From cd353a538fea2fc58a8116e488a03ef77f022ae4 Mon Sep 17 00:00:00 2001
From: Lars Toenning <lars.toenning@gmail.com>
Date: Fri, 27 May 2022 19:47:04 +0000
Subject: [PATCH] csma: Avoid scheduling Receive() on own NetDevice

---
 src/csma/model/csma-channel.cc | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/csma/model/csma-channel.cc b/src/csma/model/csma-channel.cc
index eeb5a4249..ac0a6ee8b 100644
--- a/src/csma/model/csma-channel.cc
+++ b/src/csma/model/csma-channel.cc
@@ -223,10 +223,9 @@ CsmaChannel::TransmitEnd ()
   NS_LOG_LOGIC ("Receive");
 
   std::vector<CsmaDeviceRec>::iterator it;
-  uint32_t devId = 0;
   for (it = m_deviceList.begin (); it < m_deviceList.end (); it++)
     {
-      if (it->IsActive ())
+      if (it->IsActive () && it->devicePtr != m_deviceList[m_currentSrc].devicePtr)
         {
           // schedule reception events
           Simulator::ScheduleWithContext (it->devicePtr->GetNode ()->GetId (),
@@ -234,7 +233,6 @@ CsmaChannel::TransmitEnd ()
                                           &CsmaNetDevice::Receive, it->devicePtr,
                                           m_currentPkt->Copy (), m_deviceList[m_currentSrc].devicePtr);
         }
-      devId++;
     }
 
   // also schedule for the tx side to go back to IDLE