X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fsample_app_ug%2Fkernel_nic_interface.rst;h=aac4ebd8d4ffe0ef96076478edf02ecd8fca48a9;hb=176bb37ca6f344e6765d0ce4b99b88950b618ce1;hp=f8fe17bd08eb8a8abee930379b2e50cbbc0108aa;hpb=218c4e68c1d9bd4a9281bc1dc4d0ab89859083bf;p=dpdk.git diff --git a/doc/guides/sample_app_ug/kernel_nic_interface.rst b/doc/guides/sample_app_ug/kernel_nic_interface.rst index f8fe17bd08..aac4ebd8d4 100644 --- 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. @@ -254,23 +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 -If DPDK is compiled with ``CONFIG_RTE_KNI_KMOD_ETHTOOL=y`` and an Intel -NIC is used, the user can use ``ethtool`` on the KNI interface as if it -were a normal Linux kernel interface. - -Displaying the NIC registers: +Limited ethtool support: .. code-block:: console - # ethtool -d vEth0_0 + # ethtool -i vEth0_0 When the ``kni`` application is closed, all the KNI interfaces are deleted from the Linux kernel.