Compute maximum parallel QUIC streams using client stake (solana-labs…

…#26802)

* Compute maximum parallel QUIC streams using client stake

* clippy fixes

* Add unit test

client/src/connection_cache.rs

@@ -9,8 +9,14 @@ use {
     indexmap::map::{Entry, IndexMap},
     rand::{thread_rng, Rng},
     solana_measure::measure::Measure,
-    solana_sdk::{quic::QUIC_PORT_OFFSET, signature::Keypair, timing::AtomicInterval},
-    solana_streamer::tls_certificates::new_self_signed_tls_certificate_chain,
+    solana_sdk::{
+        pubkey::Pubkey, quic::QUIC_PORT_OFFSET, signature::Keypair, timing::AtomicInterval,
+    },
+    solana_streamer::{
+        nonblocking::quic::{compute_max_allowed_uni_streams, ConnectionPeerType},
+        streamer::StakedNodes,
+        tls_certificates::new_self_signed_tls_certificate_chain,
+    },
     std::{
         error::Error,
         net::{IpAddr, Ipv4Addr, SocketAddr, UdpSocket},
@@ -228,6 +234,8 @@ pub struct ConnectionCache {
     tpu_udp_socket: Arc<UdpSocket>,
     client_certificate: Arc<QuicClientCertificate>,
     use_quic: bool,
+    maybe_staked_nodes: Option<Arc<RwLock<StakedNodes>>>,
+    maybe_client_pubkey: Option<Pubkey>,
 }
 
 /// Models the pool of connections
@@ -279,6 +287,15 @@ impl ConnectionCache {
         Ok(())
     }
 
+    pub fn set_staked_nodes(
+        &mut self,
+        staked_nodes: &Arc<RwLock<StakedNodes>>,
+        client_pubkey: &Pubkey,
+    ) {
+        self.maybe_staked_nodes = Some(staked_nodes.clone());
+        self.maybe_client_pubkey = Some(*client_pubkey);
+    }
+
     pub fn with_udp(connection_pool_size: usize) -> Self {
         // The minimum pool size is 1.
         let connection_pool_size = 1.max(connection_pool_size);
@@ -303,6 +320,24 @@ impl ConnectionCache {
         }
     }
 
+    fn compute_max_parallel_chunks(&self) -> usize {
+        let (client_type, stake, total_stake) =
+            self.maybe_client_pubkey
+                .map_or((ConnectionPeerType::Unstaked, 0, 0), |pubkey| {
+                    self.maybe_staked_nodes.as_ref().map_or(
+                        (ConnectionPeerType::Unstaked, 0, 0),
+                        |stakes| {
+                            let rstakes = stakes.read().unwrap();
+                            rstakes.pubkey_stake_map.get(&pubkey).map_or(
+                                (ConnectionPeerType::Unstaked, 0, rstakes.total_stake),
+                                |stake| (ConnectionPeerType::Staked, *stake, rstakes.total_stake),
+                            )
+                        },
+                    )
+                });
+        compute_max_allowed_uni_streams(client_type, stake, total_stake)
+    }
+
     /// Create a lazy connection object under the exclusive lock of the cache map if there is not
     /// enough used connections in the connection pool for the specified address.
     /// Returns CreateConnectionResult.
@@ -335,6 +370,7 @@ impl ConnectionCache {
                 BaseTpuConnection::Quic(Arc::new(QuicClient::new(
                     endpoint.as_ref().unwrap().clone(),
                     *addr,
+                    self.compute_max_parallel_chunks(),
                 )))
             };
 
@@ -534,6 +570,8 @@ impl Default for ConnectionCache {
                 key: priv_key,
             }),
             use_quic: DEFAULT_TPU_USE_QUIC,
+            maybe_staked_nodes: None,
+            maybe_client_pubkey: None,
         }
     }
 }
@@ -604,8 +642,18 @@ mod tests {
         },
         rand::{Rng, SeedableRng},
         rand_chacha::ChaChaRng,
-        solana_sdk::quic::QUIC_PORT_OFFSET,
-        std::net::{IpAddr, Ipv4Addr, SocketAddr},
+        solana_sdk::{
+            pubkey::Pubkey,
+            quic::{
+                QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS, QUIC_MIN_STAKED_CONCURRENT_STREAMS,
+                QUIC_PORT_OFFSET,
+            },
+        },
+        solana_streamer::streamer::StakedNodes,
+        std::{
+            net::{IpAddr, Ipv4Addr, SocketAddr},
+            sync::{Arc, RwLock},
+        },
     };
 
     fn get_addr(rng: &mut ChaChaRng) -> SocketAddr {
@@ -661,6 +709,55 @@ mod tests {
         let _conn = map.get(&addr).expect("Address not found");
     }
 
+    #[test]
+    fn test_connection_cache_max_parallel_chunks() {
+        solana_logger::setup();
+        let mut connection_cache = ConnectionCache::default();
+        assert_eq!(
+            connection_cache.compute_max_parallel_chunks(),
+            QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS
+        );
+
+        let staked_nodes = Arc::new(RwLock::new(StakedNodes::default()));
+        let pubkey = Pubkey::new_unique();
+        connection_cache.set_staked_nodes(&staked_nodes, &pubkey);
+        assert_eq!(
+            connection_cache.compute_max_parallel_chunks(),
+            QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS
+        );
+
+        staked_nodes.write().unwrap().total_stake = 10000;
+        assert_eq!(
+            connection_cache.compute_max_parallel_chunks(),
+            QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS
+        );
+
+        staked_nodes
+            .write()
+            .unwrap()
+            .pubkey_stake_map
+            .insert(pubkey, 1);
+        assert_eq!(
+            connection_cache.compute_max_parallel_chunks(),
+            QUIC_MIN_STAKED_CONCURRENT_STREAMS
+        );
+
+        staked_nodes
+            .write()
+            .unwrap()
+            .pubkey_stake_map
+            .remove(&pubkey);
+        staked_nodes
+            .write()
+            .unwrap()
+            .pubkey_stake_map
+            .insert(pubkey, 1000);
+        assert_ne!(
+            connection_cache.compute_max_parallel_chunks(),
+            QUIC_MIN_STAKED_CONCURRENT_STREAMS
+        );
+    }
+
     // Test that we can get_connection with a connection cache configured for quic
     // on an address with a port that, if QUIC_PORT_OFFSET were added to it, it would overflow to
     // an invalid port.

