commit 540a8dacbe0da88fde97a6c1201d6e1ba95c5cf6
author Florin Coras <fcoras@cisco.com> Tue Jun 18 08:55:14 2019 -0700
committer Florin Coras <florin.coras@gmail.com> Tue Jun 18 19:18:53 2019 +0000
tree f0c9fe069826acda116d6f10db68ba2a294e0622
parent b54a599f3815954e17b370ffb203cb790b628513

tcp: allow custom output next node

Type: feature

Change-Id: If9804d3685d2a52efa06e412ae1ebb39c6a44b8b
Signed-off-by: Florin Coras <fcoras@cisco.com>

src/vnet/tcp/tcp.h

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index aeae57c..132ec13 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -323,6 +323,7 @@
   u32 tx_fifo_size;	/**< Tx fifo size. Used to constrain cwnd */
 
   u32 psh_seq;		/**< Add psh header for seg that includes this */
+  u32 out_next_index;	/**< Can be used to control next node in output */
 } tcp_connection_t;
 
 /* *INDENT-OFF* */

src/vnet/tcp/tcp_output.c

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index 77065cd..abd674d 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -2062,6 +2062,9 @@
       return;
     }
 
+  /* If next_index is not drop use it */
+  *next0 = tc0->out_next_index ? tc0->out_next_index : *next0;
+
   vnet_buffer (b0)->sw_if_index[VLIB_TX] = tc0->c_fib_index;
   vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;