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 <linux/atomic.h>
13 #include <linux/seqlock.h>
15 #include <net/af_rxrpc.h>
16 #include <rxrpc/packet.h>
19 #define CHECK_SLAB_OKAY(X) \
20 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
21 (POISON_FREE << 8 | POISON_FREE))
23 #define CHECK_SLAB_OKAY(X) do {} while (0)
26 #define FCRYPT_BSIZE 8
32 } __attribute__((aligned(8)));
34 #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS))
35 #define rxrpc_queue_delayed_work(WS,D) \
36 queue_delayed_work(rxrpc_workqueue, (WS), (D))
38 #define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor)
40 struct rxrpc_connection;
43 * Mark applied to socket buffers.
46 RXRPC_SKB_MARK_DATA, /* data message */
47 RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */
48 RXRPC_SKB_MARK_BUSY, /* server busy message */
49 RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */
50 RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */
51 RXRPC_SKB_MARK_NET_ERROR, /* network error message */
52 RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */
53 RXRPC_SKB_MARK_NEW_CALL, /* local error message */
57 * sk_state for RxRPC sockets
61 RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */
62 RXRPC_CLIENT_BOUND, /* client local address bound */
63 RXRPC_SERVER_BOUND, /* server local address bound */
64 RXRPC_SERVER_LISTENING, /* server listening for connections */
65 RXRPC_CLOSE, /* socket is being closed */
69 * RxRPC socket definition
72 /* WARNING: sk has to be the first member */
74 rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */
75 struct rxrpc_local *local; /* local endpoint */
76 struct list_head listen_link; /* link in the local endpoint's listen list */
77 struct list_head secureq; /* calls awaiting connection security clearance */
78 struct list_head acceptq; /* calls awaiting acceptance */
79 struct key *key; /* security for this socket */
80 struct key *securities; /* list of server security descriptors */
81 struct rb_root calls; /* outstanding calls on this socket */
83 #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */
84 rwlock_t call_lock; /* lock for calls */
85 u32 min_sec_level; /* minimum security level */
86 #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
87 bool exclusive; /* Exclusive connection for a client socket */
88 sa_family_t family; /* Protocol family created with */
89 struct sockaddr_rxrpc srx; /* local address */
90 struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */
93 #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
96 * CPU-byteorder normalised Rx packet header.
98 struct rxrpc_host_header {
99 u32 epoch; /* client boot timestamp */
100 u32 cid; /* connection and channel ID */
101 u32 callNumber; /* call ID (0 for connection-level packets) */
102 u32 seq; /* sequence number of pkt in call stream */
103 u32 serial; /* serial number of pkt sent to network */
104 u8 type; /* packet type */
105 u8 flags; /* packet flags */
106 u8 userStatus; /* app-layer defined status */
107 u8 securityIndex; /* security protocol ID */
109 u16 _rsvd; /* reserved */
110 u16 cksum; /* kerberos security checksum */
112 u16 serviceId; /* service ID */
116 * RxRPC socket buffer private variables
117 * - max 48 bytes (struct sk_buff::cb)
119 struct rxrpc_skb_priv {
120 struct rxrpc_call *call; /* call with which associated */
121 unsigned long resend_at; /* time in jiffies at which to resend */
123 unsigned int offset; /* offset into buffer of next read */
124 int remain; /* amount of space remaining for next write */
125 u32 error; /* network error code */
126 bool need_resend; /* T if needs resending */
129 struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */
132 #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
135 * RxRPC security module interface
137 struct rxrpc_security {
138 const char *name; /* name of this service */
139 u8 security_index; /* security type provided */
141 /* Initialise a security service */
144 /* Clean up a security service */
147 /* initialise a connection's security */
148 int (*init_connection_security)(struct rxrpc_connection *);
150 /* prime a connection's packet security */
151 int (*prime_packet_security)(struct rxrpc_connection *);
