_2: 0x758fca - 0x758fd5 target_3: 0x758fbf - 0x758fca target_4: 0x758fb3 - 0x758fbf ENTRY #0: 0x758fb3 (in target_4) ENTRY #1: 0x758fd3 (in target_2) ENTRY #2: 0x758ffd (in target_1) ENTRY #3: 0x7fffffffe000 ENTRY #4: 0x7fffffffe000 ENTRY #5: 0x6f8f39 ENTRY #6: 0x6fa6f0 ENTRY #7: 0x7f403f229590 Entry #3 and #4 (0x7fffffffe000) are uretprobe trampoline addresses which obscure actual target_1 and another target_1 invocations. Also note that between entry #0 and entry #1 we are missing an entry for target_3. With fixes, we get desired full stack traces: caller: 0x758fff - 0x7595ab target_1: 0x758fd5 - 0x758fff target_2: 0x758fca - 0x758fd5 target_3: 0x758fbf - 0x758fca target_4: 0x758fb3 - 0x758fbf ENTRY #0: 0x758fb7 (in target_4) ENTRY #1: 0x758fc8 (in target_3) ENTRY #2: 0x758fd3 (in target_2) ENTRY #3: 0x758ffd (in target_1) ENTRY #4: 0x758ff3 (in target_1) ENTRY #5: 0x75922c (in caller) ENTRY #6: 0x6f8f39 ENTRY #7: 0x6fa6f0 ENTRY #8: 0x7f986adc4cd0 Now there is a logical and complete sequence of function calls. Link: https://lore.kernel.org/all/[email protected]/ Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Jiri Olsa <[email protected]> Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
2024-06-24selftests/bpf: Add tests for may_goto with negative offset.Alexei Starovoitov1-0/+52
Add few tests with may_goto and negative offset. Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-24selftests/bpf: Add more ring buffer test coverageDaniel Borkmann1-0/+46
Add test coverage for reservations beyond the ring buffer size in order to validate that bpf_ringbuf_reserve() rejects the request with NULL, all other ring buffer tests keep passing as well: # ./vmtest.sh -- ./test_progs -t ringbuf [...] ./test_progs -t ringbuf [ 1.165434] bpf_testmod: loading out-of-tree module taints kernel. [ 1.165825] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel [ 1.284001] tsc: Refined TSC clocksource calibration: 3407.982 MHz [ 1.286871] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fc34e357, max_idle_ns: 440795379773 ns [ 1.289555] clocksource: Switched to clocksource tsc #274/1 ringbuf/ringbuf:OK #274/2 ringbuf/ringbuf_n:OK #274/3 ringbuf/ringbuf_map_key:OK #274/4 ringbuf/ringbuf_write:OK #274 ringbuf:OK #275 ringbuf_multi:OK [...] Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> [ Test fixups for getting BPF CI back to work ] Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-21selftests/bpf: Add kfunc_call test for simple dtor in bpf_testmodAlan Maguire1-0/+37
add simple kfuncs to create/destroy a context type to bpf_testmod, register them and add a kfunc_call test to use them. This provides test coverage for registration of dtor kfuncs from modules. By transferring the context pointer to a map value as a __kptr we also trigger the map-based dtor cleanup logic, improving test coverage. Suggested-by: Eduard Zingerman <[email protected]> Signed-off-by: Alan Maguire <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-21selftests/bpf: Match tests against regular expressionCupertino Miranda3-6/+6
This patch changes a few tests to make use of regular expressions. Fixed tests otherwise fail when compiled with GCC. Signed-off-by: Cupertino Miranda <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Eduard Zingerman <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-21selftests/bpf: Support checks against a regular expressionCupertino Miranda1-3/+8
Add support for __regex and __regex_unpriv macros to check the test execution output against a regular expression. This is similar to __msg and __msg_unpriv, however those expect do substring matching. Signed-off-by: Cupertino Miranda <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Eduard Zingerman <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-21selftests/bpf: Tests with may_goto and jumps to the 1st insnAlexei Starovoitov1-0/+94
Add few tests with may_goto and jumps to the 1st insn. Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Eduard Zingerman <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-21bpf: Change bpf_session_cookie return value to __u64 *Jiri Olsa1-1/+1
This reverts [1] and changes return value for bpf_session_cookie in bpf selftests. Having long * might lead to problems on 32-bit architectures. Fixes: 2b8dd87332cd ("bpf: Make bpf_session_cookie() kfunc return long *") Suggested-by: Andrii Nakryiko <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-0/+41
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt.c 1e7962114c10 ("bnxt_en: Restore PTP tx_avail count in case of skb_pad() error") 165f87691a89 ("bnxt_en: add timestamping statistics support") No adjacent changes. Signed-off-by: Jakub Kicinski <[email protected]>
2024-06-17selftests/bpf: Add a few tests to coverYonghong Song1-0/+63
Add three unit tests in verifier_movsx.c to cover cases where missed var_off setting can cause unexpected verification success or failure. Signed-off-by: Yonghong Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-14selftests/bpf: Add tests for add_constAlexei Starovoitov2-3/+249
Improve arena based tests and add several C and asm tests with specific pattern. These tests would have failed without add_const verifier support. Also add several loop_inside_iter*() tests that are not related to add_const, but nice to have. Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-13selftests: bpf: add testmod kfunc for nullable paramsVadim Fedorenko1-0/+43
Add special test to be sure that only __nullable BTF params can be replaced by NULL. This patch adds fake kfuncs in bpf_testmod to properly test different params. Acked-by: Eduard Zingerman <[email protected]> Signed-off-by: Vadim Fedorenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-13selftests: bpf: crypto: adjust bench to use nullable IVVadim Fedorenko1-6/+4
The bench shows some improvements, around 4% faster on decrypt. Before: Benchmark 'crypto-decrypt' started. Iter 0 (325.719us): hits 5.105M/s ( 5.105M/prod), drops 0.000M/s, total operations 5.105M/s Iter 1 (-17.295us): hits 5.224M/s ( 5.224M/prod), drops 0.000M/s, total operations 5.224M/s Iter 2 ( 5.504us): hits 4.630M/s ( 4.630M/prod), drops 0.000M/s, total operations 4.630M/s Iter 3 ( 9.239us): hits 5.148M/s ( 5.148M/prod), drops 0.000M/s, total operations 5.148M/s Iter 4 ( 37.885us): hits 5.198M/s ( 5.198M/prod), drops 0.000M/s, total operations 5.198M/s Iter 5 (-53.282us): hits 5.167M/s ( 5.167M/prod), drops 0.000M/s, total operations 5.167M/s Iter 6 (-17.809us): hits 5.186M/s ( 5.186M/prod), drops 0.000M/s, total operations 5.186M/s Summary: hits 5.092 ± 0.228M/s ( 5.092M/prod), drops 0.000 ±0.000M/s, total operations 5.092 ± 0.228M/s After: Benchmark 'crypto-decrypt' started. Iter 0 (268.912us): hits 5.312M/s ( 5.312M/prod), drops 0.000M/s, total operations 5.312M/s Iter 1 (124.869us): hits 5.354M/s ( 5.354M/prod), drops 0.000M/s, total operations 5.354M/s Iter 2 (-36.801us): hits 5.334M/s ( 5.334M/prod), drops 0.000M/s, total operations 5.334M/s Iter 3 (254.628us): hits 5.334M/s ( 5.334M/prod), drops 0.000M/s, total operations 5.334M/s Iter 4 (-77.691us): hits 5.275M/s ( 5.275M/prod), drops 0.000M/s, total operations 5.275M/s Iter 5 (-164.510us): hits 5.313M/s ( 5.313M/prod), drops 0.000M/s, total operations 5.313M/s Iter 6 (-81.376us): hits 5.346M/s ( 5.346M/prod), drops 0.000M/s, total operations 5.346M/s Summary: hits 5.326 ± 0.029M/s ( 5.326M/prod), drops 0.000 ±0.000M/s, total operations 5.326 ± 0.029M/s Reviewed-by: Eduard Zingerman <[email protected]> Signed-off-by: Vadim Fedorenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-13selftests: bpf: crypto: use NULL instead of 0-sized dynptrVadim Fedorenko1-12/+4
Adjust selftests to use nullable option for state and IV arg. Reviewed-by: Eduard Zingerman <[email protected]> Signed-off-by: Vadim Fedorenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-13bpf: selftests: Do not use generated kfunc prototypes for arena progsDaniel Xu4-0/+4
When selftests are built with a new enough clang, the arena selftests opt-in to use LLVM address_space attribute annotations for arena pointers. These annotations are not emitted by kfunc prototype generation. This causes compilation errors when clang sees conflicting prototypes. Fix by opting arena selftests out of using generated kfunc prototypes. Fixes: 770abbb5a25a ("bpftool: Support dumping kfunc prototypes from BTF") Reported-by: kernel test robot <[email protected]> Closes: https://lore.kernel.org/r/[email protected]/ Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/fc59a617439ceea9ad8dfbb4786843c2169496ae.1718295425.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-13selftests/bpf: Add test coverage for reg_set_min_max handlingDaniel Borkmann1-0/+41
