]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
55aa4f58 | 2 | * linux/include/linux/sunrpc/xprt.h |
1da177e4 LT |
3 | * |
4 | * Declarations for the RPC transport interface. | |
5 | * | |
6 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
7 | */ | |
8 | ||
9 | #ifndef _LINUX_SUNRPC_XPRT_H | |
10 | #define _LINUX_SUNRPC_XPRT_H | |
11 | ||
12 | #include <linux/uio.h> | |
13 | #include <linux/socket.h> | |
14 | #include <linux/in.h> | |
ff839970 | 15 | #include <linux/ktime.h> |
30c5116b | 16 | #include <linux/kref.h> |
1da177e4 LT |
17 | #include <linux/sunrpc/sched.h> |
18 | #include <linux/sunrpc/xdr.h> | |
7adae489 | 19 | #include <linux/sunrpc/msg_prot.h> |
1da177e4 | 20 | |
96802a09 FM |
21 | #ifdef __KERNEL__ |
22 | ||
1da177e4 LT |
23 | #define RPC_MIN_SLOT_TABLE (2U) |
24 | #define RPC_DEF_SLOT_TABLE (16U) | |
d9ba131d | 25 | #define RPC_MAX_SLOT_TABLE_LIMIT (65536U) |
88338124 | 26 | #define RPC_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE_LIMIT |
1da177e4 | 27 | |
4f4cf5ad CL |
28 | #define RPC_CWNDSHIFT (8U) |
29 | #define RPC_CWNDSCALE (1U << RPC_CWNDSHIFT) | |
30 | #define RPC_INITCWND RPC_CWNDSCALE | |
31 | #define RPC_MAXCWND(xprt) ((xprt)->max_reqs << RPC_CWNDSHIFT) | |
32 | #define RPCXPRT_CONGESTED(xprt) ((xprt)->cong >= (xprt)->cwnd) | |
33 | ||
1da177e4 LT |
34 | /* |
35 | * This describes a timeout strategy | |
36 | */ | |
37 | struct rpc_timeout { | |
38 | unsigned long to_initval, /* initial timeout */ | |
39 | to_maxval, /* max timeout */ | |
40 | to_increment; /* if !exponential */ | |
41 | unsigned int to_retries; /* max # of retries */ | |
42 | unsigned char to_exponential; | |
43 | }; | |
44 | ||
edb267a6 CL |
45 | enum rpc_display_format_t { |
46 | RPC_DISPLAY_ADDR = 0, | |
47 | RPC_DISPLAY_PORT, | |
48 | RPC_DISPLAY_PROTO, | |
fbfe3cc6 CL |
49 | RPC_DISPLAY_HEX_ADDR, |
50 | RPC_DISPLAY_HEX_PORT, | |
4417c8c4 | 51 | RPC_DISPLAY_NETID, |
edb267a6 CL |
52 | RPC_DISPLAY_MAX, |
53 | }; | |
54 | ||
529b33c6 CL |
55 | struct rpc_task; |
56 | struct rpc_xprt; | |
e99170ff | 57 | struct seq_file; |
76566773 CL |
58 | struct svc_serv; |
59 | struct net; | |
529b33c6 | 60 | |
1da177e4 LT |
61 | /* |
62 | * This describes a complete RPC request | |
63 | */ | |
64 | struct rpc_rqst { | |
65 | /* | |
66 | * This is the user-visible part | |
67 | */ | |
68 | struct rpc_xprt * rq_xprt; /* RPC client */ | |
69 | struct xdr_buf rq_snd_buf; /* send buffer */ | |
70 | struct xdr_buf rq_rcv_buf; /* recv buffer */ | |
71 | ||
72 | /* | |
73 | * This is the private part | |
74 | */ | |
75 | struct rpc_task * rq_task; /* RPC task data */ | |
a17c2153 | 76 | struct rpc_cred * rq_cred; /* Bound cred */ |
d8ed029d | 77 | __be32 rq_xid; /* request XID */ |
1da177e4 | 78 | int rq_cong; /* has incremented xprt->cong */ |
1da177e4 | 79 | u32 rq_seqno; /* gss seq no. used on req. */ |
ead5e1c2 BF |
80 | int rq_enc_pages_num; |
81 | struct page **rq_enc_pages; /* scratch pages for use by | |
82 | gss privacy code */ | |
83 | void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */ | |
1da177e4 LT |
84 | struct list_head rq_list; |
85 | ||
5a6d1db4 | 86 | void *rq_xprtdata; /* Per-xprt private data */ |
b9c5bc03 | 87 | void *rq_buffer; /* Call XDR encode buffer */ |
68778945 CL |
88 | size_t rq_callsize; |
89 | void *rq_rbuffer; /* Reply XDR decode buffer */ | |
90 | size_t rq_rcvsize; | |
d60dbb20 TM |
91 | size_t rq_xmit_bytes_sent; /* total bytes sent */ |
