1 /* AF_RXRPC internal definitions
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <rxrpc/packet.h>
15 #define CHECK_SLAB_OKAY(X) \
16 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
17 (POISON_FREE << 8 | POISON_FREE))
19 #define CHECK_SLAB_OKAY(X) do {} while(0)
22 #define FCRYPT_BSIZE 8
28 } __attribute__((aligned(8)));
30 #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS))
31 #define rxrpc_queue_delayed_work(WS,D) \
32 queue_delayed_work(rxrpc_workqueue, (WS), (D))
34 #define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor)
35 #define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor)
38 * sk_state for RxRPC sockets
41 RXRPC_UNCONNECTED
= 0,
42 RXRPC_CLIENT_BOUND
, /* client local address bound */
43 RXRPC_CLIENT_CONNECTED
, /* client is connected */
44 RXRPC_SERVER_BOUND
, /* server local address bound */
45 RXRPC_SERVER_LISTENING
, /* server listening for connections */
46 RXRPC_CLOSE
, /* socket is being closed */
50 * RxRPC socket definition
53 /* WARNING: sk has to be the first member */
55 rxrpc_interceptor_t interceptor
; /* kernel service Rx interceptor function */
56 struct rxrpc_local
*local
; /* local endpoint */
57 struct rxrpc_transport
*trans
; /* transport handler */
58 struct rxrpc_conn_bundle
*bundle
; /* virtual connection bundle */
59 struct rxrpc_connection
*conn
; /* exclusive virtual connection */
60 struct list_head listen_link
; /* link in the local endpoint's listen list */
61 struct list_head secureq
; /* calls awaiting connection security clearance */
62 struct list_head acceptq
; /* calls awaiting acceptance */
63 struct key
*key
; /* security for this socket */
64 struct key
*securities
; /* list of server security descriptors */
65 struct rb_root calls
; /* outstanding calls on this socket */
67 #define RXRPC_SOCK_EXCLUSIVE_CONN 1 /* exclusive connection for a client socket */
68 rwlock_t call_lock
; /* lock for calls */
69 u32 min_sec_level
; /* minimum security level */
70 #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
71 struct sockaddr_rxrpc srx
; /* local address */
72 sa_family_t proto
; /* protocol created with */
73 __be16 service_id
; /* service ID of local/remote service */
76 #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
79 * RxRPC socket buffer private variables
80 * - max 48 bytes (struct sk_buff::cb)
82 struct rxrpc_skb_priv
{
83 struct rxrpc_call
*call
; /* call with which associated */
84 unsigned long resend_at
; /* time in jiffies at which to resend */
86 unsigned offset
; /* offset into buffer of next read */
87 int remain
; /* amount of space remaining for next write */
88 u32 error
; /* network error code */
89 bool need_resend
; /* T if needs resending */
92 struct rxrpc_header hdr
; /* RxRPC packet header from this packet */
95 #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
98 RXRPC_CMD_SEND_DATA
, /* send data message */
99 RXRPC_CMD_SEND_ABORT
, /* request abort generation */
100 RXRPC_CMD_ACCEPT
, /* [server] accept incoming call */
101 RXRPC_CMD_REJECT_BUSY
, /* [server] reject a call as busy */
105 * RxRPC security module interface
107 struct rxrpc_security
{
108 struct module
*owner
; /* providing module */
109 struct list_head link
; /* link in master list */
110 const char *name
; /* name of this service */
111 u8 security_index
; /* security type provided */
113 /* initialise a connection's security */
114 int (*init_connection_security
)(struct rxrpc_connection
*);
116 /* prime a connection's packet security */
117 void (*prime_packet_security
)(struct rxrpc_connection
*);
119 /* impose security on a packet */
120 int (*secure_packet
)(const struct rxrpc_call
*,
125 /* verify the security on a received packet */
126 int (*verify_packet
)(const struct rxrpc_call
*, struct sk_buff
*,
129 /* issue a challenge */
