| commit | de15ea6933606c3d11c5040535b8d5c9fb1f0c7f | [log] [tgz] |
|---|---|---|
| author | Connor O'Brien <connoro@google.com> | Tue Dec 21 14:19:47 2021 -0800 |
| committer | Connor O'Brien <connoro@google.com> | Wed Jan 05 16:24:13 2022 -0800 |
| tree | 8c0537edb9dc3872ee13281e2a09e98280f24a43 | |
| parent | c72a94951d15a2f87c287f67db79f345dcbb7271 [diff] | |
| parent | 9fab7c81ecd462ce6aa1eabd24b230f0fc6a14c7 [diff] |
Merge branch 'upstream-master' into 'master'
* upstream-master:
ci: Add a step to patch kernel with temporary fixes
sync: latest libbpf changes from kernel
libbpf: Rework feature-probing APIs
libbpf: Avoid reading past ELF data section end when copying license
ci: add LIRC kernel config
vmtest: blacklist bpf_loop and get_func_args_test for s390x
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Mark bpf_object__find_program_by_title API deprecated.
libbpf: Auto-bump RLIMIT_MEMLOCK if kernel needs it for BPF
libbpf: Add sane strncpy alternative and use it internally
libbpf: Fix potential uninit memory read
libbpf: Add doc comments for bpf_program__(un)pin()
bpf: Add get_func_[arg|ret|arg_cnt] helpers
libbpf: Don't validate TYPE_ID relo's original imm value
bpf: Add bpf_strncmp helper
libbpf: Fix gen_loader assumption on number of programs.
Bonding: add arp_missed_max option
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
tools: sync uapi/linux/if_link.h header
libbpf: Add "bool skipped" to struct bpf_map
libbpf: Fix typo in btf__dedup@LIBBPF_0.0.2 definition
libbpf: Deprecate bpf_object__load_xattr()
libbpf: Add per-program log buffer setter and getter
libbpf: Preserve kernel error code and remove kprobe prog type guessing
libbpf: Improve logging around BPF program loading
libbpf: Allow passing user log setting through bpf_object_open_opts
libbpf: Allow passing preallocated log_buf when loading BTF into kernel
libbpf: Add OPTS-based bpf_btf_load() API
libbpf: Fix bpf_prog_load() log_buf logic for log_level 0
libbpf: Add doc comments in libbpf.h
libbpf: Fix trivial typo
libbpf: Reduce bpf_core_apply_relo_insn() stack usage.
libbpf: Deprecate bpf_prog_load_xattr() API
libbpf: Add API to get/set log_level at per-program level
libbpf: Use __u32 fields in bpf_map_create_opts
libbpf: Clean gen_loader's attach kind.
libbpf: Support init of inner maps in light skeleton.
libbpf: Use CO-RE in the kernel in light skeleton.
libbpf: Cleanup struct bpf_core_cand.
bpf: Pass a set of bpf_core_relo-s to prog_load command.
bpf: Define enum bpf_core_relo_kind as uapi.
bpf: Prepare relo_core.c for kernel duty.
libbpf: Replace btf__type_by_id() with btf_type_by_id().
libbpf: Avoid reload of imm for weak, unresolved, repeating ksym
libbpf: Avoid double stores for success/failure case of ksym relocations
bpf: Add bpf_loop helper
libbpf: Remove duplicate assignments
sync: improve patch application process by using patch command
Migrate vmtest to modular actions in libbpf/ci
ci: upgrade s390x runner to v2.285.0
ci: fix test on /exitstatus existence and size
ci: whitelist legacy_printk tests on 4.9 and 5.5
ci: add folding markers to avoid getting output out of sections
ci: carry on after selftest failure and report test group results
ci: change VM's /exitstatus format to prepare it for several results
ci: create helpers for formatting errors and notices
sync: latest libbpf changes from kernel
libbpf: Silence uninitialized warning/error in btf_dump_dump_type_data
libbpf: Support static initialization of BPF_MAP_TYPE_PROG_ARRAY
bpf, mips: Fix build errors about __NR_bpf undeclared
sync: try harder when git am -3 fails
sync: latest libbpf changes from kernel
libbpf: Fix using invalidated memory in bpf_linker
libbpf: Fix glob_syms memory leak in bpf_linker
libbpf: Don't call libc APIs with NULL pointers
libbpf: Fix potential misaligned memory access in btf_ext__new()
libbpf: Prevent deprecation warnings in xsk.c
libbpf: Use bpf_map_create() consistently internally
libbpf: Unify low-level map creation APIs w/ new bpf_map_create()
libbpf: Load global data maps lazily on legacy kernels
sync: latest libbpf changes from kernel
libbpf: Change bpf_program__set_extra_flags to bpf_program__set_flags
libbpf: Accommodate DWARF/compiler bug with duplicated structs
libbpf: Add runtime APIs to query libbpf version
bpf, docs: Fix ordering of bpf documentation
ci: create summary for tests and account for bpftool checks result
ci: pass shutdown fold description to fold command
Makefile: enforce gnu89 standard
Makefile: don't hide relevant parts of file path
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Perform map fd cleanup for gen_loader in case of error
bpf: Change value of MAX_TAIL_CALL_CNT from 32 to 33
libbpf: Fix a couple of missed btf_type_tag handling in btf.c
ci: add s390x vmtest
vmtest: use libguestfs for disk image manipulations
vmtest: add s390x blacklist
vmtest: tweak qemu invocation for s390x
vmtest: add s390x image
vmtest: add s390x config
vmtest: add debootstrap-based mkrootfs script
vmtest: do not install lld
vmtest: use python3-docutils instead of python-docutils
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Support BTF_KIND_TYPE_TAG
bpf: Support BTF_KIND_TYPE_TAG for btf_type_tag attributes
libbpf: Make perf_buffer__new() use OPTS-based interface
libbpf: Ensure btf_dump__new() and btf_dump_opts are future-proof
libbpf: Turn btf_dedup_opts into OPTS-based struct
libbpf: Add ability to get/set per-program load flags
bpf: Add ingress_ifindex to bpf_sk_lookup
bpf: Introduce helper bpf_find_vma
libbpf: Free up resources used by inner map definition
libbpf: Remove deprecation attribute from struct bpf_prog_prep_result
libbpf: Stop using to-be-deprecated APIs
libbpf: Remove internal use of deprecated bpf_prog_load() variants
libbpf: Unify low-level BPF_PROG_LOAD APIs into bpf_prog_load()
libbpf: Pass number of prog load attempts explicitly
libbpf: Rename DECLARE_LIBBPF_OPTS into LIBBPF_OPTS
sync: latest libbpf changes from kernel
libbpf: Fix lookup_and_delete_elem_flags error reporting
libbpf: Fix non-C89 loop variable declaration in gen_loader.c
libbpf: Deprecate bpf_program__load() API
libbpf: Improve ELF relo sanitization
libbpf: Fix section counting logic
libbpf: Validate that .BTF and .BTF.ext sections contain data
libbpf: Improve sanity checking during BTF fix up
libbpf: Detect corrupted ELF symbols section
sync: latest libbpf changes from kernel
libbpf: Deprecate bpf_program__get_prog_info_linear
libbpf: Deprecate AF_XDP support
bpf: Add alignment padding for "map_extra" + consolidate holes
include: add BPF_ALU32_IMM macro implementation
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h
libbpf: Use O_CLOEXEC uniformly when opening fds
libbpf: Ensure that BPF syscall fds are never 0, 1, or 2
libbpf: Add weak ksym support to gen_loader
libbpf: Add typeless ksym support to gen_loader
bpf: Add bpf_kallsyms_lookup_name helper
libbpf: Add "map_extra" as a per-map-type extra flag
bpf: Add bloom filter map implementation
libbpf: Deprecate bpf_objects_list
libbpf: Use __BYTE_ORDER__
libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED()
libbpf: Deprecate ambiguously-named bpf_program__size() API
libbpf: Deprecate multi-instance bpf_program APIs
libbpf: Add ability to fetch bpf_program's underlying instructions
libbpf: Fix off-by-one bug in bpf_core_apply_relo()
sync: remove redundant test on $BPF_BRANCH
sync: fix comment for commit_signature() (subject instead of hash)
README: add links to BPF CO-RE reference guide
[ci] turn on CIFuzz
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Fix BTF header parsing checks
libbpf: Fix overflow in BTF sanity checks
libbpf: Use func name when pinning programs with LIBBPF_STRICT_SEC_NAME
libbpf: Add btf__type_cnt() and btf__raw_data() APIs
libbpf: Fix memory leak in btf__dedup()
libbpf: Fix the use of aligned attribute
