Commit | Line | Data |
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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
17926a79 DH |
2 | /* AF_RXRPC internal definitions |
3 | * | |
4 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
5 | * Written by David Howells (dhowells@redhat.com) | |
17926a79 DH |
6 | */ |
7 | ||
be6e6707 | 8 | #include <linux/atomic.h> |
8496af50 | 9 | #include <linux/seqlock.h> |
2baec2c3 DH |
10 | #include <net/net_namespace.h> |
11 | #include <net/netns/generic.h> | |
e0e4d82f | 12 | #include <net/sock.h> |
be6e6707 | 13 | #include <net/af_rxrpc.h> |
ddc6c70f | 14 | #include "protocol.h" |
17926a79 DH |
15 | |
16 | #if 0 | |
17 | #define CHECK_SLAB_OKAY(X) \ | |
18 | BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ | |
19 | (POISON_FREE << 8 | POISON_FREE)) | |
20 | #else | |
b4f1342f | 21 | #define CHECK_SLAB_OKAY(X) do {} while (0) |
17926a79 DH |
22 | #endif |
23 | ||
17926a79 DH |
24 | #define FCRYPT_BSIZE 8 |
25 | struct rxrpc_crypt { | |
26 | union { | |
27 | u8 x[FCRYPT_BSIZE]; | |
91e916cf | 28 | __be32 n[2]; |
17926a79 DH |
29 | }; |
30 | } __attribute__((aligned(8))); | |
31 | ||
651350d1 DH |
32 | #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) |
33 | #define rxrpc_queue_delayed_work(WS,D) \ | |
34 | queue_delayed_work(rxrpc_workqueue, (WS), (D)) | |
35 | ||
cc8feb8e DH |
36 | struct rxrpc_connection; |
37 | ||
d001648e | 38 | /* |
ece64fec DH |
39 | * Mark applied to socket buffers in skb->mark. skb->priority is used |
40 | * to pass supplementary information. | |
d001648e DH |
41 | */ |
42 | enum rxrpc_skb_mark { | |
ece64fec DH |
43 | RXRPC_SKB_MARK_REJECT_BUSY, /* Reject with BUSY */ |
44 | RXRPC_SKB_MARK_REJECT_ABORT, /* Reject with ABORT (code in skb->priority) */ | |
d001648e DH |
45 | }; |
46 | ||
17926a79 DH |
47 | /* |
48 | * sk_state for RxRPC sockets | |
49 | */ | |
50 | enum { | |
2341e077 DH |
51 | RXRPC_UNBOUND = 0, |
52 | RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ | |
17926a79 | 53 | RXRPC_CLIENT_BOUND, /* client local address bound */ |
17926a79 | 54 | RXRPC_SERVER_BOUND, /* server local address bound */ |
28036f44 | 55 | RXRPC_SERVER_BOUND2, /* second server local address bound */ |
17926a79 | 56 | RXRPC_SERVER_LISTENING, /* server listening for connections */ |
210f0353 | 57 | RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ |
17926a79 DH |
58 | RXRPC_CLOSE, /* socket is being closed */ |
59 | }; | |
60 | ||
2baec2c3 DH |
61 | /* |
62 | * Per-network namespace data. | |
63 | */ | |
64 | struct rxrpc_net { | |
65 | struct proc_dir_entry *proc_net; /* Subdir in /proc/net */ | |
66 | u32 epoch; /* Local epoch for detecting local-end reset */ | |
67 | struct list_head calls; /* List of calls active in this namespace */ | |
68 | rwlock_t call_lock; /* Lock for ->calls */ | |
d3be4d24 | 69 | atomic_t nr_calls; /* Count of allocated calls */ |
2baec2c3 | 70 | |
31f5f9a1 | 71 | atomic_t nr_conns; |
2baec2c3 DH |
72 | struct list_head conn_proc_list; /* List of conns in this namespace for proc */ |
73 | struct list_head service_conns; /* Service conns in this namespace */ | |
74 | rwlock_t conn_lock; /* Lock for ->conn_proc_list, ->service_conns */ | |
3d18cbb7 DH |
75 | struct work_struct service_conn_reaper; |
76 | struct timer_list service_conn_reap_timer; | |
2baec2c3 DH |
77 | |
78 | unsigned int nr_client_conns; | |
79 | unsigned int nr_active_client_conns; | |
80 | bool kill_all_client_conns; | |
f859ab61 | 81 | bool live; |
2baec2c3 DH |
82 | spinlock_t client_conn_cache_lock; /* Lock for ->*_client_conns */ |
83 | spinlock_t client_conn_discard_lock; /* Prevent multiple discarders */ | |
84 | struct list_head waiting_client_conns; | |
85 | struct list_head active_client_conns; | |
86 | struct list_head idle_client_conns; | |
3d18cbb7 DH |
87 | struct work_struct client_conn_reaper; |
88 | struct timer_list client_conn_reap_timer; | |
2baec2c3 DH |
89 | |
90 | struct list_head local_endpoints; | |
91 | struct mutex local_mutex; /* Lock for ->local_endpoints */ | |
92 | ||
2baec2c3 | 93 | DECLARE_HASHTABLE (peer_hash, 10); |
ace45bec DH |
94 | spinlock_t peer_hash_lock; /* Lock for ->peer_hash */ |
95 | ||
96 | #define RXRPC_KEEPALIVE_TIME 20 /* NAT keepalive time in seconds */ | |
97 | u8 peer_keepalive_cursor; | |
330bdcfa DH |
98 | time64_t peer_keepalive_base; |
99 | struct list_head peer_keepalive[32]; | |
100 | struct list_head peer_keepalive_new; | |
ace45bec DH |
101 | struct timer_list peer_keepalive_timer; |
102 | struct work_struct peer_keepalive_work; | |
2baec2c3 DH |
103 | }; |
104 | ||
00e90712 DH |
105 | /* |
106 | * Service backlog preallocation. | |
107 | * | |
108 | * This contains circular buffers of preallocated peers, connections and calls | |
109 | * for incoming service calls and their head and tail pointers. This allows | |
110 | * calls to be set up in the data_ready handler, thereby avoiding the need to | |
111 | * shuffle packets around so much. | |
112 | */ | |
113 | struct rxrpc_backlog { | |
114 | unsigned short peer_backlog_head; | |
115 | unsigned short peer_backlog_tail; | |
116 | unsigned short conn_backlog_head; | |
117 | unsigned short conn_backlog_tail; | |
118 | unsigned short call_backlog_head; | |
119 | unsigned short call_backlog_tail; | |
120 | #define RXRPC_BACKLOG_MAX 32 | |
121 | struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; | |
122 | struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; | |
123 | struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; | |
124 | }; | |
125 | ||
17926a79 DH |
126 | /* |
127 | * RxRPC socket definition | |
128 | */ | |
129 | struct rxrpc_sock { | |
130 | /* WARNING: sk has to be the first member */ | |
131 | struct sock sk; | |
d001648e | 132 | rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ |
00e90712 | 133 | rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ |
17926a79 | 134 | struct rxrpc_local *local; /* local endpoint */ |
00e90712 | 135 | struct rxrpc_backlog *backlog; /* Preallocation for services */ |
248f219c DH |
136 | spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ |
137 | struct list_head sock_calls; /* List of calls owned by this socket */ | |
138 | struct list_head to_be_accepted; /* calls awaiting acceptance */ | |
139 | struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ | |
140 | rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ | |
17926a79 DH |
141 | struct key *key; /* security for this socket */ |
142 | struct key *securities; /* list of server security descriptors */ | |
00e90712 | 143 | struct rb_root calls; /* User ID -> call mapping */ |
17926a79 | 144 | unsigned long flags; |
2341e077 | 145 | #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ |
17926a79 DH |
146 | rwlock_t call_lock; /* lock for calls */ |
147 | u32 min_sec_level; /* minimum security level */ | |
148 | #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT | |
cc8feb8e | 149 | bool exclusive; /* Exclusive connection for a client socket */ |
28036f44 | 150 | u16 second_service; /* Additional service bound to the endpoint */ |
4722974d DH |
151 | struct { |
152 | /* Service upgrade information */ | |
153 | u16 from; /* Service ID to upgrade (if not 0) */ | |
154 | u16 to; /* service ID to upgrade to */ | |
155 | } service_upgrade; | |