92 | size_t rq_reply_bytes_recvd; /* total reply bytes */ | |
93 | /* received */ | |
02107148 | 94 | |
1da177e4 LT |
95 | struct xdr_buf rq_private_buf; /* The receive buffer |
96 | * used in the softirq. | |
97 | */ | |
98 | unsigned long rq_majortimeo; /* major timeout alarm */ | |
99 | unsigned long rq_timeout; /* Current timeout value */ | |
d60dbb20 | 100 | ktime_t rq_rtt; /* round-trip time */ |
1da177e4 | 101 | unsigned int rq_retries; /* # of retries */ |
7c1d71cf TM |
102 | unsigned int rq_connect_cookie; |
103 | /* A cookie used to track the | |
104 | state of the transport | |
105 | connection */ | |
1da177e4 LT |
106 | |
107 | /* | |
108 | * Partial send handling | |
109 | */ | |
1da177e4 LT |
110 | u32 rq_bytes_sent; /* Bytes we have sent */ |
111 | ||
ff839970 | 112 | ktime_t rq_xtime; /* transmit time stamp */ |
1da177e4 | 113 | int rq_ntrans; |
56632b5b | 114 | |
9e00abc3 | 115 | #if defined(CONFIG_SUNRPC_BACKCHANNEL) |
56632b5b RL |
116 | struct list_head rq_bc_list; /* Callback service list */ |
117 | unsigned long rq_bc_pa_state; /* Backchannel prealloc state */ | |
118 | struct list_head rq_bc_pa_list; /* Backchannel prealloc list */ | |
9e00abc3 | 119 | #endif /* CONFIG_SUNRPC_BACKCHANEL */ |
1da177e4 LT |
120 | }; |
121 | #define rq_svec rq_snd_buf.head | |
122 | #define rq_slen rq_snd_buf.len | |
123 | ||
a246b010 | 124 | struct rpc_xprt_ops { |
470056c2 | 125 | void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize); |
43cedbf0 | 126 | int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); |
49e9a890 | 127 | void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); |
f39c1bfb | 128 | void (*alloc_slot)(struct rpc_xprt *xprt, struct rpc_task *task); |
bbf7c1dd | 129 | void (*rpcbind)(struct rpc_task *task); |
92200412 | 130 | void (*set_port)(struct rpc_xprt *xprt, unsigned short port); |
1b092092 | 131 | void (*connect)(struct rpc_xprt *xprt, struct rpc_task *task); |
5fe6eaa1 | 132 | int (*buf_alloc)(struct rpc_task *task); |
3435c74a | 133 | void (*buf_free)(struct rpc_task *task); |
a246b010 | 134 | int (*send_request)(struct rpc_task *task); |
fe3aca29 | 135 | void (*set_retrans_timeout)(struct rpc_task *task); |
6a24dfb6 | 136 | void (*timer)(struct rpc_xprt *xprt, struct rpc_task *task); |
a58dd398 | 137 | void (*release_request)(struct rpc_task *task); |
a246b010 CL |
138 | void (*close)(struct rpc_xprt *xprt); |
139 | void (*destroy)(struct rpc_xprt *xprt); | |
262ca07d | 140 | void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq); |
d67fa4d8 JL |
141 | int (*enable_swap)(struct rpc_xprt *xprt); |
142 | void (*disable_swap)(struct rpc_xprt *xprt); | |
4a068258 | 143 | void (*inject_disconnect)(struct rpc_xprt *xprt); |
42e5c3e2 CL |
144 | int (*bc_setup)(struct rpc_xprt *xprt, |
145 | unsigned int min_reqs); | |
76566773 | 146 | int (*bc_up)(struct svc_serv *serv, struct net *net); |
6b26cc8c | 147 | size_t (*bc_maxpayload)(struct rpc_xprt *xprt); |
42e5c3e2 CL |
148 | void (*bc_free_rqst)(struct rpc_rqst *rqst); |
149 | void (*bc_destroy)(struct rpc_xprt *xprt, | |
150 | unsigned int max_reqs); | |
a246b010 | 151 | }; |
1da177e4 | 152 | |
f300baba AB |
153 | /* |
154 | * RPC transport identifiers | |
155 | * | |
156 | * To preserve compatibility with the historical use of raw IP protocol | |
157 | * id's for transport selection, UDP and TCP identifiers are specified | |
158 | * with the previous values. No such restriction exists for new transports, | |
