2 files changed, 303 insertions, 0 deletions
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
new file mode 100644
index 000000000000..402c63d7226b
--- /dev/null
+++ b/include/rdma/rdma_cm.h
@@ -0,0 +1,256 @@
+/*
+ * Copyright (c) 2005 Voltaire Inc.  All rights reserved.
+ * Copyright (c) 2005 Intel Corporation.  All rights reserved.
+ *
+ * This Software is licensed under one of the following licenses:
+ *
+ * 1) under the terms of the "Common Public License 1.0" a copy of which is
+ *    available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/cpl.php.
+ *
+ * 2) under the terms of the "The BSD License" a copy of which is
+ *    available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/bsd-license.php.
+ *
+ * 3) under the terms of the "GNU General Public License (GPL) Version 2" a
+ *    copy of which is available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/gpl-license.php.
+ *
+ * Licensee has the right to choose one of the above licenses.
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice and one of the license notices.
+ *
+ * Redistributions in binary form must reproduce both the above copyright
+ * notice, one of the license notices in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ */
+#if !defined(RDMA_CM_H)
+#define RDMA_CM_H
+#include <linux/socket.h>
+#include <linux/in6.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_sa.h>
+/*
+ * Upon receiving a device removal event, users must destroy the associated
+ * RDMA identifier and release all resources allocated with the device.
+ */
+enum rdma_cm_event_type {
+        RDMA_CM_EVENT_ADDR_RESOLVED,
+        RDMA_CM_EVENT_ADDR_ERROR,
+        RDMA_CM_EVENT_ROUTE_RESOLVED,
+        RDMA_CM_EVENT_ROUTE_ERROR,
+        RDMA_CM_EVENT_CONNECT_REQUEST,
+        RDMA_CM_EVENT_CONNECT_RESPONSE,
+        RDMA_CM_EVENT_CONNECT_ERROR,
+        RDMA_CM_EVENT_UNREACHABLE,
+        RDMA_CM_EVENT_REJECTED,
+        RDMA_CM_EVENT_ESTABLISHED,
+        RDMA_CM_EVENT_DISCONNECTED,
+        RDMA_CM_EVENT_DEVICE_REMOVAL,
+};
+enum rdma_port_space {
+        RDMA_PS_SDP  = 0x0001,
+        RDMA_PS_TCP  = 0x0106,
+        RDMA_PS_UDP  = 0x0111,
+        RDMA_PS_SCTP = 0x0183
+};
+struct rdma_addr {
+        struct sockaddr src_addr;
+        u8              src_pad[sizeof(struct sockaddr_in6) -
+                                sizeof(struct sockaddr)];
+        struct sockaddr dst_addr;
+        u8              dst_pad[sizeof(struct sockaddr_in6) -
+                                sizeof(struct sockaddr)];
+        struct rdma_dev_addr dev_addr;
+};
+struct rdma_route {
+        struct rdma_addr addr;
+        struct ib_sa_path_rec *path_rec;
+        int num_paths;
+};
+struct rdma_cm_event {
+        enum rdma_cm_event_type  event;
+        int                      status;
+        void                    *private_data;
+        u8                       private_data_len;
+};
+struct rdma_cm_id;
+/**
+ * rdma_cm_event_handler - Callback used to report user events.
+ *
+ * Notes: Users may not call rdma_destroy_id from this callback to destroy
+ *   the passed in id, or a corresponding listen id.  Returning a
+ *   non-zero value from the callback will destroy the passed in id.
+ */
+typedef int (*rdma_cm_event_handler)(struct rdma_cm_id *id,
+                                     struct rdma_cm_event *event);
+struct rdma_cm_id {
+        struct ib_device        *device;
+        void                    *context;
+        struct ib_qp            *qp;
+        rdma_cm_event_handler    event_handler;
+        struct rdma_route        route;
+        enum rdma_port_space     ps;
+        u8                       port_num;
+};
+/**
+ * rdma_create_id - Create an RDMA identifier.
