tcp_data_event: Add a comment

2021-05-28 17:44:13 +09:00 · 2021-05-28 17:44:13 +09:00 · 7ac6c0a8de
parent 70d215b11f
commit 7ac6c0a8de
1 changed files with 5 additions and 1 deletions
--- a/net/tcp/tcp_callback.c
+++ b/net/tcp/tcp_callback.c
@ -96,7 +96,11 @@ tcp_data_event(FAR struct net_driver_s *dev, FAR struct tcp_conn_s *conn,
 #ifdef CONFIG_NET_STATISTICS
          g_netstats.tcp.drop++;
 #endif
-          /* Clear the TCP_SNDACK bit so that no ACK will be sent */
+          /* Clear the TCP_SNDACK bit so that no ACK will be sent.
+           *
+           * Revisit: It might make more sense to send a dup ack
+           * to give a hint to the peer.
+           */

          ret &= ~TCP_SNDACK;
        }