anchao commented on a change in pull request #5373:
URL: https://github.com/apache/incubator-nuttx/pull/5373#discussion_r795321572



##########
File path: net/tcp/tcp_send_buffered.c
##########
@@ -1145,6 +1168,20 @@ ssize_t psock_tcp_send(FAR struct socket *psock, FAR 
const void *buf,
       if (psock->s_sndcb == NULL)
         {
           psock->s_sndcb = tcp_callback_alloc(conn);
+
+#ifdef CONFIG_DEBUG_ASSERTIONS

Review comment:
       move the assertion to :
   
https://github.com/apache/incubator-nuttx/blob/master/net/devif/devif_callback.c#L354-L359

##########
File path: net/tcp/tcp_send_buffered.c
##########
@@ -376,6 +376,29 @@ static uint16_t psock_send_eventhandler(FAR struct 
net_driver_s *dev,
   conn = psock->s_conn;
   DEBUGASSERT(conn != NULL);
 
+#ifdef CONFIG_DEBUG_NET_ERROR
+  if (conn->dev == NULL || (pvconn != conn && pvconn != NULL))
+    {
+      nerr("ERROR: conn->dev == NULL or pvconn != conn:"
+           " dev=%p pvconn=%p pvpriv=%p flags=0x%04x"

Review comment:
       create the new file named tcp_dump.c and unify the tcp connect dump ?

##########
File path: include/nuttx/net/net.h
##########
@@ -270,6 +270,10 @@ struct socket
   /* Callback instance for TCP send() or UDP sendto() */
 
   FAR struct devif_callback_s *s_sndcb;
+
+#ifdef CONFIG_DEBUG_ASSERTIONS
+  int s_sndcb_alloc_cnt;     /* The callback allocation counter */

Review comment:
       add the assertion to 
   
https://github.com/apache/incubator-nuttx/blob/master/net/devif/devif_callback.c#L354-L359




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