]>
Commit | Line | Data |
---|---|---|
17926a79 DH |
1 | /* AF_RXRPC internal definitions |
2 | * | |
3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
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. | |
10 | */ | |
11 | ||
be6e6707 | 12 | #include <linux/atomic.h> |
e0e4d82f | 13 | #include <net/sock.h> |
be6e6707 | 14 | #include <net/af_rxrpc.h> |
17926a79 DH |
15 | #include <rxrpc/packet.h> |
16 | ||
17 | #if 0 | |
18 | #define CHECK_SLAB_OKAY(X) \ | |
19 | BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ | |
20 | (POISON_FREE << 8 | POISON_FREE)) | |
21 | #else | |
b4f1342f | 22 | #define CHECK_SLAB_OKAY(X) do {} while (0) |
17926a79 DH |
23 | #endif |
24 | ||
17926a79 DH |
25 | #define FCRYPT_BSIZE 8 |
26 | struct rxrpc_crypt { | |
27 | union { | |
28 | u8 x[FCRYPT_BSIZE]; | |
91e916cf | 29 | __be32 n[2]; |
17926a79 DH |
30 | }; |
31 | } __attribute__((aligned(8))); | |
32 | ||
651350d1 DH |
33 | #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) |
34 | #define rxrpc_queue_delayed_work(WS,D) \ | |
35 | queue_delayed_work(rxrpc_workqueue, (WS), (D)) | |
36 | ||
37 | #define rxrpc_queue_call(CALL) rxrpc_queue_work(&(CALL)->processor) | |
38 | #define rxrpc_queue_conn(CONN) rxrpc_queue_work(&(CONN)->processor) | |
17926a79 | 39 | |
cc8feb8e DH |
40 | struct rxrpc_connection; |
41 | ||
17926a79 DH |
42 | /* |
43 | * sk_state for RxRPC sockets | |
44 | */ | |
45 | enum { | |
2341e077 DH |
46 | RXRPC_UNBOUND = 0, |
47 | RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ | |
17926a79 | 48 | RXRPC_CLIENT_BOUND, /* client local address bound */ |
17926a79 DH |
49 | RXRPC_SERVER_BOUND, /* server local address bound */ |
50 | RXRPC_SERVER_LISTENING, /* server listening for connections */ | |
51 | RXRPC_CLOSE, /* socket is being closed */ | |
52 | }; | |
53 | ||
54 | /* | |
55 | * RxRPC socket definition | |
56 | */ | |
57 | struct rxrpc_sock { | |
58 | /* WARNING: sk has to be the first member */ | |
59 | struct sock sk; | |
651350d1 | 60 | rxrpc_interceptor_t interceptor; /* kernel service Rx interceptor function */ |
17926a79 | 61 | struct rxrpc_local *local; /* local endpoint */ |
17926a79 DH |
62 | struct list_head listen_link; /* link in the local endpoint's listen list */ |
63 | struct list_head secureq; /* calls awaiting connection security clearance */ | |
64 | struct list_head acceptq; /* calls awaiting acceptance */ | |
65 | struct key *key; /* security for this socket */ | |
66 | struct key *securities; /* list of server security descriptors */ | |
67 | struct rb_root calls; /* outstanding calls on this socket */ | |
68 | unsigned long flags; | |
2341e077 | 69 | #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ |
17926a79 DH |
70 | rwlock_t call_lock; /* lock for calls */ |
71 | u32 min_sec_level; /* minimum security level */ | |
72 | #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT | |
cc8feb8e DH |
73 | bool exclusive; /* Exclusive connection for a client socket */ |
74 | sa_family_t family; /* Protocol family created with */ | |
17926a79 | 75 | struct sockaddr_rxrpc srx; /* local address */ |
2341e077 | 76 | struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
17926a79 DH |
77 | }; |
78 | ||
79 | #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) | |
80 | ||
0d12f8a4 DH |
81 | /* |
82 | * CPU-byteorder normalised Rx packet header. | |
83 | */ | |
84 | struct rxrpc_host_header { | |
85 | u32 epoch; /* client boot timestamp */ | |
86 | u32 cid; /* connection and channel ID */ | |
87 | u32 callNumber; /* call ID (0 for connection-level packets) */ | |
88 | u32 seq; /* sequence number of pkt in call stream */ | |
89 | u32 serial; /* serial number of pkt sent to network */ | |
90 | u8 type; /* packet type */ | |
91 | u8 flags; /* packet flags */ | |
92 | u8 userStatus; /* app-layer defined status */ | |
93 | u8 securityIndex; /* security protocol ID */ | |
94 | union { | |
95 | u16 _rsvd; /* reserved */ | |
96 | u16 cksum; /* kerberos security checksum */ | |
97 | }; | |
98 | u16 serviceId; /* service ID */ | |
99 | } __packed; | |
100 | ||
17926a79 DH |
101 | /* |
102 | * RxRPC socket buffer private variables | |
103 | * - max 48 bytes (struct sk_buff::cb) | |
104 | */ | |
105 | struct rxrpc_skb_priv { | |
106 | struct rxrpc_call *call; /* call with which associated */ | |
107 | unsigned long resend_at; /* time in jiffies at which to resend */ | |
108 | union { | |
95c96174 | 109 | unsigned int offset; /* offset into buffer of next read */ |
17926a79 DH |
110 | int remain; /* amount of space remaining for next write */ |
111 | u32 error; /* network error code */ | |
112 | bool need_resend; /* T if needs resending */ | |
113 | }; | |
114 | ||
0d12f8a4 | 115 | struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ |
17926a79 DH |
116 | }; |
117 | ||
118 | #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) | |
119 | ||
17926a79 DH |
120 | enum rxrpc_command { |
121 | RXRPC_CMD_SEND_DATA, /* send data message */ | |
122 | RXRPC_CMD_SEND_ABORT, /* request abort generation */ | |
123 | RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ | |
124 | RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ | |
125 | }; | |
126 | ||
127 | /* | |
