Jiong says: This patch set is an application of CFG information on eBPF program visualization. It presents some initial code for building CFG information from eBPF instruction sequences.
After we get eBPF program bytecode, we do sub-program detection and basic-block partition. These information then are visualized into DOT graph. The user could use any DOT graphic tools (xdot, graphviz etc) to view it. For example: bpftool prog dump xlated id 2 visual &>output.dot [xdot | dotty] output.dot dot -Tpng -o output.png This initial patch set hasn't tuned much on the dot description layout nor decoration, we could improve them later once the direction of the patch set is agreed on. We could also visualize some static analysis performance data. v2 (Jakub): - update license headers and add SPDX tags. Jiong Wang (7): tools: bpftool: remove unnecessary 'if' to reduce indentation tools: bpftool: factor out xlated dump related code into separate file tools: bpftool: detect sub-programs from the eBPF sequence tools: bpftool: partition basic-block for each function in the CFG tools: bpftool: add out edges for each basic-block tools: bpftool: generate .dot graph from CFG information tools: bpftool: new command-line option and documentation for 'visual' Quentin Monnet (1): tools: bpftool: add bash completion for CFG dump tools/bpf/bpftool/Documentation/bpftool-prog.rst | 18 +- tools/bpf/bpftool/bash-completion/bpftool | 13 +- tools/bpf/bpftool/cfg.c | 514 +++++++++++++++++++++++ tools/bpf/bpftool/cfg.h | 43 ++ tools/bpf/bpftool/prog.c | 305 ++------------ tools/bpf/bpftool/xlated_dumper.c | 338 +++++++++++++++ tools/bpf/bpftool/xlated_dumper.h | 64 +++ 7 files changed, 1010 insertions(+), 285 deletions(-) create mode 100644 tools/bpf/bpftool/cfg.c create mode 100644 tools/bpf/bpftool/cfg.h create mode 100644 tools/bpf/bpftool/xlated_dumper.c create mode 100644 tools/bpf/bpftool/xlated_dumper.h -- 2.15.1
