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 12 #include <linux/atomic.h> 13 #include <linux/seqlock.h> 14 #include <net/sock.h> 15 #include <net/af_rxrpc.h> 16 #include <rxrpc/packet.h> 17 18 #if 0 19 #define CHECK_SLAB_OKAY(X) \ 20 BUG_ON(atomic_read((X)) >> (sizeof(atomic_t) - 2) == \ 21 (POISON_FREE << 8 | POISON_FREE)) 22 #else 23 #define CHECK_SLAB_OKAY(X) do {} while (0) 24 #endif 25 26 #define FCRYPT_BSIZE 8 27 struct rxrpc_crypt { 28 union { 29 u8 x[FCRYPT_BSIZE]; 30 __be32 n[2]; 31 }; 32 } __attribute__((aligned(8))); 33 34 #define rxrpc_queue_work(WS) queue_work(rxrpc_workqueue, (WS)) 35 #define rxrpc_queue_delayed_work(WS,D) \ 36 queue_delayed_work(rxrpc_workqueue, (WS), (D)) 37 38 struct rxrpc_connection; 39 40 /* 41 * Mark applied to socket buffers. 42 */ 43 enum rxrpc_skb_mark { 44 RXRPC_SKB_MARK_DATA, /* data message */ 45 RXRPC_SKB_MARK_FINAL_ACK, /* final ACK received message */ 46 RXRPC_SKB_MARK_BUSY, /* server busy message */ 47 RXRPC_SKB_MARK_REMOTE_ABORT, /* remote abort message */ 48 RXRPC_SKB_MARK_LOCAL_ABORT, /* local abort message */ 49 RXRPC_SKB_MARK_NET_ERROR, /* network error message */ 50 RXRPC_SKB_MARK_LOCAL_ERROR, /* local error message */ 51 RXRPC_SKB_MARK_NEW_CALL, /* local error message */ 52 }; 53 54 /* 55 * sk_state for RxRPC sockets 56 */ 57 enum { 58 RXRPC_UNBOUND = 0, 59 RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ 60 RXRPC_CLIENT_BOUND, /* client local address bound */ 61 RXRPC_SERVER_BOUND, /* server local address bound */ 62 RXRPC_SERVER_LISTENING, /* server listening for connections */ 63 RXRPC_CLOSE, /* socket is being closed */ 64 }; 65 66 /* 67 * Service backlog preallocation. 68 * 69 * This contains circular buffers of preallocated peers, connections and calls 70 * for incoming service calls and their head and tail pointers. This allows 71 * calls to be set up in the data_ready handler, thereby avoiding the need to 72 * shuffle packets around so much. 73 */ 74 struct rxrpc_backlog { 75 unsigned short peer_backlog_head; 76 unsigned short peer_backlog_tail; 77 unsigned short conn_backlog_head; 78 unsigned short conn_backlog_tail; 79 unsigned short call_backlog_head; 80 unsigned short call_backlog_tail; 81 #define RXRPC_BACKLOG_MAX 32 82 struct rxrpc_peer *peer_backlog[RXRPC_BACKLOG_MAX]; 83 struct rxrpc_connection *conn_backlog[RXRPC_BACKLOG_MAX]; 84 struct rxrpc_call *call_backlog[RXRPC_BACKLOG_MAX]; 85 }; 86 87 /* 88 * RxRPC socket definition 89 */ 90 struct rxrpc_sock { 91 /* WARNING: sk has to be the first member */ 92 struct sock sk; 93 rxrpc_notify_new_call_t notify_new_call; /* Func to notify of new call */ 94 rxrpc_discard_new_call_t discard_new_call; /* Func to discard a new call */ 95 struct rxrpc_local *local; /* local endpoint */ 96 struct hlist_node listen_link; /* link in the local endpoint's listen list */ 97 struct rxrpc_backlog *backlog; /* Preallocation for services */ 98 spinlock_t incoming_lock; /* Incoming call vs service shutdown lock */ 99 struct list_head sock_calls; /* List of calls owned by this socket */ 100 struct list_head to_be_accepted; /* calls awaiting acceptance */ 101 struct list_head recvmsg_q; /* Calls awaiting recvmsg's attention */ 102 rwlock_t recvmsg_lock; /* Lock for recvmsg_q */ 103 struct key *key; /* security for this socket */ 104 struct key *securities; /* list of server security descriptors */ 105 struct rb_root calls; /* User ID -> call mapping */ 106 unsigned long flags; 107 #define RXRPC_SOCK_CONNECTED 0 /* connect_srx is set */ 108 rwlock_t call_lock; /* lock for calls */ 109 u32 min_sec_level; /* minimum security level */ 110 #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT 111 bool exclusive; /* Exclusive connection for a client socket */ 112 sa_family_t family; /* Protocol family created with */ 113 struct sockaddr_rxrpc srx; /* local address */ 114 struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ 115 }; 116 117 #define rxrpc_sk(__sk) container_of((__sk), struct rxrpc_sock, sk) 118 119 /* 120 * CPU-byteorder normalised Rx packet header. 121 */ 122 struct rxrpc_host_header { 123 u32 epoch; /* client boot timestamp */ 124 u32 cid; /* connection and channel ID */ 125 u32 callNumber; /* call ID (0 for connection-level packets) */ 126 u32 seq; /* sequence number of pkt in call stream */ 127 u32 serial; /* serial number of pkt sent to network */ 128 u8 type; /* packet type */ 129 u8 flags; /* packet flags */ 130 u8 userStatus; /* app-layer defined status */ 131 u8 securityIndex; /* security protocol ID */ 132 union { 133 u16 _rsvd; /* reserved */ 134 u16 cksum; /* kerberos security checksum */ 135 }; 136 u16 serviceId; /* service ID */ 137 } __packed; 138 139 /* 140 * RxRPC socket buffer private variables 141 * - max 48 bytes (struct sk_buff::cb) 142 */ 143 struct rxrpc_skb_priv { 144 union { 145 unsigned long resend_at; /* time in jiffies at which to resend */ 146 struct { 147 u8 nr_jumbo; /* Number of jumbo subpackets */ 148 }; 149 }; 150 union { 151 unsigned int offset; /* offset into buffer of next read */ 152 int remain; /* amount of space remaining for next write */ 153 u32 error; /* network error code */ 154 }; 155 156 struct rxrpc_host_header hdr; /* RxRPC packet header from this packet */ 157 }; 158 159 #define rxrpc_skb(__skb) ((struct rxrpc_skb_priv *) &(__skb)->cb) 160 161 /* 162 * RxRPC security module interface 163 */ 164 struct rxrpc_security { 165 const char *name; /* name of this service */ 166 u8 security_index; /* security type provided */ 167 168 /* Initialise a security service */ 169 int (*init)(void); 170 171 /* Clean up a security service */ 172 void (*exit)(void); 173 174 /* initialise a connection's security */ 175 int (*init_connection_security)(struct rxrpc_connection *); 176 177 /* prime a connection's packet security */ 178 int (*prime_packet_security)(struct rxrpc_connection *); 179 180 /* impose security on a packet */ 181 int (*secure_packet)(struct rxrpc_call *, 182 struct sk_buff *, 183 size_t, 184 void *); 185 186 /* verify the security on a received packet */ 187 int (*verify_packet)(struct rxrpc_call *, struct sk_buff *, 188 unsigned int, unsigned int, rxrpc_seq_t, u16); 189 190 /* Locate the data in a received packet that has been verified. */ 191 void (*locate_data)(struct rxrpc_call *, struct sk_buff *, 192 unsigned int *, unsigned int *); 193 194 /* issue a challenge */ 195 int (*issue_challenge)(struct rxrpc_connection *); 196 197 /* respond to a challenge */ 198 int (*respond_to_challenge)(struct rxrpc_connection *, 199 struct sk_buff *, 200 u32 *); 201 202 /* verify a response */ 203 int (*verify_response)(struct rxrpc_connection *, 204 struct sk_buff *, 205 u32 *); 206 207 /* clear connection security */ 208 void (*clear)(struct rxrpc_connection *); 209 }; 210 211 /* 212 * RxRPC local transport endpoint description 213 * - owned by a single AF_RXRPC socket 214 * - pointed to by transport socket struct sk_user_data 215 */ 216 struct rxrpc_local { 217 struct rcu_head rcu; 218 atomic_t usage; 219 struct list_head link; 220 struct socket *socket; /* my UDP socket */ 221 struct work_struct processor; 222 struct hlist_head services; /* services listening on this endpoint */ 223 struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */ 224 struct sk_buff_head reject_queue; /* packets awaiting rejection */ 225 struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */ 226 struct rb_root client_conns; /* Client connections by socket params */ 227 spinlock_t client_conns_lock; /* Lock for client_conns */ 228 spinlock_t lock; /* access lock */ 229 rwlock_t services_lock; /* lock for services list */ 230 int debug_id; /* debug ID for printks */ 231 bool dead; 232 struct sockaddr_rxrpc srx; /* local address */ 233 }; 234 235 /* 236 * RxRPC remote transport endpoint definition 237 * - matched by local endpoint, remote port, address and protocol type 238 */ 239 struct rxrpc_peer { 240 struct rcu_head rcu; /* This must be first */ 241 atomic_t usage; 242 unsigned long hash_key; 243 struct hlist_node hash_link; 244 struct rxrpc_local *local; 245 struct hlist_head error_targets; /* targets for net error distribution */ 246 struct work_struct error_distributor; 247 struct rb_root service_conns; /* Service connections */ 248 seqlock_t service_conn_lock; 249 spinlock_t lock; /* access lock */ 250 unsigned int if_mtu; /* interface MTU for this peer */ 251 unsigned int mtu; /* network MTU for this peer */ 252 unsigned int maxdata; /* data size (MTU - hdrsize) */ 253 unsigned short hdrsize; /* header size (IP + UDP + RxRPC) */ 254 int debug_id; /* debug ID for printks */ 255 int error_report; /* Net (+0) or local (+1000000) to distribute */ 256 #define RXRPC_LOCAL_ERROR_OFFSET 1000000 257 struct sockaddr_rxrpc srx; /* remote address */ 258 259 /* calculated RTT cache */ 260 #define RXRPC_RTT_CACHE_SIZE 32 261 u64 rtt; /* Current RTT estimate (in nS) */ 262 u64 rtt_sum; /* Sum of cache contents */ 263 u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ 264 u8 rtt_cursor; /* next entry at which to insert */ 265 u8 rtt_usage; /* amount of cache actually used */ 266 }; 267 268 /* 269 * Keys for matching a connection. 270 */ 271 struct rxrpc_conn_proto { 272 union { 273 struct { 274 u32 epoch; /* epoch of this connection */ 275 u32 cid; /* connection ID */ 276 }; 277 u64 index_key; 278 }; 279 }; 280 281 struct rxrpc_conn_parameters { 282 struct rxrpc_local *local; /* Representation of local endpoint */ 283 struct rxrpc_peer *peer; /* Remote endpoint */ 284 struct key *key; /* Security details */ 285 bool exclusive; /* T if conn is exclusive */ 286 u16 service_id; /* Service ID for this connection */ 287 u32 security_level; /* Security level selected */ 288 }; 289 290 /* 291 * Bits in the connection flags. 