2006-05-11 14:00:21 +07:00
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/*
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* iSER transport for the Open iSCSI Initiator & iSER transport internals
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*
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* Copyright (C) 2004 Dmitry Yusupov
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* Copyright (C) 2004 Alex Aizman
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* Copyright (C) 2005 Mike Christie
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* based on code maintained by open-iscsi@googlegroups.com
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*
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* Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
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* Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
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2014-04-01 20:28:41 +07:00
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* Copyright (c) 2013-2014 Mellanox Technologies. All rights reserved.
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2006-05-11 14:00:21 +07:00
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __ISCSI_ISER_H__
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#define __ISCSI_ISER_H__
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#include <linux/types.h>
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#include <linux/net.h>
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2013-05-01 20:25:25 +07:00
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#include <linux/printk.h>
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2006-05-11 14:00:21 +07:00
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#include <scsi/libiscsi.h>
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#include <scsi/scsi_transport_iscsi.h>
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2014-03-06 00:43:48 +07:00
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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2006-05-11 14:00:21 +07:00
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2011-06-06 17:43:46 +07:00
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#include <linux/interrupt.h>
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2006-05-11 14:00:21 +07:00
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
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#include <linux/mutex.h>
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#include <linux/mempool.h>
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#include <linux/uio.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_fmr_pool.h>
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#include <rdma/rdma_cm.h>
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#define DRV_NAME "iser"
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#define PFX DRV_NAME ": "
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2014-09-02 21:08:43 +07:00
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#define DRV_VER "1.4.1"
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2006-05-11 14:00:21 +07:00
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#define iser_dbg(fmt, arg...) \
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2008-04-30 03:46:52 +07:00
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do { \
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2013-05-01 20:25:25 +07:00
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if (iser_debug_level > 2) \
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2008-04-30 03:46:52 +07:00
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printk(KERN_DEBUG PFX "%s:" fmt,\
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__func__ , ## arg); \
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} while (0)
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#define iser_warn(fmt, arg...) \
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2013-05-01 20:25:25 +07:00
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do { \
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2013-07-28 16:35:36 +07:00
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if (iser_debug_level > 0) \
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2013-05-01 20:25:25 +07:00
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pr_warn(PFX "%s:" fmt, \
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__func__ , ## arg); \
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} while (0)
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#define iser_info(fmt, arg...) \
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2006-05-11 14:00:21 +07:00
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do { \
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2013-07-28 16:35:36 +07:00
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if (iser_debug_level > 1) \
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2013-05-01 20:25:25 +07:00
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pr_info(PFX "%s:" fmt, \
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2006-05-11 14:00:21 +07:00
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__func__ , ## arg); \
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} while (0)
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#define iser_err(fmt, arg...) \
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do { \
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printk(KERN_ERR PFX "%s:" fmt, \
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__func__ , ## arg); \
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} while (0)
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2006-09-11 16:22:30 +07:00
