From 064044eeae35fb303320ec111c7c57f70dcaf402 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Wed, 12 Apr 2017 09:12:55 +0200
Subject: [PATCH] sockets: speed up event_callback: don't iterate
 select_cb_list for NETCONN_EVT_RCVPLUS/SENDPLUS if the socket has been
 readable/writable before already

---
 src/api/sockets.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/api/sockets.c b/src/api/sockets.c
index 1181794a..199a9898 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -2049,13 +2049,18 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
   /* Set event as required */
   switch (evt) {
     case NETCONN_EVT_RCVPLUS:
-      sock->rcvevent++;
+      if (sock->rcvevent++ > 0) {
+        goto no_select_wakeup;
+      }
       break;
     case NETCONN_EVT_RCVMINUS:
       sock->rcvevent--;
       goto no_select_wakeup;
       break;
     case NETCONN_EVT_SENDPLUS:
+      if (sock->sendevent) {
+        goto no_select_wakeup;
+      }
       sock->sendevent = 1;
       break;
     case NETCONN_EVT_SENDMINUS: