From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: bruce.richardson@intel.com, pablo.de.lara.guarch@intel.com
Cc: dev@dpdk.org, Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH 2/2] doc: l2fwd: document new --[no-]mac-tweaking option
Date: Tue, 26 Jul 2016 17:56:27 +0200 [thread overview]
Message-ID: <1469548587-3202-3-git-send-email-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <1469548587-3202-1-git-send-email-maxime.coquelin@redhat.com>
This patch documents the new l2fwd option, which provides a way to
disable the MAC addresses tweaking, enabling the use of l2fwd for basic
VM to VM communication.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
doc/guides/sample_app_ug/img/l2_fwd_vm2vm.svg | 311 +++++++++++++++++++++
.../sample_app_ug/l2_forward_real_virtual.rst | 24 +-
2 files changed, 329 insertions(+), 6 deletions(-)
create mode 100644 doc/guides/sample_app_ug/img/l2_fwd_vm2vm.svg
diff --git a/doc/guides/sample_app_ug/img/l2_fwd_vm2vm.svg b/doc/guides/sample_app_ug/img/l2_fwd_vm2vm.svg
new file mode 100644
index 0000000..b84dcb2
--- /dev/null
+++ b/doc/guides/sample_app_ug/img/l2_fwd_vm2vm.svg
@@ -0,0 +1,311 @@
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diff --git a/doc/guides/sample_app_ug/l2_forward_real_virtual.rst b/doc/guides/sample_app_ug/l2_forward_real_virtual.rst
index a1c10c0..dcb486c 100644
--- a/doc/guides/sample_app_ug/l2_forward_real_virtual.rst
+++ b/doc/guides/sample_app_ug/l2_forward_real_virtual.rst
@@ -50,15 +50,17 @@ performs L2 forwarding for each packet that is received on an RX_PORT.
The destination port is the adjacent port from the enabled portmask, that is,
if the first four ports are enabled (portmask 0xf),
ports 1 and 2 forward into each other, and ports 3 and 4 forward into each other.
-Also, the MAC addresses are affected as follows:
+Also, if MAC addresses tweaking is enabled, the MAC addresses are affected as follows:
* The source MAC address is replaced by the TX_PORT MAC address
* The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID
-This application can be used to benchmark performance using a traffic-generator, as shown in the :numref:`figure_l2_fwd_benchmark_setup`.
+This application can be used to benchmark performance using a traffic-generator, as shown in the :numref:`figure_l2_fwd_benchmark_setup`,
+or in a virtualized environment as shown in :numref:`figure_l2_fwd_virtenv_benchmark_setup`.
-The application can also be used in a virtualized environment as shown in :numref:`figure_l2_fwd_virtenv_benchmark_setup`.
+This application can also be used for basic VM to VM communication as shown in :numref:`figure_l2_fwd_vm2vm`,
+when MAC addresses tweaking is disabled.
The L2 Forwarding application can also be used as a starting point for developing a new application based on the DPDK.
@@ -75,6 +77,12 @@ The L2 Forwarding application can also be used as a starting point for developin
Performance Benchmark Setup (Virtualized Environment)
+.. _figure_l2_fwd_vm2vm:
+
+.. figure:: img/l2_fwd_vm2vm.*
+
+ Virtual Machine to Virtual Machine communication.
+
.. _l2_fwd_vf_setup:
Virtual Function Setup Instructions
@@ -128,7 +136,7 @@ The application requires a number of command line options:
.. code-block:: console
- ./build/l2fwd [EAL options] -- -p PORTMASK [-q NQ]
+ ./build/l2fwd [EAL options] -- -p PORTMASK [-q NQ] --[no-]mac-tweaking
where,
@@ -136,7 +144,10 @@ where,
* q NQ: A number of queues (=ports) per lcore (default is 1)
-To run the application in linuxapp environment with 4 lcores, 16 ports and 8 RX queues per lcore, issue the command:
+* --[no-]mac-tweaking: Enable or disable MAC addresses tweaking (enabled by default).
+
+To run the application in linuxapp environment with 4 lcores, 16 ports and 8 RX queues per lcore and MAC address
+tweaking enabled, issue the command:
.. code-block:: console
@@ -415,7 +426,8 @@ Packets are read in a burst of size MAX_PKT_BURST.
The rte_eth_rx_burst() function writes the mbuf pointers in a local table and returns the number of available mbufs in the table.
Then, each mbuf in the table is processed by the l2fwd_simple_forward() function.
-The processing is very simple: process the TX port from the RX port, then replace the source and destination MAC addresses.
+The processing is very simple: process the TX port from the RX port, then replace the source and destination MAC addresses if MAC
+addresses tweaking is enabled.
.. note::
--
2.7.4
next prev parent reply other threads:[~2016-07-26 15:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-26 15:56 [dpdk-dev] [PATCH 0/2] examples/l2fwd: Add option to enable/disable MAC addresses tweaking Maxime Coquelin
2016-07-26 15:56 ` [dpdk-dev] [PATCH 1/2] examples/l2fwd: Add new " Maxime Coquelin
2016-08-30 15:42 ` Mcnamara, John
2016-07-26 15:56 ` Maxime Coquelin [this message]
2016-08-30 15:42 ` [dpdk-dev] [PATCH 0/2] examples/l2fwd: Add " Mcnamara, John
2016-09-23 13:54 ` Maxime Coquelin
2016-09-21 21:53 ` De Lara Guarch, Pablo
2016-09-23 13:52 ` Maxime Coquelin
2016-09-23 17:11 ` De Lara Guarch, Pablo
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