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RDMA/i40iw: Fix for using one sge for RDMA READ

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A check is added to validate the requested sge number.
iWARP doesn't support multiple sg elements for
RDMA READ work requests.

Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Shiraz Saleem 2016-04-22 14:14:27 -05:00 committed by Doug Ledford
parent df2d96c3d0
commit 6c2f76197d
1 changed files with 5 additions and 1 deletions
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6
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View file

@ -74,7 +74,7 @@ static int i40iw_query_device(struct ib_device *ibdev,
props->max_cqe = iwdev->max_cqe;
props->max_mr = iwdev->max_mr;
props->max_pd = iwdev->max_pd;
props->max_sge_rd = 1;
props->max_sge_rd = I40IW_MAX_SGE_RD;
props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE;
props->max_qp_init_rd_atom = props->max_qp_rd_atom;
props->atomic_cap = IB_ATOMIC_NONE;
@ -2117,6 +2117,10 @@ static int i40iw_post_send(struct ib_qp *ibqp,
inv_stag = true;
/* fall-through*/
case IB_WR_RDMA_READ:
if (ib_wr->num_sge > I40IW_MAX_SGE_RD) {
err = -EINVAL;
break;
}
info.op_type = I40IW_OP_TYPE_RDMA_READ;
info.op.rdma_read.rem_addr.tag_off = rdma_wr(ib_wr)->remote_addr;
info.op.rdma_read.rem_addr.stag = rdma_wr(ib_wr)->rkey;