159 | * except that they may not collide with these values (17 and 6, | |
160 | * respectively). | |
161 | */ | |
162 | #define XPRT_TRANSPORT_BC (1 << 31) | |
163 | enum xprt_transports { | |
164 | XPRT_TRANSPORT_UDP = IPPROTO_UDP, | |
165 | XPRT_TRANSPORT_TCP = IPPROTO_TCP, | |
166 | XPRT_TRANSPORT_BC_TCP = IPPROTO_TCP | XPRT_TRANSPORT_BC, | |
176e21ee | 167 | XPRT_TRANSPORT_RDMA = 256, |
94684319 | 168 | XPRT_TRANSPORT_BC_RDMA = XPRT_TRANSPORT_RDMA | XPRT_TRANSPORT_BC, |
176e21ee | 169 | XPRT_TRANSPORT_LOCAL = 257, |
f300baba AB |
170 | }; |
171 | ||
1da177e4 | 172 | struct rpc_xprt { |
30c5116b | 173 | struct kref kref; /* Reference count */ |
a246b010 | 174 | struct rpc_xprt_ops * ops; /* transport methods */ |
1da177e4 | 175 | |
ba7392bb | 176 | const struct rpc_timeout *timeout; /* timeout parms */ |
c4efcb1d CL |
177 | struct sockaddr_storage addr; /* server address */ |
178 | size_t addrlen; /* size of server address */ | |
1da177e4 LT |
179 | int prot; /* IP protocol */ |
180 | ||
181 | unsigned long cong; /* current congestion */ | |
182 | unsigned long cwnd; /* congestion window */ | |
183 | ||
1da177e4 LT |
184 | size_t max_payload; /* largest RPC payload size, |
185 | in bytes */ | |
808012fb CL |
186 | unsigned int tsh_size; /* size of transport specific |
187 | header */ | |
1da177e4 | 188 | |
4a68179d | 189 | struct rpc_wait_queue binding; /* requests waiting on rpcbind */ |
1da177e4 | 190 | struct rpc_wait_queue sending; /* requests waiting to send */ |
1da177e4 LT |
191 | struct rpc_wait_queue pending; /* requests in flight */ |
192 | struct rpc_wait_queue backlog; /* waiting for slot */ | |
193 | struct list_head free; /* free slots */ | |
d9ba131d TM |
194 | unsigned int max_reqs; /* max number of slots */ |
195 | unsigned int min_reqs; /* min number of slots */ | |
196 | atomic_t num_reqs; /* total slots */ | |
2226feb6 | 197 | unsigned long state; /* transport state */ |
d19751e7 | 198 | unsigned char resvport : 1; /* use a reserved port */ |
8e228133 | 199 | atomic_t swapper; /* we're swapping over this |
a564b8f0 | 200 | transport */ |
a509050b | 201 | unsigned int bind_index; /* bind function index */ |
1da177e4 | 202 | |
80b14d5e TM |
203 | /* |
204 | * Multipath | |
205 | */ | |
206 | struct list_head xprt_switch; | |
207 | ||
1da177e4 | 208 | /* |
55aa4f58 | 209 | * Connection of transports |
1da177e4 | 210 | */ |
a8ce4a8f | 211 | unsigned long bind_timeout, |
03bf4b70 | 212 | reestablish_timeout; |
7c1d71cf TM |
213 | unsigned int connect_cookie; /* A cookie that gets bumped |
214 | every time the transport | |
215 | is reconnected */ | |
03bf4b70 | 216 | |
1da177e4 | 217 | /* |
55aa4f58 | 218 | * Disconnection of idle transports |
1da177e4 LT |
219 | */ |
220 | struct work_struct task_cleanup; | |
221 | struct timer_list timer; | |
03bf4b70 | 222 | unsigned long last_used, |
3851f1cd TM |
223 | idle_timeout, |
224 | max_reconnect_timeout; | |
1da177e4 LT |
225 | |
226 | /* | |
227 | * Send stuff | |
228 | */ | |
4a0f8c04 | 229 | spinlock_t transport_lock; /* lock transport info */ |
5dc07727 | 230 | spinlock_t reserve_lock; /* lock slot table */ |
e744cf2e | 231 | u32 xid; /* Next XID value to use */ |
1da177e4 | 232 | struct rpc_task * snd_task; /* Task blocked in send */ |
4cfc7e60 | 233 | struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ |
9e00abc3 | 234 | #if defined(CONFIG_SUNRPC_BACKCHANNEL) |
56632b5b RL |
