From a0b2d3d80eab5d108f52cf1ec1cc467f4db30cb4 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 13 Jan 2022 22:30:20 +0000
Subject: [PATCH] Check return value of eth_send in case of errors

---
 nse_dnet.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/nse_dnet.cc b/nse_dnet.cc
index 51bf57538..73a323409 100644
--- a/nse_dnet.cc
+++ b/nse_dnet.cc
@@ -206,8 +206,11 @@ static int ethernet_send (lua_State *L)
       log_write(LOG_STDOUT, "%s: Ethernet frame (%lu bytes) > %s\n",
           SCRIPT_ENGINE, len, udata->devname);
   }
-  eth_send(udata->eth, frame, len);
-  return nseU_success(L);
+  size_t sent = eth_send(udata->eth, frame, len);
+  if (sent == len)
+    return nseU_success(L);
+  else
+    return nseU_safeerror(L, "eth_send error: %lu", sent);
 }
 
 static int ip_open (lua_State *L)