cc8feb8e | 156 | sa_family_t family; /* Protocol family created with */ |
4722974d | 157 | struct sockaddr_rxrpc srx; /* Primary Service/local addresses */ |
2341e077 | 158 | struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
17926a79 DH |
159 | }; |
160 | ||
161 | #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) | |
162 | ||
0d12f8a4 DH |
163 | /* |
164 | * CPU-byteorder normalised Rx packet header. | |
165 | */ | |
166 | struct rxrpc_host_header { | |
167 | u32 epoch; /* client boot timestamp */ | |
168 | u32 cid; /* connection and channel ID */ | |
169 | u32 callNumber; /* call ID (0 for connection-level packets) */ | |
170 | u32 seq; /* sequence number of pkt in call stream */ | |
171 | u32 serial; /* serial number of pkt sent to network */ | |
172 | u8 type; /* packet type */ | |
173 | u8 flags; /* packet flags */ | |
174 | u8 userStatus; /* app-layer defined status */ | |
175 | u8 securityIndex; /* security protocol ID */ | |
176 | union { | |
177 | u16 _rsvd; /* reserved */ | |
178 | u16 cksum; /* kerberos security checksum */ | |
179 | }; | |
180 | u16 serviceId; /* service ID */ | |
181 | } __packed; | |
182 | ||
17926a79 DH |
183 | /* |
184 | * RxRPC socket buffer private variables | |
185 | * - max 48 bytes (struct sk_buff::cb) | |
186 | */ | |
187 | struct rxrpc_skb_priv { | |
987db9f7 | 188 | atomic_t nr_ring_pins; /* Number of rxtx ring pins */ |
c3c9e3df DH |
189 | u8 nr_subpackets; /* Number of subpackets */ |
190 | u8 rx_flags; /* Received packet flags */ | |
191 | #define RXRPC_SKB_INCL_LAST 0x01 /* - Includes last packet */ | |
b311e684 | 192 | #define RXRPC_SKB_TX_BUFFER 0x02 /* - Is transmit buffer */ |
17926a79 | 193 | union { |
17926a79 | 194 | int remain; /* amount of space remaining for next write */ |
c3c9e3df DH |
195 | |
196 | /* List of requested ACKs on subpackets */ | |
197 | unsigned long rx_req_ack[(RXRPC_MAX_NR_JUMBO + BITS_PER_LONG - 1) / | |
198 | BITS_PER_LONG]; | |
17926a79 DH |
199 | }; |
200 | ||
0d12f8a4 | 201 | struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ |
17926a79 DH |
202 | }; |
203 | ||
204 | #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) | |
205 | ||
17926a79 DH |
206 | /* |
207 | * RxRPC security module interface | |
208 | */ | |
209 | struct rxrpc_security { | |
17926a79 DH |
210 | const char *name; /* name of this service */ |
211 | u8 security_index; /* security type provided */ | |
212 | ||
648af7fc DH |
213 | /* Initialise a security service */ |
214 | int (*init)(void); | |
215 | ||
216 | /* Clean up a security service */ | |
217 | void (*exit)(void); | |
218 | ||
17926a79 DH |
219 | /* initialise a connection's security */ |
220 | int (*init_connection_security)(struct rxrpc_connection *); | |
221 | ||
222 | /* prime a connection's packet security */ | |
a263629d | 223 | int (*prime_packet_security)(struct rxrpc_connection *); |
17926a79 DH |
224 | |
225 | /* impose security on a packet */ | |
a263629d | 226 | int (*secure_packet)(struct rxrpc_call *, |
17926a79 DH |
227 | struct sk_buff *, |
228 | size_t, | |
229 | void *); | |
230 | ||
231 | /* verify the security on a received packet */ | |
5a42976d | 232 | int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, |
248f219c DH |
233 | unsigned int, unsigned int, rxrpc_seq_t, u16); |
234 | ||
1db88c53 DH |
235 | /* Free crypto request on a call */ |
236 | void (*free_call_crypto)(struct rxrpc_call *); | |
237 | ||
248f219c DH |
238 | /* Locate the data in a received packet that has been verified. */ |
239 | void (*locate_data)(struct rxrpc_call *, struct sk_buff *, | |
240 | unsigned int *, unsigned int *); | |
17926a79 DH |
241 | |
242 | /* issue a challenge */ | |
243 | int (*issue_challenge)(struct rxrpc_connection *); | |
244 | ||
245 | /* respond to a challenge */ | |
246 | int (*respond_to_challenge)(struct rxrpc_connection *, | |
247 | struct sk_buff *, | |
248 | u32 *); | |
249 | ||
250 | /* verify a response */ | |
251 | int (*verify_response)(struct rxrpc_connection *, | |
252 | struct sk_buff *, | |
253 | u32 *); | |
254 | ||
255 | /* clear connection security */ | |
256 | void (*clear)(struct rxrpc_connection *); | |
257 | }; | |
258 | ||
259 | /* | |
4f95dd78 DH |
260 | * RxRPC local transport endpoint description |
261 | * - owned by a single AF_RXRPC socket | |
262 | * - pointed to by transport socket struct sk_user_data | |
17926a79 DH |
263 | */ |
264 | struct rxrpc_local { | |
4f95dd78 | 265 | struct rcu_head rcu; |
730c5fd4 DH |
266 | atomic_t active_users; /* Number of users of the local endpoint */ |
267 | atomic_t usage; /* Number of references to the structure */ | |
2baec2c3 | 268 | struct rxrpc_net *rxnet; /* The network ns in which this resides */ |
4f95dd78 | 269 | struct list_head link; |
17926a79 | 270 | struct socket *socket; /* my UDP socket */ |
4f95dd78 | 271 | struct work_struct processor; |
1e9e5c95 | 272 | struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */ |
17926a79 | 273 | struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ |
17926a79 | 274 | struct sk_buff_head reject_queue; /* packets awaiting rejection */ |
44ba0698 | 275 | struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ |
999b69f8 DH |
276 | struct rb_root client_conns; /* Client connections by socket params */ |
277 | spinlock_t client_conns_lock; /* Lock for client_conns */ | |
17926a79 DH |
278 | spinlock_t lock; /* access lock */ |
279 | rwlock_t services_lock; /* lock for services list */ | |
17926a79 | 280 | int debug_id; /* debug ID for printks */ |
4f95dd78 | 281 | bool dead; |
f859ab61 | 282 | bool service_closed; /* Service socket closed */ |
17926a79 DH |
283 | struct sockaddr_rxrpc srx; /* local address */ |
284 | }; | |
285 | ||
286 | /* | |
287 | * RxRPC remote transport endpoint definition | |
be6e6707 | 288 | * - matched by local endpoint, remote port, address and protocol type |
17926a79 DH |
289 | */ |
290 | struct rxrpc_peer { | |
be6e6707 DH |
291 | struct rcu_head rcu; /* This must be first */ |
292 | atomic_t usage; | |
293 | unsigned long hash_key; | |
294 | struct hlist_node hash_link; | |
295 | struct rxrpc_local *local; | |
f66d7490 | 296 | struct hlist_head error_targets; /* targets for net error distribution */ |
aa390bbe | 297 | struct rb_root service_conns; /* Service connections */ |
330bdcfa | 298 | struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ |
ace45bec | 299 | time64_t last_tx_at; /* Last time packet sent here */ |
8496af50 | 300 | seqlock_t service_conn_lock; |
17926a79 | 301 | spinlock_t lock; /* access lock */ |
95c96174 ED |
302 | unsigned int if_mtu; /* interface MTU for this peer */ |
303 | unsigned int mtu; /* network MTU for this peer */ | |
304 | unsigned int maxdata; /* data size (MTU - hdrsize) */ | |
17926a79 DH |
305 | unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ |
306 | int debug_id; /* debug ID for printks */ | |
17926a79 DH |
307 | struct sockaddr_rxrpc srx; /* remote address */ |
308 | ||
309 | /* calculated RTT cache */ | |
310 | #define RXRPC_RTT_CACHE_SIZE 32 | |
c1e15b49 | 311 | spinlock_t rtt_input_lock; /* RTT lock for input routine */ |
0d4b103c | 312 | ktime_t rtt_last_req; /* Time of last RTT request */ |
cf1a6474 DH |
313 | u64 rtt; /* Current RTT estimate (in nS) */ |
314 | u64 rtt_sum; /* Sum of cache contents */ | |
