linux/drivers/infiniband/ulp/iser/iser_memory.c

/*
 * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
 * Copyright (c) 2013-2014 Mellanox Technologies. 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/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/scatterlist.h>

#include "iscsi_iser.h"

void iser_reg_comp(struct ib_cq *cq, struct ib_wc *wc)
{ … }

static struct iser_fr_desc *iser_reg_desc_get_fr(struct ib_conn *ib_conn)
{ … }

static void iser_reg_desc_put_fr(struct ib_conn *ib_conn,
				 struct iser_fr_desc *desc)
{ … }

int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
			   enum iser_data_dir iser_dir,
			   enum dma_data_direction dma_dir)
{ … }


void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task,
			      enum iser_data_dir iser_dir,
			      enum dma_data_direction dma_dir)
{ … }

static int iser_reg_dma(struct iser_device *device, struct iser_data_buf *mem,
			struct iser_mem_reg *reg)
{ … }

void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
			    enum iser_data_dir cmd_dir)
{ … }

static void iser_set_dif_domain(struct scsi_cmnd *sc,
				struct ib_sig_domain *domain)
{ … }

static int iser_set_sig_attrs(struct scsi_cmnd *sc,
			      struct ib_sig_attrs *sig_attrs)
{ … }

static inline void iser_set_prot_checks(struct scsi_cmnd *sc, u8 *mask)
{ … }

static inline void iser_inv_rkey(struct ib_send_wr *inv_wr, struct ib_mr *mr,
				 struct ib_cqe *cqe, struct ib_send_wr *next_wr)
{ … }

static int iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
			   struct iser_data_buf *mem,
			   struct iser_data_buf *sig_mem,
			   struct iser_reg_resources *rsc,
			   struct iser_mem_reg *sig_reg)
{ … }

static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
			    struct iser_data_buf *mem,
			    struct iser_reg_resources *rsc,
			    struct iser_mem_reg *reg)
{ … }

int iser_reg_mem_fastreg(struct iscsi_iser_task *task,
			 enum iser_data_dir dir,
			 bool all_imm)
{ … }