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#define SHIFT_4K 12
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2011-08-02 04:12:09 +07:00
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#define SIZE_4K (1ULL << SHIFT_4K)
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2006-09-11 16:22:30 +07:00
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#define MASK_4K (~(SIZE_4K-1))
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2011-03-31 08:57:33 +07:00
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/* support up to 512KB in one RDMA */
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2006-09-11 16:22:30 +07:00
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#define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K)
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2013-07-28 16:35:38 +07:00
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#define ISER_DEF_XMIT_CMDS_DEFAULT 512
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#if ISCSI_DEF_XMIT_CMDS_MAX > ISER_DEF_XMIT_CMDS_DEFAULT
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#define ISER_DEF_XMIT_CMDS_MAX ISCSI_DEF_XMIT_CMDS_MAX
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#else
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#define ISER_DEF_XMIT_CMDS_MAX ISER_DEF_XMIT_CMDS_DEFAULT
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#endif
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#define ISER_DEF_CMD_PER_LUN ISER_DEF_XMIT_CMDS_MAX
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2006-05-11 14:00:21 +07:00
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/* QP settings */
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/* Maximal bounds on received asynchronous PDUs */
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#define ISER_MAX_RX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */
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#define ISER_MAX_TX_MISC_PDUS 6 /* NOOP_OUT(2), TEXT(1), *
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* SCSI_TMFUNC(2), LOGOUT(1) */
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2013-07-28 16:35:38 +07:00
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#define ISER_QP_MAX_RECV_DTOS (ISER_DEF_XMIT_CMDS_MAX)
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2010-02-08 20:17:42 +07:00
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2013-07-28 16:35:38 +07:00
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#define ISER_MIN_POSTED_RX (ISER_DEF_XMIT_CMDS_MAX >> 2)
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2006-05-11 14:00:21 +07:00
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/* the max TX (send) WR supported by the iSER QP is defined by *
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* max_send_wr = T * (1 + D) + C ; D is how many inflight dataouts we expect *
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* to have at max for SCSI command. The tx posting & completion handling code *
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* supports -EAGAIN scheme where tx is suspended till the QP has room for more *
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* send WR. D=8 comes from 64K/8K */
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#define ISER_INFLIGHT_DATAOUTS 8
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2013-07-28 16:35:38 +07:00
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#define ISER_QP_MAX_REQ_DTOS (ISER_DEF_XMIT_CMDS_MAX * \
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2006-05-11 14:00:21 +07:00
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(1 + ISER_INFLIGHT_DATAOUTS) + \
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ISER_MAX_TX_MISC_PDUS + \
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ISER_MAX_RX_MISC_PDUS)
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2014-03-06 00:43:47 +07:00
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/* Max registration work requests per command */
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#define ISER_MAX_REG_WR_PER_CMD 5
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/* For Signature we don't support DATAOUTs so no need to make room for them */
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#define ISER_QP_SIG_MAX_REQ_DTOS (ISER_DEF_XMIT_CMDS_MAX * \
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(1 + ISER_MAX_REG_WR_PER_CMD) + \
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ISER_MAX_TX_MISC_PDUS + \
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ISER_MAX_RX_MISC_PDUS)
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2006-05-11 14:00:21 +07:00
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#define ISER_VER 0x10
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#define ISER_WSV 0x08
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#define ISER_RSV 0x04
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2014-03-06 00:43:39 +07:00
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#define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL
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2014-01-23 17:31:28 +07:00
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2006-05-11 14:00:21 +07:00
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struct iser_hdr {
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u8 flags;
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u8 rsvd[3];
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__be32 write_stag; /* write rkey */
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__be64 write_va;
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__be32 read_stag; /* read rkey */
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__be64 read_va;
