You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
72 lines
2.3 KiB
20 years ago
|
/* message.h: Rx message caching
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _LINUX_RXRPC_MESSAGE_H
|
||
|
|
#define _LINUX_RXRPC_MESSAGE_H
|
||
|
|
|
||
|
|
#include <rxrpc/packet.h>
|
||
|
|
|
||
|
|
/*****************************************************************************/
|
||
|
|
/*
|
||
|
|
* Rx message record
|
||
|
|
*/
|
||
|
|
struct rxrpc_message
|
||
|
|
{
|
||
|
|
atomic_t usage;
|
||
|
|
struct list_head link; /* list link */
|
||
|
|
struct timeval stamp; /* time received or last sent */
|
||
|
|
rxrpc_seq_t seq; /* message sequence number */
|
||
|
|
|
||
|
|
int state; /* the state the message is currently in */
|
||
|
|
#define RXRPC_MSG_PREPARED 0
|
||
|
|
#define RXRPC_MSG_SENT 1
|
||
|
|
#define RXRPC_MSG_ACKED 2 /* provisionally ACK'd */
|
||
|
|
#define RXRPC_MSG_DONE 3 /* definitively ACK'd (msg->seq<ack.firstPacket) */
|
||
|
|
#define RXRPC_MSG_RECEIVED 4
|
||
|
|
#define RXRPC_MSG_ERROR -1
|
||
|
|
char rttdone; /* used for RTT */
|
||
|
|
|
||
|
|
struct rxrpc_transport *trans; /* transport received through */
|
||
|
|
struct rxrpc_connection *conn; /* connection received over */
|
||
|
|
struct sk_buff *pkt; /* received packet */
|
||
|
|
off_t offset; /* offset into pkt of next byte of data */
|
||
|
|
|
||
|
|
struct rxrpc_header hdr; /* message header */
|
||
|
|
|
||
|
|
int dcount; /* data part count */
|
||
|
|
size_t dsize; /* data size */
|
||
|
|
#define RXRPC_MSG_MAX_IOCS 8
|
||
|
|
struct kvec data[RXRPC_MSG_MAX_IOCS]; /* message data */
|
||
|
|
unsigned long dfree; /* bit mask indicating kfree(data[x]) if T */
|
||
|
|
};
|
||
|
|
|
||
|
|
#define rxrpc_get_message(M) do { atomic_inc(&(M)->usage); } while(0)
|
||
|
|
|
||
|
|
extern void __rxrpc_put_message(struct rxrpc_message *msg);
|
||
|
|
static inline void rxrpc_put_message(struct rxrpc_message *msg)
|
||
|
|
{
|
||
|
|
BUG_ON(atomic_read(&msg->usage)<=0);
|
||
|
|
if (atomic_dec_and_test(&msg->usage))
|
||
|
|
__rxrpc_put_message(msg);
|
||
|
|
}
|
||
|
|
|
||
|
|
extern int rxrpc_conn_newmsg(struct rxrpc_connection *conn,
|
||
|
|
struct rxrpc_call *call,
|
||
|
|
uint8_t type,
|
||
|
|
int count,
|
||
|
|
struct kvec *diov,
|
||
|
|
int alloc_flags,
|
||
|
|
struct rxrpc_message **_msg);
|
||
|
|
|
||
|
|
extern int rxrpc_conn_sendmsg(struct rxrpc_connection *conn, struct rxrpc_message *msg);
|
||
|
|
|
||
|
|
#endif /* _LINUX_RXRPC_MESSAGE_H */
|