292 */ 293 enum rxrpc_conn_flag { 294 RXRPC_CONN_HAS_IDR, /* Has a client conn ID assigned */ 295 RXRPC_CONN_IN_SERVICE_CONNS, /* Conn is in peer->service_conns */ 296 RXRPC_CONN_IN_CLIENT_CONNS, /* Conn is in local->client_conns */ 297 RXRPC_CONN_EXPOSED, /* Conn has extra ref for exposure */ 298 RXRPC_CONN_DONT_REUSE, /* Don't reuse this connection */ 299 RXRPC_CONN_COUNTED, /* Counted by rxrpc_nr_client_conns */ 300 }; 301 302 /* 303 * Events that can be raised upon a connection. 304 */ 305 enum rxrpc_conn_event { 306 RXRPC_CONN_EV_CHALLENGE, /* Send challenge packet */ 307 }; 308 309 /* 310 * The connection cache state. 311 */ 312 enum rxrpc_conn_cache_state { 313 RXRPC_CONN_CLIENT_INACTIVE, /* Conn is not yet listed */ 314 RXRPC_CONN_CLIENT_WAITING, /* Conn is on wait list, waiting for capacity */ 315 RXRPC_CONN_CLIENT_ACTIVE, /* Conn is on active list, doing calls */ 316 RXRPC_CONN_CLIENT_CULLED, /* Conn is culled and delisted, doing calls */ 317 RXRPC_CONN_CLIENT_IDLE, /* Conn is on idle list, doing mostly nothing */ 318 RXRPC_CONN__NR_CACHE_STATES 319 }; 320 321 /* 322 * The connection protocol state. 323 */ 324 enum rxrpc_conn_proto_state { 325 RXRPC_CONN_UNUSED, /* Connection not yet attempted */ 326 RXRPC_CONN_CLIENT, /* Client connection */ 327 RXRPC_CONN_SERVICE_PREALLOC, /* Service connection preallocation */ 328 RXRPC_CONN_SERVICE_UNSECURED, /* Service unsecured connection */ 329 RXRPC_CONN_SERVICE_CHALLENGING, /* Service challenging for security */ 330 RXRPC_CONN_SERVICE, /* Service secured connection */ 331 RXRPC_CONN_REMOTELY_ABORTED, /* Conn aborted by peer */ 332 RXRPC_CONN_LOCALLY_ABORTED, /* Conn aborted locally */ 333 RXRPC_CONN__NR_STATES 334 }; 335 336 /* 337 * RxRPC connection definition 338 * - matched by { local, peer, epoch, conn_id, direction } 339 * - each connection can only handle four simultaneous calls 340 */ 341 struct rxrpc_connection { 342 struct rxrpc_conn_proto proto; 343 struct rxrpc_conn_parameters params; 344 345 atomic_t usage; 346 struct rcu_head rcu; 347 struct list_head cache_link; 348 349 spinlock_t channel_lock; 350 unsigned char active_chans; /* Mask of active channels */ 351 #define RXRPC_ACTIVE_CHANS_MASK ((1 << RXRPC_MAXCALLS) - 1) 352 struct list_head waiting_calls; /* Calls waiting for channels */ 353 struct rxrpc_channel { 354 struct rxrpc_call __rcu *call; /* Active call */ 355 u32 call_id; /* ID of current call */ 356 u32 call_counter; /* Call ID counter */ 357 u32 last_call; /* ID of last call */ 358 u8 last_type; /* Type of last packet */ 359 u16 last_service_id; 360 union { 361 u32 last_seq; 362 u32 last_abort; 363 }; 364 } channels[RXRPC_MAXCALLS]; 365 366 struct work_struct processor; /* connection event processor */ 367 union { 368 struct rb_node client_node; /* Node in local->client_conns */ 369 struct rb_node service_node; /* Node in peer->service_conns */ 370 }; 371 struct list_head proc_link; /* link in procfs list */ 372 struct list_head link; /* link in master connection list */ 373 struct sk_buff_head rx_queue; /* received conn-level packets */ 374 const struct rxrpc_security *security; /* applied security module */ 375 struct key *server_key; /* security for this service */ 376 struct crypto_skcipher *cipher; /* encryption handle */ 377 struct rxrpc_crypt csum_iv; /* packet checksum base */ 378 unsigned long flags; 379 unsigned long events; 380 unsigned long idle_timestamp; /* Time at which last became idle */ 381 spinlock_t state_lock; /* state-change lock */ 382 enum rxrpc_conn_cache_state cache_state; 383 enum rxrpc_conn_proto_state state; /* current state of connection */ 384 u32 local_abort; /* local abort code */ 385 u32 remote_abort; /* remote abort code */ 386 int debug_id; /* debug ID for printks */ 387 atomic_t serial; /* packet serial number counter */ 388 unsigned int hi_serial; /* highest serial number received */ 389 u32 security_nonce; /* response re-use preventer */ 390 u8 size_align; /* data size alignment (for security) */ 391 u8 security_size; /* security header size */ 392 u8 security_ix; /* security type */ 393 u8 out_clientflag; /* RXRPC_CLIENT_INITIATED if we are client */ 394 }; 395 396 /* 397 * Flags in call->flags. 398 */ 399 enum rxrpc_call_flag { 400 RXRPC_CALL_RELEASED, /* call has been released - no more message to userspace */ 401 RXRPC_CALL_HAS_USERID, /* has a user ID attached */ 402 RXRPC_CALL_IS_SERVICE, /* Call is service call */ 403 RXRPC_CALL_EXPOSED, /* The call was exposed to the world */ 404 RXRPC_CALL_RX_LAST, /* Received the last packet (at rxtx_top) */ 405 RXRPC_CALL_TX_LAST, /* Last packet in Tx buffer (at rxtx_top) */ 406 }; 407 408 /* 409 * Events that can be raised on a call. 410 */ 411 enum rxrpc_call_event { 412 RXRPC_CALL_EV_ACK, /* need to generate ACK */ 413 RXRPC_CALL_EV_ABORT, /* need to generate abort */ 414 RXRPC_CALL_EV_TIMER, /* Timer expired */ 415 RXRPC_CALL_EV_RESEND, /* Tx resend required */ 416 }; 417 418 /* 419 * The states that a call can be in. 420 */ 421 enum rxrpc_call_state { 422 RXRPC_CALL_UNINITIALISED, 423 RXRPC_CALL_CLIENT_AWAIT_CONN, /* - client waiting for connection to become available */ 424 RXRPC_CALL_CLIENT_SEND_REQUEST, /* - client