130 int (*issue_challenge
)(struct rxrpc_connection
*);
132 /* respond to a challenge */
133 int (*respond_to_challenge
)(struct rxrpc_connection
*,
137 /* verify a response */
138 int (*verify_response
)(struct rxrpc_connection
*,
142 /* clear connection security */
143 void (*clear
)(struct rxrpc_connection
*);
147 * RxRPC local transport endpoint definition
148 * - matched by local port, address and protocol type
151 struct socket
*socket
; /* my UDP socket */
152 struct work_struct destroyer
; /* endpoint destroyer */
153 struct work_struct acceptor
; /* incoming call processor */
154 struct work_struct rejecter
; /* packet reject writer */
155 struct list_head services
; /* services listening on this endpoint */
156 struct list_head link
; /* link in endpoint list */
157 struct rw_semaphore defrag_sem
; /* control re-enablement of IP DF bit */
158 struct sk_buff_head accept_queue
; /* incoming calls awaiting acceptance */
159 struct sk_buff_head reject_queue
; /* packets awaiting rejection */
160 spinlock_t lock
; /* access lock */
161 rwlock_t services_lock
; /* lock for services list */
163 int debug_id
; /* debug ID for printks */
164 volatile char error_rcvd
; /* T if received ICMP error outstanding */
165 struct sockaddr_rxrpc srx
; /* local address */
169 * RxRPC remote transport endpoint definition
170 * - matched by remote port, address and protocol type
171 * - holds the connection ID counter for connections between the two endpoints
174 struct work_struct destroyer
; /* peer destroyer */
175 struct list_head link
; /* link in master peer list */
176 struct list_head error_targets
; /* targets for net error distribution */
177 spinlock_t lock
; /* access lock */
179 unsigned if_mtu
; /* interface MTU for this peer */
180 unsigned mtu
; /* network MTU for this peer */
181 unsigned maxdata
; /* data size (MTU - hdrsize) */
182 unsigned short hdrsize
; /* header size (IP + UDP + RxRPC) */
183 int debug_id
; /* debug ID for printks */
184 int net_error
; /* network error distributed */
185 struct sockaddr_rxrpc srx
; /* remote address */
187 /* calculated RTT cache */
188 #define RXRPC_RTT_CACHE_SIZE 32
189 suseconds_t rtt
; /* current RTT estimate (in uS) */
190 unsigned rtt_point
; /* next entry at which to insert */
191 unsigned rtt_usage
; /* amount of cache actually used */
192 suseconds_t rtt_cache
[RXRPC_RTT_CACHE_SIZE
]; /* calculated RTT cache */
196 * RxRPC point-to-point transport / connection manager definition
197 * - handles a bundle of connections between two endpoints
198 * - matched by { local, peer }
200 struct rxrpc_transport
{
201 struct rxrpc_local
*local
; /* local transport endpoint */
202 struct rxrpc_peer
*peer
; /* remote transport endpoint */
203 struct work_struct error_handler
; /* network error distributor */
204 struct rb_root bundles
; /* client connection bundles on this transport */
205 struct rb_root client_conns
; /* client connections on this transport */
206 struct rb_root server_conns
; /* server connections on this transport */
207 struct list_head link
; /* link in master session list */
208 struct sk_buff_head error_queue
; /* error packets awaiting processing */
209 time_t put_time
; /* time at which to reap */
210 spinlock_t client_lock
; /* client connection allocation lock */
211 rwlock_t conn_lock
; /* lock for active/dead connections */
213 int debug_id
; /* debug ID for printks */
214 unsigned int conn_idcounter
; /* connection ID counter (client) */
218 * RxRPC client connection bundle
219 * - matched by { transport, service_id, key }
221 struct rxrpc_conn_bundle
{
222 struct rb_node node
; /* node in transport's lookup tree */
223 struct list_head unused_conns
; /* unused connections in this bundle */
224 struct list_head avail_conns
; /* available connections in this bundle */