+ *
+ * @event_handler: User callback invoked to report events associated with the
+ *   returned rdma_id.
+ * @context: User specified context associated with the id.
+ * @ps: RDMA port space.
+ */
+struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler,
+                                  void *context, enum rdma_port_space ps);
+void rdma_destroy_id(struct rdma_cm_id *id);
+/**
+ * rdma_bind_addr - Bind an RDMA identifier to a source address and
+ *   associated RDMA device, if needed.
+ *
+ * @id: RDMA identifier.
+ * @addr: Local address information.  Wildcard values are permitted.
+ *
+ * This associates a source address with the RDMA identifier before calling
+ * rdma_listen.  If a specific local address is given, the RDMA identifier will
+ * be bound to a local RDMA device.
+ */
+int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr);
+/**
+ * rdma_resolve_addr - Resolve destination and optional source addresses
+ *   from IP addresses to an RDMA address.  If successful, the specified
+ *   rdma_cm_id will be bound to a local device.
+ *
+ * @id: RDMA identifier.
+ * @src_addr: Source address information.  This parameter may be NULL.
+ * @dst_addr: Destination address information.
+ * @timeout_ms: Time to wait for resolution to complete.
+ */
+int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
+                      struct sockaddr *dst_addr, int timeout_ms);
+/**
+ * rdma_resolve_route - Resolve the RDMA address bound to the RDMA identifier
+ *   into route information needed to establish a connection.
+ *
+ * This is called on the client side of a connection.
+ * Users must have first called rdma_resolve_addr to resolve a dst_addr
+ * into an RDMA address before calling this routine.
+ */
+int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms);
+/**
+ * rdma_create_qp - Allocate a QP and associate it with the specified RDMA
+ * identifier.
+ *
+ * QPs allocated to an rdma_cm_id will automatically be transitioned by the CMA
+ * through their states.
+ */
+int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd,
+                   struct ib_qp_init_attr *qp_init_attr);
+/**
+ * rdma_destroy_qp - Deallocate the QP associated with the specified RDMA
+ * identifier.
+ *
+ * Users must destroy any QP associated with an RDMA identifier before
+ * destroying the RDMA ID.
+ */
+void rdma_destroy_qp(struct rdma_cm_id *id);
+/**
+ * rdma_init_qp_attr - Initializes the QP attributes for use in transitioning
+ *   to a specified QP state.
+ * @id: Communication identifier associated with the QP attributes to
+ *   initialize.
+ * @qp_attr: On input, specifies the desired QP state.  On output, the
+ *   mandatory and desired optional attributes will be set in order to
+ *   modify the QP to the specified state.
+ * @qp_attr_mask: The QP attribute mask that may be used to transition the
+ *   QP to the specified state.
+ *
+ * Users must set the @qp_attr->qp_state to the desired QP state.  This call
+ * will set all required attributes for the given transition, along with
+ * known optional attributes.  Users may override the attributes returned from
+ * this call before calling ib_modify_qp.
+ *
+ * Users that wish to have their QP automatically transitioned through its
+ * states can associate a QP with the rdma_cm_id by calling rdma_create_qp().
+ */
+int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
+                       int *qp_attr_mask);
+struct rdma_conn_param {
+        const void *private_data;
+        u8 private_data_len;
+        u8 responder_resources;
+        u8 initiator_depth;
+        u8 flow_control;
+        u8 retry_count;         /* ignored when accepting */
+        u8 rnr_retry_count;
+        /* Fields below ignored if a QP is created on the rdma_cm_id. */
+        u8 srq;
+        u32 qp_num;
+        enum ib_qp_type qp_type;
+};
+/**
+ * rdma_connect - Initiate an active connection request.
+ *
+ * Users must have resolved a route for the rdma_cm_id to connect with
+ * by having called rdma_resolve_route before calling this routine.
+ */
+int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param);
+/**
+ * rdma_listen - This function is called by the passive side to
+ *   listen for incoming connection requests.