128 | * RxRPC security module interface | |
129 | */ | |
130 | struct rxrpc_security { | |
17926a79 DH |
131 | const char *name; /* name of this service */ |
132 | u8 security_index; /* security type provided */ | |
133 | ||
648af7fc DH |
134 | /* Initialise a security service */ |
135 | int (*init)(void); | |
136 | ||
137 | /* Clean up a security service */ | |
138 | void (*exit)(void); | |
139 | ||
17926a79 DH |
140 | /* initialise a connection's security */ |
141 | int (*init_connection_security)(struct rxrpc_connection *); | |
142 | ||
143 | /* prime a connection's packet security */ | |
144 | void (*prime_packet_security)(struct rxrpc_connection *); | |
145 | ||
146 | /* impose security on a packet */ | |
147 | int (*secure_packet)(const struct rxrpc_call *, | |
148 | struct sk_buff *, | |
149 | size_t, | |
150 | void *); | |
151 | ||
152 | /* verify the security on a received packet */ | |
153 | int (*verify_packet)(const struct rxrpc_call *, struct sk_buff *, | |
154 | u32 *); | |
155 | ||
156 | /* issue a challenge */ | |
157 | int (*issue_challenge)(struct rxrpc_connection *); | |
158 | ||
159 | /* respond to a challenge */ | |
160 | int (*respond_to_challenge)(struct rxrpc_connection *, | |
161 | struct sk_buff *, | |
162 | u32 *); | |
163 | ||
164 | /* verify a response */ | |
165 | int (*verify_response)(struct rxrpc_connection *, | |
166 | struct sk_buff *, | |
167 | u32 *); | |
168 | ||
169 | /* clear connection security */ | |
170 | void (*clear)(struct rxrpc_connection *); | |
171 | }; | |
172 | ||
173 | /* | |
4f95dd78 DH |
174 | * RxRPC local transport endpoint description |
175 | * - owned by a single AF_RXRPC socket | |
176 | * - pointed to by transport socket struct sk_user_data | |
17926a79 DH |
177 | */ |
178 | struct rxrpc_local { | |
4f95dd78 DH |
179 | struct rcu_head rcu; |
180 | atomic_t usage; | |
181 | struct list_head link; | |
17926a79 | 182 | struct socket *socket; /* my UDP socket */ |
4f95dd78 | 183 | struct work_struct processor; |
17926a79 | 184 | struct list_head services; /* services listening on this endpoint */ |
17926a79 DH |
185 | struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ |
186 | struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */ | |
187 | struct sk_buff_head reject_queue; /* packets awaiting rejection */ | |
44ba0698 | 188 | struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ |
4f95dd78 | 189 | struct mutex conn_lock; /* Client connection creation lock */ |
17926a79 DH |
190 | spinlock_t lock; /* access lock */ |
191 | rwlock_t services_lock; /* lock for services list */ | |
17926a79 | 192 | int debug_id; /* debug ID for printks */ |
4f95dd78 | 193 | bool dead; |
17926a79 DH |
194 | struct sockaddr_rxrpc srx; /* local address */ |
195 | }; | |
196 | ||
197 | /* | |
198 | * RxRPC remote transport endpoint definition | |
be6e6707 | 199 | * - matched by local endpoint, remote port, address and protocol type |
17926a79 DH |
200 | */ |
201 | struct rxrpc_peer { | |
be6e6707 DH |
202 | struct rcu_head rcu; /* This must be first */ |
203 | atomic_t usage; | |
204 | unsigned long hash_key; | |
205 | struct hlist_node hash_link; | |
206 | struct rxrpc_local *local; | |
f66d7490 DH |
207 | struct hlist_head error_targets; /* targets for net error distribution */ |
208 | struct work_struct error_distributor; | |
17926a79 | 209 | spinlock_t lock; /* access lock */ |
95c96174 ED |
210 | unsigned int if_mtu; /* interface MTU for this peer */ |
211 | unsigned int mtu; /* network MTU for this peer */ | |
212 | unsigned int maxdata; /* data size (MTU - hdrsize) */ | |
17926a79 DH |
213 | unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ |
214 | int debug_id; /* debug ID for printks */ | |
f66d7490 DH |
215 | int error_report; /* Net (+0) or local (+1000000) to distribute */ |
216 | #define RXRPC_LOCAL_ERROR_OFFSET 1000000 | |
17926a79 DH |
217 | struct sockaddr_rxrpc srx; /* remote address */ |
218 | ||
219 | /* calculated RTT cache */ | |
220 | #define RXRPC_RTT_CACHE_SIZE 32 | |
221 | suseconds_t rtt; /* current RTT estimate (in uS) */ | |
95c96174 ED |
222 | unsigned int rtt_point; /* next entry at which to insert */ |
223 | unsigned int rtt_usage; /* amount of cache actually used */ | |
17926a79 DH |
224 | suseconds_t rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* calculated RTT cache */ |
225 | }; | |
226 | ||
227 | /* | |
228 | * RxRPC point-to-point transport / connection manager definition | |
229 | * - handles a bundle of connections between two endpoints | |
230 | * - matched by { local, peer } | |
231 | */ | |
232 | struct rxrpc_transport { | |
233 | struct rxrpc_local *local; /* local transport endpoint */ | |
234 | struct rxrpc_peer *peer; /* remote transport endpoint */ | |
17926a79 | 235 | struct rb_root bundles; /* client connection bundles on this transport */ |
17926a79 DH |
236 | struct rb_root server_conns; /* server connections on this transport */ |
237 | struct list_head link; /* link in master session list */ | |
22a3f9a2 | 238 | unsigned long put_time; /* time at which to reap */ |
17926a79 DH |
239 | spinlock_t client_lock; /* client connection allocation lock */ |
240 | rwlock_t conn_lock; /* lock for active/dead connections */ | |
