lkml.org 
[lkml]   [2018]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] iw_cxgb4: add INFINIBAND_ADDR_TRANS dependency
On Wed, May 30, 2018 at 4:01 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:

> On Thu, May 31, 2018 at 12:40:54AM +0200, Arnd Bergmann wrote:
> > > On 5/30/2018 5:25 PM, Jason Gunthorpe wrote:
> > >> On Wed, May 30, 2018 at 05:10:35PM -0500, Steve Wise wrote:
> > >>>
> > >>> On 5/30/2018 5:04 PM, Jason Gunthorpe wrote:
> > >>>> On Wed, May 30, 2018 at 11:58:18PM +0200, Arnd Bergmann wrote:
> > >>>>> The newly added fill_res_ep_entry function fails to link if
> > >>>>> CONFIG_INFINIBAND_ADDR_TRANS is not set:
> > >>>>>
> > >>>>> drivers/infiniband/hw/cxgb4/restrack.o: In function
`fill_res_ep_entry':
> > >>>>> restrack.c:(.text+0x3cc): undefined reference to `rdma_res_to_id'
> > >>>>> restrack.c:(.text+0x3d0): undefined reference to `rdma_iw_cm_id'
> > >>>>>
> > >>>>> This adds a Kconfig dependency for the driver.
> > >>>>>
> > >>>>> Fixes: 116aeb887371 ("iw_cxgb4: provide detailed
provider-specific CM_ID information")
> > >>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > >>>>> drivers/infiniband/hw/cxgb4/Kconfig | 1 +
> > >>>>> 1 file changed, 1 insertion(+)
> > >>>> Oh, I think we need to solve this with maybe a header fill null
stub
> > >>>> instead..
> > >>>>
> > >>>> We don't want to disable drivers just because a user interface is
> > >>>> disabled.
> > >>>>
> > >>> Why does CONFIG_INFINIBAND_ADDR_TRANS disable building rdma_cm.ko?
That
> > >>> is not correct.
> > >> That seems like a reasonable thing to do..
> > > rdma_ucm.ko is for usermode users, rdma_cm.ko is for kernel users, and
> > > is required for iwarp drivers. It seems rdma_cm.ko is not being
> > > compiled if ADDR_TRANS is not set.

> I think the intention was to completely disable rdma-cm, including all
> support for rx'ing remote packets? Greg?

Yes. That's my goal when INFINIBAND_ADDR_TRANS is unset.

> If this is required for iwarp then Arnd's patch is probably the right
> way to go..

> Jason

Agreed.
Acked-by: Greg Thelen <gthelen@google.com>

\
 
 \ /
  Last update: 2018-05-31 06:04    [W:0.083 / U:1.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site