On 7/1/2015 7:30 PM, Steve Wise wrote:
Memory regions that are the target of an iWARP RDMA READ RESPONSE need
REMOTE_WRITE access rights. So enable REMOTE_WRITE for iWARP devices.
Use the device's max_sge_rd capability to compute the target's read sge
depth. Save both the read and write max_sge values in the isert_conn
struct, and use these when creating RDMA_READ work requests
Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/isert/ib_isert.c | 54 ++++++++++++++++++++++++++-----
drivers/infiniband/ulp/isert/ib_isert.h | 3 +-
2 files changed, 47 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 9e7b492..8334dd0 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -163,7 +163,9 @@ isert_create_qp(struct isert_conn *isert_conn,
* outgoing control PDU responses.
*/
attr.cap.max_send_sge = max(2, device->dev_attr.max_sge - 2);
- isert_conn->max_sge = attr.cap.max_send_sge;
+ isert_conn->max_write_sge = attr.cap.max_send_sge;
+ isert_conn->max_read_sge = min_t(u32, device->dev_attr.max_sge_rd,
+ attr.cap.max_send_sge);
attr.cap.max_recv_sge = 1;
attr.sq_sig_type = IB_SIGNAL_REQ_WR;
@@ -348,6 +350,17 @@ out_cq:
return ret;
}
+static int any_port_is_iwarp(struct isert_device *device)
+{
+ int i;
+
+ for (i = rdma_start_port(device->ib_device);
+ i <= rdma_end_port(device->ib_device); i++)
+ if (rdma_protocol_iwarp(device->ib_device, i))
+ return 1;
+ return 0;
+}
+
Lets get rid of that as soon as possible...
However,
Reviewed-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Nic,
I think it makes sense that this will go via doug's tree.
Any objection?
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