[GitHub] [nuttx] xiaoxiang781216 commented on a diff in pull request #8102: net/tcp: debug feature to drop the tx/rx packet

[GitBox <gi...@apache.org>]

xiaoxiang781216 commented on code in PR #8102:
URL: https://github.com/apache/nuttx/pull/8102#discussion_r1069092153


##########
net/tcp/tcp_send.c:
##########
@@ -575,6 +575,34 @@ void tcp_synack(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
   /* Complete the common portions of the TCP message */
 
   tcp_sendcommon(dev, conn, tcp);
+
+#if defined(CONFIG_NET_STATISTICS) && \
+    defined(CONFIG_NET_TCP_DEBUG_DROP_SEND)
+
+#pragma message \
+  "CONFIG_NET_TCP_DEBUG_DROP_SEND is selected, this is debug " \
+  "feature to drop the tcp send packet on the floor, " \
+  "please confirm the configuration again if you do not want " \
+  "debug the TCP stack."
+
+  /* Debug feature to drop the tcp received packet on the floor */
+
+  if ((flags & TCP_PSH) != 0)
+    {
+      if ((g_netstats.tcp.sent %
+          CONFIG_NET_TCP_DEBUG_DROP_SEND_PROBABILITY) == 0)
+        {
+          uint32_t seq = tcp_getsequence(tcp->seqno);
+
+          syslog(1, "TCP DROP SNDPKT: "

Review Comment:
   ninfo



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