235 | struct svc_serv *bc_serv; /* The RPC service which will */ |
236 | /* process the callback */ | |
0d2a970d TM |
237 | int bc_alloc_count; /* Total number of preallocs */ |
238 | atomic_t bc_free_slots; | |
56632b5b RL |
239 | spinlock_t bc_pa_lock; /* Protects the preallocated |
240 | * items */ | |
241 | struct list_head bc_pa_list; /* List of preallocated | |
242 | * backchannel rpc_rqst's */ | |
9e00abc3 | 243 | #endif /* CONFIG_SUNRPC_BACKCHANNEL */ |
1da177e4 LT |
244 | struct list_head recv; |
245 | ||
262ca07d CL |
246 | struct { |
247 | unsigned long bind_count, /* total number of binds */ | |
248 | connect_count, /* total number of connects */ | |
249 | connect_start, /* connect start timestamp */ | |
250 | connect_time, /* jiffies waiting for connect */ | |
251 | sends, /* how many complete requests */ | |
252 | recvs, /* how many complete requests */ | |
15a45206 AA |
253 | bad_xids, /* lookup_rqst didn't find XID */ |
254 | max_slots; /* max rpc_slots used */ | |
262ca07d CL |
255 | |
256 | unsigned long long req_u, /* average requests on the wire */ | |
15a45206 AA |
257 | bklog_u, /* backlog queue utilization */ |
258 | sending_u, /* send q utilization */ | |
259 | pending_u; /* pend q utilization */ | |
262ca07d | 260 | } stat; |
1da177e4 | 261 | |
37aa2133 | 262 | struct net *xprt_net; |
4e0038b6 | 263 | const char *servername; |
b454ae90 | 264 | const char *address_strings[RPC_DISPLAY_MAX]; |
388f0c77 JL |
265 | #if IS_ENABLED(CONFIG_SUNRPC_DEBUG) |
266 | struct dentry *debugfs; /* debugfs directory */ | |
4a068258 | 267 | atomic_t inject_disconnect; |
388f0c77 | 268 | #endif |
fda1bfef | 269 | struct rcu_head rcu; |
1da177e4 LT |
270 | }; |
271 | ||
9e00abc3 | 272 | #if defined(CONFIG_SUNRPC_BACKCHANNEL) |
56632b5b RL |
273 | /* |
274 | * Backchannel flags | |
275 | */ | |
276 | #define RPC_BC_PA_IN_USE 0x0001 /* Preallocated backchannel */ | |
277 | /* buffer in use */ | |
9e00abc3 | 278 | #endif /* CONFIG_SUNRPC_BACKCHANNEL */ |
56632b5b | 279 | |
9e00abc3 | 280 | #if defined(CONFIG_SUNRPC_BACKCHANNEL) |
55ae1aab RL |
281 | static inline int bc_prealloc(struct rpc_rqst *req) |
282 | { | |
283 | return test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state); | |
284 | } | |
285 | #else | |
286 | static inline int bc_prealloc(struct rpc_rqst *req) | |
287 | { | |
288 | return 0; | |
289 | } | |
9e00abc3 | 290 | #endif /* CONFIG_SUNRPC_BACKCHANNEL */ |
55ae1aab | 291 | |
b7993ceb | 292 | #define XPRT_CREATE_INFINITE_SLOTS (1U) |
33d90ac0 | 293 | #define XPRT_CREATE_NO_IDLE_TIMEOUT (1U << 1) |
b7993ceb | 294 | |
3c341b0b | 295 | struct xprt_create { |
4fa016eb | 296 | int ident; /* XPRT_TRANSPORT identifier */ |
9a23e332 | 297 | struct net * net; |
d3bc9a1d | 298 | struct sockaddr * srcaddr; /* optional local address */ |
96802a09 FM |
299 | struct sockaddr * dstaddr; /* remote peer address */ |
300 | size_t addrlen; | |
4e0038b6 | 301 | const char *servername; |
f300baba | 302 | struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ |
39a9beab | 303 | struct rpc_xprt_switch *bc_xps; |
b7993ceb | 304 | unsigned int flags; |
96802a09 | 305 | }; |
1da177e4 | 306 | |
81c098af TT |
307 | struct xprt_class { |
308 | struct list_head list; | |
4fa016eb | 309 | int ident; /* XPRT_TRANSPORT identifier */ |
3c341b0b | 310 | struct rpc_xprt * (*setup)(struct xprt_create *); |
81c098af TT |
311 | struct module *owner; |
312 | char name[32]; | |