241 | atomic_t usage; | |
242 | int debug_id; /* debug ID for printks */ | |
17926a79 DH |
243 | }; |
244 | ||
245 | /* | |
246 | * RxRPC client connection bundle | |
247 | * - matched by { transport, service_id, key } | |
248 | */ | |
249 | struct rxrpc_conn_bundle { | |
250 | struct rb_node node; /* node in transport's lookup tree */ | |
251 | struct list_head unused_conns; /* unused connections in this bundle */ | |
252 | struct list_head avail_conns; /* available connections in this bundle */ | |
253 | struct list_head busy_conns; /* busy connections in this bundle */ | |
254 | struct key *key; /* security for this bundle */ | |
255 | wait_queue_head_t chanwait; /* wait for channel to become available */ | |
256 | atomic_t usage; | |
257 | int debug_id; /* debug ID for printks */ | |
258 | unsigned short num_conns; /* number of connections in this bundle */ | |
0d12f8a4 | 259 | u16 service_id; /* Service ID for this bundle */ |
4e36a95e | 260 | u8 security_ix; /* security type */ |
17926a79 DH |
261 | }; |
262 | ||
19ffa01c DH |
263 | /* |
264 | * Keys for matching a connection. | |
265 | */ | |
266 | struct rxrpc_conn_proto { | |
267 | unsigned long hash_key; | |
268 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
269 | u32 epoch; /* epoch of this connection */ | |
270 | u32 cid; /* connection ID */ | |
271 | u8 in_clientflag; /* RXRPC_CLIENT_INITIATED if we are server */ | |
272 | u8 addr_size; /* Size of the address */ | |
273 | sa_family_t family; /* Transport protocol */ | |
274 | __be16 port; /* Peer UDP/UDP6 port */ | |
275 | union { /* Peer address */ | |
276 | struct in_addr ipv4_addr; | |
277 | struct in6_addr ipv6_addr; | |
278 | u32 raw_addr[0]; | |
279 | }; | |
280 | }; | |
281 | ||
282 | struct rxrpc_conn_parameters { | |
283 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
284 | struct rxrpc_peer *peer; /* Remote endpoint */ | |
285 | struct key *key; /* Security details */ | |
286 | bool exclusive; /* T if conn is exclusive */ | |
287 | u16 service_id; /* Service ID for this connection */ | |
288 | u32 security_level; /* Security level selected */ | |
289 | }; | |
290 | ||
17926a79 DH |
291 | /* |
292 | * RxRPC connection definition | |
293 | * - matched by { transport, service_id, conn_id, direction, key } | |
294 | * - each connection can only handle four simultaneous calls | |
295 | */ | |
296 | struct rxrpc_connection { | |
297 | struct rxrpc_transport *trans; /* transport session */ | |
298 | struct rxrpc_conn_bundle *bundle; /* connection bundle (client) */ | |
19ffa01c DH |
299 | struct rxrpc_conn_proto proto; |
300 | struct rxrpc_conn_parameters params; | |
301 | ||
17926a79 DH |
302 | struct work_struct processor; /* connection event processor */ |
303 | struct rb_node node; /* node in transport's lookup tree */ | |
304 | struct list_head link; /* link in master connection list */ | |
305 | struct list_head bundle_link; /* link in bundle */ | |
306 | struct rb_root calls; /* calls on this connection */ | |
307 | struct sk_buff_head rx_queue; /* received conn-level packets */ | |
308 | struct rxrpc_call *channels[RXRPC_MAXCALLS]; /* channels (active calls) */ | |
648af7fc | 309 | const struct rxrpc_security *security; /* applied security module */ |
17926a79 | 310 | struct key *server_key; /* security for this service */ |
1afe593b | 311 | struct crypto_skcipher *cipher; /* encryption handle */ |
17926a79 | 312 | struct rxrpc_crypt csum_iv; /* packet checksum base */ |
4a3388c8 DH |
313 | unsigned long flags; |
314 | #define RXRPC_CONN_HAS_IDR 0 /* - Has a client conn ID assigned */ | |
17926a79 DH |
315 | unsigned long events; |
316 | #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */ | |
22a3f9a2 | 317 | unsigned long put_time; /* time at which to reap */ |
17926a79 DH |
318 | rwlock_t lock; /* access lock */ |
319 | spinlock_t state_lock; /* state-change lock */ | |
320 | atomic_t usage; | |
17926a79 DH |
321 | enum { /* current state of connection */ |
322 | RXRPC_CONN_UNUSED, /* - connection not yet attempted */ | |
323 | RXRPC_CONN_CLIENT, /* - client connection */ | |
324 | RXRPC_CONN_SERVER_UNSECURED, /* - server unsecured connection */ | |
325 | RXRPC_CONN_SERVER_CHALLENGING, /* - server challenging for security */ | |
326 | RXRPC_CONN_SERVER, /* - server secured connection */ | |
327 | RXRPC_CONN_REMOTELY_ABORTED, /* - conn aborted by peer */ | |
328 | RXRPC_CONN_LOCALLY_ABORTED, /* - conn aborted locally */ | |
329 | RXRPC_CONN_NETWORK_ERROR, /* - conn terminated by network error */ | |
330 | } state; | |
dc44b3a0 DH |
331 | u32 local_abort; /* local abort code */ |
332 | u32 remote_abort; /* remote abort code */ | |
333 | int error; /* local error incurred */ | |
17926a79 | 334 | int debug_id; /* debug ID for printks */ |
95c96174 | 335 | unsigned int call_counter; /* call ID counter */ |
17926a79 DH |
336 | atomic_t serial; /* packet serial number counter */ |
337 | atomic_t hi_serial; /* highest serial number received */ | |
338 | u8 avail_calls; /* number of calls available */ | |
339 | u8 size_align; /* data size alignment (for security) */ | |
340 | u8 header_size; /* rxrpc + security header size */ | |
341 | u8 security_size; /* security header size */ | |
