diff options
Diffstat (limited to 'nftnl-sys/src/lib.rs')
| -rw-r--r-- | nftnl-sys/src/lib.rs | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/nftnl-sys/src/lib.rs b/nftnl-sys/src/lib.rs index 3c0a75f..884f304 100644 --- a/nftnl-sys/src/lib.rs +++ b/nftnl-sys/src/lib.rs @@ -6,13 +6,37 @@ // option. This file may not be copied, modified, or distributed // except according to those terms. -//! Low level FFI bindings to [`libnftnl`]. a userspace library providing a low-level netlink +//! Low level FFI bindings to [`libnftnl`], a userspace library providing a low-level netlink //! programming interface (API) to the in-kernel nf_tables subsystem. //! //! See [`nftnl`] for a higher level safe abstraction. //! +//! # Linking to libmnl and libnftnl +//! +//! By default this crate uses pkg-config to find and link to its C dependencies, [`libmnl`] and +//! [`libnftnl`]. To manually configure where to look for these libraries, set the environment +//! variables `LIBMNL_LIB_DIR` and `LIBNFTNL_LIB_DIR` to point to the directories where `libmnl.so` +//! (or `libmnl.a`) and `libnftnl.so` (or `libnftnl.a`) reside. +//! +//! # Selecting version of `libnftnl` +//! +//! This crate has bindings for most versions of [`libnftnl`]. All bindings are generated by +//! [`bindgen`] via the `generate_bindings.sh` script in this repository. +//! +//! Only one version of `libnftnl` can be exposed via this crate. By default the crate exports the +//! bindings for the oldest supported version (`libnftnl-1.0.6`). To get newer versions activate the +//! corresponding features. See `Cargo.toml` for available features/versions. +//! +//! So for example, to get bindings to `libnftnl-1.0.9` depend on this crate like this: +//! ```toml +//! [dependencies] +//! nftnl-sys = { version = "0.1", features = ["nftnl-1-0-9"] } +//! ``` +//! //! [`libnftnl`]: https://netfilter.org/projects/libnftnl/ +//! [`libmnl`]: https://netfilter.org/projects/libmnl/ //! [`nftnl`]: https://crates.io/crates/nftnl +//! [`bindgen`]: https://crates.io/crates/bindgen #![no_std] #![cfg(target_os = "linux")] |