libbpf: Simplify look up by name of internal maps
libbpf: Support multiple .rodata.* and .data.* BPF maps
libbpf: Remove assumptions about uniqueness of .rodata/.data/.bss maps
libbpf: Use Elf64-specific types explicitly for dealing with ELF
libbpf: Extract ELF processing state into separate struct
libbpf: Deprecate btf__finalize_data() and move it into libbpf.c
bpf: Add verified_insns to bpf_prog_info and fdinfo
libbpf: Fix ptr_is_aligned() usages
bpf: Add bpf_skc_to_unix_sock() helper
libbpf: Fix dumping non-aligned __int128
libbpf: Fix dumping big-endian bitfields
libbpf: Migrate internal use of bpf_program__get_prog_info_linear
bpf: Rename BTF_KIND_TAG to BTF_KIND_DECL_TAG
README: add OSS-Fuzz badge
[coverity] skip forks
sync: latest libbpf changes from kernel
libbpf: Support detecting and attaching of writable tracepoint program
sync: latest libbpf changes from kernel
libbpf: Fix memory leak in strset
libbpf: Fix segfault in light skeleton for objects without BTF
libbpf: Deprecate bpf_{map,program}__{prev,next} APIs since v0.7
libbpf: Deprecate bpf_object__unload() API since v0.6
libbpf: Add API documentation convention guidelines
libbpf: Add API that copies all BTF types from one BTF object to another
libbpf: Update gen_loader to emit BTF_KIND_FUNC relocations
libbpf: Resolve invalid weak kfunc calls with imm = 0, off = 0
libbpf: Support kernel module function calls
libbpf: Support uniform BTF-defined key/value specification across all BPF maps
libbpf: Fix skel_internal.h to set errno on loader retval < 0
libbpf: Properly ignore STT_SECTION symbols in legacy map definitions
libbpf: Make gen_loader data aligned.
Remove caching of pahole test result
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Fix segfault in static linker for objects without BTF
selftests/bpf: Switch sk_lookup selftests to strict SEC("sk_lookup") use
libbpf: Add opt-in strict BPF program section name handling logic
libbpf: Complete SEC() table unification for BPF_APROG_SEC/BPF_EAPROG_SEC
libbpf: Refactor ELF section handler definitions
libbpf: Reduce reliance of attach_fns on sec_def internals
libbpf: Refactor internal sec_def handling to enable pluggability
libbpf: Add "tc" SEC_DEF which is a better name for "classifier"
libbpf: Ignore STT_SECTION symbols in 'maps' section
libbpf: Add legacy uprobe attaching support
libbpf: Refactor and simplify legacy kprobe code
libbpf: Fix memory leak in legacy kprobe attach logic
libbpf: Add doc comments in libbpf.h
bpf: Clarify data_len param in bpf_snprintf and bpf_seq_printf comments
libbpf: Use static const fmt string in __bpf_printk
libbpf: Modify bpf_printk to choose helper based on arg count
bpf: Add bpf_trace_vprintk helper
libbpf: Constify all high-level program attach APIs
libbpf: Schedule open_opts.attach_prog_fd deprecation since v0.7
libbpf: Allow skipping attach_func_name in bpf_program__set_attach_target()
libbpf: Deprecated bpf_object_open_opts.relaxed_core_relocs
libbpf: Use pre-setup sec_def in libbpf_find_attach_btf_id()
bpf: Update bpf_get_smp_processor_id() documentation
ci: use -a/-d with exact string match for black/white-listing
vmtest: temporarily blacklist spammy selftests
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Add sphinx code documentation comments
libbpf: Add support for BTF_KIND_TAG
libbpf: Rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag
bpf: Support for new btf kind BTF_KIND_TAG
btf: Change BTF_KIND_* macros to enums
libbpf: Minimize explicit iterator of section definition array
libbpf: Simplify BPF program auto-attach code
libbpf: Ensure BPF prog types are set before relocations
libbpf: Introduce legacy kprobe events support
libbpf: Make libbpf_version.h non-auto-generated
bpf: Introduce helper bpf_get_branch_snapshot
bpf: Add hardware timestamp field to __sk_buff
libbpf: Add LIBBPF_DEPRECATED_SINCE macro for scheduling API deprecations
ipv6: add IFLA_INET6_RA_MTU to expose mtu value
makefile: add libbpf_version.h to the list of installed headers
ci: use test_progs -l option to generate the list of whitelisted tests
Add enum to be displayed in documentation
libbpf: Fix build with latest gcc/binutils with LTO
libbpf: Change bpf_object_skeleton data field to const pointer
libbpf: Don't crash on object files with no symbol tables
ci: blacklist few new selftests for 5.5
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
bpf: Add bpf_task_pt_regs() helper
bpf: Migrate cgroup_bpf to internal cgroup_bpf_attach_type enum
ci: don't hang on kernel crashes in qemu
sync: latest libbpf changes from kernel
libbpf: Rename libbpf documentation index file
Fix path to Doxygen source code input
ci: blacklist new selftests on 5.5
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: Add uprobe ref counter offset support for USDT semaphores
libbpf: Add bpf_cookie to perf_event, kprobe, uprobe, and tp attach APIs
libbpf: Add bpf_cookie support to bpf_link_create() API
libbpf: Use BPF perf link when supported by kernel
libbpf: Remove unused bpf_link's destroy operation, but add dealloc
bpf: Add bpf_get_attach_cookie() BPF helper to access bpf_cookie value
bpf: Allow to specify user-provided bpf_cookie for BPF perf links
bpf: Implement minimal BPF perf link
libbpf: Support weak typed ksyms.