17926a79 | 342 | u32 security_nonce; /* response re-use preventer */ |
17926a79 | 343 | u8 security_ix; /* security type */ |
17926a79 DH |
344 | u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
345 | }; | |
346 | ||
5b8848d1 DH |
347 | /* |
348 | * Flags in call->flags. | |
349 | */ | |
350 | enum rxrpc_call_flag { | |
351 | RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ | |
352 | RXRPC_CALL_TERMINAL_MSG, /* call has given the socket its final message */ | |
353 | RXRPC_CALL_RCVD_LAST, /* all packets received */ | |
354 | RXRPC_CALL_RUN_RTIMER, /* Tx resend timer started */ | |
355 | RXRPC_CALL_TX_SOFT_ACK, /* sent some soft ACKs */ | |
356 | RXRPC_CALL_PROC_BUSY, /* the processor is busy */ | |
357 | RXRPC_CALL_INIT_ACCEPT, /* acceptance was initiated */ | |
358 | RXRPC_CALL_HAS_USERID, /* has a user ID attached */ | |
359 | RXRPC_CALL_EXPECT_OOS, /* expect out of sequence packets */ | |
360 | }; | |
361 | ||
362 | /* | |
363 | * Events that can be raised on a call. | |
364 | */ | |
365 | enum rxrpc_call_event { | |
4c198ad1 DH |
366 | RXRPC_CALL_EV_RCVD_ACKALL, /* ACKALL or reply received */ |
367 | RXRPC_CALL_EV_RCVD_BUSY, /* busy packet received */ | |
368 | RXRPC_CALL_EV_RCVD_ABORT, /* abort packet received */ | |
369 | RXRPC_CALL_EV_RCVD_ERROR, /* network error received */ | |
370 | RXRPC_CALL_EV_ACK_FINAL, /* need to generate final ACK (and release call) */ | |
371 | RXRPC_CALL_EV_ACK, /* need to generate ACK */ | |
372 | RXRPC_CALL_EV_REJECT_BUSY, /* need to generate busy message */ | |
373 | RXRPC_CALL_EV_ABORT, /* need to generate abort */ | |
374 | RXRPC_CALL_EV_CONN_ABORT, /* local connection abort generated */ | |
375 | RXRPC_CALL_EV_RESEND_TIMER, /* Tx resend timer expired */ | |
376 | RXRPC_CALL_EV_RESEND, /* Tx resend required */ | |
377 | RXRPC_CALL_EV_DRAIN_RX_OOS, /* drain the Rx out of sequence queue */ | |
378 | RXRPC_CALL_EV_LIFE_TIMER, /* call's lifetimer ran out */ | |
379 | RXRPC_CALL_EV_ACCEPTED, /* incoming call accepted by userspace app */ | |
380 | RXRPC_CALL_EV_SECURED, /* incoming call's connection is now secure */ | |
381 | RXRPC_CALL_EV_POST_ACCEPT, /* need to post an "accept?" message to the app */ | |
382 | RXRPC_CALL_EV_RELEASE, /* need to release the call's resources */ | |
5b8848d1 DH |
383 | }; |
384 | ||
385 | /* | |
386 | * The states that a call can be in. | |
387 | */ | |
388 | enum rxrpc_call_state { | |
389 | RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ | |
390 | RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ | |
391 | RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ | |
392 | RXRPC_CALL_CLIENT_FINAL_ACK, /* - client sending final ACK phase */ | |
393 | RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ | |
394 | RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ | |
395 | RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ | |
396 | RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ | |
397 | RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ | |
398 | RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ | |
399 | RXRPC_CALL_COMPLETE, /* - call completed */ | |
400 | RXRPC_CALL_SERVER_BUSY, /* - call rejected by busy server */ | |
401 | RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ | |
402 | RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ | |
403 | RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ | |
404 | RXRPC_CALL_DEAD, /* - call is dead */ | |
405 | NR__RXRPC_CALL_STATES | |
406 | }; | |
407 | ||
17926a79 DH |
408 | /* |
409 | * RxRPC call definition | |
410 | * - matched by { connection, call_id } | |
411 | */ | |
412 | struct rxrpc_call { | |
413 | struct rxrpc_connection *conn; /* connection carrying call */ | |
414 | struct rxrpc_sock *socket; /* socket responsible */ | |
415 | struct timer_list lifetimer; /* lifetime remaining on call */ | |
416 | struct timer_list deadspan; /* reap timer for re-ACK'ing, etc */ | |
417 | struct timer_list ack_timer; /* ACK generation timer */ | |
418 | struct timer_list resend_timer; /* Tx resend timer */ | |
419 | struct work_struct destroyer; /* call destroyer */ | |
420 | struct work_struct processor; /* packet processor and ACK generator */ | |
421 | struct list_head link; /* link in master call list */ | |
f66d7490 | 422 | struct hlist_node error_link; /* link in error distribution list */ |
17926a79 DH |
423 | struct list_head accept_link; /* calls awaiting acceptance */ |
424 | struct rb_node sock_node; /* node in socket call tree */ | |
425 | struct rb_node conn_node; /* node in connection call tree */ | |
426 | struct sk_buff_head rx_queue; /* received packets */ | |
427 | struct sk_buff_head rx_oos_queue; /* packets received out of sequence */ | |
428 | struct sk_buff *tx_pending; /* Tx socket buffer being filled */ | |
429 | wait_queue_head_t tx_waitq; /* wait for Tx window space to become available */ | |
430 | unsigned long user_call_ID; /* user-defined call ID */ | |
431 | unsigned long creation_jif; /* time of call creation */ | |
432 | unsigned long flags; | |
17926a79 | 433 | unsigned long events; |
17926a79 DH |
434 | spinlock_t lock; |
435 | rwlock_t state_lock; /* lock for state transition */ | |