+ *
+ * Users must have bound the rdma_cm_id to a local address by calling
+ * rdma_bind_addr before calling this routine.
+ */
+int rdma_listen(struct rdma_cm_id *id, int backlog);
+/**
+ * rdma_accept - Called to accept a connection request or response.
+ * @id: Connection identifier associated with the request.
+ * @conn_param: Information needed to establish the connection.  This must be
+ *   provided if accepting a connection request.  If accepting a connection
+ *   response, this parameter must be NULL.
+ *
+ * Typically, this routine is only called by the listener to accept a connection
+ * request.  It must also be called on the active side of a connection if the
+ * user is performing their own QP transitions.
+ */
+int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param);
+/**
+ * rdma_reject - Called to reject a connection request or response.
+ */
+int rdma_reject(struct rdma_cm_id *id, const void *private_data,
+                u8 private_data_len);
+/**
+ * rdma_disconnect - This function disconnects the associated QP and
+ *   transitions it into the error state.
+ */
+int rdma_disconnect(struct rdma_cm_id *id);
+#endif /* RDMA_CM_H */
diff --git a/include/rdma/rdma_cm_ib.h b/include/rdma/rdma_cm_ib.h
new file mode 100644
index 000000000000..e8c3af1804d4
--- /dev/null
+++ b/include/rdma/rdma_cm_ib.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2006 Intel Corporation.  All rights reserved.
+ *
+ * This Software is licensed under one of the following licenses:
+ *
+ * 1) under the terms of the "Common Public License 1.0" a copy of which is
+ *    available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/cpl.php.
+ *
+ * 2) under the terms of the "The BSD License" a copy of which is
+ *    available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/bsd-license.php.
+ *
+ * 3) under the terms of the "GNU General Public License (GPL) Version 2" a
+ *    copy of which is available from the Open Source Initiative, see
+ *    http://www.opensource.org/licenses/gpl-license.php.
+ *
+ * Licensee has the right to choose one of the above licenses.
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice and one of the license notices.
+ *
+ * Redistributions in binary form must reproduce both the above copyright
+ * notice, one of the license notices in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ */
+#if !defined(RDMA_CM_IB_H)
+#define RDMA_CM_IB_H
+#include <rdma/rdma_cm.h>
+/**
+ * rdma_set_ib_paths - Manually sets the path records used to establish a
+ *   connection.
+ * @id: Connection identifier associated with the request.
+ * @path_rec: Reference to the path record
+ *
+ * This call permits a user to specify routing information for rdma_cm_id's
+ * bound to Infiniband devices.  It is called on the client side of a
+ * connection and replaces the call to rdma_resolve_route.
+ */
+int rdma_set_ib_paths(struct rdma_cm_id *id,
+                      struct ib_sa_path_rec *path_rec, int num_paths);
+#endif /* RDMA_CM_IB_H */

diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h new file mode 100644 index 000000000000..402c63d7226b --- /dev/null +++ b/include/rdma/rdma_cm.h
@@ -0,0 +1,256 @@
	1	/*
	2	* Copyright (c) 2005 Voltaire Inc. All rights reserved.
	3	* Copyright (c) 2005 Intel Corporation. All rights reserved.
	4	*
	5	* This Software is licensed under one of the following licenses:
	6	*
	7	* 1) under the terms of the "Common Public License 1.0" a copy of which is
	8	* available from the Open Source Initiative, see
	9	* http://www.opensource.org/licenses/cpl.php.
	10	*
	11	* 2) under the terms of the "The BSD License" a copy of which is
	12	* available from the Open Source Initiative, see
	13	* http://www.opensource.org/licenses/bsd-license.php.
	14	*
	15	* 3) under the terms of the "GNU General Public License (GPL) Version 2" a
	16	* copy of which is available from the Open Source Initiative, see
	17	* http://www.opensource.org/licenses/gpl-license.php.
	18	*
	19	* Licensee has the right to choose one of the above licenses.
	20	*
	21	* Redistributions of source code must retain the above copyright
	22	* notice and one of the license notices.
	23	*
	24	* Redistributions in binary form must reproduce both the above copyright
	25	* notice, one of the license notices in the documentation
	26	* and/or other materials provided with the distribution.
	27	*
	28	*/
	29
	30	#if !defined(RDMA_CM_H)
	31	#define RDMA_CM_H
	32
	33	#include <linux/socket.h>
	34	#include <linux/in6.h>
	35	#include <rdma/ib_addr.h>
	36	#include <rdma/ib_sa.h>
	37
	38	/*
	39	* Upon receiving a device removal event, users must destroy the associated
	40	* RDMA identifier and release all resources allocated with the device.
	41	*/
	42	enum rdma_cm_event_type {
	43	RDMA_CM_EVENT_ADDR_RESOLVED,
	44	RDMA_CM_EVENT_ADDR_ERROR,
	45	RDMA_CM_EVENT_ROUTE_RESOLVED,
	46	RDMA_CM_EVENT_ROUTE_ERROR,
	47	RDMA_CM_EVENT_CONNECT_REQUEST,
	48	RDMA_CM_EVENT_CONNECT_RESPONSE,
	49	RDMA_CM_EVENT_CONNECT_ERROR,
	50	RDMA_CM_EVENT_UNREACHABLE,
	51	RDMA_CM_EVENT_REJECTED,
	52	RDMA_CM_EVENT_ESTABLISHED,
	53	RDMA_CM_EVENT_DISCONNECTED,
	54	RDMA_CM_EVENT_DEVICE_REMOVAL,
	55	};
	56
	57	enum rdma_port_space {
	58	RDMA_PS_SDP = 0x0001,
	59	RDMA_PS_TCP = 0x0106,
	60	RDMA_PS_UDP = 0x0111,
	61	RDMA_PS_SCTP = 0x0183
	62	};
	63
	64	struct rdma_addr {
	65	struct sockaddr src_addr;
	66	u8 src_pad[sizeof(struct sockaddr_in6) -
	67	sizeof(struct sockaddr)];
	68	struct sockaddr dst_addr;
	69	u8 dst_pad[sizeof(struct sockaddr_in6) -
	70	sizeof(struct sockaddr)];
	71	struct rdma_dev_addr dev_addr;
	72	};
	73
	74	struct rdma_route {
	75	struct rdma_addr addr;
	76	struct ib_sa_path_rec *path_rec;
	77	int num_paths;
	78	};
	79
	80	struct rdma_cm_event {
	81	enum rdma_cm_event_type event;
	82	int status;
	83	void *private_data;
	84	u8 private_data_len;
	85	};
	86
	87	struct rdma_cm_id;
	88
	89	/**
	90	* rdma_cm_event_handler - Callback used to report user events.
	91	*
	92	* Notes: Users may not call rdma_destroy_id from this callback to destroy
	93	* the passed in id, or a corresponding listen id. Returning a
	94	* non-zero value from the callback will destroy the passed in id.
	95	*/
	96	typedef int (rdma_cm_event_handler)(struct rdma_cm_id id,
	97	struct rdma_cm_event *event);
	98
	99	struct rdma_cm_id {
	100	struct ib_device *device;
	101	void *context;
	102	struct ib_qp *qp;
	103	rdma_cm_event_handler event_handler;
	104	struct rdma_route route;
	105	enum rdma_port_space ps;
	106	u8 port_num;
	107	};
	108
	109	/**
	110	* rdma_create_id - Create an RDMA identifier.
	111	*
	112	* @event_handler: User callback invoked to report events associated with the
	113	* returned rdma_id.
	114	* @context: User specified context associated with the id.
	115	* @ps: RDMA port space.
	116	*/
	117	struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler,
	118	void *context, enum rdma_port_space ps);
	119
	120	void rdma_destroy_id(struct rdma_cm_id *id);
	121
	122	/**
	123	* rdma_bind_addr - Bind an RDMA identifier to a source address and
	124	* associated RDMA device, if needed.