libbpf, doc: Eliminate warnings in libbpf_naming_convention
bonding: add new option lacp_active
sync: fix up docs sync path mapping
docs: initial set of libbpf docs
docs: reconfigure libbpf documentation syncing
ci: run script to test bpftool types/options sync
Make CI tests compatible with vanilla kernel tree
ci: restore all temporary disabled tests
Add a test step to produce a minimal binary using libbpf.
makefile: fix missing object for static compilation
ci: make CI build log less verbose
ci: blacklist newly migrated netcnt selftest
sync: latest libbpf changes from kernel
libbpf: Do not close un-owned FD 0 on errors
libbpf: Fix probe for BPF_PROG_TYPE_CGROUP_SOCKOPT
libbpf: Add btf__load_vmlinux_btf/btf__load_module_btf
libbpf: Add split BTF support for btf__load_from_kernel_by_id()
libbpf: Rename btf__get_from_id() as btf__load_from_kernel_by_id()
libbpf: Rename btf__load() as btf__load_into_kernel()
libbpf: Return non-null error on failures in libbpf_find_prog_btf_id()
libbpf: Fix race when pinning maps in parallel
libbpf: Fix comment typo
libbpf: Split CO-RE logic into relo_core.c.
libbpf: Move CO-RE types into relo_core.h.
libbpf: Split bpf_core_apply_relo() into bpf_program independent helper.
libbpf: Cleanup the layering between CORE and bpf_program.
libbpf: Add bpf_map__pin_path function
libbpf: Export bpf_program__attach_kprobe_opts function
libbpf: Allow decimal offset for kprobes
libbpf: Fix func leak in attach_kprobe
Fix text grouping issue on github actions
ci: bump nightly Clang/LLVM version to 14
ci: improve CI UX a little by setting names a hiding debug
README: remove Travis CI build badge
ci: fix log folding in Github Actions
ci: add cancel-in-progress behavior for main test CI workflow
ci: add Github Actions status badge
sync: latest libbpf changes from kernel
libbpf: Propagate errors when retrieving enum value for typed data display
libbpf: Avoid use of __int128 in typed dump display
README: State the source origin more prominently.
Makefile: Default LIBSUBDIR to lib64 on 64bit architectures.
sync: latest libbpf changes from kernel
libbpf: Fix removal of inner map in bpf_object__create_map
libbpf: Btf typed dump does not need to allocate dump data
libbpf: Fix compilation errors on ppc64le for btf dump typed data
libbpf: Clarify/fix unaligned data issues for btf typed dump
Update README.md
Update README.md
Run apt-get update as a first step for GH actions
vmtest: blacklist 5.5 selftests
ci: temporary work-around to get green CI builds back
ci: disable -Wstringop-truncation for GCC10 configurations as well
vmtest: regenerate latest vmlinux.h
sync: latest libbpf changes from kernel
sync: auto-generate latest BPF helpers
libbpf: BTF dumper support for typed data
libbpf: Fix the possible memory leak on error
libbpf: Introduce 'btf_custom_path' to 'bpf_obj_open_opts'
libbpf: Allow specification of "kprobe/function+offset"
libbpf: Add bpf_program__attach_kprobe_opts function
bpf: Add bpf_get_func_ip helper for kprobe programs
bpf: Add bpf_get_func_ip helper for tracing programs
bpf: Introduce bpf timers.
