From 5ef78a8b17a893e7534a4c02d34f636cfe4d87e0 Mon Sep 17 00:00:00 2001
From: Gilad Naaman <70581924+gnaaman-dn@users.noreply.github.com>
Date: Wed, 18 Dec 2024 10:29:57 +0200
Subject: [PATCH] Add Sctp protocol and MSG_NOTIFICATION (#2562)

---
 changelog/2562.added.md |  1 +
 src/sys/socket/mod.rs   | 11 +++++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 changelog/2562.added.md

diff --git a/changelog/2562.added.md b/changelog/2562.added.md
new file mode 100644
index 0000000000..432963c247
--- /dev/null
+++ b/changelog/2562.added.md
@@ -0,0 +1 @@
+Add socket protocol `Sctp`, as well as `MSG_NOTIFICATION` for non-Android Linux targets.
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index dd5367b1c3..8b35a9f626 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -213,6 +213,14 @@ pub enum SockProtocol {
     Icmp = libc::IPPROTO_ICMP,
     /// ICMPv6 protocol (ICMP over IPv6)
     IcmpV6 = libc::IPPROTO_ICMPV6,
+    /// SCTP ([sctp(7)](https://man7.org/linux/man-pages/man7/sctp.7.html))
+    #[cfg(any(
+        apple_targets,
+        linux_android,
+        target_os = "freebsd",
+        target_os = "netbsd"
+    ))]
+    Sctp = libc::IPPROTO_SCTP,
 }
 
 impl SockProtocol {
@@ -356,6 +364,9 @@ libc_bitflags! {
                   target_os = "fuchsia",
                   target_os = "freebsd"))]
         MSG_WAITFORONE;
+        /// Indicates that this message is not a user message but an SCTP notification.
+        #[cfg(target_os = "linux")]
+        MSG_NOTIFICATION;
     }
 }