	125	*
	126	* @id: RDMA identifier.
	127	* @addr: Local address information. Wildcard values are permitted.
	128	*
	129	* This associates a source address with the RDMA identifier before calling
	130	* rdma_listen. If a specific local address is given, the RDMA identifier will
	131	* be bound to a local RDMA device.
	132	*/
	133	int rdma_bind_addr(struct rdma_cm_id id, struct sockaddr addr);
	134
	135	/**
	136	* rdma_resolve_addr - Resolve destination and optional source addresses
	137	* from IP addresses to an RDMA address. If successful, the specified
	138	* rdma_cm_id will be bound to a local device.
	139	*
	140	* @id: RDMA identifier.
	141	* @src_addr: Source address information. This parameter may be NULL.
	142	* @dst_addr: Destination address information.
	143	* @timeout_ms: Time to wait for resolution to complete.
	144	*/
	145	int rdma_resolve_addr(struct rdma_cm_id id, struct sockaddr src_addr,
	146	struct sockaddr *dst_addr, int timeout_ms);
	147
	148	/**
	149	* rdma_resolve_route - Resolve the RDMA address bound to the RDMA identifier
	150	* into route information needed to establish a connection.
	151	*
	152	* This is called on the client side of a connection.
	153	* Users must have first called rdma_resolve_addr to resolve a dst_addr
	154	* into an RDMA address before calling this routine.
	155	*/
	156	int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms);
	157
	158	/**
	159	* rdma_create_qp - Allocate a QP and associate it with the specified RDMA
	160	* identifier.
	161	*
	162	* QPs allocated to an rdma_cm_id will automatically be transitioned by the CMA
	163	* through their states.
	164	*/
	165	int rdma_create_qp(struct rdma_cm_id id, struct ib_pd pd,
	166	struct ib_qp_init_attr *qp_init_attr);
	167
	168	/**
	169	* rdma_destroy_qp - Deallocate the QP associated with the specified RDMA
	170	* identifier.
	171	*
	172	* Users must destroy any QP associated with an RDMA identifier before
	173	* destroying the RDMA ID.
	174	*/
	175	void rdma_destroy_qp(struct rdma_cm_id *id);
	176
	177	/**
	178	* rdma_init_qp_attr - Initializes the QP attributes for use in transitioning
	179	* to a specified QP state.
	180	* @id: Communication identifier associated with the QP attributes to
	181	* initialize.
	182	* @qp_attr: On input, specifies the desired QP state. On output, the
	183	* mandatory and desired optional attributes will be set in order to
	184	* modify the QP to the specified state.
	185	* @qp_attr_mask: The QP attribute mask that may be used to transition the
	186	* QP to the specified state.
	187	*
	188	* Users must set the @qp_attr->qp_state to the desired QP state. This call
	189	* will set all required attributes for the given transition, along with
	190	* known optional attributes. Users may override the attributes returned from
	191	* this call before calling ib_modify_qp.
	192	*
	193	* Users that wish to have their QP automatically transitioned through its
	194	* states can associate a QP with the rdma_cm_id by calling rdma_create_qp().
	195	*/
	196	int rdma_init_qp_attr(struct rdma_cm_id id, struct ib_qp_attr qp_attr,
	197	int *qp_attr_mask);
	198
	199	struct rdma_conn_param {
	200	const void *private_data;
	201	u8 private_data_len;
	202	u8 responder_resources;
	203	u8 initiator_depth;
	204	u8 flow_control;
	205	u8 retry_count; /* ignored when accepting */
	206	u8 rnr_retry_count;
	207	/* Fields below ignored if a QP is created on the rdma_cm_id. */
	208	u8 srq;
	209	u32 qp_num;
	210	enum ib_qp_type qp_type;
	211	};
	212
	213	/**
	214	* rdma_connect - Initiate an active connection request.