bpf: Fix a typo of reuseport map in bpf.h.
bpf: Sync tools/include/uapi/linux/bpf.h
libbpf: Fix reuse of pinned map on older kernel
libbpf: Restore errno return for functions that were already returning it
libbpf: Switch to void * casting in netlink helpers
libbpf: Add request buffer type for netlink messages
libbpf: Add extra BPF_PROG_TYPE check to bpf_object__probe_loading
include: initial sync of pkt_cls.h and pkt_sched.h
sync uapi headers linux/pkt_cls.h and linux/pkt_sched.h
create ondemand vmtest workflow
Bug: 203823368
Test: m libbpf
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: Ia9a76c029d9f528aeee612a3587887a314cd3e22
This is a mirror of bpf-next Linux source tree's tools/lib/bpf directory plus its supporting header files.
All the gory details of syncing can be found in scripts/sync-kernel.sh script.
Some header files in this repo (include/linux/*.h) are reduced versions of their counterpart files at bpf-next's tools/include/linux/*.h to make compilation successful.
Please check out libbpf-bootstrap and the companion blog post for the examples of building BPF applications with libbpf. libbpf-tools are also a good source of the real-world libbpf-based tracing tools.
See also “BPF CO-RE reference guide” for the coverage of practical aspects of building BPF CO-RE applications and “BPF CO-RE” for general introduction into BPF portability issues and BPF CO-RE origins.
All general BPF questions, including kernel functionality, libbpf APIs and their application, should be sent to bpf@vger.kernel.org mailing list. You can subscribe to it here and search its archive here. Please search the archive before asking new questions. It very well might be that this was already addressed or answered before.
bpf@vger.kernel.org is monitored by many more people and they will happily try to help you with whatever issue you have. This repository's PRs and issues should be opened only for dealing with issues pertaining to specific way this libbpf mirror repo is set up and organized.
libelf is an internal dependency of libbpf and thus it is required to link against and must be installed on the system for applications to work. pkg-config is used by default to find libelf, and the program called can be overridden with PKG_CONFIG.
If using pkg-config at build time is not desired, it can be disabled by setting NO_PKG_CONFIG=1 when calling make.
To build both static libbpf.a and shared libbpf.so:
$ cd src
$ make
To build only static libbpf.a library in directory build/ and install them together with libbpf headers in a staging directory root/:
$ cd src $ mkdir build root $ BUILD_STATIC_ONLY=y OBJDIR=build DESTDIR=root make install
To build both static libbpf.a and shared libbpf.so against a custom libelf dependency installed in /build/root/ and install them together with libbpf headers in a build directory /build/root/:
$ cd src $ PKG_CONFIG_PATH=/build/root/lib64/pkgconfig DESTDIR=/build/root make install
Distributions packaging libbpf from this mirror:
Benefits of packaging from the mirror over packaging from kernel sources:
Package dependencies of libbpf, package names may vary across distros:
Libbpf supports building BPF CO-RE-enabled applications, which, in contrast to BCC, do not require Clang/LLVM runtime being deployed to target servers and doesn't rely on kernel-devel headers being available.
It does rely on kernel to be built with BTF type information, though. Some major Linux distributions come with kernel BTF already built in:
If your kernel doesn‘t come with BTF built-in, you’ll need to build custom kernel. You'll need:
pahole 1.16+ tool (part of dwarves package), which performs DWARF to BTF conversion;CONFIG_DEBUG_INFO_BTF=y option;/sys/kernel/btf/vmlinux file:$ ls -la /sys/kernel/btf/vmlinux -r--r--r--. 1 root root 3541561 Jun 2 18:16 /sys/kernel/btf/vmlinux
To develop and build BPF programs, you'll need Clang/LLVM 10+. The following distributions have Clang/LLVM 10+ packaged by default:
Otherwise, please make sure to update it on your system.
The following resources are useful to understand what BPF CO-RE is and how to use it:
This work is dual-licensed under BSD 2-clause license and GNU LGPL v2.1 license. You can choose between one of them if you use this work.
SPDX-License-Identifier: BSD-2-Clause OR LGPL-2.1