gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 436 deletions

diff --git a/gpxe/src/net/infiniband/ib_cmrc.c b/gpxe/src/net/infiniband/ib_cmrc.c
deleted file mode 100644
index 2d648115..00000000
--- a/gpxe/src/net/infiniband/ib_cmrc.c
+++ /dev/null
@@ -1,436 +0,0 @@
-/*
- * Copyright (C) 2009 Fen Systems Ltd <mbrown@fensystems.co.uk>.
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-FILE_LICENCE ( BSD2 );
-
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/xfer.h>
-#include <gpxe/process.h>
-#include <gpxe/infiniband.h>
-#include <gpxe/ib_cm.h>
-#include <gpxe/ib_cmrc.h>
-
-/**
- * @file
- *
- * Infiniband Communication-managed Reliable Connections
- *
- */
-
-/** CMRC number of send WQEs
- *
- * This is a policy decision.
- */
-#define IB_CMRC_NUM_SEND_WQES 4
-
-/** CMRC number of receive WQEs
- *
- * This is a policy decision.
- */
-#define IB_CMRC_NUM_RECV_WQES 2
-
-/** CMRC number of completion queue entries
- *
- * This is a policy decision
- */
-#define IB_CMRC_NUM_CQES 8
-
-/** An Infiniband Communication-Managed Reliable Connection */
-struct ib_cmrc_connection {
-	/** Reference count */
-	struct refcnt refcnt;
-	/** Data transfer interface */
-	struct xfer_interface xfer;
-	/** Infiniband device */
-	struct ib_device *ibdev;
-	/** Completion queue */
-	struct ib_completion_queue *cq;
-	/** Queue pair */
-	struct ib_queue_pair *qp;
-	/** Connection */
-	struct ib_connection *conn;
-	/** Destination GID */
-	struct ib_gid dgid;
-	/** Service ID */
-	struct ib_gid_half service_id;
-	/** QP is connected */
-	int connected;
-	/** Shutdown process */
-	struct process shutdown;
-};
-
-/**
- * Shut down CMRC connection gracefully
- *
- * @v process		Process
- *
- * The Infiniband data structures are not reference-counted or
- * guarded.  It is therefore unsafe to shut them down while we may be
- * in the middle of a callback from the Infiniband stack (e.g. in a
- * receive completion handler).
- *
- * This shutdown process will run some time after the call to
- * ib_cmrc_close(), after control has returned out of the Infiniband
- * core, and will shut down the Infiniband interfaces cleanly.
- *
- * The shutdown process holds an implicit reference on the CMRC
- * connection, ensuring that the structure is not freed before the
- * shutdown process has run.
- */
-static void ib_cmrc_shutdown ( struct process *process ) {
-	struct ib_cmrc_connection *cmrc =
-		container_of ( process, struct ib_cmrc_connection, shutdown );
-
-	DBGC ( cmrc, "CMRC %p shutting down\n", cmrc );
-
-	/* Shut down Infiniband interface */
-	ib_destroy_conn ( cmrc->ibdev, cmrc->qp, cmrc->conn );
-	ib_destroy_qp ( cmrc->ibdev, cmrc->qp );
-	ib_destroy_cq ( cmrc->ibdev, cmrc->cq );
-	ib_close ( cmrc->ibdev );
-
-	/* Remove process from run queue */
-	process_del ( &cmrc->shutdown );
-
-	/* Drop the remaining reference */
-	ref_put ( &cmrc->refcnt );
-}
-
-/**
- * Close CMRC connection
- *
- * @v cmrc		Communication-Managed Reliable Connection
- * @v rc		Reason for close
- */
-static void ib_cmrc_close ( struct ib_cmrc_connection *cmrc, int rc ) {
-
-	/* Close data transfer interface */
-	xfer_nullify ( &cmrc->xfer );
-	xfer_close ( &cmrc->xfer, rc );
-
-	/* Schedule shutdown process */
-	process_add ( &cmrc->shutdown );
-}
-
-/**
- * Handle change of CMRC connection status
- *
- * @v ibdev		Infiniband device
- * @v qp		Queue pair
- * @v conn		Connection
- * @v rc_cm		Connection status code
- * @v private_data	Private data, if available
- * @v private_data_len	Length of private data
- */
-static void ib_cmrc_changed ( struct ib_device *ibdev __unused,
-			      struct ib_queue_pair *qp,
-			      struct ib_connection *conn __unused, int rc_cm,
-			      void *private_data, size_t private_data_len ) {
-	struct ib_cmrc_connection *cmrc = ib_qp_get_ownerdata ( qp );
-	int rc_xfer;
-
-	/* Record connection status */
-	if ( rc_cm == 0 ) {
-		DBGC ( cmrc, "CMRC %p connected\n", cmrc );
-		cmrc->connected = 1;
-	} else {
-		DBGC ( cmrc, "CMRC %p disconnected: %s\n",
-		       cmrc, strerror ( rc_cm ) );
-		cmrc->connected = 0;
-	}
-
-	/* Pass up any private data */
-	DBGC2 ( cmrc, "CMRC %p received private data:\n", cmrc );
-	DBGC2_HDA ( cmrc, 0, private_data, private_data_len );
-	if ( private_data &&
-	     ( rc_xfer = xfer_deliver_raw ( &cmrc->xfer, private_data,
