Hi,
I want to step into the mellanox dpdk topic. I follow the steps from 21. MLX5 poll mode driver — Data Plane Development Kit 17.11.2 documentation 21. MLX5 poll mode driver — Data Plane Development Kit 17.11.10 documentation
So I downloaded the OFED software version 4.2-1.2.0.0 for ubuntu16.04-x86_64 (found here http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux
./mlnxofedinstall --upstream-libs --dpdk
This allows me to compile DPDK successfully.
Then the link above tells me to use the command “ibv_devinfo” and also the command “mlxconfig”. But both are not installed.
What did I wrong ?
Thank you!
Hi,
The problem occurs when I build DPDK itself. Compilation of the mellanox DPDK Driver (drivers/net/mlx5) brings the error.
If I compile DPDK with
The error is:
“ld: cannot find -libverbs”
Martin
march
June 4, 2018, 11:07am
3
Hi,
Can you try to build your application with LDFLAGS=-libverbs
Because I don’t know your testapp, I assume you built it with make once you configured it.
So try:
make LDFLAGS=-libverbs
BR
Marc
I also tried following steps
./mlnxofedinstall --dpdk --upstream-libs
build dpdk + test app
./mlnxofedinstall --all
start testapp
But got this error:
/build/app# ./testapp
./testapp: /usr/lib/libmlx5.so.1: no version information available (required by ./testapp)
./testapp /usr/lib/libmlx5.so.1: no version information available (required by ./testapp)
./testapp: /usr/lib/libmlx5.so.1: no version information available (required by ./testapp)
EAL: Detected 96 lcore(s)
EAL: Probing VFIO support…
EAL: PCI device 0000:d8:00.0 on NUMA socket 1
EAL: probe driver: 15b3:1019 net_mlx5
PMD: net_mlx5: PCI information matches, using device “mlx5_0” (SR-IOV: false)
PMD: net_mlx5: 1 port(s) detected
PMD: net_mlx5: MPS is disabled
PMD: net_mlx5: port 1 MAC address is 50:6b:4b:xy:00:11
./testapp: relocation error: ./testapp: symbol mlx5dv_set_context_attr, version MLX5_1.2 not defined in file libmlx5.so.1 with link time reference
march
June 4, 2018, 10:29am
5
Hi,
Can you check two things:
rpm -qa | grep rdma
and check that the rdma-core package is installed as --upstream-libs must do it.
/etc/init.d/openibd status
Check that the driver is started correctly.
I would suggest to install the driver w/o any option to see that it works correctly, because the options you used installs the minimum required to run dpdk.
Regards
Marc
Hi Marc,
If I do the installation with only “./mlnxofedinstall” (without any option) I can not compile DPDK:
== Build drivers/net/mlx5
CC mlx5.o
/root/dpdk-stable/drivers/net/mlx5/mlx5.c: In function ‘mlx5_pci_probe’:
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:796:21: error: ‘struct ibv_device_attr_ex’ has no member named ‘device_cap_flags_ex’
!!(device_attr_ex.device_cap_flags_ex &
^
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:797:7: error: ‘IBV_DEVICE_RAW_IP_CSUM’ undeclared (first use in this function)
IBV_DEVICE_RAW_IP_CSUM);
^
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:797:7: note: each undeclared identifier is reported only once for each function it appears in
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:816:18: error: ‘struct ibv_device_attr_ex’ has no member named ‘rss_caps’
device_attr_ex.rss_caps.max_rwq_indirection_table_size;
…
march
June 4, 2018, 12:56pm
7
Hi,
Please check if rdma-core package is installed.
apt list --installed | grep rdma-core
If this package is not installed, installed it by
apt-get install rdma-core
Thanks
Marc
march
June 7, 2018, 1:41pm
8
Hi,
Any progress ?
You can open a support case support@mellanox.com mailto:support@mellanox.com
Marc
Thank you for your reply.
After the command
I also installed:
→ same error as above
rdma-core (rdma-core_42mlnx2-1.42120_amd64.deb) from mlnx ofed 4.2 installation
→ same error as above
== Build drivers/net/mlx5
CC mlx5.o
/root/dpdk-stable/drivers/net/mlx5/mlx5.c: In function ‘mlx5_pci_probe’:
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:796:21: error: ‘struct ibv_device_attr_ex’ has no member named ‘device_cap_flags_ex’
!!(device_attr_ex.device_cap_flags_ex &
^
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:797:7: error: ‘IBV_DEVICE_RAW_IP_CSUM’ undeclared (first use in this function)
IBV_DEVICE_RAW_IP_CSUM);
^
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:797:7: note: each undeclared identifier is reported only once for each function it appears in
/root/dpdk-stable/drivers/net/mlx5/mlx5.c:816:18: error: ‘struct ibv_device_attr_ex’ has no member named ‘rss_caps’
device_attr_ex.rss_caps.max_rwq_indirection_table_size;
…
march
June 10, 2018, 7:11am
10
Hi,
I renew my invitation to open a case support@mellanox.com mailto:support@mellanox.com
The issue you see now is not related to the linker (-libverbs option) but to missing headers files.
BR
Marc