* [dpdk-dev] I350 drops packet on rte_eth_tx_burst() @ 2014-04-11 5:59 sabu kurian 2014-04-11 7:56 ` Thomas Monjalon 0 siblings, 1 reply; 6+ messages in thread From: sabu kurian @ 2014-04-11 5:59 UTC (permalink / raw) To: dev Hi friends, Even after installing all the required igb drivers for I350 (the device seems to work perfect on the host machine), am unable to transmit packets using the same device (on Intel DPDK) using ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool, burst_size); At times it might transfer 10 or 15 packets in a burst_size of 64 At times all packets are getting dropped I'm using 64 bit Ubuntu 12.04 Kernel : 3.2.0-29-generic I have built the kernel and library modules(Intel DPDK) with make config T=x86_64-default-linuxapp-gcc make loaded modules with sudo modprobe uio sudo insmod ./x86_64-default-linuxapp-gcc/kmod/igb_uio.ko Any help would be appreciated. Thanks and regards ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] I350 drops packet on rte_eth_tx_burst() 2014-04-11 5:59 [dpdk-dev] I350 drops packet on rte_eth_tx_burst() sabu kurian @ 2014-04-11 7:56 ` Thomas Monjalon 2014-04-11 10:04 ` sabu kurian 0 siblings, 1 reply; 6+ messages in thread From: Thomas Monjalon @ 2014-04-11 7:56 UTC (permalink / raw) To: sabu kurian; +Cc: dev Hi, 2014-04-11 11:29, sabu kurian: > Even after installing all the required igb drivers for I350 (the device > seems to work perfect on the host machine), am unable to transmit packets > using the same device (on Intel DPDK) using Please follow this documentation to setup your environment and do some basic tests with testpmd: http://dpdk.org/doc/quick-start -- Thomas ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] I350 drops packet on rte_eth_tx_burst() 2014-04-11 7:56 ` Thomas Monjalon @ 2014-04-11 10:04 ` sabu kurian 2014-04-11 10:04 ` sabu kurian 0 siblings, 1 reply; 6+ messages in thread From: sabu kurian @ 2014-04-11 10:04 UTC (permalink / raw) To: Thomas Monjalon; +Cc: dev Hi Friends, Thanks for the reply. This is the portion of the code where the I350 fails to send packet: for(;;){ ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool, burst_size); if (unlikely(ret < burst_size)) { for(j=ret;j<(burst_size-ret);j++) { rte_pktmbuf_free(m_pool[j]); } } else { lcore_stats[lcore_id].tx += (uint64_t)burst_size; } } all of the m_pool were allocated using for(j=0;j<burst_size;j++) { m_pool[j] = rte_pktmbuf_alloc(pktmbuf_pool); } On Fri, Apr 11, 2014 at 1:26 PM, Thomas Monjalon <thomas.monjalon@6wind.com>wrote: > Hi, > > 2014-04-11 11:29, sabu kurian: > > Even after installing all the required igb drivers for I350 (the device > > seems to work perfect on the host machine), am unable to transmit packets > > using the same device (on Intel DPDK) using > > Please follow this documentation to setup your environment and do some > basic > tests with testpmd: > http://dpdk.org/doc/quick-start > > -- > Thomas > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] I350 drops packet on rte_eth_tx_burst() 2014-04-11 10:04 ` sabu kurian @ 2014-04-11 10:04 ` sabu kurian 2014-04-13 5:14 ` Chae-yong Chong 0 siblings, 1 reply; 6+ messages in thread From: sabu kurian @ 2014-04-11 10:04 UTC (permalink / raw) To: Thomas Monjalon; +Cc: dev To add to my previous mail..... only upto 544 packets are actually sent... then it fails On Fri, Apr 11, 2014 at 3:34 PM, sabu kurian <sabu2kurian@gmail.com> wrote: > Hi Friends, > > Thanks for the reply. > > This is the portion of the code where the I350 fails to send packet: > > for(;;){ > > ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool, > burst_size); > > if (unlikely(ret < burst_size)) { > for(j=ret;j<(burst_size-ret);j++) > { > rte_pktmbuf_free(m_pool[j]); > } > } > else > { > > lcore_stats[lcore_id].tx += (uint64_t)burst_size; > } > > } > > all of the m_pool were allocated using > > for(j=0;j<burst_size;j++) > { > m_pool[j] = rte_pktmbuf_alloc(pktmbuf_pool); > > } > > > > > On Fri, Apr 11, 2014 at 1:26 PM, Thomas Monjalon < > thomas.monjalon@6wind.com> wrote: > >> Hi, >> >> 2014-04-11 11:29, sabu kurian: >> > Even after installing all the required igb drivers for I350 (the device >> > seems to work perfect on the host machine), am unable to transmit >> packets >> > using the same device (on Intel DPDK) using >> >> Please follow this documentation to setup your environment and do some >> basic >> tests with testpmd: >> http://dpdk.org/doc/quick-start >> >> -- >> Thomas >> > > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] I350 drops packet on rte_eth_tx_burst() 2014-04-11 10:04 ` sabu kurian @ 2014-04-13 5:14 ` Chae-yong Chong 2014-04-13 6:08 ` sabu kurian 0 siblings, 1 reply; 6+ messages in thread From: Chae-yong Chong @ 2014-04-13 5:14 UTC (permalink / raw) To: sabu kurian; +Cc: dev I think if you just forward the packets there should be no tx failure. If you instruct the core to send the packet in burst, the tx rate is higher than 10Gbps as the core is too powerful. ---Sent from Boxer | http://getboxer.com To add to my previous mail..... only upto 544 packets are actually sent... then it fails On Fri, Apr 11, 2014 at 3:34 PM, sabu kurian <sabu2kurian@gmail.com> wrote: > Hi Friends, > > Thanks for the reply. > > This is the portion of the code where the I350 fails to send packet: > > for(;;){ > > ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool, > burst_size); > > if (unlikely(ret < burst_size)) { > for(j=ret;j<(burst_size-ret);j++) > { > rte_pktmbuf_free(m_pool[j]); > } > } > else > { > > lcore_stats[lcore_id].tx += (uint64_t)burst_size; > } > > } > > all of the m_pool were allocated using > > for(j=0;j<burst_size;j++) > { > m_pool[j] = rte_pktmbuf_alloc(pktmbuf_pool); > > } > > > > > On Fri, Apr 11, 2014 at 1:26 PM, Thomas Monjalon < > thomas.monjalon@6wind.com> wrote: > >> Hi, >> >> 2014-04-11 11:29, sabu kurian: >> > Even after installing all the required igb drivers for I350 (the device >> > seems to work perfect on the host machine), am unable to transmit >> packets >> > using the same device (on Intel DPDK) using >> >> Please follow this documentation to setup your environment and do some >> basic >> tests with testpmd: >> http://dpdk.org/doc/quick-start >> >> -- >> Thomas >> > > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] I350 drops packet on rte_eth_tx_burst() 2014-04-13 5:14 ` Chae-yong Chong @ 2014-04-13 6:08 ` sabu kurian 0 siblings, 0 replies; 6+ messages in thread From: sabu kurian @ 2014-04-13 6:08 UTC (permalink / raw) To: Chae-yong Chong; +Cc: dev Hai Chae-yong Chong, Thanks on the reply. But I'm nor actually forwarding packets. I'm crafting my own packets in mbuf's (74 byte packets all) and sending it using ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool,burst_size); When burst_size is 1, it does work. Work in the sense the NIC will continue with sending packets, at a little over 50 percent of the link rate. For 1000 Mbps link rate .....The observed transmit rate of the NIC is 580 Mbps (using Intel DPDK). When the NIC sends out some hundred thousand packets , billions are getting dropped as well. I don't care about the billions getting dropped, but it should be possible to achieve at least 900 Mbps transmit rate with Intel DPDK and I350 on 1 Gbps link. Could someone help me out on this ? Thanks and regards On Sun, Apr 13, 2014 at 10:44 AM, Chae-yong Chong <cychong@gmail.com> wrote: > I think if you just forward the packets there should be no tx failure. If > you instruct the core to send the packet in burst, the tx rate is higher > than 10Gbps as the core is too powerful. > > --- > Sent from Boxer | http://getboxer.com <http://bit.ly/1hRkK2W> > On April 11, 2014 at 7:16:47 PM GMT+9, sabu kurian <sabu2kurian@gmail.com> > wrote: > > To add to my previous mail..... > > only upto 544 packets are actually sent... then it fails > > > On Fri, Apr 11, 2014 at 3:34 PM, sabu kurian wrote: > > > Hi Friends, > > > > Thanks for the reply. > > > > This is the portion of the code where the I350 fails to send packet: > > > > for(;;){ > > > > ret = rte_eth_tx_burst(port_ids[lcore_id], 0, m_pool, > > burst_size); > > > > if (unlikely(ret < burst_size)) { > > for(j=ret;j<(burst_size-ret);j++) > > { > > rte_pktmbuf_free(m_pool[j]); > > } > > } > > else > > { > > > > lcore_stats[lcore_id].tx += (uint64_t)burst_size; > > } > > > > } > > > > all of the m_pool were allocated using > > > > for(j=0;j> { > > > m_pool[j] = rte_pktmbuf_alloc(pktmbuf_pool); > > > > } > > > > > > > > > > On Fri, Apr 11, 2014 at 1:26 PM, Thomas Monjalon < > > thomas.monjalon@6wind.com> wrote: > > > >> Hi, > >> > >> 2014-04-11 11:29, sabu kurian: > >> > Even after installing all the required igb drivers for I350 (the > device > >> > seems to work perfect on the host machine), am unable to transmit > >> packets > >> > using the same device (on Intel DPDK) using > >> > >> Please follow this documentation to setup your environment and do some > >> basic > >> tests with testpmd: > >> http://dpdk.org/doc/quick-start > >> > >> -- > >> Thomas > >> > > > > > > ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-04-13 6:07 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-04-11 5:59 [dpdk-dev] I350 drops packet on rte_eth_tx_burst() sabu kurian 2014-04-11 7:56 ` Thomas Monjalon 2014-04-11 10:04 ` sabu kurian 2014-04-11 10:04 ` sabu kurian 2014-04-13 5:14 ` Chae-yong Chong 2014-04-13 6:08 ` sabu kurian
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