Fix send buffer misalignment [No 2]

ipa-core/benches/oneshot/ipa.rs

@@ -86,6 +86,7 @@ impl Args {
         self.active_work
             .map(NonZeroUsize::get)
             .unwrap_or_else(|| self.query_size.clamp(16, 1024))
+            .next_power_of_two()
     }
 
     fn attribution_window(&self) -> Option<NonZeroU32> {

ipa-core/src/app.rs

@@ -1,4 +1,4 @@
-use std::{num::NonZeroUsize, sync::Weak};
+use std::sync::Weak;
 
 use async_trait::async_trait;
 
@@ -13,17 +13,18 @@
     protocol::QueryId,
     query::{NewQueryError, QueryProcessor, QueryStatus},
     sync::Arc,
+    utils::NonZeroU32PowerOfTwo,
 };
 
 #[derive(Default)]
 pub struct AppConfig {
-    active_work: Option<NonZeroUsize>,
+    active_work: Option<NonZeroU32PowerOfTwo>,
     key_registry: Option<KeyRegistry<PrivateKeyOnly>>,
 }
 
 impl AppConfig {
     #[must_use]
-    pub fn with_active_work(mut self, active_work: Option<NonZeroUsize>) -> Self {
+    pub fn with_active_work(mut self, active_work: Option<NonZeroU32PowerOfTwo>) -> Self {
         self.active_work = active_work;
         self
     }

ipa-core/src/bin/helper.rs

@@ -2,7 +2,6 @@ use std::{
     fs,
     io::BufReader,
     net::TcpListener,
-    num::NonZeroUsize,
     os::fd::{FromRawFd, RawFd},
     path::{Path, PathBuf},
     process,
@@ -18,7 +17,7 @@ use ipa_core::{
     error::BoxError,
     helpers::HelperIdentity,
     net::{ClientIdentity, HttpShardTransport, HttpTransport, MpcHelperClient},
-    AppConfig, AppSetup,
+    AppConfig, AppSetup, NonZeroU32PowerOfTwo,
 };
 use tracing::{error, info};
 
@@ -93,7 +92,7 @@ struct ServerArgs {
 
     /// Override the amount of active work processed in parallel
     #[arg(long)]
-    active_work: Option<NonZeroUsize>,
+    active_work: Option<NonZeroU32PowerOfTwo>,
 }
 
 #[derive(Debug, Subcommand)]