153 /* impose security on a packet */
154 int (*secure_packet)(struct rxrpc_call *,
159 /* verify the security on a received packet */
160 int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, u32 *);
162 /* issue a challenge */
163 int (*issue_challenge)(struct rxrpc_connection *);
165 /* respond to a challenge */
166 int (*respond_to_challenge)(struct rxrpc_connection *,
170 /* verify a response */
171 int (*verify_response)(struct rxrpc_connection *,
175 /* clear connection security */
176 void (*clear)(struct rxrpc_connection *);
180 * RxRPC local transport endpoint description
181 * - owned by a single AF_RXRPC socket
182 * - pointed to by transport socket struct sk_user_data
187 struct list_head link;
188 struct socket *socket; /* my UDP socket */
189 struct work_struct processor;
190 struct list_head services; /* services listening on this endpoint */
191 struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
192 struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */
193 struct sk_buff_head reject_queue; /* packets awaiting rejection */
194 struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */
195 struct rb_root client_conns; /* Client connections by socket params */
196 spinlock_t client_conns_lock; /* Lock for client_conns */
197 spinlock_t lock; /* access lock */
198 rwlock_t services_lock; /* lock for services list */
199 int debug_id; /* debug ID for printks */
201 struct sockaddr_rxrpc srx; /* local address */
205 * RxRPC remote transport endpoint definition
206 * - matched by local endpoint, remote port, address and protocol type
209 struct rcu_head rcu; /* This must be first */
211 unsigned long hash_key;
212 struct hlist_node hash_link;
213 struct rxrpc_local *local;
214 struct hlist_head error_targets; /* targets for net error distribution */
215 struct work_struct error_distributor;
216 struct rb_root service_conns; /* Service connections */
217 seqlock_t service_conn_lock;
218 spinlock_t lock; /* access lock */
219 unsigned int if_mtu; /* interface MTU for this peer */
220 unsigned int mtu; /* network MTU for this peer */
221 unsigned int maxdata; /* data size (MTU - hdrsize) */
222 unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */
223 int debug_id; /* debug ID for printks */
224 int error_report; /* Net (+0) or local (+1000000) to distribute */
225 #define RXRPC_LOCAL_ERROR_OFFSET 1000000
226 struct sockaddr_rxrpc srx; /* remote address */
228 /* calculated RTT cache */
229 #define RXRPC_RTT_CACHE_SIZE 32
230 suseconds_t rtt; /* current RTT estimate (in uS) */
231 unsigned int rtt_point; /* next entry at which to insert */
232 unsigned int rtt_usage; /* amount of cache actually used */
233 suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */
237 * Keys for matching a connection.
239 struct rxrpc_conn_proto {
242 u32 epoch; /* epoch of this connection */
243 u32 cid; /* connection ID */
249 struct rxrpc_conn_parameters {
250 struct rxrpc_local *local; /* Representation of local endpoint */
251 struct rxrpc_peer *peer; /* Remote endpoint */
252 struct key *key; /* Security details */
253 bool exclusive; /* T if conn is exclusive */
254 u16 service_id; /* Service ID for this connection */
255 u32 security_level; /* Security level selected */
259 * Bits in the connection flags.
261 enum rxrpc_conn_flag {
262 RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */
263 RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */
264 RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */
265 RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */
266 RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */
267 RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */
271 * Events that can be raised upon a connection.
273 enum rxrpc_conn_event {
274 RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */
278 * The connection cache state.
280 enum rxrpc_conn_cache_state {
281 RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */
282 RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */
283 RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */
284 RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */
285 RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */
289 * The connection protocol state.
