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Commit e86f8b06 authored by Steve Wise's avatar Steve Wise Committed by Roland Dreier
Browse files

RDMA/ucma: Copy iWARP route information on queries 



For iWARP rdma_cm ids, the "route" information is the L2 src and
next hop addresses.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent a25cecce

drivers/infiniband/core/ucma.c

+20 −2
Original line number Diff line number Diff line
@@ -636,6 +636,16 @@ static void ucma_copy_iboe_route(struct rdma_ucm_query_route_resp *resp, 
	}

}



static void ucma_copy_iw_route(struct rdma_ucm_query_route_resp *resp,

			       struct rdma_route *route)

{

	struct rdma_dev_addr *dev_addr;



	dev_addr = &route->addr.dev_addr;

	rdma_addr_get_dgid(dev_addr, (union ib_gid *) &resp->ib_route[0].dgid);

	rdma_addr_get_sgid(dev_addr, (union ib_gid *) &resp->ib_route[0].sgid);

}



static ssize_t ucma_query_route(struct ucma_file *file,

				const char __user *inbuf,

				int in_len, int out_len)
@@ -670,8 +680,10 @@ static ssize_t ucma_query_route(struct ucma_file *file, 


	resp.node_guid = (__force __u64) ctx->cm_id->device->node_guid;

	resp.port_num = ctx->cm_id->port_num;

	if (rdma_node_get_transport(ctx->cm_id->device->node_type) == RDMA_TRANSPORT_IB) {

		switch (rdma_port_get_link_layer(ctx->cm_id->device, ctx->cm_id->port_num)) {

	switch (rdma_node_get_transport(ctx->cm_id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		switch (rdma_port_get_link_layer(ctx->cm_id->device,

			ctx->cm_id->port_num)) {

		case IB_LINK_LAYER_INFINIBAND:

			ucma_copy_ib_route(&resp, &ctx->cm_id->route);

			break;
@@ -681,6 +693,12 @@ static ssize_t ucma_query_route(struct ucma_file *file, 
		default:

			break;

		}

		break;

	case RDMA_TRANSPORT_IWARP:

		ucma_copy_iw_route(&resp, &ctx->cm_id->route);

		break;

	default:

		break;

	}



out: