[openib-general] [PATCH v2] iw_cm.h file with formatting changes
Tom Tucker
tom at opengridcomputing.com
Fri Feb 24 07:58:24 PST 2006
Here is another version of the iw_cm.h file updated with the
suggested formatting changes. Thanks for the comments.
I have not changed the size of the pdata len yet.
WRT casting the iWARP dev_addr to an ib_gid, the purpose for doing
this was to simplify the cma_acquire_dev logic as follows....
static int cma_acquire_dev(struct rdma_id_private *id_priv)
{
enum rdma_node_type dev_type = id_priv->id.route.addr.dev_addr.dev_type;
struct cma_device *cma_dev;
union ib_gid *gid;
int ret = -ENODEV;
switch (rdma_node_get_transport(dev_type)) {
case RDMA_TRANSPORT_IB:
gid = ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr);
break;
case RDMA_TRANSPORT_IWARP:
gid = iw_addr_get_sgid(&id_priv->id.route.addr.dev_addr);
break;
default:
return -ENODEV;
}
mutex_lock(&lock);
list_for_each_entry(cma_dev, &dev_list, list) {
ret = ib_find_cached_gid(cma_dev->device, gid,
&id_priv->id.port_num, NULL);
if (!ret) {
cma_attach_to_dev(id_priv, cma_dev);
break;
}
}
mutex_unlock(&lock);
return ret;
}
Since iWARP devices advertise their Ethernet addresses as port
GIDs, this all works. Although the 'name' may be (ok, it is) misleading, the
result simplifies the logic.
Signed-off-by: Tom Tucker <tom at opengridcomputing.com>
Index: include/rdma/iw_cm.h
===================================================================
--- include/rdma/iw_cm.h (revision 0)
+++ include/rdma/iw_cm.h (revision 0)
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2005 Network Appliance, Inc. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#if !defined(IW_CM_H)
+#define IW_CM_H
+
+#include <linux/in.h>
+#include <rdma/ib_cm.h>
+
+struct iw_cm_id;
+struct iw_cm_event;
+
+enum iw_cm_event_type {
+ IW_CM_EVENT_CONNECT_REQUEST = 1, /* connect request received */
+ IW_CM_EVENT_CONNECT_REPLY, /* reply from active connect request */
+ IW_CM_EVENT_ESTABLISHED,
+ IW_CM_EVENT_LLP_DISCONNECT,
+ IW_CM_EVENT_LLP_RESET,
+ IW_CM_EVENT_LLP_TIMEOUT,
+ IW_CM_EVENT_CLOSE
+};
+
+struct iw_cm_event {
+ enum iw_cm_event_type event;
+ int status;
+ u32 provider_id;
+ struct sockaddr_in local_addr;
+ struct sockaddr_in remote_addr;
+ void *private_data;
+ u8 private_data_len;
+};
+
+typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,
+ struct iw_cm_event *event);
+
+enum iw_cm_state {
+ IW_CM_STATE_IDLE, /* unbound, inactive */
+ IW_CM_STATE_LISTEN, /* listen waiting for connect */
+ IW_CM_STATE_CONN_SENT, /* outbound waiting for peer accept */
+ IW_CM_STATE_CONN_RECV, /* inbound waiting for user accept */
+ IW_CM_STATE_ESTABLISHED, /* established */
+};
+
+typedef void (*iw_event_handler)(struct iw_cm_id *cm_id,
+ struct iw_cm_event *event);
+struct iw_cm_id {
+ iw_cm_handler cm_handler; /* client callback function */
+ void *context; /* context to provide to client cb */
+ enum iw_cm_state state;
+ struct ib_device *device;
+ struct ib_qp *qp; /* If the qp is null, use qp_num */
+ u32 qp_num;
+ struct sockaddr_in local_addr;
+ struct sockaddr_in remote_addr;
+ u64 provider_id; /* device handle for this conn. */
+ iw_event_handler event_handler; /* callback for IW CM Provider events */
+};
+
+/**
+ * iw_create_cm_id - Allocate a communication identifier.
+ * @device: Device associated with the cm_id. All related communication will
+ * be associated with the specified device.
+ * @cm_handler: Callback invoked to notify the user of CM events.
+ * @context: User specified context associated with the communication
+ * identifier.
+ *
+ * Communication identifiers are used to track connection states,
+ * addr resolution requests, and listen requests.
+ */
+struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
+ iw_cm_handler cm_handler,
+ void *context);
+
+/* This is provided in the event generated when
+ * a remote peer accepts our connect request
+ */
+
+struct iw_cm_verbs {
+ int (*connect)(struct iw_cm_id *cm_id,
+ const void *private_data,
+ u8 private_data_len);
+
+ int (*disconnect)(struct iw_cm_id *cm_id,
+ int abrupt);
+
+ int (*accept)(struct iw_cm_id *cm_id,
+ const void *private_data,
+ u8 pdata_data_len);
+
+ int (*reject)(struct iw_cm_id *cm_id,
+ const void *private_data,
+ u8 private_data_len);
+
+ int (*getpeername)(struct iw_cm_id *cm_id,
+ struct sockaddr_in *local_addr,
+ struct sockaddr_in *remote_addr);
+
+ int (*create_listen)(struct iw_cm_id *cm_id,
+ int backlog);
+
+ int (*destroy_listen)(struct iw_cm_id *cm_id);
+
+};
+
+struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
+ iw_cm_handler cm_handler,
+ void *context);
+void iw_destroy_cm_id(struct iw_cm_id *cm_id);
+int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
+int iw_cm_getpeername(struct iw_cm_id *cm_id,
+ struct sockaddr_in *local_add,
+ struct sockaddr_in *remote_addr);
+int iw_cm_reject(struct iw_cm_id *cm_id,
+ const void *private_data,
+ u8 private_data_len);
+int iw_cm_accept(struct iw_cm_id *cm_id,
+ const void *private_data,
+ u8 private_data_len);
+int iw_cm_connect(struct iw_cm_id *cm_id,
+ const void *pdata, u8 pdata_len);
+int iw_cm_disconnect(struct iw_cm_id *cm_id);
+int iw_cm_bind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
+
+#endif /* IW_CM_H */
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