Add a test case for the jmp32/k fix to ensure selftests have coverage. Before fix: # ./vmtest.sh -- ./test_progs -t verifier_or_jmp32_k [...] ./test_progs -t verifier_or_jmp32_k tester_init:PASS:tester_log_buf 0 nsec process_subtest:PASS:obj_open_mem 0 nsec process_subtest:PASS:specs_alloc 0 nsec run_subtest:PASS:obj_open_mem 0 nsec run_subtest:FAIL:unexpected_load_success unexpected success: 0 #492/1 verifier_or_jmp32_k/or_jmp32_k: bit ops + branch on unknown value:FAIL #492 verifier_or_jmp32_k:FAIL Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED After fix: # ./vmtest.sh -- ./test_progs -t verifier_or_jmp32_k [...] ./test_progs -t verifier_or_jmp32_k #492/1 verifier_or_jmp32_k/or_jmp32_k: bit ops + branch on unknown value:OK #492 verifier_or_jmp32_k:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-13selftests/bpf: Validate CHECKSUM_COMPLETE optionVadim Fedorenko1-1/+10
Adjust skb program test to run with checksum validation. Signed-off-by: Vadim Fedorenko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-06-12bpf: selftests: xfrm: Opt out of using generated kfunc prototypesDaniel Xu1-0/+1
The xfrm_info selftest locally defines an aliased type such that folks with CONFIG_XFRM_INTERFACE=m/n configs can still build the selftests. See commit aa67961f3243 ("selftests/bpf: Allow building bpf tests with CONFIG_XFRM_INTERFACE=[m|n]"). Thus, it is simpler if this selftest opts out of using enerated kfunc prototypes. The preprocessor macro this commit uses will be introduced in the final commit. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/afe0bb1c50487f52542cdd5230c4aef9e36ce250.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: selftests: nf: Opt out of using generated kfunc prototypesDaniel Xu3-0/+3
The bpf-nf selftests play various games with aliased types such that folks with CONFIG_NF_CONNTRACK=m/n configs can still build the selftests. See commits: 1058b6a78db2 ("selftests/bpf: Do not fail build if CONFIG_NF_CONNTRACK=m/n") 92afc5329a5b ("selftests/bpf: Fix build errors if CONFIG_NF_CONNTRACK=m") Thus, it is simpler if these selftests opt out of using generated kfunc prototypes. The preprocessor macro this commit uses will be introduced in the final commit. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/044a5b10cb3abd0d71cb1c818ee0bfc4a2239332.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: treewide: Align kfunc signatures to prog point-of-viewDaniel Xu2-8/+8
Previously, kfunc declarations in bpf_kfuncs.h (and others) used "user facing" types for kfuncs prototypes while the actual kfunc definitions used "kernel facing" types. More specifically: bpf_dynptr vs bpf_dynptr_kern, __sk_buff vs sk_buff, and xdp_md vs xdp_buff. It wasn't an issue before, as the verifier allows aliased types. However, since we are now generating kfunc prototypes in vmlinux.h (in addition to keeping bpf_kfuncs.h around), this conflict creates compilation errors. Fix this conflict by using "user facing" types in kfunc definitions. This results in more casts, but otherwise has no additional runtime cost. Note, similar to 5b268d1ebcdc ("bpf: Have bpf_rdonly_cast() take a const pointer"), we also make kfuncs take const arguments where appropriate in order to make the kfunc more permissive. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/b58346a63a0e66bc9b7504da751b526b0b189a67.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: selftests: Namespace struct_opt callbacks in bpf_dctcpDaniel Xu1-18/+18
With generated kfunc prototypes, the existing callback names will conflict. Fix by namespacing with a bpf_ prefix. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/efe7aadad8a054e5aeeba94b1d2e4502eee09d7a.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: selftests: Fix bpf_map_sum_elem_count() kfunc prototypeDaniel Xu1-1/+1
The prototype in progs/map_percpu_stats.c is not in line with how the actual kfuncs are defined in kernel/bpf/map_iter.c. This causes compilation errors when kfunc prototypes are generated from BTF. Fix by aligning with actual kfunc definitions. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/0497e11a71472dcb71ada7c90ad691523ae87c3b.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: selftests: Fix bpf_cpumask_first_zero() kfunc prototypeDaniel Xu1-1/+1
