2018-04-17 19:46:50 -07:00
|
|
|
//! The `packet` module defines data structures and methods to pull data from the network.
|
2020-01-02 19:50:43 -08:00
|
|
|
use crate::recvmmsg::{recv_mmsg, NUM_RCVMMSGS};
|
2019-11-06 10:52:30 -08:00
|
|
|
pub use solana_perf::packet::{
|
2021-01-28 16:32:38 -08:00
|
|
|
limited_deserialize, to_packets_chunked, Packets, PacketsRecycler, NUM_PACKETS,
|
2021-03-03 10:23:05 -08:00
|
|
|
PACKETS_PER_BATCH,
|
2019-11-02 00:38:30 -07:00
|
|
|
};
|
2018-11-19 23:20:18 -08:00
|
|
|
|
2019-11-04 20:13:43 -08:00
|
|
|
use solana_metrics::inc_new_counter_debug;
|
|
|
|
pub use solana_sdk::packet::{Meta, Packet, PACKET_DATA_SIZE};
|
2020-01-02 19:50:43 -08:00
|
|
|
use std::{io::Result, net::UdpSocket, time::Instant};
|
2019-11-04 20:13:43 -08:00
|
|
|
|
2021-02-26 09:15:45 -08:00
|
|
|
pub fn recv_from(obj: &mut Packets, socket: &UdpSocket, max_wait_ms: u64) -> Result<usize> {
|
2019-11-04 20:13:43 -08:00
|
|
|
let mut i = 0;
|
|
|
|
//DOCUMENTED SIDE-EFFECT
|
|
|
|
//Performance out of the IO without poll
|
|
|
|
// * block on the socket until it's readable
|
|
|
|
// * set the socket to non blocking
|
|
|
|
// * read until it fails
|
|
|
|
// * set it back to blocking before returning
|
|
|
|
socket.set_nonblocking(false)?;
|
|
|
|
trace!("receiving on {}", socket.local_addr().unwrap());
|
|
|
|
let start = Instant::now();
|
|
|
|
loop {
|
2020-02-10 11:49:07 -08:00
|
|
|
obj.packets.resize(
|
|
|
|
std::cmp::min(i + NUM_RCVMMSGS, PACKETS_PER_BATCH),
|
|
|
|
Packet::default(),
|
|
|
|
);
|
2019-11-04 20:13:43 -08:00
|
|
|
match recv_mmsg(socket, &mut obj.packets[i..]) {
|
|
|
|
Err(_) if i > 0 => {
|
2021-02-26 09:15:45 -08:00
|
|
|
if start.elapsed().as_millis() as u64 > max_wait_ms {
|
2019-11-04 20:13:43 -08:00
|
|
|
break;
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
2019-11-04 20:13:43 -08:00
|
|
|
}
|
|
|
|
Err(e) => {
|
|
|
|
trace!("recv_from err {:?}", e);
|
2020-01-02 19:50:43 -08:00
|
|
|
return Err(e);
|
2019-11-04 20:13:43 -08:00
|
|
|
}
|
2020-02-10 11:49:07 -08:00
|
|
|
Ok((_, npkts)) => {
|
2019-11-04 20:13:43 -08:00
|
|
|
if i == 0 {
|
|
|
|
socket.set_nonblocking(true)?;
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
2019-11-04 20:13:43 -08:00
|
|
|
trace!("got {} packets", npkts);
|
|
|
|
i += npkts;
|
|
|
|
// Try to batch into big enough buffers
|
|
|
|
// will cause less re-shuffling later on.
|
2021-02-26 09:15:45 -08:00
|
|
|
if start.elapsed().as_millis() as u64 > max_wait_ms || i >= PACKETS_PER_BATCH {
|
2019-11-04 20:13:43 -08:00
|
|
|
break;
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2019-11-04 20:13:43 -08:00
|
|
|
obj.packets.truncate(i);
|
|
|
|
inc_new_counter_debug!("packets-recv_count", i);
|
|
|
|
Ok(i)
|
|
|
|
}
|
2019-04-17 14:14:57 -07:00
|
|
|
|
2019-11-04 20:13:43 -08:00
|
|
|
pub fn send_to(obj: &Packets, socket: &UdpSocket) -> Result<()> {
|
|
|
|
for p in &obj.packets {
|
|
|
|
let a = p.meta.addr();
|
|
|
|
socket.send_to(&p.data[..p.meta.size], &a)?;
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
2019-11-04 20:13:43 -08:00
|
|
|
Ok(())
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(test)]
|
2018-06-28 12:10:36 -07:00
|
|
|
mod tests {
|
2019-03-11 03:06:22 -07:00
|
|
|
use super::*;
|
2018-03-26 21:07:11 -07:00
|
|
|
use std::io;
|
|
|
|
use std::io::Write;
|
2019-05-03 11:01:35 -07:00
|
|
|
use std::net::{SocketAddr, UdpSocket};
|
2019-01-10 12:34:48 -08:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_packets_set_addr() {
|
|
|
|
// test that the address is actually being updated
|
2020-03-17 23:30:23 -07:00
