mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
/* transport.h: Rx transport management
|
|
*
|
|
* 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_TRANSPORT_H
|
|
#define _LINUX_RXRPC_TRANSPORT_H
|
|
|
|
#include <rxrpc/types.h>
|
|
#include <rxrpc/krxiod.h>
|
|
#include <rxrpc/rxrpc.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/rwsem.h>
|
|
|
|
typedef int (*rxrpc_newcall_fnx_t)(struct rxrpc_call *call);
|
|
|
|
extern wait_queue_head_t rxrpc_krxiod_wq;
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* Rx operation specification
|
|
* - tables of these must be sorted by op ID so that they can be binary-chop searched
|
|
*/
|
|
struct rxrpc_operation
|
|
{
|
|
unsigned id; /* operation ID */
|
|
size_t asize; /* minimum size of argument block */
|
|
const char *name; /* name of operation */
|
|
void *user; /* initial user data */
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* Rx transport service record
|
|
*/
|
|
struct rxrpc_service
|
|
{
|
|
struct list_head link; /* link in services list on transport */
|
|
struct module *owner; /* owner module */
|
|
rxrpc_newcall_fnx_t new_call; /* new call handler function */
|
|
const char *name; /* name of service */
|
|
unsigned short service_id; /* Rx service ID */
|
|
rxrpc_call_attn_func_t attn_func; /* call requires attention callback */
|
|
rxrpc_call_error_func_t error_func; /* call error callback */
|
|
rxrpc_call_aemap_func_t aemap_func; /* abort -> errno mapping callback */
|
|
|
|
const struct rxrpc_operation *ops_begin; /* beginning of operations table */
|
|
const struct rxrpc_operation *ops_end; /* end of operations table */
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* Rx transport endpoint record
|
|
*/
|
|
struct rxrpc_transport
|
|
{
|
|
atomic_t usage;
|
|
struct socket *socket; /* my UDP socket */
|
|
struct list_head services; /* services listening on this socket */
|
|
struct list_head link; /* link in transport list */
|
|
struct list_head proc_link; /* link in transport proc list */
|
|
struct list_head krxiodq_link; /* krxiod attention queue link */
|
|
spinlock_t lock; /* access lock */
|
|
struct list_head peer_active; /* active peers connected to over this socket */
|
|
struct list_head peer_graveyard; /* inactive peer list */
|
|
spinlock_t peer_gylock; /* peer graveyard lock */
|
|
wait_queue_head_t peer_gy_waitq; /* wait queue hit when peer graveyard is empty */
|
|
rwlock_t peer_lock; /* peer list access lock */
|
|
atomic_t peer_count; /* number of peers */
|
|
struct rxrpc_peer_ops *peer_ops; /* default peer operations */
|
|
unsigned short port; /* port upon which listening */
|
|
volatile char error_rcvd; /* T if received ICMP error outstanding */
|
|
};
|
|
|
|
extern int rxrpc_create_transport(unsigned short port,
|
|
struct rxrpc_transport **_trans);
|
|
|
|
static inline void rxrpc_get_transport(struct rxrpc_transport *trans)
|
|
{
|
|
BUG_ON(atomic_read(&trans->usage) <= 0);
|
|
atomic_inc(&trans->usage);
|
|
//printk("rxrpc_get_transport(%p{u=%d})\n",
|
|
// trans, atomic_read(&trans->usage));
|
|
}
|
|
|
|
extern void rxrpc_put_transport(struct rxrpc_transport *trans);
|
|
|
|
extern int rxrpc_add_service(struct rxrpc_transport *trans,
|
|
struct rxrpc_service *srv);
|
|
|
|
extern void rxrpc_del_service(struct rxrpc_transport *trans,
|
|
struct rxrpc_service *srv);
|
|
|
|
extern void rxrpc_trans_receive_packet(struct rxrpc_transport *trans);
|
|
|
|
extern int rxrpc_trans_immediate_abort(struct rxrpc_transport *trans,
|
|
struct rxrpc_message *msg,
|
|
int error);
|
|
|
|
#endif /* _LINUX_RXRPC_TRANSPORT_H */
|