From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/scsi/iscsi_tcp.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 drivers/scsi/iscsi_tcp.h (limited to 'drivers/scsi/iscsi_tcp.h') diff --git a/drivers/scsi/iscsi_tcp.h b/drivers/scsi/iscsi_tcp.h new file mode 100644 index 000000000..68e14a344 --- /dev/null +++ b/drivers/scsi/iscsi_tcp.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * 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 + * + * See the file COPYING included with this distribution for more details. + */ + +#ifndef ISCSI_SW_TCP_H +#define ISCSI_SW_TCP_H + +#include +#include + +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; + /* Taken when accessing the sock from the netlink/sysfs interface */ + struct mutex sock_lock; + + struct work_struct recvwork; + bool queue_recv; + + struct iscsi_sw_tcp_send out; + /* old values for socket callbacks */ + void (*old_data_ready)(struct sock *); + void (*old_state_change)(struct sock *); + void (*old_write_space)(struct sock *); + + /* data and header digests */ + struct ahash_request *tx_hash; /* CRC32C (Tx) */ + struct ahash_request *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 */ -- cgit v1.2.3