1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef _LINUX_SUNRPC_SCHED_H_
13#define _LINUX_SUNRPC_SCHED_H_
14
15#include <linux/timer.h>
16#include <linux/sunrpc/types.h>
17#include <linux/spinlock.h>
18#include <linux/wait.h>
19#include <linux/workqueue.h>
20#include <linux/sunrpc/xdr.h>
21
22struct rpc_procinfo;
23struct rpc_message {
24 struct rpc_procinfo * rpc_proc;
25 void * rpc_argp;
26 void * rpc_resp;
27 struct rpc_cred * rpc_cred;
28};
29
30struct rpc_call_ops;
31struct rpc_wait_queue;
32struct rpc_wait {
33 struct list_head list;
34 struct list_head links;
35 struct rpc_wait_queue * rpc_waitq;
36};
37
38struct rpc_task {
39#ifdef RPC_DEBUG
40 unsigned long tk_magic;
41#endif
42 atomic_t tk_count;
43 struct list_head tk_task;
44 struct rpc_clnt * tk_client;
45 struct rpc_rqst * tk_rqstp;
46 int tk_status;
47
48 struct rpc_message tk_msg;
49 __u8 tk_garb_retry;
50 __u8 tk_cred_retry;
51
52 unsigned long tk_cookie;
53
54 void (*tk_timeout_fn)(struct rpc_task *);
55 void (*tk_callback)(struct rpc_task *);
56 void (*tk_action)(struct rpc_task *);
57 const struct rpc_call_ops *tk_ops;
58 void * tk_calldata;
59
60 struct timer_list tk_timer;
61 unsigned long tk_timeout;
62 unsigned short tk_flags;
63 unsigned char tk_priority : 2;
64 unsigned long tk_runstate;
65 struct workqueue_struct *tk_workqueue;
66 union {
67 struct work_struct tk_work;
68 struct rpc_wait tk_wait;
69 } u;
70
71 unsigned short tk_timeouts;
72 size_t tk_bytes_sent;
73 unsigned long tk_start;
74 long tk_rtt;
75
76#ifdef RPC_DEBUG
77 unsigned short tk_pid;
78#endif
79};
80#define tk_auth tk_client->cl_auth
81#define tk_xprt tk_client->cl_xprt
82
83#define task_for_each(task, pos, head)   list_for_each(pos, head)   if ((task=list_entry(pos, struct rpc_task, u.tk_wait.list)),1)
84
85#define task_for_first(task, head)   if (!list_empty(head) &&   ((task=list_entry((head)->next, struct rpc_task, u.tk_wait.list)),1))
86
87#define alltask_for_each(task, pos, head)   list_for_each(pos, head)   if ((task=list_entry(pos, struct rpc_task, tk_task)),1)
88
89typedef void (*rpc_action)(struct rpc_task *);
90
91struct rpc_call_ops {
92 void (*rpc_call_prepare)(struct rpc_task *, void *);
93 void (*rpc_call_done)(struct rpc_task *, void *);
94 void (*rpc_release)(void *);
95};
96
97#define RPC_TASK_ASYNC 0x0001
98#define RPC_TASK_SWAPPER 0x0002
99#define RPC_TASK_CHILD 0x0008
100#define RPC_CALL_MAJORSEEN 0x0020
101#define RPC_TASK_ROOTCREDS 0x0040
102#define RPC_TASK_DYNAMIC 0x0080
103#define RPC_TASK_KILLED 0x0100
104#define RPC_TASK_SOFT 0x0200
105#define RPC_TASK_NOINTR 0x0400
106
107#define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
108#define RPC_IS_CHILD(t) ((t)->tk_flags & RPC_TASK_CHILD)
109#define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)
110#define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS)
111#define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED)
112#define RPC_DO_CALLBACK(t) ((t)->tk_callback != NULL)
113#define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT)
114#define RPC_TASK_UNINTERRUPTIBLE(t) ((t)->tk_flags & RPC_TASK_NOINTR)
115
116#define RPC_TASK_RUNNING 0
117#define RPC_TASK_QUEUED 1
118#define RPC_TASK_WAKEUP 2
119#define RPC_TASK_HAS_TIMER 3
120#define RPC_TASK_ACTIVE 4
121
122#define RPC_IS_RUNNING(t) (test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
123#define rpc_set_running(t) (set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
124#define rpc_test_and_set_running(t)   (test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate))
125#define rpc_clear_running(t)   do {   smp_mb__before_clear_bit();   clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate);   smp_mb__after_clear_bit();   } while (0)
126
127#define RPC_IS_QUEUED(t) (test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate))
128#define rpc_set_queued(t) (set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate))
129#define rpc_clear_queued(t)   do {   smp_mb__before_clear_bit();   clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate);   smp_mb__after_clear_bit();   } while (0)
130
131#define rpc_start_wakeup(t)   (test_and_set_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate) == 0)
132#define rpc_finish_wakeup(t)   do {   smp_mb__before_clear_bit();   clear_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate);   smp_mb__after_clear_bit();   } while (0)
133
134#define RPC_IS_ACTIVATED(t) (test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate))
135#define rpc_set_active(t) (set_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate))
136#define rpc_clear_active(t)   do {   smp_mb__before_clear_bit();   clear_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate);   smp_mb__after_clear_bit();   } while(0)
137
138#define RPC_PRIORITY_LOW 0
139#define RPC_PRIORITY_NORMAL 1
140#define RPC_PRIORITY_HIGH 2
141#define RPC_NR_PRIORITY (RPC_PRIORITY_HIGH+1)
142
143struct rpc_wait_queue {
144 spinlock_t lock;
145 struct list_head tasks[RPC_NR_PRIORITY];
146 unsigned long cookie;
147 unsigned char maxpriority;
148 unsigned char priority;
149 unsigned char count;
150 unsigned char nr;
151 unsigned short qlen;
152#ifdef RPC_DEBUG
153 const char * name;
154#endif
155};
156
157#define RPC_BATCH_COUNT 16
158
159#ifndef RPC_DEBUG
160#define RPC_WAITQ_INIT(var,qname) {   .lock = SPIN_LOCK_UNLOCKED,   .tasks = {   [0] = LIST_HEAD_INIT(var.tasks[0]),   [1] = LIST_HEAD_INIT(var.tasks[1]),   [2] = LIST_HEAD_INIT(var.tasks[2]),   },   }
161#else
162#define RPC_WAITQ_INIT(var,qname) {   .lock = SPIN_LOCK_UNLOCKED,   .tasks = {   [0] = LIST_HEAD_INIT(var.tasks[0]),   [1] = LIST_HEAD_INIT(var.tasks[1]),   [2] = LIST_HEAD_INIT(var.tasks[2]),   },   .name = qname,   }
163#endif
164#define RPC_WAITQ(var,qname) struct rpc_wait_queue var = RPC_WAITQ_INIT(var,qname)
165
166#define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0)
167
168struct rpc_task *rpc_new_task(struct rpc_clnt *, int flags,
169 const struct rpc_call_ops *ops, void *data);
170struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
171 const struct rpc_call_ops *ops, void *data);
172struct rpc_task *rpc_new_child(struct rpc_clnt *, struct rpc_task *parent);
173
174struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
175
176#ifdef RPC_DEBUG
177
178#endif
179
180#ifdef RPC_DEBUG
181#endif
182#endif
183