On 8/19/2015 7:37 PM, Christoph Hellwig wrote:
The field is only initialized in mlx, but never used.

If we want to add proper XRC support it should be done with a new
struct ib_xrc_wr.

This shrinks the various WR structures by another 4 bytes.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
  drivers/infiniband/hw/mlx5/qp.c | 1 -
  include/rdma/ib_verbs.h         | 1 -
  2 files changed, 2 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 04df156..83a290f 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -2634,7 +2634,6 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct 
ib_send_wr *wr,
                switch (ibqp->qp_type) {
                case IB_QPT_XRC_INI:
                        xrc = seg;
-                       xrc->xrc_srqn = htonl(wr->xrc_remote_srq_num);
                        seg += sizeof(*xrc);
                        size += sizeof(*xrc) / 16;
                        /* fall through */
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 9b29c78..b855189 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1100,7 +1100,6 @@ struct ib_send_wr {
                __be32          imm_data;
                u32             invalidate_rkey;
        } ex;
-       u32                     xrc_remote_srq_num;     /* XRC TGT QPs only */
  };

  struct ib_rdma_wr {


Looks OK to me,

Reviewed-by: Sagi Grimberg <sa...@mellanox.com>

This will need Eli's ack though...
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