X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=doc%2Fguides%2Fsample_app_ug%2Fl2_forward_real_virtual.rst;h=c0e8488e7987e13ae96d96f95e2bad204f611997;hb=4e3f887bec4b9f1b1a5138b30457e33a520a93e6;hp=39d6b0067a0de0296dcf0e7cf8551984875711e9;hpb=a0fbab25b7c301b685eacbabb6ecd9296623653d;p=dpdk.git

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 39d6b0067a..c0e8488e79 100644
--- a/doc/guides/sample_app_ug/l2_forward_real_virtual.rst
+++ b/doc/guides/sample_app_ug/l2_forward_real_virtual.rst
@@ -91,7 +91,10 @@ The application requires a number of command line options:
 
 .. code-block:: console
 
-    ./build/l2fwd [EAL options] -- -p PORTMASK [-q NQ] --[no-]mac-updating
+    ./build/l2fwd [EAL options] -- -p PORTMASK
+                                   [-q NQ]
+                                   --[no-]mac-updating
+                                   [--portmap="(port, port)[,(port, port)]"]
 
 where,
 
@@ -99,7 +102,9 @@ where,
 
 *   q NQ: A number of queues (=ports) per lcore (default is 1)
 
-*   --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default).
+*   --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)
+
+*   --portmap="(port,port)[,(port,port)]": Determines forwarding ports mapping.
 
 To run the application in linux environment with 4 lcores, 16 ports and 8 RX queues per lcore and MAC address
 updating enabled, issue the command:
@@ -108,6 +113,14 @@ updating enabled, issue the command:
 
     $ ./build/l2fwd -l 0-3 -n 4 -- -q 8 -p ffff
 
+To run the application in linux environment with 4 lcores, 4 ports, 8 RX queues
+per lcore, to forward RX traffic of ports 0 & 1 on ports 2 & 3 respectively and
+vice versa, issue the command:
+
+.. code-block:: console
+
+    $ ./build/l2fwd -l 0-3 -n 4 -- -q 8 -p f --portmap="(0,2)(1,3)"
+
 Refer to the *DPDK Getting Started Guide* for general information on running applications
 and the Environment Abstraction Layer (EAL) options.
 
@@ -194,9 +207,6 @@ in the *DPDK Programmer's Guide* - Rel 1.4 EAR and the *DPDK API Reference*.
 
 .. code-block:: c
 
-    if (rte_pci_probe() < 0)
-        rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
-
     /* reset l2fwd_dst_ports */
 
     for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
@@ -226,12 +236,6 @@ in the *DPDK Programmer's Guide* - Rel 1.4 EAR and the *DPDK API Reference*.
         rte_eth_dev_info_get((uint8_t) portid, &dev_info);
     }
 
-Observe that:
-
-*   rte_igb_pmd_init_all() simultaneously registers the driver as a PCI driver and as an Ethernet* Poll Mode Driver.
-
-*   rte_pci_probe() parses the devices on the PCI bus and initializes recognized devices.
-
 The next step is to configure the RX and TX queues.
 For each port, there is only one RX queue (only one lcore is able to poll a given port).
 The number of TX queues depends on the number of available lcores.