315 | u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ | |
316 | u8 rtt_cursor; /* next entry at which to insert */ | |
317 | u8 rtt_usage; /* amount of cache actually used */ | |
f7aec129 DH |
318 | |
319 | u8 cong_cwnd; /* Congestion window size */ | |
17926a79 DH |
320 | }; |
321 | ||
19ffa01c DH |
322 | /* |
323 | * Keys for matching a connection. | |
324 | */ | |
325 | struct rxrpc_conn_proto { | |
e8d70ce1 DH |
326 | union { |
327 | struct { | |
328 | u32 epoch; /* epoch of this connection */ | |
329 | u32 cid; /* connection ID */ | |
330 | }; | |
331 | u64 index_key; | |
19ffa01c DH |
332 | }; |
333 | }; | |
334 | ||
335 | struct rxrpc_conn_parameters { | |
336 | struct rxrpc_local *local; /* Representation of local endpoint */ | |
337 | struct rxrpc_peer *peer; /* Remote endpoint */ | |
338 | struct key *key; /* Security details */ | |
339 | bool exclusive; /* T if conn is exclusive */ | |
4e255721 | 340 | bool upgrade; /* T if service ID can be upgraded */ |
19ffa01c DH |
341 | u16 service_id; /* Service ID for this connection */ |
342 | u32 security_level; /* Security level selected */ | |
343 | }; | |
344 | ||
bba304db DH |
345 | /* |
346 | * Bits in the connection flags. | |
347 | */ | |
348 | enum rxrpc_conn_flag { | |
349 | RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ | |
001c1122 DH |
350 | RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ |
351 | RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ | |
45025bce DH |
352 | RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ |
353 | RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ | |
354 | RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ | |
4e255721 | 355 | RXRPC_CONN_PROBING_FOR_UPGRADE, /* Probing for service upgrade */ |
3136ef49 DH |
356 | RXRPC_CONN_FINAL_ACK_0, /* Need final ACK for channel 0 */ |
357 | RXRPC_CONN_FINAL_ACK_1, /* Need final ACK for channel 1 */ | |
358 | RXRPC_CONN_FINAL_ACK_2, /* Need final ACK for channel 2 */ | |
359 | RXRPC_CONN_FINAL_ACK_3, /* Need final ACK for channel 3 */ | |
bba304db DH |
360 | }; |
361 | ||
3136ef49 DH |
362 | #define RXRPC_CONN_FINAL_ACK_MASK ((1UL << RXRPC_CONN_FINAL_ACK_0) | \ |
363 | (1UL << RXRPC_CONN_FINAL_ACK_1) | \ | |
364 | (1UL << RXRPC_CONN_FINAL_ACK_2) | \ | |
365 | (1UL << RXRPC_CONN_FINAL_ACK_3)) | |
366 | ||
bba304db DH |
367 | /* |
368 | * Events that can be raised upon a connection. | |
369 | */ | |
370 | enum rxrpc_conn_event { | |
371 | RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ | |
372 | }; | |
373 | ||
45025bce DH |
374 | /* |
375 | * The connection cache state. | |
376 | */ | |
377 | enum rxrpc_conn_cache_state { | |
378 | RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ | |
379 | RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ | |
380 | RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ | |
4e255721 | 381 | RXRPC_CONN_CLIENT_UPGRADE, /* Conn is on active list, probing for upgrade */ |
45025bce DH |
382 | RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ |
383 | RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ | |
363deeab | 384 | RXRPC_CONN__NR_CACHE_STATES |
45025bce DH |
385 | }; |
386 | ||
bba304db DH |
387 | /* |
388 | * The connection protocol state. | |
389 | */ | |
390 | enum rxrpc_conn_proto_state { | |
391 | RXRPC_CONN_UNUSED, /* Connection not yet attempted */ | |
392 | RXRPC_CONN_CLIENT, /* Client connection */ | |
00e90712 | 393 | RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ |
bba304db DH |
394 | RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ |
395 | RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ | |
396 | RXRPC_CONN_SERVICE, /* Service secured connection */ | |
397 | RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ | |
398 | RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ | |
bba304db DH |
399 | RXRPC_CONN__NR_STATES |
400 | }; | |
401 | ||
17926a79 DH |
402 | /* |
403 | * RxRPC connection definition | |
aa390bbe | 404 | * - matched by { local, peer, epoch, conn_id, direction } |
17926a79 DH |
405 | * - each connection can only handle four simultaneous calls |
406 | */ | |
407 | struct rxrpc_connection { | |
19ffa01c DH |
408 | struct rxrpc_conn_proto proto; |
409 | struct rxrpc_conn_parameters params; | |
410 | ||
45025bce DH |
411 | atomic_t usage; |
412 | struct rcu_head rcu; | |
413 | struct list_head cache_link; | |
a1399f8b | 414 | |
45025bce DH |
415 | spinlock_t channel_lock; |
416 | unsigned char active_chans; /* Mask of active channels */ | |
417 | #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) | |
418 | struct list_head waiting_calls; /* Calls waiting for channels */ | |
a1399f8b | 419 | struct rxrpc_channel { |
3136ef49 | 420 | unsigned long final_ack_at; /* Time at which to issue final ACK */ |
a1399f8b | 421 | struct rxrpc_call __rcu *call; /* Active call */ |
4764c0da | 422 | unsigned int call_debug_id; /* call->debug_id */ |
a1399f8b DH |
423 | u32 call_id; /* ID of current call */ |
424 | u32 call_counter; /* Call ID counter */ | |
425 | u32 last_call; /* ID of last call */ | |
18bfeba5 | 426 | u8 last_type; /* Type of last packet */ |
18bfeba5 DH |
427 | union { |
428 | u32 last_seq; | |
429 | u32 last_abort; | |
430 | }; | |
a1399f8b | 431 | } channels[RXRPC_MAXCALLS]; |
999b69f8 | 432 | |
3136ef49 | 433 | struct timer_list timer; /* Conn event timer */ |
17926a79 | 434 | struct work_struct processor; /* connection event processor */ |
999b69f8 DH |
435 | union { |
436 | struct rb_node client_node; /* Node in local->client_conns */ | |
aa390bbe | 437 | struct rb_node service_node; /* Node in peer->service_conns */ |
999b69f8 | 438 | }; |
4d028b2c | 439 | struct list_head proc_link; /* link in procfs list */ |
17926a79 | 440 | struct list_head link; /* link in master connection list */ |
17926a79 | 441 | struct sk_buff_head rx_queue; /* received conn-level packets */ |
648af7fc | 442 | const struct rxrpc_security *security; /* applied security module */ |
17926a79 | 443 | struct key *server_key; /* security for this service */ |
69d826fa | 444 | struct crypto_sync_skcipher *cipher; /* encryption handle */ |
17926a79 | 445 | struct rxrpc_crypt csum_iv; /* packet checksum base */ |
4a3388c8 | 446 | unsigned long flags; |
17926a79 | 447 | unsigned long events; |
f51b4480 | 448 | unsigned long idle_timestamp; /* Time at which last became idle */ |
17926a79 | 449 | spinlock_t state_lock; /* state-change lock */ |
cf13258f DH |
450 | enum rxrpc_conn_cache_state cache_state; |
451 | enum rxrpc_conn_proto_state state; /* current state of connection */ | |
64753092 | 452 | u32 abort_code; /* Abort code of connection abort */ |
17926a79 | 453 | int debug_id; /* debug ID for printks */ |
17926a79 | 454 | atomic_t serial; /* packet serial number counter */ |
563ea7d5 | 455 | unsigned int hi_serial; /* highest serial number received */ |
5a924b89 | 456 | u32 security_nonce; /* response re-use preventer */ |
c1e15b49 | 457 | u32 service_id; /* Service ID, possibly upgraded */ |
17926a79 | 458 | u8 size_align; /* data size alignment (for security) */ |
17926a79 | 459 | u8 security_size; /* security header size */ |
17926a79 | 460 | u8 security_ix; /* security type */ |
17926a79 | 461 | u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ |
64753092 | 462 | short error; /* Local error code */ |
17926a79 DH |
