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h1. DPDK

Traitement haute performance en logiciel, 10 Gbit/s en petit paquets line rate

h2. Liens

* http://dpdk.org

* [[AtelierPPS2012]]

h2. Misc

* Intel PCI id http://www.intel.com/support/network/sb/cs-012904.htm

* http://www.intel.com/content/www/us/en/ethernet-controllers/ethernet-products.html?iid=embed_portal+hdprod_ethernet#s1=Gigabit%20Ethernet&s2=all&s3=all

* Intel Pro/1000 PT vs CT http://hardforum.com/showthread.php?t=1386042

* http://images.ncix.com/forumimages/C9864B87-583B-10FB-B0DE80742781CE07.jpg

* http://www.intel.com/content/www/us/en/ethernet-controllers/ethernet-controllers.html#s1=all&s2=82572EI&s3=all

* http://www.intel.com/content/www/us/en/ethernet-controllers/ethernet-controllers.html#s1=all&s2=82574L&s3=all

* https://github.com/Pktgen/Pktgen-DPDK

* Evaluating the Suitability of Server Network Cards for Software Routers http://kfall.net/ucbpage/papers/snc.pdf

h2. Note sileht dpdk:

Extract from: http://www.intel.com/content/dam/www/public/us/en/documents/guides/intel-dpdk-getting-started-guide.pdf

h3. configuration hugepages: 

* 2M (1024*2k): hugepages=1024 (at runtime: echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages)

* 4G (4x1G): default_hugepagesz=1G hugepagesz=1G hugepages=4 (only works at boot time via grub)

<pre>

mkdir /mnt/huge

mount -t hugetlbfs nodev /mnt/huge

</pre>

h3. Compile and load modules: 

_Note: source tools/setup.sh is a helper tools for this but works only with IGB driver not e1000e_

<pre>

# apt-get install make gcc linux-headers-amd64

# make config T=x86_64-default-linuxapp-gcc

# make T=x86_64-default-linuxapp-gcc

..

Build complete

# modprobe uio  (I think this is not useful)

# insmod build/kmod/rte_kni.ko (I think this is not useful)

# insmod build/kmod/igb_uio.ko (I think this is not useful)

# ./tools/pci_unbind.py --status

Network devices using IGB_UIO driver

====================================

<none>

Network devices using kernel driver

===================================

0000:00:19.0 '82579LM Gigabit Network Connection' if=eth1 drv=e1000e unused=<none>

0000:01:00.0 '82599EB 10-Gigabit SFI/SFP+ Network Connection' if=eth6 drv=ixgbe unused=igb_uio *Active*

0000:01:00.1 '82599EB 10-Gigabit SFI/SFP+ Network Connection' if=eth7 drv=ixgbe unused=igb_uio

0000:04:00.0 '82571EB Gigabit Ethernet Controller' if=eth2 drv=e1000e unused=igb_uio *Active*

0000:04:00.1 '82571EB Gigabit Ethernet Controller' if=eth3 drv=e1000e unused=igb_uio

0000:05:00.0 '82571EB Gigabit Ethernet Controller' if=eth4 drv=e1000e unused=igb_uio

0000:05:00.1 '82571EB Gigabit Ethernet Controller' if=eth5 drv=e1000e unused=igb_uio

0000:06:00.0 'RTL8111/8168B PCI Express Gigabit Ethernet controller' if=eth0 drv=r8169 unused=<none> *Active*

Other network devices

=====================

<none>

</pre>

test sur eth7:

<pre>

# ip link set eth7 down

# ./tools/pci_unbind.py --bind=igb_uio 0000:01:00.1

</pre>

h3. Prepare examples programs:

<pre>

# export RTE_SDK=/root/sileht/dpdk-1.6.0r1

# export RTE_TARGET=build

# cd /root/sileht/

# cp -r $RTE_SDK/examples/helloworld my_rte_app

# cd my_rte_app

# make

</pre>

h3. Tests

<pre>

</pre>