--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/lib/udapl/udapl_tavor/include/dapl.h	Thu Apr 30 13:42:05 2009 -0700
@@ -0,0 +1,1175 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
+ */
+
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ *
+ * HEADER: dapl.h
+ *
+ * PURPOSE: defines common data structures for the DAPL reference implemenation
+ *
+ * Description: This file describes the working data structures used within
+ *              DAPL RI.
+ *
+ */
+
+#ifndef _DAPL_H_
+#define	_DAPL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+#include <sys/byteorder.h>
+
+#include <dat/udat.h>
+#include <dat/dat_registry.h>
+#include "dapl_osd.h"
+#include "dapl_debug.h"
+#include "dapl_tavor_ibtf.h"
+
+
+/*
+ * The HTOBE_xx() macro converts data from host order to big endian
+ * order and hence uses the BE_xx macros to do the byte swapping.
+ *
+ * The BETOH_xx() macro converts data from big endian order to host
+ * order. This is used when data is read from CQs or QPs. Due to the
+ * self-inversing nature of byte swapping routines BE_xx macros have
+ * the effect of converting big endian to host byte order which can
+ * be big endian or little endian.
+ * eg.	On i386 BE_64(val64_be) = val64_le
+ *	On sparc BE_64(val64_be) = val64_be.
+ *
+ * Tavor is a big endian device, all the buffer manipulation for
+ * QPs, CQs and the doorbell page needs to be aware of this.
+ *
+ */
+#if defined(__amd64) || defined(__i386)
+/* use inline code to get performance of bswap* instructions */
+
+#if !defined(__lint) && defined(__GNUC__)
+/* use GNU inline */
+	/* works for both i386 and amd64 */
+	extern __inline__ uint32_t dapls_byteswap32(uint32_t value)
+	{
+		__asm__("bswap %0" : "+r" (value));
+		return (value);
+	}
+
+#if defined(__amd64)
+
+	extern __inline__ uint64_t dapls_byteswap64(uint64_t value)
+	{
+		__asm__("bswapq %0" : "+r" (value));
+		return (value);
+	}
+
+#else /* defined(__i386) */
+
+	extern __inline__ uint64_t dapls_byteswap64(uint64_t value)
+	{
+		union {
+			struct { uint32_t a, b; } s;
+			uint64_t u;
+		} v;
+		v.u = value;
+		__asm__("bswap %0 ; bswap %1 ; xchgl %0,%1"
+		    : "=r" (v.s.a), "=r" (v.s.b)
+		    : "0" (v.s.a), "1" (v.s.b));
+		return (v.u);
+	}
+#endif
+
+#else	/* !defined(__lint) && defined(__GNUC__) */
+/* use SUN inline with .il files */
+uint64_t dapls_byteswap64(uint64_t);
+uint32_t dapls_byteswap32(uint32_t);
+
+#endif	/* !defined(__lint) && defined(__GNUC__) */
+
+#define	HTOBE_64(x)	dapls_byteswap64(x)
+#define	HTOBE_32(x)	dapls_byteswap32(x)
+#define	BETOH_64(x)	dapls_byteswap64(x)
+#define	BETOH_32(x)	dapls_byteswap32(x)
+
+#else	/* defined(__amd64) || defined(__i386) */
+
+/* These are identity (do nothing) on big-endian machines. */
+
+#define	HTOBE_64(x)	BE_64((x))
+#define	HTOBE_32(x)	BE_32((x))
+#define	BETOH_64(x)	BE_64((x))
+#define	BETOH_32(x)	BE_32((x))
+
+#endif	/* defined(__amd64) || defined(__i386) */
+
+/*
+ *
+ * Enumerations
+ *
+ */
+
+typedef enum dapl_magic {
+	/* magic number values for verification & debug */
+	DAPL_MAGIC_IA = 0x1afeF00d,
+	DAPL_MAGIC_EVD = 0x2eedFace,
+	DAPL_MAGIC_EP = 0x3eadBabe,
+	DAPL_MAGIC_LMR = 0x4eefCafe,
+	DAPL_MAGIC_RMR = 0x5BadCafe,
+	DAPL_MAGIC_PZ = 0x6eafBeef,
+	DAPL_MAGIC_PSP = 0x7eadeD0c,
+	DAPL_MAGIC_RSP = 0x1ab4Feed,
+	DAPL_MAGIC_CR = 0x2e12Cee1,
+	DAPL_MAGIC_CR_DESTROYED = 0x312bDead,
+	DAPL_MAGIC_CNO = 0x4eadF00d,
+	DAPL_MAGIC_EP_EXIT = 0x5abeDead,
+	DAPL_MAGIC_SRQ = 0x5eedFace,
+	DAPL_MAGIC_INVALID = 0x6FFFFFFF
+} DAPL_MAGIC;
+
+typedef enum dapl_evd_state {
+	DAPL_EVD_STATE_TERMINAL,
+	DAPL_EVD_STATE_INITIAL,
+	DAPL_EVD_STATE_OPEN,
+	DAPL_EVD_STATE_WAITED,
+	DAPL_EVD_STATE_DEAD = 0xDEAD
+} DAPL_EVD_STATE;
+
+typedef enum dapl_evd_completion {
+	DAPL_EVD_STATE_INIT,
+	DAPL_EVD_STATE_SOLICITED_WAIT,
+	DAPL_EVD_STATE_THRESHOLD,
+	DAPL_EVD_STATE_UNSIGNALLED
+} DAPL_EVD_COMPLETION;
+
+typedef enum dapl_cno_state {
+	DAPL_CNO_STATE_UNTRIGGERED,
+	DAPL_CNO_STATE_TRIGGERED,
+	DAPL_CNO_STATE_DEAD = 0x7eadFeed
+} DAPL_CNO_STATE;
+
+typedef enum dapl_qp_state {
+	DAPL_QP_STATE_UNCONNECTED,
+	DAPL_QP_STATE_RESERVED,
+	DAPL_QP_STATE_PASSIVE_CONNECTION_PENDING,
+	DAPL_QP_STATE_ACTIVE_CONNECTION_PENDING,
+	DAPL_QP_STATE_TENTATIVE_CONNECTION_PENDING,
+	DAPL_QP_STATE_CONNECTED,
+	DAPL_QP_STATE_DISCONNECT_PENDING,
+	DAPL_QP_STATE_ERROR,
+	DAPL_QP_STATE_NOT_REUSABLE,
+	DAPL_QP_STATE_FREE
+} DAPL_QP_STATE;
+
+
+/*
+ *
+ * Constants
+ *
+ */
+
+/*
+ * number of HCAs allowed
+ */
+#define	DAPL_MAX_HCA_COUNT		4
+
+/*
+ * Configures the RMR bind evd restriction
+ */
+#define	DAPL_RMR_BIND_EVD_RESTRICTION	DAT_RMR_EVD_SAME_AS_REQUEST_EVD
+
+/*
+ * special qp_state indicating the EP does not have a QP attached yet
+ */
+#define	DAPL_QP_STATE_UNATTACHED	0xFFF0
+
+/*
+ *
+ * Macros
+ *
+ */
+
+/*
+ * Simple macro to verify a handle is bad.
