examples/ip_pipeline: add configuration with TAP

To illustrate the TAP port usage, the sample configuration file with
passthrough pipeline connected to TAP interface is added.

Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>

diff --git a/examples/ip_pipeline/config/tap.cfg b/examples/ip_pipeline/config/tap.cfg
new file mode 100644 (file)
index 0000000..10d35eb
--- /dev/null
+++ b/examples/ip_pipeline/config/tap.cfg
@@ -0,0 +1,64 @@
+;   BSD LICENSE
+;
+;   Copyright(c) 2016 Intel Corporation. All rights reserved.
+;   All rights reserved.
+;
+;   Redistribution and use in source and binary forms, with or without
+;   modification, are permitted provided that the following conditions
+;   are met:
+;
+;     * Redistributions of source code must retain the above copyright
+;       notice, this list of conditions and the following disclaimer.
+;     * Redistributions in binary form must reproduce the above copyright
+;       notice, this list of conditions and the following disclaimer in
+;       the documentation and/or other materials provided with the
+;       distribution.
+;     * Neither the name of Intel Corporation nor the names of its
+;       contributors may be used to endorse or promote products derived
+;       from this software without specific prior written permission.
+;
+;   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+;   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+;   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+;   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+;   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+;   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+;   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+;   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+;   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+;   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+;             ______________          ______________________
+;            |              |  TAP0  |                      |
+; RXQ0.0 --->|              |------->|--+                   |
+;            |              |  TAP1  |  | br0               |
+; TXQ1.0 <---|              |<-------|<-+                   |
+;            | Pass-through |        |     Linux Kernel     |
+;            |     (P1)     |        |     Network Stack    |
+;            |              |  TAP1  |                      |
+; RXQ1.0 --->|              |------->|--+                   |
+;            |              |  TAP0  |  | br0               |
+; TXQ0.0 <---|              |<-------|<-+                   |
+;            |______________|        |______________________|
+;
+; Configure Linux kernel bridge between TAP0 and TAP1 interfaces:
+;    [Linux]$ ifconfig TAP0 up
+;    [Linux]$ ifconfig TAP1 up
+;    [Linux]$ brctl addbr "br0"
+;    [Linux]$ brctl addif br0 TAP0
+;    [Linux]$ brctl addif br0 TAP1
+;    [Linux]$ ifconfig br0 up
+
+[EAL]
+log_level = 0
+
+[PIPELINE0]
+type = MASTER
+core = 0
+
+[PIPELINE1]
+type = PASS-THROUGH
+core = 1
+pktq_in = RXQ0.0 TAP1 RXQ1.0 TAP0
+pktq_out = TAP0 TXQ1.0 TAP1 TXQ0.0