* NIC is unavailable in DPDK application
@ 2022-03-28 14:18 Danil Onishchenko
2022-03-29 8:43 ` Дмитрий Степанов
0 siblings, 1 reply; 3+ messages in thread
From: Danil Onishchenko @ 2022-03-28 14:18 UTC (permalink / raw)
To: users
Hello,
I'm studying DPDK and trying to create a simple application, however it
can't see a NIC bound to DPDK.
1. Here is a list of network devices I have on my machine
$ dpdk-devbind.py --status-dev net
Network devices using kernel driver
===================================
0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
8168' if=enp1s0 drv=r8169 unused=vfio-pci *Active*
0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
2. I disable my ethernet NIC (it can't be bound to DPDK while it is
active) and bind it to vfio-pci driver successfully
$ ip link set enp1s0 down
$ dpdk-devbind.py -b vfio-pci enp1s0
3. Now dpdk-devbind.py shows that the NIC is using DPDK-compatible driver
$ dpdk-devbind.py --status-dev net
Network devices using DPDK-compatible driver
============================================
0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
8168' drv=vfio-pci unused=r8169
Network devices using kernel driver
===================================
0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
4. However when I run any example DPDK application it says that there
are no available NIC ports. For instance I wrote a simple application
int main(int argc, char *argv[])
{
int ret;
int total_ports, avail_ports;
ret = rte_eal_init(argc, argv);
if( ret < 0 )
rte_exit(EXIT_FAILURE, "EAL initialization failed\n");
total_ports = rte_eth_dev_count_total();
avail_ports = rte_eth_dev_count_avail();
printf("ETH PORTS %d %d\n", total_ports, avail_ports);
rte_eal_cleanup();
return 0;
}
and both rte_eth_dev_count_total() and rte_eth_dev_count_avail() return 0.
What am I doing wrong?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: NIC is unavailable in DPDK application
2022-03-28 14:18 NIC is unavailable in DPDK application Danil Onishchenko
@ 2022-03-29 8:43 ` Дмитрий Степанов
2022-03-31 13:20 ` Danil Onishchenko
0 siblings, 1 reply; 3+ messages in thread
From: Дмитрий Степанов @ 2022-03-29 8:43 UTC (permalink / raw)
To: Danil Onishchenko; +Cc: users
[-- Attachment #1: Type: text/plain, Size: 2528 bytes --]
Hey!
Realtek NICs are not supported by DPDK.
You can check the list of supported HW here -
https://core.dpdk.org/supported/
As a workaround you can setup virtual machine (e.g. using KVM) with virtual
NIC which is supported by DPDK (e.g. vmxnet3)
BTW: here is an article where someone tried to write his own PMD for
Realtek NIC -
https://medium.com/powerof2/writing-a-pmd-for-dpdk-56e6388467a8
вт, 29 мар. 2022 г. в 11:21, Danil Onishchenko <
danil.onishchenko.info@gmail.com>:
> Hello,
>
> I'm studying DPDK and trying to create a simple application, however it
> can't see a NIC bound to DPDK.
>
> 1. Here is a list of network devices I have on my machine
>
> $ dpdk-devbind.py --status-dev net
>
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
> 8168' if=enp1s0 drv=r8169 unused=vfio-pci *Active*
> 0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
> drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
>
> 2. I disable my ethernet NIC (it can't be bound to DPDK while it is
> active) and bind it to vfio-pci driver successfully
>
> $ ip link set enp1s0 down
> $ dpdk-devbind.py -b vfio-pci enp1s0
>
> 3. Now dpdk-devbind.py shows that the NIC is using DPDK-compatible driver
>
> $ dpdk-devbind.py --status-dev net
>
> Network devices using DPDK-compatible driver
> ============================================
> 0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
> 8168' drv=vfio-pci unused=r8169
>
> Network devices using kernel driver
> ===================================
> 0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
> drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
>
> 4. However when I run any example DPDK application it says that there
> are no available NIC ports. For instance I wrote a simple application
>
> int main(int argc, char *argv[])
> {
> int ret;
> int total_ports, avail_ports;
>
> ret = rte_eal_init(argc, argv);
> if( ret < 0 )
> rte_exit(EXIT_FAILURE, "EAL initialization failed\n");
>
> total_ports = rte_eth_dev_count_total();
> avail_ports = rte_eth_dev_count_avail();
> printf("ETH PORTS %d %d\n", total_ports, avail_ports);
>
> rte_eal_cleanup();
>
> return 0;
> }
>
> and both rte_eth_dev_count_total() and rte_eth_dev_count_avail() return 0.
