Commit | Line | Data |
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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 | |
0d4b103c | 305 | ktime_t rtt_last_req; /* Time of last RTT request */ |
cf1a6474 DH |
306 | u64 rtt; /* Current RTT estimate (in nS) */ |
307 | u64 rtt_sum; /* Sum of cache contents */ | |
308 | u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ | |
309 | u8 rtt_cursor; /* next entry at which to insert */ | |
310 | u8 rtt_usage; /* amount of cache actually used */ | |
f7aec129 DH |
311 | |
312 | u8 cong_cwnd; /* Congestion window size */ | |
17926a79 DH |
313 | }; |
314 | ||
19ffa01c DH |
315 | /* |
316 | * Keys for matching a connection. | |
317 | */ | |
318 | struct rxrpc_conn_proto { | |
e8d70ce1 DH |
319 | union { |
320 | struct { | |
321 | u32 epoch; /* epoch of this connection */ | |
322 | u32 cid; /* connection ID */ | |
323 | }; | |
324 | u64 index_key; | |
19ffa01c DH |
325 | }; |
326 | }; | |
327 | ||
328 | struct rxrpc_conn_parameters { | |
329 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
330 | struct rxrpc_peer *peer; /* Remote endpoint */ | |
331 | struct key *key; /* Security details */ | |
332 | bool exclusive; /* T if conn is exclusive */ | |
4e255721 | 333 | bool upgrade; /* T if service ID can be upgraded */ |
19ffa01c DH |
334 | u16 service_id; /* Service ID for this connection */ |
335 | u32 security_level; /* Security level selected */ | |
336 | }; | |
337 | ||
bba304db DH |
338 | /* |
339 | * Bits in the connection flags. | |
340 | */ | |
341 | enum rxrpc_conn_flag { | |
342 | RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ | |
001c1122 DH |
343 | RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ |
344 | RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ | |
45025bce DH |
345 | RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ |
346 | RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ | |
347 | RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ | |
4e255721 | 348 | RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ |
3136ef49 DH |
349 | RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ |
350 | RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ | |
351 | RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ | |
352 | RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ | |
bba304db DH |
353 | }; |
354 | ||
3136ef49 DH |
355 | #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ |
356 | (1UL << RXRPC_CONN_FINAL_ACK_1) | \ | |
357 | (1UL << RXRPC_CONN_FINAL_ACK_2) | \ | |
358 | (1UL << RXRPC_CONN_FINAL_ACK_3)) | |
359 | ||
bba304db DH |
360 | /* |
361 | * Events that can be raised upon a connection. | |
362 | */ | |
363 | enum rxrpc_conn_event { | |
364 | RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ | |
365 | }; | |
366 | ||
45025bce DH |
367 | /* |
368 | * The connection cache state. | |
369 | */ | |
370 | enum rxrpc_conn_cache_state { | |
371 | RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ | |
372 | RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ | |
373 | RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ | |
4e255721 | 374 | RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */ |
45025bce DH |
375 | RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ |
376 | RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ | |
363deeab | 377 | RXRPC_CONN__NR_CACHE_STATES |
45025bce DH |
378 | }; |
379 | ||
bba304db DH |
380 | /* |
381 | * The connection protocol state. | |
382 | */ | |
383 | enum rxrpc_conn_proto_state { | |
384 | RXRPC_CONN_UNUSED, /* Connection not yet attempted */ | |
385 | RXRPC_CONN_CLIENT, /* Client connection */ | |
00e90712 | 386 | RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ |
bba304db DH |
387 | RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ |
388 | RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ | |
389 | RXRPC_CONN_SERVICE, /* Service secured connection */ | |
390 | RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ | |
391 | RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ | |
bba304db DH |
392 | RXRPC_CONN__NR_STATES |
393 | }; | |
394 | ||
17926a79 DH |
395 | /* |
396 | * RxRPC connection definition | |
aa390bbe | 397 | * - matched by { local, peer, epoch, conn_id, direction } |
17926a79 DH |
398 | * - each connection can only handle four simultaneous calls |
399 | */ | |
400 | struct rxrpc_connection { | |
19ffa01c DH |
401 | struct rxrpc_conn_proto proto; |
402 | struct rxrpc_conn_parameters params; | |
403 | ||
45025bce DH |
404 | atomic_t usage; |
405 | struct rcu_head rcu; | |
406 | struct list_head cache_link; | |
a1399f8b | 407 | |
45025bce DH |
408 | spinlock_t channel_lock; |
409 | unsigned char active_chans; /* Mask of active channels */ | |
410 | #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) | |
411 | struct list_head waiting_calls; /* Calls waiting for channels */ | |
a1399f8b | 412 | struct rxrpc_channel { |
3136ef49 | 413 | unsigned long final_ack_at; /* Time at which to issue final ACK */ |
a1399f8b | 414 | struct rxrpc_call __rcu *call; /* Active call */ |
4764c0da | 415 | unsigned int call_debug_id; /* call->debug_id */ |
a1399f8b DH |
416 | u32 call_id; /* ID of current call */ |
417 | u32 call_counter; /* Call ID counter */ | |
418 | u32 last_call; /* ID of last call */ | |
18bfeba5 | 419 | u8 last_type; /* Type of last packet */ |