313 | }; | |
314 | ||
55aa4f58 CL |
315 | /* |
316 | * Generic internal transport functions | |
317 | */ | |
3c341b0b | 318 | struct rpc_xprt *xprt_create_transport(struct xprt_create *args); |
55aa4f58 CL |
319 | void xprt_connect(struct rpc_task *task); |
320 | void xprt_reserve(struct rpc_task *task); | |
ba60eb25 | 321 | void xprt_retry_reserve(struct rpc_task *task); |
43cedbf0 TM |
322 | int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task); |
323 | int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); | |
f39c1bfb TM |
324 | void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); |
325 | void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task); | |
90051ea7 | 326 | bool xprt_prepare_transmit(struct rpc_task *task); |
55aa4f58 | 327 | void xprt_transmit(struct rpc_task *task); |
e0ab53de | 328 | void xprt_end_transmit(struct rpc_task *task); |
1da177e4 | 329 | int xprt_adjust_timeout(struct rpc_rqst *req); |
49e9a890 CL |
330 | void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task); |
331 | void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); | |
55aa4f58 | 332 | void xprt_release(struct rpc_task *task); |
30c5116b | 333 | struct rpc_xprt * xprt_get(struct rpc_xprt *xprt); |
6b6ca86b | 334 | void xprt_put(struct rpc_xprt *xprt); |
d9ba131d TM |
335 | struct rpc_xprt * xprt_alloc(struct net *net, size_t size, |
336 | unsigned int num_prealloc, | |
337 | unsigned int max_req); | |
e204e621 | 338 | void xprt_free(struct rpc_xprt *); |
55aa4f58 | 339 | |
d8ed029d | 340 | static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p) |
808012fb CL |
341 | { |
342 | return p + xprt->tsh_size; | |
343 | } | |
344 | ||
d67fa4d8 JL |
345 | static inline int |
346 | xprt_enable_swap(struct rpc_xprt *xprt) | |
347 | { | |
348 | return xprt->ops->enable_swap(xprt); | |
349 | } | |
350 | ||
351 | static inline void | |
352 | xprt_disable_swap(struct rpc_xprt *xprt) | |
353 | { | |
354 | xprt->ops->disable_swap(xprt); | |
355 | } | |
356 | ||
55aa4f58 CL |
357 | /* |
358 | * Transport switch helper functions | |
359 | */ | |
81c098af TT |
360 | int xprt_register_transport(struct xprt_class *type); |
361 | int xprt_unregister_transport(struct xprt_class *type); | |
441e3e24 | 362 | int xprt_load_transport(const char *); |
fe3aca29 CL |
363 | void xprt_set_retrans_timeout_def(struct rpc_task *task); |
364 | void xprt_set_retrans_timeout_rtt(struct rpc_task *task); | |
55aa4f58 | 365 | void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status); |
b6ddf64f | 366 | void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action); |
c7b2cae8 | 367 | void xprt_write_space(struct rpc_xprt *xprt); |
6a24dfb6 | 368 | void xprt_adjust_cwnd(struct rpc_xprt *xprt, struct rpc_task *task, int result); |
d8ed029d | 369 | struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid); |
1570c1e4 | 370 | void xprt_complete_rqst(struct rpc_task *task, int copied); |
a58dd398 | 371 | void xprt_release_rqst_cong(struct rpc_task *task); |
62da3b24 | 372 | void xprt_disconnect_done(struct rpc_xprt *xprt); |
66af1e55 | 373 | void xprt_force_disconnect(struct rpc_xprt *xprt); |
7c1d71cf | 374 | void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie); |
55aa4f58 | 375 | |
718ba5b8 TM |
376 | bool xprt_lock_connect(struct rpc_xprt *, struct rpc_task *, void *); |
377 | void xprt_unlock_connect(struct rpc_xprt *, void *); | |
378 | ||
2226feb6 CL |
379 | /* |
