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12#include <rxrpc/packet.h>
13
14#if 0
15#define CHECK_SLAB_OKAY(X) \
16 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \
17 (POISON_FREE << 8 | POISON_FREE))
18#else
19#define CHECK_SLAB_OKAY(X) do {} while(0)
20#endif
21
22#define FCRYPT_BSIZE 8
23struct rxrpc_crypt {
24 union {
25 u8 x[FCRYPT_BSIZE];
26 __be32 n[2];
27 };
28} __attribute__((aligned(8)));
29
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))
33
34#define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor)
35#define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor)
36
37
38
39
40enum {
41 RXRPC_UNCONNECTED = 0,
42 RXRPC_CLIENT_BOUND,
43 RXRPC_CLIENT_CONNECTED,
44 RXRPC_SERVER_BOUND,
45 RXRPC_SERVER_LISTENING,
46 RXRPC_CLOSE,
47};
48
49
50
51
52struct rxrpc_sock {
53
54 struct sock sk;
55 rxrpc_interceptor_t interceptor;
56 struct rxrpc_local *local;
57 struct rxrpc_transport *trans;
58 struct rxrpc_conn_bundle *bundle;
59 struct rxrpc_connection *conn;
60 struct list_head listen_link;
61 struct list_head secureq;
62 struct list_head acceptq;
63 struct key *key;
64 struct key *securities;
65 struct rb_root calls;
66 unsigned long flags;
67#define RXRPC_SOCK_EXCLUSIVE_CONN 1
68 rwlock_t call_lock;
69 u32 min_sec_level;
70#define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
71 struct sockaddr_rxrpc srx;
72 sa_family_t proto;
73 __be16 service_id;
74};
75
76#define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk)
77
78
79
80
81
82struct rxrpc_skb_priv {
83 struct rxrpc_call *call;
84 unsigned long resend_at;
85 union {
86 unsigned int offset;
87 int remain;
88 u32 error;
89 bool need_resend;
90 };
91
92 struct rxrpc_header hdr;
93};
94
95#define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb)
96
97enum rxrpc_command {
98 RXRPC_CMD_SEND_DATA,
99 RXRPC_CMD_SEND_ABORT,
100 RXRPC_CMD_ACCEPT,
101 RXRPC_CMD_REJECT_BUSY,
102};
103
104
105
106
107struct rxrpc_security {
108 struct module *owner;
109 struct list_head link;
110 const char *name;
111 u8 security_index;
112
113
114 int (*init_connection_security)(struct rxrpc_connection *);
115
116
117 void (*prime_packet_security)(struct rxrpc_connection *);
118
119
120 int (*secure_packet)(const struct rxrpc_call *,
121 struct sk_buff *,
122 size_t,
123 void *);
124
125
126 int (*verify_packet)(const struct rxrpc_call *, struct sk_buff *,
127 u32 *);
128
129
130 int (*issue_challenge)(struct rxrpc_connection *);
131
132
133 int (*respond_to_challenge)(struct rxrpc_connection *,
134 struct sk_buff *,
135 u32 *);
136
137
138 int (*verify_response)(struct rxrpc_connection *,
139 struct sk_buff *,
140 u32 *);
141
142
143 void (*clear)(struct rxrpc_connection *);
144};
145
146
147
148
149
150struct rxrpc_local {
151 struct socket *socket;
152 struct work_struct destroyer;
153 struct work_struct acceptor;
154 struct work_struct rejecter;
155 struct work_struct event_processor;
156 struct list_head services;
157 struct list_head link;
158 struct rw_semaphore defrag_sem;
159 struct sk_buff_head accept_queue;
160 struct sk_buff_head reject_queue;
161 struct sk_buff_head event_queue;
162 spinlock_t lock;
163 rwlock_t services_lock;
164 atomic_t usage;
165 int debug_id;
166 volatile char error_rcvd;
167 struct sockaddr_rxrpc srx;
168};
169
170
171
172
173
174
175struct rxrpc_peer {
176 struct work_struct destroyer;
