Imported Upstream version 17.05

[deb_dpdk.git] / doc / guides / sample_app_ug / l3_forward.rst

diff --git a/doc/guides/sample_app_ug/l3_forward.rst b/doc/guides/sample_app_ug/l3_forward.rst
index ab916b9..6a6b8fb 100644 (file)
--- a/doc/guides/sample_app_ug/l3_forward.rst
+++ b/doc/guides/sample_app_ug/l3_forward.rst
@@ -129,43 +129,33 @@ Where,
 
 * ``--parse-ptype:`` Optional, set to use software to analyze packet type. Without this option, hardware will check the packet type.
 
-For example, consider a dual processor socket platform where cores 0-7 and 16-23 appear on socket 0, while cores 8-15 and 24-31 appear on socket 1.
-Let's say that the programmer wants to use memory from both NUMA nodes, the platform has only two ports, one connected to each NUMA node,
-and the programmer wants to use two cores from each processor socket to do the packet processing.
+For example, consider a dual processor socket platform with 8 physical cores, where cores 0-7 and 16-23 appear on socket 0,
+while cores 8-15 and 24-31 appear on socket 1.
 
-To enable L3 forwarding between two ports, using two cores, cores 1 and 2, from each processor,
-while also taking advantage of local memory access by optimizing around NUMA, the programmer must enable two queues from each port,
-pin to the appropriate cores and allocate memory from the appropriate NUMA node. This is achieved using the following command:
+To enable L3 forwarding between two ports, assuming that both ports are in the same socket, using two cores, cores 1 and 2,
+(which are in the same socket too), use the following command:
 
 .. code-block:: console
 
-    ./build/l3fwd -c 606 -n 4 -- -p 0x3 --config="(0,0,1),(0,1,2),(1,0,9),(1,1,10)"
+    ./build/l3fwd -l 1,2 -n 4 -- -p 0x3 --config="(0,0,1),(1,0,2)"
 
 In this command:
 
-*   The -c option enables cores 0, 1, 2, 3
+*   The -l option enables cores 1, 2
 
 *   The -p option enables ports 0 and 1
 
-*   The --config option enables two queues on each port and maps each (port,queue) pair to a specific core.
-    Logic to enable multiple RX queues using RSS and to allocate memory from the correct NUMA nodes
-    is included in the application and is done transparently.
+*   The --config option enables one queue on each port and maps each (port,queue) pair to a specific core.
     The following table shows the mapping in this example:
 
 +----------+-----------+-----------+-------------------------------------+
 | **Port** | **Queue** | **lcore** | **Description**                     |
 |          |           |           |                                     |
 +----------+-----------+-----------+-------------------------------------+
-| 0        | 0         | 0         | Map queue 0 from port 0 to lcore 0. |
+| 0        | 0         | 1         | Map queue 0 from port 0 to lcore 1. |
 |          |           |           |                                     |
 +----------+-----------+-----------+-------------------------------------+
-| 0        | 1         | 2         | Map queue 1 from port 0 to lcore 2. |
-|          |           |           |                                     |
-+----------+-----------+-----------+-------------------------------------+
-| 1        | 0         | 1         | Map queue 0 from port 1 to lcore 1. |
-|          |           |           |                                     |
-+----------+-----------+-----------+-------------------------------------+
-| 1        | 1         | 3         | Map queue 1 from port 1 to lcore 3. |
+| 1        | 0         | 2         | Map queue 0 from port 1 to lcore 2. |
 |          |           |           |                                     |
 +----------+-----------+-----------+-------------------------------------+