feat: Add UDP GRO option

src/socket.rs

@@ -1068,6 +1068,36 @@ impl Socket {
         }
     }
 
+    /// Get the value of the `UDP_GRO` option on this socket.
+    ///
+    /// For more information about this option, see [`set_udp_gro`].
+    ///
+    /// [`set_udp_gro`]: Socket::set_udp_gro
+    #[cfg(all(feature = "all", target_os = "linux"))]
+    pub fn udp_gro(&self) -> io::Result<bool> {
+        unsafe {
+            getsockopt::<c_int>(self.as_raw(), sys::SOL_UDP, sys::UDP_GRO)
+                .map(|reuse| reuse != 0)
+        }
+    }
+
+    /// Set value for the `UDP_GRO` option on this socket.
+    ///
+    /// This indicates that the kernel can combine multiple datagrams into a
+    /// single buffer, this needs to be used in combination with [`Self::recvmsg`]
+    /// to get the number of segments in the buffer from the [`MsgHdr`].
+    #[cfg(all(feature = "all", target_os = "linux"))]
+    pub fn set_udp_gro(&self, reuse: bool) -> io::Result<()> {
+        unsafe {
+            setsockopt(
+                self.as_raw(),
+                sys::SOL_UDP,
+                sys::UDP_GRO,
+                reuse as c_int,
+            )
+        }
+    }
+
     /// Get the value of the `SO_SNDBUF` option on this socket.
     ///
     /// For more information about this option, see [`set_send_buffer_size`].

src/sys/unix.rs

@@ -179,7 +179,7 @@ pub(crate) use libc::SO_LINGER;
 ))]
 pub(crate) use libc::SO_LINGER_SEC as SO_LINGER;
 #[cfg(target_os = "linux")]
-pub(crate) use libc::SO_PASSCRED;
+pub(crate) use libc::{SO_PASSCRED, SOL_UDP, UDP_GRO};
 pub(crate) use libc::{
     ip_mreq as IpMreq, linger, IPPROTO_IP, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, IPV6_MULTICAST_IF,
     IPV6_MULTICAST_LOOP, IPV6_UNICAST_HOPS, IPV6_V6ONLY, IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP,