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Copyright (c) 2014, Linaro Limited
All rights reserved.
SPDX-License-Identifier: BSD-3-Clause
ODP-DPDK:
---------
This effort is to port ODP on top of DPDK and use DPDK as the
accelerator for all intel NIC's. Pre-requisite is DPDK should be cloned and
compiled. DPDK and ODP was compiled and tested on Ubuntu 14.04
3.13.0-29-generic kernel.
# To Clone DPDK
$ git clone http://92.243.14.124/git/dpdk ./<dpdk-dir>
# we support only 1.6.0r2 of DPDK for now
$ git tag -l -- will list all the tags available
$ git checkout -b 1.6.0 tags/v1.6.0r2
# Please refer to http://dpdk.org/doc for more details on how to build
# DPDK. Getting started guide for Linux might be of help.
# Best effort is done to provide some help on DPDK cmds below for Ubuntu,
# where it was compiled and tested.
# Please refer "How to setup and compile DPDK" section in this document
# To compile ODP with linux-dpdk
$ export RTE_SDK=<dpdk-dir>
# For example
$ export RTE_SDK=/root/dpdk
$ export RTE_TARGET=x86_64-default-linuxapp-gcc
# RTE_TARGET is the configuration used while building DPDK
$ cd <odp-dir>
$ ./bootstrap
$ ./configure --with-platform=linux-dpdk --with-sdk-install-path=$RTE_SDK/$RTE_TARGET
$ make
# App commands to test
l2fwding app - sudo ./example/l2fwd/odp_l2fwd -i 0,1 -m 0 -c 2
loopback app - sudo ./example/packet/odp_pktio -i 0,1 -m 0 -c 2
-i 0,1 - interface number
-m 0 - burst mode
-c 2 - number of cpus
How to setup and compile DPDK:
==============================
$ cd <dpdk-dir>
# This has to be done only once.
$ make config T=x86_64-default-linuxapp-gcc O=x86_64-default-linuxapp-gcc
# set CONFIG_RTE_BUILD_COMBINE_LIBS=y in .config file
# Note: if non-intel SFP's are used in IXGBE, then set CONFIG_RTE_LIBRTE_IXGBE_ALLOW_UNSUPPORTED_SFP=y in .config file
$ make install T=x86_64-default-linuxapp-gcc EXTRA_CFLAGS="-fPIC"
# If "conflicting types for skb_set_hash" error happens during DPDK
# build, then please knock-off skb_set_hash function from kcompat.h as
# shown below. This was seen in Ubuntu 3.13.0-30-generic.
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
index 19df483..78a794a 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
@@ -3845,11 +3845,6 @@ static inline struct sk_buff *__kc__vlan_hwaccel_put_tag(struct sk_buff *skb,
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0) )
#ifdef NETIF_F_RXHASH
#define PKT_HASH_TYPE_L3 0
-static inline void
-skb_set_hash(struct sk_buff *skb, __u32 hash, __always_unused int type)
-{
- skb->rxhash = hash;
-}
#endif /* NETIF_F_RXHASH */
#endif /* < 3.14.0 */
# this only ensures building DPDK, but traffic is not tested with this
# build yet. It is upto the user to test it.
# To reserve huge pages, which is needed for DPDK, execute following command
$ sudo sh -c 'echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages'
# If you are running on a multi-node machine then, hugepages should be reserved on each node
$ ls /sys/devices/system/node
$ sudo sh -c 'echo 1024 > /sys/devices/system/node/node*/hugepages/hugepages-2048kB/nr_hugepages'
$ sudo mkdir /mnt/huge
$ sudo mount -t hugetlbfs nodev /mnt/huge
# To load uio driver
$ sudo /sbin/modprobe uio
$ ulimit -Sn 2048
$ cd <dpdk-dir>
$ sudo insmod ./build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.ko
$ sudo rmmod ixgbe
$ sudo modprobe ixgbe
# If the SFP's used are non-intel, then
$ sudo modprobe ixgbe allow_unsupported_sfp=1
$ cd <dpdk-dir>
$ ./tools/igb_uio_bind.py --status
# this command produces output that is something similar as given below
Network devices using IGB_UIO driver
====================================
0000:05:00.0 'Ethernet 10G 2P X520 Adapter' drv=igb_uio unused=
0000:05:00.1 'Ethernet 10G 2P X520 Adapter' drv=igb_uio unused=
Network devices using kernel driver
===================================
0000:01:00.0 'NetXtreme II BCM5709 Gigabit Ethernet' if=eth0 drv=bnx2 unused=<none> *Active*
0000:01:00.1 'NetXtreme II BCM5709 Gigabit Ethernet' if=eth1 drv=bnx2 unused=<none>
0000:07:00.0 'T320 10GbE Dual Port Adapter' if=eth2,eth3 drv=cxgb3 unused=<none>
Other network devices
=====================
<none>
# Now you should look for pci id listed and give it in the following command
# in place of 05:00.X
# To give the interfaces to DPDK, use following command
$ sudo ./tools/igb_uio_bind.py --bind=igb_uio 05:00.0
$ sudo ./tools/igb_uio_bind.py --bind=igb_uio 05:00.1
# To restore it back to kernel, use following command
$ sudo ./tools/igb_uio_bind.py --bind=ixgbe 05:00.0
$ sudo ./tools/igb_uio_bind.py --bind=ixgbe 05:00.1
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