On Fri, Jul 22, 2022 at 5:14 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote:
>
> On Fri, Jul 22, 2022 at 05:10:46PM +0200, haris iqbal wrote:
> > On Fri, Jul 15, 2022 at 11:21 AM haris iqbal <haris.phnx@xxxxxxxxx> wrote:
> > >
> > > On Thu, Jul 7, 2022 at 9:30 AM Md Haris Iqbal <haris.phnx@xxxxxxxxx> wrote:
> > > >
> > > > The 'rkey' input can be an lkey or rkey, and in rxe the lkey or rkey have
> > > > the same value, including the variant bits.
> > > >
> > > > So, if mr->rkey is set, compare the invalidate key with it, otherwise
> > > > compare with the mr->lkey.
> > > >
> > > > Since we already did a lookup on the non-varient bits to get this far,
> > > > the check's only purpose is to confirm that the wqe has the correct
> > > > variant bits.
> > > >
> > > > Fixes: 001345339f4c ("RDMA/rxe: Separate HW and SW l/rkeys")
> > > > Cc: rpearsonhpe@xxxxxxxxx
> > > > Signed-off-by: Md Haris Iqbal <haris.phnx@xxxxxxxxx>
> > > > ---
> > > > drivers/infiniband/sw/rxe/rxe_loc.h | 2 +-
> > > > drivers/infiniband/sw/rxe/rxe_mr.c | 12 ++++++------
> > > > 2 files changed, 7 insertions(+), 7 deletions(-)
> > > >
> > > > diff --git a/drivers/infiniband/sw/rxe/rxe_loc.h b/drivers/infiniband/sw/rxe/rxe_loc.h
> > > > index 0e022ae1b8a5..37484a559d20 100644
> > > > --- a/drivers/infiniband/sw/rxe/rxe_loc.h
> > > > +++ b/drivers/infiniband/sw/rxe/rxe_loc.h
> > > > @@ -77,7 +77,7 @@ struct rxe_mr *lookup_mr(struct rxe_pd *pd, int access, u32 key,
> > > > enum rxe_mr_lookup_type type);
> > > > int mr_check_range(struct rxe_mr *mr, u64 iova, size_t length);
> > > > int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
> > > > -int rxe_invalidate_mr(struct rxe_qp *qp, u32 rkey);
> > > > +int rxe_invalidate_mr(struct rxe_qp *qp, u32 key);
> > > > int rxe_reg_fast_mr(struct rxe_qp *qp, struct rxe_send_wqe *wqe);
> > > > int rxe_mr_set_page(struct ib_mr *ibmr, u64 addr);
> > > > int rxe_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
> > > > diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
> > > > index fc3942e04a1f..3add52129006 100644
> > > > --- a/drivers/infiniband/sw/rxe/rxe_mr.c
> > > > +++ b/drivers/infiniband/sw/rxe/rxe_mr.c
> > > > @@ -576,22 +576,22 @@ struct rxe_mr *lookup_mr(struct rxe_pd *pd, int access, u32 key,
> > > > return mr;
> > > > }
> > > >
> > > > -int rxe_invalidate_mr(struct rxe_qp *qp, u32 rkey)
> > > > +int rxe_invalidate_mr(struct rxe_qp *qp, u32 key)
> > > > {
> > > > struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
> > > > struct rxe_mr *mr;
> > > > int ret;
> > > >
> > > > - mr = rxe_pool_get_index(&rxe->mr_pool, rkey >> 8);
> > > > + mr = rxe_pool_get_index(&rxe->mr_pool, key >> 8);
> > > > if (!mr) {
> > > > - pr_err("%s: No MR for rkey %#x\n", __func__, rkey);
> > > > + pr_err("%s: No MR for key %#x\n", __func__, key);
> > > > ret = -EINVAL;
> > > > goto err;
> > > > }
> > > >
> > > > - if (rkey != mr->rkey) {
> > > > - pr_err("%s: rkey (%#x) doesn't match mr->rkey (%#x)\n",
> > > > - __func__, rkey, mr->rkey);
> > > > + if (mr->rkey ? (key != mr->rkey) : (key != mr->lkey)) {
> > > > + pr_err("%s: wr key (%#x) doesn't match mr key (%#x)\n",
> > > > + __func__, key, (mr->rkey ? mr->rkey : mr->lkey));
> > > > ret = -EINVAL;
> > > > goto err_drop_ref;
> > > > }
> > >
> > > Ping.
> >
> > Ping.
> >
> > Does this need more discussions or changes?
>
> I was hoping Bob would say something but I am happy with it..
Thanks Jason for the response.
We can wait for Bob to share his thoughts.
>
> Jason