177 struct list_head link;
178 struct list_head error_targets;
179 spinlock_t lock;
180 atomic_t usage;
181 unsigned int if_mtu;
182 unsigned int mtu;
183 unsigned int maxdata;
184 unsigned short hdrsize;
185 int debug_id;
186 int net_error;
187 struct sockaddr_rxrpc srx;
188
189
190#define RXRPC_RTT_CACHE_SIZE 32
191 suseconds_t rtt;
192 unsigned int rtt_point;
193 unsigned int rtt_usage;
194 suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE];
195};
196
197
198
199
200
201
202struct rxrpc_transport {
203 struct rxrpc_local *local;
204 struct rxrpc_peer *peer;
205 struct work_struct error_handler;
206 struct rb_root bundles;
207 struct rb_root client_conns;
208 struct rb_root server_conns;
209 struct list_head link;
210 struct sk_buff_head error_queue;
211 time_t put_time;
212 spinlock_t client_lock;
213 rwlock_t conn_lock;
214 atomic_t usage;
215 int debug_id;
216 unsigned int conn_idcounter;
217};
218
219
220
221
222
223struct rxrpc_conn_bundle {
224 struct rb_node node;
225 struct list_head unused_conns;
226 struct list_head avail_conns;
227 struct list_head busy_conns;
228 struct key *key;
229 wait_queue_head_t chanwait;
230 atomic_t usage;
231 int debug_id;
232 unsigned short num_conns;
233 __be16 service_id;
234 u8 security_ix;
235};
236
237
238
239
240
241
242struct rxrpc_connection {
243 struct rxrpc_transport *trans;
244 struct rxrpc_conn_bundle *bundle;
245 struct work_struct processor;
246 struct rb_node node;
247 struct list_head link;
248 struct list_head bundle_link;
249 struct rb_root calls;
250 struct sk_buff_head rx_queue;
251 struct rxrpc_call *channels[RXRPC_MAXCALLS];
252 struct rxrpc_security *security;
253 struct key *key;
254 struct key *server_key;
255 struct crypto_blkcipher *cipher;
256 struct rxrpc_crypt csum_iv;
257 unsigned long events;
258#define RXRPC_CONN_CHALLENGE 0
259 time_t put_time;
260 rwlock_t lock;
261 spinlock_t state_lock;
262 atomic_t usage;
263 u32 real_conn_id;
264 enum {
265 RXRPC_CONN_UNUSED,
266 RXRPC_CONN_CLIENT,
267 RXRPC_CONN_SERVER_UNSECURED,
268 RXRPC_CONN_SERVER_CHALLENGING,
269 RXRPC_CONN_SERVER,
270 RXRPC_CONN_REMOTELY_ABORTED,
271 RXRPC_CONN_LOCALLY_ABORTED,
272 RXRPC_CONN_NETWORK_ERROR,
273 } state;
274 int error;
275 int debug_id;
276 unsigned int call_counter;
277 atomic_t serial;
278 atomic_t hi_serial;
279 u8 avail_calls;
280 u8 size_align;
281 u8 header_size;
282 u8 security_size;
283 u32 security_level;
284 u32 security_nonce;
285
286
287 __be32 epoch;
288 __be32 cid;
289 __be16 service_id;
290 u8 security_ix;
291 u8 in_clientflag;
292 u8 out_clientflag;
293};
294
295
296
297
298
299struct rxrpc_call {
300 struct rxrpc_connection *conn;
301 struct rxrpc_sock *socket;
302 struct timer_list lifetimer;
303 struct timer_list deadspan;
304 struct timer_list ack_timer;
305 struct timer_list resend_timer;
306 struct work_struct destroyer;
307 struct work_struct processor;
308 struct list_head link;
309 struct list_head error_link;
310 struct list_head accept_link;
311 struct rb_node sock_node;
312 struct rb_node conn_node;
313 struct sk_buff_head rx_queue;
314 struct sk_buff_head rx_oos_queue;
315 struct sk_buff *tx_pending;
316 wait_queue_head_t tx_waitq;
317 unsigned long user_call_ID;
318 unsigned long creation_jif;
319 unsigned long flags;
320#define RXRPC_CALL_RELEASED 0
321#define RXRPC_CALL_TERMINAL_MSG 1
