Re: [PATCH rdma-next] RDMA/uapi: Fix and re-organize the usage of rdma_driver_id

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On Thu, Oct 10, 2019 at 07:20:57PM +0000, Jason Gunthorpe wrote:
> On Thu, Oct 10, 2019 at 03:05:41PM +0300, Leon Romanovsky wrote:
> > From: Yishai Hadas <yishaih@xxxxxxxxxxxx>
> >
> > Fix 'enum rdma_driver_id' to preserve other driver values before that
> > RDMA_DRIVER_CXGB3 was deleted.  As this value is UAPI we can't affect
> > other values as of a deletion of one driver id.
> >
> > In addition,
> > - Expose 'enum rdma_driver_id' to user applications by moving it to
> >   ib_user_ioctl_verbs.h which is exposed in rdma-core to applications.
> >
> > - Drop the dependency of ib_user_ioctl_verbs.h on ib_user_verbs.h which
> >   is not really required.
>
> One change per patch when it is a fixes..
>
> > Fixes: 30e0f6cf5acb ("RDMA/iw_cxgb3: Remove the iw_cxgb3 module from kernel")
> > Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
> > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> >  include/uapi/rdma/ib_user_ioctl_verbs.h  | 47 +++++++++++++++++++++++-
> >  include/uapi/rdma/ib_user_verbs.h        | 25 -------------
> >  include/uapi/rdma/rdma_user_ioctl_cmds.h | 21 -----------
> >  3 files changed, 46 insertions(+), 47 deletions(-)
> >
> > diff --git a/include/uapi/rdma/ib_user_ioctl_verbs.h b/include/uapi/rdma/ib_user_ioctl_verbs.h
> > index 72c7fc75f960..3d703be40012 100644
> > +++ b/include/uapi/rdma/ib_user_ioctl_verbs.h
> > @@ -35,7 +35,6 @@
> >  #define IB_USER_IOCTL_VERBS_H
> >
> >  #include <linux/types.h>
> > -#include <rdma/ib_user_verbs.h>
> >
> >  #ifndef RDMA_UAPI_PTR
> >  #define RDMA_UAPI_PTR(_type, _name)	__aligned_u64 _name
> > @@ -167,10 +166,56 @@ enum ib_uverbs_advise_mr_flag {
> >  	IB_UVERBS_ADVISE_MR_FLAG_FLUSH = 1 << 0,
> >  };
> >
> > +struct ib_uverbs_query_port_resp {
> > +	__u32 port_cap_flags;		/* see ib_uverbs_query_port_cap_flags */
> > +	__u32 max_msg_sz;
> > +	__u32 bad_pkey_cntr;
> > +	__u32 qkey_viol_cntr;
> > +	__u32 gid_tbl_len;
> > +	__u16 pkey_tbl_len;
> > +	__u16 lid;
> > +	__u16 sm_lid;
> > +	__u8  state;
> > +	__u8  max_mtu;
> > +	__u8  active_mtu;
> > +	__u8  lmc;
> > +	__u8  max_vl_num;
> > +	__u8  sm_sl;
> > +	__u8  subnet_timeout;
> > +	__u8  init_type_reply;
> > +	__u8  active_width;
> > +	__u8  active_speed;
> > +	__u8  phys_state;
> > +	__u8  link_layer;
> > +	__u8  flags;			/* see ib_uverbs_query_port_flags */
> > +	__u8  reserved;
> > +};
>
> Probably better to move ib_uverbs_query_port_resp_ex, since it is
> really more of write() style interface

It is already in ib_user_ioctl_verbs.h.

Thanks
>
> Jason



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