436 | atomic_t usage; | |
437 | atomic_t sequence; /* Tx data packet sequence counter */ | |
dc44b3a0 DH |
438 | u32 local_abort; /* local abort code */ |
439 | u32 remote_abort; /* remote abort code */ | |
f66d7490 DH |
440 | int error_report; /* Network error (ICMP/local transport) */ |
441 | int error; /* Local error incurred */ | |
5b8848d1 | 442 | enum rxrpc_call_state state : 8; /* current state of call */ |
17926a79 DH |
443 | int debug_id; /* debug ID for printks */ |
444 | u8 channel; /* connection channel occupied by this call */ | |
445 | ||
446 | /* transmission-phase ACK management */ | |
4e36a95e DH |
447 | u8 acks_head; /* offset into window of first entry */ |
448 | u8 acks_tail; /* offset into window of last entry */ | |
449 | u8 acks_winsz; /* size of un-ACK'd window */ | |
450 | u8 acks_unacked; /* lowest unacked packet in last ACK received */ | |
17926a79 DH |
451 | int acks_latest; /* serial number of latest ACK received */ |
452 | rxrpc_seq_t acks_hard; /* highest definitively ACK'd msg seq */ | |
453 | unsigned long *acks_window; /* sent packet window | |
454 | * - elements are pointers with LSB set if ACK'd | |
455 | */ | |
456 | ||
457 | /* receive-phase ACK management */ | |
458 | rxrpc_seq_t rx_data_expect; /* next data seq ID expected to be received */ | |
459 | rxrpc_seq_t rx_data_post; /* next data seq ID expected to be posted */ | |
460 | rxrpc_seq_t rx_data_recv; /* last data seq ID encountered by recvmsg */ | |
461 | rxrpc_seq_t rx_data_eaten; /* last data seq ID consumed by recvmsg */ | |
462 | rxrpc_seq_t rx_first_oos; /* first packet in rx_oos_queue (or 0) */ | |
463 | rxrpc_seq_t ackr_win_top; /* top of ACK window (rx_data_eaten is bottom) */ | |
0d12f8a4 | 464 | rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
4e36a95e | 465 | u8 ackr_reason; /* reason to ACK */ |
0d12f8a4 | 466 | rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
17926a79 DH |
467 | atomic_t ackr_not_idle; /* number of packets in Rx queue */ |
468 | ||
469 | /* received packet records, 1 bit per record */ | |
470 | #define RXRPC_ACKR_WINDOW_ASZ DIV_ROUND_UP(RXRPC_MAXACKS, BITS_PER_LONG) | |
471 | unsigned long ackr_window[RXRPC_ACKR_WINDOW_ASZ + 1]; | |
472 | ||
7727640c TS |
473 | struct hlist_node hash_node; |
474 | unsigned long hash_key; /* Full hash key */ | |
475 | u8 in_clientflag; /* Copy of conn->in_clientflag for hashing */ | |
476 | struct rxrpc_local *local; /* Local endpoint. Used for hashing. */ | |
19ffa01c | 477 | sa_family_t family; /* Frame protocol */ |
0d12f8a4 DH |
478 | u32 call_id; /* call ID on connection */ |
479 | u32 cid; /* connection ID plus channel index */ | |
480 | u32 epoch; /* epoch of this connection */ | |
481 | u16 service_id; /* service ID */ | |
7727640c TS |
482 | union { /* Peer IP address for hashing */ |
483 | __be32 ipv4_addr; | |
484 | __u8 ipv6_addr[16]; /* Anticipates eventual IPv6 support */ | |
485 | } peer_ip; | |
17926a79 DH |
486 | }; |
487 | ||
17926a79 DH |
488 | /* |
489 | * locally abort an RxRPC call | |
490 | */ | |
491 | static inline void rxrpc_abort_call(struct rxrpc_call *call, u32 abort_code) | |
492 | { | |
493 | write_lock_bh(&call->state_lock); | |
494 | if (call->state < RXRPC_CALL_COMPLETE) { | |
dc44b3a0 | 495 | call->local_abort = abort_code; |
17926a79 | 496 | call->state = RXRPC_CALL_LOCALLY_ABORTED; |
4c198ad1 | 497 | set_bit(RXRPC_CALL_EV_ABORT, &call->events); |
17926a79 DH |
498 | } |
499 | write_unlock_bh(&call->state_lock); | |
500 | } | |
501 | ||
502 | /* | |
651350d1 | 503 | * af_rxrpc.c |
17926a79 | 504 | */ |
651350d1 | 505 | extern atomic_t rxrpc_n_skbs; |
0d12f8a4 | 506 | extern u32 rxrpc_epoch; |
651350d1 DH |
507 | extern atomic_t rxrpc_debug_id; |
508 | extern struct workqueue_struct *rxrpc_workqueue; | |
17926a79 | 509 | |
19ffa01c | 510 | extern struct rxrpc_transport *rxrpc_name_to_transport(struct rxrpc_conn_parameters *, |
2341e077 | 511 | struct sockaddr *, |
19ffa01c | 512 | int, gfp_t); |
2341e077 | 513 | |
17926a79 | 514 | /* |
0d81a51a | 515 | * call_accept.c |
17926a79 | 516 | */ |
4f95dd78 | 517 | void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
c1b1203d JP |
518 | struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long); |
519 | int rxrpc_reject_call(struct rxrpc_sock *); | |
17926a79 DH |
520 | |
521 | /* | |
0d81a51a | 522 | * call_event.c |
17926a79 | 523 | */ |
0d12f8a4 DH |
524 | void __rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool); |
525 | void rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool); | |
c1b1203d | 526 | void rxrpc_process_call(struct work_struct *); |
17926a79 DH |
527 | |
528 | /* | |
0d81a51a | 529 | * call_object.c |
17926a79 | 530 | */ |
dad8aff7 DH |
531 | extern unsigned int rxrpc_max_call_lifetime; |
532 | extern unsigned int rxrpc_dead_call_expiry; | |
17926a79 DH |
533 | extern struct kmem_cache *rxrpc_call_jar; |
534 | extern struct list_head rxrpc_calls; | |
535 | extern rwlock_t rxrpc_call_lock; | |
536 | ||
0d12f8a4 DH |
537 | struct rxrpc_call *rxrpc_find_call_hash(struct rxrpc_host_header *, |
538 | void *, sa_family_t, const void *); | |
2341e077 DH |
539 | struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