380 | * Reserved bit positions in xprt->state | |
381 | */ | |
382 | #define XPRT_LOCKED (0) | |
383 | #define XPRT_CONNECTED (1) | |
384 | #define XPRT_CONNECTING (2) | |
632e3bdc | 385 | #define XPRT_CLOSE_WAIT (3) |
ec739ef0 | 386 | #define XPRT_BOUND (4) |
4a68179d | 387 | #define XPRT_BINDING (5) |
3b948ae5 | 388 | #define XPRT_CLOSING (6) |
ba60eb25 | 389 | #define XPRT_CONGESTED (9) |
2226feb6 CL |
390 | |
391 | static inline void xprt_set_connected(struct rpc_xprt *xprt) | |
392 | { | |
393 | set_bit(XPRT_CONNECTED, &xprt->state); | |
394 | } | |
395 | ||
396 | static inline void xprt_clear_connected(struct rpc_xprt *xprt) | |
397 | { | |
398 | clear_bit(XPRT_CONNECTED, &xprt->state); | |
399 | } | |
400 | ||
401 | static inline int xprt_connected(struct rpc_xprt *xprt) | |
402 | { | |
403 | return test_bit(XPRT_CONNECTED, &xprt->state); | |
404 | } | |
405 | ||
406 | static inline int xprt_test_and_set_connected(struct rpc_xprt *xprt) | |
407 | { | |
408 | return test_and_set_bit(XPRT_CONNECTED, &xprt->state); | |
409 | } | |
410 | ||
411 | static inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt) | |
412 | { | |
413 | return test_and_clear_bit(XPRT_CONNECTED, &xprt->state); | |
414 | } | |
415 | ||
416 | static inline void xprt_clear_connecting(struct rpc_xprt *xprt) | |
417 | { | |
4e857c58 | 418 | smp_mb__before_atomic(); |
2226feb6 | 419 | clear_bit(XPRT_CONNECTING, &xprt->state); |
4e857c58 | 420 | smp_mb__after_atomic(); |
2226feb6 CL |
421 | } |
422 | ||
423 | static inline int xprt_connecting(struct rpc_xprt *xprt) | |
424 | { | |
425 | return test_bit(XPRT_CONNECTING, &xprt->state); | |
426 | } | |
427 | ||
428 | static inline int xprt_test_and_set_connecting(struct rpc_xprt *xprt) | |
429 | { | |
430 | return test_and_set_bit(XPRT_CONNECTING, &xprt->state); | |
431 | } | |
1da177e4 | 432 | |
ec739ef0 CL |
433 | static inline void xprt_set_bound(struct rpc_xprt *xprt) |
434 | { | |
435 | test_and_set_bit(XPRT_BOUND, &xprt->state); | |
436 | } | |
437 | ||
438 | static inline int xprt_bound(struct rpc_xprt *xprt) | |
439 | { | |
440 | return test_bit(XPRT_BOUND, &xprt->state); | |
441 | } | |
442 | ||
443 | static inline void xprt_clear_bound(struct rpc_xprt *xprt) | |
444 | { | |
445 | clear_bit(XPRT_BOUND, &xprt->state); | |
446 | } | |
447 | ||
4a68179d CL |
448 | static inline void xprt_clear_binding(struct rpc_xprt *xprt) |
449 | { | |
4e857c58 | 450 | smp_mb__before_atomic(); |
4a68179d | 451 | clear_bit(XPRT_BINDING, &xprt->state); |
4e857c58 | 452 | smp_mb__after_atomic(); |
4a68179d CL |
453 | } |
454 | ||
455 | static inline int xprt_test_and_set_binding(struct rpc_xprt *xprt) | |
456 | { | |
457 | return test_and_set_bit(XPRT_BINDING, &xprt->state); | |
458 | } | |
459 | ||
4a068258 CL |
460 | #if IS_ENABLED(CONFIG_SUNRPC_DEBUG) |
461 | extern unsigned int rpc_inject_disconnect; | |
462 | static inline void xprt_inject_disconnect(struct rpc_xprt *xprt) | |
463 | { | |
464 | if (!rpc_inject_disconnect) | |
465 | return; | |
466 | if (atomic_dec_return(&xprt->inject_disconnect)) | |
467 | return; | |
468 | atomic_set(&xprt->inject_disconnect, rpc_inject_disconnect); | |
469 | xprt->ops->inject_disconnect(xprt); | |
470 | } | |
471 | #else | |
472 | static inline void xprt_inject_disconnect(struct rpc_xprt *xprt) | |
473 | { | |
474 | } | |
475 | #endif | |
476 | ||
1da177e4 LT |
477 | #endif /* __KERNEL__*/ |
478 | ||
479 | #endif /* _LINUX_SUNRPC_XPRT_H */ |