Red Bear OS
717bc436be
The previous code unconditionally required a legacy INTX line, which on bare metal is missing for nearly every modern 82599/X540/X550 board that has its IRQ lines wired to MSI-X only. pcid_interface allocates MSI-X when the device advertises it, falls back to MSI, then to legacy INTX, so the change preserves every existing path while unlocking the much higher line-rate headroom of MSI-X per-vector queuing that the device's enable_msix_interrupt code already implements in device.rs. The IRQ-acknowledge-and-write pattern is unchanged: the kernel masks the line on delivery, we must re-arm unconditionally or a foreign interrupt on a shared line leaves the line masked forever.
ixgbed (a.k.a. ixy.rs on Redox)
ixgbed is the Redox port of ixy.rs, a Rust rewrite of the ixy userspace network driver.
It is designed to be readable, idiomatic Rust code.
It supports Intel 82599 10GbE NICs (ixgbe family).
Features
- first 10 Gbit/s network driver on Redox
- transmitting 250 times faster than e1000 / rtl8168 driver
- MSI-X interrupts (not supported by Redox yet)
- less than 1000 lines of code for the driver
- documented code
Build instructions
See the Redox README for build instructions.
To run ixgbed on Redox (in case the driver is not shipped with Redox anymore)
- clone this project into
cookbook/recipes/drivers/source/ - create an entry for ixgbed in
cookbook/recipes/drivers/source/Cargo.toml - check if your ixgbe device is included in
config.toml - touch
filesystem.tomlin Redox's root directory, build Redox and run it
Usage
To test the driver's transmit and forwarding capabilities, have a look at rheinfall, a simple packet generator / forwarder application.
Docs
ixgbed contains documentation that can be created and viewed by running
cargo doc --open