7aab9c14a4
Don't assume that csio->data_ptr is pointer to a data buffer that can be passed to icl_get_pdu_data and icl_append_data. For unmapped I/O requests, csio->data_ptr is instead a pointer to a struct bio as indicated by CAM_DATA_BIO. To support these requests, add icl_pdu_append_bio and icl_pdu_get_bio methods which pass a pointer to the bio and an offset and length relative to the bio's buffer. Note that only backends supporting unmapped requests need to implement these hooks. Implement simple no-op hooks for the iser backend. Reviewed by: mav Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D34382
177 lines
4.3 KiB
C
177 lines
4.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2014 The FreeBSD Foundation
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* This file is used to provide the initiator and target with a prettier
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* interface. It must not be included by ICL modules, such as icl_soft.c.
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*/
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#ifndef ICL_WRAPPERS_H
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#define ICL_WRAPPERS_H
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#include <sys/bio.h>
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#include <sys/kobj.h>
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#include <dev/iscsi/icl.h>
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#include <icl_conn_if.h>
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static inline struct icl_pdu *
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icl_pdu_new(struct icl_conn *ic, int flags)
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{
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return (ICL_CONN_NEW_PDU(ic, flags));
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}
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static inline size_t
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icl_pdu_data_segment_length(const struct icl_pdu *ip)
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{
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return (ICL_CONN_PDU_DATA_SEGMENT_LENGTH(ip->ip_conn, ip));
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}
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static inline int
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icl_pdu_append_bio(struct icl_pdu *ip, struct bio *bp, size_t offset,
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size_t len, int flags)
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{
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return (ICL_CONN_PDU_APPEND_BIO(ip->ip_conn, ip, bp, offset, len,
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flags));
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}
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static inline int
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icl_pdu_append_data(struct icl_pdu *ip, const void *addr, size_t len, int flags)
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{
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return (ICL_CONN_PDU_APPEND_DATA(ip->ip_conn, ip, addr, len, flags));
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}
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static inline void
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icl_pdu_get_bio(struct icl_pdu *ip, size_t pdu_off, struct bio *bp,
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size_t bio_off, size_t len)
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{
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ICL_CONN_PDU_GET_BIO(ip->ip_conn, ip, pdu_off, bp, bio_off, len);
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}
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static inline void
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icl_pdu_get_data(struct icl_pdu *ip, size_t off, void *addr, size_t len)
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{
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ICL_CONN_PDU_GET_DATA(ip->ip_conn, ip, off, addr, len);
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}
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static inline void
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icl_pdu_queue(struct icl_pdu *ip)
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{
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ICL_CONN_PDU_QUEUE(ip->ip_conn, ip);
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}
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static inline void
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icl_pdu_queue_cb(struct icl_pdu *ip, icl_pdu_cb cb)
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{
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ICL_CONN_PDU_QUEUE_CB(ip->ip_conn, ip, cb);
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}
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static inline void
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icl_pdu_free(struct icl_pdu *ip)
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{
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ICL_CONN_PDU_FREE(ip->ip_conn, ip);
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}
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static inline void
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icl_conn_free(struct icl_conn *ic)
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{
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ICL_CONN_FREE(ic);
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}
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static inline int
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icl_conn_handoff(struct icl_conn *ic, int fd)
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{
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return (ICL_CONN_HANDOFF(ic, fd));
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}
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static inline void
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icl_conn_close(struct icl_conn *ic)
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{
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ICL_CONN_CLOSE(ic);
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}
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static inline int
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icl_conn_task_setup(struct icl_conn *ic, struct icl_pdu *ip,
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struct ccb_scsiio *csio, uint32_t *task_tagp, void **prvp)
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{
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return (ICL_CONN_TASK_SETUP(ic, ip, csio, task_tagp, prvp));
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}
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static inline void
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icl_conn_task_done(struct icl_conn *ic, void *prv)
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{
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ICL_CONN_TASK_DONE(ic, prv);
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}
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static inline int
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icl_conn_transfer_setup(struct icl_conn *ic, struct icl_pdu *ip,
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union ctl_io *io, uint32_t *transfer_tagp, void **prvp)
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{
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return (ICL_CONN_TRANSFER_SETUP(ic, ip, io, transfer_tagp, prvp));
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}
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static inline void
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icl_conn_transfer_done(struct icl_conn *ic, void *prv)
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{
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ICL_CONN_TRANSFER_DONE(ic, prv);
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}
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/*
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* The function below is only used with ICL_KERNEL_PROXY.
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*/
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static inline int
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icl_conn_connect(struct icl_conn *ic, int domain, int socktype,
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int protocol, struct sockaddr *from_sa, struct sockaddr *to_sa)
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{
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return (ICL_CONN_CONNECT(ic, domain, socktype, protocol,
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from_sa, to_sa));
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}
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#endif /* !ICL_WRAPPERS_H */
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