The prototype in progs/nested_trust_common.h is not in line with how the actual kfuncs are defined in kernel/bpf/cpumask.c. This causes compilation errors when kfunc prototypes are generated from BTF. Fix by aligning with actual kfunc definitions. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/437936a4e554b02e04566dd6e3f0a5d08370cc8c.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12bpf: selftests: Fix fentry test kfunc prototypesDaniel Xu1-4/+3
Some prototypes in progs/get_func_ip_test.c were not in line with how the actual kfuncs are defined in net/bpf/test_run.c. This causes compilation errors when kfunc prototypes are generated from BTF. Fix by aligning with actual kfunc definitions. Also remove two unused prototypes. Signed-off-by: Daniel Xu <[email protected]> Link: https://lore.kernel.org/r/1e68870e7626b7b9c6420e65076b307fc404a2f0.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-12selftests/bpf: Add uretprobe syscall call from user space testJiri Olsa1-0/+17
Adding test to verify that when called from outside of the trampoline provided by kernel, the uretprobe syscall will cause calling process to receive SIGILL signal and the attached bpf program is not executed. Link: https://lore.kernel.org/all/[email protected]/ Acked-by: Andrii Nakryiko <[email protected]> Reviewed-by: Masami Hiramatsu (Google) <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
2024-06-12selftests/bpf: Add uretprobe syscall test for regs integrityJiri Olsa1-0/+15
Add uretprobe syscall test that compares register values before and after the uretprobe is hit. It also compares the register values seen from attached bpf program. Link: https://lore.kernel.org/all/[email protected]/ Acked-by: Andrii Nakryiko <[email protected]> Reviewed-by: Masami Hiramatsu (Google) <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
2024-06-10Merge tag 'for-netdev' of ↵Jakub Kicinski8-23/+462
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-06-06 We've added 54 non-merge commits during the last 10 day(s) which contain a total of 50 files changed, 1887 insertions(+), 527 deletions(-). The main changes are: 1) Add a user space notification mechanism via epoll when a struct_ops object is getting detached/unregistered, from Kui-Feng Lee. 2) Big batch of BPF selftest refactoring for sockmap and BPF congctl tests, from Geliang Tang. 3) Add BTF field (type and string fields, right now) iterator support to libbpf instead of using existing callback-based approaches, from Andrii Nakryiko. 4) Extend BPF selftests for the latter with a new btf_field_iter selftest, from Alan Maguire. 5) Add new kfuncs for a generic, open-coded bits iterator, from Yafang Shao. 6) Fix BPF selftests' kallsyms_find() helper under kernels configured with CONFIG_LTO_CLANG_THIN, from Yonghong Song. 7) Remove a bunch of unused structs in BPF selftests, from David Alan Gilbert. 8) Convert test_sockmap section names into names understood by libbpf so it can deduce program type and attach type, from Jakub Sitnicki. 9) Extend libbpf with the ability to configure log verbosity via LIBBPF_LOG_LEVEL environment variable, from Mykyta Yatsenko. 10) Fix BPF selftests with regards to bpf_cookie and find_vma flakiness in nested VMs, from Song Liu. 11) Extend riscv32/64 JITs to introduce shift/add helpers to generate Zba optimization, from Xiao Wang. 12) Enable BPF programs to declare arrays and struct fields with kptr, bpf_rb_root, and bpf_list_head, from Kui-Feng Lee. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (54 commits) selftests/bpf: Drop useless arguments of do_test in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp_fallback in bpf_tcp_ca selftests/bpf: Add start_test helper in bpf_tcp_ca selftests/bpf: Use connect_to_fd_opts in do_test in bpf_tcp_ca libbpf: Auto-attach struct_ops BPF maps in BPF skeleton selftests/bpf: Add btf_field_iter selftests selftests/bpf: Fix send_signal test with nested CONFIG_PARAVIRT libbpf: Remove callback-based type/string BTF field visitor helpers bpftool: Use BTF field iterator in btfgen libbpf: Make use of BTF field iterator in BTF handling code libbpf: Make use of BTF field iterator in BPF linker code libbpf: Add BTF field iterator selftests/bpf: Ignore .llvm.<hash> suffix in kallsyms_find() selftests/bpf: Fix bpf_cookie and find_vma in nested VM selftests/bpf: Test global bpf_list_head arrays. selftests/bpf: Test global bpf_rb_root arrays and fields in nested struct types. selftests/bpf: Test kptr arrays and kptrs in nested struct fields. bpf: limit the number of levels of a nested struct type. bpf: look into the types of the fields of a struct type recursively. ... ==================== Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
