mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 00:04:15 +08:00
fa8df34357
Use sendmsg() with MSG_SPLICE_PAGES rather than sendpage. This allows multiple pages and multipage folios to be passed through. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> cc: Lee Duncan <lduncan@suse.com> cc: Chris Leech <cleech@redhat.com> cc: "James E.J. Bottomley" <jejb@linux.ibm.com> cc: "Martin K. Petersen" <martin.petersen@oracle.com> cc: Jens Axboe <axboe@kernel.dk> cc: Matthew Wilcox <willy@infradead.org> cc: Al Viro <viro@zeniv.linux.org.uk> cc: open-iscsi@googlegroups.com Link: https://lore.kernel.org/r/20230623225513.2732256-12-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/* 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 <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;
|
|
/* 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;
|
|
};
|
|
|
|
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 */
|