291 enum rxrpc_conn_proto_state {
292 RXRPC_CONN_UNUSED, /* Connection not yet attempted */
293 RXRPC_CONN_CLIENT, /* Client connection */
294 RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */
295 RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */
296 RXRPC_CONN_SERVICE, /* Service secured connection */
297 RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */
298 RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */
299 RXRPC_CONN__NR_STATES
303 * RxRPC connection definition
304 * - matched by { local, peer, epoch, conn_id, direction }
305 * - each connection can only handle four simultaneous calls
307 struct rxrpc_connection {
308 struct rxrpc_conn_proto proto;
309 struct rxrpc_conn_parameters params;
313 struct list_head cache_link;
315 spinlock_t channel_lock;
316 unsigned char active_chans; /* Mask of active channels */
317 #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1)
318 struct list_head waiting_calls; /* Calls waiting for channels */
319 struct rxrpc_channel {
320 struct rxrpc_call __rcu *call; /* Active call */
321 u32 call_id; /* ID of current call */
322 u32 call_counter; /* Call ID counter */
323 u32 last_call; /* ID of last call */
324 u8 last_type; /* Type of last packet */
330 } channels[RXRPC_MAXCALLS];
332 struct work_struct processor; /* connection event processor */
334 struct rb_node client_node; /* Node in local->client_conns */
335 struct rb_node service_node; /* Node in peer->service_conns */
337 struct list_head proc_link; /* link in procfs list */
338 struct list_head link; /* link in master connection list */
339 struct sk_buff_head rx_queue; /* received conn-level packets */
340 const struct rxrpc_security *security; /* applied security module */
341 struct key *server_key; /* security for this service */
342 struct crypto_skcipher *cipher; /* encryption handle */
343 struct rxrpc_crypt csum_iv; /* packet checksum base */
345 unsigned long events;
346 unsigned long idle_timestamp; /* Time at which last became idle */
347 spinlock_t state_lock; /* state-change lock */
348 enum rxrpc_conn_cache_state cache_state : 8;
349 enum rxrpc_conn_proto_state state : 8; /* current state of connection */
350 u32 local_abort; /* local abort code */
351 u32 remote_abort; /* remote abort code */
352 int debug_id; /* debug ID for printks */
353 atomic_t serial; /* packet serial number counter */
354 unsigned int hi_serial; /* highest serial number received */
355 u8 size_align; /* data size alignment (for security) */
356 u8 header_size; /* rxrpc + security header size */
357 u8 security_size; /* security header size */
358 u32 security_nonce; /* response re-use preventer */
359 u8 security_ix; /* security type */
360 u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */
364 * Flags in call->flags.
366 enum rxrpc_call_flag {
367 RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */
368 RXRPC_CALL_TERMINAL_MSG, /* call has given the socket its final message */
369 RXRPC_CALL_RCVD_LAST, /* all packets received */
370 RXRPC_CALL_RUN_RTIMER, /* Tx resend timer started */
371 RXRPC_CALL_TX_SOFT_ACK, /* sent some soft ACKs */
372 RXRPC_CALL_INIT_ACCEPT, /* acceptance was initiated */
373 RXRPC_CALL_HAS_USERID, /* has a user ID attached */
374 RXRPC_CALL_EXPECT_OOS, /* expect out of sequence packets */
375 RXRPC_CALL_IS_SERVICE, /* Call is service call */
376 RXRPC_CALL_EXPOSED, /* The call was exposed to the world */
377 RXRPC_CALL_RX_NO_MORE, /* Don't indicate MSG_MORE from recvmsg() */
381 * Events that can be raised on a call.
383 enum rxrpc_call_event {
384 RXRPC_CALL_EV_RCVD_ACKALL, /* ACKALL or reply received */
385 RXRPC_CALL_EV_RCVD_BUSY, /* busy packet received */
386 RXRPC_CALL_EV_RCVD_ABORT, /* abort packet received */
387 RXRPC_CALL_EV_RCVD_ERROR, /* network error received */
388 RXRPC_CALL_EV_ACK_FINAL, /* need to generate final ACK (and release call) */
389 RXRPC_CALL_EV_ACK, /* need to generate ACK */
390 RXRPC_CALL_EV_REJECT_BUSY, /* need to generate busy message */
391 RXRPC_CALL_EV_ABORT, /* need to generate abort */
392 RXRPC_CALL_EV_CONN_ABORT, /* local connection abort generated */
393 RXRPC_CALL_EV_RESEND_TIMER, /* Tx resend timer expired */
394 RXRPC_CALL_EV_RESEND, /* Tx resend required */
395 RXRPC_CALL_EV_DRAIN_RX_OOS, /* drain the Rx out of sequence queue */
396 RXRPC_CALL_EV_LIFE_TIMER, /* call's lifetimer ran out */
397 RXRPC_CALL_EV_ACCEPTED, /* incoming call accepted by userspace app */
398 RXRPC_CALL_EV_SECURED, /* incoming call's connection is now secure */
399 RXRPC_CALL_EV_POST_ACCEPT, /* need to post an "accept?" message to the app */
400 RXRPC_CALL_EV_RELEASE, /* need to release the call's resources */
404 * The states that a call can be in.