+ * - pointer's magic number is wrong
+ * - both pointer is NULL and not word aligned checked by the registry
+ */
+#define	DAPL_BAD_HANDLE(h, magicNum) (				\
+	    (((DAPL_HEADER *)(h))->magic != (magicNum)))
+
+#define	DAPL_MIN(a, b)		(((a) < (b)) ? (a) : (b))
+#define	DAPL_MAX(a, b)		(((a) > (b)) ? (a) : (b))
+
+#define	DAT_ERROR(Type, SubType) \
+	((DAT_RETURN)(DAT_CLASS_ERROR | (Type) | (SubType)))
+
+/*
+ *
+ * Typedefs
+ *
+ */
+
+typedef	struct dapl_llist_entry DAPL_LLIST_ENTRY;
+typedef	DAPL_LLIST_ENTRY *DAPL_LLIST_HEAD;
+typedef	struct dapl_ring_buffer DAPL_RING_BUFFER;
+typedef	struct dapl_cookie_buffer DAPL_COOKIE_BUFFER;
+
+typedef	struct dapl_hash_table DAPL_HASH_TABLE;
+typedef	struct dapl_hash_table *DAPL_HASH_TABLEP;
+typedef	DAT_UINT64 DAPL_HASH_KEY;
+typedef	void *DAPL_HASH_DATA;
+
+typedef	struct dapl_hca DAPL_HCA;
+
+typedef	struct dapl_header DAPL_HEADER;
+
+typedef	struct dapl_ia DAPL_IA;
+typedef	struct dapl_cno DAPL_CNO;
+typedef	struct dapl_evd DAPL_EVD;
+typedef	struct dapl_ep DAPL_EP;
+typedef	struct dapl_pz DAPL_PZ;
+typedef	struct dapl_lmr DAPL_LMR;
+typedef	struct dapl_rmr DAPL_RMR;
+typedef	struct dapl_sp DAPL_SP;
+typedef	struct dapl_cr DAPL_CR;
+typedef struct dapl_srq DAPL_SRQ;
+
+typedef	struct dapl_cookie DAPL_COOKIE;
+typedef	struct dapl_dto_cookie DAPL_DTO_COOKIE;
+typedef	struct dapl_rmr_cookie DAPL_RMR_COOKIE;
+
+typedef	void (*DAPL_CONNECTION_STATE_HANDLER)(IN DAPL_EP *,
+	IN ib_cm_events_t,
+	IN const void *,
+	OUT DAT_EVENT *);
+
+
+/*
+ *
+ * Structures
+ *
+ */
+
+struct dapl_llist_entry {
+	struct dapl_llist_entry *flink;
+	struct dapl_llist_entry *blink;
+	void *data;
+	DAPL_LLIST_HEAD *list_head;	/* for consistency checking */
+};
+
+struct dapl_ring_buffer {
+	void **base;		/* base of element array */
+	DAT_COUNT lim;		/* mask, number of entries - 1 */
+	DAPL_ATOMIC head;	/* head pointer index */
+	DAPL_ATOMIC tail;	/* tail pointer index */
+	DAPL_OS_LOCK lock;	/* lock */
+};
+
+struct dapl_cookie_buffer {
+	DAPL_COOKIE *pool;
+	DAT_COUNT pool_size;
+	DAPL_ATOMIC head;
+	DAPL_ATOMIC tail;
+};
+
+typedef DAT_RETURN (*DAPL_POST_SEND)(DAPL_EP *, ibt_send_wr_t *, boolean_t);
+typedef DAT_RETURN (*DAPL_POST_RECV)(DAPL_EP *, ibt_recv_wr_t *, boolean_t);
+typedef DAT_RETURN (*DAPL_POST_SRQ)(DAPL_SRQ *, ibt_recv_wr_t *, boolean_t);
+typedef void (*DAPL_CQ_PEEK)(ib_cq_handle_t, int *);
+typedef DAT_RETURN
+	(*DAPL_CQ_POLL)(ib_cq_handle_t, ibt_wc_t *, uint_t, uint_t *);
+typedef DAT_RETURN (*DAPL_CQ_POLL_ONE)(ib_cq_handle_t, ibt_wc_t *);
+typedef DAT_RETURN (*DAPL_CQ_NOTIFY)(ib_cq_handle_t, int, uint32_t);
+typedef void (*DAPL_SRQ_FLUSH)(ib_qp_handle_t);
+typedef void (*DAPL_QP_INIT)(ib_qp_handle_t);
+typedef void (*DAPL_CQ_INIT)(ib_cq_handle_t);
+typedef void (*DAPL_SRQ_INIT)(ib_srq_handle_t);
+
+struct dapl_hca {
+	DAPL_OS_LOCK lock;
+	DAPL_LLIST_HEAD ia_list_head;
+	DAPL_EVD *async_evd;
+	DAPL_EVD *async_error_evd;
+	DAT_SOCK_ADDR6 hca_address;	/* local address of HCA */
+	/* Values specific to IB OS API */
+	IB_HCA_NAME name;
+	ib_hca_handle_t ib_hca_handle;
+	DAPL_ATOMIC handle_ref_count;	/* count of ia_opens on handle */
+	ib_uint32_t port_num;	/* number of physical port */
+	ib_uint32_t partition_max;
+	ib_uint32_t partition_key;
+	ib_uint32_t tavor_idx;
+	ib_uint32_t hca_ibd_inst;
+	ib_guid_t node_GUID;
+	ib_lid_t lid;
+	int max_inline_send;
+	/* CQ support thread */
+	ib_cqd_handle_t ib_cqd_handle;		/* cq domain handle */
+	ib_cq_handle_t null_ib_cq_handle;	/* CQ handle with 0 entries */
+	/* Memory Subsystem Support */
+	DAPL_HASH_TABLE *lmr_hash_table;
+	/* Limits & useful HCA attributes */
