feat(dataplane): create taps at initialization

Create taps for the interfaces specified via cmd line args.
Taps should be created before drivers start so that the latter
can learn their during their initialization.

Signed-off-by: Fredi Raspall <[email protected]>

Author: Fredi-raspall

dataplane/src/main.rs

@@ -20,7 +20,7 @@ use pyroscope::PyroscopeAgent;
 use pyroscope_pprofrs::{PprofConfig, pprof_backend};
 
 use net::buffer::{TestBuffer, TestBufferPool};
-use pkt_io::start_io;
+use pkt_io::{start_io, tap_init};
 
 use routing::RouterParamsBuilder;
 use tracectl::{custom_target, get_trace_ctl, trace_target};
@@ -137,11 +137,14 @@ fn main() {
     // populate it with [`PortSpec`]s and return the writer
     let (_handle, iom_ctl) = {
         match &launch_config.driver {
-            args::DriverConfigSection::Dpdk(_section) => {
+            args::DriverConfigSection::Dpdk(section) => {
+                tap_init(&section.interfaces).expect("Tap initialization failed");
+
                 info!("Using driver DPDK...");
                 todo!();
             }
             args::DriverConfigSection::Kernel(section) => {
+                tap_init(&section.interfaces).expect("Tap initialization failed");
                 info!("Using driver kernel...");
                 DriverKernel::start(
                     section.interfaces.clone().into_iter(),