From fdb41acd53febebce3101636947aa671f86ecec1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Sun, 12 Apr 2026 20:44:18 +0200
Subject: [PATCH] socket: support TCP_CORK option in Linux

Enable getting and setting the corking state of a tcp connection.
See man:tcp(7).

Closes: #2758
---
 changelog/2769.added.md   |  1 +
 src/sys/socket/sockopt.rs | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 changelog/2769.added.md

diff --git a/changelog/2769.added.md b/changelog/2769.added.md
new file mode 100644
index 0000000000..94aff9d09a
--- /dev/null
+++ b/changelog/2769.added.md
@@ -0,0 +1 @@
+Add `nix::sys::socket::sockopt:TcpCork` on Linux.
diff --git a/src/sys/socket/sockopt.rs b/src/sys/socket/sockopt.rs
index 03a55d407c..5bc5ead46b 100644
--- a/src/sys/socket/sockopt.rs
+++ b/src/sys/socket/sockopt.rs
@@ -1315,6 +1315,16 @@ sockopt_impl!(
     libc::SO_ATTACH_REUSEPORT_CBPF,
     libc::sock_fprog
 );
+#[cfg(target_os = "linux")]
+sockopt_impl!(
+    /// Enable/disable TCP corking. If enabled all queued partial frames are
+    /// sent when the option is cleared again.
+    TcpCork,
+    Both,
+    libc::IPPROTO_TCP,
+    libc::TCP_CORK,
+    bool
+);
 
 #[allow(missing_docs)]
 // Not documented by Linux!