322#define RXRPC_CALL_RCVD_LAST 2
323#define RXRPC_CALL_RUN_RTIMER 3
324#define RXRPC_CALL_TX_SOFT_ACK 4
325#define RXRPC_CALL_PROC_BUSY 5
326#define RXRPC_CALL_INIT_ACCEPT 6
327#define RXRPC_CALL_HAS_USERID 7
328#define RXRPC_CALL_EXPECT_OOS 8
329 unsigned long events;
330#define RXRPC_CALL_RCVD_ACKALL 0
331#define RXRPC_CALL_RCVD_BUSY 1
332#define RXRPC_CALL_RCVD_ABORT 2
333#define RXRPC_CALL_RCVD_ERROR 3
334#define RXRPC_CALL_ACK_FINAL 4
335#define RXRPC_CALL_ACK 5
336#define RXRPC_CALL_REJECT_BUSY 6
337#define RXRPC_CALL_ABORT 7
338#define RXRPC_CALL_CONN_ABORT 8
339#define RXRPC_CALL_RESEND_TIMER 9
340#define RXRPC_CALL_RESEND 10
341#define RXRPC_CALL_DRAIN_RX_OOS 11
342#define RXRPC_CALL_LIFE_TIMER 12
343#define RXRPC_CALL_ACCEPTED 13
344#define RXRPC_CALL_SECURED 14
345#define RXRPC_CALL_POST_ACCEPT 15
346#define RXRPC_CALL_RELEASE 16
347
348 spinlock_t lock;
349 rwlock_t state_lock;
350 atomic_t usage;
351 atomic_t sequence;
352 u32 abort_code;
353 enum {
354 RXRPC_CALL_CLIENT_SEND_REQUEST,
355 RXRPC_CALL_CLIENT_AWAIT_REPLY,
356 RXRPC_CALL_CLIENT_RECV_REPLY,
357 RXRPC_CALL_CLIENT_FINAL_ACK,
358 RXRPC_CALL_SERVER_SECURING,
359 RXRPC_CALL_SERVER_ACCEPTING,
360 RXRPC_CALL_SERVER_RECV_REQUEST,
361 RXRPC_CALL_SERVER_ACK_REQUEST,
362 RXRPC_CALL_SERVER_SEND_REPLY,
363 RXRPC_CALL_SERVER_AWAIT_ACK,
364 RXRPC_CALL_COMPLETE,
365 RXRPC_CALL_SERVER_BUSY,
366 RXRPC_CALL_REMOTELY_ABORTED,
367 RXRPC_CALL_LOCALLY_ABORTED,
368 RXRPC_CALL_NETWORK_ERROR,
369 RXRPC_CALL_DEAD,
370 } state;
371 int debug_id;
372 u8 channel;
373
374
375 u8 acks_head;
376 u8 acks_tail;
377 u8 acks_winsz;
378 u8 acks_unacked;
379 int acks_latest;
380 rxrpc_seq_t acks_hard;
381 unsigned long *acks_window;
382
383
384
385
386 rxrpc_seq_t rx_data_expect;
387 rxrpc_seq_t rx_data_post;
388 rxrpc_seq_t rx_data_recv;
389 rxrpc_seq_t rx_data_eaten;
390 rxrpc_seq_t rx_first_oos;
391 rxrpc_seq_t ackr_win_top;
392 rxrpc_seq_net_t ackr_prev_seq;
393 u8 ackr_reason;
394 __be32 ackr_serial;
395 atomic_t ackr_not_idle;
396
397
398#define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG)
399 unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1];
400
401 struct hlist_node hash_node;
402 unsigned long hash_key;
403 u8 in_clientflag;
404 struct rxrpc_local *local;
405 sa_family_t proto;
406
407 __be32 cid;
408 __be32 call_id;
409 __be32 epoch;
410 __be16 service_id;
411 union {
412 __be32 ipv4_addr;
413 __u8 ipv6_addr[16];
414 } peer_ip;
415};
416
417
418
419
420static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code)
421{
422 write_lock_bh(&call->state_lock);
423 if (call->state < RXRPC_CALL_COMPLETE) {
424 call->abort_code = abort_code;
425 call->state = RXRPC_CALL_LOCALLY_ABORTED;
426 set_bit(RXRPC_CALL_ABORT, &call->events);
427 }
428 write_unlock_bh(&call->state_lock);
429}
430
431
432
433
434extern atomic_t rxrpc_n_skbs;
435extern __be32 rxrpc_epoch;
436extern atomic_t rxrpc_debug_id;
437extern struct workqueue_struct *rxrpc_workqueue;
438
439
440
441
442void rxrpc_accept_incoming_calls(struct work_struct *);
443struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long);
444int rxrpc_reject_call(struct rxrpc_sock *);
445
446
447
448
449extern unsigned rxrpc_requested_ack_delay;
450extern unsigned rxrpc_soft_ack_delay;
451extern unsigned rxrpc_idle_ack_delay;
452extern unsigned rxrpc_rx_window_size;
453extern unsigned rxrpc_rx_mtu;
