can you confirm the adapter version that you use? OOT and In-tree drivers should support all released adapters. You dont have to (or can not) install both drivers in the same system. On Fri, Mar 1, 2024 at 12:11 PM Ma, Jiping <Jiping.Ma2@xxxxxxxxxxxxx> wrote: > > Hi, Xavier > > Could you help to confirm if the in-tree driver bnxt_re/bnxt_en in kernel 6.6.7 can replace OOT drivers? We need support two kinds of drivers OOT and in-tree at the same time if in-tree driver can not replace OOT drivers. > We need two libbnxt_re and rdma-core packages in the system to support in-tree drivers and OOT drivers. > > Thanks, > Jiping > > -----Original Message----- > From: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx> > Sent: Friday, March 1, 2024 2:07 PM > To: Ma, Jiping <Jiping.Ma2@xxxxxxxxxxxxx> > Cc: Friesen, Chris <Chris.Friesen@xxxxxxxxxxxxx>; linux-rdma@xxxxxxxxxxxxxxx; Asselstine, Mark <Mark.Asselstine@xxxxxxxxxxxxx>; Tao, Yue <Yue.Tao@xxxxxxxxxxxxx>; Wang, Linda <Linda.Wang@xxxxxxxxxxxxx>; Bicakci, Vefa <Vefa.Bicakci@xxxxxxxxxxxxx> > Subject: Re: question about in-tree vs out-of-tree Broadcom ROCE drivers. > > Hi Chris/Jiping, > please see my comments below. > > Thanks, > Selvin Xavier > > On Fri, Mar 1, 2024 at 6:45 AM Ma, Jiping <Jiping.Ma2@xxxxxxxxxxxxx> wrote: > > > > Hi, Chris > > > > Added the comments inline. > > > > Thanks, > > Jiping > > > > -----Original Message----- > > From: Friesen, Chris <Chris.Friesen@xxxxxxxxxxxxx> > > Sent: Friday, March 1, 2024 4:31 AM > > To: linux-rdma@xxxxxxxxxxxxxxx; selvin.xavier@xxxxxxxxxxxx > > Cc: Asselstine, Mark <Mark.Asselstine@xxxxxxxxxxxxx>; Ma, Jiping <Jiping.Ma2@xxxxxxxxxxxxx> > > Subject: question about in-tree vs out-of-tree Broadcom ROCE drivers. > > > > Hi, > > > > I got your address from the Linux kernel MAINTAINERS file, I was wondering if you could clear something up? > > > > As far as I can tell, the in-tree driver at drivers/infiniband/hw/bnxt_re uses a BNXT_RE_ABI_VERSION value of 1, as defined in include/uapi/rdma/bnxt_re-abi.h. > > > > On the other hand, the libbnxt_re-228.0.133.0 package and the > > bnxt_re-228.0.133.0 driver embedded within > > https://docs.broadcom.com/docs/NXE_Linux_Installer-228.1.111.0 are using a BNXT_RE_ABI_VERSION of 6. > > > > [Jiping] The abi_version of OOT bnxt_re driver is 6. BNXT_RE_ABI_VERSION of 6 of libbnxt_re is to compatible with OOT driver. Perhaps libbnxt_re does not consider the in-tree driver. > > > > This seems to indicate that the in-tree kernel driver cannot be used with the official version of libbnxt_re as distributed by Broadcom. Is this correct? If so, is there a separate version of libbnxt_re intended to be used with the in-kernel driver? > > > > [Jiping] Yes, it looks like. But I did RDMA test, the test passed. So I suggest we can do more full tests for this part, such as wrcp regression test etc. In addition, I did not do more search if there is other libbnxt_re can be used for in-tree driver. Could we also confirm with Broadcom for this question? > > If you are using an in-tree kernel driver, then you can use the > libbnxt_re coming with the rdma-core/libibverbs packages in the OS > distro. libbnxt_re is part of rdma-core > https://github.com/linux-rdma/rdma-core/tree/master/providers/bnxt_re. > So if you are using the in tree bnxt_re driver, no need to install any > libbnxt_re separately. Please install the rdma-core/libibverbs > package. > > If you are using the OOT driver, please use the OOT libbnxt_re and > bnxt_re/bnxt_en driver from the Broadcom download section. > https://docs.broadcom.com/docs/NXE_Linux_Installer-228.1.111.0 > > > > > Thanks, > > > > Chris Friesen > >
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