From 96dedcc4c63556e069e2f5a04d95e986064b287b Mon Sep 17 00:00:00 2001
From: bdbai <bdbaiapp@163.com>
Date: Tue, 24 Aug 2021 16:07:19 +0800
Subject: [PATCH] Expose underlying device from PcapWriter

---
 src/phy/pcap_writer.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/phy/pcap_writer.rs b/src/phy/pcap_writer.rs
index 03fee45..a1a629b 100644
--- a/src/phy/pcap_writer.rs
+++ b/src/phy/pcap_writer.rs
@@ -143,6 +143,21 @@ impl<D: for<'a> Device<'a>, S: PcapSink + Clone> PcapWriter<D, S> {
         sink.global_header(link_type);
         PcapWriter { lower, sink, mode }
     }
+
+    /// Get a reference to the underlying device.
+    ///
+    /// Even if the device offers reading through a standard reference, it is inadvisable to
+    /// directly read from the device as doing so will circumvent the packet capture.
+    pub fn get_ref(&self) -> &D {
+        &self.lower
+    }
+
+    /// Get a mutable reference to the underlying device.
+    ///
+    /// It is inadvisable to directly read from the device as doing so will circumvent the packet capture.
+    pub fn get_mut(&mut self) -> &mut D {
+        &mut self.lower
+    }
 }
 
 impl<'a, D, S> Device<'a> for PcapWriter<D, S>