/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB *//* * Copyright (c) 2005 Network Appliance, Inc. All rights reserved. * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. */ #ifndef IW_CM_H#define IW_CM_H #include <linux/in.h>#include <rdma/ib_cm.h> struct iw_cm_id; 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,	 /* passive side accept successful */	IW_CM_EVENT_DISCONNECT,		 /* orderly shutdown */	IW_CM_EVENT_CLOSE		 /* close complete */}; struct iw_cm_event {	enum iw_cm_event_type event;	int			 status;	struct sockaddr_storage local_addr;	struct sockaddr_storage remote_addr;	void *private_data;	void *provider_data;	u8 private_data_len;	u8 ord;	u8 ird;}; /** * typedef iw_cm_handler - Function to be called by the IW CM when delivering * events to the client. * * @cm_id: The IW CM identifier associated with the event. * @event: Pointer to the event structure. */typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,			     struct iw_cm_event *event); /** * typedef iw_event_handler - Function called by the provider when delivering * provider events to the IW CM.  Returns either 0 indicating the event was * processed or -errno if the event could not be processed. * * @cm_id: The IW CM identifier associated with the event. * @event: Pointer to the event structure. */typedef int (*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;	 /* client cb context */	struct ib_device	*device;	struct sockaddr_storage local_addr;      /* local addr */	struct sockaddr_storage	remote_addr;	struct sockaddr_storage m_local_addr;	 /* nmapped local addr */	struct sockaddr_storage	m_remote_addr;	 /* nmapped rem addr */	void			*provider_data;	 /* provider private data */	iw_event_handler        event_handler;   /* cb for provider						    events */	/* Used by provider to add and remove refs on IW cm_id */	void (*add_ref)(struct iw_cm_id *);	void (*rem_ref)(struct iw_cm_id *);	u8  tos;	bool tos_set:1;	bool mapped:1;	bool afonly:1;}; struct iw_cm_conn_param {	const void *private_data;	u16 private_data_len;	u32 ord;	u32 ird;	u32 qpn;}; enum iw_flags { 	/*	 * This flag allows the iwcm and iwpmd to still advertise	 * mappings but the real and mapped port numbers are the	 * same.  Further, iwpmd will not bind any user socket to	 * reserve the port.  This is required for soft iwarp	 * to play in the port mapped iwarp space.	 */	IW_F_NO_PORT_MAP = (1 << 0),}; /** * iw_create_cm_id - Create an IW CM identifier. * * @device: The IB device on which to create the IW CM identier. * @cm_handler: User callback invoked to report events associated with the *   returned IW CM identifier. * @context: User specified context associated with the id. */struct iw_cm_id *iw_create_cm_id(struct ib_device *device,				 iw_cm_handler cm_handler, void *context); /** * iw_destroy_cm_id - Destroy an IW CM identifier. * * @cm_id: The previously created IW CM identifier to destroy. * * The client can assume that no events will be delivered for the CM ID after * this function returns. */void iw_destroy_cm_id(struct iw_cm_id *cm_id); /** * iw_cm_listen - Listen for incoming connection requests on the * specified IW CM id. * * @cm_id: The IW CM identifier. * @backlog: The maximum number of outstanding un-accepted inbound listen *   requests to queue. * * The source address and port number are specified in the IW CM identifier * structure. */int iw_cm_listen(struct iw_cm_id *cm_id, int backlog); /** * iw_cm_accept - Called to accept an incoming connect request. * * @cm_id: The IW CM identifier associated with the connection request. * @iw_param: Pointer to a structure containing connection establishment *   parameters. * * The specified cm_id will have been provided in the event data for a * CONNECT_REQUEST event. Subsequent events related to this connection will be * delivered to the specified IW CM identifier prior and may occur prior to * the return of this function. If this function returns a non-zero value, the * client can assume that no events will be delivered to the specified IW CM * identifier. */int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param); /** * iw_cm_reject - Reject an incoming connection request. * * @cm_id: Connection identifier associated with the request. * @private_data: Pointer to data to deliver to the remote peer as part of the *   reject message. * @private_data_len: The number of bytes in the private_data parameter. * * The client can assume that no events will be delivered to the specified IW * CM identifier following the return of this function. The private_data * buffer is available for reuse when this function returns. */int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,		 u8 private_data_len); /** * iw_cm_connect - Called to request a connection to a remote peer. * * @cm_id: The IW CM identifier for the connection. * @iw_param: Pointer to a structure containing connection  establishment *   parameters. * * Events may be delivered to the specified IW CM identifier prior to the * return of this function. If this function returns a non-zero value, the * client can assume that no events will be delivered to the specified IW CM * identifier. */int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param); /** * iw_cm_disconnect - Close the specified connection. * * @cm_id: The IW CM identifier to close. * @abrupt: If 0, the connection will be closed gracefully, otherwise, the *   connection will be reset. * * The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is * delivered. */int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt); /** * iw_cm_init_qp_attr - Called to initialize the attributes of the QP * associated with a IW CM identifier. * * @cm_id: The IW CM identifier associated with the QP * @qp_attr: Pointer to the QP attributes structure. * @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are *   valid. */int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,		       int *qp_attr_mask); /** * iwcm_reject_msg - return a pointer to a reject message string. * @reason: Value returned in the REJECT event status field. */const char *__attribute_const__ iwcm_reject_msg(int reason); #endif /* IW_CM_H */