18bfeba5 DH |
420 | union { |
421 | u32 last_seq; | |
422 | u32 last_abort; | |
423 | }; | |
a1399f8b | 424 | } channels[RXRPC_MAXCALLS]; |
999b69f8 | 425 | |
3136ef49 | 426 | struct timer_list timer; /* Conn event timer */ |
17926a79 | 427 | struct work_struct processor; /* connection event processor */ |
999b69f8 DH |
428 | union { |
429 | struct rb_node client_node; /* Node in local->client_conns */ | |
aa390bbe | 430 | struct rb_node service_node; /* Node in peer->service_conns */ |
999b69f8 | 431 | }; |
4d028b2c | 432 | struct list_head proc_link; /* link in procfs list */ |
17926a79 | 433 | struct list_head link; /* link in master connection list */ |
17926a79 | 434 | struct sk_buff_head rx_queue; /* received conn-level packets */ |
648af7fc | 435 | const struct rxrpc_security *security; /* applied security module */ |
17926a79 | 436 | struct key *server_key; /* security for this service */ |
1afe593b | 437 | struct crypto_skcipher *cipher; /* encryption handle */ |
17926a79 | 438 | struct rxrpc_crypt csum_iv; /* packet checksum base */ |
4a3388c8 | 439 | unsigned long flags; |
17926a79 | 440 | unsigned long events; |
f51b4480 | 441 | unsigned long idle_timestamp; /* Time at which last became idle */ |
17926a79 | 442 | spinlock_t state_lock; /* state-change lock */ |
cf13258f DH |
443 | enum rxrpc_conn_cache_state cache_state; |
444 | enum rxrpc_conn_proto_state state; /* current state of connection */ | |
64753092 | 445 | u32 abort_code; /* Abort code of connection abort */ |
17926a79 | 446 | int debug_id; /* debug ID for printks */ |
17926a79 | 447 | atomic_t serial; /* packet serial number counter */ |
563ea7d5 | 448 | unsigned int hi_serial; /* highest serial number received */ |
5a924b89 | 449 | u32 security_nonce; /* response re-use preventer */ |
68d6d1ae | 450 | u16 service_id; /* Service ID, possibly upgraded */ |
17926a79 | 451 | u8 size_align; /* data size alignment (for security) */ |
17926a79 | 452 | u8 security_size; /* security header size */ |
17926a79 | 453 | u8 security_ix; /* security type */ |
17926a79 | 454 | u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
64753092 | 455 | short error; /* Local error code */ |
17926a79 DH |
456 | }; |
457 | ||
dc71db34 DH |
458 | static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) |
459 | { | |
460 | return sp->hdr.flags & RXRPC_CLIENT_INITIATED; | |
461 | } | |
462 | ||
463 | static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) | |
464 | { | |
465 | return !rxrpc_to_server(sp); | |
466 | } | |
467 | ||
5b8848d1 DH |
468 | /* |
469 | * Flags in call->flags. | |
470 | */ | |
471 | enum rxrpc_call_flag { | |
472 | RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ | |
5b8848d1 | 473 | RXRPC_CALL_HAS_USERID, /* has a user ID attached */ |
dabe5a79 | 474 | RXRPC_CALL_IS_SERVICE, /* Call is service call */ |
45025bce | 475 | RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ |
248f219c DH |
476 | RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ |
477 | RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ | |
c038a58c | 478 | RXRPC_CALL_TX_LASTQ, /* Last packet has been queued */ |
a5af7e1f | 479 | RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ |
8e83134d | 480 | RXRPC_CALL_PINGING, /* Ping in process */ |
57494343 | 481 | RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ |
c54e43d7 | 482 | RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ |
1a025028 | 483 | RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ |
d0b35a42 | 484 | RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ |
5b8848d1 DH |
485 | }; |
486 | ||
487 | /* | |
488 | * Events that can be raised on a call. | |
489 | */ | |
490 | enum rxrpc_call_event { | |
4c198ad1 | 491 | RXRPC_CALL_EV_ACK, /* need to generate ACK */ |
4c198ad1 | 492 | RXRPC_CALL_EV_ABORT, /* need to generate abort */ |
4c198ad1 | 493 | RXRPC_CALL_EV_RESEND, /* Tx resend required */ |
a5af7e1f | 494 | RXRPC_CALL_EV_PING, /* Ping send required */ |
a158bdd3 | 495 | RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ |
bd1fdf8c | 496 | RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ |
5b8848d1 DH |
497 | }; |
498 | ||
499 | /* | |
500 | * The states that a call can be in. | |
501 | */ | |
502 | enum rxrpc_call_state { | |
999b69f8 DH |
503 | RXRPC_CALL_UNINITIALISED, |
504 | RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ | |
5b8848d1 DH |
505 | RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ |
506 | RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ | |
507 | RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ | |
00e90712 | 508 | RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ |
5b8848d1 DH |
509 | RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ |
510 | RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ | |
511 | RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ | |
512 | RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ | |
513 | RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ | |
514 | RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ | |
f5c17aae | 515 | RXRPC_CALL_COMPLETE, /* - call complete */ |
f5c17aae DH |
516 | NR__RXRPC_CALL_STATES |
517 | }; | |
518 | ||
57494343 DH |
519 | /* |
520 | * Call Tx congestion management modes. | |
521 | */ | |
522 | enum rxrpc_congest_mode { | |
523 | RXRPC_CALL_SLOW_START, | |
