linux/drivers/infiniband/hw/qib/qib_uc.c

/*
 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
 * All rights reserved.
 * Copyright (c) 2005, 2006 PathScale, 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.
 */

#include "qib.h"

/* cut down ridiculously long IB macro names */
#define OP(x) …

/**
 * qib_make_uc_req - construct a request packet (SEND, RDMA write)
 * @qp: a pointer to the QP
 * @flags: unused
 *
 * Assumes the s_lock is held.
 *
 * Return 1 if constructed; otherwise, return 0.
 */
int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags)
{ … }

/**
 * qib_uc_rcv - handle an incoming UC packet
 * @ibp: the port the packet came in on
 * @hdr: the header of the packet
 * @has_grh: true if the packet has a GRH
 * @data: the packet data
 * @tlen: the length of the packet
 * @qp: the QP for this packet.
 *
 * This is called from qib_qp_rcv() to process an incoming UC packet
 * for the given QP.
 * Called at interrupt level.
 */
void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
		int has_grh, void *data, u32 tlen, struct rvt_qp *qp)
{ … }