454extern unsigned rxrpc_rx_jumbo_max;
455
456void __rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool);
457void rxrpc_propose_ACK(struct rxrpc_call *, u8, __be32, bool);
458void rxrpc_process_call(struct work_struct *);
459
460
461
462
463extern unsigned rxrpc_max_call_lifetime;
464extern unsigned rxrpc_dead_call_expiry;
465extern struct kmem_cache *rxrpc_call_jar;
466extern struct list_head rxrpc_calls;
467extern rwlock_t rxrpc_call_lock;
468
469struct rxrpc_call *rxrpc_find_call_hash(u8, __be32, __be32, __be32,
470 __be16, void *, sa_family_t, const u8 *);
471struct rxrpc_call *rxrpc_get_client_call(struct rxrpc_sock *,
472 struct rxrpc_transport *,
473 struct rxrpc_conn_bundle *,
474 unsigned long, int, gfp_t);
475struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *,
476 struct rxrpc_connection *,
477 struct rxrpc_header *, gfp_t);
478struct rxrpc_call *rxrpc_find_server_call(struct rxrpc_sock *, unsigned long);
479void rxrpc_release_call(struct rxrpc_call *);
480void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
481void __rxrpc_put_call(struct rxrpc_call *);
482void __exit rxrpc_destroy_all_calls(void);
483
484
485
486
487extern unsigned rxrpc_connection_expiry;
488extern struct list_head rxrpc_connections;
489extern rwlock_t rxrpc_connection_lock;
490
491struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *,
492 struct rxrpc_transport *,
493 struct key *, __be16, gfp_t);
494void rxrpc_put_bundle(struct rxrpc_transport *, struct rxrpc_conn_bundle *);
495int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_transport *,
496 struct rxrpc_conn_bundle *, struct rxrpc_call *, gfp_t);
497void rxrpc_put_connection(struct rxrpc_connection *);
498void __exit rxrpc_destroy_all_connections(void);
499struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *,
500 struct rxrpc_header *);
501extern struct rxrpc_connection *
502rxrpc_incoming_connection(struct rxrpc_transport *, struct rxrpc_header *,
503 gfp_t);
504
505
506
507
508void rxrpc_process_connection(struct work_struct *);
509void rxrpc_reject_packet(struct rxrpc_local *, struct sk_buff *);
510void rxrpc_reject_packets(struct work_struct *);
511
512
513
514
515void rxrpc_UDP_error_report(struct sock *);
516void rxrpc_UDP_error_handler(struct work_struct *);
517
518
519
520
521extern const char *rxrpc_pkts[];
522
523void rxrpc_data_ready(struct sock *);
524int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, bool);
525void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *);
526
527
528
529
530extern rwlock_t rxrpc_local_lock;
531
532struct rxrpc_local *rxrpc_lookup_local(struct sockaddr_rxrpc *);
533void rxrpc_put_local(struct rxrpc_local *);
534void __exit rxrpc_destroy_all_locals(void);
535
536
537
538
539extern struct key_type key_type_rxrpc;
540extern struct key_type key_type_rxrpc_s;
541
542int rxrpc_request_key(struct rxrpc_sock *, char __user *, int);
543int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int);
544int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t,
545 u32);
546
547
548
549
550extern unsigned rxrpc_resend_timeout;
551
552int rxrpc_send_packet(struct rxrpc_transport *, struct sk_buff *);
553int rxrpc_client_sendmsg(struct rxrpc_sock *, struct rxrpc_transport *,
554 struct msghdr *, size_t);
555int rxrpc_server_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
556
557
