Imported Upstream version 17.05

[deb_dpdk.git] / doc / guides / sample_app_ug / l3_forward_access_ctrl.rst

diff --git a/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst b/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
index 4049e01..a6aa4fb 100644 (file)
--- a/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
+++ b/doc/guides/sample_app_ug/l3_forward_access_ctrl.rst
@@ -306,48 +306,35 @@ where,
 
 *   --no-numa: optional, disables numa awareness
 
-As an example, consider a dual processor socket platform where cores 0, 2, 4, 6, 8 and 10 appear on socket 0,
-while cores 1, 3, 5, 7, 9 and 11 appear on socket 1.
-Let's say that the user wants to use memory from both NUMA nodes,
-the platform has only two ports and the user 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 from each processor,
-while also taking advantage of local memory access by optimizing around NUMA,
-the user 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-acl -c f -n 4 -- -p 0x3 --config="(0,0,0),(0,1,2),(1,0,1),(1,1,3)" --rule_ipv4="./rule_ipv4.db" -- rule_ipv6="./rule_ipv6.db" --scalar
+    ./build/l3fwd-acl -l 1,2 -n 4 -- -p 0x3 --config="(0,0,1),(1,0,2)" --rule_ipv4="./rule_ipv4.db" -- rule_ipv6="./rule_ipv6.db" --scalar
 
 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        | 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.            |
-    |          |            |           |                                                |
-    +----------+------------+-----------+------------------------------------------------+
+    +----------+------------+-----------+-------------------------------------+
+    | **Port** | **Queue**  | **lcore** |            **Description**          |
+    |          |            |           |                                     |
+    +==========+============+===========+=====================================+
+    | 0        | 0          | 1         | Map queue 0 from port 0 to lcore 1. |
+    |          |            |           |                                     |
+    +----------+------------+-----------+-------------------------------------+
+    | 1        | 0          | 2         | Map queue 0 from port 1 to lcore 2. |
+    |          |            |           |                                     |
+    +----------+------------+-----------+-------------------------------------+
 
 *   The --rule_ipv4 option specifies the reading of IPv4 rules sets from the ./ rule_ipv4.db file.