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} __attribute__((packed));
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2013-05-01 20:25:27 +07:00
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#define ISER_ZBVA_NOT_SUPPORTED 0x80
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#define ISER_SEND_W_INV_NOT_SUPPORTED 0x40
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struct iser_cm_hdr {
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u8 flags;
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u8 rsvd[3];
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} __packed;
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2010-02-08 20:17:42 +07:00
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/* Constant PDU lengths calculations */
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#define ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr))
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#define ISER_RECV_DATA_SEG_LEN 128
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#define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN)
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#define ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN)
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2006-05-11 14:00:21 +07:00
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/* Length of an object name string */
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#define ISER_OBJECT_NAME_SIZE 64
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2014-10-01 18:01:57 +07:00
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enum iser_conn_state {
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2006-05-11 14:00:21 +07:00
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ISER_CONN_INIT, /* descriptor allocd, no conn */
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ISER_CONN_PENDING, /* in the process of being established */
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ISER_CONN_UP, /* up and running */
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ISER_CONN_TERMINATING, /* in the process of being terminated */
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ISER_CONN_DOWN, /* shut down */
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ISER_CONN_STATES_NUM
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};
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enum iser_task_status {
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ISER_TASK_STATUS_INIT = 0,
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ISER_TASK_STATUS_STARTED,
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ISER_TASK_STATUS_COMPLETED
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};
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enum iser_data_dir {
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ISER_DIR_IN = 0, /* to initiator */
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ISER_DIR_OUT, /* from initiator */
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ISER_DIRS_NUM
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};
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struct iser_data_buf {
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void *buf; /* pointer to the sg list */
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unsigned int size; /* num entries of this sg */
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unsigned long data_len; /* total data len */
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unsigned int dma_nents; /* returned by dma_map_sg */
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char *copy_buf; /* allocated copy buf for SGs unaligned *
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* for rdma which are copied */
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struct scatterlist sg_single; /* SG-ified clone of a non SG SC or *
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* unaligned SG */
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};
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/* fwd declarations */
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struct iser_device;
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2008-05-22 03:54:11 +07:00
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struct iscsi_iser_task;
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2008-05-22 03:54:14 +07:00
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struct iscsi_endpoint;
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2006-05-11 14:00:21 +07:00
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struct iser_mem_reg {
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u32 lkey;
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u32 rkey;
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u64 va;
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u64 len;
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void *mem_h;
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2013-07-28 16:35:42 +07:00
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int is_mr;
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2006-05-11 14:00:21 +07:00
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};
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struct iser_regd_buf {
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struct iser_mem_reg reg; /* memory registration info */
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void *virt_addr;
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struct iser_device *device; /* device->device for dma_unmap */
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enum dma_data_direction direction; /* direction for dma_unmap */