406 enum rxrpc_call_state {
407 RXRPC_CALL_UNINITIALISED,
408 RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */
409 RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */
410 RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */
411 RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */
412 RXRPC_CALL_CLIENT_FINAL_ACK, /* - client sending final ACK phase */
413 RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */
414 RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */
415 RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */
416 RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */
417 RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */
418 RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */
419 RXRPC_CALL_COMPLETE, /* - call complete */
420 RXRPC_CALL_DEAD, /* - call is dead */
421 NR__RXRPC_CALL_STATES
425 * Call completion condition (state == RXRPC_CALL_COMPLETE).
427 enum rxrpc_call_completion {
428 RXRPC_CALL_SUCCEEDED, /* - Normal termination */
429 RXRPC_CALL_SERVER_BUSY, /* - call rejected by busy server */
430 RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */
431 RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */
432 RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */
433 RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */
434 NR__RXRPC_CALL_COMPLETIONS
438 * RxRPC call definition
439 * - matched by { connection, call_id }
443 struct rxrpc_connection *conn; /* connection carrying call */
444 struct rxrpc_peer *peer; /* Peer record for remote address */
445 struct rxrpc_sock *socket; /* socket responsible */
446 struct timer_list lifetimer; /* lifetime remaining on call */
447 struct timer_list deadspan; /* reap timer for re-ACK'ing, etc */
448 struct timer_list ack_timer; /* ACK generation timer */
449 struct timer_list resend_timer; /* Tx resend timer */
450 struct work_struct destroyer; /* call destroyer */
451 struct work_struct processor; /* packet processor and ACK generator */
452 rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */
453 struct list_head link; /* link in master call list */
454 struct list_head chan_wait_link; /* Link in conn->waiting_calls */
455 struct hlist_node error_link; /* link in error distribution list */
456 struct list_head accept_link; /* calls awaiting acceptance */
457 struct rb_node sock_node; /* node in socket call tree */
458 struct sk_buff_head rx_queue; /* received packets */
459 struct sk_buff_head rx_oos_queue; /* packets received out of sequence */
460 struct sk_buff_head knlrecv_queue; /* Queue for kernel_recv [TODO: replace this] */
461 struct sk_buff *tx_pending; /* Tx socket buffer being filled */
462 wait_queue_head_t waitq; /* Wait queue for channel or Tx */
463 __be32 crypto_buf[2]; /* Temporary packet crypto buffer */
464 unsigned long user_call_ID; /* user-defined call ID */
465 unsigned long creation_jif; /* time of call creation */
467 unsigned long events;
469 rwlock_t state_lock; /* lock for state transition */
470 u32 abort_code; /* Local/remote abort code */
471 int error; /* Local error incurred */
472 enum rxrpc_call_state state : 8; /* current state of call */
473 enum rxrpc_call_completion completion : 8; /* Call completion condition */
475 atomic_t skb_count; /* Outstanding packets on this call */
476 atomic_t sequence; /* Tx data packet sequence counter */
477 u16 service_id; /* service ID */
478 u32 call_id; /* call ID on connection */
479 u32 cid; /* connection ID plus channel index */
480 int debug_id; /* debug ID for printks */
482 /* transmission-phase ACK management */
483 u8 acks_head; /* offset into window of first entry */
484 u8 acks_tail; /* offset into window of last entry */
485 u8 acks_winsz; /* size of un-ACK'd window */
486 u8 acks_unacked; /* lowest unacked packet in last ACK received */
487 int acks_latest; /* serial number of latest ACK received */
488 rxrpc_seq_t acks_hard; /* highest definitively ACK'd msg seq */
