Hi Ick-Sung, You will need to use igb_uio for DPDK. That is the Poll mode driver.
ixgbe is for the kernel, and do not support DPDK. Regards, Choi, Sy Jong Platform Application Engineer -----Original Message----- From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of ??? Sent: Wednesday, October 21, 2015 10:04 AM To: Kyle Larose Cc: dev at dpdk.org Subject: Re: [dpdk-dev] When I run test-pmd, most of received packets(loop-backed packet) have RX-error. Dear Kyle Larose. Thank you very much for your precious advice and answer. I will try your suggestions. I have a question. Can I use igb_uio driver in DPDK? When I stalled the network device driver in DPDK. I used the following commands and I see that the 10GbE devices have igb_uio device driver. sudo /sbin/modprobe uio sudo /sbin/insmod $RTE_SDK/$RTE_TARGET/kmod/igb_uio.ko Network devices using DPDK-compatible driver ============================================ 0000:02:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection' drv=igb_uio unused= 0000:02:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection' drv=igb_uio unused= Network devices using kernel driver =================================== 0000:00:19.0 'Ethernet Connection I217-V' if=eth0 drv=e1000e unused=igb_uio *Active* 0000:04:00.0 '82572EI Gigabit Ethernet Controller (Copper)' if=eth3 drv=e1000e unused=igb_uio The network device driver seems to be igb_uio. If I bind the network device to ixgbe using the following commands, the network device seems to be connected to kernel, not the DPDK. sudo ${RTE_SDK}/tools/dpdk_nic_bind.py -b ixgbe 0000:02:00.0 && echo "OK" sudo ${RTE_SDK}/tools/dpdk_nic_bind.py -b ixgbe 0000:02:00.1 && echo "OK" Can I use ixgbe driver for DPDK? If I can, would you tell me how can I specify it? Thank you very much for your precious advices. Sincerely Yours, Ick-Sung Choi. -----Original Message----- From: "Kyle Larose"<eomerea...@gmail.com> To: "???"<pnk003 at naver.com>; Cc: <dev at dpdk.org>; Sent: 2015-10-20 (?) 22:50:43 Subject: Re: [dpdk-dev] When I run test-pmd, most of received packets(loop-backed packet) have RX-error. On Tue, Oct 20, 2015 at 2:12 AM, ??? <pnk003 at naver.com> wrote: > Dear DPDK experts. > > Thank you very much for your best great efforts and precious answers. > > > When I run test-pmd, most of received packets are RX-error. > > The computer has two 10GbE ports Intel NIC and the two ports are loop-backed each other. > > The result shows that the loop-backed packets have rx-error occured from ethernet device port. > > The rx-error ( ierrors) seems to be counted by rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats) function in ~/dpdk/lib/librte_ether/rte_ethdev.c > > Then this rte_eth_stats_get() function calls (*dev->dev_ops->stats_get)(dev, stats); > > However, I can't find and trace the function (*dev->dev_ops->stats_get)(). > > Would you tell me how can I find the function? > > Would you tell me why this receive errors occurs for what reasons? > > > I tested it in two xeon computers with different OS. > > Fedora 22 (linux kernel version 4.2.3-200.fc22.x86_64, DPDK 2.1.0). > Ubuntu 14.04.1 LTS(linux kernel version : 3.13.0-34-generic, DPDK 2.1.0). > > Both experiments show the same result with rx-errors. > > I will really appreciate if I can be given any advice and answers. > > Thank you very much. > > Sincerely Yours, > > Ick-Sung Choi. > Hello, I don't know the reason for your errors, but I can probably help with the function. I usually do this in two ways. One way is to identify the driver, and then look for instances of "struct eth_dev_ops" in it. For example, if you have an ixgbe/82599/etc, the driver is the ixgbe. Searching in the directory for it, you find this: http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/ixgbe_ethdev.c#n389 Another alternative is to attach to your running process with gdb, and print the dev struct. gdb will typically map the pointers contained therein to their symbolic names.
