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

/*
 * Copyright (c) 2012 - 2019 Intel Corporation.  All rights reserved.
 * Copyright (c) 2006 - 2012 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 <linux/err.h>
#include <linux/vmalloc.h>
#include <rdma/rdma_vt.h>
#ifdef CONFIG_DEBUG_FS
#include <linux/seq_file.h>
#endif

#include "qib.h"

static inline unsigned mk_qpn(struct rvt_qpn_table *qpt,
			      struct rvt_qpn_map *map, unsigned off)
{ … }

static inline unsigned find_next_offset(struct rvt_qpn_table *qpt,
					struct rvt_qpn_map *map, unsigned off,
					unsigned n, u16 qpt_mask)
{ … }

const struct rvt_operation_params qib_post_parms[RVT_OPERATION_MAX] = …;

static void get_map_page(struct rvt_qpn_table *qpt, struct rvt_qpn_map *map)
{ … }

/*
 * Allocate the next available QPN or
 * zero/one for QP type IB_QPT_SMI/IB_QPT_GSI.
 */
int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
		  enum ib_qp_type type, u32 port)
{ … }

/*
 * qib_free_all_qps - check for QPs still in use
 */
unsigned qib_free_all_qps(struct rvt_dev_info *rdi)
{ … }

void qib_notify_qp_reset(struct rvt_qp *qp)
{ … }

void qib_notify_error_qp(struct rvt_qp *qp)
{ … }

static int mtu_to_enum(u32 mtu)
{ … }

int qib_get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,
			   struct ib_qp_attr *attr)
{ … }

int qib_mtu_to_path_mtu(u32 mtu)
{ … }

u32 qib_mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu)
{ … }

void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp)
{ … }

void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp)
{ … }

void qib_stop_send_queue(struct rvt_qp *qp)
{ … }

void qib_quiesce_qp(struct rvt_qp *qp)
{ … }

void qib_flush_qp_waiters(struct rvt_qp *qp)
{ … }

/**
 * qib_check_send_wqe - validate wr/wqe
 * @qp: The qp
 * @wqe: The built wqe
 * @call_send: Determine if the send should be posted or scheduled
 *
 * Returns 0 on success, -EINVAL on failure
 */
int qib_check_send_wqe(struct rvt_qp *qp,
		       struct rvt_swqe *wqe, bool *call_send)
{ … }

#ifdef CONFIG_DEBUG_FS

static const char * const qp_type_str[] = …;

/**
 * qib_qp_iter_print - print information to seq_file
 * @s: the seq_file
 * @iter: the iterator
 */
void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter)
{ … }

#endif