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/*
* iSCSI Initiator TCP Transport
* Copyright ( C ) 2004 Dmitry Yusupov
* Copyright ( C ) 2004 Alex Aizman
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* Copyright ( C ) 2005 - 2006 Mike Christie
* Copyright ( C ) 2006 Red Hat , Inc . All rights reserved .
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* maintained by open - iscsi @ googlegroups . com
*
* This program is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation ; either version 2 of the License , or
* ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful , but
* WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* General Public License for more details .
*
* See the file COPYING included with this distribution for more details .
*/
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# ifndef ISCSI_SW_TCP_H
# define ISCSI_SW_TCP_H
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# include <scsi/libiscsi.h>
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# include <scsi/libiscsi_tcp.h>
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struct socket ;
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struct iscsi_tcp_conn ;
/* Socket connection send helper */
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struct iscsi_sw_tcp_send {
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struct iscsi_hdr * hdr ;
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struct iscsi_segment segment ;
struct iscsi_segment data_segment ;
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} ;
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struct iscsi_sw_tcp_conn {
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struct socket * sock ;
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struct iscsi_sw_tcp_send out ;
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/* old values for socket callbacks */
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void ( * old_data_ready ) ( struct sock * ) ;
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void ( * old_state_change ) ( struct sock * ) ;
void ( * old_write_space ) ( struct sock * ) ;
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/* data and header digests */
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struct hash_desc tx_hash ; /* CRC32C (Tx) */
struct hash_desc rx_hash ; /* CRC32C (Rx) */
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/* MIB custom statistics */
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uint32_t sendpage_failures_cnt ;
uint32_t discontiguous_hdr_cnt ;
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ssize_t ( * sendpage ) ( struct socket * , struct page * , int , size_t , int ) ;
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} ;
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struct iscsi_sw_tcp_host {
struct iscsi_session * session ;
} ;
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struct iscsi_sw_tcp_hdrbuf {
struct iscsi_hdr hdrbuf ;
char hdrextbuf [ ISCSI_MAX_AHS_SIZE +
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ISCSI_DIGEST_SIZE ] ;
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} ;
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# endif /* ISCSI_SW_TCP_H */