225 struct list_head busy_conns
; /* busy connections in this bundle */
226 struct key
*key
; /* security for this bundle */
227 wait_queue_head_t chanwait
; /* wait for channel to become available */
229 int debug_id
; /* debug ID for printks */
230 unsigned short num_conns
; /* number of connections in this bundle */
231 __be16 service_id
; /* service ID */
232 u8 security_ix
; /* security type */
236 * RxRPC connection definition
237 * - matched by { transport, service_id, conn_id, direction, key }
238 * - each connection can only handle four simultaneous calls
240 struct rxrpc_connection
{
241 struct rxrpc_transport
*trans
; /* transport session */
242 struct rxrpc_conn_bundle
*bundle
; /* connection bundle (client) */
243 struct work_struct processor
; /* connection event processor */
244 struct rb_node node
; /* node in transport's lookup tree */
245 struct list_head link
; /* link in master connection list */
246 struct list_head bundle_link
; /* link in bundle */
247 struct rb_root calls
; /* calls on this connection */
248 struct sk_buff_head rx_queue
; /* received conn-level packets */
249 struct rxrpc_call
*channels
[RXRPC_MAXCALLS
]; /* channels (active calls) */
250 struct rxrpc_security
*security
; /* applied security module */
251 struct key
*key
; /* security for this connection (client) */
252 struct key
*server_key
; /* security for this service */
253 struct crypto_blkcipher
*cipher
; /* encryption handle */
254 struct rxrpc_crypt csum_iv
; /* packet checksum base */
255 unsigned long events
;
256 #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */
257 time_t put_time
; /* time at which to reap */
258 rwlock_t lock
; /* access lock */
259 spinlock_t state_lock
; /* state-change lock */
261 u32 real_conn_id
; /* connection ID (host-endian) */
262 enum { /* current state of connection */
263 RXRPC_CONN_UNUSED
, /* - connection not yet attempted */
264 RXRPC_CONN_CLIENT
, /* - client connection */
265 RXRPC_CONN_SERVER_UNSECURED
, /* - server unsecured connection */
266 RXRPC_CONN_SERVER_CHALLENGING
, /* - server challenging for security */
267 RXRPC_CONN_SERVER
, /* - server secured connection */
268 RXRPC_CONN_REMOTELY_ABORTED
, /* - conn aborted by peer */
269 RXRPC_CONN_LOCALLY_ABORTED
, /* - conn aborted locally */
270 RXRPC_CONN_NETWORK_ERROR
, /* - conn terminated by network error */
272 int error
; /* error code for local abort */
273 int debug_id
; /* debug ID for printks */
274 unsigned call_counter
; /* call ID counter */
275 atomic_t serial
; /* packet serial number counter */
276 atomic_t hi_serial
; /* highest serial number received */
277 u8 avail_calls
; /* number of calls available */
278 u8 size_align
; /* data size alignment (for security) */
279 u8 header_size
; /* rxrpc + security header size */
280 u8 security_size
; /* security header size */
281 u32 security_level
; /* security level negotiated */
282 u32 security_nonce
; /* response re-use preventer */
284 /* the following are all in net order */
285 __be32 epoch
; /* epoch of this connection */
286 __be32 cid
; /* connection ID */
287 __be16 service_id
; /* service ID */
288 u8 security_ix
; /* security type */
289 u8 in_clientflag
; /* RXRPC_CLIENT_INITIATED if we are server */
290 u8 out_clientflag
; /* RXRPC_CLIENT_INITIATED if we are client */
294 * RxRPC call definition
295 * - matched by { connection, call_id }
298 struct rxrpc_connection
*conn
; /* connection carrying call */
299 struct rxrpc_sock
*socket
; /* socket responsible */
300 struct timer_list lifetimer
; /* lifetime remaining on call */
301 struct timer_list deadspan
; /* reap timer for re-ACK'ing, etc */
302 struct timer_list ack_timer
; /* ACK generation timer */
303 struct timer_list resend_timer
; /* Tx resend timer */
304 struct work_struct destroyer
; /* call destroyer */
305 struct work_struct processor
; /* packet processor and ACK generator */
306 struct list_head link
; /* link in master call list */
307 struct list_head error_link
; /* link in error distribution list */
308 struct list_head accept_link
; /* calls awaiting acceptance */
309 struct rb_node sock_node
; /* node in socket call tree */
310 struct rb_node conn_node
; /* node in connection call tree */
311 struct sk_buff_head rx_queue
; /* received packets */
312 struct sk_buff_head rx_oos_queue
; /* packets received out of sequence */
313 struct sk_buff
*tx_pending
; /* Tx socket buffer being filled */
314 wait_queue_head_t tx_waitq
; /* wait for Tx window space to become available */
315 unsigned long user_call_ID
; /* user-defined call ID */
316 unsigned long creation_jif
; /* time of call creation */
318 #define RXRPC_CALL_RELEASED 0 /* call has been released - no more message to userspace */
319 #define RXRPC_CALL_TERMINAL_MSG 1 /* call has given the socket its final message */
320 #define RXRPC_CALL_RCVD_LAST 2 /* all packets received */
321 #define RXRPC_CALL_RUN_RTIMER 3 /* Tx resend timer started */
322 #define RXRPC_CALL_TX_SOFT_ACK 4 /* sent some soft ACKs */
323 #define RXRPC_CALL_PROC_BUSY 5 /* the processor is busy */
324 #define RXRPC_CALL_INIT_ACCEPT 6 /* acceptance was initiated */
325 #define RXRPC_CALL_HAS_USERID 7 /* has a user ID attached */
326 #define RXRPC_CALL_EXPECT_OOS 8 /* expect out of sequence packets */
327 unsigned long events
;
328 #define RXRPC_CALL_RCVD_ACKALL 0 /* ACKALL or reply received */
329 #define RXRPC_CALL_RCVD_BUSY 1 /* busy packet received */
330 #define RXRPC_CALL_RCVD_ABORT 2 /* abort packet received */
331 #define RXRPC_CALL_RCVD_ERROR 3 /* network error received */
332 #define RXRPC_CALL_ACK_FINAL 4 /* need to generate final ACK (and release call) */
333 #define RXRPC_CALL_ACK 5 /* need to generate ACK */
334 #define RXRPC_CALL_REJECT_BUSY 6 /* need to generate busy message */
335 #define RXRPC_CALL_ABORT 7 /* need to generate abort */
336 #define RXRPC_CALL_CONN_ABORT 8 /* local connection abort generated */
337 #define RXRPC_CALL_RESEND_TIMER 9 /* Tx resend timer expired */
338 #define RXRPC_CALL_RESEND 10 /* Tx resend required */
339 #define RXRPC_CALL_DRAIN_RX_OOS 11 /* drain the Rx out of sequence queue */
340 #define RXRPC_CALL_LIFE_TIMER 12 /* call's lifetimer ran out */
341 #define RXRPC_CALL_ACCEPTED 13 /* incoming call accepted by userspace app */
342 #define RXRPC_CALL_SECURED 14 /* incoming call's connection is now secure */
343 #define RXRPC_CALL_POST_ACCEPT 15 /* need to post an "accept?" message to the app */
344 #define RXRPC_CALL_RELEASE 16 /* need to release the call's resources */
347 rwlock_t state_lock
; /* lock for state transition */
349 atomic_t sequence
; /* Tx data packet sequence counter */
350 u32 abort_code
; /* local/remote abort code */
351 enum { /* current state of call */
352 RXRPC_CALL_CLIENT_SEND_REQUEST
, /* - client sending request phase */
353 RXRPC_CALL_CLIENT_AWAIT_REPLY
, /* - client awaiting reply */
354 RXRPC_CALL_CLIENT_RECV_REPLY
, /* - client receiving reply phase */
355 RXRPC_CALL_CLIENT_FINAL_ACK
, /* - client sending final ACK phase */
356 RXRPC_CALL_SERVER_SECURING
, /* - server securing request connection */
357 RXRPC_CALL_SERVER_ACCEPTING
, /* - server accepting request */
358 RXRPC_CALL_SERVER_RECV_REQUEST
, /* - server receiving request */
359 RXRPC_CALL_SERVER_ACK_REQUEST
, /* - server pending ACK of request */
360 RXRPC_CALL_SERVER_SEND_REPLY
, /* - server sending reply */
361 RXRPC_CALL_SERVER_AWAIT_ACK
, /* - server awaiting final ACK */
362 RXRPC_CALL_COMPLETE
, /* - call completed */
363 RXRPC_CALL_SERVER_BUSY
, /* - call rejected by busy server */
364 RXRPC_CALL_REMOTELY_ABORTED
, /* - call aborted by peer */
365 RXRPC_CALL_LOCALLY_ABORTED
, /* - call aborted locally on error or close */
366 RXRPC_CALL_NETWORK_ERROR
, /* - call terminated by network error */
367 RXRPC_CALL_DEAD
, /* - call is dead */
369 int debug_id
; /* debug ID for printks */
370 u8 channel
; /* connection channel occupied by this call */
372 /* transmission-phase ACK management */
373 u8 acks_head
; /* offset into window of first entry */
374 u8 acks_tail
; /* offset into window of last entry */
375 u8 acks_winsz
; /* size of un-ACK'd window */
376 u8 acks_unacked
; /* lowest unacked packet in last ACK received */
377 int acks_latest
; /* serial number of latest ACK received */
378 rxrpc_seq_t acks_hard
; /* highest definitively ACK'd msg seq */
379 unsigned long *acks_window
; /* sent packet window
380 * - elements are pointers with LSB set if ACK'd
383 /* receive-phase ACK management */
384 rxrpc_seq_t rx_data_expect
; /* next data seq ID expected to be received */
385 rxrpc_seq_t rx_data_post
; /* next data seq ID expected to be posted */
386 rxrpc_seq_t rx_data_recv
; /* last data seq ID encountered by recvmsg */
387 rxrpc_seq_t rx_data_eaten
; /* last data seq ID consumed by recvmsg */
388 rxrpc_seq_t rx_first_oos
; /* first packet in rx_oos_queue (or 0) */
389 rxrpc_seq_t ackr_win_top
; /* top of ACK window (rx_data_eaten is bottom) */
390 rxrpc_seq_net_t ackr_prev_seq
; /* previous sequence number received */
391 u8 ackr_reason
; /* reason to ACK */
392 __be32 ackr_serial
; /* serial of packet being ACK'd */
393 atomic_t ackr_not_idle
; /* number of packets in Rx queue */
395 /* received packet records, 1 bit per record */
396 #define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG)
397 unsigned long ackr_window
[RXRPC_ACKR_WINDOW_ASZ
+ 1];
399 /* the following should all be in net order */
400 __be32 cid
; /* connection ID + channel index */
401 __be32 call_id
; /* call ID on connection */
405 * locally abort an RxRPC call
407 static inline void rxrpc_abort_call(struct rxrpc_call
*call
, u32 abort_code
)
409 write_lock_bh(&call
->state_lock
);
410 if (call
->state
< RXRPC_CALL_COMPLETE
) {
411 call
->abort_code
= abort_code
;
412 call
->state
= RXRPC_CALL_LOCALLY_ABORTED
;
413 set_bit(RXRPC_CALL_ABORT
, &call
->events
);
415 write_unlock_bh(&call
->state_lock
);
421 extern atomic_t rxrpc_n_skbs
;
422 extern __be32 rxrpc_epoch
;
423 extern atomic_t rxrpc_debug_id
;
424 extern struct workqueue_struct
*rxrpc_workqueue
;
429 extern void rxrpc_accept_incoming_calls(struct work_struct
*);
430 extern struct rxrpc_call
*rxrpc_accept_call(struct rxrpc_sock
*,
432 extern int rxrpc_reject_call(struct rxrpc_sock
*);
437 extern void __rxrpc_propose_ACK(struct rxrpc_call
*, u8
, __be32
, bool);
438 extern void rxrpc_propose_ACK(struct rxrpc_call
*, u8
, __be32
, bool);
439 extern void rxrpc_process_call(struct work_struct
*);
444 extern struct kmem_cache
*rxrpc_call_jar
;
445 extern struct list_head rxrpc_calls
;
446 extern rwlock_t rxrpc_call_lock
;
448 extern struct rxrpc_call
*rxrpc_get_client_call(struct rxrpc_sock
*,
449 struct rxrpc_transport
*,
450 struct rxrpc_conn_bundle
*,
451 unsigned long, int, gfp_t
);
452 extern struct rxrpc_call
*rxrpc_incoming_call(struct rxrpc_sock
*,
453 struct rxrpc_connection
*,
454 struct rxrpc_header
*, gfp_t
);
455 extern struct rxrpc_call
*rxrpc_find_server_call(struct rxrpc_sock
*,
457 extern void rxrpc_release_call(struct rxrpc_call
*);
458 extern void rxrpc_release_calls_on_socket(struct rxrpc_sock
*);
459 extern void __rxrpc_put_call(struct rxrpc_call
*);
460 extern void __exit
rxrpc_destroy_all_calls(void);
465 extern struct list_head rxrpc_connections
;
466 extern rwlock_t rxrpc_connection_lock
;
468 extern struct rxrpc_conn_bundle
*rxrpc_get_bundle(struct rxrpc_sock
*,
469 struct rxrpc_transport
*,
472 extern void rxrpc_put_bundle(struct rxrpc_transport
*,
473 struct rxrpc_conn_bundle
*);
474 extern int rxrpc_connect_call(struct rxrpc_sock
*, struct rxrpc_transport
*,
475 struct rxrpc_conn_bundle
*, struct rxrpc_call
*,
477 extern void rxrpc_put_connection(struct rxrpc_connection
*);
478 extern void __exit
rxrpc_destroy_all_connections(void);
479 extern struct rxrpc_connection
*rxrpc_find_connection(struct rxrpc_transport
*,
480 struct rxrpc_header
*);
481 extern struct rxrpc_connection
*
482 rxrpc_incoming_connection(struct rxrpc_transport
*, struct rxrpc_header
*,
488 extern void rxrpc_process_connection(struct work_struct
*);
489 extern void rxrpc_reject_packet(struct rxrpc_local
*, struct sk_buff
*);
490 extern void rxrpc_reject_packets(struct work_struct
*);
495 extern void rxrpc_UDP_error_report(struct sock
*);
496 extern void rxrpc_UDP_error_handler(struct work_struct
*);
501 extern unsigned long rxrpc_ack_timeout
;
502 extern const char *rxrpc_pkts
[];
504 extern void rxrpc_data_ready(struct sock
*, int);
505 extern int rxrpc_queue_rcv_skb(struct rxrpc_call
*, struct sk_buff
*, bool,
507 extern void rxrpc_fast_process_packet(struct rxrpc_call
*, struct sk_buff
*);
512 extern rwlock_t rxrpc_local_lock
;
513 extern struct rxrpc_local
*rxrpc_lookup_local(struct sockaddr_rxrpc
*);
514 extern void rxrpc_put_local(struct rxrpc_local
*);
515 extern void __exit
rxrpc_destroy_all_locals(void);
520 extern struct key_type key_type_rxrpc
;
521 extern struct key_type key_type_rxrpc_s
;
523 extern int rxrpc_request_key(struct rxrpc_sock
*, char __user
*, int);
524 extern int rxrpc_server_keyring(struct rxrpc_sock
*, char __user
*, int);
525 extern int rxrpc_get_server_data_key(struct rxrpc_connection
*, const void *,
531 extern int rxrpc_resend_timeout
;
533 extern int rxrpc_send_packet(struct rxrpc_transport
*, struct sk_buff
*);
534 extern int rxrpc_client_sendmsg(struct kiocb
*, struct rxrpc_sock
*,
535 struct rxrpc_transport
*, struct msghdr
*,
537 extern int rxrpc_server_sendmsg(struct kiocb
*, struct rxrpc_sock
*,
538 struct msghdr
*, size_t);
543 extern struct rxrpc_peer
*rxrpc_get_peer(struct sockaddr_rxrpc
*, gfp_t
);
544 extern void rxrpc_put_peer(struct rxrpc_peer
*);
545 extern struct rxrpc_peer
*rxrpc_find_peer(struct rxrpc_local
*,
547 extern void __exit
rxrpc_destroy_all_peers(void);
552 extern const char *const rxrpc_call_states
[];
553 extern const struct file_operations rxrpc_call_seq_fops
;
554 extern const struct file_operations rxrpc_connection_seq_fops
;
559 extern void rxrpc_remove_user_ID(struct rxrpc_sock
*, struct rxrpc_call
*);
560 extern int rxrpc_recvmsg(struct kiocb
*, struct socket
*, struct msghdr
*,
566 extern int rxrpc_register_security(struct rxrpc_security
*);
567 extern void rxrpc_unregister_security(struct rxrpc_security
*);
568 extern int rxrpc_init_client_conn_security(struct rxrpc_connection
*);
569 extern int rxrpc_init_server_conn_security(struct rxrpc_connection
*);
570 extern int rxrpc_secure_packet(const struct rxrpc_call
*, struct sk_buff
*,
572 extern int rxrpc_verify_packet(const struct rxrpc_call
*, struct sk_buff
*,
574 extern void rxrpc_clear_conn_security(struct rxrpc_connection
*);
579 extern void rxrpc_packet_destructor(struct sk_buff
*);
584 extern struct rxrpc_transport
*rxrpc_get_transport(struct rxrpc_local
*,
587 extern void rxrpc_put_transport(struct rxrpc_transport
*);
588 extern void __exit
rxrpc_destroy_all_transports(void);
589 extern struct rxrpc_transport
*rxrpc_find_transport(struct rxrpc_local
*,
590 struct rxrpc_peer
*);
595 extern unsigned rxrpc_debug
;
597 #define dbgprintk(FMT,...) \
598 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
600 /* make sure we maintain the format strings, even when debugging is disabled */
601 static inline __attribute__((format(printf
,1,2)))
602 void _dbprintk(const char *fmt
, ...)