sending request phase */ 425 RXRPC_CALL_CLIENT_AWAIT_REPLY, /* - client awaiting reply */ 426 RXRPC_CALL_CLIENT_RECV_REPLY, /* - client receiving reply phase */ 427 RXRPC_CALL_SERVER_PREALLOC, /* - service preallocation */ 428 RXRPC_CALL_SERVER_SECURING, /* - server securing request connection */ 429 RXRPC_CALL_SERVER_ACCEPTING, /* - server accepting request */ 430 RXRPC_CALL_SERVER_RECV_REQUEST, /* - server receiving request */ 431 RXRPC_CALL_SERVER_ACK_REQUEST, /* - server pending ACK of request */ 432 RXRPC_CALL_SERVER_SEND_REPLY, /* - server sending reply */ 433 RXRPC_CALL_SERVER_AWAIT_ACK, /* - server awaiting final ACK */ 434 RXRPC_CALL_COMPLETE, /* - call complete */ 435 NR__RXRPC_CALL_STATES 436 }; 437 438 /* 439 * Call completion condition (state == RXRPC_CALL_COMPLETE). 440 */ 441 enum rxrpc_call_completion { 442 RXRPC_CALL_SUCCEEDED, /* - Normal termination */ 443 RXRPC_CALL_REMOTELY_ABORTED, /* - call aborted by peer */ 444 RXRPC_CALL_LOCALLY_ABORTED, /* - call aborted locally on error or close */ 445 RXRPC_CALL_LOCAL_ERROR, /* - call failed due to local error */ 446 RXRPC_CALL_NETWORK_ERROR, /* - call terminated by network error */ 447 NR__RXRPC_CALL_COMPLETIONS 448 }; 449 450 /* 451 * RxRPC call definition 452 * - matched by { connection, call_id } 453 */ 454 struct rxrpc_call { 455 struct rcu_head rcu; 456 struct rxrpc_connection *conn; /* connection carrying call */ 457 struct rxrpc_peer *peer; /* Peer record for remote address */ 458 struct rxrpc_sock __rcu *socket; /* socket responsible */ 459 unsigned long ack_at; /* When deferred ACK needs to happen */ 460 unsigned long resend_at; /* When next resend needs to happen */ 461 unsigned long expire_at; /* When the call times out */ 462 struct timer_list timer; /* Combined event timer */ 463 struct work_struct processor; /* Event processor */ 464 rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */ 465 struct list_head link; /* link in master call list */ 466 struct list_head chan_wait_link; /* Link in conn->waiting_calls */ 467 struct hlist_node error_link; /* link in error distribution list */ 468 struct list_head accept_link; /* Link in rx->acceptq */ 469 struct list_head recvmsg_link; /* Link in rx->recvmsg_q */ 470 struct list_head sock_link; /* Link in rx->sock_calls */ 471 struct rb_node sock_node; /* Node in rx->calls */ 472 struct sk_buff *tx_pending; /* Tx socket buffer being filled */ 473 wait_queue_head_t waitq; /* Wait queue for channel or Tx */ 474 __be32 crypto_buf[2]; /* Temporary packet crypto buffer */ 475 unsigned long user_call_ID; /* user-defined call ID */ 476 unsigned long flags; 477 unsigned long events; 478 spinlock_t lock; 479 rwlock_t state_lock; /* lock for state transition */ 480 u32 abort_code; /* Local/remote abort code */ 481 int error; /* Local error incurred */ 482 enum rxrpc_call_state state; /* current state of call */ 483 enum rxrpc_call_completion completion; /* Call completion condition */ 484 atomic_t usage; 485 u16 service_id; /* service ID */ 486 u8 security_ix; /* Security type */ 487 u32 call_id; /* call ID on connection */ 488 u32 cid; /* connection ID plus channel index */ 489 int debug_id; /* debug ID for printks */ 490 491 /* Rx/Tx circular buffer, depending on phase. 492 * 493 * In the Rx phase, packets are annotated with 0 or the number of the 494 * segment of a jumbo packet each buffer refers to. There can be up to 495 * 47 segments in a maximum-size UDP packet. 496 * 497 * In the Tx phase, packets are annotated with which buffers have been 498 * acked. 499 */ 500 #define RXRPC_RXTX_BUFF_SIZE 64 501 #define RXRPC_RXTX_BUFF_MASK (RXRPC_RXTX_BUFF_SIZE - 1) 502 #define RXRPC_INIT_RX_WINDOW_SIZE 32 503 struct sk_buff **rxtx_buffer; 504 u8 *rxtx_annotations; 505 #define RXRPC_TX_ANNO_ACK 0 506 #define RXRPC_TX_ANNO_UNACK 1 507 #define RXRPC_TX_ANNO_NAK 2 508 #define RXRPC_TX_ANNO_RETRANS 3 509 #define RXRPC_TX_ANNO_MASK 0x03 510 #define RXRPC_TX_ANNO_RESENT 0x04 511 #define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ 512 #define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ 513 #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ 514 rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but 515 * not hard-ACK'd packet follows this. 516 */ 517 rxrpc_seq_t tx_top; /* Highest Tx slot allocated. */ 518 rxrpc_seq_t rx_hard_ack; /* Dead slot in buffer; the first received but not 519 * consumed packet follows this. 520 */ 521 rxrpc_seq_t rx_top; /* Highest Rx slot allocated. */ 522 rxrpc_seq_t rx_expect_next; /* Expected next packet sequence number */ 523 u8 rx_winsize; /* Size of Rx window */ 524 u8 tx_winsize; /* Maximum size of Tx window */ 525 bool tx_phase; /* T if transmission phase, F if receive phase */ 526 u8 nr_jumbo_bad; /* Number of jumbo dups/exceeds-windows */ 527 528 /* receive-phase ACK management */ 529 u8 ackr_reason; /* reason to ACK */ 530 u16 ackr_skew; /* skew on packet being ACK'd */ 531 rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */ 532 rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */ 533 unsigned short rx_pkt_offset; /* Current recvmsg packet offset */ 534 unsigned short rx_pkt_len; /* Current recvmsg packet len */ 535 536 /* transmission-phase ACK management */ 537 rxrpc_serial_t acks_latest; /* serial number of latest ACK received */ 538 }; 539 540 enum rxrpc_skb_trace { 541 rxrpc_skb_rx_cleaned, 542 rxrpc_skb_rx_freed, 543 rxrpc_skb_rx_got, 544 rxrpc_skb_rx_lost, 545 rxrpc_skb_rx_received, 546 rxrpc_skb_rx_rotated, 547 rxrpc_skb_rx_purged, 548 rxrpc_skb_rx_seen, 549 rxrpc_skb_tx_cleaned, 550 rxrpc_skb_tx_freed, 551 rxrpc_skb_tx_got, 552 rxrpc_skb_tx_lost, 553 rxrpc_skb_tx_new, 554 rxrpc_skb_tx_rotated, 555 rxrpc_skb_tx_seen, 556 rxrpc_skb__nr_trace 557 }; 558 559 extern const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7]; 560 561 enum rxrpc_conn_trace { 562 rxrpc_conn_new_client, 563 rxrpc_conn_new_service, 564 rxrpc_conn_queued, 565 rxrpc_conn_seen, 566 rxrpc_conn_got, 567 rxrpc_conn_put_client, 568 rxrpc_conn_put_service, 569 rxrpc_conn__nr_trace 570 }; 571 572 extern const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4]; 573 574 enum rxrpc_client_trace { 575 rxrpc_client_activate_chans, 576 rxrpc_client_alloc, 577 rxrpc_client_chan_activate, 578 rxrpc_client_chan_disconnect, 579 rxrpc_client_chan_pass, 580 rxrpc_client_chan_unstarted, 581 rxrpc_client_cleanup, 582 rxrpc_client_count, 583 rxrpc_client_discard, 584 rxrpc_client_duplicate, 585 rxrpc_client_exposed, 586 rxrpc_client_replace, 587 rxrpc_client_to_active, 588 rxrpc_client_to_culled, 589 rxrpc_client_to_idle, 590 rxrpc_client_to_inactive, 591 rxrpc_client_to_waiting, 592 rxrpc_client_uncount, 593 rxrpc_client__nr_trace 594 }; 595 596 extern const char rxrpc_client_traces[rxrpc_client__nr_trace][7]; 597 extern const char rxrpc_conn_cache_states[RXRPC_CONN__NR_CACHE_STATES][5]; 598 599 enum rxrpc_call_trace { 600 rxrpc_call_new_client, 601 rxrpc_call_new_service, 602 rxrpc_call_queued, 603 rxrpc_call_queued_ref, 604 rxrpc_call_seen, 605 rxrpc_call_connected, 606 rxrpc_call_release, 607 rxrpc_call_got, 608 rxrpc_call_got_userid, 609 rxrpc_call_got_kernel, 610 rxrpc_call_put, 611 rxrpc_call_put_userid, 612 rxrpc_call_put_kernel, 613 rxrpc_call_put_noqueue, 614 rxrpc_call_error, 615 rxrpc_call__nr_trace 616 }; 617 618 extern const char rxrpc_call_traces[rxrpc_call__nr_trace][4]; 619 620 enum rxrpc_transmit_trace { 621 rxrpc_transmit_wait, 622 rxrpc_transmit_queue, 623 rxrpc_transmit_queue_reqack, 624 rxrpc_transmit_queue_last, 625 rxrpc_transmit_rotate, 626 rxrpc_transmit_end, 627 rxrpc_transmit__nr_trace 628 }; 629 630 extern const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4]; 631 632 enum rxrpc_receive_trace { 633 rxrpc_receive_incoming, 634 rxrpc_receive_queue, 635 rxrpc_receive_queue_last, 636 rxrpc_receive_front, 637 rxrpc_receive_rotate, 638 rxrpc_receive_end, 639 rxrpc_receive__nr_trace 640 }; 641 642 extern const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4]; 643 644 enum rxrpc_recvmsg_trace { 645 rxrpc_recvmsg_enter, 646 rxrpc_recvmsg_wait, 647 rxrpc_recvmsg_dequeue, 648 rxrpc_recvmsg_hole, 649 rxrpc_recvmsg_next, 650 rxrpc_recvmsg_cont, 651 rxrpc_recvmsg_full, 652 rxrpc_recvmsg_data_return, 653 rxrpc_recvmsg_terminal, 654 rxrpc_recvmsg_to_be_accepted, 655 rxrpc_recvmsg_return, 656 rxrpc_recvmsg__nr_trace 657 }; 658 659 extern const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5]; 660 661 enum rxrpc_rtt_tx_trace { 662 rxrpc_rtt_tx_ping, 663 rxrpc_rtt_tx__nr_trace 664 }; 665 666 extern const char rxrpc_rtt_tx_traces[rxrpc_rtt_tx__nr_trace][5]; 667 668 enum rxrpc_rtt_rx_trace { 669 rxrpc_rtt_rx_ping_response, 670 rxrpc_rtt_rx__nr_trace 671 }; 672 673 extern const char rxrpc_rtt_rx_traces[rxrpc_rtt_rx__nr_trace][5]; 674 675 extern const char *const rxrpc_pkts[]; 676 extern const char *rxrpc_acks(u8 reason); 677 678 #include <trace/events/rxrpc.h> 679 680 /* 681 * af_rxrpc.c 682 */ 683 extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs; 684 extern u32 rxrpc_epoch; 685 extern atomic_t rxrpc_debug_id; 686 extern struct workqueue_struct *rxrpc_workqueue; 687 688 /* 689 * call_accept.c 690 */ 691 int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t); 692 void rxrpc_discard_prealloc(struct rxrpc_sock *); 693 struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *, 694 struct rxrpc_connection *, 695 struct sk_buff *); 696 void rxrpc_accept_incoming_calls(struct rxrpc_local *); 697 struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long, 698 rxrpc_notify_rx_t); 699 int rxrpc_reject_call(struct rxrpc_sock *); 700 701 /* 702 * call_event.c 703 */ 704 void rxrpc_propose_ACK(struct rxrpc_call *, u8, u16, u32, bool, bool); 705 void rxrpc_process_call(struct work_struct *); 706 707 /* 708 * call_object.c 709 */ 710 extern const char *const rxrpc_call_states[]; 711 extern const char *const rxrpc_call_completions[]; 712 extern unsigned int rxrpc_max_call_lifetime; 713 