[dpdk-users] Wrong OFED version for DPDK 17.11.1 ?
Shahaf Shuler
shahafs at mellanox.com
Wed Apr 11 10:50:16 CEST 2018
Hi Iain,
Tuesday, April 10, 2018 10:12 PM, Iain Barker:
> Subject: [dpdk-users] Wrong OFED version for DPDK 17.11.1 ?
>
> Hi all,
>
> I'm trying to build 17.11.1 against libibverbs from OFED 4.2-1.0.0.0 but having
> some API compatibility issues.
>
> According to the DPDK docs, that's the correct version for DPDK 17.11
> Ref: "Mellanox OFED version: 4.2" in
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdp
> dk.org%2Fdoc%2Fguides-
> 17.11%2Fnics%2Fmlx5.html&data=02%7C01%7Cshahafs%40mellanox.com%7
> C00e205bcc93b4ab687ce08d59f16ec56%7Ca652971c7d2e4d9ba6a4d149256f4
> 61b%7C0%7C0%7C636589843233074081&sdata=tRgQGtKP3WlalZ8XYVp6Qvq
> pkStiVgdup6EmZSKEC3c%3D&reserved=0
>
> But I get multiple errors which suggest the API versions are incompatible. For
> example:
>
> priv->hw_csum =
> !!(device_attr_ex.device_cap_flags_ex &
> IBV_DEVICE_RAW_IP_CSUM);
>
> drivers/net/mlx5/mlx5.c:794:21: error: 'struct ibv_device_attr_ex' has no
> member named 'device_cap_flags_ex'
>
> MLNX_OFED_SRC-4.2-1.0.0.0 contains libibverbs-41mlnx1, and that has
> include/infiniband/verbs.h with the following typedef:
> struct ibv_device_attr_ex {
> struct ibv_device_attr orig_attr;
> uint32_t comp_mask;
> struct ibv_odp_caps odp_caps;
> };
>
> So the docs appear to be wrong. no way the OFED 4.2 version of mlx5.c is
> going to compile against that header.
>
> What version of libibverbs should I actually be using for DPDK 17.11.1 ?
Starting from DPDK 17.11 MLX5 PMD uses rdma-core as the user space instead of libibverbs/libmlx5. As you can see from the doc it will be installed when calling mlnx ofed installation script using --usptream-libs.
You were installing the legacy ibverbs, hence the compilation errors. Try to install rdma-core instead.
>
> thanks,
> Iain
More information about the users
mailing list