|
|
|
let send_addr: SocketAddr = "127.0.0.1:123".parse().unwrap();
|
2019-01-10 12:34:48 -08:00
|
|
|
let packets = vec![Packet::default()];
|
2019-06-27 00:32:32 -07:00
|
|
|
let mut msgs = Packets::new(packets);
|
2019-01-10 12:34:48 -08:00
|
|
|
msgs.set_addr(&send_addr);
|
2020-05-15 09:35:43 -07:00
|
|
|
assert_eq!(msgs.packets[0].meta.addr(), send_addr);
|
2019-01-10 12:34:48 -08:00
|
|
|
}
|
2018-06-28 12:10:36 -07:00
|
|
|
|
2018-04-02 19:32:58 -07:00
|
|
|
#[test]
|
|
|
|
pub fn packet_send_recv() {
|
2019-04-17 14:14:57 -07:00
|
|
|
solana_logger::setup();
|
|
|
|
let recv_socket = UdpSocket::bind("127.0.0.1:0").expect("bind");
|
|
|
|
let addr = recv_socket.local_addr().unwrap();
|
|
|
|
let send_socket = UdpSocket::bind("127.0.0.1:0").expect("bind");
|
|
|
|
let saddr = send_socket.local_addr().unwrap();
|
|
|
|
let mut p = Packets::default();
|
|
|
|
|
|
|
|
p.packets.resize(10, Packet::default());
|
|
|
|
|
|
|
|
for m in p.packets.iter_mut() {
|
2018-04-02 19:32:58 -07:00
|
|
|
m.meta.set_addr(&addr);
|
2018-09-07 20:18:36 -07:00
|
|
|
m.meta.size = PACKET_DATA_SIZE;
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|
2019-11-04 20:13:43 -08:00
|
|
|
send_to(&p, &send_socket).unwrap();
|
2019-04-17 14:14:57 -07:00
|
|
|
|
2020-02-10 11:49:07 -08:00
|
|
|
let recvd = recv_from(&mut p, &recv_socket, 1).unwrap();
|
2019-04-17 14:14:57 -07:00
|
|
|
|
|
|
|
assert_eq!(recvd, p.packets.len());
|
|
|
|
|
2019-06-27 00:32:32 -07:00
|
|
|
for m in &p.packets {
|
2018-09-07 20:18:36 -07:00
|
|
|
assert_eq!(m.meta.size, PACKET_DATA_SIZE);
|
2018-04-02 19:32:58 -07:00
|
|
|
assert_eq!(m.meta.addr(), saddr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
pub fn debug_trait() {
|
|
|
|
write!(io::sink(), "{:?}", Packet::default()).unwrap();
|
|
|
|
write!(io::sink(), "{:?}", Packets::default()).unwrap();
|
2019-04-14 17:30:08 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_packet_partial_eq() {
|
2019-05-29 10:08:35 -07:00
|
|
|
let mut p1 = Packet::default();
|
2019-04-14 17:30:08 -07:00
|
|
|
let mut p2 = Packet::default();
|
|
|
|
|
2019-05-29 10:08:35 -07:00
|
|
|
p1.meta.size = 1;
|
|
|
|
p1.data[0] = 0;
|
|
|
|
|
|
|
|
p2.meta.size = 1;
|
|
|
|
p2.data[0] = 0;
|
|
|
|
|
2019-04-14 17:30:08 -07:00
|
|
|
assert!(p1 == p2);
|
2019-05-29 10:08:35 -07:00
|
|
|
|
|
|
|
p2.data[0] = 4;
|
2019-04-14 17:30:08 -07:00
|
|
|
assert!(p1 != p2);
|
|
|
|
}
|
2020-02-10 11:49:07 -08:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_packet_resize() {
|
|
|
|
solana_logger::setup();
|
|
|
|
let recv_socket = UdpSocket::bind("127.0.0.1:0").expect("bind");
|
|
|
|
let addr = recv_socket.local_addr().unwrap();
|
|
|
|
let send_socket = UdpSocket::bind("127.0.0.1:0").expect("bind");
|
|
|
|
let mut p = Packets::default();
|
|
|
|
p.packets.resize(PACKETS_PER_BATCH, Packet::default());
|
|
|
|
|
|
|
|
// Should only get PACKETS_PER_BATCH packets per iteration even
|
|
|
|
// if a lot more were sent, and regardless of packet size
|
|
|
|
for _ in 0..2 * PACKETS_PER_BATCH {
|
|
|
|
let mut p = Packets::default();
|
|
|
|
p.packets.resize(1, Packet::default());
|
|
|
|
for m in p.packets.iter_mut() {
|
|
|
|
m.meta.set_addr(&addr);
|
|
|
|
m.meta.size = 1;
|
|
|
|
}
|
|
|
|
send_to(&p, &send_socket).unwrap();
|
|
|
|
}
|
|
|
|
|
|
|
|
let recvd = recv_from(&mut p, &recv_socket, 100).unwrap();
|
|
|
|
|
|
|
|
// Check we only got PACKETS_PER_BATCH packets
|
|
|
|
assert_eq!(recvd, PACKETS_PER_BATCH);
|
|
|
|
assert_eq!(p.packets.capacity(), PACKETS_PER_BATCH);
|
|
|
|
}
|
2018-04-02 19:32:58 -07:00
|
|
|
}
|