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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> |
2baec2c3 DH |
14 | #include <net/net_namespace.h> |
15 | #include <net/netns/generic.h> | |
e0e4d82f | 16 | #include <net/sock.h> |
be6e6707 | 17 | #include <net/af_rxrpc.h> |
ddc6c70f | 18 | #include "protocol.h" |
17926a79 DH |
19 | |
20 | #if 0 | |
21 | #define CHECK_SLAB_OKAY(X) \ | |
22 | BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ | |
23 | (POISON_FREE << 8 | POISON_FREE)) | |
24 | #else | |
b4f1342f | 25 | #define CHECK_SLAB_OKAY(X) do {} while (0) |
17926a79 DH |
26 | #endif |
27 | ||
17926a79 DH |
28 | #define FCRYPT_BSIZE 8 |
29 | struct rxrpc_crypt { | |
30 | union { | |
31 | u8 x[FCRYPT_BSIZE]; | |
91e916cf | 32 | __be32 n[2]; |
17926a79 DH |
33 | }; |
34 | } __attribute__((aligned(8))); | |
35 | ||
651350d1 DH |
36 | #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) |
37 | #define rxrpc_queue_delayed_work(WS,D) \ | |
38 | queue_delayed_work(rxrpc_workqueue, (WS), (D)) | |
39 | ||
cc8feb8e DH |
40 | struct rxrpc_connection; |
41 | ||
d001648e | 42 | /* |
ece64fec DH |
43 | * Mark applied to socket buffers in skb->mark. skb->priority is used |
44 | * to pass supplementary information. | |
d001648e DH |
45 | */ |
46 | enum rxrpc_skb_mark { | |
ece64fec DH |
47 | RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */ |
48 | RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */ | |
d001648e DH |
49 | }; |
50 | ||
17926a79 DH |
51 | /* |
52 | * sk_state for RxRPC sockets | |
53 | */ | |
54 | enum { | |
2341e077 DH |
55 | RXRPC_UNBOUND = 0, |
56 | RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ | |
17926a79 | 57 | RXRPC_CLIENT_BOUND, /* client local address bound */ |
17926a79 | 58 | RXRPC_SERVER_BOUND, /* server local address bound */ |
28036f44 | 59 | RXRPC_SERVER_BOUND2, /* second server local address bound */ |
17926a79 | 60 | RXRPC_SERVER_LISTENING, /* server listening for connections */ |
210f0353 | 61 | RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ |
17926a79 DH |
62 | RXRPC_CLOSE, /* socket is being closed */ |
63 | }; | |
64 | ||
2baec2c3 DH |
65 | /* |
66 | * Per-network namespace data. | |
67 | */ | |
68 | struct rxrpc_net { | |
69 | struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ | |
70 | u32 epoch; /* Local epoch for detecting local-end reset */ | |
71 | struct list_head calls; /* List of calls active in this namespace */ | |
72 | rwlock_t call_lock; /* Lock for ->calls */ | |
d3be4d24 | 73 | atomic_t nr_calls; /* Count of allocated calls */ |
2baec2c3 | 74 | |
31f5f9a1 | 75 | atomic_t nr_conns; |
2baec2c3 DH |
76 | struct list_head conn_proc_list; /* List of conns in this namespace for proc */ |
77 | struct list_head service_conns; /* Service conns in this namespace */ | |
78 | rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ | |
3d18cbb7 DH |
79 | struct work_struct service_conn_reaper; |
80 | struct timer_list service_conn_reap_timer; | |
2baec2c3 DH |
81 | |
82 | unsigned int nr_client_conns; | |
83 | unsigned int nr_active_client_conns; | |
84 | bool kill_all_client_conns; | |
f859ab61 | 85 | bool live; |
2baec2c3 DH |
86 | spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ |
87 | spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */ | |
88 | struct list_head waiting_client_conns; | |
89 | struct list_head active_client_conns; | |
90 | struct list_head idle_client_conns; | |
3d18cbb7 DH |
91 | struct work_struct client_conn_reaper; |
92 | struct timer_list client_conn_reap_timer; | |
2baec2c3 DH |
93 | |
94 | struct list_head local_endpoints; | |
95 | struct mutex local_mutex; /* Lock for ->local_endpoints */ | |
96 | ||
2baec2c3 | 97 | DECLARE_HASHTABLE (peer_hash, 10); |
ace45bec DH |
98 | spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ |
99 | ||
100 | #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ | |
101 | u8 peer_keepalive_cursor; | |
330bdcfa DH |
102 | time64_t peer_keepalive_base; |
103 | struct list_head peer_keepalive[32]; | |
104 | struct list_head peer_keepalive_new; | |
ace45bec DH |
105 | struct timer_list peer_keepalive_timer; |
106 | struct work_struct peer_keepalive_work; | |
2baec2c3 DH |
107 | }; |
108 | ||
00e90712 DH |
109 | /* |
110 | * Service backlog preallocation. | |
111 | * | |
112 | * This contains circular buffers of preallocated peers, connections and calls | |
113 | * for incoming service calls and their head and tail pointers. This allows | |
114 | * calls to be set up in the data_ready handler, thereby avoiding the need to | |
115 | * shuffle packets around so much. | |
116 | */ | |
117 | struct rxrpc_backlog { | |
118 | unsigned short peer_backlog_head; | |
119 | unsigned short peer_backlog_tail; | |
120 | unsigned short conn_backlog_head; | |
121 | unsigned short conn_backlog_tail; | |
122 | unsigned short call_backlog_head; | |
123 | unsigned short call_backlog_tail; | |
124 | #define RXRPC_BACKLOG_MAX 32 | |
125 | struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; | |
126 | struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; | |
127 | struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; | |
128 | }; | |
129 | ||
17926a79 DH |
130 | /* |
131 | * RxRPC socket definition | |
132 | */ | |
133 | struct rxrpc_sock { | |
134 | /* WARNING: sk has to be the first member */ | |
135 | struct sock sk; | |
d001648e | 136 | rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ |
00e90712 | 137 | rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ |
17926a79 | 138 | struct rxrpc_local *local; /* local endpoint */ |
00e90712 | 139 | struct rxrpc_backlog *backlog; /* Preallocation for services */ |
248f219c DH |
140 | spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ |
141 | struct list_head sock_calls; /* List of calls owned by this socket */ | |
142 | struct list_head to_be_accepted; /* calls awaiting acceptance */ | |
143 | struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ | |
144 | rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ | |
17926a79 DH |
145 | struct key *key; /* security for this socket */ |
146 | struct key *securities; /* list of server security descriptors */ | |
00e90712 | 147 | struct rb_root calls; /* User ID -> call mapping */ |
17926a79 | 148 | unsigned long flags; |
2341e077 | 149 | #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ |
17926a79 DH |
150 | rwlock_t call_lock; /* lock for calls */ |
151 | u32 min_sec_level; /* minimum security level */ | |
152 | #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT | |
cc8feb8e | 153 | bool exclusive; /* Exclusive connection for a client socket */ |
28036f44 | 154 | u16 second_service; /* Additional service bound to the endpoint */ |
4722974d DH |
155 | struct { |
156 | /* Service upgrade information */ | |
157 | u16 from; /* Service ID to upgrade (if not 0) */ | |
158 | u16 to; /* service ID to upgrade to */ | |
159 | } service_upgrade; | |
cc8feb8e | 160 | sa_family_t family; /* Protocol family created with */ |