540 | struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, | |
19ffa01c | 541 | struct rxrpc_conn_parameters *, |
c1b1203d JP |
542 | struct rxrpc_transport *, |
543 | struct rxrpc_conn_bundle *, | |
2341e077 | 544 | unsigned long, gfp_t); |
c1b1203d JP |
545 | struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *, |
546 | struct rxrpc_connection *, | |
42886ffe | 547 | struct sk_buff *); |
c1b1203d JP |
548 | void rxrpc_release_call(struct rxrpc_call *); |
549 | void rxrpc_release_calls_on_socket(struct rxrpc_sock *); | |
550 | void __rxrpc_put_call(struct rxrpc_call *); | |
551 | void __exit rxrpc_destroy_all_calls(void); | |
17926a79 | 552 | |
4a3388c8 DH |
553 | /* |
554 | * conn_client.c | |
555 | */ | |
556 | extern struct idr rxrpc_client_conn_ids; | |
557 | ||
558 | int rxrpc_get_client_connection_id(struct rxrpc_connection *, | |
559 | struct rxrpc_transport *, gfp_t); | |
560 | void rxrpc_put_client_connection_id(struct rxrpc_connection *); | |
561 | ||
17926a79 | 562 | /* |
0d81a51a DH |
563 | * conn_event.c |
564 | */ | |
565 | void rxrpc_process_connection(struct work_struct *); | |
566 | void rxrpc_reject_packet(struct rxrpc_local *, struct sk_buff *); | |
4f95dd78 | 567 | void rxrpc_reject_packets(struct rxrpc_local *); |
0d81a51a DH |
568 | |
569 | /* | |
570 | * conn_object.c | |
17926a79 | 571 | */ |
dad8aff7 | 572 | extern unsigned int rxrpc_connection_expiry; |
17926a79 DH |
573 | extern struct list_head rxrpc_connections; |
574 | extern rwlock_t rxrpc_connection_lock; | |
575 | ||
c1b1203d JP |
576 | struct rxrpc_conn_bundle *rxrpc_get_bundle(struct rxrpc_sock *, |
577 | struct rxrpc_transport *, | |
0d12f8a4 | 578 | struct key *, u16, gfp_t); |
c1b1203d | 579 | void rxrpc_put_bundle(struct rxrpc_transport *, struct rxrpc_conn_bundle *); |
19ffa01c DH |
580 | int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_conn_parameters *, |
581 | struct rxrpc_transport *, struct rxrpc_conn_bundle *, | |
582 | struct rxrpc_call *, gfp_t); | |
c1b1203d JP |
583 | void rxrpc_put_connection(struct rxrpc_connection *); |
584 | void __exit rxrpc_destroy_all_connections(void); | |
585 | struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_transport *, | |
42886ffe | 586 | struct sk_buff *); |
17926a79 | 587 | extern struct rxrpc_connection * |
42886ffe | 588 | rxrpc_incoming_connection(struct rxrpc_transport *, struct sk_buff *); |
17926a79 | 589 | |
19ffa01c DH |
590 | static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
591 | { | |
592 | return conn->out_clientflag; | |
593 | } | |
594 | ||
595 | static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) | |
596 | { | |
597 | return conn->proto.in_clientflag; | |
598 | } | |
599 | ||
5627cc8b DH |
600 | static inline void rxrpc_get_connection(struct rxrpc_connection *conn) |
601 | { | |
602 | atomic_inc(&conn->usage); | |
603 | } | |
604 | ||
605 | static inline | |
606 | struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *conn) | |
607 | { | |
608 | return atomic_inc_not_zero(&conn->usage) ? conn : NULL; | |
609 | } | |
610 | ||
17926a79 | 611 | /* |
0d81a51a | 612 | * input.c |
17926a79 | 613 | */ |
0d81a51a DH |
614 | void rxrpc_data_ready(struct sock *); |
615 | int rxrpc_queue_rcv_skb(struct rxrpc_call *, struct sk_buff *, bool, bool); | |
616 | void rxrpc_fast_process_packet(struct rxrpc_call *, struct sk_buff *); | |
17926a79 DH |
617 | |
618 | /* | |
0d81a51a | 619 | * insecure.c |
17926a79 | 620 | */ |
0d81a51a | 621 | extern const struct rxrpc_security rxrpc_no_security; |
17926a79 DH |
622 | |
623 | /* | |
0d81a51a | 624 | * key.c |
17926a79 | 625 | */ |
0d81a51a DH |
626 | extern struct key_type key_type_rxrpc; |
627 | extern struct key_type key_type_rxrpc_s; | |
628 | ||
629 | int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); | |
630 | int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); | |
631 | int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, | |
632 | u32); | |
17926a79 | 633 | |
87563616 DH |
634 | /* |
635 | * local_event.c | |
636 | */ | |
4f95dd78 | 637 | extern void rxrpc_process_local_events(struct rxrpc_local *); |
87563616 | 638 | |
17926a79 | 639 | /* |
0d81a51a | 640 | * local_object.c |
17926a79 | 641 | */ |
4f95dd78 DH |
642 | struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); |
643 | void __rxrpc_put_local(struct rxrpc_local *); | |
c1b1203d | 644 | void __exit rxrpc_destroy_all_locals(void); |
17926a79 | 645 | |
4f95dd78 DH |
646 | static inline void rxrpc_get_local(struct rxrpc_local *local) |
647 | { | |
648 | atomic_inc(&local->usage); | |
649 | } | |
650 | ||
651 | static inline | |
652 | struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) | |
653 | { | |
654 | return atomic_inc_not_zero(&local->usage) ? local : NULL; | |
655 | } | |
656 | ||
657 | static inline void rxrpc_put_local(struct rxrpc_local *local) | |
658 | { | |
5627cc8b | 659 | if (local && atomic_dec_and_test(&local->usage)) |
4f95dd78 DH |
660 | __rxrpc_put_local(local); |
661 | } | |
662 | ||
17926a79 | 663 | /* |
0d81a51a | 664 | * misc.c |
17926a79 | 665 | */ |
0d81a51a DH |
666 | extern unsigned int rxrpc_max_backlog __read_mostly; |
667 | extern unsigned int rxrpc_requested_ack_delay; | |