extern struct kmem_cache *rxrpc_call_jar; 714 extern struct list_head rxrpc_calls; 715 extern rwlock_t rxrpc_call_lock; 716 717 struct rxrpc_call *rxrpc_find_call_by_user_ID(struct rxrpc_sock *, unsigned long); 718 struct rxrpc_call *rxrpc_alloc_call(gfp_t); 719 struct rxrpc_call *rxrpc_new_client_call(struct rxrpc_sock *, 720 struct rxrpc_conn_parameters *, 721 struct sockaddr_rxrpc *, 722 unsigned long, gfp_t); 723 void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *, 724 struct sk_buff *); 725 void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *); 726 void rxrpc_release_calls_on_socket(struct rxrpc_sock *); 727 bool __rxrpc_queue_call(struct rxrpc_call *); 728 bool rxrpc_queue_call(struct rxrpc_call *); 729 void rxrpc_see_call(struct rxrpc_call *); 730 void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace); 731 void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace); 732 void rxrpc_cleanup_call(struct rxrpc_call *); 733 void __exit rxrpc_destroy_all_calls(void); 734 735 static inline bool rxrpc_is_service_call(const struct rxrpc_call *call) 736 { 737 return test_bit(RXRPC_CALL_IS_SERVICE, &call->flags); 738 } 739 740 static inline bool rxrpc_is_client_call(const struct rxrpc_call *call) 741 { 742 return !rxrpc_is_service_call(call); 743 } 744 745 /* 746 * Transition a call to the complete state. 747 */ 748 static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call, 749 enum rxrpc_call_completion compl, 750 u32 abort_code, 751 int error) 752 { 753 if (call->state < RXRPC_CALL_COMPLETE) { 754 call->abort_code = abort_code; 755 call->error = error; 756 call->completion = compl, 757 call->state = RXRPC_CALL_COMPLETE; 758 return true; 759 } 760 return false; 761 } 762 763 static inline bool rxrpc_set_call_completion(struct rxrpc_call *call, 764 enum rxrpc_call_completion compl, 765 u32 abort_code, 766 int error) 767 { 768 bool ret; 769 770 write_lock_bh(&call->state_lock); 771 ret = __rxrpc_set_call_completion(call, compl, abort_code, error); 772 write_unlock_bh(&call->state_lock); 773 return ret; 774 } 775 776 /* 777 * Record that a call successfully completed. 778 */ 779 static inline bool __rxrpc_call_completed(struct rxrpc_call *call) 780 { 781 return __rxrpc_set_call_completion(call, RXRPC_CALL_SUCCEEDED, 0, 0); 782 } 783 784 static inline bool rxrpc_call_completed(struct rxrpc_call *call) 785 { 786 bool ret; 787 788 write_lock_bh(&call->state_lock); 789 ret = __rxrpc_call_completed(call); 790 write_unlock_bh(&call->state_lock); 791 return ret; 792 } 793 794 /* 795 * Record that a call is locally aborted. 796 */ 797 static inline bool __rxrpc_abort_call(const char *why, struct rxrpc_call *call, 798 rxrpc_seq_t seq, 799 u32 abort_code, int error) 800 { 801 trace_rxrpc_abort(why, call->cid, call->call_id, seq, 802 abort_code, error); 803 return __rxrpc_set_call_completion(call, RXRPC_CALL_LOCALLY_ABORTED, 804 abort_code, error); 805 } 806 807 static inline bool rxrpc_abort_call(const char *why, struct rxrpc_call *call, 808 rxrpc_seq_t seq, u32 abort_code, int error) 809 { 810 bool ret; 811 812 write_lock_bh(&call->state_lock); 813 ret = __rxrpc_abort_call(why, call, seq, abort_code, error); 814 write_unlock_bh(&call->state_lock); 815 return ret; 816 } 817 818 /* 819 * conn_client.c 820 */ 821 extern unsigned int rxrpc_max_client_connections; 822 extern unsigned int rxrpc_reap_client_connections; 823 extern unsigned int rxrpc_conn_idle_client_expiry; 824 extern unsigned int rxrpc_conn_idle_client_fast_expiry; 825 extern struct idr rxrpc_client_conn_ids; 826 827 void rxrpc_destroy_client_conn_ids(void); 828 int rxrpc_connect_call(struct rxrpc_call *, struct rxrpc_conn_parameters *, 829 struct sockaddr_rxrpc *, gfp_t); 830 void rxrpc_expose_client_call(struct rxrpc_call *); 831 void rxrpc_disconnect_client_call(struct rxrpc_call *); 832 void rxrpc_put_client_conn(struct rxrpc_connection *); 833 void __exit rxrpc_destroy_all_client_connections(void); 834 835 /* 836 * conn_event.c 837 */ 838 void rxrpc_process_connection(struct work_struct *); 839 840 /* 841 * conn_object.c 842 */ 843 extern unsigned int rxrpc_connection_expiry; 844 extern struct list_head rxrpc_connections; 845 extern struct list_head rxrpc_connection_proc_list; 846 extern rwlock_t rxrpc_connection_lock; 847 848 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 849 struct rxrpc_connection *rxrpc_alloc_connection(gfp_t); 850 struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *, 851 struct sk_buff *); 852 void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *); 853 void rxrpc_disconnect_call(struct rxrpc_call *); 854 void rxrpc_kill_connection(struct rxrpc_connection *); 855 bool rxrpc_queue_conn(struct rxrpc_connection *); 856 void rxrpc_see_connection(struct rxrpc_connection *); 857 void rxrpc_get_connection(struct rxrpc_connection *); 858 struct rxrpc_connection *rxrpc_get_connection_maybe(struct rxrpc_connection *); 859 void rxrpc_put_service_conn(struct rxrpc_connection *); 860 void __exit rxrpc_destroy_all_connections(void); 861 862 static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn) 863 { 864 return conn->out_clientflag; 865 } 866 867 static inline bool rxrpc_conn_is_service(const struct rxrpc_connection *conn) 868 { 869 return !rxrpc_conn_is_client(conn); 870 } 871 872 static inline void rxrpc_put_connection(struct rxrpc_connection *conn) 873 { 874 if (!conn) 875 return; 876 877 if (rxrpc_conn_is_client(conn)) 878 rxrpc_put_client_conn(conn); 879 else 880 rxrpc_put_service_conn(conn); 881 } 882 883 /* 884 * conn_service.c 885 */ 886 struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *, 887 struct sk_buff *); 888 struct rxrpc_connection *rxrpc_prealloc_service_connection(gfp_t); 889 void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *); 890 void rxrpc_unpublish_service_conn(struct rxrpc_connection *); 891 892 /* 893 * input.c 894 */ 895 void rxrpc_data_ready(struct sock *); 896 897 /* 898 * insecure.c 899 */ 900 extern const struct rxrpc_security rxrpc_no_security; 901 902 /* 903 * key.c 904 */ 905 extern struct key_type key_type_rxrpc; 906 extern struct key_type key_type_rxrpc_s; 907 908 int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); 909 int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); 910 int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, 911 u32); 912 913 /* 914 * local_event.c 915 */ 916 extern void rxrpc_process_local_events(struct rxrpc_local *); 917 918 /* 919 * local_object.c 920 */ 921 struct rxrpc_local *rxrpc_lookup_local(const struct sockaddr_rxrpc *); 922 void __rxrpc_put_local(struct rxrpc_local *); 923 void __exit rxrpc_destroy_all_locals(void); 924 925 static inline void rxrpc_get_local(struct rxrpc_local *local) 926 { 927 atomic_inc(&local->usage); 928 } 929 930 static inline 931 struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local) 932 { 933 return atomic_inc_not_zero(&local->usage) ? local : NULL; 934 } 935 936 static inline void rxrpc_put_local(struct rxrpc_local *local) 937 { 938 if (local && atomic_dec_and_test(&local->usage)) 939 __rxrpc_put_local(local); 940 } 941 942 static inline void rxrpc_queue_local(struct rxrpc_local *local) 943 { 944 rxrpc_queue_work(&local->processor); 945 } 946 947 /* 948 * misc.c 949 */ 950 extern unsigned int rxrpc_max_backlog __read_mostly; 951 extern unsigned int rxrpc_requested_ack_delay; 952 extern unsigned int rxrpc_soft_ack_delay; 953 extern unsigned int rxrpc_idle_ack_delay; 954 extern unsigned int rxrpc_rx_window_size; 955 extern unsigned int rxrpc_rx_mtu; 956 extern unsigned int rxrpc_rx_jumbo_max; 957 extern unsigned int rxrpc_resend_timeout; 958 959 extern const s8 rxrpc_ack_priority[]; 960 961 /* 962 * output.c 963 */ 964 int rxrpc_send_call_packet(struct rxrpc_call *, u8); 965 int rxrpc_send_data_packet(struct rxrpc_call *, struct sk_buff *); 966 void rxrpc_reject_packets(struct rxrpc_local *); 967 968 /* 969 * peer_event.c 970 */ 971 void rxrpc_error_report(struct sock *); 972 void rxrpc_peer_error_distributor(struct work_struct *); 973 void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, 974 rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t); 975 976 /* 977 * peer_object.c 978 */ 979 struct rxrpc_peer *rxrpc_lookup_peer_rcu(struct rxrpc_local *, 980 const struct sockaddr_rxrpc *); 981 struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *, 982 struct sockaddr_rxrpc *, gfp_t); 983 struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t); 984 struct rxrpc_peer *rxrpc_lookup_incoming_peer(struct rxrpc_local *, 985 struct rxrpc_peer *); 986 987 static inline struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer) 988 { 989 atomic_inc(&peer->usage); 990 return peer; 991 } 992 993 static inline 994 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *peer) 995 { 996 return atomic_inc_not_zero(&peer->usage) ? peer : NULL; 997 } 998 999 extern void __rxrpc_put_peer(struct rxrpc_peer *peer); 1000 static inline void rxrpc_put_peer(struct rxrpc_peer *peer) 1001 { 1002 if (peer && atomic_dec_and_test(&peer->usage)) 1003 __rxrpc_put_peer(peer); 1004 } 1005 1006 /* 1007 * proc.c 1008 */ 1009 extern const struct file_operations rxrpc_call_seq_fops; 1010 extern const struct file_operations rxrpc_connection_seq_fops; 1011 1012 /* 1013 * recvmsg.c 1014 */ 1015 void rxrpc_notify_socket(struct rxrpc_call *); 1016 int rxrpc_recvmsg(struct socket *, struct msghdr *, size_t, int); 1017 1018 /* 1019 * rxkad.c 1020 */ 1021 #ifdef CONFIG_RXKAD 1022 extern const struct rxrpc_security rxkad; 1023 #endif 1024 1025 /* 1026 * security.c 1027 */ 1028 int __init rxrpc_init_security(void); 1029 void rxrpc_exit_security(void); 1030 int rxrpc_init_client_conn_security(struct rxrpc_connection *); 1031 int rxrpc_init_server_conn_security(struct rxrpc_connection *); 1032 1033 /* 1034 * sendmsg.c 1035 */ 1036 int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t); 1037 1038 /* 1039 * skbuff.c 1040 */ 1041 