+	DAT_IA_ATTR ia_attr;
+	struct dapl_hca *hca_next;
+	DAPL_POST_SEND post_send;
+	DAPL_POST_RECV post_recv;
+	DAPL_POST_SRQ post_srq;
+	DAPL_CQ_PEEK cq_peek;
+	DAPL_CQ_POLL cq_poll;
+	DAPL_CQ_POLL_ONE cq_poll_one;
+	DAPL_CQ_NOTIFY cq_notify;
+	DAPL_SRQ_FLUSH srq_flush;
+	DAPL_QP_INIT qp_init;
+	DAPL_CQ_INIT cq_init;
+	DAPL_SRQ_INIT srq_init;
+	int hermon_resize_cq;
+};
+
+#define	DAPL_SEND(x)	(x->header.owner_ia->hca_ptr->post_send)
+#define	DAPL_RECV(x)	(x->header.owner_ia->hca_ptr->post_recv)
+#define	DAPL_SRECV(x)	(x->header.owner_ia->hca_ptr->post_srq)
+#define	DAPL_PEEK(x)	(x->header.owner_ia->hca_ptr->cq_peek)
+#define	DAPL_POLL(x)	(x->header.owner_ia->hca_ptr->cq_poll)
+#define	DAPL_POLL1(x)	(x->header.owner_ia->hca_ptr->cq_poll_one)
+#define	DAPL_NOTIFY(x)	(x->header.owner_ia->hca_ptr->cq_notify)
+#define	DAPL_FLUSH(x)	(x->header.owner_ia->hca_ptr->srq_flush)
+#define	DAPL_INIT_QP(x)	(x->hca_ptr->qp_init)
+#define	DAPL_INIT_CQ(x)	(x->hca_ptr->cq_init)
+#define	DAPL_INIT_SRQ(x) (x->hca_ptr->srq_init)
+
+extern void dapls_init_funcs_tavor(DAPL_HCA *);
+extern void dapls_init_funcs_arbel(DAPL_HCA *);
+extern void dapls_init_funcs_hermon(DAPL_HCA *);
+
+/* DAPL Objects always have the following header */
+struct dapl_header {
+	DAT_PROVIDER *provider;		/* required by DAT - must be first */
+	DAPL_MAGIC magic;		/* magic number for verification */
+	DAT_HANDLE_TYPE handle_type;	/* struct type */
+	DAPL_IA *owner_ia;		/* ia which owns this struct */
+	DAPL_LLIST_ENTRY ia_list_entry;	/* link entry on ia struct */
+	DAT_CONTEXT user_context;	/* user context - opaque to DAPL */
+	DAPL_OS_LOCK lock;		/* lock - in header for easier macros */
+};
+
+enum DAPL_IA_FLAGS {
+	DAPL_DISABLE_RO	= 1		/* Disable relaxed ordering */
+};
+
+/* DAPL_IA maps to DAT_IA_HANDLE */
+struct dapl_ia {
+	DAPL_HEADER header;
+	DAPL_HCA *hca_ptr;
+	DAPL_EVD *async_error_evd;
+	DAT_BOOLEAN cleanup_async_error_evd;
+
+	DAPL_LLIST_ENTRY hca_ia_list_entry;	/* HCAs list of IAs */
+	DAPL_LLIST_HEAD ep_list_head;		/* EP queue */
+	DAPL_LLIST_HEAD lmr_list_head;		/* LMR queue */
+	DAPL_LLIST_HEAD rmr_list_head;		/* RMR queue */
+	DAPL_LLIST_HEAD pz_list_head;		/* PZ queue */
+	DAPL_LLIST_HEAD evd_list_head;		/* EVD queue */
+	DAPL_LLIST_HEAD cno_list_head;		/* CNO queue */
+	DAPL_LLIST_HEAD psp_list_head;		/* PSP queue */
+	DAPL_LLIST_HEAD rsp_list_head;		/* RSP queue */
+	DAPL_LLIST_HEAD srq_list_head;		/* SRQ queue */
+
+	enum DAPL_IA_FLAGS dapl_flags;		/* state flags, see above */
+};
+
+/* DAPL_CNO maps to DAT_CNO_HANDLE */
+struct dapl_cno {
+	DAPL_HEADER header;
+
+	/* A CNO cannot be freed while it is referenced elsewhere.  */
+	DAPL_ATOMIC cno_ref_count;
+	DAPL_CNO_STATE cno_state;
+
+	DAT_COUNT cno_waiters;
+	DAPL_EVD *cno_evd_triggered;
+	DAT_OS_WAIT_PROXY_AGENT cno_wait_agent;
+
+	DAPL_OS_WAIT_OBJECT cno_wait_object;
+	DAPL_LLIST_HEAD evd_list_head;
+	ib_cno_handle_t ib_cno_handle;
+};
+
+/* DAPL_EVD maps to DAT_EVD_HANDLE */
+struct dapl_evd {
+	DAPL_HEADER header;
+
+	DAPL_EVD_STATE evd_state;
+	DAT_EVD_FLAGS evd_flags;
+	DAT_BOOLEAN evd_enabled;	/* For attached CNO.  */
+	DAT_BOOLEAN evd_waitable;	/* EVD state.  */
+
+	/* Derived from evd_flags; see dapls_evd_internal_create.  */
+	DAT_BOOLEAN evd_producer_locking_needed;
+
+	/* Every EVD has a CQ unless it is a SOFTWARE_EVENT only EVD */
+	ib_cq_handle_t ib_cq_handle;
+
+	/*
+	 * Mellanox Specific completion handle for
+	 * registration/de-registration
+	 */
+	ib_comp_handle_t ib_comp_handle;
+
+	/*
+	 * An Event Dispatcher cannot be freed while
+	 * it is referenced elsewhere.