-					    private_data_len ) ) != 0 ) {
-		DBGC ( cmrc, "CMRC %p could not deliver private data: %s\n",
-		       cmrc, strerror ( rc_xfer ) );
-		ib_cmrc_close ( cmrc, rc_xfer );
-		return;
-	}
-
-	/* If we are disconnected, close the upper connection */
-	if ( rc_cm != 0 ) {
-		ib_cmrc_close ( cmrc, rc_cm );
-		return;
-	}
-}
-
-/** CMRC connection operations */
-static struct ib_connection_operations ib_cmrc_conn_op = {
-	.changed = ib_cmrc_changed,
-};
-
-/**
- * Handle CMRC send completion
- *
- * @v ibdev		Infiniband device
- * @v qp		Queue pair
- * @v iobuf		I/O buffer
- * @v rc		Completion status code
- */
-static void ib_cmrc_complete_send ( struct ib_device *ibdev __unused,
-				    struct ib_queue_pair *qp,
-				    struct io_buffer *iobuf, int rc ) {
-	struct ib_cmrc_connection *cmrc = ib_qp_get_ownerdata ( qp );
-
-	/* Free the completed I/O buffer */
-	free_iob ( iobuf );
-
-	/* Close the connection on any send errors */
-	if ( rc != 0 ) {
-		DBGC ( cmrc, "CMRC %p send error: %s\n",
-		       cmrc, strerror ( rc ) );
-		ib_cmrc_close ( cmrc, rc );
-		return;
-	}
-}
-
-/**
- * Handle CMRC receive completion
- *
- * @v ibdev		Infiniband device
- * @v qp		Queue pair
- * @v av		Address vector, or NULL
- * @v iobuf		I/O buffer
- * @v rc		Completion status code
- */
-static void ib_cmrc_complete_recv ( struct ib_device *ibdev __unused,
-				    struct ib_queue_pair *qp,
-				    struct ib_address_vector *av __unused,
-				    struct io_buffer *iobuf, int rc ) {
-	struct ib_cmrc_connection *cmrc = ib_qp_get_ownerdata ( qp );
-
-	/* Close the connection on any receive errors */
-	if ( rc != 0 ) {
-		DBGC ( cmrc, "CMRC %p receive error: %s\n",
-		       cmrc, strerror ( rc ) );
-		free_iob ( iobuf );
-		ib_cmrc_close ( cmrc, rc );
-		return;
-	}
-
-	DBGC2 ( cmrc, "CMRC %p received:\n", cmrc );
-	DBGC2_HDA ( cmrc, 0, iobuf->data, iob_len ( iobuf ) );
-
-	/* Pass up data */
-	if ( ( rc = xfer_deliver_iob ( &cmrc->xfer, iobuf ) ) != 0 ) {
-		DBGC ( cmrc, "CMRC %p could not deliver data: %s\n",
-		       cmrc, strerror ( rc ) );
-		ib_cmrc_close ( cmrc, rc );
-		return;
-	}
-}
-
-/** Infiniband CMRC completion operations */
-static struct ib_completion_queue_operations ib_cmrc_completion_ops = {
-	.complete_send = ib_cmrc_complete_send,
-	.complete_recv = ib_cmrc_complete_recv,
-};
-
-/**
- * Send data via CMRC
- *
- * @v xfer		Data transfer interface
- * @v iobuf		Datagram I/O buffer
- * @v meta		Data transfer metadata
- * @ret rc		Return status code
- */
-static int ib_cmrc_xfer_deliver_iob ( struct xfer_interface *xfer,
-				      struct io_buffer *iobuf,
-				      struct xfer_metadata *meta __unused ) {
-	struct ib_cmrc_connection *cmrc =
-		container_of ( xfer, struct ib_cmrc_connection, xfer );
-	int rc;
-
-	/* If no connection has yet been attempted, send this datagram
-	 * as the CM REQ private data.  Otherwise, send it via the QP.
-	 */
-	if ( ! cmrc->connected ) {
-
-		/* Abort if we have already sent a CM connection request */
-		if ( cmrc->conn ) {
-			DBGC ( cmrc, "CMRC %p attempt to send before "
-			       "connection is complete\n", cmrc );
-			rc = -EIO;
-			goto out;
-		}
-
-		/* Send via CM connection request */
-		cmrc->conn = ib_create_conn ( cmrc->ibdev, cmrc->qp,
-					      &cmrc->dgid, &cmrc->service_id,
-					      iobuf->data, iob_len ( iobuf ),
-					      &ib_cmrc_conn_op );
-		if ( ! cmrc->conn ) {
-			DBGC ( cmrc, "CMRC %p could not connect\n", cmrc );
-			rc = -ENOMEM;
-			goto out;
-		}
-
-	} else {
-
-		/* Send via QP */
-		if ( ( rc = ib_post_send ( cmrc->ibdev, cmrc->qp, NULL,
-					   iob_disown ( iobuf ) ) ) != 0 ) {
-			DBGC ( cmrc, "CMRC %p could not send: %s\n",
-			       cmrc, strerror ( rc ) );
-			goto out;
-		}
-
-	}
-	return 0;
-
- out:
-	/* Free the I/O buffer if necessary */
-	free_iob ( iobuf );
-
-	/* Close the connection on any errors */
-	if ( rc != 0 )
-		ib_cmrc_close ( cmrc, rc );
-
-	return rc;
-}
-
-/**
- * Check CMRC flow control window
- *
- * @v xfer		Data transfer interface
- * @ret len		Length of window
- */
-static size_t ib_cmrc_xfer_window ( struct xfer_interface *xfer ) {
-	struct ib_cmrc_connection *cmrc =
-		container_of ( xfer, struct ib_cmrc_connection, xfer );
-
-	/* We indicate a window only when we are successfully
-	 * connected.