524 | RXRPC_CALL_CONGEST_AVOIDANCE, | |
525 | RXRPC_CALL_PACKET_LOSS, | |
526 | RXRPC_CALL_FAST_RETRANSMIT, | |
527 | NR__RXRPC_CONGEST_MODES | |
528 | }; | |
529 | ||
17926a79 DH |
530 | /* |
531 | * RxRPC call definition | |
532 | * - matched by { connection, call_id } | |
533 | */ | |
534 | struct rxrpc_call { | |
dee46364 | 535 | struct rcu_head rcu; |
17926a79 | 536 | struct rxrpc_connection *conn; /* connection carrying call */ |
df5d8bf7 | 537 | struct rxrpc_peer *peer; /* Peer record for remote address */ |
8d94aa38 | 538 | struct rxrpc_sock __rcu *socket; /* socket responsible */ |
d3be4d24 | 539 | struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ |
540b1c48 | 540 | struct mutex user_mutex; /* User access mutex */ |
a158bdd3 | 541 | unsigned long ack_at; /* When deferred ACK needs to happen */ |
bd1fdf8c | 542 | unsigned long ack_lost_at; /* When ACK is figured as lost */ |
a158bdd3 DH |
543 | unsigned long resend_at; /* When next resend needs to happen */ |
544 | unsigned long ping_at; /* When next to send a ping */ | |
415f44e4 | 545 | unsigned long keepalive_at; /* When next to send a keepalive ping */ |
a158bdd3 DH |
546 | unsigned long expect_rx_by; /* When we expect to get a packet by */ |
547 | unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ | |
548 | unsigned long expect_term_by; /* When we expect call termination by */ | |
549 | u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ | |
550 | u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ | |
248f219c DH |
551 | struct timer_list timer; /* Combined event timer */ |
552 | struct work_struct processor; /* Event processor */ | |
d001648e | 553 | rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ |
17926a79 | 554 | struct list_head link; /* link in master call list */ |
45025bce | 555 | struct list_head chan_wait_link; /* Link in conn->waiting_calls */ |
f66d7490 | 556 | struct hlist_node error_link; /* link in error distribution list */ |
248f219c DH |
557 | struct list_head accept_link; /* Link in rx->acceptq */ |
558 | struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ | |
559 | struct list_head sock_link; /* Link in rx->sock_calls */ | |
560 | struct rb_node sock_node; /* Node in rx->calls */ | |
17926a79 | 561 | struct sk_buff *tx_pending; /* Tx socket buffer being filled */ |
45025bce | 562 | wait_queue_head_t waitq; /* Wait queue for channel or Tx */ |
e754eba6 | 563 | s64 tx_total_len; /* Total length left to be transmitted (or -1) */ |
a263629d | 564 | __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ |
17926a79 | 565 | unsigned long user_call_ID; /* user-defined call ID */ |
17926a79 | 566 | unsigned long flags; |
17926a79 | 567 | unsigned long events; |
17926a79 | 568 | spinlock_t lock; |
20acbd9a | 569 | spinlock_t notify_lock; /* Kernel notification lock */ |
17926a79 | 570 | rwlock_t state_lock; /* lock for state transition */ |
f5c17aae DH |
571 | u32 abort_code; /* Local/remote abort code */ |
572 | int error; /* Local error incurred */ | |
cf13258f DH |
573 | enum rxrpc_call_state state; /* current state of call */ |
574 | enum rxrpc_call_completion completion; /* Call completion condition */ | |
17926a79 | 575 | atomic_t usage; |
dabe5a79 | 576 | u16 service_id; /* service ID */ |
278ac0cd | 577 | u8 security_ix; /* Security type */ |
dabe5a79 DH |
578 | u32 call_id; /* call ID on connection */ |
579 | u32 cid; /* connection ID plus channel index */ | |
580 | int debug_id; /* debug ID for printks */ | |
8e83134d DH |
581 | unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ |
582 | unsigned short rx_pkt_len; /* Current recvmsg packet len */ | |
17926a79 | 583 | |
248f219c DH |
584 | /* Rx/Tx circular buffer, depending on phase. |
585 | * | |
586 | * In the Rx phase, packets are annotated with 0 or the number of the | |
587 | * segment of a jumbo packet each buffer refers to. There can be up to | |
588 | * 47 segments in a maximum-size UDP packet. | |
589 | * | |
590 | * In the Tx phase, packets are annotated with which buffers have been | |
591 | * acked. | |
592 | */ | |
593 | #define RXRPC_RXTX_BUFF_SIZE 64 | |
594 | #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) | |
4075295a | 595 | #define RXRPC_INIT_RX_WINDOW_SIZE 63 |
248f219c DH |
596 | struct sk_buff **rxtx_buffer; |
597 | u8 *rxtx_annotations; | |
598 | #define RXRPC_TX_ANNO_ACK 0 | |
599 | #define RXRPC_TX_ANNO_UNACK 1 | |
600 | #define RXRPC_TX_ANNO_NAK 2 | |
601 | #define RXRPC_TX_ANNO_RETRANS 3 | |
f07373ea | 602 | #define RXRPC_TX_ANNO_MASK 0x03 |
70790dbe DH |
603 | #define RXRPC_TX_ANNO_LAST 0x04 |
604 | #define RXRPC_TX_ANNO_RESENT 0x08 | |
605 | ||
248f219c DH |
606 | #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ |
607 | #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ | |
608 | #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ | |
609 | rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but | |
610 | * not hard-ACK'd packet follows this. | |
611 | */ | |
612 | rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ | |
57494343 DH |
613 | |
614 | /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS | |
615 | * is fixed, we keep these numbers in terms of segments (ie. DATA | |
616 | * packets) rather than bytes. | |
617 | */ | |
618 | #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN | |
619 | u8 cong_cwnd; /* Congestion window size */ | |
620 | u8 cong_extra; /* Extra to send for congestion management */ | |
621 | u8 cong_ssthresh; /* Slow-start threshold */ | |
622 | enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ | |
623 | u8 cong_dup_acks; /* Count of ACKs showing missing packets */ | |
624 | u8 cong_cumul_acks; /* Cumulative ACK count */ | |
625 | ktime_t cong_tstamp; /* Last time cwnd was changed */ | |
626 | ||
248f219c DH |
627 | rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not |
628 | * consumed packet follows this. | |
17926a79 | 629 | */ |
248f219c DH |
630 | rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ |
631 | rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ | |
1a025028 | 632 | rxrpc_serial_t rx_serial; /* Highest serial received for this call */ |
248f219c DH |
633 | u8 rx_winsize; /* Size of Rx window */ |
634 | u8 tx_winsize; /* Maximum size of Tx window */ | |
71f3ca40 | 635 | bool tx_phase; /* T if transmission phase, F if receive phase */ |
75e42126 | 636 | u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ |
17926a79 DH |
637 | |
638 | /* receive-phase ACK management */ | |
4e36a95e | 639 | u8 ackr_reason; /* reason to ACK */ |
563ea7d5 | 640 | u16 ackr_skew; /* skew on packet being ACK'd */ |
0d12f8a4 | 641 | rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
248f219c | 642 | rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
805b21b9 DH |
643 | rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ |
644 | rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ | |
a5af7e1f DH |
645 | |
646 | /* ping management */ | |
647 | rxrpc_serial_t ping_serial; /* Last ping sent */ | |
648 | ktime_t ping_time; /* Time last ping sent */ | |
17926a79 | 649 | |
248f219c | 650 | /* transmission-phase ACK management */ |
57494343 | 651 | ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ |
248f219c | 652 | rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ |
31a1b989 | 653 | rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ |
bd1fdf8c DH |
654 | rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ |
655 | rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ | |
31a1b989 DH |
656 | }; |
657 | ||
658 | /* | |
57494343 | 659 | * Summary of a new ACK and the changes it made to the Tx buffer packet states. |
31a1b989 DH |
660 | */ |
661 | struct rxrpc_ack_summary { | |
662 | u8 ack_reason; | |
663 | u8 nr_acks; /* Number of ACKs in packet */ | |
664 | u8 nr_nacks; /* Number of NACKs in packet */ | |
665 | u8 nr_new_acks; /* Number of new ACKs in packet */ | |
666 | u8 nr_new_nacks; /* Number of new NACKs in packet */ | |
667 | u8 nr_rot_new_acks; /* Number of rotated new ACKs */ | |
668 | bool new_low_nack; /* T if new low NACK found */ | |
57494343 DH |
669 | bool retrans_timeo; /* T if reTx due to timeout happened */ |
670 | u8 flight_size; /* Number of unreceived transmissions */ | |
671 | /* Place to stash values for tracing */ | |
672 | enum rxrpc_congest_mode mode:8; | |
673 | u8 cwnd; | |
674 | u8 ssthresh; | |
675 | u8 dup_acks; | |
676 | u8 cumulative_acks; | |
17926a79 DH |
677 | }; |
678 | ||
48124178 DH |
679 | /* |
680 | * sendmsg() cmsg-specified parameters. | |
681 | */ | |
682 | enum rxrpc_command { | |
683 | RXRPC_CMD_SEND_DATA, /* send data message */ | |
684 | RXRPC_CMD_SEND_ABORT, /* request abort generation */ | |
685 | RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ | |
686 | RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ | |
687 | }; | |
688 | ||
689 | struct rxrpc_call_params { | |
690 | s64 tx_total_len; /* Total Tx data length (if send data) */ | |
691 | unsigned long user_call_ID; /* User's call ID */ | |
692 | struct { | |
693 | u32 hard; /* Maximum lifetime (sec) */ | |
694 | u32 idle; /* Max time since last data packet (msec) */ | |
695 | u32 normal; /* Max time since last call packet (msec) */ | |
696 | } timeouts; | |
697 | u8 nr_timeouts; /* Number of timeouts specified */ | |
698 | }; | |
699 | ||
700 | struct rxrpc_send_params { | |
701 | struct rxrpc_call_params call; | |
702 | u32 abort_code; /* Abort code to Tx (if abort) */ | |
703 | enum rxrpc_command command : 8; /* The command to implement */ | |
704 | bool exclusive; /* Shared or exclusive call */ | |
705 | bool upgrade; /* If the connection is upgradeable */ | |
706 | }; | |
707 | ||
df844fd4 DH |
708 | #include <trace/events/rxrpc.h> |
709 | ||
17926a79 | 710 | /* |
651350d1 | 711 | * af_rxrpc.c |
17926a79 | 712 | */ |
71f3ca40 | 713 | extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; |
651350d1 | 714 | extern struct workqueue_struct *rxrpc_workqueue; |
17926a79 DH |
715 | |
716 | /* | |
0d81a51a | 717 | * call_accept.c |
17926a79 | 718 | */ |
00e90712 DH |
719 | int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); |
720 | void rxrpc_discard_prealloc(struct rxrpc_sock *); | |
248f219c | 721 | struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, |
0099dc58 DH |
722 | struct rxrpc_sock *, |
723 | struct rxrpc_peer *, | |
248f219c DH |
724 | struct rxrpc_connection *, |
725 | struct sk_buff *); | |
4f95dd78 | 726 | void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
d001648e DH |
727 | struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, |
728 | rxrpc_notify_rx_t); | |
c1b1203d | 729 | int rxrpc_reject_call(struct rxrpc_sock *); |
17926a79 DH |
730 | |
731 | /* | |
0d81a51a | 732 | * call_event.c |
17926a79 | 733 | */ |
9c7ad434 DH |
734 | void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool, |
735 | enum rxrpc_propose_ack_trace); | |
c1b1203d | 736 | void rxrpc_process_call(struct work_struct *); |
17926a79 | 737 | |
a158bdd3 DH |
738 | static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, |
739 | unsigned long expire_at, | |
740 | unsigned long now, | |
741 | enum rxrpc_timer_trace why) | |
742 | { | |
743 | trace_rxrpc_timer(call, why, now); | |
744 | timer_reduce(&call->timer, expire_at); | |
745 | } | |
746 | ||
17926a79 | 747 | /* |
0d81a51a | 748 | * call_object.c |
17926a79 | 749 | */ |
f5c17aae DH |
750 | extern const char *const rxrpc_call_states[]; |
751 | extern const char *const rxrpc_call_completions[]; | |
dad8aff7 | 752 | extern unsigned int rxrpc_max_call_lifetime; |
17926a79 | 753 | extern struct kmem_cache *rxrpc_call_jar; |
17926a79 | 754 | |
2341e077 | 755 | struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
a25e21f0 | 756 | struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); |
2341e077 | 757 | struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, |
19ffa01c | 758 | struct rxrpc_conn_parameters *, |
999b69f8 | 759 | struct sockaddr_rxrpc *, |
a25e21f0 DH |
760 | struct rxrpc_call_params *, gfp_t, |
761 | unsigned int); | |
c038a58c DH |
762 | int rxrpc_retry_client_call(struct rxrpc_sock *, |
763 | struct rxrpc_call *, | |
764 | struct rxrpc_conn_parameters *, | |
765 | struct sockaddr_rxrpc *, | |
766 | gfp_t); | |
248f219c DH |
767 | void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, |
768 | struct sk_buff *); | |
8d94aa38 | 769 | void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); |
c038a58c | 770 | int rxrpc_prepare_call_for_retry(struct rxrpc_sock *, struct rxrpc_call *); |
c1b1203d | 771 | void rxrpc_release_calls_on_socket(struct rxrpc_sock *); |
8d94aa38 DH |
772 | bool __rxrpc_queue_call(struct rxrpc_call *); |
773 | bool rxrpc_queue_call(struct rxrpc_call *); | |
e34d4234 | 774 | void rxrpc_see_call(struct rxrpc_call *); |
fff72429 DH |
775 | void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); |
776 | void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); | |
00e90712 | 777 | void rxrpc_cleanup_call(struct rxrpc_call *); |
2baec2c3 | 778 | void rxrpc_destroy_all_calls(struct rxrpc_net *); |
17926a79 | 779 | |
dabe5a79 DH |
780 | static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) |
781 | { | |
782 | return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); | |
783 | } | |
784 | ||
785 | static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) | |
786 | { | |
787 | return !rxrpc_is_service_call(call); | |
788 | } | |
789 | ||
f5c17aae DH |
790 | /* |
791 | * Transition a call to the complete state. | |
792 | */ | |
793 | static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, | |
794 | enum rxrpc_call_completion compl, | |
795 | u32 abort_code, | |
796 | int error) | |
797 | { | |
798 | if (call->state < RXRPC_CALL_COMPLETE) { | |
799 | call->abort_code = abort_code; | |
800 | call->error = error; | |
801 | call->completion = compl, | |
802 | call->state = RXRPC_CALL_COMPLETE; | |
1bae5d22 | 803 | trace_rxrpc_call_complete(call); |
c0d058c2 | 804 | wake_up(&call->waitq); |
f5c17aae DH |
805 | return true; |
806 | } | |
807 | return false; | |
808 | } | |
809 | ||
810 | static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, | |
811 | enum rxrpc_call_completion compl, | |
812 | u32 abort_code, | |
813 | int error) | |
814 | { | |
e8d6bbb0 | 815 | bool ret; |
f5c17aae DH |
816 | |
817 | write_lock_bh(&call->state_lock); | |
818 | ret = __rxrpc_set_call_completion(call, compl, abort_code, error); | |
819 | write_unlock_bh(&call->state_lock); | |
820 | return ret; | |
821 | } | |
822 | ||
823 | /* | |
824 | * Record that a call successfully completed. | |
825 | */ | |
e8d6bbb0 | 826 | static inline bool __rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 827 | { |
e8d6bbb0 | 828 | return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); |
f5c17aae DH |
829 | } |
830 | ||
e8d6bbb0 | 831 | static inline bool rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 832 | { |
e8d6bbb0 DH |
833 | bool ret; |
834 | ||
f5c17aae | 835 | write_lock_bh(&call->state_lock); |
e8d6bbb0 | 836 | ret = __rxrpc_call_completed(call); |
f5c17aae | 837 | write_unlock_bh(&call->state_lock); |
e8d6bbb0 | 838 | return ret; |
f5c17aae DH |
839 | } |
840 | ||
841 | /* | |
842 | * Record that a call is locally aborted. | |
843 | */ | |
5a42976d DH |
844 | static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
845 | rxrpc_seq_t seq, | |
f5c17aae DH |
846 | u32 abort_code, int error) |
847 | { | |
a25e21f0 | 848 | trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq, |
5a42976d | 849 | abort_code, error); |
248f219c DH |
850 | return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, |
851 | abort_code, error); | |
f5c17aae DH |
852 | } |
853 | ||
5a42976d DH |
854 | static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
855 | rxrpc_seq_t seq, u32 abort_code, int error) | |
f5c17aae DH |
856 | { |
857 | bool ret; | |
858 | ||
859 | write_lock_bh(&call->state_lock); | |
5a42976d | 860 | ret = __rxrpc_abort_call(why, call, seq, abort_code, error); |
f5c17aae DH |
861 | write_unlock_bh(&call->state_lock); |
862 | return ret; | |
863 | } | |
864 | ||
fb46f6ee DH |
865 | /* |
866 | * Abort a call due to a protocol error. | |
867 | */ | |
868 | static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, | |
869 | struct sk_buff *skb, | |
870 | const char *eproto_why, | |
871 | const char *why, | |
872 | u32 abort_code) | |
873 | { | |
874 | struct rxrpc_skb_priv *sp = rxrpc_skb(skb); | |
875 | ||
876 | trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); | |
877 | return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); | |
878 | } | |
879 | ||
880 | #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ | |
881 | __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ | |
882 | (abort_why), (abort_code)) | |
883 | ||
4a3388c8 DH |
884 | /* |
885 | * conn_client.c | |
886 | */ | |
45025bce DH |
887 | extern unsigned int rxrpc_max_client_connections; |
888 | extern unsigned int rxrpc_reap_client_connections; | |
a158bdd3 DH |
889 | extern unsigned long rxrpc_conn_idle_client_expiry; |
890 | extern unsigned long rxrpc_conn_idle_client_fast_expiry; | |
4a3388c8 DH |
891 | extern struct idr rxrpc_client_conn_ids; |
892 | ||
eb9b9d22 | 893 | void rxrpc_destroy_client_conn_ids(void); |
5e33a23b DH |
894 | int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *, |
895 | struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *, | |
896 | gfp_t); | |
45025bce DH |
897 | void rxrpc_expose_client_call(struct rxrpc_call *); |
898 | void rxrpc_disconnect_client_call(struct rxrpc_call *); | |
899 | void rxrpc_put_client_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
900 | void rxrpc_discard_expired_client_conns(struct work_struct *); |
901 | void rxrpc_destroy_all_client_connections(struct rxrpc_net *); | |
4a3388c8 | 902 | |
17926a79 | 903 | /* |
0d81a51a DH |
904 | * conn_event.c |
905 | */ | |
906 | void rxrpc_process_connection(struct work_struct *); | |
0d81a51a DH |
907 | |
908 | /* | |
909 | * conn_object.c | |
17926a79 | 910 | */ |
dad8aff7 | 911 | extern unsigned int rxrpc_connection_expiry; |
f859ab61 | 912 | extern unsigned int rxrpc_closed_conn_expiry; |
17926a79 | 913 | |
c6d2b8d7 | 914 | struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); |
8496af50 | 915 | struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, |
0099dc58 DH |
916 | struct sk_buff *, |
917 | struct rxrpc_peer **); | |
45025bce | 918 | void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); |
999b69f8 | 919 | void rxrpc_disconnect_call(struct rxrpc_call *); |
45025bce | 920 | void rxrpc_kill_connection(struct rxrpc_connection *); |
363deeab DH |
921 | bool rxrpc_queue_conn(struct rxrpc_connection *); |
922 | void rxrpc_see_connection(struct rxrpc_connection *); | |
923 | void rxrpc_get_connection(struct rxrpc_connection *); | |
924 | struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); | |
925 | void rxrpc_put_service_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
926 | void rxrpc_service_connection_reaper(struct work_struct *); |
927 | void rxrpc_destroy_all_connections(struct rxrpc_net *); | |
17926a79 | 928 | |
19ffa01c DH |
929 | static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
930 | { | |
931 | return conn->out_clientflag; | |
932 | } | |
933 | ||
934 | static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) | |
935 | { | |
e8d70ce1 | 936 | return !rxrpc_conn_is_client(conn); |
19ffa01c DH |
937 | } |
938 | ||
f51b4480 DH |
939 | static inline void rxrpc_put_connection(struct rxrpc_connection *conn) |
940 | { | |
45025bce DH |
941 | if (!conn) |
942 | return; | |
943 | ||
363deeab DH |
944 | if (rxrpc_conn_is_client(conn)) |
945 | rxrpc_put_client_conn(conn); | |
946 | else | |
947 | rxrpc_put_service_conn(conn); | |
5acbee46 DH |
948 | } |
949 | ||
3136ef49 DH |
950 | static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, |
951 | unsigned long expire_at) | |
952 | { | |
953 | timer_reduce(&conn->timer, expire_at); | |
954 | } | |
955 | ||
7877a4a4 DH |
956 | /* |
957 | * conn_service.c | |
958 | */ | |
8496af50 DH |
959 | struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, |
960 | struct sk_buff *); | |
2baec2c3 | 961 | struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); |
4722974d DH |
962 | void rxrpc_new_incoming_connection(struct rxrpc_sock *, |
963 | struct rxrpc_connection *, struct sk_buff *); | |
001c1122 | 964 | void rxrpc_unpublish_service_conn(struct rxrpc_connection *); |
7877a4a4 | 965 | |
17926a79 | 966 | /* |
0d81a51a | 967 | * input.c |
17926a79 | 968 | */ |
5271953c | 969 | int rxrpc_input_packet(struct sock *, struct sk_buff *); |
17926a79 DH |
970 | |
971 | /* | |
0d81a51a | 972 | * insecure.c |
17926a79 | 973 | */ |
0d81a51a | 974 | extern const struct rxrpc_security rxrpc_no_security; |
17926a79 DH |
975 | |
976 | /* | |
0d81a51a | 977 | * key.c |
17926a79 | 978 | */ |
0d81a51a DH |
979 | extern struct key_type key_type_rxrpc; |
980 | extern struct key_type key_type_rxrpc_s; | |
981 | ||
982 | int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); | |
983 | int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); | |
10674a03 | 984 | int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, |
0d81a51a | 985 | u32); |
17926a79 | 986 | |
87563616 DH |
987 | /* |
988 | * local_event.c | |
989 | */ | |
4f95dd78 | 990 | extern void rxrpc_process_local_events(struct rxrpc_local *); |
87563616 | 991 | |
17926a79 | 992 | /* |
0d81a51a | 993 | * local_object.c |
17926a79 | 994 | */ |
2baec2c3 | 995 | struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); |
09d2bf59 DH |
996 | struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); |
997 | struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); | |
998 | void rxrpc_put_local(struct rxrpc_local *); | |
999 | void rxrpc_queue_local(struct rxrpc_local *); | |
2baec2c3 | 1000 | void rxrpc_destroy_all_locals(struct rxrpc_net *); |
17926a79 DH |
1001 | |
1002 | /* | |
0d81a51a | 1003 | * misc.c |
17926a79 | 1004 | */ |
0d81a51a | 1005 | extern unsigned int rxrpc_max_backlog __read_mostly; |
a158bdd3 DH |
1006 | extern unsigned long rxrpc_requested_ack_delay; |
1007 | extern unsigned long rxrpc_soft_ack_delay; | |
1008 | extern unsigned long rxrpc_idle_ack_delay; | |
0d81a51a DH |
1009 | extern unsigned int rxrpc_rx_window_size; |
1010 | extern unsigned int rxrpc_rx_mtu; | |
1011 | extern unsigned int rxrpc_rx_jumbo_max; | |
a158bdd3 | 1012 | extern unsigned long rxrpc_resend_timeout; |
17926a79 | 1013 | |
0d81a51a DH |
1014 | extern const s8 rxrpc_ack_priority[]; |
1015 | ||
2baec2c3 DH |
1016 | /* |
1017 | * net_ns.c | |
1018 | */ | |
1019 | extern unsigned int rxrpc_net_id; | |
1020 | extern struct pernet_operations rxrpc_net_ops; | |
1021 | ||
1022 | static inline struct rxrpc_net *rxrpc_net(struct net *net) | |
1023 | { | |
1024 | return net_generic(net, rxrpc_net_id); | |
1025 | } | |
1026 | ||
17926a79 | 1027 | /* |
0d81a51a | 1028 | * output.c |
17926a79 | 1029 | */ |
bd1fdf8c | 1030 | int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); |
26cb02aa | 1031 | int rxrpc_send_abort_packet(struct rxrpc_call *); |
a1767077 | 1032 | int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); |
248f219c | 1033 | void rxrpc_reject_packets(struct rxrpc_local *); |
ace45bec | 1034 | void rxrpc_send_keepalive(struct rxrpc_peer *); |
17926a79 DH |
1035 | |
1036 | /* | |
abe89ef0 | 1037 | * peer_event.c |
0d81a51a | 1038 | */ |
abe89ef0 | 1039 | void rxrpc_error_report(struct sock *); |
cf1a6474 DH |
1040 | void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, |
1041 | rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); | |
ace45bec | 1042 | void rxrpc_peer_keepalive_worker(struct work_struct *); |
0d81a51a DH |
1043 | |
1044 | /* | |
1045 | * peer_object.c | |
17926a79 | 1046 | */ |
be6e6707 DH |
1047 | struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
1048 | const struct sockaddr_rxrpc *); | |
5e33a23b | 1049 | struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *, |
be6e6707 DH |
1050 | struct sockaddr_rxrpc *, gfp_t); |
1051 | struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); | |
5e33a23b DH |
1052 | void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *, |
1053 | struct rxrpc_peer *); | |
17226f12 | 1054 | void rxrpc_destroy_all_peers(struct rxrpc_net *); |
1159d4b4 DH |
1055 | struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); |
1056 | struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); | |
1057 | void rxrpc_put_peer(struct rxrpc_peer *); | |
17926a79 DH |
1058 | |
1059 | /* | |
0d81a51a | 1060 | * proc.c |
17926a79 | 1061 | */ |
c3506372 CH |
1062 | extern const struct seq_operations rxrpc_call_seq_ops; |
1063 | extern const struct seq_operations rxrpc_connection_seq_ops; | |
17926a79 DH |
1064 | |
1065 | /* | |
0d81a51a | 1066 | * recvmsg.c |
17926a79 | 1067 | */ |
248f219c | 1068 | void rxrpc_notify_socket(struct rxrpc_call *); |
1b784140 | 1069 | int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
17926a79 DH |
1070 | |
1071 | /* | |
0d81a51a DH |
1072 | * rxkad.c |
1073 | */ | |
1074 | #ifdef CONFIG_RXKAD | |
1075 | extern const struct rxrpc_security rxkad; | |
1076 | #endif | |
1077 | ||
1078 | /* | |
1079 | * security.c | |
17926a79 | 1080 | */ |
648af7fc DH |
1081 | int __init rxrpc_init_security(void); |
1082 | void rxrpc_exit_security(void); | |
c1b1203d JP |
1083 | int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
1084 | int rxrpc_init_server_conn_security(struct rxrpc_connection *); | |
71a17de3 | 1085 | |
0b58b8a1 DH |
1086 | /* |
1087 | * sendmsg.c | |
1088 | */ | |
1089 | int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); | |
17926a79 DH |
1090 | |
1091 | /* | |
0d81a51a | 1092 | * skbuff.c |
17926a79 | 1093 | */ |
d001648e | 1094 | void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); |
c1b1203d | 1095 | void rxrpc_packet_destructor(struct sk_buff *); |
71f3ca40 DH |
1096 | void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); |
1097 | void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1098 | void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1099 | void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
1100 | void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
df844fd4 | 1101 | void rxrpc_purge_queue(struct sk_buff_head *); |
17926a79 | 1102 | |
5873c083 DH |
1103 | /* |
1104 | * sysctl.c | |
1105 | */ | |
1106 | #ifdef CONFIG_SYSCTL | |
1107 | extern int __init rxrpc_sysctl_init(void); | |
1108 | extern void rxrpc_sysctl_exit(void); | |
1109 | #else | |
1110 | static inline int __init rxrpc_sysctl_init(void) { return 0; } | |
1111 | static inline void rxrpc_sysctl_exit(void) {} | |
1112 | #endif | |
1113 | ||
be6e6707 DH |
1114 | /* |
1115 | * utils.c | |
1116 | */ | |
7b674e39 DH |