+	 */
+	DAPL_ATOMIC evd_ref_count;
+
+	/* Set if there has been a catastrophic overflow */
+	DAT_BOOLEAN catastrophic_overflow;
+
+	/* the actual events */
+	DAT_COUNT qlen;
+	DAT_EVENT *events;
+	DAPL_RING_BUFFER free_event_queue;
+	DAPL_RING_BUFFER pending_event_queue;
+
+	/*
+	 * CQ Completions are not placed into 'deferred_events'
+	 * rather they are simply left on the Completion Queue
+	 * and the fact that there was a notification is flagged.
+	 */
+	DAT_BOOLEAN cq_notified;
+	DAPL_OS_TICKS cq_notified_when;
+
+	DAT_COUNT cno_active_count;
+	DAPL_CNO *cno_ptr;
+
+	DAPL_OS_WAIT_OBJECT wait_object;
+	DAT_COUNT threshold;
+	DAPL_LLIST_ENTRY cno_list_entry;
+	DAPL_EVD_COMPLETION	completion_type;
+};
+
+/* DAPL_EP maps to DAT_EP_HANDLE */
+struct dapl_ep {
+	DAPL_HEADER header;
+	/* What the DAT Consumer asked for */
+	DAT_EP_PARAM param;
+
+	/* The RC Queue Pair (IBM OS API) */
+	ib_qp_handle_t qp_handle;
+	unsigned int qpn;		/* qp number */
+	ib_qp_state_t qp_state;
+
+	/* communications manager handle (IBM OS API) */
+	ib_cm_handle_t cm_handle;
+	/*
+	 * store the remote IA address here, reference from the param
+	 * struct which only has a pointer, no storage
+	 */
+	DAT_SOCK_ADDR6 remote_ia_address;
+
+	/* For passive connections we maintain a back pointer to the CR */
+	void *cr_ptr;
+
+	/* private data container */
+	unsigned char private_data[DAPL_MAX_PRIVATE_DATA_SIZE];
+
+	/* DTO data */
+	DAPL_ATOMIC req_count;
+	DAPL_ATOMIC recv_count;
+
+	DAPL_COOKIE_BUFFER req_buffer;
+	DAPL_COOKIE_BUFFER recv_buffer;
+
+	DAT_BOOLEAN		srq_attached;
+};
+
+/* DAPL_PZ maps to DAT_PZ_HANDLE */
+struct dapl_pz {
+	DAPL_HEADER header;
+	ib_pd_handle_t pd_handle;
+	DAPL_ATOMIC pz_ref_count;
+};
+
+/* DAPL_LMR maps to DAT_LMR_HANDLE */
+struct dapl_lmr {
+	DAPL_HEADER header;
+	DAT_LMR_PARAM param;
+	ib_mr_handle_t mr_handle;
+	DAPL_ATOMIC lmr_ref_count;
+};
+
+/* DAPL_RMR maps to DAT_RMR_HANDLE */
+struct dapl_rmr {
+	DAPL_HEADER header;
+	DAT_RMR_PARAM param;
+	DAPL_EP *ep;
+	DAPL_PZ *pz;
+	DAPL_LMR *lmr;
+	ib_mw_handle_t mw_handle;
+};
+
+/* SP types, indicating the state and queue */
+typedef enum dapl_sp_state {
+	DAPL_SP_STATE_FREE,
+	DAPL_SP_STATE_PSP_LISTENING,
+	DAPL_SP_STATE_PSP_PENDING,
+	DAPL_SP_STATE_RSP_LISTENING,
+	DAPL_SP_STATE_RSP_PENDING
+} DAPL_SP_STATE;
+
+/* DAPL_SP maps to DAT_PSP_HANDLE and DAT_RSP_HANDLE */
+struct dapl_sp {
+	DAPL_HEADER header;
+	DAPL_SP_STATE state;	/* type and queue of the SP */
+
+	/* PSP/RSP PARAM fields */
+	DAT_IA_HANDLE ia_handle;
+	DAT_CONN_QUAL conn_qual;
+	DAT_EVD_HANDLE evd_handle;
+	DAT_PSP_FLAGS psp_flags;
+	DAT_EP_HANDLE ep_handle;
+
+	/* maintenence fields */
+	DAT_BOOLEAN listening;		/* PSP is registered & active */
+	ib_cm_srvc_handle_t cm_srvc_handle;	/* Used by Mellanox CM */
+	DAPL_LLIST_HEAD cr_list_head;	/* CR pending queue */
+	DAT_COUNT cr_list_count;	/* count of CRs on queue */
+};
+
+/* DAPL_CR maps to DAT_CR_HANDLE */
+struct dapl_cr {
+	DAPL_HEADER header;
+
+	/*
+	 * for convenience the data is kept as a DAT_CR_PARAM.
+	 * however, the "local_endpoint" field is always NULL
+	 * so this wastes a pointer. This is probably ok to
+	 * simplify code, espedially dat_cr_query.