668 | extern unsigned int rxrpc_soft_ack_delay; | |
669 | extern unsigned int rxrpc_idle_ack_delay; | |
670 | extern unsigned int rxrpc_rx_window_size; | |
671 | extern unsigned int rxrpc_rx_mtu; | |
672 | extern unsigned int rxrpc_rx_jumbo_max; | |
17926a79 | 673 | |
0d81a51a DH |
674 | extern const char *const rxrpc_pkts[]; |
675 | extern const s8 rxrpc_ack_priority[]; | |
676 | ||
677 | extern const char *rxrpc_acks(u8 reason); | |
17926a79 DH |
678 | |
679 | /* | |
0d81a51a | 680 | * output.c |
17926a79 | 681 | */ |
dad8aff7 | 682 | extern unsigned int rxrpc_resend_timeout; |
17926a79 | 683 | |
985a5c82 | 684 | int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *); |
2341e077 | 685 | int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); |
17926a79 DH |
686 | |
687 | /* | |
abe89ef0 | 688 | * peer_event.c |
0d81a51a | 689 | */ |
abe89ef0 | 690 | void rxrpc_error_report(struct sock *); |
f66d7490 | 691 | void rxrpc_peer_error_distributor(struct work_struct *); |
0d81a51a DH |
692 | |
693 | /* | |
694 | * peer_object.c | |
17926a79 | 695 | */ |
be6e6707 DH |
696 | struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
697 | const struct sockaddr_rxrpc *); | |
698 | struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, | |
699 | struct sockaddr_rxrpc *, gfp_t); | |
700 | struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); | |
701 | ||
702 | static inline void rxrpc_get_peer(struct rxrpc_peer *peer) | |
703 | { | |
704 | atomic_inc(&peer->usage); | |
705 | } | |
706 | ||
707 | static inline | |
708 | struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) | |
709 | { | |
710 | return atomic_inc_not_zero(&peer->usage) ? peer : NULL; | |
711 | } | |
712 | ||
713 | extern void __rxrpc_put_peer(struct rxrpc_peer *peer); | |
714 | static inline void rxrpc_put_peer(struct rxrpc_peer *peer) | |
715 | { | |
5627cc8b | 716 | if (peer && atomic_dec_and_test(&peer->usage)) |
be6e6707 DH |
717 | __rxrpc_put_peer(peer); |
718 | } | |
17926a79 DH |
719 | |
720 | /* | |
0d81a51a | 721 | * proc.c |
17926a79 | 722 | */ |
036c2e27 JE |
723 | extern const char *const rxrpc_call_states[]; |
724 | extern const struct file_operations rxrpc_call_seq_fops; | |
725 | extern const struct file_operations rxrpc_connection_seq_fops; | |
17926a79 DH |
726 | |
727 | /* | |
0d81a51a | 728 | * recvmsg.c |
17926a79 | 729 | */ |
c1b1203d | 730 | void rxrpc_remove_user_ID(struct rxrpc_sock *, struct rxrpc_call *); |
1b784140 | 731 | int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
17926a79 DH |
732 | |
733 | /* | |
0d81a51a DH |
734 | * rxkad.c |
735 | */ | |
736 | #ifdef CONFIG_RXKAD | |
737 | extern const struct rxrpc_security rxkad; | |
738 | #endif | |
739 | ||
740 | /* | |
741 | * security.c | |
17926a79 | 742 | */ |
648af7fc DH |
743 | int __init rxrpc_init_security(void); |
744 | void rxrpc_exit_security(void); | |
c1b1203d JP |
745 | int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
746 | int rxrpc_init_server_conn_security(struct rxrpc_connection *); | |
17926a79 DH |
747 | |
748 | /* | |
0d81a51a | 749 | * skbuff.c |
17926a79 | 750 | */ |
c1b1203d | 751 | void rxrpc_packet_destructor(struct sk_buff *); |
17926a79 | 752 | |
5873c083 DH |
753 | /* |
754 | * sysctl.c | |
755 | */ | |
756 | #ifdef CONFIG_SYSCTL | |
757 | extern int __init rxrpc_sysctl_init(void); | |
758 | extern void rxrpc_sysctl_exit(void); | |
759 | #else | |
760 | static inline int __init rxrpc_sysctl_init(void) { return 0; } | |
761 | static inline void rxrpc_sysctl_exit(void) {} | |
762 | #endif | |
763 | ||
0d81a51a DH |
764 | /* |
765 | * transport.c | |
766 | */ | |
767 | extern unsigned int rxrpc_transport_expiry; | |
768 | ||
769 | struct rxrpc_transport *rxrpc_get_transport(struct rxrpc_local *, | |
770 | struct rxrpc_peer *, gfp_t); | |
771 | void rxrpc_put_transport(struct rxrpc_transport *); | |
772 | void __exit rxrpc_destroy_all_transports(void); | |
773 | struct rxrpc_transport *rxrpc_find_transport(struct rxrpc_local *, | |
774 | struct rxrpc_peer *); | |
775 | ||
be6e6707 DH |
776 | /* |
777 | * utils.c | |
778 | */ | |
779 | void rxrpc_get_addr_from_skb(struct rxrpc_local *, const struct sk_buff *, | |
780 | struct sockaddr_rxrpc *); | |
781 | ||
17926a79 DH |
782 | /* |
783 | * debug tracing | |
784 | */ | |
95c96174 | 785 | extern unsigned int rxrpc_debug; |
17926a79 DH |
786 | |
787 | #define dbgprintk(FMT,...) \ | |
9f389f4b | 788 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
17926a79 | 789 | |
0dc47877 HH |
790 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
791 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
17926a79 DH |
792 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
793 | #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) | |
794 | #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) | |
795 | ||
796 | ||
797 | #if defined(__KDEBUG) | |
798 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
799 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
800 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
801 | #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) | |
802 | #define _net(FMT,...) knet(FMT,##__VA_ARGS__) | |
803 | ||
