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use clap;
use clap::Arg;
use portus;
use portus::ipc::{BackendBuilder, Blocking};
use slog;
use std;
use time;
use {
Alg, GenericCongAvoidAlg, GenericCongAvoidConfigReport,
GenericCongAvoidConfigSS, DEFAULT_SS_THRESH,
};
pub fn make_args<A: GenericCongAvoidAlg>(
name: &str,
logger: impl Into<Option<slog::Logger>>,
) -> Result<(Alg<A>, String), std::num::ParseIntError> {
let ss_thresh_default = format!("{}", DEFAULT_SS_THRESH);
let matches = clap::App::new(name)
.version("0.2.0")
.author("Akshay Narayan <akshayn@mit.edu>")
.about("CCP implementation of a congestion avoidance algorithm")
.arg(Arg::with_name("ipc")
.long("ipc")
.help("Sets the type of ipc to use: (netlink|unix)")
.default_value("unix")
.validator(portus::algs::ipc_valid))
.arg(Arg::with_name("init_cwnd")
.long("init_cwnd")
.help("Sets the initial congestion window, in bytes. Setting 0 will use datapath default.")
.default_value("0"))
.arg(Arg::with_name("ss_thresh")
.long("ss_thresh")
.help("Sets the slow start threshold, in bytes")
.default_value(&ss_thresh_default))
.arg(Arg::with_name("ss_in_fold")
.long("ss_in_fold")
.help("Implement slow start in the datapath"))
.arg(Arg::with_name("report_per_ack")
.long("per_ack")
.help("Specifies that the datapath should send a measurement upon every ACK"))
.arg(Arg::with_name("report_per_interval")
.long("report_interval_ms")
.short("i")
.takes_value(true))
.group(clap::ArgGroup::with_name("interval")
.args(&["report_per_ack", "report_per_interval"])
.required(false))
.arg(Arg::with_name("compensate_update")
.long("compensate_update")
.help("Scale the congestion window update during slow start to compensate for reporting delay"))
.arg(Arg::with_name("deficit_timeout")
.long("deficit_timeout")
.default_value("0")
.help("Number of RTTs to wait after a loss event to allow further CWND reductions. \
Default 0 means CWND deficit counting is enforced strictly with no timeout."))
.args(&A::args())
.get_matches();
let ipc = String::from(matches.value_of("ipc").unwrap());
Ok((
Alg {
ss_thresh: u32::from_str_radix(matches.value_of("ss_thresh").unwrap(), 10)?,
init_cwnd: u32::from_str_radix(matches.value_of("init_cwnd").unwrap(), 10)?,
report_option: if matches.is_present("report_per_ack") {
GenericCongAvoidConfigReport::Ack
} else if matches.is_present("report_per_interval") {
GenericCongAvoidConfigReport::Interval(time::Duration::milliseconds(
matches
.value_of("report_per_interval")
.unwrap()
.parse()
.unwrap(),
))
} else {
GenericCongAvoidConfigReport::Rtt
},
ss: if matches.is_present("ss_in_fold") {
GenericCongAvoidConfigSS::Datapath
} else {
GenericCongAvoidConfigSS::Ccp
},
use_compensation: matches.is_present("compensate_update"),
deficit_timeout: u32::from_str_radix(matches.value_of("deficit_timeout").unwrap(), 10)?,
logger: logger.into(),
alg: A::with_args(matches),
},
ipc,
))
}
pub fn start<A: GenericCongAvoidAlg>(ipc: &str, log: slog::Logger, alg: Alg<A>)
where
A: 'static,
{
match ipc {
"unix" => {
use portus::ipc::unix::Socket;
let b = Socket::<Blocking>::new("in", "out")
.map(|sk| BackendBuilder { sock: sk })
.expect("ipc initialization");
portus::run::<_, Alg<A>>(
b,
portus::Config {
logger: Some(log),
},
alg,
)
.unwrap();
}
#[cfg(all(target_os = "linux"))]
"netlink" => {
use portus::ipc::netlink::Socket;
let b = Socket::<Blocking>::new()
.map(|sk| BackendBuilder { sock: sk })
.expect("ipc initialization");
portus::run::<_, Alg<A>>(
b,
portus::Config {
logger: Some(log),
},
alg
)
.unwrap();
}
#[cfg(all(target_os = "linux"))]
"char" => {
use portus::ipc::kp::Socket;
let b = Socket::<Blocking>::new()
.map(|sk| BackendBuilder { sock: sk })
.expect("char initialization");
portus::run::<_, Alg<A>>(
b,
portus::Config {
logger: Some(log),
},
alg
)
.unwrap()
}
_ => unreachable!(),
}
}