net/tcp: fix send RST bug when receive syn retransmit in syn-rcvd state

wenquan1 · wenquan1 · commit 9040944237a6 · 2025-12-26T20:50:53.000+08:00
Signed-off-by: wenquan1 &lt;wenquan1@xiaomi.com&gt;
diff --git a/net/tcp/tcp_input.c b/net/tcp/tcp_input.c
@@ -878,13 +878,11 @@ static void tcp_input(FAR struct net_driver_s *dev, uint8_t domain,
               DEBUGASSERT(conn->crefs == 1);
               conn->crefs = 0;
               tcp_free(conn);
-              return;
+              goto drop;
             }
         }
-      else
-        {
-          goto found;
-        }
+
+      goto found;
     }
 
   /* If we didn't find an active connection that expected the packet,

Original file line number	Diff line number	Diff line change
`@@ -878,13 +878,11 @@ static void tcp_input(FAR struct net_driver_s *dev, uint8_t domain,`
`878`	`878`	`DEBUGASSERT(conn->crefs == 1);`
`879`	`879`	`conn->crefs = 0;`
`880`	`880`	`tcp_free(conn);`
`881`		`- return;`
	`881`	`+ goto drop;`
`882`	`882`	`}`
`883`	`883`	`}`
`884`		`- else`
`885`		`- {`
`886`		`- goto found;`
`887`		`- }`
	`884`	`+`
	`885`	`+ goto found;`
`888`	`886`	`}`
`889`	`887`
`890`	`888`	`/* If we didn't find an active connection that expected the packet,`