void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *); 1042 void rxrpc_packet_destructor(struct sk_buff *); 1043 void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace); 1044 void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace); 1045 void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace); 1046 void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace); 1047 void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace); 1048 void rxrpc_purge_queue(struct sk_buff_head *); 1049 1050 /* 1051 * sysctl.c 1052 */ 1053 #ifdef CONFIG_SYSCTL 1054 extern int __init rxrpc_sysctl_init(void); 1055 extern void rxrpc_sysctl_exit(void); 1056 #else 1057 static inline int __init rxrpc_sysctl_init(void) { return 0; } 1058 static inline void rxrpc_sysctl_exit(void) {} 1059 #endif 1060 1061 /* 1062 * utils.c 1063 */ 1064 int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *, struct sk_buff *); 1065 1066 static inline bool before(u32 seq1, u32 seq2) 1067 { 1068 return (s32)(seq1 - seq2) < 0; 1069 } 1070 static inline bool before_eq(u32 seq1, u32 seq2) 1071 { 1072 return (s32)(seq1 - seq2) <= 0; 1073 } 1074 static inline bool after(u32 seq1, u32 seq2) 1075 { 1076 return (s32)(seq1 - seq2) > 0; 1077 } 1078 static inline bool after_eq(u32 seq1, u32 seq2) 1079 { 1080 return (s32)(seq1 - seq2) >= 0; 1081 } 1082 1083 /* 1084 * debug tracing 1085 */ 1086 extern unsigned int rxrpc_debug; 1087 1088 #define dbgprintk(FMT,...) \ 1089 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 1090 1091 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1092 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 1093 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 1094 #define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__) 1095 #define knet(FMT,...) dbgprintk("@@@ "FMT ,##__VA_ARGS__) 1096 1097 1098 #if defined(__KDEBUG) 1099 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 1100 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 1101 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 1102 #define _proto(FMT,...) kproto(FMT,##__VA_ARGS__) 1103 #define _net(FMT,...) knet(FMT,##__VA_ARGS__) 1104 1105 #elif defined(CONFIG_AF_RXRPC_DEBUG) 1106 #define RXRPC_DEBUG_KENTER 0x01 1107 #define RXRPC_DEBUG_KLEAVE 0x02 1108 #define RXRPC_DEBUG_KDEBUG 0x04 1109 #define RXRPC_DEBUG_KPROTO 0x08 1110 #define RXRPC_DEBUG_KNET 0x10 1111 1112 #define _enter(FMT,...) \ 1113 do { \ 1114 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KENTER)) \ 1115 kenter(FMT,##__VA_ARGS__); \ 1116 } while (0) 1117 1118 #define _leave(FMT,...) \ 1119 do { \ 1120 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KLEAVE)) \ 1121 kleave(FMT,##__VA_ARGS__); \ 1122 } while (0) 1123 1124 #define _debug(FMT,...) \ 1125 do { \ 1126 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KDEBUG)) \ 1127 kdebug(FMT,##__VA_ARGS__); \ 1128 } while (0) 1129 1130 #define _proto(FMT,...) \ 1131 do { \ 1132 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KPROTO)) \ 1133 kproto(FMT,##__VA_ARGS__); \ 1134 } while (0) 1135 1136 #define _net(FMT,...) \ 1137 do { \ 1138 if (unlikely(rxrpc_debug & RXRPC_DEBUG_KNET)) \ 1139 knet(FMT,##__VA_ARGS__); \ 1140 } while (0) 1141 1142 #else 1143 #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1144 #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 1145 #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 1146 #define _proto(FMT,...) no_printk("### "FMT ,##__VA_ARGS__) 1147 #define _net(FMT,...) no_printk("@@@ "FMT ,##__VA_ARGS__) 1148 #endif 1149 1150 /* 1151 * debug assertion checking 1152 */ 1153 #if 1 // defined(__KDEBUGALL) 1154 1155 #define ASSERT(X) \ 1156 do { \ 1157 if (unlikely(!(X))) { \ 1158 pr_err("Assertion failed\n"); \ 1159 BUG(); \ 1160 } \ 1161 } while (0) 1162 1163 #define ASSERTCMP(X, OP, Y) \ 1164 do { \ 1165 __typeof__(X) _x = (X); \ 1166 __typeof__(Y) _y = (__typeof__(X))(Y); \ 1167 if (unlikely(!(_x OP _y))) { \ 1168 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1169 (unsigned long)_x, (unsigned long)_x, #OP, \ 1170 (unsigned long)_y, (unsigned long)_y); \ 1171 BUG(); \ 1172 } \ 1173 } while (0) 1174 1175 #define ASSERTIF(C, X) \ 1176 do { \ 1177 if (unlikely((C) && !(X))) { \ 1178 pr_err("Assertion failed\n"); \ 1179 BUG(); \ 1180 } \ 1181 } while (0) 1182 1183 #define ASSERTIFCMP(C, X, OP, Y) \ 1184 do { \ 1185 __typeof__(X) _x = (X); \ 1186 __typeof__(Y) _y = (__typeof__(X))(Y); \ 1187 if (unlikely((C) && !(_x OP _y))) { \ 1188 pr_err("Assertion failed - %lu(0x%lx) %s %lu(0x%lx) is false\n", \ 1189 (unsigned long)_x, (unsigned long)_x, #OP, \ 1190 (unsigned long)_y, (unsigned long)_y); \ 1191 BUG(); \ 1192 } \ 1193 } while (0) 1194 1195 #else 1196 1197 #define ASSERT(X) \ 1198 do { \ 1199 } while (0) 1200 1201 #define ASSERTCMP(X, OP, Y) \ 1202 do { \ 1203 } while (0) 1204 1205 #define ASSERTIF(C, X) \ 1206 do { \ 1207 } while (0) 1208 1209 #define ASSERTIFCMP(C, X, OP, Y) \ 1210 do { \ 1211 } while (0) 1212 1213 #endif /* __KDEBUGALL */ 1214