doc: refer PMD compile/test section from ena guide

[dpdk.git] / doc / guides / nics / i40e.rst

diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst
index b890613..d5efa3f 100644 (file)
--- a/doc/guides/nics/i40e.rst
+++ b/doc/guides/nics/i40e.rst
@@ -105,11 +105,6 @@ Please note that enabling debugging options may affect system performance.
   Toggle the use of Vector PMD instead of normal RX/TX path.
   To enable vPMD for RX, bulk allocation for Rx must be allowed.
 
-- ``CONFIG_RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE`` (default ``y``)
-
-  Toggle to enable RX ``olflags``.
-  This is only meaningful when Vector PMD is used.
-
 - ``CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC`` (default ``n``)
 
   Toggle to use a 16-byte RX descriptor, by default the RX descriptor is 32 byte.
@@ -177,7 +172,7 @@ devices managed by ``librte_pmd_i40e`` in the Linux operating system.
 
    .. code-block:: console
 
-      ./x86_64-native-linuxapp-gcc/app/testpmd -c 0xf -n 4 -w 83:00.0 -- -i
+      ./x86_64-native-linuxapp-gcc/app/testpmd -l 0-3 -n 4 -w 83:00.0 -- -i
 
    Example output:
 
@@ -268,7 +263,7 @@ To start ``testpmd``, and add vlan 10 to port 0:
 
 .. code-block:: console
 
-    ./app/testpmd -c ffff -n 4 -- -i --forward-mode=mac
+    ./app/testpmd -l 0-15 -n 4 -- -i --forward-mode=mac
     ...
 
     testpmd> set promisc 0 off
@@ -303,7 +298,7 @@ Start ``testpmd`` with ``--disable-rss`` and ``--pkt-filter-mode=perfect``:
 
 .. code-block:: console
 
-   ./app/testpmd -c ffff -n 4 -- -i --disable-rss --pkt-filter-mode=perfect \
+   ./app/testpmd -l 0-15 -n 4 -- -i --disable-rss --pkt-filter-mode=perfect \
                  --rxq=8 --txq=8 --nb-cores=8 --nb-ports=1
 
 Add a rule to direct ``ipv4-udp`` packet whose ``dst_ip=2.2.2.5, src_ip=2.2.2.3, src_port=32, dst_port=32`` to queue 1:
@@ -445,8 +440,8 @@ is used as the VF driver, DPDK cannot choose 16 byte receive descriptor. That
 is to say, user should keep ``CONFIG_RTE_LIBRTE_I40E_16BYTE_RX_DESC=n`` in
 config file.
 
-Link down with i40e kernel driver after DPDK application exist
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Link down with i40e kernel driver after DPDK application exit
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 After DPDK application quit, and the device is bound back to Linux i40e
 kernel driver, the link cannot be up after ``ifconfig <dev> up``.
@@ -467,3 +462,24 @@ Incorrect Rx statistics when packet is oversize
 When a packet is over maximum frame size, the packet is dropped.
 However the Rx statistics, when calling `rte_eth_stats_get` incorrectly
 shows it as received.
+
+VF & TC max bandwidth setting
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The per VF max bandwidth and per TC max bandwidth cannot be enabled in parallel.
+The dehavior is different when handling per VF and per TC max bandwidth setting.
+When enabling per VF max bandwidth, SW will check if per TC max bandwidth is
+enabled. If so, return failure.
+When enabling per TC max bandwidth, SW will check if per VF max bandwidth
+is enabled. If so, disable per VF max bandwidth and continue with per TC max
+bandwidth setting.
+
+TC TX scheduling mode setting
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+There're 2 TX scheduling modes for TCs, round robin and strict priority mode.
+If a TC is set to strict priority mode, it can consume unlimited bandwidth.
+It means if APP has set the max bandwidth for that TC, it comes to no
+effect.
+It's suggested to set the strict priority mode for a TC that is latency
+sensitive but no consuming much bandwidth.