From 994f3727d8a3c2f68174d2439b5879e16aeae6a3 Mon Sep 17 00:00:00 2001
From: Yuke Peng <pykfirst@gmail.com>
Date: Sun, 18 Aug 2024 19:56:40 +0800
Subject: [PATCH] Introduce somaxconn to restrict backlog

---
 kernel/aster-nix/src/net/socket/ip/stream/listen.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/aster-nix/src/net/socket/ip/stream/listen.rs b/kernel/aster-nix/src/net/socket/ip/stream/listen.rs
index 5227bbc62..9e576e1f2 100644
--- a/kernel/aster-nix/src/net/socket/ip/stream/listen.rs
+++ b/kernel/aster-nix/src/net/socket/ip/stream/listen.rs
@@ -23,8 +23,11 @@ impl ListenStream {
         bound_socket: AnyBoundSocket,
         backlog: usize,
     ) -> core::result::Result<Self, (Error, AnyBoundSocket)> {
+        const SOMAXCONN: usize = 4096;
+        let somaxconn = SOMAXCONN.min(backlog);
+
         let listen_stream = Self {
-            backlog,
+            backlog: somaxconn,
             bound_socket,
             backlog_sockets: RwLock::new(Vec::new()),
         };