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unsigned int data_size;
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};
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enum iser_desc_type {
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ISCSI_TX_CONTROL ,
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ISCSI_TX_SCSI_COMMAND,
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ISCSI_TX_DATAOUT
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};
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2010-02-08 20:19:56 +07:00
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struct iser_tx_desc {
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2006-05-11 14:00:21 +07:00
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struct iser_hdr iser_header;
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struct iscsi_hdr iscsi_header;
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enum iser_desc_type type;
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2010-02-08 20:19:56 +07:00
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u64 dma_addr;
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/* sg[0] points to iser/iscsi headers, sg[1] optionally points to either
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of immediate data, unsolicited data-out or control (login,text) */
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struct ib_sge tx_sg[2];
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int num_sge;
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2006-05-11 14:00:21 +07:00
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};
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2010-02-08 20:17:42 +07:00
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#define ISER_RX_PAD_SIZE (256 - (ISER_RX_PAYLOAD_SIZE + \
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sizeof(u64) + sizeof(struct ib_sge)))
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struct iser_rx_desc {
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struct iser_hdr iser_header;
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struct iscsi_hdr iscsi_header;
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char data[ISER_RECV_DATA_SEG_LEN];
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u64 dma_addr;
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struct ib_sge rx_sg;
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char pad[ISER_RX_PAD_SIZE];
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} __attribute__((packed));
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2012-09-23 22:17:44 +07:00
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#define ISER_MAX_CQ 4
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2013-07-28 16:35:39 +07:00
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struct iser_conn;
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2014-10-01 18:01:58 +07:00
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struct ib_conn;
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2013-07-28 16:35:39 +07:00
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struct iscsi_iser_task;
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2014-10-01 18:02:07 +07:00
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/**
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* struct iser_comp - iSER completion context
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*
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* @device: pointer to device handle
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* @rx_cq: RX completion queue
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* @tx_cq: TX completion queue
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* @tasklet: Tasklet handle
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* @active_qps: Number of active QPs attached
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* to completion context
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*/
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struct iser_comp {
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struct iser_device *device;
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struct ib_cq *rx_cq;
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struct ib_cq *tx_cq;
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struct tasklet_struct tasklet;
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int active_qps;
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};
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2006-05-11 14:00:21 +07:00
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struct iser_device {
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struct ib_device *ib_device;
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struct ib_pd *pd;
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2014-03-06 00:43:42 +07:00
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struct ib_device_attr dev_attr;
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2006-05-11 14:00:21 +07:00
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struct ib_mr *mr;
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2010-05-05 21:30:10 +07:00
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struct ib_event_handler event_handler;
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2006-05-11 14:00:21 +07:00
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struct list_head ig_list; /* entry in ig devices list */
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int refcount;
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2014-10-01 18:02:07 +07:00
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int comps_used;
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struct iser_comp comps[ISER_MAX_CQ];