558
559
560struct rxrpc_peer *rxrpc_get_peer(struct sockaddr_rxrpc *, gfp_t);
561void rxrpc_put_peer(struct rxrpc_peer *);
562struct rxrpc_peer *rxrpc_find_peer(struct rxrpc_local *, __be32, __be16);
563void __exit rxrpc_destroy_all_peers(void);
564
565
566
567
568extern const char *const rxrpc_call_states[];
569extern const struct file_operations rxrpc_call_seq_fops;
570extern const struct file_operations rxrpc_connection_seq_fops;
571
572
573
574
575void rxrpc_remove_user_ID(struct rxrpc_sock *, struct rxrpc_call *);
576int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int);
577
578
579
580
581int rxrpc_register_security(struct rxrpc_security *);
582void rxrpc_unregister_security(struct rxrpc_security *);
583int rxrpc_init_client_conn_security(struct rxrpc_connection *);
584int rxrpc_init_server_conn_security(struct rxrpc_connection *);
585int rxrpc_secure_packet(const struct rxrpc_call *, struct sk_buff *, size_t,
586 void *);
587int rxrpc_verify_packet(const struct rxrpc_call *, struct sk_buff *, u32 *);
588void rxrpc_clear_conn_security(struct rxrpc_connection *);
589
590
591
592
593void rxrpc_packet_destructor(struct sk_buff *);
594
595
596
597
598extern unsigned rxrpc_transport_expiry;
599
600struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *,
601 struct rxrpc_peer *, gfp_t);
602void rxrpc_put_transport(struct rxrpc_transport *);
603void __exit rxrpc_destroy_all_transports(void);
604struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *,
605 struct rxrpc_peer *);
606
607
608
609
610#ifdef CONFIG_SYSCTL
611extern int __init rxrpc_sysctl_init(void);
612extern void rxrpc_sysctl_exit(void);
613#else
614static inline int __init rxrpc_sysctl_init(void) { return 0; }
615static inline void rxrpc_sysctl_exit(void) {}
616#endif
617
618
619
620
621extern unsigned int rxrpc_debug;
622
623#define dbgprintk(FMT,...) \
624 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
625
626#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
627#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
628#define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
629#define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
630#define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__)
631
632
633#if defined(__KDEBUG)
634#define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
635#define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
636#define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
637#define _proto(FMT,...) kproto(FMT,##__VA_ARGS__)
638#define _net(FMT,...) knet(FMT,##__VA_ARGS__)
639
640#elif defined(CONFIG_AF_RXRPC_DEBUG)
641#define RXRPC_DEBUG_KENTER 0x01
642#define RXRPC_DEBUG_KLEAVE 0x02
643#define RXRPC_DEBUG_KDEBUG 0x04
644#define RXRPC_DEBUG_KPROTO 0x08
645#define RXRPC_DEBUG_KNET 0x10
646
647#define _enter(FMT,...) \
648do { \
649 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \
650 kenter(FMT,##__VA_ARGS__); \
651} while (0)
652
653#define _leave(FMT,...) \
654do { \
655 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \
656 kleave(FMT,##__VA_ARGS__); \
657} while (0)
658
659#define _debug(FMT,...) \
660do { \
661 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \
662 kdebug(FMT,##__VA_ARGS__); \
663} while (0)
664
665#define _proto(FMT,...) \
666do { \
667 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \
668 kproto(FMT,##__VA_ARGS__); \
