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https://wiki.wireshark.org/CaptureSetup/CaptureSupport
BSD (including macOS) On various BSDs, you need to have BPF support enabled in your kernel. In macOS, and in newer versions of at least some free-software BSDs, it's enabled by default. In other BSDs, see the documentation for your system for information on how to enable BPF support.
https://forums.unraid.net/topic/81475-enable-bpf-remaining-parameters-in-kernel-config-allow-extended-usage-of-kernel-application-tracing/
Jul 04, 2019 · This will expose raw tracing functionality that has been added to the kernel from 4.9, in a production safe implementation, that will allow the use of detailed application & kernel tracing tools such as those in bcc (BPF Compiler Collection) suite which is for diagnosing and troubleshooting performance and application code issues.
https://source.android.com/devices/architecture/kernel/bpf
These programs can be hooked to probes or events in the kernel, collect useful statistics, and store the results in rich data structures. A program is loaded into the kernel using the bpf(2) syscall and is provided by the user as a binary blob of eBPF machine instructions. The Android build system has support for compiling C programs to eBPF using simple build file syntax described later.
https://blogs.oracle.com/linux/notes-on-bpf-4
Jan 17, 2019 · Finally, to build BPF programs, you will need an up-to-date kernel development package to compile against, e.g. the UEK5 kernel-uek-devel or kernel-uek-headers package, since the headers shipped with UEK5 in the kernel-headers do not contain the 4.14 definitions for the BPF syscall etc.
https://blogs.oracle.com/linux/notes-on-bpf-5
Jan 22, 2019 · Notes on BPF (5) - BPF bytecodes and the BPF verifier. Oracle Linux kernel developer Alan Maguire presents this six-part series on BPF, wherein he presents an in depth look at the kernel's "Berkeley Packet Filter" -- a useful and extensible kernel function for much more than packet filtering.
https://www.kernel.org/doc/html/latest/userspace-api/seccomp_filter.html
Now takes an additional argument which specifies a new filter using a BPF program. The BPF program will be executed over struct seccomp_data reflecting the system call number, arguments, and other metadata. The BPF program must then return one of the acceptable values to inform the kernel which action should be taken.
https://github.com/draios/sysdig/wiki/eBPF
The eBPF probe is an ELF object that contains a series of eBPF programs that are loaded inside the kernel using the bpf() system call, and subsequently attached to relevant tracepoints, such as system call events, context switches, page faults, ...
https://opensource.com/article/17/9/intro-ebpf
eBPF tracing: User space to kernel space flow. BPF system call and BPF maps are two useful entities that can interact with the eBPF kernel. BPF system call. A user can interact with the eBPF kernel using a bpf() system call whose prototype is: int bpf (int cmd, union bpf_attr * attr, unsigned int size);
https://github.com/raspberrypi/linux/issues/3294
Oct 20, 2019 · A couple of weeks ago VRF support has been enabled in the raspbian kernel via ae5fd2e, and that's truly awesome. Many applications may use VRFs now, but sometimes there is no other way for running an vrf-unaware application than using the 'ip vrf exec' command. 'ip vrf exec' lauches an application and makes sure that said application is bound to a VRF, and that it uses the vrf …
http://mac-os-forge.2317878.n4.nabble.com/Wireshark-Capture-support-td119702.html
On various BSDs, you need to have BPF support enabled in your kernel. In Mac OS X, and in newer versions of at least some free-software BSDs, it's enabled by default. In other BSDs, see the documentation for your system for information on how to enable BPF support.
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