2024-06-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-1/+1
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: drivers/net/ethernet/pensando/ionic/ionic_txrx.c d9c04209990b ("ionic: Mark error paths in the data path as unlikely") 491aee894a08 ("ionic: fix kernel panic in XDP_TX action") net/ipv6/ip6_fib.c b4cb4a1391dc ("net: use unrcu_pointer() helper") b01e1c030770 ("ipv6: fix possible race in __fib6_drop_pcpu_from()") Signed-off-by: Jakub Kicinski <[email protected]>
2024-06-03selftests/bpf: Test global bpf_list_head arrays.Kui-Feng Lee1-0/+42
Make sure global arrays of bpf_list_heads and fields of bpf_list_heads in nested struct types work correctly. Acked-by: Eduard Zingerman <[email protected]> Signed-off-by: Kui-Feng Lee <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-03selftests/bpf: Test global bpf_rb_root arrays and fields in nested struct types.Kui-Feng Lee1-0/+77
Make sure global arrays of bpf_rb_root and fields of bpf_rb_root in nested struct types work correctly. Signed-off-by: Kui-Feng Lee <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-03selftests/bpf: Test kptr arrays and kptrs in nested struct fields.Kui-Feng Lee1-0/+171
Make sure that BPF programs can declare global kptr arrays and kptr fields in struct types that is the type of a global variable or the type of a nested descendant field in a global variable. An array with only one element is special case, that it treats the element like a non-array kptr field. Nested arrays are also tested to ensure they are handled properly. Acked-by: Eduard Zingerman <[email protected]> Signed-off-by: Kui-Feng Lee <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-06-03selftests/bpf: Drop duplicate bpf_map_lookup_elem in test_sockmapGeliang Tang1-3/+0
bpf_map_lookup_elem is invoked in bpf_prog3() already, no need to invoke it again. This patch drops it. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Tested-by: Jakub Sitnicki <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/ea8458462b876ee445173e3effb535fd126137ed.1716446893.git.tanggeliang@kylinos.cn
2024-06-03selftests/bpf: Remove unused 'key_t' structsDr. David Alan Gilbert2-12/+0
'key_t' is unused in a couple of files since the original commit 60dd49ea6539 ("selftests/bpf: Add test for bpf array map iterators"). Remove it. Signed-off-by: Dr. David Alan Gilbert <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-05-31selftests/bpf: fix inet_csk_accept prototype in test_sk_storage_tracing.cAndrii Nakryiko1-1/+1
Recent kernel change ([0]) changed inet_csk_accept() prototype. Adapt progs/test_sk_storage_tracing.c to take that into account. [0] 92ef0fd55ac8 ("net: change proto and proto_ops accept type") Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-05-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski3-5/+267
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/ti/icssg/icssg_classifier.c abd5576b9c57 ("net: ti: icssg-prueth: Add support for ICSSG switch firmware") 56a5cf538c3f ("net: ti: icssg-prueth: Fix start counter for ft1 filter") https://lore.kernel.org/all/[email protected]/ No other adjacent changes. Signed-off-by: Jakub Kicinski <[email protected]>
2024-05-30selftests/bpf: test struct_ops with epollKui-Feng Lee1-0/+10
Verify whether a user space program is informed through epoll with EPOLLHUP when a struct_ops object is detached. The BPF code in selftests/bpf/progs/struct_ops_module.c has become complex. Therefore, struct_ops_detach.c has been added to segregate the BPF code for detachment tests from the BPF code for other tests based on the recommendation of Andrii Nakryiko. Suggested-by: Andrii Nakryiko <[email protected]> Signed-off-by: Kui-Feng Lee <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
2024-05-30selftests/bpf: use section names understood by libbpf in test_sockmapJakub Sitnicki1-8/+9
libbpf can deduce program type and attach type from the ELF section name. We don't need to pass it out-of-band if we switch to libbpf convention [1]. [1] https://docs.kernel.org/bpf/libbpf/program_types.html Signed-off-by: Jakub Sitnicki <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-05-29selftests/bpf: Add selftest for bits iterYafang Shao1-0/+153