669} while (0)
670
671#define _net(FMT,...) \
672do { \
673 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \
674 knet(FMT,##__VA_ARGS__); \
675} while (0)
676
677#else
678#define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
679#define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
680#define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
681#define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__)
682#define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__)
683#endif
684
685
686
687
688#if 1
689
690#define ASSERT(X) \
691do { \
692 if (unlikely(!(X))) { \
693 printk(KERN_ERR "\n"); \
694 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
695 BUG(); \
696 } \
697} while(0)
698
699#define ASSERTCMP(X, OP, Y) \
700do { \
701 if (unlikely(!((X) OP (Y)))) { \
702 printk(KERN_ERR "\n"); \
703 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
704 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
705 (unsigned long)(X), (unsigned long)(Y)); \
706 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
707 (unsigned long)(X), (unsigned long)(Y)); \
708 BUG(); \
709 } \
710} while(0)
711
712#define ASSERTIF(C, X) \
713do { \
714 if (unlikely((C) && !(X))) { \
715 printk(KERN_ERR "\n"); \
716 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
717 BUG(); \
718 } \
719} while(0)
720
721#define ASSERTIFCMP(C, X, OP, Y) \
722do { \
723 if (unlikely((C) && !((X) OP (Y)))) { \
724 printk(KERN_ERR "\n"); \
725 printk(KERN_ERR "RxRPC: Assertion failed\n"); \
726 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
727 (unsigned long)(X), (unsigned long)(Y)); \
728 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
729 (unsigned long)(X), (unsigned long)(Y)); \
730 BUG(); \
731 } \
732} while(0)
733
734#else
735
736#define ASSERT(X) \
737do { \
738} while(0)
739
740#define ASSERTCMP(X, OP, Y) \
741do { \
742} while(0)
743
744#define ASSERTIF(C, X) \
745do { \
746} while(0)
747
748#define ASSERTIFCMP(C, X, OP, Y) \
749do { \
750} while(0)
751
752#endif
753
754
755
756
757static inline void __rxrpc_new_skb(struct sk_buff *skb, const char *fn)
758{
759
760
761}
762
763#define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__)
764
765static inline void __rxrpc_kill_skb(struct sk_buff *skb, const char *fn)
766{
767
768
769}
770
771#define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__)
772
773static inline void __rxrpc_free_skb(struct sk_buff *skb, const char *fn)
774{
775 if (skb) {
776 CHECK_SLAB_OKAY(&skb->users);
777
778
779
780 kfree_skb(skb);
781 }
782}
783
784#define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__)
785
786static inline void rxrpc_purge_queue(struct sk_buff_head *list)
787{
788 struct sk_buff *skb;
789 while ((skb = skb_dequeue((list))) != NULL)
790 rxrpc_free_skb(skb);
791}
792
793static inline void __rxrpc_get_local(struct rxrpc_local *local, const char *f)
794{
795 CHECK_SLAB_OKAY(&local->usage);
796 if (atomic_inc_return(&local->usage) == 1)
797 printk("resurrected (%s)\n", f);
798}
799
800#define rxrpc_get_local(LOCAL) __rxrpc_get_local((LOCAL), __func__)
801
802#define rxrpc_get_call(CALL) \
803do { \
804 CHECK_SLAB_OKAY(&(CALL)->usage); \
805 if (atomic_inc_return(&(CALL)->usage) == 1) \
806 BUG(); \
807} while(0)
808
809#define rxrpc_put_call(CALL) \
810do { \
811 __rxrpc_put_call(CALL); \
812} while(0)
813