+	 */
+	DAT_CR_PARAM param;
+	/* IB specific fields */
+	ib_cm_handle_t ib_cm_handle;
+
+	DAT_SOCK_ADDR6 remote_ia_address;
+	/*
+	 * Assuming that the maximum private data size is small.
+	 * If it gets large, use of a pointer may be appropriate.
+	 */
+	unsigned char private_data[DAPL_MAX_PRIVATE_DATA_SIZE];
+	/*
+	 * Need to be able to associate the CR back to the PSP for
+	 * dapl_cr_reject.
+	 */
+	DAPL_SP *sp_ptr;
+};
+
+/* DAPL_SRQ maps to DAT_SRQ_HANDLE */
+struct dapl_srq {
+	DAPL_HEADER		header;
+	DAT_SRQ_PARAM		param;
+	/* SRQ cannot be freed till EPs attached to srq are freed */
+	DAPL_ATOMIC		srq_ref_count;
+	ib_srq_handle_t		srq_handle;
+	/* DTO data */
+	DAPL_ATOMIC		recv_count;
+	DAPL_COOKIE_BUFFER	recv_buffer;
+};
+
+typedef enum dapl_dto_type {
+	DAPL_DTO_TYPE_SEND,
+	DAPL_DTO_TYPE_RECV,
+	DAPL_DTO_TYPE_RDMA_WRITE,
+	DAPL_DTO_TYPE_RDMA_READ
+} DAPL_DTO_TYPE;
+
+typedef enum dapl_cookie_type {
+	DAPL_COOKIE_TYPE_NULL,
+	DAPL_COOKIE_TYPE_DTO,
+	DAPL_COOKIE_TYPE_RMR
+} DAPL_COOKIE_TYPE;
+
+/* DAPL_DTO_COOKIE used as context for DTO WQEs */
+struct dapl_dto_cookie {
+	DAPL_DTO_TYPE type;
+	DAT_DTO_COOKIE cookie;
+	DAT_COUNT size;		/* used for SEND and RDMA write */
+};
+
+/* DAPL_RMR_COOKIE used as context for bind WQEs */
+struct dapl_rmr_cookie {
+	DAPL_RMR *rmr;
+	DAT_RMR_COOKIE cookie;
+};
+
+typedef enum dapl_cookie_queue_type {
+	DAPL_COOKIE_QUEUE_EP,
+	DAPL_COOKIE_QUEUE_SRQ
+} DAPL_COOKIE_QUEUE_TYPE;
+
+/* DAPL_COOKIE used as context for WQEs */
+struct dapl_cookie {
+	DAPL_COOKIE_TYPE type;	/* Must be first, to define struct.  */
+	DAPL_COOKIE_QUEUE_TYPE	 queue_type;
+	union {
+		void		*ptr;
+		DAPL_EP		*ep;
+		DAPL_SRQ	*srq;
+	} queue;
+	DAT_COUNT index;
+	union {
+		DAPL_DTO_COOKIE dto;
+		DAPL_RMR_COOKIE rmr;
+	} val;
+};
+
+/*
+ * Generic HCA name field
+ */
+#define	DAPL_HCA_NAME_MAX_LEN 260
+typedef char DAPL_HCA_NAME[DAPL_HCA_NAME_MAX_LEN + 1];
+
+#if defined(IBHOSTS_NAMING)
+
+/*
+ * Simple mapping table to match IP addresses to GIDs. Loaded
+ * by dapl_init.
+ */
+typedef struct _dapl_gid_map_table {
+	uint32_t ip_address;
+	ib_gid_t gid;
+} DAPL_GID_MAP;
+
+#endif /* IBHOSTS_NAMING */
+
+/*
+ *
+ * Function Prototypes
+ *
+ */
+
+/*
+ * DAT Mandated functions
+ */
+extern DAT_RETURN
+dapl_ia_open(
+	IN const DAT_NAME_PTR,	/* name */
+	IN DAT_COUNT,		/* asynch_evd_qlen */
+	INOUT DAT_EVD_HANDLE *,	/* asynch_evd_handle */
+	OUT DAT_IA_HANDLE *,	/* ia_handle */
+	IN	boolean_t);	/* ro_aware_client */
+
+extern DAT_RETURN
+dapl_ia_close(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	IN DAT_CLOSE_FLAGS);	/* ia_flags */
+
+
+extern DAT_RETURN
+dapl_ia_query(
+	IN DAT_IA_HANDLE,		/* ia handle */
+	OUT DAT_EVD_HANDLE *,		/* async_evd_handle */
+	IN DAT_IA_ATTR_MASK,		/* ia_params_mask */
+	OUT DAT_IA_ATTR *,		/* ia_params */
+	IN DAT_PROVIDER_ATTR_MASK,	/* provider_params_mask */
+	OUT DAT_PROVIDER_ATTR *);	/* provider_params */
+
+
+/* helper functions */
+extern DAT_RETURN
+dapl_set_consumer_context(
+	IN DAT_HANDLE,		/* dat handle */
+	IN DAT_CONTEXT);	/* context */
+
+extern DAT_RETURN
+dapl_get_consumer_context(
+	IN DAT_HANDLE,		/* dat handle */
+	OUT DAT_CONTEXT *);	/* context */
+
+extern DAT_RETURN
+dapl_get_handle_type(
+	IN DAT_HANDLE,
+	OUT DAT_HANDLE_TYPE *);
+
+
+/* CNO functions */
+extern DAT_RETURN
+dapl_cno_create(
+	IN DAT_IA_HANDLE,		/* ia_handle */
+	IN DAT_OS_WAIT_PROXY_AGENT,	/* agent */
+	OUT DAT_CNO_HANDLE *);		/* cno_handle */
+
+extern DAT_RETURN
+dapl_cno_modify_agent(
+	IN DAT_CNO_HANDLE,		/* cno_handle */
+	IN DAT_OS_WAIT_PROXY_AGENT);	/* agent */
+
+extern DAT_RETURN
+dapl_cno_query(
+	IN DAT_CNO_HANDLE,	/* cno_handle */
+	IN DAT_CNO_PARAM_MASK,	/* cno_param_mask */
+	OUT DAT_CNO_PARAM *);	/* cno_param */
+
+extern DAT_RETURN
+dapl_cno_free(IN DAT_CNO_HANDLE);	/* cno_handle */
+
+extern DAT_RETURN
+dapl_cno_wait(