client/src/nonblocking/quic_client.rs

@@ -267,15 +267,21 @@ pub struct QuicClient {
     connection: Arc<Mutex<Option<QuicNewConnection>>>,
     addr: SocketAddr,
     stats: Arc<ClientStats>,
+    num_chunks: usize,
 }
 
 impl QuicClient {
-    pub fn new(endpoint: Arc<QuicLazyInitializedEndpoint>, addr: SocketAddr) -> Self {
+    pub fn new(
+        endpoint: Arc<QuicLazyInitializedEndpoint>,
+        addr: SocketAddr,
+        num_chunks: usize,
+    ) -> Self {
         Self {
             endpoint,
             connection: Arc::new(Mutex::new(None)),
             addr,
             stats: Arc::new(ClientStats::default()),
+            num_chunks,
         }
     }
 
@@ -441,7 +447,7 @@ impl QuicClient {
 
     fn compute_chunk_length(num_buffers_to_chunk: usize, num_chunks: usize) -> usize {
         // The function is equivalent to checked div_ceil()
-        // Also, if num_chunks == 0 || num_buffers_per_chunk == 0, return 1
+        // Also, if num_chunks == 0 || num_buffers_to_chunk == 0, return 1
         num_buffers_to_chunk
             .checked_div(num_chunks)
             .map_or(1, |value| {
@@ -485,8 +491,7 @@ impl QuicClient {
         // by just getting a reference to the NewConnection once
         let connection_ref: &NewConnection = &connection;
 
-        let chunk_len =
-            Self::compute_chunk_length(buffers.len() - 1, QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS);
+        let chunk_len = Self::compute_chunk_length(buffers.len() - 1, self.num_chunks);
         let chunks = buffers[1..buffers.len()].iter().chunks(chunk_len);
 
         let futures: Vec<_> = chunks
@@ -530,7 +535,11 @@ impl QuicTpuConnection {
         addr: SocketAddr,
         connection_stats: Arc<ConnectionCacheStats>,
     ) -> Self {
-        let client = Arc::new(QuicClient::new(endpoint, addr));
+        let client = Arc::new(QuicClient::new(
+            endpoint,
+            addr,
+            QUIC_MAX_UNSTAKED_CONCURRENT_STREAMS,
+        ));
         Self::new_with_client(client, connection_stats)
     }
 

core/src/tpu.rs

@@ -100,6 +100,7 @@ impl Tpu {
         connection_cache: &Arc<ConnectionCache>,
         keypair: &Keypair,
         enable_quic_servers: bool,
+        staked_nodes: &Arc<RwLock<StakedNodes>>,
     ) -> Self {
         let TpuSockets {
             transactions: transactions_sockets,
@@ -127,7 +128,6 @@ impl Tpu {
             Some(bank_forks.read().unwrap().get_vote_only_mode_signal()),
         );
 
-        let staked_nodes = Arc::new(RwLock::new(StakedNodes::default()));
         let staked_nodes_updater_service = StakedNodesUpdaterService::new(
             exit.clone(),
             cluster_info.clone(),
@@ -181,7 +181,7 @@ impl Tpu {
                 forwarded_packet_sender,
                 exit.clone(),
                 MAX_QUIC_CONNECTIONS_PER_PEER,
-                staked_nodes,
+                staked_nodes.clone(),
                 MAX_STAKED_CONNECTIONS.saturating_add(MAX_UNSTAKED_CONNECTIONS),
                 0, // Prevent unstaked nodes from forwarding transactions
                 stats,

core/src/validator.rs

@@ -95,7 +95,7 @@ use {
         timing::timestamp,
     },
     solana_send_transaction_service::send_transaction_service,
-    solana_streamer::socket::SocketAddrSpace,
+    solana_streamer::{socket::SocketAddrSpace, streamer::StakedNodes},
     solana_vote_program::vote_state::VoteState,
     std::{
         collections::{HashMap, HashSet},
@@ -672,12 +672,15 @@ impl Validator {
         );
         let poh_recorder = Arc::new(Mutex::new(poh_recorder));
 
+        let staked_nodes = Arc::new(RwLock::new(StakedNodes::default()));
+
         let connection_cache = match use_quic {
             true => {
                 let mut connection_cache = ConnectionCache::new(tpu_connection_pool_size);
                 connection_cache
                     .update_client_certificate(&identity_keypair, node.info.gossip.ip())
                     .expect("Failed to update QUIC client certificates");
+                connection_cache.set_staked_nodes(&staked_nodes, &identity_keypair.pubkey());
                 Arc::new(connection_cache)
             }
             false => Arc::new(ConnectionCache::with_udp(tpu_connection_pool_size)),
@@ -994,6 +997,7 @@ impl Validator {
             &connection_cache,
             &identity_keypair,
             config.enable_quic_servers,
+            &staked_nodes,
         );
 
         datapoint_info!(