>
> What am I doing wrong?
>
>
[-- Attachment #2: Type: text/html, Size: 3268 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: NIC is unavailable in DPDK application
2022-03-29 8:43 ` Дмитрий Степанов
@ 2022-03-31 13:20 ` Danil Onishchenko
0 siblings, 0 replies; 3+ messages in thread
From: Danil Onishchenko @ 2022-03-31 13:20 UTC (permalink / raw)
To: Дмитрий
Степанов
Cc: users
[-- Attachment #1: Type: text/plain, Size: 2807 bytes --]
Thank you for your reply!
On 29.03.2022 15:43, Дмитрий Степанов wrote:
> Hey!
> Realtek NICs are not supported by DPDK.
> You can check the list of supported HW here -
> https://core.dpdk.org/supported/
> As a workaround you can setup virtual machine (e.g. using KVM) with
> virtual NIC which is supported by DPDK (e.g. vmxnet3)
>
> BTW: here is an article where someone tried to write his own PMD for
> Realtek NIC -
> https://medium.com/powerof2/writing-a-pmd-for-dpdk-56e6388467a8
>
>
>
> вт, 29 мар. 2022 г. в 11:21, Danil Onishchenko
> <danil.onishchenko.info@gmail.com>:
>
> Hello,
>
> I'm studying DPDK and trying to create a simple application,
> however it
> can't see a NIC bound to DPDK.
>
> 1. Here is a list of network devices I have on my machine
>
> $ dpdk-devbind.py --status-dev net
>
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet
> Controller
> 8168' if=enp1s0 drv=r8169 unused=vfio-pci *Active*
> 0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
> drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
>
> 2. I disable my ethernet NIC (it can't be bound to DPDK while it is
> active) and bind it to vfio-pci driver successfully
>
> $ ip link set enp1s0 down
> $ dpdk-devbind.py -b vfio-pci enp1s0
>
> 3. Now dpdk-devbind.py shows that the NIC is using DPDK-compatible
> driver
>
> $ dpdk-devbind.py --status-dev net
>
> Network devices using DPDK-compatible driver
> ============================================
> 0000:01:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet
> Controller
> 8168' drv=vfio-pci unused=r8169
>
> Network devices using kernel driver
> ===================================
> 0000:02:00.0 'RTL8822BE 802.11a/b/g/n/ac WiFi adapter b822' if=wlp2s0
> drv=rtw_8822be unused=rtw88_8822be,vfio-pci *Active*
>
> 4. However when I run any example DPDK application it says that there
> are no available NIC ports. For instance I wrote a simple application
>
> int main(int argc, char *argv[])
> {
> int ret;
> int total_ports, avail_ports;
>
> ret = rte_eal_init(argc, argv);
> if( ret < 0 )
> rte_exit(EXIT_FAILURE, "EAL initialization failed\n");
>
> total_ports = rte_eth_dev_count_total();
> avail_ports = rte_eth_dev_count_avail();
> printf("ETH PORTS %d %d\n", total_ports, avail_ports);
>
> rte_eal_cleanup();
>
> return 0;
> }
>
> and both rte_eth_dev_count_total() and rte_eth_dev_count_avail()
> return 0.
>
> What am I doing wrong?
>
[-- Attachment #2: Type: text/html, Size: 4780 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-04-04 10:29 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-28 14:18 NIC is unavailable in DPDK application Danil Onishchenko
2022-03-29 8:43 ` Дмитрий Степанов
2022-03-31 13:20 ` Danil Onishchenko
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).