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e5b6c55f42
Add a field with the total packet length (including all headers) to
the packet_info struct. This information will be needed in later
commits which add byte counts to the aggregated information.
Note that this information is already part of the parsing_context
struct, but this won't be available after the packet has been
parsed (once the parse_packet_identifier_{tc,xdp}() function have
finished). It is unfortunately not trivial to replace current instaces
which use pkt_len from the parsing_context to instead take it from
packet_info, as ex. the parse_tcp_identifier() already takes 5
arguments, and packet_info is not one of them. Therefore, keep both
the pkt_len in parsing_context and packet_info for now.
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).