[openib-general] [PATCH] ofed_1-2 IWCM - Set iniator depth and responder resources to device max values.

[Steve WIse]

IWCM - Set initiator depth and responder resources to device max values.

For OFED 1.2, the IWCM will set the initiator depth and responder
resources to the device max values for new connect request events.

    
Signed-off-by: Steve Wise <swise at opengridcomputing.com>
---

 kernel_patches/fixes/iwcm_ordird.patch |   43 ++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/kernel_patches/fixes/iwcm_ordird.patch b/kernel_patches/fixes/iwcm_ordird.patch
new file mode 100644
index 0000000..3a9f643
--- /dev/null
+++ b/kernel_patches/fixes/iwcm_ordird.patch
@@ -0,0 +1,43 @@
+commit 7175034c7adf6b5fb5ba311929376af7501387a1
+Author: Steve Wise <swise at opengridcomputing.com>
+Date:   Sat Feb 10 14:16:35 2007 -0600
+
+    IWCM - Set iniator depth and responder resources to device max values.
+    
+    For OFED 1.2, the IWCM will set the initiator depth and responder
+    resources to the device max values for new connect request events.
+    
+    Signed-off-by: Steve Wise <swise at opengridcomputing.com>
+
+diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
+index 9e0ab04..e3afdf8 100644
+--- a/drivers/infiniband/core/cma.c
++++ b/drivers/infiniband/core/cma.c
+@@ -1137,6 +1137,7 @@ static int iw_conn_req_handler(struct iw
+ 	struct net_device *dev = NULL;
+ 	struct rdma_cm_event event;
+ 	int ret;
++	struct ib_device_attr attr;
+ 
+ 	listen_id = cm_id->context;
+ 	atomic_inc(&listen_id->dev_remove);
+@@ -1189,10 +1190,19 @@ static int iw_conn_req_handler(struct iw
+ 	sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr;
+ 	*sin = iw_event->remote_addr;
+ 
++	ret = ib_query_device(conn_id->id.device, &attr);
++	if (ret) {
++		cma_release_remove(conn_id);
++		rdma_destroy_id(new_cm_id);
++		goto out;
++	}
++	
+ 	memset(&event, 0, sizeof event);
+ 	event.event = RDMA_CM_EVENT_CONNECT_REQUEST;
+ 	event.param.conn.private_data = iw_event->private_data;
+ 	event.param.conn.private_data_len = iw_event->private_data_len;
++	event.param.conn.initiator_depth = attr.max_qp_init_rd_atom;	
++	event.param.conn.responder_resources = attr.max_qp_rd_atom;
+ 	ret = conn_id->id.event_handler(&conn_id->id, &event);
+ 	if (ret) {
+ 		/* User wants to destroy the CM ID */