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2014-10-01 18:01:58 +07:00
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int (*iser_alloc_rdma_reg_res)(struct ib_conn *ib_conn,
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2013-07-28 16:35:39 +07:00
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unsigned cmds_max);
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2014-10-01 18:01:58 +07:00
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void (*iser_free_rdma_reg_res)(struct ib_conn *ib_conn);
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2013-07-28 16:35:39 +07:00
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int (*iser_reg_rdma_mem)(struct iscsi_iser_task *iser_task,
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enum iser_data_dir cmd_dir);
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void (*iser_unreg_rdma_mem)(struct iscsi_iser_task *iser_task,
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enum iser_data_dir cmd_dir);
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2006-05-11 14:00:21 +07:00
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};
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|
2014-03-06 00:43:48 +07:00
|
|
|
#define ISER_CHECK_GUARD 0xc0
|
|
|
|
#define ISER_CHECK_REFTAG 0x0f
|
|
|
|
#define ISER_CHECK_APPTAG 0x30
|
|
|
|
|
2014-03-06 00:43:43 +07:00
|
|
|
enum iser_reg_indicator {
|
2014-03-06 00:43:47 +07:00
|
|
|
ISER_DATA_KEY_VALID = 1 << 0,
|
|
|
|
ISER_PROT_KEY_VALID = 1 << 1,
|
|
|
|
ISER_SIG_KEY_VALID = 1 << 2,
|
|
|
|
ISER_FASTREG_PROTECTED = 1 << 3,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct iser_pi_context {
|
|
|
|
struct ib_mr *prot_mr;
|
|
|
|
struct ib_fast_reg_page_list *prot_frpl;
|
|
|
|
struct ib_mr *sig_mr;
|
2014-03-06 00:43:43 +07:00
|
|
|
};
|
|
|
|
|
2013-07-28 16:35:42 +07:00
|
|
|
struct fast_reg_descriptor {
|
|
|
|
struct list_head list;
|
|
|
|
/* For fast registration - FRWR */
|
|
|
|
struct ib_mr *data_mr;
|
|
|
|
struct ib_fast_reg_page_list *data_frpl;
|
2014-03-06 00:43:47 +07:00
|
|
|
struct iser_pi_context *pi_ctx;
|
2014-03-06 00:43:43 +07:00
|
|
|
/* registration indicators container */
|
|
|
|
u8 reg_indicators;
|
2013-07-28 16:35:42 +07:00
|
|
|
};
|
|
|
|
|
2014-10-01 18:01:58 +07:00
|
|
|
/**
|
|
|
|
* struct ib_conn - Infiniband related objects
|
|
|
|
*
|
|
|
|
* @cma_id: rdma_cm connection maneger handle
|
|
|
|
* @qp: Connection Queue-pair
|
|
|
|
* @post_recv_buf_count: post receive counter
|
|
|
|
* @post_send_buf_count: post send counter
|
|
|
|
* @rx_wr: receive work request for batch posts
|
|
|
|
* @device: reference to iser device
|
2014-10-01 18:02:07 +07:00
|
|
|
* @comp: iser completion context
|
2014-10-01 18:01:58 +07:00
|
|
|
* @pi_support: Indicate device T10-PI support
|
|
|
|
* @lock: protects fmr/fastreg pool
|
|
|
|
* @union.fmr:
|
|
|
|
* @pool: FMR pool for fast registrations
|
|
|
|
* @page_vec: page vector to hold mapped commands pages
|
|
|
|
* used for registration
|
|
|
|
* @union.fastreg:
|
|
|
|
* @pool: Fast registration descriptors pool for fast
|
|
|
|
* registrations
|
|
|
|
* @pool_size: Size of pool
|
|
|
|
*/
|
|
|
|
struct ib_conn {
|
|
|
|
struct rdma_cm_id *cma_id;
|
|
|
|
struct ib_qp *qp;
|
|
|
|
int post_recv_buf_count;
|
|
|
|
atomic_t post_send_buf_count;
|
|
|
|
struct ib_recv_wr rx_wr[ISER_MIN_POSTED_RX];
|
|
|
|
struct iser_device *device;
|
2014-10-01 18:02:07 +07:00
|
|
|
struct iser_comp *comp;
|
2014-10-01 18:01:58 +07:00
|
|
|
bool pi_support;
|
|
|
|
spinlock_t lock;
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
struct ib_fmr_pool *pool;
|
|
|
|
struct iser_page_vec *page_vec;
|
|
|
|
} fmr;
|
|
|
|
struct {
|
|
|
|
struct list_head pool;
|
|
|
|
int pool_size;
|
|
|
|
} fastreg;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
2006-05-11 14:00:21 +07:00
|
|
|
struct iser_conn {
|
2014-10-01 18:01:58 +07:00
|
|
|
struct ib_conn ib_conn;
|
2014-04-01 20:28:39 +07:00
|
|
|
struct iscsi_conn *iscsi_conn;
|
2008-05-22 03:54:14 +07:00
|
|
|
struct iscsi_endpoint *ep;
|
2014-10-01 18:01:57 +07:00
|
|
|
enum iser_conn_state state; /* rdma connection state */
|
2013-07-28 16:35:38 +07:00
|
|
|
unsigned qp_max_recv_dtos; /* num of rx buffers */
|
|
|
|
unsigned qp_max_recv_dtos_mask; /* above minus 1 */
|
|
|
|
unsigned min_posted_rx; /* qp_max_recv_dtos >> 2 */
|
2006-05-11 14:00:21 +07:00
|
|
|
char name[ISER_OBJECT_NAME_SIZE];
|
2014-05-22 15:00:18 +07:00
|
|
|
struct work_struct release_work;
|
2014-07-31 17:27:49 +07:00
|
|
|
struct mutex state_mutex;
|
2014-10-01 18:02:01 +07:00
|
|
|
struct completion stop_completion;
|
|
|
|
struct completion ib_completion;
|
2014-07-31 17:27:50 +07:00
|
|
|
struct completion up_completion;
|
2006-05-11 14:00:21 +07:00
|
|
|
struct list_head conn_list; /* entry in ig conn list */
|
2010-02-08 20:17:42 +07:00
|
|
|
|
|
|
|
char *login_buf;
|
2011-11-04 05:19:46 +07:00
|
|
|
char *login_req_buf, *login_resp_buf;
|
|
|
|
u64 login_req_dma, login_resp_dma;
|
2010-02-08 20:17:42 +07:00
|
|
|
unsigned int rx_desc_head;
|
|
|
|
struct iser_rx_desc *rx_descs;
|
2006-05-11 14:00:21 +07:00
|
|
|
};
|
|
|
|
|
2008-05-22 03:54:11 +07:00
|
|
|
struct iscsi_iser_task {
|
2010-02-08 20:19:56 +07:00
|
|
|
struct iser_tx_desc desc;
|
2014-10-01 18:01:57 +07:00
|
|
|
struct iser_conn *iser_conn;
|
2006-05-11 14:00:21 +07:00
|
|
|
enum iser_task_status status;
|
2014-03-06 00:43:48 +07:00
|
|
|
struct scsi_cmnd *sc;
|
2006-05-11 14:00:21 +07:00
|
|
|
int command_sent; /* set if command sent */
|
|
|
|
int dir[ISER_DIRS_NUM]; /* set if dir use*/
|
|
|
|
struct iser_regd_buf rdma_regd[ISER_DIRS_NUM];/* regd rdma buf */
|
|
|
|
struct iser_data_buf data[ISER_DIRS_NUM]; /* orig. data des*/