+	IN DAT_CNO_HANDLE,	/* cno_handle */
+	IN DAT_TIMEOUT,		/* timeout */
+	OUT DAT_EVD_HANDLE *);	/* evd_handle */
+
+
+/* CR Functions */
+extern DAT_RETURN
+dapl_cr_query(
+	IN DAT_CR_HANDLE,	/* cr_handle */
+	IN DAT_CR_PARAM_MASK,	/* cr_args_mask */
+	OUT DAT_CR_PARAM *);	/* cwr_args */
+
+extern DAT_RETURN
+dapl_cr_accept(
+	IN DAT_CR_HANDLE,	/* cr_handle */
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_COUNT,		/* private_data_size */
+	IN const DAT_PVOID);	/* private_data */
+
+extern DAT_RETURN
+dapl_cr_reject(IN DAT_CR_HANDLE);
+
+extern DAT_RETURN
+dapl_cr_handoff(
+	IN DAT_CR_HANDLE,	/* cr_handle */
+	IN DAT_CONN_QUAL);	/* handoff */
+
+/* EVD Functions */
+extern DAT_RETURN
+dapl_evd_create(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	IN DAT_COUNT,		/* evd_min_qlen */
+	IN DAT_CNO_HANDLE,	/* cno_handle */
+	IN DAT_EVD_FLAGS,	/* evd_flags */
+	OUT DAT_EVD_HANDLE *);	/* evd_handle */
+
+extern DAT_RETURN
+dapl_evd_query(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_EVD_PARAM_MASK,	/* evd_args_mask */
+	OUT DAT_EVD_PARAM *);	/* evd_args */
+
+#if 0				/* kdapl */
+extern DAT_RETURN
+dapl_evd_modify_upcall(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_UPCALL_POLICY,	/* upcall_policy */
+	IN DAT_UPCALL_OBJECT);	/* upcall */
+#else
+
+extern DAT_RETURN
+dapl_evd_modify_cno(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_CNO_HANDLE);	/* cno_handle */
+
+extern DAT_RETURN
+dapl_evd_enable(IN DAT_EVD_HANDLE);	/* evd_handle */
+
+extern DAT_RETURN
+dapl_evd_disable(IN DAT_EVD_HANDLE);	/* evd_handle */
+
+extern DAT_RETURN
+dapl_evd_wait(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_TIMEOUT,		/* timeout */
+	IN DAT_COUNT,		/* threshold */
+	OUT DAT_EVENT *,	/* event */
+	OUT DAT_COUNT *);	/* nmore */
+#endif
+
+extern DAT_RETURN
+dapl_evd_resize(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_COUNT);		/* evd_qlen */
+
+extern DAT_RETURN
+dapl_evd_wait(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_TIMEOUT,		/* timeout */
+	IN DAT_COUNT,		/* threshold */
+	OUT DAT_EVENT *,	/* event */
+	OUT DAT_COUNT *);	/* nmore */
+
+extern DAT_RETURN
+dapl_evd_post_se(
+	DAT_EVD_HANDLE,		/* evd_handle */
+	const DAT_EVENT *);	/* event */
+
+extern DAT_RETURN
+dapl_evd_dequeue(
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	OUT DAT_EVENT *);	/* event */
+
+extern DAT_RETURN
+dapl_evd_free(IN DAT_EVD_HANDLE);
+
+extern DAT_RETURN
+dapl_evd_set_unwaitable(IN DAT_EVD_HANDLE evd_handle);
+
+extern DAT_RETURN
+dapl_evd_clear_unwaitable(IN DAT_EVD_HANDLE evd_handle);
+
+
+/* EP functions */
+extern DAT_RETURN
+dapl_ep_create(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	IN DAT_PZ_HANDLE,	/* pz_handle */
+	IN DAT_EVD_HANDLE,	/* in_dto_completion_evd_handle */
+	IN DAT_EVD_HANDLE,	/* out_dto_completion_evd_handle */
+	IN DAT_EVD_HANDLE,	/* connect_evd_handle */
+	IN const DAT_EP_ATTR *,	/* ep_parameters */
+	OUT DAT_EP_HANDLE *);	/* ep_handle */
+
+extern DAT_RETURN
+dapl_ep_query(
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_EP_PARAM_MASK,	/* ep_args_mask */
+	OUT DAT_EP_PARAM *);	/* ep_args */
+
+extern DAT_RETURN
+dapl_ep_modify(
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_EP_PARAM_MASK,		/* ep_args_mask */
+	IN const DAT_EP_PARAM *);	/* ep_args */
+
+extern DAT_RETURN
+dapl_ep_connect(
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_IA_ADDRESS_PTR,	/* remote_ia_address */
+	IN DAT_CONN_QUAL,	/* remote_conn_qual */
+	IN DAT_TIMEOUT,		/* timeout */
+	IN DAT_COUNT,		/* private_data_size */
+	IN const DAT_PVOID,	/* private_data  */
+	IN DAT_QOS,		/* quality_of_service */
+	IN DAT_CONNECT_FLAGS);	/* connect_flags */
+
+extern DAT_RETURN
+dapl_ep_dup_connect(
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_EP_HANDLE,	/* ep_dup_handle */
+	IN DAT_TIMEOUT,		/* timeout */
+	IN DAT_COUNT,		/* private_data_size */