489 unsigned long *acks_window; /* sent packet window
490 * - elements are pointers with LSB set if ACK'd
493 /* receive-phase ACK management */
494 rxrpc_seq_t rx_data_expect; /* next data seq ID expected to be received */
495 rxrpc_seq_t rx_data_post; /* next data seq ID expected to be posted */
496 rxrpc_seq_t rx_data_recv; /* last data seq ID encountered by recvmsg */
497 rxrpc_seq_t rx_data_eaten; /* last data seq ID consumed by recvmsg */
498 rxrpc_seq_t rx_first_oos; /* first packet in rx_oos_queue (or 0) */
499 rxrpc_seq_t ackr_win_top; /* top of ACK window (rx_data_eaten is bottom) */
500 rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */
501 u8 ackr_reason; /* reason to ACK */
502 u16 ackr_skew; /* skew on packet being ACK'd */
503 rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */
504 atomic_t ackr_not_idle; /* number of packets in Rx queue */
506 /* received packet records, 1 bit per record */
507 #define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG)
508 unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1];
511 #include <trace/events/rxrpc.h>
516 extern atomic_t rxrpc_n_skbs;
517 extern u32 rxrpc_epoch;
518 extern atomic_t rxrpc_debug_id;
519 extern struct workqueue_struct *rxrpc_workqueue;
524 void rxrpc_accept_incoming_calls(struct rxrpc_local *);
525 struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long,
527 int rxrpc_reject_call(struct rxrpc_sock *);
532 void __rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool);
533 void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool);
534 void rxrpc_process_call(struct work_struct *);
539 extern const char *const rxrpc_call_states[];
540 extern const char *const rxrpc_call_completions[];
541 extern unsigned int rxrpc_max_call_lifetime;
542 extern unsigned int rxrpc_dead_call_expiry;
543 extern struct kmem_cache *rxrpc_call_jar;
544 extern struct list_head rxrpc_calls;
545 extern rwlock_t rxrpc_call_lock;
547 struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long);
548 struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *,
549 struct rxrpc_conn_parameters *,
550 struct sockaddr_rxrpc *,
551 unsigned long, gfp_t);
552 struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *,
553 struct rxrpc_connection *,
555 void rxrpc_release_call(struct rxrpc_call *);
556 void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
557 void rxrpc_see_call(struct rxrpc_call *);
558 void rxrpc_get_call(struct rxrpc_call *);
559 void rxrpc_put_call(struct rxrpc_call *);
560 void rxrpc_get_call_for_skb(struct rxrpc_call *, struct sk_buff *);
561 void rxrpc_put_call_for_skb(struct rxrpc_call *, struct sk_buff *);
562 void __exit rxrpc_destroy_all_calls(void);
564 static inline bool rxrpc_is_service_call(const struct rxrpc_call *call)
566 return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags);
569 static inline bool rxrpc_is_client_call(const struct rxrpc_call *call)
571 return !rxrpc_is_service_call(call);
575 * Transition a call to the complete state.
577 static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call,
578 enum rxrpc_call_completion compl,
582 if (call->state < RXRPC_CALL_COMPLETE) {
583 call->abort_code = abort_code;
585 call->completion = compl,
586 call->state = RXRPC_CALL_COMPLETE;
592 static inline bool rxrpc_set_call_completion(struct rxrpc_call *call,
593 enum rxrpc_call_completion compl,
599 write_lock_bh(&call->state_lock);
600 ret = __rxrpc_set_call_completion(call, compl, abort_code, error);
601 write_unlock_bh(&call->state_lock);
606 * Record that a call successfully completed.
608 static inline void __rxrpc_call_completed(struct rxrpc_call *call)
610 __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0);
613 static inline void rxrpc_call_completed(struct rxrpc_call *call)
615 write_lock_bh(&call->state_lock);
616 __rxrpc_call_completed(call);
617 write_unlock_bh(&call->state_lock);
621 * Record that a call is locally aborted.