4722974d | 161 | struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ |
2341e077 | 162 | struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
17926a79 DH |
163 | }; |
164 | ||
165 | #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) | |
166 | ||
0d12f8a4 DH |
167 | /* |
168 | * CPU-byteorder normalised Rx packet header. | |
169 | */ | |
170 | struct rxrpc_host_header { | |
171 | u32 epoch; /* client boot timestamp */ | |
172 | u32 cid; /* connection and channel ID */ | |
173 | u32 callNumber; /* call ID (0 for connection-level packets) */ | |
174 | u32 seq; /* sequence number of pkt in call stream */ | |
175 | u32 serial; /* serial number of pkt sent to network */ | |
176 | u8 type; /* packet type */ | |
177 | u8 flags; /* packet flags */ | |
178 | u8 userStatus; /* app-layer defined status */ | |
179 | u8 securityIndex; /* security protocol ID */ | |
180 | union { | |
181 | u16 _rsvd; /* reserved */ | |
182 | u16 cksum; /* kerberos security checksum */ | |
183 | }; | |
184 | u16 serviceId; /* service ID */ | |
185 | } __packed; | |
186 | ||
17926a79 DH |
187 | /* |
188 | * RxRPC socket buffer private variables | |
189 | * - max 48 bytes (struct sk_buff::cb) | |
190 | */ | |
191 | struct rxrpc_skb_priv { | |
248f219c | 192 | union { |
50235c4b | 193 | u8 nr_jumbo; /* Number of jumbo subpackets */ |
248f219c | 194 | }; |
17926a79 | 195 | union { |
17926a79 | 196 | int remain; /* amount of space remaining for next write */ |
17926a79 DH |
197 | }; |
198 | ||
0d12f8a4 | 199 | struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ |
17926a79 DH |
200 | }; |
201 | ||
202 | #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) | |
203 | ||
17926a79 DH |
204 | /* |
205 | * RxRPC security module interface | |
206 | */ | |
207 | struct rxrpc_security { | |
17926a79 DH |
208 | const char *name; /* name of this service */ |
209 | u8 security_index; /* security type provided */ | |
210 | ||
648af7fc DH |
211 | /* Initialise a security service */ |
212 | int (*init)(void); | |
213 | ||
214 | /* Clean up a security service */ | |
215 | void (*exit)(void); | |
216 | ||
17926a79 DH |
217 | /* initialise a connection's security */ |
218 | int (*init_connection_security)(struct rxrpc_connection *); | |
219 | ||
220 | /* prime a connection's packet security */ | |
a263629d | 221 | int (*prime_packet_security)(struct rxrpc_connection *); |
17926a79 DH |
222 | |
223 | /* impose security on a packet */ | |
a263629d | 224 | int (*secure_packet)(struct rxrpc_call *, |
17926a79 DH |
225 | struct sk_buff *, |
226 | size_t, | |
227 | void *); | |
228 | ||
229 | /* verify the security on a received packet */ | |
5a42976d | 230 | int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, |
248f219c DH |
231 | unsigned int, unsigned int, rxrpc_seq_t, u16); |
232 | ||
233 | /* Locate the data in a received packet that has been verified. */ | |
234 | void (*locate_data)(struct rxrpc_call *, struct sk_buff *, | |
235 | unsigned int *, unsigned int *); | |
17926a79 DH |
236 | |
237 | /* issue a challenge */ | |
238 | int (*issue_challenge)(struct rxrpc_connection *); | |
239 | ||
240 | /* respond to a challenge */ | |
241 | int (*respond_to_challenge)(struct rxrpc_connection *, | |
242 | struct sk_buff *, | |
243 | u32 *); | |
244 | ||
245 | /* verify a response */ | |
246 | int (*verify_response)(struct rxrpc_connection *, | |
247 | struct sk_buff *, | |
248 | u32 *); | |
249 | ||
250 | /* clear connection security */ | |
251 | void (*clear)(struct rxrpc_connection *); | |
252 | }; | |
253 | ||
254 | /* | |
4f95dd78 DH |
255 | * RxRPC local transport endpoint description |
256 | * - owned by a single AF_RXRPC socket | |
257 | * - pointed to by transport socket struct sk_user_data | |
17926a79 DH |
258 | */ |
259 | struct rxrpc_local { | |
4f95dd78 DH |
260 | struct rcu_head rcu; |
261 | atomic_t usage; | |
2baec2c3 | 262 | struct rxrpc_net *rxnet; /* The network ns in which this resides */ |
4f95dd78 | 263 | struct list_head link; |
17926a79 | 264 | struct socket *socket; /* my UDP socket */ |
4f95dd78 | 265 | struct work_struct processor; |
1e9e5c95 | 266 | struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ |
17926a79 | 267 | struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ |
17926a79 | 268 | struct sk_buff_head reject_queue; /* packets awaiting rejection */ |
44ba0698 | 269 | struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ |
999b69f8 DH |
270 | struct rb_root client_conns; /* Client connections by socket params */ |
271 | spinlock_t client_conns_lock; /* Lock for client_conns */ | |
17926a79 DH |
272 | spinlock_t lock; /* access lock */ |
273 | rwlock_t services_lock; /* lock for services list */ | |
17926a79 | 274 | int debug_id; /* debug ID for printks */ |
4f95dd78 | 275 | bool dead; |
f859ab61 | 276 | bool service_closed; /* Service socket closed */ |
17926a79 DH |
277 | struct sockaddr_rxrpc srx; /* local address */ |
278 | }; | |
279 | ||
280 | /* | |
281 | * RxRPC remote transport endpoint definition | |
be6e6707 | 282 | * - matched by local endpoint, remote port, address and protocol type |
17926a79 DH |
283 | */ |
284 | struct rxrpc_peer { | |
be6e6707 DH |
285 | struct rcu_head rcu; /* This must be first */ |
286 | atomic_t usage; | |
287 | unsigned long hash_key; | |
288 | struct hlist_node hash_link; | |
289 | struct rxrpc_local *local; | |
f66d7490 | 290 | struct hlist_head error_targets; /* targets for net error distribution */ |
aa390bbe | 291 | struct rb_root service_conns; /* Service connections */ |
330bdcfa | 292 | struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ |
ace45bec | 293 | time64_t last_tx_at; /* Last time packet sent here */ |
8496af50 | 294 | seqlock_t service_conn_lock; |
17926a79 | 295 | spinlock_t lock; /* access lock */ |
95c96174 ED |
296 | unsigned int if_mtu; /* interface MTU for this peer */ |
297 | unsigned int mtu; /* network MTU for this peer */ | |
298 | unsigned int maxdata; /* data size (MTU - hdrsize) */ | |
17926a79 DH |
299 | unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ |
300 | int debug_id; /* debug ID for printks */ | |
17926a79 DH |
301 | struct sockaddr_rxrpc srx; /* remote address */ |
302 | ||
303 | /* calculated RTT cache */ | |
304 | #define RXRPC_RTT_CACHE_SIZE 32 | |
c1e15b49 | 305 | spinlock_t rtt_input_lock; /* RTT lock for input routine */ |
0d4b103c | 306 | ktime_t rtt_last_req; /* Time of last RTT request */ |
cf1a6474 DH |
307 | u64 rtt; /* Current RTT estimate (in nS) */ |
308 | u64 rtt_sum; /* Sum of cache contents */ | |
309 | u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ | |
310 | u8 rtt_cursor; /* next entry at which to insert */ | |
311 | u8 rtt_usage; /* amount of cache actually used */ | |
f7aec129 DH |
312 | |
313 | u8 cong_cwnd; /* Congestion window size */ | |
17926a79 DH |
314 | }; |
315 | ||
19ffa01c DH |
316 | /* |
317 | * Keys for matching a connection. | |
318 | */ | |
319 | struct rxrpc_conn_proto { | |
e8d70ce1 DH |
320 | union { |
321 | struct { | |
322 | u32 epoch; /* epoch of this connection */ | |
323 | u32 cid; /* connection ID */ | |
324 | }; | |
325 | u64 index_key; | |
19ffa01c DH |
326 | }; |
327 | }; | |
328 | ||
329 | struct rxrpc_conn_parameters { | |
330 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
331 | struct rxrpc_peer *peer; /* Remote endpoint */ | |
332 | struct key *key; /* Security details */ | |
333 | bool exclusive; /* T if conn is exclusive */ | |
4e255721 | 334 | bool upgrade; /* T if service ID can be upgraded */ |
19ffa01c DH |
335 | u16 service_id; /* Service ID for this connection */ |
336 | u32 security_level; /* Security level selected */ | |
337 | }; | |
338 | ||
bba304db DH |
339 | /* |
340 | * Bits in the connection flags. | |
341 | */ | |
342 | enum rxrpc_conn_flag { | |
343 | RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ | |
001c1122 DH |
344 | RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ |
345 | RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ | |
45025bce DH |
346 | RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ |
347 | RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ | |
348 | RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ | |
4e255721 | 349 | RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ |
3136ef49 DH |
350 | RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ |
351 | RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ | |
352 | RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ | |
353 | RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ | |
bba304db DH |
354 | }; |
355 | ||
3136ef49 DH |
356 | #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ |
357 | (1UL << RXRPC_CONN_FINAL_ACK_1) | \ | |
358 | (1UL << RXRPC_CONN_FINAL_ACK_2) | \ | |
359 | (1UL << RXRPC_CONN_FINAL_ACK_3)) | |
360 | ||
bba304db DH |
361 | /* |
362 | * Events that can be raised upon a connection. | |
363 | */ | |
364 | enum rxrpc_conn_event { | |
365 | RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ | |
366 | }; | |
367 | ||
45025bce DH |
368 | /* |
369 | * The connection cache state. | |
370 | */ | |
371 | enum rxrpc_conn_cache_state { | |
372 | RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ | |
373 | RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ | |
374 | RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ | |
4e255721 | 375 | RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */ |
45025bce DH |
376 | RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ |
377 | RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ | |
363deeab | 378 | RXRPC_CONN__NR_CACHE_STATES |
45025bce DH |
379 | }; |
380 | ||
bba304db DH |
381 | /* |
382 | * The connection protocol state. | |
383 | */ | |
384 | enum rxrpc_conn_proto_state { | |
385 | RXRPC_CONN_UNUSED, /* Connection not yet attempted */ | |
386 | RXRPC_CONN_CLIENT, /* Client connection */ | |
00e90712 | 387 | RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ |
bba304db DH |
388 | RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ |
389 | RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ | |
390 | RXRPC_CONN_SERVICE, /* Service secured connection */ | |
391 | RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ | |
392 | RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ | |
bba304db DH |
393 | RXRPC_CONN__NR_STATES |
394 | }; | |
395 | ||
17926a79 DH |
396 | /* |
397 | * RxRPC connection definition | |
aa390bbe | 398 | * - matched by { local, peer, epoch, conn_id, direction } |
17926a79 DH |
399 | * - each connection can only handle four simultaneous calls |
400 | */ | |
401 | struct rxrpc_connection { | |
19ffa01c DH |
402 | struct rxrpc_conn_proto proto; |
403 | struct rxrpc_conn_parameters params; | |
404 | ||
45025bce DH |
405 | atomic_t usage; |
406 | struct rcu_head rcu; | |
407 | struct list_head cache_link; | |
a1399f8b | 408 | |
45025bce DH |
409 | spinlock_t channel_lock; |
410 | unsigned char active_chans; /* Mask of active channels */ | |
411 | #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) | |
412 | struct list_head waiting_calls; /* Calls waiting for channels */ | |
a1399f8b | 413 | struct rxrpc_channel { |
3136ef49 | 414 | unsigned long final_ack_at; /* Time at which to issue final ACK */ |
a1399f8b | 415 | struct rxrpc_call __rcu *call; /* Active call */ |
4764c0da | 416 | unsigned int call_debug_id; /* call->debug_id */ |
a1399f8b DH |
417 | u32 call_id; /* ID of current call */ |
418 | u32 call_counter; /* Call ID counter */ | |
419 | u32 last_call; /* ID of last call */ | |
18bfeba5 | 420 | u8 last_type; /* Type of last packet */ |
18bfeba5 DH |
421 | union { |
422 | u32 last_seq; | |
423 | u32 last_abort; | |
424 | }; | |
a1399f8b | 425 | } channels[RXRPC_MAXCALLS]; |
999b69f8 | 426 | |
3136ef49 | 427 | struct timer_list timer; /* Conn event timer */ |
17926a79 | 428 | struct work_struct processor; /* connection event processor */ |
999b69f8 DH |
429 | union { |
430 | struct rb_node client_node; /* Node in local->client_conns */ | |
aa390bbe | 431 | struct rb_node service_node; /* Node in peer->service_conns */ |
999b69f8 | 432 | }; |
4d028b2c | 433 | struct list_head proc_link; /* link in procfs list */ |
17926a79 | 434 | struct list_head link; /* link in master connection list */ |
17926a79 | 435 | struct sk_buff_head rx_queue; /* received conn-level packets */ |
648af7fc | 436 | const struct rxrpc_security *security; /* applied security module */ |
17926a79 | 437 | struct key *server_key; /* security for this service */ |
69d826fa | 438 | struct crypto_sync_skcipher *cipher; /* encryption handle */ |
17926a79 | 439 | struct rxrpc_crypt csum_iv; /* packet checksum base */ |
4a3388c8 | 440 | unsigned long flags; |
17926a79 | 441 | unsigned long events; |
f51b4480 | 442 | unsigned long idle_timestamp; /* Time at which last became idle */ |
17926a79 | 443 | spinlock_t state_lock; /* state-change lock */ |
cf13258f DH |
444 | enum rxrpc_conn_cache_state cache_state; |
445 | enum rxrpc_conn_proto_state state; /* current state of connection */ | |
64753092 | 446 | u32 abort_code; /* Abort code of connection abort */ |
17926a79 | 447 | int debug_id; /* debug ID for printks */ |
17926a79 | 448 | atomic_t serial; /* packet serial number counter */ |
563ea7d5 | 449 | unsigned int hi_serial; /* highest serial number received */ |
5a924b89 | 450 | u32 security_nonce; /* response re-use preventer */ |
c1e15b49 | 451 | u32 service_id; /* Service ID, possibly upgraded */ |
17926a79 | 452 | u8 size_align; /* data size alignment (for security) */ |
17926a79 | 453 | u8 security_size; /* security header size */ |
17926a79 | 454 | u8 security_ix; /* security type */ |
17926a79 | 455 | u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
64753092 | 456 | short error; /* Local error code */ |
17926a79 DH |
457 | }; |
458 | ||
dc71db34 DH |
459 | static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) |
460 | { | |
461 | return sp->hdr.flags & RXRPC_CLIENT_INITIATED; | |
462 | } | |
463 | ||
464 | static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) | |
465 | { | |
466 | return !rxrpc_to_server(sp); | |
467 | } | |
468 | ||
5b8848d1 DH |
469 | /* |
470 | * Flags in call->flags. | |
471 | */ | |
472 | enum rxrpc_call_flag { | |
473 | RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ | |
5b8848d1 | 474 | RXRPC_CALL_HAS_USERID, /* has a user ID attached */ |
dabe5a79 | 475 | RXRPC_CALL_IS_SERVICE, /* Call is service call */ |
45025bce | 476 | RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ |
248f219c DH |
477 | RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ |
478 | RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ | |
c038a58c | 479 | RXRPC_CALL_TX_LASTQ, /* Last packet has been queued */ |
a5af7e1f | 480 | RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ |
8e83134d | 481 | RXRPC_CALL_PINGING, /* Ping in process */ |
57494343 | 482 | RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ |
c54e43d7 | 483 | RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ |
1a025028 | 484 | RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ |
d0b35a42 | 485 | RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ |
5b8848d1 DH |
486 | }; |
487 | ||
488 | /* | |
489 | * Events that can be raised on a call. | |
490 | */ | |
491 | enum rxrpc_call_event { | |
4c198ad1 | 492 | RXRPC_CALL_EV_ACK, /* need to generate ACK */ |
4c198ad1 | 493 | RXRPC_CALL_EV_ABORT, /* need to generate abort */ |
4c198ad1 | 494 | RXRPC_CALL_EV_RESEND, /* Tx resend required */ |
a5af7e1f | 495 | RXRPC_CALL_EV_PING, /* Ping send required */ |
a158bdd3 | 496 | RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ |
bd1fdf8c | 497 | RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ |
5b8848d1 DH |
498 | }; |
499 | ||
500 | /* | |
501 | * The states that a call can be in. | |
502 | */ | |
503 | enum rxrpc_call_state { | |
999b69f8 DH |
504 | RXRPC_CALL_UNINITIALISED, |
505 | RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ | |
5b8848d1 DH |
506 | RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ |
507 | RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ | |
508 | RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ | |
00e90712 | 509 | RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ |
5b8848d1 DH |
510 | RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ |
511 | RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ | |
512 | RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ | |
513 | RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ | |
514 | RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ | |
515 | RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ | |
f5c17aae | 516 | RXRPC_CALL_COMPLETE, /* - call complete */ |
f5c17aae DH |
517 | NR__RXRPC_CALL_STATES |
518 | }; | |
519 | ||
57494343 DH |
520 | /* |
521 | * Call Tx congestion management modes. | |
522 | */ | |
523 | enum rxrpc_congest_mode { | |
524 | RXRPC_CALL_SLOW_START, | |
525 | RXRPC_CALL_CONGEST_AVOIDANCE, | |
526 | RXRPC_CALL_PACKET_LOSS, | |
527 | RXRPC_CALL_FAST_RETRANSMIT, | |
528 | NR__RXRPC_CONGEST_MODES | |
529 | }; | |
530 | ||
17926a79 DH |
531 | /* |
532 | * RxRPC call definition | |
533 | * - matched by { connection, call_id } | |
534 | */ | |
535 | struct rxrpc_call { | |
dee46364 | 536 | struct rcu_head rcu; |
17926a79 | 537 | struct rxrpc_connection *conn; /* connection carrying call */ |
df5d8bf7 | 538 | struct rxrpc_peer *peer; /* Peer record for remote address */ |
8d94aa38 | 539 | struct rxrpc_sock __rcu *socket; /* socket responsible */ |
d3be4d24 | 540 | struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ |
540b1c48 | 541 | struct mutex user_mutex; /* User access mutex */ |
a158bdd3 | 542 | unsigned long ack_at; /* When deferred ACK needs to happen */ |
bd1fdf8c | 543 | unsigned long ack_lost_at; /* When ACK is figured as lost */ |
a158bdd3 DH |
544 | unsigned long resend_at; /* When next resend needs to happen */ |
545 | unsigned long ping_at; /* When next to send a ping */ | |
415f44e4 | 546 | unsigned long keepalive_at; /* When next to send a keepalive ping */ |
a158bdd3 DH |
547 | unsigned long expect_rx_by; /* When we expect to get a packet by */ |
548 | unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ | |
549 | unsigned long expect_term_by; /* When we expect call termination by */ | |
550 | u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ | |
551 | u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ | |
248f219c DH |
552 | struct timer_list timer; /* Combined event timer */ |
553 | struct work_struct processor; /* Event processor */ | |
d001648e | 554 | rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ |
17926a79 | 555 | struct list_head link; /* link in master call list */ |
45025bce | 556 | struct list_head chan_wait_link; /* Link in conn->waiting_calls */ |
f66d7490 | 557 | struct hlist_node error_link; /* link in error distribution list */ |
248f219c DH |
558 | struct list_head accept_link; /* Link in rx->acceptq */ |
559 | struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ | |
560 | struct list_head sock_link; /* Link in rx->sock_calls */ | |
561 | struct rb_node sock_node; /* Node in rx->calls */ | |
17926a79 | 562 | struct sk_buff *tx_pending; /* Tx socket buffer being filled */ |
45025bce | 563 | wait_queue_head_t waitq; /* Wait queue for channel or Tx */ |
e754eba6 | 564 | s64 tx_total_len; /* Total length left to be transmitted (or -1) */ |
a263629d | 565 | __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ |
17926a79 | 566 | unsigned long user_call_ID; /* user-defined call ID */ |
17926a79 | 567 | unsigned long flags; |
17926a79 | 568 | unsigned long events; |
17926a79 | 569 | spinlock_t lock; |
20acbd9a | 570 | spinlock_t notify_lock; /* Kernel notification lock */ |
17926a79 | 571 | rwlock_t state_lock; /* lock for state transition */ |
f5c17aae DH |
572 | u32 abort_code; /* Local/remote abort code */ |
573 | int error; /* Local error incurred */ | |
cf13258f DH |
574 | enum rxrpc_call_state state; /* current state of call */ |
575 | enum rxrpc_call_completion completion; /* Call completion condition */ | |
17926a79 | 576 | atomic_t usage; |
dabe5a79 | 577 | u16 service_id; /* service ID */ |
278ac0cd | 578 | u8 security_ix; /* Security type */ |
dabe5a79 DH |
579 | u32 call_id; /* call ID on connection */ |
580 | u32 cid; /* connection ID plus channel index */ | |
581 | int debug_id; /* debug ID for printks */ | |
8e83134d DH |
582 | unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ |
583 | unsigned short rx_pkt_len; /* Current recvmsg packet len */ | |
17926a79 | 584 | |
248f219c DH |
585 | /* Rx/Tx circular buffer, depending on phase. |
586 | * | |
587 | * In the Rx phase, packets are annotated with 0 or the number of the | |
588 | * segment of a jumbo packet each buffer refers to. There can be up to | |
589 | * 47 segments in a maximum-size UDP packet. | |
590 | * | |
591 | * In the Tx phase, packets are annotated with which buffers have been | |
592 | * acked. | |
593 | */ | |
594 | #define RXRPC_RXTX_BUFF_SIZE 64 | |
595 | #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) | |
4075295a | 596 | #define RXRPC_INIT_RX_WINDOW_SIZE 63 |
248f219c DH |
597 | struct sk_buff **rxtx_buffer; |
598 | u8 *rxtx_annotations; | |
599 | #define RXRPC_TX_ANNO_ACK 0 | |
600 | #define RXRPC_TX_ANNO_UNACK 1 | |
601 | #define RXRPC_TX_ANNO_NAK 2 | |
602 | #define RXRPC_TX_ANNO_RETRANS 3 | |
f07373ea | 603 | #define RXRPC_TX_ANNO_MASK 0x03 |
70790dbe DH |
604 | #define RXRPC_TX_ANNO_LAST 0x04 |
605 | #define RXRPC_TX_ANNO_RESENT 0x08 | |
606 | ||
248f219c DH |
607 | #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ |
608 | #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ | |
609 | #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ | |
610 | rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but | |
611 | * not hard-ACK'd packet follows this. | |
612 | */ | |
613 | rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ | |
c7e86acf | 614 | u16 tx_backoff; /* Delay to insert due to Tx failure */ |
57494343 DH |
615 | |
616 | /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS | |
617 | * is fixed, we keep these numbers in terms of segments (ie. DATA | |
618 | * packets) rather than bytes. | |
619 | */ | |
620 | #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN | |
621 | u8 cong_cwnd; /* Congestion window size */ | |
622 | u8 cong_extra; /* Extra to send for congestion management */ | |
623 | u8 cong_ssthresh; /* Slow-start threshold */ | |
624 | enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ | |
625 | u8 cong_dup_acks; /* Count of ACKs showing missing packets */ | |
626 | u8 cong_cumul_acks; /* Cumulative ACK count */ | |
627 | ktime_t cong_tstamp; /* Last time cwnd was changed */ | |
628 | ||
248f219c DH |
629 | rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not |
630 | * consumed packet follows this. | |
17926a79 | 631 | */ |
248f219c DH |
632 | rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ |
633 | rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ | |
1a025028 | 634 | rxrpc_serial_t rx_serial; /* Highest serial received for this call */ |
248f219c DH |
635 | u8 rx_winsize; /* Size of Rx window */ |
636 | u8 tx_winsize; /* Maximum size of Tx window */ | |
71f3ca40 | 637 | bool tx_phase; /* T if transmission phase, F if receive phase */ |
75e42126 | 638 | u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ |
17926a79 | 639 | |
c1e15b49 DH |
640 | spinlock_t input_lock; /* Lock for packet input to this call */ |
641 | ||
17926a79 | 642 | /* receive-phase ACK management */ |
4e36a95e | 643 | u8 ackr_reason; /* reason to ACK */ |
563ea7d5 | 644 | u16 ackr_skew; /* skew on packet being ACK'd */ |
0d12f8a4 | 645 | rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
248f219c | 646 | rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
805b21b9 DH |
647 | rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ |
648 | rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ | |
a5af7e1f DH |
649 | |
650 | /* ping management */ | |
651 | rxrpc_serial_t ping_serial; /* Last ping sent */ | |
652 | ktime_t ping_time; /* Time last ping sent */ | |
17926a79 | 653 | |
248f219c | 654 | /* transmission-phase ACK management */ |
57494343 | 655 | ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ |
248f219c | 656 | rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ |
31a1b989 | 657 | rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ |
bd1fdf8c DH |
658 | rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ |
659 | rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ | |
31a1b989 DH |
660 | }; |
661 | ||
662 | /* | |
57494343 | 663 | * Summary of a new ACK and the changes it made to the Tx buffer packet states. |
31a1b989 DH |
664 | */ |
665 | struct rxrpc_ack_summary { | |
666 | u8 ack_reason; | |
667 | u8 nr_acks; /* Number of ACKs in packet */ | |
668 | u8 nr_nacks; /* Number of NACKs in packet */ | |
669 | u8 nr_new_acks; /* Number of new ACKs in packet */ | |
670 | u8 nr_new_nacks; /* Number of new NACKs in packet */ | |
671 | u8 nr_rot_new_acks; /* Number of rotated new ACKs */ | |
672 | bool new_low_nack; /* T if new low NACK found */ | |
57494343 DH |
673 | bool retrans_timeo; /* T if reTx due to timeout happened */ |
674 | u8 flight_size; /* Number of unreceived transmissions */ | |
675 | /* Place to stash values for tracing */ | |
676 | enum rxrpc_congest_mode mode:8; | |
677 | u8 cwnd; | |
678 | u8 ssthresh; | |
679 | u8 dup_acks; | |
680 | u8 cumulative_acks; | |
17926a79 DH |
681 | }; |
682 | ||
48124178 DH |
683 | /* |
684 | * sendmsg() cmsg-specified parameters. | |
685 | */ | |
686 | enum rxrpc_command { | |
687 | RXRPC_CMD_SEND_DATA, /* send data message */ | |
688 | RXRPC_CMD_SEND_ABORT, /* request abort generation */ | |
689 | RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ | |
690 | RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ | |
691 | }; | |
692 | ||
693 | struct rxrpc_call_params { | |
694 | s64 tx_total_len; /* Total Tx data length (if send data) */ | |
695 | unsigned long user_call_ID; /* User's call ID */ | |
696 | struct { | |
697 | u32 hard; /* Maximum lifetime (sec) */ | |
698 | u32 idle; /* Max time since last data packet (msec) */ | |
699 | u32 normal; /* Max time since last call packet (msec) */ | |
700 | } timeouts; | |
701 | u8 nr_timeouts; /* Number of timeouts specified */ | |
702 | }; | |
703 | ||
704 | struct rxrpc_send_params { | |
705 | struct rxrpc_call_params call; | |
706 | u32 abort_code; /* Abort code to Tx (if abort) */ | |
707 | enum rxrpc_command command : 8; /* The command to implement */ | |
708 | bool exclusive; /* Shared or exclusive call */ | |
709 | bool upgrade; /* If the connection is upgradeable */ | |
710 | }; | |
711 | ||
df844fd4 DH |
712 | #include <trace/events/rxrpc.h> |
713 | ||
17926a79 | 714 | /* |
651350d1 | 715 | * af_rxrpc.c |
17926a79 | 716 | */ |
71f3ca40 | 717 | extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; |
651350d1 | 718 | extern struct workqueue_struct *rxrpc_workqueue; |
17926a79 DH |
719 | |
720 | /* | |
0d81a51a | 721 | * call_accept.c |
17926a79 | 722 | */ |
00e90712 DH |
723 | int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); |
724 | void rxrpc_discard_prealloc(struct rxrpc_sock *); | |
248f219c | 725 | struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, |
0099dc58 | 726 | struct rxrpc_sock *, |
248f219c | 727 | struct sk_buff *); |
4f95dd78 | 728 | void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
d001648e DH |
729 | struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, |
730 | rxrpc_notify_rx_t); | |
c1b1203d | 731 | int rxrpc_reject_call(struct rxrpc_sock *); |
17926a79 DH |
732 | |
733 | /* | |
0d81a51a | 734 | * call_event.c |
17926a79 | 735 | */ |
9c7ad434 DH |
736 | void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, |
737 | enum rxrpc_propose_ack_trace); | |
c1b1203d | 738 | void rxrpc_process_call(struct work_struct *); |
17926a79 | 739 | |
a158bdd3 DH |
740 | static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, |
741 | unsigned long expire_at, | |
742 | unsigned long now, | |
743 | enum rxrpc_timer_trace why) | |
744 | { | |
745 | trace_rxrpc_timer(call, why, now); | |
746 | timer_reduce(&call->timer, expire_at); | |
747 | } | |
748 | ||
17926a79 | 749 | /* |
0d81a51a | 750 | * call_object.c |
17926a79 | 751 | */ |
f5c17aae DH |
752 | extern const char *const rxrpc_call_states[]; |
753 | extern const char *const rxrpc_call_completions[]; | |
dad8aff7 | 754 | extern unsigned int rxrpc_max_call_lifetime; |
17926a79 | 755 | extern struct kmem_cache *rxrpc_call_jar; |
17926a79 | 756 | |
2341e077 | 757 | struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
a25e21f0 | 758 | struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); |
2341e077 | 759 | struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, |
19ffa01c | 760 | struct rxrpc_conn_parameters *, |
999b69f8 | 761 | struct sockaddr_rxrpc *, |
a25e21f0 DH |
762 | struct rxrpc_call_params *, gfp_t, |
763 | unsigned int); | |
c038a58c DH |
764 | int rxrpc_retry_client_call(struct rxrpc_sock *, |
765 | struct rxrpc_call *, | |
766 | struct rxrpc_conn_parameters *, | |
767 | struct sockaddr_rxrpc *, | |
768 | gfp_t); | |
248f219c DH |
769 | void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, |
770 | struct sk_buff *); | |
8d94aa38 | 771 | void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); |
c038a58c | 772 | int rxrpc_prepare_call_for_retry(struct rxrpc_sock *, struct rxrpc_call *); |
c1b1203d | 773 | void rxrpc_release_calls_on_socket(struct rxrpc_sock *); |
8d94aa38 DH |
774 | bool __rxrpc_queue_call(struct rxrpc_call *); |
775 | bool rxrpc_queue_call(struct rxrpc_call *); | |
e34d4234 | 776 | void rxrpc_see_call(struct rxrpc_call *); |
fff72429 DH |
777 | void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); |
778 | void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); | |
00e90712 | 779 | void rxrpc_cleanup_call(struct rxrpc_call *); |
2baec2c3 | 780 | void rxrpc_destroy_all_calls(struct rxrpc_net *); |
17926a79 | 781 | |
dabe5a79 DH |
782 | static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) |
783 | { | |
784 | return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); | |
785 | } | |
786 | ||
787 | static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) | |
788 | { | |
789 | return !rxrpc_is_service_call(call); | |
790 | } | |
791 | ||
f5c17aae DH |
792 | /* |
793 | * Transition a call to the complete state. | |
794 | */ | |
795 | static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, | |
796 | enum rxrpc_call_completion compl, | |
797 | u32 abort_code, | |
798 | int error) | |
799 | { | |
800 | if (call->state < RXRPC_CALL_COMPLETE) { | |
801 | call->abort_code = abort_code; | |
802 | call->error = error; | |
803 | call->completion = compl, | |
804 | call->state = RXRPC_CALL_COMPLETE; | |
1bae5d22 | 805 | trace_rxrpc_call_complete(call); |
c0d058c2 | 806 | wake_up(&call->waitq); |
f5c17aae DH |
807 | return true; |
808 | } | |
809 | return false; | |
810 | } | |
811 | ||
812 | static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, | |
813 | enum rxrpc_call_completion compl, | |
814 | u32 abort_code, | |
815 | int error) | |
816 | { | |
e8d6bbb0 | 817 | bool ret; |
f5c17aae DH |
818 | |
819 | write_lock_bh(&call->state_lock); | |
820 | ret = __rxrpc_set_call_completion(call, compl, abort_code, error); | |
821 | write_unlock_bh(&call->state_lock); | |
822 | return ret; | |
823 | } | |
824 | ||
825 | /* | |
826 | * Record that a call successfully completed. | |
827 | */ | |
e8d6bbb0 | 828 | static inline bool __rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 829 | { |
e8d6bbb0 | 830 | return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); |
f5c17aae DH |
831 | } |
832 | ||
e8d6bbb0 | 833 | static inline bool rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 834 | { |
e8d6bbb0 DH |
835 | bool ret; |
836 | ||
f5c17aae | 837 | write_lock_bh(&call->state_lock); |
e8d6bbb0 | 838 | ret = __rxrpc_call_completed(call); |
f5c17aae | 839 | write_unlock_bh(&call->state_lock); |
e8d6bbb0 | 840 | return ret; |
f5c17aae DH |
841 | } |
842 | ||
843 | /* | |
844 | * Record that a call is locally aborted. | |
845 | */ | |
5a42976d DH |
846 | static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
847 | rxrpc_seq_t seq, | |
f5c17aae DH |
848 | u32 abort_code, int error) |
849 | { | |
a25e21f0 | 850 | trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq, |
5a42976d | 851 | abort_code, error); |
248f219c DH |
852 | return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, |
853 | abort_code, error); | |
f5c17aae DH |
854 | } |
855 | ||
5a42976d DH |
856 | static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
857 | rxrpc_seq_t seq, u32 abort_code, int error) | |
f5c17aae DH |
858 | { |
859 | bool ret; | |
860 | ||
861 | write_lock_bh(&call->state_lock); | |
5a42976d | 862 | ret = __rxrpc_abort_call(why, call, seq, abort_code, error); |
f5c17aae DH |
863 | write_unlock_bh(&call->state_lock); |
864 | return ret; | |
865 | } | |
866 | ||
fb46f6ee DH |
867 | /* |
868 | * Abort a call due to a protocol error. | |
869 | */ | |
870 | static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, | |
871 | struct sk_buff *skb, | |
872 | const char *eproto_why, | |
873 | const char *why, | |
874 | u32 abort_code) | |
875 | { | |
876 | struct rxrpc_skb_priv *sp = rxrpc_skb(skb); | |
877 | ||
878 | trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); | |
879 | return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); | |
880 | } | |
881 | ||
882 | #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ | |
883 | __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ | |
884 | (abort_why), (abort_code)) | |
885 | ||
4a3388c8 DH |
886 | /* |
887 | * conn_client.c | |
888 | */ | |
45025bce DH |
889 | extern unsigned int rxrpc_max_client_connections; |
890 | extern unsigned int rxrpc_reap_client_connections; | |
a158bdd3 DH |
891 | extern unsigned long rxrpc_conn_idle_client_expiry; |
892 | extern unsigned long rxrpc_conn_idle_client_fast_expiry; | |
4a3388c8 DH |
893 | extern struct idr rxrpc_client_conn_ids; |
894 | ||
eb9b9d22 | 895 | void rxrpc_destroy_client_conn_ids(void); |
5e33a23b DH |
896 | int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *, |
897 | struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *, | |
898 | gfp_t); | |
45025bce DH |
899 | void rxrpc_expose_client_call(struct rxrpc_call *); |
900 | void rxrpc_disconnect_client_call(struct rxrpc_call *); | |
901 | void rxrpc_put_client_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
902 | void rxrpc_discard_expired_client_conns(struct work_struct *); |
903 | void rxrpc_destroy_all_client_connections(struct rxrpc_net *); | |
4a3388c8 | 904 | |
17926a79 | 905 | /* |
0d81a51a DH |
906 | * conn_event.c |
907 | */ | |
908 | void rxrpc_process_connection(struct work_struct *); | |
0d81a51a DH |
909 | |
910 | /* | |
911 | * conn_object.c | |
17926a79 | 912 | */ |
dad8aff7 | 913 | extern unsigned int rxrpc_connection_expiry; |
f859ab61 | 914 | extern unsigned int rxrpc_closed_conn_expiry; |
17926a79 | 915 | |
c6d2b8d7 | 916 | struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); |
8496af50 | 917 | struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, |
0099dc58 DH |
918 | struct sk_buff *, |
919 | struct rxrpc_peer **); | |
45025bce | 920 | void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); |
999b69f8 | 921 | void rxrpc_disconnect_call(struct rxrpc_call *); |
45025bce | 922 | void rxrpc_kill_connection(struct rxrpc_connection *); |
363deeab DH |
923 | bool rxrpc_queue_conn(struct rxrpc_connection *); |
924 | void rxrpc_see_connection(struct rxrpc_connection *); | |
925 | void rxrpc_get_connection(struct rxrpc_connection *); | |
926 | struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); | |
927 | void rxrpc_put_service_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
928 | void rxrpc_service_connection_reaper(struct work_struct *); |
929 | void rxrpc_destroy_all_connections(struct rxrpc_net *); | |
17926a79 | 930 | |
19ffa01c DH |
931 | static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
932 | { | |
933 | return conn->out_clientflag; | |
934 | } | |
935 | ||
936 | static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) | |
937 | { | |
e8d70ce1 | 938 | return !rxrpc_conn_is_client(conn); |
19ffa01c DH |
939 | } |
940 | ||
f51b4480 DH |
941 | static inline void rxrpc_put_connection(struct rxrpc_connection *conn) |
942 | { | |
45025bce DH |
943 | if (!conn) |
944 | return; | |
945 | ||
363deeab DH |
946 | if (rxrpc_conn_is_client(conn)) |
947 | rxrpc_put_client_conn(conn); | |
948 | else | |
949 | rxrpc_put_service_conn(conn); | |
5acbee46 DH |
950 | } |
951 | ||
3136ef49 DH |
952 | static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, |
953 | unsigned long expire_at) | |
954 | { | |
955 | timer_reduce(&conn->timer, expire_at); | |
956 | } | |
957 | ||
7877a4a4 DH |
958 | /* |
959 | * conn_service.c | |
960 | */ | |
8496af50 DH |
961 | struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, |
962 | struct sk_buff *); | |
2baec2c3 | 963 | struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); |
4722974d DH |
964 | void rxrpc_new_incoming_connection(struct rxrpc_sock *, |
965 | struct rxrpc_connection *, struct sk_buff *); | |
001c1122 | 966 | void rxrpc_unpublish_service_conn(struct rxrpc_connection *); |
7877a4a4 | 967 | |
17926a79 | 968 | /* |
0d81a51a | 969 | * input.c |
17926a79 | 970 | */ |
5271953c | 971 | int rxrpc_input_packet(struct sock *, struct sk_buff *); |
17926a79 DH |
972 | |
973 | /* | |
0d81a51a | 974 | * insecure.c |
17926a79 | 975 | */ |
0d81a51a | 976 | extern const struct rxrpc_security rxrpc_no_security; |
17926a79 DH |
977 | |
978 | /* | |
0d81a51a | 979 | * key.c |
17926a79 | 980 | */ |
0d81a51a DH |
981 | extern struct key_type key_type_rxrpc; |
982 | extern struct key_type key_type_rxrpc_s; | |
983 | ||
984 | int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); | |
985 | int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); | |
10674a03 | 986 | int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, |
0d81a51a | 987 | u32); |
17926a79 | 988 | |
87563616 DH |
989 | /* |
990 | * local_event.c | |
991 | */ | |
4f95dd78 | 992 | extern void rxrpc_process_local_events(struct rxrpc_local *); |
87563616 | 993 | |
17926a79 | 994 | /* |
0d81a51a | 995 | * local_object.c |
17926a79 | 996 | */ |
2baec2c3 | 997 | struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); |
09d2bf59 DH |
998 | struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); |
999 | struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); | |
1000 | void rxrpc_put_local(struct rxrpc_local *); | |
1001 | void rxrpc_queue_local(struct rxrpc_local *); | |
2baec2c3 | 1002 | void rxrpc_destroy_all_locals(struct rxrpc_net *); |
17926a79 DH |
1003 | |
1004 | /* | |
0d81a51a | 1005 | * misc.c |
17926a79 | 1006 | */ |
0d81a51a | 1007 | extern unsigned int rxrpc_max_backlog __read_mostly; |
a158bdd3 DH |
1008 | extern unsigned long rxrpc_requested_ack_delay; |
1009 | extern unsigned long rxrpc_soft_ack_delay; | |
1010 | extern unsigned long rxrpc_idle_ack_delay; | |
0d81a51a DH |
1011 | extern unsigned int rxrpc_rx_window_size; |
1012 | extern unsigned int rxrpc_rx_mtu; | |
1013 | extern unsigned int rxrpc_rx_jumbo_max; | |
a158bdd3 | 1014 | extern unsigned long rxrpc_resend_timeout; |
17926a79 | 1015 | |
0d81a51a DH |
1016 | extern const s8 rxrpc_ack_priority[]; |
1017 | ||
2baec2c3 DH |
1018 | /* |
1019 | * net_ns.c | |
1020 | */ | |
1021 | extern unsigned int rxrpc_net_id; | |
1022 | extern struct pernet_operations rxrpc_net_ops; | |
1023 | ||
1024 | static inline struct rxrpc_net *rxrpc_net(struct net *net) | |
1025 | { | |
1026 | return net_generic(net, rxrpc_net_id); | |
1027 | } | |
1028 | ||
17926a79 | 1029 | /* |
0d81a51a | 1030 | * output.c |
17926a79 | 1031 | */ |
bd1fdf8c | 1032 | int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); |
26cb02aa | 1033 | int rxrpc_send_abort_packet(struct rxrpc_call *); |
a1767077 | 1034 | int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); |
248f219c | 1035 | void rxrpc_reject_packets(struct rxrpc_local *); |
ace45bec | 1036 | void rxrpc_send_keepalive(struct rxrpc_peer *); |
17926a79 DH |
1037 | |
1038 | /* | |
abe89ef0 | 1039 | * peer_event.c |
0d81a51a | 1040 | */ |
abe89ef0 | 1041 | void rxrpc_error_report(struct sock *); |
cf1a6474 DH |
1042 | void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, |
1043 | rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); | |
ace45bec | 1044 | void rxrpc_peer_keepalive_worker(struct work_struct *); |
0d81a51a DH |
1045 | |
1046 | /* | |
1047 | * peer_object.c | |
17926a79 | 1048 | */ |
be6e6707 DH |
1049 | struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
1050 | const struct sockaddr_rxrpc *); | |
5e33a23b | 1051 | struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *, |
be6e6707 DH |
1052 | struct sockaddr_rxrpc *, gfp_t); |
1053 | struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); | |
5e33a23b DH |
1054 | void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *, |
1055 | struct rxrpc_peer *); | |
17226f12 | 1056 | void rxrpc_destroy_all_peers(struct rxrpc_net *); |
1159d4b4 DH |
1057 | struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); |
1058 | struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); | |
1059 | void rxrpc_put_peer(struct rxrpc_peer *); | |
17926a79 DH |
1060 | |
1061 | /* | |
0d81a51a | 1062 | * proc.c |
17926a79 | 1063 | */ |
c3506372 CH |
1064 | extern const struct seq_operations rxrpc_call_seq_ops; |
1065 | extern const struct seq_operations rxrpc_connection_seq_ops; | |
bc0e7cf4 | 1066 | extern const struct seq_operations rxrpc_peer_seq_ops; |
17926a79 DH |
1067 | |
1068 | /* | |
0d81a51a | 1069 | * recvmsg.c |
17926a79 | 1070 | */ |
248f219c | 1071 | void rxrpc_notify_socket(struct rxrpc_call *); |
1b784140 | 1072 | int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
17926a79 DH |
1073 | |
1074 | /* | |
0d81a51a DH |
1075 | * rxkad.c |
1076 | */ | |
1077 | #ifdef CONFIG_RXKAD | |
1078 | extern const struct rxrpc_security rxkad; | |
1079 | #endif | |
1080 | ||
1081 | /* | |
1082 | * security.c | |
17926a79 | 1083 | */ |
648af7fc DH |
1084 | int __init rxrpc_init_security(void); |
1085 | void rxrpc_exit_security(void); | |
c1b1203d JP |
1086 | int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
1087 | int rxrpc_init_server_conn_security(struct rxrpc_connection *); | |
71a17de3 | 1088 | |
0b58b8a1 DH |
1089 | /* |
1090 | * sendmsg.c | |
1091 | */ | |
1092 | int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); | |
17926a79 DH |
1093 | |
1094 | /* | |
0d81a51a | 1095 | * skbuff.c |
17926a79 | 1096 | */ |
d001648e | 1097 | void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); |
c1b1203d | 1098 | void rxrpc_packet_destructor(struct sk_buff *); |
71f3ca40 DH |
1099 | void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); |
1100 | void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1101 | void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1102 | void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
df844fd4 | 1103 | void rxrpc_purge_queue(struct sk_buff_head *); |
17926a79 | 1104 | |
5873c083 DH |
1105 | /* |
1106 | * sysctl.c | |
1107 | */ | |
1108 | #ifdef CONFIG_SYSCTL | |
1109 | extern int __init rxrpc_sysctl_init(void); | |
1110 | extern void rxrpc_sysctl_exit(void); | |
1111 | #else | |
1112 | static inline int __init rxrpc_sysctl_init(void) { return 0; } | |
1113 | static inline void rxrpc_sysctl_exit(void) {} | |
1114 | #endif | |
1115 | ||
be6e6707 DH |
1116 | /* |
1117 | * utils.c | |
1118 | */ | |
5a790b73 | 1119 | int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); |
be6e6707 | 1120 | |
248f219c DH |
1121 | static inline bool before(u32 seq1, u32 seq2) |
1122 | { | |
1123 | return (s32)(seq1 - seq2) < 0; | |
1124 | } | |
1125 | static inline bool before_eq(u32 seq1, u32 seq2) | |
1126 | { | |
1127 | return (s32)(seq1 - seq2) <= 0; | |
1128 | } | |
1129 | static inline bool after(u32 seq1, u32 seq2) | |
1130 | { | |
1131 | return (s32)(seq1 - seq2) > 0; | |
1132 | } | |
1133 | static inline bool after_eq(u32 seq1, u32 seq2) | |
1134 | { | |
1135 | return (s32)(seq1 - seq2) >= 0; | |
1136 | } | |
1137 | ||
17926a79 DH |
1138 | /* |
1139 | * debug tracing | |
1140 | */ | |
95c96174 | 1141 | extern unsigned int rxrpc_debug; |
17926a79 DH |
1142 | |
1143 | #define dbgprintk(FMT,...) \ | |
9f389f4b | 1144 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
17926a79 | 1145 | |
0dc47877 HH |
1146 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1147 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
17926a79 DH |
1148 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1149 | #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) | |
1150 | #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) | |
1151 | ||
1152 | ||
1153 | #if defined(__KDEBUG) | |
1154 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1155 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1156 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1157 | #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) | |
1158 | #define _net(FMT,...) knet(FMT,##__VA_ARGS__) | |
1159 | ||
1160 | #elif defined(CONFIG_AF_RXRPC_DEBUG) | |
1161 | #define RXRPC_DEBUG_KENTER 0x01 | |
1162 | #define RXRPC_DEBUG_KLEAVE 0x02 | |
1163 | #define RXRPC_DEBUG_KDEBUG 0x04 | |
1164 | #define RXRPC_DEBUG_KPROTO 0x08 | |
1165 | #define RXRPC_DEBUG_KNET 0x10 | |
1166 | ||
1167 | #define _enter(FMT,...) \ | |
1168 | do { \ | |
1169 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ | |
1170 | kenter(FMT,##__VA_ARGS__); \ | |
1171 | } while (0) | |
1172 | ||
1173 | #define _leave(FMT,...) \ | |
1174 | do { \ | |
1175 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ | |
1176 | kleave(FMT,##__VA_ARGS__); \ | |
1177 | } while (0) | |
1178 | ||
1179 | #define _debug(FMT,...) \ | |
1180 | do { \ | |
1181 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ | |
1182 | kdebug(FMT,##__VA_ARGS__); \ | |
1183 | } while (0) | |
1184 | ||
1185 | #define _proto(FMT,...) \ | |
1186 | do { \ | |
1187 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ | |
1188 | kproto(FMT,##__VA_ARGS__); \ | |
1189 | } while (0) | |
1190 | ||
1191 | #define _net(FMT,...) \ | |
1192 | do { \ | |
1193 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ | |
1194 | knet(FMT,##__VA_ARGS__); \ | |
1195 | } while (0) | |
1196 | ||
1197 | #else | |
12fdff3f DH |
1198 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1199 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1200 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
1201 | #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) | |
1202 | #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) | |
17926a79 DH |
1203 | #endif |
1204 | ||
1205 | /* | |
1206 | * debug assertion checking | |
1207 | */ | |
1208 | #if 1 // defined(__KDEBUGALL) | |
1209 | ||
1210 | #define ASSERT(X) \ | |
1211 | do { \ | |
1212 | if (unlikely(!(X))) { \ | |
9b6d5398 | 1213 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1214 | BUG(); \ |
1215 | } \ | |
b4f1342f | 1216 | } while (0) |
17926a79 DH |
1217 | |
1218 | #define ASSERTCMP(X, OP, Y) \ | |
1219 | do { \ | |
cf13258f DH |
1220 | __typeof__(X) _x = (X); \ |
1221 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 | 1222 | if (unlikely(!(_x OP _y))) { \ |
cf13258f DH |
1223 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
1224 | (unsigned long)_x, (unsigned long)_x, #OP, \ | |
1225 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1226 | BUG(); \ |
1227 | } \ | |
b4f1342f | 1228 | } while (0) |
17926a79 DH |
1229 | |
1230 | #define ASSERTIF(C, X) \ | |
1231 | do { \ | |
1232 | if (unlikely((C) && !(X))) { \ | |
9b6d5398 | 1233 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1234 | BUG(); \ |
1235 | } \ | |
b4f1342f | 1236 | } while (0) |
17926a79 DH |
1237 | |
1238 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1239 | do { \ | |
cf13258f DH |
1240 | __typeof__(X) _x = (X); \ |
1241 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 JP |
1242 | if (unlikely((C) && !(_x OP _y))) { \ |
1243 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
cf13258f DH |
1244 | (unsigned long)_x, (unsigned long)_x, #OP, \ |
1245 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1246 | BUG(); \ |
1247 | } \ | |
b4f1342f | 1248 | } while (0) |
17926a79 DH |
1249 | |
1250 | #else | |
1251 | ||
1252 | #define ASSERT(X) \ | |
1253 | do { \ | |
b4f1342f | 1254 | } while (0) |
17926a79 DH |
1255 | |
1256 | #define ASSERTCMP(X, OP, Y) \ | |
1257 | do { \ | |
b4f1342f | 1258 | } while (0) |
17926a79 DH |
1259 | |
1260 | #define ASSERTIF(C, X) \ | |
1261 | do { \ | |
b4f1342f | 1262 | } while (0) |
17926a79 DH |
1263 | |
1264 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1265 | do { \ | |
b4f1342f | 1266 | } while (0) |
17926a79 DH |
1267 | |
1268 | #endif /* __KDEBUGALL */ |