De : Selvin Xavier <selvin.xavier@xxxxxxxxxxxx> À : Pierre-Elliott Bécue <peb@xxxxxxxxxx> Cc : linux-rdma@xxxxxxxxxxxxxxx Date : 12 juin 2024 19:18:34 Objet : Re: What's the current status with bnxt_re-abi.h > Hi, > bnxt_re-abi.h in linux kernel and rdma-core uses abi version 1. We > dont bump up the version in upstream and backward compatibility is > maintained using the comp_mask field of the interface structures. > > If you are using the latest drivers maintained in the Broadcom site > (which uses ABI version 6), you need to use the libbnxt_re hosted in > the Broacom site itself. We maintain compatibility between the Out of > tree driver and Out of tree library. > > Thanks, > Selvin > > On Wed, Jun 12, 2024 at 10:21 PM Pierre-Elliott Bécue <peb@xxxxxxxxxx> wrote: >> >> Pierre-Elliott Bécue <peb@xxxxxxxxxx> wrote on 12/06/2024 at 18:47:36+0200: >> >>> Hello, >>> >>> In bnxt_re-abi.h, the abi version mentioned is 1. It's used as it's in >>> all libibverbs to determine the min AND max supported ABI. >>> >>> bnxt_re isn't currently mainlined in the kernel, >> >> Sorry, a word is missing: "Recent bnxt_re isn't currently mainlined" >> >>> and those eager to use >>> the driver need to rely on the one provided by broadcom on their >>> website. >>> >>> The thing is, they bumped their ABI version multiple times (current is >>> 6). In the current context, one can't use the manually compiled bnxt_re >>> driver with libibverbs as any call will error due to the bnxt_re abi >>> version being outside of min/max supported abi version. >>> >>> What's the current situation regarding bnxt_re, should we consider >>> libibverb support of bnxt_re as deprecated? >>> >>> Of course I could have missed something, sorry for that if that's the >>> case. >>> >>> Bests, Hey Selvin, Thanks a lot for clarifying this. I built libbnxt_re, but the thing is, I can't use the usual infiniband tooling (ib_write_bw) et al without using libibverbs which is still the linux-rdma one. Do you have an alternative to suggest that I should consider? Also, would a RDMA+SRIOV-capable broadcom card with the latest firmware (229 something) work fine with the drivers shipped in rdma-core. If so maybe I should use what's provided by the kernel and rdma-core. Bests, -- Pierre-Elliott Bécue
