From 92beddd72f8e4a942dd832c448f405bf321e6cfa Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon>
Date: Sat, 6 Mar 2010 11:55:00 +0000
Subject: [PATCH] task #7013 (Create option to have all packets delivered to
 netif->output in one piece): Always copy to try to create single pbufs in
 tcp_write.

---
 CHANGELOG          | 5 +++++
 src/core/tcp_out.c | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index 78301051..7e218d9d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -13,6 +13,11 @@ HISTORY
 
   ++ New features:
 
+  2010-03-06: Simon Goldschmidt
+  * tcp_out.c: task #7013 (Create option to have all packets delivered to
+    netif->output in one piece): Always copy to try to create single pbufs
+    in tcp_write.
+
   2010-03-06: Simon Goldschmidt
   * api.h, api_lib.c, sockets.c: task #10167 (sockets: speed up TCP recv
     by not allocating a netbuf): added function netconn_recv_tcp_pbuf()
diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
index 25ec95b2..6f244736 100644
--- a/src/core/tcp_out.c
+++ b/src/core/tcp_out.c
@@ -241,6 +241,11 @@ tcp_write(struct tcp_pcb *pcb, const void *arg, u16_t len, u8_t apiflags)
   u16_t oversize_used = 0;
 #endif /* TCP_OVERSIZE */
 
+#if LWIP_NETIF_TX_SINGLE_PBUF
+  /* Always copy to try to create single pbufs for TX */
+  apiflags |= TCP_WRITE_FLAG_COPY;
+#endif /* LWIP_NETIF_TX_SINGLE_PBUF */
+
   LWIP_DEBUGF(TCP_OUTPUT_DEBUG, ("tcp_write(pcb=%p, data=%p, len=%"U16_F", apiflags=%"U16_F")\n",
     (void *)pcb, arg, len, (u16_t)apiflags));
   /* connection is in invalid state for data transmission? */