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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> |
8496af50 | 13 | #include <linux/seqlock.h> |
e0e4d82f | 14 | #include <net/sock.h> |
be6e6707 | 15 | #include <net/af_rxrpc.h> |
17926a79 DH |
16 | #include <rxrpc/packet.h> |
17 | ||
18 | #if 0 | |
19 | #define CHECK_SLAB_OKAY(X) \ | |
20 | BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ | |
21 | (POISON_FREE << 8 | POISON_FREE)) | |
22 | #else | |
b4f1342f | 23 | #define CHECK_SLAB_OKAY(X) do {} while (0) |
17926a79 DH |
24 | #endif |
25 | ||
17926a79 DH |
26 | #define FCRYPT_BSIZE 8 |
27 | struct rxrpc_crypt { | |
28 | union { | |
29 | u8 x[FCRYPT_BSIZE]; | |
91e916cf | 30 | __be32 n[2]; |
17926a79 DH |
31 | }; |
32 | } __attribute__((aligned(8))); | |
33 | ||
651350d1 DH |
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)) | |
37 | ||
cc8feb8e DH |
38 | struct rxrpc_connection; |
39 | ||
d001648e DH |
40 | /* |
41 | * Mark applied to socket buffers. | |
42 | */ | |
43 | enum rxrpc_skb_mark { | |
44 | RXRPC_SKB_MARK_DATA, /* data message */ | |
45 | RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ | |
46 | RXRPC_SKB_MARK_BUSY, /* server busy message */ | |
47 | RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ | |
48 | RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */ | |
49 | RXRPC_SKB_MARK_NET_ERROR, /* network error message */ | |
50 | RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ | |
51 | RXRPC_SKB_MARK_NEW_CALL, /* local error message */ | |
52 | }; | |
53 | ||
17926a79 DH |
54 | /* |
55 | * sk_state for RxRPC sockets | |
56 | */ | |
57 | enum { | |
2341e077 DH |
58 | RXRPC_UNBOUND = 0, |
59 | RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ | |
17926a79 | 60 | RXRPC_CLIENT_BOUND, /* client local address bound */ |
17926a79 DH |
61 | RXRPC_SERVER_BOUND, /* server local address bound */ |
62 | RXRPC_SERVER_LISTENING, /* server listening for connections */ | |
63 | RXRPC_CLOSE, /* socket is being closed */ | |
64 | }; | |
65 | ||
00e90712 DH |
66 | /* |
67 | * Service backlog preallocation. | |
68 | * | |
69 | * This contains circular buffers of preallocated peers, connections and calls | |
70 | * for incoming service calls and their head and tail pointers. This allows | |
71 | * calls to be set up in the data_ready handler, thereby avoiding the need to | |
72 | * shuffle packets around so much. | |
73 | */ | |
74 | struct rxrpc_backlog { | |
75 | unsigned short peer_backlog_head; | |
76 | unsigned short peer_backlog_tail; | |
77 | unsigned short conn_backlog_head; | |
78 | unsigned short conn_backlog_tail; | |
79 | unsigned short call_backlog_head; | |
80 | unsigned short call_backlog_tail; | |
81 | #define RXRPC_BACKLOG_MAX 32 | |
82 | struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; | |
83 | struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; | |
84 | struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; | |
85 | }; | |
86 | ||
17926a79 DH |
87 | /* |
88 | * RxRPC socket definition | |
89 | */ | |
90 | struct rxrpc_sock { | |
91 | /* WARNING: sk has to be the first member */ | |
92 | struct sock sk; | |
d001648e | 93 | rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ |
00e90712 | 94 | rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ |
17926a79 | 95 | struct rxrpc_local *local; /* local endpoint */ |
00e90712 | 96 | struct rxrpc_backlog *backlog; /* Preallocation for services */ |
248f219c DH |
97 | spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ |
98 | struct list_head sock_calls; /* List of calls owned by this socket */ | |
99 | struct list_head to_be_accepted; /* calls awaiting acceptance */ | |
100 | struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ | |
101 | rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ | |
17926a79 DH |
102 | struct key *key; /* security for this socket */ |
103 | struct key *securities; /* list of server security descriptors */ | |
00e90712 | 104 | struct rb_root calls; /* User ID -> call mapping */ |
17926a79 | 105 | unsigned long flags; |
2341e077 | 106 | #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ |
17926a79 DH |
107 | rwlock_t call_lock; /* lock for calls */ |
108 | u32 min_sec_level; /* minimum security level */ | |
109 | #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT | |
cc8feb8e DH |
110 | bool exclusive; /* Exclusive connection for a client socket */ |
111 | sa_family_t family; /* Protocol family created with */ | |
17926a79 | 112 | struct sockaddr_rxrpc srx; /* local address */ |
2341e077 | 113 | struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
17926a79 DH |
114 | }; |
115 | ||
116 | #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) | |
117 | ||
0d12f8a4 DH |
118 | /* |
119 | * CPU-byteorder normalised Rx packet header. | |
120 | */ | |
121 | struct rxrpc_host_header { | |
122 | u32 epoch; /* client boot timestamp */ | |
123 | u32 cid; /* connection and channel ID */ | |
124 | u32 callNumber; /* call ID (0 for connection-level packets) */ | |
125 | u32 seq; /* sequence number of pkt in call stream */ | |
126 | u32 serial; /* serial number of pkt sent to network */ | |
127 | u8 type; /* packet type */ | |
128 | u8 flags; /* packet flags */ | |
129 | u8 userStatus; /* app-layer defined status */ | |
130 | u8 securityIndex; /* security protocol ID */ | |
131 | union { | |
132 | u16 _rsvd; /* reserved */ | |
133 | u16 cksum; /* kerberos security checksum */ | |
134 | }; | |
135 | u16 serviceId; /* service ID */ | |
136 | } __packed; | |
137 | ||
17926a79 DH |
138 | /* |
139 | * RxRPC socket buffer private variables | |
140 | * - max 48 bytes (struct sk_buff::cb) | |
141 | */ | |
142 | struct rxrpc_skb_priv { | |
248f219c | 143 | union { |
50235c4b | 144 | u8 nr_jumbo; /* Number of jumbo subpackets */ |
248f219c | 145 | }; |
17926a79 | 146 | union { |
17926a79 | 147 | int remain; /* amount of space remaining for next write */ |
17926a79 DH |
148 | }; |
149 | ||
0d12f8a4 | 150 | struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ |
17926a79 DH |
151 | }; |
152 | ||
153 | #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) | |
154 | ||
17926a79 DH |
155 | /* |
156 | * RxRPC security module interface | |
157 | */ | |
158 | struct rxrpc_security { | |
17926a79 DH |
159 | const char *name; /* name of this service */ |
160 | u8 security_index; /* security type provided */ | |
161 | ||
648af7fc DH |
162 | /* Initialise a security service */ |
163 | int (*init)(void); | |
164 | ||
165 | /* Clean up a security service */ | |
166 | void (*exit)(void); | |
167 | ||
17926a79 DH |
168 | /* initialise a connection's security */ |
169 | int (*init_connection_security)(struct rxrpc_connection *); | |
170 | ||
171 | /* prime a connection's packet security */ | |
a263629d | 172 | int (*prime_packet_security)(struct rxrpc_connection *); |
17926a79 DH |
173 | |
174 | /* impose security on a packet */ | |
a263629d | 175 | int (*secure_packet)(struct rxrpc_call *, |
17926a79 DH |
176 | struct sk_buff *, |
177 | size_t, | |
178 | void *); | |
179 | ||
180 | /* verify the security on a received packet */ | |
5a42976d | 181 | int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, |
248f219c DH |
182 | unsigned int, unsigned int, rxrpc_seq_t, u16); |
183 | ||
184 | /* Locate the data in a received packet that has been verified. */ | |
185 | void (*locate_data)(struct rxrpc_call *, struct sk_buff *, | |
186 | unsigned int *, unsigned int *); | |
17926a79 DH |
187 | |
188 | /* issue a challenge */ | |
189 | int (*issue_challenge)(struct rxrpc_connection *); | |
190 | ||
191 | /* respond to a challenge */ | |
192 | int (*respond_to_challenge)(struct rxrpc_connection *, | |
193 | struct sk_buff *, | |
194 | u32 *); | |
195 | ||
196 | /* verify a response */ | |
197 | int (*verify_response)(struct rxrpc_connection *, | |
198 | struct sk_buff *, | |
199 | u32 *); | |
200 | ||
201 | /* clear connection security */ | |
202 | void (*clear)(struct rxrpc_connection *); | |
203 | }; | |
204 | ||
205 | /* | |
4f95dd78 DH |
206 | * RxRPC local transport endpoint description |
207 | * - owned by a single AF_RXRPC socket | |
208 | * - pointed to by transport socket struct sk_user_data | |
17926a79 DH |
209 | */ |
210 | struct rxrpc_local { | |
4f95dd78 DH |
211 | struct rcu_head rcu; |
212 | atomic_t usage; | |
213 | struct list_head link; | |
17926a79 | 214 | struct socket *socket; /* my UDP socket */ |
4f95dd78 | 215 | struct work_struct processor; |
1e9e5c95 | 216 | struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ |
17926a79 | 217 | struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ |
17926a79 | 218 | struct sk_buff_head reject_queue; /* packets awaiting rejection */ |
44ba0698 | 219 | struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ |
999b69f8 DH |
220 | struct rb_root client_conns; /* Client connections by socket params */ |
221 | spinlock_t client_conns_lock; /* Lock for client_conns */ | |
17926a79 DH |
222 | spinlock_t lock; /* access lock */ |
223 | rwlock_t services_lock; /* lock for services list */ | |
17926a79 | 224 | int debug_id; /* debug ID for printks */ |
4f95dd78 | 225 | bool dead; |
17926a79 DH |
226 | struct sockaddr_rxrpc srx; /* local address */ |
227 | }; | |
228 | ||
229 | /* | |
230 | * RxRPC remote transport endpoint definition | |
be6e6707 | 231 | * - matched by local endpoint, remote port, address and protocol type |
17926a79 DH |
232 | */ |
233 | struct rxrpc_peer { | |
be6e6707 DH |
234 | struct rcu_head rcu; /* This must be first */ |
235 | atomic_t usage; | |
236 | unsigned long hash_key; | |
237 | struct hlist_node hash_link; | |
238 | struct rxrpc_local *local; | |
f66d7490 DH |
239 | struct hlist_head error_targets; /* targets for net error distribution */ |
240 | struct work_struct error_distributor; | |
aa390bbe | 241 | struct rb_root service_conns; /* Service connections */ |
8496af50 | 242 | seqlock_t service_conn_lock; |
17926a79 | 243 | spinlock_t lock; /* access lock */ |
95c96174 ED |
244 | unsigned int if_mtu; /* interface MTU for this peer */ |
245 | unsigned int mtu; /* network MTU for this peer */ | |
246 | unsigned int maxdata; /* data size (MTU - hdrsize) */ | |
17926a79 DH |
247 | unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ |
248 | int debug_id; /* debug ID for printks */ | |
f66d7490 DH |
249 | int error_report; /* Net (+0) or local (+1000000) to distribute */ |
250 | #define RXRPC_LOCAL_ERROR_OFFSET 1000000 | |
17926a79 DH |
251 | struct sockaddr_rxrpc srx; /* remote address */ |
252 | ||
253 | /* calculated RTT cache */ | |
254 | #define RXRPC_RTT_CACHE_SIZE 32 | |
0d4b103c | 255 | ktime_t rtt_last_req; /* Time of last RTT request */ |
cf1a6474 DH |
256 | u64 rtt; /* Current RTT estimate (in nS) */ |
257 | u64 rtt_sum; /* Sum of cache contents */ | |
258 | u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ | |
259 | u8 rtt_cursor; /* next entry at which to insert */ | |
260 | u8 rtt_usage; /* amount of cache actually used */ | |
17926a79 DH |
261 | }; |
262 | ||
19ffa01c DH |
263 | /* |
264 | * Keys for matching a connection. | |
265 | */ | |
266 | struct rxrpc_conn_proto { | |
e8d70ce1 DH |
267 | union { |
268 | struct { | |
269 | u32 epoch; /* epoch of this connection */ | |
270 | u32 cid; /* connection ID */ | |
271 | }; | |
272 | u64 index_key; | |
19ffa01c DH |
273 | }; |
274 | }; | |
275 | ||
276 | struct rxrpc_conn_parameters { | |
277 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
278 | struct rxrpc_peer *peer; /* Remote endpoint */ | |
279 | struct key *key; /* Security details */ | |
280 | bool exclusive; /* T if conn is exclusive */ | |
281 | u16 service_id; /* Service ID for this connection */ | |
282 | u32 security_level; /* Security level selected */ | |
283 | }; | |
284 | ||
bba304db DH |
285 | /* |
286 | * Bits in the connection flags. | |
287 | */ | |
288 | enum rxrpc_conn_flag { | |
289 | RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ | |
001c1122 DH |
290 | RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ |
291 | RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ | |
45025bce DH |
292 | RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ |
293 | RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ | |
294 | RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ | |
bba304db DH |
295 | }; |
296 | ||
297 | /* | |
298 | * Events that can be raised upon a connection. | |
299 | */ | |
300 | enum rxrpc_conn_event { | |
301 | RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ | |
302 | }; | |
303 | ||
45025bce DH |
304 | /* |
305 | * The connection cache state. | |
306 | */ | |
307 | enum rxrpc_conn_cache_state { | |
308 | RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ | |
309 | RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ | |
310 | RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ | |
311 | RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ | |
312 | RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ | |
363deeab | 313 | RXRPC_CONN__NR_CACHE_STATES |
45025bce DH |
314 | }; |
315 | ||
bba304db DH |
316 | /* |
317 | * The connection protocol state. | |
318 | */ | |
319 | enum rxrpc_conn_proto_state { | |
320 | RXRPC_CONN_UNUSED, /* Connection not yet attempted */ | |
321 | RXRPC_CONN_CLIENT, /* Client connection */ | |
00e90712 | 322 | RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ |
bba304db DH |
323 | RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ |
324 | RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ | |
325 | RXRPC_CONN_SERVICE, /* Service secured connection */ | |
326 | RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ | |
327 | RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ | |
bba304db DH |
328 | RXRPC_CONN__NR_STATES |
329 | }; | |
330 | ||
17926a79 DH |
331 | /* |
332 | * RxRPC connection definition | |
aa390bbe | 333 | * - matched by { local, peer, epoch, conn_id, direction } |
17926a79 DH |
334 | * - each connection can only handle four simultaneous calls |
335 | */ | |
336 | struct rxrpc_connection { | |
19ffa01c DH |
337 | struct rxrpc_conn_proto proto; |
338 | struct rxrpc_conn_parameters params; | |
339 | ||
45025bce DH |
340 | atomic_t usage; |
341 | struct rcu_head rcu; | |
342 | struct list_head cache_link; | |
a1399f8b | 343 | |
45025bce DH |
344 | spinlock_t channel_lock; |
345 | unsigned char active_chans; /* Mask of active channels */ | |
346 | #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) | |
347 | struct list_head waiting_calls; /* Calls waiting for channels */ | |
a1399f8b DH |
348 | struct rxrpc_channel { |
349 | struct rxrpc_call __rcu *call; /* Active call */ | |
350 | u32 call_id; /* ID of current call */ | |
351 | u32 call_counter; /* Call ID counter */ | |
352 | u32 last_call; /* ID of last call */ | |
18bfeba5 DH |
353 | u8 last_type; /* Type of last packet */ |
354 | u16 last_service_id; | |
355 | union { | |
356 | u32 last_seq; | |
357 | u32 last_abort; | |
358 | }; | |
a1399f8b | 359 | } channels[RXRPC_MAXCALLS]; |
999b69f8 | 360 | |
17926a79 | 361 | struct work_struct processor; /* connection event processor */ |
999b69f8 DH |
362 | union { |
363 | struct rb_node client_node; /* Node in local->client_conns */ | |
aa390bbe | 364 | struct rb_node service_node; /* Node in peer->service_conns */ |
999b69f8 | 365 | }; |
4d028b2c | 366 | struct list_head proc_link; /* link in procfs list */ |
17926a79 | 367 | struct list_head link; /* link in master connection list */ |
17926a79 | 368 | struct sk_buff_head rx_queue; /* received conn-level packets */ |
648af7fc | 369 | const struct rxrpc_security *security; /* applied security module */ |
17926a79 | 370 | struct key *server_key; /* security for this service */ |
1afe593b | 371 | struct crypto_skcipher *cipher; /* encryption handle */ |
17926a79 | 372 | struct rxrpc_crypt csum_iv; /* packet checksum base */ |
4a3388c8 | 373 | unsigned long flags; |
17926a79 | 374 | unsigned long events; |
f51b4480 | 375 | unsigned long idle_timestamp; /* Time at which last became idle */ |
17926a79 | 376 | spinlock_t state_lock; /* state-change lock */ |
cf13258f DH |
377 | enum rxrpc_conn_cache_state cache_state; |
378 | enum rxrpc_conn_proto_state state; /* current state of connection */ | |
dc44b3a0 DH |
379 | u32 local_abort; /* local abort code */ |
380 | u32 remote_abort; /* remote abort code */ | |
17926a79 | 381 | int debug_id; /* debug ID for printks */ |
17926a79 | 382 | atomic_t serial; /* packet serial number counter */ |
563ea7d5 | 383 | unsigned int hi_serial; /* highest serial number received */ |
5a924b89 | 384 | u32 security_nonce; /* response re-use preventer */ |
17926a79 | 385 | u8 size_align; /* data size alignment (for security) */ |
17926a79 | 386 | u8 security_size; /* security header size */ |
17926a79 | 387 | u8 security_ix; /* security type */ |
17926a79 DH |
388 | u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
389 | }; | |
390 | ||
5b8848d1 DH |
391 | /* |
392 | * Flags in call->flags. | |
393 | */ | |
394 | enum rxrpc_call_flag { | |
395 | RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ | |
5b8848d1 | 396 | RXRPC_CALL_HAS_USERID, /* has a user ID attached */ |
dabe5a79 | 397 | RXRPC_CALL_IS_SERVICE, /* Call is service call */ |
45025bce | 398 | RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ |
248f219c DH |
399 | RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ |
400 | RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ | |
8e83134d | 401 | RXRPC_CALL_PINGING, /* Ping in process */ |
57494343 | 402 | RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ |
5b8848d1 DH |
403 | }; |
404 | ||
405 | /* | |
406 | * Events that can be raised on a call. | |
407 | */ | |
408 | enum rxrpc_call_event { | |
4c198ad1 | 409 | RXRPC_CALL_EV_ACK, /* need to generate ACK */ |
4c198ad1 | 410 | RXRPC_CALL_EV_ABORT, /* need to generate abort */ |
248f219c | 411 | RXRPC_CALL_EV_TIMER, /* Timer expired */ |
4c198ad1 | 412 | RXRPC_CALL_EV_RESEND, /* Tx resend required */ |
5b8848d1 DH |
413 | }; |
414 | ||
415 | /* | |
416 | * The states that a call can be in. | |
417 | */ | |
418 | enum rxrpc_call_state { | |
999b69f8 DH |
419 | RXRPC_CALL_UNINITIALISED, |
420 | RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ | |
5b8848d1 DH |
421 | RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ |
422 | RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ | |
423 | RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ | |
00e90712 | 424 | RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ |
5b8848d1 DH |
425 | RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ |
426 | RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ | |
427 | RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ | |
428 | RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ | |
429 | RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ | |
430 | RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ | |
f5c17aae | 431 | RXRPC_CALL_COMPLETE, /* - call complete */ |
f5c17aae DH |
432 | NR__RXRPC_CALL_STATES |
433 | }; | |
434 | ||
435 | /* | |
436 | * Call completion condition (state == RXRPC_CALL_COMPLETE). | |
437 | */ | |
438 | enum rxrpc_call_completion { | |
439 | RXRPC_CALL_SUCCEEDED, /* - Normal termination */ | |
5b8848d1 DH |
440 | RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ |
441 | RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ | |
f5c17aae | 442 | RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ |
5b8848d1 | 443 | RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ |
f5c17aae | 444 | NR__RXRPC_CALL_COMPLETIONS |
5b8848d1 DH |
445 | }; |
446 | ||
57494343 DH |
447 | /* |
448 | * Call Tx congestion management modes. | |
449 | */ | |
450 | enum rxrpc_congest_mode { | |
451 | RXRPC_CALL_SLOW_START, | |
452 | RXRPC_CALL_CONGEST_AVOIDANCE, | |
453 | RXRPC_CALL_PACKET_LOSS, | |
454 | RXRPC_CALL_FAST_RETRANSMIT, | |
455 | NR__RXRPC_CONGEST_MODES | |
456 | }; | |
457 | ||
17926a79 DH |
458 | /* |
459 | * RxRPC call definition | |
460 | * - matched by { connection, call_id } | |
461 | */ | |
462 | struct rxrpc_call { | |
dee46364 | 463 | struct rcu_head rcu; |
17926a79 | 464 | struct rxrpc_connection *conn; /* connection carrying call */ |
df5d8bf7 | 465 | struct rxrpc_peer *peer; /* Peer record for remote address */ |
8d94aa38 | 466 | struct rxrpc_sock __rcu *socket; /* socket responsible */ |
df0adc78 DH |
467 | ktime_t ack_at; /* When deferred ACK needs to happen */ |
468 | ktime_t resend_at; /* When next resend needs to happen */ | |
469 | ktime_t expire_at; /* When the call times out */ | |
248f219c DH |
470 | struct timer_list timer; /* Combined event timer */ |
471 | struct work_struct processor; /* Event processor */ | |
d001648e | 472 | rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ |
17926a79 | 473 | struct list_head link; /* link in master call list */ |
45025bce | 474 | struct list_head chan_wait_link; /* Link in conn->waiting_calls */ |
f66d7490 | 475 | struct hlist_node error_link; /* link in error distribution list */ |
248f219c DH |
476 | struct list_head accept_link; /* Link in rx->acceptq */ |
477 | struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ | |
478 | struct list_head sock_link; /* Link in rx->sock_calls */ | |
479 | struct rb_node sock_node; /* Node in rx->calls */ | |
17926a79 | 480 | struct sk_buff *tx_pending; /* Tx socket buffer being filled */ |
45025bce | 481 | wait_queue_head_t waitq; /* Wait queue for channel or Tx */ |
a263629d | 482 | __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ |
17926a79 | 483 | unsigned long user_call_ID; /* user-defined call ID */ |
17926a79 | 484 | unsigned long flags; |
17926a79 | 485 | unsigned long events; |
17926a79 DH |
486 | spinlock_t lock; |
487 | rwlock_t state_lock; /* lock for state transition */ | |
f5c17aae DH |
488 | u32 abort_code; /* Local/remote abort code */ |
489 | int error; /* Local error incurred */ | |
cf13258f DH |
490 | enum rxrpc_call_state state; /* current state of call */ |
491 | enum rxrpc_call_completion completion; /* Call completion condition */ | |
17926a79 | 492 | atomic_t usage; |
dabe5a79 | 493 | u16 service_id; /* service ID */ |
278ac0cd | 494 | u8 security_ix; /* Security type */ |
dabe5a79 DH |
495 | u32 call_id; /* call ID on connection */ |
496 | u32 cid; /* connection ID plus channel index */ | |
497 | int debug_id; /* debug ID for printks */ | |
8e83134d DH |
498 | unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ |
499 | unsigned short rx_pkt_len; /* Current recvmsg packet len */ | |
17926a79 | 500 | |
248f219c DH |
501 | /* Rx/Tx circular buffer, depending on phase. |
502 | * | |
503 | * In the Rx phase, packets are annotated with 0 or the number of the | |
504 | * segment of a jumbo packet each buffer refers to. There can be up to | |
505 | * 47 segments in a maximum-size UDP packet. | |
506 | * | |
507 | * In the Tx phase, packets are annotated with which buffers have been | |
508 | * acked. | |
509 | */ | |
510 | #define RXRPC_RXTX_BUFF_SIZE 64 | |
511 | #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) | |
75e42126 | 512 | #define RXRPC_INIT_RX_WINDOW_SIZE 32 |
248f219c DH |
513 | struct sk_buff **rxtx_buffer; |
514 | u8 *rxtx_annotations; | |
515 | #define RXRPC_TX_ANNO_ACK 0 | |
516 | #define RXRPC_TX_ANNO_UNACK 1 | |
517 | #define RXRPC_TX_ANNO_NAK 2 | |
518 | #define RXRPC_TX_ANNO_RETRANS 3 | |
f07373ea | 519 | #define RXRPC_TX_ANNO_MASK 0x03 |
70790dbe DH |
520 | #define RXRPC_TX_ANNO_LAST 0x04 |
521 | #define RXRPC_TX_ANNO_RESENT 0x08 | |
522 | ||
248f219c DH |
523 | #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ |
524 | #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ | |
525 | #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ | |
526 | rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but | |
527 | * not hard-ACK'd packet follows this. | |
528 | */ | |
529 | rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ | |
57494343 DH |
530 | |
531 | /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS | |
532 | * is fixed, we keep these numbers in terms of segments (ie. DATA | |
533 | * packets) rather than bytes. | |
534 | */ | |
535 | #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN | |
536 | u8 cong_cwnd; /* Congestion window size */ | |
537 | u8 cong_extra; /* Extra to send for congestion management */ | |
538 | u8 cong_ssthresh; /* Slow-start threshold */ | |
539 | enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ | |
540 | u8 cong_dup_acks; /* Count of ACKs showing missing packets */ | |
541 | u8 cong_cumul_acks; /* Cumulative ACK count */ | |
542 | ktime_t cong_tstamp; /* Last time cwnd was changed */ | |
543 | ||
248f219c DH |
544 | rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not |
545 | * consumed packet follows this. | |
17926a79 | 546 | */ |
248f219c DH |
547 | rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ |
548 | rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ | |
549 | u8 rx_winsize; /* Size of Rx window */ | |
550 | u8 tx_winsize; /* Maximum size of Tx window */ | |
71f3ca40 | 551 | bool tx_phase; /* T if transmission phase, F if receive phase */ |
75e42126 | 552 | u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ |
17926a79 DH |
553 | |
554 | /* receive-phase ACK management */ | |
4e36a95e | 555 | u8 ackr_reason; /* reason to ACK */ |
563ea7d5 | 556 | u16 ackr_skew; /* skew on packet being ACK'd */ |
0d12f8a4 | 557 | rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
248f219c | 558 | rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
805b21b9 DH |
559 | rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ |
560 | rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ | |
8e83134d DH |
561 | rxrpc_serial_t ackr_ping; /* Last ping sent */ |
562 | ktime_t ackr_ping_time; /* Time last ping sent */ | |
17926a79 | 563 | |
248f219c | 564 | /* transmission-phase ACK management */ |
57494343 | 565 | ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ |
248f219c | 566 | rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ |
31a1b989 DH |
567 | rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ |
568 | }; | |
569 | ||
570 | /* | |
57494343 | 571 | * Summary of a new ACK and the changes it made to the Tx buffer packet states. |
31a1b989 DH |
572 | */ |
573 | struct rxrpc_ack_summary { | |
574 | u8 ack_reason; | |
575 | u8 nr_acks; /* Number of ACKs in packet */ | |
576 | u8 nr_nacks; /* Number of NACKs in packet */ | |
577 | u8 nr_new_acks; /* Number of new ACKs in packet */ | |
578 | u8 nr_new_nacks; /* Number of new NACKs in packet */ | |
579 | u8 nr_rot_new_acks; /* Number of rotated new ACKs */ | |
580 | bool new_low_nack; /* T if new low NACK found */ | |
57494343 DH |
581 | bool retrans_timeo; /* T if reTx due to timeout happened */ |
582 | u8 flight_size; /* Number of unreceived transmissions */ | |
583 | /* Place to stash values for tracing */ | |
584 | enum rxrpc_congest_mode mode:8; | |
585 | u8 cwnd; | |
586 | u8 ssthresh; | |
587 | u8 dup_acks; | |
588 | u8 cumulative_acks; | |
17926a79 DH |
589 | }; |
590 | ||
71f3ca40 DH |
591 | enum rxrpc_skb_trace { |
592 | rxrpc_skb_rx_cleaned, | |
593 | rxrpc_skb_rx_freed, | |
594 | rxrpc_skb_rx_got, | |
595 | rxrpc_skb_rx_lost, | |
596 | rxrpc_skb_rx_received, | |
597 | rxrpc_skb_rx_rotated, | |
598 | rxrpc_skb_rx_purged, | |
599 | rxrpc_skb_rx_seen, | |
600 | rxrpc_skb_tx_cleaned, | |
601 | rxrpc_skb_tx_freed, | |
602 | rxrpc_skb_tx_got, | |
71f3ca40 DH |
603 | rxrpc_skb_tx_new, |
604 | rxrpc_skb_tx_rotated, | |
605 | rxrpc_skb_tx_seen, | |
606 | rxrpc_skb__nr_trace | |
607 | }; | |
608 | ||
609 | extern const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7]; | |
610 | ||
363deeab DH |
611 | enum rxrpc_conn_trace { |
612 | rxrpc_conn_new_client, | |
613 | rxrpc_conn_new_service, | |
614 | rxrpc_conn_queued, | |
615 | rxrpc_conn_seen, | |
616 | rxrpc_conn_got, | |
617 | rxrpc_conn_put_client, | |
618 | rxrpc_conn_put_service, | |
619 | rxrpc_conn__nr_trace | |
620 | }; | |
621 | ||
622 | extern const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4]; | |
623 | ||
624 | enum rxrpc_client_trace { | |
625 | rxrpc_client_activate_chans, | |
626 | rxrpc_client_alloc, | |
627 | rxrpc_client_chan_activate, | |
628 | rxrpc_client_chan_disconnect, | |
629 | rxrpc_client_chan_pass, | |
630 | rxrpc_client_chan_unstarted, | |
631 | rxrpc_client_cleanup, | |
632 | rxrpc_client_count, | |
633 | rxrpc_client_discard, | |
634 | rxrpc_client_duplicate, | |
635 | rxrpc_client_exposed, | |
636 | rxrpc_client_replace, | |
637 | rxrpc_client_to_active, | |
638 | rxrpc_client_to_culled, | |
639 | rxrpc_client_to_idle, | |
640 | rxrpc_client_to_inactive, | |
641 | rxrpc_client_to_waiting, | |
642 | rxrpc_client_uncount, | |
643 | rxrpc_client__nr_trace | |
644 | }; | |
645 | ||
646 | extern const char rxrpc_client_traces[rxrpc_client__nr_trace][7]; | |
647 | extern const char rxrpc_conn_cache_states[RXRPC_CONN__NR_CACHE_STATES][5]; | |
648 | ||
fff72429 DH |
649 | enum rxrpc_call_trace { |
650 | rxrpc_call_new_client, | |
651 | rxrpc_call_new_service, | |
652 | rxrpc_call_queued, | |
653 | rxrpc_call_queued_ref, | |
654 | rxrpc_call_seen, | |
a84a46d7 DH |
655 | rxrpc_call_connected, |
656 | rxrpc_call_release, | |
fff72429 | 657 | rxrpc_call_got, |
fff72429 | 658 | rxrpc_call_got_userid, |
cbd00891 | 659 | rxrpc_call_got_kernel, |
fff72429 | 660 | rxrpc_call_put, |
fff72429 | 661 | rxrpc_call_put_userid, |
cbd00891 | 662 | rxrpc_call_put_kernel, |
fff72429 | 663 | rxrpc_call_put_noqueue, |
a84a46d7 | 664 | rxrpc_call_error, |
fff72429 DH |
665 | rxrpc_call__nr_trace |
666 | }; | |
667 | ||
668 | extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; | |
669 | ||
a124fe3e DH |
670 | enum rxrpc_transmit_trace { |
671 | rxrpc_transmit_wait, | |
672 | rxrpc_transmit_queue, | |
a124fe3e DH |
673 | rxrpc_transmit_queue_last, |
674 | rxrpc_transmit_rotate, | |
70790dbe DH |
675 | rxrpc_transmit_rotate_last, |
676 | rxrpc_transmit_await_reply, | |
a124fe3e DH |
677 | rxrpc_transmit_end, |
678 | rxrpc_transmit__nr_trace | |
679 | }; | |
680 | ||
681 | extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; | |
682 | ||
58dc63c9 DH |
683 | enum rxrpc_receive_trace { |
684 | rxrpc_receive_incoming, | |
685 | rxrpc_receive_queue, | |
686 | rxrpc_receive_queue_last, | |
687 | rxrpc_receive_front, | |
688 | rxrpc_receive_rotate, | |
689 | rxrpc_receive_end, | |
690 | rxrpc_receive__nr_trace | |
691 | }; | |
692 | ||
693 | extern const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4]; | |
694 | ||
84997905 DH |
695 | enum rxrpc_recvmsg_trace { |
696 | rxrpc_recvmsg_enter, | |
697 | rxrpc_recvmsg_wait, | |
698 | rxrpc_recvmsg_dequeue, | |
699 | rxrpc_recvmsg_hole, | |
700 | rxrpc_recvmsg_next, | |
701 | rxrpc_recvmsg_cont, | |
702 | rxrpc_recvmsg_full, | |
703 | rxrpc_recvmsg_data_return, | |
704 | rxrpc_recvmsg_terminal, | |
705 | rxrpc_recvmsg_to_be_accepted, | |
706 | rxrpc_recvmsg_return, | |
707 | rxrpc_recvmsg__nr_trace | |
708 | }; | |
709 | ||
710 | extern const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5]; | |
711 | ||
cf1a6474 DH |
712 | enum rxrpc_rtt_tx_trace { |
713 | rxrpc_rtt_tx_ping, | |
50235c4b | 714 | rxrpc_rtt_tx_data, |
cf1a6474 DH |
715 | rxrpc_rtt_tx__nr_trace |
716 | }; | |
717 | ||
718 | extern const char rxrpc_rtt_tx_traces[rxrpc_rtt_tx__nr_trace][5]; | |
719 | ||
720 | enum rxrpc_rtt_rx_trace { | |
721 | rxrpc_rtt_rx_ping_response, | |
50235c4b | 722 | rxrpc_rtt_rx_requested_ack, |
cf1a6474 DH |
723 | rxrpc_rtt_rx__nr_trace |
724 | }; | |
725 | ||
726 | extern const char rxrpc_rtt_rx_traces[rxrpc_rtt_rx__nr_trace][5]; | |
727 | ||
fc7ab6d2 DH |
728 | enum rxrpc_timer_trace { |
729 | rxrpc_timer_begin, | |
dd7c1ee5 | 730 | rxrpc_timer_init_for_reply, |
fc7ab6d2 DH |
731 | rxrpc_timer_expired, |
732 | rxrpc_timer_set_for_ack, | |
733 | rxrpc_timer_set_for_resend, | |
734 | rxrpc_timer_set_for_send, | |
735 | rxrpc_timer__nr_trace | |
736 | }; | |
737 | ||
738 | extern const char rxrpc_timer_traces[rxrpc_timer__nr_trace][8]; | |
739 | ||
9c7ad434 | 740 | enum rxrpc_propose_ack_trace { |
0d967960 | 741 | rxrpc_propose_ack_client_tx_end, |
9c7ad434 | 742 | rxrpc_propose_ack_input_data, |
57494343 | 743 | rxrpc_propose_ack_ping_for_lost_ack, |
0d967960 | 744 | rxrpc_propose_ack_ping_for_lost_reply, |
9c7ad434 DH |
745 | rxrpc_propose_ack_ping_for_params, |
746 | rxrpc_propose_ack_respond_to_ack, | |
747 | rxrpc_propose_ack_respond_to_ping, | |
748 | rxrpc_propose_ack_retry_tx, | |
805b21b9 | 749 | rxrpc_propose_ack_rotate_rx, |
9c7ad434 DH |
750 | rxrpc_propose_ack_terminal_ack, |
751 | rxrpc_propose_ack__nr_trace | |
752 | }; | |
753 | ||
754 | enum rxrpc_propose_ack_outcome { | |
755 | rxrpc_propose_ack_use, | |
756 | rxrpc_propose_ack_update, | |
757 | rxrpc_propose_ack_subsume, | |
758 | rxrpc_propose_ack__nr_outcomes | |
759 | }; | |
760 | ||
761 | extern const char rxrpc_propose_ack_traces[rxrpc_propose_ack__nr_trace][8]; | |
762 | extern const char *const rxrpc_propose_ack_outcomes[rxrpc_propose_ack__nr_outcomes]; | |
763 | ||
57494343 DH |
764 | enum rxrpc_congest_change { |
765 | rxrpc_cong_begin_retransmission, | |
766 | rxrpc_cong_cleared_nacks, | |
767 | rxrpc_cong_new_low_nack, | |
768 | rxrpc_cong_no_change, | |
769 | rxrpc_cong_progress, | |
770 | rxrpc_cong_retransmit_again, | |
771 | rxrpc_cong_rtt_window_end, | |
772 | rxrpc_cong_saw_nack, | |
773 | rxrpc_congest__nr_change | |
774 | }; | |
775 | ||
776 | extern const char rxrpc_congest_modes[NR__RXRPC_CONGEST_MODES][10]; | |
777 | extern const char rxrpc_congest_changes[rxrpc_congest__nr_change][9]; | |
778 | ||
a3868bfc | 779 | extern const char *const rxrpc_pkts[]; |
19c0dbd5 | 780 | extern const char rxrpc_ack_names[RXRPC_ACK__INVALID + 1][4]; |
a3868bfc | 781 | |
df844fd4 DH |
782 | #include <trace/events/rxrpc.h> |
783 | ||
17926a79 | 784 | /* |
651350d1 | 785 | * af_rxrpc.c |
17926a79 | 786 | */ |
71f3ca40 | 787 | extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; |
0d12f8a4 | 788 | extern u32 rxrpc_epoch; |
651350d1 DH |
789 | extern atomic_t rxrpc_debug_id; |
790 | extern struct workqueue_struct *rxrpc_workqueue; | |
17926a79 DH |
791 | |
792 | /* | |
0d81a51a | 793 | * call_accept.c |
17926a79 | 794 | */ |
00e90712 DH |
795 | int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); |
796 | void rxrpc_discard_prealloc(struct rxrpc_sock *); | |
248f219c DH |
797 | struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, |
798 | struct rxrpc_connection *, | |
799 | struct sk_buff *); | |
4f95dd78 | 800 | void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
d001648e DH |
801 | struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, |
802 | rxrpc_notify_rx_t); | |
c1b1203d | 803 | int rxrpc_reject_call(struct rxrpc_sock *); |
17926a79 DH |
804 | |
805 | /* | |
0d81a51a | 806 | * call_event.c |
17926a79 | 807 | */ |
df0adc78 | 808 | void rxrpc_set_timer(struct rxrpc_call *, enum rxrpc_timer_trace, ktime_t); |
9c7ad434 DH |
809 | void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, |
810 | enum rxrpc_propose_ack_trace); | |
c1b1203d | 811 | void rxrpc_process_call(struct work_struct *); |
17926a79 DH |
812 | |
813 | /* | |
0d81a51a | 814 | * call_object.c |
17926a79 | 815 | */ |
f5c17aae DH |
816 | extern const char *const rxrpc_call_states[]; |
817 | extern const char *const rxrpc_call_completions[]; | |
dad8aff7 | 818 | extern unsigned int rxrpc_max_call_lifetime; |
17926a79 DH |
819 | extern struct kmem_cache *rxrpc_call_jar; |
820 | extern struct list_head rxrpc_calls; | |
821 | extern rwlock_t rxrpc_call_lock; | |
822 | ||
2341e077 | 823 | struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
00e90712 | 824 | struct rxrpc_call *rxrpc_alloc_call(gfp_t); |
2341e077 | 825 | struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, |
19ffa01c | 826 | struct rxrpc_conn_parameters *, |
999b69f8 | 827 | struct sockaddr_rxrpc *, |
2341e077 | 828 | unsigned long, gfp_t); |
248f219c DH |
829 | void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, |
830 | struct sk_buff *); | |
8d94aa38 | 831 | void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); |
c1b1203d | 832 | void rxrpc_release_calls_on_socket(struct rxrpc_sock *); |
8d94aa38 DH |
833 | bool __rxrpc_queue_call(struct rxrpc_call *); |
834 | bool rxrpc_queue_call(struct rxrpc_call *); | |
e34d4234 | 835 | void rxrpc_see_call(struct rxrpc_call *); |
fff72429 DH |
836 | void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); |
837 | void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); | |
00e90712 | 838 | void rxrpc_cleanup_call(struct rxrpc_call *); |
c1b1203d | 839 | void __exit rxrpc_destroy_all_calls(void); |
17926a79 | 840 | |
dabe5a79 DH |
841 | static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) |
842 | { | |
843 | return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); | |
844 | } | |
845 | ||
846 | static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) | |
847 | { | |
848 | return !rxrpc_is_service_call(call); | |
849 | } | |
850 | ||
f5c17aae DH |
851 | /* |
852 | * Transition a call to the complete state. | |
853 | */ | |
854 | static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, | |
855 | enum rxrpc_call_completion compl, | |
856 | u32 abort_code, | |
857 | int error) | |
858 | { | |
859 | if (call->state < RXRPC_CALL_COMPLETE) { | |
860 | call->abort_code = abort_code; | |
861 | call->error = error; | |
862 | call->completion = compl, | |
863 | call->state = RXRPC_CALL_COMPLETE; | |
c0d058c2 | 864 | wake_up(&call->waitq); |
f5c17aae DH |
865 | return true; |
866 | } | |
867 | return false; | |
868 | } | |
869 | ||
870 | static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, | |
871 | enum rxrpc_call_completion compl, | |
872 | u32 abort_code, | |
873 | int error) | |
874 | { | |
e8d6bbb0 | 875 | bool ret; |
f5c17aae DH |
876 | |
877 | write_lock_bh(&call->state_lock); | |
878 | ret = __rxrpc_set_call_completion(call, compl, abort_code, error); | |
879 | write_unlock_bh(&call->state_lock); | |
880 | return ret; | |
881 | } | |
882 | ||
883 | /* | |
884 | * Record that a call successfully completed. | |
885 | */ | |
e8d6bbb0 | 886 | static inline bool __rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 887 | { |
e8d6bbb0 | 888 | return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); |
f5c17aae DH |
889 | } |
890 | ||
e8d6bbb0 | 891 | static inline bool rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 892 | { |
e8d6bbb0 DH |
893 | bool ret; |
894 | ||
f5c17aae | 895 | write_lock_bh(&call->state_lock); |
e8d6bbb0 | 896 | ret = __rxrpc_call_completed(call); |
f5c17aae | 897 | write_unlock_bh(&call->state_lock); |
e8d6bbb0 | 898 | return ret; |
f5c17aae DH |
899 | } |
900 | ||
901 | /* | |
902 | * Record that a call is locally aborted. | |
903 | */ | |
5a42976d DH |
904 | static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
905 | rxrpc_seq_t seq, | |
f5c17aae DH |
906 | u32 abort_code, int error) |
907 | { | |
5a42976d DH |
908 | trace_rxrpc_abort(why, call->cid, call->call_id, seq, |
909 | abort_code, error); | |
248f219c DH |
910 | return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, |
911 | abort_code, error); | |
f5c17aae DH |
912 | } |
913 | ||
5a42976d DH |
914 | static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
915 | rxrpc_seq_t seq, u32 abort_code, int error) | |
f5c17aae DH |
916 | { |
917 | bool ret; | |
918 | ||
919 | write_lock_bh(&call->state_lock); | |
5a42976d | 920 | ret = __rxrpc_abort_call(why, call, seq, abort_code, error); |
f5c17aae DH |
921 | write_unlock_bh(&call->state_lock); |
922 | return ret; | |
923 | } | |
924 | ||
4a3388c8 DH |
925 | /* |
926 | * conn_client.c | |
927 | */ | |
45025bce DH |
928 | extern unsigned int rxrpc_max_client_connections; |
929 | extern unsigned int rxrpc_reap_client_connections; | |
930 | extern unsigned int rxrpc_conn_idle_client_expiry; | |
931 | extern unsigned int rxrpc_conn_idle_client_fast_expiry; | |
4a3388c8 DH |
932 | extern struct idr rxrpc_client_conn_ids; |
933 | ||
eb9b9d22 | 934 | void rxrpc_destroy_client_conn_ids(void); |
c6d2b8d7 DH |
935 | int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, |
936 | struct sockaddr_rxrpc *, gfp_t); | |
45025bce DH |
937 | void rxrpc_expose_client_call(struct rxrpc_call *); |
938 | void rxrpc_disconnect_client_call(struct rxrpc_call *); | |
939 | void rxrpc_put_client_conn(struct rxrpc_connection *); | |
940 | void __exit rxrpc_destroy_all_client_connections(void); | |
4a3388c8 | 941 | |
17926a79 | 942 | /* |
0d81a51a DH |
943 | * conn_event.c |
944 | */ | |
945 | void rxrpc_process_connection(struct work_struct *); | |
0d81a51a DH |
946 | |
947 | /* | |
948 | * conn_object.c | |
17926a79 | 949 | */ |
dad8aff7 | 950 | extern unsigned int rxrpc_connection_expiry; |
17926a79 | 951 | extern struct list_head rxrpc_connections; |
4d028b2c | 952 | extern struct list_head rxrpc_connection_proc_list; |
17926a79 DH |
953 | extern rwlock_t rxrpc_connection_lock; |
954 | ||
8496af50 | 955 | int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); |
c6d2b8d7 | 956 | struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); |
8496af50 DH |
957 | struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, |
958 | struct sk_buff *); | |
45025bce | 959 | void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); |
999b69f8 | 960 | void rxrpc_disconnect_call(struct rxrpc_call *); |
45025bce | 961 | void rxrpc_kill_connection(struct rxrpc_connection *); |
363deeab DH |
962 | bool rxrpc_queue_conn(struct rxrpc_connection *); |
963 | void rxrpc_see_connection(struct rxrpc_connection *); | |
964 | void rxrpc_get_connection(struct rxrpc_connection *); | |
965 | struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); | |
966 | void rxrpc_put_service_conn(struct rxrpc_connection *); | |
c1b1203d | 967 | void __exit rxrpc_destroy_all_connections(void); |
17926a79 | 968 | |
19ffa01c DH |
969 | static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
970 | { | |
971 | return conn->out_clientflag; | |
972 | } | |
973 | ||
974 | static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) | |
975 | { | |
e8d70ce1 | 976 | return !rxrpc_conn_is_client(conn); |
19ffa01c DH |
977 | } |
978 | ||
f51b4480 DH |
979 | static inline void rxrpc_put_connection(struct rxrpc_connection *conn) |
980 | { | |
45025bce DH |
981 | if (!conn) |
982 | return; | |
983 | ||
363deeab DH |
984 | if (rxrpc_conn_is_client(conn)) |
985 | rxrpc_put_client_conn(conn); | |
986 | else | |
987 | rxrpc_put_service_conn(conn); | |
5acbee46 DH |
988 | } |
989 | ||
7877a4a4 DH |
990 | /* |
991 | * conn_service.c | |
992 | */ | |
8496af50 DH |
993 | struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, |
994 | struct sk_buff *); | |
00e90712 | 995 | struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t); |
248f219c | 996 | void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); |
001c1122 | 997 | void rxrpc_unpublish_service_conn(struct rxrpc_connection *); |
7877a4a4 | 998 | |
17926a79 | 999 | /* |
0d81a51a | 1000 | * input.c |
17926a79 | 1001 | */ |
0d81a51a | 1002 | void rxrpc_data_ready(struct sock *); |
17926a79 DH |
1003 | |
1004 | /* | |
0d81a51a | 1005 | * insecure.c |
17926a79 | 1006 | */ |
0d81a51a | 1007 | extern const struct rxrpc_security rxrpc_no_security; |
17926a79 DH |
1008 | |
1009 | /* | |
0d81a51a | 1010 | * key.c |
17926a79 | 1011 | */ |
0d81a51a DH |
1012 | extern struct key_type key_type_rxrpc; |
1013 | extern struct key_type key_type_rxrpc_s; | |
1014 | ||
1015 | int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); | |
1016 | int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); | |
1017 | int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, | |
1018 | u32); | |
17926a79 | 1019 | |
87563616 DH |
1020 | /* |
1021 | * local_event.c | |
1022 | */ | |
4f95dd78 | 1023 | extern void rxrpc_process_local_events(struct rxrpc_local *); |
87563616 | 1024 | |
17926a79 | 1025 | /* |
0d81a51a | 1026 | * local_object.c |
17926a79 | 1027 | */ |
4f95dd78 DH |
1028 | struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); |
1029 | void __rxrpc_put_local(struct rxrpc_local *); | |
c1b1203d | 1030 | void __exit rxrpc_destroy_all_locals(void); |
17926a79 | 1031 | |
4f95dd78 DH |
1032 | static inline void rxrpc_get_local(struct rxrpc_local *local) |
1033 | { | |
1034 | atomic_inc(&local->usage); | |
1035 | } | |
1036 | ||
1037 | static inline | |
1038 | struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) | |
1039 | { | |
1040 | return atomic_inc_not_zero(&local->usage) ? local : NULL; | |
1041 | } | |
1042 | ||
1043 | static inline void rxrpc_put_local(struct rxrpc_local *local) | |
1044 | { | |
5627cc8b | 1045 | if (local && atomic_dec_and_test(&local->usage)) |
4f95dd78 DH |
1046 | __rxrpc_put_local(local); |
1047 | } | |
1048 | ||
5acbee46 DH |
1049 | static inline void rxrpc_queue_local(struct rxrpc_local *local) |
1050 | { | |
1051 | rxrpc_queue_work(&local->processor); | |
1052 | } | |
1053 | ||
17926a79 | 1054 | /* |
0d81a51a | 1055 | * misc.c |
17926a79 | 1056 | */ |
0d81a51a DH |
1057 | extern unsigned int rxrpc_max_backlog __read_mostly; |
1058 | extern unsigned int rxrpc_requested_ack_delay; | |
1059 | extern unsigned int rxrpc_soft_ack_delay; | |
1060 | extern unsigned int rxrpc_idle_ack_delay; | |
1061 | extern unsigned int rxrpc_rx_window_size; | |
1062 | extern unsigned int rxrpc_rx_mtu; | |
1063 | extern unsigned int rxrpc_rx_jumbo_max; | |
0b58b8a1 | 1064 | extern unsigned int rxrpc_resend_timeout; |
17926a79 | 1065 | |
0d81a51a DH |
1066 | extern const s8 rxrpc_ack_priority[]; |
1067 | ||
17926a79 | 1068 | /* |
0d81a51a | 1069 | * output.c |
17926a79 | 1070 | */ |
8d94aa38 | 1071 | int rxrpc_send_call_packet(struct rxrpc_call *, u8); |
a1767077 | 1072 | int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); |
248f219c | 1073 | void rxrpc_reject_packets(struct rxrpc_local *); |
17926a79 DH |
1074 | |
1075 | /* | |
abe89ef0 | 1076 | * peer_event.c |
0d81a51a | 1077 | */ |
abe89ef0 | 1078 | void rxrpc_error_report(struct sock *); |
f66d7490 | 1079 | void rxrpc_peer_error_distributor(struct work_struct *); |
cf1a6474 DH |
1080 | void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, |
1081 | rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); | |
0d81a51a DH |
1082 | |
1083 | /* | |
1084 | * peer_object.c | |
17926a79 | 1085 | */ |
be6e6707 DH |
1086 | struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
1087 | const struct sockaddr_rxrpc *); | |
1088 | struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, | |
1089 | struct sockaddr_rxrpc *, gfp_t); | |
1090 | struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); | |
248f219c DH |
1091 | struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, |
1092 | struct rxrpc_peer *); | |
be6e6707 | 1093 | |
df5d8bf7 | 1094 | static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) |
be6e6707 DH |
1095 | { |
1096 | atomic_inc(&peer->usage); | |
df5d8bf7 | 1097 | return peer; |
be6e6707 DH |
1098 | } |
1099 | ||
1100 | static inline | |
1101 | struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) | |
1102 | { | |
1103 | return atomic_inc_not_zero(&peer->usage) ? peer : NULL; | |
1104 | } | |
1105 | ||
1106 | extern void __rxrpc_put_peer(struct rxrpc_peer *peer); | |
1107 | static inline void rxrpc_put_peer(struct rxrpc_peer *peer) | |
1108 | { | |
5627cc8b | 1109 | if (peer && atomic_dec_and_test(&peer->usage)) |
be6e6707 DH |
1110 | __rxrpc_put_peer(peer); |
1111 | } | |
17926a79 DH |
1112 | |
1113 | /* | |
0d81a51a | 1114 | * proc.c |
17926a79 | 1115 | */ |
036c2e27 JE |
1116 | extern const struct file_operations rxrpc_call_seq_fops; |
1117 | extern const struct file_operations rxrpc_connection_seq_fops; | |
17926a79 DH |
1118 | |
1119 | /* | |
0d81a51a | 1120 | * recvmsg.c |
17926a79 | 1121 | */ |
248f219c | 1122 | void rxrpc_notify_socket(struct rxrpc_call *); |
1b784140 | 1123 | int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
17926a79 DH |
1124 | |
1125 | /* | |
0d81a51a DH |
1126 | * rxkad.c |
1127 | */ | |
1128 | #ifdef CONFIG_RXKAD | |
1129 | extern const struct rxrpc_security rxkad; | |
1130 | #endif | |
1131 | ||
1132 | /* | |
1133 | * security.c | |
17926a79 | 1134 | */ |
648af7fc DH |
1135 | int __init rxrpc_init_security(void); |
1136 | void rxrpc_exit_security(void); | |
c1b1203d JP |
1137 | int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
1138 | int rxrpc_init_server_conn_security(struct rxrpc_connection *); | |
71a17de3 | 1139 | |
0b58b8a1 DH |
1140 | /* |
1141 | * sendmsg.c | |
1142 | */ | |
1143 | int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); | |
17926a79 DH |
1144 | |
1145 | /* | |
0d81a51a | 1146 | * skbuff.c |
17926a79 | 1147 | */ |
d001648e | 1148 | void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); |
c1b1203d | 1149 | void rxrpc_packet_destructor(struct sk_buff *); |
71f3ca40 DH |
1150 | void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); |
1151 | void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1152 | void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1153 | void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1154 | void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
df844fd4 | 1155 | void rxrpc_purge_queue(struct sk_buff_head *); |
17926a79 | 1156 | |
5873c083 DH |
1157 | /* |
1158 | * sysctl.c | |
1159 | */ | |
1160 | #ifdef CONFIG_SYSCTL | |
1161 | extern int __init rxrpc_sysctl_init(void); | |
1162 | extern void rxrpc_sysctl_exit(void); | |
1163 | #else | |
1164 | static inline int __init rxrpc_sysctl_init(void) { return 0; } | |
1165 | static inline void rxrpc_sysctl_exit(void) {} | |
1166 | #endif | |
1167 | ||
be6e6707 DH |
1168 | /* |
1169 | * utils.c | |
1170 | */ | |
d991b4a3 | 1171 | int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); |
be6e6707 | 1172 | |
248f219c DH |
1173 | static inline bool before(u32 seq1, u32 seq2) |
1174 | { | |
1175 | return (s32)(seq1 - seq2) < 0; | |
1176 | } | |
1177 | static inline bool before_eq(u32 seq1, u32 seq2) | |
1178 | { | |
1179 | return (s32)(seq1 - seq2) <= 0; | |
1180 | } | |
1181 | static inline bool after(u32 seq1, u32 seq2) | |
1182 | { | |
1183 | return (s32)(seq1 - seq2) > 0; | |
1184 | } | |
1185 | static inline bool after_eq(u32 seq1, u32 seq2) | |
1186 | { | |
1187 | return (s32)(seq1 - seq2) >= 0; | |
1188 | } | |
1189 | ||
17926a79 DH |
1190 | /* |
1191 | * debug tracing | |
1192 | */ | |
95c96174 | 1193 | extern unsigned int rxrpc_debug; |
17926a79 DH |
1194 | |
1195 | #define dbgprintk(FMT,...) \ | |
9f389f4b | 1196 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
17926a79 | 1197 | |
0dc47877 HH |
1198 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1199 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
17926a79 DH |
1200 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1201 | #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) | |
1202 | #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) | |
1203 | ||
1204 | ||
1205 | #if defined(__KDEBUG) | |
1206 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1207 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1208 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1209 | #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) | |
1210 | #define _net(FMT,...) knet(FMT,##__VA_ARGS__) | |
1211 | ||
1212 | #elif defined(CONFIG_AF_RXRPC_DEBUG) | |
1213 | #define RXRPC_DEBUG_KENTER 0x01 | |
1214 | #define RXRPC_DEBUG_KLEAVE 0x02 | |
1215 | #define RXRPC_DEBUG_KDEBUG 0x04 | |
1216 | #define RXRPC_DEBUG_KPROTO 0x08 | |
1217 | #define RXRPC_DEBUG_KNET 0x10 | |
1218 | ||
1219 | #define _enter(FMT,...) \ | |
1220 | do { \ | |
1221 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ | |
1222 | kenter(FMT,##__VA_ARGS__); \ | |
1223 | } while (0) | |
1224 | ||
1225 | #define _leave(FMT,...) \ | |
1226 | do { \ | |
1227 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ | |
1228 | kleave(FMT,##__VA_ARGS__); \ | |
1229 | } while (0) | |
1230 | ||
1231 | #define _debug(FMT,...) \ | |
1232 | do { \ | |
1233 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ | |
1234 | kdebug(FMT,##__VA_ARGS__); \ | |
1235 | } while (0) | |
1236 | ||
1237 | #define _proto(FMT,...) \ | |
1238 | do { \ | |
1239 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ | |
1240 | kproto(FMT,##__VA_ARGS__); \ | |
1241 | } while (0) | |
1242 | ||
1243 | #define _net(FMT,...) \ | |
1244 | do { \ | |
1245 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ | |
1246 | knet(FMT,##__VA_ARGS__); \ | |
1247 | } while (0) | |
1248 | ||
1249 | #else | |
12fdff3f DH |
1250 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1251 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1252 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
1253 | #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) | |
1254 | #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) | |
17926a79 DH |
1255 | #endif |
1256 | ||
1257 | /* | |
1258 | * debug assertion checking | |
1259 | */ | |
1260 | #if 1 // defined(__KDEBUGALL) | |
1261 | ||
1262 | #define ASSERT(X) \ | |
1263 | do { \ | |
1264 | if (unlikely(!(X))) { \ | |
9b6d5398 | 1265 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1266 | BUG(); \ |
1267 | } \ | |
b4f1342f | 1268 | } while (0) |
17926a79 DH |
1269 | |
1270 | #define ASSERTCMP(X, OP, Y) \ | |
1271 | do { \ | |
cf13258f DH |
1272 | __typeof__(X) _x = (X); \ |
1273 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 | 1274 | if (unlikely(!(_x OP _y))) { \ |
cf13258f DH |
1275 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
1276 | (unsigned long)_x, (unsigned long)_x, #OP, \ | |
1277 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1278 | BUG(); \ |
1279 | } \ | |
b4f1342f | 1280 | } while (0) |
17926a79 DH |
1281 | |
1282 | #define ASSERTIF(C, X) \ | |
1283 | do { \ | |
1284 | if (unlikely((C) && !(X))) { \ | |
9b6d5398 | 1285 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1286 | BUG(); \ |
1287 | } \ | |
b4f1342f | 1288 | } while (0) |
17926a79 DH |
1289 | |
1290 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1291 | do { \ | |
cf13258f DH |
1292 | __typeof__(X) _x = (X); \ |
1293 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 JP |
1294 | if (unlikely((C) && !(_x OP _y))) { \ |
1295 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
cf13258f DH |
1296 | (unsigned long)_x, (unsigned long)_x, #OP, \ |
1297 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1298 | BUG(); \ |
1299 | } \ | |
b4f1342f | 1300 | } while (0) |
17926a79 DH |
1301 | |
1302 | #else | |
1303 | ||
1304 | #define ASSERT(X) \ | |
1305 | do { \ | |
b4f1342f | 1306 | } while (0) |
17926a79 DH |
1307 | |
1308 | #define ASSERTCMP(X, OP, Y) \ | |
1309 | do { \ | |
b4f1342f | 1310 | } while (0) |
17926a79 DH |
1311 | |
1312 | #define ASSERTIF(C, X) \ | |
1313 | do { \ | |
b4f1342f | 1314 | } while (0) |
17926a79 DH |
1315 | |
1316 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1317 | do { \ | |
b4f1342f | 1318 | } while (0) |
17926a79 DH |
1319 | |
1320 | #endif /* __KDEBUGALL */ |