diff options
| author | Shiraz Saleem <shiraz.saleem@intel.com> | 2016-04-22 22:14:27 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-04-28 23:32:55 +0300 |
| commit | 6c2f76197db63e337fb60b16800f234f6428c32d (patch) | |
| tree | 79455cd597ad9fc279161c57a7e2dad8f032c981 /drivers/infiniband/hw/i40iw | |
| parent | df2d96c3d00413cbdd0d5e391aeba6eef806b88d (diff) | |
| download | linux-6c2f76197db63e337fb60b16800f234f6428c32d.tar.xz | |
RDMA/i40iw: Fix for using one sge for RDMA READ
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>
Diffstat (limited to 'drivers/infiniband/hw/i40iw')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 2d832c758c66..45f70f5e14a7 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -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; |