WebOct 20, 2024 · There are multiple ways to write eBPF programs. The most popular eBPF front ends for monitoring programs are currently bcc (eBPF compiler collection), bpftrace and libbpf. PCP includes an agent for each front end, so you can use any of these front ends to gather metrics from eBPF programs. bcc PMDA WebBPF_MAP_DELETE_ELEM The BPF_MAP_DELETE_ELEM command deletes the element whose key is key from the map referred to by the file descriptor fd. int …
eBPF maps — Prototype Kernel 0.0.1 documentation - Read the …
WebJan 8, 2024 · If you're adding a sample I'd recommend including bpf_load.h so you can just call load_bpf_file () on your BPF program. For example, in samples/bpf/sockex1_user.c we take the filename of our program (sockex1) and load sockex1_kern.o ; the associated BPF program. Then we open a raw socket to loopback (lo) and attach the program there: WebMar 30, 2024 · To follow the example here, first go to the libbpf repository and follow the instructions to install it. The ring buffer support was added in v0.0.9. Also, make sure to have a >= 5.8 Kernel. Here is how the BPF program: The program itself is very simple, we attach to the tracepoint that gets hit every time an execve syscall is done. ina cam follower
tc-bpf(8) - Linux manual page - Michael Kerrisk
WebPractical BPF examples. This git repository contains a diverse set of practical BPF examples that solve (or demonstrate) a specific use-case using BPF. It is meant to ease … WebJan 17, 2024 · This is what you use in a user space application that would load and manage BPF programs and maps, say bpftool for example. From kernel space, i.e. from a BPF program, things work differently and access is done with one of the BPF “helpers” such as bpf_map_update_elem (struct bpf_map *map, const void *key, const void *value, u64 … WebJul 16, 2024 · But you can try adding it manually, in your BPF program file: static int (*bpf_trace_printk) (const char *fmt, int fmt_size, ...) = (void *) BPF_FUNC_trace_printk; (this will declare the function based on the BPF_FUNC_trace_printk enum member defined in linux/bpf.h, included from bpf/bpf.h I think). – Qeole Jul 16, 2024 at 13:57 ina cathrine mørken