doc: update KNI guides

Update KNI documentation to reflect current ethtool support.

Replace references to out dated tools (ifconfig) with
modern iproute2.  Tshark is a better replacement for tcpdump.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/doc/guides/prog_guide/kernel_nic_interface.rst b/doc/guides/prog_guide/kernel_nic_interface.rst
index daf87f4..5afd05c 100644 (file)
--- a/doc/guides/prog_guide/kernel_nic_interface.rst
+++ b/doc/guides/prog_guide/kernel_nic_interface.rst
@@ -290,7 +290,8 @@ It then puts the mbuf back in the cache.
 Ethtool
 -------
 
-Ethtool is a Linux-specific tool with corresponding support in the kernel
-where each net device must register its own callbacks for the supported operations.
-The current implementation uses the igb/ixgbe modified Linux drivers for ethtool support.
-Ethtool is not supported in i40e and VMs (VF or EM devices).
+Ethtool is a Linux-specific tool with corresponding support in the kernel.
+The current version of kni provides minimal ethtool functionality
+including querying version and link state. It does not support link
+control, statistics, or dumping device registers.
+

diff --git a/doc/guides/sample_app_ug/kernel_nic_interface.rst b/doc/guides/sample_app_ug/kernel_nic_interface.rst
index a7e549d..aac4ebd 100644 (file)
--- a/doc/guides/sample_app_ug/kernel_nic_interface.rst
+++ b/doc/guides/sample_app_ug/kernel_nic_interface.rst
@@ -21,14 +21,14 @@ The FIFO queues contain pointers to data packets in the DPDK. This:
 
 *   Provides a faster mechanism to interface with the kernel net stack and eliminates system calls
 
-*   Facilitates the DPDK using standard Linux* userspace net tools (tcpdump, ftp, and so on)
+*   Facilitates the DPDK using standard Linux* userspace net tools (tshark, rsync, and so on)
 
 *   Eliminate the copy_to_user and copy_from_user operations on packets.
 
 The Kernel NIC Interface sample application is a simple example that demonstrates the use
 of the DPDK to create a path for packets to go through the Linux* kernel.
 This is done by creating one or more kernel net devices for each of the DPDK ports.
-The application allows the use of standard Linux tools (ethtool, ifconfig, tcpdump) with the DPDK ports and
+The application allows the use of standard Linux tools (ethtool, iproute, tshark) with the DPDK ports and
 also the exchange of packets between the DPDK application and the Linux* kernel.
 
 The Kernel NIC Interface sample application requires that the
@@ -220,13 +220,13 @@ Enable KNI interface and assign an IP address:
 
 .. code-block:: console
 
-    # ifconfig vEth0_0 192.168.0.1
+    # ip addr add dev vEth0_0 192.168.0.1
 
 Show KNI interface configuration and statistics:
 
 .. code-block:: console
 
-    # ifconfig vEth0_0
+    # ip -s -d addr show vEth0_0
 
 The user can also check and reset the packet statistics inside the ``kni``
 application by sending the app the USR1 and USR2 signals:
@@ -234,16 +234,16 @@ application by sending the app the USR1 and USR2 signals:
 .. code-block:: console
 
     # Print statistics
-    # kill -SIGUSR1 `pidof kni`
+    # pkill -USR1 kni
 
     # Zero statistics
-    # kill -SIGUSR2 `pidof kni`
+    # pkill -USR2 kni
 
 Dump network traffic:
 
 .. code-block:: console
 
-    # tcpdump -i vEth0_0
+    # tshark -n -i vEth0_0
 
 The normal Linux commands can also be used to change the MAC address and
 MTU size used by the physical NIC which corresponds to the KNI interface.
@@ -254,13 +254,19 @@ Change the MAC address:
 
 .. code-block:: console
 
-    # ifconfig vEth0_0 hw ether 0C:01:02:03:04:08
+    # ip link set dev vEth0_0 lladdr 0C:01:02:03:04:08
 
 Change the MTU size:
 
 .. code-block:: console
 
-    # ifconfig vEth0_0 mtu 1450
+    # ip link set dev vEth0_0 mtu 1450
+
+Limited ethtool support:
+
+.. code-block:: console
+
+    # ethtool -i vEth0_0
 
 When the ``kni`` application is closed, all the KNI interfaces are deleted
 from the Linux kernel.