463 | }; |
464 | ||
dc71db34 DH |
465 | static inline bool rxrpc_to_server(const struct rxrpc_skb_priv *sp) |
466 | { | |
467 | return sp->hdr.flags & RXRPC_CLIENT_INITIATED; | |
468 | } | |
469 | ||
470 | static inline bool rxrpc_to_client(const struct rxrpc_skb_priv *sp) | |
471 | { | |
472 | return !rxrpc_to_server(sp); | |
473 | } | |
474 | ||
5b8848d1 DH |
475 | /* |
476 | * Flags in call->flags. | |
477 | */ | |
478 | enum rxrpc_call_flag { | |
479 | RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ | |
5b8848d1 | 480 | RXRPC_CALL_HAS_USERID, /* has a user ID attached */ |
dabe5a79 | 481 | RXRPC_CALL_IS_SERVICE, /* Call is service call */ |
45025bce | 482 | RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ |
248f219c DH |
483 | RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ |
484 | RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ | |
a5af7e1f | 485 | RXRPC_CALL_SEND_PING, /* A ping will need to be sent */ |
8e83134d | 486 | RXRPC_CALL_PINGING, /* Ping in process */ |
57494343 | 487 | RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */ |
c54e43d7 | 488 | RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */ |
1a025028 | 489 | RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */ |
d0b35a42 | 490 | RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */ |
b960a34b | 491 | RXRPC_CALL_IS_INTR, /* The call is interruptible */ |
5b8848d1 DH |
492 | }; |
493 | ||
494 | /* | |
495 | * Events that can be raised on a call. | |
496 | */ | |
497 | enum rxrpc_call_event { | |
4c198ad1 | 498 | RXRPC_CALL_EV_ACK, /* need to generate ACK */ |
4c198ad1 | 499 | RXRPC_CALL_EV_ABORT, /* need to generate abort */ |
4c198ad1 | 500 | RXRPC_CALL_EV_RESEND, /* Tx resend required */ |
a5af7e1f | 501 | RXRPC_CALL_EV_PING, /* Ping send required */ |
a158bdd3 | 502 | RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */ |
bd1fdf8c | 503 | RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */ |
5b8848d1 DH |
504 | }; |
505 | ||
506 | /* | |
507 | * The states that a call can be in. | |
508 | */ | |
509 | enum rxrpc_call_state { | |
999b69f8 DH |
510 | RXRPC_CALL_UNINITIALISED, |
511 | RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ | |
5b8848d1 DH |
512 | RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ |
513 | RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ | |
514 | RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ | |
00e90712 | 515 | RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ |
5b8848d1 DH |
516 | RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ |
517 | RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ | |
518 | RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ | |
519 | RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ | |
520 | RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ | |
521 | RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ | |
f5c17aae | 522 | RXRPC_CALL_COMPLETE, /* - call complete */ |
f5c17aae DH |
523 | NR__RXRPC_CALL_STATES |
524 | }; | |
525 | ||
e122d845 DH |
526 | /* |
527 | * Call completion condition (state == RXRPC_CALL_COMPLETE). | |
528 | */ | |
529 | enum rxrpc_call_completion { | |
530 | RXRPC_CALL_SUCCEEDED, /* - Normal termination */ | |
531 | RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ | |
532 | RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ | |
533 | RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ | |
534 | RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ | |
535 | NR__RXRPC_CALL_COMPLETIONS | |
536 | }; | |
537 | ||
57494343 DH |
538 | /* |
539 | * Call Tx congestion management modes. | |
540 | */ | |
541 | enum rxrpc_congest_mode { | |
542 | RXRPC_CALL_SLOW_START, | |
543 | RXRPC_CALL_CONGEST_AVOIDANCE, | |
544 | RXRPC_CALL_PACKET_LOSS, | |
545 | RXRPC_CALL_FAST_RETRANSMIT, | |
546 | NR__RXRPC_CONGEST_MODES | |
547 | }; | |
548 | ||
17926a79 DH |
549 | /* |
550 | * RxRPC call definition | |
551 | * - matched by { connection, call_id } | |
552 | */ | |
553 | struct rxrpc_call { | |
dee46364 | 554 | struct rcu_head rcu; |
17926a79 | 555 | struct rxrpc_connection *conn; /* connection carrying call */ |
df5d8bf7 | 556 | struct rxrpc_peer *peer; /* Peer record for remote address */ |
8d94aa38 | 557 | struct rxrpc_sock __rcu *socket; /* socket responsible */ |
d3be4d24 | 558 | struct rxrpc_net *rxnet; /* Network namespace to which call belongs */ |
540b1c48 | 559 | struct mutex user_mutex; /* User access mutex */ |
a158bdd3 | 560 | unsigned long ack_at; /* When deferred ACK needs to happen */ |
bd1fdf8c | 561 | unsigned long ack_lost_at; /* When ACK is figured as lost */ |
a158bdd3 DH |
562 | unsigned long resend_at; /* When next resend needs to happen */ |
563 | unsigned long ping_at; /* When next to send a ping */ | |
415f44e4 | 564 | unsigned long keepalive_at; /* When next to send a keepalive ping */ |
a158bdd3 DH |
565 | unsigned long expect_rx_by; /* When we expect to get a packet by */ |
566 | unsigned long expect_req_by; /* When we expect to get a request DATA packet by */ | |
567 | unsigned long expect_term_by; /* When we expect call termination by */ | |
568 | u32 next_rx_timo; /* Timeout for next Rx packet (jif) */ | |
569 | u32 next_req_timo; /* Timeout for next Rx request packet (jif) */ | |
1db88c53 | 570 | struct skcipher_request *cipher_req; /* Packet cipher request buffer */ |
248f219c DH |
571 | struct timer_list timer; /* Combined event timer */ |
572 | struct work_struct processor; /* Event processor */ | |
d001648e | 573 | rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ |
17926a79 | 574 | struct list_head link; /* link in master call list */ |
45025bce | 575 | struct list_head chan_wait_link; /* Link in conn->waiting_calls */ |
f66d7490 | 576 | struct hlist_node error_link; /* link in error distribution list */ |
248f219c DH |
577 | struct list_head accept_link; /* Link in rx->acceptq */ |
578 | struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ | |
579 | struct list_head sock_link; /* Link in rx->sock_calls */ | |
580 | struct rb_node sock_node; /* Node in rx->calls */ | |
17926a79 | 581 | struct sk_buff *tx_pending; /* Tx socket buffer being filled */ |
45025bce | 582 | wait_queue_head_t waitq; /* Wait queue for channel or Tx */ |
e754eba6 | 583 | s64 tx_total_len; /* Total length left to be transmitted (or -1) */ |
a263629d | 584 | __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ |
17926a79 | 585 | unsigned long user_call_ID; /* user-defined call ID */ |
17926a79 | 586 | unsigned long flags; |
17926a79 | 587 | unsigned long events; |
17926a79 | 588 | spinlock_t lock; |
20acbd9a | 589 | spinlock_t notify_lock; /* Kernel notification lock */ |
17926a79 | 590 | rwlock_t state_lock; /* lock for state transition */ |
f5c17aae DH |
591 | u32 abort_code; /* Local/remote abort code */ |
592 | int error; /* Local error incurred */ | |
cf13258f DH |
593 | enum rxrpc_call_state state; /* current state of call */ |
594 | enum rxrpc_call_completion completion; /* Call completion condition */ | |
17926a79 | 595 | atomic_t usage; |
dabe5a79 | 596 | u16 service_id; /* service ID */ |
278ac0cd | 597 | u8 security_ix; /* Security type */ |
dabe5a79 DH |
598 | u32 call_id; /* call ID on connection */ |
599 | u32 cid; /* connection ID plus channel index */ | |
600 | int debug_id; /* debug ID for printks */ | |
8e83134d DH |
601 | unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ |
602 | unsigned short rx_pkt_len; /* Current recvmsg packet len */ | |
17926a79 | 603 | |
248f219c DH |
604 | /* Rx/Tx circular buffer, depending on phase. |
605 | * | |
606 | * In the Rx phase, packets are annotated with 0 or the number of the | |
607 | * segment of a jumbo packet each buffer refers to. There can be up to | |
608 | * 47 segments in a maximum-size UDP packet. | |
609 | * | |
610 | * In the Tx phase, packets are annotated with which buffers have been | |
611 | * acked. | |
612 | */ | |
613 | #define RXRPC_RXTX_BUFF_SIZE 64 | |
614 | #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) | |
4075295a | 615 | #define RXRPC_INIT_RX_WINDOW_SIZE 63 |
248f219c DH |
616 | struct sk_buff **rxtx_buffer; |
617 | u8 *rxtx_annotations; | |
618 | #define RXRPC_TX_ANNO_ACK 0 | |
619 | #define RXRPC_TX_ANNO_UNACK 1 | |
620 | #define RXRPC_TX_ANNO_NAK 2 | |
621 | #define RXRPC_TX_ANNO_RETRANS 3 | |
f07373ea | 622 | #define RXRPC_TX_ANNO_MASK 0x03 |
70790dbe DH |
623 | #define RXRPC_TX_ANNO_LAST 0x04 |
624 | #define RXRPC_TX_ANNO_RESENT 0x08 | |
625 | ||
e2de6c40 | 626 | #define RXRPC_RX_ANNO_SUBPACKET 0x3f /* Subpacket number in jumbogram */ |
248f219c DH |
627 | #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ |
628 | rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but | |
629 | * not hard-ACK'd packet follows this. | |
630 | */ | |
631 | rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ | |
c7e86acf | 632 | u16 tx_backoff; /* Delay to insert due to Tx failure */ |
57494343 DH |
633 | |
634 | /* TCP-style slow-start congestion control [RFC5681]. Since the SMSS | |
635 | * is fixed, we keep these numbers in terms of segments (ie. DATA | |
636 | * packets) rather than bytes. | |
637 | */ | |
638 | #define RXRPC_TX_SMSS RXRPC_JUMBO_DATALEN | |
639 | u8 cong_cwnd; /* Congestion window size */ | |
640 | u8 cong_extra; /* Extra to send for congestion management */ | |
641 | u8 cong_ssthresh; /* Slow-start threshold */ | |
642 | enum rxrpc_congest_mode cong_mode:8; /* Congestion management mode */ | |
643 | u8 cong_dup_acks; /* Count of ACKs showing missing packets */ | |
644 | u8 cong_cumul_acks; /* Cumulative ACK count */ | |
645 | ktime_t cong_tstamp; /* Last time cwnd was changed */ | |
646 | ||
248f219c DH |
647 | rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not |
648 | * consumed packet follows this. | |
17926a79 | 649 | */ |
248f219c DH |
650 | rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ |
651 | rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ | |
1a025028 | 652 | rxrpc_serial_t rx_serial; /* Highest serial received for this call */ |
248f219c DH |
653 | u8 rx_winsize; /* Size of Rx window */ |
654 | u8 tx_winsize; /* Maximum size of Tx window */ | |
71f3ca40 | 655 | bool tx_phase; /* T if transmission phase, F if receive phase */ |
75e42126 | 656 | u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ |
17926a79 | 657 | |
c1e15b49 DH |
658 | spinlock_t input_lock; /* Lock for packet input to this call */ |
659 | ||
17926a79 | 660 | /* receive-phase ACK management */ |
4e36a95e | 661 | u8 ackr_reason; /* reason to ACK */ |
0d12f8a4 | 662 | rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ |
1a2391c3 | 663 | rxrpc_serial_t ackr_first_seq; /* first sequence number received */ |
248f219c | 664 | rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ |
805b21b9 DH |
665 | rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */ |
666 | rxrpc_seq_t ackr_seen; /* Highest packet shown seen */ | |
a5af7e1f DH |
667 | |
668 | /* ping management */ | |
669 | rxrpc_serial_t ping_serial; /* Last ping sent */ | |
670 | ktime_t ping_time; /* Time last ping sent */ | |
17926a79 | 671 | |
248f219c | 672 | /* transmission-phase ACK management */ |
57494343 | 673 | ktime_t acks_latest_ts; /* Timestamp of latest ACK received */ |
248f219c | 674 | rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ |
31a1b989 | 675 | rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */ |
bd1fdf8c DH |
676 | rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */ |
677 | rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */ | |
31a1b989 DH |
678 | }; |
679 | ||
680 | /* | |
57494343 | 681 | * Summary of a new ACK and the changes it made to the Tx buffer packet states. |
31a1b989 DH |
682 | */ |
683 | struct rxrpc_ack_summary { | |
684 | u8 ack_reason; | |
685 | u8 nr_acks; /* Number of ACKs in packet */ | |
686 | u8 nr_nacks; /* Number of NACKs in packet */ | |
687 | u8 nr_new_acks; /* Number of new ACKs in packet */ | |
688 | u8 nr_new_nacks; /* Number of new NACKs in packet */ | |
689 | u8 nr_rot_new_acks; /* Number of rotated new ACKs */ | |
690 | bool new_low_nack; /* T if new low NACK found */ | |
57494343 DH |
691 | bool retrans_timeo; /* T if reTx due to timeout happened */ |
692 | u8 flight_size; /* Number of unreceived transmissions */ | |
693 | /* Place to stash values for tracing */ | |
694 | enum rxrpc_congest_mode mode:8; | |
695 | u8 cwnd; | |
696 | u8 ssthresh; | |
697 | u8 dup_acks; | |
698 | u8 cumulative_acks; | |
17926a79 DH |
699 | }; |
700 | ||
48124178 DH |
701 | /* |
702 | * sendmsg() cmsg-specified parameters. | |
703 | */ | |
704 | enum rxrpc_command { | |
705 | RXRPC_CMD_SEND_DATA, /* send data message */ | |
706 | RXRPC_CMD_SEND_ABORT, /* request abort generation */ | |
707 | RXRPC_CMD_ACCEPT, /* [server] accept incoming call */ | |
708 | RXRPC_CMD_REJECT_BUSY, /* [server] reject a call as busy */ | |
709 | }; | |
710 | ||
711 | struct rxrpc_call_params { | |
712 | s64 tx_total_len; /* Total Tx data length (if send data) */ | |
713 | unsigned long user_call_ID; /* User's call ID */ | |
714 | struct { | |
715 | u32 hard; /* Maximum lifetime (sec) */ | |
716 | u32 idle; /* Max time since last data packet (msec) */ | |
717 | u32 normal; /* Max time since last call packet (msec) */ | |
718 | } timeouts; | |
719 | u8 nr_timeouts; /* Number of timeouts specified */ | |
b960a34b | 720 | bool intr; /* The call is interruptible */ |
48124178 DH |
721 | }; |
722 | ||
723 | struct rxrpc_send_params { | |
724 | struct rxrpc_call_params call; | |
725 | u32 abort_code; /* Abort code to Tx (if abort) */ | |
726 | enum rxrpc_command command : 8; /* The command to implement */ | |
727 | bool exclusive; /* Shared or exclusive call */ | |
728 | bool upgrade; /* If the connection is upgradeable */ | |
729 | }; | |
730 | ||
df844fd4 DH |
731 | #include <trace/events/rxrpc.h> |
732 | ||
17926a79 | 733 | /* |
651350d1 | 734 | * af_rxrpc.c |
17926a79 | 735 | */ |
71f3ca40 | 736 | extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; |
651350d1 | 737 | extern struct workqueue_struct *rxrpc_workqueue; |
17926a79 DH |
738 | |
739 | /* | |
0d81a51a | 740 | * call_accept.c |
17926a79 | 741 | */ |
00e90712 DH |
742 | int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); |
743 | void rxrpc_discard_prealloc(struct rxrpc_sock *); | |
248f219c | 744 | struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, |
0099dc58 | 745 | struct rxrpc_sock *, |
248f219c | 746 | struct sk_buff *); |
4f95dd78 | 747 | void rxrpc_accept_incoming_calls(struct rxrpc_local *); |
d001648e DH |
748 | struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, |
749 | rxrpc_notify_rx_t); | |
c1b1203d | 750 | int rxrpc_reject_call(struct rxrpc_sock *); |
17926a79 DH |
751 | |
752 | /* | |
0d81a51a | 753 | * call_event.c |
17926a79 | 754 | */ |
e8c3af6b | 755 | void rxrpc_propose_ACK(struct rxrpc_call *, u8, u32, bool, bool, |
9c7ad434 | 756 | enum rxrpc_propose_ack_trace); |
c1b1203d | 757 | void rxrpc_process_call(struct work_struct *); |
17926a79 | 758 | |
a158bdd3 DH |
759 | static inline void rxrpc_reduce_call_timer(struct rxrpc_call *call, |
760 | unsigned long expire_at, | |
761 | unsigned long now, | |
762 | enum rxrpc_timer_trace why) | |
763 | { | |
764 | trace_rxrpc_timer(call, why, now); | |
765 | timer_reduce(&call->timer, expire_at); | |
766 | } | |
767 | ||
17926a79 | 768 | /* |
0d81a51a | 769 | * call_object.c |
17926a79 | 770 | */ |
f5c17aae DH |
771 | extern const char *const rxrpc_call_states[]; |
772 | extern const char *const rxrpc_call_completions[]; | |
dad8aff7 | 773 | extern unsigned int rxrpc_max_call_lifetime; |
17926a79 | 774 | extern struct kmem_cache *rxrpc_call_jar; |
17926a79 | 775 | |
2341e077 | 776 | struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); |
a25e21f0 | 777 | struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *, gfp_t, unsigned int); |
2341e077 | 778 | struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, |
19ffa01c | 779 | struct rxrpc_conn_parameters *, |
999b69f8 | 780 | struct sockaddr_rxrpc *, |
a25e21f0 DH |
781 | struct rxrpc_call_params *, gfp_t, |
782 | unsigned int); | |
248f219c DH |
783 | void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, |
784 | struct sk_buff *); | |
8d94aa38 | 785 | void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); |
c1b1203d | 786 | void rxrpc_release_calls_on_socket(struct rxrpc_sock *); |
8d94aa38 DH |
787 | bool __rxrpc_queue_call(struct rxrpc_call *); |
788 | bool rxrpc_queue_call(struct rxrpc_call *); | |
e34d4234 | 789 | void rxrpc_see_call(struct rxrpc_call *); |
fff72429 DH |
790 | void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); |
791 | void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); | |
00e90712 | 792 | void rxrpc_cleanup_call(struct rxrpc_call *); |
2baec2c3 | 793 | void rxrpc_destroy_all_calls(struct rxrpc_net *); |
17926a79 | 794 | |
dabe5a79 DH |
795 | static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) |
796 | { | |
797 | return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); | |
798 | } | |
799 | ||
800 | static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) | |
801 | { | |
802 | return !rxrpc_is_service_call(call); | |
803 | } | |
804 | ||
f5c17aae DH |
805 | /* |
806 | * Transition a call to the complete state. | |
807 | */ | |
808 | static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, | |
809 | enum rxrpc_call_completion compl, | |
810 | u32 abort_code, | |
811 | int error) | |
812 | { | |
813 | if (call->state < RXRPC_CALL_COMPLETE) { | |
814 | call->abort_code = abort_code; | |
815 | call->error = error; | |
816 | call->completion = compl, | |
817 | call->state = RXRPC_CALL_COMPLETE; | |
1bae5d22 | 818 | trace_rxrpc_call_complete(call); |
c0d058c2 | 819 | wake_up(&call->waitq); |
f5c17aae DH |
820 | return true; |
821 | } | |
822 | return false; | |
823 | } | |
824 | ||
825 | static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, | |
826 | enum rxrpc_call_completion compl, | |
827 | u32 abort_code, | |
828 | int error) | |
829 | { | |
e8d6bbb0 | 830 | bool ret; |
f5c17aae DH |
831 | |
832 | write_lock_bh(&call->state_lock); | |
833 | ret = __rxrpc_set_call_completion(call, compl, abort_code, error); | |
834 | write_unlock_bh(&call->state_lock); | |
835 | return ret; | |
836 | } | |
837 | ||
838 | /* | |
839 | * Record that a call successfully completed. | |
840 | */ | |
e8d6bbb0 | 841 | static inline bool __rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 842 | { |
e8d6bbb0 | 843 | return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); |
f5c17aae DH |
844 | } |
845 | ||
e8d6bbb0 | 846 | static inline bool rxrpc_call_completed(struct rxrpc_call *call) |
f5c17aae | 847 | { |
e8d6bbb0 DH |
848 | bool ret; |
849 | ||
f5c17aae | 850 | write_lock_bh(&call->state_lock); |
e8d6bbb0 | 851 | ret = __rxrpc_call_completed(call); |
f5c17aae | 852 | write_unlock_bh(&call->state_lock); |
e8d6bbb0 | 853 | return ret; |
f5c17aae DH |
854 | } |
855 | ||
856 | /* | |
857 | * Record that a call is locally aborted. | |
858 | */ | |
5a42976d DH |
859 | static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
860 | rxrpc_seq_t seq, | |
f5c17aae DH |
861 | u32 abort_code, int error) |
862 | { | |
a25e21f0 | 863 | trace_rxrpc_abort(call->debug_id, why, call->cid, call->call_id, seq, |
5a42976d | 864 | abort_code, error); |
248f219c DH |
865 | return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, |
866 | abort_code, error); | |
f5c17aae DH |
867 | } |
868 | ||
5a42976d DH |
869 | static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, |
870 | rxrpc_seq_t seq, u32 abort_code, int error) | |
f5c17aae DH |
871 | { |
872 | bool ret; | |
873 | ||
874 | write_lock_bh(&call->state_lock); | |
5a42976d | 875 | ret = __rxrpc_abort_call(why, call, seq, abort_code, error); |
f5c17aae DH |
876 | write_unlock_bh(&call->state_lock); |
877 | return ret; | |
878 | } | |
879 | ||
fb46f6ee DH |
880 | /* |
881 | * Abort a call due to a protocol error. | |
882 | */ | |
883 | static inline bool __rxrpc_abort_eproto(struct rxrpc_call *call, | |
884 | struct sk_buff *skb, | |
885 | const char *eproto_why, | |
886 | const char *why, | |
887 | u32 abort_code) | |
888 | { | |
889 | struct rxrpc_skb_priv *sp = rxrpc_skb(skb); | |
890 | ||
891 | trace_rxrpc_rx_eproto(call, sp->hdr.serial, eproto_why); | |
892 | return rxrpc_abort_call(why, call, sp->hdr.seq, abort_code, -EPROTO); | |
893 | } | |
894 | ||
895 | #define rxrpc_abort_eproto(call, skb, eproto_why, abort_why, abort_code) \ | |
896 | __rxrpc_abort_eproto((call), (skb), tracepoint_string(eproto_why), \ | |
897 | (abort_why), (abort_code)) | |
898 | ||
4a3388c8 DH |
899 | /* |
900 | * conn_client.c | |
901 | */ | |
45025bce DH |
902 | extern unsigned int rxrpc_max_client_connections; |
903 | extern unsigned int rxrpc_reap_client_connections; | |
a158bdd3 DH |
904 | extern unsigned long rxrpc_conn_idle_client_expiry; |
905 | extern unsigned long rxrpc_conn_idle_client_fast_expiry; | |
4a3388c8 DH |
906 | extern struct idr rxrpc_client_conn_ids; |
907 | ||
eb9b9d22 | 908 | void rxrpc_destroy_client_conn_ids(void); |
5e33a23b DH |
909 | int rxrpc_connect_call(struct rxrpc_sock *, struct rxrpc_call *, |
910 | struct rxrpc_conn_parameters *, struct sockaddr_rxrpc *, | |
911 | gfp_t); | |
45025bce DH |
912 | void rxrpc_expose_client_call(struct rxrpc_call *); |
913 | void rxrpc_disconnect_client_call(struct rxrpc_call *); | |
914 | void rxrpc_put_client_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
915 | void rxrpc_discard_expired_client_conns(struct work_struct *); |
916 | void rxrpc_destroy_all_client_connections(struct rxrpc_net *); | |
d12040b6 | 917 | void rxrpc_clean_up_local_conns(struct rxrpc_local *); |
4a3388c8 | 918 | |
17926a79 | 919 | /* |
0d81a51a DH |
920 | * conn_event.c |
921 | */ | |
922 | void rxrpc_process_connection(struct work_struct *); | |
0d81a51a DH |
923 | |
924 | /* | |
925 | * conn_object.c | |
17926a79 | 926 | */ |
dad8aff7 | 927 | extern unsigned int rxrpc_connection_expiry; |
f859ab61 | 928 | extern unsigned int rxrpc_closed_conn_expiry; |
17926a79 | 929 | |
c6d2b8d7 | 930 | struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); |
8496af50 | 931 | struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, |
0099dc58 DH |
932 | struct sk_buff *, |
933 | struct rxrpc_peer **); | |
45025bce | 934 | void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); |
999b69f8 | 935 | void rxrpc_disconnect_call(struct rxrpc_call *); |
45025bce | 936 | void rxrpc_kill_connection(struct rxrpc_connection *); |
363deeab DH |
937 | bool rxrpc_queue_conn(struct rxrpc_connection *); |
938 | void rxrpc_see_connection(struct rxrpc_connection *); | |
939 | void rxrpc_get_connection(struct rxrpc_connection *); | |
940 | struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); | |
941 | void rxrpc_put_service_conn(struct rxrpc_connection *); | |
2baec2c3 DH |
942 | void rxrpc_service_connection_reaper(struct work_struct *); |
943 | void rxrpc_destroy_all_connections(struct rxrpc_net *); | |
17926a79 | 944 | |
19ffa01c DH |
945 | static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) |
946 | { | |
947 | return conn->out_clientflag; | |
948 | } | |
949 | ||
950 | static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) | |
951 | { | |
e8d70ce1 | 952 | return !rxrpc_conn_is_client(conn); |
19ffa01c DH |
953 | } |
954 | ||
f51b4480 DH |
955 | static inline void rxrpc_put_connection(struct rxrpc_connection *conn) |
956 | { | |
45025bce DH |
957 | if (!conn) |
958 | return; | |
959 | ||
363deeab DH |
960 | if (rxrpc_conn_is_client(conn)) |
961 | rxrpc_put_client_conn(conn); | |
962 | else | |
963 | rxrpc_put_service_conn(conn); | |
5acbee46 DH |
964 | } |
965 | ||
3136ef49 DH |
966 | static inline void rxrpc_reduce_conn_timer(struct rxrpc_connection *conn, |
967 | unsigned long expire_at) | |
968 | { | |
969 | timer_reduce(&conn->timer, expire_at); | |
970 | } | |
971 | ||
7877a4a4 DH |
972 | /* |
973 | * conn_service.c | |
974 | */ | |
8496af50 DH |
975 | struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, |
976 | struct sk_buff *); | |
2baec2c3 | 977 | struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t); |
4722974d DH |
978 | void rxrpc_new_incoming_connection(struct rxrpc_sock *, |
979 | struct rxrpc_connection *, struct sk_buff *); | |
001c1122 | 980 | void rxrpc_unpublish_service_conn(struct rxrpc_connection *); |
7877a4a4 | 981 | |
17926a79 | 982 | /* |
0d81a51a | 983 | * input.c |
17926a79 | 984 | */ |
5271953c | 985 | int rxrpc_input_packet(struct sock *, struct sk_buff *); |
17926a79 DH |
986 | |
987 | /* | |
0d81a51a | 988 | * insecure.c |
17926a79 | 989 | */ |
0d81a51a | 990 | extern const struct rxrpc_security rxrpc_no_security; |
17926a79 DH |
991 | |
992 | /* | |
0d81a51a | 993 | * key.c |
17926a79 | 994 | */ |
0d81a51a DH |
995 | extern struct key_type key_type_rxrpc; |
996 | extern struct key_type key_type_rxrpc_s; | |
997 | ||
998 | int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); | |
999 | int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); | |
10674a03 | 1000 | int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, |
0d81a51a | 1001 | u32); |
17926a79 | 1002 | |
87563616 DH |
1003 | /* |
1004 | * local_event.c | |
1005 | */ | |
4f95dd78 | 1006 | extern void rxrpc_process_local_events(struct rxrpc_local *); |
87563616 | 1007 | |
17926a79 | 1008 | /* |
0d81a51a | 1009 | * local_object.c |
17926a79 | 1010 | */ |
2baec2c3 | 1011 | struct rxrpc_local *rxrpc_lookup_local(struct net *, const struct sockaddr_rxrpc *); |
09d2bf59 DH |
1012 | struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *); |
1013 | struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *); | |
1014 | void rxrpc_put_local(struct rxrpc_local *); | |
730c5fd4 DH |
1015 | struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *); |
1016 | void rxrpc_unuse_local(struct rxrpc_local *); | |
09d2bf59 | 1017 | void rxrpc_queue_local(struct rxrpc_local *); |
2baec2c3 | 1018 | void rxrpc_destroy_all_locals(struct rxrpc_net *); |
17926a79 DH |
1019 | |
1020 | /* | |
0d81a51a | 1021 | * misc.c |
17926a79 | 1022 | */ |
0d81a51a | 1023 | extern unsigned int rxrpc_max_backlog __read_mostly; |
a158bdd3 DH |
1024 | extern unsigned long rxrpc_requested_ack_delay; |
1025 | extern unsigned long rxrpc_soft_ack_delay; | |
1026 | extern unsigned long rxrpc_idle_ack_delay; | |
0d81a51a DH |
1027 | extern unsigned int rxrpc_rx_window_size; |
1028 | extern unsigned int rxrpc_rx_mtu; | |
1029 | extern unsigned int rxrpc_rx_jumbo_max; | |
a158bdd3 | 1030 | extern unsigned long rxrpc_resend_timeout; |
17926a79 | 1031 | |
0d81a51a DH |
1032 | extern const s8 rxrpc_ack_priority[]; |
1033 | ||
2baec2c3 DH |
1034 | /* |
1035 | * net_ns.c | |
1036 | */ | |
1037 | extern unsigned int rxrpc_net_id; | |
1038 | extern struct pernet_operations rxrpc_net_ops; | |
1039 | ||
1040 | static inline struct rxrpc_net *rxrpc_net(struct net *net) | |
1041 | { | |
1042 | return net_generic(net, rxrpc_net_id); | |
1043 | } | |
1044 | ||
17926a79 | 1045 | /* |
0d81a51a | 1046 | * output.c |
17926a79 | 1047 | */ |
bd1fdf8c | 1048 | int rxrpc_send_ack_packet(struct rxrpc_call *, bool, rxrpc_serial_t *); |
26cb02aa | 1049 | int rxrpc_send_abort_packet(struct rxrpc_call *); |
a1767077 | 1050 | int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *, bool); |
248f219c | 1051 | void rxrpc_reject_packets(struct rxrpc_local *); |
ace45bec | 1052 | void rxrpc_send_keepalive(struct rxrpc_peer *); |
17926a79 DH |
1053 | |
1054 | /* | |
abe89ef0 | 1055 | * peer_event.c |
0d81a51a | 1056 | */ |
abe89ef0 | 1057 | void rxrpc_error_report(struct sock *); |
cf1a6474 DH |
1058 | void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, |
1059 | rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); | |
ace45bec | 1060 | void rxrpc_peer_keepalive_worker(struct work_struct *); |
0d81a51a DH |
1061 | |
1062 | /* | |
1063 | * peer_object.c | |
17926a79 | 1064 | */ |
be6e6707 DH |
1065 | struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, |
1066 | const struct sockaddr_rxrpc *); | |
5e33a23b | 1067 | struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *, struct rxrpc_local *, |
be6e6707 DH |
1068 | struct sockaddr_rxrpc *, gfp_t); |
1069 | struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); | |
5e33a23b DH |
1070 | void rxrpc_new_incoming_peer(struct rxrpc_sock *, struct rxrpc_local *, |
1071 | struct rxrpc_peer *); | |
17226f12 | 1072 | void rxrpc_destroy_all_peers(struct rxrpc_net *); |
1159d4b4 DH |
1073 | struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *); |
1074 | struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *); | |
1075 | void rxrpc_put_peer(struct rxrpc_peer *); | |
60034d3d | 1076 | void rxrpc_put_peer_locked(struct rxrpc_peer *); |
17926a79 DH |
1077 | |
1078 | /* | |
0d81a51a | 1079 | * proc.c |
17926a79 | 1080 | */ |
c3506372 CH |
1081 | extern const struct seq_operations rxrpc_call_seq_ops; |
1082 | extern const struct seq_operations rxrpc_connection_seq_ops; | |
bc0e7cf4 | 1083 | extern const struct seq_operations rxrpc_peer_seq_ops; |
17926a79 DH |
1084 | |
1085 | /* | |
0d81a51a | 1086 | * recvmsg.c |
17926a79 | 1087 | */ |
