From: Amir Vadai <amirv@mellanox.co.il>
Date: Mon, 12 Apr 2010 12:42:32 +0000 (+0300)
Subject: sdp: module parameter to disable SDP over ROCEE
X-Git-Tag: v4.1.12-92~264^2~5^2~201
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e68643e6ecf7d6b3ffdbe3d2433782444cb2e241;p=users%2Fjedix%2Flinux-maple.git

sdp: module parameter to disable SDP over ROCEE

Since ROCEE added, SDP always try to connect, even
if link layer of type Ethernet. This make 'both' mode
in libsdp useless.

Added a module paramter to disable it by default

Signed-off-by: Amir Vadai <amirv@mellanox.co.il>
---

diff --git a/drivers/infiniband/ulp/sdp/sdp_cma.c b/drivers/infiniband/ulp/sdp/sdp_cma.c
index 32ae6b6bc5177..f35b3c931e704 100644
--- a/drivers/infiniband/ulp/sdp/sdp_cma.c
+++ b/drivers/infiniband/ulp/sdp/sdp_cma.c
@@ -48,6 +48,9 @@
 
 #define SDP_MAJV_MINV 0x22
 
+SDP_MODPARAM_SINT(sdp_link_layer_ib_only, 1, "Support only link layer of "
+		"type Infiniband");
+
 enum {
 	SDP_HH_SIZE = 76,
 	SDP_HAH_SIZE = 180,
@@ -334,6 +337,19 @@ int sdp_cma_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
 	switch (event->event) {
 	case RDMA_CM_EVENT_ADDR_RESOLVED:
 		sdp_dbg(sk, "RDMA_CM_EVENT_ADDR_RESOLVED\n");
+
+		if (sdp_link_layer_ib_only &&
+			rdma_node_get_transport(id->device->node_type) == 
+				RDMA_TRANSPORT_IB &&
+			rdma_port_link_layer(id->device, id->port_num) !=
+				IB_LINK_LAYER_INFINIBAND) {
+			sdp_dbg(sk, "Link layer is: %d. Only IB link layer "
+				"is allowed\n",
+				rdma_port_link_layer(id->device, id->port_num));
+			rc = -ENETUNREACH;
+			break;
+		}
+
 		rc = rdma_resolve_route(id, SDP_ROUTE_TIMEOUT);
 		break;
 	case RDMA_CM_EVENT_ADDR_ERROR: