= Changelog =
= DPDK Basic =
Before using DPDK, you need to load DPDK kernel modules (uio, igb_uio).
Commands:
modprobe uio
insmod ${DPDK}/x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
After load uio, igb_uio, unbind network device driver from ixgbe to igb_uio.
commands(if you want to unbind interface card p2p1):
python ${DPDK}/tools/dpdk_nic_bind.py --bind=igb_uio p2p1
= Build =
export RTE_SDK=<DPDK SDK path>
export RTE_TARGET=x86_64-native-linuxapp-gcc
make
To use multiqueues, configure different rth_eth_conf.
File: netflow-init.h
In 1/10G Ethernet(ixgbe), rss_hf = ETH_RSS_IPV4,
In 40G Ethernet(i40e), rss_hf = ETH_RSS_NONF_IPV4_UDP | ETH_RSS_NONF_IPV4_TCP,
code:
static const struct rte_eth_conf port_conf = {
.rxmode = {
.mq_mode = ETH_MQ_RX_RSS,
.split_hdr_size = 0,
.header_split = 0, /**< Header Split disabled */
.hw_ip_checksum = 0, /**< IP checksum offload disabled */
.hw_vlan_filter = 0, /**< VLAN filtering disabled */
.jumbo_frame = 0, /**< Jumbo Frame Support disabled */
.hw_strip_crc = 0, /**< CRC stripped by hardware */
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = ETH_RSS_IPV4 | ETH_RSS_IPV6, /* 1/10G RSS offload features */
//.rss_hf = ETH_RSS_NONF_IPV4_UDP |
// ETH_RSS_NONF_IPV4_TCP, /* 40G RSS offload features */
},
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
};
= Run =
To run, command line interpreter, run 2 threads
ex) 2 lcore
./build/dprobe -c 0x3 -n 2 -- -p 0x1 -H 127.0.0.1 -P 2055 -q 2
-H : Netflow Collector IP
-P : Netflow Collector Port Number
-q : Number of Receive queues
./build/dprobe -c 0x15 -n 4 -- -m "2:0.0,4:0.1" -q 2
desc: lcore(2) processes port(0) queue(0)
lcore(4) processes port(0) queue(1)
= Reference =
* DPDK build : http://sunshout.tistory.com/1556
triplekill/netflow-dpdk
Netflow is a key component for network traffic monitoring. As high speed technologies such as 10 Gbps or 40 Gbps links are common in a backbone network, it is impossible to monitor traffic via conventional software like nProbe. DPDK is next solution for monitoring high speed network with commodity hardware.
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