Hi Andiry, We already changed the vEth0 mac address [same as eth0 mac address].
For reproducing the issue, please follow below mention steps:- 1. Assign the ip address to vEth0. 2. take the port down [*ifconfig vEth0 down*] 3. up the port [*ifconfig vEth0 up*] 4. wait for 400-500 ping Packet, issue is going to reproduce. PS:- when we do port down and up, once port is up. Issue will occur. Br Amit Sharma On Thu, Sep 22, 2016 at 1:37 PM, Andriy Berestovskyy <aber at semihalf.com> wrote: > Hey Amit, > Regarding the pings. Try to set the same MAC on vEth as you have on > eth0 prior the unbind, i.e.: > > # ifconfig vEth hw ether <eth0 MAC> > > > Regarding the logs. There are compile-time options to enable debugs in > PMDs. Please see config/common_base file for the complete list. > > Not sure which driver you use, but for virtio-net you could try to > enable *_VIRTIO_DEBUG_RX/TX and then recompile the DPDK and the KNI > example. > > Regards, > Andriy > > On Mon, Sep 19, 2016 at 9:59 AM, Amit Sharma <amit.sh1094 at gmail.com> > wrote: > > Hi, > > > > While running the DPDK KNI sample application, we are facing packet drop > > after some time. > > > > *Setup:-* > > 1. 2 VMs configured using Ubuntu 14.04 > > 2. eth0 of both VMs connected to each other, and able to ping > > > > *DPDK related setup:-* > > 1. 1st VM eth0 is bound with DPDK driver[bind=uio_pci_generic] > > 2. Insert the KNI module in Linux kernel[insmod rte_kni.ko]. > > 3. Start the KNI application [*./build/kni -c 0x3 -n 4 -- -P -p 0x1 > > --config="(0,0,1)"*]. > > 4. Assign the ip address to vEth0 [*ifconfig vEth0 10.0.1.2*] > > 5. start the tcpdump on vEth0 > > 6. From 2nd VM try to ping 8.8.8.8 > > > > *Issue:- * > > ping works fine for around 400-500 packets(we reserved 2000 2MB > hugepages). > > after that ping packet is never sent back to VM2 > > on further investigation we found *rte_eth_tx_burst *always returns 0 > when > > the problem occurs > > we are investigating it further, But before that any help is welcome > > > > > > on the side note, we have another issue with log levels, to investigate > the > > above issue we were trying to enable the logs for PMD > > using the following code > > > > rte_set_log_type(RTE_LOGTYPE_PMD, 1); > > > > rte_set_log_level(RTE_LOG_DEBUG); > > > > during initialization we see some logs from PMD, But after that no logs > > during receive and transmission of packets, any idea why is that? > > > > Thanks > > Amit Sharma > > > > -- > Andriy Berestovskyy >
