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fix(s2n-quic-platform): don't reduce rx MTU when tx MTU is reduced #2156

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Mar 19, 2024
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fix(s2n-quic-platform): don't reduce rx MTU when tx MTU is reduced #2156

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4 changes: 3 additions & 1 deletion quic/s2n-quic-platform/src/io/tokio.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -157,7 +157,9 @@ impl Io {
let payload_len = if gro_enabled {
u16::MAX
} else {
max_mtu.into()
// Use the originally configured MTU to allow larger packets to be received
// even if the tx MTU has been reduced due to configure_mtu_disc failing
self.builder.max_mtu.into()
} as u32;

let rx_buffer_size = queue_recv_buffer_size.unwrap_or(8 * (1 << 20));
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