[openib-general] [PATCH] Header file Changes for iWARP Support
Tom Tucker
tom at opengridcomputing.com
Thu Feb 23 10:15:15 PST 2006
This patch covers the header file changes necessary to support iWARP:
The addr.h change specifies an inline function for extracting an iWARP
"gid" from a dev_addr structure.
The ib_device.h change adds: a reference to an iw_cm_verbs provider
interface for iWARP devices, and a few device capability flags.
The iw_cm.h file specifies the interface to the iWARP CM.
Signed-off-by: Tom Tucker <tom at opengridcomputing.com>
Index: rdma/ib_verbs.h
===================================================================
--- rdma/ib_verbs.h (revision 5460)
+++ rdma/ib_verbs.h (working copy)
@@ -101,6 +101,9 @@
IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
IB_DEVICE_SRQ_RESIZE = (1<<13),
IB_DEVICE_N_NOTIFY_CQ = (1<<14),
+ IB_DEVICE_ZERO_STAG = (1<<15),
+ IB_DEVICE_MEM_WINDOW = (1<<16),
+ IB_DEVICE_SEND_W_INV = (1<<17),
};
enum ib_atomic_cap {
@@ -824,6 +827,7 @@
struct ib_gid_cache **gid_cache;
};
+struct iw_cm_verbs;
struct ib_device {
struct device *dma_device;
@@ -840,6 +844,8 @@
u32 flags;
+ struct iw_cm_verbs* iwcm;
+
int (*query_device)(struct ib_device *device,
struct ib_device_attr *device_attr);
int (*query_port)(struct ib_device *device,
Index: rdma/iw_cm.h
===================================================================
--- rdma/iw_cm.h (revision 0)
+++ rdma/iw_cm.h (revision 0)
@@ -0,0 +1,152 @@
+/*
+ * 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;
+ 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*,
+ 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 */
Index: rdma/ib_addr.h
===================================================================
--- rdma/ib_addr.h (revision 5460)
+++ rdma/ib_addr.h (working copy)
@@ -113,5 +113,15 @@
memcpy(dev_addr->dst_dev_addr + 4, gid, sizeof *gid);
}
+static inline union ib_gid* iw_addr_get_sgid(struct rdma_dev_addr* rda)
+{
+ return (union ib_gid*)rda->src_dev_addr;
+}
+
+static inline union ib_gid* iw_addr_get_dgid(struct rdma_dev_addr* rda)
+{
+ return (union ib_gid*)rda->dst_dev_addr;
+}
+
#endif /* IB_ADDR_H */
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