|
|
|
|
struct iser_data_buf data_copy[ISER_DIRS_NUM];/* contig. copy */
|
2014-03-06 00:43:48 +07:00
|
|
|
struct iser_data_buf prot[ISER_DIRS_NUM]; /* prot desc */
|
|
|
|
struct iser_data_buf prot_copy[ISER_DIRS_NUM];/* prot copy */
|
2006-05-11 14:00:21 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
struct iser_page_vec {
|
|
|
|
u64 *pages;
|
|
|
|
int length;
|
|
|
|
int offset;
|
|
|
|
int data_size;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct iser_global {
|
|
|
|
struct mutex device_list_mutex;/* */
|
|
|
|
struct list_head device_list; /* all iSER devices */
|
|
|
|
struct mutex connlist_mutex;
|
|
|
|
struct list_head connlist; /* all iSER IB connections */
|
|
|
|
|
2006-11-30 06:33:07 +07:00
|
|
|
struct kmem_cache *desc_cache;
|
2006-05-11 14:00:21 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
extern struct iser_global ig;
|
|
|
|
extern int iser_debug_level;
|
2014-03-06 00:43:46 +07:00
|
|
|
extern bool iser_pi_enable;
|
|
|
|
extern int iser_pi_guard;
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:08 +07:00
|
|
|
int iser_send_control(struct iscsi_conn *conn,
|
2008-05-22 03:54:11 +07:00
|
|
|
struct iscsi_task *task);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:08 +07:00
|
|
|
int iser_send_command(struct iscsi_conn *conn,
|
2008-05-22 03:54:11 +07:00
|
|
|
struct iscsi_task *task);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:08 +07:00
|
|
|
int iser_send_data_out(struct iscsi_conn *conn,
|
2008-05-22 03:54:11 +07:00
|
|
|
struct iscsi_task *task,
|
2008-05-22 03:54:08 +07:00
|
|
|
struct iscsi_data *hdr);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
|
|
|
void iscsi_iser_recv(struct iscsi_conn *conn,
|
|
|
|
struct iscsi_hdr *hdr,
|
|
|
|
char *rx_data,
|
|
|
|
int rx_data_len);
|
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
void iser_conn_init(struct iser_conn *iser_conn);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
void iser_conn_release(struct iser_conn *iser_conn);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:02:01 +07:00
|
|
|
int iser_conn_terminate(struct iser_conn *iser_conn);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-05-22 15:00:18 +07:00
|
|
|
void iser_release_work(struct work_struct *work);
|
|
|
|
|
2010-02-08 20:17:42 +07:00
|
|
|
void iser_rcv_completion(struct iser_rx_desc *desc,
|
|
|
|
unsigned long dto_xfer_len,
|
2014-10-01 18:01:58 +07:00
|
|
|
struct ib_conn *ib_conn);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
void iser_snd_completion(struct iser_tx_desc *desc,
|
2014-10-01 18:01:58 +07:00
|
|
|
struct ib_conn *ib_conn);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:11 +07:00
|
|
|
void iser_task_rdma_init(struct iscsi_iser_task *task);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:11 +07:00
|
|
|
void iser_task_rdma_finalize(struct iscsi_iser_task *task);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
void iser_free_rx_descriptors(struct iser_conn *iser_conn);
|
2010-02-08 20:17:42 +07:00
|
|
|
|
2014-03-06 00:43:44 +07:00
|
|
|
void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
|
|
|
|
struct iser_data_buf *mem,
|
|
|
|
struct iser_data_buf *mem_copy,
|
|
|
|
enum iser_data_dir cmd_dir);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2013-07-28 16:35:41 +07:00
|
|
|
int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *task,
|
|
|
|
enum iser_data_dir cmd_dir);
|
2014-03-06 00:43:39 +07:00
|
|
|
int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *task,
|
|
|
|
enum iser_data_dir cmd_dir);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
int iser_connect(struct iser_conn *iser_conn,
|
2014-07-31 17:27:44 +07:00
|
|
|
struct sockaddr *src_addr,
|
|
|
|
struct sockaddr *dst_addr,
|
2006-05-11 14:00:21 +07:00
|
|
|
int non_blocking);
|
|
|
|
|
2014-10-01 18:01:58 +07:00
|
|
|
int iser_reg_page_vec(struct ib_conn *ib_conn,
|
2006-05-11 14:00:21 +07:00
|
|
|
struct iser_page_vec *page_vec,
|
|
|
|
struct iser_mem_reg *mem_reg);
|
|
|
|
|
2013-07-28 16:35:41 +07:00
|
|
|
void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
|
|
|
|
enum iser_data_dir cmd_dir);
|
2014-03-06 00:43:39 +07:00
|
|
|
void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
|
|
|
|
enum iser_data_dir cmd_dir);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2014-10-01 18:01:57 +07:00
|
|
|
int iser_post_recvl(struct iser_conn *iser_conn);
|
|
|
|
int iser_post_recvm(struct iser_conn *iser_conn, int count);
|
2014-10-01 18:01:58 +07:00
|
|
|
int iser_post_send(struct ib_conn *ib_conn, struct iser_tx_desc *tx_desc);
|
2006-05-11 14:00:21 +07:00
|
|
|
|
2008-05-22 03:54:11 +07:00
|
|
|
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
|
2006-09-27 20:43:06 +07:00
|
|
|
struct iser_data_buf *data,
|
|
|
|
enum iser_data_dir iser_dir,
|
|
|
|
enum dma_data_direction dma_dir);
|
|
|
|
|
2014-03-06 00:43:44 +07:00
|
|
|
void iser_dma_unmap_task_data(struct iscsi_iser_task *iser_task,
|
|
|
|
struct iser_data_buf *data);
|
2010-02-08 20:19:56 +07:00
|
|
|
int iser_initialize_task_headers(struct iscsi_task *task,
|
|
|
|
struct iser_tx_desc *tx_desc);
|
2014-10-01 18:01:57 +07:00
|
|
|
int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
|
|
|
|
struct iscsi_session *session);
|
2014-10-01 18:01:58 +07:00
|
|
|
int iser_create_fmr_pool(struct ib_conn *ib_conn, unsigned cmds_max);
|
|
|
|
void iser_free_fmr_pool(struct ib_conn *ib_conn);
|
|
|
|
int iser_create_fastreg_pool(struct ib_conn *ib_conn, unsigned cmds_max);
|
|
|
|
void iser_free_fastreg_pool(struct ib_conn *ib_conn);
|
2014-03-06 00:43:50 +07:00
|
|
|
u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
|
|
|
|
enum iser_data_dir cmd_dir, sector_t *sector);
|
2006-05-11 14:00:21 +07:00
|
|
|
#endif
|