804 | #elif defined(CONFIG_AF_RXRPC_DEBUG) | |
805 | #define RXRPC_DEBUG_KENTER 0x01 | |
806 | #define RXRPC_DEBUG_KLEAVE 0x02 | |
807 | #define RXRPC_DEBUG_KDEBUG 0x04 | |
808 | #define RXRPC_DEBUG_KPROTO 0x08 | |
809 | #define RXRPC_DEBUG_KNET 0x10 | |
810 | ||
811 | #define _enter(FMT,...) \ | |
812 | do { \ | |
813 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ | |
814 | kenter(FMT,##__VA_ARGS__); \ | |
815 | } while (0) | |
816 | ||
817 | #define _leave(FMT,...) \ | |
818 | do { \ | |
819 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ | |
820 | kleave(FMT,##__VA_ARGS__); \ | |
821 | } while (0) | |
822 | ||
823 | #define _debug(FMT,...) \ | |
824 | do { \ | |
825 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ | |
826 | kdebug(FMT,##__VA_ARGS__); \ | |
827 | } while (0) | |
828 | ||
829 | #define _proto(FMT,...) \ | |
830 | do { \ | |
831 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ | |
832 | kproto(FMT,##__VA_ARGS__); \ | |
833 | } while (0) | |
834 | ||
835 | #define _net(FMT,...) \ | |
836 | do { \ | |
837 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ | |
838 | knet(FMT,##__VA_ARGS__); \ | |
839 | } while (0) | |
840 | ||
841 | #else | |
12fdff3f DH |
842 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
843 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
844 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
845 | #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) | |
846 | #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) | |
17926a79 DH |
847 | #endif |
848 | ||
849 | /* | |
850 | * debug assertion checking | |
851 | */ | |
852 | #if 1 // defined(__KDEBUGALL) | |
853 | ||
854 | #define ASSERT(X) \ | |
855 | do { \ | |
856 | if (unlikely(!(X))) { \ | |
9b6d5398 | 857 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
858 | BUG(); \ |
859 | } \ | |
b4f1342f | 860 | } while (0) |
17926a79 DH |
861 | |
862 | #define ASSERTCMP(X, OP, Y) \ | |
863 | do { \ | |
9b6d5398 JP |
864 | unsigned long _x = (unsigned long)(X); \ |
865 | unsigned long _y = (unsigned long)(Y); \ | |
866 | if (unlikely(!(_x OP _y))) { \ | |
867 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
868 | _x, _x, #OP, _y, _y); \ | |
17926a79 DH |
869 | BUG(); \ |
870 | } \ | |
b4f1342f | 871 | } while (0) |
17926a79 DH |
872 | |
873 | #define ASSERTIF(C, X) \ | |
874 | do { \ | |
875 | if (unlikely((C) && !(X))) { \ | |
9b6d5398 | 876 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
877 | BUG(); \ |
878 | } \ | |
b4f1342f | 879 | } while (0) |
17926a79 DH |
880 | |
881 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
882 | do { \ | |
9b6d5398 JP |
883 | unsigned long _x = (unsigned long)(X); \ |
884 | unsigned long _y = (unsigned long)(Y); \ | |
885 | if (unlikely((C) && !(_x OP _y))) { \ | |
886 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
887 | _x, _x, #OP, _y, _y); \ | |
17926a79 DH |
888 | BUG(); \ |
889 | } \ | |
b4f1342f | 890 | } while (0) |
17926a79 DH |
891 | |
892 | #else | |
893 | ||
894 | #define ASSERT(X) \ | |
895 | do { \ | |
b4f1342f | 896 | } while (0) |
17926a79 DH |
897 | |
898 | #define ASSERTCMP(X, OP, Y) \ | |
899 | do { \ | |
b4f1342f | 900 | } while (0) |
17926a79 DH |
901 | |
902 | #define ASSERTIF(C, X) \ | |
903 | do { \ | |
b4f1342f | 904 | } while (0) |
17926a79 DH |
905 | |
906 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
907 | do { \ | |
b4f1342f | 908 | } while (0) |
17926a79 DH |
909 | |
910 | #endif /* __KDEBUGALL */ | |
911 | ||
912 | /* | |
913 | * socket buffer accounting / leak finding | |
914 | */ | |
915 | static inline void __rxrpc_new_skb(struct sk_buff *skb, const char *fn) | |
916 | { | |
917 | //_net("new skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); | |
918 | //atomic_inc(&rxrpc_n_skbs); | |
919 | } | |
920 | ||
921 | #define rxrpc_new_skb(skb) __rxrpc_new_skb((skb), __func__) | |
922 | ||
923 | static inline void __rxrpc_kill_skb(struct sk_buff *skb, const char *fn) | |
924 | { | |
925 | //_net("kill skb %p %s [%d]", skb, fn, atomic_read(&rxrpc_n_skbs)); | |
926 | //atomic_dec(&rxrpc_n_skbs); | |
927 | } | |
928 | ||
929 | #define rxrpc_kill_skb(skb) __rxrpc_kill_skb((skb), __func__) | |
930 | ||
931 | static inline void __rxrpc_free_skb(struct sk_buff *skb, const char *fn) | |
932 | { | |
933 | if (skb) { | |
934 | CHECK_SLAB_OKAY(&skb->users); | |
935 | //_net("free skb %p %s [%d]", | |
936 | // skb, fn, atomic_read(&rxrpc_n_skbs)); | |
937 | //atomic_dec(&rxrpc_n_skbs); | |
938 | kfree_skb(skb); | |
939 | } | |
940 | } | |
941 | ||
942 | #define rxrpc_free_skb(skb) __rxrpc_free_skb((skb), __func__) | |
943 | ||
944 | static inline void rxrpc_purge_queue(struct sk_buff_head *list) | |
945 | { | |
946 | struct sk_buff *skb; | |
947 | while ((skb = skb_dequeue((list))) != NULL) | |
948 | rxrpc_free_skb(skb); | |
949 | } | |
950 | ||
17926a79 DH |
951 | #define rxrpc_get_call(CALL) \ |
952 | do { \ | |
953 | CHECK_SLAB_OKAY(&(CALL)->usage); \ | |
954 | if (atomic_inc_return(&(CALL)->usage) == 1) \ | |
955 | BUG(); \ | |
b4f1342f | 956 | } while (0) |
17926a79 DH |
957 | |
958 | #define rxrpc_put_call(CALL) \ | |
959 | do { \ | |
960 | __rxrpc_put_call(CALL); \ | |
b4f1342f | 961 | } while (0) |