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1aefa2e5e6
Build completing tests passing Refactor the Map API to better align with the aya programs API. Specifically remove all internal locking mechanisms and custom Deref/DerefMut implementations. They are replaced with a Map enum and AsRef/AsMut implementations. All Try_From implementations have been moved to standardized enums, with a slightly special one for PerfEventArray's. Also cleanup/fix all associated tests and documentation. Signed-off-by: Andrew Stoycos <astoycos@redhat.com> |
2 years ago | |
|---|---|---|
| .. | ||
| src | 2 years ago | |
| Cargo.toml | 2 years ago | |
| README.md | 2 years ago | |
| release.toml | 2 years ago | |
README.md
aya-log - a logging library for eBPF programs
Overview
aya-log is a logging library for eBPF programs written using aya. Think of
it as the log crate for eBPF.
Installation
User space
Add aya-log to Cargo.toml:
[dependencies]
aya-log = { git = "https://github.com/aya-rs/aya", branch = "main" }
eBPF side
Add aya-log-ebpf to Cargo.toml:
[dependencies]
aya-log-ebpf = { git = "https://github.com/aya-rs/aya", branch = "main" }
Example
Here's an example that uses aya-log in conjunction with the env_logger crate
to log eBPF messages to the terminal.
User space code
use aya_log::BpfLogger;
env_logger::init();
// Will log using the default logger, which is TermLogger in this case
BpfLogger::init(&mut bpf).unwrap();
eBPF code
use aya_log_ebpf::info;
fn try_xdp_firewall(ctx: XdpContext) -> Result<u32, ()> {
if let Some(port) = tcp_dest_port(&ctx)? {
if block_port(port) {
info!(&ctx, "❌ blocked incoming connection on port: {}", port);
return Ok(XDP_DROP);
}
}
Ok(XDP_PASS)
}