/* * iSCSI Initiator TCP Transport * Copyright (C) 2004 Dmitry Yusupov * Copyright (C) 2004 Alex Aizman * Copyright (C) 2005 - 2006 Mike Christie * Copyright (C) 2006 Red Hat, Inc. All rights reserved. * 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. */ #ifndef ISCSI_SW_TCP_H #define ISCSI_SW_TCP_H #include <scsi/libiscsi.h> #include <scsi/libiscsi_tcp.h> struct socket; struct iscsi_tcp_conn; /* Socket connection send helper */ struct iscsi_sw_tcp_send { struct iscsi_hdr *hdr; struct iscsi_segment segment; struct iscsi_segment data_segment; }; struct iscsi_sw_tcp_conn { struct socket *sock; struct iscsi_sw_tcp_send out; /* old values for socket callbacks */ void (*old_data_ready)(struct sock *, int); void (*old_state_change)(struct sock *); void (*old_write_space)(struct sock *); /* data and header digests */ struct hash_desc tx_hash; /* CRC32C (Tx) */ struct hash_desc rx_hash; /* CRC32C (Rx) */ /* MIB custom statistics */ uint32_t sendpage_failures_cnt; uint32_t discontiguous_hdr_cnt; ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int); }; struct iscsi_sw_tcp_host { struct iscsi_session *session; }; struct iscsi_sw_tcp_hdrbuf { struct iscsi_hdr hdrbuf; char hdrextbuf[ISCSI_MAX_AHS_SIZE + ISCSI_DIGEST_SIZE]; }; #endif /* ISCSI_SW_TCP_H */