248f219c | 1088 | void rxrpc_notify_socket(struct rxrpc_call *); |
1b784140 | 1089 | int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); |
17926a79 DH |
1090 | |
1091 | /* | |
0d81a51a DH |
1092 | * rxkad.c |
1093 | */ | |
1094 | #ifdef CONFIG_RXKAD | |
1095 | extern const struct rxrpc_security rxkad; | |
1096 | #endif | |
1097 | ||
1098 | /* | |
1099 | * security.c | |
17926a79 | 1100 | */ |
648af7fc DH |
1101 | int __init rxrpc_init_security(void); |
1102 | void rxrpc_exit_security(void); | |
c1b1203d JP |
1103 | int rxrpc_init_client_conn_security(struct rxrpc_connection *); |
1104 | int rxrpc_init_server_conn_security(struct rxrpc_connection *); | |
71a17de3 | 1105 | |
0b58b8a1 DH |
1106 | /* |
1107 | * sendmsg.c | |
1108 | */ | |
1109 | int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); | |
17926a79 DH |
1110 | |
1111 | /* | |
0d81a51a | 1112 | * skbuff.c |
17926a79 | 1113 | */ |
d001648e | 1114 | void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); |
c1b1203d | 1115 | void rxrpc_packet_destructor(struct sk_buff *); |
71f3ca40 DH |
1116 | void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); |
1117 | void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
d0d5c0cd | 1118 | void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace); |
71f3ca40 DH |
1119 | void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); |
1120 | void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); | |
df844fd4 | 1121 | void rxrpc_purge_queue(struct sk_buff_head *); |
17926a79 | 1122 | |
5873c083 DH |
1123 | /* |
1124 | * sysctl.c | |
1125 | */ | |
1126 | #ifdef CONFIG_SYSCTL | |
1127 | extern int __init rxrpc_sysctl_init(void); | |
1128 | extern void rxrpc_sysctl_exit(void); | |
1129 | #else | |
1130 | static inline int __init rxrpc_sysctl_init(void) { return 0; } | |
1131 | static inline void rxrpc_sysctl_exit(void) {} | |
1132 | #endif | |
1133 | ||
be6e6707 DH |
1134 | /* |
1135 | * utils.c | |
1136 | */ | |
5a790b73 | 1137 | int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); |
be6e6707 | 1138 | |
248f219c DH |
1139 | static inline bool before(u32 seq1, u32 seq2) |
1140 | { | |
1141 | return (s32)(seq1 - seq2) < 0; | |
1142 | } | |
1143 | static inline bool before_eq(u32 seq1, u32 seq2) | |
1144 | { | |
1145 | return (s32)(seq1 - seq2) <= 0; | |
1146 | } | |
1147 | static inline bool after(u32 seq1, u32 seq2) | |
1148 | { | |
1149 | return (s32)(seq1 - seq2) > 0; | |
1150 | } | |
1151 | static inline bool after_eq(u32 seq1, u32 seq2) | |
1152 | { | |
1153 | return (s32)(seq1 - seq2) >= 0; | |
1154 | } | |
1155 | ||
17926a79 DH |
1156 | /* |
1157 | * debug tracing | |
1158 | */ | |
95c96174 | 1159 | extern unsigned int rxrpc_debug; |
17926a79 DH |
1160 | |
1161 | #define dbgprintk(FMT,...) \ | |
9f389f4b | 1162 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
17926a79 | 1163 | |
0dc47877 HH |
1164 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1165 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
17926a79 DH |
1166 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1167 | #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) | |
1168 | #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) | |
1169 | ||
1170 | ||
1171 | #if defined(__KDEBUG) | |
1172 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1173 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1174 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1175 | #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) | |
1176 | #define _net(FMT,...) knet(FMT,##__VA_ARGS__) | |
1177 | ||
1178 | #elif defined(CONFIG_AF_RXRPC_DEBUG) | |
1179 | #define RXRPC_DEBUG_KENTER 0x01 | |
1180 | #define RXRPC_DEBUG_KLEAVE 0x02 | |
1181 | #define RXRPC_DEBUG_KDEBUG 0x04 | |
1182 | #define RXRPC_DEBUG_KPROTO 0x08 | |
1183 | #define RXRPC_DEBUG_KNET 0x10 | |
1184 | ||
1185 | #define _enter(FMT,...) \ | |
1186 | do { \ | |
1187 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ | |
1188 | kenter(FMT,##__VA_ARGS__); \ | |
1189 | } while (0) | |
1190 | ||
1191 | #define _leave(FMT,...) \ | |
1192 | do { \ | |
1193 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ | |
1194 | kleave(FMT,##__VA_ARGS__); \ | |
1195 | } while (0) | |
1196 | ||
1197 | #define _debug(FMT,...) \ | |
1198 | do { \ | |
1199 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ | |
1200 | kdebug(FMT,##__VA_ARGS__); \ | |
1201 | } while (0) | |
1202 | ||
1203 | #define _proto(FMT,...) \ | |
1204 | do { \ | |
1205 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ | |
1206 | kproto(FMT,##__VA_ARGS__); \ | |
1207 | } while (0) | |
1208 | ||
1209 | #define _net(FMT,...) \ | |
1210 | do { \ | |
1211 | if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ | |
1212 | knet(FMT,##__VA_ARGS__); \ | |
1213 | } while (0) | |
1214 | ||
1215 | #else | |
12fdff3f DH |
1216 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1217 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1218 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
1219 | #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) | |
1220 | #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) | |
17926a79 DH |
1221 | #endif |
1222 | ||
1223 | /* | |
1224 | * debug assertion checking | |
1225 | */ | |
1226 | #if 1 // defined(__KDEBUGALL) | |
1227 | ||
1228 | #define ASSERT(X) \ | |
1229 | do { \ | |
1230 | if (unlikely(!(X))) { \ | |
9b6d5398 | 1231 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1232 | BUG(); \ |
1233 | } \ | |
b4f1342f | 1234 | } while (0) |
17926a79 DH |
1235 | |
1236 | #define ASSERTCMP(X, OP, Y) \ | |
1237 | do { \ | |
cf13258f DH |
1238 | __typeof__(X) _x = (X); \ |
1239 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 | 1240 | if (unlikely(!(_x OP _y))) { \ |
cf13258f DH |
1241 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ |
1242 | (unsigned long)_x, (unsigned long)_x, #OP, \ | |
1243 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1244 | BUG(); \ |
1245 | } \ | |
b4f1342f | 1246 | } while (0) |
17926a79 DH |
1247 | |
1248 | #define ASSERTIF(C, X) \ | |
1249 | do { \ | |
1250 | if (unlikely((C) && !(X))) { \ | |
9b6d5398 | 1251 | pr_err("Assertion failed\n"); \ |
17926a79 DH |
1252 | BUG(); \ |
1253 | } \ | |
b4f1342f | 1254 | } while (0) |
17926a79 DH |
1255 | |
1256 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1257 | do { \ | |
cf13258f DH |
1258 | __typeof__(X) _x = (X); \ |
1259 | __typeof__(Y) _y = (__typeof__(X))(Y); \ | |
9b6d5398 JP |
1260 | if (unlikely((C) && !(_x OP _y))) { \ |
1261 | pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ | |
cf13258f DH |
1262 | (unsigned long)_x, (unsigned long)_x, #OP, \ |
1263 | (unsigned long)_y, (unsigned long)_y); \ | |
17926a79 DH |
1264 | BUG(); \ |
1265 | } \ | |
b4f1342f | 1266 | } while (0) |
17926a79 DH |
1267 | |
1268 | #else | |
1269 | ||
1270 | #define ASSERT(X) \ | |
1271 | do { \ | |
b4f1342f | 1272 | } while (0) |
17926a79 DH |
1273 | |
1274 | #define ASSERTCMP(X, OP, Y) \ | |
1275 | do { \ | |
b4f1342f | 1276 | } while (0) |
17926a79 DH |
1277 | |
1278 | #define ASSERTIF(C, X) \ | |
1279 | do { \ | |
b4f1342f | 1280 | } while (0) |
17926a79 DH |
1281 | |
1282 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1283 | do { \ | |
b4f1342f | 1284 | } while (0) |
17926a79 DH |
1285 | |
1286 | #endif /* __KDEBUGALL */ |