mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +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!
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/* server.h: AFS server record
|
|
*
|
|
* 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_AFS_SERVER_H
|
|
#define _LINUX_AFS_SERVER_H
|
|
|
|
#include "types.h"
|
|
#include "kafstimod.h"
|
|
#include <rxrpc/peer.h>
|
|
#include <linux/rwsem.h>
|
|
|
|
extern spinlock_t afs_server_peer_lock;
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* AFS server record
|
|
*/
|
|
struct afs_server
|
|
{
|
|
atomic_t usage;
|
|
struct afs_cell *cell; /* cell in which server resides */
|
|
struct list_head link; /* link in cell's server list */
|
|
struct rw_semaphore sem; /* access lock */
|
|
struct afs_timer timeout; /* graveyard timeout */
|
|
struct in_addr addr; /* server address */
|
|
struct rxrpc_peer *peer; /* peer record for this server */
|
|
struct rxrpc_connection *vlserver; /* connection to the volume location service */
|
|
|
|
/* file service access */
|
|
#define AFS_SERVER_CONN_LIST_SIZE 2
|
|
struct rxrpc_connection *fs_conn[AFS_SERVER_CONN_LIST_SIZE]; /* FS connections */
|
|
unsigned fs_conn_cnt[AFS_SERVER_CONN_LIST_SIZE]; /* per conn call count */
|
|
struct list_head fs_callq; /* queue of processes waiting to make a call */
|
|
spinlock_t fs_lock; /* access lock */
|
|
int fs_state; /* 0 or reason FS currently marked dead (-errno) */
|
|
unsigned fs_rtt; /* FS round trip time */
|
|
unsigned long fs_act_jif; /* time at which last activity occurred */
|
|
unsigned long fs_dead_jif; /* time at which no longer to be considered dead */
|
|
|
|
/* callback promise management */
|
|
struct list_head cb_promises; /* as yet unbroken promises from this server */
|
|
spinlock_t cb_lock; /* access lock */
|
|
};
|
|
|
|
extern int afs_server_lookup(struct afs_cell *cell,
|
|
const struct in_addr *addr,
|
|
struct afs_server **_server);
|
|
|
|
#define afs_get_server(S) do { atomic_inc(&(S)->usage); } while(0)
|
|
|
|
extern void afs_put_server(struct afs_server *server);
|
|
extern void afs_server_do_timeout(struct afs_server *server);
|
|
|
|
extern int afs_server_find_by_peer(const struct rxrpc_peer *peer,
|
|
struct afs_server **_server);
|
|
|
|
extern int afs_server_get_vlconn(struct afs_server *server,
|
|
struct rxrpc_connection **_conn);
|
|
|
|
static inline
|
|
struct afs_server *afs_server_get_from_peer(struct rxrpc_peer *peer)
|
|
{
|
|
struct afs_server *server;
|
|
|
|
spin_lock(&afs_server_peer_lock);
|
|
server = peer->user;
|
|
if (server)
|
|
afs_get_server(server);
|
|
spin_unlock(&afs_server_peer_lock);
|
|
|
|
return server;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* AFS server callslot grant record
|
|
*/
|
|
struct afs_server_callslot
|
|
{
|
|
struct list_head link; /* link in server's list */
|
|
struct task_struct *task; /* process waiting to make call */
|
|
struct rxrpc_connection *conn; /* connection to use (or NULL on error) */
|
|
short nconn; /* connection slot number (-1 on error) */
|
|
char ready; /* T when ready */
|
|
int errno; /* error number if nconn==-1 */
|
|
};
|
|
|
|
extern int afs_server_request_callslot(struct afs_server *server,
|
|
struct afs_server_callslot *callslot);
|
|
|
|
extern void afs_server_release_callslot(struct afs_server *server,
|
|
struct afs_server_callslot *callslot);
|
|
|
|
#endif /* _LINUX_AFS_SERVER_H */
|