-	 */
-	return ( cmrc->connected ? IB_MAX_PAYLOAD_SIZE : 0 );
-}
-
-/**
- * Close CMRC data-transfer interface
- *
- * @v xfer		Data transfer interface
- * @v rc		Reason for close
- */
-static void ib_cmrc_xfer_close ( struct xfer_interface *xfer, int rc ) {
-	struct ib_cmrc_connection *cmrc =
-		container_of ( xfer, struct ib_cmrc_connection, xfer );
-
-	DBGC ( cmrc, "CMRC %p closed: %s\n", cmrc, strerror ( rc ) );
-	ib_cmrc_close ( cmrc, rc );
-}
-
-/** CMRC data transfer interface operations */
-static struct xfer_interface_operations ib_cmrc_xfer_operations = {
-	.close		= ib_cmrc_xfer_close,
-	.vredirect	= ignore_xfer_vredirect,
-	.window		= ib_cmrc_xfer_window,
-	.alloc_iob	= default_xfer_alloc_iob,
-	.deliver_iob	= ib_cmrc_xfer_deliver_iob,
-	.deliver_raw	= xfer_deliver_as_iob,
-};
-
-/**
- * Open CMRC connection
- *
- * @v xfer		Data transfer interface
- * @v ibdev		Infiniband device
- * @v dgid		Destination GID
- * @v service_id	Service ID
- * @ret rc		Returns status code
- */
-int ib_cmrc_open ( struct xfer_interface *xfer, struct ib_device *ibdev,
-		   struct ib_gid *dgid, struct ib_gid_half *service_id ) {
-	struct ib_cmrc_connection *cmrc;
-	int rc;
-
-	/* Allocate and initialise structure */
-	cmrc = zalloc ( sizeof ( *cmrc ) );
-	if ( ! cmrc ) {
-		rc = -ENOMEM;
-		goto err_alloc;
-	}
-	xfer_init ( &cmrc->xfer, &ib_cmrc_xfer_operations, &cmrc->refcnt );
-	cmrc->ibdev = ibdev;
-	memcpy ( &cmrc->dgid, dgid, sizeof ( cmrc->dgid ) );
-	memcpy ( &cmrc->service_id, service_id, sizeof ( cmrc->service_id ) );
-	process_init_stopped ( &cmrc->shutdown, ib_cmrc_shutdown,
-			       &cmrc->refcnt );
-
-	/* Open Infiniband device */
-	if ( ( rc = ib_open ( ibdev ) ) != 0 ) {
-		DBGC ( cmrc, "CMRC %p could not open device: %s\n",
-		       cmrc, strerror ( rc ) );
-		goto err_open;
-	}
-
-	/* Create completion queue */
-	cmrc->cq = ib_create_cq ( ibdev, IB_CMRC_NUM_CQES,
-				  &ib_cmrc_completion_ops );
-	if ( ! cmrc->cq ) {
-		DBGC ( cmrc, "CMRC %p could not create completion queue\n",
-		       cmrc );
-		rc = -ENOMEM;
-		goto err_create_cq;
-	}
-
-	/* Create queue pair */
-	cmrc->qp = ib_create_qp ( ibdev, IB_QPT_RC, IB_CMRC_NUM_SEND_WQES,
-				  cmrc->cq, IB_CMRC_NUM_RECV_WQES, cmrc->cq );
-	if ( ! cmrc->qp ) {
-		DBGC ( cmrc, "CMRC %p could not create queue pair\n", cmrc );
-		rc = -ENOMEM;
-		goto err_create_qp;
-	}
-	ib_qp_set_ownerdata ( cmrc->qp, cmrc );
-	DBGC ( cmrc, "CMRC %p using QPN %lx\n", cmrc, cmrc->qp->qpn );
-
-	/* Attach to parent interface, transfer reference (implicitly)
-	 * to our shutdown process, and return.
-	 */
-	xfer_plug_plug ( &cmrc->xfer, xfer );
-	return 0;
-
-	ib_destroy_qp ( ibdev, cmrc->qp );
- err_create_qp:
-	ib_destroy_cq ( ibdev, cmrc->cq );
- err_create_cq:
-	ib_close ( ibdev );
- err_open:
-	ref_put ( &cmrc->refcnt );
- err_alloc:
-	return rc;
-}