623 static inline bool __rxrpc_abort_call(struct rxrpc_call *call,
624 u32 abort_code, int error)
626 if (__rxrpc_set_call_completion(call,
627 RXRPC_CALL_LOCALLY_ABORTED,
628 abort_code, error)) {
629 set_bit(RXRPC_CALL_EV_ABORT, &call->events);
635 static inline bool rxrpc_abort_call(struct rxrpc_call *call,
636 u32 abort_code, int error)
640 write_lock_bh(&call->state_lock);
641 ret = __rxrpc_abort_call(call, abort_code, error);
642 write_unlock_bh(&call->state_lock);
649 extern unsigned int rxrpc_max_client_connections;
650 extern unsigned int rxrpc_reap_client_connections;
651 extern unsigned int rxrpc_conn_idle_client_expiry;
652 extern unsigned int rxrpc_conn_idle_client_fast_expiry;
653 extern struct idr rxrpc_client_conn_ids;
655 void rxrpc_destroy_client_conn_ids(void);
656 int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *,
657 struct sockaddr_rxrpc *, gfp_t);
658 void rxrpc_expose_client_call(struct rxrpc_call *);
659 void rxrpc_disconnect_client_call(struct rxrpc_call *);
660 void rxrpc_put_client_conn(struct rxrpc_connection *);
661 void __exit rxrpc_destroy_all_client_connections(void);
666 void rxrpc_process_connection(struct work_struct *);
667 void rxrpc_reject_packet(struct rxrpc_local *, struct sk_buff *);
668 void rxrpc_reject_packets(struct rxrpc_local *);
673 extern unsigned int rxrpc_connection_expiry;
674 extern struct list_head rxrpc_connections;
675 extern struct list_head rxrpc_connection_proc_list;
676 extern rwlock_t rxrpc_connection_lock;
678 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *);
679 struct rxrpc_connection *rxrpc_alloc_connection(gfp_t);
680 struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *,
682 void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *);
683 void rxrpc_disconnect_call(struct rxrpc_call *);
684 void rxrpc_kill_connection(struct rxrpc_connection *);
685 void __rxrpc_put_connection(struct rxrpc_connection *);
686 void __exit rxrpc_destroy_all_connections(void);
688 static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn)
690 return conn->out_clientflag;
693 static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn)
695 return !rxrpc_conn_is_client(conn);
698 static inline void rxrpc_get_connection(struct rxrpc_connection *conn)
700 atomic_inc(&conn->usage);
704 struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *conn)
706 return atomic_inc_not_zero(&conn->usage) ? conn : NULL;
709 static inline void rxrpc_put_connection(struct rxrpc_connection *conn)
714 if (rxrpc_conn_is_client(conn)) {
715 if (atomic_dec_and_test(&conn->usage))
716 rxrpc_put_client_conn(conn);
718 if (atomic_dec_return(&conn->usage) == 1)
719 __rxrpc_put_connection(conn);
723 static inline bool rxrpc_queue_conn(struct rxrpc_connection *conn)
725 if (!rxrpc_get_connection_maybe(conn))
727 if (!rxrpc_queue_work(&conn->processor))
728 rxrpc_put_connection(conn);
735 struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *,
737 struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *,
738 struct sockaddr_rxrpc *,
740 void rxrpc_unpublish_service_conn(struct rxrpc_connection *);
745 void rxrpc_data_ready(struct sock *);
746 int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, bool);
747 void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *);
752 extern const struct rxrpc_security rxrpc_no_security;
757 extern struct key_type key_type_rxrpc;
758 extern struct key_type key_type_rxrpc_s;
760 int rxrpc_request_key(struct rxrpc_sock *, char __user *, int);
761 int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int);
762 int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t,
768 extern void rxrpc_process_local_events(struct rxrpc_local *);
773 struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *);
774 void __rxrpc_put_local(struct rxrpc_local *);
775 void __exit rxrpc_destroy_all_locals(void);
777 static inline void rxrpc_get_local(struct rxrpc_local *local)
779 atomic_inc(&local->usage);
783 struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local)
785 return atomic_inc_not_zero(&local->usage) ? local : NULL;
788 static inline void rxrpc_put_local(struct rxrpc_local *local)
790 if (local && atomic_dec_and_test(&local->usage))
791 __rxrpc_put_local(local);
794 static inline void rxrpc_queue_local(struct rxrpc_local *local)
796 rxrpc_queue_work(&local->processor);
802 extern unsigned int rxrpc_max_backlog __read_mostly;
803 extern unsigned int rxrpc_requested_ack_delay;
804 extern unsigned int rxrpc_soft_ack_delay;
805 extern unsigned int rxrpc_idle_ack_delay;
806 extern unsigned int rxrpc_rx_window_size;
807 extern unsigned int rxrpc_rx_mtu;
808 extern unsigned int rxrpc_rx_jumbo_max;
809 extern unsigned int rxrpc_resend_timeout;
811 extern const char *const rxrpc_pkts[];
812 extern const s8 rxrpc_ack_priority[];