Add test cases for the bits iter: - Positive cases - Bit mask representing a single word (8-byte unit) - Bit mask representing data spanning more than one word - The index of the set bit - Nagative cases - bpf_iter_bits_destroy() is required after calling bpf_iter_bits_new() - bpf_iter_bits_destroy() can only destroy an initialized iter - bpf_iter_bits_next() must use an initialized iter - Bit mask representing zero words - Bit mask representing fewer words than expected - Case for ENOMEM - Case for NULL pointer Signed-off-by: Yafang Shao <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-05-27selftests/bpf: Cover verifier checks for mutating sockmap/sockhashJakub Sitnicki1-0/+187
Verifier enforces that only certain program types can mutate sock{map,hash} maps, that is update it or delete from it. Add test coverage for these checks so we don't regress. Signed-off-by: Jakub Sitnicki <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2024-05-25selftests/bpf: Add netkit test for pkt_typeDaniel Borkmann1-1/+34
Add a test case to assert that the skb->pkt_type which was set from the BPF program is retained from the netkit xmit side to the peer's device at tcx ingress location. # ./vmtest.sh -- ./test_progs -t netkit [...] ./test_progs -t netkit [ 1.140780] bpf_testmod: loading out-of-tree module taints kernel. [ 1.141127] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel [ 1.284601] tsc: Refined TSC clocksource calibration: 3408.006 MHz [ 1.286672] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fd9b189d, max_idle_ns: 440795225691 ns [ 1.290384] clocksource: Switched to clocksource tsc #345 tc_netkit_basic:OK #346 tc_netkit_device:OK #347 tc_netkit_multi_links:OK #348 tc_netkit_multi_opts:OK #349 tc_netkit_neigh_links:OK #350 tc_netkit_pkt_type:OK Summary: 6/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-05-25selftests/bpf: extend multi-uprobe tests with USDTsAndrii Nakryiko1-2/+31
Validate libbpf's USDT-over-multi-uprobe logic by adding USDTs to existing multi-uprobe tests. This checks correct libbpf fallback to singular uprobes (when run on older kernels with buggy PID filtering). We reuse already established child process and child thread testing infrastructure, so additions are minimal. These test fail on either older kernels or older version of libbpf that doesn't detect PID filtering problems. Acked-by: Jiri Olsa <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-05-25selftests/bpf: extend multi-uprobe tests with child thread caseAndrii Nakryiko1-2/+15
Extend existing multi-uprobe tests to test that PID filtering works correctly. We already have child *process* tests, but we need also child *thread* tests. This patch adds spawn_thread() helper to start child thread, wait for it to be ready, and then instruct it to trigger desired uprobes. Additionally, we extend BPF-side code to track thread ID, not just process ID. Also we detect whether extraneous triggerings with unexpected process IDs happened, and validate that none of that happened in practice. These changes prove that fixed PID filtering logic for multi-uprobe works as expected. These tests fail on old kernels. Signed-off-by: Andrii Nakryiko <[email protected]> Acked-by: Jiri Olsa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexei Starovoitov <[email protected]>
2024-05-23selftests/bpf: Handle forwarding of UDP CLOCK_TAI packetsAbhishek Chauhan1-22/+17
With changes in the design to forward CLOCK_TAI in the skbuff framework, existing selftest framework needs modification to handle forwarding of UDP packets with CLOCK_TAI as clockid. Signed-off-by: Abhishek Chauhan <[email protected]> Reviewed-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
2024-05-22selftests/bpf: Update tests for new ct zone opts for nf_conntrack kfuncsBrad Cowie1-0/+108
Add test for allocating and looking up ct entry in a non-default ct zone with kfuncs bpf_{xdp,skb}_ct_alloc and bpf_{xdp,skb}_ct_lookup. Add negative tests for looking up ct entry in a different ct zone to where it was allocated and with a different direction. Update reserved test for old struct definition to test for ct_zone_id being set when opts size isn't NF_BPF_CT_OPTS_SZ (16). Signed-off-by: Brad Cowie <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Martin KaFai Lau <[email protected]>
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