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Define the BPF program names in the user space component. The strings corresponding to the BPF program names were before inserted in several places, including in multiple string comparison, which is error prone and could leave to subtle errors if the program names are changed and not updated correctly in all places. With the program name string being defined, they only have to be changed in a single place. Currently only the names of the ingress programs occur in multiple places, but also define the name for the egress program to be consistent. Note that even after this change one has the sync the defined values with the actual program names declared in the pping_kern.c file. Ideally, these would all be defined in a single place, but not aware of a convenient way to make that happen (cannot use the defined strings as function names as they are not identifiers, and if defined as identifiers instead it would not be possible to use them as strings). Signed-off-by: Simon Sundberg <simon.sundberg@kau.se>
Practical 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 doing rapid prototyping and development, writing C-code BPF programs using libbpf. The goal is to make it easier for developers to get started coding.
Many developers struggle to get a working BPF build environment. The repo enviroment makes it easy to build/compile BPF programs by doing the necessary libbpf setup transparently and detect missing compile dependencies (via the configure script). It is a declared goal to make BPF programming more consumable by detecting and reporting issues (when possible).