	215	*
	216	* Users must have resolved a route for the rdma_cm_id to connect with
	217	* by having called rdma_resolve_route before calling this routine.
	218	*/
	219	int rdma_connect(struct rdma_cm_id id, struct rdma_conn_param conn_param);
	220
	221	/**
	222	* rdma_listen - This function is called by the passive side to
	223	* listen for incoming connection requests.
	224	*
	225	* Users must have bound the rdma_cm_id to a local address by calling
	226	* rdma_bind_addr before calling this routine.
	227	*/
	228	int rdma_listen(struct rdma_cm_id *id, int backlog);
	229
	230	/**
	231	* rdma_accept - Called to accept a connection request or response.
	232	* @id: Connection identifier associated with the request.
	233	* @conn_param: Information needed to establish the connection. This must be
	234	* provided if accepting a connection request. If accepting a connection
	235	* response, this parameter must be NULL.
	236	*
	237	* Typically, this routine is only called by the listener to accept a connection
	238	* request. It must also be called on the active side of a connection if the
	239	* user is performing their own QP transitions.
	240	*/
	241	int rdma_accept(struct rdma_cm_id id, struct rdma_conn_param conn_param);
	242
	243	/**
	244	* rdma_reject - Called to reject a connection request or response.
	245	*/
	246	int rdma_reject(struct rdma_cm_id id, const void private_data,
	247	u8 private_data_len);
	248
	249	/**
	250	* rdma_disconnect - This function disconnects the associated QP and
	251	* transitions it into the error state.
	252	*/
	253	int rdma_disconnect(struct rdma_cm_id *id);
	254
	255	#endif /* RDMA_CM_H */
	256


diff --git a/include/rdma/rdma_cm_ib.h b/include/rdma/rdma_cm_ib.h new file mode 100644 index 000000000000..e8c3af1804d4 --- /dev/null +++ b/include/rdma/rdma_cm_ib.h
@@ -0,0 +1,47 @@
	1	/*
	2	* Copyright (c) 2006 Intel Corporation. All rights reserved.
	3	*
	4	* This Software is licensed under one of the following licenses:
	5	*
	6	* 1) under the terms of the "Common Public License 1.0" a copy of which is
	7	* available from the Open Source Initiative, see
	8	* http://www.opensource.org/licenses/cpl.php.
	9	*
	10	* 2) under the terms of the "The BSD License" a copy of which is
	11	* available from the Open Source Initiative, see
	12	* http://www.opensource.org/licenses/bsd-license.php.
	13	*
	14	* 3) under the terms of the "GNU General Public License (GPL) Version 2" a
	15	* copy of which is available from the Open Source Initiative, see
	16	* http://www.opensource.org/licenses/gpl-license.php.
	17	*
	18	* Licensee has the right to choose one of the above licenses.
	19	*
	20	* Redistributions of source code must retain the above copyright
	21	* notice and one of the license notices.
	22	*
	23	* Redistributions in binary form must reproduce both the above copyright
	24	* notice, one of the license notices in the documentation
	25	* and/or other materials provided with the distribution.
	26	*
	27	*/
	28
	29	#if !defined(RDMA_CM_IB_H)
	30	#define RDMA_CM_IB_H
	31
	32	#include <rdma/rdma_cm.h>
	33
	34	/**
	35	* rdma_set_ib_paths - Manually sets the path records used to establish a
	36	* connection.
	37	* @id: Connection identifier associated with the request.
	38	* @path_rec: Reference to the path record
	39	*
	40	* This call permits a user to specify routing information for rdma_cm_id's
	41	* bound to Infiniband devices. It is called on the client side of a
	42	* connection and replaces the call to rdma_resolve_route.
	43	*/
	44	int rdma_set_ib_paths(struct rdma_cm_id *id,
	45	struct ib_sa_path_rec *path_rec, int num_paths);
	46
	47	#endif /* RDMA_CM_IB_H */