This patch uses the sys/class entries to divine the node type and
stores the result in the cma_id when the cm_id is bound to a device.
The node_type can then be used by both the CMA and Applications to
select transport specific code paths.
Signed-off-by: Tom Tucker <[EMAIL PROTECTED]>
Index: libibverbs/include/infiniband/verbs.h
===================================================================
--- libibverbs/include/infiniband/verbs.h (revision 6570)
+++ libibverbs/include/infiniband/verbs.h (working copy)
@@ -698,6 +698,12 @@
struct ibv_port_attr *port_attr);
/**
+ * ibv_query_node_type - Get the device node_type
+ */
+int ibv_query_node_type(struct ibv_context *context,
+ enum ibv_node_type *node_type);
+
+/**
* ibv_query_gid - Get a GID table entry
*/
int ibv_query_gid(struct ibv_context *context, uint8_t port_num,
Index: libibverbs/src/libibverbs.map
===================================================================
--- libibverbs/src/libibverbs.map (revision 6570)
+++ libibverbs/src/libibverbs.map (working copy)
@@ -9,6 +9,7 @@
ibv_get_async_event;
ibv_ack_async_event;
ibv_query_device;
+ ibv_query_node_type;
ibv_query_port;
ibv_query_gid;
ibv_query_pkey;
Index: libibverbs/src/verbs.c
===================================================================
--- libibverbs/src/verbs.c (revision 6570)
+++ libibverbs/src/verbs.c (working copy)
@@ -89,6 +89,23 @@
return context->ops.query_port(context, port_num, port_attr);
}
+int ibv_query_node_type(struct ibv_context *context,
+ enum ibv_node_type *node_type)
+{
+ char node_desc[24];
+ char node_str[24];
+
+ if (!context)
+ return -1;
+
+ if (ibv_read_sysfs_file(context->device->ibdev->path, "node_type",
+ node_desc, sizeof(node_desc)) < 0)
+ return -1;
+
+ sscanf(node_desc, "%d: %s\n", (int*)node_type, node_str);
+ return 0;
+}
+
int ibv_query_gid(struct ibv_context *context, uint8_t port_num,
int index, union ibv_gid *gid)
{
Index: librdmacm/include/rdma/rdma_cma.h
===================================================================
--- librdmacm/include/rdma/rdma_cma.h (revision 6570)
+++ librdmacm/include/rdma/rdma_cma.h (working copy)
@@ -79,6 +79,7 @@
void *context;
struct ibv_qp *qp;
struct rdma_route route;
+ enum ibv_node_type node_type;
uint8_t port_num;
};
Index: librdmacm/src/cma.c
===================================================================
--- librdmacm/src/cma.c (revision 6570)
+++ librdmacm/src/cma.c (working copy)
@@ -248,6 +248,8 @@
if (cma_dev->guid == guid) {
id_priv->cma_dev = cma_dev;
id_priv->id.verbs = cma_dev->verbs;
+ ibv_query_node_type(cma_dev->verbs,
+ &id_priv->id.node_type);
return 0;
}
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