814 extern const char *rxrpc_acks(u8 reason);
819 int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *);
824 void rxrpc_error_report(struct sock *);
825 void rxrpc_peer_error_distributor(struct work_struct *);
830 struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *,
831 const struct sockaddr_rxrpc *);
832 struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *,
833 struct sockaddr_rxrpc *, gfp_t);
834 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t);
836 static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer)
838 atomic_inc(&peer->usage);
843 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer)
845 return atomic_inc_not_zero(&peer->usage) ? peer : NULL;
848 extern void __rxrpc_put_peer(struct rxrpc_peer *peer);
849 static inline void rxrpc_put_peer(struct rxrpc_peer *peer)
851 if (peer && atomic_dec_and_test(&peer->usage))
852 __rxrpc_put_peer(peer);
858 extern const struct file_operations rxrpc_call_seq_fops;
859 extern const struct file_operations rxrpc_connection_seq_fops;
864 void rxrpc_remove_user_ID(struct rxrpc_sock *, struct rxrpc_call *);
865 int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int);
871 extern const struct rxrpc_security rxkad;
877 int __init rxrpc_init_security(void);
878 void rxrpc_exit_security(void);
879 int rxrpc_init_client_conn_security(struct rxrpc_connection *);
880 int rxrpc_init_server_conn_security(struct rxrpc_connection *);
885 int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
890 void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *);
891 void rxrpc_packet_destructor(struct sk_buff *);
892 void rxrpc_new_skb(struct sk_buff *);
893 void rxrpc_see_skb(struct sk_buff *);
894 void rxrpc_get_skb(struct sk_buff *);
895 void rxrpc_free_skb(struct sk_buff *);
896 void rxrpc_purge_queue(struct sk_buff_head *);
902 extern int __init rxrpc_sysctl_init(void);
903 extern void rxrpc_sysctl_exit(void);
905 static inline int __init rxrpc_sysctl_init(void) { return 0; }
906 static inline void rxrpc_sysctl_exit(void) {}
912 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *);
917 extern unsigned int rxrpc_debug;
919 #define dbgprintk(FMT,...) \
920 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
922 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
923 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
924 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
925 #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
926 #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__)
929 #if defined(__KDEBUG)
930 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
931 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
932 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
933 #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__)
934 #define _net(FMT,...) knet(FMT,##__VA_ARGS__)
936 #elif defined(CONFIG_AF_RXRPC_DEBUG)
937 #define RXRPC_DEBUG_KENTER 0x01
938 #define RXRPC_DEBUG_KLEAVE 0x02
939 #define RXRPC_DEBUG_KDEBUG 0x04
940 #define RXRPC_DEBUG_KPROTO 0x08
941 #define RXRPC_DEBUG_KNET 0x10
943 #define _enter(FMT,...) \
945 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \
946 kenter(FMT,##__VA_ARGS__); \
949 #define _leave(FMT,...) \
951 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \
952 kleave(FMT,##__VA_ARGS__); \
955 #define _debug(FMT,...) \
957 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \
958 kdebug(FMT,##__VA_ARGS__); \
961 #define _proto(FMT,...) \
963 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \
964 kproto(FMT,##__VA_ARGS__); \
967 #define _net(FMT,...) \
969 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \
970 knet(FMT,##__VA_ARGS__); \
974 #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
975 #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
976 #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
977 #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__)
978 #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__)
982 * debug assertion checking
984 #if 1 // defined(__KDEBUGALL)
988 if (unlikely(!(X))) { \
989 pr_err("Assertion failed\n"); \
994 #define ASSERTCMP(X, OP, Y) \
996 unsigned long _x = (unsigned long)(X); \
997 unsigned long _y = (unsigned long)(Y); \
998 if (unlikely(!(_x OP _y))) { \
999 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1000 _x, _x, #OP, _y, _y); \
1005 #define ASSERTIF(C, X) \
1007 if (unlikely((C) && !(X))) { \
1008 pr_err("Assertion failed\n"); \
1013 #define ASSERTIFCMP(C, X, OP, Y) \
1015 unsigned long _x = (unsigned long)(X); \
1016 unsigned long _y = (unsigned long)(Y); \
1017 if (unlikely((C) && !(_x OP _y))) { \
1018 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \
1019 _x, _x, #OP, _y, _y); \
1030 #define ASSERTCMP(X, OP, Y) \
1034 #define ASSERTIF(C, X) \
1038 #define ASSERTIFCMP(C, X, OP, Y) \
1042 #endif /* __KDEBUGALL */