+	IN const DAT_PVOID,	/* private_data */
+	IN DAT_QOS);		/* quality_of_service */
+
+extern DAT_RETURN
+dapl_ep_disconnect(
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_CLOSE_FLAGS);	/* completion_flags */
+
+extern DAT_RETURN
+dapl_ep_post_send(
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_COUNT,			/* num_segments */
+	IN DAT_LMR_TRIPLET *,		/* local_iov */
+	IN DAT_DTO_COOKIE,		/* user_cookie */
+	IN DAT_COMPLETION_FLAGS);	/* completion_flags */
+
+extern DAT_RETURN
+dapl_ep_post_recv(
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_COUNT,			/* num_segments */
+	IN DAT_LMR_TRIPLET *,		/* local_iov */
+	IN DAT_DTO_COOKIE,		/* user_cookie */
+	IN DAT_COMPLETION_FLAGS);	/* completion_flags */
+
+extern DAT_RETURN
+dapl_ep_post_rdma_read(
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_COUNT,			/* num_segments */
+	IN DAT_LMR_TRIPLET *,		/* local_iov */
+	IN DAT_DTO_COOKIE,		/* user_cookie */
+	IN const DAT_RMR_TRIPLET *,	/* remote_iov */
+	IN DAT_COMPLETION_FLAGS);	/* completion_flags */
+
+extern DAT_RETURN
+dapl_ep_post_rdma_write(
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_COUNT,			/* num_segments */
+	IN DAT_LMR_TRIPLET *,		/* local_iov */
+	IN DAT_DTO_COOKIE,		/* user_cookie */
+	IN const DAT_RMR_TRIPLET *,	/* remote_iov */
+	IN DAT_COMPLETION_FLAGS);	/* completion_flags */
+
+extern DAT_RETURN
+dapl_ep_get_status(
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	OUT DAT_EP_STATE *,	/* ep_state */
+	OUT DAT_BOOLEAN *,	/* in_dto_idle */
+	OUT DAT_BOOLEAN *);	/* out_dto_idle */
+
+extern DAT_RETURN
+dapl_ep_free(IN DAT_EP_HANDLE);		/* ep_handle */
+
+extern DAT_RETURN
+dapl_ep_reset(IN DAT_EP_HANDLE);	/* ep_handle */
+
+
+/* LMR functions */
+extern DAT_RETURN
+dapl_lmr_create(
+	IN DAT_IA_HANDLE,		/* ia_handle */
+	IN DAT_MEM_TYPE,		/* mem_type */
+	IN DAT_REGION_DESCRIPTION,	/* region_description */
+	IN DAT_VLEN,			/* length */
+	IN DAT_PZ_HANDLE,		/* pz_handle */
+	IN DAT_MEM_PRIV_FLAGS,		/* privileges */
+	OUT DAT_LMR_HANDLE *,		/* lmr_handle */
+	OUT DAT_LMR_CONTEXT *,		/* lmr_context */
+	OUT DAT_RMR_CONTEXT *,		/* rmr_context */
+	OUT DAT_VLEN *,			/* registered_length */
+	OUT DAT_VADDR *);		/* registered_address */
+
+extern DAT_RETURN
+dapl_lmr_query(
+	IN DAT_LMR_HANDLE,
+	IN DAT_LMR_PARAM_MASK,
+	OUT DAT_LMR_PARAM *);
+
+extern DAT_RETURN
+dapl_lmr_free(IN DAT_LMR_HANDLE);
+
+
+/* RMR Functions */
+extern DAT_RETURN
+dapl_rmr_create(
+	IN DAT_PZ_HANDLE,	/* pz_handle */
+	OUT DAT_RMR_HANDLE *);	/* rmr_handle */
+
+extern DAT_RETURN
+dapl_rmr_query(
+	IN DAT_RMR_HANDLE,	/* rmr_handle */
+	IN DAT_RMR_PARAM_MASK,	/* rmr_args_mask */
+	OUT DAT_RMR_PARAM *);	/* rmr_args */
+
+extern DAT_RETURN
+dapl_rmr_bind(
+	IN DAT_RMR_HANDLE,		/* rmr_handle */
+	IN const DAT_LMR_TRIPLET *,	/* lmr_triplet */
+	IN DAT_MEM_PRIV_FLAGS,		/* mem_priv */
+	IN DAT_EP_HANDLE,		/* ep_handle */
+	IN DAT_RMR_COOKIE,		/* user_cookie */
+	IN DAT_COMPLETION_FLAGS,	/* completion_flags */
+	INOUT DAT_RMR_CONTEXT *);	/* context */
+
+extern DAT_RETURN
+dapl_rmr_free(IN DAT_RMR_HANDLE);
+
+
+/* PSP Functions */
+extern DAT_RETURN
+dapl_psp_create(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	IN DAT_CONN_QUAL,	/* conn_qual */
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_PSP_FLAGS,	/* psp_flags */
+	OUT DAT_PSP_HANDLE *);	/* psp_handle */
+
+extern DAT_RETURN
+dapl_psp_create_any(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	OUT DAT_CONN_QUAL *,	/* conn_qual */
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	IN DAT_PSP_FLAGS,	/* psp_flags */
+	OUT DAT_PSP_HANDLE *);	/* psp_handle */
+
+extern DAT_RETURN
+dapl_psp_query(
+	IN DAT_PSP_HANDLE,
+	IN DAT_PSP_PARAM_MASK,
+	OUT DAT_PSP_PARAM *);
+
+extern DAT_RETURN
+dapl_psp_free(IN DAT_PSP_HANDLE);	/* psp_handle */
+
+
+/* RSP Functions */
+extern DAT_RETURN
+dapl_rsp_create(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	IN DAT_CONN_QUAL,	/* conn_qual */
+	IN DAT_EP_HANDLE,	/* ep_handle */
+	IN DAT_EVD_HANDLE,	/* evd_handle */
+	OUT DAT_RSP_HANDLE *);	/* rsp_handle */
+
+extern DAT_RETURN
+dapl_rsp_query(
+	IN DAT_RSP_HANDLE,
+	IN DAT_RSP_PARAM_MASK,
+	OUT DAT_RSP_PARAM *);
+
+extern DAT_RETURN
+dapl_rsp_free(IN DAT_RSP_HANDLE);	/* rsp_handle */
+
+
+/* PZ Functions */
+extern DAT_RETURN
+dapl_pz_create(
+	IN DAT_IA_HANDLE,	/* ia_handle */
+	OUT DAT_PZ_HANDLE *);	/* pz_handle */
+
+extern DAT_RETURN
+dapl_pz_query(
+	IN DAT_PZ_HANDLE,	/* pz_handle */
+	IN DAT_PZ_PARAM_MASK,	/* pz_args_mask */
+	OUT DAT_PZ_PARAM *);	/* pz_args */
+
+extern DAT_RETURN
+dapl_pz_free(IN DAT_PZ_HANDLE);	/* pz_handle */
+
+/* Non-coherent memory fucntions */
+
+extern DAT_RETURN dapl_lmr_sync_rdma_read(
+	IN	DAT_IA_HANDLE,		/* ia_handle		*/
+	IN 	const DAT_LMR_TRIPLET *, /* local_segments	*/
+	IN	DAT_VLEN);		/* num_segments		*/
+
+extern DAT_RETURN dapl_lmr_sync_rdma_write(
+	IN	DAT_IA_HANDLE,		/* ia_handle		*/
+	IN 	const DAT_LMR_TRIPLET *, /* local_segments	*/
+	IN	DAT_VLEN);		/* num_segments		*/
+
+/*
+ * SRQ functions
+ */
+extern DAT_RETURN dapl_ep_create_with_srq(
+	IN	DAT_IA_HANDLE,		/* ia_handle		*/
+	IN	DAT_PZ_HANDLE,		/* pz_handle		*/
+	IN	DAT_EVD_HANDLE,		/* recv_evd_handle	*/
+	IN	DAT_EVD_HANDLE,		/* request_evd_handle	*/
+	IN	DAT_EVD_HANDLE,		/* connect_evd_handle	*/
+	IN	DAT_SRQ_HANDLE,		/* srq_handle 		*/
+	IN	const DAT_EP_ATTR *,	/* ep_attributes	*/
+	OUT	DAT_EP_HANDLE *);	/* ep_handle		*/
+
+extern DAT_RETURN dapl_ep_recv_query(
+	IN	DAT_EP_HANDLE,		/* ep_handle		*/
+	OUT	DAT_COUNT *,		/* nbufs_allocated	*/
+	OUT	DAT_COUNT *);		/* bufs_alloc_span	*/
+
+extern DAT_RETURN dapl_ep_set_watermark(
+	IN	DAT_EP_HANDLE,		/* ep_handle		*/
+	IN	DAT_COUNT,		/* soft_high_watermark	*/
+	IN	DAT_COUNT);		/* hard_high_watermark	*/
+
+extern DAT_RETURN dapl_srq_create(
+	IN	DAT_IA_HANDLE,		/* ia_handle		*/
+	IN	DAT_PZ_HANDLE,		/* pz_handle		*/
+	IN	DAT_SRQ_ATTR *,		/* srq_attr		*/
+	OUT	DAT_SRQ_HANDLE *);	/* srq_handle		*/
+
+extern DAT_RETURN dapl_srq_free(
+	IN	DAT_SRQ_HANDLE);	/* srq_handle		*/
+
+extern DAT_RETURN dapl_srq_post_recv(
+	IN	DAT_SRQ_HANDLE,		/* srq_handle		*/
+	IN	DAT_COUNT,		/* num_segments		*/
+	IN	DAT_LMR_TRIPLET *,	/* local_iov		*/
+	IN	DAT_DTO_COOKIE);	/* user_cookie		*/
+
+extern DAT_RETURN dapl_srq_query(
+	IN	DAT_SRQ_HANDLE,		/* srq_handle		*/
+	IN	DAT_SRQ_PARAM_MASK,	/* srq_param_mask	*/
+	OUT	DAT_SRQ_PARAM *);	/* srq_param		*/
+
+extern DAT_RETURN dapl_srq_resize(
+	IN	DAT_SRQ_HANDLE,		/* srq_handle		*/
+	IN	DAT_COUNT);		/* srq_max_recv_dto	*/
+
+extern DAT_RETURN dapl_srq_set_lw(
+	IN	DAT_SRQ_HANDLE,		/* srq_handle		*/
+	IN	DAT_COUNT);		/* low_watermark	*/
+
+
+/*
+ * DAPL internal utility function prototpyes
+ */
+extern void
+dapl_llist_init_head(DAPL_LLIST_HEAD *head);
+
+extern void
+dapl_llist_init_entry(DAPL_LLIST_ENTRY *entry);
+
+extern DAT_BOOLEAN
+dapl_llist_is_empty(DAPL_LLIST_HEAD *head);
+
+extern void
+dapl_llist_add_head(
+	DAPL_LLIST_HEAD *head,
+	DAPL_LLIST_ENTRY *entry,
+	void *data);
+
+extern void
+dapl_llist_add_tail(
+	DAPL_LLIST_HEAD *head,
+	DAPL_LLIST_ENTRY *entry,
+	void *data);
+
+extern void
+dapl_llist_add_entry(
+	DAPL_LLIST_HEAD *head,
+	DAPL_LLIST_ENTRY *entry,
+	DAPL_LLIST_ENTRY *new_entry,
+	void *data);
+
+extern void *
+dapl_llist_remove_head(DAPL_LLIST_HEAD *head);
+
+extern void *
+dapl_llist_remove_tail(DAPL_LLIST_HEAD *head);
+
+extern void *
+dapl_llist_remove_entry(DAPL_LLIST_HEAD *head,
+	DAPL_LLIST_ENTRY *entry);
+
+extern void *
+dapl_llist_peek_head(DAPL_LLIST_HEAD *head);
+
+extern void *
+dapl_llist_next_entry(
+	IN DAPL_LLIST_HEAD *head,
+	IN DAPL_LLIST_ENTRY *cur_ent);
+
+extern void
+dapl_llist_debug_print_list(DAPL_LLIST_HEAD *head);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DAPL_H_ */