[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / rdma / ib_cm.h

/*
 * Copyright (c) 2004, 2005 Intel Corporation.  All rights reserved.
 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, 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(IB_CM_H)
#define IB_CM_H

#include <rdma/ib_mad.h>
#include <rdma/ib_sa.h>

/* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */
extern struct class cm_class;

enum ib_cm_state {
	IB_CM_IDLE,
	IB_CM_LISTEN,
	IB_CM_REQ_SENT,
	IB_CM_REQ_RCVD,
	IB_CM_MRA_REQ_SENT,
	IB_CM_MRA_REQ_RCVD,
	IB_CM_REP_SENT,
	IB_CM_REP_RCVD,
	IB_CM_MRA_REP_SENT,
	IB_CM_MRA_REP_RCVD,
	IB_CM_ESTABLISHED,
	IB_CM_DREQ_SENT,
	IB_CM_DREQ_RCVD,
	IB_CM_TIMEWAIT,
	IB_CM_SIDR_REQ_SENT,
	IB_CM_SIDR_REQ_RCVD
};

enum ib_cm_lap_state {
	IB_CM_LAP_UNINIT,
	IB_CM_LAP_IDLE,
	IB_CM_LAP_SENT,
	IB_CM_LAP_RCVD,
	IB_CM_MRA_LAP_SENT,
	IB_CM_MRA_LAP_RCVD,
};

enum ib_cm_event_type {
	IB_CM_REQ_ERROR,
	IB_CM_REQ_RECEIVED,
	IB_CM_REP_ERROR,
	IB_CM_REP_RECEIVED,
	IB_CM_RTU_RECEIVED,
	IB_CM_USER_ESTABLISHED,
	IB_CM_DREQ_ERROR,
	IB_CM_DREQ_RECEIVED,
	IB_CM_DREP_RECEIVED,
	IB_CM_TIMEWAIT_EXIT,
	IB_CM_MRA_RECEIVED,
	IB_CM_REJ_RECEIVED,
	IB_CM_LAP_ERROR,
	IB_CM_LAP_RECEIVED,
	IB_CM_APR_RECEIVED,
	IB_CM_SIDR_REQ_ERROR,
	IB_CM_SIDR_REQ_RECEIVED,
	IB_CM_SIDR_REP_RECEIVED
};

enum ib_cm_data_size {
	IB_CM_REQ_PRIVATE_DATA_SIZE	 = 92,
	IB_CM_MRA_PRIVATE_DATA_SIZE	 = 222,
	IB_CM_REJ_PRIVATE_DATA_SIZE	 = 148,
	IB_CM_REP_PRIVATE_DATA_SIZE	 = 196,
	IB_CM_RTU_PRIVATE_DATA_SIZE	 = 224,
	IB_CM_DREQ_PRIVATE_DATA_SIZE	 = 220,
	IB_CM_DREP_PRIVATE_DATA_SIZE	 = 224,
	IB_CM_REJ_ARI_LENGTH		 = 72,
	IB_CM_LAP_PRIVATE_DATA_SIZE	 = 168,
	IB_CM_APR_PRIVATE_DATA_SIZE	 = 148,
	IB_CM_APR_INFO_LENGTH		 = 72,
	IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
	IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
	IB_CM_SIDR_REP_INFO_LENGTH	 = 72,
	IB_CM_COMPARE_SIZE		 = 64
};

struct ib_cm_id;

struct ib_cm_req_event_param {
	struct ib_cm_id		*listen_id;
	u8			port;

	struct ib_sa_path_rec	*primary_path;
	struct ib_sa_path_rec	*alternate_path;

	__be64			remote_ca_guid;
	u32			remote_qkey;
	u32			remote_qpn;
	enum ib_qp_type		qp_type;

	u32			starting_psn;
	u8			responder_resources;
	u8			initiator_depth;
	unsigned int		local_cm_response_timeout:5;
	unsigned int		flow_control:1;
	unsigned int		remote_cm_response_timeout:5;
	unsigned int		retry_count:3;
	unsigned int		rnr_retry_count:3;
	unsigned int		srq:1;
};

struct ib_cm_rep_event_param {
	__be64			remote_ca_guid;
	u32			remote_qkey;
	u32			remote_qpn;
	u32			starting_psn;
	u8			responder_resources;
	u8			initiator_depth;
	unsigned int		target_ack_delay:5;
	unsigned int		failover_accepted:2;
	unsigned int		flow_control:1;
	unsigned int		rnr_retry_count:3;
	unsigned int		srq:1;
};

enum ib_cm_rej_reason {
	IB_CM_REJ_NO_QP				= 1,
	IB_CM_REJ_NO_EEC			= 2,
	IB_CM_REJ_NO_RESOURCES			= 3,
	IB_CM_REJ_TIMEOUT			= 4,
	IB_CM_REJ_UNSUPPORTED			= 5,
	IB_CM_REJ_INVALID_COMM_ID		= 6,
	IB_CM_REJ_INVALID_COMM_INSTANCE		= 7,
	IB_CM_REJ_INVALID_SERVICE_ID		= 8,
	IB_CM_REJ_INVALID_TRANSPORT_TYPE	= 9,
	IB_CM_REJ_STALE_CONN			= 10,
	IB_CM_REJ_RDC_NOT_EXIST			= 11,
	IB_CM_REJ_INVALID_GID			= 12,
	IB_CM_REJ_INVALID_LID			= 13,
	IB_CM_REJ_INVALID_SL			= 14,
	IB_CM_REJ_INVALID_TRAFFIC_CLASS		= 15,
	IB_CM_REJ_INVALID_HOP_LIMIT		= 16,
	IB_CM_REJ_INVALID_PACKET_RATE		= 17,
	IB_CM_REJ_INVALID_ALT_GID		= 18,
	IB_CM_REJ_INVALID_ALT_LID		= 19,
	IB_CM_REJ_INVALID_ALT_SL		= 20,
	IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS	= 21,
	IB_CM_REJ_INVALID_ALT_HOP_LIMIT		= 22,
	IB_CM_REJ_INVALID_ALT_PACKET_RATE	= 23,
	IB_CM_REJ_PORT_CM_REDIRECT		= 24,
	IB_CM_REJ_PORT_REDIRECT			= 25,
	IB_CM_REJ_INVALID_MTU			= 26,
	IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES	= 27,
	IB_CM_REJ_CONSUMER_DEFINED		= 28,
	IB_CM_REJ_INVALID_RNR_RETRY		= 29,
	IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID	= 30,
	IB_CM_REJ_INVALID_CLASS_VERSION		= 31,
	IB_CM_REJ_INVALID_FLOW_LABEL		= 32,
	IB_CM_REJ_INVALID_ALT_FLOW_LABEL	= 33
};

struct ib_cm_rej_event_param {
	enum ib_cm_rej_reason	reason;
	void			*ari;
	u8			ari_length;
};

struct ib_cm_mra_event_param {
	u8	service_timeout;
};

struct ib_cm_lap_event_param {
	struct ib_sa_path_rec	*alternate_path;
};

enum ib_cm_apr_status {
	IB_CM_APR_SUCCESS,
	IB_CM_APR_INVALID_COMM_ID,
	IB_CM_APR_UNSUPPORTED,
	IB_CM_APR_REJECT,
	IB_CM_APR_REDIRECT,
	IB_CM_APR_IS_CURRENT,
	IB_CM_APR_INVALID_QPN_EECN,
	IB_CM_APR_INVALID_LID,
	IB_CM_APR_INVALID_GID,
	IB_CM_APR_INVALID_FLOW_LABEL,
	IB_CM_APR_INVALID_TCLASS,
	IB_CM_APR_INVALID_HOP_LIMIT,
	IB_CM_APR_INVALID_PACKET_RATE,
	IB_CM_APR_INVALID_SL
};

struct ib_cm_apr_event_param {
	enum ib_cm_apr_status	ap_status;
	void			*apr_info;
	u8			info_len;
};

struct ib_cm_sidr_req_event_param {
	struct ib_cm_id		*listen_id;
	u8			port;
	u16			pkey;
};

enum ib_cm_sidr_status {
	IB_SIDR_SUCCESS,
	IB_SIDR_UNSUPPORTED,
	IB_SIDR_REJECT,
	IB_SIDR_NO_QP,
	IB_SIDR_REDIRECT,
	IB_SIDR_UNSUPPORTED_VERSION
};

struct ib_cm_sidr_rep_event_param {
	enum ib_cm_sidr_status	status;
	u32			qkey;
	u32			qpn;
	void			*info;
	u8			info_len;
};

struct ib_cm_event {
	enum ib_cm_event_type	event;
	union {
		struct ib_cm_req_event_param	req_rcvd;
		struct ib_cm_rep_event_param	rep_rcvd;
		/* No data for RTU received events. */
		struct ib_cm_rej_event_param	rej_rcvd;
		struct ib_cm_mra_event_param	mra_rcvd;
		struct ib_cm_lap_event_param	lap_rcvd;
		struct ib_cm_apr_event_param	apr_rcvd;
		/* No data for DREQ/DREP received events. */
		struct ib_cm_sidr_req_event_param sidr_req_rcvd;
		struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
		enum ib_wc_status		send_status;
	} param;

	void			*private_data;
};

/**
 * ib_cm_handler - User-defined callback to process communication events.
 * @cm_id: Communication identifier associated with the reported event.
 * @event: Information about the communication event.
 *
 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events
 * generated as a result of listen requests result in the allocation of a
 * new @cm_id.  The new @cm_id is returned to the user through this callback.
 * Clients are responsible for destroying the new @cm_id.  For peer-to-peer
 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds
 * to a user's existing communication identifier.
 *
 * Users may not call ib_destroy_cm_id while in the context of this callback;
 * however, returning a non-zero value instructs the communication manager to
 * destroy the @cm_id after the callback completes.
 */
typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
			     struct ib_cm_event *event);

struct ib_cm_id {
	ib_cm_handler		cm_handler;
	void			*context;
	struct ib_device	*device;
	__be64			service_id;
	__be64			service_mask;
	enum ib_cm_state	state;		/* internal CM/debug use */
	enum ib_cm_lap_state	lap_state;	/* internal CM/debug use */
	__be32			local_id;
	__be32			remote_id;
	u32			remote_cm_qpn;  /* 1 unless redirected */
};

/**
 * ib_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, service
 * ID resolution requests, and listen requests.
 */
struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
				 ib_cm_handler cm_handler,
				 void *context);

/**
 * ib_destroy_cm_id - Destroy a connection identifier.
 * @cm_id: Connection identifier to destroy.
 *
 * This call blocks until the connection identifier is destroyed.
 */
void ib_destroy_cm_id(struct ib_cm_id *cm_id);

#define IB_SERVICE_ID_AGN_MASK	cpu_to_be64(0xFF00000000000000ULL)
#define IB_CM_ASSIGN_SERVICE_ID	cpu_to_be64(0x0200000000000000ULL)
#define IB_CMA_SERVICE_ID	cpu_to_be64(0x0000000001000000ULL)
#define IB_CMA_SERVICE_ID_MASK	cpu_to_be64(0xFFFFFFFFFF000000ULL)
#define IB_SDP_SERVICE_ID	cpu_to_be64(0x0000000000010000ULL)
#define IB_SDP_SERVICE_ID_MASK	cpu_to_be64(0xFFFFFFFFFFFF0000ULL)

struct ib_cm_compare_data {
	u8  data[IB_CM_COMPARE_SIZE];
	u8  mask[IB_CM_COMPARE_SIZE];
};

/**
 * ib_cm_listen - Initiates listening on the specified service ID for
 *   connection and service ID resolution requests.
 * @cm_id: Connection identifier associated with the listen request.
 * @service_id: Service identifier matched against incoming connection
 *   and service ID resolution requests.  The service ID should be specified
 *   network-byte order.  If set to IB_CM_ASSIGN_SERVICE_ID, the CM will
 *   assign a service ID to the caller.
 * @service_mask: Mask applied to service ID used to listen across a
 *   range of service IDs.  If set to 0, the service ID is matched
 *   exactly.  This parameter is ignored if %service_id is set to
 *   IB_CM_ASSIGN_SERVICE_ID.
 * @compare_data: This parameter is optional.  It specifies data that must
 *   appear in the private data of a connection request for the specified
 *   listen request.
 */
int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
		 struct ib_cm_compare_data *compare_data);

struct ib_cm_req_param {
	struct ib_sa_path_rec	*primary_path;
	struct ib_sa_path_rec	*alternate_path;
	__be64			service_id;
	u32			qp_num;
	enum ib_qp_type		qp_type;
	u32			starting_psn;
	const void		*private_data;
	u8			private_data_len;
	u8			peer_to_peer;
	u8			responder_resources;
	u8			initiator_depth;
	u8			remote_cm_response_timeout;
	u8			flow_control;
	u8			local_cm_response_timeout;
	u8			retry_count;
	u8			rnr_retry_count;
	u8			max_cm_retries;
	u8			srq;
};

/**
 * ib_send_cm_req - Sends a connection request to the remote node.
 * @cm_id: Connection identifier that will be associated with the
 *   connection request.
 * @param: Connection request information needed to establish the
 *   connection.
 */
int ib_send_cm_req(struct ib_cm_id *cm_id,
		   struct ib_cm_req_param *param);

struct ib_cm_rep_param {
	u32		qp_num;
	u32		starting_psn;
	const void	*private_data;
	u8		private_data_len;
	u8		responder_resources;
	u8		initiator_depth;
	u8		failover_accepted;
	u8		flow_control;
	u8		rnr_retry_count;
	u8		srq;
};

/**
 * ib_send_cm_rep - Sends a connection reply in response to a connection
 *   request.
 * @cm_id: Connection identifier that will be associated with the
 *   connection request.
 * @param: Connection reply information needed to establish the
 *   connection.
 */
int ib_send_cm_rep(struct ib_cm_id *cm_id,
		   struct ib_cm_rep_param *param);

/**
 * ib_send_cm_rtu - Sends a connection ready to use message in response
 *   to a connection reply message.
 * @cm_id: Connection identifier associated with the connection request.
 * @private_data: Optional user-defined private data sent with the
 *   ready to use message.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_rtu(struct ib_cm_id *cm_id,
		   const void *private_data,
		   u8 private_data_len);

/**
 * ib_send_cm_dreq - Sends a disconnection request for an existing
 *   connection.
 * @cm_id: Connection identifier associated with the connection being
 *   released.
 * @private_data: Optional user-defined private data sent with the
 *   disconnection request message.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_dreq(struct ib_cm_id *cm_id,
		    const void *private_data,
		    u8 private_data_len);

/**
 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request.
 * @cm_id: Connection identifier associated with the connection being
 *   released.
 * @private_data: Optional user-defined private data sent with the
 *   disconnection reply message.
 * @private_data_len: Size of the private data buffer, in bytes.
 *
 * If the cm_id is in the correct state, the CM will transition the connection
 * to the timewait state, even if an error occurs sending the DREP message.
 */
int ib_send_cm_drep(struct ib_cm_id *cm_id,
		    const void *private_data,
		    u8 private_data_len);

/**
 * ib_cm_notify - Notifies the CM of an event reported to the consumer.
 * @cm_id: Connection identifier to transition to established.
 * @event: Type of event.
 *
 * This routine should be invoked by users to notify the CM of relevant
 * communication events.  Events that should be reported to the CM and
 * when to report them are:
 *
 * IB_EVENT_COMM_EST - Used when a message is received on a connected
 *    QP before an RTU has been received.
 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over
 *   to the alternate path.
 */
int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);

/**
 * ib_send_cm_rej - Sends a connection rejection message to the
 *   remote node.
 * @cm_id: Connection identifier associated with the connection being
 *   rejected.
 * @reason: Reason for the connection request rejection.
 * @ari: Optional additional rejection information.
 * @ari_length: Size of the additional rejection information, in bytes.
 * @private_data: Optional user-defined private data sent with the
 *   rejection message.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_rej(struct ib_cm_id *cm_id,
		   enum ib_cm_rej_reason reason,
		   void *ari,
		   u8 ari_length,
		   const void *private_data,
		   u8 private_data_len);

#define IB_CM_MRA_FLAG_DELAY 0x80  /* Send MRA only after a duplicate msg */

/**
 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
 *   message.
 * @cm_id: Connection identifier associated with the connection message.
 * @service_timeout: The lower 5-bits specify the maximum time required for
 *   the sender to reply to the connection message.  The upper 3-bits
 *   specify additional control flags.
 * @private_data: Optional user-defined private data sent with the
 *   message receipt acknowledgement.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_mra(struct ib_cm_id *cm_id,
		   u8 service_timeout,
		   const void *private_data,
		   u8 private_data_len);

/**
 * ib_send_cm_lap - Sends a load alternate path request.
 * @cm_id: Connection identifier associated with the load alternate path
 *   message.
 * @alternate_path: A path record that identifies the alternate path to
 *   load.
 * @private_data: Optional user-defined private data sent with the
 *   load alternate path message.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_lap(struct ib_cm_id *cm_id,
		   struct ib_sa_path_rec *alternate_path,
		   const void *private_data,
		   u8 private_data_len);

/**
 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning
 *   to a specified QP state.
 * @cm_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.
 */
int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
		       struct ib_qp_attr *qp_attr,
		       int *qp_attr_mask);

/**
 * ib_send_cm_apr - Sends an alternate path response message in response to
 *   a load alternate path request.
 * @cm_id: Connection identifier associated with the alternate path response.
 * @status: Reply status sent with the alternate path response.
 * @info: Optional additional information sent with the alternate path
 *   response.
 * @info_length: Size of the additional information, in bytes.
 * @private_data: Optional user-defined private data sent with the
 *   alternate path response message.
 * @private_data_len: Size of the private data buffer, in bytes.
 */
int ib_send_cm_apr(struct ib_cm_id *cm_id,
		   enum ib_cm_apr_status status,
		   void *info,
		   u8 info_length,
		   const void *private_data,
		   u8 private_data_len);

struct ib_cm_sidr_req_param {
	struct ib_sa_path_rec	*path;
	__be64			service_id;
	int			timeout_ms;
	const void		*private_data;
	u8			private_data_len;
	u8			max_cm_retries;
};

/**
 * ib_send_cm_sidr_req - Sends a service ID resolution request to the
 *   remote node.
 * @cm_id: Communication identifier that will be associated with the
 *   service ID resolution request.
 * @param: Service ID resolution request information.
 */
int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
			struct ib_cm_sidr_req_param *param);

struct ib_cm_sidr_rep_param {
	u32			qp_num;
	u32			qkey;
	enum ib_cm_sidr_status	status;
	const void		*info;
	u8			info_length;
	const void		*private_data;
	u8			private_data_len;
};

/**
 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the
 *   remote node.
 * @cm_id: Communication identifier associated with the received service ID
 *   resolution request.
 * @param: Service ID resolution reply information.
 */
int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
			struct ib_cm_sidr_rep_param *param);

#endif /* IB_CM_H */
Commit	Line	Data
c3e01647	1	/*
07d357d0	2	* Copyright (c) 2004, 2005 Intel Corporation. All rights reserved.
c3e01647 HR	3	* Copyright (c) 2004 Topspin Corporation. All rights reserved.
	4	* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
	5	* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
	6	*
	7	* This software is available to you under a choice of one of two
	8	* licenses. You may choose to be licensed under the terms of the GNU
	9	* General Public License (GPL) Version 2, available from the file
	10	* COPYING in the main directory of this source tree, or the
	11	* OpenIB.org BSD license below:
	12	*
	13	* Redistribution and use in source and binary forms, with or
	14	* without modification, are permitted provided that the following
	15	* conditions are met:
	16	*
	17	* - Redistributions of source code must retain the above
	18	* copyright notice, this list of conditions and the following
	19	* disclaimer.
	20	*
	21	* - Redistributions in binary form must reproduce the above
	22	* copyright notice, this list of conditions and the following
	23	* disclaimer in the documentation and/or other materials
	24	* provided with the distribution.
	25	*
	26	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	27	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	28	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	29	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	30	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	31	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	32	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	33	* SOFTWARE.
c3e01647 HR	34	*/
	35	#if !defined(IB_CM_H)
	36	#define IB_CM_H
	37
a4d61e84 RD	38	#include <rdma/ib_mad.h>
a4d61e84 RD	39	#include <rdma/ib_sa.h>
c3e01647	40
c89d1bed SH	41	/* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */
	42	extern struct class cm_class;
	43
c3e01647 HR	44	enum ib_cm_state {
	45	IB_CM_IDLE,
	46	IB_CM_LISTEN,
	47	IB_CM_REQ_SENT,
	48	IB_CM_REQ_RCVD,
	49	IB_CM_MRA_REQ_SENT,
	50	IB_CM_MRA_REQ_RCVD,
	51	IB_CM_REP_SENT,
	52	IB_CM_REP_RCVD,
	53	IB_CM_MRA_REP_SENT,
	54	IB_CM_MRA_REP_RCVD,
	55	IB_CM_ESTABLISHED,
	56	IB_CM_DREQ_SENT,
	57	IB_CM_DREQ_RCVD,
	58	IB_CM_TIMEWAIT,
	59	IB_CM_SIDR_REQ_SENT,
	60	IB_CM_SIDR_REQ_RCVD
	61	};
	62
	63	enum ib_cm_lap_state {
e1444b5a	64	IB_CM_LAP_UNINIT,
c3e01647 HR	65	IB_CM_LAP_IDLE,
	66	IB_CM_LAP_SENT,
	67	IB_CM_LAP_RCVD,
	68	IB_CM_MRA_LAP_SENT,
	69	IB_CM_MRA_LAP_RCVD,
	70	};
	71
	72	enum ib_cm_event_type {
	73	IB_CM_REQ_ERROR,
	74	IB_CM_REQ_RECEIVED,
	75	IB_CM_REP_ERROR,
	76	IB_CM_REP_RECEIVED,
	77	IB_CM_RTU_RECEIVED,
	78	IB_CM_USER_ESTABLISHED,
	79	IB_CM_DREQ_ERROR,
	80	IB_CM_DREQ_RECEIVED,
	81	IB_CM_DREP_RECEIVED,
	82	IB_CM_TIMEWAIT_EXIT,
	83	IB_CM_MRA_RECEIVED,
	84	IB_CM_REJ_RECEIVED,
	85	IB_CM_LAP_ERROR,
	86	IB_CM_LAP_RECEIVED,
	87	IB_CM_APR_RECEIVED,
	88	IB_CM_SIDR_REQ_ERROR,
	89	IB_CM_SIDR_REQ_RECEIVED,
	90	IB_CM_SIDR_REP_RECEIVED
	91	};
	92
	93	enum ib_cm_data_size {
	94	IB_CM_REQ_PRIVATE_DATA_SIZE = 92,
	95	IB_CM_MRA_PRIVATE_DATA_SIZE = 222,
	96	IB_CM_REJ_PRIVATE_DATA_SIZE = 148,
	97	IB_CM_REP_PRIVATE_DATA_SIZE = 196,
	98	IB_CM_RTU_PRIVATE_DATA_SIZE = 224,
	99	IB_CM_DREQ_PRIVATE_DATA_SIZE = 220,
	100	IB_CM_DREP_PRIVATE_DATA_SIZE = 224,
	101	IB_CM_REJ_ARI_LENGTH = 72,
	102	IB_CM_LAP_PRIVATE_DATA_SIZE = 168,
	103	IB_CM_APR_PRIVATE_DATA_SIZE = 148,
	104	IB_CM_APR_INFO_LENGTH = 72,
	105	IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
	106	IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
6e61d04f SH	107	IB_CM_SIDR_REP_INFO_LENGTH = 72,
6e61d04f SH	108	IB_CM_COMPARE_SIZE = 64
c3e01647 HR	109	};
	110
	111	struct ib_cm_id;
	112
	113	struct ib_cm_req_event_param {
	114	struct ib_cm_id *listen_id;
c3e01647 HR	115	u8 port;
	116
	117	struct ib_sa_path_rec *primary_path;
	118	struct ib_sa_path_rec *alternate_path;
	119
97f52eb4	120	__be64 remote_ca_guid;
c3e01647 HR	121	u32 remote_qkey;
	122	u32 remote_qpn;
	123	enum ib_qp_type qp_type;
	124
	125	u32 starting_psn;
	126	u8 responder_resources;
	127	u8 initiator_depth;
	128	unsigned int local_cm_response_timeout:5;
	129	unsigned int flow_control:1;
	130	unsigned int remote_cm_response_timeout:5;
	131	unsigned int retry_count:3;
	132	unsigned int rnr_retry_count:3;
	133	unsigned int srq:1;
	134	};
	135
	136	struct ib_cm_rep_event_param {
97f52eb4	137	__be64 remote_ca_guid;
c3e01647 HR	138	u32 remote_qkey;
	139	u32 remote_qpn;
	140	u32 starting_psn;
	141	u8 responder_resources;
	142	u8 initiator_depth;
	143	unsigned int target_ack_delay:5;
	144	unsigned int failover_accepted:2;
	145	unsigned int flow_control:1;
	146	unsigned int rnr_retry_count:3;
	147	unsigned int srq:1;
	148	};
	149
	150	enum ib_cm_rej_reason {
97f52eb4 SH	151	IB_CM_REJ_NO_QP = 1,
	152	IB_CM_REJ_NO_EEC = 2,
	153	IB_CM_REJ_NO_RESOURCES = 3,
	154	IB_CM_REJ_TIMEOUT = 4,
	155	IB_CM_REJ_UNSUPPORTED = 5,
	156	IB_CM_REJ_INVALID_COMM_ID = 6,
	157	IB_CM_REJ_INVALID_COMM_INSTANCE = 7,
	158	IB_CM_REJ_INVALID_SERVICE_ID = 8,
	159	IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9,
	160	IB_CM_REJ_STALE_CONN = 10,
	161	IB_CM_REJ_RDC_NOT_EXIST = 11,
	162	IB_CM_REJ_INVALID_GID = 12,
	163	IB_CM_REJ_INVALID_LID = 13,
	164	IB_CM_REJ_INVALID_SL = 14,
	165	IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15,
	166	IB_CM_REJ_INVALID_HOP_LIMIT = 16,
	167	IB_CM_REJ_INVALID_PACKET_RATE = 17,
	168	IB_CM_REJ_INVALID_ALT_GID = 18,
	169	IB_CM_REJ_INVALID_ALT_LID = 19,
	170	IB_CM_REJ_INVALID_ALT_SL = 20,
	171	IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21,
	172	IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22,
	173	IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23,
	174	IB_CM_REJ_PORT_CM_REDIRECT = 24,
	175	IB_CM_REJ_PORT_REDIRECT = 25,
	176	IB_CM_REJ_INVALID_MTU = 26,
	177	IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27,
	178	IB_CM_REJ_CONSUMER_DEFINED = 28,
	179	IB_CM_REJ_INVALID_RNR_RETRY = 29,
	180	IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30,
	181	IB_CM_REJ_INVALID_CLASS_VERSION = 31,
	182	IB_CM_REJ_INVALID_FLOW_LABEL = 32,
	183	IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33
c3e01647 HR	184	};
	185
	186	struct ib_cm_rej_event_param {
	187	enum ib_cm_rej_reason reason;
	188	void *ari;
	189	u8 ari_length;
	190	};
	191
	192	struct ib_cm_mra_event_param {
	193	u8 service_timeout;
	194	};
	195
	196	struct ib_cm_lap_event_param {
	197	struct ib_sa_path_rec *alternate_path;
	198	};
	199
	200	enum ib_cm_apr_status {
	201	IB_CM_APR_SUCCESS,
	202	IB_CM_APR_INVALID_COMM_ID,
	203	IB_CM_APR_UNSUPPORTED,
	204	IB_CM_APR_REJECT,
	205	IB_CM_APR_REDIRECT,
	206	IB_CM_APR_IS_CURRENT,
	207	IB_CM_APR_INVALID_QPN_EECN,
	208	IB_CM_APR_INVALID_LID,
	209	IB_CM_APR_INVALID_GID,
	210	IB_CM_APR_INVALID_FLOW_LABEL,
	211	IB_CM_APR_INVALID_TCLASS,
	212	IB_CM_APR_INVALID_HOP_LIMIT,
	213	IB_CM_APR_INVALID_PACKET_RATE,
	214	IB_CM_APR_INVALID_SL
	215	};
	216
	217	struct ib_cm_apr_event_param {
	218	enum ib_cm_apr_status ap_status;
	219	void *apr_info;
	220	u8 info_len;
	221	};
	222
	223	struct ib_cm_sidr_req_event_param {
	224	struct ib_cm_id *listen_id;
c3e01647	225	u8 port;
97f52eb4	226	u16 pkey;
c3e01647 HR	227	};
	228
	229	enum ib_cm_sidr_status {
	230	IB_SIDR_SUCCESS,
	231	IB_SIDR_UNSUPPORTED,
	232	IB_SIDR_REJECT,
	233	IB_SIDR_NO_QP,
	234	IB_SIDR_REDIRECT,
	235	IB_SIDR_UNSUPPORTED_VERSION
	236	};
	237
	238	struct ib_cm_sidr_rep_event_param {
	239	enum ib_cm_sidr_status status;
	240	u32 qkey;
	241	u32 qpn;
	242	void *info;
	243	u8 info_len;
c3e01647 HR	244	};
	245
	246	struct ib_cm_event {
	247	enum ib_cm_event_type event;
	248	union {
	249	struct ib_cm_req_event_param req_rcvd;
	250	struct ib_cm_rep_event_param rep_rcvd;
	251	/* No data for RTU received events. */
	252	struct ib_cm_rej_event_param rej_rcvd;
	253	struct ib_cm_mra_event_param mra_rcvd;
	254	struct ib_cm_lap_event_param lap_rcvd;
	255	struct ib_cm_apr_event_param apr_rcvd;
	256	/* No data for DREQ/DREP received events. */
	257	struct ib_cm_sidr_req_event_param sidr_req_rcvd;
	258	struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
	259	enum ib_wc_status send_status;
	260	} param;
	261
	262	void *private_data;
	263	};
	264
	265	/**
	266	* ib_cm_handler - User-defined callback to process communication events.
	267	* @cm_id: Communication identifier associated with the reported event.
	268	* @event: Information about the communication event.
	269	*
	270	* IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events
	271	* generated as a result of listen requests result in the allocation of a
	272	* new @cm_id. The new @cm_id is returned to the user through this callback.
	273	* Clients are responsible for destroying the new @cm_id. For peer-to-peer
	274	* IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds
	275	* to a user's existing communication identifier.
	276	*
	277	* Users may not call ib_destroy_cm_id while in the context of this callback;
	278	* however, returning a non-zero value instructs the communication manager to
	279	* destroy the @cm_id after the callback completes.
	280	*/
	281	typedef int (ib_cm_handler)(struct ib_cm_id cm_id,
	282	struct ib_cm_event *event);
	283
	284	struct ib_cm_id {
	285	ib_cm_handler cm_handler;
	286	void *context;
07d357d0	287	struct ib_device *device;
97f52eb4 SH	288	__be64 service_id;
97f52eb4 SH	289	__be64 service_mask;
c3e01647 HR	290	enum ib_cm_state state; /* internal CM/debug use */
c3e01647 HR	291	enum ib_cm_lap_state lap_state; /* internal CM/debug use */
97f52eb4 SH	292	__be32 local_id;
97f52eb4 SH	293	__be32 remote_id;
354ba39c	294	u32 remote_cm_qpn; /* 1 unless redirected */
c3e01647 HR	295	};
	296
	297	/**
	298	* ib_create_cm_id - Allocate a communication identifier.
07d357d0 SH	299	* @device: Device associated with the cm_id. All related communication will
07d357d0 SH	300	* be associated with the specified device.
c3e01647 HR	301	* @cm_handler: Callback invoked to notify the user of CM events.
	302	* @context: User specified context associated with the communication
	303	* identifier.
	304	*
	305	* Communication identifiers are used to track connection states, service
	306	* ID resolution requests, and listen requests.
	307	*/
07d357d0 SH	308	struct ib_cm_id ib_create_cm_id(struct ib_device device,
07d357d0 SH	309	ib_cm_handler cm_handler,
c3e01647 HR	310	void *context);
	311
	312	/**
	313	* ib_destroy_cm_id - Destroy a connection identifier.
	314	* @cm_id: Connection identifier to destroy.
	315	*
	316	* This call blocks until the connection identifier is destroyed.
	317	*/
	318	void ib_destroy_cm_id(struct ib_cm_id *cm_id);
	319
9c3da099 HH	320	#define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL)
	321	#define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
	322	#define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL)
	323	#define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL)
	324	#define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
	325	#define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
6e61d04f SH	326
	327	struct ib_cm_compare_data {
	328	u8 data[IB_CM_COMPARE_SIZE];
	329	u8 mask[IB_CM_COMPARE_SIZE];
	330	};
c3e01647 HR	331
	332	/**
	333	* ib_cm_listen - Initiates listening on the specified service ID for
	334	* connection and service ID resolution requests.
	335	* @cm_id: Connection identifier associated with the listen request.
	336	* @service_id: Service identifier matched against incoming connection
	337	* and service ID resolution requests. The service ID should be specified
	338	* network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will
	339	* assign a service ID to the caller.
	340	* @service_mask: Mask applied to service ID used to listen across a
	341	* range of service IDs. If set to 0, the service ID is matched
	342	* exactly. This parameter is ignored if %service_id is set to
	343	* IB_CM_ASSIGN_SERVICE_ID.
6e61d04f SH	344	* @compare_data: This parameter is optional. It specifies data that must
	345	* appear in the private data of a connection request for the specified
	346	* listen request.
c3e01647	347	*/
6e61d04f SH	348	int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
6e61d04f SH	349	struct ib_cm_compare_data *compare_data);
c3e01647 HR	350
	351	struct ib_cm_req_param {
	352	struct ib_sa_path_rec *primary_path;
	353	struct ib_sa_path_rec *alternate_path;
97f52eb4	354	__be64 service_id;
c3e01647 HR	355	u32 qp_num;
	356	enum ib_qp_type qp_type;
	357	u32 starting_psn;
	358	const void *private_data;
	359	u8 private_data_len;
	360	u8 peer_to_peer;
	361	u8 responder_resources;
	362	u8 initiator_depth;
	363	u8 remote_cm_response_timeout;
	364	u8 flow_control;
	365	u8 local_cm_response_timeout;
	366	u8 retry_count;
	367	u8 rnr_retry_count;
	368	u8 max_cm_retries;
	369	u8 srq;
	370	};
	371
	372	/**
	373	* ib_send_cm_req - Sends a connection request to the remote node.
	374	* @cm_id: Connection identifier that will be associated with the
	375	* connection request.
	376	* @param: Connection request information needed to establish the
	377	* connection.
	378	*/
	379	int ib_send_cm_req(struct ib_cm_id *cm_id,
	380	struct ib_cm_req_param *param);
	381
	382	struct ib_cm_rep_param {
	383	u32 qp_num;
	384	u32 starting_psn;
	385	const void *private_data;
	386	u8 private_data_len;
	387	u8 responder_resources;
	388	u8 initiator_depth;
c3e01647 HR	389	u8 failover_accepted;
	390	u8 flow_control;
	391	u8 rnr_retry_count;
	392	u8 srq;
	393	};
	394
	395	/**
	396	* ib_send_cm_rep - Sends a connection reply in response to a connection
	397	* request.
	398	* @cm_id: Connection identifier that will be associated with the
	399	* connection request.
	400	* @param: Connection reply information needed to establish the
	401	* connection.
	402	*/
	403	int ib_send_cm_rep(struct ib_cm_id *cm_id,
	404	struct ib_cm_rep_param *param);
	405
	406	/**
	407	* ib_send_cm_rtu - Sends a connection ready to use message in response
	408	* to a connection reply message.
	409	* @cm_id: Connection identifier associated with the connection request.
	410	* @private_data: Optional user-defined private data sent with the
	411	* ready to use message.
	412	* @private_data_len: Size of the private data buffer, in bytes.
	413	*/
	414	int ib_send_cm_rtu(struct ib_cm_id *cm_id,
	415	const void *private_data,
	416	u8 private_data_len);
	417
	418	/**
	419	* ib_send_cm_dreq - Sends a disconnection request for an existing
	420	* connection.
	421	* @cm_id: Connection identifier associated with the connection being
	422	* released.
	423	* @private_data: Optional user-defined private data sent with the
	424	* disconnection request message.
	425	* @private_data_len: Size of the private data buffer, in bytes.
	426	*/
	427	int ib_send_cm_dreq(struct ib_cm_id *cm_id,
	428	const void *private_data,
	429	u8 private_data_len);
	430
	431	/**
	432	* ib_send_cm_drep - Sends a disconnection reply to a disconnection request.
	433	* @cm_id: Connection identifier associated with the connection being
	434	* released.
	435	* @private_data: Optional user-defined private data sent with the
	436	* disconnection reply message.
	437	* @private_data_len: Size of the private data buffer, in bytes.
	438	*
	439	* If the cm_id is in the correct state, the CM will transition the connection
	440	* to the timewait state, even if an error occurs sending the DREP message.
	441	*/
	442	int ib_send_cm_drep(struct ib_cm_id *cm_id,
	443	const void *private_data,
	444	u8 private_data_len);
	445
	446	/**
e1444b5a	447	* ib_cm_notify - Notifies the CM of an event reported to the consumer.
c3e01647	448	* @cm_id: Connection identifier to transition to established.
e1444b5a	449	* @event: Type of event.
c3e01647	450	*
e1444b5a SH	451	* This routine should be invoked by users to notify the CM of relevant
	452	* communication events. Events that should be reported to the CM and
	453	* when to report them are:
	454	*
	455	* IB_EVENT_COMM_EST - Used when a message is received on a connected
	456	* QP before an RTU has been received.
	457	* IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over
	458	* to the alternate path.
c3e01647	459	*/
e1444b5a	460	int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
c3e01647 HR	461
	462	/**
	463	* ib_send_cm_rej - Sends a connection rejection message to the
	464	* remote node.
	465	* @cm_id: Connection identifier associated with the connection being
	466	* rejected.
	467	* @reason: Reason for the connection request rejection.
	468	* @ari: Optional additional rejection information.
	469	* @ari_length: Size of the additional rejection information, in bytes.
	470	* @private_data: Optional user-defined private data sent with the
	471	* rejection message.
	472	* @private_data_len: Size of the private data buffer, in bytes.
	473	*/
	474	int ib_send_cm_rej(struct ib_cm_id *cm_id,
	475	enum ib_cm_rej_reason reason,
	476	void *ari,
	477	u8 ari_length,
	478	const void *private_data,
	479	u8 private_data_len);
	480
de98b693 SH	481	#define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */
de98b693 SH	482
c3e01647 HR	483	/**
	484	* ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
	485	* message.
	486	* @cm_id: Connection identifier associated with the connection message.
de98b693	487	* @service_timeout: The lower 5-bits specify the maximum time required for
fd589a8f	488	* the sender to reply to the connection message. The upper 3-bits
de98b693	489	* specify additional control flags.
c3e01647 HR	490	* @private_data: Optional user-defined private data sent with the
	491	* message receipt acknowledgement.
	492	* @private_data_len: Size of the private data buffer, in bytes.
	493	*/
	494	int ib_send_cm_mra(struct ib_cm_id *cm_id,
	495	u8 service_timeout,
	496	const void *private_data,
	497	u8 private_data_len);
	498
	499	/**
	500	* ib_send_cm_lap - Sends a load alternate path request.
	501	* @cm_id: Connection identifier associated with the load alternate path
	502	* message.
	503	* @alternate_path: A path record that identifies the alternate path to
	504	* load.
	505	* @private_data: Optional user-defined private data sent with the
	506	* load alternate path message.
	507	* @private_data_len: Size of the private data buffer, in bytes.
	508	*/
	509	int ib_send_cm_lap(struct ib_cm_id *cm_id,
	510	struct ib_sa_path_rec *alternate_path,
	511	const void *private_data,
	512	u8 private_data_len);
	513
	514	/**
	515	* ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning
	516	* to a specified QP state.
	517	* @cm_id: Communication identifier associated with the QP attributes to
	518	* initialize.
	519	* @qp_attr: On input, specifies the desired QP state. On output, the
	520	* mandatory and desired optional attributes will be set in order to
	521	* modify the QP to the specified state.
	522	* @qp_attr_mask: The QP attribute mask that may be used to transition the
	523	* QP to the specified state.
	524	*
	525	* Users must set the @qp_attr->qp_state to the desired QP state. This call
	526	* will set all required attributes for the given transition, along with
	527	* known optional attributes. Users may override the attributes returned from
	528	* this call before calling ib_modify_qp.
	529	*/
	530	int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
	531	struct ib_qp_attr *qp_attr,
	532	int *qp_attr_mask);
	533
	534	/**
	535	* ib_send_cm_apr - Sends an alternate path response message in response to
	536	* a load alternate path request.
	537	* @cm_id: Connection identifier associated with the alternate path response.
	538	* @status: Reply status sent with the alternate path response.
	539	* @info: Optional additional information sent with the alternate path
	540	* response.
	541	* @info_length: Size of the additional information, in bytes.
	542	* @private_data: Optional user-defined private data sent with the
	543	* alternate path response message.
	544	* @private_data_len: Size of the private data buffer, in bytes.
	545	*/
	546	int ib_send_cm_apr(struct ib_cm_id *cm_id,
	547	enum ib_cm_apr_status status,
	548	void *info,
	549	u8 info_length,
	550	const void *private_data,
	551	u8 private_data_len);
	552
	553	struct ib_cm_sidr_req_param {
554	struct ib_sa_path_rec *path;
97f52eb4	555	__be64 service_id;
c3e01647 HR	556	int timeout_ms;
	557	const void *private_data;
	558	u8 private_data_len;
	559	u8 max_cm_retries;
c3e01647 HR	560	};
	561
	562	/**
	563	* ib_send_cm_sidr_req - Sends a service ID resolution request to the
	564	* remote node.
	565	* @cm_id: Communication identifier that will be associated with the
	566	* service ID resolution request.
	567	* @param: Service ID resolution request information.
	568	*/
	569	int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
	570	struct ib_cm_sidr_req_param *param);
	571
	572	struct ib_cm_sidr_rep_param {
	573	u32 qp_num;
	574	u32 qkey;
	575	enum ib_cm_sidr_status status;
	576	const void *info;
	577	u8 info_length;
	578	const void *private_data;
	579	u8 private_data_len;
	580	};
	581
	582	/**
75af9088	583	* ib_send_cm_sidr_rep - Sends a service ID resolution reply to the
c3e01647 HR	584	* remote node.
	585	* @cm_id: Communication identifier associated with the received service ID
	586	* resolution request.
	587	* @param: Service ID resolution reply information.
	588	*/
	589	int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
	590	struct ib_cm_sidr_rep_param *param);
	591
	592	#endif /* IB_CM_H */