606 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
607 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
608 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
609 #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
610 #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__)
613 #if defined(__KDEBUG)
614 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
615 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
616 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
617 #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__)
618 #define _net(FMT,...) knet(FMT,##__VA_ARGS__)
620 #elif defined(CONFIG_AF_RXRPC_DEBUG)
621 #define RXRPC_DEBUG_KENTER 0x01
622 #define RXRPC_DEBUG_KLEAVE 0x02
623 #define RXRPC_DEBUG_KDEBUG 0x04
624 #define RXRPC_DEBUG_KPROTO 0x08
625 #define RXRPC_DEBUG_KNET 0x10
627 #define _enter(FMT,...) \
629 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \
630 kenter(FMT,##__VA_ARGS__); \
633 #define _leave(FMT,...) \
635 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \
636 kleave(FMT,##__VA_ARGS__); \
639 #define _debug(FMT,...) \
641 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \
642 kdebug(FMT,##__VA_ARGS__); \
645 #define _proto(FMT,...) \
647 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \
648 kproto(FMT,##__VA_ARGS__); \
651 #define _net(FMT,...) \
653 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \
654 knet(FMT,##__VA_ARGS__); \
658 #define _enter(FMT,...) _dbprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
659 #define _leave(FMT,...) _dbprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
660 #define _debug(FMT,...) _dbprintk(" "FMT ,##__VA_ARGS__)
661 #define _proto(FMT,...) _dbprintk("### "FMT ,##__VA_ARGS__)
662 #define _net(FMT,...) _dbprintk("@@@ "FMT ,##__VA_ARGS__)
666 * debug assertion checking
668 #if 1 // defined(__KDEBUGALL)
672 if (unlikely(!(X))) { \
673 printk(KERN_ERR "\n"); \
674 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
679 #define ASSERTCMP(X, OP, Y) \
681 if (unlikely(!((X) OP (Y)))) { \
682 printk(KERN_ERR "\n"); \
683 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
684 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
685 (unsigned long)(X), (unsigned long)(Y)); \
686 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
687 (unsigned long)(X), (unsigned long)(Y)); \
692 #define ASSERTIF(C, X) \
694 if (unlikely((C) && !(X))) { \
695 printk(KERN_ERR "\n"); \
696 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
701 #define ASSERTIFCMP(C, X, OP, Y) \
703 if (unlikely((C) && !((X) OP (Y)))) { \
704 printk(KERN_ERR "\n"); \
705 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
706 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
707 (unsigned long)(X), (unsigned long)(Y)); \
708 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
709 (unsigned long)(X), (unsigned long)(Y)); \
720 #define ASSERTCMP(X, OP, Y) \
724 #define ASSERTIF(C, X) \
728 #define ASSERTIFCMP(C, X, OP, Y) \
732 #endif /* __KDEBUGALL */
735 * socket buffer accounting / leak finding
737 static inline void __rxrpc_new_skb(struct sk_buff
*skb
, const char *fn
)
739 //_net("new skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs));
740 //atomic_inc(&rxrpc_n_skbs);
743 #define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__)
745 static inline void __rxrpc_kill_skb(struct sk_buff
*skb
, const char *fn
)
747 //_net("kill skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs));
748 //atomic_dec(&rxrpc_n_skbs);
751 #define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__)
753 static inline void __rxrpc_free_skb(struct sk_buff
*skb
, const char *fn
)
756 CHECK_SLAB_OKAY(&skb
->users
);
757 //_net("free skb %p %s [%d]",
758 // skb, fn, atomic_read(&rxrpc_n_skbs));
759 //atomic_dec(&rxrpc_n_skbs);
764 #define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__)
766 static inline void rxrpc_purge_queue(struct sk_buff_head
*list
)
769 while ((skb
= skb_dequeue((list
))) != NULL
)
773 static inline void __rxrpc_get_local(struct rxrpc_local
*local
, const char *f
)
775 CHECK_SLAB_OKAY(&local
->usage
);
776 if (atomic_inc_return(&local
->usage
) == 1)
777 printk("resurrected (%s)\n", f
);
780 #define rxrpc_get_local(LOCAL) __rxrpc_get_local((LOCAL), __func__)
782 #define rxrpc_get_call(CALL) \
784 CHECK_SLAB_OKAY(&(CALL)->usage); \
785 if (atomic_inc_return(&(CALL)->usage) == 1) \
789 #define rxrpc_put_call(CALL) \
791 __rxrpc_put_call(CALL); \