1117 | int rxrpc_extract_addr_from_skb(struct rxrpc_local *, struct sockaddr_rxrpc *, |
1118 | struct sk_buff *); | |
be6e6707 | 1119 | |
248f219c DH |
1120 | static inline bool before(u32 seq1, u32 seq2) |
1121 | { | |
1122 | return (s32)(seq1 - seq2) < 0; | |
1123 | } | |
1124 | static inline bool before_eq(u32 seq1, u32 seq2) | |
1125 | { | |
1126 | return (s32)(seq1 - seq2) <= 0; | |
1127 | } | |
1128 | static inline bool after(u32 seq1, u32 seq2) | |
1129 | { | |
1130 | return (s32)(seq1 - seq2) > 0; | |
1131 | } | |
1132 | static inline bool after_eq(u32 seq1, u32 seq2) | |
1133 | { | |
1134 | return (s32)(seq1 - seq2) >= 0; | |
1135 | } | |
1136 | ||
17926a79 DH |
1137 | /* |
1138 | * debug tracing | |
1139 | */ | |
95c96174 | 1140 | extern unsigned int rxrpc_debug; |
17926a79 DH |
1141 | |
1142 | #define dbgprintk(FMT,...) \ | |
9f389f4b | 1143 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
17926a79 | 1144 | |
0dc47877 HH |
1145 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1146 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
17926a79 DH |
1147 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1148 | #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) | |
1149 | #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) | |
1150 | ||
1151 | ||
1152 | #if defined(__KDEBUG) | |
1153 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1154 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1155 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1156 | #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) | |
1157 | #define _net(FMT,...) knet(FMT,##__VA_ARGS__) | |
1158 | ||
1159 | #elif defined(CONFIG_AF_RXRPC_DEBUG) | |
1160 | #define RXRPC_DEBUG_KENTER 0x01 | |
1161 | #define RXRPC_DEBUG_KLEAVE 0x02 | |
1162 | #define RXRPC_DEBUG_KDEBUG 0x04 | |
1163 | #define RXRPC_DEBUG_KPROTO 0x08 | |
1164 | #define RXRPC_DEBUG_KNET 0x10 | |
1165 | ||
1166 | #define _enter(FMT,...) \ | |
1167 | do { \ | |
1168 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ | |
1169 | kenter(FMT,##__VA_ARGS__); \ | |
1170 | } while (0) | |
1171 | ||
1172 | #define _leave(FMT,...) \ | |
1173 | do { \ | |
1174 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ | |
1175 | kleave(FMT,##__VA_ARGS__); \ | |
1176 | } while (0) | |
1177 | ||
1178 | #define _debug(FMT,...) \ | |
1179 | do { \ | |
1180 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ | |
1181 | kdebug(FMT,##__VA_ARGS__); \ | |
1182 | } while (0) | |
1183 | ||
1184 | #define _proto(FMT,...) \ | |
1185 | do { \ | |
1186 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ | |
1187 | kproto(FMT,##__VA_ARGS__); \ | |
1188 | } while (0) | |
1189 | ||
1190 | #define _net(FMT,...) \ | |
1191 | do { \ | |
1192 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ | |
1193 | knet(FMT,##__VA_ARGS__); \ | |
1194 | } while (0) | |
1195 | ||
1196 | #else | |
12fdff3f DH |
1197 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1198 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1199 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
1200 | #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) | |
1201 | #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) | |
17926a79 DH |
1202 | #endif |
1203 | ||
1204 | /* | |
1205 | * debug assertion checking | |
1206 | */ | |
1207 | #if 1 // defined(__KDEBUGALL) | |
1208 | ||
1209 | #define ASSERT(X) \ | |
1210 | do { \ | |
1211 | if (unlikely(!(X))) { \ | |
9b6d5398 | 1212 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1213 | BUG(); \ |
1214 | } \ | |
b4f1342f | 1215 | } while (0) |
17926a79 DH |
1216 | |
1217 | #define ASSERTCMP(X, OP, Y) \ | |
1218 | do { \ | |
cf13258f DH |
1219 | __typeof__(X) _x = (X); \ |
1220 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 | 1221 | if (unlikely(!(_x OP _y))) { \ |
cf13258f DH |
1222 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
1223 | (unsigned long)_x, (unsigned long)_x, #OP, \ | |
1224 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1225 | BUG(); \ |
1226 | } \ | |
b4f1342f | 1227 | } while (0) |
17926a79 DH |
1228 | |
1229 | #define ASSERTIF(C, X) \ | |
1230 | do { \ | |
1231 | if (unlikely((C) && !(X))) { \ | |
9b6d5398 | 1232 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1233 | BUG(); \ |
1234 | } \ | |
b4f1342f | 1235 | } while (0) |
17926a79 DH |
1236 | |
1237 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1238 | do { \ | |
cf13258f DH |
1239 | __typeof__(X) _x = (X); \ |
1240 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 JP |
1241 | if (unlikely((C) && !(_x OP _y))) { \ |
1242 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
cf13258f DH |
1243 | (unsigned long)_x, (unsigned long)_x, #OP, \ |
1244 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1245 | BUG(); \ |
1246 | } \ | |
b4f1342f | 1247 | } while (0) |
17926a79 DH |
1248 | |
1249 | #else | |
1250 | ||
1251 | #define ASSERT(X) \ | |
1252 | do { \ | |
b4f1342f | 1253 | } while (0) |
17926a79 DH |
1254 | |
1255 | #define ASSERTCMP(X, OP, Y) \ | |
1256 | do { \ | |
b4f1342f | 1257 | } while (0) |
17926a79 DH |
1258 | |
1259 | #define ASSERTIF(C, X) \ | |
1260 | do { \ | |
b4f1342f | 1261 | } while (0) |
17926a79 DH |
1262 | |
1263 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1264 | do { \ | |
b4f1342f | 1265 | } while (0) |
17926a79 DH |
1266 | |
1267 | #endif /* __KDEBUGALL */ |